Water pump with self-cleaning function

Abstract

The invention relates to the technical field of water pumps, in particular to a self-cleaning water pump which comprises a water pump body, a cleaning box is connected to a water inlet of the water pump body, a water inlet hole and a water outlet hole are formed in the cleaning box, the water outlet hole is in butt joint with the water inlet of the water pump body, turbine blades are connected into the water outlet hole, and the turbine blades are in butt joint with the water inlet of the water pump body. The turbine fan blades are connected with a driving assembly, a filtering assembly is connected into the cleaning box, the driving assembly is connected with the filtering assembly, and a cleaning assembly used for cleaning the filtering assembly is connected to the bottom of the cleaning box. Therefore, the water pump has a wide application prospect in the technical field of water pumps.

Description

Technical Field

[0001] This invention relates to the field of water pump technology, and in particular to a water pump with self-cleaning function. Background Technology

[0002] As a core piece of equipment in the fluid transport field, water pumps are widely used in various scenarios such as industrial production, municipal water supply, agricultural irrigation, and sewage treatment. Their operational stability and efficiency directly affect the normal operation and energy consumption control of the entire fluid transport system. Traditional water pumps generally face technical challenges such as easy clogging of filter components, high maintenance costs, and increased energy consumption when transporting liquids containing impurities. To intercept impurities in the liquid source and prevent them from entering the pump body and wearing down the impeller or clogging the flow channel, existing technologies typically install a fixed filter screen or filtration device at the pump inlet. However, this structure has significant drawbacks: Firstly, the filter screen pore size is difficult to balance filtration effect and flow efficiency. If the pore size is too large, it will easily let in fine impurities, while if the pore size is too small, it will be easily clogged quickly, leading to a decrease in pump inlet pressure, a decrease in output flow, and even cavitation, generating abnormal noise and vibration, exacerbating pump damage. At the same time, the pump needs to do extra work to overcome the clogging resistance, significantly increasing energy consumption. Secondly, the clogged filter components need to be manually disassembled and cleaned regularly, especially in scenarios with limited operating space, such as deep well pumps and submersible pumps. This not only consumes a lot of manpower, but frequent shutdowns also affect continuous operation. Summary of the Invention

[0003] (a) Technical problems to be solved In view of the above situation and to overcome the defects of the prior art, the present invention provides a water pump with self-cleaning function, which aims to solve the problems in the background art.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning water pump, comprising a water pump body, characterized in that a cleaning tank is connected to the water inlet of the water pump body, the cleaning tank has an inlet hole and an outlet hole, the outlet hole is connected to the water inlet of the water pump body, a turbine blade is connected inside the outlet hole, the turbine blade is connected to a drive assembly, a filter assembly for filtering the liquid source is connected inside the cleaning tank, the drive assembly is connected to the filter assembly, and a cleaning assembly for cleaning the filter assembly is connected to the bottom of the cleaning tank.

[0005] Preferably, the inner wall of the water outlet is connected to a plurality of fixed rods, and a support bearing is connected to the plurality of fixed rods. A rotating shaft is interference-fitted onto the support bearing, and the turbine blade is connected to the rotating shaft.

[0006] Preferably, the drive assembly includes a drive wheel, a transmission wheel, and a transmission belt. The drive wheel is connected to a rotating shaft, the transmission wheel is connected to the filter assembly, and the drive wheel and the transmission wheel are connected by the transmission belt.

[0007] Preferably, the filter assembly includes a filter disc, a filter screen, a sealing baffle, and a sealing gasket. A fixed bearing is connected to the inner wall of the cleaning box. The fixed bearing is interference-fitted with a connecting shaft. The filter disc and the drive wheel are connected to the connecting shaft. The filter disc has several filter openings. The filter screen is placed inside the filter openings. The mesh size of the filter screen gradually increases from the outside to the inside.

[0008] Preferably, the sealing baffle is connected to the inner wall of the cleaning box, a first sealing ring groove is formed on the end face of the sealing baffle near the filter disc, a second sealing ring groove is formed on the end face of the filter disc near the sealing baffle, and the sealing gasket is snapped into the first sealing ring groove and the second sealing ring groove.

