A cloth cleaning and integrated equipment for recycling of printing and dyeing wastewater

Abstract

This utility model relates to the field of fabric cleaning technology and discloses an integrated fabric cleaning device for recycling dyeing and printing wastewater. It includes a cleaning tank and a water tank. A water cavity is formed between the outer side of the water tank and the inside of the cleaning tank. An inlet pipe communicating with the inside of the water cavity is horizontally connected to the upper side of the cleaning tank. A feed pipe communicating with the inside of the water cavity is connected to the surface of the cleaning tank above the inlet pipe. A drain pipe communicating with the inside of the water cavity is connected to the lower surface of the cleaning tank on the side away from the inlet pipe. This utility model's technical solution, by setting a water cavity inside the cleaning tank below the water tank, allows dyeing and printing wastewater to enter the water cavity, mix with flocculant to precipitate impurities. Most of the precipitate is discharged with some wastewater, while some of the precipitated wastewater is filtered by filter cotton and then enters the water tank to clean the fabric. The wastewater after fabric cleaning also enters the water cavity for sedimentation and filtration, achieving the purpose of recycling and reducing the total amount of wastewater requiring subsequent treatment.

Description

Technical Field

[0001] This utility model relates to the field of fabric cleaning technology, specifically to an integrated fabric cleaning device that recycles dyeing and printing wastewater. Background Technology

[0002] Dyeing and printing are processing techniques for dyeing, printing, and finishing textile materials. Dyeing gives fabrics a uniform color and enhances their appearance; printing creates specific patterns on the fabric surface, adding an artistic touch; finishing improves the fabric's feel, wrinkle resistance, and water resistance. Dyeing and printing techniques are diverse, encompassing both traditional and modern processes, enabling textiles to meet different style and functional needs. They are widely used in clothing, home textiles, and other fields. The purpose of washing after dyeing and printing is to remove loose dye and unfixed dye from the fabric surface to prevent color fading during subsequent use; to wash away residual auxiliaries to avoid affecting the fabric's feel and performance; and to reduce defects such as stains and dirt, thereby improving the quality and appearance of the finished dyed and printed products.

[0003] Washing dyed fabrics with clean water after dyeing results in significant waste. Impurities in the dyeing wastewater make it unsuitable for fabric washing, requiring a large amount of water and generating even more wastewater. This necessitates treating both dyeing and washing wastewater simultaneously, leading to a substantial wastewater volume. To reduce the overall wastewater volume, a device that can utilize dyeing wastewater for washing is needed. Therefore, we propose an integrated fabric washing system that recycles dyeing wastewater. Utility Model Content

[0004] The purpose of this invention is to provide an integrated fabric cleaning device for recycling dyeing and printing wastewater. By setting a water chamber inside the cleaning tank below the water tank, dyeing and printing wastewater can enter the water chamber, mix with flocculant to precipitate impurities. Most of the precipitate is discharged with some wastewater, and some of the precipitated wastewater is filtered by filter cotton and then enters the water tank to clean the fabric. The wastewater after fabric cleaning also enters the water chamber for sedimentation and filtration, achieving the purpose of recycling. This can reduce the total amount of wastewater that needs to be treated later and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated fabric cleaning device for recycling dyeing and printing wastewater, comprising a cleaning tank and a water tank. The water tank is fixed inside the cleaning tank, and a water cavity is formed between the outer side of the water tank and the inside of the cleaning tank. An inlet pipe communicating with the inside of the water cavity is horizontally connected to the upper side of the cleaning tank, and a feed pipe communicating with the inside of the water cavity is connected to the surface of the cleaning tank above the inlet pipe. A drain pipe communicating with the inside of the water cavity is connected to the lower surface of the cleaning tank on the side away from the inlet pipe. A support mesh is horizontally fixed inside the water cavity above the drain pipe, and filter cotton is placed on the surface of the support mesh. A longitudinally penetrating opening is opened on the surface of the water tank on the side of the filter cotton. A sludge pump is provided on the side of the cleaning tank below the inlet pipe. The inlet of the sludge pump is connected to a suction pipe, which passes through the water cavity and connects to the lower interior of the water tank. The outlet of the sludge pump is connected to the inlet pipe through a secondary pipe.

