Centrifugal pump with anti-blocking function

Abstract

The invention relates to the technical field of anti-blocking of centrifugal pumps, in particular to a centrifugal pump with an anti-blocking function, which comprises a centrifugal pump body, a filter pipe is arranged on the centrifugal pump body, an annular filter plate and a circular filter barrel are arranged in the filter pipe, filter holes are formed in the annular filter plate, and a filter groove is formed in the side wall of the circular filter barrel. An annular filter plate is arranged in the circular filter barrel, a sliding block is arranged on the inner wall of the annular filter plate, the sliding block is arranged in the filter groove in a sliding mode, adjusting assemblies are arranged on the annular filter plate and the filter pipe, and an output assembly is arranged at the bottom of the filter pipe. And after cleaning is completed, the annular filter plate is reset, the sliding block is driven to slide in the filter tank in the reset process, synchronous cleaning of the filter tank is achieved, non-stop cleaning is achieved, and the output assembly can output impurities accumulated in the filter pipe under the non-stop condition so as to maintain the use effect of the filter pipe.

Description

Technical Field

[0001] This application relates to the field of centrifugal pump anti-clogging technology, and in particular to a centrifugal pump with anti-clogging function. Background Technology

[0002] Centrifugal pumps, as highly efficient and widely used fluid transport devices, play a vital role in modern industrial, municipal engineering, agricultural irrigation, and domestic water supply systems. Their core function is to effectively convert the mechanical energy of the prime mover into the kinetic and potential energy of the transported liquid, enabling long-distance transport, pressure increase, or circulation of water and other liquids. They are key power components ensuring the normal operation of numerous fields such as water resource utilization, industrial cooling, building HVAC, and wastewater treatment. The reliability and continuity of their operation directly affect the efficiency and stability of related systems.

[0003] Centrifugal pumps in the present technology mainly consist of core components such as impeller, pump casing, pump shaft, bearings, sealing devices, and drive motor. Among them, the impeller is the core working element, which applies centrifugal force to the fluid when rotating at high speed, increasing its kinetic energy and pressure; the pump casing forms a flow channel, efficiently collecting the high-speed fluid thrown out by the impeller, and converting part of the kinetic energy into pressure energy through its volute or guide vane structure, guiding the fluid to flow smoothly to the outlet; the pump shaft is responsible for transmitting the motor torque to drive the impeller to rotate; the bearings support the rotating parts; the sealing device is generally a mechanical seal or a packing seal, used to prevent high-pressure fluid inside the pump from leaking outward along the pump shaft and to prevent air from being drawn into the pump, ensuring the normal and efficient operation of the pump.

[0004] Regarding the aforementioned technologies, when the conveying medium contains leaves, plastic fragments, or other solid impurities, these impurities are very likely to become entangled in the impeller inlet, block the impeller flow channel, or get stuck in the sealing gap, affecting the normal use of the centrifugal pump. Furthermore, when repairing blockages, it is usually necessary to stop the centrifugal pump and disassemble the pump body for cleaning operations, which is quite time-consuming. Therefore, improvements are needed. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a centrifugal pump with anti-clogging function.

[0006] This application provides a centrifugal pump with anti-clogging function, which adopts the following technical solution: A centrifugal pump with anti-clogging function includes a centrifugal pump body, which includes an inlet and an outlet. A filter tube is provided on the inlet, and an inlet and an outlet are respectively provided at both ends of the filter tube. The outlet is fixedly connected to the inlet. An annular filter plate and a circular filter barrel are provided inside the filter tube. The annular filter plate is slidably disposed inside the filter tube, and the circular filter barrel is fixedly disposed on the inner wall of the filter tube near the centrifugal pump body. The annular filter plate has multiple sets of filter holes, and the side wall of the circular filter barrel has multiple sets of filter grooves. The length of the circular filter barrel is greater than the thickness of the annular filter plate. A sliding block is provided on the inner wall of the annular filter plate, and the sliding block is slidably disposed in the filter groove. Adjustment components are provided on the annular filter plate and the filter tube for adjusting the position of the annular filter plate and for cleaning the clogged annular filter plate and the circular filter barrel without stopping the pump. An output component is provided at the bottom of the filter tube for outputting the cleaned impurities without stopping the pump.

