Ultrafiltration membrane purification device for purifying water in waterworks

Abstract

The invention provides an ultrafiltration membrane purification device for water purification of waterworks, and relates to the technical field of ultrafiltration membrane purification equipment.The ultrafiltration membrane purification device comprises a water pump and a tank body, a supporting assembly is installed on one side of the tank body and comprises a clamping cover and a supporting plate, an ultrafiltration assembly is installed on the clamping cover and comprises an ultrafiltration membrane and a spacer bush, and the supporting plate is installed on the supporting plate. The ultrafiltration membrane purification device comprises a movable sleeve, a clamping cover is installed on the movable sleeve, a bearing assembly is installed on the clamping cover, the bearing assembly comprises a connecting sleeve and a supporting sleeve, a driving assembly is installed on the supporting sleeve, and the driving assembly comprises a first motor and a connecting rod. When the loop moves rightwards, water is quickly sucked between the clamping ring II and the spacer ring after being filtered by the ultrafiltration membrane, and when the loop moves rightwards, the water can be sucked between the clamping ring I and the spacer ring after being filtered by the ultrafiltration membrane, so that the ultrafiltration working efficiency of the water is improved, and the ultrafiltration membrane can be automatically backwashed and cleaned; the device is suitable for ultrafiltration membrane purification processing of tap water.

Description

Technical Field

[0001] This invention relates to the field of ultrafiltration membrane purification equipment technology, specifically to an ultrafiltration membrane purification device for water purification in a waterworks. Background Technology

[0002] When water treatment plants purify water, ultrafiltration membrane purification equipment is often used to improve the filtration effect. Patent application CN202410675829.5 discloses a filtration system and process based on ultrafiltration membrane purification. Through the arrangement of a first filtration mechanism, a second filtration mechanism, a cleaning mechanism, a scraping mechanism, and a drainage mechanism, the material is discharged into the first filtration mechanism for two filtrations. The filtered material is then discharged through a hose into the interior of a hollow disc, and through the feed port, the material enters the ultrafiltration membrane purification cylinder for further filtration based on ultrafiltration membrane technology. The filtration process involves the ultrafiltration membrane purification cartridge and a drainage mechanism working together. The filtered material enters the interior of the filter cartridge through the ultrafiltration membrane purification cartridge, and then flows into the connecting pipe via a connector. Finally, the drain pipe discharges the filtered material, completing the filtration process. This multiple filtration stages ensure thorough filtration of the material. Patent application CN202410889230.1 discloses an integrated ultrafiltration water purification device equipped with a water hammer conversion mechanism and a bubble cleaning mechanism, which not only prevents water hammer phenomena... This process generates water hammer, which is converted into a bubble cleaning force on the ultrafiltration membrane cloth. The impact and bursting of these bubbles dislodges impurities adhering to the membrane cloth, improving cleaning efficiency. During chemical cleaning, the adjustment mechanism connects the gas storage box and the gas storage chamber, allowing gas from the storage box to enter the chamber and drive the drive component. This causes the fiber straightening ring to move up and down, straightening the ultrafiltration membrane fibers and removing impurities and chemicals, further enhancing cleaning efficiency. According to its publicly available technical solutions, existing ultrafiltration membrane purification equipment has several drawbacks. First, when filtering minute impurities, the ultrafiltration membrane's own filtration resistance is too high, leading to insufficient water filtration speed and hindering the efficiency of ultrafiltration. Second, during the filtration process, impurities can clog the ultrafiltration membrane, causing its filtration speed to gradually decrease, which is detrimental to ensuring water filtration efficiency. Third, when cleaning the ultrafiltration membrane in real time, impurities can easily clog the inside of the membrane's pores, thus compromising the cleaning effect. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide an ultrafiltration membrane purification device for water purification in water treatment plants, thereby solving the problems mentioned in the background art. The present invention has a novel structure, multiple functions, and is suitable for use in ultrafiltration membrane purification of tap water.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an ultrafiltration membrane purification device for water purification in a waterworks, comprising a water pump and a tank. A support assembly is installed on one side of the tank, the support assembly comprising a retaining cover and a support plate. An ultrafiltration assembly is installed on the retaining cover, the ultrafiltration assembly comprising an ultrafiltration membrane and a septum. A load-bearing assembly is installed on the retaining cover, the load-bearing assembly comprising a connecting sleeve and a support sleeve. A drive assembly is installed on the support sleeve, the drive assembly comprising a motor and a connecting rod. An isolation assembly is installed inside the ultrafiltration membrane, the isolation assembly comprising a spacer ring and a loose sleeve. A connecting assembly is installed on the loose sleeve, the connecting assembly comprising a movable rod and a support rod. A pull-out assembly is installed on the loose sleeve, the pull-out assembly comprising a retaining ring and a retaining ring. An outflow assembly is installed on the retaining cover, the outflow assembly comprising a side sleeve and an outlet.