[0006] By adopting the above technical solution, the dyeing and printing wastewater is precipitated and filtered before entering the water tank for washing fabrics. The wastewater after washing is then precipitated and filtered again before entering the water tank, achieving the purpose of recycling. No additional clean water is added during the entire process, ensuring that the total amount of discharged sewage does not exceed the amount of dyeing and printing wastewater, thereby reducing the total amount of sewage that needs to be treated subsequently.

[0007] Optionally, the side of the cleaning tank above the filter cotton is connected to multiple equidistant flushing pipes, which are connected to the inside of the water chamber and are equipped with valves.

[0008] By adopting the above technical solution, the flushing pipe can flush the filter cotton with clean water in reverse. Regular backwashing of the filter cotton can increase its service life.

[0009] Optionally, the cleaning box surface on the side of the filter cotton is provided with a side opening, and a cover plate is installed on the outer surface of the cleaning box at the side opening by bolts.

[0010] By adopting the above technical solution, the cover plate can be removed to expose the side opening, thereby allowing the filter cotton to be replaced.

[0011] Optionally, guide rollers are longitudinally rotatable and mounted on both sides of the upper surface of the cleaning tank and both sides of the inner surface of the water tank.

[0012] By adopting the above technical solution, the purpose of guiding and transporting the fabric is achieved through guide rollers.

[0013] Optionally, a one-way valve is installed on the secondary pipe, with the flow direction of the one-way valve facing the inlet pipe.

[0014] By adopting the above technical solution, wastewater in the inlet pipe is prevented from flowing back into the secondary pipe through the one-way valve.

[0015] Optionally, baffles are fixed obliquely on the outer surface of the water tank and the inner surface of the cleaning box on both sides below the support net, and the baffles on both sides are distributed alternately.

[0016] By adopting the above technical solution, when a small amount of sediment in the wastewater rises with the water flow, the baffle further blocks the sediment, making it difficult for the sediment to rise with the water flow.

[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0018] 1. The technical solution of this application has a water chamber inside the washing tank below the water tank, which allows the dyeing and printing wastewater to enter the water chamber, mix with the flocculant to precipitate impurities. Most of the precipitate is discharged with part of the wastewater, and part of the precipitated wastewater is filtered by filter cotton and enters the water tank to wash the fabric. The wastewater after washing the fabric also enters the water chamber to be precipitated and filtered, so as to achieve the purpose of recycling part of the wastewater. The total amount of wastewater discharged in the end will not exceed the total amount of dyeing and printing wastewater, which can reduce the total amount of sewage that needs to be treated later.

[0019] 2. The technical solution of this application uses a backwashing device to rinse the filter cotton, thereby improving its service life and making it easy to remove and replace the filter cotton. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to this utility model.

[0022] Figure 2 This is a detailed structural diagram of the integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to this utility model.

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the cover plate of the integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to this utility model.

[0024] In the diagram: 1. Cleaning tank; 11. Water inlet pipe; 12. Feed pipe; 13. Sewage pipe; 14. Rinsing pipe; 15. Side opening; 2. Water tank; 21. Guide roller; 22. Opening; 3. Water chamber; 31. Baffle; 32. Support mesh; 33. Filter cotton; 34. Cover plate; 341. Bolt; 4. Sewage pump; 41. Pumping pipe; 42. Secondary pipe; 421. Check valve. Detailed Implementation

[0025] Please see Figure 1-3This utility model provides a technical solution: an integrated fabric cleaning device for recycling dyeing and printing wastewater, including a cleaning tank 1 and a water tank 2. The water tank 2 is fixed inside the cleaning tank 1. Guide rollers 21 are longitudinally rotatably installed on both sides of the upper surface of the cleaning tank 1 and both sides of the inner surface of the water tank 2. The fabric can pass through the top of the guide rollers 21 on both sides of the cleaning tank 1 and through the bottom of the guide rollers 21 in the water tank 2. When pulled by the pulling device, the fabric can be guided by the guide rollers 21 and pass through the inside of the water tank 2. When there is cleaning water inside the water tank 2, the fabric can be cleaned.

