Electric valve auxiliary device

Abstract

The utility model belongs to the technical field of valve assistance, and discloses an electric valve auxiliary device which comprises a valve body. The pressure relief assembly is communicated with the valve body and comprises an outer shell, an inner shell, a rotating wheel and a moving plate, a plurality of guide grooves are formed in the side face of the moving plate, a plurality of guide columns corresponding to the guide grooves are arranged on the inner wall of the inner shell, the rotating wheel comprises a plurality of contact parts, and a through hole is formed between every two contact parts; when gas in the valve body pushes the moving plate through the through holes, the moving plate rotates along the inner wall of the inner shell through cooperation of the guide grooves and the guide columns, the rotating wheel is driven to rotate, then the second rectangular through hole array of the inner shell is driven to be opposite to the first rectangular through hole array of the outer shell, and pressure relief of the valve is achieved. Complex sensing and control systems are not needed, efficient pressure relief can be achieved only through the design of a physical structure, and the complexity and cost of the system are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve assistance, in particular to an electric valve assistance device. Background Art

[0002] As an indispensable key component in modern industrial equipment and pipeline systems, electric valves are responsible for controlling the flow of fluids (including but not limited to gas and liquid). With their efficient and precise control capabilities, they provide strong support for industrial production. However, in complex industrial environments, electric valves also face many challenges. Under normal circumstances, electric valves receive command signals, drive motors or other actuators, and achieve precise control of valve opening, thereby regulating the fluid flow in the pipeline system.

[0003] In order to prevent leakage or damage under high pressure or abnormal conditions, existing electric valves often need to be equipped with corresponding auxiliary devices to improve their safety and reliability. However, existing valve auxiliary devices, especially auxiliary devices for pressure relief, are often complex in structure and too expensive. Specifically, existing auxiliary devices generally detect the pressure in the cavity through sensors, and then control the corresponding pressure relief valve to release pressure based on the threshold. Although this method can achieve basic pressure relief functions, its response speed and accuracy are often difficult to meet actual needs under high pressure environments. At the same time, due to the involvement of complex sensors and control systems, a high degree of integration of software and hardware is required, which also greatly increases the cost and maintenance cost of the entire system.

[0004] Therefore, it is particularly important to design a device that can assist the electric valve in safely releasing pressure. Utility Model Content

[0005] The main purpose of the utility model is to provide an electric valve auxiliary device, aiming to solve the technical problems of slow response speed, low precision and high cost of the existing valve auxiliary device under high pressure or abnormal conditions.

[0006] To achieve the above object, the utility model provides an electric valve auxiliary device, comprising:

[0007] Valve body;

[0008] A pressure relief assembly, the pressure relief assembly is connected to the valve body, and includes an outer shell, an inner shell, a rotating wheel and a movable plate, the outer shell is provided with a first rectangular through-hole array, the inner shell is provided with a second rectangular through-hole array staggered with the first rectangular through-hole array, the rotating wheel and the movable plate are connected by a linkage shaft, the rotating wheel and the movable plate are arranged in the inner shell, a plurality of guide grooves are provided on the side of the movable plate, a plurality of guide columns corresponding to the guide grooves are provided on the inner wall of the inner shell, the rotating wheel includes a plurality of contact portions, the contact portions abut against the inner shell, and a through hole is provided between every two of the contact portions;

[0009] Among them, when the gas in the valve body pushes the movable plate through the through hole, the movable plate rotates along the inner wall of the inner shell through the cooperation of the guide groove and the guide column, driving the rotating wheel to rotate, and then driving the second rectangular through hole array of the inner shell to be opposite to the first rectangular through hole array of the outer shell, thereby realizing the pressure relief of the valve.

[0010] Furthermore, the valve body includes a first valve body and a second valve body, the first valve body is detachably connected to the second valve body, and the pressure relief assembly is in communication with the first valve body.

