Filtering and lifting device of limited space pump and using method of filtering and lifting device

Abstract

The invention provides a filtering and lifting device of a limited space pump and a using method of the filtering and lifting device. The filtering and lifting device comprises a pump barrel and a water pump, a support is arranged on the pump barrel, a winch is arranged on the support, an opening of the water pump is upward, a communicated barrel is arranged on the water pump, a detachable filtering barrel is arranged on the barrel, and a locking adjusting device is arranged on one side of the barrel. And a springback mechanism is arranged on the locking adjusting device. In the whole process, a large truck crane is not needed for hoisting, the equipment loss is small, and the cost input is low. In the whole process, a worker does not need to dive underwater to disassemble the connecting pipeline of the pump, the diving operation risk is avoided, the working efficiency is improved, and manpower and material resources are greatly saved. Meanwhile, the top of the water pump can be cleaned regularly, and the service life of the water pump is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of water treatment, and particularly to a filtering and lifting device for a pump in a limited space and a using method thereof. Background Art

[0002] With the development of the city, the number of residents living around the pumping station has increased, and the amount of flocculent garbage mixed in the upstream water has also increased, resulting in frequent jamming of pumps and grille machines, affecting the drainage flow. Each pumping station needs to be lifted and cleaned twice a month on average. Since all pumping stations are outdoor integrated pumping stations without fixed lifting devices such as cranes, only truck-mounted cranes can be used to lift the pumps and grille machines. In the long run, not only the operation and maintenance cost is high, but also the timeliness is low. In case of an emergency, the crane cannot arrive at the scene in time, affecting the on-site troubleshooting.

[0003] At the same time, the pump is connected to the pipeline in the pump barrel. Every time the pump is lifted, the staff needs to dive underwater to disassemble the connecting pipeline of the pump, and then lift it by a truck-mounted crane. The diving operation has a high risk. At the same time, the working efficiency of the staff underwater is low, and the time cost is high. The pump itself is heavy, and the whole lifting of the pump is time-consuming and laborious, with large equipment loss and high cost investment. During the lifting process of the truck-mounted crane, if the operation is improper or the equipment fails, there may be a risk of the pump body falling, injuring the on-site personnel or damaging the surrounding equipment. Summary of the Invention

[0004] The present invention provides a filtering and lifting device for a pump in a limited space and a using method thereof, which solves the problems that when the pump is blocked, it is necessary to lift it by a truck-mounted crane and the staff dive underwater for treatment, the whole lifting of the pump is time-consuming and laborious, with large equipment loss and high cost investment, and there is a risk of the pump body falling; the diving operation of the staff has a high risk, and at the same time, the working efficiency of the staff underwater is low.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a filtering and lifting device for a pump in a limited space and a using method thereof, including a pump barrel and a water pump. A bracket is provided on the pump barrel, a winch is provided on the bracket, the opening of the water pump faces upward, a cylinder body is provided on the water pump and is communicated with the water pump, a detachable filter cylinder is provided on the cylinder body, a locking and adjusting device is provided on one side of the cylinder body, and a spring-back mechanism is provided on the locking and adjusting device.

[0006] In a preferred solution, the cylinder body includes an outer cylinder, water passing holes are provided on the outer cylinder, a plurality of rotating frames are provided at the top of the outer cylinder, a sliding hole is provided on one side of the rotating frame, and an annular groove is provided at the bottom of the outer cylinder; A sliding ring is provided at the bottom of the cylinder body, a plurality of flat bottom holes are provided on the sliding ring, and the sliding ring abuts against the annular groove.

[0007] In a preferred solution, the filter cylinder is of a hollow structure, a pressing ring is provided on the filter cylinder, a filter plate is provided at the top of the filter cylinder, grab rings are provided on both sides of the filter cylinder, and the filter cylinder abuts against the water passing holes.

[0008] In the preferred embodiment, a rotating hole is provided at one end of the clamping jaw, the clamping jaw is rotatably connected to the rotating frame through the rotating hole, a claw tip is provided at one end of the clamping jaw, the claw tip abuts against the pressure ring, a transverse groove is provided on the clamping jaw, and a transmission column is provided at the bottom of the clamping jaw; A U-shaped block is arranged on the top of the transmission column, a limiting column is arranged on the U-shaped block, the limiting column slides against the transverse groove, and the transmission column is installed on the flat bottom hole.

