Valve port testing device

Abstract

The utility model relates to a valve port testing device, testing device includes test seat, pressure head, the pressure head is installed above test seat, an air inlet channel is arranged in test seat, an electromagnetic valve assembly is composed of valve seat, valve body, valve push rod, when testing, electromagnetic valve assembly is placed on test seat, with test seat as support, the air inlet channel is connected with valve seat lower end port, the pressure head is pressed on valve push rod, makes valve port close. It is reasonable in design, simple structure can realize valve port detection, measures valve port tightness, eliminates the product of big leakage amount, increases the air inlet pressure, sees how big air pressure will valve push rod open, monitors the sudden change value of air pressure, controls the valve port opening pressure of screening valve under specific pressure (specific pressure refers to the pressure of pressure head to valve push rod, and the size of this force value is confirmed through simulation analysis + actual measurement to confirm the electromagnetic force size generated by the upper electricity of electromagnetic valve).

Description

Technical Field

[0001] This utility model relates to solenoid valves, specifically to a valve port testing device. Background Technology

[0002] In the field of solenoid valve manufacturing and performance testing, key indicators such as valve port sealing and opening / closing performance directly determine the quality reliability and safety of solenoid valve products. Especially in applications such as hydraulic and pneumatic control systems and fluid transportation, substandard valve port performance may lead to serious problems such as leakage, unstable pressure, or even equipment failure. Utility Model Content

[0003] This utility model proposes a valve port testing device.

[0004] The technical solution of this utility model: A valve port testing device includes a test seat and a pressure head, the pressure head being mounted above the test seat; an air inlet channel is disposed inside the test seat; a solenoid valve assembly consists of a valve seat, a valve body, and a valve push rod; during testing, the solenoid valve assembly is placed on the test seat and supported by the test seat, the air inlet channel is connected to the lower port of the valve seat, and the pressure head presses against the valve push rod to close the valve port.

[0005] Further refining the above technical solution, the testing device also includes a transition block, which is installed above the test seat; the lower surface of the transition block is provided with an upper groove, and the upper surface of the test seat is provided with a lower groove; an air outlet channel is provided inside the transition block, and the air outlet channel is connected to the upper groove; during testing, the solenoid valve assembly falls into the lower groove, and the transition block presses on the test seat, so that the upper groove and the lower groove form a sealed cavity and seal the solenoid valve assembly therein.

[0006] Further refining the above technical solution, the pressure head is a push rod, the pressure head and the transition block share a common connecting column, the pressure head is inside and the transition block is outside; the connecting column is fixed on the sliding plate, and the sliding plate is installed on the column and driven by a cylinder.

[0007] To further refine the above technical solution, the pressure head is located inside the connecting column and supplemented by a spring.

[0008] Further refining the above technical solution, the test seat is the lower pressure head, and the test device also includes a pre-pressure seat. The test seat is mounted on the pre-pressure seat, which is mounted on a base plate and supplemented with a linear bearing and a return spring.

[0009] To further refine the above technical solution, the testing device also includes an air intake block, which is fixed on the base plate, and the pre-pressure seat is supported by the air intake block.

[0010] To further refine the above technical solution, the testing device also includes a polyurethane seal; during testing, the polyurethane sealing gasket is located at the lower end of the valve seat, forming a seal at the lower port of the valve seat.

[0011] To further refine the above technical solution, the air intake channel is also located within the pre-compression seat and the air intake block.

[0012] The advantages of this utility model are that it has a reasonable design and simple structure, and can realize valve port detection; measure the valve port sealing performance to eliminate products with large leakage; increase the inlet pressure, observe how much atmospheric pressure will push the valve push rod open, monitor the sudden change value of air pressure, and control the valve port opening pressure of the screening valve under a specific pressure (the specific pressure refers to the downward pressure of the pressure head on the valve push rod, and the magnitude of this force is confirmed by simulation analysis and actual measurement to confirm the magnitude of the electromagnetic force generated by the solenoid valve when it is powered on). Attached Figure Description

[0013] Figure 1 This is a 3D view of the valve port testing device.

[0014] Figure 2 This is a test diagram (partial cross-section) of the valve port testing device.

