Testing tool of vacuum valve

Abstract

The invention discloses a test tool for a vacuum valve, and relates to the technical field of valve testing, the test tool comprises a detection gas circuit device, the detection gas circuit device comprises a gas supply unit, the gas supply unit is connected with a plurality of detection gas circuit devices through pipelines, and each detection gas circuit device comprises a gas supply mechanism, a positioning mechanism and a vacuum mechanism. One end of the positioning mechanism is fixedly connected with the air supply mechanism, the other end of the positioning mechanism is fixedly connected with the vacuum mechanism, and the air supply mechanism, the positioning mechanism and the vacuum mechanism are communicated with one another through pipelines. According to the invention, the air pipe and the to-be-tested valve are rapidly connected, so that the detection efficiency of the vacuum valve is improved, parallel testing is realized through multiple detection air path devices, accurate alignment of the air pipe and the to-be-tested valve is ensured, the sealing performance is improved, rapid blanking and data analysis are supported, and the test process and the equipment performance are optimized.

Description

Technical Field

[0001] The invention relates to the technical field of valve testing, and in particular to a testing tool for a vacuum valve. Background Art

[0002] In a vacuum system, valves are needed to control the flow of gas, to control flow, adjust pressure or isolate, and thus realize the control and operation of the system. During the design process, R&D personnel continuously modify the structure and parameters of the valve, and then install the designed valve on the test platform for running-in test to detect whether its related parameters meet the working requirements, such as the valve's sealing, opening speed, response speed, etc.

[0003] In addition to conventional long-tube vacuum valves, vacuum valves on the market also have vacuum valves with various angles, such as right-angle vacuum valves, acute-angle vacuum valves and obtuse-angle vacuum valves. However, the vacuum valve testing tooling in the prior art has certain singleness and limitations and cannot be applied to the testing of vacuum valves at various angles. Therefore, corresponding improvements should be made according to the existing situation to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum valve testing tool to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A test fixture for a vacuum valve, comprising a detection gas circuit device, the detection gas circuit device comprising a gas supply unit, the gas supply unit being connected to a plurality of detection gas circuit devices via a pipeline, the detection gas circuit device comprising a gas supply mechanism, a positioning mechanism and a vacuum mechanism, one end of the positioning mechanism being fixedly connected to the gas supply mechanism, and the other end being fixedly connected to the vacuum mechanism, the gas supply mechanism, the positioning mechanism and the vacuum mechanism being interconnected via a pipeline; The positioning mechanism includes a base, a first right-angle seat is fixedly installed on the top of the base, a second right-angle seat is rotatably connected to the bottom of the first right-angle seat, a first motor for driving the second right-angle seat to rotate is fixedly installed on the bottom of the base, a first lifting platform is fixedly connected to the first right-angle seat and the second right-angle seat, an adjustment component is fixedly connected to the first lifting platform, an auxiliary unloading component is fixedly installed on the side wall of the adjustment component, a power supply component is fixedly installed on the second right-angle seat, air pipes are fixedly installed on the side walls of the first right-angle seat and the second right-angle seat, a docking component is slidably installed in the air pipe, and the two docking components cooperate with each other to connect the valve to be tested with the air pipes at both ends.

[0006] A further improvement of the technical solution of the present invention is that the air supply unit comprises an air compressor, the air compressor is externally connected to a CDA main pipeline, and the end of the CDA main pipeline away from the air compressor is fixedly connected to a first filter.

[0007] A further improvement of the technical solution of the present invention is that the adjustment component includes a two-way telescopic box fixedly installed on the top of the first lifting platform, the output end of one end of the two-way telescopic box is fixedly connected to the first baffle, and the output end of the other two-way telescopic box is rotatably installed with a second baffle connected to the auxiliary unloading component, and when the valve body to be tested is unloaded, the second baffle can be rotated to tilt downward through the auxiliary unloading component.

[0008] A further improvement of the technical solution of the present invention is that the auxiliary unloading component includes a first cylinder fixedly mounted on the side wall of the first baffle, the output end of the first cylinder passes through the first baffle and is fixedly connected to a push plate, the side wall of one of the output ends of the two-way telescopic box is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to the second baffle.

