Papermaking white water recovery device

Abstract

This invention provides a papermaking white water recovery device, relating to the field of water pollution control and treatment, including a top plate and guide columns. A turntable is rotatably connected to the lower side of the top plate, and a pushing column is fixedly connected to the lower side of the turntable. A vertical frame is fixedly connected to the lower side of the top plate, and a water receiving trough is fixedly connected to the bottom of the vertical frame. A filter plate is fixedly connected to the inner side of the water receiving trough. A pushing spring is nested on the outer side of the guide columns, and a transmission frame is slidably connected to the outer side of the guide columns. A long groove is formed on the upper side of the transmission frame, and the pushing column is embedded in the long groove of the transmission frame. A scraper is fixedly connected to the bottom of the guide columns. Through the arrangement of the turntable, pushing column, transmission frame, guide columns, and scraper, automatic scraping and cleaning of the filter mesh on the upper side of the filter plate is achieved. This solves the problem in traditional white water filtration equipment where the filter plates lack the function of removing pulp fibers and solid waste, causing pulp fibers and solid waste to accumulate on the surface of the filter mesh, resulting in water blockage of the filter plate.

Description

Technical Field

[0001] This invention belongs to the field of water pollution control and treatment, and more specifically, relates to a papermaking white water recovery device. Background Technology

[0002] Papermaking white water is a type of wastewater discharged during the paper forming process. It contains pulp fibers and solid waste. If papermaking white water is discharged directly, it will not only waste water resources but also cause water pollution. Therefore, papermaking white water needs to be recycled and treated.

[0003] Currently, in the wastewater recycling and treatment process of papermaking white water, filter plates in white water filtration equipment are usually used to intercept and filter pulp fibers and solid waste in the papermaking white water, allowing the papermaking white water to pass through the filter mesh of the filter plate and be discharged. However, when traditional white water filtration equipment performs long-term waste interception, the filter plates do not have an automatic removal function for pulp fibers and solid waste. Pulp fibers and solid waste will cover and accumulate on the surface of the filter mesh of the filter plate, causing water permeability blockage of the filter mesh and seriously reducing the filtration efficiency of the filter mesh. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a papermaking white water recovery device, which solves the problem in traditional white water filtration equipment where the filter plate lacks the function of removing pulp fibers and solid waste, causing pulp fibers and solid waste to accumulate on the surface of the filter mesh, resulting in water blockage of the filter plate.

[0005] This invention provides a papermaking white water recycling device, including a frame; a controller is installed on the rear side of the frame, a bracket is fixedly connected to the front side of the frame, and a vertical plate frame is fixedly connected to the front side of the bracket; it also includes a top plate, a guide rod, a guide column, and a waste collection device; a scraper motor is installed on the upper side of the top plate, a transmission gear is installed on the motor shaft of the scraper motor, a turntable is rotatably connected to the center of the lower side of the top plate, a push column is fixedly connected to the lower side of the turntable, a vertical plate frame is fixedly connected to the lower side of the top plate, a water receiving trough is fixedly connected to the bottom end of the vertical plate frame, and a filter plate is fixedly connected to the inner side of the water receiving trough; a bracket is fixedly connected to the left and right ends of the guide rod, a transmission frame is slidably connected to the outer side of the guide rod, an elongated groove is opened on the upper side of the transmission frame, and the push column is embedded in the elongated groove of the transmission frame; a limit plate is fixedly connected to the top end of the guide column, a push spring is nested in the outer side of the guide column, a transmission frame is slidably connected to the outer side of the guide column, and a scraper is fixedly connected to the bottom end of the guide column.

[0006] Furthermore, the waste collection device comprises two sets, each set including a storage trough, an alarm indicator light, a support frame, a lifting rod, an alarm sound, a weighing sensor, and a placement trough; a base plate is fixedly connected to the rear side of the support frame, an alarm sound is installed on the inner side of the support frame, and a placement trough is fixedly connected to the upper side of the support frame; a water collection trough is fixedly connected to the rear side of the placement trough, a weighing sensor is installed on the upper side of the placement trough, a storage trough is placed on the upper side of the weighing sensor, a lifting rod is fixedly connected to the upper side of the storage trough, and an alarm indicator light is installed on the right side of the placement trough.

