Air tightness detection device for water pump

Abstract

The utility model belongs to the technical field of water pump air tightness detection, and particularly relates to an air tightness detection device for a water pump, which comprises a base, a detection box is mounted on the base, allochroic silica gel particles are adhered to the inner wall of a transparent plastic pipe, a vacuum pump is mounted on one side wall of the base through a fixing seat, and a vacuum pump is mounted on the other side wall of the base. An inflator pump is installed on the other side wall of the base through a fixing base, a wet sponge is placed at the joint of the inflator pump and the second air guide pipe, the interior of the detection box is pumped to a vacuum state through the vacuum pump, external air is conveyed into the water pump through the second air guide pipe through the inflator pump, and the humidity of the air conveyed into the water pump is large through the wet sponge; if the sealing performance of the water pump is unqualified, the wet air escapes from the water pump, the escaped wet air can be in contact with the allochroic silica gel particles, so that the allochroic silica gel particles become light red from blue, the air leakage position of the water pump can be quickly judged by observing the allochroic areas of the allochroic silica gel particles, and the detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump air tightness detection, in particular to an air tightness detection device for a water pump. Background Art

[0002] A water pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. In the production and processing of water pumps, it is necessary to conduct air tightness testing on water pump products to prevent water pump products that do not pass air tightness from entering the market. Therefore, it is necessary to use an air tightness testing device for testing.

[0003] The utility model application relates to the field of mechanical processing, detection and measurement technology, and in particular to an air tightness detection device for a water pump, comprising a machine platform, a positioning component, a clamping component and a lifting component, wherein the positioning component is used to realize axial positioning of one end of the water pump, the clamping component is used to close the liquid inlet of the water pump, and the lifting component comprises a connecting block, an air inlet pipe is arranged on the connecting block, a pressure gauge and an opening and closing valve are arranged on the air inlet pipe, and the valve is started to allow gas to pass, and the gas enters the connecting block, the liquid outlet and the liquid inlet in sequence from the air inlet pipe. After the gas is passed for five minutes, the valve is closed and the change in the indication of the pressure gauge is observed. If the indication of the pressure gauge is stable, it indicates that the water pump has good air tightness, and if the indication of the pressure gauge decreases, it means that the air tightness of the surface water pump is unqualified.

[0004] During the process of testing a water pump, the existing air tightness detection device can only detect the sealing condition of the water pump, but cannot detect the specific location of the leak, resulting in low detection accuracy; therefore, to address the above problem, an air tightness detection device for a water pump is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes an air tightness detection device for a water pump.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model is an airtightness detection device for a water pump, comprising a base, a detection box is installed on the base, the front door and the right side plate of the detection box are made of transparent glass, a transparent plate is fixedly installed on the inner wall of the right side plate of the detection box, a transparent hard tube is fixedly installed on the transparent plate, a transparent plastic tube is placed in the transparent hard tube, grooves are provided on the bottom sides of the transparent hard tube and the transparent plastic tube, color-changing silica gel particles are pasted on the inner wall of the transparent plastic tube, a vacuum pump is installed on one side wall of the base through a fixing seat, the vacuum pump is connected to a first air duct, the other end of the first air duct is connected to the side wall of the detection box and extends into the detection box, a pressure gauge is installed on the side wall of the detection box, the detection probe of the pressure gauge is installed inside the detection box, and the other end of the base An air pump is installed on the side wall through a fixed seat, and the air pump is connected to a second air duct. The other side of the second air duct extends to the inside of the detection box. A valve is installed on the second air duct. A wet sponge is placed at the connection between the air pump and the second air duct. The vacuum pump is operated to evacuate the inside of the detection box. The valve is opened and the air pump then delivers outside air to the water pump through the second air duct. The wet sponge makes the humidity of the air delivered to the water pump higher. If the sealing of the water pump is qualified, the humid air will not escape from the water pump. If the sealing of the water pump is unqualified, the humid air will escape from the water pump. The escaping humid air will come into contact with the color-changing silica gel particles, causing the color-changing silica gel particles to change from blue to light red. By observing the color-changing area of ​​the color-changing silica gel particles, the leakage position of the water pump can be quickly determined, which is beneficial to improving the accuracy of the detection.

[0007] Preferably, a motor is installed on the outer wall of the detection box through a fixed walking seat, a guide seat is installed between the inner walls of the detection box, a movable groove is opened on the inner wall of the guide seat, a first screw rod is rotatably installed between the inner walls of the movable groove through a bearing, the output shaft of the motor is fixedly connected to one end of the first screw rod, a movable block is assembled inside the movable groove, the movable block slides in cooperation with the first screw rod through a thread, a support plate is welded on the movable block, and a mounting seat is welded on the support plate, when the first screw rod rotates, the first screw rod drives the movable block to move horizontally, the movable block drives the support plate to move horizontally, the support plate drives the mounting seat to move horizontally, and the mounting seat drives the water pump to move horizontally, so that the water pump moves quickly into the color-changing silica gel particles, which is beneficial to improving the detection material rate.