[0005] Furthermore, the tank is installed on one side of the water pump, and the water pump is connected to the bottom of the other side of the tank through a water pipe. The support plate is welded to the bottom of the cover. The bottom of one side of the tank is connected to the bottom of one end of the cover through a connecting pipe. The connecting sleeve is installed on the other end of the cover by bolts, and the support sleeve is installed on one side of the connecting sleeve by bolts.

[0006] Furthermore, the spacer is welded to the inner side of the sleeve, one end of the ultrafiltration membrane is sealed and mounted on the inner wall of one end of the cover by bolts, and the other end of the ultrafiltration membrane is sealed and mounted on the spacer by a sealing ring. The inner and outer diameters of the spacer are equal to the inner and outer diameters of the ultrafiltration membrane.

[0007] Furthermore, a second motor is bolted to the top of one end of the cover, a screw plate is fitted on the outer side of the ultrafiltration membrane, a toothed ring is welded to one end of the screw plate, a gear is clamped at the top of the toothed ring, and one side of the gear passes through the inner wall of the cover through a sealing ring and is keyed to the output shaft of the second motor.

[0008] Furthermore, the spiral of the screw plate is wound around the outer side of the ultrafiltration membrane and extends to the inner side of the connecting sleeve. The outer side of the screw plate is clamped on the inner wall of the connecting sleeve. The screw plate is sleeved on the outer side of the spacer. A feed valve is installed at the bottom of the connecting sleeve by bolts. The connecting sleeve is connected to the feed valve.

[0009] Furthermore, the outer side of the spacer ring is welded to the inner wall of the ultrafiltration membrane, the spacer rings are evenly distributed on the inner side of the ultrafiltration membrane, the loose sleeve is installed on the inner side of the ultrafiltration membrane, the spacer rings are sleeved on the outer side of the loose sleeve, the first retaining ring and the second retaining ring are both welded to the outer side of the loose sleeve, and the first retaining ring, the second retaining ring and the spacer rings are alternately distributed on the inner side of the ultrafiltration membrane.

[0010] Furthermore, the side sleeve is welded to one end of the cover, one end of the loop is clipped inside the side sleeve, the outlet is opened on the side wall of the side sleeve, the inside of the loop is connected to the outlet through the side sleeve, and the other end of the loop extends to the inside of the spacer sleeve.

[0011] Furthermore, the movable rod is installed inside the sleeve, and the movable rod is fixedly connected to the inner wall of the sleeve by a support rod. One end of the movable rod passes through the spacer through a sealing ring and extends to the inner side of the support sleeve. The motor is installed on the top of the support sleeve by bolts. An eccentric wheel is installed inside the support sleeve. The top of the eccentric wheel is keyed to the output shaft of the motor. One end of the connecting rod is installed on the eccentric wheel by a bearing, and the other end of the connecting rod is installed on one end of the movable rod by a bearing.

[0012] Furthermore, a one-way valve is installed on the first retaining ring, and a one-way valve is installed on the second retaining ring. The one-way valve and the one-way valve are evenly distributed on the first retaining ring and the second retaining ring, respectively.

