CN101119910B - Seal assembly for a pressurised container - Google Patents
Seal assembly for a pressurised container Download PDFInfo
- Publication number
- CN101119910B CN101119910B CN200680004968.5A CN200680004968A CN101119910B CN 101119910 B CN101119910 B CN 101119910B CN 200680004968 A CN200680004968 A CN 200680004968A CN 101119910 B CN101119910 B CN 101119910B
- Authority
- CN
- China
- Prior art keywords
- hermetic unit
- poted assemblies
- sealing member
- sealing
- valve rod
- 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.)
- Active
Links
Images
Abstract
A seal assembly for a pressurised container (2) comprising a first seal portion (16) and a second seal portion (18). The first seal portion (16) is adapted to form a seal with an output section (14) of the pressurised container (2) and an end face (26) thereof, and the second seal portion (18) is adapted to form a seal with a side wall (28) of the output section (14).
Description
Technical field
The present invention relates to a kind of poted assemblies that is used for pressurizing vessel.Specifically but not exclusively, the present invention relates to a kind of at aerosol can valve rod and the solenoid valve assembly between the poted assemblies that uses.The invention still further relates to a kind of sprinkler, be specifically related to but be not limited to be used for the switch block of sprinkler.
Background technology
Existing sprinkler generally includes the aerosol container that remains on appropriate location, movable arm below.Can control this movable arm by timer and motor, thus described arm at time gap motion of setting and the outlet valve of depressing aerosol container, thereby the spraying of material is sprayed from aerosol container.
The shortcoming of such device is, in order to ensure the starting of aerosol container, must utilize relatively large power to realize the motion of described arm.Yet, unless very strictly control tolerance, the slight lateral movement of the take-off lever of aerosol container can cause the damage of aerosol container owing to the power that movable arm applies.The bar of aerosol container can rupture, thereby causes the fault of sprinkler.
Between the valve rod of aerosol can and actuation part (the normally delivery channel of pressurizing vessel or pipeline), packing ring usually is set.This packing ring forms the gas tight seal around valve rod, thereby guarantees not have fluid to be lost in the environment.
Yet because the long-term use of pressurizing vessel, the life-span of packing ring usually shortens.In addition, owing to valve rod inserts in the actuation part of container improperly, thereby damage packing ring easily.
Summary of the invention
The objective of the invention is to address the above problem.
According to a first aspect of the invention, a kind of poted assemblies that is used for pressurizing vessel is provided, the sealing assembly comprises first hermetic unit and second hermetic unit, wherein said first hermetic unit is suitable for forming sealing with the end face of the efferent of described pressurizing vessel, and described second hermetic unit is suitable for forming sealing with the sidewall of described efferent.
Described pressurizing vessel can be an aerosol can.Described efferent can be a valve rod.
In this structure, valve rod has the sidewall perpendicular to end face usually, thereby the sealing force that acts on the described valve rod roughly is perpendicular to one another usually.This provides double seal configuration with respect to described valve rod to guarantee effective seal.In addition, under the situation that described first hermetic unit or second hermetic unit are worn owing to repeated usage, will utilize another hermetic unit.Thereby reduced the risk of seal failure.
Be well known that valve rod can damage, and parts can fracture and break away from the main body of valve rod, thereby fluid can be overflowed through sealing member.For example, in this structure, because valve stem crack and under the impaired situation, described second hermetic unit will be as the guarantee that prevents that fluid from overflowing in described first.Like this too for optional structure.
Similarly be that the user of pressurizing vessel is mal-alignment valve rod in the part that activates jar usually.Be well known that mal-alignment can damage packing ring, thereby cause the seal ruptures between valve rod and the actuator.Advantageously, the invention provides a kind of optional sealing member that is used for specifically under the situation of damaging described second hermetic unit, keeping seal construction.
Structure with two hermetic units is for particular importance for using in the container of pressurizing vessel that comprises harmful chemicals or dispensing metered dose.In these devices, jar an interior material is overflowed and the unusual key of the risk minimization that loses.Therefore, described two sealing members preferably independent and redundancy is provided in sealing function; If described first seal fails, then independently second sealing member will provide sealing function.The separate part of described first sealing member and the described efferent of the second sealing member preferably sealed.Described first sealing member preferably is suitable for slight deformation, forms depression therein to allow described efferent.The end face of described first sealing member and described efferent preferably is suitable in use roughly coplanar aligned.
Described end face and described sidewall preferably are perpendicular to one another.The cross section of this sidewall is preferably circle.