[0011] Furthermore, the valve body further comprises an air inlet and an air outlet, wherein the air inlet is arranged on a side of the first valve body away from the second valve body, and the air outlet is arranged on a side of the second valve body away from the first valve body.

[0012] Furthermore, it also includes an elastic member, one end of which is connected to the inner shell, and the other end is connected to the end of the movable plate away from the rotating wheel, for providing a force to automatically reset the movable plate when the pressure of the valve body is reduced.

[0013] Furthermore, it also includes a trigger member, which is arranged in the inner shell, and the linkage shaft connects the trigger member, the rotating wheel and the movable plate. When the trigger member receives a trigger signal, the rotating wheel is indirectly driven to rotate through the linkage shaft, thereby changing the relative position of the second rectangular through hole array of the inner shell and the first rectangular through hole array of the outer shell.

[0014] Furthermore, a toggle switch is also provided on the outer surface of the housing, and the toggle switch is connected to the trigger member via a connecting member.

[0015] Furthermore, it also includes a driving mechanism, which is arranged on a side of the valve body away from the pressure relief assembly and is used to control the opening and closing of the valve body.

[0016] Furthermore, it also includes a pressure display gauge, which is arranged on the outer surfaces of the first valve body and the second valve body and is connected to the pressure sensors inside the first valve body and the second valve body respectively.

[0017] Furthermore, it also includes a safety valve, which is arranged on the second valve body.

[0018] Furthermore, a groove is provided on the outer wall of the shell, and the toggle switch is nested in the groove.

[0019] Beneficial effects:

[0020] The utility model provides an electric valve auxiliary device that realizes rapid and accurate pressure relief of electric valves under high pressure or abnormal conditions. Compared with traditional valve auxiliary devices, this device does not require complex sensing and control systems, and can achieve efficient pressure relief only through the design of physical structures, greatly reducing the complexity and cost of the system. At the same time, due to the use of mechanical structures such as a runner and a moving plate, the device has a faster response speed and higher precision under high pressure environments, and can effectively prevent leakage or damage to the electric valve due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an electric valve auxiliary device according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of an electric valve auxiliary device according to another embodiment of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of a pressure relief assembly of an electric valve auxiliary device according to another embodiment of the utility model.

[0024] Among them: 111, first valve body; 112, second valve body; 113, air inlet; 114, air outlet; 21, outer shell; 211, first rectangular through hole array; 22, inner shell; 221, second rectangular through hole array; 222, guide column; 3, rotating wheel; 31, contact part; 4, moving plate; 41, guide groove; 5, linkage shaft; 6, elastic part; 71, trigger part; 72, toggle switch; 73, connecting part; 8, driving mechanism; 9, pressure display gauge; 10, safety valve.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific 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" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] Reference Figure 1-Figure 3In one embodiment of the utility model, an electric valve auxiliary device comprises: a valve body; a pressure relief assembly, the pressure relief assembly is connected to the valve body, and comprises an outer shell 21, an inner shell 22, a runner 3 and a moving plate 4, the outer shell 21 is provided with a first rectangular through hole array 211, the inner shell 22 is provided with a second rectangular through hole array 221 staggered with the first rectangular through hole array 211, the runner 3 and the moving plate 4 are connected by a linkage shaft 5, the runner 3 and the moving plate 4 are arranged in the inner shell 22, a plurality of guide grooves 41 are provided on the side of the moving plate 4, the inner shell The inner wall of the inner shell 22 is provided with a plurality of guide columns 222 corresponding to the guide grooves 41, and the rotating wheel 3 includes a plurality of contact portions 31, the contact portions 31 abut against the inner shell 22, and a through hole is provided between every two of the contact portions 31; wherein, when the gas in the valve body pushes the movable plate 4 through the through hole, the movable plate 4 rotates along the inner wall of the inner shell 22 through the cooperation of the guide grooves 41 and the guide columns 222, driving the rotating wheel 3 to rotate, and further driving the second rectangular through hole array 221 of the inner shell 22 to be opposite to the first rectangular through hole array 211 of the outer shell 21, thereby realizing the pressure relief of the valve.

