Vacuum pump air tightness detection device

Abstract

The invention relates to the field of vacuum pump production devices, in particular to a vacuum pump air tightness detection device which comprises a water tank, a top plate is fixed to the water tank, a supporting shaft is fixed to the top plate, a cover plate is arranged above the top plate, a supporting pipe is fixed to the cover plate, and the supporting shaft penetrates through the supporting pipe and is rotationally connected with the supporting pipe. A supporting ring used in cooperation with the cover plate is further fixed to the water tank, an exhaust pipe with a valve is further fixed to the cover plate, a rotating shaft is further arranged in the water tank and fixed to the output end of an overturning motor, a connecting plate is further fixed to the rotating shaft, and a fixing pipe is fixed to the tail end of the connecting plate. An air bag is fixed in the fixing pipe, the air bag is connected with an air pump through an air inlet pipe, an overflow pipe with a valve is further fixed on the water tank, an observation pipe is fixed on the overflow pipe, and a sliding block is arranged in the observation pipe. The device can test the air tightness of the pump body of the vacuum pump.

Description

Technical Field

[0001] The invention relates to the field of vacuum pump production devices, and in particular to an air tightness detection device for a vacuum pump. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. The airtightness of the vacuum pump directly affects the ultimate vacuum of the vacuum pump. Therefore, the airtightness of the vacuum pump needs to be checked. Patent application number: CN202310457541.6 discloses a vacuum pump air tightness detection device, including a detection box body, a detection water chamber for containing water is arranged at the inner bottom end of the detection box body, a drying mechanism with a drying chamber is arranged above the detection water chamber, and an observation window adapted to the position of the detection water chamber is also arranged on the detection box body; a supporting turntable is arranged on one side of the detection box body, and the supporting turntable is fixed to a vacuum pump to be inspected by a clamping mechanism close to one side of the detection box body, the supporting turntable is connected to a driving motor, and the supporting turntable is driven by the driving motor to rotate, thereby driving the vacuum pump to be inspected to enter the water body inside the detection water chamber, or enter the drying chamber of the drying mechanism; whether there are bubbles in the water in the detection water chamber is observed through the observation window to determine whether there is a problem with the air tightness of the vacuum pump to be inspected, but because water can dissolve a certain amount of air, when the vacuum pump leaks slowly, the bubbles in the water are not easy to be found, resulting in the inability to accurately detect whether there is a leakage problem in the vacuum pump.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a vacuum pump airtightness detection device.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The present invention discloses a vacuum pump air tightness detection device, comprising a water tank, a top plate is fixed on the water tank, a support shaft is fixed on the top plate, a cover plate is arranged above the top plate, a support tube is fixed on the cover plate, the support shaft passes through the support tube and is rotatably connected with the support tube, a support ring used in conjunction with the cover plate is also fixed on the water tank, an exhaust pipe with a valve is also fixed on the cover plate, a rotating shaft is also arranged in the water tank, the rotating shaft is fixed to the output end of a flip motor, a connecting plate is also fixed on the rotating shaft, a fixing tube is fixed at the end of the connecting plate, an air bag is fixed in the fixing tube, the air bag is connected to an air pump through an air inlet pipe, an inflation tube is also fixed on the air pump, an overflow tube with a valve is also fixed on the water tank, an observation tube is fixed on the overflow tube, a valve is fixed on the observation tube, and a slider is arranged in the observation tube. Pour a certain amount of water into the water tank, place the pump body of the vacuum pump in the fixed tube, fill the air bag with gas through the air pump, and fix the pump body into the tube after the air bag expands. After the pump body is fixed, connect the inflation tube to the air inlet of the pump body, start the flip motor, drive the rotating shaft to rotate, and the fixed tube rotates around the rotating shaft. After the fixed tube enters the water in the water tank, flip the cover plate, cover the support ring to seal the water tank, open the exhaust pipe, and drain water into the water tank through the water inlet pipe. After the water tank is filled with water, close the water inlet pipe and the exhaust pipe. Tube, close the valve on the overflow pipe, open the valve on the observation tube, inflate the pump body through the inflation tube, and observe whether the colored slider in the observation tube slides. When the pump body leaks, the gas enters the sealed water tank, the pressure in the water tank increases, the pressure on both sides of the slider is unequal, the water in the water tank enters the observation tube to push the slider to move, and the movement of the slider is confirmed through the observation tube to confirm whether the pump body is leaking. This device can realize the airtightness test of the vacuum pump body and confirm whether the vacuum pump is leaking by observing whether the slider moves. It is very convenient to operate.

[0007] Preferably, a sealing ring is also fixed on the cover plate.

[0008] Preferably, a plurality of positioning rods are fixed on the top plate, positioning shafts are fixed on the cover plate at positions corresponding to the positioning rods, positioning shafts are provided with positioning tubes, the positioning rods are provided with cylinders rotatably connected to the positioning rods, and the piston rod ends of the cylinders are fixed to the corresponding positioning tubes.

[0009] Preferably, the observation tube is made of glass.

