Waterproof, dustproof, breathable and explosion-proof valve

Abstract

The utility model provides a waterproof, dustproof, breathable and explosion-proof valve, which relates to the technical field of explosion-proof valves and comprises a cover plate component, a main body and a valve core. The cover plate assembly comprises a waterproof breathable film, the main body comprises an inner-layer cylindrical shell and an outer-layer cylindrical shell, an interlayer is arranged between the inner-layer cylindrical shell and the outer-layer cylindrical shell, the main body comprises a first end and a second end, the first end is closed, the second end is open, the first end is provided with a ventilation column, the ventilation column is provided with a first through hole, and the first through hole is communicated with the interlayer; the cover plate assembly covers the first end, and the second end is used for being connected with equipment. The valve element is movably connected with the inner layer cylindrical shell, and the valve element is connected with the cover plate assembly through a spring. The waterproof breathable film is arranged on the cover plate assembly, efficient ventilation of equipment in the normal working state is achieved, the pressure difference between the interior and the exterior of the equipment can be balanced in time, and when the internal pressure of the equipment is abnormally increased, the valve element is opened under the action of the pressure, so that the internal pressure of the equipment is rapidly released.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof valves, in particular to a waterproof, dust-proof and breathable explosion-proof valve. Background Art

[0002] With the continuous development of application fields such as battery packs and energy storage devices, the requirements for the safety and reliability of equipment are increasing day by day. In order to prevent the equipment from exploding due to excessive pressure caused by abnormal conditions inside, an explosion-proof valve is usually set on the equipment. At the same time, in order to ensure the normal operation of the equipment, it is also necessary to carry out waterproof, breathable and moisture-proof treatment on the equipment.

[0003] The explosion-proof valves in the prior art mainly include two types: needle-piercing type and spring-mechanical type. The needle-piercing type explosion-proof valve relieves pressure by piercing a waterproof and breathable membrane. This scheme has a simple structure and is a disposable product that cannot be reused, and dust and water vapor may enter the equipment interior after piercing.

[0004] The spring-mechanical type explosion-proof valve uses a spring and a mechanical structure to achieve opening and closing. However, the existing spring-mechanical type explosion-proof valve has a small air permeability and cannot meet the requirement of quickly balancing the air pressure between the interior of the equipment and the outside during normal operation, which easily causes the spring to open frequently and dust to easily enter the equipment interior.

[0005] Therefore, it is necessary to improve the existing explosion-proof valve to overcome the defects of the prior art. Summary of the Utility Model

[0006] To overcome the problems existing in the related art, the purpose of the utility model is to provide a waterproof, dust-proof and breathable explosion-proof valve to solve the problem of small air permeability in the prior art under normal working conditions.

[0007] A waterproof, dust-proof and breathable explosion-proof valve, comprising:

[0008] A cover plate assembly, the cover plate assembly includes a waterproof and breathable membrane;

[0009] A main body, the main body includes an inner columnar shell and an outer columnar shell, there is a sandwich layer between the inner columnar shell and the outer columnar shell, the main body includes a first end and a second end, the first end is closed, the second end is open, a ventilation column is provided on the first end, a first through hole is provided on the ventilation column, the first through hole communicates with the sandwich layer, the cover plate assembly is covered on the first end, and the second end is used for connecting with the equipment;

[0010] A valve core, the valve core is movably connected to the inner columnar shell, and the valve core is connected to the cover plate assembly through a spring.

[0011] Under normal circumstances, the explosion-proof valve exchanges air with the inside of the device through the waterproof and breathable membrane on the cover assembly and the first through-hole on the ventilation column. When the pressure inside the device increases abnormally, the valve core is pushed towards the cover assembly by the air pressure, enabling the device to exhaust pressure directly to the outside through the exhaust window of the valve core, thus avoiding the risk of explosion caused by excessive pressure inside the device.

[0012] In some embodiments, a first sealing ring is fixedly connected to the edge of the waterproof and breathable membrane.

[0013] The first sealing ring fixedly connected to the edge of the waterproof and breathable membrane effectively isolates external dust and water vapor from entering the device through the gap between the cover assembly and the connecting seat, further improving the waterproof and dustproof performance of the explosion-proof valve and ensuring the cleanliness of the internal environment of the device.

[0014] In some embodiments, the cover assembly further includes a first cover plate and a second cover plate arranged oppositely, the waterproof and breathable membrane is disposed between the first cover plate and the second cover plate, a first ventilation hole is provided on the first cover plate, and a second ventilation hole corresponding to the ventilation column is provided on the second cover plate.

[0015] The use of the oppositely arranged first cover plate and second cover plate to form a closed cavity can not only protect the waterproof and breathable membrane from direct damage by the external environment, but also allow air to enter through the first ventilation hole, pass through the waterproof and breathable membrane for filtration, and then enter through the ventilation column corresponding to the second ventilation hole, improving the ventilation efficiency of the explosion-proof valve and more effectively blocking dust and water vapor from entering the device, thereby better protecting the device and improving its stability and service life.

