Energy-saving anti-blocking centrifugal pump

Abstract

The energy-saving type anti-blocking centrifugal pump comprises a centrifugal pump body, and an anti-blocking mechanism is installed at the water inlet end of the centrifugal pump body in a communicating mode and used for preventing the centrifugal pump body from being blocked; according to the anti-blocking mechanism, through the arrangement of the crushing assembly, the crushing impeller can crush foreign matter in water, the self-adaptive adjusting unit can adjust the water pressure in a self-adaptive mode according to the water flow, and under the low-flow working condition, the foreign matter can make full contact with the crushing impeller; the problem that foreign matters are pushed away by water flow due to insufficient contact between the foreign matters and the crushing device is avoided, the crushing effect is improved, water inlet resistance increase due to fixed through-flow area can be avoided during high flow, the advantages of energy consumption reduction and energy-saving operation are achieved, blockage of an impeller passage of the centrifugal pump body is further prevented, normal operation of the pump is guaranteed, and the service life of the centrifugal pump is prolonged. And the problems of efficiency reduction, energy consumption increase and the like of the centrifugal pump caused by blockage are reduced.

Description

Technical Field

[0001] This invention relates to the field of centrifugal pump anti-clogging technology, specifically to an energy-saving anti-clogging centrifugal pump. Background Technology

[0002] Centrifugal pumps are widely used power pumps in industrial, agricultural, and municipal engineering projects. However, when conveying media containing solid particles, fibers, or other foreign matter, the impeller flow channel of traditional centrifugal pumps is prone to clogging, leading to a sharp drop in pump efficiency, increased energy consumption, and even damage to the unit, requiring shutdown for cleaning, which seriously affects production efficiency. In existing technology, to solve the clogging problem, a fixed crusher or bar screen is usually installed before the impeller inlet to prevent the centrifugal pump from clogging.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] In the existing technology: under low flow conditions, the water inlet speed is slow, and foreign objects are prone to insufficient contact with the crushing device before being pushed away by the water flow, resulting in poor crushing effect; while at high flow rates, the fixed flow area can easily increase the water inlet resistance, causing unnecessary energy loss. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving, anti-clogging centrifugal pump to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving anti-clogging centrifugal pump, comprising a centrifugal pump body, wherein an anti-clogging mechanism is connected and installed at the water inlet end of the centrifugal pump body to prevent clogging of the centrifugal pump body; wherein,

[0007] The anti-clogging mechanism includes a housing disposed on one side of the water inlet end of the centrifugal pump body. A first connector is connected to one side of the housing. The housing is connected to the water inlet end of the centrifugal pump body through the first connector. A filter screen for intercepting foreign objects is fixedly installed at the connection between the first connector and the housing. A second connector for connecting to an external water supply pipe is connected to the other side of the housing.

[0008] The second connector is equipped with a crushing assembly for crushing foreign objects in the water. The crushing assembly includes a motor installed at the bottom of one side of the housing. Two adaptive adjustment units are installed through the bottom of one side of the housing, and the output end of the motor is fixedly connected to one of the adaptive adjustment units. Sealing baffles are installed on the inner surfaces of the two adaptive adjustment units. Two crushing impellers are installed at one end of the adaptive adjustment unit located on the side of the sealing baffle, and one end of each of the two crushing impellers is rotatably connected to the inner wall of the housing to adaptively adjust the water pressure according to the water flow rate.

[0009] The adaptive adjustment unit is equipped with a pushing unit on one side inside the housing, which is used to push foreign objects onto the surface of the crushing impeller for crushing when the water flow rate is large.

[0010] A guiding unit is installed at the top of the inner cavity of the shell to guide the water entering the shell.

[0011] The bottom of the housing is connected to a cleaning mechanism for cleaning up broken foreign objects inside the housing.

