WO2009080634A2

WO2009080634A2 - Blocking element for fluid media, non-return flap comprising a blocking element, and structural unit formed therefrom

Info

Publication number: WO2009080634A2
Application number: PCT/EP2008/067670
Authority: WO
Inventors: Robert Buck
Original assignee: Robert Buck
Priority date: 2007-12-20
Filing date: 2008-12-16
Publication date: 2009-07-02
Also published as: WO2009080634A3; DE102008062532A1

Abstract

The invention relates to a blocking element for fluid media. The position of said blocking element, which has a peripherally located hinge axis, can be modified according to the flow. According to the invention, an influencing member is provided within or on the blocking element. Said influencing member has certain properties in order to respond to sensors which are disposed in the vicinity and react to changes in position. The invention further relates to a non-return flap comprising a blocking element that can be moved from a sealing position in which the blocking element rests against a valve seat into an open position, and vice versa, according to the flow. The blocking element comprises an influencing member which has certain properties in order to respond to sensors that are disposed in the vicinity and react to changes in position.

Description

Shut-off element for fluid media, non-return valve with a shut-off element and assembly thereof

description

The invention relates to a shut-off for fl uid media, which is flow-dependent positionally variable in position, according to the preamble of claim 1. Furthermore, the invention relates to a non-return valve with a shut-off, a structural unit consisting of a arranged in a housing check valve and a submersible pump for receiving a shut-off valve, a non-return valve or an assembly of shut-off and non-return valve according to the features of the independent claims.

From DE 33 44 196 Al a check valve is previously known, which includes a shut-off for a passage opening. The shut-off element has a magnet which acts position-dependent as a control magnet on magnetically controllable, downstream elements.

The local shut-off takes on the magnet and is firmly connected to this. In one embodiment according to DE 33 44 196 Al is assumed by a flexible, in particular rubber-like shut-off, which is firmly clamped on one side. The control magnet can then be embedded in the rubber compound.

The magnetically controllable contact set is a usable in the check valve housing, in particular screw-in cartridge with outwardly leading electrical connections.

The previously known non-return flap is able to perform flow-dependent from a sealing position with contact with a valve seat in an open position and vice versa movements, wherein at least one defined position of the shutoff via a magnetic field sensor can be detected.

The solution of the cited prior art is extremely großbauend and consists of several assembly-side parts to be assembled with associated higher production costs. An integration of Shut-off device in z. B. standard check valves to detect their condition is not possible.

Furthermore, flow sensors with a housing and with a sensor element arranged in the housing are previously known. Reference should be made, for example, to WO 2005/124291 A1. Flow sensors can be used in a variety of applications. Thus, applications in the field of process engineering or machine tools are conceivable. In order to reduce the costs in the production of flow sensors, WO 2005/124291 Al has been proposed to provide a projecting into the flowing medium lifting body, the lifting body movably guided on a housing and depending on the flow of the medium to be monitored against the Restoring force of a arranged between the housing and the lifting element return element is movable. The sensor element is preferably designed as a non-contact sensor and generates a signal dependent on the position of the lifting body. In such a solution, the construction, comprising the protruding into the flowing medium lifting body in conjunction with the sensor assembly is very expensive and charged with quite high costs, so that a desirable in itself application is ruled out for many cases.

DE 199 27 365 C2 shows a method for controlling the level when pumping a flowable medium with at least two submersible pumps. To control the individual submersible pumps, a sensor is associated with the respective motor, which is designed as a limit value switch. The provision of additional sensors to monitor the behavior of the respective submersible pumps requires an overall higher effort, which should be avoided.

From the foregoing, it is therefore an object of the invention to provide a further developed shut-off for fluid media, a related educated non-return valve with a shut-off and a unit consisting of shut-off and non-return valve, which are versatile and the respective components each fulfill a multiple function, namely with respect to the opening and closing of a fluid circuit and the signal output with respect to the state of respective shut-off elements, but also only the possibility to detect a flow direction.

The object of the invention is achieved with the feature combinations of the dependent claims, the subclaims each comprising at least expedient refinements and developments.

According to a first basic idea of the invention, this comprises a shut-off element for fluid media, which is position-variable in its position as a function of flow and has a joint axis located on the periphery.

This shut-off element can consist of a material combination which is elastic at least in the region of its sealing function.

According to the invention, an influencing element is provided in or on the shut-off element, the influencing element having such properties in order to address nearby sensors which react to changes in position. It is conceivable here that the influencing body is designed as a permanent magnet, wherein at least one sensor in the vicinity of the shut-off element detects a change in position of the influencing body used in the shut-off element. This makes it possible, the position or position of the shut-off, z. B. closed / open to detect. With changed flow direction, it is also possible to make a corresponding detection.

The influencing body can be embedded in the shut-off element, here it is possible to carry out the shut-off element as a plastic injection-molded part, wherein the influencing body is then encapsulated by the plastic material.

On the other hand, it is possible to use the influencing body in the shut-off, z. B. and then fix by material adhesion, adhesion and / or positive connection. In this way, provided with a corresponding recess shut-off with an influencing body also nachträgl I be completed. The influencing body may be a rod-shaped structure. Here, there is the possibility that the orientation of the rod-shaped structure is substantially perpendicular or parallel to the hinge axis of the shut-off element.

In a preferred embodiment, the shut-off element on the outer edge side has a substantially flat stop surface for a valve seat for obtaining a desired sealing function.

Preferably, the shut-off element is designed as a flat, rotationally symmetrical part, in which case the cross-sectional area of the rotationally symmetrical part can vary over its width.

Also, the shut-off may have a symmetrical, in particular rectangular shape in cross section.

In order to be able to detect the deflection of the shut-off element effectively by means of suitable sensors, the influencing body is preferably located on the side opposite the articulation axis and carries out the deflection movement, which is present depending on the flow and pressure conditions.

Although reference has been made above to a rod-shaped influencing body, it can also assume all other geometric configurations. However, the influencing body should in principle and preferably be embedded in the shut-off element so that, if possible, there is no direct media contact, so that even a use of the shut-off element according to the invention can take place in the case of aggressive fluid media. If the influencing body z. B. externally attached to the shut-off by material connection, a protective coating may be provided for the influencing body.

