High frequency electromagnetic valve with convenient wiring

Abstract

The utility model discloses a high frequency solenoid valve of convenient wiring belongs to solenoid valve field. Including main casing, control circuit board, valve body module, solenoid assembly, power input line and coil electric connection line, valve body module installs in the bottom of main casing, and the top of main casing is equipped with coil back cover, and the first accommodating cavity is arranged between main casing and coil back cover, and coil assembly sets up in the first accommodating cavity, and the side of main casing is equipped with circuit board protection cover, and the second accommodating cavity is arranged between main casing and circuit board protection cover, and control circuit board sets up in the second accommodating cavity. Compared with prior art, the application is through setting up threading hole in coil back cover, and setting up first wiring hole, second wiring hole on control circuit board, realizes the access of power input line and the wiring between control circuit board and solenoid assembly, can simplify solenoid valve's circuit, avoids appearing the situation of multi -connector connection, can improve the reliability of product.

Description

Technical Field

[0001] This utility model belongs to the field of solenoid valves, and specifically relates to a high-frequency solenoid valve that is easy to wire. Background Technology

[0002] Hot melt adhesives, polyurethane adhesives, epoxy resins, and other fluids require spray valves during spraying to ensure uniform and precise application to the desired surface. The viscosity and properties of these fluids necessitate high-performance spraying equipment. A significant portion of existing spray valves are pneumatic valves, driven by air pressure, typically using compressed air as a power source. They rely on changes in gas pressure to open and close the valve, thereby controlling the adhesive spraying and flow rate.

[0003] However, to achieve stable fluid spraying, especially in high-precision and high-frequency applications, relying solely on pneumatic valve air supply regulation is insufficient. Stable air supply control not only affects the spraying effect but also directly impacts production efficiency and product quality. Therefore, it is essential to stably control the air supply to the pneumatic valve to ensure that each spray achieves the desired results.

[0004] Solenoid valves, as a common and effective air source control device, have the advantages of fast response speed and high control accuracy, and have been widely used in many fields. If they are applied to pneumatic valves, the overall performance of the spraying system can be significantly improved.

[0005] Based on this, prior art with application number 202422745001.0 discloses a high-frequency solenoid valve, including a control module, an electromagnetic coil assembly, and a valve body module. The control module can send a high-frequency PWM pulse signal to the electromagnetic coil assembly, which can generate magnetic force to control the valve stem movement of the valve body module, thereby controlling the pneumatic valve. However, the wiring connection of the high-frequency solenoid valve disclosed in the above patent is relatively complex, resulting in poor product reliability. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this utility model is to provide a high-frequency solenoid valve that is easy to wire, which simplifies the solenoid valve's wiring and improves product reliability.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] This utility model provides a high-frequency solenoid valve that is easy to wire, comprising:

[0009] main housing;

[0010] A control circuit board capable of outputting high-frequency pulse signals;

[0011] Valve body module;

[0012] An electromagnetic coil assembly capable of controlling the valve body module's operation via high-frequency pulse signals;

[0013] And power input lines and coil electrical connection lines;

[0014] The valve body module is installed at the bottom of the main housing, and a coil rear cover is installed at the top of the main housing. A first receiving cavity is provided between the main housing and the coil rear cover, and the coil assembly is disposed in the first receiving cavity.

[0015] A circuit board protective cover is installed on the side of the main housing, and a second receiving cavity is provided between the main housing and the circuit board protective cover, and the control circuit board is disposed in the second receiving cavity;

[0016] The coil rear cover has a through hole for the power input line to pass through. The control circuit board has a first wiring hole and a second wiring hole. One end of the power input line passes through the through hole and connects to the first wiring hole. One end of the coil electrical connection line is connected to the second wiring hole, and the other end is connected to the electromagnetic coil assembly.

[0017] The control circuit board can send a 200 Hz high-frequency PWM pulse signal to the solenoid coil assembly. After the solenoid coil assembly is energized, it can control the valve body module to operate, realizing the function of the solenoid valve. Compared with existing solenoid valves, this application simplifies the solenoid valve wiring by opening a wire hole on the coil back cover and providing a first wiring hole and a second wiring hole on the control circuit board, avoiding the need for multiple connectors and improving product reliability.

