Exhaust valve

Abstract

An exhaust valve comprises a valve body, a valve cover and a magnetic suction cup, the valve body is provided with a valve hole used for exhausting, the valve cover and the valve body can be sealed to block the valve hole, at least part of the valve cover is made of ferromagnetic materials, and the magnetic suction cup is installed on the valve body and comprises a coil and a magnetic piece. In the arrangement direction of the valve cover and the valve hole, the magnetic part and the valve cover are correspondingly arranged; the coil is matched with the magnetic part, and the magnetic part can magnetically attract the ferromagnetic material part of the valve cover due to power failure of the coil, so that the valve cover seals the valve hole; the magnetic piece can be demagnetized to release the magnetic attraction part when the coil is electrified, so that the valve cover opens the valve hole; in this way, sealing of the valve deck and the valve hole is achieved in a magnetic adsorption mode, the mechanical structure between the valve deck and the valve body can be simplified, and assembling of the exhaust valve is facilitated; and the coil is powered on to open the valve hole by the valve cover, and the coil is powered off to seal the valve hole by the valve cover, so that the valve hole can be kept in a normally closed state, and energy consumption can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of gas valves, and in particular to an exhaust valve. Background Art

[0002] Exhaust valves are generally used in energy storage equipment or high-power equipment, such as fire-fighting equipment or equipment that can produce smoke or toxic gases. Fire-fighting equipment will cause excessive temperature rise after a fire. The exhaust valve can open the valve hole to discharge high-temperature gas or ventilate when the temperature of the equipment is too high and needs to be cooled down, or the fire extinguishing device can extend from the open valve hole and act on the inside of the equipment, thereby reducing the temperature of the equipment and ensuring the normal operation of the equipment.

[0003] Conventional exhaust valves seal the valve cover and the valve body by pressing the valve cover, and then press the valve cover again to open the valve cover to discharge gas. Exhaust valves using this opening and closing method require a mechanical structure to be provided between the valve body and the valve cover to reliably connect the valve body and the valve cover. In order to improve the reliability of the exhaust valve, the mechanical structure connecting the valve body and the valve cover is usually more complicated. Utility Model Content

[0004] The present application provides an exhaust valve to solve the technical problem that the exhaust valve structure is relatively complicated.

[0005] According to the first aspect, an embodiment provides an exhaust valve, comprising:

[0006] a valve body having a valve hole for exhausting air;

[0007] a valve cover, capable of sealing with the valve body to block the valve hole, wherein at least a portion of the valve cover is made of ferromagnetic material;

[0008] A magnetic suction cup is installed on the valve body, and the magnetic suction cup includes a coil and a magnetic member; in the arrangement direction of the valve cover and the valve hole, the magnetic member and the valve cover are arranged correspondingly;

[0009] The coil is arranged in cooperation with the magnetic component. The magnetic component can magnetically attract the valve cover when the coil is powered off, so that the valve cover seals the valve hole; the magnetic component can also demagnetize and release the valve cover when the coil is powered on, so that the valve cover opens the valve hole.

[0010] In an optional embodiment, the valve cover includes a valve cover body and a magnetic attraction portion, the magnetic attraction portion is installed on the valve cover body, the magnetic attraction portion is made of ferromagnetic material, and the magnetic member can magnetically attract the magnetic attraction portion.

[0011] In an optional embodiment, the magnetic member includes a permanent magnet.

[0012] In an optional embodiment, the exhaust valve further includes a suction cup mounting seat, and the magnetic suction cup is connected to the valve body via the suction cup mounting seat;

[0013] The magnetic suction cup includes a coil box having an annular cavity and a positioning column located at the center of the annular cavity. The coil is located in the annular cavity and arranged around the positioning column. The magnetic member is fixed to the opening of the annular cavity toward the valve cover to attract the valve cover by magnetism.

