Electromagnetic force measuring device for electromagnetic valve

Abstract

The invention discloses an electromagnetic force measuring device for an electromagnetic valve. The electromagnetic force measuring device comprises a seat body, a force measuring rod and a force measuring part, the first end of the seat body is used for being coaxially and fixedly connected with a stator of the electromagnetic valve, an adjusting gasket is arranged between the end face of the first end of the seat body and the stator, and the end face of the first end of the seat body abuts against the stator through the adjusting gasket; the first end of the force measuring rod is coaxially and fixedly connected with the seat body, the second end of the force measuring rod extends out of the seat body from the first end of the seat body, and the second end of the force measuring rod is used for being fixedly connected with a rotor of the electromagnetic valve; the force measuring part is arranged on the force measuring rod, when electromagnetic attraction force is generated between the stator and the rotor, the electromagnetic attraction force acts on the force measuring rod, and the force measuring part is used for measuring the electromagnetic attraction force. According to the scheme, it can be guaranteed that the force measuring rod is coaxial with the rotor and the stator, the axial gap is controlled by adjusting the thickness of the gasket, the actual magnetic flux state can be restored, and electromagnetic force measurement is more accurate.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to a solenoid valve electromagnetic force measuring device. Background Art

[0002] Traditional electromagnetic force measurement devices for solenoid valves usually install the actuator and armature of the solenoid valve separately, then use a fine-tuning mechanism to adjust the axial gap (air gap) between the two, and use a force sensor to measure the electromagnetic force. For solenoid valves with an integrated design, traditional measurement devices are difficult to ensure centering accuracy, difficult to simulate actual axial gaps and magnetic paths, and the electromagnetic force measurement is not accurate enough. Summary of the invention

[0003] The present application provides a solenoid valve electromagnetic force measurement device to improve the accuracy of electromagnetic force measurement.

[0004] The electromagnetic force measuring device of an electromagnetic valve provided in the present application comprises a seat body, a force measuring rod and a force measuring part. The first end of the seat body is used to be coaxial and fixedly connected with the stator of the electromagnetic valve, and an adjustment gasket is arranged between the end face of the first end of the seat body and the stator, and the end face of the first end of the seat body abuts against the stator through the adjustment gasket. The first end of the force measuring rod is coaxial and fixedly connected with the seat body, and the second end of the force measuring rod extends out of the seat body from the first end of the seat body, and the second end of the force measuring rod is used to be fixedly connected with the mover of the electromagnetic valve. The force measuring part is arranged on the force measuring rod, and when electromagnetic attraction is generated between the stator and the mover, the electromagnetic attraction acts on the force measuring rod, and the force measuring part is used to measure the electromagnetic attraction.

[0005] In a specific possible implementation scheme, the first end of the seat body is used to extend into the stator, the outer wall of the first end of the seat body is provided with a first threaded structure, and the inner wall of the stator is provided with a second threaded structure, and the first threaded structure is used to cooperate with the second threaded structure to coaxially and fixedly connect the seat body and the stator.

[0006] In a specific possible implementation scheme, the seat body is provided with a positioning hole, the positioning hole is coaxially arranged with the seat body, the positioning hole extends from the first end of the seat body to the second end of the seat body, and the positioning hole is provided with a third thread structure. The outer wall of the first end of the force measuring rod is provided with a fourth thread structure, and the fourth thread structure cooperates with the third thread structure to coaxially and fixedly connect the force measuring rod and the seat body.

[0007] In a specific possible implementation manner, the adjustment gasket is an annular structure, and the adjustment gasket is coaxially arranged with the seat body.

[0008] In a specific possible implementation scheme, the seat body includes a first part and a second part. The first end of the first part is used to extend into the stator and is coaxial and fixedly connected to the stator, and the second end of the first part is fixedly connected to the first end of the second part; the positioning hole extends from the first end of the first part to the second end of the first part. In the axial direction of the seat body, the projection area of ​​the second part is larger than the projection area of ​​the first part; the second part is provided with a mounting hole, which extends from the second end of the second part to the first end of the second part, and the mounting hole is connected to the positioning hole.

[0009] In a specific possible implementation manner, the mounting hole is coaxially arranged with the positioning hole, and the second part is coaxially arranged with the first part.