According to the invention further comprises a non-return valve with a shut-off, wherein the shut-off is flow dependent ig of a Abdichtposition with contact with a valve seat in an open position and vice versa. The shut-off element for the non-return valve has the above-described features and in particular has an influencing body located in or on the shut-off element.

The shut-off element for the non-return valve is preferably formed integrally with the valve seat, wherein there is a flexible joint section between the shut-off element and the valve seat.

The joint portion may be designed as a foil joint, wherein the shut-off and the valve seat consist of a, at least partially elastomeric material.

Preferably, the valve seat has a circular ring shape with a collar and is designed as an insert.

The influencing body, in particular embodied as a magnetic field generating or magnetic field influencing means, can be arranged substantially opposite the joint section, close to or on the outer circumference or outer edge region of the shutoff element.

The valve seat may have an internal annular groove for receiving a mounting or support ring in a preferred embodiment.

The mounting or support ring forms a stop and sealing surface for the shut-off and can be provided with a surface coating, so that the sealing function increases.

In one embodiment, there is the possibility that the valve seat is provided on one side with a mounting or support ring and forms a combination thereof.

Here it is possible to connect the fastening or support ring materially connected to the valve seat.

In a further embodiment, the valve seat and / or the fastening or support ring is provided with an external thread. The thus formed body can be screwed into a tube with a corresponding internal thread, to then find use in a fluid circuit. Ausgestaltend the shut-off can have a through hole, an annular gap or the like opening. This through-hole, the annular gap or the opening can interact with a bypass channel, which is present in the mounting or support ring.

As already mentioned, the influence body can be designed as a magnetic field generating or magnetic field influencing means and interact with a derartzüg Lich sensitive sensors to detect the state of the shutoff within the check valve.

An inventive approach consists in a structural unit comprising a non-return valve arranged in a housing according to the described combination of features. Of course, the assembly may also have a plurality of check valves, in particular a combination of a check valve with and without bypass channel.

The above-mentioned housing is preferably made of a non-magnetic or non-magnetizable material, in particular when the influencing body is designed as a permanent magnet.

To insert the non-return valve, the housing has a passage opening and is capable of fastening means, for. B. an insert ring nut or the like.

Ausgestaltend a circumferential collar is provided as an assembly and mounting stop for the check valve in the passage opening.

Likewise, the housing may have an internal thread for attaching the non-return valve as indicated above.

Particularly preferably, the housing is tubular or has a tubular portion for receiving the non-return valve. The housing can also be part of a Schrägsitzventils here. At least one sensor for detecting the position of the influencing body of the non-return valve is arranged on or in the housing.

This sensor should preferably be arranged in the region of the maximum approach of the influencing body in a defined state or a defined position of the shut-off element.

If the influencing body is a permanent magnet, a magnetic field sensor is used. If the influencing body defines a resonant circuit damping properties, the sensor can be designed as an inductive sensor. Of course, other combinations of known sensors with related influencing bodies are also within the meaning of the invention.

For receiving the at least one sensor, the housing wall may have a groove or a recess, a blind hole, but also a through hole. If it is a tubular or cylindrical housing, the bore or blind bore may be radially but also tangentially oriented.

In a further preferred embodiment of the invention, the principle of the so-called circular wedge connection is used to fix the sensor in the housing wall.

For this purpose, the sensor has a cylindrical body or body section with means for adjusting or adjustable attachment to the valve housing. These remedies are no classic thread pairings. Rather, an arrangement of circular wedges in the circumferential direction is located on the cylinder jacket surface of the sensor, wherein the housing wall has a cylindrical opening or bore with corresponding Kreiskeilausnehmungen. For example, two to four circular wedges with a wedge pitch in the range of substantially 1: 30 to 1: 200 can be provided in the circumferential direction.

By located on the cylinder surface, z. B. three circular wedges extending in the circumferential direction, there is the possibility Mögl, the sensor in the Insert appropriate opening or hole with corresponding circular wedge recesses and position in longitudinal direction. By twisting then creates a radial tension, whereby large axial and tangential forces can be transmitted in any direction. The circular wedge connection, in contrast to compression joints, is in turn easily detachable. So it can be easily replaced a defective sensor.

If holes, breakthroughs, grooves or the like in the housing are not wanted, the sensor can also be placed outside on the housing wall or wall and z. B. there are subject by attachment of an attachment.

The housing may consist of a screw-in, which can be used in a valve or manifold block at the appropriate place.

A preferred application of the described shut-off, the check valve or the assembly of shut-off, check valve and housing are submersible pumps. Here the shut-off element or the non-return valve or the assembly is arranged in the region of the suction port. Thus, there is the possibility that the operation of the submersible pump can be monitored.

The proposed embodiments of the flow sensors are particularly applicable to so-called two-wire flow meters with switching output, d. H. in such inductive resonant circuit proximity switches or GMR or AM R magnetic sensors in which the requirement can be met, according to which in the switched state, the Restspannu ng is only a fraction of the operating voltage and wherein in the locked state, the residual current is very small, so subsequent evaluation stages do not interpret the residual current as a measurement signal.

The invention will be explained below with reference to exemplary embodiments and with the aid of figures.

Hereby show: Fig. 1 to 12 embodiments of a shut-off element for flu ide media in the form of valve flaps;

Fig. 13 to 28 embodiments of check valves with shut-off elements with different mounting options and with and without bypass function;

Fig. 29 to 33 embodiments of a shut-off valve with valve seat and support ring, but not primarily in an action as a check valve or check valve, but for detecting a flow and / or flow direction;

FIGS. 34 to 49 also show different embodiments of non-return flaps as a structural unit with a housing and sensors provided for detecting the position of the influencing body or bodies located in the shut-off element;

50 to 57 embodiments of shut-off elements of the type according to the invention in a housing for detecting the presence of a flow or for detecting a changed flow direction.

