Electromagnetic valve structure

Abstract

The utility model discloses a solenoid valve structure, including pilot valve subassembly, pilot seat and valve body, pilot valve subassembly includes pilot valve guide seat, pilot valve group and apron, and the pilot valve group is covered and installed in the pilot valve guide seat through the apron, and the apron is equipped with the socket of the electric connection of the plug of pilot valve group, and the outer end of apron is equipped with electrical interface, and the pilot valve group includes first pilot valve and second pilot valve who sets up side by side along the valve body width direction, and first pilot valve and second pilot valve are equipped with pilot air inlet and pilot exhaust port, and first pilot valve is equipped with first gas outlet, and second pilot valve is equipped with second gas outlet, and first gas outlet is linked with one piston cavity of valve body, and second gas outlet is linked with another piston cavity of valve body, and first pilot valve is used for controlling the passage of pilot air inlet and first gas outlet, and second pilot valve is used for controlling the on-off of pilot air inlet and second gas outlet, can shorten the overall length of solenoid valve, and the environment of suitable length is narrow.

Description

Technical Field

[0001] This utility model relates to the technical field of solenoid valves, and in particular to a solenoid valve structure. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation used to control fluids. They are actuators used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Pilot-operated solenoid valves are devices that switch the operation of the main valve using compressed air pressure. They belong to a composite control system combining electromagnetic and pneumatic control. This valve outputs pilot control air pressure through an electromagnetic pilot directional valve, which actuates the main valve spool to achieve the switching function. Based on the control method, they can be divided into single-electro-controlled and dual-electro-controlled valves; based on the source of the pilot pressure, they can be divided into internally piloted and externally piloted valves.

[0003] However, the pilot valve components of existing dual-electro-controlled pilot-operated solenoid valves are basically arranged side by side along the length of the valve body. This structure results in a relatively long overall length of the solenoid valve, making it unsuitable for some narrow environments. Therefore, it is necessary to improve the existing solenoid valve structure. Summary of the Invention

[0004] The purpose of this invention is to provide a solenoid valve structure in which the first pilot valve and the second pilot valve are arranged side by side along the width of the valve body, which can effectively shorten the overall length of the solenoid valve and thus make it suitable for some narrow environments.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a solenoid valve structure, including a pilot valve assembly, a pilot seat, and a valve body. The pilot valve assembly includes a pilot valve guide seat, a pilot valve group, and a cover plate. The pilot valve group is covered inside the pilot valve guide seat by the cover plate. The inner end of the cover plate is provided with a socket that is electrically connected to the plug of the pilot valve group, and the outer end of the cover plate is provided with an electrical interface. The pilot valve group includes a first pilot valve and a second pilot valve arranged side by side along the width direction of the valve body. The first pilot valve and the second pilot valve are provided with a pilot air inlet and a pilot air outlet. The first pilot valve is provided with a first air outlet, and the second pilot valve is provided with a second air outlet. The first air outlet is connected to one piston chamber of the valve body, and the second air outlet is connected to the other piston chamber of the valve body. The first pilot valve is used to control the passage between the pilot air inlet and the first air outlet, and the second pilot valve is used to control the opening and closing of the pilot air inlet and the second air outlet.

[0006] Furthermore, a circuit board is mounted on the cover plate, and the socket is integrated on the circuit board.

[0007] Furthermore, the pilot valve guide seat is provided with a limiting part for limiting the first pilot valve and the second pilot valve along a direction perpendicular to their respective insertion directions.

[0008] Furthermore, a guide portion is provided on the side of the limiting portion facing the opening.

[0009] Furthermore, the valve body includes a valve body and a rear cover. The rear cover is fixedly connected to the other end of the valve body relative to the pilot seat. The first air outlet is connected to the piston chamber located at one end of the rear cover, and the second air outlet is connected to the piston chamber located at one end of the pilot seat.

[0010] Furthermore, the pilot inlet of the first pilot valve is connected to the pilot inlet of the second pilot valve, and the pilot exhaust port of the first pilot valve is connected to the pilot exhaust port of the second pilot valve.

[0011] Furthermore, the valve body is provided with a piston exhaust port connected to a piston chamber on the side away from the pilot seat, and the piston exhaust port is connected to the pilot exhaust port.

