Guiding type self-cleaning water pump

Abstract

The invention discloses a guiding type self-cleaning water pump and relates to the technical field of water pumps, the guiding type self-cleaning water pump comprises a water pump shell, an impeller cleaning assembly and a pipeline cleaning assembly.The water flow speed is changed through the gradually-decreased hole diameter of a conical speed change hole, a rapid water flow impact column is formed, and strong impact force is generated; impurities and sediments on the surfaces of the impeller blades and the impeller rear cover disc are impacted and cleaned, so that the impurities cannot stay and be attached to the impeller blades and the impeller rear cover disc, and water scale difficult to remove is prevented from being formed, a water source dispersedly flows into the water pump shell in a flow channel formed by every two adjacent impeller blades, and at the moment, water flow is guided through the flow guide blocks; water flow deflects to the surfaces of the impeller blades, so that impact force is increased, the side faces of the impeller blades are subjected to impact cleaning, the cleaning state of the surfaces of the impeller blades is kept through continuous water flow impact, the automatic cleaning function can reduce regular manual cleaning requirements, tedious manual operation is omitted, and the maintenance cost and labor input are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and more particularly to a guided self-cleaning water pump. Background Art

[0002] A water pump is a mechanical device used to transport fluids (such as water, oil, chemicals, etc.). Its main function is to convert mechanical energy into kinetic energy or pressure energy of the fluid. Water pumps are widely used in agricultural irrigation, industrial production, urban water supply, sewage treatment and other fields. During the long-term operation of the water pump, various impurities and sediments may accumulate inside and in related components. If these problems are not handled in time, they will affect the normal operation and service life of the water pump.

[0003] Existing water pumps usually consist of a pump body, an impeller, a motor, an inlet pipe and an outlet pipe. The impeller is driven to rotate by the motor. When the impeller rotates, a low-pressure area is generated in the suction chamber so that the fluid is sucked into the pump body. After the fluid enters the impeller, it is affected by the centrifugal force of the impeller blades, and the speed of the fluid increases. As the fluid speed increases, its kinetic energy is converted into pressure energy, and the pressurized fluid is guided to the outlet pipe through the extrusion chamber and finally discharged from the pump body and the outlet pipe. When cleaning, the pump is usually turned off and the power is disconnected, the pump body is disassembled, and the inside of the pump body and the impeller are cleaned with a brush, a water gun or other tools, or a special cleaning agent is used to remove scale and sediment, such as using an acidic or alkaline cleaning agent to dissolve scale and sediment.

[0004] In actual use of the prior art, common water pump cleaning methods include manual cleaning and chemical cleaning. Manual cleaning requires shutting down the machine and disassembling various parts of the water pump, and then manually scrubbing with tools. The operation process is relatively cumbersome and takes a long time, and the cleaning cost is high. In view of the above technical problems, it is necessary to provide a guided self-cleaning water pump. Summary of the invention

[0005] The object of the present invention is to provide a guided self-cleaning water pump to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] A guided self-cleaning water pump, comprising a water pump housing, an impeller cleaning assembly and a pipeline cleaning assembly, comprising a water inlet pipe connected to one side of the water pump housing, the outer surface of the water pump housing being connected to a water outlet pipe; comprising an impeller rear cover plate located in the inner cavity of the water pump housing, the outer surface of the impeller rear cover plate being evenly fixedly connected to a plurality of impeller blades, the outer surface of the impeller rear cover plate being evenly fixedly connected to a plurality of guide blocks, a scraper plate 1 being abutted against the side wall of the inner cavity of the water pump housing, a scraper plate 2 being abutted against the other side of the inner cavity of the water pump housing, a telescopic rod being fixedly connected to one side of the scraper plate 1 and the scraper plate 2, an electromagnet ring 1 being fixedly connected to one side of the water pump housing, and two electromagnet rings 2 being symmetrically fixedly connected to the outer surface of the water pump housing; comprising a speed change plate fixedly connected to the inner cavity of one end of the water inlet pipe close to the water pump housing, a plurality of conical speed change holes being evenly opened on the speed change plate, a filter screen being fixedly connected to the inner cavity of one end of the water inlet pipe away from the water pump housing, and a plurality of cleaning balls being filled in the inner cavity of the water inlet pipe.

[0008] As a further improvement of the present invention, a base is fixedly connected to the lower surface of the water pump housing, a motor is fixedly connected to the upper surface of the base, and the output shaft end of the motor passes through the water pump housing and is fixedly connected to the impeller rear cover.

