Precipitation device for textile printing and dyeing wastewater treatment and treatment method

Abstract

The invention relates to the technical field of sewage sedimentation tanks, in particular to a sedimentation device for textile printing and dyeing wastewater treatment and a treatment method.A long penetrating groove is formed in a fan-shaped plate in a penetrating mode, a double-layer filter screen is arranged in the long penetrating groove, and the end of the outer side of the fan-shaped plate is in lap joint with a stepped ring table; the device has the beneficial effects that the rotating separation assembly is designed, the separation assembly is utilized to realize the vertical layering of the sedimentation tank, and then the material pumping device is utilized to realize the pumping treatment of the lower-layer sediments, so that the operation is simple, the cost is low, the operation is convenient, the operation is convenient, and the practicability is high. In the treatment process, the control assembly is used for controlling the long penetrating groove, the strength and the sealing performance of layered supporting are improved, and the material pumping and cleaning quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of sewage sedimentation tanks, in particular to a sedimentation device and a treatment method for textile printing and dyeing wastewater treatment. Background Art

[0002] During the textile printing and dyeing process, a large amount of wastewater containing dyes will be generated. In order to prevent the dye wastewater from polluting and adhering to the discharge pipes, the wastewater needs to be precipitated and flocculants need to be added to concentrate and precipitate the free and suspended impurities.

[0003] Existing patent: CN218900941U A printing and dyeing wastewater sedimentation device discloses a printing and dyeing wastewater sedimentation device, including a sedimentation frame and a sealing cover, the upper end surface of the sedimentation frame is provided with a sealing cover, the upper end surface of the sealing cover is provided with a feed port, the inner side wall of the sedimentation frame is fixedly connected to a guide frame, the inner side wall of the guide frame is provided with a plurality of rotating rods, the outer walls of the plurality of rotating rods are fixedly connected to a water baffle, the top inner side wall of the sedimentation frame is fixedly connected to a guide plate, and the water outlet end of the guide plate is fixedly connected to the top outer wall of the sedimentation frame. In the present invention, the printing and dyeing wastewater is introduced through the provided feed port, the printing and dyeing wastewater falls on the upper surface of the guide plate, flows along the guide plate to the guide frame, and then falls onto the water baffle, so that the water baffle drives the rotating rod to rotate, thereby having a buffering effect on the water flow, preventing the water flow from being directly input into the sedimentation frame, causing the sediment at the bottom to float up, and improving the sedimentation effect of the sedimentation frame.

[0004] In the prior art, in order to clean the sedimentation tank, the upper clear liquid needs to be extracted and then the material is extracted for treatment. Such a cleaning process will seriously affect the efficiency of wastewater sedimentation treatment. At the same time, the cleaning is difficult and costly. Summary of the Invention

[0005] The object of the present invention is to provide a sedimentation device and a treatment method for treating textile printing and dyeing wastewater, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A sedimentation device for treating textile printing and dyeing wastewater comprises a sedimentation tank, an inner side wall of the sedimentation tank is provided with a stepped ring platform, a vertical pipe fixed by multiple groups of columns is provided in the middle of the sedimentation tank, a partition assembly is rotatably mounted on the vertical pipe, the partition assembly comprises four groups of fan-shaped plates rotatably mounted on the outer wall of the middle section of the vertical pipe, adjacent pairs of the fan-shaped plates are connected by fan-shaped elastic bands, a through-long groove is provided on the fan-shaped plate, a double-layer filter screen is provided in the through-long groove, the outer end of the fan-shaped plate is overlapped on the stepped ring platform, a control assembly for controlling the opening and closing of the through-long groove is provided on the fan-shaped plate, and a material extraction assembly for cleaning the lower end of the sedimentation tank is provided at the upper end of the vertical pipe.

[0007] Preferably, an outer support platform is provided on the outer wall of the middle section of the vertical pipe, and rotating seats distributed in a circular array and corresponding one-to-one with the fan-shaped plates are provided on the outer support platform, a sleeve rotatably mounted on the rotating seat is provided at one end of the fan-shaped plate, and an end plate mounted on the stepped ring platform is provided at the other end of the fan-shaped plate, annular sealing rings are provided on the outer support platform and the stepped ring platform, and sealing grooves cooperating with the sealing rings are provided on the end plate and the elastic band.

[0008] Preferably, a second winch is provided on the outer wall of the upper end of the riser, a first winch is provided at the upper end of the sedimentation tank, and a pair of ear seats are provided on the end plate, wherein one group of ear seats is connected to the first winch through a first pull rope, and the other group of ear seats is connected to the second winch through a second pull rope.