Described first hermetic unit and described second hermetic unit can be made for monomer members.
Advantageously, compare with two individual members, this monomer members is handled easily, therefore easier replacement or assembling.
Preferably, described first hermetic unit comprises smooth packing ring.
Preferably, described second hermetic unit comprises O-ring packing.
Preferably, described first hermetic unit and/or described second hermetic unit are by any suitable elastic body manufacturing, for example silica-based and carbon based elastomeric polymers.Suitable material comprises natural rubber and neoprene, for example butyronitrile, poly-butadiene, polyisoprene, butylbenzene, styrene-isoprene copolymer, butyl rubber, acrylic rubber, silicone (specifically being organosiloxane, for example dialkyl siloxane) and such as the alkadiene of ethene-diene monomer.Other suitable material comprise cast polyurethane, ethylene propylene diene rubber (EPDM), fluorosilicone, carbon fluorine/fluorosilicone compound, high saturated nitriles, alcohol, poly-chloroprene rubber, nitrile (buna-N), polyacrylates, polyurethane, SBR (buna-S), silicone, thiokol,
With
More preferably, described first hermetic unit and/or described second hermetic unit by trade mark are
The well known materials manufacturing.
Preferably, coating is set to increase the chemical resistance of described sealing member on material.For example, can pass through the encapsulation of PTFE (polytetrafluoroethylene) coating
Preferably, the hardness nominal value of described first hermetic unit and/or described second hermetic unit is Xiao's formula A level 60 to 80 degree hardness, more preferably 65 to 75 degree hardness.
Preferably, described first and preferably the size of described second portion be decided to be and hold the valve rod of diameter between 0.1 to 10mm.Most preferably, the size of described hermetic unit be decided to be hold diameter 2.8 and 4.0mm between valve rod.
Advantageously, described first hermetic unit and/or described second portion will be fit to multiple stem diameter.Like this, described poted assemblies can be used in the multiple different aerosol dispensers.This has reduced manufacturing cost.
Described first hermetic unit preferably leads to a valve, and this valve is preferably solenoid valve.Described poted assemblies is advantageous particularly when using with solenoid valve, and is particularly all the more so when using with the solenoid valve by reed switch control.
Preferably, between described first hermetic unit and described second hermetic unit, partition is set.Preferably, this partition is attached to described first hermetic unit and/or described second hermetic unit.Preferably, described first hermetic unit, described second hermetic unit and described partition are made for monomer members.
Advantageously, described partition in use can swell and expand described first hermetic unit and/or described second hermetic unit, thereby makes described hermetic unit that the actv. hermetically-sealed construction can be provided.
Preferably, described partition is made by appropriate plastic material.
Preferably, described first hermetic unit, described second hermetic unit and described partition keep together by covering profiled member or lid.This lid is preferably made by plastic material and preferably by being ultrasonically bonded on described hermetic unit and the described partition.In this structure, advantageously, described lid provides the rigid support to described poted assemblies.
According on the other hand, the invention provides a kind of pressurizing vessel, this pressurizing vessel comprises housing, has the aerosol can and the valve arrangement of valve rod, poted assemblies wherein is set between described valve rod and described valve arrangement, to form sealing, the sealing assembly comprises first hermetic unit and second hermetic unit, described first hermetic unit is suitable for forming sealing with the efferent of described pressurizing vessel and the end face of this output, and described second hermetic unit is suitable for forming sealing with the sidewall of described efferent.
Preferably, between described first hermetic unit and described second hermetic unit, partition is set.
According to an aspect of the present invention, a kind of sprinkler that remains on aromatic, Pesticidal combination and/or Cleasing compositions in the pressurizing vessel that is used to spray is provided, this sprinkler comprises container acceptance division and switch portion, and wherein this switch portion is combined with solenoid switch.
Advantageously, compare with one type of prior art syringe, the sprinkler that uses solenoid switch to control material as mentioned above provides excellent output control.
Described solenoid switch can be combined with resilient bias, and this resilient bias can be a disc spring, is preferably under the not pressure texture that extends the spring that is cone shape, is preferably frusto-conical.Preferably, described spring shape in the shape of a spiral when being in pressure texture preferably has the degree of depth for the spring single turn when compression.
Advantageously, use cone shaped spring to carry out auto-centering to the solenoid armature that resilient bias pushed.And, the thin assembly (package) that described cone shaped spring boil down to is favourable, thus the air gap of screw actuator magnetic circuit can be minimized.