[0018] Furthermore, a partition is provided inside the main housing to separate the first receiving cavity and the second receiving cavity. The power input line and the coil electrical connection line pass through the partition. Support columns are also provided at the four corners of the first receiving cavity. One end of each support column is connected to the partition, and the other end faces the circuit board protective cover. The control circuit board is attached to the support column. The support column allows a gap to be formed between the control circuit board and the partition, which provides a heat dissipation space for the control circuit board, keeps the control circuit board away from the electromagnetic coil assembly, and improves the safety of the control circuit board.

[0019] Furthermore, a limiting post is installed on the partition facing the first receiving cavity, and a limiting groove is provided on the side wall of the control circuit board, into which the limiting post is engaged. This structural design allows for the limiting of the control circuit board, thereby improving its structural stability.

[0020] Furthermore, two limiting slots are provided, each located on one of the opposite sidewalls of the control circuit board. Two limiting posts are also provided, each corresponding to one of the limiting slots. This allows for limiting the control circuit board from both ends, thereby improving the limiting effect.

[0021] Furthermore, both the circuit board protective cover and the limiting post are provided with screw holes, and the thread positions of the two are corresponding. The circuit board protective cover is also equipped with an assembly screw, which passes through the screw hole to fix the circuit board protective cover and the limiting post together. The limiting post has both a limiting effect and can be used to realize the assembly of the circuit board protective cover, thus having multiple functions.

[0022] Furthermore, the electromagnetic coil assembly includes a coil winding frame, a coil body, and a magnet. The coil body is wound on the coil winding frame, and the coil winding frame has a mounting groove in the middle, where the magnet is installed.

[0023] Furthermore, a through hole is provided at the bottom of the main housing, and the magnet and valve body module are positioned opposite each other on opposite sides of the through hole. The through hole facilitates the conduction of magnetic force, thereby enabling the electromagnetic coil assembly to control the valve body module.

[0024] Compared with the prior art, this application simplifies the wiring of the solenoid valve by opening a wire hole on the coil back cover and providing a first wiring hole and a second wiring hole on the control circuit board, avoiding the situation of multiple connectors and improving the reliability of the product. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the high-frequency solenoid valve in this embodiment.

[0026] Figure 2 This is an exploded view of the high-frequency solenoid valve in this embodiment.

[0027] Figure 3 This is a cross-sectional view of the high-frequency solenoid valve in this embodiment.

[0028] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0029] Figure 5 This is a cross-sectional view of the cylinder block.

[0030] Figure 6 This is an exploded view of the internal structure of the cylinder block in this embodiment.

[0031] In the diagram: 1. Main housing; 11. Partition plate; 12. Support column; 13. Limiting column; 14. Through hole; 2. Control circuit board; 21. First wiring hole; 22. Second wiring hole; 23. Limiting groove;

[0032] 3. Valve body module; 31. Cylinder body; 311. Cylinder inlet; 312. First outlet; 313. Second outlet; 314. First cylinder exhaust port; 315. Second cylinder exhaust port; 32. Valve stem; 321. Guide groove; 322. Horizontal limiting surface; 33. Cavity; 331. First cavity; 332. Second cavity; 333. Third cavity; 334. Fourth cavity; 335. Fifth cavity; 34. First seal; 35. Second seal 36. First side adjustment component; 361. First gap; 362. First opening; 37. Second side adjustment component; 371. Second gap; 372. Second opening; 38. Sealing ring; 39. Manual adjusting nut; 310. Elastic locking component; 320. Dustproof plug; 330. Inlet / outlet seat; 3301. External air inlet; 3302. First external exhaust port; 3303. Second external exhaust port; 340. Sealing gasket; 350. Dustproof ring;

[0033] 4. Electromagnetic coil assembly; 41. Coil winding frame; 42. Coil body; 43. Magnet; 44. Mounting slot; 5. Power input line; 6. Coil electrical connection line; 7. Coil back cover; 71. Wire hole; 8. First receiving cavity; 9. Circuit board protective cover; 10. Second receiving cavity; 20. Spring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] To achieve the above objectives, the technical solution of this utility model is as follows:

[0036] See Figure 1-6 As shown, this embodiment provides a high-frequency solenoid valve that is easy to wire, including:

[0037] Main shell 1;

[0038] 2. Control circuit board capable of outputting high-frequency pulse signals;

[0039] Valve body module 3;

[0040] An electromagnetic coil assembly 4 that can control the operation of valve body module 3 via high-frequency pulse signals;

[0041] And power input line 5, coil electrical connection line 6;

[0042] The valve body module 3 is installed at the bottom of the main housing 1, and the coil rear cover 7 is installed at the top of the main housing 1. A first receiving cavity 8 is provided between the main housing 1 and the coil rear cover 7, and the coil assembly is disposed in the first receiving cavity 8.