[0009] Preferably, the extraction assembly includes a decontamination pipe and a spiral conveying rod installed in the decontamination pipe, a stepped vertical groove is provided in the inner cavity of the vertical pipe, a plurality of groups of columns are provided at the lower end of the vertical pipe and fixed on the lower inner wall of the sedimentation tank, the decontamination pipe is vertically slidably inserted in the vertical groove, and a plurality of groups of telescopic rods connected to the outer wall of the decontamination pipe are provided at the upper end of the vertical pipe.

[0010] Preferably, a side port for discharging is provided on the side wall of the upper end of the vertical pipe, a motor for driving a spiral conveying rod is provided at the upper end of the decontamination pipe, the lower end of the spiral conveying rod extends to the lower end of the vertical pipe, the lower end of the decontamination pipe is pressed onto the stepped surface of the vertical groove, and a locking assembly is provided on the outer wall of the vertical pipe. The locking assembly can be inserted above the rotating seat under the squeezing of the decontamination pipe to limit the rotation angle of the fan plate.

[0011] Preferably, the locking assembly includes an outer rod and an inner block, a through transverse groove is provided on the side wall of the vertical pipe, an inner ring is provided on the middle inner wall of the through transverse groove, the outer rod and the inner block are respectively slidably inserted on both sides of the inner ring, and the inner and outer ports of the through transverse groove are provided with annular end covers, the outer rod and the inner block are fixedly connected, and a second spring is pressed between the inner block and the inner ring, the outer rod can extend to the upper end surface of the fan-shaped plate, the inner block extends into the vertical groove, and the end of the inner block is spherical, and the outer wall of the lower end port of the sewage removal pipe is set to an inclined cone.

[0012] Preferably, a pair of long piston blocks are inserted into the inner cavity of the sector plate located on both sides of the long slot, and an arc-shaped insertion rod and an insertion plate are respectively provided on the pair of long piston blocks. The insertion plate faces the long slot, and the arc-shaped insertion rod faces the elastic band.

[0013] Preferably, a crossbeam is provided in the middle of the long slot, the insert plate can be telescopically pressed on the side wall of the crossbeam, a plurality of groups of inner arc grooves are provided on the elastic band, the arc-shaped insert rod can be telescopically inserted in the inner arc groove, an upper frame is provided at the upper end of the gap between a pair of long piston blocks, a control component is installed on the upper frame, the control component is connected to the gap between the pair of long piston blocks through a hose, and the control component controls the sliding of the pair of long piston blocks through air pressure.

[0014] Preferably, the control component includes a folding tube, the lower end of the folding tube is provided with a lifting support rod that slides through the fan-shaped plate and rests on the inner wall of the lower end of the sedimentation tank, a first spring is pressed between the folding tube and the lifting support rod, and a two-way joint connecting the folding tube and the hose is provided on the upper frame.

[0015] A treatment method implemented according to the precipitation device for treating textile printing and dyeing wastewater, the treatment method comprising the following steps: Step 1: When the water is being stored and settled, the fan-shaped plate is rotated and retracted to the outside of the vertical pipe, so that the water flows into the sedimentation tank and settles by gravity and the added flocculant; Step 2: After the sediment accumulates, the hoisting equipment drives the fan-shaped plate to slowly unfold. During the unfolding process, the filter screen running through the long groove is used to filter the water flow, and at the same time, the water flow overflows to the upper end of the fan-shaped plate. When the fan-shaped plate extends to the stepped ring platform, the upper clear liquid and the lower sediment are separated; Step 3: At this time, use the control component to close the long groove to achieve complete separation of the upper and lower layers, and use the extraction component to extract and clean the sediment in the lower layer. The downward seepage at the connection position of the separation component can flush the inner wall of the lower layer to ensure the quality of cleaning.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Compared with the existing technology, the present invention designs a rotating partition component, which is used to realize the upper and lower stratification of the sedimentation tank, and then uses the extraction device to extract the lower layer of sediment. In the treatment project, the control component is used to control the long trough, improve the strength and sealing of the layer support, and ensure the quality of extraction and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A top view of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 for Figure 2 A magnified view of the structure at center A; Figure 4 for Figure 2 A magnified view of the structure at point B in the middle; Figure 5 This is a schematic diagram of the three-dimensional structure of the fan-shaped plate of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the arc-shaped plug rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the partition assembly of the present invention; Figure 9 It is a schematic structural diagram of the partition assembly of the present invention.

