Solenoid valve test tool

Abstract

The utility model relates to the technical field of electromagnetic valve testing, in particular to an electromagnetic valve testing tool, which comprises a testing table, a first detection port, a second detection port and a third detection port are arranged on a vertical surface of a step surface, the first detection port corresponds to an air inlet of an electromagnetic valve to be detected, and the third detection port corresponds to an air outlet of the electromagnetic valve to be detected. The second detection port corresponds to a working port of the to-be-detected solenoid valve, and the third detection port corresponds to an exhaust port of the to-be-detected solenoid valve; the pushing assembly is arranged towards the step surface of the test board, and the pushing assembly is configured to push the to-be-detected solenoid valve to be in sealed connection with the first detection port, the second detection port and the third detection port when the to-be-detected solenoid valve is placed on the step surface; wherein the other end of the first detection port is communicated with an external air source, the second detection port is connected with a pressure sensor, and the pressure sensor is communicated with detection equipment. Different testing devices are prevented from being adopted according to different testing items, the testing process is simplified, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve testing, in particular to a electromagnetic valve testing tool. Background Art

[0002] A solenoid valve is an automated fluid control component that utilizes electromagnetic control to open and close fluids. Its core structure consists of a solenoid coil, an iron core, and a valve body. When energized, the solenoid coil generates a magnetic field, driving the iron core or armature to move, thereby changing the valve's open / close state. When de-energized, the electromagnetic field dissipates, and the iron core, activated by springs and other components, returns to its original position, closing the valve or returning it to its initial state. Solenoid valves play a key role in industrial control systems and are commonly used for flow control and on / off control of gases, liquids, and oils. They are widely used in automation equipment, petrochemicals, water treatment systems, air conditioning and refrigeration, food processing machinery, and medical equipment.

[0003] Performing preliminary testing on solenoid valves during their production testing phase to troubleshoot problems is a key step in ensuring their performance, reliability, and safety. Existing tests often require the use of different test devices depending on the test items, resulting in a cumbersome and inefficient testing process. Utility Model Content

[0004] In view of at least one of the above technical problems, the present invention provides a solenoid valve testing tool, which adopts structural improvement to improve the efficiency of solenoid valve testing.

[0005] According to a first aspect of the present invention, a solenoid valve testing tool is provided, comprising:

[0006] A test bench having a stepped surface, wherein a vertical surface of the stepped surface has a first detection port, a second detection port, and a third detection port, wherein the first detection port corresponds to an air inlet of the solenoid valve to be tested, the second detection port corresponds to a working port of the solenoid valve to be tested, and the third detection port corresponds to an exhaust port of the solenoid valve to be tested;

[0007] a pushing assembly disposed toward the step surface of the test bench, wherein the pushing assembly is configured to push the solenoid valve to be tested to be sealedly connected with the first test port, the second test port, and the third test port when the solenoid valve to be tested is placed on the step surface;

[0008] The other end of the first detection port is connected to an external gas source, and the second detection port is connected to a pressure sensor, which is connected to a detection device.

[0009] In some embodiments of the present invention, the pushing assembly includes a cylinder, and a push plate is connected to one end of the piston of the cylinder facing the solenoid valve to be detected.

[0010] In some embodiments of the present invention, a push block is provided on a surface of the push plate facing the solenoid valve to be detected in the height direction.

[0011] In some embodiments of the present invention, a muffler is provided at one end of the test bench away from the step surface, and the third detection port is connected to the muffler.

[0012] In some embodiments of the present invention, a positioning pin is provided on the vertical surface of the step surface, and the positioning pin corresponds to the valve body mounting hole of the solenoid valve to be tested.

[0013] In some embodiments of the present invention, a positioning hole is provided on a side of the test bench facing the solenoid valve to be tested, and the positioning hole is connected to a connecting pin in the solenoid valve to be tested.