[0013] Furthermore, a conical hopper is welded to the inner wall of the looper, and a one-way valve three is installed on the inner side of the conical hopper. The outer side of the looper is unidirectionally connected to the inner side of the looper through the conical hopper and the one-way valve three. The width of the conical hopper is smaller than the distance between the first retaining ring and the second retaining ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In use, the ultrafiltration membrane purification device of this water treatment plant pumps the pre-filtered water into the tank. As the water volume in the tank increases, the air at the top of the tank is compressed, increasing the water supply pressure. The water is then stably transported to the inside of the casing through connecting pipes. Inside the casing, the water undergoes ultrafiltration through the ultrafiltration membrane, then sequentially passes through the conical hopper and one-way valve three into the inside of the looper, and finally flows out through the side sleeve and outlet. Motor one drives the eccentric wheel to rotate, which in turn drives the movable rod via a connecting rod. The movable rod, through a support rod, causes the looper to move back and forth inside the ultrafiltration membrane. As the looper moves to the left, the distance between the retaining ring 1 and the retaining cover and spacer ring continuously decreases. The pure water located to the left of the retaining ring 1 enters the inner side of the looper through the cone and one-way valve 3. The distance between the retaining ring 2 and the spacer ring continuously increases, and the pure water cannot enter the space between the retaining ring 2 and the spacer ring through the one-way valve 2 and the one-way valve 3. Thus, water can be quickly drawn into the space between the retaining ring 2 and the spacer ring after being filtered by the ultrafiltration membrane. Conversely, when the looper moves to the right, water can be drawn into the space between the retaining ring 1 and the spacer ring after being filtered by the ultrafiltration membrane, increasing the pressure difference inside and outside the ultrafiltration membrane, thereby improving the working efficiency of ultrafiltration of water.

[0015] 2. In use, the ultrafiltration membrane purification device of this water treatment plant operates by having motor 2 drive the gear ring to rotate on the outer side of the ultrafiltration membrane through the meshing of gears and gear rings. This rotation drives the screw plate to rotate on the outer side of the ultrafiltration membrane. The screw plate pushes the impurities filtered out on the outer side of the ultrafiltration membrane, as well as the tiny impurities cleaned by backwashing, to the right until the screw plate pushes the impurities between the connecting sleeve and the spacer. Then, the screw plate pushes the impurities and some water to the right side between the connecting sleeve and the spacer, and finally discharges the impurities and a small amount of water through the discharge valve. This allows for real-time cleaning of the ultrafiltration membrane during the filtration process, preventing the filtration speed from gradually decreasing due to filtration and improving the purification efficiency of the tap water.

