Denim production wastewater treatment device and treatment method

Abstract

The application relates to the technical field of wastewater treatment devices, and discloses a denim production wastewater treatment device and a treatment method, which comprises a cleaning part on the upper part of a main body; a circulating grid chain is arranged on the main body; a brush roller is movably arranged on the cleaning part and is used for cleaning the grid after moving; a transmission part is arranged on the circulating grid chain; and a transmission assembly is arranged on the cleaning part, the circulating grid chain is used for driving the grid to circulate through the cleaning part, and the transmission part is used for driving the brush roller to move through the transmission assembly. Through the technical scheme, the problems of the external power source of the brush roller of the rotary grid cleaner and cleaning at a fixed position in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a denim production wastewater treatment device and treatment method. Background Technology

[0002] The treatment of denim production wastewater mainly involves a series of physical, chemical, and biological methods to remove various pollutants from the wastewater and bring it up to the national discharge standards. These methods include: physical treatment such as bar screen filtration and sedimentation; chemical treatment such as neutralization, coagulation, and oxidation; and biological treatment such as aerobic and anaerobic biological treatment. In short, denim wastewater treatment is a comprehensive process that requires selecting appropriate treatment methods and process combinations based on the characteristics and treatment requirements of the wastewater to effectively remove pollutants, protect the environment, and conserve water resources.

[0003] Currently, various types of bar screens are commonly used for physical treatment of wastewater, including direct current bar screens and rotary bar screens. When using these devices to treat wastewater from denim production, the main purpose is to use the bar screens to intercept larger suspended and floating objects in the wastewater, such as fibers and fabric strips, to prevent them from entering subsequent treatment facilities and causing blockages and equipment damage.

[0004] Current rotary bar screens utilize a unique set of rake teeth assembled into a rotating bar screen chain during operation. Driven by a motor reducer, the rake tooth chain rotates against the direction of water flow. When the rake teeth reach the upper part of the equipment, each set of rake teeth tilts due to the guidance of the grooved wheel and curved rail, causing most of the suspended matter such as fibers and strips to fall off by gravity. At the same time, a brush roller is equipped in this part to brush off the adhering suspended matter.

[0005] However, traditional rotary bar screen cleaners still have the following problems: the brush rollers equipped on the upper part of the rotary bar screen cleaner require an additional power source to drive them, which increases the cost. Also, the brush rollers only clean in a fixed position and have a small amount of relative movement with the screen, which makes them less effective at cleaning adhering suspended matter. Over time, this makes it difficult for the rotary bar screen cleaner to function properly and easily causes the accumulation of suspended matter at the screen. Summary of the Invention

[0006] This invention proposes a device and method for treating wastewater from denim production, which solves the problems of external power source for the brush rollers of rotary bar screens and cleaning only in fixed positions in related technologies.

[0007] The technical solution of the present invention is as follows: A wastewater treatment device for denim production includes: The main body has a cleaning section on its upper part; A circulating grid chain, wherein the circulating grid chain is circularly arranged on the main body; A brush roller is movably disposed on the cleaning section, and after being moved, the brush roller is used to clean the grille; The transmission unit is disposed on the circulating grid chain; A transmission assembly is disposed on the cleaning section. After the circulating grid chain circulates, it drives the grid to circulate through the cleaning section and drives the transmission part to move the brush roller through the transmission assembly.

[0008] As a further technical solution, the transmission assembly includes: A guide plate is disposed on the cleaning part. The guide plate has a guide groove and a transmission groove, which are connected. After the circulating grid chain circulates, the transmission part circulates through the guide groove. A transmission block is movably disposed within the transmission groove. When subjected to external force, the transmission block extends into or out of the guide groove to drive the brush roller to move and rotate. The transmission part provides external force to the transmission block through the guide groove.

[0009] As a further technical solution, the transmission assembly also includes: A baffle is disposed on the guide plate and located within the transmission groove; An elastic element, one end of which is connected to the transmission block and the other end of which is connected to the baffle, is located in the transmission groove. The elastic element provides the force for the transmission block to extend into the guide groove.

[0010] As a further technical solution, the transmission groove is U-shaped and also includes: A flexible connecting rod is provided, with one end connected to the transmission block and the other end connected to the brush roller. The flexible connecting rod is located in the transmission groove and passes through the elastic element and the baffle. After the transmission block extends out of the guide groove, the flexible connecting rod moves to drive the brush roller to move and rotate.

[0011] As a further technical solution, the brush roller has a rotating shaft portion located below the transmission groove, and further includes: A connector is provided, through which the other end of the flexible connecting rod is connected to the rotating shaft. Two racks are symmetrically arranged on the guide plate. Both racks mesh with the rotating shaft, which is located between the two racks. The moving direction of the brush roller is parallel to the length direction of the racks, and the rotating direction of the brush roller is perpendicular to the moving direction of the brush roller.

[0012] As a further technical solution, the connector is L-shaped, with one end of the connector connected to the other end of the flexible connecting rod, and the other end of the connector having a support ring portion. The rotating shaft portion passes through the support ring portion, and the transmission groove has a clearance groove, with the connector passing through the clearance groove.

[0013] As a further technical solution, the grid has a plurality of filter grooves, the brush roller has a brush part, and after the brush roller moves and rotates, the brush part passes through the filter grooves.

[0014] As a further technical solution, there are two guide plates, which are symmetrically arranged on the cleaning part, and the grid circulation chain is located between the two guide plates.

[0015] As a further technical solution, there are multiple grilles and transmission parts, and the grilles and transmission parts are arranged in a one-to-one correspondence.

[0016] A method for treating wastewater from denim production, using the aforementioned denim production wastewater treatment device, includes the following steps: S1. Drive the circulating grid chain to circulate, control the transmission part to drive the brush roller to move and rotate, and clean the grid.

[0017] The working principle and beneficial effects of this invention are as follows: In this invention, the wastewater treatment device replaces the traditional external motor and utilizes the circulating grid chain of the rotary bar screen to provide the power required for the brush roller to rotate. At the same time, it can also use additional simple, low-cost, and easy-to-maintain transmission components to drive the brush roller to rotate while it can move along the track. This allows the wastewater treatment device to form a larger range of mutual movement with the bar screen during operation, thereby greatly improving the cleaning effect on suspended solids adhering to the bar screen, extending the service life of the wastewater treatment device, and the entire structure is simple and easy for workers to maintain later.

[0018] The advantages of this wastewater treatment device are: The circulating bar screen chain can continuously filter denim production wastewater, effectively removing larger suspended solids and floating matter such as fibers and fabric strips. This reduces the burden on subsequent wastewater treatment processes and improves overall treatment efficiency. As the bar screen continuously circulates through the cleaning area with the circulating bar screen chain, it ensures that the bar screen always maintains good filtration performance and avoids affecting the wastewater treatment progress due to bar screen blockage.

[0019] The coordination of the transmission unit and transmission components enables the brush roller to automatically and promptly remove and clean the screen, thereby maintaining the stable operation of the wastewater treatment device, reducing the frequency of equipment replacement and resource consumption, and meeting the requirements of energy conservation and environmental protection.

[0020] The device has a reasonable structural design, with all components working together to ensure stable and reliable operation. It can adapt to different wastewater flow rates and impurity contents generated during denim production, demonstrating strong adaptability and reliability.

[0021] The specific working principle of this wastewater treatment device is as follows: After the main body of the machine is installed, the wastewater from denim production undergoes physical, chemical, and biological treatment methods in sequence according to the process. Therefore, it must first undergo physical treatment by a rotary bar screen. An external motor drives a circulating bar screen chain, which in turn moves several sets of bar screens in a reciprocating motion to remove larger suspended solids and floating matter in the wastewater, such as fibers and fabric strips. Further, during operation, the transmission part and transmission components on the circulating bar screen chain are linked, which causes the brush rollers to move and complete the treatment of the bar screen at the cleaning area. Specifically, the linkage between the transmission part and the transmission components can take various forms, such as gear sets, circulating belts, and transmission rods. The goal is to ensure that the transmission part can link with the transmission components to move the brush rollers when it reaches the cleaning area while following the circulating bar screen chain. This saves on additional power sources and eliminates the need to keep the brush rollers in a cleaning state at all times. The brush rollers only function when the bar screen is in the cleaning area, which greatly extends the life of the wastewater treatment device. Attached Figure Description

[0022] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0023] Figure 1 This is a schematic diagram of the internal structure of the main body in this invention; Figure 2 This is a schematic diagram of the assembly of the circulating grid chain and brush roller in this invention; Figure 3 This is a schematic diagram of the circulating grid chain structure in this invention; Figure 4 This is a schematic diagram of the transmission component structure in this invention; Figure 5 For the present invention Figure 4 Enlarged view of section A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of section B in the middle; Figure 7 This is a schematic diagram of the main structure of the present invention.

[0024] In the diagram: 1. Main body, 101. Cleaning part, 2. Circulating grid chain, 3. Brush roller, 301. Rotating shaft, 302. Brush part, 4. Grid, 401. Filter tank, 5. Transmission part, 6. Transmission assembly, 601. Guide plate, 602. Guide groove, 603. Transmission groove, 604. Transmission block, 605. Baffle, 606. Elastic element, 607. Clearance groove, 7. Flexible connecting rod, 8. Connecting part, 801. Support ring, 9. Rack. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Reference Figures 1-7The first embodiment of the present invention provides a denim production wastewater treatment device, comprising: a main body 1, the upper part of which has a cleaning section 101; a circulating grid chain 2, which is cyclically disposed on the main body 1; a brush roller 3, which is movably disposed on the cleaning section 101 and is used to clean the grid 4 after moving; a transmission part 5, which is disposed on the circulating grid chain 2; and a transmission assembly 6, which is disposed on the cleaning section 101 and is used to drive the grid 4 to cyclically pass through the cleaning section 101 after the circulating grid chain 2 circulates, and is also used to drive the transmission part 5 to drive the brush roller 3 to move through the transmission assembly 6.

[0030] In this embodiment, as Figure 1-4 As shown, this wastewater treatment device replaces the traditional external motor and uses the circulating grid chain 2 of the rotary bar screen 4 to provide the power required for the brush roller 3 to rotate. At the same time, it can also use an additional simple, low-cost and easy-to-maintain transmission component 6 to drive the brush roller 3 to rotate and move along the track. This allows the wastewater treatment device to form a larger range of mutual movement with the bar screen 4 during operation, thereby greatly improving the cleaning effect on the suspended solids adhering to the bar screen 4, extending the service life of the wastewater treatment device, and the whole structure is simple and easy for workers to maintain later.

[0031] The advantages of this wastewater treatment device are: The circulating grid chain 2 can continuously filter the denim production wastewater, effectively removing larger suspended solids and floating matter, such as fibers and strips of fabric, reducing the burden on subsequent wastewater treatment processes and improving overall treatment efficiency. Furthermore, as the grid 4 continuously circulates through the cleaning section 101 with the circulating grid chain 2, it ensures that the grid 4 always maintains good filtration performance, avoiding any impact on wastewater treatment progress due to grid 4 clogging.

[0032] The cooperation between the transmission unit 5 and the transmission assembly 6 enables the brush roller 3 to automatically and promptly remove and clean the screen 4, thereby maintaining the stable operation of the wastewater treatment device and reducing the frequency of equipment replacement and resource consumption, which meets the requirements of energy conservation and environmental protection.

[0033] The device has a reasonable structural design, with all components working together to ensure stable and reliable operation. It can adapt to different wastewater flow rates and impurity contents generated during denim production, demonstrating strong adaptability and reliability.

[0034] The specific working principle of this wastewater treatment device is as follows: After the main body 1 of the machine is installed, the wastewater from denim production undergoes physical, chemical, and biological treatment methods in sequence according to the process. Therefore, it must first undergo physical treatment by a rotary bar screen 4. An external motor is started to drive the circulating bar screen chain 2, which drives several sets of bar screens 4 to move back and forth in a circular motion, thereby treating larger suspended solids and floating objects in the wastewater, such as fibers and strips of fabric. Further, during the operation, the transmission part 5 on the circulating bar screen chain 2 is linked with the transmission component 6, which causes the brush roller 3 to move and complete the treatment of the bar screen 4 at the cleaning part 101. Specifically, the linkage between the transmission part 5 and the transmission component 6 can take various forms, such as gear set, circulating belt, and transmission rod. The goal is to ensure that when the transmission part 5 follows the circulating bar screen chain 2 and reaches the cleaning part 101, it can be linked with the transmission component 6 to drive the brush roller 3 to move. This saves on additional power sources and does not require the brush roller 3 to be in a cleaning state at all times. The brush roller 3 only plays its role when the bar screen 4 is in the cleaning part 101, which greatly extends the life of the wastewater treatment device.

[0035] Furthermore, the transmission assembly 6 includes: a guide plate 601, which is disposed on the cleaning part 101. The guide plate 601 has a guide groove 602 and a transmission groove 603, which are connected. After the circulating grid chain 2 circulates, the transmission part 5 circulates through the guide groove 602; and a transmission block 604, which is movably disposed in the transmission groove 603. When the transmission block 604 is subjected to external force, it extends into or out of the guide groove 602 to drive the brush roller 3 to move and rotate. The transmission part 5 provides external force to the transmission block 604 through the guide groove 602.

[0036] In this embodiment, as Figure 2-5 As shown, the specific linkage action between the transmission part 5 and the transmission assembly 6 is configured such that the transmission assembly 6 includes a guide plate 601 and a transmission block 604. The guide plate 601 is fixed on the cleaning part 101 of the main body 1 and mainly provides a guide groove 602 to limit the range of motion of the transmission part 5, which facilitates the subsequent action of the transmission part 5 and also facilitates the stable circulation of the circulating grid chain 2. The transmission block 604 is reciprocatingly installed in the transmission groove 603 that communicates with the guide groove 602. The reciprocating movement is to adapt to the transmission part 5 circulating through the guide groove 602 and avoid interference and collision between the two, which would prevent subsequent actions from being performed. Therefore, when the transmission part 5 contacts the transmission block 604 through the guide groove 602, it will provide external force to make it extend out of the guide groove 602. Conversely, a part of the transmission block 604 will extend from the transmission groove 603 into the guide groove 602, thereby converting the action of the transmission part 5 which is in the same direction as the circulation of the circulating grid chain 2 into the reciprocating movement of the transmission block 604 in other directions.

[0037] Furthermore, the movement of the transmission block 604 in other directions can be used to drive a larger relative movement between the brush roller 3 and the grid 4, thereby improving the cleaning effect.

[0038] Furthermore, the transmission assembly 6 also includes: a baffle 605, which is disposed on the guide plate 601 and located in the transmission groove 603; and an elastic member 606, one end of which is connected to the transmission block 604 and the other end is connected to the baffle 605, located in the transmission groove 603, and the elastic member 606 provides the force for the transmission block 604 to extend into the guide groove 602.

[0039] In this embodiment, as Figure 2-5 As shown, specifically, to achieve the reciprocating movement of the transmission block 604, an elastic element 606 is installed in the transmission groove 603, and a welded baffle 605 provides stable support therein. The two ends of the elastic element 606, in the form of a spring, are fixedly connected to the transmission block 604 and the baffle 605, respectively. The elastic element 606 provides the force for the transmission block 604 to extend into the guide groove 602. Normally, when it is not subjected to external force from the transmission part 5, part of its position is located in the guide groove 602. Only when the transmission part 5 passes through the guide groove 602 will it be subjected to external force and squeezed entirely into the transmission groove 603. Therefore, friction will occur between the two. To improve the service life, a smooth arc surface can be designed at the part of the transmission block 604 subjected to external force to ensure that the operation is completed normally.

[0040] Furthermore, the transmission groove 603 is U-shaped and also includes a flexible connecting rod 7. One end of the flexible connecting rod 7 is connected to the transmission block 604, and the other end is connected to the brush roller 3. The flexible connecting rod 7 is located in the transmission groove 603 and passes through the elastic member 606 and the baffle 605. After the transmission block 604 extends out of the guide groove 602, the flexible connecting rod 7 moves to drive the brush roller 3 to move and rotate.

[0041] In this embodiment, as Figure 3-7 As shown, specifically, the flexible connecting rod 7, within the U-shaped transmission groove 603, transmits power from the transmission block 604 (which has a different circulation direction than the circulating grid chain 2) to the brush roller 3. The transmission block 604 moves perpendicular to the transmission part 5 in the guide groove 602. With the cooperation of the U-shape, the transmission block 604 pushes the flexible connecting rod 7, causing one end of it to move in the opposite direction to the movement of the transmission block 604, i.e., the transmission block 604 moves downward, causing one end of the flexible connecting rod 7 to move upward. By connecting the flexible connecting rod 7 to the brush roller 3, the upward movement of the brush roller 3 can be controlled synchronously, achieving the function of relative movement with the grid 4. The two can cyclically move relative to each other, such as moving closer or further apart, to greatly improve the cleaning effect.

[0042] Furthermore, the brush roller 3 has a rotating shaft portion 301 located below the transmission groove 603, and also includes: a connecting member 8, the other end of the flexible connecting rod 7 being connected to the rotating shaft portion 301 via the connecting member 8; two racks 9, the two racks 9 being symmetrically arranged on the guide plate 601, both racks 9 meshing with the rotating shaft portion 301, and the rotating shaft portion 301 being located between the two racks 9, the moving direction of the brush roller 3 being parallel to the length direction of the racks 9, and the rotating direction of the brush roller 3 being perpendicular to the moving direction of the brush roller 3.

[0043] In this embodiment, as Figure 3-7 As shown, the flexible connecting rod 7 is connected to the rotating shaft 301 of the brush roller 3 through the connecting piece 8, which drives the brush roller 3 to move. At the same time, two sets of racks 9 are symmetrically welded on the guide plate 601. The two sets of racks 9 clamp the rotating shaft 301 of the brush roller 3 and mesh with it. The flexible connecting rod 7 drives the brush roller 3 to move as a whole through the connecting piece 8. When it moves relative to the screen 4, the brush roller 3 can rotate to quickly clean up a large amount of impurities. Specifically, the direction of movement of the brush roller 3 is parallel to the length direction of the racks 9, and the direction of rotation of the brush roller 3 is perpendicular to the direction of movement of the brush roller 3, which facilitates the stable operation of the entire wastewater treatment device.

[0044] Furthermore, the connector 8 is L-shaped, with one end of the connector 8 connected to the other end of the flexible connecting rod 7, and the other end of the connector 8 having a support ring portion 801. The rotating shaft portion 301 passes through the support ring portion 801, and the transmission groove 603 has a clearance groove 607, through which the connector 8 passes.

[0045] In this embodiment, as Figure 3-7 As shown, the flexible connecting rod 7 is connected to the rotating shaft 301 of the brush roller 3 via the connector 8. Specifically, to avoid interference between the moving brush roller 3 and structures such as the guide plate 601, the rotating shaft 301 is positioned below the transmission groove 603. Therefore, the connector 8 needs to be L-shaped to ensure the connection can be completed. A support ring 801 is also provided to avoid interference with the rotation of the rotating shaft 301. The cross-sectional area of ​​the support ring 801 is equal to that of the rotating shaft 301 to achieve stable support. When the flexible connecting rod 7 moves, the support ring 801 moves through the connector 8, and the brush roller 3 moves at the same time, and can rotate stably on the support ring 801.

[0046] The design of the clearance groove 607 for the transmission groove 603 is to avoid the movement trajectory of the connecting piece 8 following the flexible connecting rod 7, so as to avoid interference.

[0047] Furthermore, the grid 4 has a plurality of filter grooves 401, and the brush roller 3 has a brush part 302. After the brush roller 3 moves and rotates, the brush part 302 passes through the filter grooves 401.

[0048] Furthermore, there are two guide plates 601, which are symmetrically arranged on the cleaning part 101, and the grid 4 circulation chain is located between the two guide plates 601.

[0049] Furthermore, there are multiple grilles 4 and transmission parts 5, with each grille 4 and transmission part 5 arranged in a one-to-one correspondence.

[0050] In this embodiment, as Figure 3-7 As shown, the brush part 302 of the brush roller 3 can smoothly pass through the filter groove 401 of the grid 4, completing the relative movement between the two and avoiding the formation of a large interaction force, which would affect the overall operation.

[0051] A method for treating wastewater from denim production, using the aforementioned wastewater treatment device for denim production, includes the following steps: S1, driving the circulating grid chain 2 to circulate, controlling the transmission unit 5 to drive the brush roller 3 to move and rotate, and cleaning the grid 4.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for treating wastewater from denim production, characterized in that, include: The main body (1) has a cleaning part (101) on its upper part. A circulating grid chain (2) is circularly arranged on the main body (1); Brush roller (3), the brush roller (3) is movably disposed on the cleaning part (101), and the brush roller (3) is used to clean the grid (4) after it moves. A transmission unit (5) is provided on the circulating grid chain (2); The transmission assembly (6) is disposed on the cleaning part (101). After the circulating grid chain (2) circulates, it is used to drive the grid (4) to circulate through the cleaning part (101) and to drive the transmission part (5) to drive the brush roller (3) to move through the transmission assembly (6). The transmission assembly (6) includes: Guide plate (601), the guide plate (601) is disposed on the cleaning part (101), the guide plate (601) has guide groove (602) and transmission groove (603), the guide groove (602) and the transmission groove (603) are connected, after the circulating grid chain (2) circulates, the transmission part (5) circulates through the guide groove (602). The transmission block (604) is movably disposed in the transmission groove (603). When the transmission block (604) is subjected to external force, it extends into or out of the guide groove (602) to drive the brush roller (3) to move and rotate. The transmission part (5) provides external force to the transmission block (604) through the guide groove (602). The transmission assembly (6) also includes: A baffle (605) is disposed on the guide plate (601) and located within the transmission groove (603); An elastic element (606) is connected at one end to the transmission block (604) and at the other end to the baffle (605), and is located in the transmission groove (603). The elastic element (606) provides the force for the transmission block (604) to extend into the guide groove (602). The transmission groove (603) is U-shaped and also includes: A flexible connecting rod (7) is connected at one end to the transmission block (604) and at the other end to the brush roller (3). The flexible connecting rod (7) is located in the transmission groove (603) and passes through the elastic member (606) and the baffle (605). After the transmission block (604) extends out of the guide groove (602), the flexible connecting rod (7) moves and drives the brush roller (3) to move and rotate.

2. The denim production wastewater treatment device according to claim 1, characterized in that, The brush roller (3) has a rotating shaft (301) located below the transmission groove (603), and further includes: The other end of the flexible connecting rod (7) is connected to the rotating shaft (301) via the connector (8). Two racks (9) are symmetrically arranged on the guide plate (601). Both racks (9) mesh with the rotating shaft (301), and the rotating shaft (301) is located between the two racks (9). The moving direction of the brush roller (3) is parallel to the length direction of the racks (9), and the rotating direction of the brush roller (3) is perpendicular to the moving direction of the brush roller (3).

3. The denim production wastewater treatment device according to claim 2, characterized in that, The connector (8) is L-shaped. One end of the connector (8) is connected to the other end of the flexible connecting rod (7). The other end of the connector (8) has a support ring (801). The rotating shaft (301) passes through the support ring (801). The transmission groove (603) has a clearance groove (607). The connector (8) passes through the clearance groove (607).

4. The denim production wastewater treatment device according to claim 2, characterized in that, The grid (4) has a plurality of filter grooves (401), and the brush roller (3) has a brush part (302). After the brush roller (3) moves and rotates, the brush part (302) passes through the filter grooves (401).

5. The denim production wastewater treatment device according to claim 2, characterized in that, There are two guide plates (601), which are symmetrically arranged on the cleaning part (101), and the grid (4) circulation chain is located between the two guide plates (601).

6. The denim production wastewater treatment device according to claim 2, characterized in that, There are multiple grilles (4) and transmission parts (5), and the grilles (4) and transmission parts (5) are arranged in a one-to-one correspondence.

7. A method for treating wastewater from denim production, using the wastewater treatment device for denim production as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Drive the circulating grid chain (2) to circulate, control the transmission part (5) to drive the brush roller (3) to move and rotate, and clean the grid (4).

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