Automatic air valve and air compressor heat dissipation system

Abstract

The embodiment of the present application provides an automatic air valve and an air compressor heat dissipation system. The automatic air valve comprises a valve body, a valve core unit and a stopper. The valve body is arranged in a vertically arranged connecting pipe. The valve body is provided with a ventilation hole. The valve core unit comprises a rotating shaft and a blade. The two ends of the rotating shaft are connected to the valve body. The blade is connected to the rotating shaft. The blade is configured to rotate relative to the valve body to open the ventilation hole under the action of hot gas entering the connecting pipe. When the hot gas stops entering the connecting pipe, the blade rotates relative to the valve body under the action of gravity to close the ventilation hole. The stopper is configured to abut against the blade when the blade opens the ventilation hole, so as to limit the blade in the current position. The automatic air valve can realize automatic opening and closing, and solves the problem that air valve leakage or opening affects air compressor heat dissipation.

Description

Technical Field

[0001] This application relates to the field of ventilation system technology, and in particular to an automatic air valve and an air compressor heat dissipation system. Background Technology

[0002] The air compressor room in a factory typically houses multiple air compressors. These compressors are connected to the same duct via connecting pipes. This allows hot air generated by the cooling system during compressor operation to be delivered through the connecting pipes into the duct and then discharged outside the compressor room, thus reducing the compressor's operating temperature. Furthermore, the connecting pipes usually contain dampers. When any air compressor is running, its corresponding damper is opened to allow it to connect to the duct via the connecting pipe. When any air compressor is stopped, its corresponding damper is closed to disconnect it from the duct, preventing hot air generated by other equipment (such as other air compressors) from flowing back into the stopped compressor and affecting its cooling during shutdown.

[0003] The air valve can be manual or electric. However, both manual and electric air valves require manual control to open or close, which may result in the air valve being left open or closed, thus affecting the operation and heat dissipation of the air compressor. Utility Model Content

[0004] This application provides an automatic air valve and an air compressor heat dissipation system to prevent the air valve from being left open or closed, thus affecting the heat dissipation of the air compressor.

[0005] In a first aspect, this application provides an automatic damper, comprising:

[0006] A valve body is used for installation inside a vertically arranged connecting pipe, and the valve body has ventilation holes;

[0007] The valve core unit includes a rotating shaft and blades. The two ends of the rotating shaft are connected to the valve body, and the blades are connected to the rotating shaft. The blades are configured to rotate relative to the valve body under the action of hot gas entering the connecting pipe to open the ventilation hole; when the hot gas stops entering the connecting pipe, the blades rotate relative to the valve body under the action of gravity to close the ventilation hole.

[0008] A stop member, fixed inside the connecting pipe or on the valve body, is configured to abut against the blade when the blade opens the ventilation hole, thereby restricting the blade to its current position.

[0009] Optionally, two blades are provided on the same rotating shaft, the two blades rotate in opposite directions, and the two blades together close or open the ventilation hole.

[0010] Optionally, the stop member includes a connecting part and a stop part that are fixed to each other. The connecting part is fixed to the valve body. When the blade opens the ventilation hole, the two ends of the stop part abut against the two blades on the same rotating shaft.

[0011] Optionally, the automatic damper further includes a seal disposed on at least one of the valve body or the blade, which seals the gap between the blade and the valve body when the blade closes the ventilation hole.

[0012] Optionally, the valve body includes a cylinder and a support member. The cylinder is used to be fixedly connected to the connecting pipe. A vertically arranged ventilation hole is formed inside the cylinder. The support member is fixed to the inner wall of the ventilation hole. When the blade closes the ventilation hole, the blade overlaps the support member. The sealing member is sealed between the support member and the blade.

[0013] Optionally, there are multiple valve core units and multiple support members, with the multiple support members arranged in parallel and one valve core unit arranged between every two support members.

[0014] Optionally, at least one of the support member and the blade is provided with a groove, and the seal member is installed in the groove.

[0015] Optionally, the valve core unit further includes a sleeve, which is sleeved on the rotating shaft, and the blade is fixedly connected to the sleeve.

