Electronic expansion valve pressure testing device

Abstract

The utility model discloses an electronic expansion valve pressure testing device, and relates to the technical field of electronic expansion valves, and the electronic expansion valve pressure testing device comprises a test board, the top end of the test board is fixedly connected with an air compressor body, one end of the air compressor body is fixedly connected with a conveying hose, and one end of the conveying hose is fixedly connected with a test connector. The top end of the test board is fixedly connected with a plugging piece, the top end of the test board is in sliding connection with a moving frame, one end of the moving frame is provided with a clamping mechanism, a connecting assembly is arranged in the clamping mechanism, the clamping mechanism comprises a connecting frame, and one end of the connecting frame is fixedly connected with one end of the moving frame. The expansion valve can be kept at a stable position in the testing process through clamping and fixing, the expansion valve is prevented from deviating in the testing process, and meanwhile side leakage of pressure can be avoided in the pressure testing process.

Description

Technical Field

[0001] The present application relates to the technical field of electronic expansion valves, and in particular to a pressure testing device for electronic expansion valves. Background Art

[0002] The electronic expansion valve is a key component in refrigeration and air conditioning systems. It precisely controls the refrigerant flow rate to adjust system parameters such as temperature and pressure, thereby ensuring efficient and stable system operation. With the continuous development of the refrigeration and air conditioning industry, the performance requirements for electronic expansion valves are becoming increasingly higher. At the same time, to improve production efficiency and product quality, a more accurate, efficient, and multifunctional electronic expansion valve pressure testing device is needed.

[0003] Regarding the above-mentioned related technologies, the inventor believes that the existing pressure testing device is not equipped with a structure to fix the expansion valve structure to be tested. During the test, the tested expansion valve is prone to movement and deviation during the pressure output process, thereby affecting the accuracy of the pressure test results of the expansion valve by the pressure testing device. Utility Model Content

[0004] The purpose of the present application is to provide an electronic expansion valve pressure testing device to improve the problem that the existing testing device cannot stably fix the expansion valve being tested during testing.

[0005] The electronic expansion valve pressure test device provided in this application adopts the following technical solution:

[0006] The top of the test bench is fixedly connected to the air compressor body, one end of the air compressor body is fixedly connected to the delivery hose, and one end of the delivery hose is fixedly connected to the test joint. The top of the test bench is fixedly connected to the movable frame, and one end of the movable frame is slidably provided with a clamping mechanism. The inside of the clamping mechanism is provided with a connecting assembly. The clamping mechanism includes a connecting frame, one end of the connecting frame is fixedly connected to one end of the movable frame, the top of the connecting frame is fixedly connected to a mounting plate, the upper inner wall of the mounting plate is fixedly connected to a motor, and the output end of the motor passes through the top of the connecting frame and is fixedly connected to a bidirectional screw, the outer surface of the bidirectional screw is threadedly sleeved with two moving rods, one end of the connecting frame is provided with a limiting groove for matching with two moving rods, and one end of the two moving rods respectively passes through the two limiting grooves and is fixedly connected to the connecting plate, and one end of the two connecting plates is movably connected to the clamping plate through the connecting assembly.

[0007] By adopting the above technical solution, the delivery hose makes pressure transmission more flexible and convenient for test operation, while the test connector ensures the tightness and stability of the connection with the electronic expansion valve. The sealing piece plays a key sealing role to prevent pressure leakage and ensure the reliability of the test results. The movable frame enables the clamping mechanism to flexibly adjust its position to adapt to electronic expansion valves of different sizes, thereby improving the versatility of the device. The motor provides a power source, enabling the clamping mechanism to automatically adjust the clamping width to adapt to electronic expansion valves of different sizes. The rotation of the bidirectional screw drives the two movable rods to move synchronously under the restriction of the limit groove, so that the clamping plate can stably clamp the electronic expansion valve, ensuring that the position of the electronic expansion valve is fixed during the test and improving the accuracy of the test results.