[0007] Furthermore, the filter plate is an arc-shaped curved plate structure. The upper side of the arc-shaped curved plate structure of the filter plate is densely covered with a large number of vertically penetrating mesh structures. The left and right ends of the arc-shaped curved plate structure of the filter plate are provided with downward inclined slope structures, and the inclined slope structures of the filter plate are vertically opposite to the storage tank.

[0008] Furthermore, the transmission frame is a rectangular frame structure. Two sets of circular through holes are opened on the left side of the rectangular frame structure near the front and rear ends. The guide rod is inserted into the circular through holes on the left side of the transmission frame. Two sets of vertically penetrating through holes are opened on the lower side of the rectangular frame structure. The guide post is inserted into the through holes on the lower side of the transmission frame.

[0009] Furthermore, the outer surface of the turntable is surrounded by an external tooth structure, and the transmission gear is meshed with the external tooth structure of the turntable.

[0010] Furthermore, the number of the push springs is two sets, and each set of push springs has a scraper fixedly connected to its bottom end and a transmission frame fixedly connected to its top end.

[0011] Furthermore, the storage tank is a rectangular tank structure with an opening on the upper side, and the outer side of the rectangular tank structure of the storage tank is in contact with the tank wall structure.

[0012] Furthermore, the water receiving tank is a tank structure with an opening on the upper side. A circular through hole is provided on the front side of the water receiving tank. The rear end of the circular through hole of the water receiving tank is located on the upper side of the filter plate. A water inlet pipe is fixedly connected to the inner side of the circular through hole of the water receiving tank. An electric water inlet valve is installed at the front end of the water inlet pipe. Four sets of concentric inclined slope structures are provided at the bottom of the water receiving tank. A circular through pipe is provided at the center of the bottom of the water receiving tank. An electric drain valve is installed at the bottom end of the circular through pipe of the water receiving tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, the transmission gear installed on the motor shaft of the scraping motor drives the push column fixedly connected to the lower side of the turntable to rotate around the vertical central axis of the turntable. This causes the push column to push against the groove wall structure of the long groove of the transmission frame. The transmission frame, through the guide column, drives the scraper to scrape and clean the pulp fibers and waste residue accumulated on the upper surface of the filter plate from side to side. This achieves automatic scraping and cleaning of the water filter mesh on the upper side of the filter plate, preventing pulp fibers and waste residue from accumulating and clogging the water filter mesh on the upper side of the filter plate, thereby improving the water permeability and filtration efficiency and solid-liquid separation performance of the filter plate mesh.

[0014] 2. In this invention, the wall structure of the placement tank supports the vertical compression weighing sensor of the storage tank, allowing the weighing sensor to weigh the pulp fibers and waste residue in the storage tank. When the collected weight of pulp fibers and solid waste residue exceeds the preset warning weight in the controller, the controller controls the alarm sounder and alarm indicator light to sound an alarm horn and flash the light, realizing the alarm prompt function of excessive pulp fibers and waste residue in the storage tank. This allows the operator to know the collection status of pulp fibers and solid waste residue in the storage tank in a timely and accurate manner, and to clean it up, preventing the pulp fibers and waste residue in the storage tank from overflowing and leaking out. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a rear view structural schematic diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the right-side structure of the present invention.

[0018] Figure 4 This is a schematic diagram of the rear side structure of the present invention.

[0019] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 6 This is the invention Figure 5 Enlarged structural diagram of part A in the middle.

[0021] Figure 7 This is the invention Figure 5 Enlarged structural diagram of part B in the middle.

[0022] Figure 8 This is a schematic diagram of the waste collection device of the present invention.

[0023] Figure 9 This is a schematic diagram of the waste collection device of the present invention from the right side.

[0024] Figure 10 This is an exploded structural diagram of the waste collection device of the present invention.

