Submersible pump with anti-blocking function

Abstract

The application discloses a submersible pump with a blockage prevention function, comprising a motor, a pump body and a filter cartridge. The power output by the motor drives an impeller on one hand, and drives a cleaning device arranged in the filter cartridge to rotate through a magnetic coupling mode on the other hand after being decelerated by a planetary gear deceleration mechanism arranged in a gear cylinder. Meanwhile, part of the pumped high-pressure water is introduced into a pressure cavity in the cleaning head through a backflow pipeline, and the water pressure in the pressure cavity is used to push the cleaning head to tightly abut against the inner wall of the filter cartridge in the radial direction and to perform a fixed-point and high-pressure backwashing on the filter cartridge through a strip-shaped water outlet arranged on the cleaning head. The application realizes the water pumping and self-cleaning functions by using a single motor without an additional driving source. The non-contact magnetic transmission ensures the absolute sealing of the transmission process of the cleaning part. The device has a compact structure and can complete efficient and reliable self-cleaning while continuously pumping water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of submersible pumps, in particular to a submersible pump with anti-blocking function. BACKGROUND

[0002] As a common underwater water lifting equipment, submersible pumps are widely used in fields such as farmland irrigation, municipal drainage, industrial circulation and deep well water extraction. In actual application, submersible pumps often need to work in water bodies containing suspended particles, fine sand, algae, fiber impurities and other pollutants. In order to prevent these impurities from entering the pump body and wearing or jamming the impeller and other precision components, a filter screen or filter cartridge is usually arranged at the water inlet of the pump;

[0003] However, during operation, impurities will continuously adhere to the surface of the filter cartridge, and with the accumulation of running time, it is easy to cause the blockage of the filter cartridge. Once the filter cartridge is blocked, it will cause the water pump to increase the water inlet resistance, and the flow and lift will decrease significantly, and the motor load will increase, and the energy consumption will increase, and even the motor may be burned out due to overload. In addition, frequent blockage means that the water pump needs to be lifted from the water frequently for manual cleaning, which not only interrupts the normal operation process and reduces the work efficiency, but also brings heavy maintenance labor and downtime cost;

[0004] In the patent with publication number CN219639149U, a submersible pump for preventing blockage of engineering turbid water is disclosed, which comprises a submersible pump body, a water inlet is arranged at the bottom of the submersible pump body, a filter screen is mounted at the bottom of the water inlet, a support seat is mounted at the bottom of the filter screen, a waterproof motor is fixedly installed in the support seat, a connecting rod is fixedly connected to the output end of the waterproof motor, a rotating groove is formed in the support seat above the waterproof motor and matched with the connecting rod, an installation seat is fixedly connected to one end of the connecting rod, the installation seat penetrates the rotating groove and the support seat in sequence and extends to the outside of the support seat, and a cleaning assembly is rotatably connected to the top end of the installation seat. It can clean the filter screen, avoid the blockage of the filter screen by impurities in the turbid water, ensure the efficiency of the submersible pump for draining water, and ensure the normal operation of the equipment;

[0005] However, the existing filter cartridge cleaning method mostly adopts the cleaning method of brushing the outer surface. For strongly adhered sludge or fibrous impurities, the rotating cleaning brush may not be able to effectively peel them off, but may further crush and compact them, aggravating the local blockage of the filter cartridge. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a submersible pump with anti-blocking function, which can continuously and efficiently complete the self-cleaning function, effectively prevent the blockage of the filter cartridge, and improve the performance, reliability and service life of the whole machine.

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: A submersible pump with anti-blocking function, comprising a motor, a gear cylinder is arranged above the motor, a plurality of connecting rods I are arranged above the gear cylinder, a connecting ring is arranged above the plurality of connecting rods I, a plurality of pump housings are arranged above the connecting ring, the uppermost one of the plurality of pump housings is provided with an end cover, a drain pipe is arranged on the end cover, a filter cylinder is arranged between the connecting ring and the gear cylinder and on the inner side of the plurality of connecting rods I;

