Complete equipment for treating printing and dyeing wastewater for reuse

Abstract

The present application relates to sewage treatment equipment technical field, especially printing and dyeing sewage reuse treatment complete equipment. Including the shell, the shell one side is provided with water injection module and dosing module, the shell is fixedly connected with first baffle, second baffle, deslagging table and third baffle arranged in sequence in, the shell is provided with several groups of aeration pipe, the shell is provided with transmission module, the transmission module is provided with connecting plate, the transmission module is used to drive the connecting plate moves, the connecting plate is fixedly connected with the deslagging plate, the deslagging plate is limit sliding connection with moving plate. The present application is through moving plate in the process of moving with deslagging plate relative to deslagging plate downwardly extends, improves the depth of deslagging plate under the liquid surface, reduces the probability of accumulated light flocculent impurities from the bottom of deslagging plate backflow to the liquid, guarantees the thoroughness of single scraping, improves the overall treatment efficiency of sewage.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a complete set of equipment for the reuse and treatment of dyeing and printing wastewater. Background Technology

[0002] The dyeing and printing industry is a major consumer of industrial water in my country. Dyeing and printing wastewater is characterized by large volume, high concentration of organic pollutants, high color, significant water quality variations, and complex composition, making it one of the more difficult types of industrial wastewater to treat. Among the various technologies for treating dyeing and printing wastewater reuse, air flotation separation technology has become an indispensable and important process unit in the pretreatment and fine treatment stages of dyeing and printing wastewater before reuse due to its advantages such as high removal efficiency of light suspended solids, colloidal and oily pollutants, and low cost.

[0003] Existing dissolved air flotation (DAF) equipment generally includes a DAF tank, a dissolved air release system, and a scum scraper. The scum scraper is the key component for separating and discharging scum, typically consisting of a drive unit, a transmission chain, and multiple circulating scraper blades. These blades move along the liquid surface, scraping the scum from the water surface into the scum tank. However, in actual operation, existing scum scraper devices generally suffer from the following technical defects: When the scum is being scraped, the scum is pushed by the scraper. However, due to the thickness and fluidity of the scum layer, some scum gradually accumulates on the scraper surface. As the scraping process continues, the volume of scum accumulated on one side of the scraper increases. When the accumulation height exceeds the effective scum-blocking height between the lower end of the scraper and the liquid surface, some scum will pass under the scraper and re-enter the water, affecting the overall cleaning efficiency of the flotation device for wastewater. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a complete set of equipment for the reuse and treatment of dyeing and printing wastewater.

[0005] Technical Solution: A complete set of equipment for the reuse and treatment of dyeing and printing wastewater includes an outer shell. A water injection module and a chemical dosing module are installed on one side of the outer shell. A first partition, a second partition, a slag removal platform, and a third partition are sequentially arranged inside the outer shell. Several sets of aeration pipes are installed inside the outer shell, with each set containing a uniformly distributed number of aeration pipes. The aeration pipes are located between the second partition and the slag removal platform. A transmission module is installed on the outer shell, and the transmission module has a connecting plate. The transmission module is used to drive the connecting plate to move. A slag scraper is fixedly connected to the connecting plate. The slag scraper is slidably connected to a moving plate, and a return spring is fixedly connected between the moving plate and the slag scraper.

[0006] Furthermore, it is particularly preferred that the movable plate is made of an elastic, deformable material, and the slag removal platform is located on the moving path of the movable plate.

[0007] Furthermore, it is particularly preferred that the movable plate is fixedly connected to symmetrically distributed movable rods, the movable rods are slidably connected to the corresponding scraper plates, and the housing is provided with symmetrically distributed limiting grooves, the movable rods sliding within the corresponding limiting grooves.

[0008] Furthermore, it is particularly preferred that the limiting groove is composed of an inlet, an inclined portion, and an outlet portion connected in sequence, wherein the inclined portion is inclined downward in the direction from the inlet to the outlet portion, and the inclined portion is used to limit the corresponding moving rod.

[0009] Furthermore, particularly preferably, it also includes an air inlet pipe, which is fixedly connected to one side of the outer shell. The air inlet pipe is fixedly connected to and connected to a number of branch pipes equal to the number of aeration pipe groups. The branch pipes pass through the outer shell and are fixedly connected to it. The branch pipes are connected to a corresponding group of aeration pipes. The branch pipes are fixedly connected to and connected to a connecting pipe. The connecting pipe is slidably and sealingly connected to a movable shell. A blocking rod is fixedly connected inside the movable shell. The blocking rod is slidably and sealingly connected to the connecting pipe. The blocking rod is used to change the flow area of ​​the corresponding branch pipe. A return spring is fixedly connected between the connecting pipe and the corresponding movable shell.