[0014] In an optional embodiment, the valve body has a mounting hole or a mounting groove, and the magnetic suction cup is located in the mounting hole or the mounting groove; there are multiple valve holes, and the multiple valve holes are arranged around the mounting hole or the mounting groove, and the valve body has a connecting portion located between two adjacent valve holes, and the connecting portion is connected to the side wall of the mounting hole or the mounting groove.

[0015] In an optional embodiment, a mounting structure is provided on the side of the valve body facing the valve cover, and the exhaust valve includes a sealing ring, which is located in the mounting structure and is clamped between the valve cover and the valve body to eliminate a structural gap between the valve cover and the valve body.

[0016] In an optional embodiment, the sealing ring includes a first part and a second part which are connected to each other, the first part extends in a direction perpendicular to the arrangement direction of the valve body and the valve cover, and the first part is clamped between the valve body and the valve cover in the arrangement direction of the valve body and the valve cover; the second part extends in the arrangement direction of the valve body and the valve cover, and the second part is clamped between the valve body and the valve cover in a direction perpendicular to the arrangement direction of the valve body and the valve cover.

[0017] In an optional embodiment, the mounting structure includes a sink groove and a sealing groove, wherein the sealing groove is located at the connection position between the bottom wall and the side wall of the sink groove, the sink groove is used to accommodate at least a portion of the valve cover, and the sealing groove is used to install the sealing ring; in a plane perpendicular to the arrangement direction of the valve cover and the valve hole, one of the side walls of the sealing groove is located on the side of the side wall of the sink groove facing away from the valve hole.

[0018] In an optional embodiment, the valve cover has an outer side surface facing away from the valve body in the arrangement direction of the valve cover and the valve body, and the outer side surface is flush with the outer surface of the valve body.

[0019] In an optional embodiment, the exhaust valve includes an elastic component, which is installed on the valve body; the elastic component applies an elastic force to the valve cover to separate the valve cover from the valve body.

[0020] In an optional embodiment, the elastic component includes a fixing member, a plug and an elastic member located between the fixing member and the plug, the fixing member is fixed to the valve body, the valve body has a guide hole, and at least part of the elastic member and the plug are located in the guide hole; under the action of the elastic member, the plug can move along the guide hole to push the valve cover.

[0021] The exhaust valve according to the above embodiment includes a valve body, a valve cover and a magnetic suction cup. The valve body has a valve hole for exhausting air. The valve cover can be sealed with the valve body to block the valve hole. At least a part of the valve cover is made of ferromagnetic material. The magnetic suction cup is installed on the valve body, and the magnetic suction cup includes a coil and a magnetic part. In the arrangement direction of the valve cover and the valve hole, the magnetic part and the valve cover are arranged correspondingly. The coil and the magnetic part are arranged in coordination. The magnetic part can magnetically attract the ferromagnetic material part of the valve cover when the coil is powered off, so that the valve cover seals the valve hole. The magnetic part can also demagnetize and release the valve cover when the coil is powered on, so that the valve cover opens the valve hole. In this way, the sealing of the valve cover and the valve hole by magnetic adsorption can simplify the mechanical structure between the valve cover and the valve body, and facilitate the assembly of the exhaust valve. Moreover, the valve cover opens the valve hole when the coil is powered on, and seals the valve hole when the coil is powered off, so that the valve hole can be kept in a normally closed state, which helps to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an exhaust valve in an embodiment;

[0023] Figure 2 It is a schematic diagram of the assembly exploded structure of the exhaust valve in one embodiment;

[0024] Figure 3 Schematic diagram of the cross-sectional structure of an exhaust valve in an embodiment.