[0008] A ring groove with an opening downward is formed in the connecting ring, an upper swivel ring is rotatably connected in the ring groove, an installation box is fixedly connected to the bottom of the upper swivel ring, a through hole for connecting the installation box and the ring groove is formed in the upper swivel ring, a backflow port I is arranged on the end cover and communicates with the inside of the end cover, a backflow port II is arranged on the connecting ring and communicates with the ring groove, the backflow port I and the backflow port II are connected by a backflow pipe, a cleaning head is slidably arranged on one side of the installation box, the cleaning head can move along the radial direction of the filter cylinder and abut on the inner side surface of the filter cylinder, a plurality of water injection ports are formed in the cleaning head, and the total flow area of the plurality of water injection ports is smaller than the flow area of the through hole.

[0009] A reduction mechanism is arranged in the gear cylinder, the power input end of the reduction mechanism is connected with the power output shaft of the motor, a plurality of driving magnets are arranged in an annular array on the power output end of the reduction mechanism, a recess is arranged on the upper wall of the gear cylinder, a lower swivel ring is rotatably arranged in the recess, the bottom of the lower swivel ring is fixedly connected with the installation box, and a plurality of driven magnets corresponding to the driving magnets are arranged in an annular array on the bottom of the lower swivel ring.

[0010] Preferably, the reduction mechanism comprises a support I and a support II rotatably arranged in the gear cylinder, an inner gear ring I and an inner gear ring II are fixedly arranged on the inner surface of the gear cylinder, a driving gear is fixedly arranged on the power output shaft of the motor, three planetary gears I are rotatably connected below the support I, the inner side of the three planetary gears I is simultaneously engaged with the driving gear, and the outer side of the three planetary gears I is simultaneously engaged with the inner gear ring I, a driving gear ring is fixedly arranged above the support I, three planetary gears II are rotatably connected below the support II, the inner side of the three planetary gears II is simultaneously engaged with the driving gear ring, and the outer side of the three planetary gears II is simultaneously engaged with the inner gear ring II, the plurality of driving magnets are uniformly arranged on the upper surface of the support II, a mechanical seal is arranged at the center of the upper wall of the gear cylinder, and the power output shaft of the motor is arranged in the mechanical seal.

[0011] Preferably, the plurality of water injection ports are vertically extended strips, the spacing, number and width of the plurality of water injection ports are configured so that at least one water injection port can be opposite to at least one row of filter holes on the wall surface of the filter cylinder and maintain fluid communication when the cleaning head rotates circumferentially in the filter cylinder.

[0012] Preferably, the end cover is fixedly provided with an axle seat, a positioning cylinder is fixedly arranged below the connecting ring, a rotating shaft is rotatably arranged in the positioning cylinder, the rotating shaft penetrates the connecting ring and the plurality of pump housings and is rotatably connected to the axle seat, the impeller in each pump housing is fixedly connected to the rotating shaft, and the bottom of the rotating shaft is connected to the top of the motor power output shaft.

[0013] Preferably, the top of the motor power output shaft is provided with a female joint, and the bottom of the rotating shaft is provided with a male joint capable of being detachably connected to the female joint.

[0014] Preferably, the cleaning head is provided with an extension plate on each side.

[0015] Preferably, the filter cylinder adopts a cylindrical structure with a smooth inner surface, the upper surface of the gear cylinder and the lower surface of the connecting ring are both provided with clamping grooves, and the upper and lower ends of the filter cylinder are embedded in the clamping grooves.

[0016] Preferably, a plurality of reinforcing rods are fixedly arranged between the upper rotating ring and the lower rotating ring.

[0017] Preferably, a plurality of connecting rods II are arranged above the connecting ring, and the end cover is fixed to the top of the plurality of connecting rods II by bolts, so that the plurality of pump housings are pressed on the connecting ring by the end cover.

[0018] The present application provides a submersible pump with anti-blocking function, which has the following advantages:

[0019] The present application realizes online and full-automatic cleaning through the built-in cleaning head and the high-pressure backwashing mode inside the filter cylinder. During the rotation of the cleaning head, the water jet can always be aligned with and cover at least one row of filter holes. By utilizing the pressure difference between the pump outlet and the inlet, high-pressure water is accurately sprayed in the local filter cylinder area, the flushing force is concentrated, and the cleaning efficiency is high. The coverage of the cleaning head on the inner wall of the filter cylinder effectively isolates the external water flow, creating an ideal pressure difference environment for backwashing, avoiding water flow interference during cleaning, and ensuring the backwashing effect.

