Testing device of pneumatic valve

Abstract

The invention relates to a testing device of a pneumatic valve, and relates to the technical field of pneumatic valve testing, the testing device of the pneumatic valve comprises a base, a positioning mechanism and a clamping mechanism, the positioning mechanism abuts against multiple side walls of the pneumatic valve for positioning, and the clamping mechanism comprises a fixing piece arranged on the base; the movable part is arranged on the base in a sliding mode and used for being connected with a testing machine; the driving assembly is used for driving the movable part to slide. The pneumatic valve is placed on the base and abuts against the fixed part for positioning, the positioning mechanism abuts against the multiple side walls of the pneumatic valve for positioning, the driving assembly drives the movable part to be close to the pneumatic valve so as to be matched with the fixed part for positioning the pneumatic valve, and meanwhile the movable part is also used for being connected with a testing machine. The pneumatic valve is started for testing, after testing is completed, the driving piece drives the movable piece to be away from the fixed piece, then the pneumatic valve is taken down, testing of the pneumatic valve is completed, the stability and convenience of testing are improved, and the testing efficiency and effect are improved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic valve testing, and in particular to a pneumatic valve testing device. Background Art

[0002] In modern industrial production processes, a large number of pneumatic valves are required, such as seat valves and anti-mix valves, which use air pressure to control the flow and direction of products in pipelines.

[0003] After the pneumatic valve is produced, the function of the valve body needs to be tested. Generally, the valve body needs to be fixed to the base, and then the testing machine is fixedly connected to the valve body. The pneumatic valve is then tested multiple times and the testing machine obtains the final test results. However, the test process requires multiple clamping and disassembly, which greatly prolongs the test time and reduces the test efficiency of the pneumatic valve. Summary of the Invention

[0004] In order to improve the testing efficiency of pneumatic valves, the present application provides a testing device for pneumatic valves.

[0005] The present application provides a pneumatic valve testing device, which adopts the following technical solution: A pneumatic valve testing device includes a base, a positioning mechanism and a clamping mechanism provided on the base, wherein the positioning mechanism abuts against multiple side walls of the pneumatic valve for positioning, and the clamping mechanism includes: A fixing member, arranged on the base; The movable part is slidably disposed on the base in a direction approaching or moving away from the fixed part and is used to connect with the testing machine; The driving assembly is used to drive the movable part to slide, so that the fixed part and the movable part abut against multiple side walls of the pneumatic valve and cooperate with the positioning mechanism to position the pneumatic valve and connect it to the testing machine.

[0006] By adopting the above technical solution, the pneumatic valve is placed on the base and rests against the fixed part for positioning, the positioning mechanism rests against multiple side walls of the pneumatic valve for positioning, and then the driving assembly drives the movable part close to the pneumatic valve, so that the fixed part and the movable part rest against multiple side walls of the pneumatic valve for positioning, thereby realizing the positioning of the pneumatic valve. At the same time, the movable part is also used to realize connection with the testing machine, so as to position the pneumatic valve. The pneumatic valve is started, and the testing machine is started for testing. After the test is completed, the driving part drives the movable part away from the fixed part, and then the pneumatic valve is removed to complete the test of the pneumatic valve, thereby improving the stability and convenience of the test, and improving the test efficiency and effect.

[0007] Optionally, the positioning mechanism includes: Two positioning members are slidably arranged on the base toward each other; Two elastic members are provided on the base and are respectively connected to the two positioning members and are used to push the two positioning members to press against the two opposite side walls of the pneumatic valve for positioning; Two pushing components are arranged on the movable part and are used to push the two positioning parts away from each other and facilitate the placement of the pneumatic valve.

[0008] By adopting the above technical solution, when the movable part moves away from the fixed part to unlock the pneumatic valve, the pushing component drives the two positioning parts to move away from each other, thereby facilitating the removal of the pneumatic valve after the test is completed and the pneumatic valve to be tested is reinserted, and then the pushing component is used to unlock the positioning part. The two positioning parts are moved closer to each other and rest against the pneumatic valve for positioning under the action of the elastic part, thereby improving the test stability and convenience, thereby improving the test efficiency and effect.

[0009] Optionally, the pushing component includes: A push rod is slidably disposed on the movable member along the sliding direction of the movable member and is connected to the positioning member through a connecting assembly; The locking member is used to position the push rod and the movable member. The movement of the movable member drives the push rod to move at the same time. The two push rods move and drive the two positioning members to move away from each other through the connecting assembly. When the positioning member needs to be unlocked, the locking member unlocks the push rod and makes the two positioning members approach each other under the action of the elastic member.

