Permanent magnet synchronous axial drainage pump

Abstract

The application discloses a permanent magnet synchronous axial water drainage pump and belongs to the technical field of water pumps. The water drainage pump is provided with a purification assembly and a diagnosis assembly on a water inlet path. The purification assembly is composed of two groups of purification assembly one and purification assembly two, which are of the same structure. The purification assembly one and the purification assembly two are both provided with a filter cover and a impurity removal assembly. The diagnosis assembly is composed of a flow sensor, which is installed at the liquid inlet of the water drainage pump. When the filter cover of one group of the purification assembly is blocked, the diagnosis assembly can quickly detect the blocking condition and automatically close the blocked purification assembly while opening the other group of the purification assembly to continue working. The process does not require manual intervention, the working purification assembly drives the impurity removal assembly to clean the non-working purification assembly, realizes self-cleaning, reduces the blocking degree of the filter cover and ensures the stable performance of the water drainage work.

Description

Technical Field

[0001] This invention relates to the field of water pump technology, and more specifically, to a permanent magnet synchronous axial flow drainage pump. Background Technology

[0002] Drainage pumps, as a type of pump equipment specifically designed for drainage, play a vital role during rainfall or floods. Their main function is to quickly and effectively remove accumulated water, thereby preventing various disasters caused by excessive water accumulation. However, during drainage operations, the water often contains a large number of impurities, such as twigs, leaves, and plastic bags. Once these impurities are sucked into the drainage pump, they can easily jam the impeller inside the pump, causing the drainage pump to malfunction.

[0003] To address this issue, existing technologies typically employ the method of installing a filter screen at the inlet of the drainage pump. While the filter screen effectively blocks impurities from entering the pump body, these impurities gradually accumulate on the surface of the filter screen during the pumping process, leading to clogging. Once the filter screen is clogged, it significantly reduces the pumping effect of the drainage pump and affects drainage efficiency.

[0004] To further improve the problem of filter clogging, several solutions have been proposed in the existing technology. One of them is to install a oscillating brush or scraper on the surface of the filter. The continuous oscillation of the brush or scraper can push away impurities on the surface of the filter and prevent clogging. However, this method also has certain limitations. The impurities pushed away by the brush or scraper can easily flow back to the filter with the water flow, resulting in limited effectiveness.

[0005] Besides clogging, filter damage is another issue that needs attention. During use, filters may break due to various reasons (such as aging, corrosion, external impact, etc.). Once the filter is damaged, impurities will flow out from the broken opening and directly enter the pump body, causing damage. At the same time, the damaged filter loses its filtering function and cannot effectively block impurities. Worse still, existing filter systems often cannot monitor the status of the filter in real time, and cannot detect and deal with filter damage in a timely manner. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention aims to provide a permanent magnet synchronous axial flow drainage pump that can quickly detect the blockage when the filter cover of one set of purification components becomes clogged, automatically shut down the clogged purification component, and simultaneously start another set of purification components to continue working. This process requires no manual intervention, allowing the working purification component to drive the impurity removal component to clean the non-working purification component, thus achieving self-cleaning, reducing the degree of filter cover blockage, and ensuring stable drainage work.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A permanent magnet synchronous axial flow drainage pump includes a drainage pump, and a purification component and a diagnostic component are installed on the water inlet path of the drainage pump. The purification component consists of two sets, namely purification component one and purification component two, and the two have the same structure. Both purification component one and purification component two are equipped with a filter cover and a dirt removal component.

[0009] The diagnostic component includes a flow rate sensor installed at the inlet of the drainage pump. A liquid pressure sensor is installed below the filter cover in the purification component, and a liquid pressure sensor is installed above the filter cover. By calculating the difference between the values ​​detected by liquid pressure sensor one and liquid pressure sensor two, if the difference reaches a preset threshold, it is determined that the filter cover in the corresponding set of purification components is blocked. At this time, the blocked purification component is closed, and another set of purification components is opened at the same time. The impurity removal component is also opened at the same time to clean the filter cover in the blocked purification component.

