Valve core displacement detection device for high-frequency response electromagnetic valve

Abstract

The utility model relates to solenoid valve detection technical field especially is high -frequency response solenoid valve's valve core displacement detection device, including valve core detection mechanism, the valve core detection mechanism is installed with solenoid valve, the valve core detection mechanism is installed with displacement detection mechanism, the valve core detection mechanism includes the base, the outer surface fixed connection of base has the motor, the output fixed connection of motor has the screw rod, the outer surface of screw rod is installed with the moving plate, the outer surface fixed connection of moving plate has the fixed column, the end fixed connection of fixed column has the electrode piece, the solenoid valve includes the valve body, the valve body places inside the base, the inside of valve body is provided with the valve core, the position of fixed column corresponds with the position of valve core. The utility model provides a kind of equipment that can detect the valve core displacement state of high -frequency response solenoid valve.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve testing, and in particular to a valve core displacement detection device for high-frequency response solenoid valves. Background Technology

[0002] To ensure that the valve core moves precisely according to the control command, and thus to guarantee the stability, safety and reliability of the entire fluid control system, it is necessary to detect the displacement of the solenoid valve core to avoid equipment failure caused by problems such as valve core jamming or displacement.

[0003] In production, solenoid valve spool displacement detection is a critical quality control step. This involves detecting the spool's displacement accuracy and response speed under different voltages and pressures, verifying whether it conforms to the design stroke (e.g., 0.1-5mm), and identifying issues such as jamming and overshoot. Defective products are eliminated to ensure that the solenoid valve displacement at the factory matches the control commands, preventing equipment malfunctions due to abnormal spool displacement after installation, and ensuring stable performance of batch products. Utility Model Content

[0004] In view of this, the present invention provides a valve core displacement detection device for a high-frequency response solenoid valve. The main technical problem to be solved is: to provide a device capable of detecting the valve core displacement state of a high-frequency response solenoid valve.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a valve core displacement detection device for a high-frequency response solenoid valve, comprising a valve core detection mechanism, a solenoid valve installed inside the valve core detection mechanism, a displacement detection mechanism installed on the valve core detection mechanism, the valve core detection mechanism comprising a base, a motor fixedly connected to the outer surface of the base, a lead screw fixedly connected to the output end of the motor, a movable plate installed on the outer surface of the lead screw, a fixed column fixedly connected to the outer surface of the movable plate, an electrode plate fixedly connected to the end of the fixed column, the solenoid valve comprising a valve body placed inside the base, a valve core disposed inside the valve body, and the position of the fixed column corresponding to the position of the valve core.

[0006] By adopting the above technical solution, the motor drives the lead screw to rotate, which in turn drives the moving plate to move linearly along the guide rod. This allows the electrode plate at the end of the fixed column to be in contact with the valve core when the valve core stops. The valve core connects the two electrode plates, converting the position of the valve core into an electrical signal that can be detected by the first wire, thereby determining the position of the valve core.

[0007] As a further description of the above technical solution:

[0008] A first wire is installed inside the fixing column, and the first wire is electrically connected to the electrode plate.

[0009] By adopting the above technical solution, it is possible to determine whether the electrode plate is in contact with the valve core by detecting whether the circuit inside the first wire is connected.

[0010] As a further description of the above technical solution:

[0011] A guide rod is fixedly connected inside the base, and the movable plate is mounted on the guide rod.

[0012] By adopting the above technical solution, the moving plate is moved with the assistance of a guide rod.

[0013] As a further description of the above technical solution:

[0014] The displacement detection mechanism includes a movable rod, which is installed inside a movable plate. A resistor block is fixedly connected to the outer surface of the movable rod, and a second wire is fixedly connected to the back of the movable rod.

[0015] By adopting the above technical solution and cooperating with the sleeve, the valve core displacement state can be converted into an electrical signal for detection.

[0016] As a further description of the above technical solution:

[0017] A sleeve is fixedly connected to the surface of the movable plate. The inner surface of the sleeve is in contact with the outer surface of the resistor block. A third wire is fixedly connected to the outer surface of the sleeve.

[0018] By adopting the above technical solution, when in use, the motor controls the movement of the moving plate, so that the electrode plate is in contact with the valve core. At this time, the sleeve will move together with the moving plate. During the movement, the sleeve will come into contact with different areas of the resistor block on the moving rod, which will change the resistance value and form a measurable electrical signal circuit through the second wire and the third wire.

[0019] As a further description of the above technical solution:

[0020] A baffle is fixedly connected to the outer surface of the moving rod, and a spring is installed between the baffle and the base.