FIGS. 58 to 60 show exemplary applications and applications of a check valve with sensor-relevant properties, in particular for use in a motor submersible pump;

61 to 63 another example of a unit with a non-return valve, wherein the assembly comprises a valve housing inlet and outlet nozzle;

FIGS. 64 to 68 show further examples of an embodiment with angled seat valve housing and integrated check valve with one or two associated sensors; Fig. 69 is a detail of a valve flap, which under

Spring bias is to a position-independent operation of a valve, such. As shown in Fig. 68, to ensure;

FIG. 70 shows a further embodiment of a spring-loaded check valve with an oblique seat valve, wherein the sensor is fixed within a screw-in part by clamping; FIG.

71a and 71b are sectional views of the sensor and the Einschraubteils, the sensor by Kreiskeilverbindungstechnik can be adjusted and fixed;

FIG. 72 shows a perspective section of the screw-in part with sensor according to FIG. 70 and FIG

FIG. 73 shows an oblique seat valve with valve housing and housing branch, two sensors being provided in this embodiment.

The Fig. FIGS. 1 to 12 show various embodiments of shut-off elements for fluid media. These shut-off elements are flow-dependent stored in their position variable in position in a seat, not shown. The shut-off elements 1 have an indicated hinge axis 2 and all have an influencing body 3.

On the outer edge, the shut-off elements 1 are provided with a stop surface 4 for a valve seat, not shown.

The shut-off elements 1 can have a membrane shape, as shown in FIGS. 6 and 7 have, but also from a flat, volu minöseren body, as in Figs. 1-5 and 8-12.

In the views of FIG. 1 and 2 it is assumed that the influencing body 3 is inserted in a recess of the shut-off element 1, this recess extending substantially perpendicular to the articulation axis 2 and cutting it in its imaginary extension. The illustration of FIG. 3 in sectional view to show the possibility of a z. B. embedding bar body completely in the shut-off element 1, the latter being designed as a plastic injection molded part.

The influencing body 3 can also be arranged axially parallel with respect to the hinge axis 2 in or on the shut-off element 1, as shown in FIGS. 4 and 6 and 11 symbolically represent. In the illustration of FIG. 7 is assumed by an influencing body 3, the cohesive to the membrane surface of the shutoff 1, z. B. is fixed by gluing.

According to the illustrations according to FIGS. 8 and the associated longitudinal section 9 is an influencing body as a cylindrical, permanent magnetic part introduced into the shut-off, preferably fixed there by molding.

Fig. FIG. 10 shows the state of an influencing body 3 completely encapsulated by the material of the shut-off element 1. In order to securely hold the influencing body 3, as shown in FIGS. 1, 2, 3, 4, 5, 8, 9 and 10 to 12 shown, a material-side thickening of the shutoff over the cross section are provided. The complete embedding of the influencing body 3 in the material of the shut-off element 1 protects the influencing body 3 from potentially aggressive media with which the shut-off element 1 comes into contact in the operating state.

The cross-sectional area of the shut-off element 1, which is preferably designed as a rotationally symmetrical part, can vary on the wide side, as shown for example in FIGS. 2, 3, 9 and 10. Likewise, however, is also a rectangular cross-sectional area, as shown in FIG. 12 shown possible.

The Fig. 13 to 29 show different embodiments of check valves with shut-off elements according to the invention.

In a first variant according to the illustration according to FIGS. 13 to 14, the shut-off element 1 with influencing body 3 is formed integrally with the valve seat 5, wherein between the shut-off element 1 and the valve seat 5 is a flexible hinge portion 6 (Fol iengelenk). The thus formed check valve can be inserted into a tubular housing and fixed by a mounting or support ring 7.

In order to bring the fastening or support ring 7 in operative connection with the valve seat, the valve seat 5 has an annular groove 8 on the inner peripheral side. This annular groove 8 is designed to be complementary to a encompassing flange 9 of the fastening or support ring 7. The functional interaction of valve seat 5, mounting or support ring 7 and flange 9 is shown in the sectional view of FIG. 14.

The thus completed check valve, which is located in a housing, not shown here, opens at a flow in the direction of arrow RF. When the flow decreases in the direction of arrow RF and supported by the action of the flexible joint section 6, the shut-off element 1 comes with its peripheral sealing surface in contact with the fastening or support ring 7, so that the non-return flap sealing function is ensured.

An analogous function with recourse of the mounting or support ring 7 is in a shut-off element 1 with approximately rectangular cross-section and inserted influencing body 3 according to FIGS. 16 and 17 reachable.

In the embodiment according to FIGS. 18 and 19, in a simplified form, the fastening or support ring 7 consists of a z. B. metallic flat ring which can be inserted into the annular groove 8 of the check valve.

According to the illustrations according to FIGS. 20 and 21, a mounting or support ring 7 is shown in connection with the valve seat part 5, wherein the mounting or support ring 7 has a plane-parallel to the valve flap sealing surface aligned contact surface.

The fastening or support ring 7, as shown in FIG. 21, can be connected to the valve seat ring part 5 cohesively, preferably by gluing. In the illustration according to FIG. 21, the valve seat 5 and the fastening or support ring 7 are designed as a one-piece structural unit, this structural unit having an outer thread 10 for screwing in the correspondingly formed non-return flap into a tubular piece or similar housing.

The Fig. 23 serves to illustrate an example of a valve flap arrangement in the form of a check valve, wherein the shut-off element 1 is a flat blank with rubber-elastic properties and has the influencing body 3. The mounting or support ring 7 has an annular circumferential collar to hold the shut-off element 1. A stabilizing part 11 is brought from the outside onto the shut-off element 1 in abutment with an outer side of the fastening or support ring 7. To ensure the function of such a valve flap arrangement, a plurality of flow openings 12 are present in the stabilizing part 11.

The state of the arrangement according to FIG. 23 shows the illustration according to FIG. 24.

The embodiment according to FIGS. 25 and 26 is based on a bypass valve arrangement. Here, a bypass channel 13 is incorporated in the mounting or support ring 7, so that even with the closed position of the shut-off element 1, a partial flow can flow through the bypass channel 13. In order not to block the flow path of the bypass channel 13, the diameter of the shut-off element 1 in comparison z. B. to the embodiment of FIGS. 20 and 21 or 22 reduced.

