Valve opening and closing time measuring device

Abstract

The invention relates to the field of valve measurement, and discloses a valve opening and closing time measuring device which comprises a workbench, the top of the workbench is fixedly connected with a first mounting plate, the top of the first mounting plate is fixedly provided with a hydraulic rod, and the output end of the hydraulic rod is fixedly provided with a second mounting plate. A second mounting plate is fixedly connected to one side of the top of the workbench, a closed detection window is arranged at the bottom of the second mounting plate, infrared transmitting and receiving diodes are uniformly arranged in the closed detection window, connecting blocks are uniformly and fixedly connected to one side of the second mounting plate, clamping structures are arranged at the bottoms of the connecting blocks, and a third mounting plate is fixedly connected to one side of the top of the workbench. The electric suction cup is driven by the driving structure to move up and down or move left and right, so that valve rods of valves with different diameters are adsorbed, the valve rods are driven to move in the valves to perform opening and closing stroke operation, and the closed detection window is driven by the hydraulic rod to ascend or descend.

Description

Technical Field

[0001] The invention relates to the technical field of valve measurement, in particular to a valve switching time measuring device. Background Art

[0002] In modern industrial control systems, valves, as one of the core components, play a vital role in the process of pipeline medium transmission. In order to ensure the stability and safety of the system, the key performance indicators of the valve must be accurately evaluated. Among them, the switching time of the valve is an extremely important parameter, which directly affects the safety and efficiency of the entire process. However, there are still many challenges in measuring this parameter. Traditional methods usually rely on manual timing or simple electronic triggering mechanisms, which often cannot meet high-precision requirements. With the development of intelligent manufacturing technology, the industry has gradually realized the importance of automated and intelligent measurement tools, which not only improves work efficiency, but also reduces the risk of errors introduced by human factors. In addition, the market demand for higher precision and faster feedback is increasing, which has prompted the research and development and application of new technologies. Therefore, it is of far-reaching significance to research and develop an efficient and reliable valve switching time measurement system.

[0003] Traditional valve switching time measurement devices mainly rely on proximity switches to achieve positioning functions. When the target object reaches the preset point, a signal is sent to complete the recording operation. This method has a simple structure and low cost. In the early stage of industrial development, it is simple and easy to operate. It has been widely used in some scenarios where measurement accuracy is not high. It has met basic production needs to a certain extent. However, in actual use, the accuracy is reduced due to the unstable trigger level, which affects the measurement accuracy of the valve. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a valve switching time measuring device to solve the problem that the traditional valve switching time measuring device mainly relies on a proximity switch to achieve the positioning function, and sends a signal to complete the recording operation when the target object reaches a preset point. In actual use, the accuracy is reduced due to the unstable trigger level, which affects the measurement accuracy of the valve.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a valve switching time measuring device, comprising a workbench, a first mounting plate fixedly connected to the top of the workbench, a hydraulic rod fixedly arranged on the top of the first mounting plate, a second mounting plate fixedly arranged on the output end of the hydraulic rod, a closed detection window arranged at the bottom of the second mounting plate, infrared transmitting and receiving diodes are evenly arranged inside the closed detection window, a connecting block is evenly fixedly connected to one side of the second mounting plate, a clamping structure is arranged at the bottom of the connecting block, a third mounting plate is fixedly connected to one side of the top of the workbench, a driving structure is arranged on one side of the third mounting plate, and an electric suction cup is fixedly arranged on one side of the driving structure.

[0006] Preferably, the clamping structure comprises a connecting column, the top end of which is fixedly connected to the bottom of the connecting block, a piston is fixedly provided at the bottom end of the connecting column, and a cylinder body is provided on the outer wall of the piston.

[0007] Preferably, the bottom of the cylinder body is fixedly arranged on the top of the workbench, the exhaust port of the cylinder body is provided with an air pipe, and one end of the air pipe away from the cylinder body is connected to an air bag.

[0008] Preferably, one side of the airbag is fixedly connected to a limit plate, the bottom of the limit plate is fixedly connected to the top of the workbench, and the upper surface of the workbench is symmetrically provided with T-shaped grooves.

[0009] Preferably, a clamping plate is provided on the other side of the airbag, and a T-shaped slider is symmetrically fixedly connected to the bottom of the clamping plate, and the T-shaped slider is slidably connected in the T-shaped slide groove of the workbench.

