CN115325224A - Bidirectional ventilation isolation valve - Google Patents
Bidirectional ventilation isolation valve Download PDFInfo
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- CN115325224A CN115325224A CN202210845272.6A CN202210845272A CN115325224A CN 115325224 A CN115325224 A CN 115325224A CN 202210845272 A CN202210845272 A CN 202210845272A CN 115325224 A CN115325224 A CN 115325224A
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- Prior art keywords
- sleeve
- end plate
- guide rod
- piston
- piston assembly
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a bidirectional ventilation isolation valve which comprises a support, a sleeve, a piston assembly and an elastic valve core, wherein the support is fixedly connected with the sleeve; the sleeve is sleeved on one side of the support, and a first vent hole is formed in the end face, far away from the support, of the sleeve; the piston assembly is matched in the bracket and the sleeve and can move back and forth along the axial direction of the sleeve; a central channel is arranged in the piston assembly, and a second vent hole is formed in the end face, far away from the sleeve, of the piston assembly; the elastic valve core is transversely arranged in one end of the central channel positioned in the sleeve to separate the central channel from the first vent hole; the elastic valve core is provided with a cut line opening which can be opened and closed. The bidirectional ventilation isolation valve realizes the function of releasing the burst pressure by the cooperation of the elastic valve core, the piston assembly and the like, and simultaneously meets the function of balancing the internal pressure and the external pressure; the arrangement of the openable tangent line port on the elastic valve core can realize the isolation of the inside and outside air after balancing the inside and outside pressure difference, thereby playing the effective moisture-blocking function.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a bidirectional air-permeable isolating valve.
Background
The existing bidirectional air-permeable isolating valve has the advantages that the valve core part is not provided with a sealing device, the valve core part is difficult to seal after being opened and closed, and the complete separation effect of internal air and external air cannot be achieved after the internal pressure and the external pressure in a cavity are balanced. Under the pressure balance state, the gas of inner and outer cavity can communicate, and the valve core part can not play the cavity and hinder wet function.
Therefore, based on the inherent drawbacks and deficiencies of the existing bi-directional gas-permeable isolation valve structure, it is necessary to improve the bi-directional gas-permeable isolation valve to solve the above drawbacks and deficiencies.
Disclosure of Invention
The invention aims to provide an improved bidirectional air-permeable isolating valve.
The technical scheme adopted by the invention for solving the technical problem is as follows: the bidirectional ventilation isolation valve comprises a bracket, a sleeve, a piston assembly and an elastic valve core;
the sleeve is sleeved on one open side of the support, and the end face, far away from the support, of the sleeve is provided with a first vent hole; the piston assembly is matched in the bracket and the sleeve and can move back and forth along the axial direction of the sleeve to open and close the other open side of the bracket; a central channel is arranged in the piston assembly, and a second vent hole is formed in the end face, far away from the sleeve, of the piston assembly; the first vent hole, the central channel and the second vent hole are communicated in sequence;
the elastic valve core is transversely arranged in one end of the central channel positioned in the sleeve to separate the central channel from the first vent hole; and the elastic valve core is provided with a cut line opening which can be opened and closed.
Preferably, the piston assembly comprises a guide rod movably arranged in the sleeve, a piston end plate fixed on the guide rod and movably matched on the bracket, and a gas-permeable membrane;
the second vent hole is formed in the piston end plate, and the air permeable membrane is arranged on one side, facing the guide rod, of the piston end plate and covers the second vent hole; the central channel penetrates through the guide rod.
Preferably, the piston end plate comprises an end plate body, a surrounding wall convexly disposed on a first surface of the end plate body;
the surrounding wall defines a positioning groove on the first surface of the end plate body, and the air-permeable membrane is matched in the positioning groove; the second vent hole is formed in the end plate body and located in the area where the positioning groove is located.
Preferably, the piston assembly further comprises a cover plate fitted on a second surface of the end plate body facing away from the surrounding wall;
the second surface of the end plate body is provided with at least one protruding part, the protruding part is located on the periphery of the area where the second vent hole is located, and the cover plate is supported above the second vent hole.
Preferably, the piston assembly further comprises a support; the support piece is matched between the piston end plate and the guide rod, and the air permeable membrane is positioned between the piston end plate and the support piece.
Preferably, the piston assembly further comprises a return elastic member;
the reset elastic piece is sleeved on the periphery of the guide rod, one end of the reset elastic piece is fixed on the periphery of one end, far away from the piston end plate, of the guide rod, and the other end of the reset elastic piece is abutted to the support.
