Fiber recovery machine for multi-stage filtration of pulping wastewater

Abstract

The utility model relates to the field of waste recovery, disclose pulping wastewater multistage filtration's fiber recovery machine, including pulping wastewater multistage filtration's fiber recovery machine, including work frame, the front side fixedly connected with locking plate of work frame, the outside screw thread connection of locking plate has four screws, the front side sliding connection with sealing cover of locking plate, the front side fixedly connected with support plate a of sealing cover, the top fixedly connected with drive assembly of support plate a, the inside screw thread connection of sealing cover has fixed column, the inside fixed connection of drive assembly has limit slot board, the inside sliding connection of limit slot board has fixed three arm lever, the rear side fixedly connected with water storage pipe of locking plate, the inside of water storage pipe is provided with filter screen. In the utility model, through the piston rod push fixed three arm lever both sides arm's sliding and rotation drive the rest of the arm to expand fixed, conversely also can disassemble, reach the portable disassembly of filter screen, easy to overhaul as a whole.

Description

Technical Field

[0001] This utility model relates to the field of waste recycling, and in particular to a fiber recycling machine for multi-stage filtration of pulping wastewater. Background Technology

[0002] The fiber recovery machine for multi-stage filtration of pulping wastewater is a highly efficient and energy-saving solid-liquid separation device. It achieves fiber recovery and water purification through microfiltration technology and is widely used in the papermaking and related industries. Its core advantages lie in its high recovery rate, low operating costs, and compatibility with multi-stage processes.

[0003] The working principle of the fiber recovery machine for multi-stage filtration of pulping wastewater is mainly based on rotary microporous filtration and mechanical separation technology. Its core process is as follows: fiber-containing wastewater enters a closed rotary mesh cage through the inlet pipe. During the rotation of the mesh cage, the liquid is discharged from the micropores of the filter screen, and the fiber is trapped on the inner wall of the filter screen. When the mesh cage rotates to the top, the fiber is separated from the filter screen by gravity or with the assistance of the spray system and falls into the slurry hopper of the pulp conveying pipe. Finally, the fiber is recovered through the slurry outlet, realizing continuous solid-liquid separation.

[0004] However, existing technologies still have certain problems. When the equipment malfunctions and needs repair, the integrated design makes disassembly and assembly too cumbersome for workers and frequently causes safety issues. Therefore, a fiber recycling machine with multi-stage filtration for pulping wastewater is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fiber recovery machine for multi-stage filtration of pulping wastewater, aiming to improve the problem of overly cumbersome disassembly and assembly of some filter screens in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fiber recovery machine for multi-stage filtration of pulping wastewater includes a working frame. A locking plate is fixedly connected to the front side of the working frame. Four screws are threaded to the outer side of the locking plate. A sealing cover is slidably connected to the front side of the locking plate. A support plate a is fixedly connected to the front side of the sealing cover. A drive assembly is fixedly connected to the top of the support plate a. A fixing column is threaded to the inner side of the sealing cover. A limiting groove plate is fixedly connected to the inner side of the drive assembly. A three-arm fixing rod is slidably connected to the inner side of the limiting groove plate. A water storage pipe is fixedly connected to the rear side of the locking plate. A filter screen is installed inside the water storage pipe.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a cylinder, the bottom of which is placed on top of the support plate a, and a piston rod is fixedly connected to the drive end of the cylinder.

[0010] As a further description of the above technical solution:

[0011] The sealing cap is threaded with four screws on the outside, the fixing three-arm rod is rotatably connected to a fixing post on the inside, the piston rod is fixedly connected to the outside of the limiting groove plate on the inside, and the piston rod is rotatably connected to the inside of the filter screen on the outside.

[0012] As a further description of the above technical solution:

[0013] Two support plates b are fixedly connected to the rear side of the work frame. Two large motors are fixedly connected to the top of each of the two support plates b. Threaded shafts are fixedly connected to the drive ends of the two large motors. A filter screen is threadedly connected to the front side of the threaded shaft. A sliding plate is slidably connected to the top of the work frame. A water pump is fixedly connected to the top of the sliding plate.

