A submersible pump air tightness detection device

Abstract

This invention relates to the field of airtightness testing, and more particularly to a submersible pump airtightness testing device, comprising a first water tank and a second water tank, etc.; the second water tank is placed to the right of the first water tank. This invention simulates the sealing condition of the submersible pump operating in a sandy environment by placing sand and gravel on an isolation plate after the submersible pump operates, with the sand and gravel flowing towards the filter holes. A disc and a baffle cover cover the submersible pump motor, preventing the air bubbles generated when the submersible pump motor leaks from being affected by the water flow generated when the filter holes are pumped, thus improving the accuracy of the device in detecting the submersible pump's airtightness. The baffle divides the pump into six chambers, reducing the offset space when air bubbles rise, preventing air bubbles from adjacent leak locations from merging into large air bubbles during the rising process, and ensuring that the camera can identify multiple leak points in the submersible pump motor, thereby improving the device's effectiveness in detecting the submersible pump's airtightness.

Description

Technical Field

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

[0002] A submersible pump consists of two major parts: an impeller and a motor. As a water pumping device working in various water environments, it needs to be immersed in water to work. The air tightness test of the submersible pump is to ensure normal operation while preventing the motor from being damaged by soaking in water. However, the existing submersible pump testing devices remove the impeller and then test the sealing performance of the motor in water separately. This method cannot simulate the sealing performance of the submersible pump when it is working, resulting in the test data being unable to be used as reference data. At the same time, when the submersible pump is working in various water environments, it is easy to encounter interference from external factors such as sand and mud. The existing device cannot simulate the sealing test of the submersible pump when it is working in a real environment.

[0003] At the same time, the submersible pump needs to pump water when working. When the submersible pump leaks, the bubbles generated are easily driven away from the leakage point by the water flow, resulting in the inability of the existing device to accurately determine the leakage position of the motor during detection. At the same time, the bubbles are easily carried away by the water flow into the impeller, resulting in the monitoring device being unable to observe the bubbles of the motor leakage, and thus unable to determine the leakage condition of the motor. Summary of the invention

[0004] In order to overcome the shortcomings of existing devices that the sealing data of the motor detected alone cannot be used as a reference, and cannot simulate the interference of external factors such as sand, mud, etc. in the real environment on the sealing of the submersible pump, and at the same time, the bubbles are easy to deviate from the leakage area when the submersible pump is working, and the bubbles are easy to be sucked into the impeller, the present invention provides a submersible pump air tightness detection device.

[0005] The technical solution is: a submersible pump air tightness detection device, including a first water tank, a second water tank and a water pipe; the second water tank is placed on the right side of the first water tank; the first water tank is provided with a first through groove; the second water tank is provided with a second through groove; the first through groove is connected to the second through groove; a submersible pump is placed in the first water tank; filter holes are provided on the submersible pump, and filter screens are provided on the filter holes; the submersible pump is connected to a water pipe; the water pipe is connected to the second water tank; it also includes an isolation plate, a monitoring component, a cleaning component and a wear system; an isolation plate simulating a sand and stone environment is provided in the first water tank; a number of slots are provided on the isolation plate, and a water-permeable filter screen is provided on each slot; a monitoring component for monitoring the sealing condition of the submersible pump during operation is installed in the first water tank; a cleaning component for preventing sand and stone from affecting the detection of the submersible pump is connected to the isolation plate; a wear system simulating the wear of the submersible pump by sand and stone is provided in the first water tank.

[0006] Furthermore, the cleaning component includes a first electric turntable, a circular disc, a scraper block and a guide strip; a first electric turntable is rotatably connected to the isolation plate; a circular disc is fixedly connected to the first electric turntable; a plurality of scrapers are fixedly connected to the upper side of the circular disc to prevent the filter holes from being blocked; a plurality of guide strips are fixedly connected to the upper side of the circular disc to prevent sand and stones from affecting the detection of the submersible pump.