[0009] A further improvement of the technical solution of the present invention is that the docking assembly includes a sliding tube sleeved in the air pipe, the outer wall of the sliding tube is fixedly connected with a plurality of protrusions along the circumferential direction of the sliding tube, the plurality of protrusions are commonly connected to the same limiting ring, a plurality of sliding grooves for the protrusions to slide are opened on the side wall of the air pipe, a second cylinder is fixedly installed on the top of the air pipe, and the output end of the second cylinder is fixedly connected to the limiting ring, and a sealing gasket is fixedly installed on the inner side of the end of the sliding tube.

[0010] A further improvement of the technical solution of the present invention is that the power supply assembly includes a second lifting platform installed on a second right-angle seat, a telescopic box is fixedly installed on the top of the second lifting platform, an electric plug board is fixedly installed on the output end of the telescopic box, and a plurality of sockets are arranged in sequence from top to bottom on the electric plug board.

[0011] A further improvement of the technical solution of the present invention is that anti-collision pads are fixedly installed on the tops of the first lifting platform and the second lifting platform.

[0012] A further improvement of the technical solution of the present invention is that the air supply mechanism includes a pressure regulating valve connected to the filter through a pipeline, the pressure regulating valve is sequentially connected to a diaphragm valve, a needle valve, a second filter and a vacuum gauge through a pipeline, and the vacuum gauge is connected to the air pipe through a pipeline.

[0013] A further improvement of the technical solution of the present invention is that the vacuum mechanism includes a bellows connected to the air pipe, and a plurality of the bellows are commonly connected to the same dry pump.

[0014] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides docking components at both ends of the valve to be tested to fix the valve to be tested, so that the valve to be tested can be quickly connected to or disconnected from the air pipes at both ends, thereby effectively improving the detection efficiency of the detection air path device; 2. The design of the docking assembly in the present invention includes a sliding tube and a sealing gasket, which ensures that the air pipe is accurately aligned with the end of the valve to be tested, avoids leakage caused by misalignment of the air pipe and the valve to be tested, and improves the sealing and reliability of the test; 3 In the present invention, the auxiliary unloading assembly drives the second baffle to tilt and starts the first cylinder through the second motor, driving the push plate to push the valve to be tested away from the regulating assembly, thereby realizing rapid unloading, reducing the operation steps, and improving the efficiency of mass testing; 4. Each detection gas circuit device in the present invention is equipped with a sensor, which records the valve's switching time, leakage rate, particles and other parameters through the electronic control module, and analyzes the recorded data to help testers quickly judge the performance of the valve, thereby improving the accuracy and efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the gas path detection equipment of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of multiple positioning mechanisms in the present invention; Figure 3 is an enlarged schematic diagram of one of the positioning mechanisms in the present invention; Figure 4 for Figure 3 Bottom view of Figure 5 is a schematic diagram of the positioning mechanism of the present invention from another angle; Figure 6 for Figure 5 A is an enlarged schematic diagram; Figure 7 for Figure 5 A front cross-sectional view of Figure 8 for Figure 7 A magnified schematic diagram of B.

