Electromagnetic explosion-proof valve

Abstract

The utility model relates to an electromagnetic explosion-proof valve. The electromagnetic anti-explosion valve comprises a valve body assembly and a valve assembly. The valve body assembly comprises an electromagnetic valve body, an electromagnetic ejector rod arranged on the electromagnetic valve body and a valve body connecting piece arranged on the anti-explosion valve body. The valve assembly comprises a valve seat connected with the valve body connecting piece and a valve cover plate correspondingly matched with the valve seat, the valve cover plate is connected with the electromagnetic ejector rod, a ventilation opening is formed in the valve seat, and the valve cover plate is used for opening the ventilation opening under the driving of the electromagnetic ejector rod; wherein the valve cover plate is provided with a ventilation film with ventilation holes, and the ventilation film and the ventilation holes are correspondingly arranged. The electromagnetic explosion-proof valve can solve the technical problem that the internal pressure of a cabinet or equipment cannot be balanced with the external pressure due to the fact that an electromagnetic explosion-proof valve in the prior art generally does not have a ventilation function.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic explosion-proof valve. Background Art

[0002] The main function of electromagnetic explosion-proof valve is to prevent equipment from explosion or fire. Electromagnetic explosion-proof valve can be installed in cabinets or related equipment. When the pressure of the medium inside the equipment exceeds the normal range, the explosion-proof valve will automatically open to discharge the excess medium through the valve, thereby avoiding excessive pressure inside the equipment and protecting the safety of equipment and personnel. In some cases, when the cabinet or equipment is working normally, it is required that the internal pressure and external pressure be balanced. However, traditional electromagnetic explosion-proof valves usually do not have a venting function, so that the internal pressure of the cabinet or equipment cannot be balanced with the external pressure. Utility Model Content

[0003] The utility model provides an electromagnetic explosion-proof valve, which can solve the technical problem that the electromagnetic explosion-proof valve in the traditional technology usually has no ventilation function, so that the internal pressure of the cabinet or equipment cannot be balanced with the external pressure.

[0004] In order to solve the above technical problems, the utility model provides an electromagnetic explosion-proof valve, comprising:

[0005] A valve body assembly, comprising a solenoid valve body, a solenoid push rod arranged on the solenoid valve body, and a valve body connector arranged on the explosion-proof valve body; and

[0006] A valve assembly, comprising a valve seat connected to the valve body connector, and a valve cover plate corresponding to the valve seat, the valve cover plate being connected to the electromagnetic push rod, a vent being provided on the valve seat, and the valve cover plate being used to open the vent under the drive of the electromagnetic push rod;

[0007] Wherein, a breathable membrane with breathable holes is provided on the valve cover plate, and the breathable membrane is arranged corresponding to the breathable opening.

[0008] Optionally, the valve cover plate comprises a cover plate body matched with the valve seat, the cover plate body is provided with a cover plate opening corresponding to the air permeable opening, and the air permeable membrane is arranged at the cover plate opening of the cover plate body.

[0009] Optionally, the cover plate body is provided with a plurality of cover plate openings, and each of the cover plate openings is correspondingly sealed with a piece of the breathable membrane; or,

[0010] The cover plate body is configured as an annular cover plate, the cover plate opening is formed in the middle of the annular cover plate, and a piece of the air-permeable membrane is sealed at the cover plate opening.

[0011] Optionally, the breathable membrane is a polytetrafluoroethylene microporous membrane.

[0012] Optionally, a ring-shaped cover plate protrusion is provided on one side of the cover plate body;

[0013] The valve seat comprises a main seat body for connecting with a cabinet or equipment, one side of the main seat body is provided with an annular sealing groove, and the cover plate protrusion is snap-fitted with the sealing groove.

[0014] Optionally, a seat groove communicating with the air vent is provided on one side of the main seat body, and the cover plate body is buckled in the seat groove;

[0015] The sealing groove is arranged around the bottom surface of the seat body groove, a first sealing gasket is arranged in the sealing groove, and the cover plate protrusion is correspondingly matched with the first sealing gasket.