[0021] By adopting the above technical solution, the spring can push the moving rod forward, allowing the arc-shaped plate to fit against the outer surface of the valve body.

[0022] As a further description of the above technical solution:

[0023] An arc-shaped plate is fixedly connected to the end of the moving rod, and the outer surface of the arc-shaped plate is in contact with the outer surface of the valve body.

[0024] By adopting the above technical solution, the position of the valve body can be determined by the arc-shaped plate.

[0025] By employing the above technical solution, the valve core displacement detection device of the high-frequency response solenoid valve of this utility model has at least the following beneficial effects:

[0026] 1. Compared with existing technologies, the valve core displacement detection device of this high-frequency response solenoid valve uses a motor-driven lead screw to rotate, causing a moving plate to move linearly along a guide rod. During this process, the electrode plate at the end of the fixed column can accurately approach the valve core as the moving plate moves, making the electrode plate fit against the valve core. The valve core then acts as a conductive medium to connect the two electrode plates. By detecting whether the circuit inside the first wire inside the fixed column is connected, it is possible to accurately determine whether the electrode plate is in contact with the valve core, thus determining the position of the valve core. Simultaneously, the sleeve in the displacement detection mechanism shifts with the movement of the moving plate, changing the contact position between the inner surface of the sleeve and the resistance block, resulting in a change in resistance value. This change forms a measurable electrical signal loop through the second and third wires. Compared with existing technologies, this device not only improves the accuracy and efficiency of detection but also enhances the stability and reliability of the entire fluid control system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure from a first-view perspective of the present invention.

[0028] Figure 2 This is a schematic diagram of the overall structure from a second perspective proposed in this utility model;

[0029] Figure 3 This is a first-view sectional view of the internal structure proposed in this utility model;

[0030] Figure 4 This is a second-view sectional view of the internal structure proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the displacement detection mechanism proposed in this utility model;

[0032] Figure 6 The present utility model proposes Figure 5 Enlarged view of the structure at point A in the middle.

[0033] Legend:

[0034] 1. Valve core detection mechanism; 101. Base; 102. Motor; 103. Lead screw; 104. Moving plate; 105. Fixed column; 106. Electrode plate; 107. First wire; 108. Guide rod; 2. Solenoid valve; 201. Valve body; 202. Valve core; 3. Displacement detection mechanism; 301. Moving rod; 302. Resistance block; 303. Second wire; 304. Baffle; 305. Spring; 306. Sleeve; 307. Third wire; 308. Arc plate. Detailed Implementation

[0035] Reference Figure 1-6 The present invention provides a valve core displacement detection device for a high-frequency response solenoid valve, comprising a valve core detection mechanism 1, a solenoid valve 2 installed inside the valve core detection mechanism 1, and a displacement detection mechanism 3 installed on the valve core detection mechanism 1. The valve core detection mechanism 1 includes a base 101, a motor 102 fixedly connected to the outer surface of the base 101, a lead screw 103 fixedly connected to the output end of the motor 102, a movable plate 104 mounted on the outer surface of the lead screw 103, a guide rod 108 fixedly connected inside the base 101, and the movable plate 104 mounted on the guide rod 108 for movement assisted by the guide rod 108. A fixing post 105 is fixedly connected to the outer surface of the movable plate 104, and an electrode plate 106 is fixedly connected to the end of the fixing post 105. The solenoid valve 2 includes a valve body 201, which is placed inside the base 101. The valve core 202 is internally configured. The position of the fixing post 105 corresponds to the position of the valve core 202. A first wire 107 is installed inside the fixing post 105. The first wire 107 is electrically connected to the electrode plate 106. Current can pass through the first wire 107 and the electrode plate 106. By detecting whether the circuit inside the first wire 107 is connected, it can be determined whether the electrode plate 106 is in contact with the valve core 202. The motor 102 drives the lead screw 103 to rotate, which drives the moving plate 104 to move linearly along the guide rod 108, so that the electrode plate 106 at the end of the fixing post 105 can be in contact with the valve core 202 when the valve core 202 stops. The valve core 202 connects the two electrode plates 106, and the position state of the valve core 106 is converted into an electrical signal that can be detected by the first wire 107, thereby determining the position of the valve core 202.