[0017] In the figure: 1. Detection gas circuit device; 2. Gas supply mechanism; 21. Pressure regulating valve; 22. Diaphragm valve; 23. Needle valve; 24. Second filter; 25. Vacuum gauge; 3. Positioning mechanism; 31. First right-angle seat; 32. Second right-angle seat; 33. First motor; 34. First lifting platform; 35. Air pipe; 351. Slide; 4. Vacuum mechanism; 41. Bellows; 42. Dry pump; 5. Adjustment assembly; 51. Two-way telescopic box; 52. First baffle ; 53. Second baffle; 6. Auxiliary unloading assembly; 61. First cylinder; 62. Push plate; 63. Second motor; 7. Power supply assembly; 71. Second lifting platform; 72. Telescopic box; 73. Electric plug board; 731. Socket; 8. Docking assembly; 81. Sliding tube; 811. Protrusion; 82. Limiting ring; 83. Second cylinder; 84. Sealing gasket; 9. Anti-collision pad; 10. Air compressor; 11. CDA main pipeline; 12. First filter. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] Example: Figures 1 to 8 As shown, the present invention provides a test fixture for a vacuum valve, including a detection gas circuit device, the detection gas circuit device includes a gas supply unit, the gas supply unit is connected to a plurality of detection gas circuit devices 1 through a pipeline, the detection gas circuit device 1 includes a gas supply mechanism 2, a positioning mechanism 3 and a vacuum mechanism 4, and one end of the positioning mechanism 3 is fixedly connected to the gas supply mechanism 2, and the other end is fixedly connected to the vacuum mechanism 4, and the gas supply mechanism 2, the positioning mechanism 3 and the vacuum mechanism 4 are all interconnected through a pipeline; The positioning mechanism 3 includes a base, a first right-angle seat 31 is fixedly installed on the top of the base, a second right-angle seat 32 is rotatably connected to the bottom of the first right-angle seat 31, a first motor 33 for driving the second right-angle seat 32 to rotate is fixedly installed on the bottom of the base, a first lifting platform 34 is fixedly connected to the first right-angle seat 31 and the second right-angle seat 32, an adjustment component 5 is fixedly connected to the first lifting platform 34, an auxiliary unloading component 6 is fixedly installed on the side wall of the adjustment component 5, a power supply component 7 is fixedly installed on the second right-angle seat 32, an air pipe 35 is fixedly installed on the side walls of the first right-angle seat 31 and the second right-angle seat 32, a docking component 8 is slidably installed in the air pipe 35, and the two docking components 8 cooperate with each other to connect the valve to be tested with the air pipes 35 at both ends.

[0021] As a specific embodiment provided as a test tool for a vacuum valve, the air supply unit includes an air compressor 10, the air compressor 10 is externally connected to a CDA main pipeline 11, and a first filter 12 is fixedly connected to one end of the CDA main pipeline 11 away from the air compressor 10.

[0022] As a further illustration of the embodiments of the present invention, in addition to conventional long-tube vacuum valves, vacuum valves on the market also have vacuum valves of various angles, such as right-angle vacuum valves, acute-angle vacuum valves, and obtuse-angle vacuum valves. However, the vacuum valve testing tooling in the prior art has certain singleness and limitations and cannot be applied to the testing of vacuum valves of various angles. In this embodiment, the complete testing process of the conventional long-tube vacuum valve is as follows: dry compressed air or nitrogen is injected into the CDA main pipeline 11 through the air compressor 10. The injected compressed air passes through the first filter 12 and then flows into multiple detection gas circuit devices 1 through the pipeline. In each detection gas circuit device 1, the compressed air passes through the pressure regulating valve 21, the diaphragm valve 22, the needle valve 23, and the second filter 24 in sequence before entering the vacuum gauge 25 (in this embodiment, a heating device is provided at the pipeline connection of the vacuum gauge 25, which is used to heat the compressed gas in the pipeline to facilitate the testing of the valve under extreme working conditions). After ensuring that the gas in all gas supply mechanisms 2 is circulated, , transport the valve to be tested to the positioning mechanism 3, adjust the valve to be tested to be coaxial with the air pipe 35 through the cooperation of the adjustment component 5 and the first lifting platform 34, adjust the power supply component 7, connect the power supply component 7 to the power interface of the electric device on the valve to be tested, and after the valve to be tested is connected to the power supply component 7 and powered on, start the docking component 8 on the first right-angle seat 31 and the second right-angle seat 32, connect the two air pipes 35 with the two ends of the valve to be tested, fill one end of the valve to be tested with gas through the gas supply mechanism 2, and then remove the air in the other end of the valve to be tested through the vacuum mechanism 4, test the pressure difference at both ends of the valve to be tested, and test the airtightness of the valve to be tested. After a series of valve tests, reset the docking components 8 at both ends of the valve to be tested, push the valve to be tested out of the adjustment component 5 through the auxiliary unloading component 6, and lay a conveyor belt on one side of each detection gas path device 1 to receive the valve to be tested that is pushed away, thereby forming a complete and continuous valve testing operation process. As a further preferred scheme of this embodiment, when facing vacuum valve tests at various other angles, in this embodiment, the first motor 33 drives the second right-angle seat 32 to rotate a preset angle so that the second right-angle seat 32 and the first right-angle seat 31 form an angle that is the same as the angle of the valve to be tested, and the valve to be tested is placed in the adjusting component 5. After adjustment and further restriction by the adjusting component 5, the valve to be tested is fixed in the adjusting component 5, and the above steps are repeated to drive the docking component 8 and the power supply component 7 to connect the air supply mechanism 2 and the vacuum mechanism 4 with the valve to be tested. After performing the above tests, the restrictions of the adjusting component 5 and the docking component 8 on the component to be tested are released, and the valve to be tested is pushed away by the auxiliary unloading component 6 to complete the test of the unconventional vacuum valve, so that the present device can test the transfer vacuum valves with various angles, thereby improving the scope of application of the present device.