[0016] Optionally, at least two spaced sleeves are connected to the same blade, and the sleeves on two blades on the same rotating shaft are alternately arranged.

[0017] Secondly, this application provides an air compressor heat dissipation system, including multiple air compressors, multiple connecting pipes and air ducts, each of the air compressors being connected to a connecting pipe, the connecting pipes being vertically arranged, all the connecting pipes being connected to the air ducts, and each of the connecting pipes being provided with the aforementioned automatic air valve.

[0018] The beneficial effect of this application is that the automatic air valve and air compressor cooling system provided herein, by setting a rotating shaft and blades, allows the hot air generated by the air compressor to enter the connecting pipe. If the ventilation hole is closed by the blades, the hot air will exert an upward thrust on the blades. When the thrust exerted by the hot air on the blades exceeds the weight of the blades, the blades are pushed and rotated relative to the valve body via the rotating shaft, thereby opening the ventilation hole and allowing the hot air generated by the air compressor to be discharged into the air duct. In this current position, when the air compressor stops running, the air compressor fan stops working, and the flow rate and pressure of the hot air supplied to the connecting pipe by the air compressor decrease. This reduces the thrust exerted by the hot air on the blades, and the weight of the blades exceeds the thrust exerted by the hot air, causing the blades to fall downwards under the action of gravity, thereby closing the ventilation hole. In this way, the ventilation hole automatically opens after the air compressor starts and automatically closes after the air compressor stops. This avoids the possibility of incomplete opening or closing. Furthermore, when the blades open the ventilation holes, they come into contact with a stop, which restricts the rotation angle of the blades. The maximum rotation angle of the blades is the position where the blades come into contact with the stop. This ensures that after the flow and pressure of the hot air are reduced, the blades will inevitably fall downwards, preventing the blades from failing to close automatically. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 A partial structural schematic diagram of the air compressor heat dissipation system provided in this application;

[0021] Figure 2 A schematic diagram of the structure of the automatic air valve provided in this application installed in the air duct;

[0022] Figure 3 for Figure 2 Top view;

[0023] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure;

[0024] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0025] Figure 6 for Figure 5 A magnified view of a section at point B.

[0026] Figure label:

[0027] 100-Automatic Air Valve;

[0028] 110 - Valve body; 111 - Ventilation hole; 112 - Cylinder body; 113 - Support component;

[0029] 120 - Valve core unit; 121 - Rotating shaft; 122 - Blade; 1221 - First blade; 1222 - Second blade; 123 - Sleeve; 1231 - First sleeve; 1232 - Second sleeve; 124 - Shaft sleeve;

[0030] 130 - Stop; 131 - Connecting part; 132 - Stop;

[0031] 140 - Seal;

[0032] 150-groove;

[0033] 200-Air compressor;

[0034] 310 - Connecting pipe; 320 - Air duct.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In related technologies, multiple air compressors are typically installed in the air compressor room of a factory, operating alternately to prevent overheating caused by prolonged operation of the same air compressor. The heat generated by the air compressors is blown away by fans, forming hot air. Furthermore, to ensure the hot air generated by the air compressors is expelled from the air compressor room, the multiple air compressors are connected to the same duct via connecting pipes, and each connecting pipe is equipped with an air valve. When any air compressor starts, the air valve on the connecting pipe corresponding to that air compressor needs to be manually opened, allowing the hot air generated by that air compressor to reach the duct via the connecting pipe and then be discharged outside the air compressor room. When any air compressor stops, the air valve on the connecting pipe corresponding to that air compressor needs to be manually closed to prevent the hot air generated by other operating air compressors from flowing back into the stopped air compressor via the duct and connecting pipes, thus affecting the natural cooling of the stopped air compressor.

[0038] Based on the above scenarios, it can be seen that in the existing technology, both manual and electric air valves have technical problems of leakage in opening or closing.