[0008] Preferably, a slide groove is provided on the mounting seat, and a second screw rod is rotatably installed between the inner walls of the slide groove through a bearing, the threads on the second screw rod are symmetrically opposite, a handwheel is welded on one side of the second screw rod, and two groups of sliders are symmetrically assembled in the slide groove, and the sliders slide in cooperation with the second screw rod through threads, and a splint is welded on the slider, and a water pump is placed on the mounting seat, and a water inlet pipe and a water outlet pipe are installed on the water pump, and a rubber plug is placed in the water outlet pipe, and the second screw rod is rotated to drive the two groups of sliders thereon to slide synchronously relative to each other, and the two groups of sliders drive the two groups of splints to slide synchronously relative to each other, thereby achieving fixed clamping of the water pump, which is beneficial to improving the stability of the water pump.

[0009] The utility model is beneficial in that:

[0010] 1. The utility model operates through a vacuum pump, which draws the inside of the test box into a vacuum state, and then opens the valve, and then the air pump delivers outside air to the water pump through the second air duct. The wet sponge makes the humidity of the air delivered to the water pump higher. If the sealing of the water pump is qualified, the wet air will not escape from the water pump. If the sealing of the water pump is unqualified, the wet air will escape from the water pump. The escaped wet air will contact the color-changing silica gel particles, causing the color-changing silica gel particles to change from blue to light red. By observing the color-changing area of ​​the color-changing silica gel particles, the leakage position of the water pump can be quickly determined, which is beneficial to improving the accuracy of detection.

[0011] 2. The utility model rotates the first screw rod, which drives the moving block to move horizontally, the moving block drives the support plate to move horizontally, the support plate drives the mounting seat to move horizontally, and the mounting seat drives the water pump to move horizontally, so that the water pump moves quickly into the color-changing silica gel particles, which is convenient for improving the material detection rate. The second screw rod rotates, the second screw rod drives the two groups of sliders thereon to slide relative to each other synchronously, and the two groups of sliders drive the two groups of clamping plates to slide relative to each other synchronously, thereby achieving fixed clamping of the water pump, which is beneficial to improving the stability of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the color-changing silica gel particles;

[0015] Figure 3This is a schematic diagram of the three-dimensional structure of the water pump;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping component.

[0017] In the figure: 1. base; 2. detection box; 3. transparent plate; 4. transparent hard tube; 5. transparent plastic tube; 6. groove; 7. color-changing silica gel particles; 8. vacuum pump; 9. first air duct; 10. pressure gauge; 11. air pump; 12. second air duct; 13. valve; 14. motor; 15. guide seat; 16. moving groove; 17. first screw rod; 18. moving block; 19. support plate; 20. mounting seat; 21. slide groove; 22. second screw rod; 23. slider; 24. splint; 25. water pump; 26. water inlet pipe; 27. water outlet pipe; 28. hand wheel. DETAILED DESCRIPTION