[0036] The displacement detection mechanism 3 includes a moving rod 301, which is installed inside a moving plate 104. A resistor block 302 is fixedly connected to the outer surface of the moving rod 301, and a second wire 303 is fixedly connected to the back of the moving rod 301. This wire, in conjunction with a sleeve 306, converts the displacement state of the valve core 202 into an electrical signal for detection. A sleeve 306 is fixedly connected to the surface of the moving plate 104, with its inner surface in contact with the outer surface of the resistor block 302. A third wire 307 is fixedly connected to the outer surface of the sleeve 306. In use, the motor 102 controls the moving plate 104 to move, causing the electrode plate 106 to contact the valve core 202. At this time, the sleeve 306 follows the moving plate 104. 04. Moving together, the sleeve 306 will contact different areas of the resistor block 302 on the moving rod 301 during the movement, which will change the resistance value and form a measurable electrical signal circuit through the second wire 303 and the third wire 307. A baffle 304 is fixedly connected to the outer surface of the moving rod 301. A spring 305 is installed between the baffle 304 and the base 101. The spring 305 can push the moving rod 301 forward, so that the arc plate 308 is in contact with the outer surface of the valve body 201. An arc plate 308 is fixedly connected to the end of the moving rod 301. The outer surface of the arc plate 308 is in contact with the outer surface of the valve body 201. The position of the valve body 201 can be determined by the arc plate 308.

[0037] Working principle: When in use, the motor 102 is started, driving the lead screw 103 to rotate. The moving plate 104 moves linearly along the guide rod 108. As the moving plate 104 moves, the fixed post 105, which is fixedly connected to the outer surface of the moving plate 104, also moves, thereby driving the electrode plate 106 at the end of the fixed post 105 to move closer to the valve core 202. When the electrode plate 106 is in contact with the valve core 202, the valve core 202 acts as a conductive medium to connect the two electrode plates 106. At this time, by detecting whether the circuit inside the first wire 107 inside the fixed post 105 is connected, the electrode plate 106 can be accurately determined. Whether or not it is in contact with the valve core 202, thereby determining the position state of the valve core 202. At the same time, the sleeve 306 in the displacement detection mechanism 3 will move together with the moving plate 104. Since the inner surface of the sleeve 306 is in contact with the outer surface of the resistor block 302 on the moving rod 301, the sleeve 306 will contact different areas of the resistor block 302 during the movement, causing the resistance value to change. This changed resistance value will form a measurable electrical signal circuit through the second wire 303 and the third wire 307, thereby converting the displacement state of the valve core 202 into an electrical signal for detection, thereby realizing the valve core displacement detection of the solenoid valve.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve core displacement detection device for a high-frequency response solenoid valve, comprising a valve core detection mechanism (1), characterized in that: The valve core detection mechanism (1) is equipped with a solenoid valve (2), and a displacement detection mechanism (3) is installed on the valve core detection mechanism (1). The valve core detection mechanism (1) includes a base (101). A motor (102) is fixedly connected to the outer surface of the base (101). A lead screw (103) is fixedly connected to the output end of the motor (102). A moving plate (104) is installed on the outer surface of the lead screw (103). A fixed column (105) is fixedly connected to the outer surface of the moving plate (104). An electrode plate (106) is fixedly connected to the end of the fixed column (105). The solenoid valve (2) includes a valve body (201). The valve body (201) is placed inside the base (101). A valve core (202) is provided inside the valve body (201). The position of the fixed column (105) corresponds to the position of the valve core (202).

2. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 1, characterized in that: The first wire (107) is installed inside the fixed column (105), and the first wire (107) is electrically connected to the electrode plate (106).

3. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 1, characterized in that: A guide rod (108) is fixedly connected inside the base (101), and the movable plate (104) is mounted on the guide rod (108).

4. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 1, characterized in that: The displacement detection mechanism (3) includes a moving rod (301), which is installed inside the moving plate (104). A resistor block (302) is fixedly connected to the outer surface of the moving rod (301), and a second wire (303) is fixedly connected to the back of the moving rod (301).

5. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 4, characterized in that: A sleeve (306) is fixedly connected to the surface of the movable plate (104). The inner surface of the sleeve (306) is in contact with the outer surface of the resistor block (302). A third wire (307) is fixedly connected to the outer surface of the sleeve (306).

6. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 5, characterized in that: A baffle (304) is fixedly connected to the outer surface of the moving rod (301), and a spring (305) is installed between the baffle (304) and the base (101).

7. The valve core displacement detection device for a high-frequency response solenoid valve according to claim 6, characterized in that: An arc-shaped plate (308) is fixedly connected to the end of the moving rod (301), and the outer surface of the arc-shaped plate (308) is in contact with the outer surface of the valve body (201).

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