[0010] Furthermore, it is particularly preferred that a movable block is fixedly connected to the upper side of the movable shell, a connecting rod is fixedly connected to the connecting plate, a pressing block is fixedly connected to the connecting rod, and the pressing block is provided with an inclined surface for pressing the movable block.

[0011] Furthermore, it is particularly preferred that the device also includes a fixing frame, which is fixedly connected to the outer shell. The projection of the fixing frame onto the horizontal plane is located between the third partition and the slag removal platform. The fixing frame is rotatably connected to a drive shaft, which has symmetrically distributed external threads. The drive shaft is threadedly connected to symmetrically distributed mounting blocks through its external threads. The mounting blocks are slidably connected to the fixing frame. The mounting blocks are fixedly connected to an electric slide rail, which has an electric slider. The electric slider is fixedly connected to a limit block, which is fixedly connected to symmetrically distributed fixing plates. A pressing plate is provided on the fixing plate near the first partition, and the pressing plate is used to press the corresponding moving rod.

[0012] Furthermore, it is particularly preferred that the fixed plate is provided with a positioning plate, and the fixed plate is provided with a first driving module and a second driving module for driving the extrusion plate and the positioning plate to move respectively. The slag scraper is fixedly connected with symmetrically distributed fixed rods and symmetrically distributed positioning rods. The fixed rods and the positioning rods are respectively located on both sides of the corresponding moving rods. The limiting block is used to limit the corresponding fixed rod, and the positioning plate is used to limit the corresponding positioning rod.

[0013] Furthermore, it is particularly preferred that the scraper is made of an elastic, deformable material and that the scraper is arc-shaped.

[0014] Furthermore, it is particularly preferred that the device also includes an electric push rod, which is fixed to the side of the housing near the first partition. The housing is slidably connected to two symmetrically distributed movable frames, which are slidably connected to a push plate. The push plate is in contact with the first partition. The telescopic end of the electric push rod is slidably connected to the push plate through a mounting bracket. The movable frame is provided with a third drive module, and the third drive modules on the two movable frames are used together to drive the push plate to move.

[0015] The present invention has the following advantages: the moving plate extends downward relative to the scraper plate as it moves with the scraper plate, thereby increasing the depth of the scraper plate below the liquid surface, reducing the probability of accumulated light flocculent impurities flowing back into the liquid from the bottom of the scraper plate, ensuring the thoroughness of a single scraping, and improving the overall wastewater treatment efficiency.

[0016] By squeezing the moving block with the squeezing block, the gas supply to the corresponding diversion pipe is reduced in advance, weakening the vertical disturbance and horizontal diffusion flow of the liquid surface during the rising of aeration bubbles, ensuring the stability of the liquid surface during the slag scraping operation, thereby reducing the probability that the accumulated light flocculent slag will sink again or drift to the surroundings due to the rolling of bubbles, and improving the efficiency of a single scraping. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the outer casing of the present invention; Figure 3 This is a three-dimensional structural diagram of the intake pipe and the splitter pipe of the present invention; Figure 4 This is a three-dimensional structural diagram of the transmission module and the slag scraper of the present invention; Figure 5 This is a three-dimensional structural diagram of the connecting plate and the slag scraper of the present invention; Figure 6 This is a three-dimensional structural cross-sectional view of the slag scraper of the present invention; Figure 7 This is a three-dimensional structural diagram of the inlet and inclined portion of the present invention; Figure 8 This is a three-dimensional sectional view of the connecting pipe of the present invention; Figure 9 This is a three-dimensional structural diagram of the drive shaft and mounting block of the present invention; Figure 10 This is a three-dimensional structural diagram of the limiting block of the present invention in its working state; Figure 11 This is a three-dimensional structural diagram of the electric push rod and push plate of the present invention; Figure 12 This is a three-dimensional structural diagram of the first partition and push plate of the present invention.

[0018] In the diagram: 1. Outer shell, 2. First partition, 3. Second partition, 4. Third partition, 401. Slag removal platform, 402. Aeration pipe, 5. Transmission module, 6. Connecting plate, 7. Slag scraper, 8. Moving plate, 9. Reset spring, 10. Moving rod, 11. Limiting groove, 111. Inlet, 112. Inclined part, 113. Outlet, 12. Air inlet pipe, 13. Diverter pipe, 14. Connecting pipe, 15. Moving shell, 16. Blocking rod, 17. Reset spring, 18. Moving block, 19. Connecting rod, 20. Extrusion block, 21. Fixing frame, 22. Drive shaft, 23. Mounting block, 24. Electric slide rail, 25. Electric slider, 26. Limiting block, 27. Fixing plate, 28. Extrusion plate, 29. Positioning plate, 30. Fixing rod, 31. Positioning rod, 32. Electric push rod, 33. Moving frame, 34. Push plate. Detailed Implementation

[0019] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Example 1

[0020] Considering the problem that in the process of treating dyeing and printing wastewater, when the existing air flotation device is cleaning up the scum, the scum accumulated on one side of the scraper plate will pass over the bottom of the scraper plate and re-enter the water body, which affects the overall cleaning efficiency of the air flotation device for wastewater, this embodiment provides a complete set of equipment for the reuse and treatment of dyeing and printing wastewater.

