A papermaking wastewater recycling device

Abstract

This invention discloses a papermaking wastewater recycling device in the field of wastewater treatment technology, aiming to solve the problem in existing technologies where the recycling of pulp fibers requires stopping the operation and removing the filter screen, preventing continuous processing. It includes a working box and a collection box. The working box contains a fixing mechanism for securing the filter screen and a cleaning mechanism. A slidingly connected sealing block is fitted into the through-hole. The cleaning mechanism includes a cylinder, a movable block, and a scraper. The movable block matches the sealing block to form a box structure with an opening facing downwards. This invention is applicable to wastewater treatment and recycling. The scraper scrapes and collects the pulp fibers. After the movable block contacts the scraper, the two form a box structure with an opening facing downwards. After the movable block moves into the collection box, the scraper rotates, and the pulp fibers fall into the collection box, completing the recycling process. There is no need to stop the operation and remove the filter screen; the device can continuously treat wastewater.

Description

Technical Field

[0001] This invention relates to a papermaking wastewater recycling device, belonging to the field of wastewater treatment technology. Background Technology

[0002] Currently, papermaking wastewater refers to the wastewater generated during the pulping and papermaking process. Papermaking wastewater has a complex composition, containing large amounts of lignin, hemicellulose, sugars, and other dissolved substances (residual alkali, inorganic salts, volatile acids, ammonia nitrogen, etc.). If discharged into receiving water bodies without treatment, it not only consumes dissolved oxygen and affects the survival of aquatic organisms, but also alters their physiological and biochemical processes, community structure, and internal tissues, making them more susceptible to various harmful microorganisms, thus reducing the quantity and quality of aquatic life. Due to the complex composition of papermaking wastewater, if it enters the subsequent biological treatment stage, it will disrupt the biological system. Therefore, physicochemical pretreatment is crucial to the success of papermaking wastewater treatment. Furthermore, papermaking wastewater is rich in pulping fibers, inorganic fillers, and various chemical additives, making it a renewable resource. Recovering this pulping fiber not only reduces suspended solids in the wastewater but also allows the recovered pulping fiber to be reused in the production system, reducing fiber loss.

[0003] Existing papermaking wastewater recycling equipment typically uses filters to trap most of the pulp in the wastewater during pulp fiber recovery. After that, the equipment needs to be stopped and the filters removed to recover the pulp on the filters. This process cannot be continuous and affects the equipment's processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a papermaking wastewater recycling device. This solves the problem that when the papermaking wastewater recycling device is recycling pulp fibers, it needs to stop working and remove the filter screen to recycle the pulp on the filter screen, which prevents the device from continuously processing and affects the processing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0006] This invention provides a papermaking wastewater recycling device, including a working box and a collection box. The working box is equipped with a fixing mechanism for fixing a filter screen. The working box and the collection box are connected by a through hole. The working box is equipped with a cleaning mechanism, and a slidably connected sealing block is matched in the through hole. The collection box is equipped with a squeezing mechanism. The cleaning mechanism includes a cylinder located in the working box. The output end of the cylinder is equipped with a movable block. A scraper is rotatably connected in the movable block. The scraper and the movable block are elastically connected by a first spring. The scraper is used to clean the filter screen. The sealing block is elastically connected to the collection box by a third spring. The movable block is located on one side of the sealing block. The movable block and the sealing block match to form a box structure with the opening facing downwards.

[0007] Furthermore, the extrusion mechanism includes a bracket slidably disposed on the inner wall of the collection box. The inner wall of the bracket is symmetrically provided with grooves on both sides. A slider is slidably connected in the groove. The slider and the groove are elastically connected by a second spring. A pressure roller is rotatably connected between the two sliders. A filter plate is provided in the collection box below the pressure roller. A power mechanism for driving the bracket to move is provided in the collection box.

[0008] Furthermore, the fixing mechanism includes a frame that matches the filter screen. The frame has a rotating shaft that is rotatably connected inside it. The filter screen is sleeved on the outside of the rotating shaft and fixedly connected to it. The filter screen can be flipped inside the frame.

