Reversing device of pressure reducing valve of air compression storage tank and air compression storage tank

Abstract

The utility model provides an air compression storage tank pressure reducing valve reversing device and an air compression storage tank, and relates to the technical field of safety. The reversing device of the pressure reducing valve of the air compression storage tank comprises a reversing valve body, a reversing valve element and two safety valve assemblies. The reversing valve body is provided with a mounting interface as well as a first connecting port and a second connecting port which are communicated with the mounting interface, and the mounting interface is used for being connected with a gas storage tank; the two safety valve assemblies are respectively connected with the two connecting ports; the reversing valve element is movably installed on the reversing valve body, and a first flow channel and a second flow channel which are independent of each other are arranged on the reversing valve element. According to the reversing device, normal verification of the safety valve can be achieved on the premise that shutdown and gas stopping are not conducted, the safety valve can be in a normal operation state, and the safety of the verification process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety, in particular to an air compression storage tank pressure reducing valve reversing device and an air compression storage tank. Background Art

[0002] In the prior art, the safety valve is directly connected to the gas tank using a pipe joint for installation. According to the use requirements of special equipment, in order to prevent the gas tank from overpressure explosion, the safety valve must be reliable and should be calibrated once in a set period. According to the prior art, when the safety valve inspection validity period expires and the safety valve needs to be replaced, the equipment must be shut down and the gas must be stopped, the compressed air in the gas tank must be emptied, and then the replacement must be carried out. In order to avoid shutting down and stopping the gas to replace the safety valve, some gas tanks are provided with a stop valve between the safety valve and the tank body. The stop valve has two switchable states: blocking and unblocking. When the safety valve needs to be replaced, the stop valve is closed and the safety valve is replaced.

[0003] The inventor has found that the operation of replacing the safety valve of the gas tank in the prior art has at least the following disadvantages:

[0004] The solution of directly installing the safety valve on the tank body requires stopping the machine and gas for calibration, and also requires draining the compressed air in the gas tank, which can cause intermittent production suspension and waste of resources;

[0005] The safety valve is installed on the tank body using a stop valve, and the pressure relief port is closed when the safety valve is replaced by using the on-off function of the stop valve. This method has safety hazards. During normal operation of the gas tank, if the stop valve is in the normally closed state, the safety valve is ineffective, which may cause the gas tank to explode due to overpressure. Utility Model Content

[0006] The utility model aims to provide an air compression tank pressure reducing valve reversing device and an air compression tank, which can realize normal calibration of the safety valve without stopping the machine or gas.

[0007] The embodiment of the utility model is achieved as follows:

[0008] In a first aspect, the utility model provides a pressure reducing valve reversing device for an air compression storage tank, comprising:

[0009] A reversing valve body, a reversing valve core and two safety valve assemblies, wherein the reversing valve body is provided with a mounting interface and a first connection port and a second connection port both connected to the mounting interface, wherein the mounting interface is used to connect to a gas storage tank; the two safety valve assemblies are connected to the first connection port and the second connection port respectively; the reversing valve core is movably mounted on the reversing valve body, and the reversing valve core is provided with a first flow channel and a second flow channel that are independent of each other;

[0010] When the reversing valve core moves relative to the reversing valve body, the installation interface is connected to the first connection port through the first flow channel while the installation interface is blocked from the second connection port, or the installation interface is connected to the second connection port through the second flow channel while the installation interface is blocked from the first connection port.

[0011] In an optional embodiment, the reversing valve core is rotatably matched with the reversing valve body to switch the working state of the first flow channel and the second flow channel.

[0012] Based on the above scheme, the position of the reversing valve core relative to the reversing valve body can be adjusted by rotating the reversing valve core, thereby adjusting the working state of the first flow channel and the second flow channel, that is, while ensuring that the first flow channel is connected to the installation interface and the first connection port, the installation interface and the second connection port are blocked, or while ensuring that the second flow channel is connected to the installation interface and the second connection port, the installation interface and the first connection port are blocked, which is easy to operate.