[0031] In this embodiment, the valve body and the pressure relief assembly are connected, and the pressure relief assembly includes an outer shell 21, an inner shell 22, a runner 3 and a moving plate 4. Under normal circumstances, gas flows through the valve body. However, in an emergency, if the pressure inside the valve body is too high and the pressure needs to be released quickly, the gas will accumulate inside the valve body to form a high-pressure area. At this time, the high-pressure gas will push the moving plate 4 through the through holes between the contact parts 31 in the runner 3. After being pushed by the gas, the moving plate 4 will rotate along the guide column 222 on the inner wall of the inner shell 22, guided by the guide groove 41. When the moving plate 4 rotates downward, it will drive the runner 3 to rotate synchronously. The contact part 31 on the runner 3 abuts against the inner wall of the inner shell 22, thereby driving the inner shell 22 to rotate, so that the second rectangular through hole array 221 of the inner shell 22, which was originally staggered with the first rectangular through hole array 211 of the outer shell 21, begins to gradually align with the first rectangular through hole array 211. This relatively aligned state allows the high-pressure gas inside the valve body to be quickly discharged to the outside through the pressure relief channel composed of the first rectangular through hole array 211 and the second rectangular through hole array 221, thereby reducing the gas pressure in the valve body, realizing rapid pressure relief of the valve, and protecting the safety of the valve and related equipment.

[0032] It is worth noting that the guide post 222 has a certain length, preferably, the rotatable angle is between 5 and 30 degrees, and the rotation between the movable plate 4 and the guide post 222 can be smoother by means of lubricating materials and finely processed surfaces, and the contact portion 31 and the inner shell 22 can also be abutted by means of balls or rollers to reduce friction and improve the sensitivity of rotation. When the movable plate 4 rotates to its limit position along the guide post 222, the second rectangular through hole array 221 of the inner shell 22 and the first rectangular through hole array 211 of the outer shell 21 will be completely aligned, and the gas in the valve body will be able to be discharged at the maximum flow rate, thereby achieving efficient pressure relief of the valve. The depth of the movable plate 4 in this embodiment can be set according to the specific application. When the depth of the movable plate 4 is large, the movable plate 4 will have a larger rotation angle after being pushed by the gas, thereby driving the runner 3 and the inner shell 22 to rotate at a larger angle, so that the second rectangular through hole array 221 and the first rectangular through hole array 211 can be completely aligned in a short time, achieving a faster pressure relief speed. In practical applications, the depth of the moving plate 4 is reasonably designed according to the working pressure of the valve and the required pressure relief speed. The through hole in this embodiment refers to the through hole formed by the arc surface between the multiple contact parts 31 in the runner 3 and the inner wall of the inner shell 22. The arc connection surface makes the through hole have a certain width, thereby allowing a larger flow of gas to pass through.

[0033] In another embodiment, a sealing structure is provided at the connection between the valve body and the pressure relief component. The sealing structure is made of elastic material and has good sealing performance and elastic recovery ability. When the valve body is in normal working state, the sealing structure fits tightly at the connection between the valve body and the pressure relief component, effectively preventing the leakage of gas or liquid. However, in an emergency, when the pressure inside the valve body rises sharply and the pressure needs to be released quickly, the sealing structure will be elastically deformed under the action of high-pressure gas, so that a tiny gap is generated at the connection between the valve body and the pressure relief component, thereby allowing the high-pressure gas to flow into the interior of the pressure relief component through these gaps, thereby driving the movable plate 4 to rotate, and realizing rapid pressure relief of the valve. For example, an elastic diaphragm or a rubber sealing ring can be used as a sealing structure.

[0034] refer to Figure 2 In one embodiment, the valve body includes a first valve body 111 and a second valve body 112 , the first valve body 111 and the second valve body 112 are detachably connected, and the pressure relief assembly is connected to the first valve body 111 .