[0023] As a specific embodiment provided as a test tool for a vacuum valve, the adjustment component 5 includes a two-way telescopic box 51 fixedly installed on the top of the first lifting platform 34, and the output end of one end of the two-way telescopic box 51 is fixedly connected to the first baffle 52, and the output end of the other two-way telescopic box 51 is rotatably installed with a second baffle 53 connected to the auxiliary unloading component 6, and when the valve body to be tested is unloaded, the second baffle 53 can be rotated to tilt downward through the auxiliary unloading component 6.

[0024] As a further illustration of the embodiment of the present invention, the bidirectional telescopic box 51 in the present embodiment has two output ends (the bidirectional telescopic box 51 in the present embodiment is a combination of existing telescopic devices, such as a bidirectional screw or two unidirectional screws respectively driving the two clamps to perform mirror motion), and the telescopic paths of the two output ends are exactly the same. By adjusting the spacing between the first baffle 52 and the second baffle 53, the first baffle 52 and the second baffle 53 are both pressed against the side wall of the valve to be tested, and the valve to be tested is clamped and fixed between the first baffle 52 and the second baffle 53. Because the center bisectors of the bidirectional telescopic box 51 and the air pipe 35 are the same, when the valve to be tested is clamped and fixed, the valve to be tested is at the center position of the bidirectional telescopic box 51. Then, the first lifting platform 34 is used to lift the fixedly clamped valve to be tested to be coaxially arranged with the air pipe 35, thereby ensuring that the end of the air pipe 35 is aligned with the end of the valve to be tested, thereby avoiding leakage of the test gas when the air pipe 35 and the valve to be tested are misaligned.

[0025] As a specific embodiment provided as a test fixture for a vacuum valve, the auxiliary unloading assembly 6 includes a first cylinder 61 fixedly mounted on the side wall of the first baffle 52, the output end of the first cylinder 61 passes through the first baffle 52 and is fixedly connected to the push plate 62, the side wall of one of the output ends of the two-way telescopic box 51 is fixedly connected to the second motor 63, and the output end of the second motor 63 is fixedly connected to the second baffle 53.

[0026] As a further explanation of the embodiment of the present invention, in this embodiment, after the valve to be tested is tested, the second motor 63 drives the second baffle 53 to rotate a preset angle so that the second baffle 53 no longer presses against the outer wall of the valve to be tested. At this time, the second baffle 53 tilts downward to form a slope, and then the first cylinder 61 is started, and the push plate 62 is driven by the first cylinder 61 to push the valve to be tested toward the second baffle 53 until the valve to be tested slides away from the adjusting component 5 along the inclined surface formed by the second baffle 53, thereby achieving the function of assisting material discharge.

[0027] As a specific embodiment provided as a test tool for a vacuum valve, the docking assembly 8 includes a sliding tube 81 that is sleeved in the air pipe 35, and the outer wall of the sliding tube 81 is fixedly connected with a plurality of protrusions 811 along the circumferential direction of the sliding tube 81, and the plurality of protrusions 811 are commonly connected to the same limiting ring 82, and a plurality of sliding grooves 351 for the protrusions 811 to slide are opened on the side wall of the air pipe 35, a second cylinder 83 is fixedly installed on the top of the air pipe 35, and the output end of the second cylinder 83 is fixedly connected to the limiting ring 82, and a sealing gasket 84 is fixedly installed on the inner side of the end of the sliding tube 81.

[0028] As a further explanation of the embodiment of the present invention, in this embodiment, the plurality of protrusions 811 have a limiting effect, so that the sliding tube 81 can only slide back and forth along the axial direction of the air pipe 35. A sealing gasket 84 is installed in the sliding tube 81, and when the second cylinder 83 drives the sliding tube 81 to slide, the end with the sealing gasket 84 is fitted with the end of the valve to be tested, so that the sealing gasket 84 serves as a sealing means between the air pipe 35 and the valve to be tested. In this embodiment, the sealing gasket 84 is made of rubber with a certain thickness, and is deformed after being resisted by the sealing ring at both ends of the component to be tested, thereby improving the sealing effect.