Preferably, the piston assembly further comprises a hollow end cap; the end cover is matched with one end, far away from the piston end plate, of the guide rod, and the elastic valve core is abutted against the guide rod.
Preferably, the bracket comprises an annular frame body, an inner ring body arranged in the frame body, at least one connecting rod connected between the inner ring body and the frame body, and at least one connecting lug protruding out of the periphery of the frame body;
the piston end plate is supported above the inner ring body and the connecting rod in a matched mode; one end of the guide rod penetrates into the inner ring body and is connected with the piston end plate; the open side of the sleeve is sleeved on the periphery of the inner ring body.
Preferably, the elastic valve core comprises an elastic sheet arranged corresponding to the central channel and an annular wall connected to the periphery of the elastic sheet; the elastic sheet is radially blocked in the central channel; the thread cutting opening is arranged on the elastic sheet.
Preferably, the elastic sheet is provided with at least one annular protrusion.
The invention has the beneficial effects that: the releasing function of the applied blasting pressure is realized through the matching of the elastic valve core, the piston assembly and the like, and the function of balancing the internal pressure and the external pressure is also met; the arrangement of the openable tangent port on the elastic valve core can realize the isolation of the air inside and outside after balancing the pressure difference between the inside and the outside, thereby playing an effective moisture-resisting function.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is an exploded view of a bi-directional gas permeable isolation valve according to one embodiment of the present invention;
FIG. 2 is a schematic view of a fitting structure of a piston end plate and a gas permeable membrane in the bidirectional gas-permeable isolation valve according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an elastic valve core in the bidirectional gas-permeable isolating valve according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a bi-directional gas-permeable isolation valve of an embodiment of the present invention in one state;
FIG. 5 is a schematic cross-sectional view of a two-way venting isolation valve of an embodiment of the present invention in another state;
FIG. 6 is a schematic cross-sectional view of a two-way venting isolation valve in accordance with another embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 4 and 5, the bidirectional isolation valve according to an embodiment of the present invention may include a support 10, a sleeve 20, a piston assembly and a resilient valve element 30.
The sleeve 20 is sleeved on an open side of the support 10, and an end face of the sleeve 20 away from the support 10 is provided with a first vent hole 101. The piston assembly is fitted in the holder 10 and the sleeve 20 and can move back and forth along the axial direction of the sleeve 20 to open and close the other open side of the holder 10. A central channel 100 is arranged in the piston assembly, and a second vent hole 102 is arranged on the end surface of the piston assembly, which is far away from the sleeve 20; the first ventilation hole 101, the central passage 100 and the second ventilation hole 102 are in communication in this order. The elastic valve core 30 is transversely arranged in one end of the central passage 100 positioned in the sleeve 20 and used for isolating the central passage 100 from the first vent hole 101; further, the elastic valve body 30 is provided with an openable/closable slit 300.
The two-way air-permeable isolation valve of the invention is communicated with the chamber of the installed equipment through the first vent hole 101 and is used for balancing the pressure difference inside and outside the chamber. When pressure difference is generated between the inside and the outside of the chamber, the gas rushes open the tangent opening 300 on the elastic valve core 30 by the force of the gas, thereby realizing the balance of the inside pressure and the outside pressure. When the pressure inside and outside the chamber is balanced, the tangent port 300 on the elastic valve core 30 is reset and closed to isolate the air inside and outside.
Specifically, the support 10 and the sleeve 20 cooperate to form a housing structure of the entire two-way gas-permeable isolation valve, and the piston assembly, the elastic valve core 30 and the like are arranged in the housing structure.
As shown in fig. 1, the bracket 10 may include a ring-shaped frame 11, an inner ring 12 disposed inside the frame 11, at least one connecting rod 13 connected between the inner ring 12 and the frame 11, and at least one connecting lug 14 protruding from the outer periphery of the frame 11. The frame 11 may be, but is not limited to, a circular frame as shown in fig. 1, and two opposite sides thereof respectively form two opposite open sides of the stent 10. The inner ring 12 is fixed in the housing 11 by the connecting rod 13, and maintains the flow-through property of the housing 11 without blocking the inside of the housing 11. Lugs 14 are provided on the periphery of the housing for connecting the bracket 10 to the device to which the valve is to be attached.