[0014] As a further description of the above technical solution:

[0015] The bottom of the two bottom water storage pipes is provided with water delivery holes, and the top of the two top water storage pipes is provided with water inlet holes. The bottom of the two top water storage pipes is fixedly connected to a vertical water delivery pipe, and the inner side of the two vertical water delivery pipes is fixedly connected to a horizontal water delivery pipe. The inner side of the left vertical water delivery pipe is fixedly connected to a one-way valve a, the inner side of the horizontal water delivery pipe is fixedly connected to a one-way valve b, the inner side of the right vertical water delivery pipe is fixedly connected to a one-way valve c, and the top of the work frame is fixedly connected to an automatic control component.

[0016] As a further description of the above technical solution:

[0017] The automatic control component includes a pressure sensor, the bottom of which is fixedly connected to the top inner side of the work frame. A wire is electrically connected to the left side of the pressure sensor, and a small motor is electrically connected to the far end of the wire. A baffle a is fixedly connected to the drive end of the small motor.

[0018] As a further description of the above technical solution:

[0019] The one-way valves a, b, c, and d all include a sealing ring. The outer side of the sealing ring is fixedly connected to the inner side of the vertical water supply pipe. A baffle b is slidably connected to the inner side of the vertical water supply pipe. A spring is provided on the inner side of the horizontal water supply pipe. A fixing ring is fixedly connected to the inner side of the vertical water supply pipe. The bottom of the sealing ring contacts the top of the baffle b. The top of the spring is fixedly connected to the bottom of the baffle b. The top of the fixing ring is fixedly connected to the bottom of the spring.

[0020] As a further description of the above technical solution:

[0021] A water storage tank is fixedly connected to the right side of the work frame, and an L-shaped water supply pipe is fixedly connected to the top left side of the water storage tank. A sealing ring is fitted at the bottom of the L-shaped water supply pipe. Four bottom water supply pipes are fixedly connected to the bottom outer side of the work frame. The outer side of the baffle a contacts the inner side of the horizontal water supply pipe. The outer side of the horizontal water supply pipe is fixedly connected to the inner side of the water storage tank. The bottom of the L-shaped water supply pipe contacts the top of the sliding plate. The bottom of the sealing ring contacts the top of the sliding plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the cylinder pushes the fixing three-arm rod to slide in the limiting groove plate, thereby causing the fixing three-arm rod to rotate clockwise. The arm at the top of the fixing three-arm rod expands outward and locks the locking plate, so that the filter screen and the cylinder are conveniently fixed, and the whole device can be inspected and maintained more quickly and conveniently.

[0024] 2. In this utility model, the slurry is detected by a pressure sensor, and the incompletely utilized slurry is coarsely filtered again, thereby improving the overall slurry recovery rate. The one-way valves a, b, c, and d are set to ensure the one-way flow of the liquid and avoid blockage of the overall water flow due to slurry backflow. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of the detachable rotating filter screen of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0027] Figure 3 This is a cross-sectional schematic diagram of the detachable and fixed structure of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the water flow direction in the pipeline of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0029] Figure 5 This is a cross-sectional schematic diagram of the water conveying pipeline of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0030] Figure 6 This is a three-dimensional schematic diagram of the automatic control components of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0031] Figure 7This is a cross-sectional schematic diagram of the one-way valve of the fiber recovery machine for multi-stage filtration of pulping wastewater proposed in this utility model.

[0032] Legend:

[0033] 1. Working frame; 2. Locking plate; 3. Screw; 4. Sealing cover; 5. Support plate a; 6. Cylinder; 7. Piston rod; 8. Fixing column; 9. Fixing three-arm rod; 10. Limiting groove plate; 11. Filter screen; 12. Water storage pipe; 13. Large motor; 14. Support plate b; 15. Sliding plate; 16. Water pump; 17. Water inlet; 18. Vertical water supply pipe; 19. Pressure sensor; 20. Wire; 21. Small motor; 22. Baffle a; 23. Horizontal water supply pipe; 24. One-way valve a; 25. One-way valve b; 26. One-way valve c; 27. One-way valve d; 28. Water storage tank; 29. ​​L-shaped water supply pipe; 30. Sealing ring; 31. Water supply hole; 32. Bottom water supply pipe; 33. Sealing ring; 34. Baffle b; 35. Spring; 36. Fixing ring; 37. Threaded shaft. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 , Figure 2 , Figure 3In one embodiment of this utility model: a locking plate 2 is fixedly connected to the front side of the work frame 1, ensuring sufficient strength and facilitating the installation and connection of subsequent components. Four screws 3 are threadedly connected to the outer side of the locking plate 2 to firmly fix the relevant components to the locking plate 2. A sealing cover 4 is slidably connected to the front side of the locking plate 2, effectively preventing dust, moisture and other external impurities from entering the internal structure. A support plate a5 is fixedly connected to the front side of the sealing cover 4, and a drive assembly is fixedly connected to the top of the support plate a5 to provide power support for the operation of the device. A fixing post 8 is threadedly connected to the inner side of the sealing cover 4, and a limit groove plate 10 is fixedly connected to the inner side of the drive assembly. A three-arm rod 9 for fixing is slidably connected to the inner side of the limit groove plate 10. A water storage pipe 12 is fixedly connected to the rear side of the locking plate 2, and a filter screen 11 is provided on the inner side of the water storage pipe 12. The drive assembly includes an air... Cylinder 6, the bottom of cylinder 6 is placed on top of support plate a5. Piston rod 7 is fixedly connected to the drive end of cylinder 6. One end of piston rod 7 is fixedly connected to the piston inside cylinder 6, and the other end plays an important role in connecting other components. Four screws 3 are threadedly connected to the outer side of sealing cover 4. Fixing three-arm rod 9 is rotatably connected to fixing post 8. Fixing three-arm rod 9 is Y-shaped. The ends of the three arms are used to connect different components. Fixing three-arm rod 9 can rotate flexibly around fixing post 8 to adapt to working requirements. The inner side of piston rod 7 is fixedly connected to the outer side of limiting groove plate 10. The outer side of piston rod 7 is rotatably connected to the inner side of filter screen 11. Part of the structure of fixing three-arm rod 9 is embedded in the limiting groove. Through cooperation with limiting groove plate 10, the movement trajectory of fixing three-arm rod 9 is restricted, so that it can only slide and rotate in a specific direction.

[0036] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7The automatic control component includes a pressure sensor 19, which can sensitively detect pressure changes and accurately convert physical pressure signals into electrical signals. The bottom of the pressure sensor 19 is fixedly connected to the top inner side of the work frame 1. A wire 20 is electrically connected to the left side of the pressure sensor 19, and a small motor 21 is electrically connected to the far end of the wire 20, ultimately transmitting the signal to the far-end small motor 21. A baffle a22 is fixedly connected to the drive end of the small motor 21. When the small motor 21 receives the electrical signal from the pressure sensor 19, the rotor inside the small motor 21 starts, driving the shaft to rotate, which in turn drives the baffle a22 to rotate synchronously. One-way valves a24, b25, and c26 are also included. Each one-way valve d27 includes a sealing ring 33. The outer side of the sealing ring 33 is fixedly connected to the inner side of the vertical water supply pipe 18. A baffle b34 is slidably connected to the inner side of the vertical water supply pipe 18. A spring 35 is provided on the inner side of the horizontal water supply pipe 23. A fixing ring 36 is fixedly connected to the inner side of the vertical water supply pipe 18. The bottom of the sealing ring 33 is in contact with the top of the baffle b34. The top of the spring 35 is fixedly connected to the bottom of the baffle b34. The top of the fixing ring 36 is fixedly connected to the bottom of the spring 35. Under normal conditions, the spring 35 is in a compressed state, generating an upward elastic force on the baffle b34, so that the top of the baffle b34 is in close contact with the bottom of the sealing ring 33, forming a seal and preventing the water from flowing backward. When water flows into the vertical water pipe 18 from a specific direction and the pressure reaches a certain value, the water pressure overcomes the elastic force of the spring 35, pushes the baffle b34 to slide downward, opens the passage, and the water passes through smoothly; when the water pressure disappears or reverses, the spring 35 quickly restores its deformation, pushes the baffle b34 to move upward, and re-fits with the sealing ring 33, realizing the one-way conduction function.