[0020] Since the total flow cross-sectional area of the water jet is designed to be smaller than the cross-sectional area of the water inlet hole, a pressure chamber is naturally formed in the installation box, and the cleaning head can be abutted on the inner side surface of the filter cylinder with a certain pressing force. When the cleaning head or the filter cylinder is worn, they can still be tightly attached, reducing the gap between the filter cylinder and the cleaning head and improving the utilization rate of the backwashing water flow. In addition, when the filter cylinder is severely blocked at a certain position, the water outlet of the water jet is blocked, the pressure in the chamber instantaneously rises, and the pressing force of the cleaning head on that part is automatically and rapidly increased, forming a better sealing effect at the position most in need of cleaning and removing stubborn blockages in that position.

[0021] The power for driving the cleaning device to rotate is directly derived from the main motor of the submersible pump, and is transmitted through the built-in speed reduction mechanism and magnetic coupling transmission. No independent drive motor is needed for the cleaning function, which simplifies the overall structure, reduces the manufacturing cost and energy consumption, and realizes the high integration of the system.

[0022] The cleaning device is driven by the magnetic coupling transmission mode. The driving magnet and the driven magnet are completely physically isolated by the non-magnetic upper wall of the gear cylinder, and no mechanical shaft penetrates the cylinder wall, which fundamentally eliminates the risk of dynamic seal leakage here, and ensures the absolute sealing of the transmission system and the stability of long-term operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective view of the present application;

[0024] Figure 2 is an exploded perspective view of the present application;

[0025] Figure 3 is a front view of the present application;

[0026] Figure 4 is Figure 3 a sectional view of A-A in the middle;

[0027] Figure 5 is Figure 4 a local enlarged view of A;

[0028] Figure 6 is Figure 3 a sectional view of B-B in the middle;

[0029] Figure 7 is an internal exploded perspective view of the gear cylinder;

[0030] Figure 8 is a perspective view of the upper swivel, the lower swivel, the mounting box and the cleaning head Figure 1 ;

[0031] Figure 9 is a perspective view of the upper swivel, the lower swivel, the mounting box and the cleaning head Figure 2 ;

[0032] Figure 10 is a sectional view of the connecting ring.

[0033] In the figure: 1, motor; 2, gear cylinder; 3, connecting rod one; 4, connecting ring; 5, filter cylinder; 6, pump shell; 7, end cover; 8, drain pipe; 9, backflow pipe; 10, upper swivel; 11, mounting box; 12, cleaning head; 13, lower swivel; 14, reinforcing rod; 15, water jet; 16, through hole; 17, ring groove; 18, backflow port one; 19, backflow port two; 20, support one; 21, planetary gear one; 22, driving gear; 23, driving gear ring; 24, support two; 25, planetary gear two; 26, driving magnet; 27, inner gear ring one; 28, inner gear ring two; 29, groove; 30, mechanical seal; 31, sub connector; 32, driven magnet; 33, positioning cylinder; 34, rotating shaft; 35, female connector; 36, shaft seat; 37, impeller; 38, extension plate; 39, clamping groove; 40, connecting rod two. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0035] Please refer to Figures 1-10 The present application provides a technical solution: a submersible pump with anti-blocking function, comprising a motor 1, a gear cylinder 2 is arranged above the motor 1, a plurality of connecting rods one 3 are arranged above the gear cylinder 2, a connecting ring 4 is arranged above the plurality of connecting rods one 3, a plurality of pump shells 6 are arranged above the connecting ring 4, the uppermost one of the plurality of pump shells 6 is provided with an end cover 7, the end cover 7 is provided with a drain pipe 8, and a filter cylinder 5 is arranged between the connecting ring 4 and the gear cylinder 2 and on the inner side of the plurality of connecting rods one 3;