[0039] This application provides an automatic air valve and an air compressor cooling system. When the air compressor is running, the air valve is opened by the hot air generated during the operation of the air compressor. When the air compressor stops running, the air valve is closed by gravity, realizing the automatic opening and closing of the air valve and solving the technical problem that existing air valves are prone to leakage.

[0040] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0041] like Figures 1 to 6 As shown, the automatic air valve 100 provided in this application embodiment includes a valve body 110, a valve core unit 120, and a stop member 130.

[0042] The valve body 110 is used to be installed in the vertically arranged connecting pipe 310, and the valve body 110 has a ventilation hole 111.

[0043] The valve core unit 120 includes a rotating shaft 121 and a blade 122. The two ends of the rotating shaft 121 are connected to the valve body 110, and the blade 122 is connected to the rotating shaft 121. The blade 122 is configured to rotate relative to the valve body 110 under the action of hot gas entering in the connecting pipe 310 to open the ventilation hole 111; when the hot gas stops entering in the connecting pipe 310, the blade 122 rotates relative to the valve body 110 under the action of gravity to close the ventilation hole 111.

[0044] The stop 130 is fixed inside the connecting pipe 310 or on the valve body 110. The stop 130 is configured to abut against the blade 122 when the blade 122 opens the ventilation hole 111, so as to restrict the blade 122 to the current position.

[0045] It is understood that the lower end of the connecting pipe 310 is connected to the air compressor 200, and the upper end of the connecting pipe 310 is connected to the air duct 320. When the vent 111 is open, the air compressor 200 and the air duct 320 are in a connected state, and gas can flow between the air compressor 200 and the air duct 320. When the vent 111 is closed, the air compressor 200 and the air duct 320 are disconnected, and gas cannot flow between the air compressor 200 and the air duct 320. The rotating shaft 121 can rotate relative to the valve body 110, and drive the blade 122 to rotate relative to the valve body 110.

[0046] In the above technical solution, by setting the rotating shaft 121 and the blades 122, when the hot air generated by the air compressor 200 enters the connecting pipe 310, if the vent 111 is closed by the blades 122, the hot air will exert an upward thrust on the blades 122. When the thrust exerted by the hot air on the blades 122 is greater than the weight of the blades 122, the blades 122 are pushed and rotate relative to the valve body 110 through the rotating shaft 121, thereby opening the vent 111 and allowing the hot air generated by the air compressor 200 to be discharged into the duct 320. In this current position, when the air compressor 200 stops running, the fan of the air compressor 200 no longer works, and the flow rate and pressure of the hot air supplied by the air compressor 200 to the connecting pipe 310 decrease. This reduces the thrust exerted by the hot air on the blades 122, and the weight of the blades 122 is greater than the thrust exerted by the hot air, causing the blades 122 to fall downwards under the action of gravity, thereby closing the vent 111. This ensures that the vent 111 automatically opens when the air compressor 200 starts and automatically closes when the air compressor 200 shuts down. This prevents any missed opening or closing. Furthermore, when the blade 122 opens the vent 111, it abuts against the stop 130, which limits the rotation angle of the blade 122. The maximum rotation angle of the blade 122 is the position where it abuts against the stop 130. This ensures that after reducing the flow and pressure of the hot air, the blade 122 will inevitably fall downwards. This prevents the blade 122 from rotating to an angle where it cannot fall downwards due to gravity, such as when the center of gravity of the blade 122 is in the same vertical direction as the axis of the rotating shaft 121.

[0047] like Figure 3 As shown, in some optional embodiments, two blades 122 are provided on the same rotating shaft 121. The two blades 122 rotate in opposite directions and the two blades 122 together close or open the ventilation hole 111.

[0048] It can be understood that the two blades 122 on the same rotating shaft 121 rotate in opposite directions. This means that during the opening of the ventilation hole 111, the two blades 122 rotate in opposite directions, and during the closing of the ventilation hole 111, the two blades 122 also rotate in opposite directions. In this way, since each blade 122 rotates independently, each blade 122 can open the ventilation hole 111 with less hot air pushing force, thereby improving the opening sensitivity of the air valve.