[0010] Preferably, the side of the clamping plate away from the airbag is evenly fixedly connected with an anti-sliding block, and the side of the anti-sliding block away from the clamping plate is evenly provided with anti-slip grooves.

[0011] Preferably, the driving structure includes an electric slide rail, one side of the electric slide rail is fixedly set on one side of the third mounting plate, a first slider is set at the output end of the electric slide rail, one side of the first slider is fixedly connected to a protective box, the outer wall of the protective box is evenly provided with heat dissipation holes, a through hole is set on the side of the protective box away from the first slider, and a reduction motor is fixedly set on the top of the inner wall of the protective box.

[0012] Preferably, a worm is fixedly provided at the output end of the reduction motor, one end of the worm is rotatably connected to the inside of the protective box, the tooth end of the worm is meshingly connected to a turbine, the middle part of the turbine is fixedly connected to a lead screw, both ends of the lead screw are rotatably connected to the inside of the protective box, and the outer wall of the lead screw is threadedly connected to a second slider.

[0013] Preferably, the outer wall of the second slider is slidably connected to the inner wall of the protective box, one side of the second slider is symmetrically fixedly connected with a connecting rod, the outer wall of the connecting rod is slidably connected in the through hole of the protective box, the end of the connecting rod away from the second slider is fixedly connected with a connecting plate, and one side of the connecting plate is fixedly set on one side of the electric suction cup.

[0014] Preferably, the bottom of the workbench is evenly and fixedly connected with supporting legs, and a control panel is provided on one side of the workbench.

[0015] Working principle: When in use, place the valve to be measured on the workbench, and then drive the second mounting plate to move up or down through the hydraulic rod, thereby driving the connecting block to move up or down, thereby driving the connecting column to move up or down, and then driving the piston to move inside the cylinder, so that the air inside the cylinder is sent into or out of the airbag through the air pipe, causing the airbag to expand or contract, driving the clamping plate to slide in the T-shaped slide groove of the workbench through the T-shaped slider, moving closer or farther away from each other, thereby clamping and fixing the valve on the upper surface of the workbench, and preventing the valve from sliding through the anti-sliding block and the anti-slip groove, thereby enhancing the stability of the fixation. At the same time, the rise or fall of the second mounting plate drives the closed detection window to move up or down to meet the measurement needs of valves of different specifications.

[0016] Then, the electric slide rail drives the first slider to move up and down according to the diameter of the valve, thereby driving the protective box to move up and down, and then driving the electric suction cup to move up and down, so as to adjust the height position of the electric suction cup, dissipate heat through the heat dissipation holes, and drive the worm to rotate inside the protective box through the reduction motor, thereby causing the turbine to rotate, driving the screw rod to rotate inside the protective box, thereby driving the second slider to move horizontally left and right inside the protective box, causing the connecting rod to slide in the through hole of the protective box, thereby driving the connecting plate to move horizontally left and right, and then driving the electric suction cup to move horizontally, and the electric suction cup is used to adsorb and fix the valve stem of the valve, thereby driving the valve stem to move inside the valve to perform opening and closing stroke operations.

[0017] At the same time, the infrared transmitting and receiving diode is used to capture the displacement of the valve stem when the valve stem moves, thereby generating a corresponding pulse signal. After being processed by the digital filter network, effective information reflecting the change in valve stem displacement is extracted, and then the time consumed for the valve to open and close is calculated to complete the measurement.

[0018] The present invention provides a valve opening and closing time measuring device, which has the following beneficial effects: 1. The present invention drives the electric suction cup to move up and down or move left and right through the driving structure, so as to adsorb the valve stems of valves of different diameters, and then drive the valve stem to move in the valve to perform opening and closing stroke operations. The closed detection window is driven by the hydraulic rod to move up or down to meet the measurement requirements of valves of different specifications. When the valve stem moves, the displacement of the valve stem is captured by the infrared transmitting and receiving diode, thereby generating a corresponding pulse signal. After being processed by the digital filtering network, effective information reflecting the displacement change of the valve stem can be extracted, and then the time consumed for the valve opening and closing can be calculated.

