An automatic discharge filter system for water treatment

Abstract

The utility model discloses a kind of water treatment automatic deslagging filter systems, it is related to the pretreatment field of water treatment process front end, including hollow cylindrical filter outer tube, its top opening is closed through end cap, bottom side is equipped with bottom drain and automatic blowdown valve, upper and lower end of side face is equipped with water inlet and water outlet respectively.Filter screen with sealing ring is detachably installed in outer tube inner wall, end cap top rotating motor drives the rotating shaft passing through end cap, drives bottom scraper and brush rotation to scrape filter screen inner wall.End cap is connected with outer tube by lifting structure containing hand-operated lifting screw rod, and it is supplemented by multiple groups of screw ring compression, and the bottom side of the inside of outer tube is equipped with the second coupling support rotating shaft lower end.The system is prevented by rotating brush, and deslagging is discharged by timing blowdown valve, realizes automatic operation, significantly reduces manual operation, guarantees equipment stability, improves filtration efficiency and water quality, is convenient to maintain and prolongs equipment life, especially suitable for the pretreatment of DMF (i.

Description

Technical Field

[0001] This utility model relates to the field of pretreatment at the front end of water treatment processes, specifically to an automatic slag discharge filter system for water treatment. Background Technology

[0002] On the one hand, during the thermal distillation separation process to recover DMF from the process wastewater of the synthetic leather industry, impurities in the aqueous solution gradually adhere to the inner wall of the heat exchanger tubes, causing blockage. Regular cleaning with water guns is required to unclog the tubes, resulting in cleaning water containing a high solids content and DMF. On the other hand, the batching tanks on the production line need cleaning, and since DMF is used as a solvent for batching, the resulting cleaning water contains DMF and other material impurities.

[0003] DMF in the cleaning water has reuse value, and the cost of treating all the water as wastewater is high. Therefore, the cleaning water is treated by membrane separation equipment, and only a small amount of concentrated liquid is discharged to the wastewater treatment plant. The large amount of DMF-containing clear liquid is returned to the thermal distillation separation process for further treatment.

[0004] However, the cleaning water contains a considerable amount of solid particles, which can easily cause blockage of the membrane equipment's feed pump and filter element, leading to abnormal equipment shutdown. Therefore, a precision filter needs to be installed at the front end of the membrane equipment to intercept solid impurities and reduce the solid content of the feed water to the membrane separation equipment.

[0005] However, during use, the high solid content of the cleaning water causes ordinary precision filters to become clogged, requiring frequent cleaning and manual switching, which is a lot of work. When the equipment is running normally, no one is on site to supervise it, and filter blockage cannot be detected in time, which can easily lead to poor water intake or even water cut-off in the membrane separation equipment, causing the equipment to operate without water and damaging the components.

[0006] To address these issues, an automatic slag discharge filter system for water treatment is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide an automatic slag discharge filter system for water treatment. By using an automatic slag discharge filter, the system aims to solve the problems of frequent manual switching of filters, which is labor-intensive, and the inability to detect filter blockage in time, which leads to abnormal equipment operation. In use, it can not only filter impurities in water, but also automatically discharge slag and flush, replacing manual filter replacement, reducing labor, ensuring smooth water intake and stable water quality for water treatment equipment, and guaranteeing the safe operation of the equipment.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An automatic sludge discharge filter system for water treatment includes an outer filter cylinder, which is fixed by a bracket. The outer filter cylinder is a hollow cylinder with an opening at the top, a bottom outlet connected to the bottom side, an inlet connected to the upper side, and an outlet connected to the lower side. A filter screen is detachably mounted on the inner wall of the outer filter cylinder. An automatic drain valve is installed on the bottom outlet.

[0010] The opening is covered by the end cap, and the end cap is connected to the outer cylinder of the filter via a lifting structure;

[0011] A coupling is fixedly installed at the bottom of the end cover, and a rotating motor is installed at the top of the end cover. The rotating shaft of the rotating motor passes through the coupling between the end cover and its bottom and extends into the bottom middle of the filter outer cylinder. A scraper is fixedly installed on the outer side of the rotating shaft, and a brush is installed on the scraper.

[0012] The filter screen is equipped with sealing rings at both the top and bottom.

