A DC solenoid valve with signal

Abstract

This application relates to a DC solenoid valve with signal, belonging to the field of solenoid valve technology. It includes a valve body mechanism, comprising a valve body with an upper chamber inside. A diaphragm with a central circular hole is installed between the inner walls of the upper chamber. The device includes a control mechanism, an actuating mechanism, and a monitoring mechanism. This device has both normally open and normally closed forms, increasing its applicability. The form can be changed according to actual usage scenarios to avoid prolonged energization of the solenoid coil, extending the device's service life. The display component in the monitoring mechanism allows users to clearly observe the pressure of the medium. When the medium pressure is too high, the user can promptly reduce the pressure. If the medium pressure suddenly increases and the user fails to reduce it in time, the high pressure of the medium forces the piston upward, and through component cooperation, a locking piece engages with the fixing hole of the vertical pipe, preventing the medium pressure from exceeding the initial spring force and forcibly pushing the diaphragm upward to open the valve.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, and in particular to a DC solenoid valve with signal capability. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation systems 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. Solenoid valves can be used with different circuits to achieve the desired control, ensuring both precision and flexibility.

[0003] Patent CN220727274U discloses a stainless steel flange-connected solenoid valve. This prior art includes a valve body, a valve seat, a valve moving plate, a coil, and a movable control component. The valve body has a medium inlet and a medium outlet at both ends, respectively. The valve seat is mounted on the valve body. A valve cavity for connecting the medium inlet and the medium outlet is opened on the side of the valve body near the valve seat. The valve seat has a moving groove for the movable control component to move. The coil is sleeved on the valve seat and is used to control the movable control component to move towards the valve body. The movable control component is used to control the movement of the valve moving plate. The valve moving plate has a connecting hole for connecting the medium inlet and the moving groove, which has the effect of facilitating the solenoid valve to shut off the medium inlet and outlet.

[0004] However, the aforementioned existing technologies have the following technical defects:

[0005] 1. The existing technology is a normally closed solenoid valve, which is controlled to open by energizing the solenoid valve coil. However, in actual pipeline applications, it is not only necessary to keep it normally closed, but also to keep it normally open under some special circumstances. This requires the coil to be energized for a long time, which consumes power resources. At the same time, the coil will generate a lot of heat when energized for a long time. If the heat dissipation is not timely, it may damage the coil and result in a short service life of the valve.

[0006] Second, this existing technology uses the elastic force of the return spring to counteract the medium pressure and prevent the valve moving plate from moving. However, the user cannot clearly know the medium pressure value at this time, and when the medium pressure is greater than the initial elastic force of the return spring, it will push the valve moving plate to rise, causing the valve to lose its closing effect.

[0007] In summary, existing technologies still have room for improvement in terms of expanding the scope of application, extending service life, and preventing valves from being forcibly opened by excessive medium pressure. Therefore, those skilled in the art have proposed a solenoid valve that can switch between normally open and normally closed types and fix the diaphragm when the medium is under high pressure. Summary of the Invention

[0008] To address the aforementioned problems, this application provides a DC solenoid valve with signal input, employing the following technical solution:

[0009] It includes a valve body mechanism, which includes a valve body. The valve body has an upper cavity inside, and a diaphragm with a central hole is installed between the inner walls of the upper cavity. A protective shell is installed on the upper center of the valve body.

[0010] It includes a control mechanism and an actuation mechanism. The control mechanism includes a vertical tube located inside the protective shell, with a set of electromagnetic coils symmetrically installed on the side of the vertical tube. The actuation mechanism includes an iron block that is slidably disposed inside the vertical tube and located between two electromagnetic coils. A connector connected to a diaphragm is installed on the lower side of the iron block. The control mechanism also includes an adjustment component.

[0011] It is also equipped with a monitoring mechanism, which includes a groove at the lower end of the connector and aligned with the circular hole on the diaphragm. A piston adapted to the groove is slidably disposed in the groove. A spring is connected between the piston and the top surface of the groove. The monitoring mechanism also includes a display component.

[0012] Preferably, the valve body mechanism also includes a medium inlet and a medium outlet located on the side of the valve body and opposite to each other, with a connecting flange provided at each port of the medium inlet and the medium outlet.

[0013] Preferably, the inner bottom surface of the upper cavity has an L-shaped connecting groove that is aligned with the groove and bends toward the medium inlet and communicates with it. The inner bottom surface of the upper cavity has an outlet groove that communicates with the medium outlet on one side at the port of the L-shaped connecting groove.