[0016] In some embodiments, the cover assembly further includes a support net, and the support net is disposed close to the waterproof and breathable membrane.

[0017] Disposing the support net close to the waterproof and breathable membrane in the cover assembly can effectively disperse external pressure and impact force, prevent the waterproof and breathable membrane from being damaged due to uneven stress or excessive deformation, and improve its service life and reliability.

[0018] In some embodiments, an exhaust enclosure is further provided on the first end, an exhaust groove is provided on the exhaust enclosure, and a protrusion is provided on the edge of the exhaust enclosure, and the protrusion is arranged corresponding to the edge of the cover assembly.

[0019] The protrusion design on the edge of the exhaust enclosure limits and fixes the cover assembly within a specific area, enhancing the connection stability between the cover assembly and the connecting seat. At the same time, the exhaust enclosure can also block larger solid objects, effectively preventing foreign objects from entering the explosion-proof valve.

[0020] In some embodiments, a fixing block is provided between the exhaust enclosure and the ventilation column. A dust blocking wall is further provided on the first end. A fixing notch is provided at one end of the dust blocking wall, and the fixing notch is snap-fitted with the fixing block.

[0021] The dust blocking wall is stuck on the fixing block between the exhaust enclosure and the ventilation column and is clamped between the cover plate assembly and the main body, which can effectively block the dust entering from the exhaust groove, prevent the dust from entering the explosion-proof valve or the equipment, and improve the dust-proof ability of the explosion-proof valve and the equipment.

[0022] In some embodiments, the valve core is of a hollow structure. Exhaust openings are provided on the side wall of the valve core. The top of the valve core is closed. A limiting ring is further provided on the top of the valve core. A second sealing ring is sleeved under the limiting ring. A fixing groove with a V-shaped cross-section is further provided on the first end, and the fixing groove is arranged corresponding to the limiting ring.

[0023] When the external pressure is relatively large, the second sealing ring closely adheres to the V-shaped fixing groove to achieve a sealing effect, and the greater the pressure, the better the sealing effect. When the internal pressure exceeds the preset value, the valve core opens, and the V-shaped fixing groove does not form resistance to the second sealing ring, enabling the pressure inside the equipment to be quickly discharged through the exhaust openings, thereby improving the exhaust efficiency.

[0024] In some embodiments, both the first cover plate and the second cover plate bulge away from the waterproof breathable membrane. Limiting protrusions are further provided on the top end of the valve core and the second cover plate, and the limiting protrusions are used to fix the spring.

[0025] Both the first and second cover plates bulge away from the waterproof breathable membrane, increasing the volume inside the cover plate assembly, providing a larger breathable space for the waterproof breathable membrane, facilitating air circulation, and improving the breathable efficiency. The limiting protrusions on the top end of the valve core and the second cover plate provide a stable installation position for the spring, preventing the spring from shifting or falling off during operation.

[0026] In some embodiments, a moisture-proof ring is further provided in the interlayer. A connecting groove is provided on the inner layer column shell. The moisture-proof ring is sleeved on the connecting groove. The ventilation column passes through the second ventilation hole and stabilizes the cover plate assembly. A third sealing ring is further provided between the second cover plate and the ventilation column.

[0027] The moisture-proof ring is sleeved on the connecting groove of the inner layer column shell, blocking external water vapor from entering the equipment through the interlayer, and better improving the anti-condensation ability of the explosion-proof valve. The ventilation column passes through the second ventilation hole, restricting the movement of the cover plate assembly and playing a stabilizing role on the cover plate assembly.

[0028] In some embodiments, it further includes a thumbtack. The thumbtack can be selectively inserted into the spring from the exhaust groove. The thumbtack is used to lift the spring and connect the inner layer column shell with the outside.

[0029] The pin enables the explosion-proof valve to be manually opened. During initial installation or maintenance, the device needs to be subjected to an airtightness test. It is necessary to keep the explosion-proof valve in an open state to connect the explosion-proof valve to the outside. The explosion-proof valve can be stably opened through the pin, which is more convenient for users to perform the airtightness test. After installation or maintenance, the pin is removed to make the valve body in a sealed working state.