[0009] Furthermore, a groove is provided at one end of the rotating shaft, and a connecting rod is provided on one side of the inner wall of the work box. One end of the connecting rod extends to the outside of the work box and is provided with a handle. A limiting block is provided at the other end of the connecting rod on the inner side of the work box. The limiting block matches the groove, and a limiting hole matching the limiting block is provided on one side of the limiting block on the inner wall of the work box.

[0010] Furthermore, it also includes a warning mechanism, which includes a switch located inside the work box, above the filter screen, a float slidably connected to the inner wall of the work box below the switch, and an alarm on the work box, which is electrically connected to the switch.

[0011] Furthermore, the bottom of the fixing mechanism is provided with a lifting mechanism, which includes a support block located at the bottom of the fixing mechanism. The working box is provided with an electric telescopic rod, the output end of which is fixedly connected to the support block for driving the support block to move up and down.

[0012] Furthermore, the lifting mechanism consists of two sets, which are respectively located on both sides of the bottom of the fixed mechanism.

[0013] Furthermore, the bottom of the working box is provided with a water outlet pipe and a wastewater pipe, and the bottom of the working box is provided with a slidably connected baffle. The baffle is provided with a rotatably connected push rod, one end of which is rotatably connected to one of the support blocks.

[0014] Furthermore, the working box is detachably connected to a top cover, the top cover has a water inlet, the working box has a grid above the filter screen, the working box has an observation port, and the inner side of the observation port is fitted with a glass window.

[0015] Furthermore, a drain pipe is provided at the bottom of the collection box, and the drain pipe is connected to the water outlet pipe.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0017] 1. This papermaking wastewater recycling device, through the cooperation of a movable block, scraper, sealing block, and through holes, allows for the recycling of pulp fibers on the top of the filter screen. The movable block and scraper move towards the sealing block, with the scraper scraping and collecting the pulp fibers. When the movable block and scraper come into contact, they form a downward-opening box structure, preventing newly falling wastewater from washing away the collected pulp fibers and ensuring the recycling effect. When the movable block moves into the collection box, the first spring pushes the scraper to rotate, and the pulp fibers fall into the collection box due to gravity, completing the recycling process. The device can continuously treat wastewater without stopping the operation to remove the filter screen, ensuring its efficiency. During pulp fiber recycling, the movable block and sealing block alternately seal the through holes, preventing excessive wastewater from entering the collection box and affecting its recycling effect.

[0018] 2. The present invention uses a combination of a limiting block, a handle, and a groove to flip the filter screen. When wastewater continues to pass through the filter screen, it can backwash the filter screen, thereby preventing the filter screen from being blocked and ensuring the working effect of the device.

[0019] 3. When the wastewater accumulated on the filter screen reaches a certain level, the float moves upward and contacts the switch, thereby activating the alarm to remind the staff that the filter screen is clogged. At this time, the filter screen can be flipped over, ensuring the stability of the device during operation.

[0020] 4. This invention uses a push rod, baffle and wastewater pipe to prevent unfiltered wastewater and wastewater containing a lot of paper fibers from flowing out of the outlet pipe, thus ensuring the device's filtration and recycling effect on wastewater. Attached Figure Description

[0021] Figure 1This is a front cross-sectional schematic diagram of a papermaking wastewater recycling device according to an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0024] Figure 4 yes Figure 1 Enlarged view of point C in the middle;

[0025] Figure 5 This is a schematic front cross-sectional view of the bracket provided according to an embodiment of the present invention;

[0026] Figure 6 This is a side view of the frame structure provided according to an embodiment of the present invention;

[0027] Figure 7 This is a front view structural diagram of a papermaking wastewater recycling device according to an embodiment of the present invention.