[0013] The end cap and the outer cylinder of the filter are connected by a lifting structure. The lifting structure includes an end cap connecting arm extending outward from the end cap and an outer cylinder connecting arm extending outward from the outer cylinder of the filter. The end cap connecting arm extends downward to provide a guide sleeve, and the outer cylinder connecting arm of the filter is provided upward to provide a guide inner cylinder. The guide sleeve and the guide inner cylinder are fitted together and slidably connected. A hand-cranked lifting screw is rotatably connected to the top of the guide sleeve. A threaded hole is provided in the center of the guide inner cylinder, and the hand-cranked lifting screw is threadedly connected to the threaded hole in the center of the guide inner cylinder.

[0014] A screw ring is added between the end cap and the outer cylinder of the filter to tighten and fix them.

[0015] The screw rings are in multiple sets.

[0016] A second coupling is provided on the bottom side inside the outer cylinder of the filter, and the lower end of the rotating shaft of the rotating motor is rotatably connected to the second coupling.

[0017] The working mechanism of this automatic sludge discharge filter for water treatment is based on the synergistic operation logic of "continuous filtration - active cleaning - timed sludge discharge". The core components achieve automated impurity interception and sludge discharge through structural cooperation. The specific process is as follows:

[0018] Raw water enters the filter cylinder through the inlet on the side. Under water pressure, it flows to the removable filter screen inside. The filter screen's pore size intercepts solid particulate impurities in the water. The filtered clean water passes through the filter screen and exits through the outlet at the lower side, entering the subsequent membrane separation equipment. During this process, the sealing rings at the upper and lower ends of the filter screen ensure strict separation between the raw water and the clean water, preventing unfiltered raw water from flowing to the clean water side and ensuring filtration accuracy.

[0019] Meanwhile, the rotary motor on the end cap continuously drives the shaft to rotate, which in turn drives the scraper and brush to rotate and sweep along the inner wall of the filter screen via the coupling. The brush removes impurities attached to the filter screen in real time, preventing particles from accumulating and clogging the mesh, and ensuring smooth water flow; the scraped impurities are deposited at the bottom of the filter by gravity, forming a high concentration of sludge.

[0020] The automatic drain valve, triggered by a timer controller, opens periodically to quickly discharge the high-concentration sludge deposited at the bottom, completing automatic sludge removal. When it is necessary to replace the filter screen or maintain internal components, the end cover can be easily lifted by manually cranking the lifting screw to drive the lifting mechanism. The tightening and loosening of the screw rings allows for convenient disassembly and assembly. The entire process eliminates the need for frequent manual filter switching, achieving continuous automated operation of "filtration-cleaning-sludge removal" and ensuring the stability of the pre-treatment process.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Achieve fully automated operation and reduce labor costs: The brush driven by the rotary motor scrapes the inner wall of the filter screen in real time, and the automatic drain valve is controlled by the timer controller to discharge sludge. The entire process does not require frequent manual cleaning or filter switching, which greatly reduces the amount of manual operation and significantly reduces labor input and management costs.

[0023] To prevent equipment malfunctions caused by clogging and ensure system stability: Real-time scraping prevents impurities from accumulating and clogging the filter screen, and timed sludge removal removes sediment in time. This solves the problem of poor water intake and flow interruption in membrane separation equipment caused by clogging that is not detected in time in traditional filters. It also avoids component damage caused by the equipment running without water and ensures the continuous and stable operation of the entire water treatment system.

[0024] Improved filtration efficiency and water quality stability: The filter screen remains clean, ensuring smooth water flow unaffected by impurities and maintaining stable filtration efficiency. Simultaneously, the sealing rings at the top and bottom of the filter screen effectively prevent cross-contamination between raw and clean water, ensuring that the effluent meets the inlet requirements of subsequent membrane separation equipment and enhancing the overall reliability of the water treatment process.

[0025] Easy maintenance and extended equipment life: The end cover can be easily opened by hand-cranked lifting device, which facilitates the replacement of internal components such as filter screens, reducing maintenance difficulty and time costs; in addition, it reduces the frequent start-up and shutdown of equipment and abnormal wear caused by blockage, indirectly extending the service life of the filter and subsequent membrane separation equipment.