[0025] In the figure:

[0026] 1. Valve body; 11. Valve hole; 12. Mounting hole; 13. Sink; 14. Sealing groove; 15. Connecting part; 16. Guide hole; 2. Sealing ring; 21. First part; 22. Second part; 3. Sealing ring; 4. Valve cover; 41. Valve cover body; 42. Magnetic suction part; 5. Magnetic suction cup; 51. Coil box; 511. Ring cavity; 512. Positioning column; 513. Second through hole; 52. Magnetic member; 6. Suction cup mounting seat; 61. First through hole;

[0027] 7. Elastic component; 71. Fixing part; 72. Plug; 73. Elastic part. DETAILED DESCRIPTION

[0028] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0030] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0031] The present application discloses an exhaust valve, which includes a valve body 1, a valve cover 4 and a magnetic suction cup 5. The valve body 1 has a valve hole 11 for exhausting air. The valve cover 4 can be sealed with the valve body 1 to block the valve hole 11. At least a part of the valve cover 4 is made of ferromagnetic material. The magnetic suction cup 5 is installed on the valve body 1. The magnetic suction cup 5 includes a coil (not shown in the figure) and a magnetic member 52. In the arrangement direction of the valve cover 4 and the valve hole 11, the magnetic member 52 is arranged corresponding to the valve cover 4. The coil and the magnetic member 52 are arranged in coordination. The magnetic member 52 can magnetically attract the ferromagnetic material of the valve cover 4 when the coil is powered off, so that the valve cover 4 seals the valve hole 11. The magnetic member 52 can also be demagnetized and release the valve cover 4 when the coil is powered on, so that the valve cover 4 opens the valve hole 11.

[0032] In this way, the sealing of the valve cover 4 and the valve hole 11 by magnetic adsorption can simplify the mechanical structure between the valve cover 4 and the valve body 1, and facilitate the assembly of the exhaust valve; and the coil is energized to make the valve cover 4 open the valve hole 11, and the coil is de-energized to make the valve cover 4 seal the valve hole 11, which can keep the valve hole 11 in a normally closed state, and help reduce energy consumption.

[0033] Specifically, in one embodiment, please refer to Figures 1 to 3The valve body 1 is a plate-like structure, and the valve body 1 can be connected to the exhaust port of the energy storage device or the high-power device (not shown in the figure, the energy storage device and the high-power device are collectively referred to as the device below) through fasteners, and the valve hole 11 on the valve body 1 is connected to the exhaust port of the device.

[0034] In one embodiment, please refer to Figure 2 and Figure 3 The valve hole 11 is a circular hole, and the valve cover 4 is a circular plate-shaped structure sealed with the valve body 1 to block the valve hole 11. The valve cover 4 includes a valve cover body 41 and a magnetic attraction portion 42. The magnetic attraction portion 42 is installed on the valve cover body 41 and is located on the side of the valve cover body 41 facing the valve hole 11. The magnetic attraction portion 42 is made of ferromagnetic material, and the ferromagnetic material includes iron, cobalt, nickel and its alloys and ferrite, etc., and the valve cover body 41 can be made of high-temperature resistant plastic or lightweight aluminum alloy. The magnetic attraction portion 42 is installed at the center position of the circular valve cover body 41 by screws, and the magnetic attraction portion 42 is arranged corresponding to the magnetic part 52 in the arrangement direction of the valve cover 4 and the valve hole 11, so that it is convenient to adsorb the magnetic attraction portion 42 through the magnetic part 52; and the valve cover body 41 and the magnetic attraction portion 42 are separated in the valve cover 4, which helps to reduce the weight of the entire valve cover 4 and can also reduce the cost of the entire exhaust valve.

[0035] In another embodiment, in order to reduce the number of parts of the exhaust valve and facilitate assembly of the exhaust valve, the valve cover 4 is configured as an integrated structure, the valve cover 4 is made of ferromagnetic material as a whole, and the valve cover 4 cooperates with the magnetic member 52 as a whole.

[0036] It should be noted that the arrangement direction of the valve cover 4 and the valve hole 11 is Figures 1 to 3 The direction of the arrow in FIG. 1 is the direction in which the valve cover 4 moves relative to the valve body 1 when the valve hole 11 is opened or sealed.