[0036] Please refer to Figure 5 、 Figure 8 、 Figure 9 、 Figure 10The connecting ring 4 is provided with a ring groove 17 with an opening downward, the upper swivel ring 10 is rotatably connected in the ring groove 17, forming a rotary joint structure, the mounting box 11 is fixedly connected to the bottom of the upper swivel ring 10, the mounting box 11 can rotate in the circumferential direction of the filter cartridge 5 along with the upper swivel ring 10, the through hole 16 is arranged in the upper swivel ring 10 and is used for connecting the mounting box 11 and the ring groove 17, the end cover 7 is provided with the backflow port one 18 which is communicated with the inside of the end cover 7, the connecting ring 4 is provided with the backflow port two 19 which is communicated with the ring groove 17, the backflow pipe 9 is arranged between the backflow port one 18 and the backflow port two 19, the cleaning head 12 is slidably arranged on one side of the mounting box 11, the cleaning head 12 can move along the radial direction of the filter cartridge 5 and abut against the inner side surface of the filter cartridge 5, part of the filter cartridge 5 can be covered by the cleaning head 12, so that the external water cannot flow into the pump body through the filter holes of the part, and a good environmental condition is provided for backwashing, the plurality of water spraying ports 15 are arranged on the cleaning head 12, the total flow area of the plurality of water spraying ports 15 is smaller than the flow area of the through hole 16, so that a throttling effect on the water flow is formed, when the water pump works, part of the pumped water can flow into the mounting box 11 through the backflow pipe 9 and the connecting ring 4, and finally is sprayed to the filter cartridge 5 through the water spraying ports 15, so that the backwashing of the filter cartridge 5 is realized, when the high-pressure water enters the mounting box 11, the cleaning head 12 is pushed to move outward, so that the cleaning head 12 can always abut against the inner side surface of the filter cartridge 5, so that the cleaning head 12 or the filter cartridge 5 can still be tightly attached after being worn, and the gap between the filter cartridge 5 and the cleaning head 12 is reduced;

[0037] Please refer to Figure 5 、 Figure 7 、 Figure 9 、 Figure 10 The gear cylinder 2 is provided with a speed reduction mechanism, a power input end of the speed reduction mechanism is connected with a power output shaft of the motor 1, a plurality of driving magnets 26 are arranged in an annular array on a power output end of the speed reduction mechanism, a recess 29 is arranged on an upper wall of the gear cylinder 2, the lower swivel ring 13 is rotatably arranged in the recess 29, the mounting box 11 is fixedly connected to the bottom of the lower swivel ring 13, a plurality of driven magnets 32 corresponding to the driving magnets 26 are arranged in an annular array on the bottom of the lower swivel ring 13, the magnetic coupling transmission is formed through the plurality of driving magnets 26 and the plurality of driven magnets 32, the upper wall of the gear cylinder 2 is made of non-magnetic austenitic stainless steel, such as 304, 304L, 316 or 316L stainless steel, so as to ensure that the rotating magnetic field can penetrate the gear cylinder 2 without damage or with low damage, for the driving part of the lower swivel ring 13, the magnetic coupling transmission can meet the power transmission while ensuring the sealing of the gear cylinder 2, and the stability of the equipment is improved.

[0038] Specifically, please refer to Figure 5 、 Figure 7The reduction mechanism comprises a support 20 and a support 24 rotatably arranged in the gear cylinder 2, the inner surface of the gear cylinder 2 is fixedly provided with an inner ring gear 27 and an inner ring gear 28, the driving gear 22 is fixedly arranged on the power output shaft of the motor 1, three planetary gears 21 are rotatably connected below the support 20, the inner side of the three planetary gears 21 is simultaneously engaged with the driving gear 22, and the outer side is simultaneously engaged with the inner ring gear 27, the driving ring gear 23 is fixedly arranged above the support 20, the power output shaft of the motor 1 can pass through the driving ring gear 23 without contact, three planetary gears 25 are rotatably connected below the support 24, the inner side of the three planetary gears 25 is simultaneously engaged with the driving ring gear 23, and the outer side is simultaneously engaged with the inner ring gear 28, and the above structure constitutes a two-stage planetary gear reduction mechanism, a plurality of driving magnets 26 are uniformly arranged on the upper surface of the support 24, the speed is reduced and the torque is increased through the two-stage planetary magnetic force reduction structure, the motor is used to drive the cleaning head 12 to move slowly in the circumferential direction in the filter cylinder 5, the pump body structure is more compact, the mechanical seal 30 is arranged at the center of the upper wall of the gear cylinder 2, the power output shaft of the motor 1 is arranged in the mechanical seal 30, and the sealing property of the connection between the power output shaft of the motor 1 and the gear cylinder 2 is ensured through the mechanical seal 30.