[0009] Preferably, the cleaning assembly includes a cleaning scraper and a collection box. The collection box is connected to the inner bottom of the cleaning chamber, and the cleaning scraper is connected to the upper opening of the collection box. The cleaning scraper is inclined at an angle of 10° to 30°. A cleaning soft plate is connected to the end face of the cleaning scraper near the filter disc, and the cleaning soft plate abuts against the filter screen on the filter disc.

[0010] Preferably, the inside of the cleaning box at the collection box is provided with a collection port, and an upper drain pipe is connected to the cleaning box at the collection port. A drain assembly is connected to the upper drain pipe, and the drain assembly is connected to the outlet of the water pump body.

[0011] Preferably, the sewage discharge assembly includes a threaded connecting sleeve, a sealing head, a rotating ring, a sewage discharge solenoid valve, a lower sewage discharge pipe, and a fixing ring. The two ends of the threaded connecting sleeve are respectively threaded to one end of the upper sewage discharge pipe and one end of the lower sewage discharge pipe. The sealing head is connected inside the threaded connecting sleeve by a support rod. The end of the upper sewage discharge pipe away from the cleaning box is frustoconical, and the sealing head is conical. A sealing sleeve is fitted on the outer end face of the sealing head. Several connecting ring grooves are formed on the outer surface of the sealing head, and several connecting protrusions extend from the sealing sleeve. The connecting protrusions are engaged and connected in the connecting ring grooves.

[0012] Preferably, the rotating ring is disposed outside the threaded connecting sleeve. The outer surface of the threaded connecting sleeve has several pairs of matching limiting ring grooves and outer sealing ring grooves. The rotating ring has several limiting threaded holes corresponding to the limiting ring grooves. A connecting bolt is threaded into the limiting threaded hole, and one end of the connecting bolt extends into the limiting ring groove. The inner end face of the rotating ring has several inner sealing ring grooves. Sealing washers are engaged in the outer sealing ring grooves and the inner sealing ring grooves. A connecting ring groove is formed on the outer surface of the threaded connecting sleeve between the outer sealing ring grooves. Several internal connecting holes are formed in the connecting ring grooves, connecting to the interior of the threaded connecting sleeve. The rotating ring has an outer connecting hole that communicates with the connecting ring groove. The outer connecting hole is connected to the outlet of the water pump body through a backwash pipe.

[0013] Preferably, the drain solenoid valve is connected to the lower drain pipe, the fixing ring is sleeved on the lower drain pipe, the fixing ring has several fixing screw holes, the fixing screws are connected in the fixing screw holes, the outer surface of the lower drain pipe has an axial limiting groove, one end of the fixing screw extends into the limiting groove, and the fixing ring is connected to the cleaning box through a connecting rod.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a water pump with self-cleaning function, which has the following beneficial effects: 1. A self-cleaning water pump, which uses a turbine blade to drive the turbine blade to rotate during the operation of the pump body and the water delivery process, thereby providing a power source for self-cleaning.

[0015] 2. This self-cleaning water pump, through a drive assembly and a filter assembly, enables the turbine blades to rotate. The drive assembly drives the filter assembly to rotate, thereby filtering the water entering the pump body. This prevents large debris from entering the pump and damaging the turbine blades, thus affecting the normal operation of the pump. At the same time, the rotating filter assembly prevents debris from accumulating in the same place, causing blockage and affecting the normal water intake of the pump body.

[0016] 3. This water pump with self-cleaning function can scrape off large debris accumulated on the filter component through the cleaning component, so as to avoid clogging of the filter component and affect the flow rate of water through the filter screen.

[0017] 4. This self-cleaning water pump, through the sewage discharge component, enables sewage discharge without stopping the water pump body, avoiding the long-term accumulation of large-volume debris scraped off by the cleaning component, which would block the normal operation of the filter component. Attached Figure Description

[0018] Figure 1This is a perspective view of the present invention.