The mounting state of the arrangement of FIG. 25 shows the FIG. 26th

The embodiment according to FIGS. 27 and 28 is based on the functional principle, as shown in FIGS. 23 and 24. In contrast, however, here is a bypass path as a bypass channel 13 is present, which arises because the diameter and thus the effective area of the shut-off element 1 is reduced relative to the total passage. After the Fig. 29 and 30, a valve flap arrangement can also be designed as a simple flow sensor. The arrow representations RF and R'F symbolize different flow directions, which can follow the rubber-elastic flat blank of the shutoff 1. In other words, the flat blank carries out a pivoting movement depending on the flow direction R'F or RF. The mounting or support ring 7 is designed here so that this double-sided pivoting movement is not hindered.

The illustrations according to FIGS. 31 to 33 go to a flow sensor similar to FIG. 27 back, but with a bypass channel 13 is present.

The Fig. FIGS. 34 to 49 serve to illustrate possible structural units consisting of a backflow flap arranged on a housing with a corresponding shut-off element or also an element which does not primarily serve a sealing function but whose deflection movement is used to detect a flow direction or flow direction change.

As in Figs. 34-45, the housing 14 is preferably cylindrical or tubular. After the Fig. 34 to 39, the housing may have an internal thread 15 to receive a pre-assembled non-return valve with shut-off 1.

Here d ient a circumferential inner collar 16 as a stop surface for the check valve and the valve seat 5 and the mounting or support ring. 7

It is therefore in the housing 14 of FIG. 34, 36 or 37, an arrangement according to FIG. 13 is used.

If in the examples shown the influencing body 3 z. B. is a permanent magnet, in a non-magnetic housing 14 on the outer peripheral side of a sensor 17 are arranged to detect the change in position of the shut-off 1 with nibs 3 influencing. The sensor 17 can according to the illustration of FIG. 34 outside the housing 14 centrally, but axially offset relative to the position of the shut-off element 1 are fixed in the closed state. However, it is also a position selection according to FIG. 36 possible, the sensor 17 as close as possible and opposite the influencing body 3 in the closed state of the shut-off element 1 outside the housing 14, z. B. is arranged by material connection.

In the illustration according to FIG. 37, the sensor 17 is inserted into a radially oriented through-bore 18 in the housing 14.

Fig. 38 shows an alternative embodiment of a sensor valve unit as a check valve with a valve flap arrangement similar to that shown in FIG. 34, wherein the valve flap assembly is the right side into the housing 14, which may be a sleeve, is introduced.

Here, the check valve with its individual components in the preassembled state again with an outer surface in contact with the inner collar 16 is stationary and held with the opposite outer surface via a ring nut having an external thread which is complementary to the internal thread 15. After loosening the ring nut 19, the non-return valve can be removed if necessary from the housing 14.

For attachment of the sensor 17, the housing is provided with a circumferential or over a partial circumference extending groove 20. It is possible here to glue the sensor 17 into the groove 20 of the housing 14.

The arrangement according to FIG. 39 corresponds in principle to that according to FIG. 38, but here in the valve flap arrangement a bypass channel 13 is present.

Fig. 40 shows a further exemplary embodiment of a sensor valve unit as a check valve with a valve flap arrangement according to FIG. 18, wherein the valve flap assembly is fixed by means of a non-threaded pipe socket, not shown here against the inner collar 16 and the contact shoulder formed thereby, in particular glued. The sensor 17 is in the embodiment of FIG. 40 in contact with the media via a through hole 18 which is located in the housing 14, fixed.

In the embodiment according to FIG. 41, a valve flap arrangement according to FIG. 20 used, wherein the valve flap assembly is fixed by means of a pipe socket, also not shown here against a contact shoulder of the inner collar 16 and secured by gluing. The sensor 17 is inserted in the region of the inner collar 16 and a groove 20 or bore located there.

The embodiment of a sensor valve unit as a check valve of FIG. 42 with a valve flap arrangement according to FIG. 27 is again based on a cohesive fixing with respect to a contact shoulder of the inner collar 16 in the housing 14. Here, the sensor 17 is inserted radially into the wall of the housing 14, in a manner such that the movement of the shut-off element 1 following the direction of flow is basically not obstructed. Fig. 43 shows an exploded view of the embodiment of FIG. 42nd

In the embodiment of FIG. 44 is a sensor valve unit as a check valve with a valve flap assembly of FIG. 22, wherein the valve flap assembly is fixed via a threaded connection in the internal thread 15 of the housing 14.

The sensor valve unit in its embodiment as a check valve of FIG. 38 can, as shown in FIG. 45, be braced against the inner collar 16 in the housing 14 via a bayonet quick-action connection piece 21 and thereby fastened. Such a measure ensures rapid replacement of the check valve with shut-off. 1

Also in this embodiment, the sensor 17 is inserted into a groove 20 which is incorporated in the housing 14 on the peripheral side.

Fig. 46 serves to illustrate an exemplary embodiment of a sensor valve unit as a check valve with a valve flap arrangement according to FIG. 14 wherein the valve flap assembly is located in a slanted seat valve housing 22.

In the branch of the Schrägsitzventilgehäuses 22 is a herausdrehbarer plug 23. When this plug 23 is removed, access to the non-return valve with shut-off element 1 is ensured. To fix the non-return valve with shut-off element 1, a pressure ring 24 is used. This presses with the screwing of the plug 23, the valve seat 5 with mounting or support ring 7 to a check valve housing 22 located in the stop surface.

The sensor 17 is in the illustrated embodiment of FIG. 46 in contact with the media through a threaded through-bore into the housing of the Schrägsitzventils 22 screwed.

The illustration of FIG. 47 substantially corresponds to that of FIG. 46, wherein the plug 23 of receiving a further sensor 25 is used. If the influencing element 3 is located in the vicinity of the sensor 25, its sensor output signal is preferably evaluated. If the influencing element 3 together with the shut-off element 1 is in the closed position, there is a greater proximity to the sensor 17, which is screwed into the angular seat valve housing 22. In this case, the signal of the sensor 17 is primarily evaluated. Of course, both sensor signals can be supplied to a bridge circuit in order to determine the respective position of the shut-off element 1 as accurately as possible and representatively.

