Guiding type self-cleaning sewage pump

Abstract

The invention discloses a guide type self-cleaning sewage pump, and belongs to the technical field of sewage pumps. In order to solve the problem that existing equipment is easily blocked by large pollutants during use, the following technical scheme is provided: the sewage pump comprises a sewage pump main body, a base is arranged at the bottom of the sewage pump main body, and a liquid outlet end flange of the sewage pump main body is connected with a sewage discharge pipe; the base comprises a supporting assembly, a backflow assembly, a turbulent flow piece, an auxiliary assembly, a water permeable cover, a spray washing assembly, stirring blades and a scraping piece. According to the sewage pump, the backflow assembly is arranged in the base of the sewage pump body, then sewage output by the pump is subjected to partial backflow, then the sewage is jetted to the periphery of the base through the turbulent flow pieces, and the jetted sewage disturbs the sewage flowing towards the base; therefore, large pollutants are prevented from making contact with the base along with water flow as much as possible, a water flow passing notch in the base is prevented from being blocked, and the inner wall of the water permeable cover is cleaned with the help of confluent sewage by means of a spray-washing assembly.

Description

Technical Field

[0001] The invention relates to the technical field of sewage pumps, in particular to a guided self-cleaning sewage pump. Background Art

[0002] A sewage pump is a pump product in which the pump and the motor are connected and submerged in the liquid to work at the same time. Compared with general horizontal pumps or vertical sewage pumps, the sewage pump has a compact structure and occupies a small area.

[0003] Among the existing disclosed sewage pumps, there is a Chinese patent with the announcement number CN114962348B, which discloses a self-cleaning sewage pump, including a pump body, a pumping chamber is formed at the lower part of the pump body, a pumping paddle connected to a motor is provided in the pumping chamber, a liquid inlet is provided at the lower part of the pumping chamber, a liquid outlet is provided on the side wall of the pumping chamber, and a sewage cleaning device is provided on the pump body.

[0004] Although the technical solution described above can conveniently clean the inner wall of the liquid inlet chamber of the pump with a sewage cleaning device, it still has the following defects during actual use: the equipment needs to be cleaned manually after it completes the sewage discharge work, which not only increases the cleaning burden of the staff but also easily causes the equipment to be blocked due to untimely cleaning; when the equipment absorbs sewage, large pollutants such as fiber pollutants or plastic bags in the sewage will approach the liquid inlet position of the equipment with the movement of water flow. Even if a grille or filter structure is provided at the liquid inlet of the equipment to block it, these large pollutants can easily block the grille or filter structure. Once blocked, the amount of sewage absorbed by the liquid inlet will be reduced, affecting the sewage discharge efficiency of the equipment. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a guided self-cleaning sewage pump, which provides a reflux component in the base of the sewage pump body to partially reflux the sewage discharged by the pump, and discharge it through various spoilers. The sewage discharged by each spoiler is sprayed around the base, and the sprayed sewage disturbs the sewage flowing toward the base, thereby avoiding large pollutants from contacting the base with the water flow as much as possible, preventing the water flow gap on the base from being blocked, and ensuring the operating efficiency of the equipment. It is supplemented by a spray cleaning component to automatically clean the inner wall of the permeable cover with the help of the converged sewage, and the pollutants after cleaning are discharged with the sewage, reducing the burden of manual cleaning, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: The top of the drainage pipe is connected with the drainage pipe, and the bottom of the drainage pipe is connected with the drainage pipe. The drainage pipe is connected with the drainage pipe by the drainage channel. The drainage pipe is connected with the drainage channel by the drainage channel.

[0007] As a further solution of the present invention, the support assembly includes a bottom ring, a top ring and a reinforcing rib, wherein the top ring is located above the bottom ring and is bolted to the bottom end of the sewage pump body, and the reinforcing ribs include multiple ones, which are arranged between the bottom ring and the top ring along the circumferential direction, so that the support assembly forms a whole, and the gap between two adjacent reinforcing ribs is used to serve as a water flow gap.

[0008] As a further solution of the present invention, the reflux assembly includes a hollow ring, a drainage pipe and a diversion pipe, wherein the hollow ring is located on the inner wall of multiple reinforcing ribs, the drainage pipe and the diversion pipe are both installed on the bottom shell wall of the hollow ring and are interconnected with the inner cavity of the hollow ring, the top end of the drainage pipe is connected to the sewage pipe for draining sewage in the sewage pipe, and a control valve is provided on the diversion pipe.

