Hydraulic drive sewage type self-cleaning pump front filter device

Abstract

The utility model provides a kind of self-cleaning pump front filter device of sewage suction type driven by water force, including float, filter cartridge, outlet pipe, sewage pipe, suction pipe, suction nozzle, water power drive mechanism and rack, float is fixed in the top end of rack by float beam, filter cartridge is vertically arranged in the center position of rack, outlet pipe is vertically arranged in the center axis position of filter cartridge, outlet pipe is fixed in the top of rack by outlet pipe clamp, inlet hole is arranged on the sidewall of outlet pipe bottom, water power drive mechanism is arranged in outlet pipe, and it is docked with the sewage drive shaft movably arranged in sewage pipe, suction pipe is arranged as L type, its horizontal section is communicated with the side end of sewage pipe, suction nozzle is evenly arranged on the vertical section of suction pipe, close to the outer surface of filter cartridge, sewage pipe is fixed in the bottom of rack by sewage pipe clamp.The utility model drives cleaning assembly to carry out sewage suction type self-cleaning to filter cartridge by water power drive device, cleaning efficiency is high, without additional cleaning water resource, reduce energy consumption, improve water pump efficiency and life.

Description

Technical Field

[0001] This invention relates to a filter, and more particularly to a hydraulically driven suction-type self-cleaning pump pre-filter device. Background Technology

[0002] At present, more and more regions are gradually adopting drip irrigation technology for crop cultivation. However, drip irrigation emitters have strict requirements for the water quality of irrigation water. They need to be equipped with various filtration devices of different precision to filter impurities in the water source and meet certain standards before they can be used. Otherwise, the emitters will become clogged, affecting the normal operation of the irrigation system.

[0003] Currently, the filtration equipment commonly used in irrigation systems mainly includes sand filters, mesh filters, and disc filters. These filtration devices are all post-pump filters. After being pressurized by a water pump, the source water flows through these post-pump filters, trapping impurities and dirt inside. The clean water flows out from the outlet and is used in the irrigation system. Waste disposal methods include manual cleaning and automatic backwashing. Manual cleaning requires stopping the water supply, removing the filter screen or filter element, cleaning it with clean water, and then reinstalling it. Automatic backwashing uses clean water from the system to backwash the filter screen, filter element, or filter layer, flushing off surface impurities which are then discharged from the system via a drain valve.

[0004] Existing post-pump filters have the following disadvantages: complex structure, requiring water pump pressurization for water delivery, high system operating pressure requirements, and high head loss; manual cleaning is labor-intensive and requires flow interruption, while frequent automatic backwashing leads to water waste, and water blockage can easily occur if cleaning is not timely; in some water with poor quality, the post-pump filter will quickly become clogged, requiring constant cleaning, which seriously affects the use of the irrigation system and impacts crop irrigation; water source enters the pump first, and dirt in the water causes severe wear on the pump impeller, affecting the pump's efficiency and lifespan. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a hydraulically driven suction-type self-cleaning pre-pump filter device. The device uses a hydraulic drive to drive the cleaning components to perform suction-type self-cleaning of the filter screen, resulting in high efficiency in removing impurities such as mud and sand. It eliminates the need for additional cleaning water resources, reduces energy consumption, and improves pump efficiency and lifespan.

[0006] The technical solution adopted by this invention to solve its technical problem is: A hydraulically driven, self-cleaning pump pre-filter device includes a float, a filter cartridge, a water outlet pipe, a sewage discharge pipe, a suction pipe, a suction nozzle, a hydraulic drive mechanism, and a frame. Two floats are symmetrically arranged and fixed to the top of the frame via float beams. The filter cartridge has sealing end caps at both ends and is vertically positioned at the center of the frame. The water outlet pipe is vertically positioned at the central axis of the filter cartridge, with their upper ends movably connected. The upper end of the water outlet pipe passes through the center of the sealing end cap at the upper end of the filter cartridge and is fixed to the top of the frame by a water outlet pipe clamp. The bottom of the water outlet pipe is sealed, and an inlet hole is provided on its bottom sidewall. The hydraulic drive mechanism is located inside the water outlet pipe, inside the filter cartridge. The hydraulic drive mechanism includes a central drive shaft and a first helical blade. An upper bearing seat and a lower bearing seat are fixed to the upper middle and bottom parts of the water outlet pipe, respectively. An upper bearing is provided on the upper bearing seat, and a lower bearing is provided on the lower bearing seat. The top end of the central drive shaft is connected to the upper bearing, and the bottom end is connected to the lower bearing. The first spiral blade is fixed to the upper part of the central drive shaft. The lower end of the central drive shaft passes through the sealing end cap of the lower end of the filter cartridge and the lower sealing end of the outlet pipe, and is connected to the sewage drive shaft movably installed in the sewage discharge pipe. A second spiral blade is provided on the sewage drive shaft. The suction pipe is L-shaped, with its horizontal section connected to the side end of the sewage discharge pipe and its vertical section sealed at the top. Three suction nozzles are provided, evenly spaced on the vertical section of the suction pipe. The suction nozzles are flat-mouthed duckbill structures with a long strip suction port at the front end, close to the outer surface of the filter cartridge. The sewage discharge pipe is fixed to the bottom of the frame by a sewage discharge pipe clamp and is coaxially arranged with the outlet pipe. The suction pipe is fixed on the frame.