[0010] By adopting the above technical solution, when the movable part approaches the fixed part, the locking part is in an unlocked state, that is, the movable part and the push rod slide against each other without driving the push rod to move. When the movable part and the fixed part clamp the pneumatic valve, the locking part locks the push rod, and then the pneumatic valve is tested.

[0011] After the test is completed, when the movable part moves away from the fixed part, the movable part moves to drive the push rod to move, and the push rod moves to drive the two positioning parts to move away from each other through the connecting component, thereby unlocking the pneumatic valve. After the pneumatic valve is removed and the pneumatic valve to be tested is placed, the locking part is unlocked, and the two positioning parts are moved closer to each other and pressed against the pneumatic valve for positioning under the action of the elastic part. At the same time, the movement of the two positioning parts also drives the push rod to move back to its original position through the connecting component, which facilitates the subsequent push of the two positioning parts to move, thereby improving the testing efficiency and effect of the pneumatic valve.

[0012] Optionally, the connection component includes: Connecting block 1 and connecting block 2 are arranged on the positioning member and the push rod and are provided with connecting surfaces that are in contact with each other and are in an inclined state. When the movable member moves away from the fixed member, the push rod is driven to move and the two positioning members are driven away from each other through the connecting surfaces.

[0013] By adopting the above technical solution, the movement of the push rod drives the positioning member to move through the connecting surface, so that the push rod and the positioning member can move in different directions, thereby improving the test efficiency and effect.

[0014] Optionally, the locking member includes: A moving part, provided on the movable part; The plug-in component is arranged on the piston rod of the moving component, and the moving component drives the plug-in component to be plugged and installed on the push rod for locking.

[0015] By adopting the above technical solution, the moving part drives the connector to be installed on the push rod for positioning, or the moving part drives the connector to disengage from the push rod for unlocking, thereby facilitating the locking and unlocking of the push rod and improving the testing efficiency.

[0016] Optionally, both of the push rods are provided with a limiting assembly for limiting the positioning member. When the movable member is pressed against the pneumatic valve for positioning, the limiting assembly is pressed against the two positioning members to lock and is used to prevent the two positioning members from moving away from each other. When the movable member moves away from the pneumatic valve to unlock, it drives the two limiting assemblies to move away from the two positioning members to unlock.

[0017] By adopting the above technical solution, the two positioning parts are prone to reverse extrusion of the elastic part when subjected to an applied force. If the applied force is greater than the elastic force, the positioning part will be pushed to move, thereby reducing the positioning effect of the pneumatic valve. In particular, when the pneumatic valve is running, the applied force is large, which further reduces the positioning effect of the pneumatic valve, reduces the accuracy of the test data, and reduces the test effect.

[0018] After the locking part is unlocked, the positioning part drives the push rod and the limit assembly to move back, and the limit assembly rests on the positioning part for positioning. After the movable part approaches the fixed part to position the pneumatic valve, the locking part locks the push rod, so that the movable part can lock the two positioning parts, thereby improving the positioning effect of the pneumatic valve and improving the test effect.

[0019] Optionally, the limiting component includes: Limit block 1, arranged on the positioning piece; The second limiting block is arranged on the push rod. Both the first limiting block and the second limiting block are provided with limiting surfaces that can be attached to each other and in an inclined state and are used to position the first limiting block.

[0020] By adopting the above technical solution, the positioning member is positioned by cooperating with the limiting surface, and the inclined limiting surface can decompose the force acting on the positioning member into forces in multiple directions, thereby further improving the positioning effect of the positioning member and improving the test effect.

[0021] Optionally, the driving component includes: A driving member, used for driving the movable member to move; The pressure detector is arranged on the movable part and is used to detect the pressure of the pneumatic valve on the movable part and is electrically connected to the driving part.

[0022] By adopting the above technical solution, the driving part drives the movable part and the pressure detector to move, the movable part rests on the pneumatic valve for positioning, and the pressure detector detects the pressure on the pneumatic valve. When the pressure reaches a specified value, the driving part stops moving for positioning. Therefore, clamping of pneumatic valves of different sizes can be easily achieved, thereby improving the positioning effect of pneumatic valves of various sizes.