[0014] Preferably, the adjusting component includes an upper seat that is slidably disposed inside the vertical tube and above the iron block, and a spring is connected between the upper seat and the iron block.

[0015] Preferably, a hexagonal threaded seat is rotatably mounted on the upper center of the protective shell, and a screw is provided in the threaded hole of the hexagonal threaded seat, which is adapted to it and extends to the inside of the protective shell and connects with the upper seat.

[0016] Preferably, two limiting members are symmetrically installed on the inner wall of the vertical tube, and a set of limiting grooves adapted to the limiting members are opened on the side of the iron block, the upper seat and the connecting member.

[0017] Preferably, the display assembly includes an extension rod installed at the center of the lower side of the piston and extending to the outside of the valve body. A vertical rod is installed on one side of the extension rod on the lower side of the valve body. A limiting plate that slides on the vertical rod is installed at the lower end of the extension rod. A scale with the same length as the groove is provided on the side of the vertical rod above the limiting plate.

[0018] Preferably, the movable mechanism also includes an orifice-shaped groove opened in the center of the iron block, a set of movable plates symmetrically arranged in the orifice-shaped groove and adapted thereto, and a set of springs connecting the two movable plates in the set.

[0019] Preferably, the side of the iron block has a through hole aligned with each movable plate, and a clip that is adapted to and connected to the movable plate on the same side is slidably disposed in the through hole. The side of the vertical tube has a fixing hole aligned with each through hole.

[0020] Preferably, a limiting ring adapted to the piston is provided at the lower end of the groove, and a set of connecting pipes whose upper ends are connected to the orifice groove are symmetrically installed on the inner wall of the groove near the upper end, and the connection is located between two movable plates. Hydraulic oil is filled between the two movable plates of the groove and the orifice groove.

[0021] In summary, this application includes at least one of the following beneficial technical effects of DC signal-enabled solenoid valves:

[0022] 1. The control mechanism of this application can adjust the position of the connector to control the opening and closing status of the port on the L-shaped connecting groove when it is not powered. It also has two electromagnetic coils distributed vertically, so that the opening and closing status of the port on the L-shaped connecting groove can be controlled by energizing the electromagnetic coils at different positions. This allows the device to have two seamless switching modes: normally open and normally closed, which increases the applicability of the device. At the same time, the form can be changed according to the actual use scenario to avoid the electromagnetic coils being energized for a long time, thus extending the service life of the device. Even if one electromagnetic coil is damaged, the device can be adjusted to the corresponding model according to the electromagnetic coil that can be used normally, and can continue to be used as a single model, thus avoiding waste of the device.

[0023] Second, this application also facilitates users to clearly observe the pressure of the medium through the display component in the monitoring mechanism. When the medium pressure is found to be too high, the user can reduce the medium pressure in time. At the same time, in conjunction with the moving mechanism, when the medium pressure suddenly increases and the user fails to reduce it in time, the high pressure of the medium pushes the piston upward, and through the cooperation of the components, the locking piece is locked into the fixing hole of the vertical pipe, thereby fixing the connecting piece and the diaphragm. This prevents the medium pressure from exceeding the initial elastic force of the spring and forcibly pushing the diaphragm upward to open the valve, ensuring the normal use of the valve. Moreover, it can automatically release the lock after the pressure is reduced, realizing automatic control by medium pressure without manual intervention. Attached Figure Description

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a structural diagram of this application.

[0026] Figure 2 This is a cross-sectional view of this application.

[0027] Figure 3 This is a schematic diagram of the internal structure of the valve body mechanism in this application.

[0028] Figure 4This is a schematic diagram of the control mechanism structure of this application.

[0029] Figure 5 This is a cross-sectional view of the control mechanism in operation according to this application.

[0030] Figure 6 This is a schematic diagram of the main disassembled structure of the control mechanism in this application.

[0031] Figure 7 This is a partial structural diagram of the control mechanism of this application.

[0032] Figure 8 This is a schematic diagram of the monitoring agency structure in this application.

[0033] Figure 9 This is a schematic diagram of the organizational structure of the activities in this application.

[0034] Figure 10 This is a schematic diagram of the disassembled structure of the protection component of this application.