[0016] 3. When the ultrafiltration membrane purification device of this water treatment plant is in use, when the looper moves to the left and the retaining ring 1 approaches the spacer ring, the conical hopper is completely moved to the outer side between the retaining ring 1 and the spacer ring. The pure water between the retaining ring 1 and the spacer ring cannot enter the inner side of the looper through the conical hopper and the one-way valve 3. Part of the water flows directly through the inner side of the ultrafiltration membrane outwards, while the other part passes through the one-way valve 1 on the retaining ring 1 into the space between the retaining ring 1 and the retaining ring 2, and then flows outwards through the ultrafiltration membrane. When the looper moves to the right and the retaining ring 2 approaches the spacer ring, the conical hopper is completely moved to the outer side between the retaining ring 2 and the spacer ring. The purified water between the second and third spacers cannot enter the inner side of the looper through the conical hopper and the third one-way valve. Some water flows directly outward through the inner side of the ultrafiltration membrane, while the other part flows outward through the second one-way valve on the second retainer into the space between the first and second retainers, and then flows outward through the ultrafiltration membrane. The sum of the lengths of the two outward-flowing sections of the ultrafiltration membrane is greater than the distance between the two adjacent spacers, thus enabling automatic backwashing and cleaning of the ultrafiltration membrane. This removes tiny impurities that clog the filter pores of the ultrafiltration membrane, effectively improving the cleaning effect of the real-time cleaning of the ultrafiltration membrane and ensuring its filtration efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 1 ; Figure 2 This is a cross-sectional view of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 3 This is a schematic diagram of the structure of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the structure of the ultrafiltration membrane in an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 6 This is a schematic diagram of the structure of a flexible sleeve of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 7 This is a schematic diagram of the structure of the cover of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. Figure 8 This is a schematic diagram of the screw plate structure of an ultrafiltration membrane purification device for water purification in a waterworks according to the present invention. In the diagram: 1. Water pump; 2. Tank; 3. Clamping cover; 4. Support plate; 5. Connecting pipe; 6. Connecting sleeve; 7. Support sleeve; 8. Feed valve; 9. Ultrafiltration membrane; 10. Spacing sleeve; 11. Side sleeve; 12. Outlet; 13. Spacer ring; 14. Loose sleeve; 15. Live rod; 16. Support rod; 17. Motor 1; 18. Eccentric wheel; 19. Connecting rod; 20. Clamping ring 1; 21. Clamping ring 2; 22. Check valve 1; 23. Check valve 2; 24. Conical hopper; 25. Check valve 3; 26. Screw plate; 27. Gear ring; 28. Motor 2; 29. ​​Gear. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1 to 8This invention provides a technical solution: an ultrafiltration membrane purification device for water purification in a waterworks, comprising a water pump 1 and a tank 2. A support assembly is installed on one side of the tank 2, the support assembly including a retaining cover 3 and a support plate 4. An ultrafiltration assembly is installed on the retaining cover 3, the ultrafiltration assembly including an ultrafiltration membrane 9 and a spacer 10. A load-bearing assembly is installed on the retaining cover 3, the load-bearing assembly including a connecting sleeve 6 and a support sleeve 7. A drive assembly is installed on the support sleeve 7, the drive assembly including a motor 17 and a connecting rod 19. An isolation assembly is installed inside the ultrafiltration membrane 9, the isolation assembly including a spacer ring 13 and a loose sleeve 14. A connecting rod is installed on the loose sleeve 14. The connecting assembly includes a movable rod 15 and a support rod 16. A pull-out assembly is installed on the movable sleeve 14, which includes a retaining ring 20 and a retaining ring 21. An outflow assembly is installed on the retaining cover 3, which includes a side sleeve 11 and an outlet 12. The spacer 10 is welded to the inner side of the connecting sleeve 6. One end of the ultrafiltration membrane 9 is sealed to the inner wall of one end of the retaining cover 3 by bolts, and the other end of the ultrafiltration membrane 9 is sealed to the spacer 10 by a sealing ring. The inner and outer diameters of the spacer 10 are equal to the inner and outer diameters of the ultrafiltration membrane 9. A motor 28 is bolted to the top of one end of the retaining cover 3. A screw plate 26 is fitted around the outer side of the membrane 9. A toothed ring 27 is welded to one end of the screw plate 26. A gear 29 is engaged at the top of the toothed ring 27. One side of the gear 29 passes through the inner wall of the retainer 3 via a sealing ring and is keyed to the output shaft of the second motor 28. The screw plate 26 is spirally wound around the outer side of the ultrafiltration membrane 9 and extends to the inner side of the connecting sleeve 6. The outer side of the screw plate 26 is engaged with the inner wall of the connecting sleeve 6. The screw plate sleeve 26 is located on the outer side of the spacer 10. A feed valve 8 is bolted to the bottom of the connecting sleeve 6. The connecting sleeve 6 is connected to the feed valve 8. In use, the second motor 28 drives the toothed ring 27 through the meshing of the gear 29. 27 rotates on the outer side of the ultrafiltration membrane 9, causing the screw plate 26 to rotate on the outer side of the ultrafiltration membrane 9. The screw plate 26 pushes the impurities filtered out on the outer side of the ultrafiltration membrane 9 and the tiny impurities cleaned by backflushing the ultrafiltration membrane 9 to the right until the screw plate 26 pushes the impurities between the connecting sleeve 6 and the spacer 10. Then, the screw plate 26 pushes the impurities and some water to the right side between the connecting sleeve 6 and the spacer 10. Finally, the impurities and a small amount of water are discharged outward through the discharge valve 8. This allows for real-time cleaning of the ultrafiltration membrane 9 during the filtration process, preventing the filtration speed of the ultrafiltration membrane 9 from gradually decreasing due to filtration work and improving the purification efficiency of tap water.