[0012] Preferably, the adaptive adjustment unit includes two first sleeves that are installed through the bottom of one side of the housing. A first piston plate is slidably installed inside the first sleeve. A first return spring is fixedly installed on one side of the first piston plate, and the end of the first return spring away from the first piston plate is fixedly connected to the inner wall of the first sleeve. A transmission column is fixedly installed on the other side of the first piston plate. One end of the transmission column passes through the first sleeve and the crushing impeller in sequence and is rotatably connected to the inner wall of the housing. The crushing impeller is installed on the surface of the transmission column.

[0013] Both of the first sleeves are equipped with pulleys, and both pulleys are wound with a drive belt, and the two pulleys are connected by the drive belt.

[0014] Preferably, the pushing unit includes a filter plate slidably installed inside the housing, and the filter plate is sleeved on the surface of the two crushing impellers. An air bag is fixedly installed at the top between the sealing baffle and the housing. Four second sleeves are fixedly installed around one side of the housing, and the four second sleeves all penetrate the sealing baffle and are slidably connected to it.

[0015] A second piston plate is slidably installed inside the second sleeve, and a second return spring is fixedly installed on one side of the second piston plate. The end of the second return spring away from the second piston plate is fixedly connected to the inner wall of the second sleeve. A piston rod is fixedly installed on the other side of the second piston plate. One end of the piston rod passes through the second sleeve and is fixedly connected to one side of the filter plate.

[0016] Preferably, the bottom and both sides of the airbag are connected to flexible tubes, and the airbag is connected to four second sleeves through the flexible tubes.

[0017] Preferably, a limiting slide rail is fixedly installed around the inside of the first sleeve, and a limiting slide groove is formed around the surface of the first piston plate, and the first piston plate is slidably connected to the limiting slide rail through the limiting slide groove.

[0018] Preferably, the guiding unit includes two fixed drainage plates disposed at the top of the inner cavity of the housing, and telescopic drainage plates are slidably installed on both sides inside the fixed drainage plates, and several transverse springs are fixedly installed between the two telescopic drainage plates.

[0019] Two elastic telescopic rods are fixedly installed on one side of the top of the inner cavity of the housing. The telescopic ends of the elastic telescopic rods are fixedly connected to the top of the fixed diversion plate so as to move up and down with the size of the water flow.

[0020] Preferably, the inner wall of the fixed drainage plate is fixedly installed with several guide rails, and the inner walls of the two telescopic drainage plates are provided with several limiting grooves, and the telescopic drainage plates are slidably connected to the guide rails through the limiting grooves.

[0021] Preferably, the cleaning mechanism includes a rectangular drain pipe connected to one side of the bottom of the housing, and a sealing plate for sealing is installed through the top of one side of the rectangular drain pipe;

[0022] Two electric push rods are fixedly installed at the bottom of one side of the rectangular sewage pipe, and the telescopic ends of the two electric push rods are fixedly connected to one side of the bottom of the sealing plate.

[0023] Preferably, the filter plate has an installation opening on its surface, and the filter plate is fitted onto the surface of the two crushing impellers through the installation opening to prevent the filter plate from affecting the crushing operation of the crushing impellers.

[0024] Preferably, the two telescopic drainage plates are respectively attached to the inner wall of the filter plate and the housing to prevent foreign objects from entering the top of the fixed drainage plate.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In the anti-clogging mechanism of the present invention, the crushing component is configured so that the crushing impeller can crush foreign objects in the water. The adaptive adjustment unit can adaptively adjust the water pressure according to the water flow rate. Under low flow conditions, the foreign objects can fully contact the crushing impeller, avoiding the problem that the foreign objects are pushed away by the water flow due to insufficient contact with the crushing device, thereby improving the crushing effect. Under high flow conditions, it can avoid increasing the water inlet resistance due to the fixed flow area, thereby achieving the advantages of reducing energy consumption and energy saving operation. Furthermore, it can prevent the impeller flow channel of the centrifugal pump body from becoming blocked, ensuring the normal operation of the pump and reducing the problems of decreased centrifugal pump efficiency and increased energy consumption caused by blockage.

