Energy-saving wastewater treatment device for corrugated paperboard production

Abstract

The application discloses an energy-saving wastewater treatment device for corrugated board production and relates to the field of wastewater treatment.The device comprises a treatment box and a filter screen, the treatment box is internally provided with a transmission frame and a bidirectional screw rod which are matched with the filter screen, and a motor, the transmission frame is obliquely arranged and fixedly connected with the filter screen, the bidirectional screw rod is threadedly connected with the transmission frame and connected with the motor, and the treatment box is internally provided with a draining rack which is located below the outer end of the transmission frame, and the side wall of the draining rack is provided with a baffle.The device drives the transmission frame and the filter screen to reciprocatingly move through the bidirectional screw rod, and a rotating knocking mechanism which is composed of a driving wheel, a synchronous disc, an elastic rod and a knocking ball is used to knock and vibrate the bottom surface of the filter screen, so that the accumulation of paper pulp fibers at the mesh holes of the filter screen is reduced, the situation that the filter screen is easily blocked and needs to be disassembled and cleaned during shutdown is relieved, the shutdown frequency of the equipment is reduced, and the continuous operation efficiency of the whole wastewater treatment device is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, specifically to an energy-saving wastewater treatment device for corrugated cardboard production. Background Technology

[0002] Corrugated cardboard is one of the most widely used materials in the packaging industry. During its printing, slotting, and gluing processes, a large amount of water is needed to clean the printing rollers, ink lines, corrugating rollers, and equipment, resulting in a large amount of corrugated cardboard printing wastewater. This wastewater contains a large amount of fine paper scraps, pulp fibers, and various auxiliary material pollutants. If discharged directly, it will cause environmental pollution. Therefore, the industry generally uses wastewater treatment equipment to purify and treat production wastewater.

[0003] Existing corrugated cardboard wastewater treatment equipment mainly treats wastewater through multi-stage sedimentation and filtration processes to remove solid impurities and meet wastewater discharge requirements. However, the pulp fibers in the wastewater from corrugated cardboard production have strong adhesive properties. During pipeline transportation, these fibers easily deposit and scale at pipe bends, valve interfaces, pump impellers, and other locations. Continuous fiber accumulation gradually reduces the pipe diameter, causing a sharp decrease in wastewater flow. In severe cases, it can even directly jam the pump bearings, causing the conveying system to shut down and ultimately disrupting the operation of the entire wastewater treatment unit, affecting the continuous operation of the corrugated cardboard production line.

[0004] To prevent large amounts of free pulp fibers and fine paper scraps in wastewater from flowing directly into subsequent treatment tanks, sedimentation tanks, and conveying pipelines, existing treatment devices generally install filters at the front end to intercept solid impurities. However, the high pulp fiber content in the wastewater makes the filters prone to clogging under continuous operation. Once the filters are clogged, the machine needs to be stopped to disassemble the filter assembly and then cleaned. The cleaning operation is inconvenient and will frequently cause equipment downtime, reducing the continuous operating efficiency of the entire wastewater treatment device. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving wastewater treatment device for corrugated cardboard production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving wastewater treatment device for corrugated cardboard production, comprising a treatment box and a filter screen, wherein the treatment box is provided with a transmission frame adapted to the filter screen and a bidirectional screw, as well as a motor, the transmission frame is inclined and fixedly connected to the filter screen, the bidirectional screw is threadedly connected to the transmission frame and connected to the motor, and the treatment box is provided with a drain rack located below the outer end of the transmission frame, and the side wall of the drain rack is equipped with a baffle. The bottom of the transmission frame is provided with a rotating striking mechanism and a drive wheel that match the filter screen, and the drive wheel is in contact with the top surface of the baffle to drive the rotating striking mechanism. The top of the drain frame is provided with a debris collection frame, and a drain plate is installed in the debris collection frame to receive solid impurities falling from the transmission frame. The bottom of the transmission frame is provided with a telescopic frame, and a pressure roller located above the drain plate is rotatably installed on the outer wall of the end of the telescopic frame to roll and press the solid impurities on the drain plate. The outer wall of the processing box is equipped with a sealing door that is compatible with the collection frame, and the processing box is equipped with an unlocking mechanism connected to the telescopic frame and the sealing door, so that when the sealing door is opened, the telescopic frame will drive the pressure roller to move up to the top of the collection frame.