[0016] Optionally, the electromagnetic explosion-proof valve includes a fan assembly;

[0017] The fan assembly comprises a fan connecting frame connected to the valve seat, and an electric fan arranged on the fan connecting frame. The electric fan and the valve body assembly are located on the same side of the valve seat.

[0018] Optionally, the fan connecting frame includes a plurality of connecting rods arranged around the end surface of the electric fan, and the plurality of connecting rods are all connected to the valve seat;

[0019] An installation cavity is formed between the plurality of connecting rods, the valve body assembly is located in the installation cavity, and the installation cavity is communicated with the air vent.

[0020] Optionally, the valve body connecting member includes a valve body connecting plate provided on a side surface of the solenoid valve body, and an end portion of the valve body connecting plate is detachably connected to the valve seat.

[0021] Optionally, an annular mounting protrusion is provided on one side of the valve seat, and a second sealing gasket is provided at the mounting protrusion.

[0022] The beneficial effects brought by the technical solution provided by the utility model include:

[0023] The entire electromagnetic explosion-proof valve can be installed on the cabinet of the cabinet or the shell of the equipment through the valve seat of the valve assembly, and the valve body assembly of the electromagnetic explosion-proof valve is located inside the cabinet or the equipment, while the valve cover of the valve assembly is located outside the cabinet or the equipment. When it is detected that the air pressure inside the cabinet or the equipment increases sharply to a certain value, the electromagnetic valve body can act on the electromagnetic push rod, so that the electromagnetic push rod presses the valve cover of the valve assembly to the outside of the cabinet or the equipment, so that the valve cover closed on the outside of the valve seat moves outward, so that the valve cover is separated from the valve seat, thereby generating a pressure relief gap between the valve seat and the valve cover, so that the gas inside the cabinet or the equipment can be quickly discharged to the outside through the air vent on the valve seat and the pressure relief gap between the valve seat and the valve cover, so as to reduce the internal air pressure of the cabinet or the equipment, thereby avoiding excessive pressure inside the cabinet or the equipment and protecting the safety of equipment and personnel. Moreover, by providing a breathable membrane on the valve cover of the valve assembly, under normal conditions, the gas inside the cabinet or device and the gas outside the cabinet or device can penetrate each other through the breathable membrane, thereby ensuring the air pressure balance inside and outside the cabinet or device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The three-dimensional structure schematic diagram of the electromagnetic explosion-proof valve according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 The three-dimensional structure schematic diagram of the electromagnetic explosion-proof valve according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the top view of the electromagnetic explosion-proof valve according to an embodiment of the utility model;

[0028] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of section AA;

[0029] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure of the BB section;

[0030] Figure 6 The schematic diagram of the decomposition structure of the electromagnetic explosion-proof valve according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0031] Figure 7 The schematic diagram of the decomposition structure of the electromagnetic explosion-proof valve according to the embodiment of the utility model is shown in FIG. Figure 2 .

[0032] In the figure: 10, electromagnetic explosion-proof valve; 100, valve body assembly; 110, electromagnetic valve body; 120, electromagnetic push rod; 130, valve body connector; 200, valve assembly; 202, air vent; 210, valve seat; 212, main seat body; 213, seat body groove; 214, sealing groove; 216, mounting protrusion; 220, valve cover; 221, cover body; 222, breathable membrane; 224, cover protrusion; 225, cover port; 230, first sealing gasket; 240, second sealing gasket; 300, fan assembly; 310, electric fan; 320, fan connecting frame; 322, connecting rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] like Figure 1 to Figure 2 As shown, the utility model proposes an electromagnetic explosion-proof valve 1010, including a valve body assembly 100, and a valve assembly 200 connected to the valve body assembly 100. The valve assembly 200 can be installed on the cabinet of the cabinet or the shell of the equipment, and the valve body assembly 100 can be located inside the cabinet or inside the equipment. When the air pressure inside the cabinet or the equipment is too high, the valve body assembly 100 can be used to open the valve assembly 200 on the cabinet of the cabinet or the shell of the equipment to relieve the pressure inside and ensure safety.