[0009] In the preferred embodiment, the locking and adjusting device includes a lifting column, a transmission ratchet mechanism, a weight block and a shell. The lifting column is connected to the slip ring. A vertical rack is provided on the lifting column. A rack is provided on one side of the weight block. A pull ring is provided on the top of the weight block.

[0010] In the preferred embodiment, the transmission ratchet mechanism includes a first rotating shaft and a second rotating shaft, the first rotating shaft is provided with a first gear, a second gear and a ratchet, the second rotating shaft is provided with a third gear and a fourth gear, the first gear is meshed with the lifting column, the second gear is meshed with the third gear, and the fourth gear is meshed with the rack.

[0011] In the preferred embodiment, a through hole and a rectangular groove are provided on the shell, the first rotating shaft and the second rotating shaft are rotatably connected to the shell, the weight block abuts on the rectangular groove, the lifting column abuts on the through hole and slides, and the shell is connected to the water pump.

[0012] In the preferred embodiment, the rebound mechanism includes a circular frame, a sliding slider is provided on the circular frame, a circular groove is provided on the slider, an inwardly concave groove is provided in the middle of one end of the circular groove, a plurality of springs are provided between the slider and the circular frame, a clamping rod is provided at one end of the slider, a pull rod is provided at the other end of the slider, a ring body is provided on the pull rod, and the clamping rod is against the ratchet.

[0013] In the preferred embodiment, the water pump is installed in a pump barrel, a sliding bracket is provided on the pump barrel, a winch is provided on the bracket, a transverse motor is provided on the top of the winch, a plurality of rollers are provided on the output shaft of the transverse motor, and the rollers are against the bracket.

[0014] A method for using a filter lifting device for a limited space pump, characterized by: S1, preliminary preparation for disassembling the bracket: driving the bracket and the winch of the winch so that the bracket is located directly above the water pump, lowering the hook of the winch so that the hook is hooked; S2, the locking and adjusting device moves to raise the lifting column: the winch is driven to raise the weight block to lift the lifting column, so that the plurality of clamping claws rotate; S3, the winch hooks the filter cartridge: the winch is driven to make the hook of the winch detach from the weight block, the transmission ratchet mechanism is stuck by the rebound mechanism, and the winch is driven again to make the hook of the winch hook the filter cartridge; S4. Lifting the filter cartridge: Drive the winch to lift the filter cartridge, manually clean the filter cartridge and then lower it so that the filter cartridge can be installed on the cartridge body; S5. The winch hooks the rebound mechanism: Drive the winch. After the winch hooks the ring body of the rebound mechanism, it pulls upward to make the clamping rod leave the transmission ratchet mechanism. The heavy object block moves downward under the action of gravity, and the clamping jaws clamp the filter cartridge.

[0015] The beneficial effects of the present invention are as follows: When the filter cartridge at the top of the water pump is blocked, drive the winch so that the hook of the winch hooks the heavy object block to lift the heavy object block. The fourth gear rotates, causing the third gear to rotate, causing the second gear to rotate, causing the first gear to rotate, causing the lifting column to lift, causing the slip ring to lift, causing multiple slip rings to lift, causing multiple clamping jaws to rotate, and causing the filter cartridge to separate from the water pump. The blocked filter cartridge is lifted by the winch. After manual cleaning on the shore, the filter cartridge is then lowered by the winch and placed back in place.

[0016] During the whole process, there is no need to use a large truck crane for hoisting. Only a winch is needed to lift the filter cartridge with a small structure, avoiding the phenomenon that due to the heavy weight of the pump itself, the hoisting of the entire pump is time-consuming, laborious, with large equipment losses and high cost investment. At the same time, during the hoisting process of the truck crane, if the operation is improper or the equipment fails, there may be a risk that the pump body will fall, injuring on-site personnel or damaging surrounding equipment.