[0007] Preferably, the top and bottom of the treatment box are respectively provided with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe is located above the filter screen; The transmission frame is slidably connected to the processing box, and one end of the transmission frame is equipped with a transmission lug that is threadedly connected to the bidirectional screw.

[0008] Preferably, the baffle is located below the end of the transmission frame that is not connected to the filter screen, and the top surface of the baffle is designed to be inclined towards the side of the transmission frame that is connected to the filter screen. The drive wheel is rotatably mounted at the bottom of the transmission frame, and the outer wall of the drive wheel is designed with an inclined surface that matches the top surface of the baffle. Both the drive wheel and the outer wall of the baffle are provided with friction texture.

[0009] Preferably, the rotating striking mechanism and the drive wheel are provided on the bottom surface of the end of the transmission frame that is not connected to the filter screen, and the rotating striking mechanism is located below the filter screen; The rotating striking mechanism includes a timing disc coaxially mounted with the drive wheel, an elastic rod mounted on the outer wall of the timing disc, and a striking ball mounted on the outer end of the elastic rod.

[0010] Preferably, multiple elastic rods are installed at equal angles on the outer wall of the synchronization disc, and the distance between the end of the elastic rod and the synchronization disc is smaller than the distance between the synchronization disc and the bottom surface of the filter screen. The elastic rod is made of stainless steel or a spring with a polyurethane coating.

[0011] Preferably, the outer wall of the treatment box is provided with a slag discharge port adapted to the collection frame, and the inner wall of the treatment box is equipped with a baffle block located above the collection frame. The top surface of the baffle block is designed as an inclined surface that slopes towards the drain plate. The sealing door is located outside the slag discharge port. The collection frame is equipped with a handle at the end near the sealing door, and the top surface of the drain plate and the outer wall of the pressure roller are both designed with a suitable bevel.

[0012] Preferably, the telescopic frames are all located on the side of the baffle close to the drain rack, and two sets of telescopic frames are provided at the bottom of the transmission frame; The telescopic frame includes a connecting seat installed at the bottom of the transmission frame and above the drain plate, a telescopic rod installed at the bottom of the connecting seat, and a mounting seat installed at the bottom of the telescopic rod, wherein the outer wall of the mounting seat is rotatably connected to the pressure roller. The telescopic rod is fitted with a spring that is connected to the mounting base and the connecting base.

[0013] Preferably, the unlocking mechanism includes a timing frame installed between two mounting seats and connected to the outer wall of the mounting seats, and a pull bracket is rotatably installed in the middle of the timing frame, and a pull rope connected to the inner wall of the sealing door is installed on the top of the pull bracket. Both the baffle and the bottom of the transmission frame are equipped with guide wheels adapted to the pull rope.

[0014] Preferably, the outer wall of the connecting seat is provided with a through groove adapted to the pull rope, and the outer side of the connecting seat is provided with a connecting wheel that is slidably connected to the pull rope; A counterweight is installed on the outer wall of the connecting wheel, and the counterweight has a U-shaped cross-section.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a bidirectional screw to drive the transmission frame and filter screen to reciprocate. In conjunction with a rotating striking mechanism consisting of a drive wheel, a synchronous disc, an elastic rod, and a striking ball, the bottom surface of the filter screen is struck and vibrated. This reduces the accumulation of pulp fibers in the filter screen mesh, alleviates the problem of easy clogging of the filter screen and the need for machine shutdown and disassembly for cleaning, reduces the frequency of equipment downtime, and helps to improve the continuous operation efficiency of the entire wastewater treatment device.

[0016] 2. This invention uses the reciprocating movement of the transmission frame to drive the pressure roller to roll back and forth on the top surface of the drain plate, thereby pressing the solid impurities such as paper scraps and pulp fibers collected inside the collection frame, squeezing out the water carried by the impurities, reducing the moisture content of the solid impurities, and reducing the burden of waste transfer and processing. At the same time, the movement of the transmission frame will drive the drive wheel to roll along the top surface of the baffle, thereby driving the rotating knocking mechanism to operate. No additional independent drive components are required. The knocking operation can be achieved by relying on the power of the reciprocating motion of the filter screen, reducing the number of power components required for the equipment.