[0027] 2. In conjunction with the above-mentioned beneficial effects, the setting of the pushing unit further enhances the foreign matter crushing effect. When the water flow is large, the air bladder is compressed and the gas is delivered to the second sleeve through the hose, which pushes the second piston plate and piston rod to move, so that the filter plate pushes the foreign matter to the surface of the crushing impeller for crushing, to ensure that the foreign matter can be fully crushed, further reducing the risk of blockage, and also improving energy utilization efficiency, avoiding additional energy consumption caused by insufficient crushing of foreign matter;

[0028] 3. The present invention, through the setting of the cleaning mechanism, can clean up broken foreign objects inside the shell. Specifically, the opening and closing of the sealing plate is controlled by an electric push rod, which allows the rectangular drain pipe to discharge the broken foreign objects. At the same time, the fixed diversion plate and the telescopic diversion plate of the guiding unit can move up and down and extend and retract according to the water flow, guiding the water entering the shell, making the water flow smoother, avoiding the accumulation of foreign objects inside the shell, thereby further improving the convenience of cleaning and ensuring the continuous and stable operation of the centrifugal pump. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the anti-clogging mechanism in the present invention;

[0031] Figure 3 This is a cross-sectional view of the shell structure in this invention;

[0032] Figure 4 This is a schematic diagram of the crushing component structure in this invention;

[0033] Figure 5 This is a schematic diagram of the adaptive adjustment unit structure in this invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A;

[0035] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B;

[0036] Figure 8 This is a schematic diagram of the guiding unit structure in this invention;

[0037] Figure 9 This is a schematic diagram of the cleaning mechanism structure in this invention;

[0038] Figure 10 This is a schematic diagram of the mounting port structure in this invention.

[0039] In the diagram: 1. Centrifugal pump body; 2. Anti-clogging mechanism; 21. Housing; 22. First connector; 23. Filter screen; 24. Second connector; 25. Crushing assembly; 251. Motor; 252. Adaptive adjustment unit; 2521. First sleeve; 2522. First piston plate; 2523. First return spring; 2524. Transmission column; 253. Sealing baffle; 254. Crushing impeller; 255. Pushing unit; 2551. Filter plate; 2552. Airbag; 2553. Second sleeve ; 2554, Second piston plate; 2555, Second return spring; 2556, Piston rod; 2557, Hoses; 2558, Mounting port; 256, Guide unit; 2561, Fixed drain plate; 2562, Telescopic drain plate; 2563, Transverse spring; 2564, Elastic telescopic rod; 2565, Guide rail; 2566, Limiting groove; 257, Pulley; 258, Drive belt; 26, Cleaning mechanism; 261, Rectangular drain pipe; 262, Sealing plate; 263, Electric push rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-10 This invention provides a technical solution: an energy-saving anti-clogging centrifugal pump, comprising a centrifugal pump body 1, wherein an anti-clogging mechanism 2 is connected and installed at the water inlet end of the centrifugal pump body 1 to prevent clogging of the centrifugal pump body 1; wherein,

[0042] The anti-clogging mechanism 2 includes a housing 21 disposed on one side of the water inlet end of the centrifugal pump body 1. A first connector 22 is connected to one side of the housing 21. The housing 21 is connected to the water inlet end of the centrifugal pump body 1 through the first connector 22. A filter screen 23 for intercepting foreign objects is fixedly installed at the connection between the first connector 22 and the housing 21. A second connector 24 for connecting to an external water supply pipe is connected to the other side of the housing 21.

[0043] The second connector 24 is equipped with a crushing assembly 25 for crushing foreign objects in the water. The crushing assembly 25 includes a motor 251 installed at the bottom of one side of the housing 21. Two adaptive adjustment units 252 are installed through the bottom of one side of the housing 21. The output end of the motor 251 is fixedly connected to one of the adaptive adjustment units 252. Sealing baffles 253 are installed on the surfaces of the two adaptive adjustment units 252 inside the housing 21. Two crushing impellers 254 are installed at one end of the adaptive adjustment unit 252 on the side of the sealing baffle 253. One end of each of the two crushing impellers 254 is rotatably connected to the inner wall of the housing 21 to adaptively adjust the water pressure according to the water flow rate.