[0007] Furthermore, the monitoring component includes a camera, a shield and a second electric turntable; a shield is rotatably connected to the inside of the first water tank; the shield is rotatably connected to the fixed part of the first electric turntable; a number of cameras are fixed to the inside of the shield to observe whether the submersible pump is leaking; a second electric turntable is fixed to the first water tank; and the rotating part of the second electric turntable is fixed to the shield.

[0008] Furthermore, it also includes a push plate; a plurality of push plates are rotatably connected to the isolation plate to assist the sand and gravel to flow to the submersible pump.

[0009] Furthermore, the wear system includes scrapers, sealing rings and guides; when the disc is not in use, three scrapers to prevent sand and stone accumulation can be fixed on the first electric turntable; each guide strip is fixed to the adjacent scraper blade; each scraper block is fixed to the adjacent scraper blade; a sealing ring is rotatably connected to the lower side of the first electric turntable; the sealing ring is fixed to the isolation plate, and the lower side of the sealing ring is rotatably connected to the baffle; the sealing ring is slidably connected to the scraper; a number of guides simulating the friction of sand and stone on the submersible pump motor are fixed in the baffle; each guide is located in an adjacent observation cavity; each guide is in contact with the submersible pump motor.

[0010] Furthermore, it also includes a one-way membrane; a plurality of one-way membranes are fixedly connected to the lower side of each guide; and all the one-way membranes are opened upward.

[0011] Furthermore, based on the view from top to bottom, the thickness of each scraper blade gradually becomes thinner in the clockwise direction.

[0012] Furthermore, the upper side of each guide is configured as a double-conical structure.

[0013] Furthermore, it also includes a slurry discharge plate; the sealing ring and the baffle cover together form three mud storage chambers; the inner side of the baffle cover is rotatably connected to a plurality of slurry discharge plates simulating the operation of a submersible pump in a mud environment through a torsion spring; each slurry discharge plate is located in an adjacent mud storage chamber.

[0014] Furthermore, the distance between the slurry discharge plates in the same slurry storage chamber gradually increases from top to bottom.

[0015] The beneficial effects are as follows: the present invention realizes that after the submersible pump works, sand and gravel are placed on the isolation plate, and the sand and gravel flow to the filter holes to simulate the sealing condition of the submersible pump working in a sand and gravel environment;

[0016] The disc and the shield cooperate to cover the submersible pump motor, so that the bubbles generated by the submersible pump motor when leaking will not be affected by the water flow generated by the filter hole when pumping water, thereby improving the accuracy of the device's detection of the sealing of the submersible pump;

[0017] Six chambers are separated by the shield to reduce the offset space when bubbles float up, prevent bubbles at adjacent leaking positions from merging into large bubbles during the floating process, avoid the camera being unable to determine multiple leaking points of the submersible pump motor, and improve the sealing detection effect of the device on the submersible pump;

[0018] The upper side of the guide is set to a double cone structure to prevent a large amount of sand and stones from falling into the observation chamber, avoiding the sand and stones from affecting the camera's observation of bubbles, and ensuring that the device monitors the sealing of the submersible pump when it is working;

[0019] The guide drives the sand and stones to rub against the submersible pump motor, thereby simulating the sealing state of the submersible pump motor before and after friction;

[0020] By gradually increasing the distance between the slurry discharge plates in the same mud storage chamber from top to bottom, the slurry discharge plates divide the mud storage chamber into three chambers with different volumes, thereby simulating the effect of mud of different concentrations on the sealing of the submersible pump during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the air tightness detection device for a submersible pump of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the combination of the first water tank and the second water tank of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the water pipe and the isolation plate combination of the present invention;

[0024] Figure 4 A cross-sectional view of a baffle cover according to the present invention;

[0025] Figure 5 A top view of the camera and shield assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper blade and the sealing ring combination of the present invention;

[0027] Figure 7 An exploded view of the scraper blade and the sealing ring of the present invention;

[0028] Figure 8 It is a schematic diagram of the combined three-dimensional structure of the guide and the one-way membrane of the present invention;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the pulp discharge plate of the present invention.