[0009] As a further improvement of the present invention, one side of the impeller rear cover disc abuts against the inner wall of the water pump housing, and an observation window is inlaid on the outer surface of the water pump housing, and the observation window is made of transparent material.

[0010] As a further improvement of the present invention, one end of the telescopic rod is fixedly connected to the guide block, the front end of the guide block is triangular and the two sides are arc-shaped, and the guide block is located in the middle position between two adjacent impeller blades.

[0011] As a further improvement of the present invention, a spring is sleeved on the outer surface of the telescopic rod, one end of the spring is fixedly connected to the guide block, and the other end of the spring is respectively fixedly connected to the scraper 1 and the scraper 2.

[0012] As a further improvement of the present invention, the scraper blade 1 and the scraper blade 2 are both made of magnetic materials, and the electromagnet ring 1 and the electromagnet ring 2 have their own power supply.

[0013] As a further improvement of the present invention, the outer surface of the water inlet pipe is connected to a sewage pipe, a pipe cover is provided at the lower end of the sewage pipe, a sealing member is fixedly connected to the inner cavity of the pipe cover, and the sealing member is located inside the sewage pipe.

[0014] As a further improvement of the present invention, the cleaning balls are evenly distributed between the filter screen and the speed change plate in the water inlet pipe, and the water inlet pipe is made of a transparent material.

[0015] As a further improvement of the present invention, the cleaning ball comprises an inner floating ball which is hollow inside and filled with gas, the outer surface of the inner floating ball is wrapped with an outer wrapping layer, and the outer surface of the outer wrapping layer is evenly provided with a plurality of conical protrusions.

[0016] As a further improvement of the present invention, the outer wrapping layer and the conical protrusion block are both made of adsorption material, and the conical protrusion block has the same shape as the conical speed change hole.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This solution uses a filter to filter out large particles of impurities in the water, and uses a cleaning ball to absorb fine impurities in the water. The cleaning ball is driven by the water flow to move in the water inlet pipe to help remove impurities attached to the pipe wall. The outer wrapping layer on the outer surface of the cleaning ball is made of an adsorption material that can absorb impurities in the water flow. The conical protrusion block can enhance the friction of the cleaning ball and better remove impurities on the pipe wall. At the same time, the conical protrusion block can be inserted into the conical speed change hole on the speed change plate to clean the conical speed change hole to avoid blockage.

[0019] (2) This solution changes the water flow speed by gradually reducing the aperture of the tapered speed-changing hole, forming a fast water flow impact column, generating a strong impact force, and impacting and cleaning the impeller blades and the impeller rear cover disc surface impeller impeller impeller impeller and the impeller rear cover disc impeller ...

[0020] (3) This solution starts the electromagnet ring 1 and the electromagnet ring 2 to drive the scraper 1 and the scraper 2 to move outward and stick to the inner wall of the water pump casing, and pulls the telescopic rod and the spring to extend. Under the action of the electromagnet ring 1 and the electromagnet ring 2, the scraper 1 and the scraper 2 stick to the inner wall of the water pump casing and rotate with the impeller blades to scrape the inside of the water pump casing and automatically clean the impurities attached to the inner wall of the water pump casing, thereby reducing the need to disassemble the pump body for cleaning and simplifying the maintenance process. Timely cleaning of impurities attached to the inner wall of the water pump casing can reduce the efficiency loss caused by blockage or increased friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2A half-section schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a side-section schematic diagram of the internal structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the impeller structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the guide block of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the speed change plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the cleaning ball of the present invention;

[0028] Figure 8 It is a schematic diagram of the internal structure of a half-section of the cleaning ball of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Pump casing; 101. Water inlet pipe; 102. Water outlet pipe; 103. Base; 104. Motor; 2. Impeller cleaning assembly; 201. Impeller rear cover plate; 202. Impeller blades; 203. Guide block; 204. Scraper 1; 205. Scraper 2; 206. Telescopic rod; 207. Spring; 208. Observation window; 209. Electromagnetic ring 1; 210. Electromagnetic ring 2; 3. Pipe cleaning assembly; 301. Filter; 302. Shift plate; 3021. Conical shift hole; 303. Drain pipe; 304. Pipe cover; 3041. Seal; 305. Cleaning ball; 3051. Inner floating ball; 3052. Outer wrapping layer; 3053. Conical protrusion block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1-3 A guided self-cleaning water pump includes a water pump housing 1, an impeller cleaning assembly 2 and a pipe cleaning assembly 3, including a water inlet pipe 101 connected to one side of the water pump housing 1, and an outer surface of the water pump housing 1 is connected to a water outlet pipe 102.

