Simple test board for electromagnetic valve

Abstract

The utility model provides a simple testboard for a solenoid valve, which belongs to the technical field of solenoid valve testing and comprises a tested workpiece, an air source inlet, two groups of air path units, two groups of gas path units and two groups of gas path units, one group is used for realizing the side-in bottom-out circulation test of the tested workpiece, the other group is used for realizing the bottom-in side-out circulation test of the tested workpiece, and the two groups can be used for testing the bidirectional circulation of the tested workpiece. The maximum opening pressure, the minimum closing pressure, the sealing performance, the flow and the like of the tested workpiece can be tested through the testing gas circuit.

Description

Technical Field

[0001] This utility model relates to the field of simplified testing technology for solenoid valves, specifically to a simplified testing bench for solenoid valves. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation systems used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems, 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. There are many types of solenoid valves, each playing a different role in the control system.

[0003] Currently, companies that manufacture pneumatic solenoid valves have inconsistent technical requirements for solenoid valve test benches, and their equipment capabilities vary. In the early stages of design, due to the lack of product standardization and the long manufacturing cycle of comprehensive testing equipment, there is an urgent need to design a simple test air circuit that can meet the testing requirements of solenoid valves. Therefore, we have proposed a simple solenoid valve test bench. Utility Model Content

[0004] In view of this, the present invention provides a simple test bench for solenoid valves, which can shorten the equipment manufacturing period. Through the test air circuit, the maximum opening pressure, minimum closing pressure, sealing performance, flow rate, etc. of the workpiece under test can be tested.

[0005] To solve the above-mentioned technical problems, this utility model provides a simple test bench for solenoid valves, including a workpiece to be tested and an air source inlet, wherein the workpiece to be tested is set on a test fixture.

[0006] The air source inlet, which is connected to an external air supply unit, provides air pressure for the workpiece under test during testing;

[0007] Two sets of air path units are used. One set is used to realize the side-in and bottom-out flow test of the workpiece under test, and the other set is used to realize the bottom-in and side-out flow test of the workpiece under test. Both sets can be used to test the bidirectional flow of the workpiece under test.

[0008] The side-in, bottom-out air passage unit includes a branch pipe one for air pressure to flow into the side port of the workpiece being tested and a branch pipe two for air pressure to flow out of the bottom port of the workpiece being tested.

[0009] The bottom-in, side-out air circuit unit includes a branch pipe three for air pressure to flow into the bottom port of the workpiece under test and a branch pipe four for air pressure to flow out of the side port of the workpiece under test. A ball valve three for controlling its opening and closing is provided on the branch pipe three, and a ball valve four for controlling its opening and closing is provided on the branch pipe four.

[0010] Branch pipe one is equipped with a branch pipe 1 for controlling its opening and closing, and branch pipe two is equipped with a ball valve 2 for controlling its opening and closing.

[0011] The external air supply unit includes an air tank 1 and an air tank 2. The air pressure of the air tank 1 is greater than that of the air tank 2. The outlet of the air tank 2 is equipped with a pressure gauge 3 for displaying the maximum opening pressure and minimum closing pressure of the workpiece being tested.

[0012] The air inlet of the first air tank is equipped with a pipe, and the pipe is equipped with a valve to control the air pressure flowing in from the air source inlet. The first air tank is equipped with a pressure gauge, and the valve is used to control the air pressure entering the first air tank.

[0013] The outlet of gas tank 1 is connected to the inlet of gas tank 2 via a pipe 2. A valve 2 is installed on pipe 2, and a pressure gauge 2 is installed on gas tank 2. Valve 2 is used to control the gas pressure in gas tank 1 to be discharged into gas tank 2. Valve 2 is a pressure regulating valve that can adjust the gas pressure discharged from gas tank 1 to the pressure required for testing.

