CA2278471A1 - Shut-off valve for pipes - Google Patents
Shut-off valve for pipes Download PDFInfo
- Publication number
- CA2278471A1 CA2278471A1 CA002278471A CA2278471A CA2278471A1 CA 2278471 A1 CA2278471 A1 CA 2278471A1 CA 002278471 A CA002278471 A CA 002278471A CA 2278471 A CA2278471 A CA 2278471A CA 2278471 A1 CA2278471 A1 CA 2278471A1
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- Canada
- Prior art keywords
- sealing
- shut
- closure element
- valve
- shells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Magnetically Actuated Valves (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to a shut-off valve (1) for pipes (2) and/or reservoirs for receiving liquids. The shut-off valve (1) comprises a dividable valve housing (3) with an inlet opening (4). A spherical closing element (5) which also has an inlet opening (4') is arranged in the inlet opening (4) in a sliding and/or rotational manner. The closing element (5) is enclosed by two half shell-shaped sealing cups (6, 7), which form an inlet opening (4'') corresponding to the inlet opening (4') of the closing element (5) and are made of a material that is softer or more elastic than the closing element (5). The sealing cups (6, 7) at least on their opposite faces (8) each have a circular element (9, 9') for securing them between the housing halves, the valve housing (3, 3') or the flange (28) of the valve housing (3, 3'). Said element or the two circular flanges (9, 9') can be fitted into a recess (16) in the valve housing (3, 3') and are directly or indirectly held together by means of the valve housing (3, 3').
Description
Siaut-oxf valve for pipel~aes The invention relates to a shut-off valve for pipelines and/or for tanks that hold liquids.
A shut-off valve for pipelines and for tanks that hold liquids is already known which is fitted with a closure element and with a passage borehole positioned crosswise to the axis of oscillation of the closure element for purposes of opening and closing the entire free flow area (DE 44 09 796). At the height of the flow area, crosswise to the longitudinal axis, the closure element is configured free of material towards one side. The remaining outer wall of the closure element facing the opposite side forms the sealing surface axes of the free flow area along the flow axis. The spherical closure element is completely surrounded by two sealing half shells, except for the flow area. The closure element is supported in these half shells in such a way that it can slide and rotate. The two closure elements are held together by the divided housir~g az~d by appropriate screws.
U.S. Patent No. 3,336,938 likewise describes a shut-off valve for pipelines to hold liquids, whereby the shut-off valve is configured as a divided valve housing and consists merely of an elastic shaped part that is placed between the housing and the spherical element. Such a valve) however, is not suited to ensure flawless sealing, even when cleaning liquids having very high temperatures are used. Moreover, the known arrangement lacks an appropriate stabilization of the sealing half shells and a fixation of the insert that is designed as a support element in the flange area.
The invention has the objective of creating a shut-off valve of the type described above and configuring it so as to ensure flawless sealing, also when cleaning liquids are used, which can have a very high temperature, ox when sterile steam is employed.
The objective is achieved in that the sealing shells have an insert that is conf'xgured as a support element and that extends into the axes of a flange of the sealing shell and/or of the passage opening, and in that the insert or the support element projects from, the sealing shell and is provided with a flange that is associated with the flange.
Continued on page 3, paragraph 2 of the description introduction dated November 26) 1998.
Since the flange parts can be inserted into a recess of the valve housing, the two sealing shells can easily be pressed against the surface of the closure element as well as against the inner surface of the valve housing, thus achieving an excellent sealing effect between the closure element and the valve housing with just a few components, so that, even when the shut-off valve has been in operation for extended periods, it can be cleaned within a very short tame without this impairing the quality of the closure device. The metal iuaserts, which are inserted into the flange area, provide the necessary stiffness of the sealing shell, even at high temperatures, to ensure a flawless fit.
An essential improvement is achieved in that the insert of the sealing shell is made of steel or of a steel alloy and is shell-shaped and/or approximately corresponds to the spherical inner surface of the sealing shell.
One of the surfaces of the flange part of the insert can fie brought into contact against the sealing shell and its other swface against one side of the recess.
In order to attain sufficient pretensioning) it is advantageous for the inner diameter of both sealing shells - when they are joined - to be somewhat smaller than the outer diameter of the closwe element, and for the width of the two adjacent flanges of the sealing shells - when they are not assembled - to be somewhat larger than the width of the recess when tl~e valve housing is joined.
~1n additional improvement can be achieved in that the sealing shells have at least one ring-shaped recess with a semicircular cross section to receive at least one locking rung or O-ring) whereby said recess is provided in the area of at least one face of the sealing shell.
In an advantageous manner, the sealing sings can be configured so as to be springy.
Moreover, they can be designed as continuous or one-piece rings or else as split irngs~and can be made of a non-stick material, for example) of Teflon, PTFE or Delrin.