[0035] In the diagram: 1. Valve body mechanism; 101. Valve body; 102. Upper cavity; 103. Diaphragm; 104. Medium inlet; 105. Medium outlet; 106. L-shaped connecting groove; 107. Outlet groove; 108. Connecting flange; 2. Control mechanism; 201. Vertical pipe; 202. Electromagnetic coil; 204. Connecting piece; 205. Upper seat; 206. Spring 1; 207. Hexagonal threaded seat 1; 208. Screw 1; 209. Limiting element; 210. Limiting groove; 211. Fixing hole; 212. Rectangular groove 213. Rectangular block; 214. Hexagonal threaded seat II; 215. Screw II; 3. Movable mechanism; 301. Iron block; 302. Orifice groove; 303. Slide rod; 304. Through hole; 305. Clamp; 306. Movable plate; 307. Spring II; 4. Monitoring mechanism; 401. Groove; 402. Piston; 403. Spring III; 404. Extension rod; 405. Vertical rod; 406. Limiting plate; 407. Connecting pipe; 5. Protective shell; 6. Ring seat; 7. Transparent shell; 8. Internal thread. Detailed Implementation

[0036] The following combination Figure 1 - Figure 10 The embodiments of this application will be described in detail.

[0037] This application discloses a DC solenoid valve with signal control. The control mechanism can adjust the position of the connector to control the opening and closing of the L-shaped connecting slot port when it is not energized. It also has two electromagnetic coils distributed vertically, so that the opening and closing of the L-shaped connecting slot port can be controlled by energizing the electromagnetic coils at different positions. This allows the device to have both normally open and normally closed forms, increasing the applicability of the device. At the same time, the form can be changed according to the actual use scenario to avoid the electromagnetic coils being energized for a long time, thus extending the service life of the device.

[0038] Example 1:

[0039] like Figures 1-3 As shown, the device includes a valve body mechanism 1, which includes a valve body 101. The valve body 101 has an upper cavity 102 inside. The valve body mechanism 1 also includes a medium inlet 104 on the side of the valve body 101. The center of the inner bottom surface of the upper cavity 102 has an L-shaped connecting groove 106 that is aligned with the groove 401 and bends toward the medium inlet 104 and communicates with it. After the medium enters the medium inlet 104, it enters the upper cavity 102 through the L-shaped connecting groove 106.

[0040] like Figure 2 and Figure 3 As shown, the valve body 101 also has a medium outlet 105 on its side opposite to the medium inlet 104. The inner bottom surface of the upper cavity 102 has an outlet groove 107 on one side of the L-shaped connecting groove 106 port, which communicates with the medium outlet 105. The medium entering the upper cavity 102 is discharged into the medium outlet 105 through the outlet groove 107 and then discharged.

[0041] like Figure 3 As shown, a connecting flange 108 is provided at each port of the medium inlet 104 and the medium outlet 105. A diaphragm 103 is installed between the inner walls of the upper cavity 102. The device is installed in a predetermined position in the pipeline through the two connecting flanges 108. When the diaphragm 103 blocks the upper port of the L-shaped connecting groove 106, the device is closed. When the blockage is released, the device is opened.

[0042] The medium can be a liquid or a gas.

[0043] In summary, when the device is installed at a predetermined position in the pipeline via two connecting flanges 108, and the diaphragm 103 does not block the upper port of the L-shaped connecting groove 106, the device opens, the medium enters the medium inlet 104, passes through the L-shaped connecting groove 106 into the upper cavity 102, and then exits through the outlet 107 into the medium outlet 105 before being discharged. When the diaphragm 103 blocks the upper port of the L-shaped connecting groove 106, the medium cannot enter the upper cavity 102 from the L-shaped connecting groove 106, and the device closes.

[0044] like Figure 2As shown, a protective shell 5 is installed at the upper center of the valve body 101, and the protective shell 5 protects the components installed inside it.

[0045] like Figure 4 and Figure 5 As shown, it includes a control mechanism 2 and an active mechanism 3. The control mechanism 2 includes a vertical tube 201 located inside the protective shell 5. A set of electromagnetic coils 202 are symmetrically installed on the side of the vertical tube 201. The active mechanism 3 includes an iron block 301 that is slidably disposed inside the vertical tube 201 and located between the two electromagnetic coils 202. A connector 204 connected to the diaphragm 103 is installed on the lower side of the iron block 301. The electromagnetic coils 202 are DC electromagnetic coils. When the upper electromagnetic coil 202 is energized, it attracts the iron block 301 to rise. When the lower electromagnetic coil 202 is energized, it attracts the iron block 301 to fall. The moving iron block 301 drives the connected diaphragm 103 to deform through the connector 204.