[0019] Figure 2 This is a cross-sectional view of the cleaning box of the present invention.

[0020] Figure 3 for Figure 2 Enlarged view of a portion of region A in the middle.

[0021] Figure 4 for Figure 2 Enlarged view of a portion of region B in the middle.

[0022] Figure 5 The three-dimensional cleaning box of the present invention Figure 1 .

[0023] Figure 6 The three-dimensional cleaning box of the present invention Figure 2 .

[0024] Figure 7 This is a cross-sectional view of the sewage discharge component of the present invention.

[0025] Figure 8 for Figure 7 Enlarged view of a portion of region C.

[0026] In the diagram: 1. Pump body, 2. Cleaning box, 3. Sealing plate, 4. Inlet, 5. Outlet, 6. Fixed bearing, 7. Connecting shaft, 8. Drive wheel, 9. Filter disc, 10. Fixed rod, 11. Support bearing, 12. Rotating shaft, 13. Drive wheel, 14. Drive belt, 15. Filter opening, 16. Sealing baffle, 17. First sealing ring groove, 18. Second sealing ring groove, 19. Sealing gasket, 20. Collection box, 21. Cleaning scraper, 22. Cleaning flexible plate, 23. Collection port, 24. Upper drain pipe, 25. Threaded connection sleeve, 26. Limiting ring groove, 27. 1. Rotating ring; 28. Connecting bolt; 29. ​​Limiting threaded hole; 30. Outer sealing ring groove; 31. Inner sealing ring groove; 32. Sealing washer; 33. Connecting ring groove; 34. Inner connecting hole; 35. Outer connecting hole; 36. Backwash pipe; 37. Support rod; 38. Sealing head; 39. Sealing sleeve; 40. Connecting ring groove; 41. Connecting protrusion; 42. Lower drain pipe; 43. Connecting threaded head; 44. Connecting threaded hole; 45. Drain solenoid valve; 46. Fixing ring; 47. Fixing screw hole; 48. Fixing screw; 49. Limiting groove; 50. Connecting rod; 51. Turbine fan blade. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0030] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 A self-cleaning water pump includes a pump body 1 and a cleaning tank 2 connected to the inlet of the pump body 1. Specifically, a first connecting flange is welded to the inlet of the pump body 1, and a second connecting flange is welded to the cleaning tank 2. The first and second connecting flanges are detachably fixed together by bolts, and a rubber gasket is provided between the first and second connecting flanges. The cleaning tank 2 is used to filter the liquid entering the pump body 1, removing large-volume impurities from the liquid to prevent them from entering the pump body 1 and damaging the fan blades, thus affecting the normal operation of the pump. The cleaning tank 2 has an inlet 4 and an outlet 5. The outlet 5 is connected to the inlet of the pump body 1, and the inlet 4 is connected to an external liquid source. When the pump is working, the external liquid source enters the cleaning tank 2 through the inlet 4, is filtered and cleaned in the cleaning tank 2, and is then transported to the pump body 1 through the outlet 5, thus realizing the transportation of the liquid. The cleaning box 2 is a hollow cube structure with one open side. A sealing plate 3 is detachably fixed to the opening of the cleaning box 2 by bolts, so that the opening of the cleaning box 2 is sealed by the sealing plate 3, and at the same time, it is easy to open the sealing plate 3 to maintain the inside of the cleaning box 2.

[0031] A turbine blade 51 is connected inside the water outlet 5, enabling the water pump body 1 to operate when energized. When liquid passes through the water outlet 5, the water flow drives the turbine blade 51 to rotate. Specifically, several fixing rods 10 are welded to or detachably fixed to the inner wall of the water outlet 5 via bolts, connecting the fixing rods 10 inside the water outlet 5. Support bearings 11 are welded to or detachably fixed to the fixing rods 10 via bolts, connecting the support bearings 11 to the water outlet 5 via the fixing rods 10. The blade angle of the turbine blade 51 is adapted to the direction of the water flow into the pump. A rotating shaft 12 is interference-fitted onto the support bearing 11, connecting the rotating shaft 12 to the support bearing 11 and allowing it to rotate within the water outlet 5. The turbine blade 51 is detachably fixed to the rotating shaft 12 via bolts, connecting the turbine blade 51 to the rotating shaft 12. Thus, the water flow through the water outlet 5 drives the turbine blade 51 to rotate, which in turn drives the rotating shaft 12 to rotate.