[0030] Parts names and serial numbers in the figure: 1-first water tank, 1001-first through groove, 2-second water tank, 2001-second through groove, 3-water pipe, 4-submersible pump, 4001-filter hole, 5-isolation plate, 101-first electric turntable, 102-disc, 103-camera, 104-scraper block, 105-guide strip, 106-push plate, 107-blocking cover, 10701-observation chamber, 108-second electric turntable, 201-scraper, 202-sealing ring, 20201-mud storage chamber, 203-guide, 204-one-way membrane, 301-slurry discharge plate. DETAILED DESCRIPTION

[0031] The preferred technical solutions of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0032] like Figure 2-Figure 5 As shown, a submersible pump 4 air tightness detection device includes a first water tank 1, a second water tank 2 and a water pipe 3; the second water tank 2 is placed on the right side of the first water tank 1; a first through groove 1001 is opened on the lower side of the first water tank 1; a second through groove 2001 is opened on the lower side of the second water tank 2; the first through groove 1001 is communicated with the second through groove 2001; a submersible pump 4 is placed in the first water tank 1; a filter hole 4001 is provided on the submersible pump 4, and a filter screen is provided on the filter hole 4001; a water pipe 3 is connected to the upper side of the submersible pump 4; the water pipe 3 is communicated with the second water tank 2;

[0033] It also includes an isolation plate 5, a monitoring component, a cleaning component and a wear system; an isolation plate 5 is arranged in the first water tank 1; a plurality of slots are opened on the isolation plate 5, and a water-permeable filter is arranged on each slot; a monitoring component is installed in the first water tank 1; a cleaning component is connected to the isolation plate 5; and a wear system is arranged in the first water tank 1.

[0034] The cleaning assembly includes a first electric turntable 101, a disc 102, a scraper block 104 and a guide strip 105; a first electric turntable 101 is rotatably connected to the isolation plate 5; the disc 102 is fixedly connected to the first electric turntable 101; three scrapers 104 are fixedly connected to the upper side of the disc 102; and three guide strips 105 are fixedly connected to the upper side of the disc 102.

[0035] The monitoring component includes a camera 103, a shield 107 and a second electric turntable 108; a shield 107 is rotatably connected to the bottom inner side of the first water tank 1; the shield 107 is rotatably connected to the fixed part of the first electric turntable 101; three cameras 103 are fixedly connected to the inner side of the shield 107; a second electric turntable 108 is fixedly connected to the first water tank 1; the rotating part of the second electric turntable 108 is fixedly connected to the shield 107.

[0036] It also includes a push plate 106; a plurality of push plates 106 are rotatably connected to the isolation plate 5.

[0037] Before testing the air tightness of the submersible pump 4, the worker first fills the first water tank 1 and the second water tank 2 with water. When the water surface submerges the water inlet and outlet of the water pipe 3, the worker puts the submersible pump 4 into the baffle 107, and uses the baffle 107 and the disc 102 to limit the submersible pump 4 to prevent it from tipping over. Then the upper side of the submersible pump 4 is connected to the water pipe 3, and then the submersible pump 4 is started. After water is poured into the first water tank 1 and the second water tank 2, since the water is mixed with air during the pouring process, the vibration generated by the submersible pump 4 when it is working drives the air in the water to float upward. In this process, the air floats up in the form of bubbles, and the submersible pump 4 leaks when the sealing is tested. Similarly, bubbles will float up. In order to reduce the interference of air in the water with the sealing test of the submersible pump 4, the submersible pump 4 will be started for a period of time to eliminate the air in the water and make the bubbles generated by vibration in the water tend to be stable and small. At this time, the submersible pump 4 will be observed and monitored at work through the camera 103. When the submersible pump 4 is working, the water in the first water tank 1 is pumped into the second water tank 2 through the filter hole 4001 and the water pipe 3, and then discharged back to the first water tank 1 through the second groove 2001 and the first groove 1001 for circulation. Bubbles will be generated after the submersible pump 4 leaks, and the bubbles are easily driven by the water flow to the filter hole 4001, which causes the camera 103 to monitor the submersible pump 4. It is difficult for the camera 103 to monitor the leakage of the submersible pump 4, and the motor on the lower side of the submersible pump 4 is the key detection position. When bubbles float up, their floating path is affected by the water flow and the floating path is greatly offset, which in turn affects the judgment of the specific leakage position of the submersible pump 4. In order to avoid this phenomenon, after the submersible pump 4 is placed in the baffle 107, the motor part of the submersible pump 4 is covered by the disc 102 and the baffle 107, so that the filter hole 4001 can pump water normally when the submersible pump 4 is working, and the bubbles generated by the motor of the submersible pump 4 when leaking will not be affected by the water flow generated by the filter hole 4001 when pumping water. At this time, the camera 103 is used to monitor the motor part of the submersible pump 4 to detect the leakage of the submersible pump 4. The sealing condition of the pump 4 under normal operation, and the use of the baffle 107 to separate six chambers, reduce the offset space when the bubbles float up, and prevent the bubbles at adjacent leakage positions from merging into large bubbles during the floating process, resulting in the camera 103 being unable to determine the multiple leakage points of the submersible pump 4 motor. When the camera 103 observes the leakage of the submersible pump 4 in the observation chamber 10701, based on the view from top to bottom, the second electric turntable 108 drives the baffle 107 and the camera 103 to rotate forty-five degrees clockwise, so that the camera 103 and the observation chamber 10701 are rotated to the other three chambers separated by the baffle 107, and then the submersible pump 4 motor is tested again.

