A pulp desanding defiberer

Abstract

The utility model belongs to paper pulp grinder technical field, concretely is a kind of paper pulp sand removal dissociation grinder, including jar body, the inside rotation of jar body is equipped with the shaft, the surface fixed mounting of shaft has the dynamic millstone of conical shape, the inner wall sliding of jar body is equipped with fixed millstone, the bottom fixed mounting of fixed millstone has filter box, the inside rotation of filter box is equipped with multiple blades, the lower surface fixed mounting of blade has brush, the side fixed mounting of jar body has delivery pump, the feed end of delivery pump is communicated with the bottom side of filter box, and the outlet end of telescopic pipe is communicated with the duct. Through the fixed millstone, filter box, sleeve, blade, brush and delivery pump etc. Setting of sliding arrangement, it can adjust grinding gap, so it can change the fineness degree of pulp grinding, simultaneously send pulp grinding place, carry out repeated grinding, avoid the problem that part of paper pulp is not ground in place when a large amount of paper pulp is ground, make that pulp grinding is even, improve use effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of pulp refiners, and particularly relates to a pulp desanding and dissociation refiner. Background Technology

[0002] Pulp is a fibrous material made from plant fibers through various processing methods. It can be classified according to the processing method into mechanical pulp, chemical pulp, and chemimechanical pulp. Impurities are produced during pulp processing and grinding. The pulp and sand need to be separated, which requires processing through a pulp desanding and refining mill.

[0003] A pulp desanding and refining mill, as described in patent application CN202322187722.X, is characterized by comprising a housing, a drive motor, a stirring shaft, a connecting rod, a scraper, a sealing plate, a connecting ring, an mounting component, and a filter plate. A feed pipe is located on one side of the top of the housing, and a discharge pipe is located on one side of the bottom of the housing. The feed pipe is connected to the connecting ring via the mounting component in the middle, and a filter screen is located in the middle of the connecting ring. The filter plate, scraper, and connecting rod are installed inside the housing, with the connecting rod fixedly connected to the scraper. The filter plate is connected to the stirring shaft in the middle, allowing it to rotate with the stirring shaft. During rotation, the scraper removes impurities from the filter plate, enabling the pulp to flow more efficiently from the discharge pipe. The filter plate provides secondary filtration, preventing sand and gravel from the ground pulp from clogging the discharge pipe and affecting the discharge efficiency.

[0004] Existing technology uses filter plates and scrapers to scrape away impurities on the filter plates, allowing the pulp to flow more efficiently out of the discharge pipe. The filter plates serve as a secondary filter, but there are still some shortcomings in overall use: Firstly, in the process of grinding pulp, existing pulp refiners are prone to uneven grinding when grinding a large amount of pulp. Some pulp cannot become more uniform and fine, thus affecting the grinding effect. If qualified pulp is required, the pulp often needs to be taken out and ground multiple times. This method is time-consuming and labor-intensive, affecting the grinding efficiency. Secondly, although the aforementioned existing technology can scrape away impurities on the filter plate to allow the pulp to pass through the discharge pipe more efficiently, if impurities are stuck in the middle of the filter plate holes, the scraper cannot remove them. At the same time, when the scraper removes impurities from the filter plate, the filter plate will cut off some of the impurities stuck in the filter plate holes, so that some impurities will still remain in the filter holes, which will still clog the filter holes and cannot play a cleaning role, thus failing to guarantee the filtration effect of the filter plate. Summary of the Invention

[0005] This invention aims to overcome the technical problem of uneven pulp formation during large-scale pulp grinding in existing technologies, which leads to repeated grinding and low efficiency. Furthermore, it addresses the technical problem of incomplete filter plate cleaning, where the scraper cannot remove impurities stuck in the filter holes, and residues still clog the filter holes, affecting the filtration effect. This invention provides a pulp desanding and refining machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pulp desanding and refining machine, comprising a base, a tank fixedly mounted on the upper surface of the base, a rotating shaft rotatably mounted inside the tank, a conical moving grinding stone fixedly mounted on the surface of the rotating shaft, a fixed grinding stone slidably mounted on the inner wall of the tank for use with the moving grinding stone, a filter box fixedly mounted at the bottom center of the fixed grinding stone, multiple arc-shaped blades rotatably mounted inside the filter box, a brush fixedly mounted on the lower surface of the blades, a conveying pump fixedly mounted on one side of the tank, a telescopic pipe connected to the bottom side of the filter box, the conveying pump and the telescopic pipe being interconnected, the feed end of the telescopic pipe being connected to the bottom side of the filter box, and the discharge end of the telescopic pipe being connected to a guide tube, the top of the guide tube being connected to the top of the tank.