[0032] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The turbine blades 51 are connected to a drive assembly, which causes the water flow to rotate the turbine blades 51, which in turn drives the drive assembly. The drive assembly includes a drive wheel 13, a transmission wheel 8, and a transmission belt 14. The drive wheel 13 is detachably fixed to the rotating shaft 12 by bolts, allowing both to rotate simultaneously. The transmission wheel 8 is detachably fixed to the filter assembly by bolts, enabling both to rotate simultaneously. The outer diameter of the transmission wheel 8 is larger than that of the drive wheel 13, achieving speed reduction and torque increase transmission to ensure stable low-speed operation of the filter assembly. The drive wheel 13 and the transmission wheel 8 are connected by the transmission belt 14, so that the rotation of the drive wheel 13 drives the transmission wheel 8 to rotate via the transmission belt 14, thus achieving simultaneous rotation of the drive assembly and the filter assembly.

[0033] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The cleaning tank 2 is equipped with a filter assembly for filtering the liquid source, removing large-volume impurities. The filter assembly includes a filter disc 9, a filter screen, a sealing baffle 16, and a sealing gasket 3219. A fixed bearing 6 is detachably and bolted to the inner wall of the cleaning tank 2, connecting the fixed bearing 6 to the inner wall. A connecting shaft 7 is interference-fitted to the fixed bearing 6, allowing the connecting shaft 7 to rotate relative to the fixed bearing 6. The filter disc 9 is detachably and bolted to the connecting shaft 7, connecting the filter disc 9 to the connecting shaft 7, and then to the cleaning tank 2, allowing the filter disc 9 to rotate relative to the cleaning tank 2. The filter disc 9 has several filter openings 15, and a filter screen is placed within each of these openings, allowing the liquid entering the cleaning tank 2 to be filtered through the filter screen within the openings 15, removing large-volume impurities. The filter screen has a gradually increasing mesh size from the edge to the inside, allowing it to filter debris of different sizes in designated areas and preventing clogging. A sealing baffle 16 is welded to the inner wall of the cleaning chamber 2, ensuring a secure connection between the baffle 16 and the inner wall. A water outlet 5 is located on the cleaning chamber 2 corresponding to the sealing baffle 16, ensuring that liquid flowing from the outlet 5 must pass through the filter screen on the filter disc 9. A first sealing ring groove 17 is formed on the end face of the sealing baffle 16 near the filter disc 9, and a second sealing ring groove 18 is formed on the end face of the filter disc 9 near the sealing baffle 16. A sealing gasket 3219 is engaged in the first sealing ring groove 17 and the second sealing ring groove 18, so that the sealing gasket 3219 is engaged and limited by the first sealing ring groove 17 and the second sealing ring groove 18, preventing the sealing gasket 3219 from detaching from the filter disc 9 and the sealing baffle 16. Thus, the sealing gasket 3219 seals the gap between the filter disc 9 and the sealing baffle 16, realizing dynamic rotational sealing and preventing liquid from entering or leaving the gap between the filter disc 9 and the sealing baffle 16, thereby affecting the comprehensive filtration of the liquid flowing out from the water outlet 5. The drive assembly is connected to the filter assembly. Specifically, the drive wheel 8 is detachably fixed to the connecting shaft 7 by bolts, so that the drive wheel 8 and the connecting shaft 7 are connected together and rotate simultaneously. Thus, the water flow from the outlet hole 5 drives the turbine fan blade 51 to rotate, the turbine fan blade 51 drives the rotating shaft 12 and the drive wheel 13 to rotate, the drive wheel 13 drives the drive wheel 8 to rotate through the transmission belt 14, and the drive wheel 8 drives the connecting shaft 7 and the filter disc 9 to rotate synchronously.