By the same token, the sealing shells can also be made of this material. As a result, the sliding capacity between the sealing element and the sealing shells is greatly improved. In addition, the surface of the sealing shell or the surface of the seat of the sealing shell in the valve housing can be provided with an appropriate lubricant and thus can ensure flawless, smooth turning of the closure element in the valve housing, but without impairing the sealing ability.
Furthermore, it is possible that the sealing shell and/or the closure element have at least ., one recess for receiving a split or axially halved O-ring in the area of a control shaft for adjusting the closure element.
Additional advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures. The following is shown:
Figure 1 an exploded view of the shut-off valve, Figure 2 one half of a sealing shell with a support element, Figure 3 another embodiment of a sealing shell, but without a support element, Figure 4 a cross section of the shut-off valve with the two opposite sealing shells and the sliding or rotatably supported closure element in a flow position, Figure 5 another embodiment of the shut-off valve in the same representation as in Figure 4, but with a support element provided in the sealing shells, Figure 6 various embodiments for receiving an O-ring seal in the individual sealing half shells. ' In Figure 1 of the drawing, reference numeral 1 designates the shut-off valve that consists of a two-part valve housing 3, 3'. Each half of the valve housing 3, 3' has a flange 28 with a threaded adapter 29 for connecting a pipeline 2. The flange 28 is provided with numerous boreholes 30 for receiving screw bolts 31 by means of which the two halves of the valve housing 3, 3' shown in Figure 5 are secured or held together.
The valve housing 3, 3' or the two halves of the valve housing are each provided with a valve seat 32 into which a closure element 5 can be inserted. The closure element 5 is spherical in shape and has a passage opening 4' whose flow area corresponds approxi-mately to a passage opening 4" of two sealing shells 6, 7 and a passage opening 4 of the valve housing 3 or 3'. As can be seen in Figures 4 and S, the passage opening 4' of the closure element 5 can have the exact same cross section as the passage opening 4" of the sealing shell 6, 7.
The closure element 5 can be rotated by 90° around a rotational axis 40. For this purpose, the surface of said closure element 5 has two swivel pins 33 that lie on the axis 40. One of these swivel pins 33 is provided with a square end 34. By using a wrench on the square end 34, the closure element 5 can be rotated around the axis 40 in such a way that its pas-sage opening 4' is aligned coaxially with the passage opening 4 of the valve housing 3 and with the passage opening 4" of the sealing shells 6 and 7.
At the height of the flow area, crosswise to the longitudinal axis 40, the closure element 5 is configured free of material towards one side, whereby only a remaining outer wall 35 of the closure element 5 facing the opposite side forms the sealing surface area of the free flow area along a flow axis 36.
As shown in Figures 4 and S, the two sealing shells 6 and 7 that are aligned coaxially with the flow axis 36 completely surround_the surface of the closure element 5 and thus also serve as a valve seat 32 for the sealing element 5.
For the sake of simplicity, Figure 1 only shows the left-hand sealing shell 7 without the flange 9. A second sealing shell 6 as shown in Figures 4 and 5 would be located between the closure element 5 and the right-hand half of the valve housing 3'. Both sealing shells or sealing half shells 6, 7 are brought into contact with each other in the assembled state shown in Figures 4 and S and, in this manner, they completely surround the closure ele-ment 5.
The sealing shells or sealing half shells 6, 7 can be accommodated in the seat 32 of the valve housing 3, 3' if the flanges 28 of the housing halves 3, 3' are brought into contact with each other. In order to ensure an adequate surface pressure between the surface of the outer wall 35 of the closure element 5 and the seat 32 in the valve housing ~3, both of the half shells 6, 7 shown in Figures 2 through 5 are provided with an appropriate flange 9, 9' that is ring-shaped and is only interrupted by an opening 38 that serves to hold the two .swivel pins 33. The outer diameter or the dimensions of the flange 9, 9' is larger than the outer diameter of the half shells 6, 7. When they are assembled, the two flanges of the two half shells 6, 7 are brought into contact and inserted into a recess 16 provided in the valve housing 3. In an advantageous manner, the width 18 of the flanges 9, 9' before the assembly is somewhat larger than the width of the recess 16 of the joined valve housing 3. Furthermore, the outer diameter of the spherical valve closure element 5 can likewise be somewhat larger than the inner diameter 17 of the seat 32 in the valve housing 3, 3', so that this ensures an appropriate pretensioning when the valve housing 3, 3' is joined with the half shells 6, 7.