[0010] The drainage pump is also equipped with an external controller. The controller records in real time the difference between the values ​​detected by liquid pressure sensor 1 and liquid pressure sensor 2 and the corresponding flow rate value detected by the flow rate sensor when each set of purification components is turned on, and uses this as historical data. If there is a difference between the historical values ​​detected by liquid pressure sensor 1 and liquid pressure sensor 2 and the corresponding historical flow rate value; if there is the same difference in historical values, and the actual flow rate value detected by the flow rate sensor is greater than the historical flow rate value, it is determined that the filter cover is damaged; if the actual flow rate value detected by the flow rate sensor is less than the historical flow rate value, it is determined that there is a leak in the path between the filter cover and the flow rate sensor.

[0011] Furthermore, both purification component one and purification component two include a purification box. A support plate is installed on the inner wall of the purification box, and a filter cover is installed on the support plate. A solenoid valve one is installed at the upper end of the purification box, and a water guide pipe is installed at the upper end of the solenoid valve one. The end of the water guide pipe away from the solenoid valve one is connected to the water inlet of the drainage pump. A solenoid valve two is installed at the lower end of the purification box, and a diversion pipe is connected at the end of the solenoid valve two away from the purification box. The end of the diversion pipe away from the solenoid valve two is connected to the water inlet pipe.

[0012] Furthermore, the impurity removal component includes a guide pipe, and a connecting hole is provided through the adjacent sidewalls of the two sets of purification boxes. The guide pipe is placed in the connecting hole, and its left and right ends extend into the corresponding purification boxes respectively. An elastic diaphragm is installed on the sidewall of the guide pipe, and the edge of the elastic diaphragm is fixedly connected to the inner wall of the connecting hole. Both the left and right ends of the guide pipe are connected to drain pipes, and the lower end of the drain pipe is connected to the corresponding filter cover. Corrugated sheets are installed on both the left and right ends of the guide pipe at the top. The support plate is made of elastic material.

[0013] Furthermore, the impurity removal component also includes a drain hole, with an inclined drain hole extending through the side wall of the drain pipe. The spray nozzle of the drain hole faces the inner wall of the filter cover, and multiple sets of drain holes are provided.

[0014] Furthermore, the impurity removal assembly also includes an impeller, with the impeller fixedly connected to the inner wall of the drain pipe, the upper end of the drain pipe rotatably connected to the guide pipe, and the lower end of the drain pipe rotatably connected to the filter cover.

[0015] Furthermore, both liquid pressure sensor one and liquid pressure sensor two are installed on the side wall of the purification tank, and the flow rate sensor is installed at the connection between the water pipe and the drainage pump.

[0016] Furthermore, a slag discharge port is provided at the rear end face of the purification box near the inner bottom wall. Slide rails are installed on both the left and right sides of the slag discharge port on the side wall of the purification box. A sealing plate is slidably installed on the slide rail, which is used to close the slag discharge port. An electric telescopic rod is installed on the side wall of the purification box. A fixed block is fixedly connected to the lower end of the electric telescopic rod. A movable block is set inside the fixed block. One end of the movable block moves through the fixed block and is fixedly connected to the side surface of the sealing plate.

[0017] Furthermore, a water receiving box is installed on the side surface of the purification box at the lower end of the slag discharge port, a filter screen is installed at the upper opening of the water receiving box, and a return pipe is installed at one end of the water receiving box.

[0018] Furthermore, electromagnets are embedded in the side wall of the purification box around the slag discharge port, and the sealing plate is made of magnetically conductive material.