[0039] Further, Figure 6 、 Figure 8 、 Figure 9 A plurality of water spray openings 15 are vertically extended strips, the spacing, number and width of the plurality of water spray openings 15 are configured to enable at least one water spray opening 15 to be opposite to at least one row of filter holes on the wall surface of the filter cylinder 5 to maintain fluid communication at any position when the cleaning head 12 rotates in the circumferential direction in the filter cylinder 5.

[0040] Further, Figure 4 、 Figure 5 、 Figure 10 A shaft seat 36 is fixedly arranged in the end cover 7, a positioning cylinder 33 is fixedly arranged below the connecting ring 4, a rotating shaft 34 is rotatably arranged in the positioning cylinder 33, the rotating shaft 34 penetrates the connecting ring 4 and the plurality of pump housings 6 and is rotatably connected to the shaft seat 36, the impeller 37 in each pump housing 6 is fixedly connected to the rotating shaft 34, the bottom of the rotating shaft 34 is connected to the top of the power output shaft of the motor 1, the power of the motor is transmitted to the impeller 37 through the rotating shaft 34, and the connecting ring 4 and the plurality of pump housings 6 can be integrated into a whole and separated from the gear cylinder 2 through the rotating shaft 34, so that the filter cylinder 5 is convenient to replace and maintain.

[0041] Further, please refer to Figure 5 、 Figure 7 、 Figure 10 The top of the power output shaft of the motor 1 is provided with a female connector 31, and the bottom of the rotating shaft 34 is provided with a male connector 35 which can be detachably connected with the female connector 31, so that the rotating shaft 34 and the power output shaft of the motor 1 can be separated.

[0042] Further, please refer to Figure 8 , Figure 9 , the extension plate 38 is arranged on both sides of the cleaning head 12, the area of the end surface of the cleaning head 12 is increased through the extension plate 38, the covering width of the filter cartridge 5 is improved, and the shielding area of the filter cartridge 5 is further improved.

[0043] Further, please refer to Figure 5 , Figure 6 , Figure 7 , Figure 10 The filter cartridge 5 adopts a cylindrical structure with a smooth inner surface, so that the cleaning head 12 can smoothly slide along the inner surface of the filter cartridge 5, and the cleaning head 12 can be precisely matched with the inner wall of the filter cartridge 5; the upper surface of the gear cylinder 2 and the lower surface of the connecting ring 4 are provided with clamping grooves 39, and the upper and lower ends of the filter cartridge 5 are embedded in the clamping grooves 39; the filter cartridge 5 is limited by the clamping grooves 39, so that the filter cartridge 5 is not easily deformed.

[0044] Further, please refer to Figure 8 , Figure 9 A plurality of reinforcing rods 14 are fixedly arranged between the upper swivel ring 10 and the lower swivel ring 13, so as to prevent the upper swivel ring 10 and the lower swivel ring 13 from being deformed and improve the strength.

[0045] Further, please refer to Figure 1 , Figure 2 A plurality of connecting rods two 40 are arranged above the connecting ring 4, and the end cover 7 is fixed on the top of the plurality of connecting rods two 40 by bolts; the plurality of pump housings 6 are pressed on the connecting ring 4 by the end cover 7, so that the connecting ring 4, the plurality of pump housings 6 and the end cover 7 are integrated as a whole, and the disassembly steps are reduced when the filter cartridge 5 is replaced.

[0046] The working principle and use process of the present application are as follows: in use, the water delivery pipeline is connected with the drain pipe 8, and the submersible pump is placed underwater. The motor 1 is started, and the output shaft thereof drives the rotating shaft 34 and the impeller 37 to rotate to suck external water into the pump, remove impurities in the water through the filter cartridge 5, and finally discharge the water through the drain pipe 8 to complete the main water pumping function.