[0007] Optionally, a sleeve is snapped onto the upper surface of the inner cavity of the filter box and is rotatably fitted, with the sleeve sliding on the surface of the rotating shaft.

[0008] Optionally, the surface of the rotating shaft is provided with multiple sliding grooves, and a slider that slides inside the sliding grooves is fixedly installed on the inner surface of the sleeve. The length of the slider is half the length of the sliding groove.

[0009] Optionally, a disintegration box is fixedly installed at the bottom end of the rotating shaft.

[0010] Optionally, a threaded ring is threadedly installed at the bottom of the dissociation box, and an annular filter screen is fixedly installed on the inner surface of the threaded ring. A conical protrusion is provided in the hollow part of the filter screen.

[0011] Optionally, the bottom outer edge of the dissociation box is provided with multiple filter holes.

[0012] Optionally, the top of the tank is connected to a feed pipe, the lower surface of the base is fixedly installed with a detachable discharge hopper, the bottom of the discharge hopper is connected to a discharge pipe, and the discharge hopper covers the outside of the disintegration box.

[0013] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: This utility model, through the sliding arrangement of a fixed grinding stone, filter box, sleeve, blades, brush, and conveying pump, can adjust the grinding gap, thereby changing the coarseness of the pulp grinding. At the same time, the pulp is sent to the grinding area for repeated grinding, avoiding the problem of some pulp not being ground properly when grinding a large amount of pulp, making the pulp grinding uniform and improving the use effect. This invention, through the design of a dissociation box, threaded ring, filter screen, and protrusions, can disperse and centrifuge qualified slurry, enabling the slurry to be quickly separated from sand and gravel. This avoids reduced filtration efficiency due to sand and gravel clogging the filter holes, effectively improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 for Figure 3 Enlarged structural diagram at point B in the diagram; Figure 5 This is a schematic diagram of the connection between the rotating shaft and the sleeve of this utility model; Figure 6 for Figure 3 A magnified structural diagram at point C in the diagram.

[0015] In the diagram: Base 10; Support leg 11; Feed hopper 12; Tank body 13; Feed pipe 14; Discharge pipe 15; Motor 16; Rotating shaft 17; Moving grinding stone 18; Fixed grinding stone 19; Electric pusher cylinder 20; Filter box 21; Sleeve 22; Slider 23; Slide 24; Blade 25; Brush 26; Conveyor pump 27; Telescopic pipe 28; Guide pipe 29; Disintegration box 30; Threaded ring 31; Filter screen 32; Protrusion 33. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] refer to Figure 1A pulp desanding and refining mill includes a base 10, with legs 11 fixedly installed on the lower surface of the base 10 and a detachable feed hopper 12 fixedly installed on the lower surface of the base 10. A tank 13 is fixedly installed on the upper surface of the base 10. A feed pipe 14 is connected to the top of the tank 13, and a discharge pipe 15 is connected to the bottom of the feed hopper 12. In use, coarse pulp enters the tank 13 through the feed pipe 14 for desanding and filtration, and qualified pulp is discharged from the discharge pipe 15.

[0018] Further reference Figure 1 , Figure 2 and Figure 3 A motor 16 is fixedly installed on the upper surface of the tank body 13. A rotating shaft 17, which rotates inside the tank body 13, is fixedly installed at the output end of the motor 16. A conical moving grinding stone 18 is fixedly installed on the surface of the rotating shaft 17. A fixed grinding stone 19, which works in conjunction with the moving grinding stone 18, is provided on the inner surface of the tank body 13. A filter box 21 is fixedly installed at the bottom center of the fixed grinding stone 19. After the pulp coarse material enters the interior of the tank body 13, it enters between the fixed grinding stone 19 and the moving grinding stone 18. Then, the motor 16 drives the rotating shaft 17 to rotate. At the same time, the rotating shaft 17 drives the moving grinding stone 18 connected to it to rotate and grind the pulp coarse material, coarsely grinding the larger fibrous materials in the pulp coarse material. The coarsely ground pulp falls into the filter box 21. Because the fibrous materials in the pulp are large, they cannot flow out from the filter holes in the filter box 21.