[0009] As a further solution of the present invention, the spoiler includes a plurality of spoilers, each of which is arranged on the inner side of the corresponding reinforcing rib, and the spoiler includes a U-shaped hollow plate located below the hollow ring, and the top of the U-shaped hollow plate is connected to the hollow ring through a conduit, and two spoiler tube groups are provided on the front shell wall of the U-shaped hollow plate, and each spoiler tube group includes three spoiler tubes arranged longitudinally linearly; The spoiler pipe includes a pipe fixedly connected to the U-shaped hollow plate, the bottom end of the pipe passes through the corresponding reinforcing rib plate and is movably connected to the magnetic plate.

[0010] As a further solution of the present invention, the auxiliary component includes a base plate fixedly connected to the inner ring of the bottom ring, a plurality of sliding grooves are opened on the base plate along the circumferential direction, a moving rod is slidably connected in the sliding groove, the outer end of the moving rod is fixedly connected to the base foot, a screw rod is rotatably connected at the center of the circle of the base plate, an adjusting disk is movably connected to the screw rod, and a plurality of support rods are movably connected to the peripheral wall of the adjusting disk along the circumferential direction, and the bottom end of each support rod is movably connected to the corresponding moving rod through a pin shaft.

[0011] As a further embodiment of the present invention, a placement groove is provided on the top shell wall of the top ring, the water-permeable cover is placed in the placement groove, and a plurality of guide grooves are provided on the inner wall of the water-permeable cover along the circumferential direction. A hole is provided at the center of the bottom of the water-permeable cover, and the bottom end of the shaft passes through the hole. The stirring blade is located at the bottom end of the shaft, and the scraping member includes a positioning ring sleeved on the shaft. A plurality of scraping arms are arranged on the outer shell wall of the positioning ring along the circumferential direction. The scraping arms are used to clean the bottom outer wall of the water-permeable cover.

[0012] As a further solution of the present invention, the spray cleaning assembly includes an inner grooved ring threadedly connected to the shaft, a loading ring is fixedly connected to the outer ring shell wall of the inner grooved ring by bolts, an annular cover is integrally provided on the outer ring shell wall of the loading ring, a plurality of hollow plates are provided on the outer ring shell wall along the circumferential direction, the outer ends of the plurality of hollow plates are commonly connected to a water spray ring, and a plurality of water spray ports are opened on the outer ring shell wall of the water spray ring along the circumferential direction.

[0013] As a further solution of the present invention, a plurality of guide blocks are provided on the outer shell wall of the water spray ring along the circumferential direction, the guide blocks are in sliding contact with the guide grooves, and the annular cover, the hollow plate and the inner cavity of the water spray ring are connected to each other.

[0014] As a further solution of the present invention, a circular hole is opened on the bottom shell wall of the water-permeable cover, and a telescopic tube is provided in the circular hole. The top end of the telescopic tube is set on the corresponding hollow plate, and the bottom end of the telescopic tube is installed on the diversion pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting a reflux component in the base of the sewage pump body, part of the sewage discharged by the pump is refluxed and discharged by various spoilers. The sewage discharged by each spoiler is sprayed around the base. The sprayed sewage disturbs the sewage flowing toward the base, thereby avoiding large pollutants from contacting the base with the water flow as much as possible, preventing the water flow gap on the base from being blocked, and ensuring the operating efficiency of the equipment.

[0016] A placement groove is provided on the top of the supporting assembly in the base to facilitate the placement of the water-permeable cover. When the base and the sewage pump body are assembled, the water-permeable cover can be stably assembled by means of the contact between the two, thereby realizing convenient assembly of the equipment.

[0017] The spray assembly located inside the permeable cover can be threadedly connected to the shaft of the impeller in the sewage pump body. When the sewage pump body is running, the rotation of the shaft drives the reciprocating lifting and lowering movement of the spray assembly. The spray assembly is connected to the return assembly. Under the action of the control valve, when the sewage in the return assembly enters the spray assembly, the sewage spraying can realize automatic cleaning of the inner cavity wall of the permeable cover. The cleaned pollutants are extracted and discharged together with the sewage, reducing the burden of manual cleaning in the later stage.