[0046] like Figure 4 and Figure 5 As shown, the control mechanism 2 also includes an adjustment component, which includes an upper seat 205 that is slidably disposed inside the vertical tube 201 and above the iron block 301. A spring 206 is connected between the upper seat 205 and the iron block 301. When the iron block 301 moves toward the upper seat 205, it will compress the spring 206. When it moves in the opposite direction toward the upper seat 205, it will stretch the spring 206.

[0047] like Figure 4 and Figure 5 As shown, a hexagonal threaded seat 207 is rotatably mounted on the upper center of the protective shell 5. A screw 208 is provided in the threaded hole of the hexagonal threaded seat 207, which is adapted to it and extends to the interior of the protective shell 5 and is connected to the upper seat 205. By rotating the hexagonal threaded seat 207 with a wrench, the screw 208 is driven to descend. When rotated in the opposite direction, the screw 208 is driven to rise.

[0048] An annular seat (not shown) is installed on the inner wall of the vertical tube 201 below the upper seat 205. When the upper seat 205 contacts the annular seat, the diaphragm 103 seals the upper port of the L-shaped connecting groove 106.

[0049] A controller (not shown) is also installed on the side of the protective shell 5. The controller includes a relay module, which switches the energizing circuit of the upper and lower electromagnetic coils 202.

[0050] like Figure 5 and Figure 6As shown, two limiting members 209 are symmetrically installed on the inner wall of the vertical tube 201. The sides of the iron block 301, the upper seat 205 and the connecting member 204 are all provided with a set of limiting grooves 210 that are adapted to the limiting members 209. Through the limiting grooves 210 and the limiting members 209, the iron block 301, the upper seat 205 and the connecting member 204 can only move up and down in the vertical tube 201 and cannot rotate.

[0051] In summary, when a normally closed solenoid valve is required, rotating the hexagonal threaded seat 207 drives the screw 208 to descend. The descending screw 208, through the upper seat 205 and spring 206, causes the iron block 301 to descend. When the upper seat 205 contacts the annular seat, the connector 204 causes the diaphragm 103 to move downward, which precisely blocks the upper port of the L-shaped connecting groove 106. Thus, when the solenoid coil 202 is not energized, the device is in a closed state. Afterward, it is set to energize only the upper solenoid coil 202. When it is necessary to open, the controller controls the upper solenoid coil 202 to generate magnetic force, attracting the iron block 301 to rise. This compresses the spring 206 and, at the same time, causes the diaphragm 103 to rise through the connector 204, releasing the blockage of the L-shaped connecting groove 106, thereby opening the valve. When closing, the energization of the upper solenoid coil 202 is released, the compressed spring 206 rebounds, causing the diaphragm 103 to return to its original position and close the upper port of the L-shaped connecting groove 106, thus closing the valve.

[0052] When a normally open solenoid valve is required, the reverse hexagonal threaded seat 207 drives the screw 208 to rise, causing the upper seat 205 to rise until it contacts the inner top surface of the protective shell 5. At the same time, the rising upper seat 205 also causes the connecting piece 204 and the diaphragm 103 to rise, releasing the blockage on the upper end of the L-shaped connecting groove 106. Thus, when the solenoid coil 202 is not energized, the valve is in the open state. Afterwards, when energized, the controller controls the lower solenoid coil 202 to be energized. When it is necessary to close, the lower solenoid coil 202 is energized and generates magnetic force, attracting the iron block 301 to descend. This stretches the spring 206 and simultaneously causes the diaphragm 103 to descend, blocking the upper end of the L-shaped connecting groove 106, thus closing the valve. When the energization is released, the magnetic force of the lower solenoid coil 202 disappears, the spring 206 returns to its original position, pulling the iron block 301 to rise, causing the diaphragm 103 to rise, releasing the blockage, and opening the valve.

[0053] like Figure 7 and Figure 8As shown, a circular hole is provided in the center of the diaphragm 103, and a monitoring mechanism 4 is also provided. The monitoring mechanism 4 includes a groove 401 opened at the lower end of the connector 204 and aligned with the circular hole on the diaphragm 103. A piston 402 adapted to the groove 401 is slidably arranged in the groove 401. A spring 403 is connected between the upper part of the piston 402 and the top surface of the groove 401. A limiting ring adapted to the piston 402 is provided at the lower end of the groove 401. The medium pressure in the L-shaped connecting groove 106 acts on the piston 402, pushing the piston 402 to rise and compress the spring 403. The limiting ring is used to limit the piston 402 and prevent it from detaching from the groove 401.