[0013] In an optional embodiment, a mounting channel is provided on the reversing valve body, the mounting interface, the first connecting port and the second connecting port all pass through the side wall of the mounting channel, and the reversing valve core is rotatably mounted in the mounting channel.

[0014] Based on the above scheme, the reversing valve core is installed in the installation channel, and the reversing valve core and the reversing valve body are compactly matched, small in size, and occupy a small space. At the same time, the reversing valve core rotates in the installation channel, the rotation is stable, and the required space is small, which is conducive to adjusting the working state of the first flow channel and the second flow channel.

[0015] In an optional embodiment, a first limit member and a second limit member arranged at intervals are provided on the reversing valve body, and a third limit member is provided on the reversing valve core, wherein the third limit member is located between the first limit member and the second limit member, and the first limit member and the second limit member are both used to abut against the third limit member to limit the rotation range of the reversing valve core relative to the reversing valve body.

[0016] Based on the above scheme, when the reversing valve core is rotated, when the reversing valve core is in the position where the first flow channel connects the mounting interface and the first connecting port, the third limit member on the reversing valve core just abuts against the first limit member on the reversing valve body. Similarly, when the reversing valve core is in the position where the second flow channel connects the mounting interface and the second connecting port, the third limit member on the reversing valve core just abuts against the second limit member on the reversing valve body. Through the setting of the first limit member and the second limit member, the position of the reversing valve core relative to the reversing valve body can be accurately known, thereby reducing the difficulty of operation, improving the operating efficiency, reducing the probability of misoperation, and improving the safety of maintenance.

[0017] In an optional embodiment, the first flow channel and one end of the second flow channel converge and are connected to the mounting interface at the convergence position.

[0018] Based on the above solution, one end of the first flow channel and the second flow channel are connected and converged, which can increase the exhaust area, thereby improving the sensitivity of the safety valve and facilitating the processing and manufacturing of the reversing valve core.

[0019] In an optional embodiment, a sealing ring is provided between the reversing valve core and the reversing valve body.

[0020] Based on the above solution, the number of sealing rings can be multiple. Through the cooperation of multiple sealing rings, the sealing between the reversing valve core and the reversing valve body can be avoided, the leakage probability can be reduced, and the safety can be improved.

[0021] In an optional embodiment, the first connection port or the second connection port is configured as a threaded interface.

[0022] Based on the above solution, the structures of the first connection port and the second connection port are simple, and the safety valve assembly can be directly installed on the first connection port and the second connection port in a screw connection manner, which is convenient for assembly and disassembly.

[0023] In an optional embodiment, the mounting interface is configured as a threaded interface.

[0024] Based on the above solution, the structure of the installation interface is simple and easy to process, and the connection method between the reversing valve body and the gas storage tank is simple and reliable, and easy to disassemble and assemble.

[0025] In an optional embodiment, the reversing valve core and the reversing valve body are slidably matched in a preset direction to adjust the working states of the first flow channel and the second flow channel.

[0026] Based on the above solution, the sliding of the reversing valve core relative to the reversing valve body can also adjust the working states of the first flow channel and the second flow channel, which is easy to operate.

[0027] In a second aspect, the utility model provides an air compression storage tank, the air compression storage tank comprising:

[0028] An air compression tank pressure reducing valve reversing device according to any one of the aforementioned embodiments.

[0029] The beneficial effects of the embodiments of the utility model are:

[0030] In summary, the air compression tank pressure reducing valve reversing device provided in this embodiment, when in use, uses the installation interface to connect the reversing device to the air tank, and when it is necessary to calibrate the two safety valves, the calibration is performed in a sequential manner. Specifically, when it is necessary to calibrate the first safety valve assembly connected to the first connection port, first operate the reversing valve core so that the first flow channel on it is not connected to the installation interface and the first connection port. At this time, the first safety valve assembly is not connected to the air tank, it is not in a working state, and the compressed air will not enter the first safety valve assembly. At the same time, due to the design of the second flow channel, it is ensured that the second flow channel is connected to the installation structure and the second connection port, and the second safety valve assembly connected to the second connection port is ensured to be in a working state. In this way, when the first safety valve assembly is calibrated, the second safety valve assembly can operate normally and play a protective role. Similarly, when it is necessary to calibrate the second safety valve assembly, the reversing valve core is operated to move it to the position where the first flow channel is connected to the mounting structure and the first connection port, while the second flow channel is not connected to the mounting interface and the second connection port, that is, the first safety valve assembly is in a working state, and the second safety valve assembly is in a non-working state, and the second safety valve assembly can be calibrated when the first safety valve assembly is operating normally. In other words, the reversing device provided in this embodiment can calibrate the safety valve without stopping the machine or gas, exhausting the compressed air, and ensuring that the safety valve assembly is in a normal working state, which is not easy to affect the operating efficiency of the equipment and ensures the safety of the calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is an application diagram of the air compression tank pressure reducing valve reversing device according to an embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of a pressure reducing valve reversing device for an air compression storage tank according to an embodiment of the utility model;

[0034] Figure 3 A cross-sectional view of a pressure reducing valve reversing device for an air compression storage tank according to an embodiment of the utility model;

[0035] Figure 4 It is a side view of the reversing valve body and the reversing valve core according to an embodiment of the utility model.

[0036] icon:

[0037] 001-gas tank; 100-reversing valve body; 101-installation interface; 102-first connection port; 103-second connection port; 104-installation channel; 110-first limiter; 120-second limiter; 200-reversing valve core; 201-first flow channel; 202-second flow channel; 210-third limiter; 300-first safety valve assembly; 400-second safety valve assembly. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the prior art, there are two ways to install the safety valve and the gas tank 001. The first is that the safety valve is directly installed on the top of the gas tank 001, and the second is that the safety valve is installed on the top of the gas tank 001 through a stop valve. During the operation of the safety valve, it is necessary to calibrate it regularly. When calibrating the safety valve of the first installation method, it is necessary to shut down the machine and stop the gas, and empty the compressed space in the gas tank 001. The operation is cumbersome, wastes resources, and reduces production efficiency. When calibrating the safety valve of the second installation method, although it can be emptied without shutting down the machine and stopping the gas, the stop valve is in a closed state, resulting in the safety valve not playing a role in safety protection. There are safety hazards in the calibration stage, or work errors in daily production cause the stop valve to be in a closed state, resulting in the safety valve not playing a role in safety protection.

[0045] In view of this, the designer provides an air compression tank pressure reducing valve reversing device and an air compression tank, which can not only avoid the need to shut down and vent air during the safety valve verification stage, but also ensure that the safety valve is in a normal operating state, thereby improving the safety of the verification stage.

[0046] Please combine Figure 1-Figure 4 In this embodiment, the air compression tank pressure reducing valve reversing device comprises a reversing valve body 100, a reversing valve core 200 and two safety valve assemblies. The reversing valve body 100 is provided with a mounting interface 101 and a first connection port 102 and a second connection port 103 both connected to the mounting interface 101. The mounting interface 101 is used to connect with the air storage tank 001; the two safety valve assemblies are respectively connected with the two connection ports; the reversing valve core 200 is movably mounted on the reversing valve body 100, and the reversing valve core 200 is provided with a first flow channel 201 and a second flow channel 202 which are independent of each other.

[0047] When the reversing valve core 200 moves relative to the reversing valve body 100, the installation interface 101 is connected to the first connection port 102 through the first flow channel 201 while the installation interface 101 and the second connection port 103 are blocked, or the installation interface 101 is connected to the second connection port 103 through the second flow channel 202 while the installation interface 101 and the first connection port 102 are blocked.