Preferably, described resilient bias is positioned in the recess of described armature, and the degree of depth of described recess is approximately the thickness of described resilient bias when being compressed.
Preferably, described recess is positioned at the place, end of described armature.
Described screw actuator can be combined with bobbin element, on this bobbin element or can twine described solenoidal coil on every side.Described bobbin can provide framework, can locate described solenoidal magnetic circuit on this framework.
Advantageously, described bobbin provides leak free design, only has opening at its arrival end and exit end place.And described bobbin forms the framework that can be fastened with described solenoidal other parts.
Preferably, described bobbin and described magnetic circuit have be positioned between them, the preferred sealing member around the exit opening in described sleeve.The sealing part is preferably in the assembly process deformable of described switch portion or be suitable for deformable.Preferably, described sealing member is in the assembly process distortion of described switch portion.Preferably, described sealing member is suitable for stoping fluid to flow out from the runner of described bobbin, and described runner is preferably placed between the inside of described solenoidal armature and described bobbin.Described sealing member can be annular.
Described magnetic circuit can comprise at least the first parts and second parts.First parts of described magnetic circuit can be U-shaped, and preferably its cross section is roughly square.Described first parts can be combined with the exit opening of described switch portion.Second parts of described magnetic circuit can be roughly the flat end that is suitable for closed described U-shaped first parts.Described second parts of described magnetic circuit preferably have opening, are preferably central opening.Preferably, described armature stretches in the described opening.Preferably, described opening receives the part of described bobbin.Preferably, described second parts are thicker than described first parts.
Advantageously, the thickness of described second parts has reduced the magnetic resistance of described magnetic circuit.
Described second parts can be fixed to described first parts by flanging part, and this flanging part can be the part of described first parts.
Described first parts preferably are combined with conducting element near described exit opening.This conducting element can be a groove, and this groove can extend away from described opening (both sides of preferred described opening), thereby preferably with the described opening of direct fluid.Described conducting element can be adjustable, and described air deflector can be to be fixed on air deflector in described first parts by the screw thread that is bonded with each other.Can carry out this adjusting and spray, for example widen or dwindle the spray cone of described device to regulate outlet.
Described bobbin preferred combination has the inlet opening of the runner that enters described bobbin.This inlet opening preferably enters described runner at its protrusion.This protrusion preferably is suitable for receiving packing element.Advantageously, described protrusion provides the cross section that reduces, and described packing element is suitable for being resisted against on this cross section.Preferably, described packing element is the floating seal element.Preferably, described packing element remains between the platform part of described armature and described protuberance.
Described container acceptance division preferably is received in or is positioned on the described bobbin, the described bobbin of at least one element encompasses of preferred described container acceptance division.Preferably, described container acceptance division is roughly coaxial with described bobbin.The action that described container acceptance division advantageously inserts described solenoid switch or take out with the user material container separates.
Preferably, described packing element is suitable at the described runner of pressure lower seal up to about 10 crust (bar), preferred about 11 crust, preferred about 12 crust, preferred about 13 crust.
Preferably, described armature about 0.1mm to 0.6mm that is suitable for advancing, preferably approximately 0.18 to 0.45mm.
Preferably, described switching device be suitable for utilizing viscosity less than about 15cP, preferably less than about 13cP, preferably less than about 11cP, preferably be less than or equal to the fluid operating of about 10cP.
Preferably, described disc spring has about 100 to 300 circles, preferably has about 250 to 500AT, 300 to 450AT ampere turn value preferably approximately.
Preferably, in use, the maximum current by described coil is approximately 3A, preferably less than about 2A.
Preferably, described armature has about 7ms, preferably approximately 5ms, the response time of 3ms more preferably.
According to a further aspect in the invention, a kind of sprinkler is provided, this sprinkler comprises container acceptance division and switch portion, and wherein said switch portion comprises the solenoid switch with bobbin element, on described bobbin element or be positioned with described solenoidal magnetic circuit on every side.
According to a further aspect in the invention, a kind of sprinkler is provided, this sprinkler comprises container acceptance division and switch portion, wherein said switch portion comprises the solenoid switch with bobbin element, in described bobbin element, maintain described solenoidal magnetic armature, wherein between the inlet part of described armature and described bobbin, maintain packing element.
All features as herein described can be with the mode and the combination of above either side of combination in any.