The Fig. 48 and 49 start from a valve or distributor block 26 for fluid media, wherein the block has flow passages and closable with closure elements 28 openings.

By arranging the closure elements 28, as shown in FIG. 48, a substantially Z-shaped flow path or, as shown in Fig. 49, a substantially Ω-shaped flow path can be realized.

The sensor valve unit as a check valve according to FIGS. 48 and 49 is arranged in a specially designed closure element 28. This particular trained closure element 28 has a Aufnahmebohru ng threaded for a sensor 17. The plug-like closure element 28 cooperates with a pressure ring 24, by means of which the check valve with shut-off element 1, influencing body 3 and valve seat 5 and fastening or support ring 7 can be clamped against a stop surface in the interior of the distributor and thereby held.

Fig. 50 shows a first exemplary embodiment of a sensor valve unit designed as a flow sensor, wherein the valve flap arrangement shown there, as shown in FIG. 33 is formed. A movement of the shut-off element 1 within the housing 14 is possible in both directions depending on the flow direction R'F or RF and can be detected by the outside of the housing 14 mounted sensor 17.

According to the illustration according to FIG. 51, which likewise has a valve flap arrangement according to FIG. 33, the valve flap assembly is fixed in a located in the inner collar 16 of the housing 14 circumferential groove by snapping. In the rest position of the shut-off element 1 with influencing body 3, z. B. in the form of a permanent magnet, a bypass channel 13 acts. It can, as shown in FIG. 51, the permanent magnet-executable influencing body 3 protrude beyond the surface area of the shut-off element 1 in order to achieve an optimum magnetic field effect with respect to the sensor 17. The sensor 17 here has the special feature that two sensor elements 17.1 and 17.2 are present, and offset relative to the flow direction. Starting from the rest position of the shut-off element 1, the sensor element 17.1 in the illustration of FIG. 51 on the left side and the sensor element 17.2 fixed in position in the illustration of FIG. 51 on the right side.

In the embodiment of the sensor valve unit as a flow sensor according to FIG. 52 is replaced by an arrangement similar to that of FIG. 50 gone out, but here the shut-off element 1 is fixed against a pressed or glued into the interior of the housing 14 stop collar 29.

The sensor 17 is, as in the embodiment of FIG. 50 and 53, on the outside of the housing 14 z. B. attached cohesively. In the illustration according to FIG. 53, in turn, a shut-off element 1 is used analogously to the description as in FIGS. 50 and 52. In contrast to the mentioned representations, however, according to the solution according to FIG. 53 fixed against a screwed into the housing 14 stop collar 29.

For this purpose, the stop collar 29 has an external thread which is complementary to the internal thread 15 of the housing 14.

In the illustration according to FIG. 54, a sensor valve unit as a flow sensor according to FIG. 50 provided, wherein two sensors 17 are used tangentially in the tubular housing 14 and the tubular housing 14 you rch an outer shell 30 is reinforced and enclosed.

The shut-off element 1 can in the illustration of FIGS. 54 and 55 swing out to the left and right according to the flow direction R'F and RF, wherein the pivotal movement of the shutoff element 1 is detected with the influencing body 3 of the corresponding sensors 17.

In the embodiment of the sensor valve unit as a flow sensor according to FIG. 56, a valve flap arrangement as shown in FIG. 32 is used. Again, two sensors 17.1 and 17.2 radially in each case a corresponding bore 31, which is located in the housing 14, is used.

The flow-dependent deflection positions of the shutoff element 1 with the influencing body 3 are symbolized by the dashed line illustration of the longitudinal section according to FIG. 56.

The Fig. 58 and 59 show schematic sectional views of a sensor valve unit according to FIG. 45, specifically for use in the suction line of a motor submersible pump. Here, for example, a check valve is used, as shown in FIG. 14. In the Fig. 58 is the shut-off element 1 located in a flow direction behind the sensor 17 position. In the illustration according to FIG. 59, the shut-off element 1 is arranged upstream of the sensor 17 in the flow direction. If the in Fig. 58 and 59 submersible pump, not shown, takes place a flow in the direction of RF. Hereby, the shut-off element 1 opens. Thus, either the influencing body 3, as shown in FIG. 58, arrives in a position with a greater distance to the sensor 17 or, as shown in FIG. 59, into a position of smaller distance from the sensor 17 In both cases, however, the change in position of the shut-off element can be clearly identified.

Fig. 60 shows a schematic diagram of a submersible pump 31 which has in its suction line or in its suction connection a structural unit which comprises the housing 14, the non-return valve with shut-off element 1 according to the invention being located inside the housing.

A sensor 17 arranged externally on the housing 14 can detect via the detected position of the shut-off element 1 whether liquid is sucked in by the pump or not, so that dry-running by switching off the pump motor can be avoided.

The Fig. 61 shows a further exemplary embodiment of a structural unit with a non-return flap, the structural unit comprising a valve housing inlet and a valve housing outlet pipe. The shut-off element 1 is designed as a flat membrane 32, wherein in the membrane 32, a membrane opening 33 is present.

In the area between two slots 34 as a continuation of the membrane opening 33, a film or film hinge 35 is formed, which ensures the mobility of the valve flap 36 as a function of the flowing medium.

In the center of the valve flap 36 is a rivet 37, which fixes a front and rear side located on the valve material flap.

The influencing body 3 is fixed to one of the discs 38 or part of this disc. The influencing body 3 is preferably a permanent magnet.

The flat shut-off element 1, as explained above, can be very easily fixed between two flanges 39, 40, wherein a fastening by a screw connection is conceivable. For this purpose, in the flanges 39 and 40 preferably in the outer edge region bores 41 are provided which are congruent with recesses 42 in the valve membrane 32 are executed.

The connection of the flanges 39 and 40 with the interposition of the shutoff 1 is effected as already mentioned by a corresponding number of screws 43 and nuts 44th

The flange 39 is part of the valve housing inlet nozzle 45. The flange 40, however, is part of the valve housing outlet piece 46. The nozzles 45 and 46 may have a stepped tubular portion to z. B. to assemble the hoses or flexible pipes with different inner diameter, adapted to the outer diameter of the corresponding nozzle area.