[0021] like Figures 1-6As shown, the device includes a shell 1, an aeration pipe 402, and a slag removal platform 401. A water injection module and a chemical dosing module are provided on one side of the shell 1. A first partition 2, a second partition 3, a slag removal platform 401, and a third partition 4 are fixedly connected inside the shell 1 in sequence. Several sets of aeration pipes 402 are provided inside the shell 1, with several aeration pipes 402 evenly distributed in each set. The aeration pipes 402 are located between the second partition 3 and the slag removal platform 401. A transmission module 5 is provided on the shell 1. The transmission module 5 is provided with a connecting plate 6. The transmission module 5 is used to drive the connecting plate 6 to move. A slag scraper 7 is fixedly connected to the connecting plate 6. The slag scraper 7 is slidably connected to a moving plate 8. A reset tension spring 9 is fixedly connected between the moving plate 8 and the slag scraper 7. The slag removal platform 401 is located on the moving path of the moving plate 8.

[0022] In the above scheme, a slag removal module (existing device, not shown in the figure) is set at the bottom of the outer shell 1 to clean large-volume impurities inside the outer shell 1; the water injection module and the chemical dosing module are both located on the left side of the outer shell 1, and both are existing devices, and their specific working processes will not be described in detail in this article; the first partition 2, the second partition 3, the third partition 4, and the slag removal platform 401 cooperate to divide the interior of the outer shell 1 into five chambers, which are, from left to right, a chemical dosing chamber, a flow guiding chamber, an air flotation chamber, a slag removal chamber, and a sewage discharge chamber. The sewage discharge chamber is used to discharge the treated wastewater and is connected to the air flotation chamber through a pipe; the specific number of aeration pipes 402 is selected by the staff and will not be described in detail. The aeration pipes 402 are connected to the external water supply... The gas device is connected to inject gas into the outer casing 1; the transmission module 5 consists of two symmetrically distributed connecting shafts, two symmetrically distributed sprockets on each connecting shaft, and two chains wound around two adjacent sprockets on different connecting shafts; during normal use, in order to improve the efficiency of sewage treatment, the number of connecting plates 6 can be set to multiple, but one is used as an example in the figure and text; the scraper plate 7 is located on the side of the connecting plate 6 away from the transmission module 5. When the scraper plate 7 is located below the transmission module 5, the lower side of the scraper plate 7 is not lower than the upper side of the slag removal platform 401; the moving plate 8 is used to increase the coverage area of ​​the scraper plate 7 on the vertical plane after moving downward; the return spring 9 is always in a stored state to improve the stability of the position of the moving plate 8.

[0023] like Figure 6 As shown, the movable plate 8 is made of an elastic deformable material, and the slag removal platform 401 is located on the moving path of the movable plate 8, so that the movable plate 8 is deformed by the pressure of the slag removal platform 401 during the movement, thereby increasing the adhesion between the two and reducing the probability that impurities on the right side of the movable plate 8 will flow back into the liquid along the gap between it and the slag removal platform 401.

[0024] like Figures 2-7As shown, the movable plate 8 is fixedly connected to symmetrically distributed movable rods 10, and the movable rods 10 are slidably connected to the corresponding scraper plate 7. The outer shell 1 is provided with symmetrically distributed limiting grooves 11, and the movable rods 10 slide within the corresponding limiting grooves 11.

[0025] In the above scheme, the moving rods 10 on the moving plate 8 are symmetrically distributed front and back. Under normal conditions, the moving rods 10 are located in the limiting groove 11, and the moving plate 8 is located below the transmission module 5. The limiting groove 11 is only an example in the figure. In order to ensure the normal movement of the moving rods 10, the limiting groove 11 can be appropriately widened in actual use.

[0026] like Figure 7 As shown, the limiting groove 11 is composed of an inlet 111, an inclined section 112 and an outlet 113 connected in sequence. The inclined section 112 is inclined downward from the inlet 111 to the outlet 113 and is used to limit the corresponding moving rod 10.

[0027] In the above scheme, the inlet 111 and the outlet 113 are located on the left and right sides of the slag removal platform 401, respectively. When the moving rod 10 moves to the right along the inclined part 112, the moving rod 10 drives the moving plate 8 to move downward gradually.