[0017] 3. In this invention, when the sealed door is opened, the unlocking mechanism will lift the mounting base and pressure roller via the pull rope, so that the pressure roller moves above the collection frame and no longer interferes with the outward pulling of the collection frame; after the sealed door is closed, the spring pushes the pressure roller back to its original position. The collection frame can be disassembled and placed without additional operation of the pressure roller, simplifying the waste cleaning process. At the same time, the counterweight drives the connecting wheel to tighten the pull rope, reducing the phenomenon of the pull rope loosening and knotting during the reciprocating motion of the transmission frame. The guide wheel guides and constrains the movement trajectory of the pull rope, ensuring that the unlocking mechanism can be executed smoothly and improving the reliability of the linkage between the sealed door and the telescopic frame. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the processing box after it has been cut open according to the present invention; Figure 3 This is a structural schematic diagram of the transmission frame, drain rack, and debris collection frame of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram of point A in the middle; Figure 5 This is a structural schematic diagram of the components of the present invention, including the drain rack, the debris collection frame, and the telescopic frame. Figure 6 This is a structural schematic diagram of the components of the present invention, including the collection frame, handle, and unlocking mechanism; Figure 7 For the present invention Figure 2 A magnified structural diagram of point B in the middle; Figure 8 This is a schematic diagram of the cross-section of the dust collection frame of the present invention; Figure 9 This is a schematic diagram of the structure of the telescopic frame of the present invention after being cut open.

[0019] In the diagram: 1. Processing box; 2. Liquid filling pipe; 3. Liquid drain pipe; 4. Filter screen; 5. Transmission frame; 51. Transmission ear; 6. Double-acting screw; 7. Drain rack; 71. Baffle; 8. Drive wheel; 81. Synchronizing disc; 82. Elastic rod; 83. Striking ball; 9. Impurity collection frame; 90. Drain board; 91. Sealing door; 92. Stop block; 93. Handle; 10. Connecting seat; 101. Through groove; 11. Telescopic rod; 12. Mounting seat; 13. Pressure roller; 14. Spring; 15. Synchronizing frame; 16. Pull frame; 17. Pull rope; 18. Guide wheel; 19. Connecting wheel; 20. Counterweight. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9The present invention provides the following technical solution: an energy-saving wastewater treatment device for corrugated cardboard production, comprising a treatment box 1 and a filter screen 4. The treatment box 1 contains a transmission frame 5 and a bidirectional screw 6 adapted to the filter screen 4, as well as a motor. The transmission frame 5 is inclined and fixedly connected to the filter screen 4. The bidirectional screw 6 is threadedly connected to the transmission frame 5 and connected to the motor. A drain rack 7 located below the outer end of the transmission frame 5 is installed inside the treatment box 1, and a baffle 71 is installed on the side wall of the drain rack 7. The bottom of the transmission frame 5 is provided with a rotating striking mechanism and a drive wheel 8 matching the filter screen 4. Wheel 8 is in contact with the top surface of baffle 71 to drive the rotating striking mechanism. A collection frame 9 is slidably installed on the top of the drain rack 7, and a drain plate 90 is installed inside the collection frame 9 to collect solid impurities falling from the transmission frame 5. A telescopic frame is installed at the bottom of the transmission frame 5, and a pressure roller 13 located above the drain plate 90 is rotatably installed on the outer wall of the end of the telescopic frame to roll the solid impurities on the drain plate 90. A sealing door 91 adapted to the collection frame 9 is rotatably installed on the outer wall of the processing box 1, and an unlocking mechanism connected to the telescopic frame and the sealing door 91 is provided inside the processing box 1, so that... When the sealing door 91 is opened, the telescopic frame will drive the pressure roller 13 to move up to above the collection frame 9. The top and bottom of the treatment box 1 are respectively equipped with a liquid inlet pipe 2 and a liquid outlet pipe 3, and the liquid inlet pipe 2 is located above the filter screen 4. In use, wastewater is sent into the treatment box 1 through the liquid inlet pipe 2, and then flows down through the filter screen 4. The filter screen 4 intercepts solid impurities, and the filtered wastewater is discharged from the liquid outlet pipe 3. The transmission frame 5 is slidably connected to the treatment box 1, and one end of the transmission frame 5 is equipped with a transmission lug 51 that is threadedly connected to the bidirectional screw 6. At the same time, the motor drives the bidirectional screw 6 to rotate, so that the bidirectional screw 6... The transmission frame 5 is driven to slide back and forth by the transmission ear 51, and the transmission frame 5 will drive the filter screen 4 to reciprocate synchronously. During this process, the transmission frame 5 will also drive the drive wheel 8 to roll along the top surface of the baffle 71, so that the drive wheel 8 drives the rotating striking mechanism to strike the bottom surface of the filter screen 4. At the same time, the sliding transmission frame 5 will drive the pressure roller 13 to roll and dehydrate the solid impurities on the drain plate 90 through the telescopic frame. When it is necessary to remove the impurity collection frame 9, the unlocking mechanism will cooperate with the sealing door 91 to make the pressure roller 13 avoid the impurity collection frame 9, so that the user can take out the impurity collection frame 9 for cleaning.