[0014] The outlet of the gas storage tank is equipped with a pipe three, a valve three, and a pressure gauge three for displaying the maximum opening pressure and minimum closing pressure of the workpiece being tested. The pipe three is connected to the branch pipe one and the branch pipe three. After the pressure in the gas storage tank two reaches the test pressure, the valve three is opened to control the gas pressure in the gas storage tank two to flow out through the pipe three.

[0015] When the workpiece is being tested, the air pressure flowing out from branch pipe two and branch pipe four will flow out through the flow pipe, which is equipped with a flow meter to display the flow rate of the workpiece.

[0016] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects of a simplified solenoid valve test bench:

[0017] 1. When this utility model is used, it can shorten the equipment manufacturing period. Through the test air circuit, the maximum opening pressure, minimum closing pressure, sealing performance, flow rate, etc. of the workpiece under test can be tested.

[0018] 2. When using this utility model, by setting two sets of independent and symmetrical air circuit units (first unit: ball valve one, ball valve two; second unit: ball valve three, ball valve four), the airflow in / out direction (side in, bottom out or bottom in, side out) can be flexibly switched to meet the testing requirements for the bidirectional flow performance of the solenoid valve, and the test coverage is more comprehensive.

[0019] 3. When this utility model is used, a ball valve is used as the main control element, and the modularization and simplification of the gas circuit structure are achieved by using a shared gas supply unit and a shared flow pipe with a flow meter. This design significantly reduces the complexity and cost of equipment manufacturing, shortens the manufacturing period, and meets the original design intention of "simple test bench". Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the air path of this utility model;

[0021] Figure 2 This is a schematic diagram of the test bench structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the side-inlet and bottom-outlet air passage structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the bottom-inlet, side-outlet air passage structure of this utility model.

[0024] Explanation of reference numerals in the attached diagram: 100, workpiece under test; 200, air source inlet; 301, air tank one; 302, pressure gauge one; 401, air tank two; 402, pressure gauge two; 501, pipe one; 502, valve one; 503, pipe two; 504, valve two; 505, pipe three; 506, valve three; 600, pressure gauge three; 701, branch pipe one; 702, ball valve one; 703, branch pipe two; 704, ball valve two; 801, branch pipe three; 802, ball valve three; 803, branch pipe four; 804, ball valve four; 900, flow meter. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0026] According to embodiments of the present invention, such as Figure 1 As shown: This embodiment provides a simple solenoid valve test bench, including a workpiece 100 to be tested and an air source inlet 200. The workpiece 100 to be tested is set on the test fixture. The most commonly used workpieces to be tested are normally open valves, normally closed valves, and proportional valves. The air source inlet 200 is connected to an external air supply unit to provide air pressure for the workpiece 100 to be tested. There are two sets of air circuit units. One set is used to realize the side-in and bottom-out flow test of the workpiece 100 to be tested, and the other set is used to realize the bottom-in and side-out flow test of the workpiece 100 to be tested. The two sets can be used to test the bidirectional flow of the workpiece 100 to be tested.

[0027] Furthermore, such as Figure 3 As shown, the side-inlet and bottom-outlet air passage unit includes a branch pipe 701 for air pressure to flow into the side port of the workpiece 100 under test and a branch pipe 703 for air pressure to flow out of the bottom port of the workpiece 100 under test.

[0028] Furthermore, such as Figure 4 As shown, the bottom-in, side-out air passage unit includes a third branch pipe 801 for air pressure to flow into the bottom port of the workpiece 100 under test and a fourth branch pipe 803 for air pressure to flow out of the side port of the workpiece 100 under test. A ball valve 802 for controlling its opening and closing is provided on the third branch pipe 801, and a ball valve 804 for controlling its opening and closing is provided on the fourth branch pipe 803.

[0029] Furthermore, branch pipe 701 is equipped with a branch pipe 701 for controlling its opening and closing, and branch pipe 703 is equipped with a ball valve 704 for controlling its opening and closing.