[0049] It should be noted that in this embodiment, regardless of whether the ventilation hole 111 is open or closed, the two blades 122 on the same rotating shaft 121 are located on opposite sides of the rotating shaft 121. Thus, when the ventilation hole 111 is opened or closed, the two blades 122 on the same rotating shaft 121 rotate in opposite directions. Figure 5As shown, the two blades 122 on the same rotating shaft 121 are the first blade 1221 and the second blade 1222, respectively. When the ventilation hole 111 is closed, the first blade 1221 and the second blade 1222 are located on both sides of the rotating shaft 121.

[0050] like Figure 5 As shown, in some optional embodiments, the stop member 130 includes a connecting part 131 and a stop part 132 that are fixed to each other. The connecting part 131 is fixed to the valve body 110. When the blade 122 opens the ventilation hole 111, the two ends of the stop part 132 respectively abut against the two blades 122 on the same rotating shaft 121.

[0051] It is understood that the stop part 132 is fixed to the valve body 110 via the connecting part 131. By providing connecting parts 131 of different shapes or sizes, the relative position between the stop part 132 and the valve body 110 can be adjusted. The two ends of the stop part 132 are respectively located on the rotation paths of the two blades 122, so that the two ends of the stop part 132 can respectively abut and limit the contact of the two blades 122. In this way, the contact and limiting of the two blades 122 is achieved through a single stop part 130, simplifying the number of stop parts 130 and making the structure of the automatic damper 100 more compact.

[0052] In some alternative embodiments, both the connecting portion 131 and the stop portion 132 are strip-shaped structures, and after the connecting portion 131 and the stop portion 132 are fixed, they form a T-shaped stop member 130.

[0053] In some alternative embodiments, the automatic damper 100 further includes a seal 140 disposed on at least one of the valve body 110 or the blade 122, which seals the gap between the blade 122 and the valve body 110 when the blade 122 closes the vent 111.

[0054] By setting the sealing element 140, the gap between the blade 122 and the valve body 110 can be sealed when the ventilation hole 111 is closed, so as to avoid the gap still existing after the ventilation hole 111 is closed, which would prevent the pipe sections of the connecting pipe 310 on both sides of the automatic air valve 100 from being completely isolated.

[0055] like Figure 2 and Figure 3 As shown, in some optional embodiments, the valve body 110 includes a cylinder 112 and a support member 113. The cylinder 112 is used to be fixedly connected to the connecting pipe 310. A vertically arranged ventilation hole 111 is formed inside the cylinder 112. The support member 113 is fixed to the inner wall of the ventilation hole 111. When the blade 122 closes the ventilation hole 111, the blade 122 overlaps the support member 113. The sealing member 140 is sealed between the support member 113 and the blade 122.

[0056] It is understandable that, since the blade 122 overlaps the support 113 when the vent 111 is closed, the support 113 is located on the rotation path of the blade 122, and the support 113 can support and limit the blade 122, so that the blade 122 is fixed in the position where the vent 111 is closed. The seal 140 is sealed between the support 113 and the blade 122, thus sealing the gap between the support 113 and the blade 122.

[0057] It should be noted that the fixed connection methods between the cylinder 112 and the connecting pipe 310 include, but are not limited to, welding, bonding or bolting.

[0058] In some alternative embodiments, when the blade 122 closes the vent 111, the seal 140 can be pressed between the blade 122 and the support 113, so that the weight of the blade 122 can act on the seal 140, allowing the seal 140 to fit better between the blade 122 and the support 113, thereby achieving a better seal.

[0059] In some alternative embodiments, the seal 140 may be an elastic element, such as rubber, so that the seal 140 can achieve a better sealing effect through elastic deformation.

[0060] like Figures 2-4 As shown, in some optional embodiments, there are multiple valve core units 120 and support members 113, with multiple support members 113 arranged in parallel, and a valve core unit 120 is arranged between every two support members 113.