[0014] In some embodiments of the present invention, the solenoid valve testing fixture includes a base plate, the test bench and the pushing assembly are arranged on the base plate, and the test bench and the pushing assembly are arranged in the same straight line direction of the base plate.

[0015] In some embodiments of the present invention, vertical side panels are provided at the edge of the bottom plate, wherein gratings are provided on two opposite side panels in the inward direction.

[0016] In some embodiments of the present invention, the bottom plate is provided with a groove for placing the pushing component.

[0017] In some embodiments of the present invention, the solenoid valve testing tool includes a conventional electric control box and an emergency stop electric control box, and the conventional electric control box and the emergency stop electric control box are arranged on the outside of the side plate.

[0018] The beneficial effects of the utility model are as follows: the utility model pushes the solenoid valve to be tested to be sealed and connected with the first test port, the second test port and the third test port through the pushing component, and then performs high and low pressure leakage tests, action response time tests, and high pressure function tests, thereby achieving the first placement of the solenoid valve to be tested at the tooling positioning position so that a comprehensive test can be performed; compared with the existing technology, the utility model avoids the use of different test devices according to different test items, simplifies the test process, and improves test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of a solenoid valve testing tool in an embodiment of the present utility model;

[0021] Figure 2 In the embodiment of the present utility model Figure 1 A partial enlarged view of point A in the middle;

[0022] Figure 3 This is a structural diagram of the solenoid valve to be tested in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the test bench and the pushing assembly in an embodiment of the present utility model;

[0024] Figure 5 This is a side view of the solenoid valve testing tool in the embodiment of the present utility model;

[0025] Figure 6 This is a structural diagram of a solenoid valve testing fixture having a bottom plate and side plates in an embodiment of the present utility model;

[0026] Figure 7 This is a structural schematic diagram of a solenoid valve testing tool with a groove on the bottom plate in an embodiment of the utility model.

[0027] Explanation of the accompanying drawings: 1. Test bench; 11. First detection port; 12. Second detection port; 13. Third detection port; 14. Step surface; 14a. Positioning pin; 14b. Positioning hole; 15. Pressure sensor; 16. Muffler; 2. Pushing assembly; 21. Double-piston cylinder; 21a. Cylinder piston; 22. Push plate; 23. Push block; 3. Bottom plate; 4. Side plate; 41. Grating; 5. Conventional electric control box; 6. Emergency stop electric control box; 01. Solenoid valve to be tested; 02. Air inlet; 03. Working port; 04. Exhaust port; 05. Valve body mounting hole; 06. Connecting pin. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figures 1 to 6 The solenoid valve test fixture shown includes: a test bench 1 and a push assembly 2;

[0032] like Figure 1-2 As shown in the figure, the test bench 1 has a step surface 14 on the test bench 1, and a first detection port 11, a second detection port 12 and a third detection port 13 are provided on the vertical surface of the step surface 14. The first detection port 11 corresponds to the air inlet 02 of the electromagnetic valve 01 to be tested, the second detection port 12 corresponds to the working port 03 of the electromagnetic valve 01 to be tested, and the third detection port 13 corresponds to the exhaust port 04 of the electromagnetic valve 01 to be tested; Figure 3 As shown in , the solenoid valve 01 to be tested has an air inlet 02, two working ports 03 and two exhaust ports 04. The air inlet 02 serves as the main input end of the solenoid valve 01 to be tested, and is used to receive compressed air or other gases from the outside. The solenoid valve 01 to be tested controls the flow direction and flow of the gas through the working port 03 to achieve specific functions, such as driving a cylinder, controlling a valve, etc. When the solenoid valve 01 to be tested is in an inactive state, or when the gas needs to be released from the system, the exhaust port 04 is used to discharge the gas. When testing such a solenoid valve 01 to be tested, it is necessary to test the sealing of the air inlet 02, the working port 03 and the exhaust port 04 when the solenoid valve 01 to be tested is closed, and the time required for the solenoid valve 01 to be tested from receiving a signal to being fully opened or closed is tested, so as to evaluate the reliability and service life of the solenoid valve;