The sleeve 20 has a cylindrical structure with one side open and one side closed, and the first ventilation hole 101 is provided in a closed side end surface of the sleeve 20. The sleeve 20 is fitted around the outer periphery of the inner ring 12 at its open side so that the inner space of the sleeve 20 can communicate with the inner peripheral space of the inner ring 12.
A sealing ring 15 is further disposed on one side of the frame 11 facing the sleeve 20, and is used for abutting against between the support 10 and a bearing surface of the installed device, so as to seal a gap between the two-way gas-permeable isolation valve and the bearing surface.
The piston assembly may include a guide rod 21, a piston end plate 22, a gas permeable membrane 23, a support 24, a return spring 25, an end cap 26, and a cover plate 27.
The guide rod 21 is movably arranged in the sleeve 20, and the piston end plate 22 is movably matched on the bracket 10 and fixed on the guide rod 21 and is fixed relative to the guide rod 21. The second vent hole 102 is provided in the piston end plate 22, and the central passage 100 is penetratingly provided in the guide rod 21. The air-permeable membrane 23 is provided on the side of the piston end plate 22 facing the guide rod 21 and covers the second air-permeable hole 102.
In combination with the structural composition of the stent 10, the piston end plate 22 is supported above the inner ring 12 and the connecting rod 13 of the stent 10, and can close or open an open side of the stent 10. One end of the guide rod 21 penetrates into the inner ring body 12 and is connected with the piston end plate 22.
As shown in fig. 1-2, the piston end plate 22 further may include an end plate body 221, and a surrounding wall 222 protrudingly provided on the end plate body 221. The endplate body 221 has a first surface and a second surface opposite to the first surface, the surrounding wall 222 protrudes from the first surface of the endplate body 221, a positioning groove 220 is defined on the first surface of the endplate body 221, and the air permeable membrane 23 is fitted in the positioning groove 220; the second vent hole 102 is disposed on the end plate body 221 and located in the area of the positioning groove 220, so that the gas can be discharged from the second vent hole 102 after passing through the gas permeable membrane 23, or can enter from the second vent hole 102 and pass through the gas permeable membrane 23 to enter the central channel 100.
In the holder 10, the end plate body 221 can abut on the end face of the housing 11, and the surrounding wall 222 can abut on the connecting rod 23. In order to improve the fitting sealing property, a seal ring 110 for sealing a gap between the end face of the frame 11 and the end plate body 221 is provided on the end face of the frame 11.
Support 24 fits between piston end plate 22 and guide rod 21, and gas permeable membrane 23 is located between piston end plate 22 and support 24. Wherein, the supporting member 24 may include a supporting plate 241 and a column 242 connected together; the supporting plate 241 can be fitted in the positioning groove 220, thus also confining the air permeable membrane 23 in the positioning groove 220; the column 242 of the support 24 is tightly fitted in the guide rod 21, and the support 24 is provided with a passage hole 240 penetrating through the support plate 241 and the column 242, and the passage hole 240 communicates the gas permeable membrane 23 with the central passage 100.
Through the arrangement of the supporting piece 24, the air permeable membrane 23 is limited in the positioning groove 220, and the piston end plate 22 is fixed on the guide rod 21.
The elastic restoring element 25 is sleeved on the periphery of the guide rod 21, one end of the elastic restoring element is fixed on the periphery of the end of the guide rod 21 far away from the piston end plate 22, and the other end of the elastic restoring element is abutted to the bracket 10. When the piston assembly is moved by the gas pressure toward the outside of the bracket 10 with respect to the sleeve 20 and the bracket 10, the return elastic member 25 is compressed; when the gas pressure disappears or can overcome the gas pressure, the reset elastic piece 25 extends and restores to drive the piston assembly to move towards the inner side of the sleeve 20 relative to the sleeve 20 and the support 10 until the piston assembly is in place.
In a preferred embodiment, the return elastic member 25 is implemented by a spring.
The end cap 26 is fitted to the end of the guide rod 21 remote from the end plate 22 of the piston to hold the resilient valve element 30 tightly in the guide rod 21. The end cap 26 is provided with a through hole so that it forms a hollow end cap without affecting the communication between the central passage 100 and the first ventilation hole 101 in the sleeve 20.