[0008] Optionally, the connecting assembly includes a positioning rod, the bottom end of the positioning rod is fixedly connected to the outer surface of the clamping plate, the bottom end of the connecting plate is provided with a positioning groove for cooperating with the positioning rod, and the outer surface of the positioning rod is slidingly connected to the inner wall of the positioning groove, one end of the positioning rod is provided with a first positioning hole, and one end of the connecting plate is provided with a second positioning hole for cooperating with the first positioning hole, and the inner walls of the first positioning hole and the second positioning hole are commonly threadedly connected with a positioning bolt.

[0009] By adopting the above technical solution, the connecting assembly enables the clamping plate to be easily replaced to adapt to electronic expansion valves of different shapes and sizes. At the same time, the cooperation between the positioning rod and the positioning groove ensures the installation stability of the clamping plate, and the positioning bolt further fixes the position of the clamping plate to ensure that the clamping plate will not loosen during the test, thereby improving the adaptability of the test device.

[0010] Optionally, a mounting shell is fixedly connected to one side of the top of the test bench, a control screen body is provided at one end of the mounting shell, a control button used in conjunction with the control screen body is provided at one end of the mounting shell, a transmission line is fixedly connected to one end of the air compressor body, and the end of the transmission line facing away from the air compressor body passes through the lower part of one end of the mounting shell.

[0011] By adopting this technical solution, the control panel and control buttons allow testers to easily operate and monitor the pressure test device, improving the convenience and controllability of the test. The transmission line ensures signal transmission between the air compressor and the control panel, achieving precise control of the pressure test process.

[0012] Optionally, the sealing member and one end of the test connector are both made of sealing materials.

[0013] By adopting the above technical solution, the sealing materials of the sealing piece and the test joint ensure that no leakage occurs during the pressure test, thereby ensuring the accuracy of the test results.

[0014] Optionally, a first long groove is opened at the top of the test bench, a first telescopic gas rod is fixedly connected to the inner wall of one side of the first long groove, and a slider is fixedly connected to the output end of the first telescopic gas rod, and the top of the slider is fixedly connected to the bottom end of the movable frame.

[0015] By adopting the above technical solution, the first telescopic gas rod can drive the movable frame to slide in the first long slot, thereby adjusting the position of the clamping mechanism to accommodate electronic expansion valves of different lengths.

[0016] Optionally, a second long groove is provided at the top of the test bench, a second telescopic gas rod is fixedly connected to the inner wall of one side of the second long groove, and the output end of the second telescopic gas rod is fixedly connected to a vertical rod, the top of the vertical rod is fixedly connected to a connecting sleeve, and the connecting sleeve is fixedly sleeved on the outer surface of the test joint.

[0017] By adopting the above technical solution, the second telescopic gas rod can drive the test connector to move in the second long slot, so that the test connector can be accurately connected to the electronic expansion valve.

[0018] Optionally, the two moving rods are respectively threadedly sleeved on different thread directions of the bidirectional screw, and one end of the two moving rods is slidably connected to the inner wall of one side of the connecting frame.

[0019] By adopting the above technical solution, the different thread directions of the bidirectional screw enable the two moving rods to move synchronously in opposite directions, realizing rapid clamping and loosening of the clamping plate. The sliding connection with the inner wall of the connecting frame ensures the movement stability of the moving rods.

[0020] Optionally, the outer surface shape of the positioning rod and the inner wall shape of the positioning groove are both T-shaped, and the inner wall threads of the first positioning hole and the second positioning hole match the outer surface threads of the positioning bolt.

[0021] By adopting this technical solution, the "T"-shaped positioning rod and positioning slot ensure the clamping plate is securely installed, preventing it from falling off during testing. The matching threads of the positioning bolt and the first and second positioning holes ensure that the clamping plate is accurately fixed in place.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The utility model provides a clamping mechanism, which can keep the expansion valve in a stable position during the test, thereby avoiding the expansion valve from shifting during the test. At the same time, during the pressure test, it can also avoid side leakage of pressure, thereby improving the accuracy of the test results of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a schematic structural diagram of the utility model.