[0023] Optionally, clamping members are detachably provided on both side walls of the fixed member and the movable member via connecting members, and the clamping members are used to clamp and position the pneumatic valve.

[0024] By adopting the above technical solution and replacing different clamping members, pneumatic valves of different sizes can be clamped, thereby improving the applicability of the structure.

[0025] Optionally, the connecting member is a trapezoidal connecting block, which is arranged on the clamping member and is clamped and mounted on the fixed member or the movable member for positioning.

[0026] By adopting the above technical solution, the connecting block and the fixed part or the movable part are plugged together, making assembly and disassembly extremely convenient. At the same time, the trapezoidal connecting block also improves the stability after connection.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The pneumatic valve is placed on the base and rests against the fixing part for positioning. The positioning mechanism rests against multiple side walls of the pneumatic valve for positioning. The driving assembly drives the movable part close to the pneumatic valve to cooperate with the fixing part to position the pneumatic valve. At the same time, the movable part is also used to connect with the testing machine. The pneumatic valve is started for testing. After the test is completed, the driving part drives the movable part away from the fixing part, and then the pneumatic valve is removed to complete the test of the pneumatic valve, which improves the stability and convenience of the test and improves the test efficiency and effect.

[0028] 2. When the pneumatic valve is unlocked by moving the movable part away from the fixed part, the pushing component drives the two positioning parts to move away from each other, making it easy to remove the pneumatic valve after testing and reinsert the pneumatic valve to be tested. Then, the pushing component unlocks the positioning parts. The two positioning parts approach each other under the action of the elastic part and rest on the pneumatic valve for positioning, which improves the test stability and convenience, thereby improving the test efficiency and effect.

[0029] 3. After being unlocked by the locking piece, the positioning piece drives the push rod and the limit assembly to move back, and the limit assembly rests on the positioning piece for positioning. After the movable piece approaches the fixed piece to position the pneumatic valve, the locking piece locks the push rod, so that the movable piece can lock the two positioning pieces, thereby improving the positioning effect of the pneumatic valve and improving the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the three-dimensional structure of the test device; Figure 2 It is a partial structural diagram of the test device, mainly showing the drive components; Figure 3 It is a partial structural diagram of the test device, mainly showing the connection components and limit components; Figure 4 It is a partial structural diagram of the test device, mainly showing the pushing component to explode one of the locking parts.

[0031] Figure markings: 1. base; 2. clamping mechanism; 21. fixing part; 22. movable part; 23. connecting groove; 24. connecting block; 25. clamping part; 27. sliding hole; 28. moving hole; 29. ​​mounting groove; 3. driving assembly; 31. driving part; 32. pressure detector; 4. positioning mechanism; 41. positioning part; 42. elastic part; 43. fixed block; 5. pushing assembly; 51. pushing rod; 52. locking part; 53. moving part; 54. plug-in part; 6. connecting assembly; 61. connecting block 1; 62. connecting block 2; 63. connecting surface; 7. limiting assembly; 71. limiting block 1; 72. limiting block 2; 73. limiting surface. DETAILED DESCRIPTION

[0032] The following is a further detailed description of this application.

[0033] An embodiment of the present application discloses a testing device for a pneumatic valve.

[0034] Reference Figure 1 The testing device of the pneumatic valve includes a base 1, a positioning mechanism 4 and a clamping mechanism 2 arranged on the base 1. The positioning mechanism 4 is pressed against the two opposite walls of the pneumatic valve for positioning, and the clamping mechanism 2 is used to clamp and position the two opposite walls of the pneumatic valve. At the same time, the positioning mechanism 4 and the clamping mechanism 2 can clamp and position the side walls of the pneumatic valve in four directions at the same time; the pneumatic valve is placed on the base 1, the positioning mechanism 4 is pressed against the two opposite walls of the pneumatic valve for positioning, and then the clamping mechanism 2 is started to clamp and position the other two opposite walls of the pneumatic valve, and the pneumatic valve is connected to the testing machine to realize the testing of the pneumatic valve.