[0034] Specifically, a base 103 is fixedly connected to the lower surface of the water pump housing 1, a motor 104 is fixedly connected to the upper surface of the base 103, and the water inlet pipe 101 is made of a transparent material.

[0035] Furthermore, the water pump housing 1 protects the internal components from the influence of the external environment, and also provides support. The water inlet pipe 101 introduces the water to be treated into the interior of the water pump housing 1, and discharges the treated water through the water outlet pipe 102. The base 103 provides a solid foundation for the entire device to ensure that the device is placed stably. The motor 104 device provides a power source. The water inlet pipe 101 is made of transparent material, and the situation inside the pipe can be clearly observed.

[0036] Embodiment 2:

[0037] See also Figure 1-5 A guided self-cleaning water pump comprises an impeller rear cover plate 201 located in the inner cavity of a water pump casing 1, a plurality of impeller blades 202 are evenly fixedly connected to the outer surface of the impeller rear cover plate 201, a plurality of guide blocks 203 are evenly fixedly connected to the outer surface of the impeller rear cover plate 201, a scraper plate 1 204 is abutted against the side wall of the inner cavity of the water pump casing 1, a scraper plate 205 is abutted against the other side of the inner cavity of the water pump casing 1, a telescopic rod 206 is fixedly connected to one side of the scraper plate 1 204 and the scraper plate 2 205, an electromagnet ring 1 209 is fixedly connected to one side of the water pump casing 1, and two electromagnet rings 2 210 are symmetrically fixedly connected to the outer surface of the water pump casing 1.

[0038] Specifically, the output shaft end of the motor 104 passes through the water pump housing 1 and is fixedly connected to the impeller rear cover plate 201. One side of the impeller rear cover plate 201 abuts against the inner wall of the water pump housing 1. An observation window 208 is inlaid on the outer surface of the water pump housing 1. The observation window 208 is made of transparent material. One end of the telescopic rod 206 is fixedly connected to the guide block 203. The front end of the guide block 203 is triangular and the two sides are arc-shaped. The guide block 203 is located in the middle position between two adjacent impeller blades 202. A spring 207 is sleeved on the outer surface of the telescopic rod 206. One end of the spring 207 is fixedly connected to the guide block 203, and the other end of the spring 207 is fixedly connected to the scraper 1 204 and the scraper 2 205 respectively. The scraper 1 204 and the scraper 2 205 are both made of magnetic materials. The electromagnet ring 1 209 and the electromagnet ring 2 210 have their own power supply.

[0039] Furthermore, the starting motor 104 drives the impeller rear cover 201 and the impeller blades 202 to rotate, and the water source is drawn into the water inlet pipe 101. The water source that has been accelerated forms a fast water flow impact column, which generates a strong impact force. This impact force can clean the impeller blades 202 and the impeller rear cover 201. The impeller blades 202 and the impeller rear cover 201 are prevented from staying and adhering to the impeller blades 202 and the impeller rear cover 201, thereby avoiding the formation of scale that is difficult to remove. The impeller rear cover 201 is used to fix the impeller and provide a stable support. The impeller blades 202 convert the rotational motion of the motor 104 into the kinetic energy of the water flow, and automatically clean the impeller blades 202 through the change in the speed of the water flow itself, thereby reducing the time required to stop the machine for manual cleaning. This not only saves labor costs, but also reduces production losses caused by downtime. In addition, timely cleaning of the sediment on the impeller surface can reduce wear and extend the service life of the equipment.

[0040] When the water source disperses and flows into the water pump housing 1 in the flow channel formed by two adjacent impeller blades 202, the water flow disperses outward and the impact force decreases. At this time, the water flow is guided by the guide block 203 to make the water flow deviate to the surface of the impeller blade 202, thereby increasing the impact force and impacting and cleaning the side of the impeller blade 202. The front end of the guide block 203 is a triangle, and its main purpose is to separate the water flow and guide it to flow to both sides of the guide block. This shape helps to increase the impact force of the water flow and accelerate the water flow. The two sides of the guide block 203 are curved surfaces, which can better guide the water flow and make it flow smoothly along the surface of the guide block, which helps to form a stable flow path, so that the water flow is more evenly distributed on the surface of the impeller blade 202, and the impact force and cleaning effect are improved. The angle of the guide block 203 relative to the water flow direction is approximately between 30 degrees and 45 degrees, which can not only effectively guide the water flow, but also ensure sufficient impact force. The guide block 203 is set between two adjacent impeller blades 202 and is located in the middle position to ensure the best effect.