[0022] In one embodiment of the present invention, the baffle 71 is located below the end of the transmission frame 5 that is not connected to the filter screen 4, and the top surface of the baffle 71 is designed to be inclined toward the side where the transmission frame 5 is connected to the filter screen 4; the drive wheel 8 is rotatably mounted at the bottom of the transmission frame 5, and the outer wall of the drive wheel 8 is designed to be inclined to match the top surface of the baffle 71. Both the drive wheel 8 and the outer wall of the baffle 71 are provided with friction textures. The inclined top surface of the baffle 71 and the inclined outer wall of the drive wheel 8 cooperate with each other. At the same time, if wastewater is accidentally splashed onto the top surface of the baffle 71 during use, the inclined surface can also guide the wastewater. When the transmission frame 5 moves back and forth, the drive wheel 8 will roll along the top surface of the baffle 71, and the friction texture will increase the contact friction between the drive wheel 8 and the baffle 71, further ensuring that the drive wheel 8 will rotate smoothly.

[0023] In one embodiment of the present invention, a plurality of rotating striking mechanisms and drive wheels 8 are provided on the bottom surface of the end of the transmission frame 5 not connected to the filter screen 4, and the rotating striking mechanism is located below the filter screen 4; the rotating striking mechanism includes a synchronous disk 81 coaxially mounted with the drive wheel 8, an elastic rod 82 mounted on the outer wall of the synchronous disk 81, and a striking ball 83 mounted on the outer end of the elastic rod 82. When the drive wheel 8 rotates, it drives the coaxial synchronous disk 81 to rotate together, so that the synchronous disk 81 drives the elastic rod 82 to rotate, and then the striking ball 83 at the end of the elastic rod 82 will cyclically strike the bottom surface of the filter screen 4.

[0024] In one embodiment of the present invention, multiple elastic rods 82 are installed at equal angles on the outer wall of the synchronous disk 81. The elastic rods 82 are made of stainless steel spring rods or springs with a polyurethane layer. The multiple elastic rods 82 rotate synchronously with the synchronous disk 81. The distance between the end of the elastic rod 82 and the synchronous disk 81 is smaller than the distance between the synchronous disk 81 and the bottom surface of the filter screen 4, so that the striking ball 83 can contact the bottom surface of the filter screen 4 when the elastic rod 82 rotates. The elastic buffer of the elastic rod 82 will effectively reduce the rigid impact when the striking ball 83 contacts the filter screen 4.

[0025] In one embodiment of the present invention, the outer wall of the processing box 1 is provided with a slag discharge port adapted to the collection frame 9, and the inner wall of the processing box 1 is provided with a baffle 92 located above the collection frame 9. The top surface of the baffle 92 is designed to be inclined towards the drain plate 90. The sealing door 91 is located outside the slag discharge port. A handle 93 is installed at the end of the collection frame 9 near the sealing door 91. The top surface of the drain plate 90 and the outer wall of the pressure roller 13 are both designed to be adapted to be inclined. The top surface of the inclined baffle 92 guides solid impurities to slide down towards the drain plate 90. The handle 93 makes it easy for the operator to pull the collection frame 9. The top surface of the drain plate 90 and the inclined surface of the outer wall of the pressure roller 13 cooperate with each other.