[0035] Specifically, Figures 2 to 5 As shown, the valve body assembly 100 may include a solenoid valve body 110, a solenoid push rod 120 disposed on the solenoid valve body 110, and a valve body connector 130 disposed on the explosion-proof valve body. Moreover, the valve assembly 200 may include a valve seat 210 connected to the valve body connector 130, and a valve cover plate 220 correspondingly matched with the valve seat 210, the valve cover plate 220 is connected to the solenoid push rod 120, and a vent 202 is provided on the valve seat 210, and the valve cover plate 220 is used to open the vent 202 under the drive of the solenoid push rod 120.

[0036] The entire electromagnetic explosion-proof valve 10 can be installed on the cabinet of the cabinet or the shell of the equipment through the valve seat 210 of the valve assembly 200, so that the valve body assembly 100 of the electromagnetic explosion-proof valve 10 is located inside the cabinet or the equipment, and the valve cover plate 220 of the valve assembly 200 is located outside the cabinet or the equipment. When it is detected that the air pressure inside the cabinet or equipment increases sharply to a certain value, the solenoid valve body 110 can act on the electromagnetic push rod 120, so that the electromagnetic push rod 120 presses the valve cover plate 220 of the valve assembly 200 toward the outside of the cabinet or equipment, so that the valve cover plate 220 closed on the outside of the valve seat 210 moves outward, so that the valve cover plate 220 is separated from the valve seat 210, thereby generating a pressure relief gap between the valve seat 210 and the valve cover plate 220, so that the gas inside the cabinet or equipment can pass through the air vent 202 on the valve seat 210 and the pressure relief gap between the valve seat 210 and the valve cover plate 220, and quickly discharge the gas to the outside to reduce the internal air pressure of the cabinet or equipment, thereby avoiding excessive pressure inside the cabinet or equipment and protecting the safety of equipment and personnel.

[0037] Moreover, if Figures 4 to 7 As shown, a breathable membrane 222 with breathable holes may be provided on the valve cover plate 220, and the breathable membrane 222 is provided corresponding to the breathable port 202. By providing the breathable membrane 222 on the valve cover plate 220 of the valve assembly 200, in a normal state (i.e., when the valve cover plate 220 is closed on the valve seat 210), the gas inside the cabinet or the device and the gas outside thereof can penetrate each other through the breathable membrane 222, thereby ensuring the balance of the air pressure inside and outside the cabinet or the device.

[0038] In addition, the valve body connector 130 of the valve body assembly 100 may include a valve body connecting plate provided on the side of the solenoid valve body 110, and the end of the valve body connecting plate is detachably connected to the valve seat 210. The solenoid valve body 110 and the valve seat 210 may be detachably connected together by the valve body connecting plate provided on the side of the solenoid valve body 110. Moreover, the valve body connecting plate may include a main connecting plate detachably connected to the side of the solenoid valve body 110, and a bent plate detachably connected to the valve seat 210, and the bent plate is connected to the main connecting plate to form an L-shaped plate body.

[0039] Moreover, an electromagnetic push rod 120 is provided on each side of the electromagnetic valve body 110 of the valve body assembly 100, and both electromagnetic push rods 120 can pass through the valve seat 210 and be connected to the valve cover plate 220, so as to press the valve cover plate 220 from both sides at the same time to open the valve cover plate 220, and the force is more balanced. In addition, each electromagnetic push rod 120 is arranged side by side with the electromagnetic valve body 110, that is, the electromagnetic push rods 120 are arranged along the extension direction of the electromagnetic valve body 110.

[0040] Moreover, the valve body connector 130 may include a valve body connecting plate disposed on one side of the solenoid valve body 110, or may include a valve body connecting plate disposed on each of the two sides of the solenoid valve body 110, and the valve body connecting plate and the solenoid ejector 120 are staggered (i.e., located on different sides of the solenoid valve body 110) so as not to interfere with each other. In this embodiment, a valve body connecting plate may be disposed on one side of the solenoid valve body 110, which has a simple structure.

[0041] In addition, the valve seat 210 may include a main seat body 212 for detachably connecting to a cabinet body of a cabinet or a housing of an equipment, and at least one through hole may be provided in the middle of the main seat body 212, and the through hole may form a vent 202 on the valve seat 210. In addition, a connecting hole may be provided in the middle of the main seat body 212, and the end of the electromagnetic ejector 120 may pass through the connecting hole to connect to the valve cover plate 220. In addition, the valve body connecting plate may be connected to the entity part in the middle of the main seat body 212.