[0019] Furthermore, the inner bottom wall of the purification box is designed to be inclined, and the inclination is directed towards the slag discharge port.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] When the filter cover of one of the purification components becomes clogged, the diagnostic component can quickly detect the blockage and automatically shut down the clogged purification component while starting up another purification component to continue working. This process requires no manual intervention, allowing the working purification component to drive the impurity removal component to clean the unworking purification component, thus achieving self-cleaning, reducing the degree of filter cover blockage, and ensuring that the drainage work can proceed stably. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is an external view of the overall structure of the present invention;

[0024] Figure 2 This is a diagram showing the interior of the purification chamber of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the impurity removal component of the present invention;

[0026] Figure 4 This is a rear view of the overall structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure at the slag discharge port of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the sealing plate of the present invention.

[0029] Explanation of the labels in the diagram:

[0030] 1. Frame; 2. Drainage pump; 3. Water guide pipe; 4. Inlet pipe; 5. Outlet pipe; 6. Purification tank; 7. Filter cover; 8. Support plate; 9. Solenoid valve one; 10. Solenoid valve two; 11. Diverter pipe; 12. Connecting hole; 13. Guide pipe; 14. Elastic diaphragm; 15. Drain pipe; 16. Drain hole; 17. Impeller; 18. Corrugated sheet; 19. Liquid pressure sensor one; 20. Liquid pressure sensor two; 21. Flow rate sensor; 22. Controller; 23. Electric telescopic rod; 24. Fixed block; 25. Moving block; 26. Sealing plate; 27. Slag discharge port; 28. Electromagnet; 29. ​​Slide rail plate; 30. Water receiving box; 31. Filter screen; 32. Return pipe. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 6 A permanent magnet synchronous axial flow drainage pump includes a drainage pump 2. A purification component and a diagnostic component are installed on the water inlet path of the drainage pump 2. The purification component consists of two sets, namely purification component one and purification component two, and the two have the same structure. A filter cover 7 and a dirt removal component are installed inside both purification component one and purification component two.

[0033] The diagnostic component includes a flow rate sensor 21, which is installed at the inlet of the drainage pump 2. A liquid pressure sensor 19 is installed below the filter cover 7 in the purification component, and a liquid pressure sensor 20 is installed above the filter cover 7. By calculating the difference between the values ​​detected by the liquid pressure sensor 19 and the liquid pressure sensor 20, if the difference reaches a preset threshold, it is determined that the filter cover 7 in the corresponding set of purification components is blocked. At this time, the corresponding blocked purification component is closed, and another set of purification components is opened at the same time. The impurity removal component is also opened at the same time to clean the filter cover 7 in the blocked purification component.

[0034] The external part of the drainage pump 2 is also equipped with a controller 22. The controller 22 records in real time the difference between the values ​​detected by the liquid pressure sensor 19 and the liquid pressure sensor 20 and the corresponding flow rate value detected by the flow rate sensor 21 when each set of purification components is turned on, and uses it as historical data. When there is a difference between the historical values ​​detected by the liquid pressure sensor 19 and the liquid pressure sensor 20 and the corresponding historical flow rate value; if there is the same difference in historical values, and the actual flow rate value detected by the flow rate sensor 21 is greater than the historical flow rate value, it is determined that the filter cover 7 is damaged; if the actual flow rate value detected by the flow rate sensor 21 is less than the historical flow rate value, it is determined that there is a leak in the path between the filter cover 7 and the flow rate sensor 21.

[0035] Liquid pressure sensor 19 and liquid pressure sensor 20 are both installed on the side wall of the purification tank 6, and flow rate sensor 21 is installed at the connection between the water pipe 3 and the drainage pump 2.

[0036] Both purification component one and purification component two include a purification box 6. A support plate 8 is installed on the inner wall of the purification box 6, and a filter cover 7 is installed on the support plate 8. A solenoid valve 10 is installed at the upper end of the purification box 6, and a water guide pipe 3 is installed at the upper end of the solenoid valve 10. The end of the water guide pipe 3 away from the solenoid valve 10 is connected to the water inlet of the drainage pump 2. A solenoid valve 2 9 is installed at the lower end of the purification box 6. A diversion pipe 11 is connected at the end of the solenoid valve 2 9 away from the purification box 6, and a water inlet pipe 4 is connected at the end of the diversion pipe 11 away from the solenoid valve 2 9.