[0026] In one embodiment of the present invention, the telescopic frames are all located on the side of the baffle 71 near the drain rack 7, and two sets of telescopic frames are provided at the bottom of the transmission frame 5. The telescopic frame includes a connecting seat 10 installed at the bottom of the transmission frame 5 and above the drain plate 90, a telescopic rod 11 installed at the bottom of the connecting seat 10, and a mounting seat 12 installed at the bottom of the telescopic rod 11. The outer wall of the mounting seat 12 is rotatably connected to the pressure roller 13. A spring 14 connected to the mounting seat 12 and the connecting seat 10 is sleeved on the outer wall of the telescopic rod 11. The connecting seat 10 provides an installation position for the telescopic rod 11. The spring 14 applies an elastic force to the mounting seat 12 in the direction of the drain plate 90, so that the pressure roller 13 is in contact with the top surface of the drain plate 90. The telescopic rod 11 guides the lifting stroke of the mounting seat 12.

[0027] In one embodiment of the present invention, the unlocking mechanism includes a timing frame 15 installed between two mounting seats 12 and connected to the outer wall of the mounting seats 12. A pull frame 16 is rotatably installed in the middle of the timing frame 15, and a pull rope 17 connected to the inner wall of the sealing door 91 is installed on the top of the pull frame 16. Guide wheels 18 adapted to the pull rope 17 are installed at the bottom of the baffle 71 and the transmission frame 5. When the sealing door 91 is opened, the pull rope 17 is pulled synchronously, so that the pull rope 17 is guided by the guide wheel 18 and pulls the pull frame 16 upward. The pull frame 16 drives the timing frame 15 to move upward, causing the timing frame 15 to drive the mounting seats 12 on both sides to rise upward.

[0028] In one embodiment of the present invention, the outer wall of the connecting seat 10 is provided with a through groove 101 adapted to the pull rope 17, and the outer side of the connecting seat 10 is provided with a connecting wheel 19 that is slidably connected to the pull rope 17; a counterweight 20 is installed on the outer wall of the connecting wheel 19, the counterweight 20 has a U-shaped cross section, when the pull rope 17 is slack, the counterweight 20 drives the connecting wheel 19 to move downward by its own weight, tightening the pull rope 17 and preventing the pull rope 17 from loosening and knotting, the guide wheel 18 guides and constrains the movement trajectory of the pull rope 17, and the through groove 101 provides a passage for the pull rope 17 to pass through.