[0030] It is worth mentioning that when performing a side-inlet, bottom-outlet air circuit test, ball valve 1 (702) and ball valve 2 (704) are open, while ball valve 3 (802) and ball valve 4 (804) are closed. When performing a bottom-inlet, side-outlet air circuit test, ball valve 3 (802) and ball valve 4 (804) are open, while ball valve 1 (702) and ball valve 2 (704) are closed. Ball valve 1 (702), ball valve 2 (704), ball valve 3 (802), and ball valve 4 (804) can also be used normally when switched to shut-off valves.

[0031] Furthermore, such as Figure 1 , 2 As shown, the external air supply unit includes an air storage tank 301 and an air storage tank 401. The air pressure of the air storage tank 301 is greater than that of the air storage tank 401. The outlet of the air storage tank 401 is equipped with a pressure gauge 600 for displaying the maximum opening pressure and minimum closing pressure of the workpiece 100 being tested.

[0032] Furthermore, the air inlet of the air storage tank 301 is provided with a pipe 501, and a valve 502 is provided on the pipe 501 to control the air pressure flowing into the air source inlet 200. A pressure gauge is provided on the air storage tank 301, which can show the pressure inside the air storage tank 301. The valve 502 is used to control the air pressure entering the air storage tank 301.

[0033] Furthermore, the outlet of the first gas tank 301 is connected to the inlet of the second gas tank 401 via a pipe 503. A valve 504 is installed on the pipe 503. A pressure gauge is installed on the second gas tank 401. The pressure gauge can show the pressure inside the second gas tank 401. The valve 504 is used to control the air pressure in the first gas tank 301 to be discharged into the second gas tank 401. The valve 504 is a pressure regulating valve that can adjust the air pressure discharged from the first gas tank 301 to the pressure required for testing.

[0034] Furthermore, the outlet end of the gas storage tank 2 401 is equipped with a pipe 3 505, a valve 3 506 is installed on the pipe 3 505, and a pressure gauge 3 600 is also installed to display the maximum opening pressure and minimum closing pressure of the workpiece 100 under test. The pipe 3 505 is connected to the branch pipe 1 701 and the branch pipe 3 801. After the pressure in the gas storage tank 2 401 reaches the test pressure, the valve 3 506 is opened to control the air pressure in the gas storage tank 2 401 to flow out through the pipe 3 505.

[0035] Furthermore, during the testing of the workpiece 100, the air pressure flowing out from branch pipe 2 703 and branch pipe 4 803 will flow out through the flow pipe, and a flow meter 900 is installed on the flow pipe to display the flow rate of the workpiece 100.

[0036] It is worth mentioning that branch pipe 1 701 and branch pipe 4 803 are connected to the side port of the workpiece 100 under test through a tee pipe, and branch pipe 2 703 and branch pipe 3 801 are connected to the bottom port of the workpiece 100 under test through a tee pipe. This allows the workpiece 100 under test to be tested without the need to replace the pipeline. The test effect of side inlet and bottom outlet and bottom inlet and side outlet can be achieved simply by opening and closing the ball valve.

[0037] The method of using this utility model is as follows: When performing a pneumatic test on the workpiece 100, the operator can open valve 502 to allow air pressure to enter the air storage tank 301 through pipe 501 at the air source inlet 200. When the pressure in the air storage tank 301 is greater than the required test pressure, the operator can open valve 504 to allow the air pressure in the air storage tank 301 to flow into the air storage tank 401 through pipe 503. When the pressure in the air storage tank 401 reaches the test pressure, the operator can open valve 506 to allow the air pressure to be discharged through pipe 505. At this time, ball valves 702 and 704 can be opened, and the ball valve can be closed. Ball valves 802 and 804 allow air pressure to flow into the workpiece 100 under test through branch pipe 701 and out through branch pipe 703, achieving a side-in, bottom-out air path test for the workpiece 100. Subsequently, the operator can close ball valves 702 and 704 and open ball valves 802 and 804, allowing air pressure to flow into the workpiece 100 under test through branch pipe 801 and out through branch pipe 803, achieving a bottom-in, side-out air path test for the workpiece 100. This invention can shorten the equipment manufacturing period. Through the test air path, the maximum opening pressure, minimum closing pressure, sealing performance, flow rate, etc., of the workpiece 100 under test can be tested.