[0037] By adopting the above technical solution, both the drainage pump 2 and the purification tank 6 are installed on the frame 1, which is made of angle iron or aluminum alloy square tubing. When drainage is required, the frame 1 is moved to the pumping location, and then the inlet pipe 4 is connected to the pumping pipe. The two can be connected via a flange. The pumping end of the pumping pipe is placed in the water source, and then the drainage pump 2 is turned on. Water will enter the inlet pipe 4 from the pumping pipe, and then enter the diversion pipe 11 from the inlet pipe 4. At this time, one set of purification components is activated. When solenoid valve 9 and solenoid valve 10 are opened in succession, the water in the diversion pipe 11 will flow into the corresponding purification tank 6 through solenoid valve 9 and be filtered by the filter cover 7 to remove impurities from the water. The filtered water flows out from the top of the purification tank 6 and finally flows into solenoid valve 10, and then flows into the water guide pipe 3 from solenoid valve 10. From the water guide pipe 3, it flows into the inlet of the drainage pump 2. The outlet of the drainage pump 2 is equipped with an outlet pipe 5. The filtered water is finally discharged from the outlet pipe 5.

[0038] Liquid pressure sensor 19 is used to detect the internal pressure of the liquid at the lower end of the filter cover 7, and liquid pressure sensor 20 is used to detect the internal pressure of the liquid at the upper end of the filter cover 7. The difference is calculated by subtracting the value detected by liquid pressure sensor 19 from the value detected by liquid pressure sensor 20. If the difference reaches a preset threshold, it indicates that the liquid pressure at the lower end of the filter cover 7 is too high, while the liquid pressure at the upper end of the filter cover 7 is very low, and the surface filter cover 7 is blocked. At this time, the controller 22 controls the solenoid valves 9 and 10 on the purification component to close, and at the same time opens the solenoid valves 9 and 10 on another purification component, so that the water flows through the other purification component and is filtered, and then the blocked filter cover 7 is cleaned.

[0039] The flow rate sensor 21 is used to monitor the water flow rate in the water pipe 3 in real time. Each time a purification component is activated, the controller 22 meticulously records the change in the difference between the values ​​detected by the liquid pressure sensor 19 and the liquid pressure sensor 20 within that purification component, as well as the corresponding flow rate value in the water pipe 3. Specifically, each purification component establishes two data sets: one is a set of differences, used to store the pressure difference detected each time; the other is a set of flow rates, used to store the flow rate value corresponding to each difference. The data in these two sets are one-to-one, meaning each difference is associated with a specific flow rate value. This recorded data is saved as historical data for subsequent analysis and judgment. During subsequent operation, when the controller 22 detects that the difference and flow rate of a certain purification component do not correspond, [the system will detect the difference]. If a situation occurs that matches the historical difference data, but the actual flow rate detected by the flow rate sensor 21 is greater than the historical flow rate value, it indicates that the filter cover 7 may be damaged. This is because a damaged filter cover 7 will reduce the resistance when water flows through, thereby increasing the flow rate.

[0040] Conversely, if historical difference data is found, but the actual flow rate detected by the flow rate sensor 21 is less than the historical flow rate value, it indicates a leak in the path between the filter cover 7 and the flow rate sensor 21. This leak causes some water to flow out of the pipe path, reducing the water flow through the flow rate sensor 21 and lowering the flow rate. When the diagnostic component detects this situation, it will issue an alarm, such as triggering a buzzer, and simultaneously display the alarm status on the control panel on the controller 22 for the operator to observe and take subsequent actions.