An insert 10 and 11 shown in Figure 2 or the support element 10, 11 has been left out in the embodiment shown in Figures 1 and 3. In this case, the sealing shell 6 is made of a much harder or stronger material than what is used for the sealing shell 7 in the embodi-ment shown in Figures 2 and 5. As a result, a very precise fit of the inner surface 12 rela-tive to the outer surface or outer wall 35 of the closure element 5 has to be ensured in or-der to achieve flawless sealing. In this case as well, the elasticity of the sealing shells 6 and 7 is greater than the elasticity of the closure element 5. In both embodiments shown in Figures 2 and 3, each of the support elements 10, 11 of the sealing shells 6 and 7 has a flange 13 or 13' with a surface 14. Shown in Figure 1, the face 23 of the sealing shell 7, like the face 22 of the sealing shell 6, is configured flat so that they lie against each other precisely when they are assembled, thus completely surrounding the closure element 5.
The flange parts 13, 13' of the sealing shells 6 and 7 can be inserted into the recess 16 provided in the valve housing 3 so that, by pressing the two housing halves 3 and 3' of the valve housing together, a high surface pressure is ensured as a result of the preten-sioning between the inner surface 12 of the sealing shells 6 and 7 and the outer wall 35 of the closure element 5.
The sealing effect between the sealing shells 6 and 7 and the closure element 5 can be improved in that O-rings 19, 25 and 26, 27 are used. The O-ring 19 can be configured as a springy one-piece or split ring. The O-ring 19 is located in an appropriate recess 20 that is provided partially in the sealing shell 6 and partially in the oppositely situated sealing shell 7. By means of the O-ring 19, the surface pressure between the inner surface 12 of the two sealing shells 6 and 7 and the outer wall 35 of the sealing element 5 is further im-proved. The grooves or recesses 20 serve to receive an O-ring 26 in a way similar to re-cess 21 on the face 23 of the half shell 7. Thus, one half of the recess 21 is in the half shell 6 and the other in the housing half 3 of the valve housing.
Consequently, the O-rings 19 and 26 press the sealing shells 6, 7 against the surface of the closure element 5.
In order to ensure flawless sealing of the borehole 38 in the valve housing 3 or in the borehole of the closure element 5, the turning pin of the swivel pin or of the control shaft 33 is sealed by one or more O-ring gaskets or by the O-ring 25 that is positioned on the swive~ pin 33 for this purpose and part of which extends into the sealing shell 6 and 7.
The O-rings 19, 26, which can be configured as spring rings, can be made, for example, of Teflon, PTFE or Delrin. The material of the closure element 5, as already mentioned, can be made of an elastomeric material such as rubber. Likewise, it is possible to make the closure element 5 of a harder material, for example, Teflon or PTFE. In order to en-sure smooth turning of the closure element 5 in the valve housing 3, 3', the surfaces of the closure element 5 and the inner surface of the sealing shells 6 and 7 are provided with a lubricant layer or are coated with Teflon or PTFE.
In Figure 1, the assembly of the shut-off valve can readily be recognized.
First of all, the closure element 5 is placed into the valve seat 32 of the sealing shells 6 and 7 that are to be joined, whereby then the swivel pin 33 is inserted into the appropriate borehole 38 of the valve housing 3. Subsequently, the two sealing shells 6 and 7 are placed in contact against each other with their flanges 9 and/or 13. Before that, the O-rings 19 or 25 and 26 must have been placed into the appropriate recesses 20 and 21. Then the two sealing shells 6 and 7 can be completely joined and subsequently the housing halves 3, 3' of the valve housing can be secured by means of screw bolts 31. Due to the above-mentioned pretensioning, the desired sealing effect is achieved. For this purpose, the screw bolts 31, as already mentioned, have to be inserted into the boreholes 30 of the flange 28 and screwed together. Now the desired surface pressure between the inner surface 12 of the sealing shells 6 and 7 and the outer wall 35 of the closure element 5 has been achieved and so has a very precise sealing effect that will still withstand the stress, even if high flow rates occur or if flowing media at very high temperatures are used.
The closure element 5 can now be adjusted by moving the control shaft 33 out of the po-sition shown in Figures 4 and S (flow position) into a position as shown in Figure 1 (blocked position).
Moreover, it is possible to place rubber-elastic spring rings in the form of the above-mentioned O-rings on the faces of the sealing shells 6 and 7, whereby said rings can be inserted into the appropriate recesses 20. By using a rubber-elastic spring ring, the neces-sary contact pressure between the sealing element 5 and the sealing shells 6 and 7 is achieved in an advantageous manner.
By using Teflon, PTFE or Delrin for the sealing material or for the sealing shells 6 and 7, especially in the edge area of the sealing half shells, in conjunction with the measures al-ready described, the sealing effect of the shut-off valve is substantially improved, whereby a very good sealing effect is ensured, even during sterilization at very high working pressures, for example, using steam and hot liquids.
In order to make a compact unit for the sealing shells 6 and 7 with the closure element 5 contained therein, the two sealing shells can also be permanently attached to each other by means of an elastomeric adhesive.
Figures 6a through 6c show various embodiments for receiving the O-rings 19 in the sealing shells 6 and 7.
In Figure 6c, for example, the sealing shell 7 is pulled over the cylindrical body of the sealing shell 6 by means of a lug or a ring flange 39.