[0035] The clamping mechanism 2 includes a fixed part 21, a movable part 22 and a driving assembly 3. The fixed part 21 is fixedly mounted on the upper surface of the base 1, and the movable part 22 is slidably mounted on the upper surface of the base 1 in a direction close to or away from the fixed part 21; the driving assembly 3 is used to drive the movable part 22 to slide, so that the fixed part 21 and the movable part 22 and the positioning mechanism 4 are cooperated to clamp and position the pneumatic valve, and the side wall of the pneumatic valve in contact with the fixed part 21 and the movable part 22 and the side wall of the pneumatic valve in contact with the positioning mechanism 4 are perpendicular to each other; a test structure can be fixedly installed on the movable part 22 according to the test requirements, and wires connected to the test machine and electronics are fixedly installed on the test structure, so as to realize the testing of various parameters of the pneumatic valve. The test structure is set according to different test requirements and will not be repeated here.

[0036] Reference Figure 1 and Figure 2 The driving assembly 3 includes a driving member 31 and a pressure detector 32. A mounting groove 29 is provided on the side wall of the movable member 22 close to the fixed member 21. The driving member 31 is an electric push rod, etc. The driving member 31 is fixedly mounted on the upper surface of the base 1, and the piston rod of the driving member 31 is fixedly connected to the movable member 22. A control box for controlling the start and stop of the electric push rod is fixedly mounted on the base 1; the pressure detector 32 is fixedly mounted in the mounting groove 29, and the detection element of the pressure detector 32 extends to the outside of the mounting groove 29, and the pressure detector 32 is electrically connected to the control box; when the movable member 22 is pressed against the side wall of the pneumatic valve for positioning, the pressure detector 32 is used to detect pressure. When the pressure reaches the specified value, the control box controls the driving member 31 to stop moving and positions the movable member 22.

[0037] Two positioning mechanisms 4 are provided at intervals, and the positioning mechanisms 4 include positioning members 41, elastic members 42, and a pushing assembly 5. The two positioning members 41 are horizontally slidably mounted on the upper surface of the base 1, and the two positioning members 41 move toward or away from each other. The sliding direction of the positioning members 41 is perpendicular to the sliding direction of the movable member 22. At the same time, the spacing direction between the fixed member 21 and the movable member 22 is perpendicular to the spacing direction of the two positioning members 41. Two fixed blocks 43 are fixedly installed at intervals on the upper surface of the base 1, and the two positioning members 41 are located between the two fixed blocks 43. The elastic members 42 are springs and are provided corresponding to the two positioning members 41. The elastic members 42 are fixedly mounted on the sidewalls on the opposite side of the fixed block 43 and the positioning member 41. The elastic members 42 are used to push the two positioning members 41 to maintain a tendency to move toward each other.

[0038] Reference Figure 1 、 Figure 3The two push assemblies 5 are disposed on the movable member 22 and are respectively connected to the two positioning members 41. The push assemblies 5 are used to push the two positioning members 41 away from each other to facilitate the insertion of the pneumatic valve. The push assemblies 5 include a push rod 51 and a locking member 52. The push rod 51 slides along the sliding direction of the movable member 22 and penetrates the movable member 22. The two push rods 51 are connected to the two positioning members 41 via a connecting assembly 6. The two locking members 52 are used to respectively locate the positions of the two push rods 51.

[0039] Reference Figure 1 、 Figure 4 The movable part 22 is provided with a sliding hole 27 for the push rod 51 to slide, and a moving hole 28 connected to the sliding hole 27 is provided on the upper surface of the movable part 22 in the vertical direction; the locking part 52 includes a moving part 53 and a plug-in part 54, the moving part 53 is an electric push rod, the moving part 53 is fixedly mounted on the upper surface of the movable part 22, and the piston rod of the moving part 53 extends vertically downward into the moving hole 28, the plug-in part 54 is slidably mounted on the moving hole 28 and fixedly mounted on the piston rod of the moving part 53; the moving part 53 drives the plug-in part 54 to be plugged into the push rod 51 for positioning, so as to unlock and lock the push rod 51.

[0040] Both push rods 51 are provided with a limiting assembly 7 for limiting the two positioning members 41. When the movable member 22 is pressed against the pneumatic valve for positioning, the limiting assembly 7 is pressed against the two positioning members 41 for locking and is used to prevent the two positioning members 41 from moving away from each other. When the movable member 22 moves away from the pneumatic valve for unlocking, it drives the two limiting assemblies 7 to move away from the two positioning members 41 for unlocking.