[0028] The specific workflow of the above scheme is as follows: When this equipment is needed to treat dyeing and printing wastewater, the staff injects the pretreated wastewater and chemicals (coagulant and flocculant) into the dosing chamber through the water injection module. This causes the impurities in the wastewater to coagulate with the chemicals to form flocs. Then, the mixture of wastewater and chemicals (hereinafter referred to as the liquid) enters the guide chamber and flows into the flotation chamber. At this time, the staff activates the external air supply device to fill the aeration pipe 402 with gas, thereby aerating the flotation chamber. This causes the light flocculent impurities that have been coagulated to float to the surface of the liquid. During this process, the denser heavy impurities settle to the bottom of the outer shell 1 and are cleaned by the slag removal module at the bottom of the outer shell 1.

[0029] After the impurities float to the surface, the operator activates the transmission module 5, which drives the connecting plate 6 to move to the right. The connecting plate 6 then moves the scraper plate 7, which scrapes away the impurities floating on the surface and causes them to accumulate on the right side of the scraper plate 7. As the scraper plate 7 moves, it drives the moving plate 8 inside it to move synchronously. The moving plate 8 drives the two moving rods 10 on it to move along the inclined part 112 of the corresponding limiting groove 11, so that the moving plate 8 moves downward synchronously as it moves to the right, and stretches the two reset springs 9, thereby increasing the coverage height of the scraper plate 7 and reducing the probability that the impurities accumulated on the right side of the scraper plate 7 will cross the bottom of the scraper plate 7 and re-enter the sewage.

[0030] As the moving plate 8 moves to the right, its lower edge gradually contacts the slag removal platform 401 (at this time, the moving rod 10 is located inside the inclined part 112), and undergoes elastic deformation under the pushing force of the slag removal platform 401, so that the two fit tightly together, reducing the probability of impurity backflow. When the moving rod 10 moves to the outlet part 113, the limiting groove 11 no longer limits the moving rod 10. At the same time, the scraper plate 7 moves to the right side of the slag removal platform 401. At this time, the moving plate 8 moves upward along the scraper plate 7 under the action of the two reset springs 9, so that the impurities accumulated on the right side of the scraper plate 7 and the moving plate 8 fall downward into the slag removal chamber. Then, the transmission module 5 drives the scraper plate 7 to continue moving to the right.

[0031] When the connecting plate 6 moves to the right and aligns vertically with the central axis of the right sprocket of the transmission module 5, the transmission module 5 drives the scraper plate 7 to rotate counterclockwise (to...). Figure 1 (Based on the perspective of the main view), during this process, the moving plate 8 gradually moves out of the limiting groove 11, causing the scraper plate 7 to gradually rotate from downward to upward. When the scraper plate 7 is above the transmission module 5, the transmission module 5 drives the scraper plate 7 to move to the left. When the connecting plate 6 moves to align with the central axis of the left sprocket on the transmission module 5, the transmission module 5 drives the scraper plate 7 to rotate counterclockwise (causing the scraper plate 7 to gradually rotate to the lower side of the transmission module 5), and causes the moving rod 10 to gradually enter the inlet 111. When the scraper plate 7 is below the transmission module 5, the moving rod 10 is located at the junction of the inlet 111 and the inclined part 112. Subsequently, the transmission module 5 drives the scraper plate 7 to move to the right, and causes the moving rod 10 to move synchronously along the inlet 111, continuing to scrape and clean the impurities floating on the liquid surface. This cycle is repeated to achieve continuous treatment of sewage. Example 2

[0032] Based on Example 1, this example further optimizes the complete set of equipment for the reuse and treatment of dyeing and printing wastewater.

[0033] like Figures 2-5 and Figure 8 As shown, it also includes an air inlet pipe 12, which is fixed to one side of the outer shell 1. The air inlet pipe 12 is fixedly connected to and connected to a number of diverter pipes 13, which are the same as the number of aeration pipes 402. The diverter pipes 13 pass through the outer shell 1 and are fixedly connected to it. The diverter pipes 13 are connected to a corresponding group of aeration pipes 402. The diverter pipes 13 are fixedly connected to and connected to a connecting pipe 14. The connecting pipe 14 is slidably connected to a movable shell 15. A baffle rod 16 is fixedly connected inside the movable shell 15. The baffle rod 16 is slidably connected to the connecting pipe 14. The baffle rod 16 is used to change the flow area of ​​the corresponding diverter pipe 13. A return spring 17 is fixedly connected between the connecting pipe 14 and the corresponding movable shell 15.

[0034] In the above scheme, the air intake pipe 12 is located on the rear side of the outer casing 1. In this embodiment, the air intake pipe 12 is used to connect to an external air supply device. The connecting pipe 14 is located above the corresponding diverter pipe 13, and the movable shell 15 is located above the connecting pipe 14. The connecting pipe 14 consists of a straight pipe and an upper annular portion, wherein the straight pipe and the movable shell 15 are in a sealed sliding connection, and the annular portion and the movable shell 15 are not in a sealed relationship. The length of the blocking rod 16 is greater than the length of the connecting pipe 14. Under normal conditions, the lower side of the blocking rod 16 is flush with the upper side of the inner wall of the diverter pipe 13. Figure 7 This is the state after the blocking rod 16 has moved; the return spring 17 is always in a charged state to improve the stability of the moving shell 15.

