Electromagnetic valve air tightness detection tool

Abstract

The application discloses a kind of electromagnetic valve air tightness detection tool, it is related to electromagnetic valve detection field, it is difficult to solve the problem that the pressure pipe of detection is connected with butt joint port when the air tightness of existing electromagnetic valve is detected, including: processing table and electromagnetic valve body, the top of processing table is provided with first pipeline and second pipeline, the outer side of first pipeline and second pipeline is fixedly installed with positioning sleeve frame, the inner side of processing table is rotatably installed with opposite screw rod, the both ends of opposite screw rod are threadedly assembled with moving block, two moving blocks are connected with two positioning sleeve frames by two slide bars;It further includes: butt joint mechanism, for making the both ends of electromagnetic valve body butt joint port and first pipeline and second pipeline quickly butt joint, butt joint mechanism is installed on the top of processing table;The application is automatically righted to two butt joint ports on electromagnetic valve body by butt joint mechanism, so that two butt joint ports on electromagnetic valve body are respectively connected with first pipeline and second pipeline, to improve detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of solenoid valve testing, specifically to a solenoid valve airtightness testing fixture. Background Technology

[0002] A solenoid valve is a device that controls the flow of fluid through an electromagnetic system. It is widely used in industrial automation, fluid control and other fields. It is mainly used to adjust the direction, flow rate, speed and other parameters of the medium. It can be used with different circuits to achieve precise and flexible control.

[0003] To ensure that solenoid valves can reliably control the on / off or flow direction of fluids (gas or liquid) during operation, air tightness testing is an indispensable part of the production, installation, and maintenance of solenoid valves. By introducing gas at a certain pressure into the air inlet of the solenoid valve, it is observed whether there is gas leakage at the outlet of the solenoid valve. In the current solenoid valve air tightness testing, it is necessary to manually hold the solenoid valve and assemble the test pressure tube. In order to ensure the sealing of the docking port, the manual docking process is very strict, resulting in a long docking time, which ultimately extends the timeliness of the air tightness test for each solenoid valve. Summary of the Invention

[0004] The purpose of this invention is to provide a solenoid valve airtightness testing fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A solenoid valve airtightness testing fixture includes: a processing table and a solenoid valve body disposed on the top of the processing table. A first pipe and a second pipe are disposed on the top of the processing table. Positioning sleeves are fixedly installed on the outer sides of both the first and second pipes. A counter-rotating screw is rotatably installed on the inner side of the processing table. Moving blocks are threaded onto both ends of the counter-rotating screw. The moving blocks are slidably installed on the inner side of the processing table. Both moving blocks are fixedly connected to two positioning sleeves via two sliding rods. Two optical axes that symmetrically slide through the moving blocks are fixedly installed on the inner side of the processing table. The fixture also includes: a docking mechanism for quickly docking the docking ports at both ends of the solenoid valve body with the first and second pipes; the docking mechanism is installed on the top of the processing table; a testing mechanism for airtightness testing of the solenoid valve body; the testing mechanism is installed on the outer sides of the first and second pipes; and a sealing mechanism for sealing and protecting the first and second pipes; the sealing mechanism is installed on the inner sides of the first and second pipes.

[0007] Preferably, the docking mechanism includes two symmetrically arranged inserts on both sides of the solenoid valve body. The two inserts are slidably installed on the inner sides of the first pipe and the second pipe, respectively. Two symmetrically distributed mounting plates are fixedly installed on both sides of the first pipe and the second pipe. A mounting rod is rotatably installed between two adjacent mounting plates. A support arm is fixedly installed on the outer side of the mounting rod. An arc-shaped clamp is fixedly installed on the end of the support arm away from the mounting rod. A gear is fixedly installed on the end of the support arm near the mounting rod. Two symmetrically distributed sliding plates are fixedly installed on the end of the insert near the solenoid valve body. A rack that meshes with the gear is provided on the outer side of the sliding plate. A plurality of centrally symmetrically distributed positioning slide rods are fixedly installed on the end of the insert near the sliding plate. A sleeve for limiting the sliding of the positioning slide rods is fixedly installed on the outer side of both the first pipe and the second pipe. A first spring is fixedly installed between the sleeve and the insert.