[0020] In this embodiment, the outer side of the spacer ring 13 is welded to the inner wall of the ultrafiltration membrane 9. The spacer rings 13 are evenly distributed on the inner side of the ultrafiltration membrane 9. The loose sleeve 14 is installed on the inner side of the ultrafiltration membrane 9, and the spacer rings 13 are sleeved on the outer side of the loose sleeve 14. The retaining rings 1-20 and 2-21 are both welded to the outer side of the loose sleeve 14. The retaining rings 1-20, 2-21, and spacer rings 13 are alternately distributed on the inner side of the ultrafiltration membrane 9. The side sleeve 11 is welded to one end of the retaining cover 3. One end of the loose sleeve 14 is clamped to the inner side of the side sleeve 11. The outlet 12 is opened on the side wall of the side sleeve 11. The inner side of the loose sleeve 14 is connected to the outlet 12 through the side sleeve 11. The other end of the loop 14 extends to the inner side of the spacer 10. A one-way valve 22 is installed on the retaining ring 10, and a one-way valve 23 is installed on the retaining ring 21. The one-way valves 22 and 23 are evenly distributed on the retaining rings 20 and 21, respectively. A conical hopper 24 is welded to the inner wall of the loop 14, and a one-way valve 25 is installed on the inner side of the conical hopper 24. The outer side of the loop 14 is unidirectionally connected to the inner side of the loop 14 through the conical hopper 24 and the one-way valve 25. The width of the conical hopper 24 is less than the distance between the retaining ring 10 and the retaining ring 21. In use, when the loop 14 moves to the left to the retaining ring 10... When the cone 24 approaches the spacer ring 13, it is completely moved to the outer side between the retaining ring 10 and the spacer ring 13. The pure water between the retaining ring 10 and the spacer ring 13 cannot pass through the cone 24 and the one-way valve 25 to enter the inner side of the looper 14. Part of the water flows directly outward through the inner side of the ultrafiltration membrane 9, while the other part passes through the one-way valve 22 on the retaining ring 10 and enters between the retaining ring 10 and the retaining ring 21, then flows outward through the ultrafiltration membrane 9. When the looper 14 moves to the right and the retaining ring 21 approaches the spacer ring 13, the cone 24 is completely moved to the outer side between the retaining ring 21 and the spacer ring 13. The purified water cannot enter the inner side of the looper 14 through the cone 24 and the one-way valve 25. Some water flows directly outward through the inner side of the ultrafiltration membrane 9, while other water enters the space between the retaining ring 20 and the retaining ring 21 through the one-way valve 23 on the retaining ring 21, and then flows outward through the ultrafiltration membrane 9. The sum of the lengths of the two outward-flowing sections of the ultrafiltration membrane 9 is greater than the distance between two adjacent spacers 13, thus enabling automatic backwashing of the ultrafiltration membrane 9 to remove the tiny impurities clogging the filter pores of the ultrafiltration membrane 9. This effectively improves the cleaning effect of the real-time cleaning of the ultrafiltration membrane 9 and ensures the filtration efficiency of the ultrafiltration membrane 9.