[0035] like Figure 4 and Figure 5 As shown, a movable block 18 is fixedly connected to the upper side of the movable shell 15, a connecting rod 19 is fixedly connected to the connecting plate 6, and a pressing block 20 is fixedly connected to the connecting rod 19. The pressing block 20 is provided with an inclined surface for pressing the movable block 18.

[0036] In the above scheme, the projection of the moving block 18 on the vertical plane is a right trapezoid, and its inclined surface is inclined upward from left to right. The connecting rod 19 is located at the rear end of the connecting plate 6. When the scraper plate 7 is located below the transmission module 5, the inclined surface on the extrusion block 20 is inclined upward from left to right, and the right side of the extrusion block 20 is located to the right of the scraper plate 7, ensuring that the moving block 18 has moved downward to the limit position before the scraper plate 7 passes through the area covered by the aeration pipe 402.

[0037] The specific workflow of the above scheme is as follows: As the connecting plate 6 moves to the right, the connecting plate 6 drives the squeezing block 20 to move to the right synchronously via the connecting rod 19. When the inclined surface on the squeezing block 20 contacts the inclined surface on the left side of the leftmost moving block 18, the squeezing block 20 squeezes the moving block 18 as it continues to move to the right. This causes the moving block 18 to be compressed, which in turn drives the corresponding moving shell 15 to move downward synchronously, compressing the corresponding reset spring 17. The moving shell 15 then drives the corresponding blocking rod 16 to move downward, blocking the corresponding diversion pipe 13. This reduces the flow area of ​​the diversion pipe 13, thereby reducing the gas velocity and air output of the set of aeration pipes 402 connected to the diversion pipe 13. This weakens the disturbance of the water body by the gas in the area covered by the set of aeration pipes 402, thus ensuring the stability of the liquid in the area covered by the scraper plate 7 when it passes through the area covered by the set of aeration pipes 402. This keeps the impurity layer that was originally gathered in the area relatively still, reducing the probability of scum sinking or dispersing due to the flow of liquid and improving the overall scraping efficiency.

[0038] During the downward movement of the moving block 18, when the horizontal surface on the upper side of the moving block 18 contacts the lower side of the extrusion block 20, the moving block 18 moves downward to its limit position, and the flow path of the corresponding diversion pipe 13 is reduced to the minimum. The scraper 7 is located on the left side of the diversion pipe 13. During the movement of the scraper 7 to the right, the moving block 18 remains at the lowest position until the lower left edge of the extrusion block 20 moves to contact the inclined surface on the right side of the moving block 18 (the scraper 7 is already located on the right side of the corresponding diversion pipe 13). As the extrusion block 20 continues to move to the right, the extrusion pressure of the extrusion block 20 on the moving block 18 gradually decreases. Under the action of the corresponding return spring 17, the moving block 18 drives the corresponding moving shell 15 to gradually return upward until the extrusion block 20 loses contact with the moving block 18 (at the same time, the inclined surface of the extrusion block 20 contacts the inclined surface on the left side of the second moving block 18 on the left). The moving block 18 returns upward to its initial position for subsequent use. The movement process of the remaining moving blocks 18 can be referred to the movement process of the leftmost moving block 18 mentioned above. Example 3

[0039] Based on Example 2, this example further optimizes the complete set of equipment for the reuse and treatment of dyeing and printing wastewater.

[0040] like Figures 1-4 , Figure 9 and Figure 10 As shown, it also includes a fixing frame 21, which is fixed to the outer shell 1. The projection of the fixing frame 21 on the horizontal plane is located between the third partition 4 and the slag removal platform 401. The fixing frame 21 is rotatably connected to a drive shaft 22. The drive shaft 22 is provided with symmetrically distributed external threads. The drive shaft 22 is threadedly connected to symmetrically distributed mounting blocks 23 through its external threads. The mounting blocks 23 are slidably connected to the fixing frame 21. The mounting blocks 23 are fixed to an electric slide rail 24. The electric slide rail 24 is provided with an electric slider 25. The electric slider 25 is fixed to a limit block 26. The limit block 26 is fixed to symmetrically distributed fixing blocks 25. Plate 27, near the first partition plate 2, is equipped with a pressing plate 28 for pressing the corresponding moving rod 10. The fixed plate 27 is equipped with a positioning plate 29 and a first driving module and a second driving module for driving the pressing plate 28 and the positioning plate 29 to move, respectively. The scraper plate 7 is fixed with symmetrically distributed fixed rods 30 and symmetrically distributed positioning rods 31. The fixed rods 30 and the positioning rods 31 are located on both sides of the corresponding moving rod 10. The limiting block 26 is used to limit the corresponding fixed rod 30, and the positioning plate 29 is used to limit the corresponding positioning rod 31.