[0037] Reference Figures 1 to 7Two support plates b14 are fixedly connected to the rear side of the work frame 1. Two large motors 13 are fixedly connected to the top of each support plate b14. The two support plates b14 provide a solid support foundation for the large motors 13 above, ensuring the stability during operation. Threaded shafts 37 are fixedly connected to the drive ends of the two large motors 13. A filter screen 11 is threadedly connected to the front of the threaded shaft 37. When the large motor 13 is powered on, it drives the threaded shaft 37 to rotate at high speed, causing the filter screen 11 to rotate. When the large motor 13 rotates in the opposite direction, the threaded shaft 37 can be separated from the filter screen 11. A sliding plate 15 is slidably connected to the top of the work frame 1. A water pump 16 is fixedly connected to the top of the sliding plate 15, enabling efficient water delivery during operation. A water storage tank 28 is fixedly connected to the right side of the work frame 1. An L-shaped... The bottom of the L-shaped water pipe 29 is fitted with a sealing ring 30. The sealing ring 30 has good sealing performance and can effectively prevent water leakage. Four bottom water pipes 32 are fixedly connected to the bottom of the outer side of the work frame 1. One end of the pipe is connected to the water system inside the work frame 1, and the other end is connected to the outside for discharging or transporting water. The outer side of the baffle a22 is in contact with the inner side of the horizontal water pipe 23. When the small motor 21 drives the baffle a22 to rotate, the baffle a22 can accurately control the opening and closing of the horizontal water pipe 23. The outer side of the horizontal water pipe 23 is fixedly connected to the inner side of the water storage tank 28. The bottom of the L-shaped water pipe 29 is in contact with the top of the sliding plate 15, and the bottom of the sealing ring 30 is in contact with the top of the sliding plate 15. The sealing ring 30 plays a good sealing role and prevents water from leaking from the contact point between the L-shaped water pipe 29 and the sliding plate 15.

[0038] Working principle: First, place the entire device on the ground, push the filter screen 11 into the water storage pipe 12 and rotate it to fix it to 37. Then, insert the fixing three-arm rod 9, start the cylinder 6, the cylinder 6 pushes the piston rod 7, the top fixing three-arm rod 9 rotates clockwise, the arm of the fixing three-arm rod 9 in the limiting groove plate 10 slides outward, the arm of the fixing three-arm rod 9 on the fixing column 8 rotates clockwise, the remaining arm of the fixing three-arm rod 9 locks the locking plate 2, that is, the fixing cylinder 6 also prevents the filter screen 11 from sliding back and forth. When disassembly is required, restart the cylinder 6, the top fixing three-arm rod 9 rotates counterclockwise, take out the fixing three-arm rod 9 and rotate to disassemble the filter screen 11 for maintenance.

[0039] After the filter screen 11 is assembled, slurry is injected from the top. After injection, the sliding plate 15 is pushed into the working frame 1, and the large motor 13 is started. The large motor 13 drives the filter screen 11 to rotate, coarsely collecting coarse fibers. The water pump 16 is started, squeezing the slurry at the top into the water inlet 17. After filtration, the slurry is squeezed into the vertical water pipe 18. The slurry is detected by the pressure sensor 19. If too much coarse fiber remains, the small motor 21 is started to close the baffle a22. The slurry flows from the horizontal water pipe 23 into the water storage tank 28. Due to the squeezing of the water pump 16, the slurry will continue to rise into the L-shaped water pipe 29 and flow back into the upper part of the working frame 1 for a second coarse filtration to avoid the problem of incomplete slurry filtration.

[0040] The vertical water pipe 18 is equipped with one-way valves a24 and c26, and the horizontal water pipe 23 is equipped with one-way valves b25 and d27. The sealing ring 33 contained inside completely seals the gap between the sealing ring 33 and the baffle b34. When water flows into the vertical water pipe 18 from the inflow direction and the pressure reaches a certain value, the water pressure overcomes the elastic force of the spring 35 and pushes the baffle b34 to slide downward, opening the passage and allowing water to pass smoothly. When the water pressure disappears or reverses, the spring 35 quickly restores its deformation, pushes the baffle b34 to move upward, and re-fits with the sealing ring 33, realizing the one-way conduction function.