[0041] When the operator is in use, he can observe whether there are impurities attached to the inner wall of the water pump housing 1 through the observation window 208. The observation window 208 is made of high-strength transparent plastic or glass material, and can also be made of other transparent materials. It should be noted that materials with high wear resistance must be used to ensure the safety of the device. When there are impurities attached to the inside of the water pump housing 1, the electromagnetic ring 1 209 and the electromagnetic ring 210 are started to drive the scraper 1 204 and the scraper 2 205 to move outward and stick to the inner wall of the water pump housing 1, and pull the telescopic rod 206 and the spring 207 to extend. Under the action of the second 210, the scraper 1 204 and the scraper 2 205 are attached to the inner wall of the water pump casing 1, and rotate with the impeller blade 202 to scrape the inside of the water pump casing 1, and automatically clean the impurities attached to the inner wall of the water pump casing 1. The scraper 1 204 and the scraper 2 205 are made of magnetic materials, such as iron-based alloys or nickel-iron alloys, which have high magnetic permeability and high strength and wear resistance. They are suitable for being used as scrapers in special applications that only require high magnetic permeability. The shapes of the electromagnet ring 1 209 and the electromagnet ring 210 are exactly the shapes of the paths that the scraper 1 204 and the scraper 2 205 need to move, ensuring magnetic stability.

[0042] After the cleaning is completed, the electromagnet ring 1 209 and the electromagnet ring 2 210 are closed. At this time, the scraper 1 204 and the scraper 2 205 lose their magnetic adsorption and automatically reset under the elastic force of the spring 207. The operator can observe the internal situation through the observation window 208 to start the electromagnet ring 1 209 and the electromagnet ring 2 210 when in use. The operator can also set a regular cleaning time according to needs. For example, the electromagnet ring 1 209 and the electromagnet ring 2 210 can be turned on three minutes before the water pump is finished, and the cleaning operation is completed regularly. It can also be turned on multiple times for cleaning operations when there are many impurities in the water source.

[0043] Embodiment 3:

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 A guided self-cleaning water pump includes a speed change plate 302 fixedly connected to the inner cavity of one end of a water inlet pipe 101 close to a water pump housing 1, a plurality of conical speed change holes 3021 are evenly opened on the speed change plate 302, a filter screen 301 is fixedly connected to the inner cavity of one end of the water inlet pipe 101 away from the water pump housing 1, and a plurality of cleaning balls 305 are filled in the inner cavity of the water inlet pipe 101.

[0045] Specifically, the outer surface of the water inlet pipe 101 is connected to the sewage pipe 303, and a pipe cover 304 is provided at the lower end of the sewage pipe 303. The inner cavity of the pipe cover 304 is fixedly connected to a seal 3041, and the seal 3041 is located inside the sewage pipe 303. The cleaning balls 305 are evenly distributed between the filter screen 301 and the speed change plate 302 in the water inlet pipe 101. The water inlet pipe 101 is made of transparent material. The cleaning ball 305 includes an inner floating ball 3051 which is hollow inside and filled with gas. The outer surface of the inner floating ball 3051 is wrapped with an outer wrapping layer 3052. The outer surface of the outer wrapping layer 3052 is evenly provided with a plurality of conical protrusion blocks 3053. The outer wrapping layer 3052 and the conical protrusion blocks 3053 are both made of adsorption materials, and the conical protrusion blocks 3053 have the same shape as the conical speed change hole 3021.

[0046] Furthermore, when the water source enters the water inlet pipe 101, it is first filtered out by the filter screen 301 to intercept large particles of impurities and prevent them from entering the water pump. After the preliminary filtration, the water source is adsorbed by the cleaning ball 305 to remove fine impurities in the water, and under the push of the water flow, the cleaning ball 305 is driven to move in the water inlet pipe 101 to help remove impurities attached to the pipe wall.