[0007] By adopting the above technical solution, in the initial state, the annular filter plate in this application is located at the end of the circular filter barrel away from the centrifugal pump body under the action of the adjustment component. After the conveying medium enters the filter tube through the liquid inlet, it is filtered by the annular filter plate, and then enters the centrifugal pump body for high-speed output through the liquid outlet and water inlet. When the annular filter plate becomes blocked, causing a decrease in the liquid output at the water outlet of the centrifugal pump body, the centrifugal pump body will increase the suction force on the annular filter plate. At the same time, with the cooperation of the adjustment component, the annular filter plate moves towards the end of the circular filter barrel closer to the centrifugal pump body. During the movement, the filter groove gradually extends out of the annular filter plate to the side away from the centrifugal pump body, until the annular filter plate... The filter plate is located at the end of the circular filter barrel near the centrifugal pump body and abuts against the inner wall of the filter tube. At this time, the conveying medium is filtered through the filter groove opened on the circular filter barrel, and then enters the centrifugal pump body through the liquid outlet and water inlet for high-speed output. At the same time, the adjustment component can clean the annular filter plate. After cleaning, the annular filter plate is reset to its initial position. During the reset process, the sliding block slides in the filter groove to achieve synchronous cleaning of the filter groove. This allows for cleaning of the annular filter plate and the circular filter barrel without stopping the pump. The output component in this application can output the impurities accumulated in the filter tube without stopping the centrifugal pump body, so as to maintain the use effect of the filter tube.

[0008] Optionally, the adjustment assembly includes a cleaning column, a first electromagnet, and a second electromagnet. Multiple sets of cleaning columns are arranged corresponding to the filter holes, and each set of cleaning columns is positioned on the inner wall of the filter tube near the centrifugal pump body. The first electromagnet is embedded in the annular filter plate near the centrifugal pump body, and the second electromagnet is embedded in the inner wall of the filter tube near the centrifugal pump body. The length of the circular filter barrel is greater than the number of cleaning columns. Initially, the first and second electromagnets repel each other, and the cleaning column and the filter hole are separated. The annular filter plate is located at the end of the circular filter barrel away from the centrifugal pump body. When the annular filter plate becomes clogged, the first and second electromagnets attract each other, and the annular filter plate moves towards the centrifugal pump body until the cleaning column inserts into the filter hole to clean it.

[0009] By adopting the above technical solution, in the initial state, the first electromagnet and the second electromagnet repel each other, causing the annular filter plate to be located at the end of the circular filter barrel away from the centrifugal pump body. When it is necessary to clean the annular filter plate, the direction of the current through the first electromagnet and the second electromagnet is changed, causing the first electromagnet and the second electromagnet to attract each other, moving the annular filter plate towards the centrifugal pump body until the cleaning column is inserted into the filter hole to clean and unclog the filter hole. At this time, the conveyed medium is filtered through the filter tank. After the filter hole is cleaned, the direction of the current of the first electromagnet and the second electromagnet is restored, causing the first electromagnet and the second electromagnet to repel each other, driving the annular filter plate to reset. During the reset process, the sliding block slides in the filter tank to achieve synchronous cleaning of the filter tank, thereby achieving non-stop cleaning of the annular filter plate and the circular filter barrel.

[0010] Optionally, the output component includes an arc-shaped plate, a rotating ring, a sealing plate, a rotating structure, and an unlocking structure. The rotating ring is sleeved on the outer peripheral wall of the annular filter plate and is rotatably connected to the annular filter plate. The arc-shaped plate is disposed on the outer peripheral wall of the rotating ring, and the arc-shaped surface of the arc-shaped plate away from the rotating ring is in contact with the inner wall of the filter tube. An output port is opened on the side wall of the filter tube. The sealing plate is rotatably disposed on the output port. The rotating structure is disposed on the inner wall of the filter tube and the outer wall of the rotating ring, and is used to rotate the sealing plate to open and close the end of the output port near the inner wall of the filter tube. The unlocking structure is disposed on the filter tube and the sealing plate, and is used to seal and close the end of the output port near the outer wall of the filter tube and to open it.