[0010] Preferably, a water inlet pipe is also fixed on the water tank.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The device can realize air tightness test on the pump body of the vacuum pump and confirm whether the vacuum pump is leaking by observing whether the slider moves, which is very convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 A top view of the present invention;

[0016] Figure 3 for Figure 2 Sectional view at AA;

[0017] In the figure: 1, water tank; 2, top plate; 3, support shaft; 4, cover plate; 5, support pipe; 6, positioning shaft; 7, positioning rod; 8, cylinder; 9, positioning pipe; 10, exhaust pipe; 11, support ring; 12, sealing ring; 13, rotating shaft; 14, flip motor; 15, fixed pipe; 16, air inlet pipe; 17, air bag; 18, connecting plate; 19, pump body; 20, inflation pipe; 21, water inlet pipe; 22, overflow pipe; 23, observation pipe; 24, slider; DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0019] Embodiment 1:

[0020] like Figures 1 to 3As shown, the present embodiment discloses a vacuum pump air tightness detection device, comprising a water tank 1, a top plate 2 is fixed on the water tank 1, a support shaft 3 is fixed on the top plate 2, a cover plate 4 is arranged above the top plate 2, a support tube 5 is fixed on the cover plate 4, the support shaft 3 passes through the support tube 5 and is rotatably connected with the support tube 5, a support ring 11 used in conjunction with the cover plate 4 is also fixed on the water tank 1, an exhaust pipe 10 with a valve is also fixed on the cover plate 4, a rotating shaft 13 is also arranged in the water tank 1, the rotating shaft 13 is fixed to the output end of the flip motor 14, a connecting plate 18 is also fixed on the rotating shaft 13, a fixing tube 15 is fixed at the end of the connecting plate 18, an air bag 17 is fixed in the fixing tube 15, the air bag 17 is connected to the air pump through the air inlet pipe 16, an inflation tube 20 is also fixed on the air pump, an overflow pipe 22 with a valve is also fixed on the water tank 1, an observation tube 23 is fixed on the overflow pipe 22, a valve is fixed on the observation tube 23, and a slider 24 is arranged in the observation tube 23. A certain amount of water is injected into the water tank 1, and the pump body 19 of the vacuum pump is placed in the fixed tube 15. The air pump is used to fill the air bag 17 with gas. After the air bag 17 is inflated, the pump body 19 is fixed in the fixed tube 15. After the pump body 19 is fixed, the inflation tube 20 is connected to the air inlet of the pump body 19, and the flip motor 14 is started. The flip motor 14 drives the rotating shaft 13 to rotate, and the fixed tube 15 rotates around the rotating shaft 13. After the fixed tube 15 enters the water in the water tank 1, the cover plate 4 is flipped, and the cover plate 4 covers the support ring 11 to seal the water tank 1, and the exhaust pipe 10 is opened, and water is discharged into the water tank 1 through the water inlet pipe 21. After the water tank 1 is filled with water, the water inlet pipe is closed. 21 and the exhaust pipe 10, and close the valve on the overflow pipe 22 and open the valve on the observation tube 23, inflate the pump body 19 through the inflation tube 20, and observe whether the colored slider 24 in the observation tube 23 slides. When the pump body 19 leaks, the gas enters the sealed water tank 1, the pressure in the water tank 1 increases, and the pressures on both sides of the slider 24 are unequal. The water in the water tank 1 enters the observation tube 23 to push the slider 24 to move. The movement of the slider 24 is confirmed through the observation tube 23 to confirm whether the pump body 19 is leaking. The device can realize the airtightness test of the pump body 19 of the vacuum pump, and confirm whether the vacuum pump is leaking by observing whether the slider 24 moves, which is very convenient to operate.

[0021] Among them, multiple positioning rods 7 are fixed on the top plate 2, positioning shafts 6 are fixed on the cover plate 4 at positions corresponding to the positioning rods 7, positioning shafts 6 are provided with positioning tubes 9, and the positioning rods 7 are provided with cylinders 8 rotatably connected to the positioning rods 7, and the piston rod ends of the cylinders 8 are fixed to the corresponding positioning tubes 9.

[0022] The observation tube 23 is made of glass.

[0023] A water inlet pipe 21 is also fixed on the water tank 1 .

[0024] Embodiment 2:

[0025] This embodiment discloses a vacuum pump air tightness detection device. Based on the structure and principle of the first embodiment, a sealing ring 12 is further fixed on the cover plate 4 of this embodiment.

[0026] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum pump air tightness detection device, comprising a water tank, characterized in that: A top plate is fixed on the water tank, a support shaft is fixed on the top plate, a cover plate is arranged above the top plate, a support tube is fixed on the cover plate, the support shaft passes through the support tube and is rotatably connected to the support tube, a support ring used in conjunction with the cover plate is also fixed on the water tank, an exhaust pipe with a valve is also fixed on the cover plate, a rotating shaft is also arranged in the water tank, the rotating shaft is fixed to the output end of the flip motor, a connecting plate is also fixed on the rotating shaft, a fixing tube is fixed at the end of the connecting plate, an air bag is fixed in the fixing tube, the air bag is connected to the air pump through an air inlet pipe, an inflation tube is also fixed on the air pump, an overflow tube with a valve is also fixed on the water tank, an observation tube is fixed on the overflow tube, a valve is fixed on the observation tube, and a slider is arranged in the observation tube.

2. The vacuum pump airtightness detection device according to claim 1, characterized in that: A sealing ring is also fixed on the cover plate.

3. The vacuum pump airtightness detection device according to claim 1, characterized in that: A plurality of positioning rods are fixed on the top plate, positioning shafts are fixed at positions on the cover plate corresponding to the positioning rods, positioning shafts are provided with positioning tubes, the positioning rods are provided with cylinders rotatably connected to the positioning rods, and the piston rod ends of the cylinders are fixed to the corresponding positioning tubes.

4. The vacuum pump airtightness detection device according to claim 1, characterized in that: The sight tube is made of glass.

5. The vacuum pump airtightness detection device according to claim 1, characterized in that: A water inlet pipe is also fixed on the water tank.

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