A filter press for recycling paper pulp

Abstract

The utility model discloses a kind of regenerated paper pulp filter presses, including rack, the left end top of the rack is fixedly installed with overflow tank, the top of the rear side of the overflow tank is provided with overflow groove, negative pressure water removal component is installed in the rear side of the overflow tank, the right end downside of the negative pressure water removal component is provided with material equalizing groove, and the both ends of the material equalizing groove are movably connected with the top of the rack by buffer, the downside of the material equalizing groove is provided with first pressure filtration component, the first pressure filtration component includes pressure filtration conveyor belt and pressure filtration roller, the inside of the pressure filtration conveyor belt and the corresponding position of pressure filtration roller are provided with auxiliary roller, the downside of the first pressure filtration component is provided with second pressure filtration component, and guide groove is installed between the first pressure filtration component and the second pressure filtration component, the second pressure filtration component includes concentrated pressure filtration conveyor belt and concentrated pressure filtration roller, simple structure, reasonable in design, can carry out multistage water removal to regenerated paper pulp, guarantee pressure filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and more specifically, to a recycled pulp filter press. Background Technology

[0002] Pulp filter presses are solid-liquid separation equipment commonly used in industries such as papermaking, chemicals, and environmental protection. They are mainly used to press and filter the water in pulp to obtain pulp with lower moisture content, thereby improving the efficiency of subsequent processing. Currently, most common pulp filter presses use filter cloth as the filter medium. During the filtration process, pressure is applied to force the liquid in the pulp to flow through the filter cloth, while the solid pulp remains on the surface of the filter cloth to form a filter cake.

[0003] Application No. 202510468891.1 discloses a pulp filter press, comprising a filter press body and a circulating flushing assembly. The circulating flushing assembly is mounted on the filter press body, which includes conveying rollers and filter rollers, both fixedly mounted on the body. The filter press body is configured to drive the conveying rollers and filter rollers to rotate. A filter cloth is mounted on the conveying rollers, and the rotation of the filter cloth drives the conveying filter cloth to transport pulp. The circulating flushing assembly includes flushing nozzles located on the return section of the filter cloth. By arranging flushing nozzles on the return section of the filter cloth, interference with the filter cloth in the pulp-bearing area is avoided. Simultaneously, cleaning is performed while the filter cloth is unloaded, saving cleaning energy and improving cleaning efficiency. This achieves online cleaning of the filter cloth, prevents clogging, and ensures stable and efficient operation of the filtration process.

[0004] During the filtration process, it cannot guarantee that the pulp will fall evenly onto the filter cloth. Moreover, it is all done through a simple one-time filtration, resulting in poor filtration effect and difficulty in meeting the moisture content requirements of the filter cake after filtration.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a recycled pulp filter press to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows: A recycled pulp filter press includes a frame. An overflow box is fixedly installed on the top left end of the frame. An overflow trough is provided on the top rear side of the overflow box. A negative pressure dewatering component is installed on the rear side of the overflow box. A material distribution trough is provided on the lower right side of the negative pressure dewatering component. Both ends of the material distribution trough are movably connected to the top of the frame through buffer components. A first filter press component is provided below the material distribution trough. The first filter press component includes a filter press conveyor belt and a filter press roller. An auxiliary roller is provided on the inner side of the filter press conveyor belt at a position corresponding to the filter press roller. A second filter press component is provided below the first filter press component. A guide groove is installed between the first filter press component and the second filter press component. The second filter press component includes a centralized filter press conveyor belt and a centralized filter press roller. A collection trough is provided on the bottom right side of the second filter press component. A water collection trough is provided on the bottom inner side of the frame.

[0008] Preferably, the negative pressure dewatering component includes a stepped support member, with a negative pressure groove at the top of each step of the stepped support member. A ceramic filter element is installed in the negative pressure groove, and a vacuum tube is installed at one end of the negative pressure groove, which is connected to a gas-liquid separation component.