[0038] It is also considered that when the submersible pump 4 works in an environment with a lot of sand and stones, in order to simulate the sealing condition of the submersible pump 4 in this scenario, the workers first pour the sand and stones into the first water tank 1, so that the sand and stones fall on the isolation plate 5, and then start the submersible pump 4 to work. When the water flows to the filter hole 4001, the sand and stones are guided by the water flow to flow to the filter hole 4001 together, and a large amount of sand and stones are retained around the filter hole 4001 through the filter net on the filter hole 4001. At the same time, when the submersible pump 4 is working, the water in the first water tank 1 flows to the second water tank 2 through the water pipe 3, and the water in the second water tank 2 flows back to the first water tank 2 through the second through groove 2001 and the first through groove 1001. In the water tank 1, since the filter hole 4001 is higher than the first through groove 1001, when the submersible pump 4 is working, the water in the first water tank 1 flows upward from the lower side of the isolation plate 5, and then flows to the filter hole 4001. In this process, the water flow pushes the push plate 106 open, so that the push plate 106 opens toward the submersible pump 4, and then pushes the sand and gravel accumulated on the push plate 106 toward the filter hole 4001, thereby improving the effect of the device attaching sand and gravel to the filter hole 4001. At this time, the submersible pump 4 working in this environment is monitored through the camera 103, and then the sealing condition of the submersible pump 4 in the sand and gravel environment is monitored, so that the sealing detection data of the submersible pump 4 is more referenceable.

[0039] In the above process, after the submersible pump 4 is inspected in a sandy environment, in order to prevent the sand and stones from getting stuck in the filter hole 4001 and affecting subsequent inspections, the submersible pump 4 is driven to reverse, so that the water in the second water tank 2 is pumped into the first water tank 1, and then the water flows out from the filter hole 4001. Based on the view from top to bottom, the first electric turntable 101 is driven to rotate clockwise, thereby driving the scraper block 104 to rotate along the filter hole 4001, so that the scraper block 104 cooperates with the water flow at the filter hole 4001 to clean the stuck sand and stones. At the same time, the rotation of the guide bar 105 is used to guide the sand and stones accumulated at the filter hole 4001 to the surroundings, and the sand and stones are kept away from the submersible pump 4 with the action of the water flow, so as to prevent the sand and stones from falling into the observation chamber 10701 after the worker pulls out the submersible pump 4, thereby preventing the sand and stones from affecting the sealing inspection of the next submersible pump 4, and improving the device's inspection capability of the submersible pump 4. Example 2