[0025] Figure label: 1. Top slab; 2. Base plate; 3. Turntable; 4. Scraper motor; 5. Guide rod; 6. Electric drain valve; 7. Erecting frame; 8. Bracket; 9. Scraper; 10. Push column; 11. Transmission frame; 12. Push spring; 13. Limit plate; 14. Guide column; 15. Transmission gears; 16. Catchment trough; 17. Waste collection device; 1701. Storage tank; 1702. Alarm indicator light; 1703. Support frame; 1704. Lifting rod; 1705. Alarm sounder; 1706. Weighing sensor; 1707. Placement trough; 18. Electric inlet valve; 19. Water inlet pipe; 20. Filter plate; 21. Controller; 22. Rack. Detailed Implementation

[0026] like Figures 1 to 10 As shown, the present invention provides a papermaking white water recycling device, including a frame 22; a controller 21 is installed on the rear side of the frame 22, the controller 21 is a PLC controller, a bracket 8 is fixedly connected to the front side of the frame 22, and a vertical plate frame 7 is fixedly connected to the front side of the bracket 8; it also includes a top plate 1, a guide rod 5, a guide column 14, and a waste collection device 17; a scraper motor 4 is installed on the upper side of the top plate 1, a transmission gear 15 is installed on the motor shaft of the scraper motor 4, a turntable 3 is rotatably connected to the center position of the lower side of the top plate 1, a pusher column 10 is fixedly connected to the lower side of the turntable 3, and a pusher column 10 is fixedly connected to the lower side of the top plate 1. A vertical plate frame 7 is fixedly connected, and a water receiving tank 16 is fixedly connected to the bottom end of the vertical plate frame 7. A filter plate 20 is fixedly connected to the inner side of the water receiving tank 16. A bracket 8 is fixedly connected to both the left and right ends of the guide rod 5. A transmission frame 11 is slidably connected to the outer side of the guide rod 5. A long groove is opened on the upper side of the transmission frame 11, and a pusher 10 is embedded in the long groove of the transmission frame 11. A limit plate 13 is fixedly connected to the top end of the guide column 14. A pusher spring 12 is nested on the outer side of the guide column 14. The transmission frame 11 is slidably connected to the outer side of the guide column 14. A scraper 9 is fixedly connected to the bottom end of the guide column 14.

[0027] In this embodiment of the invention, there are two sets of waste collection devices 17. Each set of waste collection devices 17 includes a storage tank 1701, an alarm indicator light 1702, a support frame 1703, a lifting rod 1704, an alarm sound 1705, a weighing sensor 1706, and a placement slot 1707. A base plate 2 is fixedly connected to the rear side of the support frame 1703, and an alarm sound 1705 is installed on the inner side of the support frame 1703. A placement slot 1707 is fixedly connected to the upper side of the support frame 1703. A water receiving tank 16 is fixedly connected to the rear side of the placement slot 1707, and a weighing sensor 1706 is installed on the upper side of the placement slot 1707. The storage tank 1701 is placed on the upper side of the weighing sensor 1706, and a lifting rod 1704 is fixedly connected to the upper side of the storage tank 1701. An alarm indicator light 1702 is installed on the right side of the storage tank 1707. A weighing sensor 1706 weighs the collected pulp fiber and solid waste in the storage tank 1701. The weighing sensor 1706 transmits the collected pulp fiber and solid waste weight signal to the controller 21 through a wire. When the collected pulp fiber and solid waste weight is higher than the preset warning weight in the controller 21, the controller 21 controls the alarm sounder 1705 to sound an alarm through a wire. The controller 21 also controls the alarm indicator light 1702 to flash light through a wire, so that the operator can know the collection status of pulp fiber and solid waste in the storage tank 1701 in a timely and accurate manner, and avoid excessive accumulation of pulp fiber and solid waste in the storage tank 1701 and overflow from the opening of the storage tank 1701.