[0029] Working principle: During the wastewater treatment process of this energy-saving wastewater treatment device for corrugated cardboard production, the wastewater generated by corrugated cardboard production is sent into the tank through the liquid inlet pipe 2 at the top of the treatment tank 1. The wastewater flows downward through the filter screen 4, where solid impurities such as paper scraps and pulp fibers are intercepted. The filtered wastewater is then discharged outward through the bottom drain pipe 3. During operation, the motor is running, and the bidirectional screw 6 will rotate continuously driven by the motor. The rotating bidirectional screw 6 will drive the transmission frame 5 to slide back and forth through the transmission ear 51, so that the transmission frame 5 drives the filter screen 4 to move back and forth synchronously. This avoids the filter screen 4 being fixed in a single position and continuously subjected to water flushing, reducing the probability of local fiber accumulation causing filter screen blockage. During the reciprocating movement of the transmission frame 5, the drive wheel 8 at the bottom of the transmission frame 5 will move synchronously with it, causing the drive wheel 8 to roll along the top surface of the baffle 71 of the drain rack 7. At this time, the friction texture on the top inclined surface of the baffle 71 will drive the drive wheel 8 to rotate, causing the drive wheel 8 to drive the coaxial synchronous disk 81 to rotate together. Meanwhile, the multiple sets of elastic rods 82 on the outer wall of the synchronous disc 81 will rotate synchronously, causing the striking balls 83 at the ends of the elastic rods 82 to strike the bottom surface of the filter screen 4 one by one in a cycle, shaking off the pulp impurities adhering to the mesh of the filter screen, further reducing the probability of the filter screen 4 becoming clogged; at the same time, the filter screen 4 is arranged at an angle, and with the vibration generated by the striking, it guides the intercepted solid impurities to the outside, so that the solid impurities fall down onto the drain plate 90 inside the collection frame 9; While the transmission frame 5 moves back and forth, it will drive the telescopic frame composed of its bottom connecting seat 10, telescopic rod 11, mounting seat 12 and pressure roller 13 to move synchronously, so that the pressure roller 13 rolls back and forth on the top surface of the drain plate 90, and rolls and crushes the solid debris accumulated on the drain plate 90, squeezing out the water trapped inside the impurities, and further drying and dehydrating the impurities. During the reciprocating movement of the telescopic frame following the transmission frame 5, the tension of the pull rope 17 will change. When the pull rope 17 is in a slack state, the counterweight 20 will drive the connecting wheel 19 to move downward by its own weight, thereby tightening the pull rope 17, preventing the pull rope 17 from becoming loose and knotted, and ensuring that the subsequent actions of the unlocking mechanism can be executed normally. At the same time, the guide wheel 18 will guide and constrain the movement trajectory of the pull rope 17. When there is a lot of debris inside the collection frame 9 and it is necessary to remove the collection frame 9 for cleaning, first turn off the motor, the double screw 6 stops running, and the transmission frame 5 stops reciprocating. At this time, the rotating striking mechanism composed of the drive wheel 8, the synchronous disc 81 and the striking ball 83 stops striking. Next, the sealing door 91 on the outer wall of the processing box 1 is opened outward. When the sealing door 91 is opened, the pull rope 17 will be pulled simultaneously. After the pull rope 17 is guided by the guide wheel 18, it will pull the pull frame 16 upward. The pull frame 16 will drive the synchronous frame 15 to move upward, so that the synchronous frame 15 will drive the mounting seats 12 on both sides to rise upward. At the same time, the mounting seats 12 will compress the spring 14 simultaneously. During this process, the telescopic rod 11 plays a guiding and limiting role on the lifting stroke of the mounting seat 12. When the mounting base 12 is raised, it will drive the pressure roller 13 to rise together until the pressure roller 13 moves to the position above the collection frame 9 and no longer interferes with the pulling of the collection frame 9. At this time, the operator holds the handle 93 and pulls the collection frame 9 out from the slag discharge port of the processing box 1 to clean the solid impurities that have been pressed dry on the drain plate 90. After cleaning, push the collection frame 9 back into the corresponding position inside the treatment box 1, close the sealing door 91 inward, release the tension of the pull rope 17, and allow the compressed spring 14 to rebound and extend, pushing the mounting base 12 to reset downward. At this time, the telescopic rod 11 extends and retracts simultaneously, causing the pressure roller 13 to fall back and adhere to the top surface of the drain plate 90, completing the reset. Then the motor can be restarted. During this process, the treatment box 1 can continue to perform normal processing work, only stopping the operation of shaking solid impurities off the filter screen 4 and the transmission frame 5, without affecting the normal wastewater treatment work.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An energy-saving wastewater treatment device for corrugated cardboard production, comprising a treatment tank (1) and a filter screen (4), characterized in that: The processing box (1) is equipped with a transmission frame (5) and a bidirectional screw (6) adapted to the filter screen (4), as well as a motor. The transmission frame (5) is inclined and fixedly connected to the filter screen (4). The bidirectional screw (6) is threadedly connected to the transmission frame (5) and connected to the motor. The processing box (1) is equipped with a drain rack (7) located below the outer end of the transmission frame (5), and a baffle (71) is installed on the side wall of the drain rack (7). The bottom of the transmission frame (5) is provided with a rotating striking mechanism and a drive wheel (8) that matches the filter screen (4), and the drive wheel (8) is in contact with the top surface of the baffle (71) to drive the rotating striking mechanism to run. The top of the drain frame (7) is provided with a collection frame (9), and a drain plate (90) is installed inside the collection frame (9) to receive solid impurities falling from the transmission frame (5). The bottom of the transmission frame (5) is provided with a telescopic frame, and a pressure roller (13) located above the drain plate (90) is rotatably installed on the outer wall of the end of the telescopic frame to roll the solid impurities on the drain plate (90). The outer wall of the processing box (1) is provided with a sealing door (91) that is compatible with the collection frame (9), and the processing box (1) is provided with an unlocking mechanism connected to the telescopic frame and the sealing door (91), so that when the sealing door (91) is opened, the telescopic frame will drive the pressure roller (13) to move up to the top of the collection frame (9).