[0047] The inner floating ball 3051 inside the cleaning ball 305 can help the cleaning ball 305 to float in the water without sinking. The inner floating ball 3051 is made of a lightweight and highly elastic material, such as PVC, and is filled with gas to ensure that it can easily float in the water and is not easy to break or deform when hit. It can quickly return to its original shape after a collision and maintain good bouncing performance. The outer wrapping layer 3052 is made of an adsorption material that can adsorb impurities in the water flow, such as activated carbon fibers or nanofibers, which can effectively adsorb impurities. The conical protrusion block 3053 can enhance the friction of the cleaning ball 305 and better remove impurities on the pipe wall. At the same time, the conical protrusion block 3053 can be inserted into the conical speed change hole 3021 on the speed change plate 302 to clean the conical speed change hole 3021 to avoid blockage. The conical protrusion block 3053 and the conical speed change hole 3021 have the same shape and can be just inserted into them for adsorption and cleaning.

[0048] When the water source enters the water pump housing 1 through the speed change plate 302, the tapered speed change hole 3021 gradually decreases in diameter, so that the fluid is forced to accelerate through the narrow channel, thereby forming a high-speed water flow. The accelerated water flow will form a high-speed water flow impact column with a strong impact force, which can effectively impact and clean impurities.

[0049] When the cleaning balls 305 in the water inlet pipe 101 absorb a large amount of impurities and need to be cleaned and replaced, the pipe cover 304 can be opened to release the cleaning balls 305, and they can be cleaned or replaced with a new batch of cleaning balls 305 to ensure that the cleaning balls 305 can always have the function of adsorption and cleaning. The irrigation 304 ensures the airtightness through the seal 3041 to avoid water leakage.

[0050] Working principle: During the use of the device, the starting motor 104 drives the impeller rear cover 201 and the impeller blades 202 to rotate, draws water from the water inlet pipe 101, and discharges it through the water outlet pipe 102. When the water enters the water inlet pipe 101, it is first filtered out by the filter 301 to intercept large particles of impurities to prevent them from entering the water pump. After the preliminary filtration, the water passes through the cleaning ball 305 to absorb the fine impurities in the water, and under the impetus of the water flow, the cleaning ball 305 is driven to move in the water inlet pipe 101 to help remove impurities attached to the pipe wall. The inner floating ball 3051 inside the cleaning ball 305 can help the cleaning ball 305 float in the water without sinking, and the outer wrapping layer 3052 is made of adsorption material. To absorb impurities in the water flow, the conical protrusion block 3053 can enhance the friction of the cleaning ball 305 and better remove impurities on the pipe wall. At the same time, the conical protrusion block 3053 can be inserted into the conical speed change hole 3021 on the speed change plate 302 to clean the conical speed change hole 3021 to avoid blockage. When the water source enters the water pump housing 1 through the speed change plate 302, the water flow speed is changed by the gradually decreasing aperture of the conical speed change hole 3021 to form a fast water flow impact column, which generates a strong impact force. This impact force can clean the impurities and sediments on the surface of the impeller blade 202 and the impeller rear cover plate 201, so that the impurities cannot stay and adhere to the impeller blade 202 and the impeller rear cover plate 201 , to avoid the formation of scale that is difficult to remove, the water source disperses and flows into the water pump housing 1 in the flow channel formed by the two adjacent impeller blades 202. At this time, the water flow is guided by the guide block 203 to make the water flow deviate to the surface of the impeller blade 202, thereby increasing the impact force and impacting and cleaning the side of the impeller blade 202. The front end of the guide block 203 is a triangle, and the middle part is an arc surface, which is conducive to the convergence and flow of water flow. When using it, the operator can observe whether there are impurities attached to the inner wall of the water pump housing 1 through the observation window 208. When there are impurities attached to the inside of the water pump housing 1, the electromagnetic ring 1 209 and the electromagnetic ring 2 210 are started to drive the scraper 1 204 and the scraper 2 205 to move outward and stick to the water pump. The inner wall of the housing 1 is moved by the electromagnet ring 1 209 and the electromagnet ring 210, and the scraper 1 204 and the scraper 2 205 are attached to the inner wall of the water pump housing 1, and rotate with the impeller blade 202 to scrape the inside of the water pump housing 1, and automatically clean the impurities attached to the inner wall of the water pump housing 1. After the cleaning is completed, the electromagnet ring 1 209 and the electromagnet ring 210 are closed. At this time, the scraper 1 204 and the scraper 2 205 lose their magnetic adsorption and automatically reset under the elastic force of the spring 207. This design realizes the automatic cleaning function of the inside of the water pump and the inside of the pipeline through the combination of the impeller cleaning component 2 and the pipeline cleaning component 3.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A guided self-cleaning water pump, characterized in that: include: A water pump housing (1) comprises a water inlet pipe (101) connected to one side of the water pump housing (1), and an outer surface of the water pump housing (1) is connected to a water outlet pipe (102); An impeller cleaning assembly (2) comprises an impeller rear cover plate (201) located in the inner cavity of a water pump housing (1), a plurality of impeller blades (202) being evenly fixedly connected to the outer surface of the impeller rear cover plate (201), a plurality of guide blocks (203) being evenly fixedly connected to the outer surface of the impeller rear cover plate (201), a scraper plate 1 (204) being abutted against the side wall of the inner cavity of the water pump housing (1), a scraper plate 2 (205) being abutted against the other side of the inner cavity of the water pump housing (1), a telescopic rod (206) being fixedly connected to one side of the scraper plate 1 (204) and the scraper plate 2 (205), an electromagnet ring 1 (209) being fixedly connected to one side of the water pump housing (1), and two electromagnet rings 2 (210) being symmetrically fixedly connected to the outer surface of the water pump housing (1); The pipeline cleaning component (3) comprises a speed change plate (302) fixedly connected to the inner cavity of one end of a water inlet pipe (101) close to a water pump housing (1), the speed change plate (302) being evenly provided with a plurality of conical speed change holes (3021), a filter screen (301) being fixedly connected to the inner cavity of one end of the water inlet pipe (101) away from the water pump housing (1), and the inner cavity of the water inlet pipe (101) being filled with a plurality of cleaning balls (305).

