Electromagnetic detection type electromagnetic valve

Abstract

The utility model provides an electromagnetic detection type electromagnetic valve in the technical field of electromagnetic valves, which comprises a valve body provided with a water inlet bin, a water outlet bin and a sealing bin; a water inlet is formed in the end of the water outlet bin, the water inlet bin communicates with the water outlet bin through the water inlet, and the water inlet is located in the sealing bin. The annular pressing plate is arranged at the end part of the water inlet bin; the loose joint is connected with the threaded section at the end part of the water inlet bin and covers the annular pressing plate; the mounting bracket is arranged on the outer wall of the water outlet bin; the Hall sensor is installed on the installation support, and the detection end is tightly attached to the outer wall of the water outlet bin; the on-off module is detachably connected with the sealing bin; the fixing piece is arranged in the water outlet bin, and the middle of the fixing piece extends towards the water inlet bin to form a fixing rod; a protrusion used for clamping is annularly arranged at the tail end of the fixing rod. The annular magnet is arranged on the fixed rod in a sleeving manner and is clamped through the bulge; the spiral spring is arranged on the fixing rod in a sleeving mode and located between the fixing piece and the annular magnet. The electromagnetic valve has the advantage that the use reliability of the electromagnetic valve is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnetic detection type electromagnetic valve. Background Technology

[0002] A solenoid valve is an electromagnetically controlled device used in automation to control fluids, such as adjusting the direction, flow rate, speed, and other parameters of media flow. It is an actuator. The working principle of a solenoid valve is that when energized, an electromagnetic coil generates electromagnetic force to lift the closing element from the valve seat, thus opening the valve; when de-energized, the electromagnetic force disappears, and a spring presses the closing element back onto the valve seat, closing the valve.

[0003] Traditional solenoid valves perform corresponding actions (opening or closing) when energized, but do not provide feedback on whether the corresponding action has been performed. That is, the controller can remotely control the solenoid valve, but it is unclear whether the solenoid valve has performed the action. This is not conducive to remote monitoring and fault diagnosis of solenoid valves, and it is possible that the solenoid valve malfunctions will go undetected for a long time.

[0004] Therefore, how to provide an electromagnetic detection type solenoid valve to improve the reliability of solenoid valve use has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an electromagnetic detection type solenoid valve to improve the reliability of solenoid valve use.

[0006] This utility model is implemented as follows: an electromagnetic detection type solenoid valve, comprising:

[0007] A valve body is provided with an inlet chamber, an outlet chamber and a sealing chamber; the outlet chamber is provided with an inlet at its end, the inlet chamber is connected to the outlet chamber through the inlet, and the inlet is located inside the sealing chamber;

[0008] An annular pressure plate is provided at the end of the water inlet chamber;

[0009] A union is connected to the threaded section at the end of the water inlet chamber, covering the annular pressure plate, and the outer wall is provided with several anti-slip grooves;

[0010] A mounting bracket is installed on the outer wall of the water outlet chamber;

[0011] A Hall sensor is mounted on the mounting bracket, with its detection end in close contact with the outer wall of the water outlet chamber;

[0012] A switching module is detachably connected to the sealed chamber;

[0013] A hollow-structured fastener is provided inside the water outlet chamber, with a fixing rod extending from the center toward the water inlet chamber; the end of the fixing rod is provided with a protrusion for locking.

[0014] A ring-shaped magnet is fitted onto the fixed rod and is locked in place by the protrusion.

[0015] A helical spring is sleeved on the fixed rod and located between the fixed member and the annular magnet.

[0016] Furthermore, the on / off module includes:

[0017] A sealing diaphragm has a pressure relief hole in the middle and a pilot hole at the edge; the sealing diaphragm covers the water inlet, and the pilot hole is connected to the water inlet chamber.

[0018] A coil frame has a movable iron core compartment at the lower middle part and a movable magnet compartment at the upper middle part. An electromagnetic coil is wound in the middle, and the bottom end is detachably connected to the sealed compartment.

[0019] A movable iron core is located inside the movable iron core chamber, and its bottom end covers the pressure relief hole;

[0020] A variable diameter spring is sleeved on the moving iron core and abuts against the bottom end of the coil frame;

[0021] A magnet is installed inside the movable magnet compartment;

[0022] A spring of equal diameter, one end of which abuts against the coil frame and the other end of which abuts against the magnet;

[0023] A coil cover is fitted over the coil frame and is detachably connected to the coil frame.