[0017] During the whole process, there is no need for staff to dive underwater to disassemble the connecting pipes of the pump, eliminating the risk of diving operations, improving work efficiency, and greatly saving manpower and material resources. At the same time, the water pump at the top of the water pump can be cleaned regularly, extending the service life of the water pump.

[0018] After the filter cartridge is placed back in place, drive the winch to hook the ring body of the rebound mechanism, so that the clamping rod rebounds, so that the clamping rod moves away from the ratchet of the transmission ratchet mechanism, so that the heavy object block moves downward under the action of gravity, so that all the gears of the transmission ratchet mechanism rotate in the reverse direction, so that the lifting column descends, so that the slip ring descends, so that the transmission column descends, so that the clamping jaws rotate, and so that the tips of multiple clamping jaws clamp the filter cartridge of the filter cartridge. The overall structure is simple and convenient to operate, and uses the gravity of the heavy object block for displacement locking. The connection between the filter cartridge and the water pump is efficient, simple, highly practical, and has great popularization value. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the drawings and embodiments; Figure 1 It is a side view of the overall structure of the present invention; Figure 2 It is a side view of a partial structure of the present invention; Figure 3 It is an axonometric view of a partial structure of the present invention; Figure 4 It is an axonometric view of the cylinder body of the present invention; Figure 5 It is the present inventionFigure 3 Enlarged view of B therein; Figure 6 Is an exploded view of the partial structure of the present invention; Figure 7 Is a cross-sectional view of the cylinder body of the present invention; Figure 8 Is a side view of the locking adjustment device and the spring-back mechanism of the present invention; Figure 9 Is an axonometric view of the locking adjustment device of the present invention; Figure 10 Is an axonometric view of the heavy object block of the present invention; Figure 11 Is an axonometric view of the housing of the present invention; Figure 12 Is a side view of the spring-back mechanism of the present invention; Figure 13 Is the present invention Figure 1 Enlarged view of A therein; In the figure: water pump 1; cylinder body 2; outer cylinder 201; water through hole 202; rotating frame 203; sliding hole 204; annular groove 205; filter cylinder 3; pressing ring 301; filter plate 302; grasping ring 303; clamping jaw 4; rotating hole 401; transverse groove 402; claw tip 403; transmission column 5; U-shaped block 501; limiting column 502; locking adjustment device 6; lifting column 7; transmission ratchet mechanism 8; first rotating shaft 801; second rotating shaft 802; first gear 803; second gear 804; third gear 805; fourth gear 806; ratchet 807; heavy object block 9; rack 901; pull ring 902; housing 10; through hole 1001; rectangular groove 1002; spring-back mechanism 11; return-shaped frame 1101; slider 1102; return-shaped groove 1103; pull rod 1104; clamping rod 1105; rotating rod 1106; spring 1107; ring body 1108; support 12; winch 13; transverse movement motor 1301; roller 1302; pump barrel 14; slip ring 15; flat bottom hole 1501. Detailed implementation mode

[0020] Example 1: As Figures 1-13 In, a filtering and lifting device for a pump in a limited space and its using method, including a pump barrel 14 and a water pump 1. A support 12 is provided on the pump barrel 14, a winch 13 is provided on the support 12, the water pump 1 has an opening upward, a communicating cylinder body 2 is provided on the water pump 1, a detachable filter cylinder 3 is provided on the cylinder body 2, a locking adjustment device 6 is provided on one side of the cylinder body 2, and a spring-back mechanism 11 is provided on the locking adjustment device 6. With this structure, the water inlet of the water pump 1 is upward, and the water outlet of the water pump 1 is located on one side of the water pump 1. The water outlet of the water pump 1 is communicated with the pipeline in the pump barrel 14.

[0021] When the filter cartridge 3 at the top of the water pump 1 is blocked, the winch 13 is driven so that the hook of the winch 13 hooks the heavy weight block 9, causing the heavy weight block 9 to be lifted, causing the fourth gear 806 to rotate, causing the third gear 805 to rotate, causing the second gear 804 to rotate, causing the first gear 803 to rotate, causing the lifting column 7 to be lifted, causing the slip ring 15 to be lifted, causing multiple slip rings 15 to be lifted, causing multiple jaws 4 to rotate, causing the filter cartridge 3 to disengage from the water pump 1. The blocked filter cartridge 3 is lifted by the winch 13. After manual cleaning on the shore is completed, the filter cartridge 3 is then lowered back into place by the winch 13.