2. The energy-saving wastewater treatment device for corrugated cardboard production according to claim 1, characterized in that: The processing box (1) is provided with a liquid inlet pipe (2) and a liquid outlet pipe (3) at the top and bottom respectively, and the liquid inlet pipe (2) is located above the filter screen (4); The transmission frame (5) is slidably connected to the processing box (1), and one end of the transmission frame (5) is equipped with a transmission lug (51) that is threadedly connected to the bidirectional screw (6).

3. The energy-saving wastewater treatment device for corrugated cardboard production according to claim 1, characterized in that: The baffle (71) is located below the end of the transmission frame (5) that is not connected to the filter screen (4), and the top surface of the baffle (71) is designed to be inclined towards the side where the transmission frame (5) is connected to the filter screen (4). The drive wheel (8) is rotatably mounted on the bottom of the transmission frame (5), and the outer wall of the drive wheel (8) is designed with an inclined surface that is adapted to the top surface of the baffle (71). Both the drive wheel (8) and the outer wall of the baffle (71) are provided with friction texture.

4. The energy-saving wastewater treatment device for corrugated cardboard production according to claim 1, characterized in that: The rotating striking mechanism and drive wheel (8) are provided on the bottom surface of the end of the transmission frame (5) that is not connected to the filter screen (4), and the rotating striking mechanism is located below the filter screen (4); The rotating striking mechanism includes a timing disc (81) coaxially mounted with the drive wheel (8), an elastic rod (82) mounted on the outer wall of the timing disc (81), and a striking ball (83) mounted on the outer end of the elastic rod (82).

5. An energy-saving wastewater treatment device for corrugated cardboard production according to claim 4, characterized in that: Multiple elastic rods (82) are installed at equal angles on the outer wall of the synchronization disk (81), and the distance between the end of the elastic rod (82) and the synchronization disk (81) is smaller than the distance between the synchronization disk (81) and the bottom surface of the filter screen (4); The elastic rod (82) is made of stainless steel or is a spring with a polyurethane coating.

6. An energy-saving wastewater treatment device for corrugated cardboard production according to claim 1, characterized in that: The outer wall of the treatment box (1) is provided with a slag discharge port that is compatible with the collection frame (9), and the inner wall of the treatment box (1) is provided with a baffle (92) located above the collection frame (9). The top surface of the baffle (92) is designed to be inclined towards the drain plate (90). The sealing door (91) is located outside the slag discharge port. The end of the collection frame (9) near the sealing door (91) is equipped with a handle (93), and the top surface of the drain plate (90) and the outer wall of the pressure roller (13) are both designed with a suitable slope.

7. An energy-saving wastewater treatment device for corrugated cardboard production according to claim 1, characterized in that: The telescopic frames are all located on the side of the baffle (71) close to the drain rack (7), and two sets of telescopic frames are provided at the bottom of the transmission frame (5); The telescopic frame includes a connecting seat (10) installed at the bottom of the transmission frame (5) and above the drain plate (90), a telescopic rod (11) installed at the bottom of the connecting seat (10), and a mounting seat (12) installed at the bottom of the telescopic rod (11), and the outer wall of the mounting seat (12) is rotatably connected to the pressure roller (13). The telescopic rod (11) is fitted with a spring (14) that is connected to the mounting seat (12) and the connecting seat (10).

8. An energy-saving wastewater treatment device for corrugated cardboard production according to claim 7, characterized in that: The unlocking mechanism includes a timing frame (15) installed between two mounting seats (12) and connected to the outer wall of the mounting seats (12), and a pull frame (16) is rotatably installed in the middle of the timing frame (15), and a pull rope (17) connected to the inner wall of the sealing door (91) is installed on the top of the pull frame (16). The bottom of both the baffle (71) and the transmission frame (5) is equipped with guide wheels (18) that are compatible with the pull rope (17).

9. An energy-saving wastewater treatment device for corrugated cardboard production according to claim 8, characterized in that: The outer wall of the connecting seat (10) is provided with a through groove (101) that is adapted to the pull rope (17), and the outer side of the connecting seat (10) is provided with a connecting wheel (19) that is slidably connected to the pull rope (17). The outer wall of the connecting wheel (19) is fitted with a counterweight (20), and the counterweight (20) has a U-shaped cross-section.

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