Reference numeral list 1 shut-off valve 2 pipeline 3, 3' valve housing (two-part) or housing half 4 passage opening to 4" passage opening / passage borehole closure element 6 sealing shell 7 sealing shell 8 face 9 flange (device) 9' flange part (device) insert or support element (left) 11 insert or support element (right) 12 inner surface of the sealing shell 6, 7 13 flange part 13' flange part 14 surface flange part surface flange part 16 recess 17 inner diameter / side 18 width of the flange 19 locking rings or O-rings recess 21 recess 22 face 23 face 24 control shaft 25 O-Ring 26 O-Ring 27 O-Ring 28 nange 29 threaded adapter 30 borehole 31 screw bolt 32 valve seat 33 swivel pin / control shaft 34 square end 35 outer wall 36 flow axis 38 borehole, opening 39 ~ ring flange 40 rotational axis Translation by: Duvekot Translators 2219 Brackenville Road Hockessin, DE 19707 Phone: (302) 234-0237 Fax:(302)234-0239 Toll-free: (800) 437-0237 e-mail: ledtrans@compuserve.com
A shut-off valve for pipelines and for tanks that hold liquids is already known which is fitted with a closure element and with a passage borehole positioned crosswise to the axis of oscillation of the closure element for purposes of opening and closing the entire free flow area (DE 44 09 796). At the height of the flow area, crosswise to the longitudinal axis, the closure element is configured free of material towards one side. The remaining outer wall of the closure element facing the opposite side forms the sealing surface axes of the free flow area along the flow axis. The spherical closure element is completely surrounded by two sealing half shells, except for the flow area. The closure element is supported in these half shells in such a way that it can slide and rotate. The two closure elements are held together by the divided housir~g az~d by appropriate screws.
U.S. Patent No. 3,336,938 likewise describes a shut-off valve for pipelines to hold liquids, whereby the shut-off valve is configured as a divided valve housing and consists merely of an elastic shaped part that is placed between the housing and the spherical element. Such a valve) however, is not suited to ensure flawless sealing, even when cleaning liquids having very high temperatures are used. Moreover, the known arrangement lacks an appropriate stabilization of the sealing half shells and a fixation of the insert that is designed as a support element in the flange area.
The invention has the objective of creating a shut-off valve of the type described above and configuring it so as to ensure flawless sealing, also when cleaning liquids are used, which can have a very high temperature, ox when sterile steam is employed.
The objective is achieved in that the sealing shells have an insert that is conf'xgured as a support element and that extends into the axes of a flange of the sealing shell and/or of the passage opening, and in that the insert or the support element projects from, the sealing shell and is provided with a flange that is associated with the flange.
Continued on page 3, paragraph 2 of the description introduction dated November 26) 1998.
Since the flange parts can be inserted into a recess of the valve housing, the two sealing shells can easily be pressed against the surface of the closure element as well as against the inner surface of the valve housing, thus achieving an excellent sealing effect between the closure element and the valve housing with just a few components, so that, even when the shut-off valve has been in operation for extended periods, it can be cleaned within a very short tame without this impairing the quality of the closure device. The metal iuaserts, which are inserted into the flange area, provide the necessary stiffness of the sealing shell, even at high temperatures, to ensure a flawless fit.
An essential improvement is achieved in that the insert of the sealing shell is made of steel or of a steel alloy and is shell-shaped and/or approximately corresponds to the spherical inner surface of the sealing shell.
One of the surfaces of the flange part of the insert can fie brought into contact against the sealing shell and its other swface against one side of the recess.
In order to attain sufficient pretensioning) it is advantageous for the inner diameter of both sealing shells - when they are joined - to be somewhat smaller than the outer diameter of the closwe element, and for the width of the two adjacent flanges of the sealing shells - when they are not assembled - to be somewhat larger than the width of the recess when tl~e valve housing is joined.
~1n additional improvement can be achieved in that the sealing shells have at least one ring-shaped recess with a semicircular cross section to receive at least one locking rung or O-ring) whereby said recess is provided in the area of at least one face of the sealing shell.
In an advantageous manner, the sealing sings can be configured so as to be springy.
Moreover, they can be designed as continuous or one-piece rings or else as split irngs~and can be made of a non-stick material, for example) of Teflon, PTFE or Delrin.
By the same token, the sealing shells can also be made of this material. As a result, the sliding capacity between the sealing element and the sealing shells is greatly improved. In addition, the surface of the sealing shell or the surface of the seat of the sealing shell in the valve housing can be provided with an appropriate lubricant and thus can ensure flawless, smooth turning of the closure element in the valve housing, but without impairing the sealing ability.
Furthermore, it is possible that the sealing shell and/or the closure element have at least ., one recess for receiving a split or axially halved O-ring in the area of a control shaft for adjusting the closure element.