[0048] Based on the above scheme, the working mode of the air compression tank pressure reducing valve reversing device provided in this embodiment is as follows:

[0049] Please combine Figure 3 When in use, the reversing device is connected to the gas storage tank 001 by using the installation interface 101. When two safety valves need to be calibrated, they are calibrated in a sequential manner. For ease of description, the safety valve assembly connected to the first connection port 102 can be referred to as the first safety valve assembly 300, and correspondingly, the safety valve assembly connected to the second connection port 103 can be referred to as the second safety valve assembly 400. Specifically, when it is necessary to calibrate the first safety valve assembly 300 connected to the first connection port 102, first operate the reversing valve core 200 so that the first flow channel 201 thereon is not connected to the mounting interface 101 and the first connection port 102. At this time, the first safety valve assembly 300 is not connected to the gas tank 001, and it is not in a working state, and compressed air will not enter the first safety valve assembly 300. At the same time, due to the design of the second flow channel 202, it is ensured that the second flow channel 202 is connected to the mounting structure and the second connection port 103, and the second safety valve assembly 400 connected to the second connection port 103 is in a working state. In this way, when the first safety valve assembly 300 is calibrated, the second safety valve assembly 400 can operate normally and play a protective role. Similarly, when it is necessary to calibrate the second safety valve assembly 400, the reversing valve core 200 is operated to move it to the position where the first flow channel 201 is connected to the mounting structure and the first connection port 102, while the second flow channel 202 is not connected to the mounting interface 101 and the second connection port 103, that is, the first safety valve assembly 300 is in a working state, and the second safety valve assembly 400 is in a non-working state, and the second safety valve assembly 400 can be calibrated when the first safety valve assembly 300 is operating normally. In other words, the reversing device provided in this embodiment can calibrate the safety valve without stopping the machine and gas, exhausting the compressed air, and ensuring that the safety valve assembly is in a normal working state, which is not easy to affect the operating efficiency of the equipment and ensures the safety of the calibration process.

[0050] The following embodiments illustrate the details of the air compression tank pressure reducing valve reversing device provided in the present application by way of examples.

[0051] In this embodiment, the reversing valve core 200 and the reversing valve body 100 can be rotatably matched to switch the working state of the first flow channel 201 and the second flow channel 202. With such a design, the position of the reversing valve core 200 relative to the reversing valve body 100 can be adjusted by rotating the reversing valve core 200, thereby adjusting the working state of the first flow channel 201 and the second flow channel 202, that is, while ensuring that the first flow channel 201 is connected to the installation interface 101 and the first connection port 102, the installation interface 101 and the second connection port 103 are blocked, or while ensuring that the second flow channel 202 is connected to the installation interface 101 and the second connection port 103, the installation interface 101 and the first connection port 102 are blocked, which is convenient for operation.

[0052] For example, in one embodiment, the reversing valve body 100 is provided with a mounting channel 104, which is arranged on the side wall of the reversing valve body 100, and one end of the mounting channel 104 located on the side wall is open, which is convenient for installing the reversing valve core 200. The length direction of the mounting channel 104 is consistent with the length direction of the reversing valve body 100. The mounting interface 101, the first connection port 102 and the second connection port 103 all penetrate the side wall of the mounting channel 104, and the reversing valve core 200 is rotatably installed in the mounting channel 104. The first connection port 102 and the second connection port 103 are arranged at intervals in the length direction of the mounting channel 104, and the first connection port 102 is arranged close to the opening of the mounting channel 104, that is, the second connection port 103 is located on the side of the first connection port 102 away from the opening of the mounting channel 104. The reversing valve core 200 is installed in the mounting channel 104, and the reversing valve core 200 and the reversing valve body 100 are compactly matched, small in size, and occupy a small space. At the same time, the reversing valve core 200 rotates in the installation channel 104 , the rotation is stable, and the required space is small, which is conducive to adjusting the working state of the first flow channel 201 and the second flow channel 202 .

[0053] In addition, the first connection port 102 and the second connection port 103 can both be set as threaded interfaces. In this embodiment, the first connection port 102 and the second connection port are both set as threaded holes. Obviously, in other embodiments, only the first connection port 102 is set as a threaded interface, or only the second connection port 103 is set as a threaded interface.

[0054] The first safety valve assembly 300 and the second safety valve assembly 400 are respectively screwed to the first connection port 102 and the second connection port 103 , and the connection method is simple and the assembly and disassembly are convenient.

[0055] It should be understood that in order to facilitate the rotation of the reversing valve core 200 relative to the reversing valve body 100 and to ensure sealing, the installation channel 104 can be set as a circular hole, and correspondingly, the reversing valve core 200 is set as a cylindrical structure.