[0025] Figure 2 It is a partial structural diagram of the utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of the utility model.

[0027] Figure 4 This is a structural schematic diagram of the clamping mechanism of the present invention from another perspective.

[0028] Figure 5 This is a schematic diagram of the exploded structure of the connection component of the utility model.

[0029] In the figure, 1. test bench; 2. clamping mechanism; 21. connecting plate; 22. clamping plate; 23. limiting slot; 24. motor; 25. moving rod; 26. bidirectional screw; 27. connecting frame; 28. mounting plate; 3. connecting assembly; 31. positioning slot; 32. positioning rod; 33. first positioning hole; 34. positioning bolt; 35. second positioning hole; 4. blocking piece; 5. air compressor body; 6. transmission line; 7. mounting shell; 8. control screen body; 9. control button; 10. first long slot; 11. slider; 12. first telescopic gas rod; 13. second long slot; 14. vertical rod; 15. second telescopic gas rod; 16. delivery hose; 17. connecting sleeve; 18. test joint; 19. moving frame. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0031] An electronic expansion valve pressure test device, referring to Figure 1 and Figure 2, including a test bench 1, an air compressor body 5, a transmission line 6, a mounting shell 7, a control screen body 8, a control button 9, a delivery hose 16, a test connector 18, a mobile frame 19, a clamping mechanism 2, a connecting assembly 3 and a blocking piece 4. The bottom ends of the air compressor body 5, the mounting shell 7 and the blocking piece 4 are all fixedly connected to the top of the test bench 1, and one end of the transmission line 6 and the delivery hose 16 are fixedly connected to one end of the air compressor body 5 to facilitate providing a pressure source during the test, and one end of the delivery hose 16 is fixedly connected to the test connector 18 to facilitate connection to the electronic expansion valve under test through the test connector 18, so as to facilitate the expansion The pressure of the valve is tested, and one end of the sealing member 4 and the test connector 18 are both made of sealing materials, which is convenient for improving the sealing performance during the test and avoiding pressure leakage. The control screen body 8 and the control button 9 are both arranged at one end of the mounting shell 7, which is convenient for controlling the test device during the test. The bottom end of the mobile frame 19 is slidably connected to the top of the test bench 1, the clamping mechanism 2 is arranged at one end of the mobile frame 19, and the connecting component 3 is arranged inside the clamping mechanism 2. The clamping mechanism 2 serves to stably fix the expansion valve under test, and the connecting component 3 facilitates the replacement of a suitable chuck to better fix expansion valves of different specifications.

[0032] Reference Figure 2 A first long groove 10 is provided at the top of the test bench 1, and a first telescopic gas rod 12 is fixedly connected to the inner wall of one side of the first long groove 10, and the output end of the first telescopic gas rod 12 is fixedly connected to a slider 11, so that the output end of the first telescopic gas rod 12 drives the slider 11 to move, and the bottom end of the slider 11 is slidably connected to the lower inner wall of the first long groove 10, and the top of the slider 11 is fixedly connected to the bottom end of the mobile frame 19, so that the movement of the slider 11 drives the mobile frame 19 to move, so that the position of the clamping mechanism 2 on the mobile frame 19 is adjusted, which facilitates the clamping mechanism 2 to better clamp the tested expansion valve.

[0033] Reference Figure 2 A second long slot 13 is provided at the top of the test bench 1, and a second telescopic gas rod 15 is fixedly connected to the inner wall of one side of the second long slot 13, and the output end is fixedly connected to the vertical rod 14, and the bottom end of the vertical rod 14 is slidably connected to the lower inner wall of the second long slot 13, so that the second telescopic gas rod 15 drives the vertical rod 14 to move in the second long slot 13, and the top of the vertical rod 14 is fixedly connected to a connecting sleeve 17 used to cooperate with the test joint 18, and the connecting sleeve 17 is fixedly sleeved on the outer surface of the test joint 18, so that the vertical rod 14 moves through the connecting sleeve 17 to drive the test joint 18 to move and contact the expansion valve to be tested, so as to test the pressure of the expansion valve.