[0019] 2. The present invention drives the connecting column to rise or fall through the connecting block, so that the piston moves inside the cylinder body, and then the airbag expands or contracts, driving the clamping plates to move closer to or away from each other, thereby clamping and unclamping the valve on the upper surface of the workbench, and preventing the valve from sliding through the anti-slip block and the anti-slip groove, thereby enhancing the stability of the fixation, thereby preventing the valve from shaking during measurement and affecting the measurement accuracy.

[0020] 3. The present invention drives the electric suction cup to move up and down according to the diameter of the valve through the electric slide rail, adjusts the height position of the electric suction cup, drives the worm to rotate inside the protection box through the reduction motor, drives the second slider to move horizontally left and right inside the protection box, makes the connecting rod slide in the through hole of the protection box, and then drives the electric suction cup to move horizontally, and fixes the valve stem of the valve through the electric suction cup, thereby driving the valve stem to move inside the valve, and perform opening and closing stroke operations, which is convenient for measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial structural schematic diagram of the second mounting plate of the present invention; Figure 3 It is a schematic diagram of the internal structure of the closed detection window of the present invention; Figure 4 It is a schematic diagram of the local structure of the connecting column of the present invention; Figure 5 It is a schematic diagram of the explosion of the local structure of the airbag of the present invention; Figure 6 It is a schematic diagram of the local structure of the T-shaped slideway of the present invention; Figure 7 It is a partial structural schematic diagram of the third mounting plate of the present invention; Figure 8 It is a schematic diagram of the internal structure of the protection box of the present invention.

[0022] Among them, 1. workbench; 2. supporting legs; 3. control panel; 4. first mounting plate; 5. hydraulic rod; 6. second mounting plate; 7. connecting block; 8. closed detection window; 9. connecting column; 10. cylinder body; 11. third mounting plate; 12. limit plate; 13. air pipe; 14. clamping plate; 15. anti-sliding block; 16. T-shaped sliding block; 17. anti-slip groove; 18. infrared transmitting and receiving diode; 19. piston; 20. airbag; 21. T-shaped sliding groove; 22. electric slide rail; 23. first sliding block; 24. protective box; 25. heat dissipation hole; 26. through hole; 27. connecting rod; 28. connecting plate; 29. ​​electric suction cup; 30. reduction motor; 31. worm; 32. turbine; 33. screw; 34. second sliding block. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides 1. A valve switch time measuring device, comprising a workbench 1, a first mounting plate 4 is fixedly connected to the top of the workbench 1, a hydraulic rod 5 is fixedly arranged on the top of the first mounting plate 4, a second mounting plate 6 is fixedly arranged on the output end of the hydraulic rod 5, a closed detection window 8 is arranged at the bottom of the second mounting plate 6, infrared transmitting and receiving diodes 18 are uniformly arranged inside the closed detection window 8, a connecting block 7 is uniformly fixedly connected to one side of the second mounting plate 6, a clamping structure is arranged at the bottom of the connecting block 7, a third mounting plate 11 is fixedly connected to one side of the top of the workbench 1, a driving structure is arranged on one side of the third mounting plate 11, and an electric suction cup 29 is fixedly arranged on one side of the driving structure.

[0025] Specifically, the workbench 1 is the basic bearing platform of the entire device, providing a stable installation foundation for other components. It has good rigidity and stability, can effectively resist vibration and impact that may be generated during the measurement process, and ensure the accuracy of the measurement. The valve is placed on the workbench 1, and the operation of the driving structure drives the electric suction cup 29 to move up and down or move left and right, so as to adsorb the valve stems of valves of different diameters, and then drive the valve stems to move in the valve to perform opening and closing stroke operations. The first mounting plate 4 is installed through the workbench 1, and the hydraulic rod 5 is installed through the first mounting plate 4. Through the operation of the hydraulic rod 5, the second mounting plate 6 is driven to move up or down, and then the closed detection window 8 is driven to move up or down to meet the measurement requirements of valves of different specifications.