[0030] The beneficial effects of the present utility model are as follows:

[0031] The present utility model provides a waterproof, dustproof, breathable and explosion-proof valve, which includes a cover plate assembly, a main body, a spring and a valve core. Under normal circumstances, the explosion-proof valve exchanges air through the waterproof and breathable film on the cover plate assembly, and the device exchanges air through the first through hole on the air exchange column. When the pressure inside the device increases abnormally, the valve core pushes open the cover plate assembly through the spring, so that the device is directly connected to the outside for pressure relief, avoiding excessive pressure inside the device. By setting a waterproof and breathable film on the cover plate assembly, efficient ventilation of the device in the normal working state is achieved, and the pressure difference between the inside and outside of the device can be balanced in a timely manner, improving the stability and reliability of the device operation. When the internal pressure of the device rises abnormally, the valve core opens under the action of pressure, so that the internal pressure of the device is quickly released, avoiding the risk of explosion caused by excessive pressure. Description of the Drawings

[0032] Figure 1 is an exploded view of the waterproof, dustproof, breathable and explosion-proof valve provided in the embodiment of the present application;

[0033] Figure 2 is an exploded view of the cover plate assembly provided in the embodiment of the present application;

[0034] Figure 3 is an exploded view of the main body, valve core and spring provided in the embodiment of the present application;

[0035] Figure 4 is a cross-sectional exploded view of the waterproof, dustproof, breathable and explosion-proof valve provided in the embodiment of the present application;

[0036] Figure 5 is a cross-sectional view of the main body provided in the embodiment of the present application;

[0037] Figure 6 is a cross-sectional view of the waterproof, dustproof, breathable and explosion-proof valve provided in the embodiment of the present application.

[0038] Reference Signs:

[0039] 100, cover plate assembly;

[0040] 110, Waterproof and breathable membrane; 120, First sealing ring; 130, First cover plate; 131, First ventilation hole; 140, Second cover plate; 141, Second ventilation hole; 150, Support net;

[0041] 200, Main body;

[0042] 210, Inner layer column shell; 211, Connection groove; 220, Outer layer column shell; 230, Interlayer; 231, Moisture-proof ring; 240, First end; 241, Fixing groove; 250, Second end; 260, Ventilation column; 261, First through hole; 262, Third sealing ring; 270, Exhaust enclosure; 271, Exhaust groove; 280, Fixing block; 290, Dust-proof wall; 291, Fixing notch;

[0043] 300, Spool;

[0044] 310, Exhaust opening window; 320, Limit ring; 330, Second sealing ring;

[0045] 400, Spring;

[0046] 500, Pin. Detailed implementation mode

[0047] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to convey the scope of the present invention fully to those skilled in the art.

[0048] Embodiment 1

[0049] As Figures 1-6 shown, this embodiment provides a waterproof, dust-proof, breathable and explosion-proof valve, which includes a cover plate assembly 100, a main body 200, a spring 400 and a spool 300.

[0050] Specifically, the main body 200 includes an inner layer column shell 210 and an outer layer column shell 220. There is an interlayer 230 between the inner layer column shell 210 and the outer layer column shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed and the second end 250 is open. A ventilation column 260 is provided on the first end 240, and a first through hole 261 is provided on the ventilation column 260. The first through hole 261 communicates with the interlayer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used to connect with the device.

[0051] Specifically, the spool 300 is movably connected to the inner layer column shell 210, and the spool 300 is connected to the cover plate assembly 100 through a spring 400.

[0052] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover plate 130 and a second cover plate 140 which are oppositely arranged. A first ventilation hole 131 is provided on the first cover plate 130, and a second ventilation hole 141 corresponding to the ventilation column 260 is provided on the second cover plate 140.

[0053] More specifically, a first sealing ring 120 is fixedly connected to the edge of the waterproof and breathable membrane 110.

[0054] More specifically, a moisture-proof ring 231 is further provided in the interlayer 230. A connecting groove 211 is provided on the inner layer column shell 210. The moisture-proof ring 231 is sleeved on the connecting groove 211. The ventilation column 260 passes through the second ventilation hole 141 and stabilizes the cover plate assembly 100. A third sealing ring 262 is further provided between the second cover plate 140 and the ventilation column 260.

[0055] More specifically, the waterproof and breathable membrane 110 and the first sealing ring 120 are fixed by welding.

[0056] Due to the large spacing between gas molecules, they can pass through the ventilation holes of the waterproof and breathable membrane 110. However, the spacing between liquid molecules is smaller than the spacing of the ventilation holes, and they cannot pass through under the action of surface tension, thus achieving the waterproof effect.

[0057] The waterproof and breathable membrane 110 can be made of a single-layer material or a multi-layer composite material. The material of the waterproof and breathable membrane 110 can be selected according to actual needs, such as PTFE, PE, etc.

[0058] This embodiment provides a waterproof, dustproof, breathable and explosion-proof valve with a simple structure and low cost, which can effectively isolate liquids, allow gas molecules to pass through, and has a certain explosion-proof ability. The welding fixing method improves the connection strength between the waterproof and breathable membrane 110 and the sealing ring, ensuring the sealing performance of the valve.

[0059] Embodiment 2

[0060] As Figures 1-6 shown, this embodiment provides a waterproof, dustproof, breathable and explosion-proof valve, which includes a cover plate assembly 100, a main body 200, a spring 400 and a valve core 300.

[0061] Specifically, the main body 200 includes an inner layer column shell 210 and an outer layer column shell 220. An interlayer 230 is provided between the inner layer column shell 210 and the outer layer column shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed, and the second end 250 is open. A ventilation column 260 is provided on the first end 240. A first through hole 261 is provided on the ventilation column 260. The first through hole 261 communicates with the interlayer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used for connecting with the device.