[0026] To utilize the dyeing and printing wastewater, a water cavity 3 is formed between the outer side of the water tank 2 and the interior of the washing tank 1. An inlet pipe 11, communicating with the interior of the water cavity 3, is horizontally connected to the upper side of the washing tank 1. A feed pipe 12, communicating with the interior of the water cavity 3, is connected to the surface of the washing tank 1 above the inlet pipe 11. A drain pipe 13, communicating with the interior of the water cavity 3, is connected to the lower surface of the washing tank 1 on the side away from the inlet pipe 11. A support mesh 32 is horizontally fixed inside the water cavity 3 above the drain pipe 13, and filter cotton 33 is placed on the surface of the support mesh 32. A longitudinally penetrating opening 22 is formed on the surface of the water tank 2 on the side of the filter cotton 33, wherein the height of the opening 22 is less than that of the inlet pipe 11. In operation, the dyeing wastewater pipe is connected to the inlet pipe 11, the feed pipe 12 is connected to the suspending agent supply pipe, and the drain pipe 13 is connected to the inlet of the wastewater treatment equipment. The dyeing wastewater enters the water chamber 3 from the inlet pipe 11, and flocculant is added from the feed pipe 12. The two mix and flow on the right side of the water chamber 3, which can fully mix and cause insoluble impurities to flocculate and settle at the bottom. Some wastewater carrying sediment is discharged from the drain pipe 13 to the subsequent wastewater treatment equipment. The wastewater with less sediment flows upward and is filtered through the filter cotton 33 before entering the water tank 2 through the opening 22. Thus, the wastewater that has been settled and filtered can be used to clean the fabric.

[0027] To further utilize the wastewater from washing the fabric and reduce the total amount of wastewater discharged, a sludge pump 4 is installed on the side of the washing tank 1 below the inlet pipe 11. The inlet of the sludge pump 4 is connected to a suction pipe 41, which passes through the water chamber 3 and connects to the lower interior of the water tank 2. The outlet of the sludge pump 4 is connected to the inlet pipe 11 through a secondary pipe 42. When in use, the sludge pump 4 is started simultaneously, and the wastewater used for washing is drawn out through the suction pipe 41 and flows back to the inlet pipe 11 through the secondary pipe 42 and re-enters the water chamber 3. This ensures that the wastewater entering through the inlet pipe 11 is faster than the drainage speed through the drain pipe 13, thus ensuring that enough settled water flows upward to be filtered by the filter cotton 33 and enters the water tank 2, achieving the recycling of the washing wastewater, reducing the total amount of wastewater discharged, and reducing the total amount of wastewater that needs to be treated.

[0028] Since the main impurities in the dyeing and printing wastewater and the fabric washing wastewater are soluble impurities and a small amount of small particulate solid impurities, they will not cause the sludge pump 4 to be blocked. Similarly, the water inlet pipe 11 used for water intake and the water pump 4's water pumping and water delivery pipe 41 and auxiliary pipe 42 will not be blocked. Furthermore, a one-way valve 421 is installed on the auxiliary pipe 42, with the flow direction of the one-way valve 421 facing the water inlet pipe 11, which can prevent the wastewater in the water inlet pipe 11 from flowing back into the auxiliary pipe 42.

[0029] Both sides of the water tank 2 below the branch net 32 ​​have baffles 31 fixed at an angle on the outer surface and the inner surface of the cleaning tank 1. The baffles 31 on both sides are staggered. When a small amount of sediment in the wastewater rises with the water flow, the baffles 31 further block the sediment, making it difficult for the sediment to rise with the water flow, reducing the amount of impurities that the filter cotton 33 needs to filter, thus extending its service life.

[0030] To further improve the service life of filter cotton 33, multiple equidistant flushing pipes 14 are connected to the side of the cleaning tank 1 above filter cotton 33. The flushing pipes 14 are connected to the inside of the water chamber 3, and valves are installed on the flushing pipes 14. During use, the supply of wastewater and flocculant can be stopped and the operation of the sewage pump 4 can be stopped. The valve on the flushing pipe 14 can be opened to allow clean water to enter the upper right side of the water chamber 3 to backwash the filter cotton 33 and discharge the sewage from the drain pipe 13. After flushing, the valve on the flushing pipe 14 can be closed.

[0031] The cleaning box 1 on the side of the filter cotton 33 is provided with a side opening 15. The outer surface of the cleaning box 1 at the side opening 15 is fitted with a cover plate 34 by bolts 341. After unscrewing the bolts 341 and removing the cover plate 34, the filter cotton 33 can be replaced through the side opening 15. After the filter cotton 33 is replaced, the cover plate 34 needs to be installed again to seal the side opening 15.