[0021] In this embodiment, the tank body 2 is installed on one side of the water pump 1, and the water pump 1 is connected to the bottom of the other side of the tank body 2 through a water pipe. The support plate 4 is welded to the bottom of the retaining cover 3. The bottom of one side of the tank body 2 is connected to the bottom of one end of the retaining cover 3 through a connecting pipe 5. The connecting sleeve 6 is installed on the other end of the retaining cover 3 by bolts. The support sleeve 7 is installed on one side of the connecting sleeve 6 by bolts. The movable rod 15 is installed inside the movable sleeve 14. The movable rod 15 is fixedly connected to the inner wall of the movable sleeve 14 through a support rod 16. One end of the movable rod 15 passes through a sealing ring. The sleeve 10 extends to the inner side of the support sleeve 7. The motor 17 is bolted to the top of the support sleeve 7. An eccentric wheel 18 is installed on the inner side of the support sleeve 7. The top of the eccentric wheel 18 is keyed to the output shaft of the motor 17. One end of the connecting rod 19 is mounted on the eccentric wheel 18 via a bearing, and the other end of the connecting rod 19 is mounted on one end of the movable rod 15 via a bearing. In use, the water pump 1 pumps the pre-filtered water into the tank 2. As the water in the tank 2 increases, the air at the top of the tank 2 is compressed, increasing the water supply pressure. The pressure is then stabilized through the connecting pipe 5. The water is conveyed to the inside of the housing 3. After being processed by the ultrafiltration membrane 9 inside the housing 3, the water then enters the inside of the looper 14 through the cone hopper 24 and the one-way valve 25, and then flows out through the side sleeve 11 and the outlet 12. The motor 17 drives the eccentric wheel 18 to rotate. The eccentric wheel 18 drives the movable rod 15 through the connecting rod 19. The movable rod 15 drives the looper 14 to move back and forth inside the ultrafiltration membrane 9 through the support rod 16. When the looper 14 moves to the left, the distance between the retaining ring 20 and the housing 3 and the spacer ring 13 continuously decreases, and the looper 14 is located to the left of the retaining ring 20. Pure water enters the inner side of the looper 14 through the cone hopper 24 and the one-way valve 3 25. The gap between the retaining ring 21 and the spacer ring 13 continuously increases, and pure water cannot enter the space between the retaining ring 21 and the spacer ring 13 through the one-way valve 23 and the one-way valve 3 25. Thus, water can be quickly drawn into the space between the retaining ring 21 and the spacer ring 13 after being filtered by the ultrafiltration membrane 9. Conversely, when the looper 14 moves to the right, water can be drawn into the space between the retaining ring 10 and the spacer ring 13 after being filtered by the ultrafiltration membrane 9, increasing the pressure difference inside and outside the ultrafiltration membrane 9, thereby improving the working efficiency of ultrafiltration of water.