[0009] Preferably, the edge of the ceramic filter element is sealed to the negative pressure groove by a sealing element, and both ends of the stepped support are provided with anti-leakage baffles.

[0010] Preferably, a control plate is rotatably mounted on the inner cavity of the material equalization tank via a hinge, and adjusting screws are symmetrically arranged on the lower side of the control plate. The adjusting screws are connected to the material equalization tank via a threaded connection, and a vibration motor is fixedly mounted on the front side of the material equalization tank.

[0011] Preferably, the buffer includes a first support plate and a second support plate, with a supporting rubber column installed between the first support plate and the second support plate, and a buffer spring fitted on the outside of the supporting rubber column.

[0012] Preferably, both the first and second filter press components are equipped with drive motors, and both the filter press conveyor belt and the centralized filter press conveyor belt are made of polyester filter cloth.

[0013] Preferably, the auxiliary roller is positioned directly above the filter press roller, and the height of the right end of the filter press conveyor belt is 5-10 cm higher than the auxiliary roller. The filter press roller includes a support filter screen on the outer side, and a water guide groove is axially arranged on the inner side of the support filter screen. The middle height of the water guide groove is higher than the height of both ends, and the side of the water guide groove is attached to the inner side of the support filter screen.

[0014] Preferably, the centralized filter press conveyor belt is configured as a trough-shaped structure that is wide at both ends and narrow in the middle, and the centralized filter press roller is configured as a cylindrical structure that matches the centralized filter press conveyor belt.

[0015] The beneficial effects of this utility model are as follows: By setting a negative pressure dewatering component, the fluid pulp can be dewatered under negative pressure, thereby reducing the moisture content of the pulp and preventing the pulp from overflowing on the filter press conveyor belt, which would affect the filtration effect. By setting a material equalization trough, the pulp can be evenly distributed on the filter press conveyor belt, and the pulp conveying volume can be adjusted by adjusting the angle of the control plate. By setting a first filter press component and a second filter press component, the pulp is unfolded and filtered in the first filter press component to remove most of the water in the pulp. At the same time, the water pressed out is discharged through the filter press conveyor belt and the water guide groove in the filter press roller, preventing the water pressed out from mixing back into the pulp. The pulp falls onto the centralized filter press conveyor belt through the guide groove and is squeezed by the centralized filter press roller, thereby ensuring the filtration effect of the pulp. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a recycled pulp filter press according to an embodiment of the present utility model; Figure 2 This is a structural diagram of a negative pressure dewatering component of a recycled pulp filter press according to an embodiment of the present utility model; Figure 3 This is a structural diagram of the equalization tank of a recycled pulp filter press according to an embodiment of the present utility model; Figure 4 This is a cross-sectional view of the filter roller of a recycled pulp filter press according to an embodiment of the present utility model; Figure 5 This is a structural diagram of the second filter press component of a recycled pulp filter press according to an embodiment of the present invention.

[0018] In the picture: 1. Frame; 2. Overflow box; 3. Overflow trough; 4. Negative pressure dewatering assembly; 5. Material distribution trough; 6. Buffer component; 7. First filter press assembly; 8. Filter press conveyor belt; 9. Filter press roller; 10. Auxiliary roller; 11. Second filter press assembly; 12. Guide trough; 13. Centralized filter press conveyor belt; 14. Centralized filter press roller; 15. Collection trough; 16. Water collection trough; 17. Stepped support component; 18. Negative pressure trough; 19. Ceramic filter element; 20. Vacuum tube; 21. Leak-proof baffle; 22. Control panel; 23. Adjusting screw; 24. Vibration motor; 25. First support plate; 26. Second support plate; 27. Supporting rubber column; 28. Buffer spring; 29. ​​Drive motor; 30. Supporting filter screen; 31. Water guide trough. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] According to an embodiment of the present invention, a recycled pulp filter press is provided.