[0033] The pushing component 2 is arranged toward the step surface 14 of the test bench 1. The pushing component 2 is configured to push the solenoid valve 01 to be tested to be sealed and connected with the first test port 11, the second test port 12 and the third test port 13 when the solenoid valve 01 to be tested is placed on the step surface 14. It should be pointed out here that the structural form of the pushing component 2 can be a cylinder, a hydraulic cylinder, and other structural forms; it should also be pointed out here that the way in which the pushing component 2 ends the stroke can be to move the set stroke, or when the pushing component 2 pushes the solenoid valve 01 to be tested so that the pushing component 2 receives the set resistance, the stroke ends. The specific way of ending the stroke is set by technical personnel in this field as needed.

[0034] The other end of the first test port 11 is connected to an external air source, and the second test port 12 is connected to a pressure sensor 15, which is in communication with the test equipment. The external air source can be an air pump, air pipe, or compressed air supply system. The gas type can be compressed air, nitrogen, or other gases suitable for testing. By adjusting the pressure and flow of the external air source, the operating conditions of the solenoid valve 01 to be tested can be simulated. The pressure sensor 15 connected to the second test port 12 is used to monitor the pressure changes of the solenoid valve 01 to be tested while it is in operation.

[0035] The specific test process is as follows: after the solenoid valve 01 to be tested is placed on the step surface 14, the push component 2 pushes the solenoid valve 01 to be tested so that the solenoid valve 01 to be tested is in close contact with the step surface 14. Then, the high and low pressure leakage test, the action phase response time test, and the high pressure function test are started:

[0036] During the high and low pressure leakage tests, the high-precision pressure sensor 15 determines the pressure values ​​from the air inlet 02 to the two working ports 03 respectively; then the next test is automatically carried out. In the action response time test, the power-on response time from the moment of power-on to the pressure of the working port 03 rising to 10% of the air inlet 02 pressure is measured, and the power-off response time from the moment of power-off to the pressure of the working port 03 of the solenoid valve 01 to be tested falling to 90% of the original pressure is measured. After the test is completed, the next test is automatically started; in the high-pressure function test, the pressure sensor 15 obtains the pressure value, detects the pressure change of the working port 03 when power is on and off, and determines whether the valve stem of the solenoid valve 01 to be tested is working normally; after the test is completed, the push component 2 is retracted to the initial position, and then the next solenoid valve 01 to be tested is replaced manually or by machine.

[0037] In some embodiments of the present invention, Figure 1 、 4 As shown in , the pushing assembly 2 includes a cylinder, and a push plate 22 is connected to one end of the cylinder piston facing the solenoid valve 01 to be tested. In some embodiments, the cylinder adopts a double-piston cylinder 21, and the pushing assembly 2 includes a double-piston cylinder 21, and the double-piston cylinder 21 includes two cylinder pistons 21a, and the two cylinder pistons 21a are connected to one end of the solenoid valve 01 to be tested. The double-piston cylinder 21 can provide a larger output force and can be used for large-diameter solenoid valves, making the solenoid valve test tool more applicable and having a wider range of uses; the two cylinder pistons 21a move synchronously inside the double-piston cylinder 21, and the push plate 22 is connected to the ends of the two cylinder pistons 21a. When the two cylinder pistons 21a move, the push plate 22 moves accordingly, thereby pushing the solenoid valve 01 to be tested, and can provide greater thrust and more stable motion control.