[0062] Specifically, the valve core 300 is movably connected to the inner layer column shell 210, and the valve core 300 is connected to the cover plate assembly 100 through a spring 400.

[0063] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover piece 130 and a second cover piece 140 which are oppositely arranged. A first ventilation hole 131 is provided on the first cover piece 130, and a second ventilation hole 141 corresponding to the ventilation column 260 is provided on the second cover piece 140.

[0064] More specifically, a first sealing ring 120 is fixedly connected to the edge of the waterproof and breathable membrane 110.

[0065] More specifically, a moisture-proof ring 231 is further provided in the interlayer 230. A connecting groove 211 is provided on the inner layer column shell 210. The moisture-proof ring 231 is sleeved on the connecting groove 211. The ventilation column 260 passes through the second ventilation hole 141 and stabilizes the cover plate assembly 100. A third sealing ring 262 is further provided between the second cover piece 140 and the ventilation column 260.

[0066] More specifically, in this embodiment, the cover plate assembly 100 further includes a support net 150. The support net 150 is arranged close to the waterproof and breathable membrane 110 to enhance the protection of the waterproof and breathable membrane 110.

[0067] The support net 150 can be made of different materials and structures, such as metal mesh, plastic mesh, nylon mesh, etc.

[0068] When the waterproof and breathable membrane 110 is under pressure, it will deform, resulting in the stretching of the membrane body, increasing the internal pores of the waterproof and breathable membrane 110, and thus affecting the waterproof effect of the waterproof and breathable membrane 110. Fixing through the support net 150 can well avoid the abnormal deformation of the waterproof and breathable membrane 110 and ensure the waterproof effect of the waterproof and breathable membrane 110.

[0069] More specifically, in this embodiment, an exhaust enclosure 270 is provided on the first end 240. An exhaust groove 271 is provided on the exhaust enclosure 270. A protrusion is provided on the edge of the exhaust enclosure 270, and the protrusion corresponds to the edge of the cover plate assembly 100. The shape and size of the exhaust enclosure 270 can be adjusted according to actual needs.

[0070] In this embodiment, by adding the support net 150, the waterproof and breathable membrane 110 is effectively prevented from being affected by pressure deformation and the waterproof effect is improved, and the reliability and service life of the valve are improved. The design of the exhaust enclosure 270 and the exhaust groove 271 optimizes the gas discharge path, improves the exhaust efficiency, and enhances the protection of the internal components.

[0071] Embodiment 3

[0072] Such as Figures 1-6As shown in the figure, this embodiment provides a waterproof, dustproof, breathable and explosion-proof valve, which includes a cover plate assembly 100, a main body 200, a spring 400 and a valve core 300.

[0073] Specifically, the main body 200 includes an inner columnar shell 210 and an outer columnar shell 220. There is an interlayer 230 between the inner columnar shell 210 and the outer columnar shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed, and the second end 250 is open. There is a ventilation column 260 on the first end 240, and a first through hole 261 is provided on the ventilation column 260. The first through hole 261 communicates with the interlayer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used to connect to the device.

[0074] Specifically, the valve core 300 is movably connected to the inner columnar shell 210, and the valve core 300 is connected to the cover plate assembly 100 through a spring 400.

[0075] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover plate 130 and a second cover plate 140 which are oppositely arranged. A first ventilation hole 131 is provided on the first cover plate 130, and a second ventilation hole 141 corresponding to the ventilation column 260 is provided on the second cover plate 140.

[0076] More specifically, a first sealing ring 120 is fixedly connected to the edge of the waterproof and breathable membrane 110.

[0077] More specifically, a moisture-proof ring 231 is further provided in the interlayer 230. A connecting groove 211 is provided on the inner columnar shell 210. The moisture-proof ring 231 is sleeved on the connecting groove 211. The ventilation column 260 passes through the second ventilation hole 141 and stabilizes the cover plate assembly 100. A third sealing ring 262 is further provided between the second cover plate 140 and the ventilation column 260.

[0078] More specifically, the cover plate assembly 100 further includes a support net 150. The support net 150 is arranged close to the waterproof and breathable membrane 110 to enhance the protection of the waterproof and breathable membrane 110.

[0079] More specifically, in this embodiment, the support net 150 is a nylon net. Since the high pressure often comes from the pressure in the environment, in this embodiment, the support net 150 is arranged between the waterproof and breathable membrane 110 and the second cover plate 140.

[0080] More specifically, an exhaust enclosure 270 is provided on the first end 240. An exhaust groove 271 is provided on the exhaust enclosure 270. A protrusion is provided on the edge of the exhaust enclosure 270, and the protrusion corresponds to the edge of the cover plate assembly 100.

[0081] The arrangement of the exhaust enclosure 270 can effectively protect the internal components, preventing the internal components of the valve body from being damaged by foreign objects from the outside. At the same time, the exhaust groove 271 can block some foreign objects of larger sizes from entering the valve body.