[0021] Example 1 like Figure 1-5 As shown, a recycled pulp filter press according to an embodiment of the present invention includes a frame 1. An overflow box 2 is fixedly installed on the top left end of the frame 1. An overflow trough 3 is provided on the top rear side of the overflow box 2. A negative pressure dewatering component 4 is installed on the rear side of the overflow box 2. The upper surface of the negative pressure dewatering component 4 is inclined to the right at 15-20 degrees. A material equalization trough 5 is provided on the lower right side of the negative pressure dewatering component 4. The two ends of the material equalization trough 5 are movably connected to the top of the frame 1 through buffer members 6. A first filter press component 7 is provided on the lower side of the material equalization trough 5. The first filter press component 7 includes a filter press conveyor belt 8 and a filter press roller 9. An auxiliary roller 10 is provided on the inner side of the filter press conveyor belt 8 at a position corresponding to the filter press roller 9. A second filter press component 11 is provided on the lower side of the first filter press component 7. A guide groove 12 is installed between the first filter press component 7 and the second filter press component 11. The second filter press component 11 includes a centralized filter press conveyor belt 13 and a centralized filter press roller 14. A collection tank 15 is provided at the bottom right side of the two-pressure filter assembly 11, and a water collection tank 16 is provided at the bottom inner side of the frame 1. The negative pressure dewatering assembly 4 includes a stepped support member 17, and a negative pressure groove 18 is provided at the top of each step of the stepped support member 17. A ceramic filter element 19 is installed in the negative pressure groove 18, and a vacuum tube 20 is installed at one end of the negative pressure groove 18, which is connected to the gas-liquid separation assembly. The edge of the ceramic filter element 19 is close to the negative pressure groove 18. The pulp is sealed by a sealing element. Both ends of the stepped support 17 are equipped with anti-leakage baffles 21. The pulp is poured into the overflow tank 2 and flows through the overflow trough 3 to the negative pressure dewatering component 4. The pulp slides off each stepped support 17. At the same time, the gas-liquid separation component (vacuum tank) generates negative pressure on the negative pressure tank 18. The pulp is filtered by the ceramic filter element 19, thereby reducing the water content of the pulp and reducing its fluidity, and preventing the pulp from overflowing during pressure filtration.

[0022] Example 2 like Figure 1-5As shown, a recycled pulp filter press according to an embodiment of the present invention includes a frame 1. An overflow box 2 is fixedly installed on the top left end of the frame 1. An overflow trough 3 is provided on the top rear side of the overflow box 2. A negative pressure dewatering assembly 4 is installed on the rear side of the overflow box 2. A material distribution trough 5 is provided on the lower right side of the negative pressure dewatering assembly 4. The two ends of the material distribution trough 5 are movably connected to the top of the frame 1 through buffer members 6. A first filter press assembly 7 is provided on the lower side of the material distribution trough 5. The first filter press assembly 7 includes a filter press... A conveyor belt 8 and a filter press roller 9 are provided. An auxiliary roller 10 is positioned on the inner side of the filter press conveyor belt 8 corresponding to the position of the filter press roller 9. A second filter press assembly 11 is provided below the first filter press assembly 7, and a guide groove 12 is installed between the first filter press assembly 7 and the second filter press assembly 11. The second filter press assembly 11 includes a centralized filter press conveyor belt 13 and a centralized filter press roller 14. A collection trough 15 is provided at the bottom right side of the second filter press assembly 11. A water collection trough 16 is provided at the bottom inner side of the frame 1. A control plate 22 is rotatably mounted on the inner cavity of the feed trough 5 via a hinge. Adjusting screws 23 are symmetrically arranged on the lower side of the control plate 22, and the adjusting screws 23 are threadedly connected to the feed trough 5. A vibration motor 24 is fixedly mounted on the front side of the feed trough 5. The buffer 6 includes a first support plate 25 and a second support plate 26. A supporting rubber column 27 is installed between the first support plate 25 and the second support plate 26. A buffer spring 28 is fitted on the outer side of the supporting rubber column 27. After being dewatered by negative pressure, the pulp falls into the feed trough 5. Personnel adjust the angle of the control plate 22 by rotating the adjusting screws 23 according to the required processing flow. A ball bearing is movably installed at the end of the adjusting screw 23 to reduce friction with the control plate 22 and facilitate operation. A gap groove is provided at the lower end of the control plate 22 to facilitate pulp leakage. When the pulp is in the feed trough 5, the vibration motor 29 is turned on. The buffer 6 reduces the vibration transmitted to the frame 1, and the vibration motor 24 drives the feed trough 5 to swing, thereby ensuring uniform material feeding.