[0032] In use, the dyeing wastewater pipe is connected to the inlet pipe 11, the feed pipe 12 is connected to the suspending agent supply pipe, and the drain pipe 13 and rinsing pipe 14 are connected to the inlet of the wastewater treatment equipment and the clean water supply pipe, respectively. The fabric passes over the guide rollers 21 on both sides of the washing tank 1 and under the guide rollers 21 in the water tank 2, and is connected to the traction device, so that the fabric can be pulled, allowing the dyeing wastewater to enter the water chamber 3 from the inlet pipe 11. At the same time, flocculant is added from the feed pipe 12. The two mix and flow on the right side of the water chamber 3, which can fully mix and cause insoluble impurities to flocculate and settle at the bottom. Some wastewater carries the sediment out of the drain pipe 13. The wastewater, containing less sediment, flows upward through multiple baffles 31, further reducing the amount of sediment flowing upward. After being filtered by filter cotton 33, it enters the water tank 2 through opening 22. The wastewater that has been settled and filtered can be used to clean the fabric. When the sludge pump 4 is started, the wastewater used for cleaning is drawn out through the pump pipe 41 and flows back to the inlet pipe 11 through the secondary pipe 42 and re-enters the water chamber 3. This ensures that the wastewater entering through the inlet pipe 11 is faster than the drainage speed through the drain pipe 13, thus ensuring that enough settled water flows upward to be filtered by the filter cotton 33 and enters the water tank 2. After a period of use, the supply of wastewater and flocculant can be stopped and the sewage pump 4 can be stopped. The valve on the flushing pipe 14 can be opened to allow clean water to enter the upper right side of the water chamber 3 to backwash the filter cotton 33 and discharge the sewage from the drain pipe 13. After flushing, the valve on the flushing pipe 14 can be closed. The bolt 341 can also be unscrewed to remove the cover plate 34, so that the filter cotton 33 can be replaced through the side opening 15. After the filter cotton 33 is replaced, the cover plate 34 can be reinstalled to seal the side opening 15.

Claims

1. An integrated fabric cleaning device for recycling dyeing and printing wastewater, comprising a cleaning tank (1) and a water tank (2), characterized in that: The water tank (2) is fixed inside the cleaning box (1). A water cavity (3) is formed between the outer side of the water tank (2) and the inside of the cleaning box (1). A water inlet pipe (11) communicating with the inside of the water cavity (3) is horizontally connected above the side of the cleaning box (1). A feed pipe (12) communicating with the inside of the water cavity (3) is connected to the surface of the cleaning box (1) above the water inlet pipe (11). A drain pipe (13) communicating with the inside of the water cavity (3) is connected to the lower surface of the cleaning box (1) on the side away from the water inlet pipe (11). A support net (32) is horizontally fixed inside the water cavity (3) above the drain pipe (13). A filter cotton (33) is placed on the surface of the support net (32). A longitudinal through opening (22) is opened on the surface of the water tank (2) on the side of the filter cotton (33). A sludge pump (4) is installed on the side of the cleaning tank (1) below the water inlet pipe (11). The inlet of the sludge pump (4) is connected to a water pump pipe (41). The water pump pipe (41) passes through the water cavity (3) and connects to the lower interior of the water tank (2). The outlet of the sludge pump (4) is connected to the water inlet pipe (11) through a secondary pipe (42).

2. The integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to claim 1, characterized in that: The cleaning tank (1) above the filter cotton (33) is connected to a number of equidistant flushing pipes (14) on its side. The flushing pipes (14) are connected to the inside of the water chamber (3), and valves are installed on the flushing pipes (14).

3. The integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to claim 1, characterized in that: The cleaning box (1) on the side of the filter cotton (33) has a side opening (15), and a cover plate (34) is installed on the outer surface of the cleaning box (1) at the side opening (15) by bolts (341).

4. The integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to claim 1, characterized in that: Guide rollers (21) are longitudinally rotatable and mounted on both sides of the upper surface of the two sides of the cleaning box (1) and the inner surface of the water tank (2).

5. The integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to claim 1, characterized in that: A one-way valve (421) is installed on the secondary pipe (42), and the flow direction of the one-way valve (421) is towards the water inlet pipe (11).

6. The integrated fabric cleaning equipment for recycling dyeing and printing wastewater according to claim 1, characterized in that: The outer surface of the water tank (2) on both sides below the branch net (32) and the inner surface of the cleaning box (1) are both fixed with baffles (31) at an incline, and the baffles (31) on both sides are distributed in an alternating manner.

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