[0038] It should be clarified here that the air tank, pressure gauge, and flow meter 900 are all common structures used for testing solenoid valves in the prior art. Since they are not the main technical features of this utility model, the model will not be limited here, nor will their structure be described in detail. Only the usage method and installation position of the solenoid valve air circuit test will be described in detail.

[0039] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A simple test bench for a solenoid valve, comprising a workpiece to be tested (100) and an air source inlet (200), wherein the workpiece to be tested (100) is mounted on a test fixture, characterized in that: The air source inlet (200) is connected to the external air supply unit to provide air pressure for the workpiece (100) under test during testing; Two sets of air circuit units, one set is used to realize the side-in and bottom-out flow test of the workpiece under test (100), and the other set is used to realize the bottom-in and side-out flow test of the workpiece under test (100). The two sets of methods can be used to test the bidirectional flow of the workpiece under test (100).

2. A simple test bench for electromagnetic valves as claimed in claim 1, characterized in that: The side-in, bottom-out air passage unit includes a branch pipe one (701) for air pressure to flow into the side port of the workpiece (100) under test and a branch pipe two (703) for air pressure to flow out of the bottom port of the workpiece (100) under test.

3. A simple test bench for electromagnetic valves as claimed in claim 1, characterized in that: The bottom-in, side-out air passage unit includes a third branch pipe (801) for air pressure to flow into the bottom port of the workpiece (100) under test and a fourth branch pipe (803) for air pressure to flow out of the side port of the workpiece (100) under test. A ball valve third (802) for controlling its opening and closing is provided on the third branch pipe (801), and a ball valve fourth (804) for controlling its opening and closing is provided on the fourth branch pipe (803).

4. A simple test bench for electromagnetic valves as claimed in claim 2, characterized in that: The branch pipe 1 (701) is provided with a branch pipe 1 (701) for controlling its opening and closing, and the branch pipe 2 (703) is provided with a ball valve 2 (704) for controlling its opening and closing.

5. The simple test bench for electromagnetic valve according to claim 1, characterized in that: The external air supply unit includes an air storage tank 1 (301) and an air storage tank 2 (401). The air pressure of the air storage tank 1 (301) is greater than that of the air storage tank 2 (401). The air outlet of the air storage tank 2 (401) is equipped with a pressure gauge 3 (600) for displaying the maximum opening pressure and minimum closing pressure of the workpiece (100) being tested.

6. A simple test bench for electromagnetic valves as claimed in claim 5, characterized in that: The gas storage tank (301) is equipped with a pipe (501) at its air inlet end. A valve (502) is installed on the pipe (501) to control the air pressure flowing into the gas source inlet (200). A pressure gauge is installed on the gas storage tank (301).

7. A simple test bench for electromagnetic valves as claimed in claim 5, characterized in that: The outlet end of the first gas storage tank (301) is provided with a second pipe (503) that is connected to the inlet end of the second gas storage tank (401). A second valve (504) is provided on the second pipe (503), and a second pressure gauge is provided on the second gas storage tank (401).

8. A simple test bench for electromagnetic valves as claimed in claim 5, characterized in that: The gas storage tank 2 (401) is provided with a pipe 3 (505) at the gas outlet end. A valve 3 (506) is provided on the pipe 3 (505). A pressure gauge 3 (600) is also provided to display the maximum opening pressure and minimum closing pressure of the workpiece (100) being tested. The pipe 3 (505) is connected to the branch pipe 1 (701) and the branch pipe 3 (801).

9. A simple test bench for electromagnetic valves as claimed in claim 2 or 3, characterized in that: When the workpiece under test (100) is tested, the air pressure flowing out from branch pipe two (703) and branch pipe four (803) will flow out through the flow pipe, and a flow meter (900) is installed on the flow pipe to display the flow rate of the workpiece under test (100).

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