[0012] In summary, this utility model has the following beneficial effects: 1. The solenoid valve structure of this utility model arranges the first pilot valve and the second pilot valve side by side along the width direction of the valve body, which can effectively shorten the overall length of the solenoid valve, thus making it suitable for some narrow environments. 2. The solenoid valve structure of this utility model improves the installation structure of the pilot valve assembly, making the installation of the pilot valve assembly faster and more efficient. Specifically, after the pilot valve assembly is installed into the pilot valve guide seat, it is fixedly connected to the pilot valve guide seat through the cover plate. At this time, the socket at the inner end of the cover plate will be aligned with the plug of the pilot valve assembly to achieve electrical connection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is an exploded view of the present invention.

[0015] Figure 3 This is a schematic diagram of the limiting part of this utility model.

[0016] Figure 4 This is a schematic diagram of the pilot air inlet and pilot exhaust outlet of this utility model.

[0017] Figure 5 This is a cross-sectional view of the valve stem of the valve body of this utility model when it is in the left-side position.

[0018] Figure 6 This is a cross-sectional view of the valve stem of the valve body of this utility model when it is in the right-side position.

[0019] In the diagram: 10. Pilot valve assembly; 11. Pilot valve guide seat; 111. Limiting part; 112. Guide part; 12. Pilot valve group; 121. First pilot valve; 1211. First air outlet; 122. Second pilot valve; 1221. Second air outlet; 123. Plug; 124. Pilot air inlet; 125. Pilot exhaust port; 13. Cover plate; 131. Circuit board; 132. Socket; 133. Electrical interface; 20. Pilot seat; 30. Valve body; 31. Valve body; 32. Rear cover; 33. Piston chamber; 34. Piston exhaust port. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] like Figures 1-6 As shown, a solenoid valve structure includes a pilot valve assembly 10, a pilot seat 20, and a valve body 30, which constitute the basic structure of this utility model.

[0024] The pilot valve assembly 10 includes a pilot valve guide seat 11, a pilot valve group 12, and a cover plate 13. The pilot valve group 12 is covered inside the pilot valve guide seat 11 by the cover plate 13. The inner end of the cover plate 13 is provided with a socket 132 that is electrically connected to the plug 123 of the pilot valve group 12. The outer end of the cover plate 13 is provided with an electrical interface 133. The size of the electrical interface 133 conforms to the ISO5599-2 standard. A sealing ring is provided between the cover plate 13 and the pilot valve guide seat 11.

[0025] The pilot valve assembly 12 includes a first pilot valve 121 and a second pilot valve 122 arranged side by side along the width direction of the valve body 30. The first pilot valve 121 and the second pilot valve 122 are provided with a pilot air inlet 124 and a pilot air outlet 125. The first pilot valve 121 is provided with a first air outlet 1211 and the second pilot valve 122 is provided with a second air outlet 1221. The first air outlet 1211 is connected to one of the piston chambers 33 of the valve body 30, and the second air outlet 1221 is connected to the other piston chamber 33 of the valve body 30. The first pilot valve 121 is used to control the passage between the pilot air inlet 124 and the first air outlet 1211, and the second pilot valve 122 is used to control the opening and closing of the pilot air inlet 124 and the second air outlet 1221.

[0026] In some embodiments, a circuit board 131 is mounted on the cover plate 13, the socket 132 is integrated on the circuit board 131, and the electrical interface 133 is located at the other end of the circuit board 131. The plugs 123 of the first pilot valve 121 and the second pilot valve 122, that is, the coil power supply pins, are plugged into the plugs 123 on the circuit board 131 to realize the electrical connection between the circuit board 131 and the first pilot valve 121 and the second pilot valve 122, which is converted into a standard electrical interface 133 by the PCB board.

[0027] In some embodiments, the pilot valve guide seat 11 is provided with a limiting portion 111 for limiting the first pilot valve 121 and the second pilot valve 122 along a direction perpendicular to their respective insertion directions. That is, the inner wall of the pilot valve guide seat 11 is provided with a limiting portion 111 for circumferentially limiting the first pilot valve 121 and the second pilot valve 122. Specifically, the limiting portion 111 is a limiting rib. Further, a guide portion 112 is provided on the side of the limiting portion 111 facing the opening. The guide portion 112 facilitates the insertion of the first pilot valve 121 and the second pilot valve 122 into the pilot valve guide seat 11.

[0028] In some embodiments, the valve body 30 includes a valve body 31 and a rear cover 32. The rear cover 32 is fixedly connected to the other end of the valve body 31 relative to the pilot seat 20. The first air outlet 1211 is connected to the piston chamber 33 located at one end of the rear cover 32, and the second air outlet 1221 is connected to the piston chamber 33 located at one end of the pilot seat 20.