[0011] By adopting the above technical solution, in the initial state, the arc-shaped plate is located on the output port, closing the end of the output port near the inner wall of the filter tube. When cleaning the annular filter plate, due to the rotatable connection between the rotating ring and the annular filter plate, the annular filter plate can drive the rotating ring to move synchronously. When the rotating ring moves, under the action of the rotating structure, it can drive the rotating ring to rotate, thus driving the arc-shaped plate on the rotating ring to rotate synchronously, thereby achieving misalignment between the arc-shaped plate and the output port. Impurities enter and accumulate at the output port. When a large amount of impurities accumulate and need to be cleaned, the arc-shaped plate is reset, and then the unlocking structure in this application is used to open the closed plate, thereby realizing the output of filtered impurities and maintaining the use effect of the filter tube.

[0012] Optionally, the rotating structure includes an arc-shaped groove and a protrusion. The arc-shaped groove is formed on the inner wall of the filter tube and is spirally formed along the length of the filter tube. The protrusion is disposed on the outer peripheral wall of the rotating ring and is slidably disposed in the arc-shaped groove. The protrusion is hemispherical and the cross-section of the arc-shaped groove is semi-circular corresponding to the protrusion.

[0013] By adopting the above technical solution, since the arc-shaped groove is spirally opened along the length of the filter tube, the rotating ring can rotate under the action of the arc-shaped groove and the protrusion when it moves, thereby realizing the rotation of the arc plate. The protrusion is hemispherical, and the cross section of the arc-shaped groove is semi-circular, which can reduce the friction between the protrusion and the arc-shaped groove and facilitate the rotation of the protrusion plate.

[0014] Optionally, the unlocking structure includes a fixing block, a socket block, a connecting rod, and a spring. The fixing block is fixedly disposed on the outer wall of the filter tube and has a socket. The sealing plate has a sliding groove and a telescopic groove, which are connected. The connecting rod is slidably disposed in the sliding groove, and the socket block is slidably disposed in the telescopic groove. The socket block is fixedly connected to the end of the connecting rod near the fixing block. The spring is disposed in the sliding groove, with one end fixedly connected to the inner wall of the sliding groove and the other end fixedly connected to the socket block.

[0015] By adopting the above technical solution, when it is necessary to seal and close the end of the output port near the outer wall of the filter tube through the sealing plate, pull the connecting rod to move away from the fixed block until the socket block is fully inserted into the telescopic groove. At this time, the spring is in a contracted state. After aligning the telescopic groove with the socket, move the connecting rod towards the fixed block until the socket block is inserted into the socket. Otherwise, the sealing plate will be opened.

[0016] Optionally, a flow sensor is provided on the water outlet, and the flow sensor is electrically connected to the first electromagnet and the second electromagnet.

[0017] By adopting the above technical solution, the flow sensor can detect the flow rate at the outlet of the centrifugal pump body. If a decrease in flow rate is detected, it may be due to blockage in the filter tube. The sensor will then send an electrical signal to the first and second electromagnets, thereby enabling fully automatic cleaning of the annular filter plate and the circular filter barrel.

[0018] Optionally, the end of the filter tube away from the centrifugal pump body on the inner wall is provided with a chamfer to prevent impurities from accumulating at the end of the filter tube away from the centrifugal pump body.

[0019] By adopting the above technical solution, chamfering can effectively prevent impurities from accumulating in the corners of the filter tube, thus improving the cleaning effect of impurities.

[0020] Optionally, a sealing gasket is provided on the outer wall of the filter tube to improve the sealing between the sealing plate and the filter tube when the sealing plate is closed.