[0029] As a specific embodiment provided as a test tool for a vacuum valve, the power supply assembly 7 includes a second lifting platform 71 installed on a second right-angle seat 32, a telescopic box 72 is fixedly installed on the top of the second lifting platform 71, an electric plug board 73 is fixedly installed on the output end of the telescopic box 72, and a plurality of sockets 731 are arranged in sequence from top to bottom on the electric plug board 73.

[0030] As a further explanation of the embodiment of the present invention, in this embodiment, the power connector of the valve to be tested is fixed to the side wall of the valve to be tested. After the valve to be tested is clamped and fixed by the adjustment component 5, the telescopic box 72 is started (the telescopic box 72 in this embodiment is a conventional existing telescopic device, such as a screw, a cylinder or an oil cylinder, etc.), and the electric plug board 73 with the socket 731 is moved close to the side wall of the valve to be tested until the power connector of the valve to be tested is inserted into the socket 731, so that the electric device in the valve to be tested is energized, and a control signal is sent to the electric device so that the electric device issues an instruction to open and close the valve, thereby cooperating with different valve tests. As a further explanation of this embodiment, before the valve to be tested is tested, according to the different models of the valve to be tested, the second lifting platform 71 is adaptively adjusted in a direction parallel to the ground of the second right-angle seat 32 to ensure that the socket 731 and the power connector of the valve to be tested can be smoothly connected.

[0031] As a specific embodiment provided as a test fixture for a vacuum valve, anti-collision pads 9 are fixedly installed on the tops of the first lifting platform 34 and the second lifting platform 71 .

[0032] As a further explanation of an embodiment of the present invention, in this embodiment, when the valve to be tested is placed in the adjusting assembly 5, the first baffle 52 and the second baffle 53 in the adjusting assembly 5 do not conflict with the side wall of the valve to be tested, so an anti-collision pad 9 is laid to prevent the valve to be tested from being damaged by collision when entering the adjusting assembly 5.

[0033] As a specific embodiment provided as a test tool for a vacuum valve, the air supply mechanism 2 includes a pressure regulating valve 21 connected to the first filter 12 through a pipeline, the pressure regulating valve 21 is sequentially connected to a diaphragm valve 22, a needle valve 23, a second filter 24 and a vacuum gauge 25 through a pipeline, and the vacuum gauge 25 is connected to the air pipe 35 through a pipeline.

[0034] As a specific embodiment provided as a test tool for a vacuum valve, the vacuum mechanism 4 includes a bellows 41 connected to the air pipe 35, and a plurality of bellows 41 are commonly connected to the same dry pump 42.

[0035] As a further illustration of an embodiment of the present invention, in this embodiment, after the valve to be tested is connected to the air pipe 35, compressed air is injected into one end of the valve to be tested through the vacuum gauge 25, and at the other end of the valve to be tested, the air in the valve to be tested is extracted through the dry pump 42, and the pressure difference at both ends of the valve to be tested is tested to determine whether there is a leak; the entire detection air circuit device 1 has an electronic control module that is connected and used to control all electronic control devices, each detection air circuit device 1 supports collecting the switching signal of the valve to be tested, and calculates the switching time of the valve to be tested through data analysis, each pressure regulating valve 21, diaphragm valve 22 and needle valve 23 is provided with a sensor, and the sensors of the pressure regulating valve 21, diaphragm valve 22 and needle valve 23 are all passive dry contact type sensors, and each detection is recorded through the electronic control module. The driving times of each valve in the gas circuit device 1 are measured, the opening and closing time, leakage rate and particles of each valve are recorded regularly, and various parameters of the valve to be measured are analyzed through the recorded data; each detection gas circuit device 1 is provided with a target pressure value, when the pressure of the detection gas circuit device 1 exceeds the set target pressure value, the diaphragm valve 22 is driven to close and stop the flow, and when the pressure drops to below 90% of the target pressure value again, the diaphragm valve 22 is driven to open again; that is, the vacuum gauge 25 converts the internal pressure into an electrical signal and sends it to the electronic control module, when the internal gas of the vacuum gauge 25 reaches the set value, the diaphragm valve 22 is controlled by the electronic control module to close and stop the flow, and a three-color light is set in the electronic control module, and when the detection gas circuit device 1 reaches the target pressure value, the gas supply is stopped and used for warning.