As can be seen from the sectional views according to FIGS. 62 and 63, with a corresponding flow, symbolized by the arrow representation, the valve flap 36 can be removed from its closed abutment position in the region of the abutment zone 47 and release the flow path. On a flattening 48 of the valve housing outlet piece 46, in conjunction with a mounting surface 49, it is possible to fasten a sensor 17 with a plug connection 50. The sensor may be located in an outer housing, which has a fastening web 51 with corresponding bores, so that an assembly with the screws 43 under Nutzu ng of the holes 41 can be carried out.

A change in the positional relationship between the influencing body 3 and the sensor 17 is reliably detected, whereby a functional or state control of the shutoff is possible.

In the embodiment according to the sectional view of FIG. 64, it is assumed that an oblique seat valve housing 22 has a branch 52.

Inside the valve housing 22 is a valve flap 53, which is mounted pivotably via a hinge axis 54. In the flow according to the arrow between inlet 55 and outlet 56 of the valve, the valve flap 53 opens and thus releases the flow path.

In branch 52, a preferably inductive sensor 57 is screwed in, for which a metal sleeve 58 is used.

A plastic sleeve 59 protects the sensor 57 from potentially aggressive media.

For sealing purposes, a sealant 60 may find application.

The inductive sensor 57 is shown in FIG. 64 not flush inserted into the branch 52 in order to ensure the greatest possible approximation to the valve flap 53 with appropriate sensitivity based on changes in position. However, it is basically possible, as shown in FIG. 65, to mount the sensor, embodied there as a magnetic sensor 61, flush in the branch 52, the advantage here being that the valve flap 53 can be opened unhindered and completely. For a movement limitation in the open position, a stop 62 may be provided.

The sensor 57 or 61 may have such standard dimensions that selbiger can be fastened in a classic valve cover 63 by screwing.

In the embodiment according to FIGS. 65 to 68, the valve flap 53 comprises a magnet as influencing element 3, ie. H. it is assumed in the examples shown by a sensor 61 which reacts to changes in a magnetic field.

In the embodiments according to FIGS. 65 and 67, the influencing body 3 is disc-shaped. In the embodiments according to FIGS. 66 and 68 of the influencing body 3 is designed as a bar magnet, which is integrated in the material of the valve flap or inserted there. If one compares the illustrations according to FIGS. 65 and 66, then goes the Fig. 65 from a single magnetic sensor 61, which is located in the branch 52 of the valve.

The Fig. 66, however, shows a variant of a non-flush inserted into the valve cover 63 first magnetic sensor 61 and a second magnetic sensor 64, which is located in the region of the inlet 55, namely z. B. is used by screwing or by Kreiskeilverbindungstechnik in a recess in the valve housing 22.

Both sensors 61 and 64 can now detect changes in the position of the valve flap 53, wherein a differential evaluation of received measurement signals is possible to increase the sensitivity.

The embodiment of the valve with valve flap 53 of FIG. 67 shows a magnetic sensor 61, which in turn is mounted in the branch 52 of the valve housing 22. On the outer circumference is located on the sleeve formed as a cover 65 with magnetic sensor housing a compression spring 66, d. H. Here, the sleeve with cover 65 serves as a guide for the compression spring 66th

The compression spring 66 is capable of exerting a biasing force on the valve flap 53. In this way, the opening and thus switching behavior of the valve flap 53 can be influenced or predetermined.

In the embodiment according to FIG. 68, a magnetic sensor 61 mounted almost flush in the valve cover 63 is assumed.

Guided by the hinge axis 54 and an extension 67 of this axis (see also Fig. 69), a leg spring 68 is present, which is supported on the one hand with a leg on the inside of the valve housing 22 and on the other hand with its second leg on the surface of the valve flap 53 , For the opening of the valve flap 53, the force of the leg spring 68 must now be overcome. The valve flap 53 is in the embodiment of FIG. 68 completely apparent and is limited by the stop 62 on the valve housing 22. The leg spring 68 loads the valve flap 53 in Closing direction. Details of the design of the valve flap 53 are shown in FIG. 69.

The valve flap 53 is based on a valve cover 69 with a sealing washer 70. In the valve cover 69, a portion 71 is integrated, which receives a bar magnet as influencing body 3.

The leg spring 68 has a first spring leg 72 and a second spring leg 73 with angled portion 74.

The angled portion 74 rests on the surface of the valve cover 69, with its almost entire spring leg extension 75.

The valve cover 69 merges via a connecting web 78 into a hub part 76, which receives the joint axis 54.

About the formation of a spring coil 77, the leg spring 68 is securely guided on the extension 67.

The Fig. FIG. 70 shows a further embodiment of a spring seated check valve according to FIG. 68, but here the sensor 17 is not screwed into the through opening of a valve cover, but is fixed within a screw 23 by jamming.

The screw 23 is mounted opposite the valve flap 53 in the valve housing 22 instead of a conventional valve cover.

The screw-in 23 has a recess in the manner of a blind hole for receiving the sensor 17, wherein the recess in the upper, valve-remote area as Kreiskeilausnehmung 83 and in the lower, near-flap area is designed as a cylindrical recess 84.

The sensor 17 has at the connection cable end a handle part 80, for example, designed as a surface knurling. The following sections are designed as circular wedge 81 and cylinder 79. By twisting jammed the sensor 17 within a clamping zone 86 frictionally in the Sacklochbohru ng of the screw 23rd

According to FIG. 68, the representation according to FIG. 70, the sensor 17 is formed as a magnetic sensor 61. Alternatively, other sensors can be used, for example, inductive sensors.

The Fig. 71a and 71b each show a sectional view of the sensor 17 and the screw-in part 23 in the region of the clamping zone 86 (see FIG. 70), wherein the sensor can be adjusted and fixed by circular wedge connection technology.

On the lateral surface of the sensor 17 are in the example shown, three circumferentially spaced circular wedges 81. These circular wedges 81 extend over a first portion of the longitudinal axis of the sensor, wherein in a second portion of the sensor is cylindrical. It is also conceivable to extend the circular wedges 81 over the entire lateral surface of the sensor 17.

