Textile printing and dyeing water pretreatment device

Abstract

The utility model discloses a textile printing and dyeing water pretreatment device, which relates to the technical field of printing and dyeing wastewater treatment, and comprises a pretreatment box, a coarse filter screen plate and a fine filter screen plate, a first connecting port and a second connecting port are respectively formed in a partition plate between the sedimentation tank and the filter tank and between the filter tank and the oil removal tank, and two pairs of limiting plates are arranged in the filter tank side by side. Large suspended solids and particles in textile printing and dyeing water can sink to the water bottom under the action of gravity through the sedimentation tank, textile products such as cotton, wool and chemical fibers in the printing and dyeing wastewater can be filtered out through the filter screen plate arranged in the filter tank, and the turbidity and the suspended solid content of the wastewater can be effectively reduced through sedimentation and filtration. And better conditions are created for subsequent treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of printing and dyeing wastewater treatment, in particular to a pretreatment device for textile printing and dyeing water. Background Technique

[0002] Textile printing and dyeing water refers to the wastewater generated during the production process of textiles, especially in the processes of printing, dyeing, printing and finishing. The printing and dyeing wastewater contains a large amount of organic and inorganic substances, including organic substances such as dyes, starches, celluloses, lignins, detergents, and inorganic substances such as alkalis, sulfides, and various salts. In addition, the wastewater may also contain harmful substances such as heavy metals, surfactants, and dye auxiliaries. Therefore, the textile printing and dyeing wastewater needs to be treated before it can be discharged.

[0003] In the process of treating textile printing and dyeing wastewater, pretreatment is a very important link. Most of the existing publicly available pretreatment devices for textile printing and dyeing water only set up a filter screen before the formal treatment of the printing and dyeing water to filter out cotton, wool, chemical fibers and other textile products in the printing and dyeing water to prevent them from blocking the treatment equipment during the subsequent formal treatment. For example, a device for pretreating textile printing and dyeing water disclosed in Patent Application Publication No. CN113003849 A. The existing pretreatment equipment has incomplete pretreatment and does not pre-treat the suspended solids, large particles and oils in the wastewater, resulting in a greater burden on the subsequent treatment. Content of the Utility Model

[0004] The utility model provides a pretreatment device for textile printing and dyeing water, which has the advantage of more comprehensive pretreatment, so as to solve the problem that the existing publicly available pretreatment devices for textile printing and dyeing water have a small treatment range and are not comprehensive enough mentioned in the above background technology section.

[0005] To achieve the purpose of more comprehensive pretreatment, the utility model provides the following technical solution: A pretreatment device for textile printing and dyeing water, including a pretreatment tank, a coarse filter plate and a fine filter plate. Four legs are installed at the bottom of the pretreatment tank. A sedimentation tank, a filtration tank and an oil removal tank are arranged side by side in sequence in the pretreatment tank. A first connection port and a second connection port are respectively opened on the partition between the sedimentation tank and the filtration tank and between the filtration tank and the oil removal tank. Two pairs of limit plates are arranged side by side in the filtration tank. A socket is left between each pair of limit plates to facilitate the penetration of the coarse filter plate or the fine filter plate. The coarse filter plate and the fine filter plate are arranged one after the other in the filtration tank along the water flow direction. A top plate is installed above the oil removal tank. A hopper is installed on the top plate. The bottom outlet of the hopper faces the oil removal tank. A discharge valve is installed at the bottom of the hopper.

[0006] As a preferred technical solution of the present utility model, both the coarse filter screen plate and the fine filter screen plate include a filter screen frame, a filter screen, a cover plate, and a pull ring. The filter screen is installed in the middle of the filter screen frame, the cover plate is installed on the upper part of the filter screen frame, and the pull ring is installed on the cover plate.

[0007] As a preferred technical solution of the present utility model, a first sewage discharge pipe and a second sewage discharge pipe are installed at the bottom of the filter tank. The first sewage discharge pipe is communicated with the pool cavity in front of the coarse filter screen plate, and the second sewage discharge pipe is communicated with the pool cavity between the coarse filter screen plate and the fine filter screen plate.

[0008] As a preferred technical solution of the present utility model, the bottom of the sedimentation tank is designed to be inclined towards one side, and a sludge discharge pipe communicated with the sedimentation tank is installed on one side wall of the pretreatment tank.

[0009] As a preferred technical solution of the present utility model, a third sewage discharge pipe is installed at the bottom of the oil removal tank.

[0010] As a preferred technical solution of the present utility model, a water outlet communicated with the oil removal tank is arranged on the other side wall of the pretreatment tank.