[0015] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0016] The figure shows the following components: 1. Lower pressure head; 2. Push rod; 3. Transition block; 4. Pre-pressure seat; 5. Air inlet block; 6. Polyurethane seal; 7. Connecting column; 8. Sliding plate; 9. Column; 10. Cylinder; 11. Spring; 12. Base plate; 13. Linear bearing; 14. Return spring; 15. Air inlet channel; 16. Air outlet channel; 17. Solenoid valve assembly 17 consists of valve seat 17-1, valve body 17-2, and valve push rod 17-3. Detailed Implementation

[0017] like Figure 1-3 As shown: A valve port testing device includes a lower pressure head 1, a push rod 2, a transition block 3, a pre-pressure seat 4, an air inlet block 5, and a polyurethane seal 6. The push rod 2 and the transition block 3 are located above the lower pressure head 1. The push rod 2 and the transition block 3 are connected by a column 7, with the push rod 2 inside and the transition block 3 outside. The connecting column 7 is fixed on a sliding plate 8, which is mounted on a column 9 and driven by a cylinder 10. The push rod 2 is mounted inside the connecting column 7 and is supported by a spring 11. The lower pressure head 1 is mounted on the pre-pressure seat 4, which is mounted on a base plate 12 and supported by a linear bearing 13 and a return spring 14. The air inlet block 5 is fixed on the base plate 12, and the pre-pressure seat 4 is supported by the air inlet block 5. The column 9 is fixed on the base plate 12. The lower surface of the transition block 3 is provided with an upper groove, and the upper surface of the lower pressure head 1 is provided with a lower groove; the lower pressure head 1, the pre-pressure seat 4, and the air inlet block 5 are provided with an air inlet channel 15, and the transition block 3 is provided with an air outlet channel 16, which is connected to the upper groove. The solenoid valve assembly 17 consists of a valve seat 17-1, a valve body 17-2, and a valve push rod 17-3; The solenoid valve assembly 17 is placed on the lower pressure head 1 and supported by the lower pressure head 1. The solenoid valve assembly 17 rests in the lower groove. The air intake passage 15 is connected to the lower port of the valve seat 17-1. The polyurethane sealing gasket 6 is at the lower end of the valve seat 17-1, forming a seal at the lower port of the valve seat 17-1. The push rod 2 (moving downward) presses on the valve push rod 17-4, closing the valve port (the downward pressure applied by the push rod 2 to the valve push rod 17-4 is controlled by the spring 11). At the same time, the transition block 3 (moving downward) presses on the lower pressure head 1. The upper and lower grooves are combined to form a sealed cavity and the solenoid valve assembly 17 is sealed in it; air enters through the air inlet channel 15, 1) test the valve port seal; the air inlet pressure acts on the valve push rod 17-3) increase the air inlet pressure, observe the atmospheric pressure to push the valve push rod 17-3 open, monitor the sudden change value of air pressure, and control the valve port opening pressure of the screening valve under a specific pressure (the specific pressure refers to the downward pressure of the pressure head on the valve push rod, and the magnitude of this force value is confirmed by simulation analysis + actual measurement to confirm the magnitude of the electromagnetic force generated by the solenoid valve when it is powered on).

[0018] The above embodiments are only for illustrating the technical concept and features of the utility model, and are intended to enable those skilled in the art to understand the content of the utility model and implement it accordingly. They should not be construed as limiting the scope of protection of the utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the utility model should be covered within the scope of protection of the utility model.

Claims

1. A valve port testing device, characterized in that, The testing device includes a test base and a pressure head, with the pressure head mounted above the test base; an air intake channel is disposed inside the test base; and a solenoid valve assembly consists of a valve seat, a valve body, and a valve push rod. During testing, the solenoid valve assembly is placed on the test seat and supported by the test seat. The air intake channel is connected to the lower port of the valve seat, and the pressure head presses on the valve push rod to close the valve port.

2. The valve port testing device according to claim 1, characterized in that, The testing device further includes a transition block, which is installed above the test base; the lower surface of the transition block is provided with an upper groove, and the upper surface of the test base is provided with a lower groove; an air outlet channel is provided inside the transition block, and the air outlet channel is connected to the upper groove. During testing, the solenoid valve assembly falls into the lower groove, and the transition block presses on the test seat, so that the upper groove and the lower groove form a sealed cavity and seal the solenoid valve assembly therein.

3. The valve port testing device according to claim 1, characterized in that, The pressure head is a push rod, and the pressure head and the transition block are connected by a common column, with the pressure head inside and the transition block outside; the connecting column is fixed on a sliding plate, and the sliding plate is installed on a column and driven by a cylinder.

4. The valve port testing device according to claim 3, characterized in that, The pressure head is located inside the connecting column and is supplemented by a spring.

5. The valve port testing device according to claim 1, characterized in that, The test seat is the lower pressure head. The test device also includes a pre-pressure seat. The test seat is mounted on the pre-pressure seat, which is mounted on a base plate and supplemented with a linear bearing and a return spring.

6. The valve port testing device according to claim 5, characterized in that, The testing device also includes an air intake block, which is fixed on the base plate, and the pre-pressure seat is supported by the air intake block.

7. The valve port testing device according to claim 1, characterized in that, The testing device also includes a polyurethane seal; During testing, the polyurethane gasket is located at the lower end of the valve seat, forming a seal at the lower port of the valve seat.

8. A valve port testing device according to claim 6, characterized in that, The air intake channel is also located inside the pre-compression seat and the air intake block.

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