[0044] An adaptive adjustment unit 252 is located inside the housing 21 and a pushing unit 255 is installed on one side to push foreign objects onto the surface of the crushing impeller 254 for crushing when the water flow rate is large.

[0045] A guide unit 256 is installed at the top of the inner cavity of the housing 21 to guide the water entering the housing 21.

[0046] A cleaning mechanism 26 is connected to the bottom of the housing 21 for cleaning up broken foreign objects inside the housing 21.

[0047] Reference Figure 3 , Figure 4 as well as Figure 5 As shown, the adaptive adjustment unit 252 includes two first sleeves 2521 that are installed through the bottom of one side of the housing 21. A first piston plate 2522 is slidably installed inside the first sleeve 2521. A first return spring 2523 is fixedly installed on one side of the first piston plate 2522, and the end of the first return spring 2523 away from the first piston plate 2522 is fixedly connected to the inner wall of the first sleeve 2521. A transmission column 2524 is fixedly installed on the other side of the first piston plate 2522. One end of the transmission column 2524 passes through the first sleeve 2521 and the crushing impeller 254 in sequence and is rotatably connected to the inner wall of the housing 21. The crushing impeller 254 is installed on the surface of the transmission column 2524. Pulleys 257 are installed on the surface of both first sleeves 2521, and a transmission belt 258 is wound around the surface of both pulleys 257. The two pulleys 257 are connected by transmission belt 258.

[0048] In this embodiment, the crushing impeller 254 can crush foreign objects in the water. The adaptive adjustment unit 252 can adaptively adjust the water pressure according to the water flow rate. Under low flow conditions, the foreign objects can fully contact the crushing impeller 254, avoiding the problem of the foreign objects being pushed away by the water flow due to insufficient contact with the crushing device, thus improving the crushing effect. Under high flow conditions, it can avoid increasing the water inlet resistance due to the fixed flow area, thereby effectively preventing the impeller flow channel of the centrifugal pump body 1 from being blocked and ensuring the normal operation of the pump.

[0049] Reference Figure 4 , Figure 7 as well as Figure 10 As shown, the pushing unit 255 includes a filter plate 2551 slidably installed inside the housing 21, and the filter plate 2551 is sleeved on the surface of the two crushing impellers 254. An airbag 2552 is fixedly installed at the top between the sealing baffle 253 and the housing 21. Four second sleeves 2553 are fixedly installed around one side of the housing 21, and the four second sleeves 2553 all penetrate the sealing baffle 253 and are slidably connected to it. A second piston plate 2554 is slidably installed inside the second sleeve 2553. A second return spring 2555 is fixedly installed on one side of the filter plate 2551. The end of the second return spring 2555 away from the second piston plate 2554 is fixedly connected to the inner wall of the second sleeve 2553. A piston rod 2556 is fixedly installed on the other side of the second piston plate 2554. One end of the piston rod 2556 passes through the second sleeve 2553 and is fixedly connected to one side of the filter plate 2551. The bottom and both sides of the airbag 2552 are connected to hoses 2557. The airbag 2552 is connected to the four second sleeves 2553 through the hoses 2557.

[0050] In this embodiment, when the water flow rate is large, the airbag 2552 is pressurized, and the gas is delivered to the second sleeve 2553 through the hose 2557, which pushes the second piston plate 2554 and piston rod 2556 to move, so that the filter plate 2551 pushes the foreign objects to the surface of the crushing impeller 254 for crushing, so as to ensure that the foreign objects can be fully crushed and further reduce the risk of blockage.