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

[0019] See also Figure 1-4As shown, an air tightness detection device for a water pump comprises a base 1, a detection box 2 is installed on the base 1, the front door and the right side plate of the detection box 2 are made of transparent glass, a transparent plate 3 is fixedly installed on the inner wall of the right side plate of the detection box 2, a transparent hard tube 4 is fixedly installed on the transparent plate 3, a transparent plastic tube 5 is placed in the transparent hard tube 4, grooves 6 are provided on the bottom sides of the transparent hard tube 4 and the transparent plastic tube 5, color-changing silica gel particles 7 are pasted on the inner wall of the transparent plastic tube 5, a vacuum pump 8 is installed on one side wall of the base 1 through a fixing seat, the vacuum pump 8 is connected to a first air guide pipe 9, the other end of the first air guide pipe 9 is connected to the side wall of the detection box 2 and extends into the detection box 2, a pressure gauge 10 is installed on the side wall of the detection box 2, and the detection probe of the pressure gauge 10 The head is installed inside the detection box 2, and an air pump 11 is installed on the other side wall of the base 1 through a fixed seat. The air pump 11 is connected to a second air duct 12, and the other side of the second air duct 12 extends to the inside of the detection box 2. A valve 13 is installed on the second air duct 12, and a wet sponge is placed at the connection between the air pump 11 and the second air duct 12. A motor 14 is installed on the outer wall of the detection box 2 through a fixed seat, and a guide seat 15 is installed between the inner walls of the detection box 2. A moving groove 16 is opened on the inner wall of the guide seat 15, and a first screw rod 17 is rotatably installed between the inner walls of the moving groove 16 through a bearing. The output shaft of the motor 14 is fixedly connected to one end of the first screw rod 17, and a moving block 18 is assembled inside the moving groove 16, and the moving block 18 is connected to the first screw rod 17 through a thread. A threaded rod 17 slides in cooperation, a support plate 19 is welded on the moving block 18, a mounting seat 20 is welded on the support plate 19, a slide groove 21 is provided on the mounting seat 20, a second threaded rod 22 is rotatably mounted between the inner walls of the slide groove 21 through a bearing, the threads on the second threaded rod 22 are symmetrically opposite, a hand wheel 28 is welded on one side of the second threaded rod 22, two groups of sliders 23 are symmetrically assembled in the slide groove 21, the sliders 23 slide in cooperation with the second threaded rod 22 through threads, a clamping plate 24 is welded on the slider 23, a water pump 25 is placed on the mounting seat 20, a water inlet pipe 26 and a water outlet pipe 27 are installed on the water pump 25, a rubber plug is placed in the water outlet pipe 27; when working, the existing air tightness detection device is in the process of detecting the water pump 25, Only the sealing condition of the water pump 25 can be detected, but the specific position of the air leakage cannot be detected, resulting in low detection accuracy. By placing the transparent plastic tube 5 with the color-changing silica gel particles 7 pasted in the transparent hard tube 4, the water pump 25 to be detected is placed on the mounting seat 20, and the hand wheel 28 is turned to drive the second screw rod 22 to rotate, and the second screw rod 22 drives the two sets of sliders 23 thereon to slide relative to each other synchronously, and the two sets of sliders 23 drive the two sets of clamping plates 24 to slide relative to each other synchronously, so as to achieve the fixed clamping of the water pump 25, and then put the rubber plug into the water outlet pipe 27 of the water pump 25 to make the water outlet pipe 27 of the water pump 25 sealed, and then connect the second air guide pipe 12 with the water inlet pipe 26 of the water pump 25. After the installation is completed, close the box door;The vacuum pump 8 operates, and the vacuum pump 8 draws the inside of the test box 2 into a vacuum state, and the motor 14 operates, driving the first screw 17 to rotate, and the first screw 17 drives the moving block 18 to move horizontally, and the moving block 18 drives the support plate 19 to move horizontally, and the support plate 19 drives the mounting seat 20 to move horizontally; the mounting seat 20 drives the water pump 25 to move horizontally, so that the water pump 25 moves into the color-changing silica gel particles 7. At this time, the periphery of the water pump 25 is all color-changing silica gel particles 7. The main component of the color-changing silica gel particles 7 is cobalt chloride, which has a strong adsorption effect on water vapor in the air. At the same time, it can display different colors by changing the amount of cobalt chloride crystal water contained, that is, the blue color before moisture absorption gradually changes with the increase of moisture absorption. The air pump 11 is operated to deliver outside air to the water pump 25 through the second air duct 12 by opening the valve 13. Since a wet sponge is placed at the connection between the air pump 11 and the second air duct 12, the humidity of the air delivered to the water pump 25 is relatively high. If the sealing performance of the water pump 25 is qualified, the wet air will not escape from the water pump 25. If the sealing performance of the water pump 25 is unqualified, the wet air will escape from the water pump 25. The escaped wet air will contact the color-changing silica gel particles 7, causing the color-changing silica gel particles 7 to change from blue to light red. By observing the color-changing area of ​​the color-changing silica gel particles 7, the leakage position of the water pump 25 can be quickly determined, which is conducive to improving the accuracy of detection. ;