[0011] Compared with the prior art, the present utility model provides a textile printing and dyeing wastewater pretreatment device, which has the following beneficial effects:

[0012] 1. For this textile printing and dyeing wastewater pretreatment device, by setting a sedimentation tank and a filter tank, the sedimentation tank can use the gravity to sink larger suspended solids and particles in the textile printing and dyeing wastewater to the bottom of the water. The filter tank is equipped with a filter screen plate, which can filter out textile products such as cotton, wool, and chemical fibers in the printing and dyeing wastewater. Through sedimentation and filtration, the turbidity and suspended solid content of the wastewater can be effectively reduced, creating better conditions for subsequent treatment.

[0013] 2. For this textile printing and dyeing wastewater pretreatment device, by setting an oil removal tank, the oil removal tank uses the oil removal chemical agent thrown in the hopper to chemically react with the oil in the wastewater to form precipitates or coagulants for oil removal. Through pre-oil removal, the difficulty of subsequent biochemical treatment and advanced treatment can be reduced, and the burden of subsequent treatment can be reduced. Description of the Drawings

[0014] Figure 1 is the front sectional view of the present utility model;

[0015] Figure 2 is the overall structural schematic diagram of the present utility model;

[0016] Figure 3 is the present utility model Figure 1 the structural composition diagram of the coarse filter screen plate or the fine filter screen plate in.

[0017] In the figure: 1. Pretreatment tank; 2. Legs; 3. Sedimentation tank; 4. Filter tank; 5. Oil removal tank; 6. First connection port; 7. Second connection port; 8. Limiting plate; 9. Coarse filter screen plate; 10. Fine filter screen plate; 11. Top plate; 12. Hopper; 13. Discharge valve; 14. Sludge discharge pipe; 15. First sewage discharge pipe; 16. Second sewage discharge pipe; 17. Third sewage discharge pipe; 18. Water outlet; 19. Filter screen frame; 20. Filter screen; 21. Cover plate; 22. Pull ring. Specific implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 3 , the present invention discloses a textile printing and dyeing water pretreatment device, including a pretreatment tank 1, a coarse filter screen plate 9 and a fine filter screen plate 10. Four legs 2 are installed at the bottom of the pretreatment tank 1. A sedimentation tank 3, a filter tank 4 and an oil removal tank 5 are arranged in parallel in sequence in the pretreatment tank 1. A first connection port 6 and a second connection port 7 are respectively opened on the partition between the sedimentation tank 3 and the filter tank 4 and between the filter tank 4 and the oil removal tank 5. Two pairs of limiting plates 8 are arranged in parallel in the filter tank 4. A socket for the coarse filter screen plate 9 or the fine filter screen plate 10 to penetrate is left between each pair of limiting plates 8. The coarse filter screen plate 9 and the fine filter screen plate 10 are arranged one after the other in the filter tank 4 along the water flow direction. A top plate 11 is installed above the oil removal tank 5. A hopper 12 is installed on the top plate 11. The bottom outlet of the hopper 12 faces the oil removal tank 5. A discharge valve 13 is installed at the bottom of the hopper 12.

[0020] Specifically, both the coarse filter screen plate 9 and the fine filter screen plate 10 include a filter screen frame 19, a filter screen 20, a cover plate 21 and a pull ring 22. A filter screen 20 is installed in the middle of the filter screen frame 19. A cover plate 21 is installed on the upper part of the filter screen frame 19. A pull ring 22 is installed on the cover plate 21.

[0021] In this implementation scheme, the coarse filter screen plate 9 and the fine filter screen plate 10 can achieve two-stage filtration of the wastewater, preventing the filtration pressure of a single filter screen plate from being too large and affecting the fluidity of the wastewater. The function of the pull ring 22 is to facilitate personnel to lift the filter screen plate upward, making the disassembly of the filter screen plate more convenient and facilitating personnel to regularly clean the sundries on the filter screen plate.

[0022] Specifically, a first sewage discharge pipe 15 and a second sewage discharge pipe 16 are installed at the bottom of the filtration tank 4. The first sewage discharge pipe 15 communicates with the pool cavity in front of the coarse filter plate 9, and the second sewage discharge pipe 16 communicates with the pool cavity between the coarse filter plate 9 and the fine filter plate 10.

[0023] In this implementation scheme, the arrangements of the first sewage discharge pipe 15 and the second sewage discharge pipe 16 can facilitate the regular removal of the intercepted debris in the filtration tank 4 by personnel, preventing the excessive debris from blocking the filter plate.

[0024] Specifically, the bottom of the sedimentation tank 3 is designed to be inclined towards one side, and a sludge discharge pipe 14 communicating with the sedimentation tank 3 is installed on one side wall of the pretreatment tank 1.

[0025] In this implementation scheme, the inclined design of the bottom of the tank can make the sediment discharge more complete.

[0026] Specifically, a third sewage discharge pipe 17 is installed at the bottom of the oil removal tank 5.