[0041] In the above scheme, the fixing frame 21 is located at the upper right part of the outer shell 1. The power module on the fixing frame 21 is not shown in the existing device diagram, and can be a motor or the like in actual application. The drive shaft 22 is located on the upper side of the fixing frame 21, and the mounting block 23 passes through the fixing frame 21. During the rotation of the fixing frame 21, the two mounting blocks 23 can be driven to move synchronously towards or away from each other through the symmetrically distributed external threads on it. The electric slide rail 24 is located on the lower side of the corresponding mounting block 23, and the electric slider 25 is located on the side of the corresponding electric slide rail 24 near the center of the drive shaft 22. Both the electric slide rail 24 and the electric slider 25 are existing devices, and their specific working processes will not be described in detail in the text. The limiting block 26 is located on the lower side of the corresponding electric slider 25, and the fixing plates 27 on the same limiting block 26 are symmetrically distributed from left to right. The limiting block 26 is provided with a U-shaped opening facing downwards, which is used to limit the corresponding fixed rod 30. When the limiting block 26 contacts the corresponding fixed rod 30, the projection of the moving rod 10 on the vertical plane where the right side of the corresponding extrusion plate 28 is located is in the middle of the extrusion plate 28. The first drive module and the second drive module are both existing devices. The figure shows an electric rotating shaft with external threads and a limiting post as examples. The electric rotation is threaded to the corresponding fixed plate 27 through the external threads on it, and the limiting post is slidably connected to the corresponding fixed plate 27. The fixed rod 30 and the positioning rod 31 are located on the upper and lower sides of the corresponding scraper plate 7, respectively. When the limiting block 26 contacts the corresponding fixed rod 30, the projection of the positioning rod 31 on the vertical plane where the adjacent side of the corresponding positioning plate 29 is located is in the upper part of the corresponding positioning plate 29.

[0042] like Figure 4 and Figure 5 As shown, the scraper plate 7 is made of an elastic deformable material and is arc-shaped. When the moving rod 10 is located in the corresponding limiting groove 11, the center of the scraper plate 7 faces to the right.

[0043] The specific workflow of the above scheme is as follows: During the movement of the scraper plate 7, the scraper plate 7 drives the two fixed rods 30 and the two positioning rods 31 on it to move synchronously. When the connecting plate 6 moves to a position where it is aligned vertically with the central axis of the right sprocket on the transmission module 5 (at this time, the fixed rod 30 is below the limit block 26 and the scraper plate 7 is above the slag removal chamber), the operator shuts off the transmission module 5 and starts the power module at the same time. The power module drives the drive shaft 22 to rotate. During the rotation of the drive shaft 22, the two mounting blocks 23 are driven to move closer to each other. The mounting blocks 23 drive the corresponding electric slide rail 24 and all the parts connected to the electric slide rail 24 to move synchronously until the limit block 26 is directly above the corresponding fixed rod 30. Then the operator shuts off the power module and drives the two electric sliders 25 to move downward synchronously.

[0044] When the limiting block 26 moves downward to contact the corresponding fixed rod 30, the operator shuts off the electric slider 25 and starts all the second drive modules. The second drive modules drive the corresponding positioning plate 29 to move towards the positioning rod 31. After the positioning plate 29 contacts the corresponding positioning rod 31, the second drive modules are shut off (at this time, the two positioning rods 31 are in contact with the two corresponding positioning plates 29 respectively). Thus, the positioning plate 29 constrains the lateral displacement of the corresponding positioning rod 31.

[0045] After shutting down all the second drive modules, the staff started the two first drive modules, which respectively drove the corresponding extrusion plates 28 to move to the right. When the extrusion plates 28 contacted the corresponding moving rods 10, the extrusion plates 28 pushed the corresponding moving rods 10 to move synchronously, thereby applying a thrust to the middle area of ​​the scraper plate 7 (during this process, because the limiting block 26 limits the corresponding fixed rod 30 and the positioning plate 29 limits the corresponding positioning rod 31, the scraper plate 7 cannot move upward and can only move downward), causing the scraper plate 7 to deform. During this process, the scraper plate 7 drives the two positioning rods 31 to move downward synchronously (so that the scraper plate 7 gradually changes from an arc shape to a vertical shape). The positioning rods 31 move downward along the corresponding positioning plate 29 and are limited by the positioning plate 29 and cannot move left or right, thereby ensuring the stability of the position and deformation of the scraper plate 7.