Description of drawings
In order to understand the present invention better and illustrate how to realize embodiments of the present invention, below will be with the form of embodiment with reference to accompanying drawing, in the accompanying drawing:
Fig. 1 is the schematic sectional block diagram of the switch portion of sprinkler;
Fig. 2 is the framework of switch portion shown in Figure 1 and the schematic side elevation of bobbin portion;
Fig. 3 is the framework shown in Figure 2 and the schematic elevational view of bobbin portion;
Fig. 4 is the in the closed position and attached schematic cross sectional views that the switch portion of aerosol can is arranged;
Fig. 5 is the schematic side elevation of the switch portion that is shown in an open position;
Fig. 6 is the side schematic sectional view according to pressurizing vessel of the present invention;
Fig. 7 represents the schematic cross sectional views on the top of pressurizing vessel;
Fig. 8 represents the schematic cross sectional views on top of second embodiment of pressurizing vessel; And
Fig. 9 represents the schematic cross sectional views on top of the 3rd embodiment of pressurizing vessel.
The specific embodiment
The switch portion 10 of sprinkler comprises following with the solenoid switch of describing.The outlet bar 12 of aerosol container 14 (see figure 4)s is received in the under shed 16 of switch portion 10.Valve rod 12 is by O shape ring 18 and face seal element 20 sealings.O shape ring 18 and face seal element separate by partition 22.Face seal element has the opening 24 that the material from aerosol can 14 can pass through.Face seal element 20 is led to chamber 26, and chamber 26 is towards inlet pin-and-hole 28 convergents.Inlet pin-and-hole 28 is by primary seal element 30 sealings, and this primary seal element 30 keeps and inlet pin-and-hole 28 sealed engagement by moveable magnetic armature 32.
Moveable magnetic armature 32 is positioned in the plastic bobbin 34, can be along the direction up-and-down movement of the arrow A of Fig. 1, and as described below.Plastic bobbin 34 also provides the position for the copper winding 38 that forms a solenoidal part.Formed with the following iron frame 40b that contacts with last iron frame 40a by the last iron frame 40a on the outside that is positioned at plastic bobbin 34 and to be used for solenoidal magnetic circuit.Iron crimping 40c is the part of upward iron frame 40a and is used for the remainder of last iron frame 40a and following iron frame 40b and switch portion 10 is kept together.
Usually, switch portion 10 is the battery powered solenoid valves that are used to control the sprinkling of fluid.Switch portion 10 is designed to the fluid discharging from for example aerosol can is controlled, and this aerosol can is by precharge and be equipped with the continuous type blowoff valve.
Get back to the base portion of switching device in more detail, opening 16 is parts of aerosol interface chamber element 13, and has the cylindrical shape that band is expanded opening slightly for the bar 12 that receives aerosol can 14 better.Bar 12 by means of the face sealing of the end of opening 16 and face seal element 20 and with the O shape ring sealing of O shape ring 18 and sealing near switch portion 10, O shape ring 18 is slightly inwardly outstanding from the inside face of opening cylinder 16.These sealings all are arranged to prevent the content leaks of aerosol can 14.
Interface chamber is by utilizing bolt 15 (seeing Fig. 2 and Fig. 3) to form by the plastic components 13 that ultrasonic welding is fastened to bobbin 34, and bolt 15 passes interface chamber element 13 from bobbin 34 and gives prominence to.These protrusions are arranged in each place, angle of the square shaped top of interface chamber element 13.Two bolts 15 on relative angle, diagonal angle are bigger than other two bolts, and are arranged for and easily locate interface chamber element 13 and bobbin 34.Welding has guaranteed that time iron frame 40b is fastened between bobbin 34 and the following interface element 13.Last iron frame 40a and following iron frame 40b carry out crimping and are bonded together by exerting pressure to the outward flange of iron crimping 40c as mentioned above, for example see Fig. 2.
In use, switch portion is fastened to aerosol can 14, and the bar 12 of aerosol can 14 is received in the opening 16 as mentioned above.Aerosol can 14 has the valve of continuous blow-down type, and bar 12 is depressed the material that just means from aerosol can 14 by switch portion 10 and can be left this jar and enter chamber 26 and rise to primary seal element 30.Prevent that by O shape ring 18 and face seal element 20 material from leaking out opening 16 from aerosol can.Opening 24 in the face seal element 20 allows material to enter chamber 26 and rise to primary seal element 30 along inlet pin-and-hole 28 from described jar.This advantage that has is that switch portion 10 is controlled discharging fully, rather than the valve of aerosol can 14 control discharging.