[0008] Preferably, the detection mechanism includes an air inlet pipe fixedly installed at the top of the first pipe, a vent plate fixedly installed on the inner side of the air inlet pipe, a plurality of vent holes centrally symmetrically distributed on the surface of the vent plate, a second spring fixedly installed at the bottom of the vent plate, a sealing ball fixedly installed at the end of the second spring away from the vent plate, a sealing plate fixedly installed on the inner side of the air inlet pipe, an air inlet hole for the sealing ball to be inserted into the sealing plate, the inner diameter of the air inlet hole being smaller than the outer diameter of the sealing ball, a guide rod sliding through the vent plate fixedly installed at the top of the sealing ball, a first silicone rubber membrane fixedly installed at the end of the air inlet pipe away from the first pipe, and a second silicone rubber membrane fixedly installed at the end of the second pipe away from the solenoid valve body.

[0009] Preferably, the sealing mechanism includes a positioning plate fixedly installed on the end of the insert away from the slide plate. A turntable is provided on the side of the positioning plate away from the insert. The surfaces of the turntable and the positioning plate are each provided with four centrally symmetrically distributed exhaust holes. A rotating ring is fixedly installed on the side of the turntable near the positioning plate. The rotating ring is rotatably installed on the end of the insert near the positioning plate. A plurality of centrally symmetrically distributed spiral strips are fixedly installed on the outer side of the turntable. The inner sides of the first pipe and the second pipe are each provided with spiral grooves that cooperate with the spiral strips.

[0010] Preferably, both ends of the counter-rotating screw extend to the outside of the processing table, and both ends of the counter-rotating screw are fixedly equipped with handwheels.

[0011] Preferably, a first rubber ring is fixedly installed at the end of both the first pipe and the second pipe near the solenoid valve body, and a second rubber ring is fixedly installed at the end of the insert near the solenoid valve body.

[0012] Preferably, two symmetrically distributed threaded cylinders are fixedly installed on the outer side of the arc-shaped clamp, and an adjusting screw is threaded on the inner side of the threaded cylinder. A pressure ball is fixedly installed on the end of the adjusting screw near the insert cylinder.

[0013] Preferably, two symmetrically distributed T-shaped sliding rods are fixedly installed on both sides of the first pipe and the second pipe, and a long groove is provided on the outer side of the sliding plate for the T-shaped sliding rods to be limited and slid.

[0014] Preferably, a flow guide is fixedly installed at the bottom of the air intake pipe, and the flow guide has an arc-shaped structure.

[0015] Preferably, a baffle is fixedly installed on the side of the turntable away from the positioning plate, and the inner sides of the first pipe and the second pipe are in contact with the outer side of the baffle.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention uses a docking mechanism to drive two moving blocks closer together via a counter-rotating screw. The two moving blocks can then move the first and second pipes synchronously via a positioning sleeve, and automatically align the two docking ports on the solenoid valve body, so that the two docking ports on the solenoid valve body are respectively docked with the first and second pipes, thereby improving detection efficiency.

[0018] This invention uses a detection mechanism to supply air into the first pipeline. When the solenoid valve body is in a sealed state, the generated air pressure can push the sealing ball in the air inlet pipe off the sealing disc, causing the first silicone rubber diaphragm to deform. This indicates that the sealing performance inside the solenoid valve body is good. When the second silicone rubber diaphragm on the second pipeline deforms, it indicates that the sealing performance inside the solenoid valve body is poor, thus achieving a rapid detection effect.

[0019] This invention, through a sealing mechanism, enables the insert to push the spiral strip on the turntable to move along the spiral groove on the first or second pipe after the insert is connected to the port of the solenoid valve body. This rotation of the turntable aligns the exhaust hole of the turntable with the exhaust hole on the positioning plate, thereby opening the first and second pipes and achieving automatic opening and sealing. This improves the convenience of continuous detection of the solenoid valve body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the moving block and positioning sleeve structure in this invention;

[0022] Figure 3This is a schematic diagram of the insert and positioning slide bar structure in this invention;

[0023] Figure 4 for Figure 3 Enlarged structural diagram of area A in the middle;

[0024] Figure 5 This is a schematic diagram of the arc-shaped clamp and support arm structure in this invention;

[0025] Figure 6 This is a schematic diagram of the intake pipe and the first silicone rubber membrane structure in this invention;

[0026] Figure 7 This is a schematic diagram of the sealing cap and sealing disc structure in this invention;

[0027] Figure 8 This is a schematic diagram of the positioning disk and turntable structure in this invention.