[0024] Furthermore, the bottom end of the moving iron core is tapered to match the pressure relief hole.

[0025] Furthermore, the coil cover and coil frame are detachably connected to the sealing chamber by screws.

[0026] The advantages of this utility model are:

[0027] 1. By installing a mounting bracket on the outer wall of the outlet chamber of the valve body, a Hall sensor is installed on the mounting bracket with its detection end in close contact with the outer wall of the outlet chamber. Inside the outlet chamber, there is a hollow structure fixing component with a fixing rod extending from the middle of the fixing component toward the inlet chamber. A helical spring and a ring magnet are installed on the fixing rod. When water flows through the outlet chamber, it will drive the ring magnet to compress the helical spring. The displacement of the magnet will change the magnetic field strength sensed by the Hall sensor. The on / off state of the solenoid valve can be known by the magnetic field strength sensed by the Hall sensor, so as to remotely monitor the solenoid valve and diagnose faults, thereby greatly improving the reliability of the solenoid valve.

[0028] 2. The electromagnetic structure of the solenoid valve, consisting of a Hall sensor, a helical spring, and a ring magnet, is used to detect the on / off state of the solenoid valve. This structure is not only simple but also applicable to both water and air flow scenarios, offering strong compatibility.

[0029] 3. By setting up a ring magnet to change the magnetic field strength sensed by the Hall sensor through a horizontal displacement structure, compared with a vertical displacement structure, it can detect small water flows and has a wider range of applications. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the structure of an electromagnetic detection type solenoid valve according to this utility model.

[0032] Figure 2 This is a front view of an electromagnetic detection type solenoid valve according to this utility model.

[0033] Figure 3 This is a top view of an electromagnetic detection type solenoid valve according to this utility model.

[0034] Figure 4 This is a bottom view of an electromagnetic detection type solenoid valve according to this utility model.

[0035] Figure 5 This is a right view of an electromagnetic detection type solenoid valve according to this utility model.

[0036] Figure 6 This is a left view of an electromagnetic detection type solenoid valve according to this utility model.

[0037] Figure 7 This is one of the exploded views of an electromagnetic detection type solenoid valve according to this utility model.

[0038] Figure 8 This is the second exploded view of an electromagnetic detection type solenoid valve according to this utility model.

[0039] Figure 9This is a cross-sectional view of an electromagnetic detection type solenoid valve according to this utility model.

[0040] Marker explanation:

[0041] 100-An electromagnetic detection type solenoid valve, 1-Valve body, 2-Annular pressure plate, 3-Union, 4-Mounting bracket, 5-Hall sensor, 6-On / off module, 7-Fixing component, 8-Annular magnet, 9-Helical spring, 11-Inlet chamber, 12-Outlet chamber, 13-Sealing chamber, 111-Threaded section, 121-Inlet, 31-Anti-slip texture, 61-Sealing diaphragm, 62-Coil frame, 63-Moving iron core, 64-Variable diameter spring, 65-Magnet, 66-Equal diameter spring, 67-Coil cover, 611-Pressure relief hole, 612-Pilot hole, 621-Iron core movable chamber, 622-Magnet movable chamber, 71-Fixing rod, 72-Protrusion. Detailed Implementation

[0042] This utility model embodiment provides an electromagnetic detection type solenoid valve, which solves the technical problem in the prior art where the solenoid valve performs a corresponding action when energized but does not provide feedback on whether the corresponding action has been performed, which is not conducive to the remote monitoring and fault diagnosis of the solenoid valve. This achieves the technical effect of greatly improving the reliability of the solenoid valve.

[0043] The technical solution in this utility model embodiment is to solve the above problems. The overall idea is as follows: the magnetic field strength sensed by the Hall sensor 5 is changed by the displacement of the annular magnet 8 under the impact of water flow and the compression of the spiral spring 9. The opening and closing state of the solenoid valve 100 is determined by the magnetic field strength sensed by the Hall sensor 5, so as to remotely monitor and diagnose faults of the solenoid valve 100, thereby improving the reliability of the solenoid valve 100.