[0042] Moreover, the valve cover plate 220 may include a cover plate body 221 that matches the main seat body 212 of the valve seat 210, and the cover plate body 221 may be provided with a cover plate opening that corresponds to the air permeable opening 202, and the air permeable membrane 222 may be provided at the cover plate opening of the cover plate body 221, and the cover plate body 221 is connected to the end of the electromagnetic push rod 120. Moreover, in this embodiment, the cover plate body 221 may be set as a circular plate structure, and the main seat body 212 of the valve seat 210 may also be set as a circular structure. In addition, the main seat body 212 may also be set as a rectangular structure, or a conical structure, or other shape structures; the cover plate body 221 may also be set as a rectangular structure, or a conical structure, or other shape structures.

[0043] Under normal working conditions, the valve cover plate 220 is closed on the valve seat 210, that is, the cover plate body 221 covers the main seat body 212 of the valve seat 210, and the air vent 202 and other holes on the main seat body 212 are closed, so that the gas inside and outside the valve seat 210 will not flow in large quantities, but the gas inside and outside the valve seat 210 can be slightly circulated through the air permeable membrane 222 on the cover plate body 221, so that the gas pressure inside and outside the valve seat 210 is balanced. Since the main seat body 212 of the valve seat 210 is generally installed on the cabinet wall of the cabinet of the mechanism, or installed on the shell of the equipment, and the valve body assembly 100 is located inside the cabinet or inside the equipment, the valve cover plate 220 is located outside the cabinet or outside the equipment, so that the air pressure inside the cabinet or the equipment can be balanced with the air pressure outside the cabinet.

[0044] Moreover, when the air pressure inside the cabinet or equipment exceeds the normal range, the electromagnetic explosion-proof valve 10 will automatically open, and at this time, the electromagnetic valve body 110 acts on the electromagnetic push rod 120, so that the electromagnetic push rod 120 presses in the direction of the valve cover plate 220, and pushes the valve cover plate 220 covering the main seat body 212 of the valve seat 210 to separate from the main seat body 212, and a pressure relief gap can be generated between the edge of the valve cover plate 220 and the edge of the main seat body 212, so that the gas inside the cabinet or equipment passes through the air vent 202 on the main seat body 212 and the pressure relief gap, and is quickly discharged to the outside. After the pressure relief is completed, the valve cover plate 220 can be pressed by external force to be re-sealed on the main seat body 212 of the valve seat 210, or the electromagnetic valve body 110 can act on the electromagnetic push rod 120, so that the electromagnetic push rod 120 shrinks in the direction away from the valve cover plate 220, so that the valve cover plate 220 is re-sealed on the main seat body 212 of the valve seat 210.

[0045] Furthermore, the cover plate body 221 may be provided with a plurality of cover plate openings 225, and each cover plate opening 225 may be sealed with a corresponding air permeable membrane 222. That is, a plurality of small-area air permeable membranes 222 may be provided on the cover plate body 221 to enhance the air permeability of the valve cover plate 220, so that the air pressure inside the cabinet or equipment can be balanced with the air pressure outside the cabinet or equipment more quickly. Specifically, two, three, or four air permeable membranes 222 may be provided on the cover plate body 221, and a greater number of air permeable membranes 222 may be provided as required; in addition, one air permeable membrane 222 may be provided on the cover plate body 221.

[0046] In addition, the cover plate body 221 can also be set as an annular cover plate, and a cover plate opening 225 can be formed in the middle of the annular cover plate, and a breathable membrane 222 is sealed at the cover plate opening 225. That is, a large-area breathable membrane 222 can be set on the cover plate body 221, so that the valve cover plate 220 has a strong breathability.

[0047] Moreover, in this embodiment, the air permeable membrane 222 can be set as a polytetrafluoroethylene microporous membrane, which has good micro-permeability. In addition, the air permeable membrane 222 can also be set as a microporous membrane of other materials.