[0018] The bottom end of the shaft passes through the bottom shell wall of the water-permeable cover and is provided with a scraper and a stirring blade. The shaft drives the scraper and the stirring blade to move synchronously. The stirring blade can further drive the flow of sewage during movement, thereby breaking up the deposited pollutants and making them float in the sewage, which is convenient for their discharge. The scraper scrapes and cleans the bottom shell wall of the water-permeable cover to prevent pollutants from adhering to it and causing blockage, thereby further ensuring the sewage discharge efficiency of the equipment.

[0019] An auxiliary component is added to the base, and the sewage pump body is opened before it enters the sewage, so as to improve the bottom support effect of the equipment, avoid the problem of the equipment tipping over when it is put into use, and further improve the convenience of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a guided self-cleaning sewage pump; Figure 2 for Figure 1 Schematic diagram of the base structure; Figure 3 for Figure 2 Schematic diagram of the structure viewed from above; Figure 4 for Figure 2 Schematic diagram of the support component structure Figure 1 ; Figure 5 for Figure 2 Schematic diagram of the support component structure Figure 2 ; Figure 6 for Figure 5 Schematic diagram of the spoiler structure; Figure 7 for Figure 6 A schematic diagram of the enlarged local structure at point A; Figure 8 for Figure 4 Schematic diagram of the auxiliary component structure; Figure 9 for Figure 8 Schematic diagram of the structure viewed from above; Figure 10 for Figure 2 Schematic diagram of the structure of the water-permeable cover and the spray-washing assembly; Figure 11 for Figure 10 Schematic diagram of the upward-looking structure.

[0021] In the figure: 1. Sewage pump body; 2. Base; 21. Support assembly; 22. Return assembly; 221. Hollow ring; 222. Drainage pipe; 223. Diverter pipe; 23. Spoiler; 231. U-shaped hollow plate; 232. Spoiler pipe; 2321. Pipe; 2322. Magnetic plate; 24. Auxiliary assembly; 241. Base plate; 242. Moving rod; 243. Foundation foot; 244. Support rod; 245. Adjustment disk; 246. Screw; 25. Water-permeable cover; 26. Spray assembly; 261. Inner groove ring; 262. Loading ring; 263. Annular cover; 264. Hollow plate; 265. Water spray ring; 266. Telescopic pipe; 27. Stirring blade; 28. Scraping piece; 3. Sewage pipe. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 3 In an embodiment of the present invention, a guided self-cleaning sewage pump includes a sewage pump body 1, a base 2 is provided at the bottom of the sewage pump body 1, and a sewage pipe 3 is connected to the liquid outlet flange of the sewage pump body 1. The configuration of the base 2 is used for the stable placement of the sewage pump body 1 on the one hand, and for facilitating the feeding of sewage when the equipment is in operation on the other hand. The base 2 includes a support assembly 21, a backflow assembly 22, a spoiler 23, an auxiliary assembly 24, a water-permeable cover 25, a spray assembly 26, a stirring blade 27 and a scraper 28. The water-permeable cover 25 is provided to isolate larger pollutants to prevent them from entering the sewage pump body 1 and causing damage to the equipment; Among them, the support assembly 21 is located at the bottom end of the sewage pump body 1, and the backflow assembly 22, the spoiler 23 and the water-permeable cover 25 are all arranged inside the support assembly 21. The backflow assembly 22 and the spoiler 23 are mutually conductive, and the backflow assembly 22 and the sewage pipe 3 are also mutually conductive. Through the conduction between the backflow assembly 22 and the sewage pipe 3, when the sewage passes through the sewage pipe 3, part of the sewage can be returned to the backflow assembly 22, and the mutual conduction between the backflow assembly 22 and the spoiler 23 can release the sewage in the backflow assembly 22; The bottom end of the shaft of the impeller in the sewage pump body 1 passes through the bottom shell wall of the water-permeable cover 25 and is provided with a scraping member 28 for scraping the bottom shell wall of the water-permeable cover 25 and a stirring blade 27 for disturbing the sewage. The scraping member 28 and the stirring blade 27 move synchronously with the rotation of the shaft. The scraping member 28 can clean the pollutants attached to the bottom shell wall of the water-permeable cover 25 during the movement. The stirring blade 27 stirs the sewage during the rotation, causing the deposited pollutants to float, thereby facilitating the pumping of the pollutants and the sewage together. The interior of the permeable cover 25 is also provided with a spray assembly 26 for spraying the inner wall. The spray assembly 26 is movably connected to the shaft, and the spray assembly 26 and the return assembly 22 are also connected to each other. After the sewage in the return assembly 22 enters the spray assembly 26, the sewage will be sprayed on the inner wall of the permeable cover 25, reducing the burden of manual cleaning. The auxiliary assembly 24 is arranged at the bottom of the support assembly 21 to improve the stability of the equipment placement.