[0051] Reference Figure 6 As shown, the first sleeve 2521 has a limit slide rail fixedly installed around its interior, and the first piston plate 2522 has a limit slide groove on its surface around its interior. The first piston plate 2522 is slidably connected to the limit slide rail through the limit slide groove.

[0052] In this embodiment, when the first piston plate 2522 slides within the first sleeve 2521, the limiting groove cooperates with the limiting rail to ensure the stability of the sliding of the first piston plate 2522 and prevent the first piston plate 2522 from deviating or getting stuck during sliding, which would affect the normal operation of the adaptive adjustment unit 252.

[0053] Reference Figure 3 as well as Figure 8 As shown, the guiding unit 256 includes two fixed diversion plates 2561 disposed at the top of the inner cavity of the housing 21. Telescopic diversion plates 2562 are slidably installed on both sides inside the fixed diversion plates 2561, and several transverse springs 2563 are fixedly installed between the two telescopic diversion plates 2562. Two elastic telescopic rods 2564 are fixedly installed on one side of the top of the inner cavity of the housing 21. The telescopic ends of the elastic telescopic rods 2564 are fixedly connected to the top of the fixed diversion plates 2561 for moving up and down with the size of the water flow.

[0054] In this embodiment, the fixed guide plate 2561 and the telescopic guide plate 2562 of the guide unit 256 can move up and down and extend and retract according to the water flow, so as to guide the water entering the housing 21, making the water flow smoother and preventing foreign objects from accumulating in the housing 21.

[0055] Reference Figure 8 As shown, a number of guide rails 2565 are fixedly installed on the inner wall of the fixed diversion plate 2561, and a number of limiting grooves 2566 are opened on the inner wall of the two telescopic diversion plates 2562. The telescopic diversion plates 2562 are slidably connected to the guide rails 2565 through the limiting grooves 2566.

[0056] In this embodiment, the telescopic drainage plate 2562 slides within the fixed drainage plate 2561 through the cooperation of the limiting groove 2566 and the guide rail 2565, so as to ensure the stability and smoothness of the telescopic drainage plate 2562's extension and retraction.

[0057] Reference Figure 2 , Figure 3 as well as Figure 9 As shown, the cleaning mechanism 26 includes a rectangular drain pipe 261 connected to one side of the bottom of the housing 21. A sealing plate 262 for sealing is installed through the top of one side of the rectangular drain pipe 261. Two electric push rods 263 are fixedly installed at the bottom of one side of the rectangular drain pipe 261, and the telescopic ends of the two electric push rods 263 are fixedly connected to one side of the bottom of the sealing plate 262.

[0058] In this embodiment, broken foreign objects inside the housing 21 can be cleaned. The opening and closing of the sealing plate 262 is controlled by the electric push rod 263, which allows the rectangular drain pipe 261 to discharge the broken foreign objects, so as to avoid the situation where too many foreign objects affect the water flow.

[0059] Reference Figure 10 As shown, the surface of the filter plate 2551 is provided with an installation port 2558. The filter plate 2551 is sleeved on the surface of the two crushing impellers 254 through the installation port 2558 to prevent the filter plate 2551 from affecting the crushing operation of the crushing impellers 254.

[0060] In this embodiment, the filter plate 2551 is fitted onto the surface of the crushing impeller 254 through the mounting port 2558 so as not to interfere with the rotation of the crushing impeller 254 when pushing foreign objects.

[0061] Reference Figure 3 as well as Figure 8 As shown, the two telescopic drainage plates 2562 are respectively attached to the filter plate 2551 and the inner wall of the housing 21 to prevent foreign objects from entering the top of the fixed drainage plate 2561.

[0062] In this embodiment, the telescopic drainage plate 2562 is attached to the filter plate 2551 and the inner wall of the housing 21 to form a closed space to prevent foreign objects from entering the top of the fixed drainage plate 2561 and avoid the accumulation of foreign objects from affecting its normal operation.