[0041] When the slurry meets the pressure value after being detected by the pressure sensor 19, the small motor 21 is started to rotate the baffle a22 to restore the original state. The water flows through the vertical water pipe 18 into the lower part of the working frame 1 for fine filtration, filtering out the fine fibers again. The filtered slurry is discharged into the lower part of the working frame 1 through the water inlet 31. The waste liquid is discharged from the bottom water pipe 32 by the pressure of the water pump 16.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fiber recovery machine for multi-stage filtration of pulping wastewater, comprising a working frame (1), characterized in that: A locking plate (2) is fixedly connected to the front side of the work frame (1). Four screws (3) are threadedly connected to the outer side of the locking plate (2). A sealing cover (4) is slidably connected to the front side of the locking plate (2). A support plate a (5) is fixedly connected to the front side of the sealing cover (4). A drive assembly is fixedly connected to the top of the support plate a (5). A fixing column (8) is threadedly connected to the inner side of the sealing cover (4). A limiting groove plate (10) is fixedly connected to the inner side of the drive assembly. A three-arm rod (9) for fixing is slidably connected to the inner side of the limiting groove plate (10). A water storage pipe (12) is fixedly connected to the rear side of the locking plate (2). A filter screen (11) is provided on the inner side of the water storage pipe (12).

2. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 1, characterized in that: The drive assembly includes a cylinder (6), the bottom of which is placed on top of the support plate a (5), and a piston rod (7) is fixedly connected to the drive end of the cylinder (6).

3. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 2, characterized in that: The sealing cap (4) is threaded with four screws (3) on the outside. The fixing three-arm rod (9) is rotatably connected to a fixing column (8). The piston rod (7) is fixedly connected to the outside of the limiting groove plate (10) on the inside. The piston rod (7) is rotatably connected to the inside of the filter screen (11) on the outside.

4. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 1, characterized in that: Two support plates b (14) are fixedly connected to the rear side of the work frame (1). Two large motors (13) are fixedly connected to the top of the two support plates b (14). Threaded shafts (37) are fixedly connected to the drive ends of the two large motors (13). A filter screen (11) is threadedly connected to the front side of the threaded shaft (37). A sliding plate (15) is slidably connected to the top of the work frame (1). A water pump (16) is fixedly connected to the top of the sliding plate (15).

5. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 4, characterized in that: The bottom of the two bottom water storage pipes (12) is provided with water delivery holes (31), the top of the two top water storage pipes (12) is provided with water inlet holes (17), the bottom of the two top water storage pipes (12) is fixedly connected with vertical water delivery pipes (18), the inner side of the two vertical water delivery pipes (18) is fixedly connected with horizontal water delivery pipes (23), the inner side of the left vertical water delivery pipe (18) is fixedly connected with one-way valve a (24), the inner side of the horizontal water delivery pipe (23) is fixedly connected with one-way valve b (25) and one-way valve d (27), the inner side of the right vertical water delivery pipe (18) is fixedly connected with one-way valve c (26), and the top of the work frame (1) is fixedly connected with an automatic control component.

6. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 5, characterized in that: The automatic control component includes a pressure sensor (19), the bottom of which is fixedly connected to the top of the inner side of the work frame (1). The left side of the pressure sensor (19) is electrically connected to a wire (20), the far end of which is electrically connected to a small motor (21), and the drive end of the small motor (21) is fixedly connected to a baffle a (22).

7. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 5, characterized in that: The one-way valve a (24), the one-way valve b (25), the one-way valve c (26), and the one-way valve d (27) all include a sealing ring (33). The outer side of the sealing ring (33) is fixedly connected to the inner side of the vertical water pipe (18). The inner side of the vertical water pipe (18) is slidably connected to a baffle b (34). The inner side of the horizontal water pipe (23) is provided with a spring (35). The inner side of the vertical water pipe (18) is fixedly connected to a fixing ring (36). The bottom of the sealing ring (33) is in contact with the top of the baffle b (34). The top of the spring (35) is fixedly connected to the bottom of the baffle b (34). The top of the fixing ring (36) is fixedly connected to the bottom of the spring (35).

8. The fiber recovery machine for multi-stage filtration of pulping wastewater according to claim 6, characterized in that: A water storage tank (28) is fixedly connected to the right side of the work frame (1). An L-shaped water pipe (29) is fixedly connected to the top left side of the water storage tank (28). A sealing ring (30) is fitted at the bottom of the L-shaped water pipe (29). Four bottom water pipes (32) are fixedly connected to the bottom outside of the work frame (1). The outside of the baffle a (22) is in contact with the inside of the horizontal water pipe (23). The outside of the horizontal water pipe (23) is fixedly connected to the inside of the water storage tank (28). The bottom of the L-shaped water pipe (29) is in contact with the top of the sliding plate (15). The bottom of the sealing ring (30) is in contact with the top of the sliding plate (15).

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