[0028] In the diagram: 1. Working box; 2. Filter screen; 3. Collection box; 4. Through hole; 5. Sealing block; 6. Cylinder; 7. Movable block; 8. Scraper; 9. First spring; 10. Support; 11. Pressure roller; 12. Filter plate; 13. Slide groove; 14. Slider; 15. Second spring; 16. Frame; 17. Rotating shaft; 18. Groove; 19. Connecting rod; 20. Handle; 21. Limiting block; 22. Limiting hole; 23. Switch; 24. Float; 25. Alarm; 26. Third spring; 27. Support block; 28. Electric telescopic rod; 29. ​​Water outlet pipe; 30. Wastewater pipe; 31. Baffle; 32. Push rod; 33. Top cover; 34. Grille; 35. Drain pipe; 36. Observation port; 37. Glass window. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, 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 a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figure 1-7 As shown, the present invention provides a papermaking wastewater recycling device, including a working box 1 and a collection box 3. The working box 1 is provided with a fixing mechanism for fixing a filter screen 2. The working box 1 and the collection box 3 are connected by a through hole 4. The working box 1 is provided with a cleaning mechanism, and a slidingly connected sealing block 5 is matched in the through hole 4. The collection box 3 is provided with a squeezing mechanism. The cleaning mechanism includes a cylinder 6 disposed in the working box 1. The output end of the cylinder 6 is provided with a movable block 7. A scraper 8 is rotatably connected in the movable block 7. The scraper 8 communicates with the movable block 7. The scraper 8 is used to clean the filter screen 2 via the first spring 9. The sealing block 5 is elastically connected to the collection box 3 via the third spring 26. The movable block 7 is located on one side of the sealing block 5 and matches the sealing block 5 to form a box structure with the opening facing downward. The working box 1 is detachably connected to the top cover 33, which has a water inlet. The working box 1 has a grille 34 above the filter screen 2. The working box 1 has an observation port 36, and a glass window 37 is matched on the inner side of the observation port 36.

[0033] Specifically, the wastewater to be treated is fed into the working tank 1 through the inlet, and then filtered through the filter screen 2. The filter screen 2 traps most of the pulp fibers in the wastewater. The filtered wastewater is discharged through the outlet pipe 29 and enters the next step, the rapid mixing tank, for further processing. After the device has been working for a period of time, some pulp fibers accumulate on the top of the filter screen 2. When it is necessary to recycle them, the cylinder 6 starts working, pushing the movable block 7 towards the sealing block 5. The first spring 9 pushes the scraper 8 to make close contact with the top of the filter screen 2. The scraper 8 moves with the movable block 7, thereby cleaning the pulp fibers on the top of the filter screen 2 and moving the pulp fibers towards the sealing block 5. When the movable block 7 contacts the sealing block 5, a box structure with the opening facing downwards is formed, preventing the wastewater from washing away the pulp fibers collected by the scraper 8 and affecting the recycling work of the device. At this time, the scraper 8 is located below the box structure, and the cylinder 6 continues to operate. The cylinder 6 pushes the movable block 7 into the through hole 4, compressing the third spring 26. At this time, the movable block 7 replaces the sealing block 5 to block the through hole 4, preventing excessive wastewater from entering the collection box 3 through the through hole 4. The cylinder 6 continues to push the movable block 7 closer to the collection box 3. When part of the movable block 7 moves into the collection box 3, the filter screen 2 and the through hole 4 no longer block the scraper 8. The first spring 9 pushes the scraper 8 downward to rotate, causing the pulp fibers scraped off the filter screen 2 to fall into the collection box 3 for collection, thus completing the pulp fiber recycling work. Then, the cylinder 6 drives the movable block 7 back to its original position, and the through hole 4, filter screen 2 and scraper 8 come into contact, thus pushing the scraper 8 back to the inside of the movable block 7. The first spring 9 is compressed to facilitate the next cleaning work. The third spring 26 pushes the sealing block 5 back to its original position. When the device is recycling pulp fibers, the through hole 4 is always in a sealed state.