[0018] Figure: 1, sedimentation tank; 2, stepped ring platform; 3, riser; 4, sector plate; 5, end plate; 6, first winch; 7, first pull rope; 8, elastic band; 9, upper frame; 10, through-long slot; 11, filter screen; 12, hose; 13, rotating seat; 14, inner block; 15, ear seat; 16, motor; 17, side port; 18, second winch; 19, second pull rope; 20, telescopic rod; 21, spiral Conveying rod; 22. Decontamination pipe; 23. Column; 24. Lifting support rod; 25. Crossbeam; 26. Folding tube; 27. Two-way joint; 28. First spring; 29. ​​Through transverse groove; 30. External plug rod; 31. End cover; 32. Inner ring; 33. Second spring; 34. External support platform; 35. Sealing ring; 36. Inner arc groove; 37. Arc plug rod; 38. Insert plate; 39. Long piston block; 40. Casing. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 9 , the present invention provides a technical solution: A sedimentation device for treating textile printing and dyeing wastewater comprises a sedimentation tank 1, wherein a stepped ring platform 2 is provided on the inner side wall of the sedimentation tank 1, a vertical pipe 3 supported and fixed by multiple groups of columns 23 is provided in the middle of the sedimentation tank 1, a partition assembly is rotatably mounted on the vertical pipe 3, a second hoist 18 is provided on the outer wall of the upper end of the vertical pipe 3, a first hoist 6 is provided at the upper end of the sedimentation tank 1, and a pair of ear seats 15 are provided on the end plate 5, wherein one group of ear seats 15 is connected to the first hoist 6 via a first pull rope 7, and the other group of ear seats 15 is connected to the second hoist 18 via a second pull rope 19.

[0021] The rotation, expansion and storage of the partition assembly are achieved by setting a winch assembly.

[0022] The partition assembly includes four groups of sector plates 4 rotatably mounted on the outer wall of the middle section of the vertical pipe 3 , and adjacent pairs of sector plates 4 are connected by sector-shaped elastic bands 8 .

[0023] The elastic band 8 is provided to adapt to the extension during rotation and expansion of the sector plate 4 and the folding deformation during storage.

[0024] A through slot 10 is provided through the sector plate 4 , and a double-layer filter screen 11 is provided in the through slot 10 .

[0025] The filter screen 11 is provided to filter the water flowing upward along the long groove 10 to prevent the sediment in the lower layer from being lifted up.

[0026] The outer end of the sector plate 4 is overlapped on the stepped ring platform 2, and an outer support platform 34 is provided on the outer wall of the middle section of the riser 3. The outer support platform 34 is provided with rotating seats 13 distributed in a circumferential array and corresponding to the sector plate 4 one by one. One end of the sector plate 4 is provided with a sleeve 40 rotatably mounted on the rotating seat 13, and the other end of the sector plate 4 is provided with an end plate 5 mounted on the stepped ring platform 2. Annular sealing rings 35 are provided on the outer support platform 34 and the stepped ring platform 2, and sealing grooves cooperating with the sealing ring 35 are provided on the end plate 5 and the elastic band 8.

[0027] By setting up the stepped ring platform 2 and the outer support platform 34, stable support is achieved for both ends of the sector plate 4. The rotation installation of the sector plate 4 is achieved by utilizing the cooperation of the rotating seat 13 and the sleeve 40. The connection support position is sealed by the sealing ring 35 to reduce water seepage.

[0028] A control component for controlling the opening and closing of the long slot 10 is provided on the sector plate 4 , and a pumping component for cleaning the lower end of the sedimentation tank 1 is provided at the upper end of the riser 3 .

[0029] The impurity precipitation at the lower end of the sedimentation tank 1 is cleaned by using the extraction component.

[0030] Working principle: When water is stored and settled, the partition assembly is rotated and stored, so that the water flows smoothly into the sedimentation tank 1 for sedimentation.

[0031] When there are too many impurities at the lower end of the sedimentation tank 1 and they need to be cleaned, the fan-shaped plate 4 is driven to rotate so that the partition assembly slowly expands. During the expansion process, the water flows upward along the long groove 10. The filter screen 11 is provided to filter the water flowing upward along the long groove 10 to prevent the sediment impurities in the lower layer from being lifted up.