[0028] In the diagram: 1. Processing table; 2. Solenoid valve body; 3. First pipe; 4. Second pipe; 5. Positioning sleeve; 6. Reverse screw; 7. Moving block; 8. Optical axis; 9. Insert; 10. Mounting plate; 11. Baffle; 12. Mounting rod; 13. Support arm; 14. Arc-shaped clamp; 15. Gear; 16. Slide plate; 17. Positioning slide rod; 18. Sleeve seat; 19. First spring; 20. Air inlet pipe; 21. Vent plate; 22. Second spring; 23. Sealing ball; 24. Sealing plate; 25. Guide rod; 26. First silicone rubber membrane; 27. Second silicone rubber membrane; 28. Positioning plate; 29. ​​Turntable; 30. Rotary ring; 31. Spiral strip; 32. Handwheel; 33. First rubber ring; 34. Second rubber ring; 35. Threaded cylinder; 36. Adjusting screw; 37. Pressure ball; 38. T-shaped slide rod; 39. Flow guide. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-8The diagram shows a solenoid valve airtightness testing fixture, comprising a processing table 1 and a solenoid valve body 2 mounted on top of the processing table 1. A first pipe 3 and a second pipe 4 are mounted on the top of the processing table 1. Positioning sleeves 5 are fixedly installed on the outer sides of both the first pipe 3 and the second pipe 4. A counter-rotating screw 6 is rotatably mounted on the inner side of the processing table 1. Moving blocks 7 are threaded onto both ends of the counter-rotating screw 6. The moving blocks 7 are slidably mounted on the inner side of the processing table 1. Both moving blocks 7 are fixedly connected to the two positioning sleeves 5 via two sliding rods. Two symmetrically sliding optical axes 8 are fixedly mounted on the inner side of the processing table 1, passing through the moving blocks 7. When the counter-rotating screw 6 rotates, it can drive the two moving blocks 7 to move along the optical axes 8 and the inner side of the processing table 1. The two moving blocks 7 respectively... The first pipe 3 and the second pipe 4 are moved synchronously by the corresponding positioning sleeve 5, so that the first pipe 3 and the second pipe 4 are close to the two docking ports of the solenoid valve body 2. Both ends of the counter-rotating screw 6 extend to the outside of the processing table 1, and handwheels 32 are fixedly installed at both ends of the counter-rotating screw 6. The system also includes: a docking mechanism for quickly docking the docking ports of the two ends of the solenoid valve body 2 with the first pipe 3 and the second pipe 4, and the docking mechanism is installed on the top of the processing table 1; a detection mechanism for detecting the airtightness of the solenoid valve body 2, and the detection mechanism is installed on the outside of the first pipe 3 and the second pipe 4; and a sealing mechanism for sealing and protecting the first pipe 3 and the second pipe 4, and the sealing mechanism is installed on the inside of the first pipe 3 and the second pipe 4.