[0054] like Figure 8 As shown, the monitoring mechanism 4 also includes a display component, which includes an extension rod 404 installed at the center of the lower side of the piston 402 and extending to the outside of the valve body 101. A vertical rod 405 is installed on one side of the extension rod 404 on the lower side of the valve body 101. A limiting plate 406 that slides on the vertical rod 405 is installed at the lower end of the extension rod 404. The moving piston 402 drives the limiting plate 406 to slide on the limiting plate 406 through the extension rod 404.

[0055] like Figure 8 As shown, the side of the vertical rod 405 is provided with a scale of the same length as the groove 401 above the limiting plate 406. The scale length is the same as the groove 401 and the upper end extends to the lower side of the valve body 101. Thus, the user can determine the position of the piston 402 by observing the position of the vertical rod 405 on the scale line.

[0056] The scale lines and the upper side of the vertical rod 405 are covered with fluorescent material, and the two fluorescent colors are different. The fluorescent material allows the scale lines and the upper side of the vertical rod 405 to fluoresce at night, making it convenient for users to observe at night or in the dark.

[0057] The operator determines the compression of the piston 402 by the position of the vertical rod 405 to judge the medium pressure. When it approaches the upper end of the scale line, the user needs to reduce the medium pressure entering the medium inlet 104 to avoid the medium pressure from exceeding the initial elastic force of the spring 206 and forcibly pushing the diaphragm 103 to rise and open the valve.

[0058] In summary, the medium pressure inside the L-shaped connecting groove 106 acts on the piston 402, pushing the piston 402 upward to compress the spring 403. The moving piston 402 drives the limiting plate 406 to slide on the limiting plate 406 via the extension rod 404. The user can judge the position of the piston 402 by observing the position of the vertical rod 405 on the scale line. When the vertical rod 405 is about to rise to the top of the scale line and is about to reach the compression limit of the piston 402, the user needs to reduce the medium pressure entering the medium inlet 104 to avoid the medium pressure being greater than the initial elastic force of the spring 206, which would force the diaphragm 103 to rise and open the valve.

[0059] The movable mechanism 3 also includes an orifice-shaped groove 302 opened in the center of the iron block 301. A set of movable plates 306 adapted to it are symmetrically arranged in the orifice-shaped groove 302. A set of springs 307 are connected between the two movable plates 306 in the set. A set of sliding rods 303 that pass through the two movable plates 306 and are slidably connected to them are symmetrically installed in the orifice-shaped groove 302. When the two movable plates 306 move away from each other, the two springs 307 will be stretched. Afterwards, when the springs 307 rebound and return to their original position, they will drive the two movable plates 306 to move closer to each other until they return to their original position.

[0060] like Figure 6 and Figure 9 As shown, the side of the iron block 301 has a through hole 304 aligned with each of the movable plates 306. A clip 305 that is adapted to and connected to the movable plate 306 on the same side is slidably disposed in the through hole 304. The side of the vertical tube 201 has a fixing hole 211 aligned with each of the through holes 304. When the two movable plates 306 move away from each other, they will drive each clip 305 to move toward the fixing hole 211 on the same side. When the movable plate 306 contacts the inner wall of the orifice 302, the clip 305 is inserted into the fixing hole 211 on the same side, thereby fixing the iron block 301 and the vertical tube 201.

[0061] When the upper seat 205 contacts the annular seat, the two clips 305 on the iron block 301 are aligned with the two fixing holes 211.

[0062] like Figure 8 and Figure 9 As shown, a set of connecting pipes 407 with their upper ends connected to the orifice 302 are symmetrically installed on the inner wall of the groove 401 near the upper end, and the connection is located between the two movable plates 306. The groove 401 and the two movable plates 306 of the orifice 302 are filled with hydraulic oil. When the piston 402 rises, it will push the hydraulic oil in the groove 401 through the connecting pipes 407 into the area between the two movable plates 306 in the orifice 302, thereby pushing the two movable plates 306 away from each other. When the piston 402 reaches the compression limit, the hydraulic oil entering the orifice 302 pushes the clamp 305 out of the through hole 304 and into the fixed hole 211 on the same side.

[0063] The compression limit force of piston 402 plus the stretching force of spring 307 when movable plate 306 contacts the inner wall of orifice groove 302 equals the initial force of spring 206, thus ensuring that the iron block 301 is fixed when the medium pressure reaches the initial force of spring 206.

[0064] An annular wear-resistant sealing ring (made of fluororubber) is provided on the outer side of the movable plate 306 and at the sliding connection between the movable plate 306 and the slide rod 303. This seals the gap between the movable plate 306 and the inner wall of the orifice groove 302, as well as the gap at the sliding connection between the slide rod 303 and the movable plate 306. At the same time, the wear-resistant sealing ring can ensure its service life and sealing performance during long-term use of hydraulic oil.