[0037] In one embodiment, the valve body 1 has a mounting hole 12, which is used to install the magnetic suction cup 5. There are multiple valve holes 11, and the multiple valve holes 11 are arranged around the mounting hole 12. In the circumferential direction around the mounting hole 12, the valve body 1 has a connecting portion 15 located between two adjacent valve holes 11, and the connecting portion 15 is connected to the side wall of the mounting hole 12.

[0038] For example, four valve holes 11 can be provided, and the four valve holes 11 and the mounting hole 12 are all used to communicate with the exhaust port on the equipment. The magnetic suction cup 5 is located in the mounting hole 12 and is located at the center position surrounding the multiple valve holes 11. This can avoid staggering the magnetic suction cup 5 and the exhaust port to increase the size of the entire valve body 1.

[0039] Of course, in other embodiments, in order to increase the size of the valve hole 11 , the magnetic suction cup 5 and the exhaust port may be staggered in a plane perpendicular to the arrangement direction of the valve cover 4 and the valve hole 11 , but this will increase the size of the valve cover 4 .

[0040] In one embodiment, please refer to Figures 1 to 3 The exhaust valve also includes a suction cup mounting seat 6, which is located on the side of the valve body 1 facing away from the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11. The suction cup mounting seat 6 is located at the position of the mounting hole 12 in a plane perpendicular to the arrangement direction of the valve cover 4 and the valve hole 11. The suction cup mounting seat 6 is mounted on the hole wall of the mounting hole 12 by fasteners, so that the suction cup mounting seat 6 and the mounting position are enclosed to form a receiving groove, and the magnetic suction cup 5 is located in the receiving groove.

[0041] The magnetic suction cup 5 is connected to the valve body 1 through the suction cup mounting seat 6. Specifically, the magnetic suction cup 5 includes a coil box 51, which is connected to the suction cup mounting seat 6 through a fastener to fix the position of the coil box 51 in the receiving groove; the coil box 51 has an annular cavity 511 and a positioning column 512 located at the center of the annular cavity 511, the coil is arranged around the positioning column 512, and the coil is located in the annular cavity 511, so that the position of the coil in the coil box 51 is conveniently fixed.

[0042] The suction cup mounting seat 6 has a wire outlet hole, so that the coil can be passed through the wire outlet hole to be electrically connected to the external power supply. The mounting hole 12 is a round hole, and the suction cup mounting seat 6 also has a first through hole 61 corresponding to the center position of the mounting hole 12. The positioning column 512 of the coil box 51 has a second through hole 513 extending in the arrangement direction of the valve cover 4 and the valve hole 11. The first through hole 61 is connected to the second through hole 513, so that the exhaust valve can also exhaust through the first through hole 61 and the second through hole 513.

[0043] In one embodiment, the annular cavity 511 has an opening facing the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11, and the magnetic member 52 includes a permanent magnet, which is generally an annular sheet structure. The magnetic member 52 is fixed to the opening of the annular cavity 511, so as to contact the valve cover 4 and attract the valve cover 4 by magnetism. For example, the permanent magnet can be installed at the opening of the annular cavity 511 of the coil box 51 by interference fit, so as to achieve a fixed connection between the magnetic member 52 and the coil box 51. Of course, in other embodiments, the magnetic member 52 also includes a fastener, and the permanent magnet can also be fixed to the positioning column 512 by the fastener to achieve a fixed connection between the magnetic member 52 and the coil box 51.

[0044] When the coil is powered off, the magnetic attraction part 42 can be attracted by the magnetism of the permanent magnet to make the valve cover 4 seal the valve hole 11; when the coil is powered on, the magnetism of the permanent magnet can be offset to demagnetize the permanent magnet, so that there is no magnetic attraction between the permanent magnet and the magnetic attraction part 42, the magnetic attraction part 42 is separated from the permanent magnet, and the valve cover 4 opens the valve hole 11.