[0082] In this embodiment, a fixing block 280 is provided between the exhaust enclosure 270 and the air exchange column 260. A dust-proof wall 290 is provided on the first end 240. A fixing notch 291 is provided on the dust-proof wall 290, which is clamped on the fixing block 280 to further enhance the dust-proof ability.

[0083] In this embodiment, by adding a dust-proof wall 290 and a fixing block 280 inside the exhaust enclosure 270, a double dust-proof structure is formed, effectively preventing dust from entering the valve interior, further enhancing the dust-proof ability, and ensuring the long-term stable operation of the valve.

[0084] Embodiment 4

[0085] As Figures 1-6 shown, this embodiment provides a waterproof, dust-proof, breathable and explosion-proof valve, which includes a cover plate assembly 100, a main body 200, a spring 400 and a valve core 300.

[0086] Specifically, the main body 200 includes an inner layer column shell 210 and an outer layer column shell 220. A sandwich layer 230 is provided between the inner layer column shell 210 and the outer layer column shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed, and the second end 250 is open. An air exchange column 260 is provided on the first end 240. A first through hole 261 is provided on the air exchange column 260, and the first through hole 261 communicates with the sandwich layer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used for connecting to the equipment.

[0087] Specifically, the valve core 300 is movably connected to the inner layer column shell 210, and the valve core 300 and the cover plate assembly 100 are connected by a spring 400.

[0088] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover plate 130 and a second cover plate 140 arranged oppositely. A first air vent 131 is provided on the first cover plate 130, and a second air vent 141 corresponding to the air exchange column 260 is provided on the second cover plate 140.

[0089] More specifically, a first sealing ring 120 is fixedly connected to the edge of the waterproof and breathable membrane 110.

[0090] More specifically, a moisture-proof ring 231 is further provided in the sandwich layer 230. A connection groove 211 is provided on the inner layer column shell 210. The moisture-proof ring 231 is sleeved on the connection groove 211. The air exchange column 260 passes through the second air vent 141 and stabilizes the cover plate assembly 100. A third sealing ring 262 is further provided between the second cover plate 140 and the air exchange column 260.

[0091] More specifically, the cover plate assembly 100 further includes a support net 150, which is disposed close to the waterproof and breathable film 110 to enhance the protection of the waterproof and breathable film 110.

[0092] More specifically, in this embodiment, the support net 150 is a nylon net, and the nylon net is directly adhered to the surface of the waterproof and breathable film 110, which can further improve the protection ability of the waterproof and breathable film 110.

[0093] More specifically, an exhaust enclosure 270 is provided on the first end 240, an exhaust groove 271 is provided on the exhaust enclosure 270, and a protrusion is provided on the edge of the exhaust enclosure 270, and the protrusion is disposed corresponding to the edge of the cover plate assembly 100.

[0094] More specifically, a fixing block 280 is provided between the exhaust enclosure 270 and the ventilation column 260, a dust blocking wall 290 is provided on the first end 240, and a fixing notch 291 is provided on the dust blocking wall 290, which is clamped on the fixing block 280.

[0095] More specifically, in this embodiment, a needle 500 is further included. The needle 500 can be inserted into the spring 400 through the exhaust groove 271 to lift the spring 400, and the valve can be manually opened for exhaust or equipment airtightness detection.

[0096] More specifically, one end of the needle 500 may be provided with an elbow, and the other end may be provided with an anti-slip block. The elbow can prevent the needle 500 from falling into the valve body during the process of inserting the valve body, affecting the normal use of the valve body, and the anti-slip block can improve the stability of the needle 500 when lifting the spring 400.

[0097] In this embodiment, the valve can be conveniently opened through the needle 500, which is convenient for equipment airtightness detection, improving the convenience of use and maintenance efficiency. The anti-slip design and elbow design of the needle 500 further improve the convenience and safety of operation.

[0098] Embodiment 5

[0099] As Figures 1-6 shown, this embodiment provides a waterproof, dustproof, breathable and explosion-proof valve, which includes a cover plate assembly 100, a main body 200, a spring 400 and a valve core 300.

[0100] Specifically, the main body 200 includes an inner cylindrical shell 210 and an outer cylindrical shell 220. There is an interlayer 230 between the inner cylindrical shell 210 and the outer cylindrical shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed, and the second end 250 is open. A ventilation column 260 is provided on the first end 240. A first through hole 261 is provided on the ventilation column 260, and the first through hole 261 communicates with the interlayer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used to connect with the device.

[0101] Specifically, the valve core 300 is movably connected to the inner cylindrical shell 210, and the valve core 300 is connected to the cover plate assembly 100 through a spring 400.

[0102] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover piece 130 and a second cover piece 140 which are oppositely arranged. A first ventilation hole 131 is provided on the first cover piece 130, and a second ventilation hole 141 corresponding to the ventilation column 260 is provided on the second cover piece 140.