As shown in Figure 4, primary seal element 30 by from the pressure biased downward of moveable magnetic armature 32 on the platform part 36 of protuberance, by the spring 44 downward application of forces, spring 44 will be explained in more detail moveable magnetic armature 32 below again.Not to coil winding 38 power supplies the time, present this structure.
When needs during from aerosol can 14 exhaust fluid, apply electric current to coil 38, make the structure that moveable magnetic armature 32 is shown in Figure 5 owing to magnetic induction moves to like this.Direction of current in the coil 38 be chosen to make moveable magnetic armature 32 when power supply towards opening 42 upward movements.Thereby primary seal element 30 can be away from pin-and-hole 28 motions, and this makes pressure fluid to enter the cavity that magnetic armature 32 is arranged in from chamber 26, flows out in the ambient atmosphere around the side of magnetic armature 32 and towards opening 42.Below the further feature of switch portion 10 will be described in further detail.
Above-mentioned magnetic circuit is formed by the last iron frame 40a of U-shaped.Last iron frame 40a cooperates with smooth following iron frame 40b, and following iron frame 40b is square substantially, just has the otch (see figure 2) that receives flanging part 40c.Following iron frame has the central opening that receives a part of plastic bobbin 34.Moveable magnetic armature 32 projects to down in the opening in the iron frame, thereby forms complete magnetic circuit.Following iron frame 40b is designed to thicker than last iron frame 40a, so that the magnetic resistance minimum between two framework 40a, 40b and the magnetic armature 32.Central opening among the underframe 40b is circular, so that can there be uniform flux coupling between underframe 40b and the magnetic armature 32.
Because fluid rises to outlet 42 through the side of magnetic armature 32, thus the magnetic material in the switch portion should be chosen as guarantee they with will be compatible by the chemicals of switch portion 10.And described material must have enough relative permeabilities and mechanical strength and stability.Employed magnetic material is: frame section 40a, 40b, 40c are the soft iron that is coated with nickel, and armature 32 is the magnetic grade stainless steel.
The upper surface of magnetic armature 32 has central recess 43 receiving spring 44, thereby makes the gap minimum between the inside face of armature 32 and last iron frame 40a.
The design characteristics that is adopted when selecting to be used for the material of winding coil is: provide enough electromagnetic forcees to armature 32, and can be by standard alkaline type battery-operated and make battery can have enough life-spans.And winding must provide enough fast response time and size less.The scope of the design plan in the proposal is to use the line of 29 or 30 specifications, has about 150-250 circle.This provides ampere turn value between 300 and 450, less than 2 amperes maximum currents with less than the response time of 5ms.Usually use AA type battery.
As mentioned above, last iron frame 40a is combined with flow guide channel.This passage allows material top from aerosol can 14 around armature 32 to flow to overflow or passes spring 44 and pass egress hole 42.
As mentioned above, force the platform part 36 of primary seal element 30 downwardly against protuberance thereby the power of spring 44 promotes armature 32 downwards, platform part 36 is a frusto-conical.Benefit with platform part 36 of protuberance be to provide primary seal element 30 should be against the leak free small surface area.This needs less spring force, because want effective leak free area less.Have been found that be favourable against the sealing load of the primary seal of raised platform section 36 up to 13 crust.Such benefit is to have guaranteed effective seal on the whole scope of exerting pressure of various types of aerosol cans 14.And, fail-safe mechanism is provided when aerosol is overheated.For example, aerosol may explode when the pressure on the primary seal element 30 surpasses 15 crust, but this that yes in this device that exhaust is discharged overvoltage in 13 Palestine and Israels is impossible.In addition, since there is the power of required about 300 grams, realize the power that valve is opened just needs minimum.And, because utilize above-mentioned design can realize useful high sealing pressure, so the platform part 36 of protuberance makes this device can pass through powered battery.
The maximum air gap of allowing that the amount of exercise of being allowed based on maximum distortion, required compression ratio, production tolerance and the armature 32 of sealing limits is selected the thickness of major component 30.Air gap in the size at the base portion place of primary seal element 30 between 0.18mm and 0.45mm.This air gap limits the amount of travel of armature 32.Benefit with the air gap between above-mentioned size is: the fluid that allows to carry from aerosol can 14 reliably q.s, allow acceptable sealed expansion and compression property, amount of exercise enough little make described device can be by battery power supply easily and allowing according to consistent sprinkling the regularly, because little amount of travel has more manageable response time.
