A pneumatic valve performance test bench

Abstract

The present invention relates to a pneumatic valve performance test bench, and relates to the technical field of pneumatic valve performance testing, which includes a workbench, a feed trough is provided on the surface of the workbench, a plurality of feed rollers are rotatably arranged in the feed trough, a feed belt is provided on the feed rollers through a common tensioning sleeve, a feed motor for driving the feed rollers to rotate is provided on the workbench; a plurality of clamping plates are provided on the feed belt, and a group of limit plates are symmetrically provided between adjacent clamping plates; a group of detection seats are slidably provided on the workbench, a step blocking end configured with a detector is provided on the detection seat, a sliding assembly is provided on the workbench, and the sliding assembly is used to drive two detection seats to slide toward or away from each other, and a material receiving box is also provided in the feed trough. The present application has the effects of reducing manual labor, facilitating batch testing of pneumatic valves, and improving the degree of automation and testing efficiency of the testing device.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic valve performance testing, in particular to a pneumatic valve performance testing platform. Background Art

[0002] At present, pneumatic valves are devices used to control the direction, pressure, and flow of gas in gas systems. They are devices that make the medium in pipes and equipment flow or stop and can control its flow.

[0003] A pneumatic valve test bench is designed in the related technology, which includes a first step blocking end with a gas speed sensor and a second step blocking end with a high-pressure gas end. A clamp is slidably arranged between the first step blocking end and the second step blocking end. The first step blocking end is connected to the hydraulic cylinder, and the second step blocking end is connected to the air pump. During the test, the pneumatic valve is placed on the clamp and fixed with the clamp. The hydraulic cylinder is opened, and the hydraulic cylinder drives the first step blocking end to move. The first step blocking end matches with one of the ends of the pneumatic valve. The other end of the test pneumatic valve is pushed to the position of the second step blocking end, so that the position of the second step blocking end matches with the other end of the pneumatic valve. Finally, the air pump is opened, and the air pump sprays gas through the high-pressure gas end. The controller detects through the gas speed sensor on the first step blocking end.

[0004] In the process of implementing this application, it was found that there are at least the following problems in this technology: when testing a large number of pneumatic valves in batches, the staff is required to frequently operate the clamps to clamp or loosen the pneumatic valves, or to operate the hydraulic cylinders in equal parts to connect the step blocking end with the pneumatic valve. The operation is relatively cumbersome, requires a lot of labor, and has a low degree of automation, so it needs to be improved. Summary of the invention

[0005] In order to reduce manual labor, facilitate batch testing of pneumatic valves, and improve the automation level and testing efficiency of the testing device, the present application provides a pneumatic valve performance test bench.

[0006] The pneumatic valve performance test bench provided in this application adopts the following technical solution:

[0007] A pneumatic valve performance test bench comprises a workbench, a feed trough is provided on the surface of the workbench, a plurality of feed rollers are rotatably arranged in the feed trough, a feed belt is provided on the feed rollers through a common tensioning sleeve, and a feed motor for driving the feed rollers to rotate is provided on the workbench; a plurality of clamping plates are provided on the feed belt, and the clamping plates are used to clamp the pneumatic valve to be tested, and a group of limit plates are symmetrically arranged between adjacent clamping plates; a group of detection seats are slidably arranged on the workbench, the detection seats are symmetrically arranged on both sides of the feed trough, a step blocking end with a detector is provided on the detection seat, a sliding component is provided on the workbench, and the sliding component is used to drive two detection seats to slide toward or away from each other, and a material receiving box is also provided in the feed trough, and the material receiving box is located below one end of the feed belt.