[0022] During the whole process, there is no need to use a large truck crane for hoisting. Only the winch 13 is needed to lift the small-structured filter cartridge 3, avoiding the phenomenon that it takes a lot of time and effort to lift the entire pump due to the heavy weight of the pump itself, resulting in large equipment losses and high cost investment. At the same time, during the hoisting process of the truck crane, if the operation is improper or the equipment fails, there may be a risk of the pump body falling, injuring on-site personnel or damaging surrounding equipment.

[0023] During the whole process, there is no need for workers to dive underwater to disassemble the connecting pipes of the pump, eliminating the risk of diving operations, improving work efficiency, and greatly saving manpower and material resources. At the same time, the water pump 1 at the top of the water pump 1 can be cleaned regularly, extending the service life of the water pump 1.

[0024] After the filter cartridge 3 is placed back in place, the winch 13 is driven to hook the ring body 1108 of the spring-back mechanism 11, causing the latch 1105 to spring back, causing the latch 1105 to move away from the ratchet 807 of the transmission ratchet mechanism 8, causing the heavy weight block 9 to move downward under the action of gravity, causing all the gears of the transmission ratchet mechanism 8 to rotate in the reverse direction, causing the lifting column 7 to descend, causing the slip ring 15 to descend, causing the transmission column 5 to descend, causing the jaws 4 to rotate, causing the tips of multiple jaws 4 to clamp the filter cartridge 3. The overall structure is simple and convenient to operate, and the displacement is locked by using the gravity of the heavy weight block 9. The connection between the filter cartridge 3 and the water pump 1 is efficient, simple, and highly practical.

[0025] In the preferred solution, the cylinder body 2 includes an outer cylinder 201. The outer cylinder 201 is provided with water through holes 202. Multiple rotating frames 203 are provided at the top of the outer cylinder 201. A sliding hole 204 is provided on one side of the rotating frame 203. A ring groove 205 is provided at the bottom of the outer cylinder 201; A slip ring 15 is provided at the bottom of the cylinder body 2. Multiple flat bottom holes 1501 are provided on the slip ring 15. The slip ring 15 abuts against the ring groove 205. With this structure, the transmission column 5 abuts and slides in the sliding hole 204. The limit post 502 of the transmission column 5 abuts and moves in the transverse groove 402 of the jaw 4. The transverse groove 402 abuts and slides in the ring groove 205. The rotating frame 203 is rotatably connected to the rotating frame 203. The outer cylinder 201 is communicated with the water inlet of the water pump 1 through the water through holes 202.

[0026] In a preferred embodiment, the filter cartridge 3 is a hollow structure. A pressing ring 301 is provided on the filter cartridge 3, a filter plate 302 is provided at the top of the filter cartridge 3, grab rings 303 are provided on both sides of the filter cartridge 3, and the filter cartridge 3 abuts against the water through hole 202. With this structure, a U-shaped frame is provided at the top of the filter cartridge 3, and the hook of the winch 13 can be connected to the U-shaped frame at the top of the filter cartridge 3. If the filter cartridge 3 becomes blocked, it only needs to be lifted up for treatment.