[0103] More specifically, a moisture-proof ring 231 is further provided in the interlayer 230. A connection groove 211 is provided on the inner cylindrical shell 210. The moisture-proof ring 231 is sleeved on the connection groove 211. The ventilation column 260 passes through the second ventilation hole 141 and stabilizes the cover plate assembly 100. A third sealing ring 262 is also provided between the second cover piece 140 and the ventilation column 260.

[0104] More specifically, the cover plate assembly 100 further includes a support net 150. The support net 150 is arranged close to the waterproof and breathable membrane 110 to enhance the protection of the waterproof and breathable membrane 110. In this embodiment, there are two support nets 150, and the two support nets 150 are respectively pasted and fixed on both sides of the waterproof and breathable net.

[0105] More specifically, an exhaust enclosure 270 is provided on the first end 240. An exhaust groove 271 is provided on the exhaust enclosure 270. A protrusion is provided on the edge of the exhaust enclosure 270, and the protrusion is arranged corresponding to the edge of the cover plate assembly 100.

[0106] More specifically, a fixing block 280 is provided between the exhaust enclosure 270 and the ventilation column 260. A dust-proof wall 290 is provided on the first end 240. A fixing notch 291 is provided on the dust-proof wall 290, which is clamped on the fixing block 280 to further improve the dust-proof ability.

[0107] More specifically, it further includes a clamping pin 500. The clamping pin 500 can be inserted into the spring 400 through the exhaust groove 271 to lift the spring 400, and the valve is manually opened for the airtightness detection of the device.

[0108] More specifically, in this embodiment, the valve core 300 has a hollow structure, with exhaust openings 310 provided on the side wall. The top is closed and is provided with a limiting ring 320 and a second sealing ring 330. A V-shaped fixing groove 241 is provided on the first end 240. The limiting ring 320 cooperates with the fixing groove 241 to achieve fast and reliable exhaust and sealing.

[0109] This embodiment adopts the design of a hollow valve core 300 and exhaust openings 310, which greatly improves the exhaust speed and efficiency. At the same time, the cooperation of the V-shaped fixing groove 241 and the limiting ring 320 ensures the reliable sealing of the valve core 300 and improves the performance of the valve core 300 in high-demand environments.

[0110] Embodiment 6

[0111] As Figures 1-6 shown, this embodiment provides a waterproof, dustproof, breathable and explosion-proof valve, which is applied to the power battery of an electric vehicle. The waterproof, dustproof, breathable and explosion-proof valve includes a cover plate assembly 100, a main body 200, a spring 400 and a valve core 300.

[0112] Specifically, the main body 200 includes an inner cylindrical shell 210 and an outer cylindrical shell 220. There is a sandwich layer 230 between the inner cylindrical shell 210 and the outer cylindrical shell 220. The main body 200 includes a first end 240 and a second end 250. The first end 240 is closed, and the second end 250 is open. A ventilation column 260 is provided on the first end 240, and a first through hole 261 is provided on the ventilation column 260. The first through hole 261 communicates with the sandwich layer 230. The cover plate assembly 100 is covered on the first end 240, and the second end 250 is used to connect to the device.

[0113] More specifically, in this embodiment, the outer cylindrical shell 220 is provided with threads for connecting to the reserved connection port of the power battery. A sealing gasket can also be provided between the outer cylindrical shell 220 and the reserved connection port. In order to better fix and improve the effect of the sealing gasket, a groove can of course also be provided on the outer cylindrical shell 220 corresponding to the sealing gasket.

[0114] Specifically, the valve core 300 is movably connected to the inner cylindrical shell 210, and the valve core 300 is connected to the cover plate assembly 100 through a spring 400.

[0115] Specifically, the cover plate assembly 100 includes a waterproof and breathable membrane 110, a first cover plate 130 and a second cover plate 140 arranged oppositely. A first ventilation hole 131 is provided on the first cover plate 130, and a second ventilation hole 141 corresponding to the ventilation column 260 is provided on the second cover plate 140.

[0116] More specifically, the cover plate assembly 100 further includes a support net 150, and the support net 150 is arranged close to the waterproof and breathable membrane 110 to enhance the protection of the waterproof and breathable membrane 110.

[0117] More specifically, in this embodiment, there are two support nets 150, both of which are made of nylon material and are respectively arranged on both sides of the waterproof and breathable membrane 110, so that the cover plate assembly 100 includes, in sequence, a first cover sheet 130, a nylon material support net 150, a waterproof and breathable membrane 110, a nylon material support net 150, and a second cover sheet 140.

[0118] More specifically, a first sealing ring 120 is fixedly connected to the edge of the waterproof and breathable membrane 110.

[0119] More specifically, in this embodiment, both the first cover sheet 130 and the second cover sheet 140 bulge away from the waterproof and breathable membrane 110 to increase the ventilation space. Limit protrusions are provided at the top of the valve core 300 and the second cover sheet 140 for fixing the spring 400 to improve stability.