[0045] Of course, in other embodiments, the suction cup mounting base 6 may not be provided in the exhaust valve, and the mounting hole 12 on the valve body 1 is provided as a receiving groove, the notch of the receiving groove faces the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11, and the coil box 51 is cancelled in the magnetic suction cup 5. The coil is located in the receiving groove, and the position of the coil can be fixed by providing a positioning column 512 on the bottom wall of the receiving groove. The magnetic member 52 includes a permanent magnet with a circular sheet structure, and the permanent magnet is fixedly installed in the notch of the receiving groove. This can reduce the number of components in the exhaust valve and facilitate the assembly of the exhaust valve.

[0046] In one embodiment, please refer to Figure 2 A sealing ring 3 is provided on one side of the thickness direction of the plate structure of the valve body 1. After the valve body 1 is fixedly connected to the equipment, the valve body 1 can be sealed with the equipment through the sealing ring 3 to prevent gas leakage from between the housing of the equipment and the valve body 1. The other side of the plate structure of the valve body 1 in the thickness direction is sealed with the valve cover 4.

[0047] Please refer to Figure 3 A mounting structure is provided on the side of the valve body 1 facing the valve cover 4. The exhaust valve includes a sealing ring 2. The sealing ring 2 is located in the mounting structure. When the valve cover 4 seals the valve hole 11, the sealing ring 2 is clamped between the valve cover 4 and the valve body 1 to eliminate the structural gap between the valve cover 4 and the valve body 1.

[0048] In another embodiment, the valve cover body 41 in the valve cover 4 can also be made of rubber material. The valve cover body 41 has an annular sealing ridge arranged around the valve hole 11. After the magnetic suction cup 5 magnetically absorbs the magnetic suction part 42, the sealing ridge is sealed and pressed on the valve body 1 to eliminate the structural gap between the valve body 1 and the valve cover 4, thereby achieving the sealing of the valve hole 11.

[0049] In one embodiment, please continue to refer to Figure 2 The mounting structure includes a recessed groove 13 provided on the valve body 1, the recessed groove 13 is a circular groove, the notch of the recessed groove 13 faces the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11, and at least part of the valve cover 4 is located in the recessed groove 13. The mounting structure also includes a sealing groove 14 provided on the groove wall of the recessed groove 13, and the sealing ring 2 is installed in the sealing groove 14.

[0050] The single-side radial cross section of the sealing ring 2 is generally L-shaped. The sealing ring 2 includes a first portion 21 and a second portion 22 connected to each other. The first portion 21 corresponds to the horizontal section of the L-shape. The first portion 21 is extended in the radial direction of the valve cover 4 and fits with the bottom wall of the sealing groove 14. The second portion 22 corresponds to the vertical section of the L-shape. The second portion 22 is extended in the axial direction of the valve cover 4 and fits with the side wall of the sealing groove 14. When the valve cover 4 seals the valve hole 11, the sealing ring 2 The first part 21 is fitted with the axial end face of the valve cover 4 facing the valve body 1, and the first part 21 is pressed between the valve cover 4 and the valve body 1 in the arrangement direction of the valve cover 4 and the valve hole 11, that is, in the axial direction of the valve cover 4, and the second part 22 is fitted with the outer peripheral surface of the valve cover 4, and the second part 22 is pressed between the valve cover 4 and the valve body 1 in the radial direction of the valve cover 4. In this way, the sealing cooperation between the valve cover 4 and the valve body 1 in the radial direction and the axial direction of the valve cover 4 is realized by the sealing ring 2, so that the sealing performance of the valve cover 4 and the valve body 1 can be improved.