[0023] See also Figure 4-Figure 5 In an embodiment of the present invention, the support assembly 21 includes a bottom ring, a top ring and a reinforcing rib, wherein the top ring is located above the bottom ring and is bolted to the bottom end of the sewage pump body 1. The reinforcing ribs include multiple ones, which are arranged between the bottom ring and the top ring along the circumferential direction, so that the support assembly 21 forms a whole, and the gap between two adjacent reinforcing ribs is used to serve as a water flow gap. The setting range of the reinforcing ribs is three to nine, and six are used in this embodiment.

[0024] See also Figure 4-Figure 7 In the embodiment of the present invention, the reflux assembly 22 includes a hollow ring 221, a drainage pipe 222 and a diversion pipe 223, wherein the hollow ring 221 is located on the inner wall of the plurality of reinforcing ribs, the drainage pipe 222 and the diversion pipe 223 are both installed on the bottom shell wall of the hollow ring 221 and are in communication with the inner cavity of the hollow ring 221. The top end of the drainage pipe 222 is connected to the sewage pipe 3 for draining sewage in the sewage pipe 3. A control valve is provided on the diversion pipe 223. The drainage pipe 222 can guide part of the sewage in the sewage pipe 3 into the hollow ring 221 , and the control valve provided on the diversion pipe 223 is used to control the sewage passing through the diversion pipe 223 .

[0025] The spoilers 23 include a plurality of spoilers 23, which are respectively arranged on the inner sides of the corresponding reinforcing ribs. The number of spoilers 23 is set in a range of three to nine. In this embodiment, six spoilers are used. The spoiler 23 includes a U-shaped hollow plate 231 located below the hollow ring 221. The top of the U-shaped hollow plate 231 is connected to the hollow ring 221 through a conduit. Two spoiler tube groups are provided on the front shell wall of the U-shaped hollow plate 231. Each spoiler tube group includes three spoiler tubes 232 arranged longitudinally and linearly. When the control valve is closed, the sewage entering the hollow ring 221 automatically enters each spoiler 23. The sewage entering the spoiler 23 first enters the U-shaped hollow plate 231 and is then discharged from each spoiler 23 in the spoiler tube group. After the sewage is discharged from the spoiler 23, it impacts the water flow around the base 2, thereby preventing large pollutants from sticking to the base 2 and causing the water flow gap to be blocked. The spoiler tube 232 includes a pipe 2321 fixedly connected to the U-shaped hollow plate 231. The bottom end of the pipe 2321 passes through the corresponding reinforcing ribs and is movably connected to a magnetic plate 2322. The setting of the magnetic plate 2322 can refer to the existing odor-proof sewage, which can prevent the sewage from flowing back to the inside of the pipe 2321 when the equipment is placed in the sewage.