[0008] By adopting the above technical scheme, when it is necessary to perform batch testing on multiple pneumatic valves, the pneumatic valves are placed between the clamping plates in sequence, the clamping plates can be abutted against the two sides of the pneumatic valves, and the pneumatic valves are inserted into the limit plates between the clamping plates at the same time, the limit plates can be abutted against the two ends of the pneumatic valves, thereby limiting the pneumatic valves between the clamping plates, and the feed roller is driven to rotate by the feed motor, and the feed roller abuts against the feed belt, driving the feed belt to transmit on the conveyor trough, thereby driving several clamping plates to transmit along the length direction of the workbench at the same time, and the clamping plate transports the pneumatic valve to be tested to between the test seats, at which time the feed motor stops working, and then the two test seats are driven to slide toward each other through the sliding assembly, so that the step blocking end on the test seat extends into the two ends of the pneumatic valve and abuts against the pneumatic valve, and then the step is opened. The blocking end cooperates with the detector on the step blocking end to detect the pneumatic valve; after the detection is completed, the sliding assembly drives the step blocking end and the pneumatic valve to disengage from each other, and the feeding motor continues to drive the clamping plate and the tested pneumatic valve to transmit. When the pneumatic valve is transmitted to the feeding roller at the edge, due to the influence of the steering of the conveyor belt, the distance between the two adjacent clamping plates will become larger. At this time, under the action of gravity, the pneumatic valve automatically disengages from the clamping of the clamping plate and falls into the receiving box, and the receiving box is used to recycle the pneumatic valve after the detection; the whole process only requires manual placement of the pneumatic valve between adjacent clamping plates in turn, and the testing device automatically detects and recycles the transported pneumatic valves, which reduces manual labor, facilitates batch testing of pneumatic valves, and improves the automation degree and testing efficiency of the testing device.

[0009] Preferably, the sliding assembly includes a rack, a mounting frame, a gear and a rotating member. A group of sliding grooves are symmetrically opened on the inner wall of the feed trough. The rack is slidingly arranged in the sliding grooves. The detection seat is arranged on the rack. The mounting frame is arranged on the workbench. The gear is rotatably arranged on the mounting frame. The rotating member is arranged on the workbench, and the rotating member is used to drive the gear to rotate.

[0010] By adopting the above technical solution, when it is necessary to drive the two detection seats to slide toward or away from each other to drive the step blocking end to move closer to or away from the pneumatic valve, the gear is driven to rotate through the rotating part, and the gear is simultaneously against the two racks, thereby driving the rack to slide in the slide groove along the length direction of the slide groove, and the sliding of the rack drives the detection seat to slide at the same time. It only needs to rotate the gear to drive the symmetrical detection seats to slide relative to each other, which is convenient and fast to control while achieving low cost.

[0011] Preferably, the rotating part includes a rotating motor, a worm wheel and a worm, the rotating motor is arranged on a mounting frame, the worm is connected to a driving shaft of the rotating motor, the worm wheel is arranged at one end of the gear, the worm wheel and the gear are coaxially arranged, and the worm and the worm wheel are meshed with each other.

[0012] By adopting the above technical scheme, the rotating motor drives the worm to rotate, the worm and the worm wheel are against each other, and then drive the gear to rotate. The worms can be automatically locked. Then, when the detection seat slides and drives the step blocking end to be against the pneumatic valve, the position of the step blocking end can be quickly fixed, which is beneficial to improve the stability of the step blocking end detection and thus improve the test accuracy.

[0013] Preferably, a proximity switch is provided on the workbench, and the proximity switch and the feeding motor are both signal-connected to a controller, and the controller is used to control the feeding motor to stop working and control the rotating motor to start working when the proximity switch detects the pneumatic valve.

[0014] Preferably, a pressure sensor is provided on the opposite surface of the step blocking end, the pressure sensor signal is connected to the controller signal, the rotating motor is connected to the controller signal, and the controller controls the rotating motor to stop working when the pressure value detected by the pressure sensor reaches a preset value.

[0015] By adopting the above technical solution, the feed motor drives the feed belt to transport the pneumatic valve. When the pneumatic valve is transmitted to between the step blocking ends, the proximity switch can receive the signal and control the feed motor to stop working through the controller, and then the rotating motor starts working to make the two step blocking ends approach each other; and when the step blocking end is against the pneumatic valve, the pressure sensor will receive the pressure, and when the pressure value detected by the pressure sensor reaches the preset value, it is judged that the connection and fixation between the step blocking end and the pneumatic valve are completed at this time, and then the controller controls the rotating motor to stop working, so that there is no need for human control of the feed motor and the rotating motor, which greatly improves the automation level of the device.

[0016] Preferably, the detection seat includes an adjustment seat, a detection platform and an adjusting bolt, the adjustment seat and the rack are connected to each other, the adjustment seat passes through a slide groove, the adjustment seat and the slide groove are adapted to each other, the detection platform is fixedly set on the top of the adjustment seat, the step blocking end is set on the detection platform, the adjusting bolt passes through the adjustment seat and the rack for rotational connection, and the adjusting bolt is threadedly connected to the adjustment seat.