[0041] Reference Figure 1 、 Figure 3 The connecting assembly 6 includes a connecting block 1 61 and a connecting block 2 62. The connecting block 1 61 is fixedly mounted on the side wall of the positioning member 41 close to the push rod 51, and the connecting block 2 62 is fixedly mounted on the end of the push rod 51 close to the positioning member 41. The connecting block 2 62 is located on the side of the connecting block 1 61 away from the fixed block 43, that is, the two connecting blocks 2 62 are located between the two connecting blocks 1 61. Connecting surfaces 63 that fit together and are inclined are provided on the connecting block 1 61 and the connecting block 2 62. The pushing rod 51 moves away from the positioning member 41 to drive the connecting block 2 62 away from the positioning member 41. The connecting block 2 62 pushes the connecting block 1 61 and the positioning member 41 to move through the connecting surface 63, thereby realizing that the two positioning members 41 move away from each other.

[0042] The limit assembly 7 includes a limit block 1 71 and a limit block 2 72. The limit block 1 71 is fixedly mounted on the side wall of the positioning member 41 close to the push rod 51, and the limit block 1 71 is located on the side of the connecting block 1 61 close to the fixed block 43, that is, the two connecting blocks 1 61 are located between the two limit blocks 1 71; the limit block 2 72 is fixedly mounted on the end of the pushing rod 51 close to the positioning member 41, and the limit block 2 72 is located on the side of the limit block 1 71 away from the connecting block 1 61, that is, the two limit blocks 1 71 are located between the two limit blocks 2 72, and the limit blocks 1 71 and the limit blocks 2 72 are provided with limit surfaces 73 that fit together and are inclined, and the limit surfaces 73 and the connecting surface 63 are parallel to each other; the movable member 22 positions the pushing rod 51 and the connecting block 2 62, and the connecting block 2 62 positions the connecting block 1 61 and the positioning member 41 through the connecting surface 63, thereby being able to position the two positioning members 41.

[0043] Reference Figure 1-Figure 3 , the driving member 31 drives the movable member 22 away from the fixed member 21, and the movable member 22 moves and drives the pushing rod 51 away from the fixed member 21 and the positioning member 41 at the same time. The pushing rod 51 drives the connecting block 2 62 and the connecting block 1 61 to move, pushing the two positioning members 41 away from the pneumatic valve, so that the fixed member 21 and the movable member 22, and the two positioning members 41 all unlock the pneumatic valve. Then, after the pneumatic valve to be tested is removed and the pneumatic valve to be tested is placed, the locking member 52 is unlocked, and the two positioning members 41 move back under the action of the elastic member 42 and press against the pneumatic valve for positioning. The positioning member 41 moves back to drive the connecting block 2 62 and the limit block 2 72, and the pushing rod 51 moves back. Then the movable member 22 moves back so that the movable member 22 and the fixed member 21 press against the pneumatic valve for positioning. The locking member 52 positions the pushing rod 51, so that the two positioning members 41 can be positioned, thereby improving the test efficiency and effect.

[0044] Reference Figure 1 、 Figure 4 Clamping parts 25 are detachably mounted on the opposite side walls of the fixed part 21 and the movable part 22 and on the opposite side walls of the two positioning parts 41 through connecting parts. The four clamping parts 25 cooperate to clamp and position the pneumatic valve, so that the clamping parts 25 that are adapted to the size and or shape of the pneumatic valve can be replaced as needed, thereby improving the testing efficiency and effect of different pneumatic valves.

[0045] The following is an explanation of the connecting piece located at the fixing piece 21. A connecting groove 23 connected to the top of the fixing piece 21 is provided on the side wall of the fixing piece 21 close to the positioning piece 41, and the vertical projection of the connecting groove 23 is trapezoidal; the connecting piece is a trapezoidal connecting block 24, which is fixedly installed on the side wall of the clamping piece 25 close to the fixing piece 21. The connecting block 24 is inserted into the connecting groove 23 from top to bottom for positioning, thereby realizing the installation of the clamping piece 25.