[0046] After the scraper plate 7 is pushed to the vertical position, the moving rod 10 continues to move to the right. The squeezing force applied to the scraper plate 7 causes the middle part of the scraper plate 7 to deform to the right, causing the scraper plate 7 to drive the positioning rod 31 to move upward. When the squeezing plate 28 moves to the right limit position, the moving rod 10 contacts the fixed plate 27 on the right side. Then, the operator drives the two squeezing plates 28 to reset to the left through the two first drive modules (but it is necessary to control the speed of the squeezing plates 28 to reset to the left to be greater than their speed of moving to the right), so that the two squeezing plates 28 separate from the corresponding moving rod 10. As a result, the scraper plate 7 rebounds rapidly under its own elastic force (because the separation speed of the squeezing plates 28 from the corresponding moving rod 10 is relatively fast, the elastic potential energy stored in the scraper plate 7 is released quickly). During the rapid rebound, the scraper plate 7 vibrates due to the instantaneous release of its elastic potential energy, thereby shaking off the residual impurities attached to the plate surface, reducing the probability of residual impurities on the scraper plate 7 falling into the outer shell 1 during its leftward movement, and improving the overall cleaning efficiency.

[0047] After both extrusion plates 28 have moved to their initial positions to the left, the operator uses all the second drive modules to reset all the positioning plates 29 relative to the fixed plate 27 to their initial positions. Then, the electric slider 25 and all the parts connected to it are reset to their initial positions for subsequent use, and the drive module 5 is restarted, so that the scraper plate 7 continues to move. Example 4

[0048] Based on Example 3, this example further optimizes the complete set of equipment for the reuse and treatment of dyeing and printing wastewater.

[0049] like Figure 11 and Figure 12 As shown, it also includes an electric push rod 32, which is fixed to the side of the outer shell 1 near the first partition 2. The outer shell 1 is slidably connected to two symmetrically distributed movable frames 33, which are slidably connected to a push plate 34. The push plate 34 is in contact with the first partition 2. The telescopic end of the electric push rod 32 is slidably connected to the push plate 34 through a mounting bracket. The movable frame 33 is provided with a third drive module. The third drive modules on the two movable frames 33 are used together to drive the push plate 34 to move.

[0050] In the above scheme, the electric push rod 32 is located on the upper left side of the outer shell 1, and the projection of the electric push rod 32 on the horizontal plane is located on the center line of the projection of the outer shell 1 on the horizontal plane; the two moving frames 33 are both located on the upper side of the outer shell 1 and are symmetrically distributed front and back; the lower side of the push plate 34 is higher than the upper side of the second partition plate 3 and lower than the lower side of the slag removal platform 401, ensuring that the lower part of the push plate 34 is always in the liquid; the third drive module is shown in the figure as an example of an electric rotating shaft with external threads. The electric rotating shaft is rotatably connected to the corresponding moving frame 33 and is also threadedly connected to the push plate 34 through its external threads.

[0051] The specific workflow of the above scheme is as follows: As wastewater flows along the guide cavity, some flocculated impurities are carried by the rising water flow and tend to accumulate at the interface between the water-facing surface and the liquid surface of the first baffle 2. Since this area is outside the normal scraping range of the scraper 7, the scraper 7 cannot clean this part of the impurities, thus affecting the cleaning effect on the impurities inside the outer shell 1. To address this, the device can perform the following operation: During the operation of the transmission module 5, the operator starts the electric push rod 32. The telescopic end of the electric push rod 32 drives the push plate 34 to move synchronously to the right through the mounting bracket on it. The push plate 34 drives the two moving frames 33 to move synchronously along the outer shell 1, thereby pushing the impurities located on the right side of the first partition 2 to the right to the position that the scraper plate 7 can cover when entering the water, thus ensuring the comprehensiveness of the scraper plate 7 in the process of cleaning impurities.

[0052] Once the telescopic end of the electric push rod 32 is fully extended, the operator shuts off the electric push rod 32 and activates the two third drive modules. The two third drive modules work together to move the push plate 34 upward, lifting it from the liquid to above the liquid surface. Once the push plate 34 has moved to its limit position, the operator shuts off the two third drive modules and controls the electric push rod 32 to move the push plate 34 back to the left until it is in contact with the right side of the first partition 2. Then, the operator shuts off the electric push rod 32 and uses the two third drive modules to move the push plate 34 downward, allowing the lower part of the push plate 34 to re-enter the liquid for later use (in subsequent sewage processes, the operator can intermittently activate the electric push rod 32 according to the above operation).