[0017] By adopting the above technical scheme, when testing pneumatic valves of different specifications, it is necessary to change the height of the step blocking end. The adjusting bolt can be turned. At this time, the slide groove limits and guides the adjusting seat. Since the adjusting bolt is threadedly connected to the adjusting seat, the adjusting seat can slide in the slide groove along the depth direction of the slide groove when the adjusting bolt is turned, thereby changing the height of the adjusting seat, thereby changing the height of the step blocking end on the testing platform, making it convenient for the step blocking end to dock and test pneumatic valves of different specifications, which is beneficial to improving the applicability of the device.

[0018] Preferably, a clamping block is provided at one end of the limiting plate, and a clamping slot for the clamping block to be inserted and clamped is provided at the top end of the clamping plate, and a plurality of the clamping slots are symmetrically provided.

[0019] Preferably, the side wall of the clamping plate is provided with a thickening pad, and the thickening pad is detachably connected to the clamping plate via Velcro.

[0020] By adopting the above technical solution, the card block is inserted into different card slots, so that the distance between the limit plates can be changed, thereby facilitating the limit plates to limit pneumatic valves of different widths; and by increasing or decreasing the number of thickening pads through Velcro, the space between the clamping plates can be adjusted, which facilitates the transportation and inspection of pneumatic valves of different specifications.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. By setting up a workbench, a feeding trough, a feeding roller, a feeding belt, a feeding motor, a clamping plate, a limit plate, a detection seat, a step blocking end and a sliding assembly, the pneumatic valve is placed between the clamping plates in sequence, and the feeding motor transports the pneumatic valve. When the pneumatic valve is located between the detection seats, the sliding assembly drives the two step blocking ends to approach each other to detect the pneumatic valve. The whole process only requires manual placement of the pneumatic valve between adjacent clamping plates in sequence, and the testing device automatically detects and recycles the transported pneumatic valves, which reduces manual labor, facilitates batch testing of pneumatic valves, and improves the automation and testing efficiency of the testing device;

[0023] 2. By setting a rack, a mounting frame, a gear, a rotating motor, a worm wheel and a worm, the rotating motor drives the worm wheel to rotate, thereby driving the gear to rotate, and the gear simultaneously abuts against two racks, thereby driving the rack to slide in the slide groove along the length direction of the slide groove, and the sliding of the rack drives the detection seat to slide at the same time, and the symmetrical detection seat can be driven to slide relatively only by rotating the gear, which is convenient and fast to control while achieving low cost;

[0024] 3. By setting an adjustment seat, a testing platform and an adjusting bolt, and by rotating the adjusting bolt, the adjusting seat can be driven to slide in the depth direction of the slide groove, thereby changing the height of the adjustment seat, and then changing the height of the step blocking end on the testing platform, making it convenient for the step blocking end to dock and test pneumatic valves of different specifications, which is beneficial to improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a pneumatic valve performance test bench provided in an embodiment of the present application.

[0026] Figure 2 It is a partial cross-sectional view of a pneumatic valve performance test bench provided in an embodiment of the present application.

[0027] Figure 3 yes Figure 2 Enlarged view of part A.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. Workbench; 11. Material receiving box; 12. Proximity switch; 2. Feed trough; 21. Feed roller; 22. Feed belt; 3. Clamping plate; 31. Limiting plate; 4. Detection seat; 41. Adjustment seat; 42. Detection table; 43. Adjustment bolt; 5. Sliding assembly; 51. Rack; 52. Mounting frame; 53. Gear; 54. Rotating part; 61. Rotating motor; 62. Worm gear; 63. Worm; 7. Block; 71. Slot; 8. Thickening pad; 9. Slide; 10. Step blocking end. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The present application embodiment discloses a pneumatic valve performance test bench. Figure 1 and Figure 2The invention comprises a horizontally arranged workbench 1, a feeding trough 2 is provided on the upper surface of the workbench 1 along its length direction, a plurality of feeding rollers 21 are rotatably arranged in the feeding trough 2, the length direction of the feeding rollers 21 is arranged along the width direction of the feeding trough 2, and a feeding belt 22 is provided on the feeding rollers 21 in a common tensioning sleeve. A feeding motor is fixedly installed on the workbench 1, and is connected to one of the feeding rollers 21 through the driving shaft of the feeding motor. The feeding motor drives one of the feeding rollers 21 to rotate, and then drives the feeding belt 22 to transmit in the feeding trough 2. A receiving box 11 is also arranged in the feeding trough 2, and the receiving box 11 is located below one end of the feeding belt 22.