[0026] The closed detection window 8 is made of high-strength and light-transmitting materials, which can not only effectively protect the internal infrared emitting and receiving diodes 18, but also ensure the stable transmission of infrared signals. The infrared emitting and receiving diodes 18 are evenly distributed inside the closed detection window 8, and can accurately detect the displacement changes of the valve stem. It uses highly sensitive photosensitive materials and can quickly respond to tiny displacements of the valve stem, generating corresponding electrical signal changes. When the valve stem moves, the displacement of the valve stem is captured by the infrared emitting and receiving diodes 18, thereby generating corresponding pulse signals. After being processed by the digital filtering network, effective information reflecting the displacement changes of the valve stem can be extracted, and then the time consumed for the valve switch can be calculated. At the same time, the closed design of the closed detection window 8 can effectively avoid interference from external light, thereby completing the measurement, thereby solving the problem that the traditional valve switch time measurement device mainly relies on proximity switches to realize the positioning function, and sends a signal when the target object reaches the preset point to complete the recording operation. In actual use, the accuracy is reduced due to the unstable trigger level, which affects the measurement accuracy of the valve.

[0027] At the same time, the rise or fall of the second mounting plate 6 drives the connection block 7 to rise or fall, thereby driving the clamping structure to operate, so that the valve on the upper surface of the workbench 1 is clamped and fixed by the clamping structure to prevent shaking during measurement and affect the measurement accuracy.

[0028] Please see attached Figure 1 -Attached Figure 6 The clamping structure includes a connecting column 9, the top of which is fixedly connected to the bottom of the connecting block 7, a piston 19 is fixedly provided at the bottom of the connecting column 9, and a cylinder body 10 is provided on the outer wall of the piston 19; the bottom of the cylinder body 10 is fixedly provided on the top of the workbench 1, an air pipe 13 is provided at the exhaust port of the cylinder body 10, and an air bag 20 is connected to the end of the air pipe 13 away from the cylinder body 10.

[0029] Specifically, by connecting the connecting column 9 and the connecting block 7, when the connecting block 7 rises or falls, the connecting column 9 is driven to rise or fall, thereby driving the piston 19 to move inside the cylinder 10. The cylinder 10 is fixed by the workbench 1 to ensure its stability, so that the air inside the cylinder 10 is sent into or extracted from the airbag 20 through the air pipe 13, thereby causing the airbag 20 to expand or contract. A high-precision seal is used between the piston 19 and the inner wall of the cylinder 10, which can not only ensure that the piston 19 slides smoothly in the cylinder 10, but also prevent gas leakage. The air pipe 13 set at the exhaust port of the cylinder 10 is made of a material with good flexibility and strong pressure resistance, thereby ensuring that the gas can flow smoothly between the cylinder 10 and the airbag 20.

[0030] Please see attached Figure 5 , Attachment Figure 6 One side of the airbag 20 is fixedly connected to a limit plate 12, the bottom of the limit plate 12 is fixedly connected to the top of the workbench 1, and the upper surface of the workbench 1 is symmetrically provided with T-shaped slide grooves 21; the other side of the airbag 20 is provided with a clamping plate 14, the bottom of the clamping plate 14 is symmetrically fixedly connected with a T-shaped slider 16, and the T-shaped slider 16 is slidably connected in the T-shaped slide groove 21 of the workbench 1; the side of the clamping plate 14 away from the airbag 20 is evenly fixedly connected with an anti-sliding block 15, and the side of the anti-sliding block 15 away from the clamping plate 14 is evenly provided with an anti-slip groove 17.

[0031] Specifically, one side of the airbag 20 is fixedly connected to the limit plate 12 by welding, and the bottom of the limit plate 12 is fixed to the top of the workbench 1, which plays a precise limiting role in the expansion and contraction of the airbag 20. The T-shaped slider 16 slides with the T-shaped groove 21 of the workbench 1, and the expansion or contraction of the airbag 20 is utilized to drive the clamping plate 14 to move closer to or away from each other on the top of the workbench 1, thereby clamping and releasing the valve on the upper surface of the workbench 1. The anti-sliding block 15 is made of a rubber material with a high friction coefficient, and the anti-slip grooves 17 evenly arranged on its surface further increase the friction between the valve and prevent the valve from sliding, thereby enhancing the stability of the fixation, thereby preventing the valve from shaking during measurement and affecting the measurement accuracy.

[0032] Please see attached Figure 7 , Attachment Figure 8 The driving structure includes an electric slide rail 22, one side of the electric slide rail 22 is fixedly arranged on one side of the third mounting plate 11, a first slider 23 is arranged at the output end of the electric slide rail 22, one side of the first slider 23 is fixedly connected to a protective box 24, the outer wall of the protective box 24 is evenly provided with heat dissipation holes 25, a through hole 26 is arranged on the side of the protective box 24 away from the first slider 23, and a reduction motor 30 is fixedly arranged on the top of the inner wall of the protective box 24.