[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The bottom of the cleaning tank 2 is connected to a cleaning component for cleaning the filter assembly. This component removes large debris accumulated on the filter assembly, preventing clogging and ensuring proper water flow within the cleaning tank 2. The cleaning component includes a cleaning scraper 21 and a collection box 20. The collection box 20 is welded to the bottom of the cleaning tank 2, collecting and gathering large debris that falls from the filter disc 9. The cleaning scraper 21 is detachably and securely bolted to the upper opening of the collection box 20. A cleaning flexible plate 22 is detachably and securely bolted to the end face of the cleaning scraper 21 near the filter disc 9, connecting the cleaning flexible plate 22 to the cleaning scraper 21. The cleaning scraper 21 and the cleaning soft plate 22 are inclined, and the cleaning soft plate 22 abuts against the filter screen on the filter disc 9. This allows the cleaning scraper 21 and the cleaning soft plate 22 to clean large debris accumulated on the filter screen, preventing large debris from clogging the filter screen and affecting water flow. At the same time, the cleaning soft plate 22 reduces wear on the filter screen and extends its service life. The inclination angle of the cleaning scraper 21 is 10°-30°, ensuring that the inclination angle is not too small, which would affect the cleaning of large debris on the filter screen, and also avoids the inclination angle being too large, which would prevent the scraped large debris from falling completely into the collection box 20.

[0035] Reference Figure 1 , Figure 7 , Figure 8The cleaning box 2 at the collection box 20 has a collection port 23 inside. An upper drain pipe 24 is connected to the cleaning box 2 at the collection port 23, allowing large debris collected in the collection box 20 to accumulate outside the cleaning box 2, facilitating subsequent discharge. A drain assembly is connected to the upper drain pipe 24, allowing for manual or automatic opening to discharge debris without affecting the normal operation of the water pump body 1. The drain assembly is connected to the outlet of the water pump body 1, enabling water flow to be added for flushing when large debris is discharged, improving drainage efficiency and effectiveness. The sewage discharge assembly includes a threaded connecting sleeve 25, a sealing head 38, a rotating ring 27, a sewage discharge solenoid valve 45, a lower sewage discharge pipe 42, and a fixing ring 46. The two ends of the threaded connecting sleeve 25 are threadedly connected to one end of the upper sewage discharge pipe 24 and the lower sewage discharge pipe 42, respectively, allowing the upper sewage discharge pipe 24 and the lower sewage discharge pipe 42 to move closer to or further apart by rotating the threaded connecting sleeve 25. Specifically, one end of the threaded connecting sleeve 25 has an internal thread, and the end of the upper sewage discharge pipe 24 has an external thread. The threaded connecting sleeve 25 and the upper sewage discharge pipe 24 can be threaded together through the external and internal threads. One end of the lower sewage discharge pipe 42 extends a connecting threaded head 43, and one end of the threaded connecting sleeve 25 has a connecting threaded hole 44. The connecting threaded head 43 is threaded into the connecting threaded hole 44, thereby achieving a threaded connection between the threaded connecting sleeve 25 and the lower sewage discharge pipe 42. The outer surface of the threaded connection sleeve 25 has a hexagonal prism rotating protrusion, which facilitates the rotation of the threaded connection sleeve 25. A drive motor that meshes with the threaded connection sleeve 25 can also be connected to the bottom of the cleaning box 2, enabling the threaded connection sleeve 25 to rotate via the drive motor. The sealing head 38 is connected inside the threaded connection sleeve 25 via a support rod 37, thus connecting the sealing head 38 to the threaded connection sleeve 25. The end of the upper drain pipe 24 furthest from the cleaning box 2 is frustoconical, while the sealing head 38 is conical. This allows the sealing head 38 to be inserted into the upper drain pipe 24 when the threaded connection sleeve 25 moves relative to the upper drain pipe 24, thereby sealing the end of the upper drain pipe 24 and keeping the cleaning box 2 closed. This allows for the cleaning of debris in the lower drain pipe 42 and the threaded connection sleeve 25 without affecting the normal operation of the water pump body 1. A sealing sleeve 39 is fitted onto the outer end face of the plugging head 38, thereby increasing the sealing between the plugging head 38 and the lower drain pipe 42. Several connecting ring grooves 40 are formed on the outer surface of the plugging head 38, and several connecting protrusions 41 extend from the sealing sleeve 39. The connecting protrusions 41 engage with the connecting ring grooves 40, thereby achieving a snap-fit ​​connection between the sealing sleeve 39 and the plugging head 38 through the connecting protrusions 41 and the connecting ring grooves 40, preventing the sealing sleeve 39 from easily detaching from the plugging head 38.