[0010] In a specific possible implementation scheme, the force measuring rod includes a head and a body, the first end of the body is fixedly connected to the head, and the second end of the body is used to be fixedly connected to the mover; in the axial direction of the force measuring rod, the projected area of ​​the head is larger than the projected area of ​​the body. The aperture of the mounting hole is larger than the aperture of the positioning hole; the radial dimension of the head is larger than the aperture of the positioning hole, and the radial dimension of the head is smaller than or equal to the aperture of the mounting hole. The force measuring rod passes through the first part through the positioning hole, the head is located in the mounting hole, the head abuts against the second end of the first part, and the second end of the body extends out of the first part from the first end of the first part to be fixedly connected to the mover.

[0011] In a specific possible implementation, the mover is provided with a connecting hole, and in the axial direction of the mover, the connecting hole extends from the first end of the mover to the second end of the mover; the connecting hole is coaxially arranged with the mover; and the second end of the mover is away from the seat body. The force measuring rod is used to pass through the mover through the connecting hole, and the force measuring rod is coaxial with the connecting hole, and the second end of the force measuring rod extends out of the mover from the second end of the mover, and the second end of the force measuring rod is used to be fixedly connected with the mover through a locking member.

[0012] In a specific possible implementation, the second end of the force measuring rod is provided with a threaded hole. The locking member is a screw structure, one end of the locking member abuts against the second end of the mover, and the other end of the locking member is screwed into the threaded hole, so that the locking member is fixedly connected to the force measuring rod.

[0013] In a specific possible implementation manner, the force measuring portion is arranged between the first end and the second end of the force measuring rod. There are a plurality of force measuring portions, and the plurality of force measuring portions are arranged at intervals in the circumferential direction of the force measuring rod.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] By setting a force measuring rod to simulate the plunger actually connected to the mover, the seat body and the stator are coaxial and fixedly connected, and the force measuring rod and the seat body are coaxial and fixedly connected, so that the force measuring rod and the stator are coaxial. In this way, it can be ensured that the force measuring rod is coaxial with the mover and the stator, and the actual application of the solenoid valve can be simulated, which is more in line with the actual installation state of the solenoid valve. The device is more practical and accurate in measuring the electromagnetic force.

[0016] In addition, the seat body is coaxial with the stator and fixedly connected, and the force measuring rod is coaxial with the seat body and fixedly connected, so that the force measuring rod is coaxial with the stator and the force measuring rod is coaxial with the mover. In this way, when using this device for measurement, there is no need to adjust the centering of the force measuring rod. The force measuring rod can be naturally centered, which can reduce the installation and adjustment requirements when the measuring device is used.

[0017] At the same time, the axial gap between the mover and the stator can be controlled by using adjustment gaskets of different thicknesses, the axial gap can be accurately restored, and the electromagnetic force under a specific axial gap can be accurately measured. In addition, in actual applications, the magnetic field generated by the solenoid valve when it is energized will pass through the plunger. This device uses a force measuring rod to simulate the plunger actually connected to the mover, which is closer to the actual magnetic path in actual applications, can restore the actual magnetic flux state, can reduce the electromagnetic force measurement error, and improve the accuracy of electromagnetic force measurement.

[0018] In addition, the force measuring part is integrated on the force measuring rod, and there is no need to set up a separate force sensor. The setting is relatively simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a possible solenoid valve application scenario is shown;

[0020] Figure 2 A schematic structural diagram of the electromagnetic force measuring device of an electromagnetic valve provided in the present application is shown.

[0021] Reference numerals:

[0022] 1- nut; 2- electromagnetic coil; 3- spring; 4- stator; 5- mover; 6- plunger; 7- valve body; 8- valve seat; 9- seat body; 10- lead wire; 11- adjustment gasket; 12- force measuring rod; 13- force measuring part; 14- locking piece; 91- first part; 92- second part; 121- head; 122- body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, the example implementation can be implemented in various forms and should not be construed as being limited to the implementations set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all described with reference to the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0024] The following description sets forth specific details to facilitate understanding of the present application, but the embodiments of the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0025] First refer to Figure 1 , Figure 1 A schematic diagram of a possible solenoid valve application scenario is shown. Figure 1 As shown, the solenoid valve mainly includes a stator 4 and a mover 5. The stator 4 can also be generally referred to as a static iron core, and the mover 5 can also be generally referred to as a moving iron core. In practical applications, the electromagnetic coil 2 is fixed to the outer wall of the stator 4 by a nut 1, and the electromagnetic coil 2 and the stator 4 serve as the main components of the armature of the solenoid valve. The mover 5 is located in the stator 4, the mover 5 is coaxial with the stator 4, and a spring 3 is arranged between the mover 5 and the stator 4. The valve body 7 is coaxially arranged with the stator 4, and the plunger 6 is coaxially arranged with the valve body 7, that is, the plunger 6 is coaxial with the stator 4, ensuring that the plunger 6 is coaxial with the mover 5. A through hole is arranged on the side wall of the valve body 7, and a valve seat 8 is arranged at the end of the valve body 7, and a through hole is arranged on the valve seat 8. When the electromagnetic coil 2 is not energized, the mover 5 moves away from the stator 4 under the elastic force of the spring 3, and the plunger 6 abuts against the valve seat 8. The plunger 6 blocks the through hole on the valve seat 8, and the through hole is not connected to the through hole on the side wall of the valve body 7. When the electromagnetic valve is set in the fluid passage, the electromagnetic valve can block the fluid passage. When the electromagnetic coil 2 is energized, an electromagnetic suction force is generated between the stator 4 and the mover 5. The mover 5 moves toward the stator 4 under the action of the electromagnetic suction force. The mover 5 drives the plunger 6 to move. The plunger 6 avoids the through hole on the valve seat 8, and the through hole is connected to the through hole on the side wall of the valve body 7. The electromagnetic valve no longer blocks the fluid passage.

[0026] Figure 2 The structure diagram of the electromagnetic force measuring device of the electromagnetic valve provided by the present application is shown. Figure 2As shown, the electromagnetic force measuring device of the solenoid valve provided in the embodiment of the present application may include a seat body 9, a force measuring rod 12 and a force measuring part 13. During actual measurement, the first end of the seat body 9 may be coaxial and fixedly connected with the stator 4 of the solenoid valve, and an adjustment gasket 11 is provided between the end face of the first end of the seat body 9 and the end face on the stator 4 for actually abutting against the valve body 7, and the end face of the first end of the seat body 9 abuts against the end face on the stator 4 for actually abutting against the valve body 7 through the adjustment gasket 11. The first end of the force measuring rod 12 is coaxial and fixedly connected with the seat body 9, and the second end of the force measuring rod 12 extends out of the seat body 9 from the first end of the seat body 9, and the second end of the force measuring rod 12 is fixedly connected with the mover 5 of the solenoid valve. The force measuring part 13 is provided on the force measuring rod 12, and when electromagnetic attraction is generated between the stator 4 and the mover 5, the electromagnetic attraction acts on the force measuring rod 12, and the force measuring part 13 can measure the electromagnetic attraction.

[0027] The electromagnetic force measuring device of an electromagnetic valve provided in the embodiment of the present application (hereinafter referred to as "this device") simulates the plunger 6 actually connected to the mover 5 by setting a force measuring rod 12, the seat body 9 is coaxial and fixedly connected to the stator 4, the force measuring rod 12 is coaxial and fixedly connected to the seat body 9, so that the force measuring rod 12 is coaxial with the stator 4, thereby ensuring that the force measuring rod 12 is coaxial with the mover 5 and the stator 4, and can simulate the actual application of the electromagnetic valve, which is more in line with the actual installation state of the electromagnetic valve. The device can measure the electromagnetic force more accurately.

[0028] In addition, the seat body 9 is coaxial with the stator 4 and fixedly connected, and the force measuring rod 12 is coaxial with the seat body 9 and fixedly connected, so that the force measuring rod 12 is coaxial with the stator 4, and the force measuring rod 12 is coaxial with the mover 5. In this way, when using the present device for measurement, there is no need to adjust the centering of the force measuring rod 12. The force measuring rod 12 can be naturally centered, which can reduce the installation and adjustment requirements when the measuring device is used.