[0028] In this embodiment of the invention, the filter plate 20 is an arc-shaped curved plate structure. The upper side of the arc-shaped curved plate structure of the filter plate 20 is densely covered with a large number of vertically penetrating mesh structures. When the papermaking white water falls to the upper side of the filter plate 20, the densely covered mesh structures on the upper side of the filter plate 20 intercept the pulp fibers and waste residue in the papermaking white water, completing the solid-liquid separation of the papermaking white water. The left and right ends of the arc-shaped curved plate structure of the filter plate 20 are provided with downward inclined slope structures. The inclined slope structures of the filter plate 20 are vertically opposite to the storage tank 1701. When the scraper 9 moves the pulp fibers and waste residue to the inclined slope structure of the filter plate 20, the pulp fibers and waste residue automatically fall into the storage tank 1701 along the inclined slope structure of the filter plate 20 by gravity, avoiding the accumulation of pulp fibers and waste residue at the left and right ends of the filter plate 20 back into the arc-shaped curved plate structure of the filter plate 20.

[0029] In this embodiment of the invention, the transmission frame 11 is a rectangular frame structure. Two sets of circular through holes are provided on the left side of the rectangular frame structure near the front and rear ends. Guide rods 5 are inserted into the circular through holes on the left side of the transmission frame 11. Two sets of vertically penetrating through holes are provided on the lower side of the rectangular frame structure of the transmission frame 11. Guide posts 14 are inserted into the through holes on the lower side of the transmission frame 11. Guide rods 5 provide horizontal limiting support for the left and right horizontal movement of the transmission frame 11 through the circular through holes on the left side of the transmission frame 11. Guide posts 14 provide horizontal support for the scraper 9 through the through holes on the lower side of the transmission frame 11. This ensures that during the left and right movement of the scraper 9 with the transmission frame 11, the bottom end of the scraper 9 is parallel and attached to the upper side of the filter plate 20, preventing the scraper 9 from tilting and lifting during left and right movement, which could lead to the accumulation of pulp fibers and solid waste on the upper side of the filter plate 20 and result in missed scraping.

[0030] In this embodiment of the invention, the outer side of the turntable 3 is surrounded by an external tooth structure, and the transmission gear 15 is meshed with the external tooth structure of the turntable 3. The scraping motor 4 drives the turntable 3 to rotate on the lower side of the top plate 1 through the transmission gear 15, so that the pushing column 10 fixedly connected to the lower side of the turntable 3 pushes the groove wall structure of the long groove of the transmission frame 11, and the transmission frame 11 drives the scraper 9 to move back and forth along the guide rod 5 through the guide column 14. The scraper 9 pushes the pulp fiber and solid waste on the upper side of the filter plate 20 from the inclined structure at the left and right ends of the filter plate 20, so as to avoid the pulp fiber and solid waste accumulating on the upper side of the arc-shaped curved plate structure of the filter plate 20 to form mesh blockage, thereby improving the solid-liquid filtration and separation efficiency of the filter plate 20 for papermaking white water.

[0031] In this embodiment of the invention, there are two sets of push springs 12. Each set of push springs 12 has a scraper 9 fixedly connected to its bottom end and a transmission frame 11 fixedly connected to its top end. The push springs 12 drive the scraper 9 to fit tightly against the upper side of the filter plate 20 through their own elastic force, so that the scraper 9 always fits against the arc surface of the filter plate 20 during the left and right movement, avoiding the scraping gap between the scraper 9 and the filter plate 20, and ensuring the scraper 9 has a clean scraping effect on the upper side of the arc surface of the filter plate 20 for pulp fibers and waste residue.

[0032] In this embodiment of the invention, the storage tank 1701 is a rectangular tank structure with an opening on the upper side. The outer side of the rectangular tank structure of the storage tank 1701 is in contact with the wall structure of the placement tank 1707. The placement tank 1707 provides horizontal support for the storage tank 1701, allowing the lower side of the storage tank 1701 to vertically press against the weighing sensor 1706. This prevents the storage tank 1701 from shifting left or right, tilting, or being unbalanced, which could cause weight detection errors in the weighing sensor 1706. This ensures the accuracy of the weighing sensor 1706 in weighing the pulp fibers and waste residue in the storage tank 1701.