[0036] Reference Figure 1 , Figure 7 , Figure 8 A rotating ring 27 is disposed outside the threaded connecting sleeve 25, allowing the rotating ring 27 to rotate relative to the threaded connecting sleeve 25. The outer surface of the threaded connecting sleeve 25 has several paired limiting ring grooves 26 and outer sealing ring grooves 30. The rotating ring 27 has several limiting threaded holes 29 corresponding to the limiting ring grooves 26. Connecting bolts 28 are threaded into the limiting threaded holes 29, with one end of the connecting bolts 28 extending into the limiting ring grooves 26. This allows the rotating ring 27 and the threaded connecting sleeve 25 to be connected and limited by the connecting bolts 28 and the limiting ring grooves 26, thus connecting the rotating ring 27 to the threaded connecting sleeve 25 and enabling the rotating ring 27 to rotate relative to the threaded connecting sleeve 25. The inner end face of the rotating ring 27 has several inner sealing ring grooves 31. Sealing gaskets 3219 are engaged within the outer sealing ring grooves 30 and the inner sealing ring grooves 31, thus securing the sealing gaskets 3219 and preventing them from detaching from the rotating ring 27 and the threaded connecting sleeve 25. Simultaneously, the sealing gaskets 3219 seal the gap between the rotating ring 27 and the threaded connecting sleeve 25, preventing liquid leakage. The outer surface of the threaded connecting sleeve 25 between the outer sealing ring grooves 30 has a connecting ring groove 33. Several internal connecting holes 34 are formed within the connecting ring grooves 33, allowing communication between the connecting ring grooves 33 and the threaded connecting sleeve 25. The rotating ring 27 has an external connecting hole 35 that communicates with the connecting ring groove 33. The external connecting hole 35 is connected to the outlet of the water pump body 1 through the backwash pipe 36, so that the backwash pipe 36 is connected to the connecting ring groove 33 and then to the inside of the threaded connection sleeve 25 through the external connecting hole 35, and is also connected to the outlet of the water pump body 1. This allows water to be delivered into the threaded connection sleeve 25 through the backwash pipe 36 when needed, improving the efficiency of removing debris from the threaded connection sleeve 25. A backwash solenoid valve is connected to the backwash pipe 36, so that the backwash pipe 36 is controlled to open and close. The backwash solenoid valve is electrically connected to a microcontroller control module assembly, so that the microcontroller control module assembly controls the power supply to the backwash solenoid valve.

[0037] Reference Figure 1 , Figure 7 , Figure 8A drain solenoid valve 45 is connected to the lower drain pipe 42, allowing the drain solenoid valve 45 to control the opening and closing of the lower drain pipe 42. The drain solenoid valve 45 is electrically connected to a microcontroller control module assembly, allowing the microcontroller control module assembly to control the opening and closing of the drain solenoid valve 45. A retaining ring 46 is sleeved on the lower drain pipe 42, allowing the retaining ring 46 to move relative to the lower drain pipe 42. The retaining ring 46 has several retaining screw holes 47, and retaining screws 48 are connected to the retaining screws 48, so that the retaining screws 48 are connected to the retaining ring 46. An axial limiting groove 49 is formed on the outer surface of the lower drain pipe 42. One end of the fixing screw 48 extends into the limiting groove 49, so that the fixing ring 46 is connected to the lower drain pipe 42 by the fixing screw 48 and the limiting groove 49, and so that the lower drain pipe 42 and the fixing ring 46 can only move up and down along the axial direction, preventing the lower drain pipe 42 from rotating when the threaded connection sleeve 25 rotates. The fixing ring 46 is detachably fixed to the cleaning box 2 by bolts through the connecting rod 50, so that the fixing ring 46 is connected to the cleaning box 2 through the connecting rod 50, thereby limiting the lower drain pipe 42 by the fixing ring 46.