[0027] In a preferred embodiment, one end of the clamping jaw 4 is provided with a rotating hole 401. The clamping jaw 4 is rotatably connected to the rotating frame 203 through the rotating hole 401. One end of the clamping jaw 4 is provided with a claw tip 403, the claw tip 403 abuts against the pressing ring 301, a transverse groove 402 is provided on the clamping jaw 4, and a transmission column 5 is provided at the bottom of the clamping jaw 4; The top of the transmission column 5 is provided with a U-shaped block 501. A limiting column 502 is provided on the U-shaped block 501, and the limiting column 502 abuts against the transverse groove 402 and slides. The transmission column 5 is installed in the flat bottom hole 1501. With this structure, the heavy weight block 9 is driven to move upward, so that all the gears of the transmission ratchet mechanism 8 rotate in the reverse direction, so that the lifting column 7 descends, so that the sliding ring 15 descends, so that the transmission column 5 descends, so that the clamping jaw 4 rotates, so that the tips of a plurality of clamping jaws 4 clamp the filter cartridge 3 of the filter cartridge 3. The overall structure is simple and convenient to operate, and the displacement is locked by using the gravity of the heavy weight block 9. The bottom of the sliding ring 15 is connected to the sliding ring 15.

[0028] In a preferred embodiment, the locking and adjusting device 6 includes a lifting column 7, a transmission ratchet mechanism 8, a heavy weight block 9 and a housing 10. The lifting column 7 is connected to the sliding ring 15. A vertical rack is provided on the lifting column 7. A rack 901 is provided on one side of the heavy weight block 9, and a pull ring 902 is provided at the top of the heavy weight block 9. With this structure, the hook of the winch 13 hooks the heavy weight block 9, so that the heavy weight block 9 is lifted, the fourth gear 806 rotates, so that the third gear 805 rotates, so that the second gear 804 rotates, so that the first gear 803 rotates, so that the lifting column 7 is lifted, so that the sliding ring 15 is lifted, so that a plurality of sliding rings 15 are lifted, so that a plurality of clamping jaws 4 rotate, so that the filter cartridge 3 is separated from the water pump 1, and the blocked filter cartridge 3 is lifted by the winch 13.

[0029] In a preferred embodiment, the transmission ratchet mechanism 8 includes a first rotating shaft 801 and a second rotating shaft 802. A first gear 803, a second gear 804 and a ratchet 807 are provided on the first rotating shaft 801. A third gear 805 and a fourth gear 806 are provided on the second rotating shaft 802. The first gear 803 meshes with the lifting column 7, the second gear 804 meshes with the third gear 805, and the fourth gear 806 meshes with the rack 901. With this structure, the first rotating shaft 801 and the second rotating shaft 802 are rotatably connected to the first rotating shaft 801 and the second rotating shaft 802.

[0030] When the heavy weight block 9 moves, the fourth gear 806 rotates, causing the second rotating shaft 802 and the second rotating shaft 802 to rotate, causing the first rotating shaft 801, the first rotating shaft 801, the first rotating shaft 801 and the ratchet wheel 807 to rotate, causing the lifting column 7 to lift, thereby driving the plurality of jaws 4 to rotate.

[0031] In a preferred embodiment, the housing 10 is provided with a through hole 1001 and a rectangular groove 1002. The first rotating shaft 801 and the second rotating shaft 802 are rotatably connected to the housing 10. The heavy weight block 9 abuts against the rectangular groove 1002, and the lifting column 7 abuts against the through hole 1001 and slides thereon. The housing 10 is connected to the water pump 1.

[0032] In a preferred embodiment, the elastic return mechanism 11 includes a U-shaped frame 1101. A sliding slider 1102 is provided on the U-shaped frame 1101. A U-shaped groove 1103 is provided on the slider 1102. A concave groove is provided in the middle of one end of the U-shaped groove 1103. A plurality of springs 1107 are provided between the slider 1102 and the U-shaped frame 1101. A latch rod 1105 is provided at one end of the slider 1102, and a pull rod 1104 is provided at the other end of the slider 1102. A ring body 1108 is provided on the pull rod 1104. The latch rod 1105 abuts against the ratchet wheel 807. With this structure, when the ring body 1108 is pulled, the slider 1102 slides relative to the U-shaped frame 1101, causing the springs 1107 to be compressed and the latch rod 1105 to move away from the ratchet wheel 807.

[0033] The rotating rod 1106 is rotatably connected to the U-shaped frame 1101. A cylinder is provided at one end of the rotating rod 1106, and the cylinder abuts against the U-shaped groove 1103 and slides thereon.