[0063] Working principle: When the centrifugal pump body 1 is working, water enters the housing 21 of the anti-clogging mechanism 2 through the second connector 24;

[0064] At the same time, the motor 251 drives an adaptive adjustment unit 252 to rotate, and drives another adaptive adjustment unit 252 to rotate synchronously through the pulley 257 and the transmission belt 258, so that the crushing impeller 254 crushes foreign objects in the water.

[0065] During the water flow process, the first piston plate 2522 of the adaptive adjustment unit 252 slides in the first sleeve 2521 according to the water flow rate, compressing or stretching the first return spring 2523 to achieve adaptive adjustment of water pressure. When the water flow rate is large, the air bag 2552 is pressurized, and the gas enters the second sleeve 2553 through the hose 2557, pushing the second piston plate 2554 and piston rod 2556, so that the filter plate 2551 pushes the foreign objects to the surface of the crushing impeller 254 for crushing.

[0066] Meanwhile, the fixed guide plate 2561 and the telescopic guide plate 2562 of the guide unit 256 will move up and down and extend and retract according to the water flow size, guide the water entering the housing 21, and allow the broken water to enter the centrifugal pump body 1 after being filtered by the filter screen 23.

[0067] Finally, when it is necessary to clean the broken foreign objects inside the housing 21, start the electric push rod 263 to open the sealing plate 262 and allow the foreign objects to be discharged through the rectangular drain pipe 261.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving, anti-clogging centrifugal pump, comprising a centrifugal pump body (1), characterized in that: The centrifugal pump body (1) is equipped with an anti-clogging mechanism (2) at its inlet end to prevent blockage of the centrifugal pump body (1); wherein, The anti-clogging mechanism (2) includes a housing (21) disposed on one side of the water inlet end of the centrifugal pump body (1). A first connector (22) is connected to one side of the housing (21). The housing (21) is connected to the water inlet end of the centrifugal pump body (1) through the first connector (22). A filter screen (23) for intercepting foreign objects is fixedly installed at the connection between the first connector (22) and the housing (21). A second connector (24) for connecting to an external water supply pipe is connected to the other side of the housing (21). The second connector (24) is equipped with a crushing assembly (25) for crushing foreign objects in the water. The crushing assembly (25) includes a motor (251) installed at the bottom of one side of the housing (21). Two adaptive adjustment units (252) are installed through the bottom of one side of the housing (21). The output end of the motor (251) is fixedly connected to one of the adaptive adjustment units (252). The surfaces of the two adaptive adjustment units (252) located inside the housing (21) are equipped with sealing baffles (253). Two crushing impellers (254) are installed at one end of the adaptive adjustment unit (252) located on the side of the sealing baffle (253). One end of each of the two crushing impellers (254) is rotatably connected to the inner wall of the housing (21) for adaptively adjusting the water pressure according to the water flow rate. The adaptive adjustment unit (252) is equipped with a pushing unit (255) on one side inside the housing (21) to push foreign objects onto the surface of the crushing impeller (254) for crushing when the water flow rate is large; A guide unit (256) is installed at the top of the inner cavity of the housing (21) for guiding water entering the interior of the housing (21); The bottom of the housing (21) is connected to a cleaning mechanism (26) for cleaning broken foreign objects inside the housing (21).

2. The energy-saving anti-clogging centrifugal pump according to claim 1, characterized in that: The adaptive adjustment unit (252) includes two first sleeves (2521) that are installed through the bottom of one side of the housing (21). A first piston plate (2522) is slidably installed inside the first sleeve (2521). A first return spring (2523) is fixedly installed on one side of the first piston plate (2522), and the end of the first return spring (2523) away from the first piston plate (2522) is fixedly connected to the inner wall of the first sleeve (2521). A transmission column (2524) is fixedly installed on the other side of the first piston plate (2522). One end of the transmission column (2524) passes through the first sleeve (2521) and the crushing impeller (254) in sequence and is rotatably connected to the inner wall of the housing (21). The crushing impeller (254) is installed on the surface of the transmission column (2524). Both of the first sleeves (2521) are equipped with pulleys (257), and both of the pulleys (257) are wound with a drive belt (258), and the two pulleys (257) are connected by the drive belt (258).