The end cap 26 and the guide rod 21 can be connected into a whole through a snap or a thread mode. Depending on the mating position of the end cap 26 on the end of the guide rod 21, a snap or thread is provided at the mating position of the two. In the present embodiment, referring to fig. 4 and 5, the end cap 26 is fitted into the end portion of the guide rod 21, and a snap or screw is provided on the outer peripheral surface of the end cap 26 and the inner peripheral surface of the end portion of the guide rod 21.
The cover plate 27 is fitted on the surface of the piston end plate 22 facing away from the guide rod 21 and can be fitted with the inner periphery of the frame 11 of the bracket 10, thereby forming an outer cover plate of the whole isolation valve and playing a role of beauty.
Specifically, the cover plate 27 is fitted on a second surface of the end plate body 221 of the piston end plate 22 facing away from the surrounding wall 222. In order to prevent the cover plate 23 from closing the second ventilation hole 102 of the piston end plate 22, the second surface of the end plate body 221 is provided with at least one protrusion 223, and the protrusion 223 is located at the periphery of the area where the second ventilation hole 102 is located, so as to support the cover plate 27 above the second ventilation hole 102. With the arrangement of the plurality of projections 223, the plurality of projections 223 are spaced apart on the second surface such that the spaces between the projections 223 form communication passages that communicate the outside and the second ventilation holes 102.
In this embodiment, as shown in fig. 2, the protruding portion 223 is an arc-shaped strip corresponding to the circumferential direction of the end plate body 221, a plurality of arc-shaped strips are arranged in parallel at intervals to form a group, and the interval between two adjacent groups of arc-shaped strips forms a communication channel.
The spring spool 30 is disposed within the central passage 100, and in particular within an end of the guide rod 21 facing the first vent hole 101. The slit 300 of the elastic valve core 30 can be opened and closed under air pressure.
The elastic valve core 30 is preferably made of a silicone material and has elasticity.
Referring to fig. 1 and 3, the resilient valve core 30 may further include a resilient plate 31 disposed corresponding to the central passage 100, and an annular wall 32 connected to an outer periphery of the resilient plate 31.
The annular wall 32 is tightly matched with the inner peripheral wall surface of the central channel 100 (namely the inner peripheral wall surface of the guide rod 21), and the elastic sheet 31 is radially blocked in the central channel 100; the slit 300 is provided on the elastic sheet 31. The slit 300 is formed in the elastic sheet 31 by a cutting method, and is in a linear shape, for example, a cross shape, a Y shape, an X shape, or the like, without cutting a part of the elastic sheet 31 to form an opening. Under gas pressure, the tangential port 300 may deform to form an opening communicating the central passage 100 and the first vent hole 101.
Specifically, the elastic valve core 30 may be sleeved on the end cap 26, and the elastic sheet 31 thereof is correspondingly fitted on the end face of the end cap, and the annular wall 32 is correspondingly fitted on the outer peripheral surface of the end cap 26 and is abutted between the outer peripheral surface of the end cap 26 and the inner peripheral wall surface of the guide rod 21.
The elastic sheet 31 is preferably in the form of an arc-shaped bulge, which is directed towards the inside of the central passage 100, mainly for achieving an intake pressure difference on opposite sides, such as: when the air pressure at the side of the first ventilation hole 101 reaches a corresponding set value, the elastic sheet 31 is broken by the air, and the exhaust function is realized. When negative pressure is generated at the side of the first vent hole 101, the elastic sheet 31 is broken by the influence of the external air pressure when the external pressure reaches a corresponding set value, thereby realizing the function of balancing the internal and external pressure difference.
The elastic sheet 31 is provided with at least one annular protrusion 33, and the annular protrusion 33 is located at the periphery of the tangential opening 300.
The elastic valve core 30 can be made of elastic materials such as silica gel and rubber.
As shown in fig. 6, the bidirectional isolation valve according to another embodiment of the present invention includes a support 10, a sleeve 20, a piston assembly, and a resilient valve element 30. The cooperation among the bracket 10, the sleeve 20, the piston assembly and the resilient valve core 30 can refer to the above embodiments, and will not be described herein.