[0034] This invention utilizes a combination of a movable block 7, a scraper 8, a sealing block 5, and a through hole 4. When it is necessary to recycle the pulp fibers on the top of the filter screen 2, the movable block 7 and the scraper 8 move towards the sealing block 5. The scraper 8 scrapes and collects the pulp fibers on the top of the filter screen 2. When the movable block 7 and the scraper 8 come into contact, they form a box structure with the opening facing downwards, preventing newly falling wastewater from washing away the pulp fibers collected by the scraper 8, thus ensuring the recycling effect of the device. When the movable block 7 moves into the collection box 3, the first spring 9 pushes the scraper 8 to rotate, and the pulp fibers fall into the collection box 3 due to gravity, completing the recycling work. There is no need to stop the operation to remove the filter screen 2, and the device can continuously perform wastewater treatment, ensuring the working efficiency of the device. When recycling pulp fibers, the device uses the movable block 7 and the sealing block 5 to alternately seal the through hole 4, thereby preventing excessive wastewater from entering the collection box 3 through the through hole 4 and affecting the recycling effect of the collection box 3.

[0035] In one embodiment, the extrusion mechanism includes a support 10 slidably disposed on the inner wall of the collection box 3. The inner wall of the support 10 has symmetrically opened grooves 13 on both sides. The grooves 13 are provided with sliding blocks 14 that are slidably connected. The sliding blocks 14 and the grooves 13 are elastically connected by a second spring 15. A pressure roller 11 is rotatably connected between the two sliding blocks 14. A filter plate 12 is provided in the collection box 3 below the pressure roller 11. The collection box 3 is provided with a power mechanism for driving the support 10 to move.

[0036] Specifically, after the pulp fibers fall into the collection box 3, they accumulate above the filter plate 12. The second spring 15 pushes the slider 14 towards the filter plate 12. The chute 13 guides the slider 14. The pressure roller 11 moves with the slider 14, causing the second spring 15 to push the pressure roller 11 into close contact with the filter plate 12. Then, the power mechanism starts working, driving the support 10 to move left and right. The pressure roller 11 moves with the support 10, and the second spring 15 pushes the pressure roller 11 downward, thereby squeezing the paper fibers on the top of the filter plate 12 tightly. The squeezed water falls below the filter plate 12 to facilitate the recycling of the pulp fibers.

[0037] In one embodiment, the fixing mechanism includes a frame 16 that matches the filter screen 2. A rotating shaft 17 is rotatably connected within the frame 16. The filter screen 2 is sleeved on the outside of the rotating shaft 17 and fixedly connected to it. The filter screen 2 can be flipped inside the frame 16. A groove 18 is provided at one end of the rotating shaft 17. A connecting rod 19 is rotatably connected to one side of the inner wall of the work box 1. One end of the connecting rod 19 extends to the outside of the work box 1 and has a handle 20. A limiting block 21 is provided at the other end of the connecting rod 19 inside the work box 1. The limiting block 21 matches the groove 18. A limiting hole 22 matching the limiting block 21 is provided on one side of the inner wall of the work box 1 on one side of the limiting block 21.

[0038] Specifically, as the work progresses, some impurities and paper fibers will get stuck inside the filter screen 2, causing blockage and affecting its filtration effect. When it is necessary to deal with the blockage of the filter screen 2, the lifting mechanism can drive the fixing mechanism to move downward, thus providing space for the filter screen 2 to flip. When the frame 16 moves downward to the required position, that is, when the groove 18 on the rotating shaft 17 is located on one side of the limiting hole 22, the handle 20 can be pushed towards the work box 1. The connecting rod 19 and the limiting block 21 move with the handle 20, so that the limiting block When the 21 moves to the inside of the groove 18, the two engage with each other. At this time, the handle 20 is rotated, which in turn rotates the limiting block 21. The groove 18 and the rotating shaft 17 rotate accordingly, which in turn rotates the filter screen 2. After the filter screen 2 is flipped 180°, the handle 20 is moved away from the working box 1, which in turn moves the limiting block 21 to the inside of the limiting hole 22 for placement. After the frame 16 is restored to its original position by the lifting mechanism, when the wastewater continues to pass through the filter screen 2, the filter screen 2 can be backflushed, thereby preventing the filter screen 2 from being blocked and ensuring the working effect of the device.

[0039] In one embodiment, a warning mechanism is further included, which includes a switch 23 disposed inside the work box 1, the switch 23 being located above the filter screen 2, a float 24 slidably connected to the inner wall of the work box 1 below the switch 23, and an alarm 25 disposed on the work box 1, the alarm 25 being electrically connected to the switch 23.