At Einschraubteil 23 or on an object 82 to which the sensor 17 is to be attached, at least one cylindrical opening or bore is present, wherein the corresponding cylindrical opening or bore corresponding Kreiskeilausnehmungen 83 (see Fig. 71a and 71b).

In the example shown, three circular wedges 81 with corresponding three circular wedge recesses 83 are provided on the object 82. The circular spline slope may be in the range of substantially 1: 30 to 1: 200 here.

With the introduction of the sensor 17 and the circular wedges provided there in an object 82 which has a complementary opening with Kreiskeilausnehmungen, and then twisting creates a radial bias, whereby large axial and tangential forces can be transmitted in any direction. The proposed circular wedge connection is again easily detachable via an oppositely directed rotational movement. The Fig. 71a shows a sectional view in the unclamped state. In this state, z. B. by means of the handling part 80 of the sensor 17 slightly shifted in Längsachsenrichtu ng and z. B. the desired adjustment to find the window area or a work point done. If the desired window area is present and z. B. is signaled with an optoelectronic display, in turn, by means of the handling part 80, the rotation without changing the selected or reached position in the longitudinal axis direction. An adjustment or the execution of a setting process is much faster and easier than it would be at a z. B. screw thread is the case, where it is z. B. when tightening a lock nut to obtain the selected position can come to a misalignment.

The circular wedge shape, as shown in FIGS. 71a and b recognizable, for example, by a logarithmic spiral writable. However, there are also other clamping acting wedge shapes in question. Due to the corresponding wedges in the joint surface results in a homogeneous surface pressure, so that not only an optimal transmission power in tightening direction, but also sets an optimal self-locking in the release direction.

However, it is also possible a quasi-kinematic reversal to the effect that the sensor element is located in a body having an annular sleeve. In this case, the object to which the sensor is to be attached will have a cylindrical extension which has the circular wedges over its circumferential surface as explained.

In this embodiment variant, the sleeve-shaped sensor would be displaceable over the cylindrical rod and fixable by rotation.

Fig. 72 time a perspective section of the screw 23 with sensor 17 of FIG. 70.

The circular wedge recesses 83 extend substantially in the upper part of the recess for the sensor 17 in the screw-in. The lower part is, as already explained, cylindrical. However, it is also conceivable that Circular wedge recess over the entire recess in the longitudinal direction form.

In particular, it is also possible to provide a sleeve which has circular wedge recesses on its inner circumferential surface. If, instead of the above-explained recess of the screw-in part 23, a simple blind hole is now provided for receiving the prefabricated sleeve, a receptacle for a sensor 17 with circular wedge connection technology can be provided in a simple manner by pressing the sleeve into such a blind hole.

If the circular wedge recess extends over the entire longitudinal extent within the screw-in part 23, a cylindrical section 79 of the sensor 17 can be dispensed with.

If a cylindrical section 79 is provided on the sensor 17, the diameter of this section can be selected at most in accordance with the clear or free diameter of the circular wedge recess.

In the example shown in FIG. 72, the diameter of the cylindrical portion 79 is chosen to be significantly smaller than the possible free diameter. In principle, however, it is also possible to adapt the cylindrical recess 84 corresponding to this section to the diameter of the cylindrical section 79.

Furthermore, the sensor 17 has an optoelectronic display 85. In the case shown, this display or a window of this display in the area of knurling 80 is attached. However, other displays may be provided. In particular, it is conceivable to arrange the displays offset by 180 ° or 90 ° in order to have the display always in view even when the sensor is rotated. In a further embodiment, also or exclusively a display on the sensor termination in the cable region 87 may be provided, so that the display is visible from above. Furthermore, it may be provided to terminate or cover the cable region 87 transparently so that an optoelectronic display remains visible through this transparent termination. As optoelectronic displays are particularly light emitting diodes into consideration. Fig. 73 again shows an oblique seat valve with valve housing 22 and a housing branch. In Gehäuseabzweig a screw 23 is fixed, as already shown in FIG. 70 explained.

In the screw 23, the sensor 17 is received, in a recess that made a circular wedge connection with the sensor 17 light. In contrast to the illustration of FIG. 70, the insert part 23 has a guide section 88, which is oriented in the direction of the valve seat.

The guide portion 88 receives a longitudinally displaceable valve body 89, at its end oriented toward the valve seat, a permanent magnet 90 is located. The preferably cylindrically designed valve body 89 is biased by means of a coil spring 91 in the direction of the valve seat. A change in position of the valve body 89 leads to a movement of the permanent magnet 90, which can be detected both by the sensor 17 and by a further sensor 64 analogous to FIG. 66. The valve body 89 is in the example shown in FIG. 73 executed as a spring-loaded check valve assembly.

LIST OF REFERENCE NUMBERS

1 shut-off element

2 hinge axis

3 influencing bodies

4 stop surface

5 valve seat

6 flexible joint section

7 mounting or support ring

8 ring groove

9 encompassing flange

10 external threads

11 stabilization part

12 flow opening

13 bypass channel

14 housing inner thread

Inner collar, 17.1, 17.2 sensor

Through Hole

ring nut

groove

Bayonet quick-release spigot

Angle seat valve body

Plug

Pressure ring further sensor

Valve or manifold block

Flow passage

sealing plug

stop collar

outer shell

submersible pump

membrane

diaphragm opening

slot

film hinge

valve flap

rivet

Disc, 40 flange

drilling

recess

screw

mother

Valve body inlet connection

Trim valve body outlet

stop zone

flattening

mounting surface

connector

fastening web ό

junction

valve flap

joint axis

inlet

Outlet inductive sensor

metal sleeve

Plastic sleeve

Sealant, 64 magnetic sensor

attack

valve cover

Sleeve with cover

compression spring

extension

Leg spring

valve cover

sealing washer

Section, 73 spring legs

angling

Spring leg extension

hub part

Spring wind

Connecting bridge cylindrical section

Handle part knurl

circular spline

object

Circular wedge recess cylindrical recess

display

clamping zone

cable range

guide section

valve body 90 magnet

91 coil spring

Claims

Patent application

1. shut-off element for fluid media, which is flow-dependent positionally variable in position, and having a, located at the periphery hinge axis, characterized in that in or on the shut-off an influencing body is provided, the influencing body has properties to nearby, to respond to changes in position sensors.