[0043] A circuit board protective cover 9 is installed on the side of the main housing 1, and a second receiving cavity 10 is provided between the main housing 1 and the circuit board protective cover 9. The control circuit board 2 is disposed in the second receiving cavity 10.

[0044] The coil rear cover 7 has a through hole 71 for the power input line 5 to pass through. The control circuit board 2 has a first wiring hole 21 and a second wiring hole 22. One end of the power input line 5 passes through the through hole 71 and connects to the first wiring hole 21. One end of the coil electrical connection line 6 is connected to the second wiring hole 22, and the other end is connected to the electromagnetic coil assembly 4.

[0045] The control circuit board 2 can send a 200 Hz high-frequency PWM pulse signal to the electromagnetic coil assembly 4. After the electromagnetic coil assembly 4 is energized, it can control the valve body module 3 to operate, realizing the function of the solenoid valve. Compared with existing solenoid valves, this application simplifies the solenoid valve wiring by opening a wire hole 71 in the coil back cover 7 and providing a first wiring hole 21 and a second wiring hole 22 on the control circuit board 2, avoiding the need for multiple connectors and improving product reliability.

[0046] Furthermore, the main housing 1 is provided with a partition 11 for separating the first receiving cavity 8 and the second receiving cavity 10. The power input line 5 and the coil electrical connection line 6 pass through the partition 11. Support columns 12 are also provided at the four corners of the first receiving cavity 8. One end of the support column 12 is connected to the partition 11, and the other end faces the circuit board protective cover 9. The control circuit board 2 is attached to the support column 12. The support column 12 allows a gap to be formed between the control circuit board 2 and the partition 11, which provides a heat dissipation space for the control circuit board 2 and keeps the control circuit board 2 away from the electromagnetic coil assembly 4, thereby improving the safety of the control circuit board 2.

[0047] Furthermore, a limiting post 13 facing the first receiving cavity 8 is installed on the partition 11, and a limiting groove 23 is provided on the side wall of the control circuit board 2, into which the limiting post 13 is engaged. Through the above structural design, the control circuit board 2 can be limited, thereby improving its structural stability.

[0048] Furthermore, two limiting grooves 23 are provided, each located on one of the opposite sidewalls of the control circuit board 2. Two limiting posts 13 are also provided, each corresponding to one of the limiting grooves 23. This allows for limiting the control circuit board 2 from both ends, thereby improving the limiting effect.

[0049] Furthermore, both the circuit board protective cover 9 and the limiting post 13 are provided with screw holes, and the thread positions of the two are corresponding. The circuit board protective cover 9 is also equipped with an assembly screw, which passes through the screw hole to fix the circuit board protective cover 9 and the limiting post 13 together. The limiting post 13 has both a limiting effect and can be used to realize the assembly of the circuit board protective cover 9, thus having multiple functions.

[0050] Furthermore, the electromagnetic coil assembly 4 includes a coil winding frame 41, a coil body 42, and a magnet 43. The coil body 42 is wound on the coil winding frame 41. The coil winding frame 41 has a mounting groove 44 in the middle, and the magnet 43 is installed in the mounting groove 44.

[0051] Furthermore, a through hole 14 is provided at the bottom of the main housing 1, and the magnet 43 and the valve body module 3 are arranged opposite each other on the two sides of the through hole 14. The through hole 14 facilitates the conduction of magnetic force, thereby enabling the electromagnetic coil assembly 4 to magnetically attract and control the valve stem 32 of the valve body module 3.

[0052] Furthermore, the valve body module 3 includes a cylinder body 31 and a valve stem 32. The cylinder body 31 is fixedly connected to the electromagnetic coil assembly 4 by screws, and the valve stem 32 is magnetically connected to the electromagnetic coil assembly 4. One side of the cylinder body 31 is provided with a cylinder inlet 311, and the other side is provided with a first outlet 312 and a second outlet 313. The cylinder inlet 311 is located between the first outlet 312 and the second outlet 313. The valve stem 32 is movably disposed inside the cylinder body 31, and a dustproof ring 350 is provided between the two. The valve stem 32 can achieve a seal between the cylinder inlet 311 and the first outlet 312 or the second outlet 313 through movement.