[0040] Specifically, when filter screen 2 becomes clogged, its filtration performance deteriorates, causing the wastewater filtration rate to lag behind the wastewater addition rate. As the process continues, the accumulated wastewater on filter screen 2 increases, causing the wastewater level to rise. The float 24 floats on the wastewater surface and rises with the wastewater level. When the accumulated wastewater on filter screen 2 reaches a certain level, the float 24 rises and contacts the switch 23, thereby activating the alarm 25 to alert the staff that filter screen 2 is clogged. At this point, filter screen 2 can be flipped over, ensuring the stability of the device during operation.

[0041] In one embodiment, the bottom of the fixing mechanism is provided with a lifting mechanism, the lifting mechanism includes a support block 27 located at the bottom of the fixing mechanism, and an electric telescopic rod 28 is provided inside the work box 1. The output end of the electric telescopic rod 28 is fixedly connected to the support block 27 and is used to drive the support block 27 to move up and down.

[0042] In use, when the frame 16 needs to be raised or lowered, the electric telescopic rod 28 starts to work, driving the support block 27 to move. The frame 16 moves with the support block 27, thereby completing the raising and lowering work. Optionally, the raising mechanism is divided into two sets and is located on both sides of the bottom of the fixed mechanism to ensure the stability of the frame 16 when it is raised or lowered.

[0043] In one embodiment, the bottom of the working box 1 is provided with a water outlet pipe 29 and a wastewater pipe 30. The bottom of the working box 1 is provided with a slidably connected baffle 31. The baffle 31 is provided with a rotatably connected push rod 32. One end of the push rod 32 is rotatably connected to one of the support blocks 27. The bottom of the collection box 3 is provided with a drain pipe 35, which is connected to the water outlet pipe 29.

[0044] Specifically, during normal operation, wastewater filtered by filter screen 2 flows out through outlet pipe 29. When filter screen 2 needs to be flipped, the electric telescopic rod 28 drives the support block 27 and frame 16 downwards. At this time, the support block 27 drives the push rod 32 to move, and the push rod 32 pushes the baffle 31 to one side of outlet pipe 29, thus removing the blockage of wastewater pipe 30. At this time, wastewater flows out through wastewater pipe 30. When filter screen 2 is flipped, the accumulated wastewater and newly added wastewater on filter screen 2 will flow down directly without filtration. Therefore, they are collected through wastewater pipe 30 to prevent them from flowing out through outlet pipe 29, ensuring the working effect of the device. After the rotation, the frame 16 remains stationary for a period of time. During this time, the wastewater passes through the filter screen 2 and is backwashed. The flushed paper fibers are collected through the wastewater pipe 30. After a period of backwashing, the electric telescopic rod 28 drives the frame 16 to return to its original position, and the support block 27 drives the baffle 31 to return to its original position. At this time, the wastewater pipe 30 is blocked, and the blockage of the outlet pipe 29 is removed, restoring normal wastewater filtration. This invention, through the cooperation of the push rod 32, the baffle 31, and the wastewater pipe 30, prevents unfiltered wastewater and wastewater containing a lot of paper fibers from flowing out of the outlet pipe 29, ensuring the filtration and recycling effect of the device on wastewater. The wastewater squeezed out of the collection box 3 can flow out through the outlet pipe 29.

[0045] The working box 1 is detachably connected to a top cover 33, which has a water inlet. The working box 1 has a grid 34 above the filter screen 2, and the working box 1 has an observation port 36. A glass window 37 is matched to the inside of the observation port 36.