[0021] By adopting the above technical solution, the sealing gasket can improve the sealing performance between the sealing plate and the filter tube, and reduce the possibility of leakage from the filter tube.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In the initial state, the first and second electromagnets repel each other, causing the annular filter plate to be located at the end of the circular filter barrel away from the centrifugal pump body. When it is necessary to clean the annular filter plate, the direction of the current through the first and second electromagnets is changed, causing the first and second electromagnets to attract each other and move the annular filter plate towards the centrifugal pump body until the cleaning column is inserted into the filter hole to clean and unclog the filter hole. At this time, the conveyed medium is filtered through the filter tank. After the filter hole is cleaned, the direction of the current of the first and second electromagnets is restored, causing the first and second electromagnets to repel each other and drive the annular filter plate to reset. During the reset process, the sliding block slides in the filter tank to achieve synchronous cleaning of the filter tank, thereby achieving non-stop cleaning of the annular filter plate and the circular filter barrel. 2. The arc-shaped plate is located on the output port, closing the end of the output port near the inner wall of the filter tube. When cleaning the annular filter plate, due to the rotatable connection between the rotating ring and the annular filter plate, the annular filter plate can drive the rotating ring to move synchronously. When the rotating ring moves, under the action of the rotating structure, it can drive the rotating ring to rotate, thus driving the arc-shaped plate on the rotating ring to rotate synchronously, thereby achieving the misalignment of the arc-shaped plate and the output port. Impurities enter and accumulate at the output port. When a large amount of impurities accumulate and need to be cleaned, the arc-shaped plate is reset, and then the unlocking structure in this application is used to open the closed plate, so that the filtered impurities can be output, thereby maintaining the use effect of the filter tube. 3. The flow sensor can detect the flow rate at the outlet of the centrifugal pump body. If a decrease in flow rate is detected, it may be due to blockage in the filter tube. The sensor will then send an electrical signal to the first and second electromagnets to automatically clean the annular filter plate and the circular filter barrel. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the first cross-sectional structure of the filter tube; Figure 3 This is a schematic diagram of the second cross-sectional structure of the filter tube; Figure 4 This is a schematic diagram of the third cross-sectional structure of the filter tube.

[0025] Reference numerals: 1. Centrifugal pump body; 11. Inlet; 12. Outlet; 2. Filter tube; 21. Liquid inlet; 22. Liquid outlet; 23. Annular filter plate; 231. Filter hole; 232. Sliding block; 24. Circular filter barrel; 241. Filter tank; 3. Adjustment component; 31. Cleaning column; 32. First electromagnet; 33. Second electromagnet; 4. Output component; 41. Arc plate; 42. Rotating ring; 43. Sealing plate; 44. Rotating structure; 441. Arc groove; 442. Protrusion; 45. Unlocking structure; 45. Output port; 451. Fixing block; 452. Socket block; 453. Connecting rod; 454. Spring; 5. Flow sensor; 6. Chamfer. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail.

[0027] This application discloses a centrifugal pump with anti-clogging function, referring to... Figures 1-4 A centrifugal pump with anti-clogging function includes a centrifugal pump body 1, which includes an inlet 11 and an outlet 12. A filter tube 2 is installed on the inlet 11. The two ends of the filter tube 2 are integrally provided with an inlet 21 and an outlet 22, respectively. The outlet 22 is fixedly connected to the flange of the inlet 11. An annular filter plate 23 and a circular filter barrel 24 are installed inside the filter tube 2. The annular filter plate 23 is slidably installed inside the filter tube 2. The circular filter barrel 24 is fixedly welded to the inner wall of the filter tube 2 near the centrifugal pump body 1. The annular filter plate 23 has multiple sets of filter holes 231. The side wall of the circular filter barrel 24 has multiple sets of filter grooves 241. The length of the circular filter barrel 24 is greater than the thickness of the annular filter plate 23. A sliding block 232 is integrally provided on the inner wall of the annular filter plate 23. The sliding block 232 is slidably installed in the filter groove 241. An adjustment component 3 is installed on the annular filter plate 23 and the filter tube 2. An output component 4 is installed at the bottom of the filter tube 2.