[0023] Example 3 like Figure 1-5As shown, a recycled pulp filter press according to an embodiment of the present invention includes a frame 1. An overflow box 2 is fixedly installed on the top left end of the frame 1. An overflow trough 3 is provided on the top rear side of the overflow box 2. A negative pressure dewatering assembly 4 is installed on the rear side of the overflow box 2. A material distribution trough 5 is provided on the lower right side of the negative pressure dewatering assembly 4. The two ends of the material distribution trough 5 are movably connected to the top of the frame 1 through buffer members 6. A first filter press assembly 7 is provided on the lower side of the material distribution trough 5. The first filter press assembly 7 includes a filter press conveyor belt 8 and a filter press roller 9. The inner side of the filter press conveyor belt 8 is aligned with the filter press roller 9. An auxiliary roller 10 is provided at the appropriate position. A second filter press assembly 11 is provided below the first filter press assembly 7, and a guide groove 12 is installed between the first filter press assembly 7 and the second filter press assembly 11. The second filter press assembly 11 includes a centralized filter press conveyor belt 13 and a centralized filter press roller 14. A collection trough 15 is provided at the bottom right side of the second filter press assembly 11. A water collection trough 16 is provided at the bottom inner side of the frame 1. A drive motor 29 is installed on both the first filter press assembly 7 and the second filter press assembly 11. Both the filter press conveyor belt 8 and the centralized filter press conveyor belt 13 are made of polyester filter cloth. The auxiliary roller 10 is positioned directly above the filter press roller 9. The height of the right end of the filter press conveyor belt 8 is 5-10 cm higher than that of the auxiliary roller 10. The filter press roller 9 includes a support filter screen 30 on its outer side. A water guide groove 31 is axially arranged on the inner side of the support filter screen 30, and the middle height of the water guide groove 31 is higher than the height at both ends. The side of the water guide groove 31 is attached to the inner side of the support filter screen 30. The centralized filter press conveyor belt 13 is configured as a trough-shaped structure that is wide at both ends and narrow in the middle. The centralized filter press roller 14 is configured as a cylindrical structure that matches the centralized filter press conveyor belt 13. The filter press roller 9 and... The auxiliary rollers 10 are connected to each other and the conveyor rollers of the centralized filter press roller 14 and the centralized filter press conveyor belt 13 are connected by gears. The filter press roller 9 and the conveyor rollers of the filter press conveyor belt 8 are connected by a synchronous belt, so that synchronous driving can be achieved. The pulp falls onto the first filter press assembly 7 through the equalization trough 5. The pulp is filtered by the filter press roller 9 and then falls into the guide trough 12. The inverted triangular structure of the guide trough 12 makes the filtered pulp fall into the middle position of the centralized filter press conveyor belt 13. Then it is filtered again by the centralized filter press roller 14, so as to ensure the effect of filter pressing.