[0029] At the same time, the axial gap between the mover 5 and the stator 4 can be controlled by using adjustment gaskets 11 of different thicknesses, the axial gap can be accurately restored, and the electromagnetic force under a specific axial gap can be accurately measured. Moreover, in actual applications, the magnetic field generated by the solenoid valve being energized will have magnetic flux lines passing through the plunger 6. The device uses a force measuring rod 12 to simulate the plunger 6 actually connected to the mover 5, which is closer to the actual magnetic path in actual applications, can restore the actual magnetic flux state, can reduce the electromagnetic force measurement error, and improve the accuracy of electromagnetic force measurement. In addition, the force measuring part 13 is integrated on the force measuring rod 12, and there is no need to set up a separate force sensor. The setting is relatively simple and easy to implement.

[0030] In a specific implementation, the force measuring part 13 may use a strain gauge, specifically, a 90° strain gauge, and the strain gauge may be attached to the surface of the force measuring rod 12. When the solenoid valve is energized, an electromagnetic attraction is generated between the stator 4 and the mover 5, and the mover 5 has a tendency to move toward the stator 4 under the action of the electromagnetic attraction. The electromagnetic attraction acts on the force measuring rod 12 in that the mover 5 applies an axial tension to the force measuring rod 12. At this time, the force measuring rod 12 is mechanically deformed, and the force measuring part 13 is mechanically deformed accordingly. The resistance value of the strain gauge changes accordingly, and the magnitude of the electromagnetic attraction is measured.

[0031] In a specific implementation, the force measuring part 13 is arranged between the first end and the second end of the force measuring rod 12. The force measuring part 13 may be multiple, for example, two, and the multiple force measuring parts 13 may be arranged at intervals in the circumferential direction of the force measuring rod 12. The multiple force measuring parts 13 jointly measure the electromagnetic force, and each force measuring part 13 is respectively located at a different position on the force measuring rod 12 to measure the electromagnetic force, which can improve the accuracy of the electromagnetic force measurement. The force measuring rod 12 may adopt a hollow structure. Specifically, the force measuring rod 12 may have a wiring hole arranged along the axial direction, and the lead wire 10 of the strain gauge may be led out of the force measuring rod 12 through the wiring hole, and then may be led out of the seat body 9 through the side hole on the seat body 9; and the force measuring rod 12 with a hollow structure is more likely to respond to the axial tension, more likely to produce mechanical deformation, and the force measuring part 13 is more accurate in measuring the electromagnetic suction force.

[0032] In specific implementation, the adjusting gasket 11 can be an annular structure, that is, the adjusting gasket 11 is a continuous structure in the circumferential direction of the seat body 9, and the adjusting gasket 11 is coaxially arranged with the seat body 9. In this way, it can be ensured that the seat body 9 and the stator 4 are continuously abutted through the adjusting gasket 11, the relative position of the seat body 9 and the stator 4 is more stable, the alignment of the force measuring rod 12 is more reliable, and the measurement result of the device is more accurate.

[0033] As a possible implementation manner, the first end of the seat body 9 can extend into the stator 4, the outer wall of the first end of the seat body 9 is provided with a first threaded structure, and the inner wall of the stator 4 is provided with a second threaded structure. The first threaded structure can cooperate with the second threaded structure to coaxially and fixedly connect the seat body 9 and the stator 4, thereby realizing the centering of the force measuring rod 12. The implementation method of the centering of the force measuring rod 12 is relatively simple and convenient.

[0034] In a specific implementation, the seat body 9 is provided with a positioning hole, the positioning hole is coaxially arranged with the seat body 9, the positioning hole extends from the first end of the seat body 9 to the second end of the seat body 9, and the positioning hole is provided with a third thread structure. The outer wall of the first end of the force measuring rod 12 is provided with a fourth thread structure, and the fourth thread structure cooperates with the third thread structure to coaxially and fixedly connect the force measuring rod 12 and the seat body 9. The force measuring rod 12 and the seat body 9 are coaxially and fixedly connected in a threaded connection manner, which is relatively simple to implement, has a high coaxiality, and is relatively stable in connection.

[0035] In a possible embodiment, the seat body 9 may include a first portion 91 and a second portion 92, and the second portion 92 and the first portion 91 may be coaxially arranged to facilitate the molding of the seat body 9 and the connection between the seat body 9 and the stator 4. The first portion 91 and the second portion 92 may be integrally formed. The first end of the first portion 91 may extend into the stator 4 and be coaxial and fixedly connected to the stator 4, and the second end of the first portion 91 may be fixedly connected to the first end of the second portion 92. The positioning hole may extend from the first end of the first portion 91 to the second end of the first portion 91, that is, the positioning hole may be a through hole arranged on the first portion 91.