[0038] In use, first, connect the water inlet 4 of the cleaning tank 2 to an external liquid source, and connect the water outlet 5 of the cleaning tank 2 to the water inlet 4 of the water pump body. Then, power on the water pump body 1 to transport the liquid from the water source. When the liquid flows through the water outlet 5, the water flow drives the turbine blades 51 to rotate. The turbine blades 51 drive the rotating shaft 12 and the drive wheel 13 to rotate. The drive wheel 13 drives the transmission wheel 8 to rotate via the transmission belt 14. The transmission wheel 8 drives the connecting shaft 7 and the filter disc 9 to rotate, thereby adjusting the area of ​​the filter screen corresponding to the water outlet 5 in real time. At the same time, the filter screen is used to filter the liquid entering the cleaning tank 2 and exiting from the water outlet 5, removing large-volume impurities from the liquid. When the filter disc 9 rotates, it passes through the cleaning scraper 21 and the cleaning soft plate 22. Large debris accumulated on the filter screen is scraped and cleaned. The large debris falls into the collection box 20 below and enters the lower drain pipe 42 and the drain assembly through the collection port 23 for collection. When cleaning the debris in the drain assembly, rotate the threaded connection sleeve 25 to insert the plug 38 into the lower drain pipe 42 to block the lower drain pipe 42. Then, open the drain solenoid valve 45 and the backwash solenoid valve to clean and discharge the debris accumulated in the drain assembly. Finally, first close the drain solenoid valve 45, then close the backwash solenoid valve, then rotate the threaded connection sleeve 25 to remove the plug 38 from the lower drain pipe 42, so that the lower drain pipe 42 is connected to the drain assembly. Finally, close the backwash solenoid valve to complete the cleaning and discharge of debris.

[0039] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For any fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning water pump, comprising a pump body (1), characterized in that, A cleaning box (2) is connected to the inlet of the water pump body (1). The cleaning box (2) has an inlet hole (4) and an outlet hole (5). The outlet hole (5) is connected to the inlet of the water pump body (1). A turbine fan blade (51) is connected inside the outlet hole (5). A drive assembly is connected to the turbine fan blade (51). A filter assembly for filtering the liquid source is connected inside the cleaning box (2). The drive assembly is connected to the filter assembly. A cleaning assembly for cleaning the filter assembly is connected to the bottom of the cleaning box (2).

2. A water pump with self-cleaning function according to claim 1, characterized in that, The inner wall of the water outlet (5) is connected to several fixed rods (10), and a support bearing (11) is connected to several fixed rods (10). A rotating shaft (12) is interference-fitted on the support bearing (11), and the turbine fan blade (51) is connected to the rotating shaft (12).

3. A water pump with self-cleaning function according to claim 2, characterized in that, The drive assembly includes a drive wheel (13), a transmission wheel (8), and a transmission belt (14). The drive wheel (13) is connected to the rotating shaft (12), the transmission wheel (8) is connected to the filter assembly, and the drive wheel (13) and the transmission wheel (8) are connected by the transmission belt (14).

4. A water pump with self-cleaning function according to claim 3, characterized in that, The filter assembly includes a filter disc (9), a filter screen, a sealing baffle (16), and a sealing gasket (32) (19). The inner wall of the cleaning box (2) is connected to a fixed bearing (6), and the fixed bearing (6) is interference-fitted with a connecting shaft (7). The filter disc (9) and the drive wheel (8) are connected to the connecting shaft (7). The filter disc (9) has several filter openings (15), and the filter screen is set inside the filter openings (15). The mesh size of the filter screen gradually increases from the outside to the inside.