[0007] The aforementioned hydraulically driven self-cleaning pump pre-filter device has a bearing assembly fixed on the sealing end cover at the upper end of the filter cartridge and a bearing assembly cover disposed on the upper end of the bearing assembly. The upper end of the water outlet pipe passes through the center of the bearing assembly cover, and a rotating sealing ring is disposed between the two. An annular track is disposed on the outer wall of the upper end of the water outlet pipe. The bearing assembly includes a plurality of first bearings, which are evenly spaced along the circumferential direction on the sealing end cover at the upper end of the filter cartridge. The outer circular surface of each first bearing is in contact with and tangent to the arc surface of the annular track. The bearing assembly cover is disposed on the upper end of the bearing assembly.

[0008] In the above-mentioned hydraulically driven self-cleaning pump pre-filter device, a fixed flange is fixed to the outer side of the sealing end cover at the lower end of the filter cartridge. A coupling is connected to the lower end of the fixed flange. The end of the central drive shaft extends into the coupling and is connected to the top end of the sewage drive shaft. Both the central drive shaft and the sewage drive shaft are fixed to the coupling by pins.

[0009] In the above-mentioned hydraulically driven suction self-cleaning pump pre-filter device, a second bearing is provided inside the top end of the sewage pipe, and the sewage drive shaft is connected to the second bearing.

[0010] The above-mentioned hydraulically driven suction self-cleaning pump pre-filter device has several water passage holes spaced apart on the upper bearing seat, and the bottom plate of the lower bearing seat is solid. The upper bearing seat and the lower bearing seat are respectively connected to the inner wall of the outlet pipe by bolts.

[0011] In the above-mentioned hydraulically driven suction self-cleaning pump pre-filter device, the first spiral blade is a right-handed blade with a right-high and left-low orientation, and the second spiral blade is a left-handed blade with a right-low and left-high orientation.

[0012] In the aforementioned hydraulically driven suction self-cleaning pump pre-filter device, the float is fixed to the float beam by a float clamp.

[0013] The aforementioned hydraulically driven suction self-cleaning pump pre-filter device has a socket interface at the top of the outlet pipe.

[0014] The aforementioned hydraulically driven suction self-cleaning pump pre-filter device has several rectangular water inlets, which are spaced apart on the lower side wall of the outlet pipe.

[0015] The beneficial effects of this invention are: 1. The invention has a reasonable overall structure and a high degree of automation, requiring no personnel operation and additional cleaning water resources, thus reducing energy consumption.

[0016] 2. The vertical filter cylinder structure proposed in this invention allows the entire filter cylinder to float below the water surface, making full use of the filter screen. The water quality here is better than that in other places. It adapts to water level changes and continuously filters the supernatant while isolating it from external environmental erosion.

[0017] 3. This invention utilizes the combined action of a central drive shaft, a sewage drive shaft, and a bearing assembly to achieve hydraulically driven rotation of the filter cartridge. The rotation of the blades on the sewage drive shaft generates negative pressure, which adsorbs and discharges impurities from the surface of the filter cartridge through the suction nozzle and suction pipe. This achieves self-cleaning during the filtration process. Additionally, the centrifugal force generated by the rotation of the filter cartridge during filtration effectively removes most impurities. This dual action enables the filter cartridge to self-clean. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the pre-pump filter of the present invention; Figure 2 This is a side view of the overall structure; Figure 3 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction; Figure 4 for Figure 3 Enlarged structural diagram of section B in the middle; Figure 5 for Figure 3 Enlarged structural diagram of section C; Figure 6 This is a schematic diagram of the upper and lower bearing housings.