2. Shut-off element according to claim 1, characterized in that the influencing body is embedded in the shut-off element.

3. Shut-off element according to claim 1, characterized in that the influencing body is inserted into the shut-off element.

4. Shut-off element according to claim 1, characterized in that the influencing body is non-positively, positively and / or materially connected to the shut-off element.

5. Shut-off element according to one of the preceding claims, characterized in that the influencing body is a rod-shaped structure.

6. Shut-off element according to claim 5, characterized in that the orientation of the rod-shaped structure is substantially perpendicular or parallel to the hinge axis.

7. Shut-off element according to one of the preceding claims, characterized in that this is designed as a plastic injection-molded part.

8. Shut-off element according to one of the preceding claims, characterized in that the outer edge side is provided a stop surface for a valve seat.

9. Shut-off element according to one of the preceding claims, characterized in that this is designed as a flat, rotationally symmetrical part.

10. Shut-off element according to claim 9, characterized in that the cross-sectional area of the rotationally symmetrical part varies over the width.

11. Shut-off element according to claim 9, characterized in that the cross-sectional area has a rectangular shape.

12. Shut-off element according to one of the preceding claims, characterized in that the influencing body is located on the opposite side of the longitudinal axis.

13. Non-return valve with a shut-off, which is flow-dependent from a sealing position with contact with a valve seat in an open position and vice versa movable, wherein the shut-off element is designed according to the features of any one of the preceding claims.

14. Non-return valve with a shut-off, which is flow-dependent from a Abdichtposition with contact with a valve seat in an open position and vice versa movable, wherein arranged on the shut-off an influencing body or embedded in the shut-off, characterized in that the shut-off is formed integrally with the valve seat , wherein between the shut-off and the valve seat is a flexible hinge portion.

15. Non-return valve according to claim 14, characterized in that the joint portion is a foil joint and shut-off and valve seat consist of a, at least partially elastomeric material.

16, non-return valve according to claim 14 or 15, characterized in that the valve seat has a circular ring shape with a collar and is designed as an insert.

17. Non-return valve according to one of claims 14 to 16, characterized in that substantially opposite to the joint portion, near the or on the outer periphery or outer edge region of the shutoff of the influencing body, in particular designed as magnetic field generating or magnetic field influencing message is arranged.

18. Non-return valve according to one of claims 14, to 17, characterized in that the valve seat has an internal annular groove for receiving a mounting or support ring.

19. Non-return valve according to claim 18, characterized in that the fastening or support ring forms a stop and sealing surface for the shut-off.

20. Non-return valve according to one of claims 14 to 17, characterized in that the valve seat is provided on one side with a fastening ungs or support ring.

21. Non-return valve according to claim 20, characterized in that the fastening or support ring is cohesively connectable to the valve seat.

22. Non-return valve according to one of claims 14 to 21, characterized in that the valve seat and / or the fastening or support ring is provided with an external thread.

23. Non-return valve according to one of claims 14 to 22, characterized in that the shut-off element has a through hole, an annular gap or the like opening.

24. Non-return valve according to one of claims 14 to 23, characterized in that the fastening or support ring has at least one bypass channel.

25. Non-return valve according to claim 23 and 24, characterized in that the bypass channel in the flow region of the through hole, the annular gap or the like opening is located.

26, check valve according to one of claims 14 to 25, characterized in that the influencing body is formed as a magnetic field generating or magnetic field influencing means.

27, assembly consisting of a housing arranged in a non-return valve according to one of claims 14 to 26.

28. Assembly according to claim 27, characterized in that the housing consists of a non-magnetic or non-magnetizable material.

29. Assembly according to claim 27 or 28, characterized in that the housing has a passage opening for receiving the non-return valve.

30. Assembly according to claim 29, characterized in that in the passage opening, a circumferential collar is provided as an assembly and mounting arrangement for the check valve.

31. Assembly according to one of claims 27 to 30, characterized in that the housing has an internal thread for fastening the non-return valve.

32. Assembly according to one of claims 27 to 31, characterized in that the housing is tubular or has a tubular portion for receiving the non-return valve.

33. Assembly according to one of claims 27 to 32, characterized in that arranged on or in the housing at least one sensor for detecting the position of the influencing body.

34. Assembly according to claim 33, characterized in that the sensor is arranged or can be arranged in the region of the maximum approach of the influencing body.

35. Assembly according to claim 33 or 34, characterized in that a magnetic field and / or an inductive sensor is provided.

36. Assembly according to one of claims 33 to 35, characterized in that the sensor is inserted into the housing wall.

37. An assembly according to claim 36, characterized in that the housing has a groove or a return to the sensor receptacle.

38. Assembly according to one of claims 33 to 35, characterized in that the sensor is placed externally on the housing wall.

39. Assembly according to one of claims 27 to 38, characterized in that the housing is designed as a Schrägsitzventilgehäuse.

40. Assembly according to one of claims 27 to 38, characterized in that the housing consists of a screw-in, which can be inserted in a valve or manifold block.

41. Submersible pump with a pressure or suction port, which has a support region for receiving a fluid media shutoff element according to one of claims 1 to 14.

42. Submersible pump with a pressure or suction connection, which has a support region for receiving a non-return valve with shut-off element for fluid media according to one of claims 14 to 26.

43. Submersible pump with a pressure or suction port, which is suitable for receiving a structural unit according to one of claims 27 to 40.

44. Shut-off according to one of claims 1 to 8, characterized in that a force accumulator is provided to hold the shut-off element under mechanical bias.

45. Shut-off element according to claim 44, characterized in that the energy accumulator is designed as a spring.

46. An assembly according to any one of claims 33 to 36, characterized in that the sensor is a cylindrical body or body portion with means to n

Adjustment or adjustable attachment to the housing, wherein on the

Cylinder surface circular wedges are arranged in the circumferential direction and the

Housing a cylindrical opening or bore with corresponding

Has circular wedge recesses.