[0065] In summary, the medium pressure inside the L-shaped connecting groove 106 acts on the piston 402, pushing it upward. While compressing the spring 403, it also forces the hydraulic oil in the groove 401 into the orifice 302 through the connecting pipe 407, pushing the two movable plates 306 away from each other, stretching the spring 307, and simultaneously moving the locking piece 305 towards the outer port of the through hole 304. When the piston 402 reaches its compression limit, the hydraulic oil entering the orifice 302 pushes the locking piece 305 out of the through hole 304 and into the fixing hole 211 on the same side, fixing the iron block 301 to the vertical pipe 201 and fixing the diaphragm 103. This prevents excessive hydraulic pressure from exceeding the initial elastic force of the spring 206, causing the diaphragm 103 to rise and open the valve.

[0066] When the pressure of the medium entering the L-shaped connecting groove 106 is reduced, the pressure acting on the piston 402 decreases, the spring 3 403 extends and pushes the piston 402 down, the spring 2 307 rebounds and pulls the two movable plates 306 closer to each other, thereby pressing some of the hydraulic oil in the orifice 302 back into the groove 401 through the connecting pipe 407. At the same time, the moving movable plate 306 drives the clamp 305 to move out of the fixing hole 211, releasing the fixation of the iron block 301.

[0067] When the device is switched to the normally open type, the rising connecting piece 204 will also drive the vertical rod 405 to rise, thereby shortening the distance between the vertical rod 405 and the lower side of the valve body 101, and thus shortening the active length of the vertical rod 405. When the medium pressure piston 402 rises, before reaching the compression limit of the spring 3 403, the lower side of the valve body 101 has already contacted the vertical rod 405 to limit it and prevent the piston 402 from continuing to move, thereby preventing the high pressure of the medium from fixing the iron block 301 to the vertical pipe 201 when closed.

[0068] Example 2:

[0069] Based on Example 1, such as Figure 4 and Figure 7 As shown, a cylindrical slot is provided inside the screw 208. A hexagonal threaded seat 214 is rotatably mounted on the upper end of the screw 208. A screw 215 is provided in the threaded hole of the hexagonal threaded seat 214 and extends into the slot. Rotating the hexagonal threaded seat 214 can drive the screw 215 to rise, and vice versa.

[0070] like Figure 4 and Figure 7 As shown, a rectangular groove 212 is provided above the groove 401 in the connector 204. A rectangular block 213 that is adapted to it is slidably arranged in the rectangular groove 212. The lower end of the screw 215 extends into the rectangular groove 212 and connects with the rectangular block 213. The movable screw 215 drives the rectangular block 213 to move, while the fixed rectangular block 213 can limit the stroke of the movable connector 204.

[0071] The distance between the rectangular block 213 and the lower side of the rectangular groove 212 can be adjusted by adjusting the screw 215, thereby adjusting the rising height of the connector 204 and controlling the rising height of the diaphragm 103 to achieve valve flow control. In the normally open type, the position of the rectangular block 213 needs to be adjusted to move it to the lowest end of the rectangular groove 212 to avoid obstructing the descent of the connector 204.

[0072] like Figure 1 and Figure 10 As shown, a protective component is also provided. The protective component includes an annular seat 6 installed on the lower side of the valve body 101, located outside the display component. A transparent shell 7 covering the display component is fitted on the outer side of the annular seat 6. An external thread is provided on the outer side of the annular seat 6, and an internal thread 8 matching the external thread is provided on the inner side of the port of the transparent shell 7. The transparent shell 7 can protect the display component in the monitoring mechanism 4 from bumps and damage. At the same time, the transparent shell 7 is connected to the annular seat 6 through the internal thread 8 and the external thread, so that the transparent shell 7 can be unscrewed from the annular seat 6 by rotation.

[0073] This application also discloses a method for using a DC solenoid valve with a signal, the steps of which are as follows:

[0074] S1, Valve Body Mechanism 1, Device Installation: Install the device on the predetermined pipeline. Specifically, install the device at the predetermined position on the pipeline through two connecting flanges 108, ensuring that the protective shell 5 is vertically upward. Simultaneously, supply power to the device to ensure its normal operation. When the diaphragm 103 does not block the upper port of the L-shaped connecting groove 106, the device opens. The medium enters the medium inlet 104 and then enters the upper cavity 102 through the L-shaped connecting groove 106, and then exits through the outlet 107 into the medium outlet 105, and is then discharged. When the diaphragm 103 blocks the upper port of the L-shaped connecting groove 106, the medium cannot enter the upper cavity 102 from the L-shaped connecting groove 106, and the device closes.