[0047] On the other hand, the output power of the motor 1 is reduced and increased in torque by the two-stage planetary gear reduction mechanism. After reduction, the driving magnet 26 on the support two 24 is driven to rotate at low speed. The rotating magnetic field of the driving magnet 26 penetrates the upper wall of the gear cylinder 2 made of non-magnetic material and drives the external driven magnet 32 to rotate synchronously through magnetic coupling, and further drives the lower swivel ring 13, the mounting box 11 and the cleaning head 12 to move along the inner wall of the filter cartridge 5 at a low speed.

[0048] At the same time, the high pressure water produced by the pump is partly led out through the backflow port 18 on the end cover 7, through the backflow pipe 9, the backflow port 2 19 on the connecting ring 4 and the ring groove 17, and finally through the through hole 16 into the pressure cavity inside the installation box 11. Since the total flow area of the water jet port 15 is designed to throttle the water flow, the water flow into the pressure cavity is greater than the water flow out of the water jet port 15, thereby establishing a working pressure in the cavity. This pressure pushes the cleaning head 12 to move radially outward and always abuts against the inner surface of the filter cartridge 5 with a certain pressing force, so that the cleaning head 12 or the filter cartridge 5 can still be tightly attached after wear, reducing the gap between the filter cartridge 5 and the cleaning head 12.

[0049] In addition, when the cleaning head 12 moves to the area of the filter cartridge 5 where impurities are thicker and more seriously blocked, the backwashing water flow is temporarily blocked, resulting in a decrease in the amount of water flowing out of the water jet port 15. This will immediately cause the water pressure in the pressure cavity inside the installation box 11 to further increase, thereby automatically and instantaneously increasing the pressing force of the cleaning head 12 on the filter cartridge. This can form a better sealing effect at the part that needs cleaning the most and produce a stronger flushing force, thereby efficiently removing stubborn blockages at that part.

[0050] In this state, high-pressure water is sprayed at high speed from the water jet port 15 of the cleaning head 12, directly acting on the local filter cartridge area that is being blocked by the cleaning head 12. By using the pressure difference between the high pressure at the pump outlet and the low pressure at the inlet, efficient point backwashing of the filter cartridge is achieved. With the continuous rotation of the cleaning head 12, the inner surface of the entire filter cartridge 5 is sequentially and thoroughly cleaned.

[0051] In summary, the device realizes full-automatic, online self-cleaning of the filter cartridge 5 while continuously and normally pumping water, significantly improving the filtering efficiency, cleaning effect and working stability of the pump, and effectively preventing the problem of reduced pumping efficiency caused by filter cartridge blockage.

[0052] In the present application, the sealing structure between each component is adaptively set by those skilled in the art, and the specific structure will not be described in detail.

[0053] Although embodiments of the present application 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 therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A submersible pump with anti-blocking function, characterized in that: The utility model provides a kind of water pump, including motor (1), gear cylinder (2) is provided above motor (1), multiple connecting rods one (3) are provided above gear cylinder (2), connecting ring (4) is provided above multiple connecting rods one (3), multiple pump shells (6) are provided above connecting ring (4), the uppermost one of multiple pump shells (6) is provided with end cover (7), drain pipe (8) is provided on end cover (7), filter cylinder (5) is arranged between connecting ring (4) and gear cylinder (2) and is located the inside of multiple connecting rods one (3); Ring groove (17) is opened in connecting ring (4) inside, upper swivel ring (10) is rotatably connected in ring groove (17), installation box (11) is fixedly connected to the bottom of upper swivel ring (10), the through hole (16) for making installation box (11) and ring groove (17) communicate is opened in upper swivel ring (10), backflow port one (18) is provided on end cover (7) and is communicated with its inside, backflow port two (19) is provided on connecting ring (4) and is communicated with ring groove (17), backflow pipe (9) is connected between backflow port one (18) and backflow port two (19), cleaning head (12) is slidably arranged on one side of installation box (11), cleaning head (12) can be moved along the radial direction of filter cylinder (5) and abuts on the inside surface of filter cylinder (5), multiple water outlets (15) are opened on cleaning head (12), and the total flow-through cross-sectional area of multiple water outlets (15) is less than the flow-through cross-sectional area of through hole (16); Gear cylinder (2) is provided with speed reduction mechanism, the power input end of speed reduction mechanism is connected with motor (1) power output shaft, and the power output end of speed reduction mechanism is annular array with multiple driving magnets (26), the upper wall of gear cylinder (2) is provided with recess (29), and lower swivel ring (13) is rotatably arranged in recess (29), and the bottom of installation box (11) is fixedly connected on lower swivel ring (13), and the bottom of lower swivel ring (13) is annular array with multiple driven magnets (32) corresponding to multiple driving magnets (26).