[0035] In this embodiment, the design of the valve body takes into account the factors of easy maintenance and replacement. The detachable connection design between the first valve body 111 and the second valve body 112 allows the first valve body 111 to be easily separated from the second valve body 112 when the valve needs to be repaired or replaced, and then one of them can be replaced or repaired separately, which greatly improves work efficiency. At the same time, this design also makes the valve more modular, which is convenient for assembly and debugging on the production line and reduces production costs. In addition, in this embodiment, since the pressure relief assembly is connected to the first valve body 111, the normal operation of the pressure relief assembly will not be affected when the second valve body 112 is disassembled or replaced. This design ensures the safety and stability of the valve during maintenance or replacement, and also reduces the impact on the entire system caused by replacing components.

[0036] In another embodiment, for some special application scenarios, a quick connection mechanism, such as a buckle, a threaded connection, etc., can be provided between the first valve body 111 and the second valve body 112 to further improve the reliability and convenience of the connection. This quick connection mechanism can achieve a tight connection between the first valve body 111 and the second valve body 112 in a short time, and is also convenient for quick disassembly when needed.

[0037] In one embodiment, the valve body further includes an air inlet 113 and an air outlet 114 , wherein the air inlet 113 is disposed on a side of the first valve body 111 away from the second valve body 112 , and the air outlet 114 is disposed on a side of the second valve body 112 away from the first valve body 111 .

[0038] In this embodiment, the air inlet 113 is arranged on the side of the first valve body 111 away from the second valve body 112, and the air outlet 114 is arranged on the side of the second valve body 112 away from the first valve body 111. Such a layout ensures the smooth flow of gas inside the valve body, reduces air flow resistance, and improves the circulation efficiency of the valve. At the same time, the clear division of the air inlet 113 and the air outlet 114 also facilitates the user's installation and connection, and reduces the difficulty of operation. When it is necessary to connect external pipelines or equipment, it is only necessary to connect the corresponding pipelines or equipment with the air inlet 113 and the air outlet 114, without the need for complicated debugging and installation processes, which greatly saves the user's time and energy.

[0039] In addition, in this embodiment, the gas outlet 114 is arranged on a side away from the pressure relief component, which can effectively prevent the high-pressure gas from directly impacting the pipe or equipment connected to the gas outlet 114 during the emergency pressure relief process, thereby protecting the safety of these equipment. At the same time, this layout is also conducive to reducing the noise and vibration generated during the pressure relief process, and improving the stability and reliability of the entire system.

[0040] In one embodiment, an elastic member 6 is further included, one end of which is connected to the inner shell 22, and the other end is connected to the end of the movable plate 4 away from the rotor 3, for providing a force for automatically resetting the movable plate 4 when the pressure of the valve body is reduced.

[0041] In this embodiment, when the gas pressure inside the valve body is reduced to a normal range, the elastic member 6 can automatically reset the movable plate 4 to the initial position, thereby closing the pressure relief channel and preventing further leakage of gas or liquid. This automatic reset design not only simplifies the operation process and reduces the need for manual intervention, but also improves the safety performance of the valve. Specifically, the elastic member 6 can be made of a material with elastic recovery ability such as a spring or rubber. When the pressure inside the valve body increases, the gas pressure pushes the movable plate 4 to overcome the resistance of the elastic member 6 and rotate, thereby opening the pressure relief channel. When the pressure is reduced, the elastic member 6 will automatically pull the movable plate 4 back to the initial position along the guide groove track to close the pressure relief channel.

[0042] In one embodiment, a triggering member 71 is further included, and the triggering member 71 is disposed in the inner shell 22. The linkage shaft 5 connects the triggering member 71, the rotating wheel 3 and the moving plate 4. When the triggering member 71 receives a trigger signal, the rotating wheel 3 is indirectly driven to rotate through the linkage shaft 5, thereby changing the relative position of the second rectangular through-hole array 221 of the inner shell 22 and the first rectangular through-hole array 211 of the outer shell 21. A toggle switch 72 is also disposed on the outer surface of the outer shell 21, and the toggle switch 72 is connected to the triggering member 71 through a connecting member 73.