[0033] Specifically, the third mounting plate 11 is used to install the electric slide rail 22. The protective box 24 fixedly connected to one side of the first slider 23 can not only protect the internal reduction motor 30 and other components, but also play a certain electromagnetic shielding role, reducing the impact of external electromagnetic interference on the operation of the equipment. The heat dissipation holes 25 evenly opened on the outer wall of the protective box 24 adopt a special heat dissipation design, which can effectively dissipate the heat generated by the reduction motor 30 during operation to ensure the normal operating temperature of the equipment. Through the setting of the first slider 23, the protective box 24 can be driven to move up and down according to needs, and then the electric suction cup 29 can be driven to move up and down. When the diameter of the valve is different, the height position of the electric suction cup 29 is adjusted, and the electric suction cup 29 is used to adsorb and fix the valve stem of the valve. The heat dissipation holes 25 are set to dissipate heat, and the reduction motor 30 is installed through the protective box 24.

[0034] Please see attached Figure 7 , Attachment Figure 8 A worm 31 is fixedly provided at the output end of the reduction motor 30, one end of the worm 31 is rotatably connected to the inside of the protective box 24, the tooth end of the worm 31 is meshingly connected to the turbine 32, the middle part of the turbine 32 is fixedly connected to a screw rod 33, both ends of the screw rod 33 are rotatably connected to the inside of the protective box 24, and the outer wall of the screw rod 33 is threadedly connected to a second slider 34; the outer wall of the second slider 34 is slidably connected to the inner wall of the protective box 24, one side of the second slider 34 is symmetrically fixedly connected to a connecting rod 27, the outer wall of the connecting rod 27 is slidably connected to the through hole 26 of the protective box 24, and the end of the connecting rod 27 away from the second slider 34 is fixedly connected to a connecting plate 28, and one side of the connecting plate 28 is fixedly set on one side of the electric suction cup 29.

[0035] Specifically, the worm 31 fixedly arranged at the output end of the reduction motor 30 has high meshing accuracy with the turbine 32, which can achieve efficient power transmission and precise motion control. The screw 33 fixedly connected to the middle part of the turbine 32 is rotatably connected to the inside of the protective box 24 at both ends through bearings to ensure the stability and concentricity of the screw 33 during rotation. The second slider 34 threadedly connected to the outer wall of the screw 33 cooperates with the thread of the screw 33 to convert the rotation of the screw 33 into stable linear motion. The outer wall of the second slider 34 is slidably matched with the inner wall of the protective box 24 to ensure the stability of the second slider 34 during movement. The connecting rod 27 symmetrically fixedly connected to one side of the second slider 34 cooperates with the through hole 26 of the protective box 24 to ensure the accuracy of the connecting rod 27 during sliding. The connecting plate 28 fixedly connected to the end of the connecting rod 27 away from the second slider 34 is tightly fixedly connected to the electric suction cup 29 by bolts to ensure the stability of the electric suction cup 29 during movement.

[0036] Through the operation of the reduction motor 30, the worm 31 is driven to rotate inside the protective box 24, thereby driving the turbine 32 to rotate, and then driving the screw rod 33 to rotate inside the protective box 24. The second slider 34 is threadedly connected to the screw rod 33, and the second slider 34 slides on the inner wall of the protective box 24. The rotation of the screw rod 33 drives the second slider 34 to move horizontally left and right inside the protective box 24, thereby driving the connecting rod 27 to slide in the through hole 26 of the protective box 24, thereby driving the connecting plate 28 to move horizontally left and right, and then driving the electric suction cup 29 to move horizontally. The valve stem of the valve is adsorbed and fixed by the electric suction cup 29, thereby driving the valve stem to move in the valve to perform opening and closing stroke operations, thereby facilitating measurement.

[0037] The bottom of the workbench 1 is evenly and fixedly connected with supporting legs 2 , and a control panel 3 is arranged on one side of the workbench 1 .

