Textile wastewater multistage treatment device and treatment process

Abstract

The application discloses a kind of textile sewage multistage processing device and processing technology, belong to sewage treatment technical field, the application includes vertically placed processing cylinder, the upper end of processing cylinder is equipped with drive assembly, and drive assembly output end is equipped with the stirring rod of hollow structure;The inside of processing cylinder is fixedly installed with the collecting seat of annular structure, and the inside of collecting seat is elastically lifted and installed with primary filter screen, and primary filter screen and stirring rod are connected with key, simultaneously, the inside of lower part of processing cylinder is fixedly installed with baffle, and electromagnetic valve is installed in the middle position of baffle, and the elastic cylinder that can be elastically twisted is fixedly connected between primary filter screen and baffle.The textile sewage multistage processing device and processing technology can carry out multistage effective filtration to sewage, and can carry out efficient backflushing, cleaning to filter screen, while realizing the automatic addition and efficient mixing of flocculating agent, ensure processing efficiency and purification effect.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a multi-stage treatment device and process for textile wastewater. Background Technology

[0002] The textile processing process generates a large amount of wastewater. In order to avoid environmental pollution, textile wastewater needs to be treated and purified in multiple stages. However, the existing multi-stage textile wastewater treatment devices still have some shortcomings in use.

[0003] The prior art (Chinese patent application number: 202311276980.3, application date: 2023-10-07) discloses a textile wastewater treatment device, including a flocculation box. The top of the flocculation box has an inlet pipe, and a first filter plate is fixed on the inner wall of the top of the flocculation box. A filter box is provided on one side of the flocculation box, and a sterilization and disinfection box is provided at the other end of the filter box. Connecting pipes are fixed at both ends of the filter box. Compared with the prior art, four partitions divide the second filter screen into four equal parts. The through holes always correspond to one-quarter of the filter screen. The remaining three-quarters of the filter screen are cleaned at the front and rear ends of the filter screen through the cleaning component and the flushing component while the wastewater is being treated and filtered, which accelerates the removal of flocculation and the cleaning of the filter screen. At the same time, the cleaned flocculation and wastewater are recycled into the water circulation tank, which is convenient for the flushing component to reuse. This allows the device to perform efficient cleaning and unclogging measures on the filter screen without stopping the operation, avoiding the inconvenience of disassembling the filter screen.

[0004] Prior art (Chinese patent application number: 202321591719.8, application date: 2023-06-21) discloses a sewage treatment mechanism with multi-stage filtration function, including a treatment tank. The treatment tank has an internal cleaning mechanism and a liquid inlet mechanism on its left side. A guide frame is fixed to the top wall of the inner cavity of the treatment tank. The cleaning mechanism includes a box body fixed to the right side of the treatment tank. A screw is rotatably connected to the right side wall of the inner cavity of the box body via a bearing. A movable sleeve is threaded to the outer side of the screw. A movable plate is fixed to the left side of the movable sleeve, and multiple locking rods are fixed to the left side of the movable plate. This sewage treatment mechanism with multi-stage filtration function, by rotating a rocker arm, causes the screw to rotate, causing the movable plate to move horizontally left and right. When the movable plate moves horizontally to the right, the multiple locking rods disengage from their respective locking slots, allowing the tank door to be opened and multiple treatment boxes to be pulled out of the treatment tank for impurity treatment, thus facilitating impurity treatment.

[0005] While existing multi-stage textile wastewater treatment devices can achieve multi-stage filtration during use, they are inconvenient to automatically clean the filter screens, and the mixing efficiency of the agents is low during the subsequent flocculation operation, which reduces the flocculation treatment effect and has certain defects. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-stage treatment device and process for textile wastewater, in order to solve the problems mentioned in the background art, such as the inconvenience of automatic cleaning of the filter screen in current multi-stage treatment devices for textile wastewater on the market, and the low efficiency of the mixing of agents in the subsequent flocculation operation, which reduces the flocculation treatment effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage treatment device and process for textile wastewater, comprising a vertically placed treatment cylinder, a drive assembly installed at the upper end of the treatment cylinder, and a hollow stirring rod installed at the output end of the drive assembly;

[0008] An annular collection seat is fixedly installed on the inner side of the treatment cylinder, and a primary filter screen is elastically and vertically installed on the inner side of the collection seat. The primary filter screen and the stirring rod are keyed together. A partition is fixedly installed on the lower inner side of the treatment cylinder, and a solenoid valve is installed in the middle of the partition. An elastic cylinder that can be elastically twisted is fixedly connected between the primary filter screen and the partition. A liquid tank for holding flocculant is also fixedly installed on the outer side of the treatment cylinder, and a liquid delivery assembly for conveying flocculant is set between the liquid tank and the stirring rod. A fixing rod is fixedly installed on the outer side of the stirring rod, and a telescopic cylinder is elastically and telescopically connected to the outer side of the fixing rod. During the extension and retraction of the fixing rod and the telescopic cylinder, sewage is extracted and discharged.

[0009] Preferably, the drive assembly includes a support plate fixedly mounted on the upper end of the processing cylinder, and a first motor is fixedly installed above the support plate via a frame. An incomplete gear is fixedly installed at the output end of the first motor, and a transmission gear is fixedly installed on the upper outer side of the stirring rod. The incomplete gear and the transmission gear are meshed and connected. The stirring rod passes through the support plate and is elastically rotatably connected to it.

[0010] Preferably, the collection seat and the primary filter are coaxially arranged, and the primary filter rotates synchronously during the rotation of the stirring rod.

[0011] Preferably, during the rotation of the primary filter, the elastic cylinder is twisted in conjunction with the partition, and the primary filter is pulled downward during the twisting of the elastic cylinder. A buffer spring is connected between the primary filter and the collection seat. At the same time, during the rotation and lifting adjustment of the primary filter, the impurities filtered from its surface are shaken off into the collection seat. The elastic cylinder is made of rubber, and the flow of sewage inside the elastic cylinder is accelerated during the twisting of the elastic cylinder.

[0012] Preferably, the infusion assembly includes an air inlet pipe installed on the treatment cylinder, and an air delivery pipe is connected between the treatment cylinder and the liquid tank. Both the air inlet pipe and the air delivery pipe are equipped with a one-way valve structure. During the twisting process of the elastic cylinder, the air pressure between it and the treatment cylinder is changed. During the twisting process of the elastic cylinder, purified air is drawn into the inside of the treatment cylinder through the air inlet pipe. When the elastic cylinder returns to its original state, air is input into the liquid tank from the inside of the treatment cylinder through the air delivery pipe, and the upper end of the air delivery pipe is located below the liquid surface.

[0013] Preferably, the infusion assembly further includes a rotating tube rotatably mounted on the upper end of the stirring rod, and an infusion tube is fixedly connected between the rotating tube and the liquid tank. The lower end of the infusion tube is located below the liquid surface in the liquid tank. At the same time, after the air pressure inside the liquid tank increases, the flocculant is transported to the inside of the rotating tube and the stirring rod through the infusion tube.

[0014] Preferably, a ball bearing is embedded and rotatably mounted at one end of the telescopic cylinder near the elastic cylinder. During the twisting process of the elastic cylinder, its inner wall squeezes the ball bearing to drive the telescopic cylinder and the fixed rod to extend and retract. A spring is connected between the fixed rod and the telescopic cylinder. At the same time, a piston block is fixedly connected to one end of the fixed rod located inside the telescopic cylinder. The piston block and the telescopic cylinder are connected by interference fit. A suction tube is provided through the fixed rod and the piston block. The lower end of the suction tube passes through the side wall of the stirring rod and extends to the lower end of the stirring rod.

[0015] Preferably, a guide post is rotatably mounted on the outer side of the telescopic cylinder near the stirring rod, and a sleeve is fixedly mounted on the outer side of the stirring rod. The sleeve and the telescopic cylinder are fitted together, and a spiral guide groove is provided on the sleeve. When the telescopic cylinder moves and is adjusted, the guide post slides along the guide groove, thereby driving the telescopic cylinder to rotate synchronously during sliding adjustment. An impeller is fixedly mounted on the outer side of the telescopic cylinder, and a drain hole communicating with the telescopic cylinder is provided in the impeller. Both the drain hole and the suction pipe are equipped with a one-way valve structure. During the movement of the telescopic cylinder, liquid near the lower end of the stirring rod is drawn through the suction pipe and evenly discharged through the drain hole on the impeller.

[0016] Preferably, the lower end of the solenoid valve is rotatably connected to a centrifugal filter cartridge, and a second motor is fixedly installed at the lower end of the processing cartridge, with the output end of the second motor fixedly connected to the lower end of the centrifugal filter cartridge.

[0017] A treatment process for a multi-stage textile wastewater treatment device includes the following steps:

[0018] S1. Sewage is injected into the upper part of the treatment cylinder through the pipeline. At this time, the primary filter screen can perform preliminary filtration of impurities in the sewage. At the same time, the first motor is started, which drives the stirring rod to rotate the primary filter screen synchronously. At this time, the primary filter screen will twist and adjust the elastic cylinder, thereby pulling the primary filter screen to adjust its synchronous elastic lifting and lowering, realizing the backwashing and cleaning of the filtered material on the surface of the primary filter screen.

[0019] S2. As the elastic cylinder twists and recovers, the flocculant in the liquid tank can be transported to the inside of the elastic cylinder by adjusting the air pressure between the treatment cylinder and the elastic cylinder.

[0020] S3. During the rotation of the stirring rod, the telescopic cylinder will be squeezed by the twisted telescopic cylinder, which will cause the telescopic cylinder to extend and retract, thereby performing multi-directional stirring and accelerating mixing through the blade rod;

[0021] S4. After flocculation is complete, open the solenoid valve and start the second motor to allow the centrifugal filter cartridge to perform secondary filtration, achieving further treatment and purification of the wastewater.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the multi-stage treatment device and process for textile wastewater can effectively filter wastewater in multiple stages, and can efficiently backwash and clean the filter screen. At the same time, it can realize the automatic addition and efficient mixing of flocculants, ensuring treatment efficiency and purification effect. The specific contents are as follows;

[0023] 1. Equipped with a stirring rod and a pre-filter, the pre-filter can perform preliminary filtration of sewage, while the rotation of the stirring rod can drive the pre-filter to rotate synchronously, so that the impurities filtered out by the pre-filter can fall into the collection seat for collection.

[0024] Furthermore, a buffer spring and an elastic cylinder are provided. As the primary filter screen rotates back and forth, the elastic cylinder can be driven to twist back and forth. During the twisting process, the elastic cylinder can pull the primary filter screen down synchronously. As the liquid level inside the elastic cylinder rises, it can backflush the down-moving primary filter screen, so that the primary filter screen can cooperate with the shaking and rotation to efficiently clean the filtered material on its outside.

[0025] 2. It is equipped with an elastic cylinder and a liquid tank. As the elastic cylinder twists back and forth, the air pressure between it and the treatment cylinder will change. During the twisting process of the elastic cylinder, air can be drawn into the space between it and the treatment cylinder through the air inlet pipe. During the recovery process of the elastic cylinder, the air is introduced into the liquid tank through the air delivery pipe, which increases the air pressure inside the liquid tank. This allows the flocculant to be automatically pumped into the inside of the elastic cylinder through the delivery pipe and the stirring rod.

[0026] 3. Equipped with a telescopic cylinder and blades, the telescopic cylinder can be extended and retracted outside the fixed rod by the rotation and twisting of the stirring rod as it rotates and twists, thereby expanding the stirring range of the blades. At the same time, the telescopic cylinder can draw sewage and flocculant through the suction pipe during its movement and discharge them through the drain hole of the blades, thereby further accelerating the liquid flow, improving the mixing effect, accelerating the flocculation treatment, and improving the purification efficiency of the equipment. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the main structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0029] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0030] Figure 4 This is a schematic diagram of the connection structure between the stirring rod and the primary filter screen of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of the collection seat and the primary filter screen of the present invention;

[0032] Figure 6 This is a schematic diagram of the connection structure between the stirring rod and the telescopic cylinder of the present invention;

[0033] Figure 7 This is a schematic cross-sectional view of the telescopic cylinder structure of the present invention;

[0034] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0035] Figure 9 This is a schematic cross-sectional view of the rotating tube structure of the present invention.

[0036] In the diagram: 1. Processing cylinder; 101. Baffle plate; 102. Solenoid valve; 2. Support plate; 3. First motor; 4. Stirring rod; 5. Incomplete gear; 6. Transmission gear; 7. Collection seat; 8. Primary filter screen; 9. Buffer spring; 10. Elastic cylinder; 11. Liquid tank; 12. Air inlet pipe; 13. Gas delivery pipe; 14. Liquid delivery pipe; 15. Rotating pipe; 16. Fixed rod; 17. Piston block; 18. Telescopic cylinder; 19. Ball bearing; 20. Suction pipe; 21. Blade; 22. Guide column; 23. Sleeve; 24. Guide groove; 25. Centrifugal filter cylinder; 26. Second motor. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1: Existing multi-stage textile wastewater treatment devices are inconvenient to automatically clean the filter structure during the filtration process, which may lead to clogging of the filter pores and reduce filtration efficiency. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-5 As shown;

[0039] A multi-stage treatment device for textile wastewater includes a vertically placed treatment cylinder 1. A drive assembly is installed at the upper end of the treatment cylinder 1, and a hollow stirring rod 4 is installed at the output end of the drive assembly. An annular collection seat 7 is fixedly installed inside the treatment cylinder 1, and a primary filter 8 is elastically and vertically installed inside the collection seat 7. The primary filter 8 and the stirring rod 4 are keyed together. Meanwhile, a partition 101 is fixedly installed on the lower inner side of the treatment cylinder 1, and a solenoid valve 102 is installed in the middle of the partition 101. An elastic cylinder 10 that can be elastically twisted is fixedly connected between the primary filter 8 and the partition 101.

[0040] The drive assembly includes a support plate 2 fixedly mounted on the upper end of the treatment cylinder 1, and a first motor 3 fixedly mounted on the support plate 2 via a frame. An incomplete gear 5 is fixedly mounted on the output end of the first motor 3. At the same time, a transmission gear 6 is fixedly mounted on the upper outer side of the stirring rod 4. The incomplete gear 5 and the transmission gear 6 are meshed and connected. The stirring rod 4 passes through the support plate 2 and is elastically rotatably connected to it. The collection seat 7 and the primary filter screen 8 are coaxially arranged. During the rotation of the stirring rod 4, the primary filter screen 8 is driven to rotate synchronously. During the rotation of the primary filter screen 8, it cooperates with the partition plate 101 to twist the elastic cylinder 10. During the twisting of the elastic cylinder 10, the primary filter screen 8 is pulled down. A buffer spring 9 is connected between the primary filter screen 8 and the collection seat 7. During the rotation and lifting adjustment of the primary filter screen 8, the impurities filtered from its surface are shaken off and enter the collection seat 7. The elastic cylinder 10 is made of rubber, and during the twisting of the elastic cylinder 10, the flow of sewage inside it is accelerated.

[0041] By adopting the above technical solution, the first motor 3 is started, causing it to drive the incomplete gear 5 to rotate. At this time, the incomplete gear 5 will intermittently mesh with the transmission gear 6, thereby driving the transmission gear 6 to drive the stirring rod 4 to rotate elastically back and forth. At this time, the stirring rod 4 will drive the primary filter screen 8 to rotate synchronously, and the sewage is injected into the primary filter screen 8 through the upper end of the treatment cylinder 1. At this time, the primary filter screen 8 can perform preliminary filtration of textile sewage. As the primary filter screen 8 rotates, it can use centrifugal force to centrifuge and throw off the impurities filtered on its surface, which are then collected by the collection seat 7. It can work with the partition 101 to twist the elastic cylinder 10. As the elastic cylinder 10 twists, its upper end can pull the primary filter screen 8 to move downward elastically. This allows the primary filter screen 8 to move up and down synchronously and shake during the reciprocating rotation, so as to promote the cleaning of the filtered material on the surface of the primary filter screen 8. In the later stage of sewage injection, during the downward movement of the primary filter screen 8, the twisting of the elastic cylinder 10 will cause the liquid level inside to rise, so that the filtered sewage can contact the primary filter screen 8 from bottom to top, realizing the reverse flushing of the primary filter screen 8, ensuring that the primary filter screen 8 is fully cleaned, and preventing the wire from getting stuck in the filter holes of the primary filter screen 8.

[0042] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. In the multi-stage textile wastewater treatment device, a single stirring method is used during reagent addition, resulting in low reagent mixing efficiency. To further solve this technical problem, this example discloses the following technical content: Figures 2-3 and Figures 6-9 As shown;

[0043] A liquid tank 11 for holding flocculant is fixedly installed on the outside of the treatment cylinder 1, and a liquid delivery assembly for conveying flocculant is provided between the liquid tank 11 and the stirring rod 4. A fixing rod 16 is fixedly installed on the outside of the stirring rod 4, and a telescopic cylinder 18 is elastically telescopically connected to the outside of the fixing rod 16. During the extension and retraction of the fixing rod 16 and the telescopic cylinder 18, sewage is extracted and discharged.

[0044] A liquid tank 11 for holding flocculant is fixedly installed on the outside of the treatment cylinder 1, and a liquid delivery assembly for conveying flocculant is provided between the liquid tank 11 and the stirring rod 4. A fixing rod 16 is fixedly installed on the outside of the stirring rod 4, and a telescopic cylinder 18 is elastically telescopically connected to the outside of the fixing rod 16. During the extension and retraction of the fixing rod 16 and the telescopic cylinder 18, sewage is extracted and discharged.

[0045] The infusion assembly includes an air inlet pipe 12 installed on the treatment cylinder 1, and an air delivery pipe 13 connecting the treatment cylinder 1 and the liquid tank 11. Both the air inlet pipe 12 and the air delivery pipe 13 are equipped with a one-way valve structure. During the twisting process of the elastic cylinder 10, the air pressure between it and the treatment cylinder 1 is changed. During the twisting process of the elastic cylinder 10, the inner side of the treatment cylinder 1 draws purified air through the air inlet pipe 12. When the elastic cylinder 10 returns to its original state, the inner side of the treatment cylinder 1 inputs air into the liquid tank 11 through the air delivery pipe 13, and the upper end of the air delivery pipe 13 is located below the liquid surface.

[0046] The infusion assembly also includes a rotating tube 15 rotatably mounted on the upper end of the stirring rod 4, and an infusion tube 14 is fixedly connected between the rotating tube 15 and the liquid tank 11. The lower end of the infusion tube 14 is located below the liquid surface of the liquid tank 11. At the same time, after the air pressure inside the liquid tank 11 increases, the flocculant is transported to the inside of the rotating tube 15 and the stirring rod 4 through the infusion tube 14.

[0047] A ball bearing 19 is rotatably mounted embedded in one end of the telescopic cylinder 18 near the elastic cylinder 10. During the twisting process of the elastic cylinder 10, its inner wall squeezes the ball bearing 19 to drive the telescopic cylinder 18 and the fixed rod 16 to telescopically connect. A spring is connected between the fixed rod 16 and the telescopic cylinder 18. At the same time, a piston block 17 is fixedly connected to one end of the fixed rod 16 located inside the telescopic cylinder 18. The piston block 17 and the telescopic cylinder 18 are connected by interference fit. A suction pipe 20 is provided through the fixed rod 16 and the piston block 17. The lower end of the suction pipe 20 passes through the side wall of the stirring rod 4 and extends to the lower end of the stirring rod 4.

[0048] A guide post 22 is rotatably mounted on the outer side of the telescopic cylinder 18 near the stirring rod 4, and a sleeve 23 is fixedly mounted on the outer side of the stirring rod 4. The sleeve 23 is sleeved with the telescopic cylinder 18, and a spiral guide groove 24 is provided on the sleeve 23. When the telescopic cylinder 18 moves and is adjusted, the guide post 22 slides along the guide groove 24, thereby driving the telescopic cylinder 18 to rotate synchronously when it slides and is adjusted. An blade 21 is fixedly mounted on the outer side of the telescopic cylinder 18, and a drain hole connected to the telescopic cylinder 18 is provided in the blade 21. Both the drain hole and the suction pipe 20 are provided with a one-way valve structure. During the movement of the telescopic cylinder 18, the liquid near the lower end of the stirring rod 4 is drawn through the suction pipe 20 and discharged evenly through the drain hole on the blade 21.

[0049] The lower end of the solenoid valve 102 is rotatably connected to the centrifugal filter cartridge 25, and the lower end of the processing cartridge 1 is fixedly installed with the second motor 26, and the output end of the second motor 26 is fixedly connected to the lower end of the centrifugal filter cartridge 25.

[0050] By adopting the above technical solution, as the elastic cylinder 10 twists back and forth, the air pressure between it and the inner wall of the treatment cylinder 1 changes due to the spatial change. When the elastic cylinder 10 twists, the space between the treatment cylinder 1 and the elastic cylinder 10 will draw in filtered air through the air inlet pipe 12. When the elastic cylinder 10 returns to its original position, the space between the treatment cylinder 1 and the elastic cylinder 10 will supply air to the liquid tank 11 through the air delivery pipe 13, causing the flocculant in the liquid tank 11 to generate bubbles, thereby ensuring the full dissolution of the flocculant. At the same time, after the air pressure inside the liquid tank 11 increases, the dissolved flocculant can be pumped into the rotating pipe 15 through the liquid delivery pipe 14, and then into the stirring rod 4 through the rotating pipe 15. Finally, it enters the sewage inside the elastic cylinder 10 through the cavity inside the stirring rod 4. The twisting of the elastic cylinder 10 will cause the liquid level inside to change back and forth, thereby accelerating the flow of liquid and promoting the mixing of sewage and flocculant. The ball bearing 19 at the end of the telescopic cylinder 18 is squeezed, causing the telescopic cylinder 18 to extend and retract outside the fixed rod 16. At the same time, the guide post 22 on the outside of the telescopic cylinder 18 slides along the spiral guide groove 24 on the sleeve 23, thereby driving the telescopic cylinder 18 to rotate back and forth, thus effectively expanding the stirring range of the blade 21. Meanwhile, the piston block 17 at the end of the fixed rod 16 slides back and forth inside the telescopic cylinder 18, so that the telescopic cylinder 18 uses the suction pipe 20 to draw liquid near the lower end of the stirring rod 4 through the negative pressure, and discharges it evenly through the drain hole on the blade 21, thereby accelerating the mixing effect of sewage and flocculant inside the elastic cylinder 10. After flocculation is completed, the second motor 26 is started and the solenoid valve 102 is opened, so that the flocculated sewage enters the centrifugal filter cartridge 25. The centrifugal filter cartridge 25 can achieve secondary filtration of sewage by rotation, ensuring efficient dewatering of flocculants and effectively improving the sewage treatment effect.

[0051] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage treatment device for textile wastewater, comprising a vertically placed treatment cylinder (1), wherein a drive assembly is installed at the upper end of the treatment cylinder (1), and a hollow stirring rod (4) is installed at the output end of the drive assembly; Its features are, An annular collection seat (7) is fixedly installed on the inner side of the treatment cylinder (1), and a primary filter (8) is elastically lifted and installed on the inner side of the collection seat (7). The primary filter (8) and the stirring rod (4) are keyed together. At the same time, a partition (101) is fixedly installed on the lower inner side of the treatment cylinder (1), and a solenoid valve (102) is installed in the middle of the partition (101). An elastic cylinder (10) that can be elastically twisted is fixedly connected between the primary filter (8) and the partition (101). A liquid tank (11) for holding flocculant is also fixedly installed on the outer side of the treatment cylinder (1), and a liquid delivery component for conveying flocculant is provided between the liquid tank (11) and the stirring rod (4). A fixing rod (16) is fixedly installed on the outer side of the stirring rod (4), and a telescopic cylinder (18) is elastically telescopically connected to the outer side of the fixing rod (16). During the telescopic process of the fixing rod (16) and the telescopic cylinder (18), sewage is extracted and discharged.

2. The multi-stage treatment device for textile wastewater according to claim 1, characterized in that: The drive assembly includes a support plate (2) fixedly mounted on the upper end of the processing cylinder (1), and a first motor (3) is fixedly mounted on the support plate (2) via a frame. An incomplete gear (5) is fixedly mounted on the output end of the first motor (3). At the same time, a transmission gear (6) is fixedly mounted on the upper outer side of the stirring rod (4). The incomplete gear (5) and the transmission gear (6) are meshed and connected. The stirring rod (4) passes through the support plate (2) and is elastically rotatably connected to it.

3. The multi-stage textile wastewater treatment device according to claim 1, characterized in that: The collection seat (7) and the primary filter (8) are coaxially arranged, and the primary filter (8) is driven to rotate synchronously during the rotation of the stirring rod (4).

4. The multi-stage textile wastewater treatment device according to claim 3, characterized in that: During the rotation of the primary filter (8), it works with the partition (101) to twist the elastic cylinder (10), and the elastic cylinder (10) pulls the primary filter (8) downward during the twisting process. A buffer spring (9) is connected between the primary filter (8) and the collection seat (7). At the same time, during the rotation and lifting adjustment process, the impurities filtered from the surface of the primary filter (8) are shaken off into the collection seat (7). The elastic cylinder (10) is made of rubber, and the flow of sewage inside the elastic cylinder (10) is accelerated during the twisting process.

5. A multi-stage textile wastewater treatment device according to claim 1, characterized in that: The infusion assembly includes an air inlet pipe (12) installed on the treatment cylinder (1), and an air delivery pipe (13) is connected between the treatment cylinder (1) and the liquid tank (11). Both the air inlet pipe (12) and the air delivery pipe (13) are equipped with a one-way valve structure. During the twisting process of the elastic cylinder (10), the air pressure between it and the treatment cylinder (1) is changed. During the twisting process of the elastic cylinder (10), the inner side of the treatment cylinder (1) draws in purified air through the air inlet pipe (12). When the elastic cylinder (10) is restored, the inner side of the treatment cylinder (1) inputs air into the liquid tank (11) through the air delivery pipe (13), and the upper end of the air delivery pipe (13) is located below the liquid surface.

6. A multi-stage textile wastewater treatment device according to claim 5, characterized in that: The infusion assembly also includes a rotating tube (15) rotatably mounted on the upper end of the stirring rod (4), and an infusion tube (14) is fixedly connected between the rotating tube (15) and the liquid tank (11). The lower end of the infusion tube (14) is located below the liquid surface of the liquid tank (11). At the same time, after the air pressure inside the liquid tank (11) increases, the flocculant is transported to the inside of the rotating tube (15) and the stirring rod (4) through the infusion tube (14).

7. A multi-stage textile wastewater treatment device according to claim 1, characterized in that: The telescopic cylinder (18) has a ball bearing (19) embedded and rotatably mounted at one end near the elastic cylinder (10). During the twisting process of the elastic cylinder (10), its inner wall squeezes the ball bearing (19) to drive the telescopic cylinder (18) and the fixed rod (16) to telescopically connect. A spring is connected between the fixed rod (16) and the telescopic cylinder (18). At the same time, a piston block (17) is fixedly connected to one end of the fixed rod (16) located inside the telescopic cylinder (18). The piston block (17) and the telescopic cylinder (18) are connected by interference fit. A suction tube (20) is provided through the fixed rod (16) and the piston block (17). At the same time, the lower end of the suction tube (20) passes through the side wall of the stirring rod (4) and extends to the lower end of the stirring rod (4).

8. A multi-stage textile wastewater treatment device according to claim 7, characterized in that: The telescopic cylinder (18) has a guide post (22) rotatably installed on the outer side of one end near the stirring rod (4), and a sleeve (23) is fixedly installed on the outer side of the stirring rod (4). The sleeve (23) and the telescopic cylinder (18) are connected together. At the same time, a spiral guide groove (24) is opened on the sleeve (23). When the telescopic cylinder (18) moves and is adjusted, the guide post (22) slides along the guide groove (24), thereby driving the telescopic cylinder (18) to rotate synchronously when it is adjusted. A blade (21) is fixedly installed on the outer side of the telescopic cylinder (18), and a drain hole connected to the telescopic cylinder (18) is opened in the blade (21). At the same time, a one-way valve structure is provided in both the drain hole and the suction pipe (20). During the movement of the telescopic cylinder (18), the liquid near the lower end of the stirring rod (4) is drawn through the suction pipe (20) and discharged evenly through the drain hole on the blade (21).

9. A multi-stage textile wastewater treatment device according to claim 1, characterized in that: The lower end of the solenoid valve (102) is rotatably connected to a centrifugal filter cartridge (25), and the lower end of the processing cylinder (1) is fixedly installed with a second motor (26), and the output end of the second motor (26) is fixedly connected to the lower end of the centrifugal filter cartridge (25).

10. A treatment process for a multi-stage textile wastewater treatment device, characterized in that, Includes the following steps: S1. Sewage is injected into the upper end of the treatment cylinder (1) through the pipeline. At this time, the primary filter (8) can perform preliminary filtration of impurities in the sewage. At the same time, the first motor (3) is started, which drives the stirring rod (4) to rotate the primary filter (8) synchronously. At this time, the primary filter (8) will twist and adjust the elastic cylinder (10), thereby pulling the primary filter (8) to adjust its synchronous elastic lifting and lowering, so as to achieve backwashing and cleaning of the filtered material on the surface of the primary filter (8). S2. As the elastic cylinder (10) twists and recovers, the flocculant in the liquid tank (11) can be transported to the inside of the elastic cylinder (10) by adjusting the air pressure between the processing cylinder (1) and the elastic cylinder (10). S3. During the rotation of the stirring rod (4), the telescopic cylinder (18) will be squeezed by the twisted telescopic cylinder (18), which will cause the telescopic cylinder (18) to extend and retract, thereby performing multi-directional stirring and accelerating mixing through the blade (21); S4. After flocculation is completed, open the solenoid valve (102) and start the second motor (26) so that the centrifugal filter cartridge (25) can perform secondary filtration to achieve further treatment and purification of wastewater.

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