[0031] Reference Figure 1 and Figure 2 , a plurality of clamping plates 3 are arranged on the conveyor belt 22, and the clamping plates 3 are arranged along the width direction of the conveyor belt 22, and a group of limit plates 31 are symmetrically arranged between adjacent clamping plates 3. A group of detection seats 4 are slidably arranged on the workbench 1, and the detection seats 4 are symmetrically arranged on both sides of the conveyor trough 2. The opposite surfaces of the detection seats 4 are provided with step blocking ends 10 equipped with detectors, and a sliding assembly 5 is arranged on the workbench 1. When batch testing of multiple pneumatic valves is required, the pneumatic valves are placed between the clamping plates 3 in sequence, and the clamping plates 3 can be abutted against both sides of the pneumatic valves. At the same time, the pneumatic valves are inserted into the limit plates 31 between the clamping plates 3, and the limit plates 31 can be abutted against both ends of the pneumatic valves, thereby limiting the pneumatic valves between the clamping plates 3; the conveyor belt 22 is driven by the conveying motor to drive, and then the clamping plates 3 are driven to transport the pneumatic valve to be tested to between the detection seats 4, and then the two detection seats 4 are driven to slide toward each other by the sliding assembly 5, so that the step blocking ends on the detection seats 4 10 extends into both ends of the pneumatic valve and abuts against the pneumatic valve, and then the pneumatic valve is detected by opening the step blocking end 10 and cooperating with the detector on the step blocking end 10; after the detection, the feeding motor continues to drive the clamping plate 3 and the detected pneumatic valve to transmit, and when the pneumatic valve is transmitted to the edge of the feeding roller 21, due to the influence of the steering of the conveyor belt, the distance between the two adjacent clamping plates 3 will become larger. At this time, the pneumatic valve automatically breaks away from the clamping of the clamping plate 3 under the action of gravity and falls into the receiving box 11, and the receiving box 11 is used to recycle the detected pneumatic valve.

[0032] Reference Figure 2 and Figure 3The sliding assembly 5 includes a rack 51, a mounting frame 52, a gear 53 and a rotating member 54. A group of slide grooves 9 are symmetrically opened on the inner wall of the feed trough 2. The length direction of the slide groove 9 is arranged along the width direction of the workbench 1. The rack 51 is slidably arranged in the slide groove 9. The rack 51 and the slide groove 9 are adapted to each other. The detection seat 4 is arranged on the rack 51; the mounting frame 52 and the workbench 1 are fixed to each other, and the gear 53 is rotatably arranged on the mounting frame 52; the rotating member 54 includes a rotating motor 61, a worm wheel 62 and a worm 63. The rotating motor 61 is fixed to the mounting frame 52 by bolts, and the worm 63 is connected to the driving shaft of the rotating motor 61. The worm wheel 62 is fixedly arranged at one end of the gear 53, and the worm wheel 62 and the gear 53 are coaxially arranged, and the worm 63 and the worm wheel 62 are meshed with each other. When it is necessary to drive the two detection seats 4 to slide toward or away from each other to drive the step blocking end 10 to move closer to or away from the pneumatic valve, the rotating motor 61 drives the worm 63 to rotate, and the worm 63 abuts against the worm wheel 62, thereby driving the gear 53 to rotate. The gear 53 simultaneously abuts against the two racks 51, thereby driving the rack 51 to slide in the slide groove 9 along the length direction of the slide groove 9, and the rack 51 slides while driving the detection seat 4 to slide. It only needs to rotate the gear 53 to drive the symmetrical detection seats 4 to slide relative to each other. At the same time, the worm 63 and the worm 63 can be automatically locked to quickly fix the position of the step blocking end 10, which is beneficial to improve the stability of the step blocking end 10 during detection. At the same time, the control is convenient and fast to achieve low cost.