[0027] In this implementation scheme, the arrangement of the third sewage discharge pipe 17 is used to discharge the sediment or solidified matter in the oil removal tank 5 to the outside.

[0028] Specifically, a water outlet 18 communicating with the oil removal tank 5 is arranged on the other side wall of the pretreatment tank 1.

[0029] In this implementation scheme, the arrangement of the water outlet 18 can enable the wastewater after oil removal to be quickly discharged from the pretreatment tank 1, ensuring the smoothness of the pretreatment process.

[0030] It should be noted that in this implementation scheme, valves are installed on the sludge discharge pipe 14, the first sewage discharge pipe 15, the second sewage discharge pipe 16 and the third sewage discharge pipe 17 to control the on-off of the pipelines.

[0031] Working principle and usage process of the present utility model: When in use, textile printing and dyeing wastewater is first conveyed through a pipeline to the sedimentation tank 3. During the static settlement process in the sedimentation tank 3, larger suspended solids and particles in the wastewater gradually settle to the bottom under the action of gravity. Personnel can quickly discharge the sediment by opening the sludge discharge pipe 14. After sedimentation treatment, the wastewater enters the filtration tank 4 through the first connection port 6. Then, the wastewater successively passes through the coarse filter plate 9 and the fine filter plate 10 in the filtration tank 4 to filter out textile products such as cotton, wool, and chemical fibers. The filtered textile products such as cotton, wool, and chemical fibers are finally discharged together with a small amount of wastewater through the first sewage discharge pipe 15 and the second sewage discharge pipe 16. The filtered wastewater enters the oil removal tank 5 through the second connection port 7. At this time, the oil removal chemical agent contained in the hopper 12 is discharged by opening the discharge valve 13. The oil removal chemical agent (common chemical agents include polyaluminum chloride, polyferric sulfate, etc.) combines with the oil in the wastewater to undergo a chemical reaction, forming a precipitate or coagulum that settles to the bottom of the oil removal tank 5 and is finally discharged through the third sewage discharge pipe 17. The wastewater after oil removal is discharged through the water outlet 18 into the formal treatment equipment.

[0032] It should be noted that in this text, terms such as "including", "comprising", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including the said element.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A textile printing and dyeing water pretreatment device, comprising a pretreatment tank (1), a coarse filter plate (9) and a fine filter plate (10), characterized in that: Four legs (2) are installed at the bottom of the pretreatment tank (1). A sedimentation tank (3), a filtration tank (4), and an oil removal tank (5) are arranged in sequence side by side in the pretreatment tank (1). A first connection port (6) and a second connection port (7) are respectively opened on the partition between the sedimentation tank (3) and the filtration tank (4) and between the filtration tank (4) and the oil removal tank (5). Two pairs of limit plates (8) are arranged side by side in the filtration tank (4). A socket is left between each pair of the limit plates (8) for the coarse filter mesh plate (9) or the fine filter mesh plate (10) to penetrate. The coarse filter mesh plate (9) and the fine filter mesh plate (10) are arranged one after the other in the filtration tank (4) along the water flow direction. A top plate (11) is installed above the oil removal tank (5). A hopper (12) is installed on the top plate (11). The bottom outlet of the hopper (12) faces the oil removal tank (5). A discharge valve (13) is installed at the bottom of the hopper (12).

2. The textile printing and dyeing water pretreatment device according to claim 1, wherein: Both the coarse filter mesh plate (9) and the fine filter mesh plate (10) include a filter mesh frame (19), a filter mesh (20), a cover plate (21), and a pull ring (22). The filter mesh (20) is installed in the middle of the filter mesh frame (19). The cover plate (21) is installed on the upper part of the filter mesh frame (19). The pull ring (22) is installed on the cover plate (21).

3. The textile printing and dyeing water pretreatment device according to claim 1, wherein: A first sewage discharge pipe (15) and a second sewage discharge pipe (16) are installed at the bottom of the filtration tank (4). The first sewage discharge pipe (15) communicates with the chamber of the filtration tank (4) in front of the coarse filter mesh plate (9). The second sewage discharge pipe (16) communicates with the chamber of the filtration tank (4) between the coarse filter mesh plate (9) and the fine filter mesh plate (10).

4. A textile printing and dyeing water pretreatment device according to claim 1, characterized in that: The bottom of the sedimentation tank (3) is designed to be inclined towards one side. A sludge discharge pipe (14) communicating with the sedimentation tank (3) is installed on one side wall of the pretreatment tank (1).

5. The pretreatment device for textile printing and dyeing water according to claim 1, characterized in that: A third sewage discharge pipe (17) is installed at the bottom of the oil removal tank (5).

6. The pretreatment device for textile printing and dyeing water according to claim 1, characterized in that: An outlet (18) communicating with the oil removal tank (5) is arranged on the other side wall of the pretreatment tank (1).

Images