[0019] In the diagram: 1. Float; 2. Filter cartridge; 3. Outlet pipe; 3-1. Inlet hole; 3-2. Socket interface; 4. Sewage pipe; 5. Suction pipe; 6. Suction nozzle; 7. Frame; 8. Float beam; 9. Outlet pipe clamp; 10. Central drive shaft; 11. First helical blade; 12. Upper bearing seat; 12-1. Water passage hole; 13. Lower bearing seat; 14. Upper bearing; 15. Lower bearing; 16. Sewage drive shaft; 17. Second helical blade; 18. Sewage pipe clamp; 19. Bearing assembly; 20. Bearing assembly cover; 21. Rotary sealing ring; 22. Circular track; 23. Fixed flange; 24. Coupling; 25. Second bearing; 26. Float clamp. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] See Figures 1 to 5The present invention relates to a hydraulically driven self-cleaning pump pre-filter device comprising a float 1, a filter cylinder 2, a water outlet pipe 3, a sewage discharge pipe 4, a sewage suction pipe 5, a sewage suction nozzle 6, a hydraulic drive mechanism, and a frame 7. Two floats 1 are symmetrically arranged on the left and right sides, respectively fixed to a float beam 8 by float clamps 26. The float beam is fixed to the top of the frame 7. The filter cylinder 2 has sealing end caps at both its upper and lower ends, and is vertically positioned at the center of the frame 7. Both sealing end caps have through holes at their centers. The water outlet pipe 3 is vertically... Located at the central axis of the filter cartridge 2, the upper end of the water outlet pipe 3 passes through the through hole at the center of the sealing end cap at the upper end of the filter cartridge 2, and is fixed to the top of the frame 7 by the water outlet pipe clamp 9. The filter cartridge can rotate around the water outlet pipe. The top end of the water outlet pipe 3 is open and the bottom end is sealed. Several water inlet holes 3-1 are evenly spaced on its bottom side wall. For example, two rectangular water inlet holes are provided. The number and size of the water inlet holes are determined according to the water pump's pumping capacity. A socket interface 3-2 is provided at the top end, which is connected to the water pump through a flexible hose.The hydraulic drive mechanism includes a central drive shaft 10 and a first helical blade 11. An upper bearing seat 12 and a lower bearing seat 13 are fixed to the upper middle and bottom parts of the water outlet pipe 3, respectively. The outer plates of both bearing seats are bolted to the inner wall of the water outlet pipe and fit tightly against it, preventing water from flowing between the inner wall of the water outlet pipe and the outer plates of the bearing seats. The lower bearing seat can serve as a sealing end at the bottom of the water outlet pipe. A circular groove-shaped bearing mounting seat is provided at the center of the upper bearing seat 12, and an upper bearing 14 is installed within the groove. A circular groove is also provided at the center of the lower bearing seat 13. A grooved bearing mounting seat has a lower bearing 15 installed in its groove. The top end of the central drive shaft 10 is connected to the upper bearing 14, and the lower end of the shaft passes sequentially through the lower bearing 15, the lower end of the outlet pipe, and the sealing end cap at the lower end of the filter cartridge 2. The first spiral blade 11 is fixed to the upper part of the central drive shaft. The filtered water flows into the outlet pipe through the inlet hole at the lower end of the outlet pipe, flows upward, impacts the first spiral blade to rotate, thereby driving the central drive shaft to rotate. The lower end of the central drive shaft 10 is fixed in the coupling 24 by a pin. The drain pipe 4 is connected to the drain pipe. Hoop 18 is fixed to the bottom of bracket 7 and coaxially arranged with the outlet pipe 3. A second bearing 25 is installed inside the sewage pipe. The top end of sewage drive shaft 16 passes through the second bearing 25 and is inserted into coupling 24, aligning with the lower end of the central front drive shaft. Sewage drive shaft 16 is also fixed to coupling by pins. The top end of coupling is integrally set with fixed flange 23. Fixed flange is fixed to the sealing end cover at the lower end of filter cartridge 2 by bolts. When the central drive shaft rotates, it drives the filter cartridge and sewage drive shaft to rotate simultaneously. A second helical blade 17 is provided on the sewage drive shaft 16. The rotating plate creates a relative negative pressure inside the drain pipe, allowing the dirt on the filter cartridge surface to be sucked back and discharged through the suction nozzles on the suction pipe. The suction pipe 5 is L-shaped, with its horizontal section connected to the side end of the drain pipe 4 and its vertical section sealed at the top. Three suction nozzles 6 are evenly spaced on the vertical section of the suction pipe 5. Each suction nozzle 6 is a vertically arranged flat duckbill structure with a long, narrow suction port at its front end. The total length of the suction ports at the front ends of the three suction nozzles is the same as the total height of the filter cartridge. The suction ports are close to the outer surface of the filter cartridge 2. The suction pipe 5 is fixed to the frame 7.