[0033] Reference Figure 2 The workbench 1 is provided with a proximity switch 12. The proximity switch 12 and the feed motor are both connected to the controller. The feed motor drives the feed belt 22 to transport the pneumatic valve. When the pneumatic valve is transmitted between the step blocking end 10, the proximity switch 12 can receive the signal and control the feed motor to stop working through the controller, and then the rotating motor 61 starts to work, so that the two step blocking ends 10 are close to each other. A pressure sensor is provided on the opposite surface of the step blocking end 10. The pressure sensor signal is connected to the controller signal, and the rotating motor 61 is connected to the controller signal. When the step blocking end 10 is against the pneumatic valve, the pressure sensor will receive pressure, and when the pressure value detected by the pressure sensor reaches a preset value, it is judged that the step blocking end 10 and the pneumatic valve are connected and fixed at this time, and then the controller controls the rotating motor 61 to stop working, so that there is no need for human control of the feed motor and the rotating motor 61, which greatly improves the automation of the device.

[0034] Reference Figure 1 and Figure 2The detection seat 4 includes an adjustment seat 41, a detection platform 42 and an adjustment bolt 43. The adjustment seat 41 and the rack 51 are connected to each other, and the adjustment seat 41 passes through the slide 9. The adjustment seat 41 and the slide 9 are adapted to each other. The detection platform 42 is fixedly arranged at the top of the adjustment seat 41, and the step blocking terminal 10 is arranged on the detection platform 42. The adjustment bolt 43 passes through the adjustment seat 41 and is rotatably connected with the rack 51, and the adjustment bolt 43 is threadedly connected with the adjustment seat 41. By rotating the adjustment bolt 43, the slide 9 limits and guides the adjustment seat 41. Since the adjustment bolt 43 is threadedly connected with the adjustment seat 41, when the adjustment bolt 43 is rotated, the adjustment seat 41 can slide in the slide 9 along the depth direction of the slide 9, thereby changing the height of the adjustment seat 41, thereby changing the height of the step blocking terminal 10 on the detection platform 42, which is convenient for the step blocking terminal 10 to dock and detect pneumatic valves of different specifications, which is conducive to improving the applicability of the device.

[0035] Reference Figure 2 A card block 7 is provided at one end of the limiting plate 31, and a card slot 71 is provided at the top of the clamping plate 3 for the card block 7 to be inserted and clamped, and a plurality of card slots 71 are symmetrically provided. A thickening pad 8 is also provided on the side wall of the clamping plate 3, and the thickening pad 8 is detachably connected to the clamping plate 3 by Velcro. A plurality of thickening pads 8 can be provided, and adjacent thickening pads 8 can also be detachably connected by Velcro. By inserting the card block 7 into different card slots 71, the distance between the limiting plates 31 can be changed, so that the limiting plates 31 can limit pneumatic valves of different widths; and by increasing or decreasing the number of thickening pads 8 by Velcro, the space between the clamping plates 3 can be adjusted, so that the transportation and inspection of pneumatic valves of different specifications can be facilitated, thereby further improving the scope of application of the device.