[0033] In this embodiment of the invention, the water receiving tank 16 is a tank structure with an open upper side. A circular through hole is provided on the front side of the water receiving tank 16. The rear end of the circular through hole of the water receiving tank 16 is located on the upper side of the filter plate 20. A water inlet pipe 19 is fixedly connected to the inner side of the circular through hole of the water receiving tank 16. An electric water inlet valve 18 is installed at the front end of the water inlet pipe 19. Four sets of centripetal inclined slope structures are provided at the bottom of the water receiving tank 16. A circular through pipe is provided at the center of the bottom of the water receiving tank 16. An electric drain valve 6 is installed at the bottom end of the circular through pipe of the water receiving tank 16. By utilizing the four sets of centripetal inclined slope structures at the bottom of the water receiving tank 16, the filtered papermaking white water can converge along the center of the slope and flow into the circular through pipe for discharge, eliminating the horizontal stagnation surface at the bottom of the water receiving tank 16 and preventing the filtered papermaking white water from accumulating at the bottom of the water receiving tank 16.

[0034] Specific usage and functions of this invention: In the filtration process for recovering papermaking white water, the operator activates the controller 21. The controller 21, via wires, opens the electric drain valve 6 and the electric inlet valve 18. The papermaking white water flows through the electric inlet valve 18 and into the receiving tank 16 via the inlet pipe 19, allowing it to continuously flow onto the upper surface of the filter plate 20. At this time, the densely distributed mesh on the surface of the filter plate 20 performs solid-liquid filtration and separation on the incoming papermaking white water. Pulp fibers and solid waste mixed in the papermaking white water are trapped on the upper side of the filter plate 20. The filtered white water flows through the mesh and falls to the bottom of the receiving tank 16. The filtered white water then flows along the receiving tank 16... The four sets of concentric inclined surfaces at the bottom of tank 6 converge at the circular pipe of receiving tank 16. The filtered white water is discharged through the electric drain valve 6 installed at the bottom of the circular pipe of receiving tank 16, thus completing the filtration treatment of papermaking white water recovery. During the filtration of papermaking white water by filter plate 20, controller 21 controls the scraper motor 4 to drive the transmission gear 15 to rotate through the wire. Since the transmission gear 15 is meshed with the external tooth structure of turntable 3, the transmission gear 15 drives the push column 10 fixedly connected to the lower side of turntable 3 to rotate and move around the vertical central axis of turntable 3. At this time, the push column 10 pushes the groove wall of the long groove of transmission frame 11. The pusher 10 drives the transmission frame 11 to move back and forth along the guide rod 5. The guide column 14, which is inserted into the inner side of the circular through hole on the lower side of the transmission frame 11, drives the scraper 9 to move back and forth. The pusher spring 12 pushes the scraper 9 to always be in contact with the arc-shaped upper surface of the filter plate 20 through its own elastic force. The scraper 9 scrapes and pushes the pulp fibers and waste residue intercepted and accumulated on the upper surface of the filter plate 20 to the inclined structure at the left and right ends of the filter plate 20. Then, the pulp fibers and waste residue fall automatically into the storage tank 1701 along the inclined structure of the filter plate 20 by gravity for collection. At this time, the weighing sensor 1706 monitors the upper side. The storage tank 1701 is used for weight detection. The weighing sensor 1706 transmits the weight detection signal to the controller 21 through a wire. When the weight of pulp fiber and solid waste collected in the storage tank 1701 reaches the preset warning weight value of the controller 21, the controller 21 controls the alarm sounder 1705 to sound an alarm through a wire. The controller 21 also controls the alarm indicator light 1702 to flash light through a wire to remind the operator to clean the pulp fiber and solid waste in the storage tank 1701 in time, so as to avoid excessive accumulation of pulp fiber and solid waste and overflow to the outside of the storage tank 1701, which would pollute the wastewater treatment workshop environment.