[0026] Optimize the resource recycling process: efficiently intercept solid impurities in the cleaning water, ensure the treatment effect of membrane separation equipment on DMF-containing cleaning water, and enable a large amount of DMF-containing clarified liquid to be reused in the thermal distillation separation process, thereby improving the DMF reuse rate, reducing wastewater treatment volume and related costs, and achieving efficient resource utilization and cost savings. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an automatic slag discharge filter system for water treatment according to the present invention;

[0028] In the diagram: 1. End cap; 2. Lifting structure; 3. Rotating motor; 4. Shaft; 5. Screw ring; 6. Coupling; 7. Brush; 8. Scraper; 9. Bracket; 10. Automatic drain valve; 11. Filter outer cylinder; 12. Filter screen; 13. Inlet; 14. Outlet; 15. Bottom drain; 16. Sealing ring; 17. Second coupling; 21. End cap connecting arm; 22. Filter outer cylinder connecting arm; 23. Guide sleeve; 24. Guide inner cylinder; 25. Hand-cranked lifting screw. Detailed Implementation

[0029] The technical solutions of the present invention will now be described in detail with reference to the accompanying drawings of the embodiments.

[0030] like Figure 1 As shown, an automatic slag discharge filter system for water treatment includes an outer filter cylinder 11, which is fixed by a bracket 9. The outer filter cylinder 11 is a hollow cylinder with an opening at the top, a bottom outlet 15 at the bottom, an inlet 13 at the upper end of the side, and an outlet 14 at the lower end of the side. A filter screen 12 is detachably installed on the inner wall of the outer filter cylinder 11. An automatic drain valve 10 is installed on the bottom outlet 15.

[0031] The opening is covered by the end cap 1, and the end cap 1 is connected to the filter outer cylinder 11 through the lifting structure 2;

[0032] The end cover 1 is fixedly installed with a coupling 6 at the bottom, and a rotating motor 3 is provided at the top of the end cover 1. The rotating shaft 4 of the rotating motor 3 passes through the end cover 1 and the coupling 6 at its bottom and extends into the middle bottom side of the filter outer cylinder 11. A scraper 8 is fixedly provided on the outer side of the rotating shaft 4, and a brush 7 is provided on the scraper 8.

[0033] The filter screen 12 is provided with sealing rings 16 at both the upper and lower ends.

[0034] The end cap 1 and the filter outer cylinder 11 are connected by a lifting structure 2. The lifting structure 2 includes an end cap connecting arm 21 extending outward from the end cap 1 and a filter outer cylinder connecting arm 22 extending outward from the filter outer cylinder 11. The end cap connecting arm 21 extends downward to provide a guide sleeve 23, and the filter outer cylinder connecting arm 22 is provided upward to provide a guide inner cylinder 24. The guide sleeve 23 and the guide inner cylinder 24 are fitted together and slidably connected. A hand-cranked lifting screw 25 is rotatably connected to the top of the guide sleeve 23. A threaded hole is provided in the center of the guide inner cylinder 24, and the hand-cranked lifting screw 25 is threadedly connected to the threaded hole in the center of the guide inner cylinder 24.

[0035] A screw ring 5 is added between the end cap 1 and the outer cylinder 11 of the filter to press and fix them.

[0036] The screw ring 5 is in multiple sets.

[0037] A second coupling 17 is provided on the bottom side inside the outer cylinder 11 of the filter, and the lower end of the rotating shaft 4 of the rotating motor 3 is rotatably connected to the second coupling 17.

[0038] The specific implementation method of the automatic slag discharge filter for water treatment according to this utility model is as follows:

[0039] The filter outer cylinder 11 is a hollow cylindrical structure, fixed to the working area by a bottom bracket 9. The inlet 13 on its upper side connects to a cleaning water source containing impurities, and the outlet 14 on its lower side connects to subsequent membrane separation equipment. An automatic drain valve 10 is installed on the bottom drain port 15 and connected to a drain pipe; the automatic drain valve 10 is electrically connected to an external timer controller. A filter screen 12 is removably installed on the inner wall of the filter outer cylinder 11. Sealing rings are installed at both the upper and lower ends of the filter screen 12 to ensure that raw water can only flow through the filter screen 12 to the outlet 14, preventing cross-flow.

[0040] The end cap 1 is closed at the top opening of the filter outer cylinder 11. The end cap 1 and the filter outer cylinder 11 are pressed and fixed together by a screw ring 5. At the same time, the two are connected by a lifting structure. The end cap connecting arm extending from the outside of the end cap 1 is provided with a guide sleeve downward, and the outer cylinder connecting arm extending from the outside of the filter outer cylinder 11 is provided with a guide inner cylinder upward. The guide sleeve and the guide inner cylinder are fitted and slid together. The hand-cranked lifting screw 2 rotatably connected to the top of the guide sleeve is threadedly connected to the central threaded hole of the guide inner cylinder. The end cap 1 can be raised and lowered by rotating the hand-cranked lifting screw 2, which makes it easy to open the end cap 1 to replace internal parts such as the filter screen 12.