[0053] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

Claims

1. A complete set of equipment for the reuse and treatment of dyeing and printing wastewater, comprising an outer shell (1), a water injection module and a chemical dosing module provided on one side of the outer shell (1), a first partition (2), a second partition (3), a slag removal platform (401) and a third partition (4) arranged sequentially inside the outer shell (1), a number of aeration pipes (402) provided inside the outer shell (1), each group of aeration pipes (402) having a number of evenly distributed aeration pipes (402), the aeration pipes (402) being located between the second partition (3) and the slag removal platform (401), and a transmission module (5) provided on the outer shell (1), characterized in that, It also includes a connecting plate (6), which is disposed on the transmission module (5). The transmission module (5) is used to drive the connecting plate (6) to move. A scraper plate (7) is fixedly connected to the connecting plate (6). A moving plate (8) is slidably connected to the scraper plate (7). A reset spring (9) is fixedly connected between the moving plate (8) and the scraper plate (7).

2. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 1, characterized in that, The movable plate (8) is made of an elastic deformable material, and the slag removal platform (401) is located on the moving path of the movable plate (8).

3. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 1, characterized in that, The movable plate (8) is fixedly connected with symmetrically distributed movable rods (10), the movable rods (10) are slidably connected to the corresponding scraper plate (7), and the outer shell (1) is provided with symmetrically distributed limiting grooves (11), the movable rods (10) slide in the corresponding limiting grooves (11).

4. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 3, characterized in that, The limiting groove (11) is composed of an inlet (111), an inclined part (112) and an outlet (113) connected in sequence. The inclined part (112) is inclined downward from the inlet (111) to the outlet (113), and the inclined part (112) is used to limit the corresponding moving rod (10).

5. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 3, characterized in that, It also includes an air inlet pipe (12), which is fixed to one side of the outer shell (1). The air inlet pipe (12) is fixed to and connected to a number of diverter pipes (13) that are the same as the number of aeration pipes (402). The diverter pipes (13) pass through the outer shell (1) and are fixed to it. The diverter pipes (13) are connected to a corresponding group of aeration pipes (402). The diverter pipes (13) are fixed to and connected to a connecting pipe (14). The connecting pipe (14) is slidably connected to a movable shell (15). A baffle rod (16) is fixed inside the movable shell (15). The baffle rod (16) is slidably connected to the connecting pipe (14). The baffle rod (16) is used to change the flow area of ​​the corresponding diverter pipe (13). A return spring (17) is fixed between the connecting pipe (14) and the corresponding movable shell (15).

6. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 5, characterized in that, A movable block (18) is fixedly connected to the upper side of the movable shell (15), a connecting rod (19) is fixedly connected to the connecting plate (6), a pressing block (20) is fixedly connected to the connecting rod (19), and an inclined surface for pressing the movable block (18) is provided on the pressing block (20).

7. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 5, characterized in that, It also includes a fixed frame (21), which is fixed to the outer shell (1). The projection of the fixed frame (21) on the horizontal plane is located between the third partition (4) and the slag removal platform (401). The fixed frame (21) is rotatably connected to a drive shaft (22). The drive shaft (22) is provided with symmetrically distributed external threads. The drive shaft (22) is threaded with symmetrically distributed mounting blocks (23) through the external threads. The mounting blocks (23) are slidably connected to the fixed frame (21). The mounting blocks (23) are fixed to an electric slide rail (24). The electric slide rail (24) is provided with an electric slider (25). The electric slider (25) is fixed to a limit block (26). The limit block (26) is fixed to a symmetrically distributed fixed plate (27). The fixed plate (27) near the first partition (2) is provided with a pressing plate (28). The pressing plate (28) is used to press the corresponding moving rod (10).

8. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 7, characterized in that, The fixed plate (27) is provided with a positioning plate (29). The fixed plate (27) is provided with a first driving module and a second driving module for driving the extrusion plate (28) and the positioning plate (29) to move respectively. The scraper plate (7) is fixed with symmetrically distributed fixed rods (30) and symmetrically distributed positioning rods (31). The fixed rods (30) and the positioning rods (31) are respectively located on both sides of the corresponding moving rod (10). The limiting block (26) is used to limit the corresponding fixed rod (30), and the positioning plate (29) is used to limit the corresponding positioning rod (31).

9. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 8, characterized in that, The scraper plate (7) is made of an elastic deformable material and is arc-shaped.

10. The complete set of equipment for the reuse and treatment of dyeing and printing wastewater according to claim 8, characterized in that, It also includes an electric push rod (32), which is fixed to the side of the outer shell (1) near the first partition (2). The outer shell (1) is slidably connected to two symmetrically distributed movable frames (33). The symmetrically distributed movable frames (33) are slidably connected to a push plate (34). The push plate (34) is in contact with the first partition (2). The telescopic end of the electric push rod (32) is slidably connected to the push plate (34) through a mounting bracket. The movable frame (33) is provided with a third drive module. The third drive modules on the two movable frames (33) are used together to drive the push plate (34) to move.

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