[0034] Reference Figure 3 and Figure 4The clamping mechanism 2 includes a connecting frame 27, a mounting plate 28, a bidirectional screw 26, a moving rod 25, a limiting groove 23, a connecting plate 21 and a clamping plate 22. One end of the connecting frame 27 is fixedly connected to one end of the moving frame 19. The connecting frame 27 plays a connecting role. The bottom end of the mounting plate 28 is fixedly connected to the top of the connecting frame 27. The upper inner wall of the mounting plate 28 is fixedly connected with the motor 24, and the output end of the motor 24 passes through the top of the connecting frame 27 and is fixedly connected to the top of the bidirectional screw 26, so that the output end of the motor 24 drives the bidirectional screw 26 to rotate. The bottom end of the bidirectional screw 26 is rotatably connected to the lower inner wall of the connecting frame 27. There are two moving rods 25, and the two moving rods 25 are respectively threaded on the bidirectional screw The outer surface of 26 is provided with different thread directions, which makes it convenient for the bidirectional screw 26 to rotate and drive the two moving rods 25 to move toward opposite sides or back to back, and one end of the two moving rods 25 is slidably connected to the inner wall of one side of the connecting frame 27. There are two limit grooves 23, and the two limit grooves 23 are both opened at one end of the connecting frame 27. One end of the two moving rods 25 passes through the two limit grooves 23 respectively, which makes it convenient for the limit grooves 23 to limit the moving rods 25 when moving. One end of the connecting plate 21 is fixedly connected to one end of the moving rod 25, which makes it convenient for the moving rod 25 to move and drive the connecting plate 21 to move. The movement of the connecting plate 21 causes the clamping plate 22 to move to stably fix the tested expansion valve, thereby improving the accuracy of the test results.

[0035] Reference Figure 5 The locating screw 34 is connected with the first locating hole 33 and the second locating hole 35 of the locating screw 34, so that the locating screw 34 can be fixed on the locating screw 34 of the locating screw 34 so as to prevent the locating screw from being damaged.

[0036] The implementation principle of the embodiment of the present application is: first, through the connecting component 3, select a suitable clamping plate 22, and clamp the positioning rod 32 into the corresponding positioning groove 31.

[0037] Then, the clamping plate 22 is firmly mounted on the connecting plate 21 by means of the positioning bolts 34 in conjunction with the first positioning holes 33 and the second positioning holes 35 , thereby increasing the use range of the clamping mechanism 2 of the testing device.

[0038] Next, the electronic expansion valve to be clamped is placed at a suitable position on the clamping plate 22 through the clamping mechanism 2 , and then the motor 24 is started, and the output end of the motor 24 drives the bidirectional screw 26 to rotate.

[0039] The rotation of the bidirectional screw 26 drives the two moving rods 25 to move in the limiting groove 23. The movement of the moving rods 25 drives the connecting plate 21 to move. The connecting plate 21 moves to stably position its electronic expansion valve by the clamping plate 22 connected to the connecting assembly 3.

[0040] Next, the first telescopic gas rod 12 is started, and the output end of the first telescopic gas rod 12 drives the expansion valve clamped by the clamping mechanism 2 on the movable frame 19 to move through the slider 11, so that the expansion valve moves to a position in contact with the sealing end of the blocking member 4.

[0041] Then, the second telescopic gas rod 15 is started, and the output end of the second telescopic gas rod 15 drives the vertical rod 14 to move. The movement of the vertical rod 14 drives the test connector 18 to move through the connecting sleeve 17, so that the output end of the test connector 18 contacts the end of the expansion valve.

[0042] Next, start the air compressor body 5 to provide a pressure source through the delivery hose 16, and then control the air compressor body 5 through the control button 9, the control screen body 8 and the transmission line 6 to perform a pressure test on its expansion valve.