[0026] See also Figure 4 and Figure 8-Figure 9 In the embodiment of the present invention, the auxiliary component 24 includes a base plate 241 fixedly connected to the inner ring of the bottom ring. A plurality of sliding grooves are opened on the base plate 241 along the circumferential direction. A moving rod 242 is slidably connected in the sliding groove. The moving rod 242 is composed of a rod body and a moving seat. The moving seat is integrally provided at the bottom of the rod body, and the top of the moving seat passes through the sliding groove. The moving seat and the sliding groove are slidably connected, thereby ensuring the stability of the displacement adjustment of the moving rod 242. The outer end of the moving rod 242 is fixedly connected to the base foot 243. The center of the base plate 241 is rotatably connected to a screw rod 246. The screw rod 246 is threadedly connected to the adjustment disk 245. The top and bottom outer surfaces of the screw rod 246 are threaded. When adjusting the adjustment disk 245, it can be quickly raised or lowered by simply leaving the threaded area. The peripheral wall of the adjustment disk 245 is integrally provided with a plurality of protrusions along the circumferential direction. Each protrusion is movably connected to a support rod 244. The bottom end of each support rod 244 is movably connected to the corresponding movable seat via a pin. When the screw rod 246 is adjusted, the adjustment disk 245 threadedly connected thereto moves. When the adjustment disk 245 leaves the threaded area, the adjustment disk 245 can be quickly raised and lowered. When the adjustment disk 245 is raised and lowered, the corresponding moving rods 242 are driven by each support rod 244 to drive the corresponding base foot 243 for telescopic adjustment. After the adjustment disk 245 is raised and lowered, when it contacts another set of threads as the screw rod 246 moves, the adjustment disk 245 contacts the threads, thereby limiting and locking the adjusted adjustment disk 245.

[0027] See also Figure 2 and Figure 4 In the embodiment of the present invention, a placement groove is provided on the top shell wall of the top ring, and the water-permeable cover 25 is placed in the placement groove. A plurality of guide grooves are provided on the inner wall of the water-permeable cover 25 along the circumferential direction. A hole is provided at the center of the bottom circle of the water-permeable cover 25, and the bottom end of the shaft passes through the hole. A plurality of passage holes for sewage passage are also provided on the bottom shell wall of the water-permeable cover 25. The number of guide grooves is set in the range of two to four. In this embodiment, three are used. See also Figure 3 and Figure 10-11 In the embodiment of the present invention, the stirring blade 27 is located at the bottom end of the shaft, and the scraping member 28 includes a positioning ring sleeved on the shaft, and a plurality of scraping arms are provided on the outer ring wall of the positioning ring along the circumferential direction. The scraping arms are used to clean the bottom outer wall of the water-permeable cover 25. The number of scraping arms is set in the range of two to six. In this embodiment, three are used, and the scraping arms are assembled on the outer ring wall of the positioning ring by bolts, which is convenient for disassembly and assembly.

[0028] The spray assembly 26 includes an inner ring 261 threadedly connected to the shaft. A loading ring 262 is fixedly connected to the outer shell of the inner ring 261 via bolts. The outer shell of the inner ring 261 is provided with a step. The loading ring 262 is sleeved on the outer shell of the inner ring 261 and is located below the step. The loading ring 262 and the step are fixedly connected by bolts. An annular cover 263 is integrally provided on the outer ring shell wall of the loading ring 262. A plurality of notches are opened on the outer ring shell wall of the annular cover 263 along the circumferential direction. A hollow plate 264 located on the outer ring shell wall of the annular cover 263 is welded to the outside of each notch. The outer ends of the plurality of hollow plates 264 are commonly connected to a water spray ring 265. A plurality of water spray ports are opened on the outer ring shell wall of the water spray ring 265 along the circumferential direction.

[0029] A plurality of guide blocks are further provided on the outer shell wall of the water spray ring 265 along the circumferential direction. The guide blocks are in sliding contact with the guide grooves, thereby providing a guide for the water spray ring 265. When the shaft rotates, the inner groove ring 261 drives the water spray ring 265 to move up and down inside the water permeable cover 25. The annular cover 263, the hollow plate 264 and the inner cavity of the water spray ring 265 are interconnected, and sewage is sprayed out from the water spray ring 265. When the water spray ring 265 moves up and down, efficient cleaning of the inner wall of the water permeable cover 25 is achieved.

[0030] A circular hole is provided on the bottom shell wall of the water-permeable cover 25, and a telescopic tube 266 is provided in the circular hole. The top end of the telescopic tube 266 is provided on the corresponding hollow plate 264, and the bottom end of the telescopic tube 266 is installed on the diversion pipe 223. The setting of the telescopic tube 266 is used to ensure that sewage can still be supplied to the water spray ring 265 when it moves up and down.