[0032] When the sedimentation tank 1 is layered using a partition assembly consisting of a fan-shaped plate 4 and an elastic band 8, the upper layer is the supernatant and the lower layer is the precipitated impurities, and then the impurities in the lower layer are extracted and cleaned using the extraction assembly, during the extraction process, due to the water pressure and the gap at the connection position, the upper water flow falls along the gap, but the falling water flow rate is less than the extraction speed, so it will not cause the problem of liquid level rising, and the falling water flow can flush the inner wall of the lower end of the sedimentation tank 1, thereby improving the cleaning efficiency.

[0033] Example 2: Based on Example 1, the material extraction component includes a decontamination pipe 22 and a spiral conveying rod 21 installed in the decontamination pipe 22. A stepped vertical groove is provided in the inner cavity of the standpipe 3, and a plurality of groups of columns 23 are provided at the lower end of the standpipe 3 to be fixed on the inner wall of the lower end of the sedimentation tank 1. The decontamination pipe 22 slides vertically and is inserted into the vertical groove. The upper end of the standpipe 3 is provided with a plurality of groups of telescopic rods 20 connected to the outer wall of the decontamination pipe 22; a side port 17 for discharging is provided on the side wall of the upper end of the standpipe 3, and a motor 16 for driving the spiral conveying rod 21 is provided at the upper end of the decontamination pipe 22. The lower end of the spiral conveying rod 21 extends to the lower end of the standpipe 3, and the lower end of the decontamination pipe 22 is pressed on the stepped surface of the vertical groove. A locking assembly is provided on the outer wall of the standpipe 3, which can be inserted above the rotating seat 13 under the extrusion of the decontamination pipe 22 to limit the rotation angle of the fan plate 4.

[0034] The motor 16 drives the spiral conveying rod 21 to rotate, thereby realizing the upward transportation and cleaning of the precipitated impurities at the lower end of the sedimentation tank 1. The telescopic rod 20 is used to adjust the height of the decontamination pipe 22, so that when not cleaning, the spiral conveying rod 21 is suspended in the air to avoid adhesion to the inner wall of the sedimentation tank 1 due to the adhesion of printing and dyeing impurities. Only when cleaning, the spiral conveying rod 21 is driven to descend and rotate to fit the lower inner wall of the sedimentation tank 1 for sufficient impurity transportation and cleaning.

[0035] The locking assembly includes an outer rod 30 and an inner block 14. A through transverse groove 29 is provided on the side wall of the vertical pipe 3, and an inner ring 32 is provided on the middle inner wall of the through transverse groove 29. The outer rod 30 and the inner block 14 are respectively slidably inserted on both sides of the inner ring 32. The inner and outer ports of the through transverse groove 29 are provided with annular end covers 31. The outer rod 30 and the inner block 14 are fixedly connected, and a second spring 33 is pressed between the inner block 14 and the inner ring 32. The outer rod 30 can extend to the upper end surface of the sector plate 4, and the inner block 14 extends into the vertical groove. The end of the inner block 14 is spherical, and the outer wall of the lower end port of the decontamination pipe 22 is set to an inclined conical surface.

[0036] By setting the locking assembly and cooperating with the lifting and lowering adjustment of the dirt removal pipe 22, the angle of the partition assembly is fixed. After the partition assembly is installed and unfolded, the height of the dirt removal pipe 22 is lowered so that the inclined conical surface at its end is pressed against the end of the inner block 14, thereby achieving lateral extrusion of the inner block 14. As the inner block 14 moves laterally, the second spring 33 is compressed, and the outer rod 30 extends outward and is inserted and pressed against the upper end of the fan plate 4, thereby preventing the fan plate 4 from shaking or deflecting upward.

[0037] Example 3: Based on Example 2, The fan-shaped plate 4 is located in the inner cavity on both sides of the long groove 10 and is plugged with a pair of long piston blocks 39. A pair of long piston blocks 39 are respectively provided with an arc-shaped plug rod 37 and a plug plate 38. The plug plate 38 is facing the long groove 10, and the arc plug rod 37 is facing the elastic band 8. A crossbeam 25 is provided in the middle of the long groove 10. The plug plate 38 can be telescopically pressed on the side wall of the crossbeam 25. The elastic band 8 is provided with multiple groups of inner arc grooves 36. The arc plug rod 37 can be telescopically inserted in the inner arc groove 36. The upper end of the gap between the pair of long piston blocks 39 is provided An upper frame 9 is provided, on which a control component is installed. The control component is connected to the gap between a pair of long piston blocks 39 through a hose 12, and the control component controls the sliding of the pair of long piston blocks 39 through air pressure; the control component includes a folding tube 26, and the lower end of the folding tube 26 is provided with a lifting support rod 24 that slides through the fan-shaped plate 4 and rests on the inner wall of the lower end of the sedimentation tank 1. A first spring 28 is pressed between the folding tube 26 and the lifting support rod 24, and a two-way joint 27 connecting the folding tube 26 and the hose 12 is provided on the upper frame 9.

[0038] During the rotation and expansion of the sector plate 4, the lifting support rod 24 is pressed downward on the bottom of the sedimentation tank 1, thereby compressing the first spring 28, squeezing the folding tube 26, and allowing the air flow to enter between the adjacent pair of long piston blocks 39, thereby extending the arc-shaped plug rod 37 and the plug plate 38. By plugging the plug plate 38, a seal is achieved throughout the long groove 10. By plugging the arc-shaped plug rod 37 into the inner arc groove 36, the strength of the elastic band 8 is improved to avoid excessive deformation due to water pressure.

[0039] A treatment method implemented by a sedimentation device for treating textile printing and dyeing wastewater, the treatment method comprising the following steps: Step 1: When the water is being stored and settled, the fan-shaped plate 4 is rotated and stored outside the vertical pipe 3, so that the water flows into the sedimentation tank 1 and settles by gravity and the added flocculating material; Step 2: After the sediment accumulates, the sector plate 4 is slowly unfolded by a winch. During the unfolding process, the water flow is filtered by the filter screen 11 passing through the long groove 10, and the water flow overflows to the upper end of the sector plate 4. When the sector plate 4 extends to the stepped ring platform 2, the upper clear liquid and the lower sediment are separated; Step 3: At this time, the control component is used to close the long groove 10 to achieve a complete separation of the upper and lower layers, and the extraction component is used to extract and clean the sediment in the lower layer. The downward seepage at the connection position of the separation component can flush the inner wall of the lower layer to ensure the quality of cleaning.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sedimentation device for treating textile printing and dyeing wastewater, comprising a sedimentation tank (1), wherein a stepped ring platform (2) is provided on the inner side wall of the sedimentation tank (1), and a vertical pipe (3) supported and fixed by multiple groups of columns (23) is provided in the middle of the sedimentation tank (1), characterized in that: A partition assembly is rotatably mounted on the vertical pipe (3), and the partition assembly includes four groups of fan-shaped plates (4) rotatably mounted on the outer wall of the middle section of the vertical pipe (3). Adjacent pairs of the fan-shaped plates (4) are connected by fan-shaped elastic bands (8). A through-long groove (10) is provided on the fan-shaped plates (4), and a double-layer filter screen (11) is provided in the through-long groove (10). The outer end of the fan-shaped plate (4) is overlapped on the stepped ring platform (2). A control assembly for controlling the opening and closing of the through-long groove (10) is provided on the fan-shaped plate (4). The upper end of the vertical pipe (3) is provided with a pumping assembly for cleaning the lower end of the sedimentation tank (1).

2. The precipitation device for treating textile printing and dyeing wastewater according to claim 1, characterized in that: An outer support platform (34) is provided on the outer wall of the middle section of the vertical pipe (3), and a rotating seat (13) distributed in a circumferential array and corresponding to the fan-shaped plate (4) is provided on the outer support platform (34), and a sleeve (40) rotatably mounted on the rotating seat (13) is provided at one end of the fan-shaped plate (4), and an end plate (5) mounted on the stepped ring platform (2) is provided at the other end of the fan-shaped plate (4). An annular sealing ring (35) is provided on both the outer support platform (34) and the stepped ring platform (2), and a sealing groove cooperating with the sealing ring (35) is provided on the end plate (5) and the elastic band (8).

3. The precipitation device for treating textile printing and dyeing wastewater according to claim 1, characterized in that: A second hoist (18) is provided on the outer wall of the upper end of the riser (3), a first hoist (6) is provided on the upper end of the sedimentation tank (1), and a pair of lugs (15) are provided on the end plate (5), wherein one set of lugs (15) is connected to the first hoist (6) via a first pull rope (7), and the other set of lugs (15) is connected to the second hoist (18) via a second pull rope (19).

4. The precipitation device for treating textile printing and dyeing wastewater according to claim 3, characterized in that: The pumping assembly comprises a decontamination pipe (22) and a spiral conveying rod (21) installed in the decontamination pipe (22); a stepped vertical groove is provided in the inner cavity of the vertical pipe (3); a plurality of vertical columns (23) are provided at the lower end of the vertical pipe (3) and are fixed on the inner wall of the lower end of the sedimentation tank (1); the decontamination pipe (22) is vertically slidably inserted in the vertical groove; and a plurality of telescopic rods (20) are provided at the upper end of the vertical pipe (3) and are connected to the outer wall of the decontamination pipe (22).