[0043] refer to Figure 2 In this embodiment, the pressure relief process of the pressure relief channel can be controlled by operating the toggle switch 72. When emergency pressure relief is required, it is only necessary to push the toggle switch 72, and the toggle switch 72 drives the trigger member 71 to be pressed down through the connecting member 73, and indirectly drives the rotating wheel 3 to rotate through the linkage shaft 5, or directly connects the trigger member 71 through the linkage shaft 5, which not only improves the convenience of operation, but also ensures the safety of operation. At the same time, this design also increases the flexibility of the use of the pressure relief channel. The opening and closing of the pressure relief channel can be controlled at any time according to actual needs, thereby realizing precise control of the internal pressure of the system. For example, in some occasions where precise control of pressure changes is required, the opening degree of the pressure relief channel can be gradually adjusted by repeatedly operating the toggle switch 72 to achieve the best pressure relief effect.

[0044] In another embodiment, the trigger member 71 can be remotely controlled. The trigger member 71 has a built-in receiver for receiving wireless signals from a remote device. Once the receiver receives the signal, the trigger member 71 drives the wheel 3 to rotate through the linkage shaft 5, thereby changing the relative position of the through-hole arrays on the inner shell 22 and the outer shell 21 to open or close the pressure relief channel.

[0045] In one embodiment, a driving mechanism 8 is further included. The driving mechanism 8 is arranged on a side of the valve body away from the pressure relief assembly and is used to control the opening and closing of the valve body.

[0046] In this embodiment, the design of the driving mechanism 8 makes the operation of the valve body more flexible and efficient. It can accurately control the opening and closing of the valve body as needed to meet the needs of different working scenarios. Specifically, the driving mechanism 8 may include an electric motor, a pneumatic device or a hydraulic device, etc., which can provide stable and reliable power output to ensure the stability and accuracy of the valve body during the opening and closing process.

[0047] In one embodiment, a pressure display gauge 9 is further included. The pressure display gauge 9 is disposed on the outer surface of the first valve body 111 and the second valve body 112 and is connected to the pressure sensors inside the first valve body 111 and the second valve body 112 respectively.

[0048] In this embodiment, the pressure display gauge 9 provides the user with an intuitive pressure reading, and the user can check the pressure display gauge 9 at any time to understand the pressure inside the valve body. At the same time, since the pressure display gauge 9 is connected to the pressure sensors inside the first valve body 111 and the second valve body 112, it can reflect the pressure changes inside the valve body in real time and accurately, providing the user with more reliable data support. This design not only improves the convenience of user operation, but also increases the safety and stability of the valve system.

[0049] In one embodiment, a safety valve 10 is further included, and the safety valve 10 is disposed on the second valve body 112 .

[0050] In this embodiment, the safety valve 10 is used to provide an alternative solution for manual opening when the pressure cannot be completely released through the pressure relief channel. In extreme cases, if the pressure reduction requirement cannot be met by the automatic pressure relief mechanism, the user can manually release the pressure by operating the safety valve 10 to ensure the safety of the system. The design of the safety valve 10 takes into account the convenience and safety of operation, so that the user can operate it quickly and effectively in an emergency. At the same time, the setting of the safety valve 10 also increases the reliability and stability of the system, providing more comprehensive protection for the safe operation of the system.

[0051] In one embodiment, a groove is further provided on the outer wall of the housing 21 , and the toggle switch 72 is nested in the groove.