[0051] The sealing ring 2 is a circular ring structure, and the radial inner side surface of the second part 22 on the sealing ring 2 is a guide surface, which is a part of the conical surface. The radial dimension of the guide surface gradually decreases from the valve cover 4 to the valve body 1 in the arrangement direction of the valve cover 4 and the valve hole 11. Correspondingly, the outer peripheral surface of the valve cover 4 is also a part of the conical surface. The outer peripheral surface of the valve cover 4 cooperates with the radial inner side surface of the second part 22 to facilitate the valve cover 4 to be covered in the recessed groove 13 of the valve body 1, and to facilitate the valve cover 4 to cooperate with the sealing ring 2.

[0052] In another embodiment, in order to reduce the cost of the sealing ring 2 and the entire exhaust valve, the single-side radial cross-section of the sealing ring 2 can also be set to a circular shape. When the valve cover 4 seals the valve hole 11, the sealing ring 2 only seals against the axial end face of the valve cover 4.

[0053] In one embodiment, please refer to Figure 3 The sealing ring 2 with an L-shaped radial cross-section on one side is installed in the sealing groove 14 on the groove wall of the groove 13. The sealing groove 14 is located at the connection position between the groove side wall and the groove bottom wall of the groove 13. The maximum outer diameter of the sealing groove 14 is larger than the outer diameter of the groove 13, and the radial dimension of one of the groove side walls of the sealing groove 14 is larger than the outer diameter of the groove 13. In this way, the sealing ring 2 is embedded in the valve body 1 in its radial direction, and the portion of the valve body 1 extending toward the radial inner side of the groove 13 at the notch position of the groove 13 can be abutted against the second portion 22 of the sealing ring 2 in the arrangement direction of the valve cover 4 and the valve hole 11 to limit the sealing ring 2 from coming out of the valve body 1.

[0054] Of course, in some other embodiments, the mounting groove may be only arranged on the bottom wall of the groove 13, and the radial outer groove wall of the mounting groove is coplanar with the groove wall of the groove 13, so that the sealing ring 2 is embedded in the valve body 1 only in the arrangement direction of the valve cover 4 and the valve hole 11, that is, in the axial direction of the sealing ring 2, to facilitate the installation of the sealing ring 2 in the sealing groove 14.

[0055] In another embodiment, the sealing groove 14 may be eliminated from the installation structure, the sealing ring 2 is located in the sink groove 13, the first portion 21 of the sealing ring 2 is in contact with the bottom wall of the sink groove 13, and the second portion 22 is in contact with the side wall of the sink groove 13. The side wall surface of the sink groove 13 is a portion of a conical surface, the radial dimension of the sink groove 13 at the notch is greater than the radial dimension of the bottom of the sink groove 13, and the outer peripheral surface of the second portion 22 may be a portion of a conical surface in contact with the side wall surface of the sink groove 13, so that the sealing ring 2 can be easily installed in the sink groove 13.

[0056] In one embodiment, please refer to Figure 3 The valve cover 4 is entirely located in the sink 13, and the outer side surface of the valve cover 4 facing away from the valve body 1 is flush with the outer surface of the valve body 1 facing away from the equipment shell in its thickness direction. This ensures the flatness of the outer surface of the exhaust valve when the valve hole 11 is in a sealed state, thereby improving the appearance of the exhaust valve.

[0057] Of course, under the condition of limited machining accuracy, the outer side surface of the valve cover 4 facing away from the valve body 1 can also be located in the recessed groove 13 and lower than the notch of the recessed groove 13 .

[0058] Or in some other embodiments, part of the valve cover 4 is located in the sink 13 , and the outer side surface of the valve cover 4 facing away from the valve body 1 is protruded from the outer surface of the valve body 1 .

[0059] In one embodiment, the exhaust valve includes an elastic component 7, which is installed on the valve body 1. The elastic component 7 can apply an elastic force to the valve cover 4 to separate the valve cover 4 from the valve body 1; the valve body 1 is provided with a guide hole 16 on each connecting portion 15, which penetrates the valve body 1 in the arrangement direction of the valve cover 4 and the valve hole 11. A plurality of elastic components 7 are provided, and the elastic components 7 correspond to the connecting portions 15 and the guide holes 16 one by one, and each elastic component 7 is located at the corresponding guide hole 16 position on the valve body 1.