[0041] A rotary motor 3 is installed on the top of the end cover 1. Its shaft 4 passes through the end cover 1 and is connected to the output end of the rotary motor 3 at the top. The lower end is connected to the coupling 6 and the scraper 8 in sequence. The lower end of the shaft 4 is rotatably connected to the second coupling on the bottom side of the inner side of the filter outer cylinder 11 to enhance stability. A brush 7 is installed on the outside of the scraper 8 and is in close contact with the inner wall of the filter screen 12.

[0042] During operation, the rotary motor 3 starts, driving the scraper 8 and brush 7 to rotate continuously along the inner wall of the filter screen 12 via the rotating shaft 4 and coupling 6. Raw water enters through the inlet 13, is filtered by the filter screen 12, and the clean water is discharged from the outlet 14 to subsequent equipment. Impurities are intercepted on the inner side of the filter screen 12 and scraped away by the brush 7 in real time, settling to the bottom of the filter outer cylinder 11 under gravity. The timer controller triggers the automatic drain valve 10 to open according to the set cycle, and the high-concentration sludge deposited at the bottom is discharged through the bottom outlet 15, completing the automatic sludge removal. After the sludge removal is completed, the automatic drain valve 10 closes, and the filter continues to maintain the filtration state. The entire process achieves automated and coordinated operation of filtration, cleaning, and sludge removal, without the need for frequent manual intervention.

Claims

1. An automatic slag discharge filter system for water treatment, comprising a filter outer cylinder (11), wherein the filter outer cylinder (11) is fixed on one side by a bracket (9), characterized in that, The outer cylinder (11) of the filter is a hollow cylinder with an opening at the top, a bottom outlet (15) at the bottom, an inlet (13) at the upper end of the side, and an outlet (14) at the lower end of the side. A filter screen (12) is detachably installed on the inner wall of the outer cylinder (11). An automatic drain valve (10) is installed on the bottom outlet (15). The opening is covered by the end cap (1), and the end cap (1) is connected to the outer cylinder of the filter (11) through a lifting structure (2); The end cover (1) is fixedly installed with a coupling (6) at the bottom, and a rotating motor (3) is provided at the top of the end cover (1). The rotating shaft (4) of the rotating motor (3) passes through the end cover (1) and the coupling (6) at its bottom and extends into the middle bottom side of the filter outer cylinder (11). A scraper (8) is fixedly provided on the outer side of the rotating shaft (4), and a brush (7) is provided on the scraper (8).

2. The automatic slag discharge filter system for water treatment according to claim 1, characterized in that, The filter screen (12) is provided with sealing rings (16) at both the upper and lower ends.

3. The automatic slag discharge filter system for water treatment according to claim 1, characterized in that, The end cap (1) and the filter outer cylinder (11) are connected by a lifting structure (2). The lifting structure (2) includes an end cap connecting arm (21) extending outward from the end cap (1) and a filter outer cylinder connecting arm (22) extending outward from the filter outer cylinder (11). The end cap connecting arm (21) is provided with a guide sleeve (23) extending downward. The filter outer cylinder connecting arm (22) is provided with a guide inner cylinder (24) extending upward. The guide sleeve (23) and the guide inner cylinder (24) are fitted together and slidably connected. A hand-cranked lifting screw (25) is rotatably connected to the top of the guide sleeve (23). A threaded hole is provided in the center of the guide inner cylinder (24). The hand-cranked lifting screw (25) is threadedly connected to the threaded hole in the center of the guide inner cylinder (24).

4. The automatic slag discharge filter system for water treatment according to claim 1, characterized in that, A screw ring (5) is added between the end cap (1) and the outer cylinder of the filter (11) to press and fix them.

5. The automatic slag discharge filter system for water treatment according to claim 4, characterized in that, The screw rings (5) are in multiple sets.

6. The automatic slag discharge filter system for water treatment according to claim 1, characterized in that, The bottom of the filter outer cylinder (11) is provided with a second coupling (17), and the lower end of the shaft (4) of the rotating motor (3) is rotatably connected to the second coupling (17).

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