[0031] The working principle of the present invention is as follows: before the equipment is used, the base 2 and the sewage pipe 3 are respectively assembled to the corresponding positions of the sewage pump body 1 to realize the assembly between the various structures of the equipment. Then, the staff adjusts the screw rod 246 of the auxiliary component 24 in the base 2 to make the adjustment disk 245 threadedly connected thereto move downward. When the adjustment disk 245 moves downward, the multiple support rods 244 movably connected thereto push the corresponding moving rods 242 to extend outward, and the moving rods 242 drive the basic feet 243 to move synchronously, thereby improving the support effect of the bottom of the equipment; After the auxiliary component 24 is adjusted, the device is placed in the sewage to be pumped out. When the device is placed, the base 2 needs to ensure that it is stably placed at the bottom of the sewage. After the equipment is placed, the sewage pump body 1 is started through the external controller body to realize the pumping and drainage of sewage. When the sewage pump body 1 is running, the impeller provided therein is driven to rotate, thereby pumping the sewage into the sewage pipe 3 for discharge; When the impeller rotates, its shaft moves synchronously, and the stirring blade 27, scraping member 28 and spray assembly 26 located on the shaft move. The stirring blade 27 and the scraping member 28 rotate synchronously. When the scraping member 28 rotates, it scrapes and cleans the bottom shell wall of the water-permeable cover 25. When the stirring blade 27 rotates, it stirs the sewage, causing the sediment in the sewage to float, making it easier for the pollutants to be pumped out with the flow of sewage. The spray assembly 26 moves up and down when the shaft rotates. When the pumped sewage enters the sewage pipe 3, part of the sewage flows back into the hollow ring 221 from the drainage pipe 222 in the return assembly 22. When the control valve on the diversion pipe 223 of the sewage entering the hollow ring 221 is in a closed state, the sewage can only enter the various spoilers 23. Under the diversion effect of the U-shaped hollow plate 231, the sewage entering the spoiler 23 is ejected from the corresponding spoiler pipes 232 in each spoiler pipe group. When the sewage is ejected from the spoiler pipe 232, the ejected sewage will flow around the base 2. At this time, the pollutants flowing toward the base 2 as the sewage approaches the base 2 are disturbed by the ejected sewage, thereby preventing large pollutants from contacting the base 2 and causing the water flow gap on the support assembly 21 to be blocked; After the equipment has been running for a period of time, the control valve on the shunt pipe 223 is opened through the external controller body. At this time, the sewage part that flows back into the hollow ring 221 enters the telescopic tube 266 through the shunt pipe 223, and then enters the corresponding hollow plate 264 of the spray assembly 26. When the hollow plate 264, the annular cover 263 and the inner cavity of the water spray ring 265 are connected to each other, the sewage is finally sprayed out from the various water nozzles on the water spray ring 265. At this time, the sprayed sewage washes and cleans the inner wall of the permeable cover 25, and the pollutants washed down are sucked out by the sewage.

[0032] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A guided self-cleaning sewage pump, comprising a sewage pump body (1), characterized in that: The bottom of the sewage pump body (1) is provided with a base (2), and the liquid outlet flange of the sewage pump body (1) is connected to the sewage pipe (3), and the base (2) includes a support component (21), a return component (22), a spoiler (23), an auxiliary component (24), a water-permeable cover (25), a spray component (26), a stirring blade (27) and a scraper (28), wherein the support component (21) is located at the bottom of the sewage pump body (1), the return component (22), the spoiler (23) and the water-permeable cover (25) are all arranged inside the support component (21), and the return component (22) and the spoiler (23) are mutually guided. The backflow assembly (22) and the sewage pipe (3) are also mutually conductive. The bottom end of the shaft of the impeller in the sewage pump body (1) passes through the bottom shell wall of the water-permeable cover (25), and is provided with a scraping member (28) for scraping the bottom shell wall of the water-permeable cover (25) and a stirring blade (27) for disturbing the sewage. The inside of the water-permeable cover (25) is also provided with a spray assembly (26) for spraying the inner wall. The spray assembly (26) and the shaft are movably connected. The spray assembly (26) and the backflow assembly (22) are also mutually conductive. The auxiliary assembly (24) is provided at the bottom of the support assembly (21) to improve the stability of the equipment placement.

2. A guided self-cleaning sewage pump according to claim 1, characterized in that: The support assembly (21) includes a bottom ring, a top ring and a reinforcing rib, wherein the top ring is located above the bottom ring and is bolted to the bottom end of the sewage pump body (1), and the reinforcing rib includes a plurality of reinforcing ribs, which are arranged between the bottom ring and the top ring along the circumferential direction, so that the support assembly (21) forms a whole, and the gap between two adjacent reinforcing ribs is used to serve as a water flow gap.