[0041] like Figures 2 to 3 As shown, the impurity removal component includes a guide pipe 13. A connecting hole 12 is provided through the adjacent side walls of the two sets of purification boxes 6. The guide pipe 13 is placed in the connecting hole 12, and its left and right ends extend into the corresponding purification boxes 6 respectively. An elastic diaphragm 14 is installed on the side wall of the guide pipe 13. The edge of the elastic diaphragm 14 is fixedly connected to the inner wall of the connecting hole 12. Both the left and right ends of the guide pipe 13 are connected to a drain pipe 15. The lower end of the drain pipe 15 is connected to the corresponding filter cover 7. Corrugated sheets 18 are installed on both the left and right ends of the guide pipe 13 and on the upper part. The support plate 8 is made of elastic material.

[0042] By adopting the above technical solution, when the filter cover 7 in one set of purification components becomes clogged, another set of purification components can be activated. At this time, water will flow through the purification tank 6 in the activated purification component. When the water flows through the corrugated sheet 18, it will drive the corrugated sheet 18 to vibrate. This vibration will also cause the guide pipe 13 connected to it to vibrate. The vibration of the guide pipe 13 will be transmitted to the purification tank 6 in the unactivated purification component, and at the same time cause the corresponding drain pipe 15 in the purification tank 6 to vibrate. The vibration of the drain pipe 15 will cause the clogged filter cover 7 to vibrate. Through the vibration of the filter cover 7, the impurities attached to its lower end surface can be quickly detached, thereby effectively removing the impurities on the filter cover 7.

[0043] like Figures 2 to 3 As shown, the impurity removal assembly also includes a drain hole 16. The drain pipe 15 has a drain hole 16 with an inclined orientation through it. The spray nozzle of the drain hole 16 faces the inner wall of the filter cover 7. Multiple sets of drain holes 16 are provided.

[0044] The impurity removal assembly also includes an impeller 17. The impeller 17 is fixedly connected to the inner wall of the drain pipe 15. The upper end of the drain pipe 15 is rotatably connected to the guide pipe 13, and the lower end of the drain pipe 15 is rotatably connected to the filter cover 7.

[0045] By adopting the above technical solution, when water flows through the purification box 6 in the activated purification component, the water will enter the drain pipe 15 through the drain hole 16, then flow along the guide pipe 13, and finally flow into the drain pipe 15 in the unactivated purification component. Finally, a fine water column is sprayed out from the drain hole 16 of the drain pipe 15. After the fine water column is sprayed out, it impacts the upper surface of the filter cover 7. The water flow impacts the mesh of the filter cover 7, thereby improving the cleaning effect on the filter cover 7. In addition, when the water flows through the drain pipe 15, it will also drive the impeller 17 to rotate. When the impeller 17 rotates, it will drive the drain pipe 15 to rotate. When the drain pipe 15 rotates, it will drive the sprayed fine water column to rotate as well. The rotation of the fine water column can increase the spray area on the filter cover 7, which facilitates the overall cleaning of the filter cover 7. This invention achieves self-cleaning by using two sets of purification components alternately, which drives the impurity removal component to clean the non-working purification component. This reduces the clogging of the filter cover 7, ensures stable drainage, and extends the service life of the purification components.

[0046] like Figures 4 to 6As shown, a slag discharge port 27 is provided on the rear end face of the purification box 6 near the inner bottom wall. Slide rails 29 are installed on both the left and right sides of the slag discharge port 27 on the side wall of the purification box 6. A sealing plate 26 is slidably installed on the slide rails 29. The sealing plate 26 is used to close the slag discharge port 27. An electric telescopic rod 23 is installed on the side wall of the purification box 6. A fixing block 24 is fixedly connected to the lower end of the electric telescopic rod 23. A moving block 25 is provided inside the fixing block 24. One end of the moving block 25 moves through the fixing block 24 and is fixedly connected to the side surface of the sealing plate 26. The inner bottom wall of the purification box 6 is inclined and tilted towards the slag discharge port 27.