[0038] In some embodiments of the present invention, Figure 4-5As shown in the figure, a push block 23 is provided on one side of the push plate 22 facing the electromagnetic valve 01 to be tested in the height direction. It should be noted that the cross section of the push block 23 can be square, C-shaped, or L-shaped to adapt to the shape of the electromagnetic valve 01 to be tested and provide a more stable push; it should also be noted that the connection between the push block 23 and the push plate 22 can be a movable connection or a fixed connection. The movable connection can be a pin connection, a mortise and tenon connection, or a splicing connection. Through such a setting, electromagnetic valves 01 to be tested of different shapes can be replaced, making the application range of the electromagnetic valve test tool wider and more applicable. The fixed connection can be welding, bonding, or screw connection, providing a more stable connection; it should also be noted that the movable connection can be combined with the fixed connection. The movable connection makes the push block 23 replaceable, and then a connection method such as an easily removable screw is adopted. Through such a setting, while ensuring the stability of the connection, the push block 23 can be replaced, which expands the application range of the electromagnetic valve test tool and reduces the maintenance cost.

[0039] In some embodiments of the present invention, Figure 4-5 As shown in FIG, a muffler 16 is provided at the end of the test bench 1 away from the step surface 14, and the third detection port 13 is connected to the muffler 16. Connecting the third detection port 13 to the muffler 16 allows the noise generated during the test to be processed through the muffler 16, thereby reducing noise emissions and helping to protect test personnel from noise interference or injury.

[0040] In some embodiments of the present invention, Figure 1-2 As shown in Figures 5 and 6, a positioning pin 14a is provided on the vertical surface of the stepped surface 14, and the valve body mounting hole 05 of the solenoid valve 01 to be tested corresponds to the positioning pin 14a. The height and shape of the positioning pin 14a correspond to each other, ensuring that the test solenoid valve is sealed with the first test port 11, the second test port 12, and the third test port 13, providing precise positioning and fixing functions, and ensuring the stability and accuracy of the solenoid valve during testing.

[0041] In order to further ensure the connection between the electromagnetic valve to be tested 01 and the step surface 14, in some embodiments of the present invention, as Figure 1-3As shown in FIG, the test bench 1 is provided with a positioning hole 14b on the side facing the solenoid valve 01 to be tested. Positioning hole 14b is connected to connecting pin 06 in the solenoid valve 01 to be tested. It should be noted that positioning hole 14b in the test bench 1 can be a through hole or a structure with a length matching that of connecting pin 06. This configuration further ensures the stability and accuracy of the solenoid valve during testing. Furthermore, the matching relationship between positioning hole 14b and connecting pin 06 simplifies the installation and removal process of the solenoid valve 01 to be tested, improving testing efficiency.

[0042] In some embodiments of the present invention, Figure 5-7 As shown in , the solenoid valve test fixture includes a base plate 3, and the test bench 1 and the pushing component 2 are arranged on the base plate 3, and the test bench 1 and the pushing component 2 are arranged in the same straight line direction of the base plate 3. The base plate 3 is the supporting structure of the entire solenoid valve test fixture, carrying the test bench 1, the pushing component 2, etc., further ensuring the positional relationship between the test bench 1 and the pushing component 2, ensuring that the test bench 1 and the pushing component 2 will not move accidentally during the test process, and ensuring the accuracy and reliability of the test. It should be pointed out here that the connection between the pushing component 2, the test bench 1, etc. and the base plate 3 can be a movable connection or a fixed connection. The movable connection method includes pin connection and splicing connection, and the fixed connection method includes bonding and welding. The specific connection method is set by technical personnel in this field as required.

[0043] In some embodiments of the present invention, Figure 6-7 As shown in FIG, vertical side panels 4 are provided at the edge of the base plate 3, wherein light barriers 41 are provided inwardly on two opposing side panels 4. The light barriers 41 are arranged on the two opposing side panels 4 and face inward. This layout ensures that the light barriers 41 can cover the key areas of the test fixture, thereby achieving real-time monitoring and protection of the test process. If the light barriers 41 detect an object entering its monitoring range, it can immediately send a signal to warn the operator or trigger a safety mechanism, thereby preventing potential dangers or accidents.