5. The precipitation device for treating textile printing and dyeing wastewater according to claim 4, characterized in that: A side port (17) for discharging is provided on the side wall of the upper end of the vertical pipe (3), a motor (16) for driving a spiral conveying rod (21) is provided on the upper end of the decontamination pipe (22), the lower end of the spiral conveying rod (21) extends to the lower end of the vertical pipe (3), the lower end of the decontamination pipe (22) is pressed onto the stepped surface of the vertical groove, and a locking assembly is provided on the outer wall of the vertical pipe (3). The locking assembly can be inserted above the rotating seat (13) under the squeezing of the decontamination pipe (22) to limit the rotation angle of the sector plate (4).

6. The precipitation device for treating textile printing and dyeing wastewater according to claim 5, characterized in that: The locking assembly includes an outer plug rod (30) and an inner block (14), a through transverse groove (29) is provided on the side wall of the vertical pipe (3), an inner ring (32) is provided on the middle inner wall of the through transverse groove (29), the outer plug rod (30) and the inner block (14) are respectively slidably plugged on both sides of the inner ring (32), and the inner and outer ports of the through transverse groove (29) are provided with annular end covers (31), the outer plug rod (30) and the inner block (14) are fixedly connected, and a second spring (33) is pressed between the inner block (14) and the inner ring (32), the outer plug rod (30) can extend to the upper end surface of the sector plate (4), the inner block (14) extends into the vertical groove, and the end of the inner block (14) is spherical, and the outer wall of the lower end port of the decontamination pipe (22) is set to an inclined conical surface.

7. The precipitation device for treating textile printing and dyeing wastewater according to claim 6, characterized in that: The fan-shaped plate (4) is located in the inner cavity on both sides of the through-long slot (10), and a pair of long piston blocks (39) are inserted therein. The pair of long piston blocks (39) are respectively provided with an arc-shaped insertion rod (37) and an insertion plate (38). The insertion plate (38) is opposite to the through-long slot (10), and the arc-shaped insertion rod (37) is opposite to the elastic band (8).

8. The precipitation device for treating textile printing and dyeing wastewater according to claim 7, characterized in that: A crossbeam (25) is provided in the middle of the long slot (10), the inserting plate (38) can be telescopically pressed on the side wall of the crossbeam (25), a plurality of groups of inner arc slots (36) are provided on the elastic band (8), the arc-shaped inserting rod (37) can be telescopically inserted in the inner arc slots (36), an upper frame (9) is provided at the upper end of the gap between the pair of long piston blocks (39), a control component is installed on the upper frame (9), the control component is connected to the gap between the pair of long piston blocks (39) through a hose (12), and the control component controls the sliding of the pair of long piston blocks (39) through air pressure.

9. The precipitation device for treating textile printing and dyeing wastewater according to claim 8, characterized in that: The control assembly includes a folding tube (26), the lower end of the folding tube (26) is provided with a lifting support rod (24) that slides through the fan-shaped plate (4) and rests on the inner wall of the lower end of the sedimentation tank (1), a first spring (28) is pressed between the folding tube (26) and the lifting support rod (24), and a two-way joint (27) connecting the folding tube (26) and the hose (12) is provided on the upper frame (9).

10. A treatment method implemented by the sedimentation device for treating textile printing and dyeing wastewater according to any one of claims 1 to 9, characterized in that: The processing method comprises the following steps: Step 1: When the water is being stored and settled, the fan-shaped plate (4) is rotated and stored outside the vertical pipe (3), so that the water flows into the sedimentation tank (1) and settles by gravity and the added flocculating material; Step 2: After the sediment accumulates, the fan-shaped plate (4) is slowly unfolded by using a winch device. During the unfolding process, the water flow is filtered by using a filter screen (11) that penetrates the long groove (10), and the water flow overflows to the upper end of the fan-shaped plate (4). When the fan-shaped plate (4) extends to the stepped ring platform (2), the upper clear liquid and the lower sediment are separated; Step 3: At this time, the control component is used to close the through long groove (10) to achieve a complete separation of the upper and lower layers, and the extraction component is used to extract and clean the sediment in the lower layer. The downward seepage at the connection position of the separation component can flush the inner wall of the lower layer to ensure the quality of cleaning.

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