[0038] Specifically, the entire device is supported by the supporting legs 2 to ensure the stability of the device. The control panel 3 integrates a high-performance microprocessor chip and related peripheral circuits, which are responsible for controlling the operation of the device and the overall logical operation processing, and displaying the final measurement results. The operator can set measurement parameters, start measurement programs, and perform other operations through the control panel 3 to achieve convenient control of the entire measurement process.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve opening and closing time measuring device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a first mounting plate (4), the top of the first mounting plate (4) is fixedly provided with a hydraulic rod (5), the output end of the hydraulic rod (5) is fixedly provided with a second mounting plate (6), the bottom of the second mounting plate (6) is provided with a closed detection window (8), the inside of the closed detection window (8) is evenly provided with infrared transmitting and receiving diodes (18), one side of the second mounting plate (6) is evenly fixedly connected to a connecting block (7), the bottom of the connecting block (7) is provided with a clamping structure, the top of the workbench (1) is fixedly connected to a third mounting plate (11), one side of the third mounting plate (11) is fixedly provided with a driving structure, and one side of the driving structure is fixedly provided with an electric suction cup (29).

2. A valve opening and closing time measuring device according to claim 1, characterized in that: The clamping structure comprises a connecting column (9), the top end of the connecting column (9) is fixedly connected to the bottom of the connecting block (7), a piston (19) is fixedly provided at the bottom end of the connecting column (9), and a cylinder body (10) is provided on the outer wall of the piston (19).

3. A valve opening and closing time measuring device according to claim 2, characterized in that: The bottom of the cylinder body (10) is fixedly arranged on the top of the workbench (1), the exhaust port of the cylinder body (10) is provided with an air pipe (13), and the end of the air pipe (13) away from the cylinder body (10) is connected to an air bag (20).

4. A valve opening and closing time measuring device according to claim 3, characterized in that: One side of the airbag (20) is fixedly connected to a limit plate (12), the bottom of the limit plate (12) is fixedly connected to the top of the workbench (1), and the upper surface of the workbench (1) is symmetrically provided with T-shaped sliding grooves (21).

5. A valve opening and closing time measuring device according to claim 4, characterized in that: A clamping plate (14) is provided on the other side of the airbag (20), and a T-shaped slider (16) is symmetrically fixedly connected to the bottom of the clamping plate (14), and the T-shaped slider (16) is slidably connected in a T-shaped slide groove (21) of the workbench (1).

6. A valve opening and closing time measuring device according to claim 5, characterized in that: The side of the clamping plate (14) away from the airbag (20) is evenly fixedly connected with an anti-sliding block (15), and the side of the anti-sliding block (15) away from the clamping plate (14) is evenly provided with an anti-slip groove (17).

7. A valve opening and closing time measuring device according to claim 1, characterized in that: The driving structure comprises an electric slide rail (22), one side of the electric slide rail (22) is fixedly arranged on one side of a third mounting plate (11), a first slider (23) is arranged at the output end of the electric slide rail (22), one side of the first slider (23) is fixedly connected to a protection box (24), an outer wall of the protection box (24) is evenly provided with heat dissipation holes (25), a side of the protection box (24) away from the first slider (23) is provided with a through hole (26), and a reduction motor (30) is fixedly arranged on the top of the inner wall of the protection box (24).

8. A valve opening and closing time measuring device according to claim 7, characterized in that: A worm (31) is fixedly provided at the output end of the reduction motor (30), one end of the worm (31) is rotatably connected to the inside of the protection box (24), a tooth end of the worm (31) is meshingly connected to a turbine (32), a lead screw (33) is fixedly connected to the middle of the turbine (32), both ends of the lead screw (33) are rotatably connected to the inside of the protection box (24), and a second slider (34) is threadedly connected to the outer wall of the lead screw (33).

9. A valve opening and closing time measuring device according to claim 8, characterized in that: The outer wall of the second slider (34) is slidably connected to the inner wall of the protection box (24); a connecting rod (27) is symmetrically fixedly connected to one side of the second slider (34); the outer wall of the connecting rod (27) is slidably connected to the through hole (26) of the protection box (24); an end of the connecting rod (27) away from the second slider (34) is fixedly connected to a connecting plate (28); and one side of the connecting plate (28) is fixedly arranged on one side of the electric suction cup (29).

10. A valve opening and closing time measuring device according to claim 1, characterized in that: The bottom of the workbench (1) is evenly and fixedly connected with support legs (2), and a control panel (3) is provided on one side of the workbench (1).

Images