[0022] A bearing sleeve 19 and a bearing sleeve cover 20 are fixed to the sealing end cap at the upper end of the filter cartridge 2. The upper end of the water outlet pipe 3 passes through the center of the bearing sleeve cover 20. A rotating sealing ring 21 is provided between the two to prevent water from entering the filter cartridge through the through hole of the sealing end cap at the upper end of the water outlet pipe and the filter cartridge 2. An annular track 22 is provided on the outer wall of the upper end of the water outlet pipe 3. The bearing sleeve 19 includes a plurality of first bearings, which are evenly spaced along the circumference on the sealing end cap at the upper end of the filter cartridge 2. The outer circumferential surface of each first bearing is in contact with and tangent to the arc surface of the annular track 22. The rotation of the central drive shaft drives the filter cartridge to rotate. The bearing sleeve and the annular track cooperate to ensure the smooth and stable rotation of the filter cartridge. The bearing sleeve cover 20 is located at the upper end of the bearing sleeve 19.

[0023] See Figure 6 The upper bearing housing 12 is provided with several water passage holes 12-1 at intervals, such as... Figure 6 As shown, three fan-shaped water passages are provided. The filtered water flows upward through the water passages and is then pumped out by a water pump. The bottom plate of the lower bearing seat 13 is solid.

[0024] The float can be a semi-cylindrical component made of plastic, foam or other materials that can float on the water surface. It is fixed to the float beam 8 by the float clamp 26. The float is located at the top of the entire filter, so that the entire filter device floats in the water.

[0025] The filter cartridge can be configured as a filter chamber consisting of a cylindrical frame and sealed end caps at both ends, with a filter screen laid on the outside of the frame. Alternatively, it can be configured as an integral cylindrical structure with sealed end caps at both ends, with several filter holes on the cylinder body.

[0026] Filtration Process: The filter of this invention is floated in water, with the float ensuring the filter cartridge remains below the water surface. This ensures the water intake is always below the surface, resulting in less impurities compared to the water in the middle, at the bottom, and on the surface. Water then passes through the filter screen into the filter cartridge, where impurities are trapped, thus filtering the water. The outlet pipe's socket is connected to the water pump's suction pipe via a flexible hose. When the water pump operates, it draws the filtered clean water out of the filter cartridge. Raw water continuously enters the filter cartridge through the filter screen via self-pressure osmosis, thus continuously filtering. Clean water enters the outlet pipe through the inlet at the lower end. Driven by suction, the water flows upwards within the outlet pipe, passing through the first helix of the right-hand screw on the central drive shaft. When the blades rotate, the hydraulically driven central drive shaft (viewed from top to bottom) rotates clockwise. The lower end of the central drive shaft is coaxially connected to the coupling at the lower end of the fixed flange. At the same time, the fixed flange is also coaxially connected to the filter cartridge and the sewage drive shaft. As the central drive shaft rotates, it drives the filter cartridge and the sewage drive shaft to rotate together. The left-hand spiral second blade of the sewage drive shaft has the opposite spiral direction to the first spiral blade of the central drive shaft. The second spiral blade of the sewage drive shaft drives the water inside the sewage pipe to flow downward and be discharged from the lower port of the sewage pipe, forming a negative pressure suction force in the sewage pipe. At the same time, the suction pipe is connected to the sewage pipe, and the suction nozzle is connected to the sewage pipe. A negative pressure suction force is also formed at the mouth of the suction nozzle. The suction nozzle will suck in the impurities attached to the filter screen and discharge them after passing through the suction pipe and the sewage pipe, thus achieving the purpose of hydraulic self-cleaning.

[0027] The central drive shaft drives the filter cartridge and the wastewater drive shaft to rotate. The rotation of the filter cartridge generates centrifugal force, and some impurities attached to the outer surface of the filter screen will fall off due to the rotation of the filter screen and the cleaning of the water flow. Some impurities will still be adsorbed on the outer surface of the filter screen. When the filter cartridge is clogged, this part of the filter screen rotates to the suction nozzle position. The negative pressure suction force at the suction nozzle will suck away the impurities adsorbed on the outer surface of the filter screen, and the filtration performance of the filter screen is efficiently restored. The filtration and cleaning cycle continues to ensure a continuous supply of clean water for use.