[0022] The ultrafiltration membrane purification device of this water treatment plant provides power to all electrical equipment via an external power supply. During operation, pump 1 pumps the pre-filtered water into tank 2. As the water volume in tank 2 increases, the air at the top of tank 2 is compressed, increasing the water supply pressure. The water is then stably transported to the inside of the retainer 3 via connecting pipe 5. Inside the retainer 3, the water undergoes ultrafiltration processing through the ultrafiltration membrane 9, and then sequentially passes through the cone hopper 24 and one-way valve 25 into the inside of the looper 14. It then flows out through the side sleeve 11 and outlet 12. Motor 17 drives the eccentric wheel 18 to rotate. The eccentric wheel 18 drives the movable rod 15 via connecting rod 19. The movable rod 15, via support rod 16, drives the looper 14 to move back and forth inside the ultrafiltration membrane 9. When loop 14 moves to the left, the distance between retaining ring 20 and retaining cover 3 and spacer ring 13 continuously decreases. Pure water located to the left of retaining ring 20 enters the inner side of loop 14 through cone hopper 24 and one-way valve 3 25. The distance between retaining ring 21 and spacer ring 13 continuously increases, preventing pure water from entering the space between retaining ring 21 and spacer ring 13 through one-way valve 23 and one-way valve 3 25. This allows water to be quickly drawn into the space between retaining ring 21 and spacer ring 13 after filtration by ultrafiltration membrane 9. Conversely, when loop 14 moves to the right, water can be drawn into the space between retaining ring 20 and spacer ring 13 after filtration by ultrafiltration membrane 9, increasing the pressure difference between the inside and outside of ultrafiltration membrane 9, thereby improving the efficiency of ultrafiltration of water. When loop 14 moves to the left, it connects to retaining ring 20... When the ring is near the partition ring 13, the cone 24 is completely moved to the outer side between the retaining ring 10 and the partition ring 13. The purified water between the retaining ring 10 and the partition ring 13 cannot enter the inner side of the looper 14 through the cone 24 and the one-way valve 25. Some water flows directly outward through the inner side of the ultrafiltration membrane 9, while the other part flows outward through the one-way valve 22 on the retaining ring 10 between the retaining ring 10 and the retaining ring 21, and then outward through the ultrafiltration membrane 9. When the looper 14 moves to the right and the retaining ring 21 approaches the partition ring 13, the cone 24 is completely moved to the outer side between the retaining ring 21 and the partition ring 13. The purified water between the retaining ring 21 and the partition ring 13 cannot enter the inner side of the looper 14 through the cone 24 and the one-way valve 25. Water flows directly outward through the inner side of the ultrafiltration membrane 9, while another portion of water passes through the one-way valve 23 on the second retainer ring 21, enters between the first retainer ring 20 and the second retainer ring 21, and then flows outward through the ultrafiltration membrane 9. The sum of the lengths of the two outward-flowing sections of the ultrafiltration membrane 9 is greater than the distance between two adjacent spacers 13, thus automatically performing backwashing cleaning on the ultrafiltration membrane 9. This removes tiny impurities clogging the filter pores of the ultrafiltration membrane 9, effectively improving the cleaning effect of the real-time cleaning of the ultrafiltration membrane 9 and ensuring the filtration efficiency of the ultrafiltration membrane 9. During use, the second motor 28 drives the gear ring 27 to rotate on the outer side of the ultrafiltration membrane 9 through the meshing of the gear 29 and the gear ring 27, thereby driving the screw plate 26 to rotate on the outer side of the ultrafiltration membrane 9.The screw plate 26 pushes the impurities filtered out from the outer side of the ultrafiltration membrane 9, as well as the tiny impurities cleaned by backflushing the ultrafiltration membrane 9, to the right until the screw plate 26 pushes the impurities between the connecting sleeve 6 and the spacer 10. Then, the screw plate 26 pushes the impurities and some water to the right side between the connecting sleeve 6 and the spacer 10, and then discharges the impurities and a small amount of water through the discharge valve 8. This allows for real-time cleaning of the ultrafiltration membrane 9 during the filtration process, preventing the filtration speed of the ultrafiltration membrane 9 from gradually decreasing due to filtration work, and improving the purification efficiency of tap water.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrafiltration membrane purification device for water purification in a waterworks, comprising a water pump (1) and a tank (2), wherein a support assembly is installed on one side of the tank (2), the support assembly comprising a retainer (3) and a support plate (4), an ultrafiltration assembly is installed on the retainer (3), the ultrafiltration assembly comprising an ultrafiltration membrane (9) and a septum (10), characterized in that: The cover (3) is equipped with a bearing assembly, which includes a connecting sleeve (6) and a support sleeve (7). The support sleeve (7) is equipped with a driving assembly, which includes a motor (17) and a connecting rod (19). The inner side of the ultrafiltration membrane (9) is equipped with an isolation assembly, which includes a spacer ring (13) and a loose sleeve (14). The loose sleeve (14) is equipped with a connecting assembly, which includes a movable rod (15) and a support rod (16). The loose sleeve (14) is equipped with a pull-out assembly, which includes a retaining ring (20) and a retaining ring (21). The cover (3) is equipped with an outflow assembly, which includes a side sleeve (11) and an outlet (12).

2. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 1, characterized in that: The tank (2) is installed on one side of the water pump (1). The water pump (1) is connected to the bottom of the other side of the tank (2) through a water pipe. The support plate (4) is welded to the bottom of the cover (3). The bottom of one side of the tank (2) is connected to the bottom of one end of the cover (3) through a connecting pipe (5). The connecting sleeve (6) is installed on the other end of the cover (3) by bolts. The support sleeve (7) is installed on one side of the connecting sleeve (6) by bolts.

3. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 2, characterized in that: The septum (10) is welded to the inside of the sleeve (6). One end of the ultrafiltration membrane (9) is sealed and installed on the inner wall of one end of the cover (3) by bolts. The other end of the ultrafiltration membrane (9) is sealed and installed on the septum (10) by a sealing ring. The inner diameter and outer diameter of the septum (10) are equal to the inner diameter and outer diameter of the ultrafiltration membrane (9).

4. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 3, characterized in that: The top of one end of the cover (3) is bolted to a motor (28). A screw plate (26) is fitted on the outer side of the ultrafiltration membrane (9). A toothed ring (27) is welded to one end of the screw plate (26). A gear (29) is clamped on the top of the toothed ring (27). One side of the gear (29) passes through the inner wall of the cover (3) through a sealing ring and is keyed to the output shaft of the motor (28).

5. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 4, characterized in that: The spiral of the screw plate (26) is wound around the outer side of the ultrafiltration membrane (9) and extends to the inner side of the connecting sleeve (6). The outer side of the screw plate (26) is clamped on the inner wall of the connecting sleeve (6). The screw plate sleeve (26) is located on the outer side of the spacer (10). The bottom of the connecting sleeve (6) is bolted with a feed valve (8). The connecting sleeve (6) is connected to the feed valve (8).

6. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 5, characterized in that: The outer side of the septum (13) is welded to the inner wall of the ultrafiltration membrane (9). The septum (13) is evenly distributed on the inner side of the ultrafiltration membrane (9). The loose sleeve (14) is installed on the inner side of the ultrafiltration membrane (9). The septum (13) is sleeved on the outer side of the loose sleeve (14). The first retaining ring (20) and the second retaining ring (21) are both welded to the outer side of the loose sleeve (14). The first retaining ring (20), the second retaining ring (21) and the septum (13) are alternately distributed on the inner side of the ultrafiltration membrane (9).

7. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 1, characterized in that: The side sleeve (11) is welded to one end of the cover (3), one end of the loop (14) is locked inside the side sleeve (11), the outlet (12) is opened on the side wall of the side sleeve (11), the inside of the loop (14) is connected to the outlet (12) through the side sleeve (11), and the other end of the loop (14) extends to the inside of the spacer (10).

8. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 7, characterized in that: The movable rod (15) is installed inside the sleeve (14). The movable rod (15) is fixedly connected to the inner wall of the sleeve (14) through the support rod (16). One end of the movable rod (15) passes through the spacer (10) through the sealing ring and extends to the inner side of the support sleeve (7). The motor (17) is installed on the top of the support sleeve (7) by bolts. An eccentric wheel (18) is installed on the inner side of the support sleeve (7). The top of the eccentric wheel (18) is keyed to the output shaft of the motor (17). One end of the connecting rod (19) is installed on the eccentric wheel (18) through a bearing. The other end of the connecting rod (19) is installed on one end of the movable rod (15) through a bearing.

9. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 8, characterized in that: One-way valve 1 (22) is installed on the first retaining ring (20), and one-way valve 2 (23) is installed on the second retaining ring (21). The one-way valve 1 (22) and one-way valve 2 (23) are evenly distributed on the first retaining ring (20) and the second retaining ring (21), respectively.

10. The ultrafiltration membrane purification device for water purification in a waterworks according to claim 9, characterized in that: The inner wall of the loop (14) is welded with a cone hopper (24), and a one-way valve three (25) is installed on the inner side of the cone hopper (24). The outer side of the loop (14) is connected to the inner side of the loop (14) in one direction through the cone hopper (24) and the one-way valve three (25). The width of the cone hopper (24) is less than the distance between the first retaining ring (20) and the second retaining ring (21).

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