[0036] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0037] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A vacuum valve testing tool, including a gas path testing device, characterized in that: The detection gas path equipment includes a gas supply unit, the gas supply unit is connected to a plurality of detection gas path devices through pipelines, the detection gas path devices include a gas supply mechanism, a positioning mechanism and a vacuum mechanism, and one end of the positioning mechanism is fixedly connected to the gas supply mechanism, and the other end is fixedly connected to the vacuum mechanism, and the gas supply mechanism, the positioning mechanism and the vacuum mechanism are all interconnected through pipelines; The positioning mechanism includes a base, a first right-angle seat is fixedly installed on the top of the base, a second right-angle seat is rotatably connected to the bottom of the first right-angle seat, a first motor for driving the second right-angle seat to rotate is fixedly installed on the bottom of the base, a first lifting platform is fixedly connected to the first right-angle seat and the second right-angle seat, an adjustment component is fixedly connected to the first lifting platform, an auxiliary blanking component is fixedly installed on the side wall of the adjustment component, a power supply component is fixedly installed on the second right-angle seat, an air pipe is fixedly installed on the side wall of the first right-angle seat and the second right-angle seat, a docking component is slidably installed in the air pipe, and the two docking components cooperate with each other to connect the valve to be tested with the air pipes at both ends; The adjustment component includes a two-way telescopic box fixedly installed on the top of the first lifting platform, the output end of one end of the two-way telescopic box is fixedly connected to the first baffle, and the output end of the other two-way telescopic box is rotatably installed with a second baffle connected to the auxiliary unloading component, and when the valve body to be tested is unloaded, the second baffle can be rotated to tilt downward through the auxiliary unloading component.

2. A vacuum valve testing tool according to claim 1, characterized in that: The air supply unit comprises an air compressor, the air compressor is externally connected to a CDA main pipeline, and one end of the CDA main pipeline away from the air compressor is fixedly connected to a first filter.

3. A vacuum valve testing tool according to claim 1, characterized in that: The auxiliary unloading assembly includes a first cylinder fixedly mounted on the side wall of the first baffle, the output end of the first cylinder passes through the first baffle and is fixedly connected to a push plate, the side wall of one of the output ends of the two-way telescopic box is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to the second baffle.

4. A vacuum valve testing tool according to claim 1, characterized in that: The docking assembly includes a sliding tube sleeved in the air pipe, the outer wall of the sliding tube is fixedly connected with a plurality of protrusions along the circumferential direction of the sliding tube, the plurality of protrusions are commonly connected with the same limiting ring, a plurality of sliding grooves for the protrusions to slide are opened on the side wall of the air pipe, a second cylinder is fixedly installed on the top of the air pipe, and the output end of the second cylinder is fixedly connected to the limiting ring, and a sealing gasket is fixedly installed on the inner side of the end of the sliding tube.

5. The vacuum valve testing tool according to claim 1, characterized in that: The power supply assembly includes a second lifting platform installed on a second right-angle seat, a telescopic box is fixedly installed on the top of the second lifting platform, an electric plug board is fixedly installed on the output end of the telescopic box, and a plurality of sockets are arranged in sequence from top to bottom on the electric plug board.

6. A vacuum valve testing tool according to any one of claims 1 or 6, characterized in that: Anti-collision pads are fixedly installed on the tops of the first lifting platform and the second lifting platform.

7. A vacuum valve testing tool according to claim 2, characterized in that: The air supply mechanism includes a pressure regulating valve connected to the first filter through a pipeline, the pressure regulating valve is sequentially connected to a diaphragm valve, a needle valve, a second filter and a vacuum gauge through a pipeline, and the vacuum gauge is connected to the air pipe through a pipeline.

8. The vacuum valve testing tool according to claim 1, characterized in that: The vacuum mechanism comprises a bellows connected to the air pipe, and a plurality of the bellows are connected to the same dry pump.

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