Claims

1. A hydraulically driven, suction-type self-cleaning pump pre-filter, characterized in that: The filtration device includes a float (1), a filter cylinder (2), an outlet pipe (3), a sewage pipe (4), a suction pipe (5), a suction nozzle (6), a hydraulic drive mechanism, and a frame (7). Two floats (1) are symmetrically arranged on the left and right sides, respectively fixed to the top of the frame (7) via float beams (8). Sealed end caps are provided at both the upper and lower ends of the filter cylinder (2), which is vertically positioned at the center of the frame (7). The outlet pipe (3) is vertically positioned at the central axis of the filter cylinder (2), with their upper ends movably connected. The upper end of the outlet pipe (3) passes through the filter cylinder (2). The filter cartridge (2) is sealed at the center of the upper end cap and fixed to the top of the frame (7) by the outlet pipe clamp (9). The bottom of the outlet pipe (3) is sealed and has an inlet hole (3-1) on its bottom side wall. The hydraulic drive mechanism is located inside the outlet pipe (3) inside the filter cartridge (2). The hydraulic drive mechanism includes a central drive shaft (10) and a first spiral blade (11). The upper bearing seat (12) and the lower bearing seat (13) are fixed in the upper middle and lower parts and bottom of the outlet pipe (3), respectively. The upper bearing seat (12) has a... An upper bearing (14) is provided, and a lower bearing (15) is provided on the lower bearing seat (13). The top end of the central drive shaft (10) is connected to the upper bearing (14), and the lower end is connected to the lower bearing (15). The first spiral blade (11) is fixed to the upper part of the central drive shaft. The lower end of the central drive shaft (10) passes through the sealing end cap of the lower end of the filter cartridge (2) and the lower sealing end of the outlet pipe, and is connected to the sewage drive shaft (16) movably installed in the sewage pipe (4). A second spiral blade (11) is provided on the sewage drive shaft (16). 17) The suction pipe (5) is L-shaped, with its horizontal section connected to the side end of the drain pipe (4) and the top of the vertical section sealed. There are three suction nozzles (6) evenly spaced on the vertical section of the suction pipe (5). The suction nozzle (6) is a flat duckbill structure with a long strip suction port at the front end, close to the outer surface of the filter cartridge (2). The drain pipe (4) is fixed to the bottom of the frame (7) by the drain pipe clamp (18) and is coaxial with the water outlet pipe (3). The suction pipe (5) is fixed on the frame (7). The filter cartridge (2) has a bearing assembly (19) and a bearing assembly cover (20) fixed on the sealing end cap at the upper end. The upper end of the water outlet pipe (3) passes through the center of the bearing assembly cover (20), and a rotating sealing ring (21) is provided between them. An annular track (22) is provided on the outer wall of the upper end of the water outlet pipe (3). The bearing assembly (19) includes several first bearings, which are evenly spaced along the circumferential direction on the sealing end cap at the upper end of the filter cartridge (2). The outer circular surface of each first bearing is in contact with and tangent to the arc surface of the annular track (22). The bearing assembly cover (20) is provided on the upper end of the bearing assembly (19). A fixed flange (23) is fixed to the outer side of the sealing end cover at the lower end of the filter cartridge (2). A coupling (24) is connected to the lower end of the fixed flange (23). The end of the central drive shaft (10) extends into the coupling (24) and is connected to the top end of the sewage drive shaft (16). Both the central drive shaft (10) and the sewage drive shaft (16) are fixed to the coupling (24) by pins. The first helical blade (11) is a right-handed blade with a right-high and left-low orientation, and the second helical blade (17) is a left-handed blade with a right-low and left-high orientation.

2. The pre-filter device for a hydraulically driven suction-type self-cleaning pump according to claim 1, characterized in that: The top of the sewage pipe (4) is provided with a second bearing (25), and the sewage drive shaft (16) is connected to the second bearing (25).

3. The hydraulically driven suction-type self-cleaning pump pre-filter device according to claim 2, characterized in that: The upper bearing seat (12) is provided with a number of water passage holes (12-1) at intervals. The bottom plate of the lower bearing seat (13) is solid and can be used to seal the bottom of the water outlet pipe. The upper bearing seat (12) and the lower bearing seat (13) are respectively connected to the inner wall of the water outlet pipe (3) by bolts.

4. The hydraulically driven suction-type self-cleaning pump pre-filter device according to claim 3, characterized in that: The pontoon (1) is fixed to the pontoon beam (8) by the pontoon clamp (26).

5. The hydraulically driven suction-type self-cleaning pump pre-filter device according to claim 4, characterized in that: The top of the water outlet pipe (3) is provided with a socket interface (3-2).

6. The pre-filter device for a hydraulically driven suction-type self-cleaning pump according to claim 5, characterized in that: The water inlet (3-1) is provided in several rectangular shapes and is spaced apart on the lower side wall of the water outlet pipe (3).

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