Additional advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures. The following is shown:
Figure 1 an exploded view of the shut-off valve, Figure 2 one half of a sealing shell with a support element, Figure 3 another embodiment of a sealing shell, but without a support element, Figure 4 a cross section of the shut-off valve with the two opposite sealing shells and the sliding or rotatably supported closure element in a flow position, Figure 5 another embodiment of the shut-off valve in the same representation as in Figure 4, but with a support element provided in the sealing shells, Figure 6 various embodiments for receiving an O-ring seal in the individual sealing half shells. ' In Figure 1 of the drawing, reference numeral 1 designates the shut-off valve that consists of a two-part valve housing 3, 3'. Each half of the valve housing 3, 3' has a flange 28 with a threaded adapter 29 for connecting a pipeline 2. The flange 28 is provided with numerous boreholes 30 for receiving screw bolts 31 by means of which the two halves of the valve housing 3, 3' shown in Figure 5 are secured or held together.
The valve housing 3, 3' or the two halves of the valve housing are each provided with a valve seat 32 into which a closure element 5 can be inserted. The closure element 5 is spherical in shape and has a passage opening 4' whose flow area corresponds approxi-mately to a passage opening 4" of two sealing shells 6, 7 and a passage opening 4 of the valve housing 3 or 3'. As can be seen in Figures 4 and S, the passage opening 4' of the closure element 5 can have the exact same cross section as the passage opening 4" of the sealing shell 6, 7.
The closure element 5 can be rotated by 90° around a rotational axis 40. For this purpose, the surface of said closure element 5 has two swivel pins 33 that lie on the axis 40. One of these swivel pins 33 is provided with a square end 34. By using a wrench on the square end 34, the closure element 5 can be rotated around the axis 40 in such a way that its pas-sage opening 4' is aligned coaxially with the passage opening 4 of the valve housing 3 and with the passage opening 4" of the sealing shells 6 and 7.
At the height of the flow area, crosswise to the longitudinal axis 40, the closure element 5 is configured free of material towards one side, whereby only a remaining outer wall 35 of the closure element 5 facing the opposite side forms the sealing surface area of the free flow area along a flow axis 36.
As shown in Figures 4 and S, the two sealing shells 6 and 7 that are aligned coaxially with the flow axis 36 completely surround_the surface of the closure element 5 and thus also serve as a valve seat 32 for the sealing element 5.
For the sake of simplicity, Figure 1 only shows the left-hand sealing shell 7 without the flange 9. A second sealing shell 6 as shown in Figures 4 and 5 would be located between the closure element 5 and the right-hand half of the valve housing 3'. Both sealing shells or sealing half shells 6, 7 are brought into contact with each other in the assembled state shown in Figures 4 and S and, in this manner, they completely surround the closure ele-ment 5.
The sealing shells or sealing half shells 6, 7 can be accommodated in the seat 32 of the valve housing 3, 3' if the flanges 28 of the housing halves 3, 3' are brought into contact with each other. In order to ensure an adequate surface pressure between the surface of the outer wall 35 of the closure element 5 and the seat 32 in the valve housing ~3, both of the half shells 6, 7 shown in Figures 2 through 5 are provided with an appropriate flange 9, 9' that is ring-shaped and is only interrupted by an opening 38 that serves to hold the two .swivel pins 33. The outer diameter or the dimensions of the flange 9, 9' is larger than the outer diameter of the half shells 6, 7. When they are assembled, the two flanges of the two half shells 6, 7 are brought into contact and inserted into a recess 16 provided in the valve housing 3. In an advantageous manner, the width 18 of the flanges 9, 9' before the assembly is somewhat larger than the width of the recess 16 of the joined valve housing 3. Furthermore, the outer diameter of the spherical valve closure element 5 can likewise be somewhat larger than the inner diameter 17 of the seat 32 in the valve housing 3, 3', so that this ensures an appropriate pretensioning when the valve housing 3, 3' is joined with the half shells 6, 7.
An insert 10 and 11 shown in Figure 2 or the support element 10, 11 has been left out in the embodiment shown in Figures 1 and 3. In this case, the sealing shell 6 is made of a much harder or stronger material than what is used for the sealing shell 7 in the embodi-ment shown in Figures 2 and 5. As a result, a very precise fit of the inner surface 12 rela-tive to the outer surface or outer wall 35 of the closure element 5 has to be ensured in or-der to achieve flawless sealing. In this case as well, the elasticity of the sealing shells 6 and 7 is greater than the elasticity of the closure element 5. In both embodiments shown in Figures 2 and 3, each of the support elements 10, 11 of the sealing shells 6 and 7 has a flange 13 or 13' with a surface 14. Shown in Figure 1, the face 23 of the sealing shell 7, like the face 22 of the sealing shell 6, is configured flat so that they lie against each other precisely when they are assembled, thus completely surrounding the closure element 5.