[0056] Furthermore, a sealing ring may be provided between the reversing valve core 200 and the reversing valve body 100, and the number of the sealing rings may be multiple, and the multiple sealing rings cooperate to improve the sealing performance between the reversing valve core 200 and the reversing valve body 100. In this embodiment, the number and arrangement position of the sealing rings are not limited, and they can meet the sealing requirements.

[0057] Please combine Figure 4 In this embodiment, optionally, a first limit member 110 and a second limit member 120 arranged at intervals are provided on the reversing valve body 100, and a third limit member 210 is provided on the reversing valve core 200. The third limit member 210 is located between the first limit member 110 and the second limit member 120. The first limit member 110 and the second limit member 120 are both used to abut against the third limit member 210 to limit the rotation range of the reversing valve core 200 relative to the reversing valve body 100. With such a design, when the reversing valve core 200 is rotated, when the reversing valve core 200 is in a position where the first flow channel 201 connects the installation interface 101 and the first connecting port 102, the third limit member 210 on the reversing valve core 200 just abuts against the first limit member 110 on the reversing valve body 100. Similarly, when the reversing valve core 200 is in a position where the second flow channel 202 connects the installation interface 101 and the second connecting port 103, the third limit member 210 on the reversing valve core 200 just abuts against the second limit member 120 on the reversing valve body 100. Through the setting of the first limit member 110 and the second limit member 120, the position of the reversing valve core 200 relative to the reversing valve body 100 can be accurately known, thereby reducing the difficulty of operation, improving the operating efficiency, reducing the probability of misoperation, and improving the safety of maintenance.

[0058] It should be understood that the first limit member 110 and the second limit member 120 can be configured as protrusions protruding from the side wall of the reversing valve body 100 where the mounting channel 104 is provided, and the third limit member 210 can be a protrusion protruding from the circumferential surface of the reversing valve core 200 .

[0059] In addition, the first limit member 110, the second limit member 120 and the third limit member 210 can also be set as magnets. When the first limit member 110 abuts against the third limit member 210, the two are magnetically adsorbed and connected, thereby improving the stability of the position of the reversing valve core 200. Correspondingly, when the second limit member 120 abuts against the third limit member 210, the two are magnetically adsorbed and connected, thereby improving the stability of the position of the reversing valve core 200.

[0060] In this embodiment, optionally, the first flow channel 201 and one end of the second flow channel 202 are merged and connected to the mounting interface 101 at the merged position. In this design, the first flow channel 201 and one end of the second flow channel 202 are merged and connected, which can increase the exhaust area, thereby improving the sensitivity of the safety valve, and is conducive to the processing and manufacturing of the reversing valve core 200.

[0061] At the same time, the other end of the first flow channel 201 and the other end of the second flow channel 202 are both located on the circumferential surface of the reversing valve core 200, and the other end of the first flow channel 201 and the other end of the second flow channel 202 are spaced apart in the circumferential direction of the reversing valve core 200. When the reversing valve core 200 is rotated to adjust its position with the reversing valve body 100, the port where the first flow channel 201 and the second flow channel 202 converge can always be connected to the mounting interface 101.

[0062] In this embodiment, the installation interface 101 is optionally configured as a threaded interface. With such a design, the installation interface 101 has a simple structure and is easy to process, and the connection between the reversing valve body 100 and the gas storage tank 001 is simple and reliable, and is easy to assemble and disassemble.

[0063] For example, in this embodiment, the mounting interface 101 is configured as a hollow threaded column, which can be screwed onto the top of the gas tank 001 and connected to the gas tank 001 through the hollow area, that is, the gas tank 001 is connected to the first flow channel 201 and the second flow channel 202 through the hollow area of ​​the threaded column.

[0064] In other embodiments, the reversing valve core 200 and the reversing valve body 100 can optionally be slidably matched in a preset direction to adjust the working state of the first flow channel 201 and the second flow channel 202. With such a design, the reversing valve core 200 can slide relative to the reversing valve body 100 to adjust the working state of the first flow channel 201 and the second flow channel 202, which is easy to operate.