[0040] On the basis of Example 1, Figure 6-Figure 8As shown, the wear system includes a scraper 201, a sealing ring 202 and a guide 203; when the disc 102 in the embodiment is not used, three scrapers 201 can also be fixed to the first electric turntable 101; each guide strip 105 is fixed to the adjacent scraper 201; each scraper block 104 is fixed to the adjacent scraper 201; a sealing ring 202 is rotatably connected to the lower side of the first electric turntable 101; the sealing ring 202 is fixed to the isolation plate 5, and the lower side of the sealing ring 202 is rotatably connected to the baffle 107; the sealing ring 202 is slidably connected to the scraper 201; a number of guides 203 are fixed in the baffle 107; each guide 203 is located in the adjacent observation cavity 10701; each guide 203 is in contact with the motor of the submersible pump 4.

[0041] It also includes a one-way membrane 204; two one-way membranes 204 are fixedly connected to the lower side of each guide 203; and all the one-way membranes 204 are opened upwards.

[0042] As viewed from top to bottom, the thickness of each scraper blade 201 gradually becomes thinner in the clockwise direction, so as to prevent the scraper blade 201 from getting stuck between the sealing ring 202 and the scraper blade 201 when scraping sand and stones, causing the device to be unable to operate normally.

[0043] The upper side of each guide 203 is configured as a double-conical structure to prevent a large amount of sand and stones from falling into the observation chamber 10701, thereby preventing the sand and stones from affecting the camera 103 in observing the bubbles and ensuring that the device monitors the sealing performance of the submersible pump 4 when it is working.

[0044] When simulating the submersible pump 4 working in a sandy environment, the water level continues to drop due to the continuous operation of the submersible pump 4 in the real scene, and the sand and stones in the water are accumulated at the motor on the lower side of the submersible pump 4 at this time. Affected by the water flow generated by the filter hole 4001 when pumping water, it continuously flows and rubs against the motor of the submersible pump 4, thereby wearing the motor of the submersible pump 4. In order to simulate the two sealing conditions of the motor of the submersible pump 4 before and after friction with the sand and stones, the first electric turntable 101 is started to rotate. The scraper 201 rotates clockwise, and then drives the scraper 201 to rotate, and the scraper 201 is used to scrape off the sand and stones on the sealing ring 202. At the same time, during the rotation of the scraper 201, the thickness of the scraper 201 gradually becomes thinner in the clockwise direction, based on the view from top to bottom, so that the sand and stones are affected by the rotation and guided by the guide strip 105, so that the sand and stones cannot remain on the upper side of the scraper 201. When the scraper 201 overlaps with the sealing ring 202, the upper side of the observation chamber 10701 is connected to the first water tank 1, so that the sand is affected by the scraper 201. It is pushed into the observation chamber 10701. It should be noted that: at this time, the submersible pump 4 is in a reverse state to clean the sand and gravel, so that the sand and gravel are guided by the water flow to the observation chamber 10701 at the same time, and then the sand and gravel are guided by the double-conical structure of the guide 203 and collected in the guide 203 to prevent the sand and gravel from directly flowing into the observation chamber 10701 and preventing the sand and gravel from affecting the camera 103 in observing the air bubbles. When the sand and gravel are accumulated in the guide 203, the first electric turntable 101 is driven to rotate clockwise again to proceed. With the cooperation of the scraper 201 and the baffle 107, the observation chamber 10701 is closed again, and then the submersible pump 4 is started to rotate forward in the water. Based on the view from top to bottom, the first electric turntable 101 and the second electric turntable 108 are started to rotate clockwise synchronously, thereby driving the guide 203 to rotate clockwise, so that the sand and gravel in the guide 203 rub against the motor of the submersible pump 4, and the water leakage of the motor of the submersible pump 4 is observed through the camera 103, thereby simulating the sealing state of the submersible pump 4 motor under the friction with the sand and gravel.