[0028] In the initial state, the annular filter plate 23 in this embodiment is located at the end of the circular filter barrel 24 away from the centrifugal pump body 1 under the action of the adjusting component 3. After the conveying medium enters the filter tube 2 through the liquid inlet 21, it is filtered by the annular filter plate 23, and then enters the centrifugal pump body 1 through the liquid outlet 22 and the water inlet 11 for high-speed output. When the annular filter plate 23 becomes blocked, causing the liquid output at the water outlet 12 of the centrifugal pump body 1 to decrease, the suction force of the centrifugal pump body 1 on the annular filter plate 23 will increase. At the same time, with the cooperation of the adjusting component 3, the annular filter plate 23 moves towards the end of the circular filter barrel 24 closer to the centrifugal pump body 1. During the movement, the filter tank 241 gradually extends out of the side of the annular filter plate 23 away from the centrifugal pump body 1 until the annular filter plate 23 is located at the end of the circular filter barrel 24. The filter barrel 24 is located near the end of the centrifugal pump body 1 and abuts against the inner wall of the filter tube 2. At this time, the conveying medium is filtered through the filter groove 241 opened on the circular filter barrel 24, and then enters the centrifugal pump body 1 through the liquid outlet 22 and the water inlet 11 for high-speed output. At the same time, the adjustment component 3 can clean the annular filter plate 23. After cleaning, the annular filter plate 23 is reset to its initial position. During the reset process, the sliding block 232 slides in the filter groove 241 to achieve synchronous cleaning of the filter groove 241. This allows for cleaning of the annular filter plate 23 and the circular filter barrel 24 without stopping the pump. In this embodiment, the output component 4 can output the impurities accumulated in the filter tube 2 without stopping the centrifugal pump body 1, so as to maintain the use effect of the filter tube 2.

[0029] In order to adjust the position of the annular filter plate 23 and clean the clogged annular filter plate 23 and circular filter barrel 24 without stopping the machine, the adjustment component 3 in this embodiment includes a cleaning column 31, a first electromagnet 32 ​​and a second electromagnet 33. Multiple sets of cleaning columns 31 are integrally arranged corresponding to the filter holes 231. The positions of the multiple sets of cleaning columns 31 corresponding to the multiple sets of filter holes 231 are all integrally arranged on the inner wall of the filter tube 2 near the centrifugal pump body 1. The first electromagnet 32 ​​is embedded in the side of the annular filter plate 23 near the centrifugal pump body 1. The second electromagnet 33 is embedded in the inner wall of the filter tube 2 near the centrifugal pump body 1. The length of the circular filter barrel 24 is greater than that of the cleaning column 31.

[0030] Initially, the first electromagnet 32 ​​and the second electromagnet 33 repel each other, causing the annular filter plate 23 to be located at the end of the circular filter tank 24 away from the centrifugal pump body 1. When cleaning of the annular filter plate 23 is required, the direction of the current passing through the first electromagnet 32 ​​and the second electromagnet 33 is changed, causing the first electromagnet 32 ​​and the second electromagnet 33 to attract each other, moving the annular filter plate 23 towards the centrifugal pump body 1 until the cleaning column 31 is inserted into the filter hole 231 to clean and unclog the filter hole 231. At this time, the conveying medium is filtered through the filter tank 241. When the filter hole 231 is cleaned... After the treatment is completed, the current direction of the first electromagnet 32 ​​and the second electromagnet 33 is restored so that the first electromagnet 32 ​​and the second electromagnet 33 repel each other, driving the annular filter plate 23 to reset. During the reset process, the sliding block 232 slides in the filter tank 241 to achieve synchronous cleaning of the filter tank 241, thereby achieving non-stop cleaning of the annular filter plate 23 and the circular filter barrel 24. In this embodiment, the first electromagnet 32 ​​and the second electromagnet 33 are both annular electromagnets. The annular electromagnet is a preferred embodiment. In other embodiments, it can be replaced with a bar magnet or the like according to actual needs.