[0044] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0045] Please refer to Figures 1 to 9 As shown, a preferred embodiment of the electromagnetic detection type solenoid valve of this utility model includes:

[0046] A valve body 1 includes an inlet chamber 11, an outlet chamber 12, and a sealing chamber 13. The outlet chamber 12 has an inlet 121 at its end, and the inlet chamber 11 communicates with the outlet chamber 12 via the inlet 121. The inlet 121 is located within the sealing chamber 13. Both the inlet chamber 11 and the outlet chamber 12 have a threaded section 111 at their ends. The flow of water can be controlled by opening and closing the inlet 121. The sealing chamber 13 is located in the middle of the valve body 1.

[0047] An annular pressure plate 2 is provided at the end of the water inlet chamber 11;

[0048] A live joint 3 is connected to the threaded section 111 at the end of the water inlet 11, covering the annular pressure plate 2, and the outer wall is provided with several anti-slip textures 31;

[0049] A mounting bracket 4 is installed on the outer wall of the water outlet chamber 12;

[0050] A Hall sensor 5 is mounted on the mounting bracket 4, with its detection end in close contact with the outer wall of the water outlet chamber 12. It is used to detect the presence or absence of water flow. The electric field distribution of the Hall sensor 5 differs when there is water and when there is no water (change in medium).

[0051] A switch module 6 is detachably connected to the sealing chamber 13 and is used to switch the water flow of the solenoid valve 100.

[0052] A hollowed-out fastener 7 is provided inside the water outlet chamber 12, with a fixing rod 71 extending from the middle toward the water inlet chamber 11; the end of the fixing rod 71 is provided with a protrusion 72 for locking.

[0053] A ring magnet 8 is sleeved on the fixing rod 71 and is locked in place by the protrusion 72; a helical spring 9 is sleeved on the fixing rod 71 and is located between the fixing member 7 and the ring magnet 8.

[0054] The on / off module 6 includes:

[0055] A sealing diaphragm 61 has a pressure relief hole 611 in the middle and a pilot hole 612 at the edge. The diameter of the pressure relief hole 611 is larger than that of the pilot hole 612. The sealing diaphragm 61 covers the water inlet 121 and is used to open or close the water inlet 121. The pilot hole 612 is connected to the water inlet chamber 11.

[0056] A coil frame 62 has a movable iron core compartment 621 at the lower end of the middle section and a movable magnet compartment 622 at the upper end of the middle section. An electromagnetic coil (not shown) is wound in the middle section, and the bottom end is detachably connected to the sealed compartment 13.

[0057] A movable iron core 63 is disposed in the movable iron core chamber 621, and its bottom end covers the pressure relief hole 611, that is, the bottom end is pressed against the pressure relief hole 611 to seal the pressure relief hole 611.

[0058] A variable diameter spring 64 is sleeved on the moving iron core 63 and abuts against the bottom end of the coil frame 62 to provide elastic force for the reset of the moving iron core 63;

[0059] A magnet 65 is disposed in the magnet movable chamber 622 and is used to provide magnetic attraction force for lifting the moving iron core 63;

[0060] A spring 66 of equal diameter, one end of which abuts against the coil frame 62 and the other end of which abuts against the magnet 65, is used to provide elastic force for the magnet 65 to return to its original position.

[0061] A coil cover 67 is fitted over the coil frame 62 and is detachably connected to the coil frame 62 to provide protection.

[0062] The bottom end of the moving iron core 63 is tapered and matches the pressure relief hole 611.

[0063] The coil cover 67 and the coil frame 62 are detachably connected to the sealing chamber 13 by screws (not shown) to improve the reliability of the connection.

[0064] Working principle of this utility model:

[0065] Boiling water: After the electromagnetic coil is energized, the magnetic force generated by the electromagnetic coil attracts the magnet 65 and the moving iron core 63 towards the middle to compress the equal diameter spring 66 and the variable diameter spring 64. During the compression process, the magnet 65 assists in attracting the moving iron core 63 to accelerate its upward movement. As the moving iron core 63 is lifted, it opens the pressure relief hole 611 of the sealing diaphragm 62, allowing the water in the inlet chamber 11 to first flow into the sealing chamber 13 through the pilot hole 612, and then flow into the outlet chamber 12 through the pressure relief hole 611 for water discharge. When the Hall sensor 5 does not detect a change in the magnetic field strength of the ring magnet 8 (the magnetic field strength does not decrease), it indicates that the on / off module 6 is faulty.