[0036] The implementation principle of a pneumatic valve performance test bench in an embodiment of the present application is as follows: when batch testing of multiple pneumatic valves is required, the pneumatic valves are placed between the clamping plates 3 in sequence, and the pneumatic valves are clamped and positioned by the clamping plates 3 and the limit plates 31, and then the feeding motor is turned on to drive the feeding belt 22 to transmit on the conveying trough, and the clamping plate 3 transports the pneumatic valve to be tested to between the testing seats 4; the proximity switch 12 receives a signal to control the rotation motor 61 to work, and the rotation motor 61 drives the gear 53 to rotate, and the gear 53 simultaneously abuts against the two racks 51, thereby driving the two testing seats 4 to slide toward each other, so that the step blocking end 10 on the testing seat 4 extends into the two ends of the pneumatic valve and abuts against the pneumatic valve, and then the pneumatic valve is tested by opening the step blocking end 10 and cooperating with the detector on the step blocking end 10. After the test is completed, the rotary motor 61 rotates in the opposite direction to drive the step blocking end 10 to separate from the pneumatic valve, and the feeding motor continues to drive the clamping plate 3 and the tested pneumatic valve to transmit. When the pneumatic valve is transmitted to the feeding roller 21 at the edge, due to the influence of the conveyor belt steering, the distance between the two adjacent clamping plates 3 will become larger. At this time, under the action of gravity, the pneumatic valve automatically separates from the clamping of the clamping plate 3 and falls into the receiving box 11. The receiving box 11 is used to recycle the pneumatic valve after the test. The entire test process only requires manual placement of the pneumatic valve between adjacent clamping plates 3, and the test device automatically tests the transported pneumatic valves in turn, which reduces manual labor, facilitates batch testing of pneumatic valves, improves the automation and test efficiency of the test device, and also has the advantages of easy control and low cost.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pneumatic valve performance test bench, comprising a workbench (1), characterized in that: The surface of the workbench (1) is provided with a feed trough (2), a plurality of feed rollers (21) are rotatably arranged in the feed trough (2), a feed belt (22) is provided on the feed rollers (21) through a common tension sleeve, and a feed motor for driving the feed rollers (21) to rotate is provided on the workbench (1); a plurality of clamping plates (3) are provided on the feed belt (22), the clamping plates (3) are used to clamp the pneumatic valve to be tested, and a group of limit plates (31) are symmetrically arranged between adjacent clamping plates (3); A group of detection seats (4) are provided for sliding, and the detection seats (4) are symmetrically arranged on both sides of the feed trough (2). The detection seats (4) are provided with step blocking ends (10) equipped with detectors. A sliding assembly (5) is provided on the workbench (1), and the sliding assembly (5) is used to drive the two detection seats (4) to slide towards each other or slide away from each other. A material receiving box (11) is also provided in the feed trough (2), and the material receiving box (11) is located below one end of the feed belt (22); the sliding assembly (5) includes a rack (51), a mounting frame (5 2), a gear (53) and a rotating member (54), a group of slide grooves (9) are symmetrically opened on the inner wall of the feed trough (2), the rack (51) is slidably arranged in the slide groove (9), the detection seat (4) is arranged on the rack (51), the mounting frame (52) is arranged on the workbench (1), the gear (53) is rotatably arranged on the mounting frame (52), the rotating member (54) is arranged on the workbench (1), and the rotating member (54) is used to drive the gear (53) to rotate; the detection seat (4) includes an adjustment seat (41), The detection platform (42) and the adjusting bolt (43) are connected to each other between the adjusting seat (41) and the rack (51), the adjusting seat (41) passes through the slide groove (9), the adjusting seat (41) and the slide groove (9) are adapted to each other, the detection platform (42) is fixedly arranged on the top of the adjusting seat (41), the step blocking end (10) is arranged on the detection platform (42), the adjusting bolt (43) passes through the adjusting seat (41) and is rotatably connected to the rack (51), and the adjusting bolt (43) is threadedly connected to the adjusting seat (41).

2. A pneumatic valve performance test bench according to claim 1, characterized in that: The rotating member (54) comprises a rotating motor (61), a worm wheel (62) and a worm (63); the rotating motor (61) is arranged on a mounting frame (52); the worm (63) and a driving shaft of the rotating motor (61) are connected to each other; the worm wheel (62) is arranged at one end of a gear (53); the worm wheel (62) and the gear (53) are coaxially arranged; and the worm (63) and the worm wheel (62) are meshed with each other.

3. A pneumatic valve performance test bench according to claim 2, characterized in that: The workbench (1) is provided with a proximity switch (12), and the proximity switch (12) and the feeding motor are both signal-connected to a controller, and the controller is used to control the feeding motor to stop working and control the rotating motor (61) to start working when the proximity switch (12) detects the pneumatic valve.

4. The pneumatic valve performance test bench according to claim 3 is characterized in that: A pressure sensor is provided on the opposite surface of the step blocking end (10); the pressure sensor signal is connected to the controller signal; the rotating motor (61) is connected to the controller signal; and the controller controls the rotating motor (61) to stop working when the pressure value detected by the pressure sensor reaches a preset value.

5. The pneumatic valve performance test bench according to claim 1, characterized in that: A clamping block (7) is provided at one end of the limiting plate (31), and a clamping slot (71) for the clamping block (7) to be inserted and clamped is provided at the top end of the clamping plate (3), and a plurality of the clamping slots (71) are symmetrically provided.

6. The pneumatic valve performance test bench according to claim 1, characterized in that: The side wall of the clamping plate (3) is provided with a thickening pad (8), and the thickening pad (8) is detachably connected to the clamping plate (3) via Velcro.

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