[0046] Specifically, the grille 34 is used to block excessively large impurities in the wastewater, and the top cover 33 facilitates maintenance of the working box 1. When the filter screen 2 is flipped, the flipping angle of the filter screen 2 can be observed through the observation port 36 and the glass window 37 to prevent the filter screen 2 from tilting. Even a slight angle difference in the filter screen 2 will be adjusted when the frame 16 returns to its original position and the movable block 7 contacts the filter screen 2, thus ensuring the working effect of the device.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A papermaking wastewater recycling device, characterized in that, It includes a working box (1) and a collection box (3). The working box (1) is provided with a fixing mechanism for fixing the filter screen (2). The working box (1) and the collection box (3) are connected through a through hole (4). The working box (1) is provided with a cleaning mechanism. The through hole (4) is provided with a slidingly connected sealing block (5). The collection box (3) is provided with a squeezing mechanism. The cleaning mechanism includes a cylinder (6) located in the working box (1). The output end of the cylinder (6) is provided with a movable block (7). The movable block (7) is provided with a rotatably connected scraper (8). The scraper (8) and the movable block (7) are elastically connected by a first spring (9). The scraper (8) is used to clean the filter screen (2). The sealing block (5) is elastically connected to the collection box (3) by a third spring (26). The movable block (7) is located on one side of the sealing block (5). The movable block (7) matches the sealing block (5) and can form a box structure with the opening facing downward. The extrusion mechanism includes a bracket (10) slidably disposed on the inner wall of the collection box (3). The inner wall of the bracket (10) is symmetrically provided with grooves (13) on both sides. The grooves (13) are provided with sliding blocks (14) slidably connected. The sliding blocks (14) and the grooves (13) are elastically connected by a second spring (15). A pressure roller (11) is provided rotatably connected between the two sliding blocks (14). A filter plate (12) is provided below the pressure roller (11) in the collection box (3). The collection box (3) is provided with a power mechanism for driving the bracket (10) to move.

2. The papermaking wastewater recycling device according to claim 1, characterized in that, The fixing mechanism includes a frame (16) that matches the filter (2). The frame (16) has a rotating shaft (17) inside it. The filter (2) is sleeved on the outside of the rotating shaft (17) and fixedly connected to the rotating shaft (17). The filter (2) can be flipped inside the frame (16).

3. The papermaking wastewater recycling device according to claim 2, characterized in that, The rotating shaft (17) has a groove (18) at one end, and a connecting rod (19) is provided on one side of the inner wall of the work box (1). One end of the connecting rod (19) extends to the outside of the work box (1) and is provided with a handle (20). The other end of the connecting rod (19) is provided with a limiting block (21) on the inner side of the work box (1). The limiting block (21) matches the groove (18). The inner wall of the work box (1) is provided with a limiting hole (22) on one side of the limiting block (21) that matches the limiting block (21).

4. The papermaking wastewater recycling device according to claim 1, characterized in that, It also includes a warning mechanism, which includes a switch (23) located inside the work box (1), the switch (23) being located above the filter screen (2), a floating block (24) slidably connected to the inner wall of the work box (1) below the switch (23), and an alarm (25) provided on the work box (1), the alarm (25) being electrically connected to the switch (23).

5. The papermaking wastewater recycling device according to claim 1, characterized in that, The bottom of the fixed mechanism is provided with a lifting mechanism, which includes a support block (27) located at the bottom of the fixed mechanism. The work box (1) is provided with an electric telescopic rod (28). The output end of the electric telescopic rod (28) is fixedly connected to the support block (27) to drive the support block (27) to lift.

6. The papermaking wastewater recycling device according to claim 5, characterized in that, The lifting mechanism consists of two sets, which are located on both sides of the bottom of the fixed mechanism.

7. The papermaking wastewater recycling device according to claim 6, characterized in that, The bottom of the work box (1) is provided with a water outlet pipe (29) and a wastewater pipe (30). The bottom of the work box (1) is provided with a slidingly connected baffle (31). The baffle (31) is provided with a rotatably connected push rod (32). One end of the push rod (32) is rotatably connected to one of the support blocks (27).

8. The papermaking wastewater recycling device according to claim 1, characterized in that, The working box (1) is detachably connected to a top cover (33), and a water inlet is provided on the top cover (33). A grid (34) is provided above the filter screen (2) inside the working box (1). An observation port (36) is provided on the working box (1), and a glass window (37) is provided inside the observation port (36).

9. A papermaking wastewater recycling device according to claim 7, characterized in that, The bottom of the collection box (3) is provided with a drain pipe (35), which is connected to the water outlet pipe (29).

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