[0052] In this embodiment, the design of the groove not only increases the stability of the toggle switch 72, making it difficult to fall off or move during use, but also provides a more comfortable feel for operation. The user can easily control the opening and closing of the pressure relief channel by gently pushing the toggle switch 72 in the groove, which greatly improves the convenience and safety of operation. In another embodiment, in the design of the groove, the edge of the groove adopts a sealing design, which can effectively prevent the intrusion of moisture and dust, and ensure the cleanliness and normal operation of the toggle switch 72. At the same time, this design also increases the durability and reliability of the entire valve system, enabling it to operate stably for a long time in harsh working environments.

[0053] In another embodiment, the outer surface of the entire outer shell 21 is equipped with a removable dustproof film, which can be connected to the linkage shaft 5. When the linkage shaft 5 is rotated, the dustproof film can move synchronously, thereby ensuring that when the pressure relief channel is not opened, dust and debris will not enter the interior through the gaps in the outer shell 21, causing damage to the equipment or affecting the normal operation of the equipment.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric valve auxiliary device, characterized in that: include: Valve body; A pressure relief assembly, the pressure relief assembly is connected to the valve body, and includes an outer shell, an inner shell, a rotating wheel and a movable plate, the outer shell is provided with a first rectangular through-hole array, the inner shell is provided with a second rectangular through-hole array staggered with the first rectangular through-hole array, the rotating wheel and the movable plate are connected by a linkage shaft, the rotating wheel and the movable plate are arranged in the inner shell, a plurality of guide grooves are provided on the side of the movable plate, a plurality of guide columns corresponding to the guide grooves are provided on the inner wall of the inner shell, the rotating wheel includes a plurality of contact portions, the contact portions abut against the inner shell, and a through hole is provided between every two of the contact portions; Among them, when the gas in the valve body pushes the movable plate through the through hole, the movable plate rotates along the inner wall of the inner shell through the cooperation of the guide groove and the guide column, driving the rotating wheel to rotate, and then driving the second rectangular through hole array of the inner shell to be opposite to the first rectangular through hole array of the outer shell, thereby realizing the pressure relief of the valve.

2. The electric valve auxiliary device according to claim 1, characterized in that: The valve body comprises a first valve body and a second valve body, the first valve body is detachably connected to the second valve body, and the pressure relief assembly is in communication with the first valve body.

3. The electric valve auxiliary device according to claim 2, characterized in that: The valve body further comprises an air inlet and an air outlet. The air inlet is arranged on a side of the first valve body away from the second valve body, and the air outlet is arranged on a side of the second valve body away from the first valve body.

4. The electric valve auxiliary device according to claim 1, characterized in that: It also includes an elastic member, one end of which is connected to the inner shell, and the other end is connected to the end of the movable plate away from the rotating wheel, for providing a force to automatically reset the movable plate when the pressure of the valve body is reduced.

5. The electric valve auxiliary device according to claim 1, characterized in that: It also includes a trigger member, which is arranged in the inner shell. The linkage shaft connects the trigger member, the rotating wheel and the movable plate. When the trigger member receives a trigger signal, the rotating wheel is indirectly driven to rotate through the linkage shaft, thereby changing the relative position of the second rectangular through hole array of the inner shell and the first rectangular through hole array of the outer shell.

6. The electric valve auxiliary device according to claim 5, characterized in that: The outer surface of the housing is also provided with a toggle switch, and the toggle switch is connected to the trigger member through a connecting member.

7. The electric valve assist device according to claim 1, characterized in that: It also includes a driving mechanism, which is arranged on a side of the valve body away from the pressure relief assembly and is used to control the opening and closing of the valve body.

8. The electric valve auxiliary device according to claim 2, characterized in that: It also includes a pressure display gauge, which is arranged on the outer surfaces of the first valve body and the second valve body and is connected to the pressure sensors inside the first valve body and the second valve body respectively.

9. The electric valve auxiliary device according to claim 2, characterized in that: It also includes a safety valve, which is arranged on the second valve body.

10. The electric valve assist device according to claim 6, characterized in that: The outer wall of the shell is also provided with a groove, and the toggle switch is nested in the groove.

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