3. A guided self-cleaning sewage pump according to claim 2, characterized in that: The reflux assembly (22) comprises a hollow ring (221), a drainage pipe (222) and a diversion pipe (223), wherein the hollow ring (221) is located on the inner wall of a plurality of reinforcing ribs, the drainage pipe (222) and the diversion pipe (223) are both installed on the bottom shell wall of the hollow ring (221) and are in communication with the inner cavity of the hollow ring (221), the top end of the drainage pipe (222) is connected to the sewage pipe (3) for draining sewage in the sewage pipe (3), and a control valve is provided on the diversion pipe (223).

4. A guided self-cleaning sewage pump according to claim 3, characterized in that: The spoiler (23) includes a plurality of spoilers, each of which is arranged on the inner side of the corresponding reinforcing ribs. The spoiler (23) includes a U-shaped hollow plate (231) located below the hollow ring (221). The top of the U-shaped hollow plate (231) is connected to the hollow ring (221) through a conduit. Two spoiler tube groups are provided on the front shell wall of the U-shaped hollow plate (231). Each spoiler tube group includes three spoiler tubes (232) arranged longitudinally and linearly. The spoiler tube (232) comprises a pipe (2321) fixedly connected to the U-shaped hollow plate (231); the bottom end of the pipe (2321) passes through the corresponding reinforcing ribs and is movably connected to the magnetic plate (2322).

5. A guided self-cleaning sewage pump according to claim 2, characterized in that: The auxiliary component (24) includes a base plate (241) fixedly connected to the inner ring of the bottom ring, a plurality of sliding grooves are opened on the base plate (241) along the circumferential direction, a moving rod (242) is slidably connected in the sliding groove, the outer end of the moving rod (242) is fixedly connected to the base foot (243), a screw rod (246) is rotatably connected at the center of the circle of the base plate (241), an adjusting disk (245) is movably connected to the screw rod (246), a plurality of support rods (244) are movably connected to the peripheral wall of the adjusting disk (245) along the circumferential direction, and the bottom end of each support rod (244) is movably connected to the corresponding moving rod (242) through a pin shaft.

6. A guided self-cleaning sewage pump according to claim 3, characterized in that: A placement groove is provided on the top shell wall of the top ring, the water-permeable cover (25) is placed in the placement groove, and a plurality of guide grooves are provided on the inner wall of the water-permeable cover (25) along the circumferential direction, a hole is provided at the center of the bottom circle of the water-permeable cover (25), and the bottom end of the shaft passes through the hole; The stirring blade (27) is located at the bottom end of the shaft, and the scraping member (28) includes a positioning ring sleeved on the shaft, and a plurality of scraping arms are provided on the outer shell wall of the positioning ring along the circumferential direction, and the scraping arms are used to clean the bottom outer wall of the water-permeable cover (25).

7. A guided self-cleaning sewage pump according to claim 6, characterized in that: The spray assembly (26) includes an inner grooved ring (261) threadedly connected to the shaft, a loading ring (262) is fixedly connected to the outer ring shell wall of the inner grooved ring (261) by bolts, an annular cover (263) is integrally provided on the outer ring shell wall of the loading ring (262), a plurality of hollow plates (264) are provided on the outer ring shell wall of the annular cover (263) along the circumferential direction, the outer ends of the plurality of hollow plates (264) are commonly connected to a water spray ring (265), and a plurality of water spray ports are opened on the outer ring shell wall of the water spray ring (265) along the circumferential direction.

8. A guided self-cleaning sewage pump according to claim 7, characterized in that: A plurality of guide blocks are also provided on the outer shell wall of the water spray ring (265) along the circumferential direction, and the guide blocks are in sliding contact with the guide grooves. The annular cover (263), the hollow plate (264) and the inner cavity of the water spray ring (265) are in mutual conduction.

9. A guided self-cleaning sewage pump according to claim 8, characterized in that: A circular hole is provided on the bottom shell wall of the water-permeable cover (25), and a telescopic tube (266) is provided in the circular hole. The top end of the telescopic tube (266) is provided on the corresponding hollow plate (264), and the bottom end of the telescopic tube (266) is installed on the diversion pipe (223).

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