[0031] To achieve continuous output of impurities and maintain the effectiveness of the filter tube 2, the output component 4 in this embodiment includes an arc-shaped plate 41, a rotating ring 42, a sealing plate 43, a rotating structure 44, and an unlocking structure 45. The rotating ring 42 is sleeved on the outer peripheral wall of the annular filter plate 23 and is rotatably connected to the annular filter plate 23. The arc-shaped plate 41 is welded and installed on the outer peripheral wall of the rotating ring 42, and the arc-shaped surface of the arc-shaped plate 41 away from the rotating ring 42 is in contact with the inner wall of the filter tube 2. An output port 450 is opened on the side wall of the filter tube 2. The sealing plate 43 is rotatably installed on the output port 450. The rotating structure 44 is installed on the inner wall of the filter tube 2 and the outer wall of the rotating ring 42. The unlocking structure 45 is installed on the filter tube 2 and the sealing plate 43.

[0032] In the initial state, the arc plate 41 is located on the output port 450, closing the end of the output port 450 near the inner wall of the filter tube 2. When cleaning the annular filter plate 23, due to the rotatable connection between the rotating ring 42 and the annular filter plate 23, the annular filter plate 23 can drive the rotating ring 42 to move synchronously. When the rotating ring 42 moves, under the action of the rotating structure 44, it can drive the rotating ring 42 to rotate, thus driving the arc plate 41 on the rotating ring 42 to rotate synchronously, thereby achieving the misalignment of the arc plate 41 and the output port 450. Impurities enter the output port 450 and accumulate. When a large amount of impurities accumulate and need to be cleaned, the arc plate 41 is reset, and then the closing plate 43 is opened through the unlocking structure 45 in this embodiment, so that the filtered impurities can be output, thereby maintaining the use effect of the filter tube 2.

[0033] The rotating structure 44 in this embodiment includes an arc-shaped groove 441 and a protrusion 442. The arc-shaped groove 441 is formed on the inner wall of the filter tube 2 and is spirally formed along the length of the filter tube 2. The protrusion 442 is integrally formed on the outer peripheral wall of the rotating ring 42 and is slidably installed in the arc-shaped groove 441. The protrusion 442 is hemispherical and the cross section of the arc-shaped groove 441 is semi-circular corresponding to the protrusion 442. Since the arc-shaped groove 441 is spirally opened along the length of the filter tube 2, the rotating ring 42 can rotate under the action of the arc-shaped groove 441 and the protrusion 442 when it moves, thereby realizing the rotation of the arc plate 41. The protrusion 442 is hemispherical, and the cross section of the arc-shaped groove 441 is semi-circular corresponding to the protrusion 442, which can reduce the friction between the protrusion 442 and the arc-shaped groove 441, making it easier to rotate the protrusion plate.

[0034] The unlocking structure 45 in this embodiment includes a fixing block 451, a socket block 452, a connecting rod 453, and a spring 454. The fixing block 451 is fixedly welded to the outer wall of the filter tube 2. A socket is provided on the fixing block 451. A sliding groove and a telescopic groove are provided on the sealing plate 43. The sliding groove and the telescopic groove are connected. The connecting rod 453 is slidably installed in the sliding groove. The socket block 452 is slidably installed in the telescopic groove. The socket block 452 and the end of the connecting rod 453 near the fixing block 451 are fixedly welded together. The spring 454 is installed in the sliding groove. One end is welded to the inner wall of the sliding groove and the other end is welded to the socket block 452.

[0035] When it is necessary to seal and close the end of the output port 450 near the outer wall of the filter tube 2 through the sealing plate 43, pull the connecting rod 453 to move away from the fixed block 451 until the socket block 452 is fully inserted into the telescopic groove. At this time, the spring 454 is in a contracted state. After aligning the telescopic groove with the socket, move the connecting rod 453 towards the fixed block 451 until the socket block 452 is inserted into the socket. Otherwise, the sealing plate 43 is opened. In this embodiment, the unlocking structure 45 is manual. In other embodiments, other fully automatic methods such as electric suction can be used to open and close the sealing plate 43 according to actual usage requirements.