[0047] By adopting the above technical solution, after the purification component is closed, the retraction of the electric telescopic rod 23 will cause the sealing plate 26 to rise and open the slag discharge port 27. After the purification component is open, the electric telescopic rod 23 will extend and cause the sealing plate 26 to fall, closing the slag discharge port 27. When the filter cover 7 is shaken and impacted by water flow, the impurities adhering to the filter cover 7 will fall off and land on the inner bottom wall of the purification box 6. Because the inner bottom wall is designed with an incline and tilts towards the slag discharge port 27, the impurities can easily slide out from the slag discharge port 27 along the slope. In addition, because there is a continuous flow of water from the filter cover 7, this water flows onto the inner bottom wall of the purification box 6. The water flows along the slope, which also helps to carry away the impurities on the slope, improving the slag discharge effect inside the purification box 6.

[0048] like Figures 4 to 6 As shown, a water receiving box 30 is installed on the side surface of the purification box 6 at the lower end of the slag discharge port 27. A filter screen 31 is installed at the upper opening of the water receiving box 30, and a return pipe 32 is installed at one end of the water receiving box 30.

[0049] By adopting the above technical solution, when impurities and water are discharged from the slag discharge port 27, they will pass through the filter screen 31. The water flows through the filter screen 31 into the water receiving box 30, and then flows into the return pipe 32 and is discharged from the return pipe 32.

[0050] like Figures 4 to 6 As shown, an electromagnet 28 is embedded in the side wall of the purification box 6 around the slag discharge port 27, and the sealing plate 26 is made of magnetic material.

[0051] By adopting the above technical solution, after closing the slag discharge port 27, the electromagnet 28 is turned on, and the electromagnet 28 will magnetically attract the sealing plate 26, thereby achieving a tight seal of the slag discharge port 27 and preventing water from flowing out of the slag discharge port 27. In addition, a silicone pad is connected to the side of the sealing plate 26 adjacent to the slag discharge port 27. In this way, when the electromagnet 28 magnetically attracts the sealing plate 26, the silicone pad on the sealing plate 26 is pressed tightly against the edge of the slag discharge port 27, which can improve the sealing effect of the slag discharge port 27.

[0052] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A permanent magnet synchronous axial flow drainage pump, comprising a drainage pump (2), characterized in that: The drainage pump (2) has a purification component and a diagnostic component installed on its inlet path. The purification component consists of two sets, namely purification component one and purification component two, and the two have the same structure. Both purification component one and purification component two are equipped with a filter cover (7) and a dirt removal component. The diagnostic component includes a flow rate sensor (21), which is installed at the inlet of the drainage pump (2). A liquid pressure sensor (19) is installed below the filter cover (7) in the purification component, and a liquid pressure sensor (20) is installed above the filter cover (7). By calculating the difference between the values ​​detected by the liquid pressure sensor (19) and the liquid pressure sensor (20), it is determined that the filter cover (7) in the corresponding set of purification components is blocked. At this time, the corresponding blocked purification component is closed, and another set of purification components is opened at the same time. The impurity removal component is also opened at the same time to clean the filter cover (7) in the blocked purification component. The external of the drainage pump (2) is also equipped with a controller (22). The controller (22) records in real time the difference between the values ​​detected by the liquid pressure sensor 1 (19) and the liquid pressure sensor 2 (20) and the corresponding flow rate value detected by the flow rate sensor (21) when each set of purification components is turned on, and uses it as historical data. When the difference between the historical values ​​detected by the liquid pressure sensor 1 (19) and the liquid pressure sensor 2 (20) is different from the corresponding historical flow rate value, if the difference between the historical values ​​is the same, and the flow rate value detected by the actual flow rate sensor (21) is greater than the historical flow rate value, it is determined that the filter cover (7) is damaged. If the flow rate value detected by the actual flow rate sensor (21) is less than the historical flow rate value, it is determined that there is a leak in the path between the filter cover (7) and the flow rate sensor (21). Both purification component one and purification component two include a purification box (6). A support plate (8) is installed on the inner wall of the purification box (6). A filter cover (7) is installed on the support plate (8). A solenoid valve one (10) is installed at the upper end of the purification box (6). A water guide pipe (3) is installed at the upper end of the solenoid valve one (10). The end of the water guide pipe (3) away from the solenoid valve one (10) is connected to the water inlet of the drainage pump (2). A solenoid valve two (9) is installed at the lower end of the purification box (6). A diversion pipe (11) is connected at the end of the solenoid valve two (9) away from the purification box (6). A water inlet pipe (4) is connected at the end of the diversion pipe (11) away from the solenoid valve two (9). The impurity removal assembly includes a guide pipe (13), and a connecting hole (12) is provided through the adjacent side walls of the two sets of purification boxes (6). The guide pipe (13) is set in the connecting hole (12), and the left and right ends extend into the corresponding purification boxes (6). An elastic diaphragm (14) is installed on the side wall of the guide pipe (13). The edge of the elastic diaphragm (14) is fixedly connected to the inner wall of the connecting hole (12). Both the left and right ends of the guide pipe (13) are connected to a drain pipe (15). The lower end of the drain pipe (15) is connected to the corresponding filter cover (7). Corrugated sheets (18) are installed on both the left and right ends of the guide pipe (13) and on the upper part.