[0120] More specifically, in this embodiment, the edge of the second cover sheet 140 is wrapped upwards around the first cover sheet 130 to make the cover plate assembly 100 form a stable structure.

[0121] More specifically, an exhaust enclosure 270 is provided on the first end 240, an exhaust groove 271 is provided on the exhaust enclosure 270, and a protrusion is provided on the edge of the exhaust enclosure 270, and the protrusion is arranged corresponding to the edge of the cover plate assembly 100.

[0122] More specifically, a moisture-proof ring 231 is further provided in the interlayer 230, a connection groove 211 is provided on the inner layer column shell 210, the moisture-proof ring 231 is sleeved on the connection groove 211, the ventilation column 260 passes through the second ventilation hole 141, and the cover plate assembly 100 is stabilized. A third sealing ring 262 is also provided between the second cover sheet 140 and the ventilation column 260.

[0123] More specifically, in this embodiment, the inner layer column shell 210, the outer layer column shell 220, and the valve core 300 are all cylindrical. Six ventilation columns 260 are evenly arranged in a circular distribution, and the corresponding second ventilation holes 141 and third sealing rings 262 are also provided in six.

[0124] That is to say, six ventilation columns 260 respectively pass through the corresponding second ventilation holes 141. It can be understood that the second ventilation holes 141 should be slightly larger than the outer diameter of the ventilation columns 260 so that the ventilation columns 260 can just pass through the second ventilation holes 141 and limit the movement of the cover plate assembly 100.

[0125] More specifically, the moisture-proof ring 231 is a silica gel ring. The moisture-proof ring 231 extends from the connection groove 211 on the inner layer column shell 210 to the outer layer column shell 220, connecting the inner layer column shell 210 and the outer layer column shell 220, so that the interlayer 230 is divided into upper and lower parts to prevent moisture from entering the device.

[0126] A sealing ring fixing platform is also provided around the air exchange column 260. A groove is provided between the sealing ring fixing platform and the air exchange column 260 for fixing the third sealing ring 262 and improving the sealing effect of the third sealing ring 262.

[0127] More specifically, the exhaust groove 271 is arranged avoiding the air exchange column 260. That is to say, the exhaust groove 271 is arranged between two air exchange columns 260, with a total of six places, and each place is provided with 4 exhaust slots.

[0128] More specifically, fixing blocks 280 are provided between the exhaust enclosure 270 and the air exchange column 260. That is to say, there are six fixing blocks 280. A dust blocking wall 290 is provided on the first end 240, and fixing notches 291 are provided on the dust blocking wall 290. That is to say, there are six fixing notches 291 which are clamped on the six fixing blocks 280, further improving the dust prevention ability.

[0129] More specifically, in this embodiment, the dust blocking wall 290 is a silicone rubber ring, the fixing block 280 is a rectangular block, and the shape of the fixing notch 291 corresponds to that of the fixing block 280. That is to say, the shape of the fixing notch 291 is also rectangular. The dust blocking wall 290 is clamped between the cover plate assembly 100 and the main body 200.

[0130] More specifically, it further includes a pin 500. The pin 500 can be inserted into the spring 400 through the exhaust groove 271 to lift the spring 400, and the valve is manually opened to perform the airtightness detection of the device.

[0131] More specifically, the valve core 300 is of a hollow structure, with exhaust openings 310 provided on the side wall, and the top is closed and provided with a limit ring 320 and a second sealing ring 330, which cooperate with the V-shaped fixing groove 241 on the first end 240 to achieve fast and reliable exhaust and sealing.

[0132] More specifically, the limit ring 320 extends from the top surface of the valve core 300 to the side. The V-shaped fixing groove 241 is a groove with a V-shaped cross-section. The V-shaped fixing groove 241 can effectively improve the sealing effect at the limit ring 320. When the external pressure increases, the V-shaped fixing groove 241 can cause the second sealing ring 330 to deform in the groove, improving the fixing effect and sealing effect of the second sealing ring 330. And when the internal pressure is abnormal, the V-shaped fixing groove 241 will not hinder the second sealing ring 330 from moving away, ensuring the smooth start of the valve core.

[0133] More specifically, during the initial installation, the ejector pin 500 holds up the spring 400 through the exhaust groove 271, keeping the explosion-proof valve in the open state. The explosion-proof valve is fixed to the reserved interface of the power battery through the threads on the outer cylindrical shell 220. Since the explosion-proof valve is in the open state, there is no need to manually pull out the valve body, and the airtightness of the power battery can be conveniently detected. After the airtightness detection is completed, the ejector pin 500 can be pulled out to make the explosion-proof valve enter the normal working state.

[0134] More specifically, after maintenance, it is necessary to re-detect the airtightness of the power battery. At this time, the ejector pin 500 needs to be inserted into the exhaust groove 271 to hold up the spring 400, keeping the explosion-proof valve in the open state, and then the airtightness detection is carried out. After the airtightness detection is completed, the ejector pin 500 is pulled out to make the explosion-proof valve return to the working state.