[0036] In specific implementation, in the axial direction of the seat body 9, the projection area of ​​the second part 92 can be larger than the projection area of ​​the first part 91. The second part 92 is provided with a mounting hole, which extends from the second end of the second part 92 to the first end of the second part 92, and the mounting hole is connected with the positioning hole. During actual measurement, the force measuring rod 12 can be installed into the positioning hole through the mounting hole, and then connected to the mover 5, and the connection between the force measuring rod 12 and the mover 5 is relatively convenient. The mounting hole and the positioning hole are coaxially arranged, which is convenient for the force measuring rod 12 to enter the positioning hole from the mounting hole, and also convenient for the centering of the force measuring rod 12.

[0037] In actual configuration, the force measuring rod 12 may include a head 121 and a body 122, wherein the first end of the body 122 is fixedly connected to the head 121, and the second end of the body 122 is used to be fixedly connected to the mover 5. In the axial direction of the force measuring rod 12, the projected area of ​​the head 121 is larger than the projected area of ​​the body 122. The aperture of the mounting hole is larger than the aperture of the positioning hole; the radial dimension of the head 121 is larger than the aperture of the positioning hole, and the radial dimension of the head 121 is smaller than or equal to the aperture of the mounting hole. The force measuring rod 12 passes through the first part 91 through the positioning hole, wherein the head 121 may be located in the mounting hole, the head 121 abuts against the second end of the first part 91, and the second end of the body 122 may extend from the first end of the first part 91 to be fixedly connected to the mover 5, thereby improving the stability of the connection between the force measuring rod 12 and the seat body 9, and realizing the fixed connection between the force measuring rod 12 and the mover 5 at the same time.

[0038] In a possible specific implementation, the mover 5 is provided with a connecting hole, and in the axial direction of the mover 5, the connecting hole extends from the first end of the mover 5 to the second end of the mover 5. The connecting hole is coaxially arranged with the mover 5. The second end of the mover 5 is away from the seat body 9. The force measuring rod 12 can pass through the mover 5 through the connecting hole, and the force measuring rod 12 is coaxial with the connecting hole. Specifically, the radial dimension of the force measuring rod 12 is the same as the aperture of the connecting hole. More specifically, the radial dimension of the body 122 of the force measuring rod 12 is the same as the aperture of the connecting hole. The second end of the force measuring rod 12 extends out of the mover 5 from the second end of the mover 5, and the second end of the force measuring rod 12 can be fixedly connected to the mover 5 through the locking member 14, thereby realizing the fixed connection between the force measuring rod 12 and the mover 5. In specific implementation, the second end of the force measuring rod 12 can be provided with a threaded hole, and the locking piece 14 can be a screw structure. One end of the locking piece 14 abuts against the second end of the mover 5, and the other end of the locking piece 14 is screwed into the threaded hole to achieve a fixed connection between the locking piece 14 and the force measuring rod 12.

[0039] In another possible specific implementation, the connection hole of the mover 5 is provided with a fifth thread structure, the outer wall of the second end of the force measuring rod 12 is provided with a sixth thread structure, the second end of the force measuring rod 12 is screwed into the connection hole, and the sixth thread structure cooperates with the fifth thread structure to achieve a fixed connection between the force measuring rod 12 and the mover 5, and the fixed connection between the force measuring rod 12 and the mover 5 is relatively convenient. Specifically, the outer wall of the second end of the body 122 of the force measuring rod 12 is provided with a sixth thread structure, and the second end of the body 122 of the force measuring rod 12 is screwed into the connection hole to achieve a fixed connection between the force measuring rod 12 and the mover 5. At this time, the second end of the force measuring rod 12 can extend out of the second end of the mover 5, or it can not extend out of the second end of the mover 5, and the locking member 14 can be used to connect the second end of the force measuring rod 12 and the mover 5.

[0040] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited to the above embodiments. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope and spirit of the present application. If these changes and modifications fall within the scope of the claims of the present application and their equivalent technologies, the intention of the present application also includes these changes and modifications.