[0053] In this embodiment, the control circuit board 2 sends a high-frequency pulse signal to the electromagnetic coil assembly 4. The electromagnetic coil assembly 4 is energized to generate a magnetic attraction force to control the valve stem 32 to move up and down. When it moves to the top, it blocks the space between the cylinder inlet 311 and the second outlet 313, and the air source is discharged from the first outlet 312. When it moves to the bottom, it blocks the space between the cylinder inlet 311 and the first outlet 312, and the air source is discharged from the second outlet 313. This allows the air source to switch back and forth between the first outlet 312 and the second outlet 313, achieving stable control of the air source. At the same time, by setting the cylinder inlet 311 on the opposite side of the first outlet 312 and the second outlet 313, and between them, the travel of the valve stem 32 can be shortened.

[0054] Furthermore, a spring 20 is also provided between the valve stem 32 and the electromagnetic coil assembly 4. One end of the spring 20 is elastically connected to the valve stem 32, and the other end is elastically connected to the electromagnetic coil assembly 4. In this embodiment, if only the electromagnetic coil assembly 4 is used to control the up and down movement of the valve stem 32, an AC pulse signal is needed to switch the direction of the magnetic force generated by the electromagnetic coil assembly 4, thereby achieving upward or downward suction of the valve stem 32. However, this embodiment provides a spring 20, which stabilizes the valve stem 32 at one of the upper or lower positions of the cylinder body 31 through its own elastic force. At this time, it is only necessary to pass a DC pulse signal to the electromagnetic coil assembly 4 to apply a force opposite to the elastic force to the valve stem 32, controlling the valve stem 32 to move in the opposite direction. After the pulse signal is removed, the spring 20 controls the valve stem 32 to reset. Through the above structural design, the valve stem 32 can be controlled to move up or down, thereby simplifying the circuit design of the control circuit board 2 and saving costs.

[0055] Furthermore, a guide groove 321 is provided at the upper end of the valve stem 32, and the spring 20 is disposed in the guide groove 321. The lower end of the spring 20 abuts against or is connected to the bottom wall of the guide groove 321, and the upper end of the spring 20 abuts against or is connected to the electromagnetic coil assembly 4.

[0056] Furthermore, the cylinder body 31 is provided with a cavity 33, which includes a first cavity 331, a second cavity 332, and a third cavity 333. The second cavity 332 and the third cavity 333 are respectively located on the upper and lower sides of the first cavity 331. The cylinder inlet 311 communicates with the first cavity 331, the first outlet 312 communicates with the second cavity 332, and the second outlet 313 communicates with the third cavity 333. The valve stem 32 passes vertically through the first cavity 331, the second cavity 332, and the third cavity 333. A first sealing element 34 and a second sealing element 35 are sleeved on the valve stem 32. The first sealing element 34 is disposed in the second cavity 332 and the second sealing element 35 is disposed in the third cavity 333. The first sealing element 34 and the second sealing element 35 move synchronously with the valve stem 32, so that the first cavity 331 and the second cavity 332 are sealed by the first sealing element 34, or the first cavity 331 and the third cavity 333 are sealed by the second sealing element 35.

[0057] In this embodiment, when the valve stem 32 moves up and down, it will move the first seal 34 and the second seal 35 synchronously. When it moves to the lower position, the first chamber 331 and the second chamber 332 are sealed by the first seal 34, and the first chamber 331 and the third chamber 333 are connected, and the air source can come out from the second air outlet 313. When it moves to the upper position, the first chamber 331 and the second chamber 332 are connected, and the first chamber 331 and the third chamber 333 are sealed by the second seal 35, and the air source can come out from the first air outlet 312.