[0060] The elastic component 7 includes a fixing member 71, a plug 72 and an elastic member 73 located between the fixing member 71 and the plug 72. The elastic member 73 can be a spring whose axis extends in the arrangement direction of the valve cover 4 and the valve hole 11, or a rubber spring with a large deformation amount in the arrangement direction of the valve cover 4 and the valve hole 11. The fixing member 71 can be a fixing plate or a fixing block. The fixing member 71 is located on the side of the valve body 1 that is away from the valve cover 4. A recess can be provided on the valve body 1, and the fixing member 71 is located in the recess to prevent the fixing member 71 from protruding from the valve body 1 and affecting the sealing of the valve body 1 and the equipment. At least a part of the fixing member 71 is located on the side of the guide hole 16 that is away from the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11. The elastic member 73 is located in the guide hole 16, so that the fixing member 71 can limit the elastic member 73 from escaping from the guide hole 16 from the side of the valve body 1 that is away from the valve cover 4.

[0061] The guide hole 16 is a circular hole, and the plug 72 includes a cylindrical structure and a radial protrusion located in the axial middle position of the cylindrical structure. The radial protrusion protrudes from the outer side surface of the cylindrical structure in the radial direction of the cylindrical structure. The opening of the guide hole 16 on the valve cover 4 side is provided with a flange protruding radially toward the hole. The plug 72 can be inserted into the guide hole 16 from the opening on the side of the guide hole 16 facing away from the valve cover 4. The plug 72 is abutted against the flange in the guide hole 16 by its radial protrusion in the arrangement direction of the valve cover 4 and the valve hole 11 to limit the plug 72 from escaping from the opening of the guide hole 16 on the side facing the valve cover 4.

[0062] The plug 72 can reciprocate in the guide hole 16 along the axial direction of the guide hole 16, that is, along the arrangement direction of the valve cover 4 and the valve hole 11. The elastic member 73 is located between the plug 72 and the fixing member 71. The elastic member 73 can apply an elastic force to the plug 72 to move the plug 72 toward the valve cover 4; in this way, after the magnetic member 52 is demagnetized and the magnetic attraction portion 42 is released, the elastic force of the elastic member 73 drives the plug 72 to move toward the valve cover 4 so that the plug 72 presses against the valve cover 4, prompting the valve cover 4 to move away from the valve body 1 in the arrangement direction of the valve cover 4 and the valve hole 11, thereby realizing the separation of the valve body 1 and the valve cover 4 and the opening of the valve hole 11.

[0063] In some other embodiments, the elastic component 7 may also only include an elastic member 73, which is deformed in the arrangement direction of the valve cover 4 and the valve hole 11. One end of the elastic member 73 is fixed to the valve body 1, and the other end protrudes toward the valve cover 4 to abut against the valve cover 4 in the arrangement direction of the valve cover 4 and the valve hole 11. The elastic member 73 can abut against the valve cover 4 after the magnetic member 52 is demagnetized and the magnetic attraction portion 42 is released, so that the valve cover 4 is away from the valve body 1.

[0064] In another embodiment, the elastic component 7 may not be provided in the exhaust valve. After the exhaust valve is installed on the equipment housing, the valve cover 4 is located at the lower side of the valve body 1 in the gravity direction, so that after the magnetic member 52 is demagnetized and the magnetic attraction portion 42 is released, the valve cover 4 moves away from the valve body 1 under its own gravity to open the valve hole 11. Of course, a pull rope may be provided between the valve body 1 and the valve cover 4 to prevent the valve cover 4 from being separated from the valve body 1 by a large distance. In this structure, when the valve hole 11 is sealed, the valve cover 4 needs to be aligned with the sink 13 by external force, so as to facilitate the sealing of the valve cover 4 and the valve body 1.