2. A guided self-cleaning water pump according to claim 1, characterized in that: The lower surface of the water pump housing (1) is fixedly connected to a base (103), the upper surface of the base (103) is fixedly connected to a motor (104), and the output shaft end of the motor (104) passes through the water pump housing (1) and is fixedly connected to the impeller rear cover plate (201).

3. A guided self-cleaning water pump according to claim 1, characterized in that: One side of the impeller rear cover disc (201) abuts against the inner wall of the water pump housing (1); an observation window (208) is inlaid on the outer surface of the water pump housing (1); and the observation window (208) is made of a transparent material.

4. A guided self-cleaning water pump according to claim 1, characterized in that: One end of the telescopic rod (206) is fixedly connected to the guide block (203); the front end of the guide block (203) is triangular and the two sides are arc-shaped; the guide block (203) is located in the middle between two adjacent impeller blades (202).

5. A guided self-cleaning water pump according to claim 1, characterized in that: A spring (207) is sleeved on the outer surface of the telescopic rod (206); one end of the spring (207) is fixedly connected to the guide block (203); and the other end of the spring (207) is respectively fixedly connected to the scraper plate 1 (204) and the scraper plate 2 (205).

6. A guided self-cleaning water pump according to claim 1, characterized in that: The scraper plate 1 (204) and the scraper plate 2 (205) are both made of magnetic materials, and the electromagnet ring 1 (209) and the electromagnet ring 2 (210) have their own power supply.

7. A guided self-cleaning water pump according to claim 1, characterized in that: The outer surface of the water inlet pipe (101) is connected to a sewage pipe (303), a pipe cover (304) is provided at the lower end of the sewage pipe (303), a sealing member (3041) is fixedly connected to the inner cavity of the pipe cover (304), and the sealing member (3041) is located inside the sewage pipe (303).

8. The guided self-cleaning water pump according to claim 1, characterized in that: The cleaning balls (305) are evenly distributed between the filter screen (301) and the speed change plate (302) in the water inlet pipe (101), and the water inlet pipe (101) is made of a transparent material.

9. A guided self-cleaning water pump according to claim 1, characterized in that: The cleaning ball (305) comprises an inner floating ball (3051) which is hollow inside and filled with gas. The outer surface of the inner floating ball (3051) is wrapped with an outer wrapping layer (3052). The outer surface of the outer wrapping layer (3052) is evenly provided with a plurality of conical protrusions (3053).

10. A guided self-cleaning water pump according to claim 9, characterized in that: The outer wrapping layer (3052) and the conical protrusion block (3053) are both made of adsorption material, and the conical protrusion block (3053) has the same shape as the conical speed change hole (3021).

Images