The flange parts 13, 13' of the sealing shells 6 and 7 can be inserted into the recess 16 provided in the valve housing 3 so that, by pressing the two housing halves 3 and 3' of the valve housing together, a high surface pressure is ensured as a result of the preten-sioning between the inner surface 12 of the sealing shells 6 and 7 and the outer wall 35 of the closure element 5.
The sealing effect between the sealing shells 6 and 7 and the closure element 5 can be improved in that O-rings 19, 25 and 26, 27 are used. The O-ring 19 can be configured as a springy one-piece or split ring. The O-ring 19 is located in an appropriate recess 20 that is provided partially in the sealing shell 6 and partially in the oppositely situated sealing shell 7. By means of the O-ring 19, the surface pressure between the inner surface 12 of the two sealing shells 6 and 7 and the outer wall 35 of the sealing element 5 is further im-proved. The grooves or recesses 20 serve to receive an O-ring 26 in a way similar to re-cess 21 on the face 23 of the half shell 7. Thus, one half of the recess 21 is in the half shell 6 and the other in the housing half 3 of the valve housing.
Consequently, the O-rings 19 and 26 press the sealing shells 6, 7 against the surface of the closure element 5.
In order to ensure flawless sealing of the borehole 38 in the valve housing 3 or in the borehole of the closure element 5, the turning pin of the swivel pin or of the control shaft 33 is sealed by one or more O-ring gaskets or by the O-ring 25 that is positioned on the swive~ pin 33 for this purpose and part of which extends into the sealing shell 6 and 7.
The O-rings 19, 26, which can be configured as spring rings, can be made, for example, of Teflon, PTFE or Delrin. The material of the closure element 5, as already mentioned, can be made of an elastomeric material such as rubber. Likewise, it is possible to make the closure element 5 of a harder material, for example, Teflon or PTFE. In order to en-sure smooth turning of the closure element 5 in the valve housing 3, 3', the surfaces of the closure element 5 and the inner surface of the sealing shells 6 and 7 are provided with a lubricant layer or are coated with Teflon or PTFE.
In Figure 1, the assembly of the shut-off valve can readily be recognized.
First of all, the closure element 5 is placed into the valve seat 32 of the sealing shells 6 and 7 that are to be joined, whereby then the swivel pin 33 is inserted into the appropriate borehole 38 of the valve housing 3. Subsequently, the two sealing shells 6 and 7 are placed in contact against each other with their flanges 9 and/or 13. Before that, the O-rings 19 or 25 and 26 must have been placed into the appropriate recesses 20 and 21. Then the two sealing shells 6 and 7 can be completely joined and subsequently the housing halves 3, 3' of the valve housing can be secured by means of screw bolts 31. Due to the above-mentioned pretensioning, the desired sealing effect is achieved. For this purpose, the screw bolts 31, as already mentioned, have to be inserted into the boreholes 30 of the flange 28 and screwed together. Now the desired surface pressure between the inner surface 12 of the sealing shells 6 and 7 and the outer wall 35 of the closure element 5 has been achieved and so has a very precise sealing effect that will still withstand the stress, even if high flow rates occur or if flowing media at very high temperatures are used.
The closure element 5 can now be adjusted by moving the control shaft 33 out of the po-sition shown in Figures 4 and S (flow position) into a position as shown in Figure 1 (blocked position).
Moreover, it is possible to place rubber-elastic spring rings in the form of the above-mentioned O-rings on the faces of the sealing shells 6 and 7, whereby said rings can be inserted into the appropriate recesses 20. By using a rubber-elastic spring ring, the neces-sary contact pressure between the sealing element 5 and the sealing shells 6 and 7 is achieved in an advantageous manner.
By using Teflon, PTFE or Delrin for the sealing material or for the sealing shells 6 and 7, especially in the edge area of the sealing half shells, in conjunction with the measures al-ready described, the sealing effect of the shut-off valve is substantially improved, whereby a very good sealing effect is ensured, even during sterilization at very high working pressures, for example, using steam and hot liquids.
In order to make a compact unit for the sealing shells 6 and 7 with the closure element 5 contained therein, the two sealing shells can also be permanently attached to each other by means of an elastomeric adhesive.
Figures 6a through 6c show various embodiments for receiving the O-rings 19 in the sealing shells 6 and 7.
In Figure 6c, for example, the sealing shell 7 is pulled over the cylindrical body of the sealing shell 6 by means of a lug or a ring flange 39.