[0031] The docking mechanism includes two symmetrically arranged inserts 9 on both sides of the solenoid valve body 2. The two inserts 9 are slidably mounted on the inner sides of the first pipe 3 and the second pipe 4, respectively. This allows the corresponding inserts 9 to move synchronously when the first pipe 3 and the second pipe 4 move. When the inserts 9 contact the docking ports of the solenoid valve body 2, the two inserts 9 can move along the inner sides of the first pipe 3 and the second pipe 4 as the first pipe 3 and the second pipe 4 move. A first rubber ring 33 is fixedly installed at the end of the first pipe 3 and the second pipe 4 closest to the solenoid valve body 2 to improve the tightness between the inserts 9 and the first pipe 3 and the second pipe 4. For sealing, a second rubber ring 34 is fixedly installed at one end of the insert 9 near the solenoid valve body 2 to improve the sealing performance of the insert 9 after contact with the solenoid valve body 2. Two symmetrically distributed mounting plates 10 are fixedly installed on both sides of the first pipe 3 and the second pipe 4. A mounting rod 12 is rotatably installed between two adjacent mounting plates 10. A support arm 13 is fixedly installed on the outer side of the mounting rod 12. An arc-shaped clamping plate 14 is fixedly installed at the end of the support arm 13 away from the mounting rod 12. Two symmetrically distributed threaded cylinders 35 are fixedly installed on the outer side of the arc-shaped clamping plate 14. An adjusting screw 36 is threaded on the inner side of the threaded cylinder 35. The adjusting screw 36 is close to... A pressure ball 37 is fixedly installed at one end of the insert 9, allowing the arc-shaped clamp 14 to contact the outer side of the docking port of the solenoid valve body 2 through the pressure ball 37. A gear 15 is fixedly installed at the end of the support arm 13 near the mounting rod 12. Two symmetrically distributed sliding plates 16 are fixedly installed at the end of the insert 9 near the solenoid valve body 2, enabling the insert 9 to drive the sliding plates 16 to move synchronously. Two symmetrically distributed T-shaped sliding rods 38 are fixedly installed on both sides of the first pipe 3 and the second pipe 4. The outer side of the sliding plate 16 has a long groove for the T-shaped sliding rods 38 to limit their sliding, improving the stability of the sliding plate 16's movement. The outer side of the sliding plate 16 has a groove that matches the gear 15. The rack and pinion mechanism allows the slide plate 16 to move, driving the gear 15 to rotate. The gear 15, in turn, drives the arc-shaped clamp 14 to contact the outer side of the docking port via the support arm 13, aligning the docking port with the insertion cylinder 9. Multiple centrally symmetrically distributed positioning slide rods 17 are fixedly installed on one end of the insertion cylinder 9 near the slide plate 16. Sleeves 18 for limiting the sliding of the positioning slide rods 17 are fixedly installed on the outer sides of the first pipe 3 and the second pipe 4. A first spring 19 is fixedly installed between the sleeve 18 and the insertion cylinder 9. The rebound force of the first spring 19 can be used to reset the insertion cylinder 9 when the first pipe 3 and the second pipe 4 are away from the docking port.

[0032] Example 2: Please refer to Figures 2-7This embodiment further illustrates Example 1. The detection mechanism shown in the figure includes an air inlet pipe 20 fixedly installed at the top of the first pipe 3. A vent plate 21 is fixedly installed on the inner side of the air inlet pipe 20. The surface of the vent plate 21 has multiple vent holes distributed symmetrically in a central manner. A second spring 22 is fixedly installed at the bottom of the vent plate 21. A sealing ball 23 is fixedly installed at the end of the second spring 22 away from the vent plate 21. A sealing plate 24 is fixedly installed on the inner side of the air inlet pipe 20. The surface of the sealing plate 24 has an air inlet hole for the sealing ball 23 to be inserted and limited. The inner diameter of the air inlet hole is smaller than the outer diameter of the sealing ball 23. When the inside of the solenoid valve body 2 is sealed, with the injection of air, the air pressure in the first pipe 3 can push the sealing ball 23 open, allowing air to enter the air inlet pipe 20 and seal it. A guide rod 25 that slides through the vent plate 21 is fixedly installed on the top of the ball 23 to improve the stability of the movement of the sealing ball 23. A first silicone rubber membrane 26 is fixedly installed at the end of the air inlet pipe 20 away from the first pipe 3. The air in the air inlet pipe 20 can push the first silicone rubber membrane 26, causing the first silicone rubber membrane 26 to deform. This is easy for the staff to observe, and it can be concluded that the sealing performance of the solenoid valve body 2 is good. A second silicone rubber membrane 27 is fixedly installed at the end of the second pipe 4 away from the solenoid valve body 2. When air passes through the solenoid valve body 2 and enters the second pipe 4, it can cause the second silicone rubber membrane 27 to deform, and it can be concluded that the sealing performance of the solenoid valve body 2 is poor. A flow guide shroud 39 is fixedly installed at the bottom of the air inlet pipe 20. The flow guide shroud 39 has an arc-shaped structure to facilitate the entry of air into the air inlet pipe 20.