Claims

1. A papermaking white water recycling device, comprising a frame (22); a controller (21) is installed on the rear side of the frame (22), a bracket (8) is fixedly connected to the front side of the frame (22), and a vertical plate frame (7) is fixedly connected to the front side of the bracket (8); characterized in that: It also includes a top plate (1), a guide rod (5), a guide column (14), and a waste collection device (17); a scraper motor (4) is installed on the upper side of the top plate (1), a transmission gear (15) is installed on the motor shaft of the scraper motor (4), a turntable (3) is rotatably connected to the center of the lower side of the top plate (1), a pusher column (10) is fixedly connected to the lower side of the turntable (3), a vertical plate frame (7) is fixedly connected to the lower side of the top plate (1), a water receiving tank (16) is fixedly connected to the bottom end of the vertical plate frame (7), and a filter plate is fixedly connected to the inner side of the water receiving tank (16). (20); The left and right ends of the guide rod (5) are fixedly connected to the bracket (8), and the outer side of the guide rod (5) is slidably connected to the transmission frame (11). The upper side of the transmission frame (11) is provided with a long groove, and the push column (10) is embedded in the long groove of the transmission frame (11); The top end of the guide column (14) is fixedly connected to the limit plate (13), the outer side of the guide column (14) is nested with the push spring (12), the outer side of the guide column (14) is slidably connected to the transmission frame (11), and the bottom end of the guide column (14) is fixedly connected to the scraper (9).

2. The papermaking white water recovery device as described in claim 1, characterized in that: The waste collection device (17) includes a storage tank (1701), an alarm indicator light (1702), a support frame (1703), a lifting rod (1704), an alarm sound (1705), a weighing sensor (1706), and a placement slot (1707); a base plate (2) is fixedly connected to the rear side of the support frame (1703), an alarm sound (1705) is installed on the inner side of the support frame (1703), and the upper side of the support frame (1703) is... A placement trough (1707) is fixedly connected to the surface of the placement trough (1707); a water receiving trough (16) is fixedly connected to the rear side of the placement trough (1707); a weighing sensor (1706) is installed on the upper side of the placement trough (1707); a storage trough (1701) is placed on the upper side of the weighing sensor (1706); a lifting rod (1704) is fixedly connected to the upper side of the storage trough (1701); and an alarm indicator light (1702) is installed on the right side of the placement trough (1707).

3. The papermaking white water recovery device as described in claim 1, characterized in that: The upper side of the filter plate (20) is densely covered with a large number of vertically penetrating mesh structures. The left and right ends of the filter plate (20) are provided with downwardly inclined slope structures. The slope structures of the filter plate (20) are vertically opposite to the storage tank (1701).

4. The papermaking white water recovery device as described in claim 1, characterized in that: Two sets of circular through holes are provided on the left side of the transmission frame (11) near the front and rear ends. The guide rod (5) is inserted into the circular through hole on the left side of the transmission frame (11). Two sets of vertical through holes are provided on the lower side of the rectangular frame structure of the transmission frame (11). The guide column (14) is inserted into the through hole on the lower side of the transmission frame (11).

5. The papermaking white water recovery device as described in claim 1, characterized in that: The outer side of the turntable (3) is surrounded by an external tooth structure, and the transmission gear (15) is meshed with the external tooth structure of the turntable (3).

6. The papermaking white water recovery device as described in claim 1, characterized in that: The bottom end of each push spring (12) is fixedly connected to a scraper (9), and the top end of the push spring (12) is fixedly connected to a transmission frame (11).

7. The papermaking white water recovery device as described in claim 2, characterized in that: The outer side of the storage tank (1701) is in contact with the wall structure of the placement tank (1707).

8. The papermaking white water recovery device as described in claim 1, characterized in that: The front side of the water receiving tank (16) is provided with a circular through hole. The rear end of the circular through hole of the water receiving tank (16) is located on the upper side of the filter plate (20). The inner side of the circular through hole of the water receiving tank (16) is fixedly connected to the water inlet pipe (19). The front end of the water inlet pipe (19) is equipped with an electric water inlet valve (18). The bottom of the water receiving tank (16) is provided with four sets of centripetal inclined slope structures. The center of the bottom of the water receiving tank (16) is provided with a circular through pipe that runs vertically through the bottom. The bottom end of the circular through pipe of the water receiving tank (16) is equipped with an electric drain valve (6).

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