[0075] S2. Normally Closed Adjustment: Adjust the device to a normally closed solenoid valve. Specifically, rotating the hexagonal threaded seat 207 drives the screw 208 to descend. The descending screw 208, through the upper seat 205 and spring 206, drives the iron block 301 to descend. When the upper seat 205 contacts the annular seat, the connecting piece 204 drives the diaphragm 103 to move down, which precisely blocks the upper port of the L-shaped connecting groove 106. Thus, when the solenoid coil 202 is not energized, the device is in a closed state. Afterwards, it is set to only energize the upper... When the square electromagnetic coil 202 is energized, and the valve needs to be opened, the controller controls the upper electromagnetic coil 202 to generate magnetic force, attracting the iron block 301 to rise. At the same time, the spring 206 is compressed, and the diaphragm 103 is raised through the connector 204 to release the blockage of the L-shaped connecting groove 106, thereby opening the valve. When closing, the upper electromagnetic coil 202 is de-energized, the compressed spring 206 rebounds, and the diaphragm 103 returns to its original position to close the upper port of the L-shaped connecting groove 106, thus closing the valve.

[0076] S3. Normally Open Type Adjustment: Switch the device to the 'normally open type' solenoid valve. Specifically, reverse the hexagonal threaded seat 207 to drive the screw 208 to rise, causing the upper seat 205 to rise until it contacts the inner top surface of the protective shell 5. At the same time, the rising upper seat 205 will also drive the connecting piece 204 and the diaphragm 103 to rise, releasing the blockage on the upper end of the L-shaped connecting groove 106. Thus, when the solenoid coil 202 is not energized, the valve is in the open state. Afterwards, when energized, the controller controls the lower solenoid coil 202 to be energized. When it is necessary to close, the lower solenoid coil 202 is energized to generate magnetic force, attracting the iron block 301 to descend. This stretches the spring 206 and simultaneously drives the diaphragm 103 to descend, blocking the upper end of the L-shaped connecting groove 106, thus closing the valve. When the energization is released, the magnetic force of the lower solenoid coil 202 disappears, the spring 206 returns to its original position, pulling the iron block 301 to rise, causing the diaphragm 103 to rise, releasing the blockage, and opening the valve.

[0077] S4. High-pressure protection: In the normally closed type, the movable mechanism 3 and the monitoring mechanism 4 work together to prevent the valve from opening automatically when the medium is under high pressure. Specifically, the medium pressure in the L-shaped connecting groove 106 acts on the piston 402, pushing it to rise. While compressing the spring 403, the hydraulic oil in the groove 401 is forced into the orifice groove 302 through the connecting pipe 407, pushing the two movable plates 306 away from each other, stretching the spring 307, and at the same time driving the locking piece 305 to move towards the outer port of the through hole 304. When the piston 402 reaches the compression limit, the hydraulic oil entering the orifice groove 302 pushes the locking piece 305 out of the through hole 304 and into the fixing hole 211 on the same side, fixing the iron block 301 to the vertical pipe 201 and fixing the diaphragm 103, preventing the excessive hydraulic pressure from exceeding the initial elastic force of the spring 206 and causing the diaphragm 103 to rise and open the valve.

[0078] S5. Release the fixation. After the high-pressure medium fixes the movable mechanism 3 to the vertical pipe 201, the fixation is released by reducing the medium pressure. Specifically, after reducing the medium pressure entering the L-shaped connecting groove 106, the pressure acting on the piston 402 is reduced. Spring 3 403 extends and pushes the piston 402 down. Spring 2 307 rebounds and pulls the two movable plates 306 closer to each other, thereby pressing some of the hydraulic oil in the orifice 302 back into the groove 401 through the connecting pipe 407. At the same time, the moving movable plate 306 drives the clamp 305 to move out of the fixing hole 211, releasing the fixation on the iron block 301.