Inlet pin-and-hole 28 is based on following parameter designing: aerosol pressure (usually between 3 and 10 crust) and come the comparison of the required sealing force of autonomous element; The comparison of the power that must apply and consider to seal hardness based on the compression ratio and the spring 44 of packing element 30; In addition, necessary consideration tight tolerance also must be considered the comparison of the thickness of expansion (under above-mentioned chemical erosion) and primary seal element 30; At last, from the elastic force of spring 44 and the comparison of resisting the required electric power of this elastic force.
The benefit that provides monomer plastic bobbin 34 to have leak free design is because unique outlet of bobbin (is intended to the position of ejected matter) in the top or lower end (material is by the position of pin-and-hole 28).And the bobbin 34 with monomer makes that manufacturing is easier and more cheap.On the upside of plastic bobbin 34, be provided with crushable packing element, the sealing element is around the form of the ring of the top surface of bobbin 34.This crushable packing element presses the inside face on the top of iron frame 40a, to prevent from the material lateral leakage of aerosol can and to enter the zone that is positioned with coil 38.
The material that is used for bobbin 34 is POM, PA (having/no glass filling and PPS), and all these materials all obtain easily for engineering worker.The distortion that produces under the erosion of the accelerator that these materials maintenance mechanically robusts and they may be contained in aerosol can etc. within the acceptable range.Other standard comprises size and the strength stability under temperature stability, the high humidity environment and the imparting a smooth finish and the formability that are used to make pin-and-hole 28.
For primary seal element 30, used material such as buna (RTM), viton (RTM), silicon and poly-chloroprene rubber.Design standard comprises: with compatibility, hardness and the hardness change under chemical erosion of chemicals that may be by primary seal element 30, force compresses than relation, in the upperlimit deviation under the chemical erosion and fatigue characteristic under repeated stock and temperature stability.The hardness of material is chosen as the A level material of Shure scale value in 60-80 degree scope.
Fig. 6 represents according to pressurizing vessel 102 of the present invention.Pressurizing vessel 102 comprises housing 104, sleeve 106, jar 108 sum spiral pipe valve structures 110.Pressurizing vessel 102 is themes of cooresponding pending application, thereby can not be further described in this application.
The poted assemblies 112 that the present invention relates in Fig. 7 to Fig. 9, be shown specifically.Poted assemblies 112 forms interface seal between the valve rod 114 of jar 108 and solenoid valve arrangement 110, as described about previous drawings.
The cross section of first hermetic unit 116 is a rectangle, and is contained in by this way in the retaining part 119 of solenoid valve arrangement 110, that is, provide and being sealed and matched of the surface 120 of described structure.Central authorities at first hermetic unit 116 are provided with pore 122.This pore extends along the vertical length of first hermetic unit 116.Pore 122 extends in the solenoid valve arrangement 110, has omitted its full details in order to know.Yet, can be according to the usual way of solenoid valve operate solenoid valve arrangement 110 to close the passage of pore 122 tops.
The cross section of second hermetic unit 118 is circular, and is sized to fit snugly in the inboard of solenoid valve arrangement 110, as shown in Figure 7.
Between first hermetic unit 116 and second hermetic unit 118, be positioned with partition 123.Partition 123 is sized to allow first hermetic unit 116 and second hermetic unit 118 to expand.
To shown in Figure 9, partition 123, first hermetic unit 116 and second hermetic unit 118 remain on the appropriate location by covering profiled member or covering 124 as Fig. 7.Lid 124 extends along the length of poted assemblies 112 on the direction that is parallel to valve rod 114, and the top and bottom of crossing poted assemblies 112 extend internally towards pore 122.Lid 124 is welded on the poted assemblies 112, thereby provides support or rigidity for described assembly 112.
In use, valve rod 114 inserts and arrives position shown in Figure 7 in the solenoid valve arrangement 110.Cover profiled member 124 and have inwardly gradually little end, thereby make valve rod 114 enter poted assemblies 112 easily.The end wall 126 of valve rod 114 is against the surface 127 of first hermetic unit 116.Opening in the valve rod 114 is aimed at pore 122 to allow to form the path that air feed colloidal sol can flow out.Second hermetic unit 118 assembles against sidewall around the periphery of valve rod 114, thereby forms seal construction with sidewall.
When by on valve rod 114, pushing away downwards or upwards promoting jars 108 when activating jar 108, first hermetic unit 116 provides sealing force along the vertical direction shown in the arrow A on valve rod 114, and second hermetic unit 118 provides sealing force along the horizontal direction shown in the arrow B on valve rod 114.