[0135] The explosion-proof valve in this embodiment is applied in the power battery, which can effectively meet the requirements of the power battery for dust and water prevention and pressure balance, and can timely discharge the gas in the power battery when the air pressure in the power battery is abnormal, preventing the air pressure in the power battery from increasing abnormally, avoiding the chain damage of the power battery under high pressure, aggravating the damage degree of the battery, effectively avoiding the chain explosion of the battery, and ensuring the safe use of the battery.

[0136] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0137] In addition, it should be noted that the use of terms such as "first" and "second" is only for the convenience of distinction. Without additional declaration, the above terms have no special meaning, and thus cannot be construed as a limitation on the protection scope of the present application.

[0138] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof, dustproof, breathable and explosion-proof valve, characterized in that: include: A cover plate assembly (100), the cover plate assembly (100) comprising a waterproof breathable membrane (110); A main body (200), wherein the main body (200) comprises an inner column shell (210) and an outer column shell (220), wherein an interlayer (230) is provided between the inner column shell (210) and the outer column shell (220), wherein the main body (200) comprises a first end (240) and a second end (250), wherein the first end (240) is closed, and the second end (250) is open, wherein a ventilation column (260) is provided on the first end (240), wherein a first through hole (261) is provided on the ventilation column (260), and wherein the first through hole (261) is connected to the interlayer (230), wherein the cover plate assembly (100) is covered on the first end (240), and wherein the second end (250) is used for connecting with a device; A valve core (300), wherein the valve core (300) is movably connected to the inner column shell (210), and the valve core (300) is connected to the cover plate assembly (100) via a spring (400).

2. The waterproof, dustproof, breathable and explosion-proof valve according to claim 1, characterized in that: A first sealing ring (120) is fixedly connected to the edge of the waterproof and breathable membrane (110).

3. The waterproof, dustproof, breathable and explosion-proof valve according to claim 2, characterized in that: The cover plate assembly (100) further comprises a first cover sheet (130) and a second cover sheet (140) which are arranged opposite to each other, the waterproof breathable membrane (110) being arranged between the first cover sheet (130) and the second cover sheet (140), the first cover sheet (130) being provided with a first breathable hole (131), and the second cover sheet (140) being provided with a second breathable hole (141) corresponding to the ventilation column (260).

4. The waterproof, dustproof, breathable and explosion-proof valve according to claim 3, characterized in that: The cover plate assembly (100) further comprises a support net (150), wherein the support net (150) is arranged close to the waterproof breathable membrane (110).

5. The waterproof, dustproof, breathable and explosion-proof valve according to claim 4, characterized in that: An exhaust wall (270) is also provided on the first end (240), an exhaust groove (271) is provided on the exhaust wall (270), and a protrusion is provided on the edge of the exhaust wall (270), and the protrusion is arranged corresponding to the edge of the cover plate assembly (100).

6. The waterproof, dustproof, breathable and explosion-proof valve according to claim 5, characterized in that: A fixing block (280) is provided between the exhaust enclosure (270) and the ventilation column (260), and a dust blocking wall (290) is also provided on the first end (240). A fixing notch (291) is provided at one end of the dust blocking wall (290), and the fixing notch (291) is clamped with the fixing block (280).

7. The waterproof, dustproof, breathable and explosion-proof valve according to claim 6, characterized in that: The valve core (300) is a hollow structure, and the side wall of the valve core (300) is provided with an exhaust window (310). The top of the valve core (300) is closed, and a limiting ring (320) is also provided on the top of the valve core (300). A second sealing ring (330) is provided under the limiting ring (320). A fixing groove (241) with a V-shaped cross section is also provided on the first end (240), and the fixing groove (241) is arranged corresponding to the limiting ring (320).

8. The waterproof, dustproof, breathable and explosion-proof valve according to claim 7, characterized in that: The first cover sheet (130) and the second cover sheet (140) both bulge in a direction away from the waterproof breathable membrane (110), and a limiting protrusion is also provided on the top of the valve core (300) and the second cover sheet (140), and the limiting protrusion is used to fix the spring (400).

9. The waterproof, dustproof, breathable and explosion-proof valve according to claim 8, characterized in that: A moisture-proof ring (231) is also provided in the interlayer (230), a connecting groove (211) is provided on the inner column shell (210), and the moisture-proof ring (231) is sleeved on the connecting groove (211). The ventilation column (260) passes through the second air hole (141) and stabilizes the cover plate assembly (100). A third sealing ring (262) is also provided between the second cover plate (140) and the ventilation column (260).

10. The waterproof, dustproof, breathable and explosion-proof valve according to claim 9, characterized in that: It also includes a card pin (500), which can be selectively inserted into the spring (400) through the exhaust groove (271). The card pin (500) is used to support the spring (400) so that the inner column shell (210) is connected to the outside.

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