Claims

1. A solenoid valve electromagnetic force measuring device, characterized in that: It includes a seat body, a force measuring rod and a force measuring part; The first end of the seat body is used to be coaxially and fixedly connected to the stator of the solenoid valve, an adjustment gasket is provided between the end surface of the first end of the seat body and the stator, and the end surface of the first end of the seat body abuts against the stator through the adjustment gasket; The first end of the force measuring rod is coaxial with the seat body and fixedly connected, the second end of the force measuring rod extends out of the seat body from the first end of the seat body, and the second end of the force measuring rod is used to be fixedly connected to the mover of the solenoid valve; The force measuring part is arranged on the force measuring rod. When electromagnetic attraction is generated between the stator and the mover, the electromagnetic attraction acts on the force measuring rod. The force measuring part is used to measure the electromagnetic attraction.

2. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The first end of the seat body is used to extend into the stator, the outer wall of the first end of the seat body is provided with a first thread structure, and the inner wall of the stator is provided with a second thread structure, and the first thread structure is used to cooperate with the second thread structure to coaxially and fixedly connect the seat body and the stator.

3. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The seat body is provided with a positioning hole, the positioning hole is coaxially arranged with the seat body, the positioning hole extends from the first end of the seat body to the second end of the seat body, and the positioning hole is provided with a third thread structure; The outer wall of the first end of the force measuring rod is provided with a fourth thread structure, and the fourth thread structure cooperates with the third thread structure to coaxially and fixedly connect the force measuring rod and the seat body.

4. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The adjusting gasket is an annular structure, and the adjusting gasket is coaxially arranged with the seat body.

5. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The seat body comprises a first part and a second part; The first end of the first part is used to extend into the stator and be coaxial with the stator and fixedly connected, and the second end of the first part is fixedly connected to the first end of the second part; the positioning hole extends from the first end of the first part to the second end of the first part; In the axial direction of the seat body, the projection area of ​​the second part is larger than the projection area of ​​the first part; the second part is provided with a mounting hole, the mounting hole extends from the second end of the second part to the first end of the second part, and the mounting hole is connected to the positioning hole.

6. The electromagnetic force measuring device of an electromagnetic valve according to claim 5, characterized in that: The mounting hole is coaxially arranged with the positioning hole; The second portion is coaxially arranged with the first portion.

7. The electromagnetic force measuring device of an electromagnetic valve according to claim 5, characterized in that: The force measuring rod comprises a head and a body, the first end of the body is fixedly connected to the head, and the second end of the body is used to be fixedly connected to the mover; in the axial direction of the force measuring rod, the projected area of ​​the head is larger than the projected area of ​​the body; The diameter of the mounting hole is larger than the diameter of the positioning hole; the radial dimension of the head is larger than the diameter of the positioning hole, and the radial dimension of the head is smaller than or equal to the diameter of the mounting hole; The force measuring rod passes through the first part through the positioning hole, the head is located in the mounting hole, the head is abutted against the second end of the first part, and the second end of the body extends out of the first part from the first end of the first part to be fixedly connected with the mover.

8. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The mover is provided with a connecting hole, and in the axial direction of the mover, the connecting hole extends from the first end of the mover to the second end of the mover; the connecting hole is coaxially arranged with the mover; the second end of the mover is away from the seat body; The force measuring rod is used to pass through the mover through the connecting hole, and the force measuring rod is coaxial with the connecting hole. The second end of the force measuring rod extends out of the mover from the second end of the mover, and the second end of the force measuring rod is used to be fixedly connected to the mover through a locking member.

9. The electromagnetic force measuring device of an electromagnetic valve according to claim 8, characterized in that: The second end of the force measuring rod is provided with a threaded hole; The locking member is a screw structure, one end of the locking member abuts against the second end of the mover, and the other end of the locking member is screwed into the threaded hole to fix the locking member and the force measuring rod.

10. The electromagnetic force measuring device of an electromagnetic valve according to claim 1, characterized in that: The force measuring part is arranged between the first end and the second end of the force measuring rod; There are a plurality of force measuring parts, and the plurality of force measuring parts are arranged at intervals in the circumferential direction of the force measuring rod.

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