[0020] Working principle: the existing air tightness detection device can only detect the sealing condition of the water pump 25 during the detection of the water pump 25, but cannot detect the specific location of the air leakage, resulting in low detection accuracy. The transparent plastic tube 5 with color-changing silica gel particles 7 is placed in the transparent hard tube 4, and the water pump 25 to be detected is placed on the mounting seat 20. By turning the hand wheel 28, the second screw rod 22 is driven to rotate, and the second screw rod 22 drives the two sets of sliders 23 thereon to slide synchronously relative to each other, and the two sets of sliders 23 drive the two sets of clamping plates 24 to slide synchronously relative to each other. The water pump 25 is fixedly clamped by the first screw rod 17, and then the rubber plug is put into the water outlet pipe 27 of the water pump 25 to seal the water outlet pipe 27 of the water pump 25. Then the second air guide pipe 12 is connected to the water inlet pipe 26 of the water pump 25. After the installation is completed, the box door is closed; the vacuum pump 8 is operated to evacuate the inside of the detection box 2 to a vacuum state, and the motor 14 is operated to drive the first screw rod 17 to rotate, the first screw rod 17 drives the moving block 18 to move horizontally, the moving block 18 drives the supporting plate 19 to move horizontally, and the supporting plate 19 drives the mounting seat 20 to move horizontally. The mounting base 20 drives the water pump 25 to move horizontally, so that the water pump 25 moves into the color-changing silica gel particles 7. At this time, the periphery of the water pump 25 is all color-changing silica gel particles 7. The main component of the color-changing silica gel particles 7 is cobalt chloride, which has a strong adsorption effect on water vapor in the air. At the same time, it can display different colors by changing the amount of cobalt chloride crystal water contained, that is, the blue color before moisture absorption gradually changes to light red as the moisture absorption amount increases. By opening the valve 13, the air pump 11 is operated, and the air pump 11 delivers the outside air to the second air guide pipe 12. In the water pump 25, since a wet sponge is placed at the connection between the air pump 11 and the second air duct 12, the humidity of the air delivered to the water pump 25 is relatively high. If the sealing of the water pump 25 is qualified, the humid air will not escape from the water pump 25. If the sealing of the water pump 25 is unqualified, the humid air will escape from the water pump 25. The escaping humid air will come into contact with the color-changing silica gel particles 7, causing the color-changing silica gel particles 7 to change from blue to light red. By observing the color-changing area of ​​the color-changing silica gel particles 7, the leakage position of the water pump 25 can be quickly determined, which is conducive to improving the accuracy of detection.

[0021] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An air tightness detection device for a water pump, characterized in that The invention comprises a base (1), a detection box (2) is installed on the base (1), the front door and the right side plate of the detection box (2) are made of transparent glass, a transparent plate (3) is fixedly installed on the inner wall of the right side plate of the detection box (2), a transparent hard tube (4) is fixedly installed on the transparent plate (3), a transparent plastic tube (5) is placed in the transparent hard tube (4), the bottom sides of the transparent hard tube (4) and the transparent plastic tube (5) are provided with grooves (6), the inner wall of the transparent plastic tube (5) is pasted with color-changing silica gel particles (7), a vacuum pump (8) is installed on one side wall of the base (1) through a fixed seat, and the vacuum pump (8) is connected to a first air guide The base (1) is provided with a first air guide tube (9), the other end of the first air guide tube (9) is connected to the side wall of the detection box (2) and extends into the detection box (2), a pressure gauge (10) is installed on the side wall of the detection box (2), and a detection probe of the pressure gauge (10) is installed inside the detection box (2), an air pump (11) is installed on the other side wall of the base (1) through a fixing seat, the air pump (11) is connected to a second air guide tube (12), the other side of the second air guide tube (12) extends into the detection box (2), a valve (13) is installed on the second air guide tube (12), and a wet sponge is placed at the connection between the air pump (11) and the second air guide tube (12).

2. The air tightness detection device for a water pump according to claim 1, characterized in that: A motor (14) is installed on the outer wall of the detection box (2) via a fixed moving seat, a guide seat (15) is installed between the inner walls of the detection box (2), and a movable groove (16) is provided on the inner wall of the guide seat (15).

3. The air tightness detection device for a water pump according to claim 2, characterized in that: A first screw rod (17) is rotatably mounted between the inner walls of the movable groove (16) via a bearing, an output shaft of the motor (14) is fixedly connected to one end of the first screw rod (17), a movable block (18) is mounted inside the movable groove (16), and the movable block (18) slides in cooperation with the first screw rod (17) via a thread.

4. The air tightness detection device for a water pump according to claim 3, characterized in that: A support plate (19) is welded to the moving block (18), and a mounting seat (20) is welded to the support plate (19).

5. The air tightness detection device for a water pump according to claim 4, characterized in that: The mounting seat (20) is provided with a slide groove (21), and a second screw rod (22) is rotatably mounted between the inner walls of the slide groove (21) via a bearing, the threads on the second screw rod (22) are symmetrically opposite, a hand wheel (28) is welded on one side of the second screw rod (22), and two groups of sliders (23) are symmetrically assembled in the slide groove (21), the sliders (23) slide in cooperation with the second screw rod (22) via threads, and a clamping plate (24) is welded on the slider (23).

6. The air tightness detection device for a water pump according to claim 4, characterized in that: A water pump (25) is placed on the mounting seat (20), a water inlet pipe (26) and a water outlet pipe (27) are installed on the water pump (25), and a rubber plug is placed in the water outlet pipe (27).

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