[0033] Example 3: Please refer to Figures 2-8 This embodiment further illustrates other embodiments. The sealing mechanism shown in the figure includes a positioning plate 28 fixedly installed on the end of the insert 9 away from the slide plate 16. A turntable 29 is provided on the side of the positioning plate 28 away from the insert 9. The surfaces of both the turntable 29 and the positioning plate 28 are provided with four centrally symmetrically distributed exhaust holes. When the positioning plate 28 on the turntable 29 is misaligned, the first pipe 3 and the second pipe 4 can be sealed through the turntable 29 and the positioning plate 28. A rotating ring 30 is fixedly installed on the side of the turntable 29 near the positioning plate 28. The rotating ring 30 is rotatably installed on the end of the insert 9 near the positioning plate 28. Multiple [unclear text - possibly related to the sealing mechanism] are fixedly installed on the outer side of the turntable 29. A spiral strip 31 is centrally symmetrically distributed. The inner sides of the first pipe 3 and the second pipe 4 are provided with spiral grooves that cooperate with the spiral strip 31. When the insert 9 drives the turntable 29 to move through the rotating ring 30, it can drive the spiral strip 31 on the turntable 29 to move along the inner side of the spiral groove, thereby realizing the rotation of the turntable 29. This aligns the exhaust hole on the turntable 29 with the exhaust hole on the positioning plate 28, opening the first pipe 3 and the second pipe 4. A baffle 11 is fixedly installed on the side of the turntable 29 away from the positioning plate 28. The inner sides of the first pipe 3 and the second pipe 4 are in contact with the outer side of the baffle 11, providing a shield for the spiral groove and preventing air from entering the spiral groove.