[0045] After the monitoring of the sealing status under the friction between the motor of the submersible pump 4 and the sand and stones is completed, the second electric turntable 108 is started to stop rotating, and then the first electric turntable 101 is started to drive the scraper 201 to rotate again, so that the observation chamber 10701 is connected with the first water tank 1 again. At this time, the submersible pump 4 rotates forward to make the water flow to the filter hole 4001. In this process, the one-way membrane 204 is pushed open by the upward water flow, so that the sand and stones in the guide 203 are guided by the upward water flow to flow to the filter hole 4001 again. When all the sand and stones flow out of the guide 203, the scraper 201 is rotated again, so that the scraper 201 cooperates with the baffle 107 to seal the observation chamber 10701, and then the camera 103 is used to monitor the sealing condition of the motor of the submersible pump 4 after wear again, and the discharged sand and stones are used again to simulate the working scene of the submersible pump 4 in the sand and stone environment, and further simulate the interference of the sand and stones on the sealing detection of the submersible pump 4 in the sand and stone environment, so that the sealing detection of the submersible pump 4 is more in line with the actual use scenario. Example 3

[0046] On the basis of Examples 1 and 2, Figure 1 , Figure 2 and Fig. 9 As shown, it also includes a pulp discharge plate 301; the sealing ring 202 and the baffle 107 together form three mud storage chambers 20201; the inner side of the baffle 107 is rotatably connected to a plurality of pulp discharge plates 301 through a torsion spring; each pulp discharge plate 301 is located in an adjacent mud storage chamber 20201.

[0047] The spacing between the pulp discharge plates 301 located in the same mud storage chamber 20201 gradually increases from top to bottom.

[0048] When the submersible pump 4 is working, the scenario with a lot of mud is also taken into consideration. The submersible pump 4 is easily affected by uneven mud during operation, resulting in different stresses on the sealing part and incomplete sealing. In order to simulate the sealing condition of the submersible pump 4 when encountering a lot of mud, the worker first fills the mud storage chamber 20201 with mud before filling the first water tank 1 with water. The water in the first water tank 1 cannot enter the mud storage chamber 20201 through the cooperation of the sealing ring 202 and the baffle 107. When it is necessary to simulate the mud environment When looking from top to bottom, by starting the first electric turntable 101 and the second electric turntable 108 to rotate clockwise, the scraper 201 and the baffle 107 are synchronously rotated clockwise. When the baffle 107 and the upper side of the sealing ring 202 are gradually separated, the mud storage chamber 20201 is connected with the first water tank 1, and the mud in the mud storage chamber 20201 flows into the first water tank 1. At this time, the submersible pump 4 is started to rotate forward, thereby simulating the sealing condition of the submersible pump 4 in an environment with more mud.