Reference numeral list 1 shut-off valve 2 pipeline 3, 3' valve housing (two-part) or housing half 4 passage opening to 4" passage opening / passage borehole closure element 6 sealing shell 7 sealing shell 8 face 9 flange (device) 9' flange part (device) insert or support element (left) 11 insert or support element (right) 12 inner surface of the sealing shell 6, 7 13 flange part 13' flange part 14 surface flange part surface flange part 16 recess 17 inner diameter / side 18 width of the flange 19 locking rings or O-rings recess 21 recess 22 face 23 face 24 control shaft 25 O-Ring 26 O-Ring 27 O-Ring 28 nange 29 threaded adapter 30 borehole 31 screw bolt 32 valve seat 33 swivel pin / control shaft 34 square end 35 outer wall 36 flow axis 38 borehole, opening 39 ~ ring flange 40 rotational axis Translation by: Duvekot Translators 2219 Brackenville Road Hockessin, DE 19707 Phone: (302) 234-0237 Fax:(302)234-0239 Toll-free: (800) 437-0237 e-mail: ledtrans@compuserve.com
Claims (10)
1. Shut-off valve (1) for pipelines (2) and/or for tanks that hold liquids, whereby the shut-off valve (1) has a two-part valve housing (3) with a passage opening (4) in which there is likewise a sliding and/or rotatably supported spherical closure element (5) that has a passage opening (4') and that is surrounded by two half-shell shaped sealing shells (6, 7) that form a passage opening (4") that corresponds to the passage opening (4') of the closure element (5), whereby the sealing shells (6, 7) consist of a softer or more elastic material in comparison to the closure element (5), characterized in that the sealing shells (6, 7) have an insert (11) that is configured as a support element and that extends into the area of a flange (9) of the sealing shell and/or of the passage opening (4'), and in that the insert or support element projects from the sealing shell (6, 7) and forms a flange (13, 13') that is associated with the flange (9).
2. Shut-off valve according to Claim 1, characterized in that the insert (11) of the sealing shell (6, 7) is made of steel or of a steel alloy and is shell-shaped and/or approximately corresponds to the spherical inner surface (12) of the sealing shell (6, 7).
3. Shut-off valve according to Claim 1, characterized in that one of the surfaces (14) of flange part (13) can be brought into contact against the sealing shell (6, 7) and its other surface (15) can be brought into contact against one side of the recess (16).
4. Shut-off valve according to one of the preceding claims, characterized in that the inner diameter (17) of the two sealing shells (6, 7) - when they are joined -is somewhat smaller than the outer diameter of the closure element (5).
5. Shut-off valve according to one of the preceding claims, characterized in that the width (18) of the two adjacent flanges (9) of the sealing shell (6, 7) -- when they are not assembled - is somewhat larger than the width of the recess (16) when the valve housing (3) is joined.
6. Shut-off valve according to one of the preceding claims, characterized in that the sealing shells (6, 7) have at least one ring-shaped recess (20) with a semicircular cross section to receive at least one locking ring or O-ring (19), whereby said recess (20) is provided in the axes of at least one face (22, 23) of the sealing shell (6, 7).
7. Shut-off valve according to one of the preceding claims, characterized in that the O-rings (25, 26, 27) are configured as spring rings.
8. Shut-off valve according to one of the preceding claims, characterized in that the O-rings (25, 26) and/or the sealing shells (6, 7) are made of Teflon or PTFE
or Delrin or of another elastic material.
or Delrin or of another elastic material.
9. Shut-off valve according to one of the preceding claims, characterized in that, at least a part of the surfaces that are in contact with each other between the closure element (5) and the sealing shell (6, 7) and/or the O-rings (19) have a lubricant layer or a coating of Teflon or PTFE.
10. Shut-off valve according to one of the preceding claims, characterized in that the sealing shells (6, 7) and/or the closure element (5) have at least one recess (20) for receiving a split or axially halved O-ring (25) in the area of a control shaft (24) for adjusting the closure element (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19701213A DE19701213C1 (en) | 1997-01-16 | 1997-01-16 | Shut-off valve for pipes |
| DE19701213.2 | 1997-01-16 | ||