[0044] In some embodiments of the present invention, Figure 7 As shown in the figure, the base plate 3 is provided with a groove for placing the push assembly 2. It should be noted that the groove can be provided at the edge of the base plate 3 or at the center of the base plate 3, and its shape and size match those of the push assembly 2. The base plate 3 with the groove provides a precise and stable installation position to ensure that the push assembly 2 can be correctly installed on the base plate 3 and form a good fit with other components, such as the test bench 1. It should also be noted that further fixing means, such as bolts, nuts, etc., can be used to ensure that the push assembly 2 is firmly installed on the base plate 3.

[0045] In some embodiments of the present invention, Figure 6-7 As shown in , the solenoid valve test tool includes a conventional electric control box 5 and an emergency stop electric control box 6, and the conventional electric control box 5 and the emergency stop electric control box 6 are arranged on the outside of the side panel 4. The conventional electric control box 5 controls the action of the solenoid valve test tool, and the emergency stop electric control box 6 is an emergency stop device used to immediately cut off the power supply or stop the operation of the test tool when an abnormal situation or emergency occurs during the test process. The conventional electric control box 5 and the emergency stop electric control box 6 are arranged on the outside of the side panel 4. This arrangement has multiple advantages: it allows operators to easily access and control the conventional electric control box 5 and the emergency stop electric control box 6 without entering the interior of the test tool or moving other components; this layout helps to reduce interference between the conventional electric control box 5 and the emergency stop electric control box 6 and other components inside the test tool, thereby improving the accuracy and reliability of the test; arranging the electric control box on the outside of the side panel 4 also facilitates maintenance and repair work, reducing maintenance costs and time.

[0046] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A solenoid valve testing tool, characterized in that: include: A test bench having a stepped surface, wherein a vertical surface of the stepped surface has a first detection port, a second detection port, and a third detection port, wherein the first detection port corresponds to an air inlet of the solenoid valve to be tested, the second detection port corresponds to a working port of the solenoid valve to be tested, and the third detection port corresponds to an exhaust port of the solenoid valve to be tested; a pushing assembly disposed toward the step surface of the test bench, wherein the pushing assembly is configured to push the solenoid valve to be tested to be sealedly connected with the first test port, the second test port, and the third test port when the solenoid valve to be tested is placed on the step surface; The other end of the first detection port is connected to an external gas source, and the second detection port is connected to a pressure sensor, which is connected to a detection device.

2. The solenoid valve testing tool according to claim 1, characterized in that: The pushing assembly includes a cylinder, and a push plate is connected to one end of the piston of the cylinder facing the electromagnetic valve to be detected.

3. The solenoid valve testing tool according to claim 2, characterized in that: The push plate is provided with a push block on a surface thereof facing the electromagnetic valve to be detected in the height direction.

4. The solenoid valve testing tool according to claim 1, characterized in that: The test bench is provided with a muffler at one end away from the step surface, and the third detection port is connected to the muffler.

5. The solenoid valve testing tool according to claim 1, characterized in that: A positioning pin is provided on the vertical surface of the step surface, and the positioning pin corresponds to the valve body mounting hole of the solenoid valve to be tested.

6. The solenoid valve testing tool according to claim 5, characterized in that: A positioning hole is provided on a side of the test bench facing the electromagnetic valve to be tested, and the positioning hole is connected to a connecting pin in the electromagnetic valve to be tested.

7. The solenoid valve testing tool according to claim 1, characterized in that: The solenoid valve testing fixture includes a base plate, the test bench and the pushing assembly are arranged on the base plate, and the test bench and the pushing assembly are arranged in the same straight line direction of the base plate.

8. The solenoid valve testing tool according to claim 7, characterized in that: The edge of the bottom plate is provided with vertical side plates, wherein two opposite side plates are provided with gratings in the inward direction.

9. The solenoid valve testing tool according to claim 7, characterized in that: The bottom plate is provided with a groove for placing the pushing component.

10. The solenoid valve testing tool according to claim 8, characterized in that: The solenoid valve testing tool comprises a conventional electric control box and an emergency stop electric control box, and the conventional electric control box and the emergency stop electric control box are arranged on the outside of the side plate.

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