[0034] In a preferred embodiment, the water pump 1 is installed in the pump barrel 14. A sliding bracket 12 is provided on the pump barrel 14. A winch 13 is provided on the bracket 12. A transverse movement motor 1301 is provided at the top of the winch 13. A plurality of rollers 1302 are provided on the output shaft of the transverse movement motor 1301, and the rollers 1302 abut against the bracket 12. With this structure, a slide rail groove is provided on the bracket 12, the rollers 1302 abut against the slide rail groove, a winding motor is provided at the bottom of the winch 13, and a steel cable is provided on the output shaft of the winding motor. One end of the steel cable is connected to the hook of the winch 13. A second roller is provided at the bottom of the bracket 12, and second slide rail grooves are provided on both sides of the pump barrel 14. The second rollers abut against the second slide rail grooves. A camera is provided on the hook of the winch 13, and the camera is used to observe the underwater situation.

[0035] Embodiment 2: Further described in combination with Embodiment 1: A method for using a filtering and lifting device for a pump in a confined space, characterized in that: S1. Preparation before disassembling the bracket 12: Drive the winch 13 of the bracket 12 and the winch 13, so that the bracket 12 is located directly above the water pump 1, and lower the hook of the winch 13 so that the hook catches the hook; S2. The locking and adjusting device 6 moves to raise the lifting column 7: The winch 13 is driven to raise the heavy object block 9, so as to jack up the lifting column 7 and make multiple jaws 4 rotate; S3. The winch 13 hooks the filter cartridge 3: The winch 13 is driven to make the hook of the winch 13 disengage from the heavy object block 9. The transmission ratchet mechanism 8 is caught by the spring-back mechanism 11. The winch 13 is driven again to make the hook of the winch 13 hook the filter cartridge 3; S4. The filter cartridge 3 is lifted: The winch 13 is driven to lift the filter cartridge 3. After manual cleaning of the filter cartridge 3, it is lowered so that the filter cartridge 3 is installed on the cylinder body 2; S5. The winch 13 hooks the spring-back mechanism 11: The winch 13 is driven. The winch 13 hooks the ring body 1108 of the spring-back mechanism 11 and pulls it up, so that the clamping rod 1105 leaves the transmission ratchet mechanism 8. The heavy object block 9 moves downward under the action of gravity, and the jaws 4 clamp the filter cartridge 3.

[0036] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A filter lifting device for a limited space pump, characterized by: The invention comprises a pump barrel (14) and a water pump (1), wherein a bracket (12) is provided on the pump barrel (14), a winch (13) is provided on the bracket (12), the water pump (1) is opened upward, a connected cylinder (2) is provided on the water pump (1), a detachable filter cylinder (3) is provided on the cylinder (2), a locking adjustment device (6) is provided on one side of the cylinder (2), and a rebound mechanism (11) is provided on the locking adjustment device (6).

2. According to claim 1, a filter lifting device for a limited space pump is characterized in that: The cylinder body (2) comprises an outer cylinder (201), a water through hole (202) is provided on the outer cylinder (201), a plurality of rotating racks (203) are provided on the top of the outer cylinder (201), a sliding hole (204) is provided on one side of the rotating rack (203), and an annular groove (205) is provided on the bottom of the outer cylinder (201); A slip ring (15) is provided at the bottom of the cylinder (2), and a plurality of flat-bottom holes (1501) are provided on the slip ring (15). The slip ring (15) abuts against the annular groove (205).

3. According to claim 1, a filter lifting device for a limited space pump is characterized in that: The filter cartridge (3) is a hollow structure. A pressure ring (301) is provided on the filter cartridge (3). A filter plate (302) is provided on the top of the filter cartridge (3). Grasping rings (303) are provided on both sides of the filter cartridge (3). The filter cartridge (3) abuts against the water through hole (202).

4. The filter lifting device for a limited space pump according to claim 1, characterized in that: A rotating hole (401) is provided at one end of the clamping jaw (4), and the clamping jaw (4) is rotatably connected to the rotating frame (203) through the rotating hole (401). A claw tip (403) is provided at one end of the clamping jaw (4), and the claw tip (403) abuts against the pressure ring (301). A transverse groove (402) is provided on the clamping jaw (4), and a transmission column (5) is provided at the bottom of the clamping jaw (4); A U-shaped block (501) is provided on the top of the transmission column (5), a limiting column (502) is provided on the U-shaped block (501), the limiting column (502) slides against the transverse groove (402), and the transmission column (5) is installed on the flat bottom hole (1501).