[0029] In some embodiments, the pilot inlet 124 of the first pilot valve 121 is connected to the pilot inlet 124 of the second pilot valve 122, and the pilot exhaust port 125 of the first pilot valve 121 is connected to the pilot exhaust port 125 of the second pilot valve 122.

[0030] In some embodiments, the valve body 30 is provided with a piston exhaust port 34 connected to a piston chamber 33 on the side away from the pilot seat 20, and the piston exhaust port 34 is connected to the pilot exhaust port 125. For example... Figure 5 As shown, when the piston rod of the valve body 30 is in the leftmost position, the gas in the piston chamber adjacent to the rear cover 32 is discharged through the piston exhaust port 34. Similarly, as... Figure 6 As shown, when the piston rod of the valve body 30 is in the rightmost position, the gas in the piston chamber on the side away from the rear cover 32 is discharged through the piston exhaust port 34.

[0031] In summary, this utility model has the following beneficial effects: 1. The solenoid valve structure of this utility model arranges the first pilot valve 121 and the second pilot valve 122 side by side along the width direction of the valve body 30, which can effectively shorten the overall length of the solenoid valve, thus making it suitable for some narrow environments. 2. The solenoid valve structure of this utility model improves the installation structure of the pilot valve assembly 10, making its installation faster and more efficient. Specifically, after the pilot valve assembly 12 is installed into the pilot valve guide seat 11, it is fixedly connected to the pilot valve guide seat 11 by the cover plate 13. At this time, the socket 132 at the inner end of the cover plate 13 will be aligned with the plug 123 of the pilot valve assembly 12 to achieve electrical connection. The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A solenoid valve structure, comprising a pilot valve assembly (10), a pilot seat (20), and a valve body (30), characterized in that: The pilot valve assembly (10) includes a pilot valve guide seat (11), a pilot valve group (12), and a cover plate (13). The pilot valve group (12) is covered inside the pilot valve guide seat (11) by the cover plate (13). The inner end of the cover plate (13) is provided with a socket (132) for electrical connection with the plug (123) of the pilot valve group (12). The outer end of the cover plate (13) is provided with an electrical interface (133). The pilot valve group (12) includes a first pilot valve (121) and a second pilot valve (122) arranged side by side along the width direction of the valve body (30). The first pilot valve (121) and the second pilot valve (122) are provided with pilot air inlets (12... 4) and pilot exhaust port (125), the first pilot valve (121) is provided with a first exhaust port (1211), the second pilot valve (122) is provided with a second exhaust port (1221), the first exhaust port (1211) is connected to one of the piston chambers (33) of the valve body (30), and the second exhaust port (1221) is connected to the other piston chamber (33) of the valve body (30). The first pilot valve (121) is used to control the passage between the pilot inlet (124) and the first exhaust port (1211), and the second pilot valve (122) is used to control the opening and closing of the pilot inlet (124) and the second exhaust port (1221).

2. The solenoid valve structure according to claim 1, characterized in that: A circuit board (131) is mounted on the cover plate (13), the socket (132) is integrated on the circuit board (131), and the electrical interface (133) is integrated on the other end of the circuit board (131).

3. The solenoid valve structure according to claim 1, characterized in that: The pilot valve guide seat (11) is provided with a limiting part (111) for limiting the first pilot valve (121) and the second pilot valve (122) in a direction perpendicular to their respective insertion directions.

4. The solenoid valve structure according to claim 3, characterized in that: The limiting part (111) is provided with a guide part (112) on the side facing the opening.

5. The solenoid valve structure according to claim 1, characterized in that: The valve body (30) includes a valve body (31) and a rear cover (32). The rear cover (32) is fixedly connected to the other end of the valve body (31) relative to the pilot seat (20). The first air outlet (1211) is connected to the piston chamber (33) located at one end of the rear cover (32), and the second air outlet (1221) is connected to the piston chamber (33) located at one end of the pilot seat (20).

6. The solenoid valve structure according to claim 1, characterized in that: The pilot inlet (124) of the first pilot valve (121) is connected to the pilot inlet (124) of the second pilot valve (122), and the pilot exhaust port (125) of the first pilot valve (121) is connected to the pilot exhaust port (125) of the second pilot valve (122).

7. The solenoid valve structure according to claim 6, characterized in that: The valve body (30) is provided with a piston exhaust port (34) connected to the piston chamber (33) on the side away from the pilot seat (20), and the piston exhaust port (34) is connected to the pilot exhaust port (125).

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