[0036] Manual monitoring of water output makes it difficult to detect filter blockages in a timely manner. Therefore, in this embodiment, a flow sensor 5 is fixedly installed on the outlet 12. The flow sensor 5 is electrically connected to the first electromagnet 32 ​​and the second electromagnet 33. The flow sensor 5 can detect the flow rate at the outlet 12 of the centrifugal pump body 1. If a decrease in flow rate is detected, it may be due to blockage in the filter tube 2. The flow sensor then sends an electrical signal to the first electromagnet 32 ​​and the second electromagnet 33, thereby achieving fully automatic cleaning of the annular filter plate 23 and the circular filter canister 24.

[0037] Furthermore, in this embodiment, the inner wall end of the filter tube 2 away from the centrifugal pump body 1 is provided with a chamfer 6. The chamfer 6 can effectively prevent impurities from accumulating in the inner corner of the filter tube 2, thereby improving the cleaning effect of impurities. A sealing gasket is provided on the outer wall of the filter tube 2. The sealing gasket can improve the sealing between the sealing plate 43 and the filter tube 2, reducing the possibility of leakage of the filter tube 2.

[0038] The implementation principle of a centrifugal pump with anti-clogging function in this application embodiment is as follows: When it is necessary to clean the annular filter plate 23 and the circular filter barrel 24 without stopping the pump, the direction of the current through the first electromagnet 32 ​​and the second electromagnet 33 is changed, so that the first electromagnet 32 ​​and the second electromagnet 33 attract each other, causing the annular filter plate 23 to move towards the centrifugal pump body 1 until the cleaning column 31 is inserted into the filter hole 231 to clean and unclog the filter hole 231. At this time, the conveyed medium is filtered through the filter tank 241. After the filter hole 231 is cleaned, the direction of the current through the first electromagnet 32 ​​and the second electromagnet 33 is restored, so that the first electromagnet 32 ​​and the second electromagnet 33 repel each other, driving the annular filter plate 23 to reset. During the reset process, the sliding block 232 slides in the filter tank 241 to achieve synchronous cleaning of the filter tank 241, thereby achieving cleaning of the annular filter plate 23 and the circular filter barrel 24 without stopping the pump. When it is necessary to output the filtered impurities without stopping the machine, since the arc groove 441 is spirally opened along the length of the filter tube 2, the rotating ring 42 can rotate under the action of the arc groove 441 and the protrusion 442 when it moves, thereby realizing the misalignment of the arc plate 41 and the output port 450. The impurities enter the output port 450 and accumulate. Then the arc plate 41 is reset, and the sealing plate 43 is opened so that the impurities can be output without stopping the machine.

[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "an," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A centrifugal pump with anti-clogging function, comprising a centrifugal pump body (1), characterized in that: The centrifugal pump body (1) includes an inlet (11) and an outlet (12). A filter tube (2) is provided on the inlet (11). An inlet (21) and an outlet (22) are respectively provided at both ends of the filter tube (2). The outlet (22) is fixedly connected to the inlet (11). An annular filter plate (23) and a circular filter barrel (24) are provided inside the filter tube (2). The annular filter plate (23) is slidably disposed inside the filter tube (2). The circular filter barrel (24) is fixedly disposed on the inner wall of the filter tube (2) near the centrifugal pump body (1). The annular filter plate (23) has multiple sets of filter holes (231). The circular filter barrel... Multiple filter grooves (241) are provided on the side wall of (24). The length of the circular filter barrel (24) is greater than the thickness of the annular filter plate (23). A sliding block (232) is provided on the inner wall of the annular filter plate (23). The sliding block (232) is slidably disposed in the filter groove (241). An adjustment component (3) is provided on the annular filter plate (23) and the filter tube (2) for adjusting the position of the annular filter plate (23) and for cleaning the blocked annular filter plate (23) and the circular filter barrel (24) without stopping the machine. An output component (4) is provided at the bottom of the filter tube (2) for outputting the cleaned impurities without stopping the machine.