In this structure, because described hermetic unit 116 and 118 is along the direction work that is perpendicular to one another, so provide crash-resistant sealing between valve rod 114 and solenoid valve arrangement 110.This has further advantage, that is, if a sealing member damages, another sealing member will remain under the mode of operation.
Fig. 8 shows the example of the poted assemblies 212 that has damaged.This may be owing to valve rod 214 mal-alignment in solenoid valve arrangement 210 causes.Specifically, second hermetic unit, 218 present cross sections are star as can be seen, thereby can not form the effective sealing with poted assemblies 212 and valve rod 214.Yet, because unspoiled first hermetic unit 216 keeps sealing, so prevented aerocolloidal effusion.
First hermetic unit 116,216 and/or second hermetic unit 118,218 by trade mark are
The well known materials manufacturing.Yet, it will be understood by those skilled in the art that and can use any suitable elastic body, for example silica-based and carbon based elastomeric polymers.The embodiment of typical material comprises natural rubber and neoprene, for example butyronitrile, poly-butadiene, polyisoprene, butylbenzene, styrene-isoprene copolymer, butyl rubber, acrylic rubber, silicone (specifically being organosiloxane, for example dialkyl siloxane) and such as the alkadiene of ethene-diene monomer.Other suitable material comprise cast polyurethane, ethylene propylene diene rubber (EPDM), fluorosilicone, carbon fluorine/fluorosilicone compound, high saturated nitriles, alcohol, poly-chloroprene rubber, nitrile (buna-N), polyacrylates, polyurethane, SBR (buna-S), silicone, thiokol,
With
Used material allows described sealed expansion to the structure that requires or distortion and can form and be sealed and matched, and the longer life-span is provided simultaneously.Described material is particularly suitable for using with the chemicals as air freshener.
The size of first hermetic unit 116 and second hermetic unit 118 is decided to be the valve rod 114 that holds variable-diameter.The most frequently used stem diameter is between 2.8mm and 4.0mm.Yet the skilled reader will appreciate that and the invention is not restricted to use the valve rod with these diameters.
Together with primary seal element 32 O shape ring (118,218,318) sealing member is set, face seal (116,216,316) provides three sealing members of jar till solenoid switch is opened that are used for material is remained on container.End by face seal 116,216,316 blanket gas aerosol valve stem 114 is favourable sealing.The favourable part of this feature is, prevents that by face seal material from flowing out from aerosol can, and prevents that by primary seal element flow of material from crossing screw actuator.Other advantage is that described sealing member is positioned at the aerosol can outside because different with inner aerosol can sealing member.Therefore, no matter the sealing how sealing in the aerosol can realize ideal by said modules.Since the basic standardization of aerosol bar characteristic, therefore compare with other parts of aerosol can, the sealing of bar also is useful.
The reader please refer to this specification sheets simultaneously or relevant and all papers and the document that can inspect this specification sheets for the public before it, submitted to the application, this paper is incorporated into this with the content of all these papers and document by reference.
Disclosed all features in this specification sheets (comprising any claims, summary and accompanying drawing), and/or disclosed any method or processing in steps can be combined in the combination in any mode (except at least some such features and/or step are mutually exclusive combination).
Unless offer some clarification in addition, disclosed each feature can be with reaching identical, being equal to or the replaceable feature of similar purpose replaces in this specification sheets (comprising any claims, summary and accompanying drawing).Therefore, unless offer some clarification in addition, disclosed each feature all just is equal to or an embodiment of the homologous series of similar characteristics.
The invention is not restricted to the details of aforementioned embodiments.The present invention prolong and in this specification sheets (comprising any claims, summary and accompanying drawing) any novel feature or any novel combination of disclosed feature, perhaps prolong and to any novel step or any novel combination of the step of disclosed any method or processing.
Claims (15)
1. poted assemblies that is used for pressurizing vessel, the sealing assembly comprises first hermetic unit and second hermetic unit, wherein said first hermetic unit is suitable for forming sealing member with the end face of the efferent of described pressurizing vessel, second hermetic unit is suitable for forming sealing member with the sidewall of described efferent, and wherein said two sealing members provide the redundancy on the sealing function.
2. poted assemblies as claimed in claim 1, wherein, described end face and described sidewall roughly are perpendicular to one another.
3. poted assemblies as claimed in claim 1 or 2, wherein, described first hermetic unit and described second hermetic unit are made for monomer members.
4. poted assemblies as claimed in claim 1, wherein, described first hermetic unit comprises smooth packing ring.
5. poted assemblies as claimed in claim 1, wherein, described second hermetic unit comprises O-ring packing.