5. The filter lifting device for a limited space pump according to claim 1, characterized in that: The locking and adjusting device (6) comprises a lifting column (7), a transmission ratchet mechanism (8), a weight block (9) and a housing (10); the lifting column (7) is connected to a slip ring (15); a vertical rack is provided on the lifting column (7); a rack (901) is provided on one side of the weight block (9); and a pull ring (902) is provided on the top of the weight block (9).

6. The filter lifting device for a limited space pump according to claim 5, characterized in that: The transmission ratchet mechanism (8) comprises a first rotating shaft (801) and a second rotating shaft (802); a first gear (803), a second gear (804) and a ratchet (807) are provided on the first rotating shaft (801); a third gear (805) and a fourth gear (806) are provided on the second rotating shaft (802); the first gear (803) is meshed with the lifting column (7); the second gear (804) is meshed with the third gear (805); and the fourth gear (806) is meshed with the rack (901).

7. The filter lifting device for a limited space pump according to claim 5, characterized in that: A through hole (1001) and a rectangular groove (1002) are provided on the housing (10); the first rotating shaft (801) and the second rotating shaft (802) are rotatably connected to the housing (10); the weight block (9) abuts against the rectangular groove (1002); the lifting column (7) abuts against the through hole (1001) and slides; and the housing (10) is connected to the water pump (1).

8. The filter lifting device for a limited space pump according to claim 1, characterized in that: The rebound mechanism (11) comprises a circular frame (1101), a sliding slider (1102) is provided on the circular frame (1101), a circular groove (1103) is provided on the slider (1102), a concave groove is provided in the middle of one end of the circular groove (1103), a plurality of springs (1107) are provided between the slider (1102) and the circular frame (1101), a clamping rod (1105) is provided at one end of the slider (1102), a pull rod (1104) is provided at the other end of the slider (1102), a ring body (1108) is provided on the pull rod (1104), and the clamping rod (1105) is against the ratchet (807).

9. The filter lifting device for a limited space pump according to claim 1, characterized in that: The water pump (1) is installed in a pump barrel (14); a sliding bracket (12) is provided on the pump barrel (14); a winch (13) is provided on the bracket (12); a traverse motor (1301) is provided on the top of the winch (13); a plurality of rollers (1302) are provided on the output shaft of the traverse motor (1301); and the rollers (1302) are abutted against the bracket (12).

10. The method for using the filter lifting device of a limited space pump according to any one of claims 1 to 9, characterized in that: S1. Preliminary preparation for disassembling the support (12): driving the support (12) and the winch (13) of the winch (13) so that the support (12) is located directly above the water pump (1), and lowering the hook of the winch (13) so that the hook is hooked; S2, the locking and adjusting device (6) moves to raise the lifting column (7); the winch (13) is driven to raise the weight block (9) to lift the lifting column (7) so as to rotate the plurality of clamping claws (4); S3, the winch (13) hooks the filter cartridge (3): the winch (13) is driven to cause the hook of the winch (13) to be separated from the weight block (9), the transmission ratchet mechanism (8) is caught by the rebound mechanism (11), and the winch (13) is driven again to cause the hook of the winch (13) to hook the filter cartridge (3); S4, lifting the filter cartridge (3): driving the winch (13) to lift the filter cartridge (3), manually cleaning the filter cartridge (3) and then lowering the filter cartridge (3) so that the filter cartridge (3) is installed on the cylinder body (2); S5. The winch (13) hooks the rebound mechanism (11): the winch (13) is driven, the winch (13) hooks the ring body (1108) of the rebound mechanism (11) and then pulls upward, so that the clamping rod (1105) leaves the transmission ratchet mechanism (8), the weight block (9) moves downward under gravity, and the clamping claw (4) clamps the filter cartridge (3).

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