2. A centrifugal pump with anti-clogging function according to claim 1, characterized in that: The adjustment component (3) includes a cleaning column (31), a first electromagnet (32), and a second electromagnet (33). Multiple sets of cleaning columns (31) are arranged corresponding to the filter holes (231). The positions of these multiple sets of cleaning columns (31) corresponding to the multiple sets of filter holes (231) are all located on the inner wall of the filter tube (2) near the centrifugal pump body (1). The first electromagnet (32) is embedded in the annular filter plate (23) on the side near the centrifugal pump body (1). The second electromagnet (33) is embedded in the inner wall of the filter tube (2) near the centrifugal pump body (1). The circular filter barrel (24) has a long length. The cleaning column (31) is installed. In the initial state, the first electromagnet (32) and the second electromagnet (33) repel each other, the cleaning column (31) and the filter hole (231) are separated, and the annular filter plate (23) is located at the end of the circular filter barrel (24) away from the centrifugal pump body (1). When the annular filter plate (23) is blocked, the first electromagnet (32) and the second electromagnet (33) attract each other, and the annular filter plate (23) moves towards the centrifugal pump body (1) until the cleaning column (31) is inserted into the filter hole (231) to clean the filter hole (231).

3. A centrifugal pump with anti-clogging function according to claim 1, characterized in that: The output component (4) includes an arc-shaped plate (41), a rotating ring (42), a sealing plate (43), a rotating structure (44), and an unlocking structure (45). The rotating ring (42) is sleeved on the outer peripheral wall of the annular filter plate (23) and is rotatably connected to the annular filter plate (23). The arc-shaped plate (41) is disposed on the outer peripheral wall of the rotating ring (42), and the arc-shaped surface of the arc-shaped plate (41) away from the rotating ring (42) is in contact with the inner wall of the filter tube (2). An output port (450) is opened on the side wall of the filter tube (2). The sealing plate (43) is rotatably mounted on the output port (450). The rotating structure (44) is mounted on the inner wall of the filter tube (2) and the outer wall of the rotating ring (42) to rotate the sealing plate (43) and open and close the end of the output port (450) near the inner wall of the filter tube (2). The unlocking structure (45) is mounted on the filter tube (2) and the sealing plate (43) to seal and open the end of the output port (450) near the outer wall of the filter tube (2).

4. A centrifugal pump with anti-clogging function according to claim 3, characterized in that: The rotating structure (44) includes an arc-shaped groove (441) and a protrusion (442). The arc-shaped groove (441) is opened on the inner wall of the filter tube (2) and is spirally opened along the length of the filter tube (2). The protrusion (442) is disposed on the outer peripheral wall of the rotating ring (42) and is slidably disposed in the arc-shaped groove (441). The protrusion (442) is hemispherical and the cross section of the arc-shaped groove (441) is semi-circular corresponding to the protrusion (442).

5. A centrifugal pump with anti-clogging function according to claim 3, characterized in that: The unlocking structure (45) includes a fixing block (451), a socket block (452), a connecting rod (453), and a spring (454). The fixing block (451) is fixedly disposed on the outer wall of the filter tube (2). A socket is provided on the fixing block (451). A sliding groove and a telescopic groove are provided on the sealing plate (43). The sliding groove and the telescopic groove are connected. The connecting rod (453) is slidably disposed in the sliding groove. The socket block (452) is slidably disposed in the telescopic groove. The socket block (452) is fixedly connected to the end of the connecting rod (453) near the fixing block (451). The spring (454) is disposed in the sliding groove. One end is fixedly connected to the inner wall of the sliding groove, and the other end is fixedly connected to the socket block (452).

6. A centrifugal pump with anti-clogging function according to claim 2, characterized in that: A flow sensor (5) is provided on the outlet (12), and the flow sensor (5) is electrically connected to the first electromagnet (32) and the second electromagnet (33).

7. A centrifugal pump with anti-clogging function according to claim 1, characterized in that: The filter tube (2) is provided with a chamfer (6) at the end of the inner wall away from the centrifugal pump body (1) to prevent impurities from accumulating at the end of the filter tube (2) away from the centrifugal pump body (1).

8. A centrifugal pump with anti-clogging function according to claim 3, characterized in that: A sealing gasket is provided on the outer wall of the filter tube (2) to improve the sealing between the sealing plate (43) and the filter tube (2) when the sealing plate (43) is closed.

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