6. poted assemblies as claimed in claim 1, wherein, the size of described first hermetic unit is decided to be holds the valve rod of diameter between 0.1 to 10mm.
7. poted assemblies as claimed in claim 6, wherein, the size of described second hermetic unit is decided to be holds the valve rod of diameter between 0.1 to 10mm.
8. as claim 6 or 7 described poted assemblives, wherein, the size of described first hermetic unit or described second hermetic unit be decided to be hold diameter 2.8 and 4.0mm between valve rod.
9. poted assemblies as claimed in claim 1 wherein, is provided with partition between described first hermetic unit and described second hermetic unit.
10. poted assemblies as claimed in claim 1, wherein, described first hermetic unit leads to solenoid valve.
11. poted assemblies as claimed in claim 1, wherein, described first sealing member and described second sealing member are member separately.
12. poted assemblies as claimed in claim 1, wherein, described first sealing member and described second sealing member are suitable for sealing the parts that separate of described efferent.
13. poted assemblies as claimed in claim 1, wherein, described first sealing member is suitable for slight deformation, forms depression therein to allow described efferent.
14. poted assemblies as claimed in claim 1, wherein, the end face of described first sealing member and described efferent is suitable in use roughly coplanar aligned.
15. pressurizing vessel, this pressurizing vessel comprises housing, has the aerosol can and the valve arrangement of valve rod, poted assemblies wherein is set between described valve rod and described valve arrangement, to form sealing member, the sealing assembly comprises first hermetic unit and second hermetic unit, described first hermetic unit is suitable for forming sealing member with the efferent of described pressurizing vessel and the end face of described efferent, described second hermetic unit is suitable for forming sealing member with the sidewall of described efferent, and wherein said two sealing members provide the redundancy on the sealing function.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0503042A GB0503042D0 (en) | 2005-02-15 | 2005-02-15 | A seal assembly |
| GB0503042.4 | 2005-02-15 | ||
| GB0521071A GB0521071D0 (en) | 2005-02-15 | 2005-10-18 | A seal assembly |
| GB0521071.1 | 2005-10-18 | ||
| PCT/GB2006/000348 WO2006087516A1 (en) | 2005-02-15 | 2006-02-02 | Seal assembly for a pressurised container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101119910A CN101119910A (en) | 2008-02-06 |
| CN101119910B true CN101119910B (en) | 2010-04-07 |
Family
ID=34385447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680004968.5A Active CN101119910B (en) | 2005-02-15 | 2006-02-02 | Seal assembly for a pressurised container |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101119910B (en) |
| GB (2) | GB0503042D0 (en) |
| HK (1) | HK1116457A1 (en) |
| ZA (1) | ZA200705849B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477196B (en) * | 2017-09-29 | 2023-08-01 | 杭州屹石科技有限公司 | Interlocking gas-liquid electric control valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3250444A (en) * | 1964-09-10 | 1966-05-10 | Seary Ltd | Metering button valve construction |
| US5025962A (en) * | 1990-01-12 | 1991-06-25 | Robert J. Leblanc | Automatic timed release spray dispenser |
-
2005
- 2005-02-15 GB GB0503042A patent/GB0503042D0/en not_active Ceased
- 2005-10-18 GB GB0521071A patent/GB0521071D0/en not_active Ceased
-
2006
- 2006-02-02 CN CN200680004968.5A patent/CN101119910B/en active Active
-
2007
- 2007-07-13 ZA ZA200705849A patent/ZA200705849B/en unknown
-
2008
- 2008-06-23 HK HK08106967.8A patent/HK1116457A1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3250444A (en) * | 1964-09-10 | 1966-05-10 | Seary Ltd | Metering button valve construction |
| US5025962A (en) * | 1990-01-12 | 1991-06-25 | Robert J. Leblanc | Automatic timed release spray dispenser |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0521071D0 (en) | 2005-11-23 |
| CN101119910A (en) | 2008-02-06 |
| ZA200705849B (en) | 2008-07-30 |
| GB0503042D0 (en) | 2005-03-23 |
| HK1116457A1 (en) | 2008-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2597811C (en) | Seal assembly for a pressurised container | |
| CN101287660B (en) | Spraying device | |
| AU2006303094B2 (en) | Spraying device | |
| CA2625377C (en) | Spraying device | |
| CN101119910B (en) | Seal assembly for a pressurised container | |
| MX2008005080A (en) | Spraying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1116457 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1116457 Country of ref document: HK |