[0049] In the above process, the mud storage chamber 20201 is divided into three chambers by the mud discharge plate 301. When the mud storage chamber 20201 is filled with mud, the mud discharge plate 301 is squeezed by the mud to form a Fig. 9 In the state shown, when mud flows into the first water tank 1, the slurry discharge plate 301 loses the squeezing of the mud, and is driven to open upward by the torsion spring reset, thereby preventing the mud from flowing into the first water tank 1 at one time and polluting the water in the first water tank 1. At the same time, the spacing of the slurry discharge plates 301 in the same mud storage chamber 20201 gradually increases from top to bottom, so that the slurry discharge plate 301 divides the mud storage chamber 20201 into three chambers with different volumes, thereby simulating the influence of mud of different concentrations on the operation of the submersible pump 4. In this process, in order to prevent the mud from affecting the camera 103 to observe the leakage of the submersible pump 4, the scraper 201 and the baffle 107 are used to make the observation chamber 10701 in a sealed state, so that the water containing mud cannot enter the observation chamber 10701, so that the submersible pump 4 is not affected by the mud when working in the mud environment, and the sealing condition of the submersible pump 4 is accurately observed. When the mud environment detection is completed, the workers replace the water in the first water tank 1 and the second water tank 2 to detect the next submersible pump 4.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A submersible pump air tightness detection device, comprising a first water tank (1), a second water tank (2) and a water pipe (3); the second water tank (2) is placed on the right side of the first water tank (1); the first water tank (1) is provided with a first through groove (1001); the second water tank (2) is provided with a second through groove (2001); the first through groove (1001) is communicated with the second through groove (2001); a submersible pump (4) is placed in the first water tank (1); a filter hole (4001) is provided on the submersible pump (4), and a filter screen is provided on the filter hole (4001); the submersible pump (4) is connected to the water pipe (3); the water pipe (3) is communicated with the second water tank (2); the device is characterized in that: It also includes an isolation plate (5), a monitoring component, a cleaning component and a wear system; an isolation plate (5) for simulating a sand and stone environment is arranged in the first water tank (1); a plurality of slots are provided on the isolation plate (5), and a water-permeable filter is arranged on each slot; a monitoring component for monitoring the sealing condition of the submersible pump (4) during operation is installed in the first water tank (1); a cleaning component for preventing sand and stone from affecting the detection of the submersible pump (4) is connected to the isolation plate (5); and a wear system for simulating the submersible pump (4) being worn by sand and stone is arranged in the first water tank (1); The cleaning assembly comprises a first electric turntable (101), a circular disc (102), a scraper (104) and a guide strip (105); a first electric turntable (101) is rotatably connected to the isolation plate (5); the circular disc (102) is fixedly connected to the first electric turntable (101); a plurality of scrapers (104) are fixedly connected to the upper side of the circular disc (102) for preventing the filter holes (4001) from being blocked; a plurality of guide strips (105) are fixedly connected to the upper side of the circular disc (102) for preventing sand and stones from affecting the detection of the submersible pump (4); The monitoring component comprises a camera (103), a shield (107) and a second electric turntable (108); a shield (107) is rotatably connected to the inside of the first water tank (1); the shield (107) is rotatably connected to the fixed part of the first electric turntable (101); a plurality of cameras (103) for observing whether the submersible pump (4) is leaking are fixedly connected to the inside of the shield (107); the second electric turntable (108) is fixedly connected to the first water tank (1); the rotating part of the second electric turntable (108) is fixedly connected to the shield (107); It also includes a push plate (106); a plurality of push plates (106) are rotatably connected to the isolation plate (5) and assist sand and gravel to flow toward the submersible pump (4); The wear system comprises a scraper (201), a sealing ring (202) and a guide (203); when the disc (102) is not in use, three scrapers (201) for preventing sand and stone from accumulating can be fixedly connected to the first electric turntable (101); each guide bar (105) is fixedly connected to an adjacent scraper (201); each scraper block (104) is fixedly connected to an adjacent scraper (201); a sealing ring (202) is rotatably connected to the lower side of the first electric turntable (101) The sealing ring (202) is fixedly connected to the isolation plate (5), and the lower side of the sealing ring (202) is rotatably connected to the baffle (107); the sealing ring (202) is slidably connected to the scraper (201); a plurality of guides (203) are fixedly connected in the baffle (107) to simulate the friction of sand and stones on the motor of the submersible pump (4); each guide (203) is located in an adjacent observation cavity (10701); each guide (203) is in contact with the motor of the submersible pump (4).

2. A submersible pump air tightness detection device according to claim 1, characterized in that: It also includes a one-way membrane (204); a plurality of one-way membranes (204) are fixedly connected to the lower side of each guide (203); and all the one-way membranes (204) are opened upwards.

3. A submersible pump air tightness detection device according to claim 1, characterized in that: With the view from top to bottom as a reference, the thickness of each scraper blade (201) gradually becomes thinner in the clockwise direction.

4. A submersible pump air tightness detection device according to claim 2, characterized in that: The upper side of each guide (203) is configured as a double-conical structure.

5. A submersible pump air tightness detection device according to claim 1, characterized in that: It also includes a slurry discharge plate (301); the sealing ring (202) and the baffle (107) together form three mud storage chambers (20201); a plurality of slurry discharge plates (301) simulating the submersible pump (4) working in a mud environment are rotatably connected to the inner side of the baffle (107) via a torsion spring; each slurry discharge plate (301) is located in an adjacent mud storage chamber (20201).

6. A submersible pump air tightness detection device according to claim 5, characterized in that: The distance between the slurry discharge plates (301) located in the same slurry storage chamber (20201) gradually increases from top to bottom.

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