[0058] Furthermore, the cavity 33 also includes a fourth cavity 334 and a fifth cavity 335. The fourth cavity 334 is located above the second cavity 332, and the fifth cavity 335 is located below the third cavity 333. The cylinder body 31 also has a first cylinder exhaust port 314 and a second cylinder exhaust port 315. The first cylinder exhaust port 314 communicates with the fourth cavity 334, and the second cylinder exhaust port 315 communicates with the fifth cavity 335. The cavity 33 also has a first side adjusting member 36 and a second side adjusting member 37. The first side adjusting member 36 passes vertically through the fourth cavity 334, and the second side adjusting member 37 passes vertically through the fifth cavity 335. The valve stem 32 passes vertically through the first side adjusting member 36 and the second side adjusting member 37, and the valve stem 32 is movably connected to the first side adjusting member 36 and the second side adjusting member 37. A first gap 361 is provided between the first side adjusting member 36 and the valve stem 32. The component 36 is provided with a first opening 362 that communicates with the first gap 361. The first gap 361 and the fourth cavity 334 are connected through the first opening 362. The first sealing element 34 moves synchronously with the valve stem 32, so that the first cavity 331 and the second cavity 332 are sealed by the first sealing element 34, or the second cavity 332 and the first gap 361 are sealed by the first sealing element 34. The second side adjusting component 37 is provided with a second gap 371 that communicates with the second gap 371. The second gap 371 and the fifth cavity 335 are connected through the second opening 372. The second sealing element 35 moves synchronously with the valve stem 32, so that the first cavity 331 and the third cavity 333 are sealed by the first sealing element 34, or the third cavity 333 and the second gap 371 are sealed by the second sealing element 35.

[0059] In this embodiment, the cylinder inlet 311, the first chamber 331, the second chamber 332, and the first outlet 312 are connected to form a first intake channel; the first outlet 312, the second chamber 332, the first gap 361, the fourth chamber 334, and the first cylinder exhaust port 314 are connected to form a first exhaust channel; the cylinder inlet 311, the first chamber 331, the third chamber 333, and the second outlet 313 are connected to form a second intake channel; and the first outlet 312, the third chamber 333, the second gap 371, the fifth chamber 335, and the second cylinder exhaust port 315 are connected... A second exhaust channel is formed; since the height of the first seal 34 is less than the height of the second cavity 332, and the height of the second seal 35 is less than the height of the third cavity 333, the first seal 34 cannot simultaneously block the first outlet 312 with the first cavity 331 and the second cavity 332, but can only block the first outlet 312 with the first cavity 331 or the first outlet 312 with the second cavity 332; at the same time, the second seal 35 can only block the second outlet 313 with the first cavity 331 or the second outlet 313 with the third cavity 333; on the valve stem 32 When moving downwards, it can drive the first seal 34 and the second seal 35 to move synchronously. When it moves to the bottom, the first seal 34 seals the first air outlet 312 and the second cavity 332, and opens the first air outlet 312 and the first cavity 331. At this time, the second seal 35 seals the second air outlet 313 and the first cavity 331, and opens the second air outlet 313 and the third cavity 333. This opens the first air inlet channel and the second air outlet channel, closes the second air inlet channel and the first air outlet channel, and outputs air from the first air outlet 312 to the pneumatic valve. While supplying air, the air source originally stored in the second air outlet 313 can also be discharged through the second cylinder exhaust port 315, preventing the second air outlet 313 from also having the air pressure to drive the pneumatic valve, thus ensuring the normal operation of the pneumatic valve; similarly, when the first seal 34 and the second seal 35 move upwards simultaneously, the first air inlet channel and the second exhaust channel are closed, and the second air inlet channel and the first exhaust channel are opened. While the second air outlet 313 supplies air to the pneumatic valve, it can also discharge the air source originally stored in the first air outlet 312 through the first cylinder exhaust port 314.

[0060] Furthermore, a horizontal limiting surface 322 is provided at the upper end of the valve stem 32. The upper end of the first side adjusting member 36 abuts against the horizontal limiting surface 322, and the upper part of the first side adjusting member 36 is threadedly connected to the inner wall of the cavity 33. A sealing ring 38 is provided between the upper part and the inner wall of the cavity 33. The first side adjusting member 36 can adjust its vertical position by rotating the thread, thereby limiting the movement stroke of the valve stem 32.

[0061] Furthermore, the lower part of the second-side adjusting member 37 is threadedly connected to the inner wall of the cavity 33, and a sealing ring 38 is provided between the upper part and the inner wall of the cavity 33. A manual adjusting nut 39 is also provided at the lower end of the valve stem 32. The manual adjusting nut 39 passes through the second-side adjusting member 37, with its inner surface threaded to the valve stem 32 and its outer surface threaded to the inner surface of the second-side adjusting member 37. Through this structural design, the position of the lower end of the valve stem 32 can be adjusted by cooperating with the second-side adjusting member 37 and the manual adjusting nut 39.