[0043] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An electronic expansion valve pressure testing device, comprising a test bench (1), characterized in that: The top of the test bench (1) is fixedly connected to an air compressor body (5), one end of the air compressor body (5) is fixedly connected to a delivery hose (16), and one end of the delivery hose (16) is fixedly connected to a test connector (18), the top of the test bench (1) is fixedly connected to a blocking member (4), the top of the test bench (1) is slidably connected to a mobile frame (19), one end of the mobile frame (19) is provided with a clamping mechanism (2), and a connecting assembly (3) is provided inside the clamping mechanism (2); The clamping mechanism (2) includes a connecting frame (27), one end of the connecting frame (27) is fixedly connected to one end of the movable frame (19), the top of the connecting frame (27) is fixedly connected to a mounting plate (28), the upper inner wall of the mounting plate (28) is fixedly connected to a motor (24), and the output end of the motor (24) passes through the top of the connecting frame (27) and is fixedly connected to a bidirectional screw (26), the outer surface of the bidirectional screw (26) is threadedly sleeved with two movable rods (25), one end of the connecting frame (27) is provided with a limiting groove (23) used to match the two movable rods (25), and one end of the two movable rods (25) respectively passes through the two limiting grooves (23) and is fixedly connected to a connecting plate (21), and one end of the two connecting plates (21) is movably connected to a clamping plate (22) through a connecting assembly (3).

2. The electronic expansion valve pressure testing device according to claim 1, characterized in that: The connecting assembly (3) includes a positioning rod (32), the bottom end of the positioning rod (32) is fixedly connected to the outer surface of the clamping plate (22), the bottom end of the connecting plate (21) is provided with a positioning groove (31) used to match the positioning rod (32), and the outer surface of the positioning rod (32) is slidably connected to the inner wall of the positioning groove (31), one end of the positioning rod (32) is provided with a first positioning hole (33), one end of the connecting plate (21) is provided with a second positioning hole (35) used to match the first positioning hole (33), and the inner walls of the first positioning hole (33) and the second positioning hole (35) are threadedly connected with a positioning bolt (34).

3. The electronic expansion valve pressure testing device according to claim 1, characterized in that: A mounting shell (7) is fixedly connected to one side of the top of the test bench (1), a control screen body (8) is provided at one end of the mounting shell (7), a control button (9) used in conjunction with the control screen body (8) is provided at one end of the mounting shell (7), and a transmission line (6) is fixedly connected to one end of the air compressor body (5), and an end of the transmission line (6) facing away from the air compressor body (5) passes through the lower part of one end of the mounting shell (7).

4. The electronic expansion valve pressure testing device according to claim 1, characterized in that: One end of the blocking member (4) and the test connector (18) are both made of sealing material.

5. The electronic expansion valve pressure testing device according to claim 1, characterized in that: A first long slot (10) is provided at the top of the test bench (1), a first telescopic gas rod (12) is fixedly connected to an inner wall of one side of the first long slot (10), and a slider (11) is fixedly connected to the output end of the first telescopic gas rod (12), and the top end of the slider (11) is fixedly connected to the bottom end of the movable frame (19).

6. The electronic expansion valve pressure testing device according to claim 1, characterized in that: A second long slot (13) is provided at the top of the test bench (1), a second telescopic gas rod (15) is fixedly connected to an inner wall of one side of the second long slot (13), and an output end of the second telescopic gas rod (15) is fixedly connected to a vertical rod (14), a top end of the vertical rod (14) is fixedly connected to a connecting sleeve (17), and the connecting sleeve (17) is fixedly sleeved on the outer surface of the test joint (18).

7. The electronic expansion valve pressure testing device according to claim 1, characterized in that: The two moving rods (25) are respectively threadedly sleeved on different thread directions of the bidirectional screw (26), and one end of the two moving rods (25) is slidably connected to the inner wall of one side of the connecting frame (27).

8. The electronic expansion valve pressure testing device according to claim 2, characterized in that: The outer surface shape of the positioning rod (32) and the inner wall shape of the positioning groove (31) are both T-shaped, and the inner wall threads of the first positioning hole (33) and the second positioning hole (35) are matched with the outer surface threads of the positioning bolt (34).

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