5. A water pump with self-cleaning function according to claim 4, characterized in that, The sealing baffle (16) is connected to the inner wall of the cleaning box (2). The sealing baffle (16) has a first sealing ring groove (17) on the end face near the filter disc (9). The filter disc (9) has a second sealing ring groove (18) on the end face near the sealing baffle (16). The sealing gaskets (32) (19) are snapped into the first sealing ring groove (17) and the second sealing ring groove (18).

6. A water pump with self-cleaning function according to claim 4, characterized in that, The cleaning assembly includes a cleaning scraper (21) and a collection box (20). The collection box (20) is connected to the bottom of the cleaning box (2). The cleaning scraper (21) is connected to the upper opening of the collection box (20). The cleaning scraper (21) is inclined, and the inclination angle of the cleaning scraper (21) is 10°-30°. A cleaning soft plate (22) is connected to the end face of the cleaning scraper (21) near the filter disc (9). The cleaning soft plate (22) abuts against the filter screen on the filter disc (9).

7. A water pump with self-cleaning function according to claim 6, characterized in that, The cleaning box (2) at the collection box (20) has a collection port (23) inside. The cleaning box (2) at the collection port (23) is connected to an upper drain pipe (24). The upper drain pipe (24) is connected to a drain assembly. The drain assembly is connected to the outlet of the water pump body (1).

8. A water pump with self-cleaning function according to claim 7, characterized in that, The sewage discharge assembly includes a threaded connecting sleeve (25), a plug (38), a rotating ring (27), a sewage discharge solenoid valve (45), a lower sewage pipe (42), and a fixing ring (46). The two ends of the threaded connecting sleeve (25) are threadedly connected to one end of the upper sewage pipe (24) and the lower sewage pipe (42), respectively. The plug (38) is connected to the threaded connecting sleeve (25) through a fixing rod (10). The end of the lower sewage pipe (42) away from the cleaning box (2) is frustoconical. The plug (38) is conical. A sealing sleeve (39) is fitted on the outer end face of the plug (38). Several connecting ring grooves (40) are opened on the outer surface of the plug (38). Several connecting protrusions (41) extend from the sealing sleeve (39). The connecting protrusions (41) are snapped into the connecting ring grooves (40).

9. A water pump with self-cleaning function according to claim 8, characterized in that, The rotating ring (27) is disposed outside the threaded connector. The outer surface of the threaded connector has several paired limiting ring grooves (26) and outer sealing ring grooves (30). The rotating ring (27) has several threaded holes corresponding to the limiting ring grooves (26). Connecting bolts (28) are threaded into the threaded holes, with one end of the connecting bolts (28) extending into the limiting ring grooves (26). The inner end face of the rotating ring (27) has several inner sealing ring grooves (31). A sealing gasket (32) (19) is snapped into the outer sealing ring groove (30) and the inner sealing ring groove (31). A connecting ring groove (33) is provided between the outer sealing ring grooves (30). A plurality of internal connecting holes (34) are provided in the connecting ring groove (33) to connect the internal parts of the threaded connectors. An external connecting hole (35) is provided on the rotating ring (27) to connect with the connecting ring groove (33). The external connecting hole (35) is connected to the outlet of the water pump body (1) through the backwash pipe (36).

10. A water pump with self-cleaning function according to claim 8, characterized in that, The drain solenoid valve (45) is connected to the lower drain pipe (42). The fixing ring (46) is sleeved on the lower drain pipe (42). The fixing ring (46) has several fixing screw holes (47). Fixing screws (48) are connected in the fixing screw holes (47). The outer surface of the lower drain pipe (42) has an axial limiting groove (49). One end of the fixing screw (48) extends into the limiting groove (49). The fixing ring (46) is connected to the cleaning box (2) through the fixing rod (10).

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