[0062] Furthermore, the upper end of the first seal 34 abuts against the outer surface of the valve stem 32, and the lower end of the second seal 35 abuts against the upper end of the manual adjusting nut 39. An elastic locking member 310 is also fitted onto the valve stem 32. The upper end of the elastic locking member 310 abuts against or connects to the lower end of the first seal 34; the lower end of the elastic locking member 310 abuts against or connects to the upper end of the second seal 35. The elastic locking member 310 can elastically fix the first seal 34 and the second seal 35, preventing them from moving on the valve stem 32.

[0063] Furthermore, a dust plug 320 is provided at the bottom of the cavity 33, which is located below the manual adjusting nut 39.

[0064] Furthermore, an intake / exhaust seat 330 is also installed on the side of the cylinder body 31. The intake / exhaust seat 330 has an external intake port 3301, a first external exhaust port 3302, and a second external exhaust port 3303. The external intake port 3301 is connected to the cylinder intake port 311, the first external exhaust port 3302 is connected to the first cylinder exhaust port 314, and the second external exhaust port 3303 is connected to the second cylinder exhaust port 315. The intake / exhaust seat 330 is installed on the cylinder body 31 with screws, and a sealing gasket 340 is provided between the two for sealing.

[0065] Furthermore, both the first external exhaust port 3302 and the second external exhaust port 3303 are equipped with mufflers to eliminate the airflow noise generated during exhaust.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-frequency solenoid valve that is easy to wire, characterized in that, include: main housing; A control circuit board capable of outputting high-frequency pulse signals; Valve body module; An electromagnetic coil assembly capable of controlling the valve body module's operation via high-frequency pulse signals; And power input lines and coil electrical connection lines; The valve body module is installed at the bottom of the main housing, and a coil rear cover is installed at the top of the main housing. A first receiving cavity is provided between the main housing and the coil rear cover, and the coil assembly is disposed in the first receiving cavity. A circuit board protective cover is installed on the side of the main housing, and a second receiving cavity is provided between the main housing and the circuit board protective cover, and the control circuit board is disposed in the second receiving cavity; The coil rear cover has a through hole for the power input line to pass through. The control circuit board has a first wiring hole and a second wiring hole. One end of the power input line passes through the through hole and connects to the first wiring hole. One end of the coil electrical connection line is connected to the second wiring hole, and the other end is connected to the electromagnetic coil assembly.

2. The high-frequency solenoid valve with convenient wiring as described in claim 1, characterized in that, The main housing is provided with a partition for separating the first accommodating cavity and the second accommodating cavity. The power input line and the coil electrical connection line pass through the partition. Support columns are also provided at the four corners of the first accommodating cavity. One end of the support column is connected to the partition, and the other end faces the circuit board protective cover. The control circuit board is attached to the support column.

3. A high-frequency solenoid valve with convenient wiring as described in claim 2, characterized in that, The partition is equipped with a limiting post facing the first receiving cavity, and the control circuit board is provided with a limiting groove on its side wall, into which the limiting post is inserted.

4. A high-frequency solenoid valve with convenient wiring as described in claim 3, characterized in that, There are two limiting grooves, which are respectively opened on the side walls of opposite sides of the control circuit board. There are two limiting posts, which correspond one-to-one with the positions of the two limiting grooves.

5. A high-frequency solenoid valve with convenient wiring as described in claim 3, characterized in that, Both the circuit board protective cover and the limiting post have screw holes, and the thread positions of the two are corresponding. The circuit board protective cover is also equipped with an assembly screw, which is inserted into the screw hole to fix the circuit board protective cover and the limiting post together.

6. A high-frequency solenoid valve with convenient wiring as described in claim 1, characterized in that, The electromagnetic coil assembly includes a coil winding frame, a coil body, and a magnet. The coil body is wound on the coil winding frame and connected to the end of the second wiring hole away from the control circuit board. The coil winding frame has a mounting groove in the middle, and the magnet is installed in the mounting groove.

7. A high-frequency solenoid valve with convenient wiring as described in claim 6, characterized in that, The bottom of the main housing is also provided with a through hole, and the magnet and valve body module are arranged on opposite sides of the through hole.

Images