2. The submersible pump with anti-blocking function according to claim 1, characterized in that, Speed reduction mechanism includes support one (20) and support two (24) rotatably arranged in gear cylinder (2), and the inner surface of gear cylinder (2) is fixedly provided with inner gear ring one (27) and inner gear ring two (28), and the driving gear (22) is fixedly arranged on motor (1) power output shaft, three planetary gears one (21) are rotatably connected below support one (20), and the inner side of three planetary gears one (21) is simultaneously engaged with driving gear (22), and the outer side is simultaneously engaged with inner gear ring one (27), and driving gear ring (23) is fixedly arranged above support one (20), three planetary gears two (25) are rotatably connected below support two (24), and the inner side of three planetary gears two (25) is simultaneously engaged with driving gear ring (23), and the outer side is simultaneously engaged with inner gear ring two (28), and multiple driving magnets (26) are evenly arranged on the upper surface of support two (24), and mechanical seal (30) is arranged at the center of the upper wall of gear cylinder (2), and motor (1) power output shaft is arranged in mechanical seal (30).

3. The submersible pump with anti-blocking function according to claim 1, characterized in that, The plurality of water spray openings (15) are vertically extending strips, the spacing, number and width of the plurality of water spray openings (15) are configured so that at least one water spray opening (15) can be opposite to at least one row of filter holes on the wall of the filter cartridge (5) to maintain fluid communication when the cleaning head (12) rotates circumferentially in the filter cartridge (5) at any position.

4. The submersible pump with anti-blocking function according to claim 1, characterized in that, The end cover (7) is fixedly provided with a shaft seat (36), the connecting ring (4) is fixedly provided with a positioning cylinder (33) below, the positioning cylinder (33) is rotatably provided with a rotating shaft (34), the rotating shaft (34) penetrates the connecting ring (4) and the plurality of pump housings (6) and is rotatably connected to the shaft seat (36), the impeller (37) in each pump housing (6) is fixedly connected to the rotating shaft (34), and the bottom of the rotating shaft (34) is connected to the top of the power output shaft of the motor (1).

5. The submersible pump with anti-blocking function according to claim 4, characterized in that, The top of the power output shaft of the motor (1) is provided with a female connector (31), and the bottom of the rotating shaft (34) is provided with a male connector (35) which can be detachably connected to the female connector (31).

6. The submersible pump with anti-blocking function according to claim 1, characterized in that, The cleaning head (12) is provided with an extension plate (38) on both sides.

7. The submersible pump with anti-blocking function according to claim 1, characterized in that, The filter cartridge (5) adopts a cylindrical structure with a smooth inner surface, the upper surface of the gear cylinder (2) and the lower surface of the connecting ring (4) are both provided with a clamping groove (39), and the upper and lower ends of the filter cartridge (5) are embedded in the clamping grooves (39).

8. The submersible pump with anti-blocking function according to claim 1, characterized in that, A plurality of reinforcing rods (14) are fixedly arranged between the upper rotating ring (10) and the lower rotating ring (13).

9. The submersible pump with anti-blocking function according to claim 1, characterized in that, The connecting ring (4) is provided with a plurality of connecting rods two (40) above, the end cover (7) is fixed on the top of the plurality of connecting rods two (40) by bolts, and the plurality of pump housings (6) are pressed on the connecting ring (4) by the end cover (7).

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