[0079] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0080] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A DC solenoid valve with signal, comprising a valve body mechanism (1), the valve body mechanism (1) comprising a valve body (101), an upper cavity (102) being provided inside the valve body (101), a diaphragm (103) with a central hole being installed between the inner walls of the upper cavity (102), and a protective shell (5) being installed at the upper center of the valve body (101), characterized in that: The device includes a control mechanism (2) and an actuation mechanism (3). The control mechanism (2) includes a vertical tube (201) located inside the protective shell (5). A set of electromagnetic coils (202) are symmetrically installed on the side of the vertical tube (201). The actuation mechanism (3) includes an iron block (301) that is slidably disposed inside the vertical tube (201) and located between the two electromagnetic coils (202). A connector (204) connected to the diaphragm (103) is installed on the lower side of the iron block (301). The control mechanism (2) also includes an adjustment component. The monitoring mechanism (4) is also provided. The monitoring mechanism (4) includes a groove (401) opened at the lower end of the connector (204) and aligned with the circular hole on the diaphragm (103). A piston (402) adapted to it is slidably arranged in the groove (401). A spring (403) is connected between the piston (402) and the top surface of the groove (401). The monitoring mechanism (4) also includes a display component. The adjustment assembly includes an upper seat (205) that is slidably disposed inside the vertical tube (201) and above the iron block (301), and a spring (206) is connected between the upper seat (205) and the iron block (301). A hexagonal threaded seat (207) is rotatably mounted on the upper center of the protective shell (5). A screw (208) that is compatible with the threaded hole of the hexagonal threaded seat (207) and extends to the inside of the protective shell (5) and connects with the upper seat (205). An annular seat is installed on the inner wall of the vertical tube (201) below the upper seat (205). When the upper seat (205) contacts the annular seat, the diaphragm (103) seals the upper port of the L-shaped connecting groove (106). The protective shell (5) is also equipped with a controller, which includes a relay module. The relay module switches the power supply circuit of the upper and lower electromagnetic coils (202). When the upper seat (205) contacts the annular seat, the solenoid valve is a normally closed solenoid valve, and at this time only the upper solenoid coil (202) is energized; When the upper seat (205) contacts the inner top surface of the protective shell (5), the solenoid valve is a normally open solenoid valve, and at this time only the lower solenoid coil (202) is energized.

2. A DC solenoid valve with signal according to claim 1, characterized in that: The valve body mechanism (1) also includes a medium inlet (104) and a medium outlet (105) located on the side of the valve body (101) and opposite to each other, and a connecting flange (108) is provided at each port of the medium inlet (104) and the medium outlet (105).

3. A DC solenoid valve with signal according to claim 2, characterized in that: The inner bottom surface of the upper cavity (102) is provided with an L-shaped connecting groove (106) that is aligned with the groove (401) and bends toward the medium inlet (104) and communicates with it. The inner bottom surface of the upper cavity (102) is provided with an outlet groove (107) that communicates with the medium outlet (105) on one side at the port of the L-shaped connecting groove (106).

4. A DC solenoid valve with signal according to claim 1, characterized in that: Two limiting pieces (209) are symmetrically installed on the inner wall of the vertical tube (201). The sides of the iron block (301), the upper seat (205) and the connecting piece (204) are all provided with a set of limiting grooves (210) that are compatible with the limiting pieces (209).

5. A DC solenoid valve with signal according to claim 1, characterized in that: The display assembly includes an extension rod (404) installed at the center of the lower side of the piston (402) and extending to the outside of the valve body (101). A vertical rod (405) is installed on one side of the extension rod (404) on the lower side of the valve body (101). A limiting plate (406) that slides on the vertical rod (405) is installed at the lower end of the extension rod (404). A scale with the same length as the groove (401) is provided on the side of the vertical rod (405) above the limiting plate (406).

6. A DC solenoid valve with signal according to claim 1, characterized in that: The moving mechanism (3) also includes an orifice (302) opened in the center of the iron block (301), and a set of movable plates (306) adapted to it are symmetrically arranged in the orifice (302), and a set of springs (307) are connected between the two movable plates (306) in the set.

7. A DC solenoid valve with signal according to claim 6, characterized in that: The side of the iron block (301) has a through hole (304) aligned with each movable plate (306) on one side. A clip (305) that is adapted to and connected to the movable plate (306) on the same side is slidably installed in the through hole (304). The side of the vertical tube (201) has a fixing hole (211) aligned with each through hole (304) on one side.

8. A DC solenoid valve with signal according to claim 6, characterized in that: The lower end of the groove (401) is provided with a limiting ring that is compatible with the piston (402). A set of connecting pipes (407) with their upper ends connected to the orifice groove (302) are symmetrically installed on the inner wall of the groove (401) near the upper end. The connection is located between two movable plates (306). Hydraulic oil is filled between the two movable plates (306) of the groove (401) and the orifice groove (302).

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