3. The energy-saving anti-clogging centrifugal pump according to claim 1, characterized in that: The pushing unit (255) includes a filter plate (2551) slidably installed inside the housing (21), and the filter plate (2551) is sleeved on the surface of the two crushing impellers (254). An air bag (2552) is fixedly installed on the top between the sealing baffle (253) and the housing (21). Four second sleeves (2553) are fixedly installed on all four sides of one side of the housing (21), and the four second sleeves (2553) all penetrate the sealing baffle (253) and are slidably connected to it. The second sleeve (2553) has a second piston plate (2554) slidably installed inside, and a second return spring (2555) is fixedly installed on one side of the second piston plate (2554). The end of the second return spring (2555) away from the second piston plate (2554) is fixedly connected to the inner wall of the second sleeve (2553). A piston rod (2556) is fixedly installed on the other side of the second piston plate (2554). One end of the piston rod (2556) passes through the second sleeve (2553) and is fixedly connected to one side of the filter plate (2551).

4. The energy-saving anti-clogging centrifugal pump according to claim 3, characterized in that: The airbag (2552) has hoses (2557) connected to its bottom and both sides, and the airbag (2552) is connected to four second sleeves (2553) through the hoses (2557).

5. An energy-saving anti-clogging centrifugal pump according to claim 2, characterized in that: The first sleeve (2521) has a fixed locating slide rail installed around its interior, and the first piston plate (2522) has a locating slide groove on its surface around its interior. The first piston plate (2522) is slidably connected to the locating slide rail through the locating slide groove.

6. An energy-saving anti-clogging centrifugal pump according to claim 3, characterized in that: The guiding unit (256) includes two fixed drainage plates (2561) disposed at the top of the inner cavity of the housing (21). Telescopic drainage plates (2562) are slidably installed on both sides inside the fixed drainage plates (2561), and several transverse springs (2563) are fixedly installed between the two telescopic drainage plates (2562). Two elastic telescopic rods (2564) are fixedly installed on one side of the top of the inner cavity of the housing (21). The telescopic ends of the elastic telescopic rods (2564) are fixedly connected to the top of the fixed diversion plate (2561) so as to move up and down with the size of the water flow.

7. An energy-saving anti-clogging centrifugal pump according to claim 6, characterized in that: The inner wall of the fixed diversion plate (2561) is fixedly installed with several guide rails (2565), and the inner walls of the two telescopic diversion plates (2562) are provided with several limiting grooves (2566). The telescopic diversion plates (2562) are slidably connected to the guide rails (2565) through the limiting grooves (2566).

8. The energy-saving anti-clogging centrifugal pump according to claim 1, characterized in that: The cleaning mechanism (26) includes a rectangular drain pipe (261) connected to one side of the bottom of the housing (21), and a sealing plate (262) for sealing is installed through the top of one side of the rectangular drain pipe (261). Two electric push rods (263) are fixedly installed on the bottom of one side of the rectangular sewage pipe (261), and the telescopic ends of the two electric push rods (263) are fixedly connected to one side of the bottom of the sealing plate (262).

9. An energy-saving anti-clogging centrifugal pump according to claim 3, characterized in that: The filter plate (2551) has an installation port (2558) on its surface. The filter plate (2551) is fitted onto the surface of the two crushing impellers (254) through the installation port (2558) to prevent the filter plate (2551) from affecting the crushing operation of the crushing impellers (254).

10. An energy-saving anti-clogging centrifugal pump according to claim 6, characterized in that: The two telescopic drainage plates (2562) are respectively attached to the filter plate (2551) and the inner wall of the housing (21) to prevent foreign objects from entering the top of the fixed drainage plate (2561).

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