[0061] It is understood that multiple parallel support members 113 can divide the cylinder 112 in multiple places, so that multiple parallel ventilation holes 111 are formed inside the cylinder 112, and there is a ventilation hole 111 between every two adjacent support members 113. The valve core unit 120 disposed between every two support members 113 is located in the corresponding ventilation hole 111 to realize the opening or closing of the corresponding ventilation hole 111. In this way, when the blade 122 of a certain valve core unit 120 cannot be closed or opened due to foreign objects or deformation, the other valve core units 120 can still work normally. Therefore, when the air compressor 200 is stopped, the normally working valve core unit 120 can close the corresponding ventilation hole 111, thereby reducing the backflow of hot air in the connecting pipe 310 into the stopped air compressor 200. Furthermore, when the air compressor 200 is started, the normally functioning valve core unit 120 can still open the corresponding ventilation hole 111 so that the hot air generated by the operation of the air compressor 200 can be discharged through the opened ventilation hole 111.

[0062] like Figure 6As shown, in some alternative embodiments, at least one of the support 113 and the blade 122 is provided with a groove 150, and the seal 140 is installed in the groove 150.

[0063] It is understood that the seal 140 can be engaged in the groove 150 to fix the seal 140 in the groove 150. The groove wall and bottom of the groove 150 limit the seal 140 to prevent the position of the groove 150 from shifting, so that when the blade 122 closes the ventilation hole 111, the seal 140 can be pressed between the blade 122 and the support 113.

[0064] like Figure 5 As shown, in some optional embodiments, the valve core unit 120 further includes a sleeve 123, which is sleeved on the rotating shaft 121, and the blade 122 is fixedly connected to the sleeve 123.

[0065] It is understandable that by setting up the sleeve 123 and fixing the blade 122 to the sleeve 123, when the sleeve 123 rotates relative to the rotating shaft 121, it can drive the blade 122 to rotate relative to the rotating shaft 121, thereby opening or closing the ventilation hole 111. Furthermore, the sleeve 123 can be fitted onto the rotating shaft 121 from one end, facilitating the connection between the blade 122 and the rotating shaft 121, and allowing for the replacement of the blade 122 when it is damaged.

[0066] like Figure 5 As shown, when two blades 122 are provided on the same rotating shaft 121, the sleeve 123 connected to the first blade 1221 is the first sleeve 1231, and the sleeve 123 connected to the second blade 1222 is the second sleeve 1232.

[0067] In some alternative embodiments, at least two spaced sleeves 123 are connected to the same blade 122, and the sleeves 123 on the two blades 122 on the same rotating shaft 121 are alternately arranged.

[0068] It is understandable that after the sleeve 123 on the same blade 122 is fitted onto the rotating shaft 121, multiple connections can be made to the blade 122, thereby increasing the connection stability between the sleeve 123 and the blade 122. Furthermore, the alternating arrangement of the sleeves 123 on two blades 122 on the same rotating shaft 121 allows the sleeves 123 on different blades 122 on the same rotating shaft 121 to mutually limit each other, thus reducing the axial movement of the blade 122 on the rotating shaft 121. Figure 5 As shown, the first sleeve 1231 and the second sleeve 1232 are alternately arranged.

[0069] In some alternative embodiments, the end faces of the alternately arranged sleeves 123 are fitted together so that the sleeves 123 can form a limit in the axial direction of the rotating shaft 121, thereby preventing the position of the blade 122 from shifting.

[0070] In some alternative embodiments, a bushing 124 is fitted at each end of the rotating shaft 121, and the bushings are fixed to the cylinder 112, allowing the rotating shaft 121 to rotate within the bushings. By providing the bushings 124, the rotating shaft can be conveniently installed on the cylinder 112.

[0071] like Figure 1 As shown, in a second aspect, this application provides a heat dissipation system for an air compressor 200, including multiple air compressors 200, multiple connecting pipes 310, and air ducts 320. Each air compressor 200 is connected to a connecting pipe 310, the connecting pipes 310 are vertically arranged, and all connecting pipes 310 are connected to the air ducts 320. Each connecting pipe 310 is provided with the aforementioned automatic air valve 100.