| PCT/EP1998/000182 WO1998031956A1 (en) | 1997-01-16 | 1998-01-14 | Shut-off valve for pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2278471A1 true CA2278471A1 (en) | 1998-07-23 |
Family
ID=7817463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002278471A Abandoned CA2278471A1 (en) | 1997-01-16 | 1998-01-14 | Shut-off valve for pipes |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6186476B1 (en) |
| EP (1) | EP0953123B1 (en) |
| AT (1) | ATE204631T1 (en) |
| AU (1) | AU5863698A (en) |
| CA (1) | CA2278471A1 (en) |
| DE (2) | DE19701213C1 (en) |
| ES (1) | ES2163249T3 (en) |
| HU (1) | HUP0001039A3 (en) |
| PL (1) | PL185937B1 (en) |
| WO (1) | WO1998031956A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10113121C2 (en) * | 2001-03-17 | 2003-11-27 | Alexander Gleinser | Actuating device for line fittings |
| US7926785B2 (en) * | 2005-06-22 | 2011-04-19 | Wincek Christopher P | Valve diaphragm with a compression restraining ring, and valve including same |
| US20070029517A1 (en) * | 2005-08-04 | 2007-02-08 | Gemco Valve Company | Spherical disc valve configured for gravity fed powders |
| FR2922984B1 (en) * | 2007-10-31 | 2013-09-27 | Saint Gobain Performance Plast | VALVE HAVING RIGID SEAL |
| US8348236B2 (en) * | 2007-10-31 | 2013-01-08 | Saint-Gobain Performance Plastics Corporation | Butterfly valve with a rigid seal |
| FR2922988B1 (en) | 2007-10-31 | 2012-10-12 | Saint Gobain Performance Plast | PIPE ASSEMBLIES |
| DE202009010027U1 (en) | 2009-07-22 | 2009-10-01 | Jakob, Jan-Patrick | shut-off valve |
| US8910921B2 (en) * | 2011-10-27 | 2014-12-16 | Aegis Flow Technologies, L.L.C. | Valve and stem sealing assembly |
| BE1024257B1 (en) * | 2016-06-03 | 2018-01-15 | Inno-Mould Nv | CORROSION RESISTANT BALL VALVE |
| DE202020104887U1 (en) | 2020-08-24 | 2020-09-10 | GULBINAT Systemtechnik GmbH & Co. KG | Ball valve |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1795531U (en) * | 1959-02-28 | 1959-09-10 | Friedrich Stuebbe | TAP WITH A ROTATING PLUG WITH A MEANS OF A SPINDLE IN A TAP HOUSING. |
| US3056576A (en) * | 1959-12-10 | 1962-10-02 | Homestead Valve Mfg Co | Replaceable seat washer in spherical plug valve |
| US3227174A (en) * | 1963-04-30 | 1966-01-04 | Allegheny Plastics | Valve and method of making it |
| US3244398A (en) * | 1963-10-28 | 1966-04-05 | Scaramucci Domer | Composite seat ball valve |
| US3334650A (en) * | 1964-03-12 | 1967-08-08 | Acf Ind Inc | Valve |
| US3336938A (en) * | 1964-03-19 | 1967-08-22 | Duriron Co | Valves |
| US3367359A (en) * | 1966-01-05 | 1968-02-06 | Herbert G. Johnson | Ball valve assembly with corrosion resistant lining |
| GB1210568A (en) | 1967-09-22 | 1970-10-28 | Sumitomo Chemical Co | 2-aminomethylindole derivatives and a process for preparing 1,4-benzodiazepine derivatives |
| DE1804604A1 (en) | 1968-10-23 | 1970-05-27 | Georg Fritz | Ball valve |
| GB1293381A (en) | 1969-02-12 | 1972-10-18 | Serck Industries Ltd | Rotary ball valve |
| US4696323A (en) * | 1985-08-30 | 1987-09-29 | Neotecha Ag | Plastic lined rotatable valve |
| DE4414716A1 (en) | 1994-01-26 | 1995-07-27 | Klein Schanzlin & Becker Ag | Swivel armature |
| DE4409796C1 (en) * | 1994-03-22 | 1995-06-29 | Karl W Goldsweer | Shut-off valve for pipe lines |
-
1997
- 1997-01-16 DE DE19701213A patent/DE19701213C1/en not_active Expired - Fee Related
-
1998
- 1998-01-14 CA CA002278471A patent/CA2278471A1/en not_active Abandoned
- 1998-01-14 EP EP98901968A patent/EP0953123B1/en not_active Expired - Lifetime
- 1998-01-14 WO PCT/EP1998/000182 patent/WO1998031956A1/en active IP Right Grant
- 1998-01-14 HU HU0001039A patent/HUP0001039A3/en unknown
- 1998-01-14 DE DE59801247T patent/DE59801247D1/en not_active Expired - Fee Related
- 1998-01-14 ES ES98901968T patent/ES2163249T3/en not_active Expired - Lifetime
- 1998-01-14 PL PL98334475A patent/PL185937B1/en not_active IP Right Cessation
- 1998-01-14 AU AU58636/98A patent/AU5863698A/en not_active Abandoned
- 1998-01-14 AT AT98901968T patent/ATE204631T1/en not_active IP Right Cessation
- 1998-01-14 US US09/341,793 patent/US6186476B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0953123A1 (en) | 1999-11-03 |
| ES2163249T3 (en) | 2002-01-16 |
| DE19701213C1 (en) | 1998-10-01 |
| HUP0001039A3 (en) | 2001-04-28 |
| ATE204631T1 (en) | 2001-09-15 |
| DE59801247D1 (en) | 2001-09-27 |
| PL185937B1 (en) | 2003-09-30 |
| US6186476B1 (en) | 2001-02-13 |
| AU5863698A (en) | 1998-08-07 |
| WO1998031956A1 (en) | 1998-07-23 |
| HUP0001039A2 (en) | 2000-09-28 |
| PL334475A1 (en) | 2000-02-28 |
| EP0953123B1 (en) | 2001-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |