Dyeing and printing wastewater biodegradation treatment device with slag scraping structure
By using a dual-scraper synergistic slag scraping structure and an automatic foam collection device, the problem of manually judging and replacing the slag curtain in existing dyeing and printing wastewater treatment devices has been solved. This achieves all-round slag cleaning and automatic foam collection, improving wastewater treatment efficiency and equipment stability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINYI COUNTY XINDELI TEXTILE PRINTING & DYEING CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-16
AI Technical Summary
Existing dyeing and printing wastewater treatment devices require manual judgment to replace the sludge curtain when intercepting large impurities such as fibers, and have limited capacity to treat surface foam and other suspended impurities, resulting in a decrease in wastewater treatment efficiency.
The device employs a dual-scraper collaborative slag scraping structure, combined with an electric telescopic rod and a stepper motor-driven slag scraping mechanism, to achieve all-round slag cleaning. It also automatically collects slag through an inclined foam collection box and a slag discharge pipe, and facilitates easy slag cleaning with a sealed baffle, ensuring stable and efficient operation of the device.
It improves wastewater treatment efficiency, reduces mechanical wear, extends equipment life, lowers maintenance costs, and ensures the continuity and efficiency of wastewater treatment.
Smart Images

Figure CN224362667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and more specifically, to a biodegradation treatment device for dyeing and printing wastewater with a slag scraping structure. Background Technology
[0002] In the textile printing and dyeing industry, printing and dyeing wastewater is the wastewater discharged by printing and dyeing plants that mainly process cotton, linen, chemical fibers and their blended products. Printing and dyeing wastewater is characterized by large volume, complex water quality, high concentration of pollutants and deep color. It is one of the difficult industrial wastewaters to treat. The wastewater contains dyes, sizing agents, auxiliaries, oils, acids and alkalis, fiber impurities, sandy substances, inorganic salts and other components.
[0003] However, because the residual substances in the wastewater have long fibers, directly filtering them through a filter screen will cause the screen to clog too quickly, requiring frequent replacement and cleaning, which will affect the treatment efficiency.
[0004] A search revealed that Chinese Patent CN222076118U discloses a dyeing and printing wastewater treatment device. In this structure, the collection mechanism moves up and down inside the collection tank, causing the sludge curtain installed in the snap-fit plate to scoop up and intercept the fibers in the wastewater. This can intercept large-volume cotton, linen, and other fibers as much as possible. After the collection mechanism rises to the highest liquid level above the wastewater, it can be replaced according to the fiber interception on the sludge curtain to avoid clogging of the subsequent filter screen. Furthermore, the rotating mechanism drives the rotating frame to rotate, and the filter cylinder inside the rotating frame rotates as well, thereby collecting the residual fibers in the wastewater from the filter holes and collecting them inside the filter cylinder, further reducing the amount of residual fiber impurities in the wastewater.
[0005] However, in actual use, this structure intercepts large impurities such as fibers through the sludge curtain, requiring manual judgment to determine when to replace the sludge curtain. Furthermore, it is only effective for intercepting large fibers and has limited capacity to treat surface foam and other suspended impurities, resulting in a significant decrease in the overall wastewater treatment efficiency. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a biodegradation treatment device for dyeing and printing wastewater with a slag scraping structure to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A biodegradation treatment device for dyeing and printing wastewater with a sludge scraping structure includes a treatment tank, a filter plate fixedly installed inside the treatment tank, a fixed frame installed on the top of the treatment tank, and a sludge scraping mechanism installed inside the fixed frame.
[0009] The slag scraping mechanism includes a slider that is slidably disposed inside a fixed frame. A first U-shaped frame is fixedly disposed on the top of the slider, a first scraper is fixedly disposed on the bottom of the first U-shaped frame, and guide blocks are fixedly disposed on both sides of the first scraper. A guide groove is opened on the surface of the treatment tank, and the guide blocks are slidably connected to the guide groove.
[0010] A second U-shaped frame is fixedly installed at the top of the slider, a connecting frame is fixedly installed at the bottom of the second U-shaped frame, and a second scraper is fixedly installed on the surface of the connecting frame.
[0011] By adopting the above technical solution: dual scrapers working together to scrape sludge, it can not only remove floating foam on the water surface, but also push the filter sludge on the filter plate, achieving all-round sludge cleaning, and ensuring smooth scraper movement, thus improving scraping efficiency and reliability.
[0012] As a further description of the above technical solution: multiple electric telescopic rods are embedded in the surface of the treatment pool, the output end of the electric telescopic rods is connected to the fixed frame, a heat dissipation box is fixedly installed on one side of the fixed frame, and multiple heat dissipation holes are opened on the surface of the heat dissipation box;
[0013] A stepper motor is fixedly installed inside the heat sink box. A threaded rod is fixedly provided at the output end of the stepper motor. One of the sliders is threadedly connected to the threaded rod. An installation groove is provided on the surface of the slider. A rotating cylinder is rotatably installed inside the installation groove.
[0014] By adopting the above technical solution, the height of the fixed frame can be precisely adjusted according to the wastewater level and working conditions in the treatment tank, ensuring that the sludge scraping mechanism is always in the best working position, improving the adaptability of the device to different treatment scenarios, and effectively reducing the friction of the slider movement, making the sludge scraping mechanism run smoothly, reducing mechanical wear, and extending the service life of the equipment.
[0015] As a further description of the above technical solution: the surface of the treatment tank is provided with a discharge mechanism, the discharge mechanism includes a foam collection box that runs through the surface of the treatment tank, one side of the foam collection box is inclined, a slag discharge pipe runs through the surface of the foam collection box, and a valve is fixedly provided on one side of the slag discharge pipe.
[0016] A filter cake collection frame is provided through one side of the treatment tank, one end of the filter plate extends into the filter cake collection frame, and a sealing partition is inserted into the filter cake collection frame.
[0017] A handle is fixedly installed on one side of the sealing partition, and an L-shaped limiting plate is inserted into one side of the filter cake collection frame. The L-shaped limiting plate and the handle are connected by bolts. An aerator is fixedly installed inside the treatment tank. A drain pipe is fixedly installed on one side of the treatment tank, and a stop valve is fixedly installed on one side of the drain pipe.
[0018] By adopting the above technical solution, the foam can be automatically collected and discharged using water flow and gravity. The valve allows for flexible control of the discharge, preventing foam accumulation from affecting the treatment environment and efficiency. Furthermore, the handle enables quick disassembly and cleaning, ensuring sealing, preventing wastewater leakage, and simplifying the maintenance process.
[0019] The technical effects and advantages of this utility model are as follows:
[0020] 1. By setting up a sludge scraping mechanism, compared with existing technologies, the height can be flexibly adjusted. The electric telescopic rod can precisely adjust the height of the fixed frame according to the wastewater level in the treatment tank and the sludge scraping requirements, adapting to different working conditions and ensuring the sludge scraping effect. Moreover, it efficiently scrapes away sludge. The slider drives the first and second scrapers to move under the drive of the threaded rod. The two work together to not only scrape the foam on the water surface to the edge for collection, but also push the filter sludge on the filter plate into the collection frame, achieving all-round sludge cleaning. In addition, the operation is stable and reliable. The guide block and guide groove cooperate, and the rotating drum assists the slider to slide, ensuring the smooth movement of the scraper, reducing mechanical wear, extending service life, optimizing the treatment process, and timely removing sludge to avoid accumulation that affects biodegradation, ensuring microbial activity, improving wastewater treatment efficiency and quality, and reducing maintenance costs, with good economic and environmental benefits.
[0021] 2. By setting up a discharge mechanism, compared with existing technologies, this method achieves highly efficient foam treatment. The inclined foam collection box works in conjunction with the slag discharge pipe, utilizing water flow and gravity to automatically collect and discharge foam. The valve allows operators to flexibly control the discharge, preventing foam accumulation from affecting the wastewater treatment environment. Moreover, it facilitates easy filter cake cleaning. The filter cake collection frame is equipped with a pull-out sealing partition. During cleaning, simply pull the handle to remove the partition. The operation is simple. After cleaning, the L-shaped limit plate is fixed to the handle bolt to ensure sealing and prevent wastewater leakage and pollution. In addition, the closed-loop process is guaranteed. The discharge mechanism is closely connected with the slag scraping mechanism and biodegradation, ensuring timely discharge of slag. This creates favorable conditions for efficient oxygen supply to the aerator and microbial degradation, ensuring smooth operation of the entire wastewater treatment process, improving overall treatment efficiency, reducing manual maintenance costs, and combining practicality and economy. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0023] Figure 2 This is a schematic diagram of the overall frontal cross-sectional structure of this utility model.
[0024] Figure 3 This is a cross-sectional structural diagram of the slag scraping mechanism of this utility model.
[0025] Figure 4 This is a schematic diagram of the overall side cross-sectional structure of this utility model.
[0026] Figure 5 This is a schematic diagram of the material discharge mechanism of this utility model.
[0027] The attached figures are labeled as follows: 1. Treatment tank; 2. Filter plate; 3. Fixing frame; 4. Slider; 5. First U-shaped frame; 6. First scraper; 7. Guide block; 8. Second U-shaped frame; 9. Connecting frame; 10. Second scraper; 11. Electric telescopic rod; 12. Heat dissipation box; 13. Threaded rod; 14. Rotary drum; 15. Foam collection box; 16. Slag discharge pipe; 17. Valve; 18. Filter slag collection frame; 19. Sealing partition; 20. Handle; 21. L-shaped limiting plate; 22. Aerator; 23. Drain pipe. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] The embodiments disclosed in this application are as follows: Figure 1-5 The illustrated dyeing and printing wastewater biodegradation treatment device includes a treatment tank 1, a filter plate 2 fixedly installed inside the treatment tank 1, a fixed frame 3 installed on the top of the treatment tank 1, and a scraping mechanism installed inside the fixed frame 3.
[0030] The slag scraping mechanism includes a slider 4 that is slidably disposed inside the fixed frame 3. A first U-shaped frame 5 is fixedly disposed on the top of the slider 4. A first scraper 6 is fixedly disposed on the bottom of the first U-shaped frame 5. Guide blocks 7 are fixedly disposed on both sides of the first scraper 6. A guide groove is opened on the surface of the treatment tank 1. The guide blocks 7 are slidably connected to the guide groove.
[0031] A second U-shaped frame 8 is fixedly installed on the top of the slider 4, a connecting frame 9 is fixedly installed on the bottom of the second U-shaped frame 8, and a second scraper 10 is fixedly installed on the surface of the connecting frame 9.
[0032] As the slider 4 slides within the fixed frame 3, the first U-shaped frame 5 and the second U-shaped frame 8, which are fixedly mounted on the top of the slider 4, move along with it. The first scraper 6 at the bottom of the first U-shaped frame 5 and the second scraper 10, which are fixed to the second U-shaped frame 8 by the connecting bracket 9, also move together.
[0033] The guide blocks 7 on both sides of the first scraper 6 slide in the guide grooves opened on the surface of the treatment tank 1, which play a guiding and stabilizing role, ensuring that the scraper moves smoothly. The first scraper 6 gradually scrapes the sludge floating on the surface of the treatment tank 1 towards the edge of the treatment tank 1. The movement of the second scraper 10 moves the filter residue intercepted on the filter plate 2 towards the filter residue collection frame 18. The structure of one end of the filter plate 2 extending into the filter residue collection frame 18 facilitates the smooth sliding and collection of the filter residue.
[0034] Reference Figure 2-3 As shown, multiple electric telescopic rods 11 are embedded in the surface of the treatment pool 1. The output end of the electric telescopic rod 11 is connected to the fixed frame 3. A heat dissipation box 12 is fixedly installed on one side of the fixed frame 3. Multiple heat dissipation holes are opened on the surface of the heat dissipation box 12.
[0035] A stepper motor is fixedly installed inside the heat sink box 12. A threaded rod 13 is fixedly provided at the output end of the stepper motor. One of the sliders 4 is threadedly connected to the threaded rod 13. An installation groove is provided on the surface of the slider 4. A rotating cylinder 14 is rotatably provided inside the installation groove.
[0036] Based on the wastewater level in treatment tank 1 and the sludge scraping requirements, multiple electric telescopic rods 11 embedded in the surface of treatment tank 1 are activated. Their output ends push or pull the fixed frame 3, adjusting the fixed frame 3 to a suitable height position. Then, the stepper motor inside the heat sink box 12 is turned on, and the output end of the stepper motor drives the threaded rod 13 to rotate. Since one of the sliders 4 is threadedly connected to the threaded rod 13, when the threaded rod 13 rotates, the slider 4 begins to slide inside the fixed frame 3. The rotating cylinder 14 in the mounting groove on the surface of the slider 4 rotates accordingly, assisting the slider 4 to slide smoothly inside the fixed frame 3, preparing for the sludge scraping operation.
[0037] Reference Figure 4-5 As shown, a discharge mechanism is provided on the surface of the treatment tank 1. The discharge mechanism includes a foam collection box 15 that is disposed through the surface of the treatment tank 1. One side of the foam collection box 15 is inclined. A slag discharge pipe 16 is disposed through the surface of the foam collection box 15. A valve 17 is fixedly disposed on one side of the slag discharge pipe 16.
[0038] A filter cake collection frame 18 is provided through one side of the treatment tank 1, and one end of the filter plate 2 extends into the filter cake collection frame 18. A sealing partition 19 is inserted into the filter cake collection frame 18.
[0039] A handle 20 is fixedly installed on one side of the sealing partition 19, and an L-shaped limiting plate 21 is inserted into one side of the filter cake collection frame 18. The L-shaped limiting plate 21 and the handle 20 are connected by bolts. An aerator 22 is fixedly installed inside the treatment tank 1. A drain pipe 23 is fixedly installed on one side of the treatment tank 1, and a stop valve is fixedly installed on one side of the drain pipe 23.
[0040] The foam scraped to the edge of the treatment tank 1 by the scraper enters the foam collection box 15 that runs through the top of the treatment tank 1 with the help of the water flow and its own gravity. Since one side of the foam collection box 15 is designed to be inclined, the foam can slide in smoothly and then be discharged from the treatment tank 1 through the slag discharge pipe 16 that runs through its surface. The operator can control the opening and closing of the foam discharge and adjust the flow rate by controlling the valve 17 that is fixedly installed on one side of the slag discharge pipe 16.
[0041] When the filter residue in the filter residue collection frame 18 accumulates to a certain amount and needs to be cleaned, the operator pulls the handle 20 on one side of the sealing partition 19 to pull the sealing partition 19 out of the filter residue collection frame 18. After cleaning the filter residue, the sealing partition 19 is inserted back into its original position. Then, the L-shaped limiting plate 21 is inserted into one side of the filter residue collection frame 18 and fixedly connected to the handle 20 with bolts to ensure that the sealing partition 19 is installed firmly and to prevent wastewater leakage.
[0042] The aerator 22, which is fixedly installed inside the treatment tank 1, works continuously to provide sufficient oxygen for the microorganisms in the biodegradation zone, promoting the decomposition and metabolism of organic pollutants in the wastewater, thereby achieving the biodegradation treatment of the dyeing and printing wastewater and improving the purification level of the wastewater. The operator opens the stop valve on one side of the drain pipe 23 fixedly installed on one side of the treatment tank 1, and the treated wastewater is discharged from the treatment tank 1 through the drain pipe 23, completing the entire treatment of dyeing and printing wastewater.
[0043] Working principle of this utility model:
[0044] This utility model is a biodegradation treatment device for dyeing and printing wastewater with a slag scraping structure. The dyeing and printing wastewater is transported to the treatment tank 1 through a pipeline. The wastewater flows downward under the action of gravity and first passes through the filter plate 2 fixedly installed inside the treatment tank 1. The filter plate 2 intercepts larger particles of impurities in the wastewater. These impurities are blocked on the filter plate 2, and the filtered wastewater continues to flow downward through the pores of the filter plate 2. Then, the electric telescopic rod 11, the stepper motor and the external power supply are connected to prepare for the subsequent biodegradation process.
[0045] Then, based on the wastewater level in treatment tank 1 and the sludge scraping requirements, multiple electric telescopic rods 11 embedded in the surface of treatment tank 1 are activated. Their output ends push or pull the fixed frame 3 to adjust the fixed frame 3 to a suitable height position. Next, the stepper motor inside the heat sink box 12 is turned on, and the output end of the stepper motor drives the threaded rod 13 to rotate. Since one of the sliders 4 is threadedly connected to the threaded rod 13, when the threaded rod 13 rotates, the slider 4 begins to slide inside the fixed frame 3. The rotating cylinder 14 in the mounting groove on the surface of the slider 4 rotates accordingly, assisting the slider 4 to slide smoothly inside the fixed frame 3, preparing for the sludge scraping operation.
[0046] As the slider 4 slides within the fixed frame 3, the first U-shaped frame 5 and the second U-shaped frame 8, which are fixedly mounted on the top of the slider 4, move along with it. The first scraper 6 at the bottom of the first U-shaped frame 5 and the second scraper 10, which are fixed to the second U-shaped frame 8 by the connecting bracket 9, also move together.
[0047] The guide blocks 7 on both sides of the first scraper 6 slide in the guide grooves opened on the surface of the treatment tank 1, which play a guiding and stabilizing role, ensuring that the scraper moves smoothly. The first scraper 6 gradually scrapes the slag floating on the surface of the treatment tank 1 towards the edge of the treatment tank 1.
[0048] The foam scraped to the edge of the treatment tank 1 by the scraper enters the foam collection box 15 that runs through the top of the treatment tank 1 with the help of the water flow and its own gravity. Since one side of the foam collection box 15 is designed to be inclined, the foam can slide in smoothly and then be discharged from the treatment tank 1 through the slag discharge pipe 16 that runs through its surface. The operator can control the opening and closing of the foam discharge and adjust the flow rate by controlling the valve 17 that is fixedly installed on one side of the slag discharge pipe 16.
[0049] The movement of the second scraper 10 moves the filter residue intercepted on the filter plate 2 toward the filter residue collection frame 18. The structure of one end of the filter plate 2 extending into the filter residue collection frame 18 facilitates the smooth sliding and collection of the filter residue. When the filter residue in the filter residue collection frame 18 accumulates to a certain amount and needs to be cleaned, the operator pulls the handle 20 on one side of the sealing partition 19 to pull the sealing partition 19 out of the filter residue collection frame 18. After cleaning the filter residue, the sealing partition 19 is inserted back into its original position. Then, the L-shaped limiting plate 21 is inserted into one side of the filter residue collection frame 18 and fixedly connected to the handle 20 with bolts to ensure that the sealing partition 19 is installed firmly and to prevent wastewater leakage.
[0050] The aerator 22, which is fixedly installed inside the treatment tank 1, works continuously and is connected to an external air source through a pipe to introduce air into the wastewater in the treatment tank 1. The air diffuses into the wastewater in the form of tiny bubbles, providing sufficient oxygen for the microorganisms in the biodegradation zone, promoting the decomposition and metabolism of organic pollutants in the wastewater by the microorganisms, thereby achieving the biodegradation treatment of dyeing and printing wastewater and improving the purification level of the wastewater.
[0051] After a series of treatment processes including preliminary filtration, sludge scraping, and biodegradation, the wastewater that meets the discharge standards accumulates to a certain level in treatment tank 1. At this point, the operator opens the stop valve on one side of the drain pipe 23 fixed on one side of treatment tank 1, and the treated wastewater is discharged from treatment tank 1 through the drain pipe 23, thus completing the entire treatment of dyeing and printing wastewater.
[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure, comprising a treatment tank (1), characterized in that: A filter plate (2) is fixedly installed inside the treatment tank (1), a fixed frame (3) is installed on the top of the treatment tank (1), and a slag scraping mechanism is installed inside the fixed frame (3). The slag scraping mechanism includes a slider (4) that is slidably disposed inside the fixed frame (3). A first U-shaped frame (5) is fixedly disposed on the top of the slider (4). A first scraper (6) is fixedly disposed on the bottom of the first U-shaped frame (5). Guide blocks (7) are fixedly disposed on both sides of the first scraper (6). A guide groove is opened on the surface of the treatment tank (1). The guide block (7) is slidably connected to the guide groove. The top of the slider (4) is fixedly provided with a second U-shaped frame (8), the bottom of the second U-shaped frame (8) is fixedly provided with a connecting frame (9), and the surface of the connecting frame (9) is fixedly provided with a second scraper (10).
2. The biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure according to claim 1, characterized in that: Multiple electric telescopic rods (11) are embedded in the surface of the treatment pool (1). The output end of the electric telescopic rod (11) is connected to the fixed frame (3). A heat dissipation box (12) is fixedly installed on one side of the fixed frame (3). Multiple heat dissipation holes are opened on the surface of the heat dissipation box (12).
3. The biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure according to claim 2, characterized in that: A stepper motor is fixedly installed inside the heat sink box (12). A threaded rod (13) is fixedly provided at the output end of the stepper motor. One of the sliders (4) is threadedly connected to the threaded rod (13). An installation groove is provided on the surface of the slider (4). A rotating cylinder (14) is rotatably provided inside the installation groove.
4. The biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure according to claim 1, characterized in that: The surface of the treatment tank (1) is provided with a discharge mechanism, which includes a foam collection box (15) that runs through the surface of the treatment tank (1). One side of the foam collection box (15) is inclined. A slag discharge pipe (16) runs through the surface of the foam collection box (15). A valve (17) is fixedly provided on one side of the slag discharge pipe (16).
5. The biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure according to claim 4, characterized in that: A filter cake collection frame (18) is provided through one side of the treatment tank (1), and one end of the filter plate (2) extends into the filter cake collection frame (18). A sealing partition (19) is inserted into the filter cake collection frame (18).
6. The biodegradation treatment device for dyeing and printing wastewater with a slag-scraping structure according to claim 5, characterized in that: A handle (20) is fixedly provided on one side of the sealing partition (19), and an L-shaped limiting plate (21) is inserted into one side of the filter residue collection frame (18). The L-shaped limiting plate (21) and the handle (20) are connected by bolts. An aerator (22) is fixedly installed inside the treatment tank (1), and a drain pipe (23) is fixedly installed on one side of the treatment tank (1). A stop valve is fixedly installed on one side of the drain pipe (23).