[0065] The air compression tank pressure reducing valve reversing device provided in this embodiment provides a safety valve assembly with two switchable working states, which can verify one of the safety valve assemblies while ensuring that the other safety valve assembly is in a normal working state, without the need to shut down the machine, stop the gas and empty the air, and can ensure the safety of the verification process. Figure 3 In this state, the first safety valve assembly 300 is in normal operation, and the second safety valve assembly 400 is blocked. When the first safety valve assembly 300 needs to be checked, the reversing valve core 200 is rotated counterclockwise, and the second flow channel 202 is rotated to a position connecting the installation interface 101 and the second connection port 103, and the first flow channel 201 leaves a position connecting the installation interface 101 and the first connection port 102.

[0066] This embodiment also provides an air compression storage tank, which includes the above-mentioned air compression storage tank pressure reducing valve reversing device, and has at least the advantage of convenient and reliable safety valve calibration operation.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A reversing device for a pressure reducing valve of an air compression tank, characterized in that: include: A reversing valve body (100), a reversing valve core (200) and two safety valve assemblies, wherein the reversing valve body (100) is provided with a mounting interface (101) and a first connection port (102) and a second connection port (103) both connected to the mounting interface (101), wherein the mounting interface (101) is used to be connected to a gas storage tank (001); the two safety valve assemblies are respectively connected to the first connection port (102) and the second connection port (103); the reversing valve core (200) is movably mounted on the reversing valve body (100), and the reversing valve core (200) is provided with a first flow channel (201) and a second flow channel (202) that are independent of each other; When the reversing valve core (200) moves relative to the reversing valve body (100), the installation interface (101) and the first connection port (102) are connected through the first flow channel (201) while the installation interface (101) and the second connection port (103) are blocked; or, the installation interface (101) and the second connection port (103) are connected through the second flow channel (202) while the installation interface (101) and the first connection port (102) are blocked.

2. The air compression tank pressure reducing valve reversing device according to claim 1 is characterized in that: The reversing valve core (200) is rotatably matched with the reversing valve body (100) to switch the working states of the first flow channel (201) and the second flow channel (202).

3. The air compression tank pressure reducing valve reversing device according to claim 2 is characterized in that: The reversing valve body (100) is provided with a mounting channel (104); the mounting interface (101), the first connection port (102) and the second connection port (103) all penetrate the side wall of the mounting channel (104); and the reversing valve core (200) is rotatably mounted in the mounting channel (104).

4. The air compression tank pressure reducing valve reversing device according to claim 2 is characterized in that: The reversing valve body (100) is provided with a first limit member (110) and a second limit member (120) which are arranged at intervals, and the reversing valve core (200) is provided with a third limit member (210), wherein the third limit member (210) is located between the first limit member (110) and the second limit member (120), and the first limit member (110) and the second limit member (120) are both used for abutting against the third limit member (210) to limit the rotation range of the reversing valve core (200) relative to the reversing valve body (100).

5. The air compression tank pressure reducing valve reversing device according to claim 2, characterized in that: The first flow channel (201) and one end of the second flow channel (202) converge and are connected to the installation interface (101) at the convergence position.

6. The air compression tank pressure reducing valve reversing device according to claim 2, characterized in that: A sealing ring is provided between the reversing valve core (200) and the reversing valve body (100).

7. The air compression tank pressure reducing valve reversing device according to claim 1, characterized in that: The first connection port (102) or the second connection port (103) is configured as a threaded interface.

8. The air compression tank pressure reducing valve reversing device according to claim 1, characterized in that: The installation interface (101) is configured as a threaded interface.

9. The air compression tank pressure reducing valve reversing device according to claim 1, characterized in that: The reversing valve core (200) is slidably matched with the reversing valve body (100) in a preset direction to adjust the working states of the first flow channel (201) and the second flow channel (202).

10. An air compression storage tank, characterized in that: The compressed air storage tank comprises: An air compression storage tank pressure reducing valve reversing device as claimed in any one of claims 1 to 9.

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