2. The permanent magnet synchronous axial flow drainage pump according to claim 1, characterized in that: The impurity removal assembly also includes a drain hole (16), and the drain pipe (15) has a drain hole (16) with an inclined orientation through it on the side wall. The nozzle of the drain hole (16) faces the inner wall of the filter cover (7), and there are multiple sets of drain holes (16).

3. A permanent magnet synchronous axial flow drainage pump according to claim 2, characterized in that: The impurity removal assembly also includes an impeller (17), the inner wall of the drain pipe (15) is fixedly connected to the impeller (17), the upper end of the drain pipe (15) is rotatably connected to the guide pipe (13), and the lower end of the drain pipe (15) is rotatably connected to the filter cover (7).

4. A permanent magnet synchronous axial flow drainage pump according to claim 3, characterized in that: Liquid pressure sensor 1 (19) and liquid pressure sensor 2 (20) are both installed on the side wall of the purification tank (6), and flow rate sensor (21) is installed at the connection between the water pipe (3) and the drainage pump (2).

5. A permanent magnet synchronous axial flow drainage pump according to claim 4, characterized in that: A slag discharge port (27) is provided at the rear end face of the purification box (6) near the inner bottom wall. Slide rails (29) are installed on both the left and right sides of the slag discharge port (27) on the side wall of the purification box (6). A sealing plate (26) is slidably installed on the slide rail (29). The sealing plate (26) is used to close the slag discharge port (27). An electric telescopic rod (23) is installed on the side wall of the purification box (6). A fixed block (24) is fixedly connected to the lower end of the electric telescopic rod (23). A movable block (25) is provided inside the fixed block (24). One end of the movable block (25) moves through the fixed block (24) and is fixedly connected to the side surface of the sealing plate (26).

6. A permanent magnet synchronous axial flow drainage pump according to claim 5, characterized in that: A water receiving box (30) is installed on the side surface of the purification box (6) at the lower end of the slag discharge port (27). A filter screen (31) is installed at the upper opening of the water receiving box (30), and a return pipe (32) is installed at one end of the water receiving box (30).

7. A permanent magnet synchronous axial flow drainage pump according to claim 6, characterized in that: An electromagnet (28) is embedded in the side wall of the purification box (6) around the slag discharge port (27), and the sealing plate (26) is made of magnetic material.

8. A permanent magnet synchronous axial flow drainage pump according to claim 6, characterized in that: The inner bottom wall of the purification box (6) is designed to be inclined and tilted towards the slag discharge port (27).

9. A permanent magnet synchronous axial flow drainage pump according to claim 1, characterized in that: The support plate (8) is made of elastic material.

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