[0065] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An exhaust valve, characterized in that: include: a valve body having a valve hole for exhausting air; a valve cover, capable of sealing with the valve body to block the valve hole, wherein at least a portion of the valve cover is made of ferromagnetic material; A magnetic suction cup is installed on the valve body, and the magnetic suction cup includes a coil and a magnetic member; in the arrangement direction of the valve cover and the valve hole, the magnetic member and the valve cover are arranged correspondingly; The coil is arranged in cooperation with the magnetic component. The magnetic component can magnetically attract the valve cover when the coil is powered off, so that the valve cover seals the valve hole; the magnetic component can also demagnetize and release the valve cover when the coil is powered on, so that the valve cover opens the valve hole.

2. The exhaust valve according to claim 1, characterized in that The valve cover comprises a valve cover body and a magnetic attraction portion, wherein the magnetic attraction portion is mounted on the valve cover body, the magnetic attraction portion is made of ferromagnetic material, and the magnetic member can magnetically attract the magnetic attraction portion.

3. The exhaust valve according to claim 1, characterized in that The magnetic member includes a permanent magnet.

4. The exhaust valve according to claim 1, characterized in that The exhaust valve further comprises a suction cup mounting seat, and the magnetic suction cup is connected to the valve body via the suction cup mounting seat; The magnetic suction cup includes a coil box having an annular cavity and a positioning column located at the center of the annular cavity. The coil is located in the annular cavity and arranged around the positioning column. The magnetic member is fixed to the opening of the annular cavity toward the valve cover to attract the valve cover by magnetism.

5. The exhaust valve according to claim 1, characterized in that The valve body has a mounting hole or a mounting groove, and the magnetic suction cup is located in the mounting hole or the mounting groove; there are multiple valve holes, and the multiple valve holes are arranged around the mounting hole or the mounting groove, and the valve body has a connecting part located between two adjacent valve holes, and the connecting part is connected to the side wall of the mounting hole or the mounting groove.

6. The exhaust valve according to claim 1, characterized in that A mounting structure is provided on one side of the valve body facing the valve cover. The exhaust valve comprises a sealing ring, which is located in the mounting structure and is clamped between the valve cover and the valve body to eliminate a structural gap between the valve cover and the valve body.

7. The exhaust valve according to claim 6, characterized in that The sealing ring includes a first part and a second part which are connected to each other, the first part extending in a direction perpendicular to the arrangement direction of the valve body and the valve cover, and the first part being clamped between the valve body and the valve cover in the arrangement direction of the valve body and the valve cover; the second part extending in the arrangement direction of the valve body and the valve cover, and the second part being clamped between the valve body and the valve cover in a direction perpendicular to the arrangement direction of the valve body and the valve cover.

8. The exhaust valve according to claim 6, characterized in that The mounting structure comprises a sink groove and a sealing groove, wherein the sealing groove is located at the connection position between the bottom wall and the side wall of the sink groove, the sink groove is used to accommodate at least part of the valve cover, and the sealing groove is used to install the sealing ring; In a plane perpendicular to the arrangement direction of the valve cover and the valve hole, one of the groove side walls of the sealing groove is located on a side of the groove side wall of the sink groove facing away from the valve hole.

9. The exhaust valve according to claim 1, characterized in that The exhaust valve comprises an elastic component, wherein the elastic component is mounted on the valve body; the elastic component applies an elastic force to the valve cover to separate the valve cover from the valve body.

10. The exhaust valve according to claim 9, characterized in that The elastic component includes a fixing member, a plug and an elastic member located between the fixing member and the plug, wherein the fixing member is fixed to the valve body, the valve body has a guide hole, and at least parts of the elastic member and the plug are located in the guide hole; under the action of the elastic member, the plug can move along the guide hole to push the valve cover.

Images