[0034] Working principle: First, the operator holds the handwheel 32 and rotates the counter-rotating screw 6. The counter-rotating screw 6 drives two moving blocks 7 to move along the optical axis 8 and the inner side of the processing table 1. The two moving blocks 7 drive the first pipe 3 and the second pipe 4 to move synchronously through the corresponding positioning sleeves 5, so that the first pipe 3 and the second pipe 4 are close to the two docking ports of the solenoid valve body 2. The inserts 9 on the first pipe 3 and the second pipe 4 are in contact with the two docking ports of the solenoid valve body 2. As the first pipe 3 and the second pipe 4 move, the reaction force of the docking ports on the inserts 9 pushes the two... The insert 9 moves along the inner sides of the first pipe 3 and the second pipe 4 respectively. The insert 9 drives the two sliding plates 16 to move synchronously, causing the rack on the outer side of the sliding plate 16 to drive the gear 15 to rotate. The gear 15 drives the support arm 13 to swing around the mounting rod 12 as the fulcrum. The support arm 13 can then drive the arc-shaped clamp 14 to come close to the outer side of the docking port, so that the two pressure balls 37 on the two arc-shaped clamps 14 simultaneously contact the outer side of the docking port, aligning the docking port with the insert 9. At the same time, the insert 9 drives the positioning plate 28 and the turntable 29 to move synchronously, so that the spiral strip 31 on the turntable 29 moves along the first pipe 3 and the second pipe 4. The spiral groove inside the second pipe 4 moves, causing the turntable 29 to rotate along the outer side of the positioning plate 28. When the insert 9 stops moving, the exhaust hole on the turntable 29 aligns with the exhaust hole on the positioning plate 28, opening the first pipe 3 and the second pipe 4. Then, the operator injects air into the first pipe 3. The air passes through the exhaust hole and the insert 9 into the docking port on the left side of the solenoid valve body 2. When the sealing inside the solenoid valve body 2 is good, as the air pressure inside the first pipe 3 increases, air enters the air inlet pipe 20, pushing the sealing ball 23 upward and away from the sealing plate 24, thus sealing the valve. When the air inlet of the disc 24 is open, air can pass through the vent on the vent disc 21 and push the first silicone rubber diaphragm 26, causing the first silicone rubber diaphragm 26 to deform under pressure. The operator can then determine that the solenoid valve body 2 has good sealing performance. When the sealing performance of the solenoid valve body 2 is poor, air inside the solenoid valve body 2 can enter the second pipe 4, causing the second silicone rubber diaphragm 27 on the second pipe 4 to deform. The operator can then determine that the solenoid valve body 2 has poor sealing performance, thereby achieving the effect of rapid detection, improving the detection efficiency of the solenoid valve body 2, and facilitating continuous detection of multiple solenoid valve bodies 2.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic valve air tightness detection tool, characterized in that, The utility model relates to a processing platform and electromagnetic valve body, the top of processing platform is provided with first pipeline and second pipeline, the outside of first pipeline and second pipeline all is fixedly installed with positioning sleeve frame, the inside of processing platform rotatably installs hetero direction screw rod, both ends of hetero direction screw rod all are threadedly assembled with moving block, two moving blocks all are through two slide bars and two positioning sleeve frames butt joint, Butt joint mechanism is used for butt joint port of both ends of electromagnetic valve body and first pipeline and second pipeline quick butt joint, butt joint mechanism installs in the top of processing platform, butt joint mechanism includes two setting in the both sides of electromagnetic valve body's insert sleeve, two insert sleeves are slidably installed in the inside of first pipeline and second pipeline respectively, Detection mechanism is used for the air tightness detection of electromagnetic valve body, and the detection mechanism is installed on the outside of the first pipeline and the second pipeline. The detection mechanism includes an air inlet pipe installed on the top of the first pipeline. The air inlet pipe is internally provided with an air permeable disc. The air permeable disc is provided with a plurality of air permeable holes on the surface. The bottom of the air permeable disc is fixedly installed with a second spring. One end of the second spring is fixedly installed with a sealing ball. The inside of the air inlet pipe is fixedly installed with a sealing disc. The surface of the sealing disc is provided with an air inlet hole for limiting the insertion of the sealing ball. The inner diameter of the air inlet hole is smaller than the outer diameter of the sealing ball. The top of the sealing ball is provided with a guide rod which slidably penetrates the air permeable disc. One end of the air inlet pipe is fixedly installed with a first silicone rubber film. One end of the second pipeline is fixedly installed with a second silicone rubber film. The sealing mechanism is used for sealing and protecting the first pipeline and the second pipeline. The sealing mechanism is installed on the inside of the first pipeline and the second pipeline. The sealing mechanism includes a positioning disc fixedly installed on one end of the insert sleeve. One side of the positioning disc is provided with a rotating disc. The surface of the rotating disc and the positioning disc is provided with four exhaust holes. One side of the rotating disc is fixedly installed with a rotating ring rotatably installed on one end of the insert sleeve. The outside of the rotating disc is installed with a plurality of helical strips symmetrically distributed. The inside of the first pipeline and the second pipeline is provided with a helical groove matched with the helical strip. One side of the rotating disc away from the positioning disc is fixedly installed with a blocking cylinder. Both sides of the first pipeline and the second pipeline are fixedly installed with two mounting plates. Adjacent two mounting plates are rotatably installed with a mounting rod. The outside of the mounting rod is installed with a support arm. One end of the support arm is fixedly installed with an arc-shaped clamping plate. The other end of the support arm is fixedly installed with a gear. One end of the insert sleeve is fixedly installed with two symmetrically distributed sliding plates and a plurality of positioning slide rods. The outside of the sliding plate is provided with a gear rack matched with the gear. The outside of the first pipeline and the second pipeline is fixedly installed with a sleeve seat for limiting the sliding of the positioning slide rod. The sleeve seat and the insert sleeve are fixedly installed with a first spring.

2. The electromagnetic valve air tightness detection tool according to claim 1, characterized in that: Both ends of the hetero direction screw rod are fixedly installed with a hand wheel.

3. The electromagnetic valve air tightness detection tool according to claim 1, characterized in that: One end of the first pipeline and the second pipeline is installed with a first rubber ring. One end of the insert sleeve is installed with a second rubber ring.

4. The electromagnetic valve air tightness detection tool according to claim 1, characterized in that: The outside of the arc-shaped clamping plate is installed with two threaded cylinders. The inside of the threaded cylinder is threadedly assembled with an adjusting screw rod. One end of the adjusting screw rod is fixedly installed with a pressing ball.

5. The electromagnetic valve air tightness detection tool of claim 2, wherein: Both sides of the first pipeline and the second pipeline are fixedly installed with two T-shaped slide rods. The outside of the sliding plate is provided with a long slot for limiting the sliding of the T-shaped slide rod.

6. The electromagnetic valve air tightness detection tool of claim 2, wherein: The bottom of the air inlet pipe is installed with a flow guide cover in a circular arc structure.

7. The electromagnetic valve air tightness detection tool according to claim 1, characterized in that: ​

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