The piston assembly further comprises a guide rod 21, a piston end plate 22, a gas-permeable membrane 23, a return elastic member 25, an end cap 26 and a cover plate 27. The guide rod 21 is movably arranged in the sleeve 20, and the piston end plate 22 is movably matched on the bracket 10 and fixed on the guide rod 21 and is fixed relative to the guide rod 21. A gas permeable membrane 23 is provided on the side of the piston end plate 22 facing the guide rod 21. The elastic restoring element 25 is sleeved on the periphery of the guide rod 21, one end of the elastic restoring element is fixed on the periphery of the end of the guide rod 21 far away from the piston end plate 22, and the other end of the elastic restoring element is abutted to the bracket 10. The end cap 26 is fitted to the end of the guide rod 21 remote from the end plate 22 of the piston to hold the resilient valve element 30 tightly in the guide rod 21. A cover plate 27 is fitted on the surface of the piston end plate 22 facing away from the guide rod 21 and can be fitted to the inner periphery of the holder 10.
The present embodiment is different from the above embodiments in that: guide rod 21 includes a positioning plate 211 and a guide rod body 212 connected together, and central passage 100 extends through positioning plate 211 and guide rod body 212. The positioning plate 211 is fitted in the positioning groove 220 of the piston end plate 22 for accommodating the gas permeable membrane 23, so that the gas permeable membrane 23 is also limited in the positioning groove 220; the guide body 212 passes out of the holder 10 and fits axially within the sleeve 20.
Compared with the above embodiments, the present embodiment omits the arrangement of the supporting member 24, or the supporting member 24 and the guide bar 21 can be integrally formed, so that compared with the arrangement of the supporting member 24 and the guide bar 21, the present embodiment reduces the number of structural components, simplifies the assembly process, and reduces the cost.
In addition, in the present embodiment, the end cap 26 is fitted on the end portion of the guide bar 21, and the connection between the inner circumferential surface of the end cap 26 and the outer circumferential surface of the end portion of the guide bar 21 may be achieved by a snap or a screw. The spring spool 30 may be positioned on the end face of the end cap 36 facing the guide rod 21 and may be captured between the end cap 26 and the end of the guide rod 21.
When the bidirectional air-permeable isolating valve is installed on equipment for use:
referring to fig. 1 and 4, when gas generated inside the chamber of the apparatus needs to be released and does not reach the burst pressure, the gas enters the bidirectional gas-permeable isolation valve from the first vent hole 101, passes through the tangent port 300 of the elastic valve core 30, and then is discharged to the outside through the central passage 100, the gas-permeable membrane 23, the second vent hole 102, the gap between the piston end plate 22 and the cover plate 27, and the gap between the piston end plate 22 and the support 10 in sequence along the solid arrows in fig. 4. After the pressures inside and outside the chamber are equalized, the tangential port 300 of the elastomeric valve spool 30 is closed.
Referring to fig. 1 and 4, when negative pressure is generated inside the chamber of the apparatus, it is necessary to balance internal and external pressures, and external gas enters the bidirectional gas-permeable isolation valve through the second gas vent 102, passes through the gas permeable membrane 23, the central passage 100, the tangent port 300 of the elastic valve element 30, and the first gas vent 101 in sequence along the dotted arrow in fig. 4, and then enters the chamber. After the pressure inside and outside the chamber is equalized, the tangential port 300 of the elastomeric valve cartridge 30 is closed.
Referring to fig. 1 and 5, when the gas inside the chamber of the apparatus reaches the burst pressure value, the gas pressure drives the piston assembly to move outward relative to the sleeve 20 and the bracket 10, compressing the return elastic member 25, and opening the bidirectional gas-permeable isolation valve. As shown by the arrows in fig. 5, the chamber interior gas can enter the central passage 100 from the first ventilation hole 101, and can be discharged to the outside through the gas permeable membrane 23 and the second ventilation hole 102 in this order; the chamber gas also enters through one open side of the stent 10 and exits the outside through the other open side of the stent 10. Through the two gas discharge passages, the pressure of the cavity is released, and the explosion-proof function is realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A bidirectional ventilation isolation valve is characterized by comprising a bracket, a sleeve, a piston assembly and an elastic valve core;
the sleeve is sleeved on one open side of the support, and the end face, far away from the support, of the sleeve is provided with a first vent hole; the piston assembly is matched in the bracket and the sleeve and can move back and forth along the axial direction of the sleeve to open and close the other open side of the bracket; a central channel is arranged in the piston assembly, and a second vent hole is formed in the end face, far away from the sleeve, of the piston assembly; the first vent hole, the central channel and the second vent hole are communicated in sequence;
the elastic valve core is transversely arranged in one end of the central channel positioned in the sleeve to separate the central channel from the first vent hole; and the elastic valve core is provided with a cut line opening which can be opened and closed.