[0072] It is understood that the connecting pipe 310 is vertically installed, with the air compressor 200 connected to the lower end of the connecting pipe 310 and the air duct 320 connected to the upper end of the connecting pipe 310. The hot air generated by the air compressor 200 enters the connecting pipe 310 from the lower end and flows towards the air duct 320. When passing the automatic air valve 100, it pushes the blades 122 to rotate, causing the automatic air valve 100 to open. When the air compressor 200 stops, the blades 122 rotate under their own gravity, causing the automatic air valve 100 to close.

[0073] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0074] Generally speaking, terms should be understood at least in part by their use in context. For example, the term “one or more” as used in the text can be used, at least in part, to describe any feature, structure, or characteristic of the meaning of the singular, or a combination of features, structures, or characteristics of the meaning of the plural, depending on the context.

[0075] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0076] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0077] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. An automatic air valve, characterized in that, include: A valve body (110) is used to be installed in a vertically arranged connecting pipe (310), and the valve body (110) has a ventilation hole (111). The valve core unit (120) includes a rotating shaft (121) and a blade (122). The two ends of the rotating shaft (121) are connected to the valve body (110), and the blade (122) is connected to the rotating shaft (121). The blade (122) is configured to rotate relative to the valve body (110) under the action of hot gas entering the connecting pipe (310) to open the vent (111); when hot gas stops entering the connecting pipe (310), the blade (122) rotates relative to the valve body (110) under the action of gravity to close the vent (111). A stop (130) is fixed inside the connecting pipe (310) or on the valve body (110). The stop (130) is configured to abut against the blade (122) when the blade (122) opens the ventilation hole (111) to restrict the blade (122) to the current position.

2. The automatic air valve according to claim 1, characterized in that, Two blades (122) are provided on the same rotating shaft (121). The two blades (122) rotate in opposite directions and the two blades (122) together close or open the ventilation hole (111).

3. The automatic air valve according to claim 2, characterized in that, The stop (130) includes a connecting part (131) and a stop part (132) fixed to each other. The connecting part (131) is fixed to the valve body (110). When the blade (122) opens the ventilation hole (111), the two ends of the stop part (132) respectively abut against the two blades (122) on the same rotating shaft (121).

4. The automatic air valve according to claim 1, characterized in that, The automatic air valve also includes a seal (140) disposed on at least one of the valve body (110) or the blade (122), and the seal (140) is used to seal the gap between the blade (122) and the valve body (110) when the blade (122) closes the ventilation hole (111).

5. The automatic air valve according to claim 4, characterized in that, The valve body (110) includes a cylinder (112) and a support member (113). The cylinder (112) is used to be fixedly connected to the connecting pipe (310). A vertically arranged ventilation hole (111) is formed inside the cylinder (112). The support member (113) is fixed to the inner wall of the ventilation hole (111). When the blade (122) closes the ventilation hole (111), the blade (122) overlaps the support member (113). The sealing member (140) is sealed between the support member (113) and the blade (122).

6. The automatic air valve according to claim 5, characterized in that, There are multiple valve core units (120) and multiple support members (113), and the multiple support members (113) are arranged in parallel, with one valve core unit (120) between every two support members (113).

7. The automatic air valve according to claim 5, characterized in that, At least one of the support member (113) and the blade (122) is provided with a groove (150), and the seal (140) is installed in the groove (150).

8. The automatic air valve according to claim 3, characterized in that, The valve core unit (120) also includes a sleeve (123), which is sleeved on the rotating shaft (121), and the blade (122) is fixedly connected to the sleeve (123).

9. The automatic air valve according to claim 8, characterized in that, At least two spaced sleeves (123) are connected to the same blade (122), and the sleeves (123) on the two blades (122) on the same shaft (121) are alternately arranged.

10. A heat dissipation system for an air compressor, characterized in that, It includes multiple air compressors (200), multiple connecting pipes (310) and air ducts (320), each of the air compressors (200) is connected to a connecting pipe (310), the connecting pipes (310) are arranged vertically, and each connecting pipe (310) is connected to the air duct (320), and each connecting pipe (310) is provided with an automatic air valve (100) as described in any one of claims 1-9.

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