A device for treating polyester decoloring wastewater

Abstract

The present application belongs to wastewater treatment technical field, specifically speaking, it is polyester decoloring wastewater treatment device, including coarse filter box, cylinder filter screen, flow director and inner sealing part, the flow director is arranged in the upper portion of the inner chamber of coarse filter box, the cylinder filter screen is sleeved in the outside of flow director, the inner sealing part is arranged at the axis of the inner wall of coarse filter box, the coarse filter box includes container shell, plug-in tube, butt joint plug cover and traction handle.The device removes larger solid particle impurities in wastewater through two-stage filtering work, since the straight-through connecting pipe is driven to rotate by centrifugal rotating machine when it sprays wastewater outward through its jet flow cutting notch, so the wastewater sprayed by straight-through connecting pipe can be more evenly covered on the inner wall of plug-in net cylinder, thereby more efficiently utilizing each filtering port, improving the utilization rate of plug-in net cylinder, avoiding the problem of rapid plugging of filtering ports at the bottom of plug-in net cylinder due to accumulation of a large amount of solid impurities, leading to the problem of greatly reduced filtering capacity and work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a polyester decolorization wastewater treatment device. Background Technology

[0002] During the production and processing of polyester, a large amount of waste fabric is generated. In order to reduce waste and achieve rational use of resources, the waste fabric needs to be processed and reused. The processing of waste fabric mainly includes decolorization and washing processes. This process consumes a lot of water and generates corresponding polyester decolorization wastewater. In addition to water, its main components include pigments, glycerol, oleic acid glycerides and salts. Direct discharge will put a great burden on the environment and it needs to be treated.

[0003] An existing polyester decolorization wastewater treatment device (publication number CN210559871U) removes residues, pigments, and salts from wastewater through dilution, coarse filtration, fine filtration, and distillation, and separates and recovers water, glycerol, and oleic acid glycerides from the wastewater. However, when the wastewater enters the coarse filter tank, it passes through the first and second filter screens in sequence for coarse filtration to remove solid residues mixed in the wastewater. This causes the upper and lower filter screens to easily become clogged, resulting in a significant decrease in the filtration capacity. Furthermore, subsequent filter screen replacement requires disassembly, separate cleaning, repair, and replacement of related components, making the operation quite cumbersome. Therefore, improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a polyester decolorization wastewater treatment device, comprising a coarse filter box, a cylindrical filter screen, a flow guide, and an inner sealing component. The flow guide is located in the upper part of the inner cavity of the coarse filter box, the cylindrical filter screen is sleeved on the outside of the flow guide, and the inner sealing component is located at the axial center of the inner wall of the coarse filter box. The coarse filter box includes a container shell, a connector tube, a docking cover, and a towing handle. The plug tubes are symmetrically arranged on both sides of the container shell cavity through slots. The outer surface of the left plug tube is slidably connected to the left side of the container shell cavity through the slot, and the outer surface of the right plug tube is fixedly connected to the right side of the container shell cavity through the slot. Both ends of the traction handle are plugged into the outer surface of the left plug tube. The inner cavity of the docking cover is evenly provided with docking slots, and the outer surface of the docking cover is rotatably connected to the inner wall of the plug-in cylinder. The drainage device includes a straight connecting pipe, a centrifugal rotor, and a compression end sleeve; The inner cavity of the straight connecting pipe is uniformly provided with spray grooves. An extended outer ring is sleeved on the left side of the outer surface of the straight connecting pipe. The left end of the compression end sleeve is inserted into the right side of the outer surface of the extended outer ring. The right end of the compression end sleeve is inserted into the outer surface of the left side of the connecting cover. The centrifugal rotor seals the right end of the straight connecting pipe and drives the straight connecting pipe to rotate centrifugally. The wastewater entering the straight connecting pipe is sprayed into the external cylindrical filter screen through the spray grooves. The left end of the centrifugal rotor shaft is inserted into the right end of the straight connecting pipe. The outer surface of the centrifugal rotor housing is sleeved with the inner wall of the right-side insertion cylinder. After pulling the left-side insertion cylinder open by the traction handle, the left end of the cylindrical filter screen is inserted into the docking slot of the left-side docking cover, and the right end of the cylindrical filter screen is inserted into the docking slot of the right-side docking cover. Release the traction handle, and the compression end sleeve pushes the left-side insertion cylinder back to its original position, so that the cylindrical filter screen is sleeved on the outside of the straight connecting pipe.

[0005] Furthermore, the coarse filter box also includes: A rotating box cover is symmetrically arranged on the front and rear sides of the inner wall of the container shell, and the outer surface of the rotating box cover is rotatably connected to the inner wall of the container shell through a rotating shaft. A snap-on top cover is inserted into the top of the container shell at its bottom. A drain pipe, the left end of which is inserted into the right side of the container shell cavity.

[0006] Furthermore, the cylindrical filter screen includes: A plug-in mesh tube, wherein filter openings are evenly distributed in the inner cavity of the plug-in mesh tube; The extension rods are symmetrically inserted into the left and right ends of the insertion screen cylinder. The side of the outer surface of the extension rod away from the insertion screen cylinder is inserted into the inner cavity of the insertion cover through the docking slot. Open the rotating box cover and pull the traction handle to the left to remove the entire cylindrical filter screen for replacement.

[0007] Furthermore, it also includes: A diffusion partition, wherein the diffusion partition is disposed inside the inner sealing component; The secondary filter is located on the lower part of the inner wall of the container.

[0008] Furthermore, the inner sealing component includes: A deflection controller, the left and right ends of which are inserted into the inner wall of the container shell; A rotary shaft is symmetrically arranged on the upper and lower sides of the inner cavity of the deflection controller, and the inner cavity of the deflection controller is rotatably connected to the axis of the inner wall of the rotary shaft through a rotating motor. The docking baffle is inserted into the outer surface of the rotating shaft. There are two inner sealing components. The docking baffles on the front and rear sides can be spliced ​​into a cylindrical shell of a closed cylindrical filter screen to ensure that wastewater can flow from top to bottom in the interlayer of the inner sealing components on both sides. A return spring, the upper and lower ends of which are respectively inserted into the outer surfaces of the upper and lower side abutment plates.

[0009] Furthermore, the diffusion partition includes: The inner filling plate has its upper outer surface pressed against the outer surface of the deflection controller, and both sides of the inner filling plate are inserted into the inner wall of the container shell. Vertical nozzles are evenly distributed at the center of the inner cavity of the filling inner plate, and oblique spray grooves are evenly distributed on both sides of the inner cavity of the filling inner plate. Wastewater flowing from top to bottom will drip relatively evenly onto the filter plate below through the vertical nozzles and oblique spray grooves of the filling inner plate.

[0010] Furthermore, the secondary filter includes: A filter plate, wherein filter screen openings are uniformly provided in the inner cavity of the filter plate; The auxiliary rollers are symmetrically arranged on the front and rear sides of the outer surface of the filter plate, and the outer surface of the auxiliary rollers is rotatably connected to the outer surface of the filter plate. The outer surface of the auxiliary rollers is pressed against the inner wall of the lower connecting baffle.

[0011] Furthermore, the secondary filter also includes: An external rotating machine, wherein the outer surface of the external rotating machine is inserted into the lower part of the outer surface of the container shell; The insertable rotating core has its left end inserted into the shaft of the inner cavity of the external rotating machine, and its right end extends into the interior of the container shell. A guide plate is inserted into the right side of the outer surface of the insertable rotating core, and the outer surface of the filter plate is inserted into the inner wall of the guide plate.

[0012] The beneficial effects of this invention are as follows: 1. This device removes larger solid particles from wastewater through a two-stage filtration process. As the wastewater is sprayed outward through the jet groove of the straight connecting pipe, it is rotated by a centrifugal motor. Therefore, the wastewater sprayed from the straight connecting pipe can cover the inner wall of the insert screen cylinder more evenly, thereby making more efficient use of each filter port, improving the utilization rate of the insert screen cylinder, and avoiding the problem of rapid blockage of the filter port at the bottom of the insert screen cylinder due to the accumulation of a large amount of solid impurities, which would lead to a significant decrease in the filtration volume and affect the working efficiency.

[0013] 2. The plug-in mesh cylinder is installed inside the container shell through the extension rods at both ends. This not only facilitates replacement and simplifies operation, but also provides external protection with a closed docking baffle. This prevents wastewater from splashing onto the inner wall of the container shell through the filter port of the plug-in mesh cylinder, thus avoiding contamination of the container shell. It also blocks the odor generated by the wastewater and protects the health and safety of the operators.

[0014] 3. Wastewater flowing from top to bottom is diverted by the diffusion baffle, spreading more evenly to the upper surface of the filter plate below, thereby improving the utilization rate of the filter plate. At the same time, it avoids the problem of wastewater concentrating through a certain part of the filter plate, causing the filter port of the filter plate to be quickly blocked and affecting the filtration work. The wastewater is concentrated in the cylinder connected to the bottom connecting baffle, so the wastewater will never come into contact with the inner wall of the container shell, thus avoiding the problem of easy corrosion of the inner wall of the container shell due to water contact.

[0015] 4. Since the main solid impurities in the wastewater have been filtered by the insert screen, and the wastewater is sprayed more evenly onto the surface of the filter plate below through the diversion effect of the diffuser, the filter plate has a relatively long service life. The external rotating machine can drive the filter plate to slide back and forth at a certain angle against the closed docking baffle by reciprocating twisting of the insert rotating core, thereby throwing the wastewater above to the lower part and accelerating the filtration of wastewater. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the container shell of the present invention; Figure 4 This is a cross-sectional view of the straight-through connecting pipe of the present invention; Figure 5 This is a cross-sectional view of the plug-in mesh tube of the present invention; Figure 6 This is a schematic diagram of the structure of the inner sealing component of the present invention; Figure 7 This is a cross-sectional view of the inner filling plate of the present invention; Figure 8 This is a schematic diagram of the structure of the secondary filter of the present invention.

[0017] In the diagram: 1. Coarse filter box; 2. Cylindrical filter screen; 3. Drainage device; 4. Inner sealing component; 5. Secondary filter; 6. Diffusion baffle; 11. Container shell; 12. Rotating box cover; 13. Insert tube; 14. Docking cover; 15. Traction handle; 16. Drainage pipe; 17. Snap-on top cover; 31. Straight connecting pipe; 32. Extended outer ring; 33. Compression end sleeve; 34. Centrifugal rotor; 21. Insert screen cylinder; 22. Filter port; 23. Extended insert rod; 41. Deflection controller; 42. Rotary shaft; 43. Docking baffle; 44. Return spring; 61. Inner filling plate; 62. Vertical nozzle; 63. Angled spray channel; 51. Filter plate; 52. Auxiliary roller; 53. External rotor; 54. Insert rotating core; 55. Guide plate. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example 1, please refer to Figures 1-5 This invention provides a technical solution: a polyester decolorization wastewater treatment device, comprising a coarse filter box 1, a cylindrical filter screen 2, a flow guide 3, and an inner sealing component 4. The flow guide 3 is disposed in the upper part of the inner cavity of the coarse filter box 1, the cylindrical filter screen 2 is sleeved on the outside of the flow guide 3, and the inner sealing component 4 is disposed at the axial center of the inner wall of the coarse filter box 1. The coarse filter box 1 includes a container shell 11, a connector 13, a docking cover 14, and a towing handle 15. The plug tubes 13 are symmetrically arranged on both sides of the inner cavity of the container shell 11 through slots. The outer surface of the left plug tube 13 is slidably connected to the left side of the inner cavity of the container shell 11 through the slot, and the outer surface of the right plug tube 13 is fixedly connected to the right side of the inner cavity of the container shell 11 through the slot. Both ends of the traction handle 15 are plugged into the outer surface of the left plug tube 13. The inner cavity of the docking cover 14 is evenly provided with docking slots, and the outer surface of the docking cover 14 is rotatably connected to the inner wall of the insertion cylinder 13. The drain device 3 includes a straight connecting pipe 31, a centrifugal rotor 34, and a compression end sleeve 33; The inner cavity of the straight connecting pipe 31 is uniformly provided with spray grooves. An extended outer ring 32 is sleeved on the left side of the outer surface of the straight connecting pipe 31. The left end of the compression end sleeve 33 is inserted into the right side of the outer surface of the extended outer ring 32. The right end of the compression end sleeve 33 is inserted into the outer surface of the left side docking cover 14. The centrifugal rotor 34 blocks the right end of the straight connecting pipe 31 and drives the straight connecting pipe 31 to rotate centrifugally. The wastewater entering the straight connecting pipe 31 is sprayed into the external cylindrical filter screen 2 through the spray grooves. The left end of the centrifugal rotor 34 shaft is inserted into the right end of the straight connecting pipe 31. The outer surface of the centrifugal rotor 34 housing is sleeved with the inner wall of the right side insertion cylinder 13. After pulling open the left end insertion cylinder 13 by the traction handle 15, the left end of the cylindrical filter screen 2 is inserted into the docking slot of the left side docking cover 14, and the right end of the cylindrical filter screen 2 is inserted into the docking slot of the right side docking cover 14. After releasing the traction handle 15, the compression end sleeve 33 pushes the left side insertion cylinder 13 back to its original position, and the cylindrical filter screen 2 is sleeved on the outside of the straight connecting pipe 31.

[0020] The coarse filter box 1 also includes: The rotating box cover 12 is symmetrically arranged on the front and rear sides of the inner wall of the container shell 11, and the outer surface of the rotating box cover 12 is rotatably connected to the inner wall of the container shell 11 through a rotating shaft. The top cover 17 is fastened, and the bottom of the top cover 17 is inserted into the top of the container shell 11; The drain pipe 16 is inserted into the right side of the inner cavity of the container shell 11 at its left end.

[0021] The cylindrical filter screen 2 includes: Insertable mesh tube 21, wherein filter openings 22 are evenly provided in the inner cavity of the insertable mesh tube 21; The extension rod 23 is symmetrically inserted into the left and right ends of the insertion screen cylinder 21. The side of the outer surface of the extension rod 23 away from the insertion screen cylinder 21 is inserted into the inner cavity of the insertion cover 14 through the docking slot. Open the rotating box cover 12 and pull the traction handle 15 to the left to remove the entire cylindrical filter screen 2 and then replace it.

[0022] The device is connected to the wastewater discharge component, and a fine filter component for treating wastewater is connected to the drain pipe 16 at the bottom. Then, the wastewater is pressurized and injected into the device from the left end of the straight connecting pipe 31. After passing through the primary filtration of the cylindrical filter screen 2 and the secondary filtration of the filter plate 51, the coarse solid impurities in the wastewater are separated from the wastewater.

[0023] After the wastewater enters the middle of the straight connecting pipe 31, it will be sprayed outward through its spray groove. At this time, the straight connecting pipe 31 will be driven by the centrifugal rotor 34 at the right end to perform high-speed centrifugal rotation, so that the wastewater sprayed from the spray groove is evenly sprinkled on the inner wall of the externally sleeved plug-in mesh cylinder 21. The wastewater drips down after passing through the filter port 22 of the plug-in mesh cylinder 21.

[0024] Since the insert screen cylinder 21 mainly filters larger solid impurities in the wastewater, due to gravity, the solids mainly settle in the lower part of the insert screen cylinder 21. At this time, the rotating box cover 12 can be opened, and then the inner sealing component 4 can lift the upper docking baffle 43 by rotating the upper rotating shaft 42, so that the insert screen cylinder 21 is exposed. The operator can rotate the insert screen cylinder 21 to rotate half a turn. At this time, the lower part of the insert screen cylinder 21 has a stronger filtration capacity and can continue to perform filtration work.

[0025] When the plug-in mesh cylinder 21 needs to be replaced, lift the upper docking baffle 43, and then hold the left-side traction handle 15 to pull the left-side plug-in cylinder 13 to the left. At this time, the left-side plug-in cylinder 13 slides out from inside the container shell 11 and squeezes the compression end sleeve 33. At this time, the extension rod 23 at the left end of the plug-in mesh cylinder 21 is pulled out from the left-side docking cover 14. After the old plug-in mesh cylinder 21 loses its fixing effect, it can be easily removed by the operator. Then replace it with a new plug-in mesh cylinder 21. After the extension rods 23 at both ends of the plug-in mesh cylinder 21 are inserted into the docking covers 14 on both sides, release the traction handle 15. At this time, the compression end sleeve 33 springs back and pushes the left-side plug-in cylinder 13 back to its original position, completing the replacement of the plug-in mesh cylinder 21.

[0026] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, it further includes: A diffusion partition 6 is disposed inside the inner sealing component 4; The secondary filter 5 is located on the lower part of the inner wall of the container shell 11.

[0027] The inner sealing component 4 includes: Deflection controller 41, both its left and right ends are plugged into the inner wall of container shell 11; The rotary shaft 42 is symmetrically arranged on the upper and lower sides of the inner cavity of the deflection controller 41, and the inner cavity of the deflection controller 41 is rotatably connected to the axis of the inner wall of the rotary shaft 42 through a rotating motor. The docking baffle 43 is inserted into the outer surface of the rotating shaft 42. There are two inner sealing components 4. The docking baffles 43 on the front and rear sides can be spliced ​​to form a cylindrical shell of the closed cylindrical filter screen 2, ensuring that the wastewater can flow from top to bottom in the interlayer of the inner sealing components 4 on both sides. The upper and lower ends of the return spring 44 are respectively inserted into the outer surfaces of the upper and lower mating baffles 43.

[0028] The diffusion partition 6 includes: The inner filling plate 61 is filled, and the upper part of the outer surface of the inner filling plate 61 is pressed against the outer surface of the deflection controller 41. Both the left and right sides of the inner filling plate 61 are inserted into the inner wall of the container shell 11. Vertical nozzles 62 are evenly provided at the center of the inner cavity of the filling inner plate 61, and oblique spray grooves 63 are evenly provided on both sides of the inner cavity of the filling inner plate 61. Wastewater flowing from top to bottom will drip relatively evenly onto the filter plate 51 below through the vertical nozzles 62 and oblique spray grooves 63 of the filling inner plate 61.

[0029] The secondary filter 5 includes: The filter plate 51 has filter screen openings evenly distributed in its inner cavity; The auxiliary roller 52 is symmetrically arranged on the front and rear sides of the outer surface of the filter plate 51, and the outer surface of the auxiliary roller 52 is rotatably connected to the outer surface of the filter plate 51. The outer surface of the auxiliary roller 52 is pressed against the inner wall of the lower connecting baffle 43.

[0030] The secondary filter 5 also includes: An external rotating mechanism 53, the outer surface of which is inserted into the lower part of the outer surface of the container shell 11; The insert rotating core 54 is inserted at its left end into the shaft of the inner cavity of the external rotating machine 53, and at its right end into the interior of the container shell 11. A guide plate 55 is inserted into the right side of the outer surface of the insert rotating core 54, and the outer surface of the filter plate 51 is inserted into the inner wall of the guide plate 55.

[0031] During wastewater filtration, the inner sealing components 4 on both the front and rear sides interlock with their connecting baffles 43 to form a cylindrical structure. The upper cylindrical structure completely surrounds the outer side of the insert mesh cylinder 21, thereby blocking the wastewater from passing through the filter port 22 of the insert mesh cylinder 21. This allows the wastewater to flow from top to bottom along the inner wall of the inner sealing component 4, preventing the wastewater from splashing onto the inner wall of the container shell 11 through the filter port 22 of the insert mesh cylinder 21 and causing the container shell to be contaminated by wastewater. After the wastewater undergoes primary filtration by the cylindrical filter screen 2 and secondary filtration by the filter plate 51, it will accumulate in the cylinder formed by the lower connecting baffles 43, waiting to be drained away by the drain pipe 16.

[0032] When the wastewater flows from top to bottom along the inner wall of the inner sealing component 4 through the plug-in mesh cylinder 21, it enters the slot at the top of the filling inner plate 61. Then, through the diversion effect of the vertical nozzle 62 and the oblique spray groove 63 of the filling inner plate 61, it is sprayed more evenly on the upper surface of the filter plate 51 below, realizing secondary filtration.

[0033] Since the main solid impurities in the wastewater have been filtered by the insert screen cylinder 21, and the wastewater is sprayed relatively evenly onto the upper surface of the filter plate 51 below through the diversion effect of the diffusion baffle 6, the filter plate 51 has a relatively long service life. When replacing the filter plate 51, the lower closed docking baffle 43 is opened by the deflection controller 41, and the filter plate 51 is pulled out from the inside of the guide plate 55 for replacement. The external rotating machine 53 can drive the filter plate 51 to slide back and forth against the closed docking baffle 43 at a certain angle by reciprocatingly twisting the insert rotating core 54, thereby throwing the wastewater above to the lower part and accelerating the filtration of wastewater.

[0034] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A polyester decolorization wastewater treatment device, comprising a coarse filter box (1), a cylindrical filter screen (2), a flow guide (3) and an inner sealing component (4), wherein the flow guide (3) is disposed at the upper part of the inner cavity of the coarse filter box (1), the cylindrical filter screen (2) is sleeved on the outside of the flow guide (3), and the inner sealing component (4) is disposed at the axial center of the inner wall of the coarse filter box (1); Its features are: The coarse filter box (1) includes a container shell (11), a plug-in tube (13), a docking plug cover (14), and a towing handle (15). The plug tubes (13) are symmetrically arranged on both sides of the inner cavity of the container shell (11) through slots. The outer surface of the left plug tube (13) is slidably connected to the left side of the inner cavity of the container shell (11) through the slot, and the outer surface of the right plug tube (13) is fixedly connected to the right side of the inner cavity of the container shell (11) through the slot. Both ends of the traction handle (15) are plugged into the outer surface of the left plug tube (13). The inner cavity of the docking cover (14) is uniformly provided with docking slots, and the outer surface of the docking cover (14) is rotatably connected to the inner wall of the plug tube (13). The drain device (3) includes a straight connecting pipe (31), a centrifugal rotor (34), and a compression end sleeve (33). The inner cavity of the straight connecting pipe (31) is uniformly provided with jet flow cutouts. An extended outer ring (32) is sleeved on the left side of the outer surface of the straight connecting pipe (31). The left end of the compression end sleeve (33) is inserted into the right side of the outer surface of the extended outer ring (32). The right end of the compression end sleeve (33) is inserted into the outer surface of the left side docking cover (14). The left end of the centrifugal rotor (34) shaft is inserted into the right end of the straight connecting pipe (31). The outer surface of the centrifugal rotor (34) housing is sleeved with the inner wall of the right side insertion cylinder (13). After pulling open the left end insertion cylinder (13) by the traction handle (15), the left end of the cylindrical filter (2) is inserted into the docking slot of the left side docking cover (14), and the right end of the cylindrical filter (2) is inserted into the docking slot of the right side docking cover (14). After releasing the traction handle (15), the compression end sleeve (33) pushes the left side insertion cylinder (13) back to its original position, and the cylindrical filter (2) is sleeved on the outside of the straight connecting pipe (31).

2. The polyester decolorization wastewater treatment device according to claim 1, characterized in that: The coarse filter box (1) also includes: Rotating box cover (12) is symmetrically arranged on the front and rear sides of the inner wall of the container shell (11), and the outer surface of the rotating box cover (12) is rotatably connected to the inner wall of the container shell (11) through a rotating shaft; The top cover (17) is fastened, and the bottom of the top cover (17) is inserted into the top of the container shell (11); The left end of the drain pipe (16) is inserted into the right side of the inner cavity of the container shell (11).

3. The polyester decolorization wastewater treatment device according to claim 2, characterized in that: The cylindrical filter screen (2) includes: Insert mesh tube (21), the inner cavity of which is uniformly provided with filter ports (22); The extension rod (23) is symmetrically inserted into the left and right ends of the insertion mesh tube (21), and the side of the outer surface of the extension rod (23) away from the insertion mesh tube (21) is inserted into the inner cavity of the insertion cover (14) through the insertion slot.

4. The polyester decolorization wastewater treatment device according to claim 1, characterized in that: Also includes: A diffusion partition (6) is disposed inside the inner sealing component (4); The secondary filter (5) is located on the lower part of the inner wall of the container shell (11).

5. The polyester decolorization wastewater treatment device according to claim 4, characterized in that: The inner sealing component (4) includes: A deflection controller (41) is inserted into the inner wall of the container shell (11) at both its left and right ends. Rotary shaft (42) is symmetrically arranged on the upper and lower sides of the inner cavity of the deflection controller (41), and the inner cavity of the deflection controller (41) is rotatably connected to the axis of the inner wall of the rotary shaft (42) through a rotating motor; A docking baffle (43) is inserted into the outer surface of the rotating shaft (42); The upper and lower ends of the return spring (44) are respectively inserted into the outer surfaces of the upper and lower side connecting baffles (43).

6. The polyester decolorization wastewater treatment device according to claim 5, characterized in that: The diffusion partition (6) includes: The inner filling plate (61) is filled, and the upper part of the outer surface of the inner filling plate (61) is pressed against the outer surface of the deflection controller (41). The left and right sides of the inner filling plate (61) are inserted into the inner wall of the container shell (11). Vertical nozzles (62) are evenly provided at the center of the inner cavity of the filling inner plate (61), and oblique spray grooves (63) are evenly provided on both sides of the inner cavity of the filling inner plate (61).

7. The polyester decolorization wastewater treatment device according to claim 6, characterized in that: The secondary filter (5) includes: The filter plate (51) has filter screen openings evenly distributed in its inner cavity. The auxiliary roller (52) is symmetrically arranged on the front and rear sides of the outer surface of the filter plate (51), and the outer surface of the auxiliary roller (52) is rotatably connected to the outer surface of the filter plate (51). The outer surface of the auxiliary roller (52) is pressed against the inner wall of the lower connecting baffle (43).

8. The polyester decolorization wastewater treatment device according to claim 7, characterized in that: The secondary filter (5) also includes: An external rotating machine (53) is inserted into the lower part of the outer surface of the container shell (11); The insert rotating core (54) is inserted into the shaft of the inner cavity of the external rotating machine (53) at its left end, and the right end of the insert rotating core (54) extends into the interior of the container shell (11). A guide plate (55) is inserted into the right side of the outer surface of the insert rotating core (54), and the outer surface of the filter plate (51) is inserted into the inner wall of the guide plate (55).

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