[0024] In summary, with the help of the above-mentioned technical solution of this utility model, when this device is in use, the pulp flows from the overflow tank 2 to the overflow trough 3 onto the negative pressure dewatering component 4. The negative pressure dewatering component 4 performs vacuum filtration on the pulp with high moisture content, and then the pulp flows into the equalization tank 5. The angle of the control plate 22 is adjusted by adjusting the screw 23 to control the flow rate of the pulp. The vibration motor 24 is turned on, so that the pulp falls evenly from the equalization tank 5 onto the filter press conveyor belt 8 for conveying. Then it is pressed by the filter press roller 9. The water is discharged through the filter cloth and the water guide trough 31 to avoid flowing back onto the pulp and affecting the filtration effect. The pulp after one filtration falls into the guide trough 12, and then falls to the middle position of the centralized filter press conveyor belt 13. It is then pressed again by the centralized filter press roller 14 to ensure the filtration effect. The filtered water falls into the water collection tank 16 for collection and recycling.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 recycled pulp filter press, comprising a frame (1), characterized in that, An overflow box (2) is fixedly installed on the top left side of the frame (1). An overflow trough (3) is provided on the top rear side of the overflow box (2). A negative pressure dewatering assembly (4) is installed on the rear side of the overflow box (2). A material distribution trough (5) is provided on the lower right side of the negative pressure dewatering assembly (4). The two ends of the material distribution trough (5) are movably connected to the top of the frame (1) through buffer parts (6). A first filter press assembly (7) is provided on the lower side of the material distribution trough (5). The first filter press assembly (7) includes a filter press conveyor belt (8) and a filter press roller (9). An auxiliary roller (10) is provided on the inner side of the filter press conveyor belt (8) corresponding to the filter press roller (9). A second filter press assembly (11) is provided on the lower side of the first filter press assembly (7). A guide groove (12) is installed between the first filter press assembly (7) and the second filter press assembly (11). The second filter press assembly (11) includes a centralized filter press conveyor belt (13) and a centralized filter press roller (14). A collection trough (15) is provided on the bottom right side of the second filter press assembly (11). A water collection trough (16) is provided on the bottom inner side of the frame (1).

2. A recycled pulp filter press according to claim 1, characterized in that, The negative pressure dewatering component (4) includes a stepped support (17), each step of which is provided with a negative pressure groove (18) at the top. A ceramic filter element (19) is installed in the negative pressure groove (18). A vacuum tube (20) is installed at one end of the negative pressure groove (18) and is connected to the gas-liquid separation component through the vacuum tube (20).

3. A recycled pulp filter press according to claim 2, characterized in that, The edge of the ceramic filter element (19) is sealed with the negative pressure groove (18) by a sealing element, and both ends of the stepped support element (17) are provided with anti-leakage baffles (21).

4. A recycled pulp filter press according to claim 1, characterized in that, The inner cavity of the material equalization tank (5) is fitted with a control plate (22) via a hinge. An adjusting screw (23) is symmetrically arranged on the lower side of the control plate (22), and the adjusting screw (23) is connected to the material equalization tank (5) via a threaded connection. A vibration motor (24) is fixedly installed on the front side of the material equalization tank (5).

5. A recycled pulp filter press according to claim 4, characterized in that, The buffer (6) includes a first support plate (25) and a second support plate (26), and a support rubber column (27) is installed between the first support plate (25) and the second support plate (26). A buffer spring (28) is fitted on the outside of the support rubber column (27).

6. A recycled pulp filter press according to claim 1, characterized in that, Both the first filter press assembly (7) and the second filter press assembly (11) are equipped with drive motors (29), and both the filter press conveyor belt (8) and the centralized filter press conveyor belt (13) are made of polyester filter cloth.

7. A recycled pulp filter press according to claim 1, characterized in that, The auxiliary roller (10) is positioned directly above the filter press roller (9). The height of the right end of the filter press conveyor belt (8) is 5-10 cm higher than that of the auxiliary roller (10). The filter press roller (9) includes a support screen (30) on the outer side. A water guide groove (31) is axially arranged on the inner side of the support screen (30). The middle height of the water guide groove (31) is higher than the height of both ends, and the side of the water guide groove (31) is attached to the inner side of the support screen (30).

8. A recycled pulp filter press according to claim 1, characterized in that, The centralized filter press conveyor belt (13) is configured as a trough-shaped structure that is wide at both ends and narrow in the middle, and the centralized filter press roller (14) is configured as a cylindrical structure that matches the centralized filter press conveyor belt (13).

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