2. The bidirectional gas-permeable isolating valve according to claim 1, wherein the piston assembly comprises a guide rod movably arranged in the sleeve, a piston end plate fixed on the guide rod and movably matched on the bracket, and a gas-permeable membrane;
the second vent hole is formed in the piston end plate, and the air permeable membrane is arranged on one side, facing the guide rod, of the piston end plate and covers the second vent hole; the central channel is arranged in the guide rod in a penetrating mode.
3. The bi-directional venting isolation valve of claim 2 wherein said piston endplate comprises an endplate body, a surrounding wall convexly disposed on a first surface of said endplate body;
the surrounding wall defines a positioning groove on the first surface of the end plate body, and the air-permeable membrane is matched in the positioning groove; the second vent hole is formed in the end plate body and located in the area where the positioning groove is located.
4. The bi-directional gas permeable isolation valve of claim 3, wherein the piston assembly further comprises a cover plate fitted on a second surface of the end plate body facing away from the enclosure wall;
the second surface of the end plate body is provided with at least one protruding part, the protruding part is located on the periphery of the area where the second ventilation hole is located, and the cover plate is supported above the second ventilation hole.
5. The bi-directional gas permeable isolation valve of claim 2, wherein the piston assembly further comprises a support; the support piece is matched between the piston end plate and the guide rod, and the air-permeable membrane is positioned between the piston end plate and the support piece.
6. The bi-directional gas permeable isolation valve of claim 2, wherein the piston assembly further comprises a return spring;
the reset elastic piece is sleeved on the periphery of the guide rod, one end of the reset elastic piece is fixed on the periphery of one end, far away from the piston end plate, of the guide rod, and the other end of the reset elastic piece is abutted to the support.
7. The bi-directional venting isolation valve of claim 2 wherein said piston assembly further comprises a hollow end cap; the end cover is matched with one end, far away from the piston end plate, of the guide rod, and the elastic valve core is abutted against the guide rod.
8. The bi-directional gas-permeable isolation valve according to claim 2, wherein the bracket comprises a ring-shaped frame body, an inner ring body arranged in the frame body, at least one connecting rod connected between the inner ring body and the frame body, and at least one connecting lug protruding out of the periphery of the frame body;
the piston end plate is supported above the inner ring and the connecting rod in a matched mode; one end of the guide rod penetrates into the inner ring body and is connected with the piston end plate; the open side of the sleeve is sleeved on the periphery of the inner ring body.
9. The bi-directional gas-permeable isolation valve according to any one of claims 1 to 8, wherein the elastic valve core comprises an elastic sheet arranged corresponding to the central channel, and an annular wall connected to the periphery of the elastic sheet;
the elastic sheet is radially blocked in the central channel; the thread cutting opening is arranged on the elastic sheet.
10. The bi-directional venting isolation valve of claim 9 wherein said elastomeric sheet has at least one annular protrusion formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210845272.6A CN115325224A (en) | 2022-07-19 | 2022-07-19 | Bidirectional ventilation isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210845272.6A CN115325224A (en) | 2022-07-19 | 2022-07-19 | Bidirectional ventilation isolation valve |
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| Publication Number | Publication Date |
|---|---|
| CN115325224A true CN115325224A (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210845272.6A Pending CN115325224A (en) | 2022-07-19 | 2022-07-19 | Bidirectional ventilation isolation valve |
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| CN (1) | CN115325224A (en) |
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| CN201396496Y (en) * | 2009-03-27 | 2010-02-03 | 刘景福 | Multi-purpose cap-shaped valve breather valve |
| CA2694583A1 (en) * | 2010-03-02 | 2011-09-02 | Globe Union Industrial Corp. | Pressure balance valve |
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| CN112361047A (en) * | 2021-01-12 | 2021-02-12 | 江苏时代新能源科技有限公司 | Bidirectional breather valve, battery and device |
| JP3232945U (en) * | 2021-03-10 | 2021-07-15 | 東莞蒲微防水透気膜材料有限公司Ｄｏｎｇｇｕａｎ Ｐｕｗｅｉ Ｗａｔｅｒｐｒｏｏｆ ａｎｄ Ｂｒｅａｔｈａｂｌｅ Ｍｅｍｂｒａｎｅ Ｍａｔｅｒｉａｌ Ｃｏ．， Ｌｔｄ． | Explosion-proof valve core, explosion-proof valve, box airtightness inspection jig |
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