[0048] In addition, a ring-shaped cover protrusion 224 may be provided on one side of the cover body 221 of the valve cover plate 220; correspondingly, a ring-shaped sealing groove 214 is provided on one side of the main seat body 212 of the valve seat 210, and the cover protrusion 224 is snap-fitted with the sealing groove 214. When the valve cover plate 220 is covered on the main seat body 212 of the valve seat 210, the cover protrusion 224 on the cover body 221 can be snap-fitted into the sealing groove 214 of the main seat body 212, so that the valve cover plate 220 has a better sealing effect on the valve seat 210. Moreover, the sealing groove 214 is provided on the peripheral side of the air vent 202 of the main seat body 212 of the valve seat 210 to prevent gas leakage.

[0049] Moreover, a seat body groove 213 communicating with the air vent 202 may be provided on one side of the main seat body 212, and the cover plate body 221 is buckled in the seat body groove 213. That is, a seat body groove 213 may be concavely provided on one side of the main seat body 212 of the valve seat 210, so that when the valve cover plate 220 is covered on the main seat body 212, the valve cover plate 220 may be located in the seat body groove 213, which not only allows the valve seat 210 and the valve cover plate 220 to be tightly connected, but also allows the valve cover plate 220 to be hidden in the valve seat 210, that is, the valve cover plate 220 will not protrude to the outside of the cabinet or equipment under normal conditions, and is not easily damaged. Specifically, the minimum depth value of the seat body groove 213 may be greater than or equal to the maximum thickness value of the valve cover plate 220, and the surrounding shape of the valve cover plate 220 may correspond to the surrounding shape of the seat body groove 213, so that the valve cover plate 220 can be completely buckled and hidden in the seat body groove 213.

[0050] Moreover, the sealing groove 214 can be arranged around the bottom surface of the seat body groove 213, and a first sealing gasket 230 can be arranged in the sealing groove 214, and the cover plate protrusion 224 can be matched with the first sealing gasket 230. In this way, when the cover plate protrusion 224 is clamped in the sealing groove 214, it can be further sealed by the first sealing gasket 230, so that the valve cover plate 220 has a better sealing effect on the valve seat 210.

[0051] In addition, the other side of the main seat body 212 of the valve seat 210 may be provided with an annular mounting protrusion 216, and a second sealing gasket 240 is provided at the mounting protrusion 216. When the valve seat 210 is installed on the cabinet wall of the cabinet or the housing of the equipment, the mounting protrusion 216 protruding from the side of the main seat body 212 can be snapped into the cabinet wall of the cabinet or the housing of the equipment, and sealed by the second sealing ring, so that the connection between the valve seat 210 and the cabinet or the equipment is tight and reliable.

[0052] In addition, the electromagnetic explosion-proof valve 10 may further include a fan assembly 300 connected to the valve seat 210, and the fan assembly 300 may be located on one side of the valve body assembly 100. When the valve seat 210 of the electromagnetic explosion-proof valve 10 is installed on a cabinet or device, the fan assembly 300 and the valve body assembly 100 are both located inside the cabinet or device. By arranging the fan assembly 300 on the valve seat 210, the air circulation inside the cabinet or device can be accelerated, which helps the gas inside the cabinet or device to circulate quickly to the outside.

[0053] Moreover, the fan assembly 300 may include a fan connecting frame 320 connected to the valve seat 210, and an electric fan 310 disposed on the fan connecting frame 320, wherein the electric fan 310 and the valve body assembly 100 are located on the same side of the valve seat 210. The electric fan 310 is mounted and fixed on the valve seat 210 through the fan connecting frame 320, so that the electric fan 310, the valve body assembly 100, and the valve assembly 200 are integrated to facilitate installation and maintenance.

[0054] Further, the fan connecting frame 320 may include a plurality of connecting rods 322 protruding around the end surface of the electric fan 310, and the plurality of connecting rods 322 are all connected to the valve seat 210. It is simple and convenient to connect the electric fan 310 and the valve seat 210 through the plurality of connecting rods 322. Moreover, an installation cavity is formed between the plurality of connecting rods 322, the valve body assembly 100 may be located in the installation cavity, and the installation cavity is connected to the air vent 202. In this way, not only can the valve body assembly 100 be protected by the plurality of connecting rods 322, but also the overall structure can be made compact, and the gas inside the cabinet or the equipment is not affected from being connected to the outside through the installation cavity, the air vent 202, and the air permeable membrane 222.