[0066] Water shut-off: After the electromagnetic coil is de-energized, the attractive force exerted by the electromagnetic coil on the magnet 65 and the moving iron core 63 disappears. The magnet 65 and the moving iron core 63 return to their original positions under the action of the equal diameter spring 66 and the variable diameter spring 64, respectively. During the return process, the moving iron core 63 is pressed down to seal the pressure relief hole 611, thereby stopping the water flow. When the Hall sensor 5 does not detect a change in the magnetic field strength of the ring magnet 8 (the magnetic field strength does not increase), it indicates that the on / off module 6 is faulty.

[0067] In summary, the advantages of this utility model are as follows:

[0068] 1. By installing a mounting bracket on the outer wall of the outlet chamber of the valve body, a Hall sensor is installed on the mounting bracket with its detection end in close contact with the outer wall of the outlet chamber. Inside the outlet chamber, there is a hollow structure fixing component with a fixing rod extending from the middle of the fixing component toward the inlet chamber. A helical spring and a ring magnet are installed on the fixing rod. When water flows through the outlet chamber, it will drive the ring magnet to compress the helical spring. The displacement of the magnet will change the magnetic field strength sensed by the Hall sensor. The on / off state of the solenoid valve can be known by the magnetic field strength sensed by the Hall sensor, so as to remotely monitor the solenoid valve and diagnose faults, thereby greatly improving the reliability of the solenoid valve.

[0069] 2. The electromagnetic structure of the solenoid valve, consisting of a Hall sensor, a helical spring, and a ring magnet, is used to detect the on / off state of the solenoid valve. This structure is not only simple but also applicable to both water and air flow scenarios, offering strong compatibility.

[0070] 3. By setting up a ring magnet to change the magnetic field strength sensed by the Hall sensor through a horizontal displacement structure, compared with a vertical displacement structure, it can detect small water flows and has a wider range of applications.

[0071] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An electromagnetic detection type solenoid valve, characterized in that: include: A valve body is provided with an inlet chamber, an outlet chamber and a sealing chamber; the outlet chamber is provided with an inlet at its end, the inlet chamber is connected to the outlet chamber through the inlet, and the inlet is located inside the sealing chamber; An annular pressure plate is provided at the end of the water inlet chamber; A union is connected to the threaded section at the end of the water inlet chamber, covering the annular pressure plate, and the outer wall is provided with several anti-slip grooves; A mounting bracket is installed on the outer wall of the water outlet chamber; A Hall sensor is mounted on the mounting bracket, with its detection end in close contact with the outer wall of the water outlet chamber; A switching module is detachably connected to the sealed chamber; A hollow-structured fastener is provided inside the water outlet chamber, with a fixing rod extending from the center toward the water inlet chamber; the end of the fixing rod is provided with a protrusion for locking. A ring-shaped magnet is fitted onto the fixed rod and is locked in place by the protrusion. A helical spring is sleeved on the fixed rod and located between the fixed member and the annular magnet.

2. The electromagnetic detection type solenoid valve as described in claim 1, characterized in that: The on / off module includes: A sealing diaphragm has a pressure relief hole in the middle and a pilot hole at the edge; the sealing diaphragm covers the water inlet, and the pilot hole is connected to the water inlet chamber. A coil frame has a movable iron core compartment at the lower middle part and a movable magnet compartment at the upper middle part. An electromagnetic coil is wound in the middle, and the bottom end is detachably connected to the sealed compartment. A movable iron core is located inside the movable iron core chamber, and its bottom end covers the pressure relief hole; A variable diameter spring is sleeved on the moving iron core and abuts against the bottom end of the coil frame; A magnet is installed inside the movable magnet compartment; A spring of equal diameter, one end of which abuts against the coil frame and the other end of which abuts against the magnet; A coil cover is fitted over the coil frame and is detachably connected to the coil frame.

3. The electromagnetic detection type solenoid valve as described in claim 2, characterized in that: The bottom end of the moving iron core is tapered to match the pressure relief hole.

4. The electromagnetic detection type solenoid valve as described in claim 2, characterized in that: The coil cover and coil frame are detachably connected to the sealing chamber by screws.

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