[0046] The working principle of the embodiment of this application is as follows: The driving member 31 drives the movable member 22 away from the fixed member 21, and the movable member 22 moves to drive the two positioning members 41 away from the pneumatic valve, so that the fixed member 21 and the movable member 22, and the two positioning members 41 all unlock the pneumatic valve, and then the pneumatic valve after the test is removed and the pneumatic valve to be tested is placed, so that the pneumatic valve is pressed against the fixed member 21 for positioning; the locking member 52 is unlocked, and the two positioning members 41 move back and press against the pneumatic valve for positioning, and the positioning member 41 moves back to drive the connecting block 2 62 and the limit block 2 72, and the push rod 51 to move back, and then the movable member 22 moves back to position on the pneumatic valve, and the locking member 52 positions the push rod 51, so that the two positioning members 41 can be positioned, thereby improving the test efficiency and effect.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pneumatic valve testing device, characterized in that: The invention comprises a base (1), a positioning mechanism (4) and a clamping mechanism (2) arranged on the base (1), wherein the positioning mechanism (4) abuts against multiple side walls of the pneumatic valve for positioning, and the clamping mechanism (2) comprises: A fixing member (21) is provided on the base (1); A movable part (22) is slidably disposed on the base (1) in a direction approaching or moving away from the fixed part (21) and is used to connect to the testing machine; The driving assembly (3) is used to drive the movable part (22) to slide, so that the fixed part (21) and the movable part (22) abut against multiple side walls of the pneumatic valve and cooperate with the positioning mechanism (4) to position the pneumatic valve and achieve connection with the testing machine.

2. A pneumatic valve testing device according to claim 1, characterized in that: The positioning mechanism (4) comprises: Two positioning members (41) are slidably disposed on the base (1) toward each other; Two elastic members (42) are provided on the base (1) and are respectively connected to the two positioning members (41) and are used to push the two positioning members (41) against opposite side walls of the pneumatic valve for positioning; Two pushing assemblies (5) are arranged on the movable member (22) and are used to push the two positioning members (41) away from each other and facilitate the insertion of the pneumatic valve.

3. A pneumatic valve testing device according to claim 2, characterized in that: The pushing component (5) comprises: A push rod (51) is slidably disposed on the movable member (22) along the sliding direction of the movable member (22) and is connected to the positioning member (41) via a connecting assembly (6); The locking member (52) is used to position the push rod (51) and the movable member (22). The movable member (22) moves to drive the push rod (51) to move simultaneously. The two push rods (51) move to drive the two positioning members (41) to move away from each other through the connecting assembly (6). When the positioning members (41) need to be unlocked, the locking member (52) unlocks the push rod (51) and allows the two positioning members (41) to move closer to each other under the action of the elastic member (42).

4. A pneumatic valve testing device according to claim 3, characterized in that: The connecting component (6) comprises: The first connecting block (61) and the second connecting block (62) are arranged on the positioning member (41) and the push rod (51) and are provided with connecting surfaces (63) that are in contact with each other and are in an inclined state. When the movable member (22) moves away from the fixed member (21), the push rod (51) is driven to move and the two positioning members (41) are driven away from each other through the connecting surface (63).

5. The pneumatic valve testing device according to claim 3, characterized in that: The locking member (52) comprises: A moving member (53) is provided on the movable member (22); The plug-in connector (54) is arranged on the piston rod of the moving member (53), and the moving member (53) drives the plug-in connector (54) to be plugged and installed on the push rod (51) for locking.

6. The pneumatic valve testing device according to claim 3, characterized in that: The two push rods (51) are both provided with a limiting assembly (7) for limiting the positioning member (41). When the movable member (22) is pressed against the pneumatic valve for positioning, the limiting assembly (7) is pressed against the two positioning members (41) for locking and is used to prevent the two positioning members (41) from moving away from each other. When the movable member (22) moves away from the pneumatic valve for unlocking, it drives the two limiting assemblies (7) to move away from the two positioning members (41) for unlocking.

7. A pneumatic valve testing device according to claim 6, characterized in that: The limiting component (7) includes: A limit block 1 (71), provided on the positioning member (41); The second limiting block (72) is arranged on the push rod (51), and both the first limiting block (71) and the second limiting block (72) are provided with limiting surfaces (73) that can be attached to each other and in an inclined state and are used to position the first limiting block (71).

8. The pneumatic valve testing device according to claim 1, characterized in that: The driving assembly (3) comprises: A driving member (31) for driving the movable member (22) to move; A pressure detector (32) is provided on the movable member (22) and is used to detect the pressure of the pneumatic valve on the movable member (22) and is electrically connected to the driving member (31).

9. The pneumatic valve testing device according to claim 1, characterized in that: Clamping members (25) are detachably provided on opposite side walls of the fixed member (21) and the movable member (22) via connecting members, and the clamping members (25) are used to clamp and position the pneumatic valve.

10. The pneumatic valve testing device according to claim 9, characterized in that: The connecting piece is a trapezoidal connecting block (24), which is arranged on the clamping piece (25) and is mounted on the fixed piece (21) or the movable piece (22) for positioning.

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