[0055] In addition, the utility model can also provide an electrical device, including an electrical cabinet, and the above-mentioned electromagnetic explosion-proof valve 10 arranged on the cabinet wall of the electrical cabinet. Through the electromagnetic explosion-proof valve 10 installed on the cabinet wall of the electrical cabinet, the inside and outside of the electrical cabinet can be connected through the valve cover plate 220 with a breathable membrane 222 arranged on the electromagnetic explosion-proof valve 10, so that the gas flow inside and outside the electrical cabinet is realized, thereby balancing the air pressure inside and outside the electrical cabinet.

[0056] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0057] It should be noted that, in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0058] The above description is only a specific embodiment of the utility model, so that those skilled in the art can understand or implement the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the utility model described herein.

Claims

1. An electromagnetic explosion-proof valve, characterized in that: include: A valve body assembly, comprising a solenoid valve body, a solenoid push rod arranged on the solenoid valve body, and a valve body connector arranged on the explosion-proof valve body; as well as A valve assembly, comprising a valve seat connected to the valve body connector, and a valve cover plate corresponding to the valve seat, the valve cover plate being connected to the electromagnetic push rod, a vent being provided on the valve seat, and the valve cover plate being used to open the vent under the drive of the electromagnetic push rod; Wherein, a breathable membrane with breathable holes is provided on the valve cover plate, and the breathable membrane is arranged corresponding to the breathable opening.

2. The electromagnetic explosion-proof valve according to claim 1, characterized in that: The valve cover plate comprises a cover plate body matched with the valve seat, the cover plate body is provided with a cover plate opening corresponding to the air permeable opening, and the air permeable membrane is arranged at the cover plate opening of the cover plate body.

3. The electromagnetic explosion-proof valve according to claim 2, characterized in that: The cover plate body is provided with a plurality of cover plate openings, and each of the cover plate openings is correspondingly sealed with a piece of the breathable membrane; or, The cover plate body is configured as an annular cover plate, the cover plate opening is formed in the middle of the annular cover plate, and a piece of the air-permeable membrane is sealed at the cover plate opening.

4. The electromagnetic explosion-proof valve according to claim 2, characterized in that: The air permeable membrane is a polytetrafluoroethylene microporous membrane.

5. The electromagnetic explosion-proof valve according to claim 2, characterized in that: A ring-shaped cover plate protrusion is provided on one side of the cover plate body; The valve seat comprises a main seat body for connecting with a cabinet or equipment, one side of the main seat body is provided with an annular sealing groove, and the cover plate protrusion is snap-fitted with the sealing groove.

6. The electromagnetic explosion-proof valve according to claim 5, characterized in that: A seat groove communicating with the air vent is provided on one side of the main seat body, and the cover plate body is buckled in the seat groove; The sealing groove is arranged around the bottom surface of the seat body groove, a first sealing gasket is arranged in the sealing groove, and the cover plate protrusion is correspondingly matched with the first sealing gasket.

7. The electromagnetic explosion-proof valve according to any one of claims 1 to 6, characterized in that: The electromagnetic explosion-proof valve includes a fan assembly; The fan assembly comprises a fan connecting frame connected to the valve seat, and an electric fan arranged on the fan connecting frame. The electric fan and the valve body assembly are located on the same side of the valve seat.

8. The electromagnetic explosion-proof valve according to claim 7, characterized in that: The fan connecting frame includes a plurality of connecting rods arranged around the end surface of the electric fan, and the plurality of connecting rods are all connected to the valve seat; An installation cavity is formed between the plurality of connecting rods, the valve body assembly is located in the installation cavity, and the installation cavity is communicated with the air vent.

9. The electromagnetic explosion-proof valve according to any one of claims 1 to 6, characterized in that: The valve body connecting member comprises a valve body connecting plate arranged on the side surface of the solenoid valve body, and the end of the valve body connecting plate is detachably connected to the valve seat.

10. The electromagnetic explosion-proof valve according to any one of claims 1 to 6, characterized in that: An annular mounting protrusion is provided on one side of the valve seat, and a second sealing gasket is provided at the mounting protrusion.

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