[0019] It should be noted that both the stationary grinding stone 19 and the moving grinding stone 18 have rough textures or particles on their adjacent surfaces for grinding. This can be referred to as the structure of the grinding part inside the grinding disc. This is existing technology and will not be elaborated on further in this solution.

[0020] Further reference Figure 3 and Figure 4Multiple circumferentially arranged electric pusher cylinders 20 are fixedly installed inside the tank body 13. The output end of the electric pusher cylinder 20 is fixed to the lower surface of the fixed grinding stone 19. A telescopic pipe 28 is connected to one side of the bottom of the filter box 21. A conveying pump 27 is fixedly installed on one side of the tank body 13. The feed end of the telescopic pipe 28 is connected to the conveying pump 27, and the discharge end of the telescopic pipe 28 is connected to a conduit 29, which is connected to the top of the tank body 13. In the above scheme, the operator can control the electric pusher cylinder 20 to work, and push the fixed grinding stone 19 up and down through the output end of the electric pusher cylinder 20, so that the gap between the fixed grinding stone 19 and the moving grinding stone 18 can be adjusted, thereby changing the coarseness of the pulp grinding. After the gap between the fixed grinding stone 19 and the moving grinding stone 18 is adjusted, the pulp grinding process is carried out. After the coarse pulp is ground, it falls into the filter box 21 for filtration. When the pulp in the filter box 21 is filtered... When the amount of coarse pulp filtered out reaches a threshold, the delivery pump 27 operates to pump the coarse pulp in the filter box 21 back into the grinding area of ​​the tank 13 through the conduit 29 for secondary grinding. Since the telescopic pipe 28 is telescopic, it extends as the fixed grinding stone 19 moves upward, always maintaining connection with the delivery pump 27 and the filter box 21. This setting allows for multiple adjustments to the gap between the fixed grinding stone 19 and the moving grinding stone 18, enabling multiple grinding of the pulp and repeated cyclic grinding. This avoids the problem of some pulp not being ground properly when grinding a large amount of pulp, resulting in uniform pulp grinding and improved performance. It should be noted that in actual operation, a detector is installed inside the filter box 21 to detect the amount of coarse pulp accumulated, thereby assisting in determining the threshold value mentioned above. This is existing technology, and this solution does not impose any restrictions.

[0021] Further reference Figure 3 , Figure 4 and Figure 5The bottom end of the rotating shaft 17 completely penetrates the filter box 21. The sliding joint between the two is connected by a sliding sealing ring structure to ensure that the rotating shaft 17 can rotate smoothly, and the filter box 21 can also slide up and down. A sleeve 22 is provided on the outside of the rotating shaft 17. The sleeve 22 has multiple sliding grooves 24 on the surface of the rotating shaft 17. Multiple sliders 23 are fixedly installed in the inner cavity of the sleeve 22. The sliders 23 slide with the sliding grooves 24, and the length of the sliders 23 is half of the length of the sliding grooves 24. Multiple arc-shaped blades 25 are fixedly installed on the outer surface of the sleeve 22. A brush 26 is fixedly installed on the lower surface of the blades 25. When the rotating shaft 17 rotates, it drives the grinding stone 18 to grind the slurry. As the sliders 23 slide in the sliding grooves, the brushes 26 grind the slurry. The internal structure of 24 allows the rotating shaft 17 to drive the filter box 21 to rotate when it rotates. Since the filter box 21 can rotate on the bottom upper surface of the electric push cylinder 20, the filter box 21 drives the blades 25 to rotate inside the electric push cylinder 20, stirring the falling slurry. The brush 26 can clean the filter holes of the electric push cylinder 20, sweeping out the large fiber slurry that is blocked in the filter holes, avoiding clogging of the filter holes and reducing the filtration effect. This allows some qualified slurry to fall from the filter holes of the filter box 21, facilitating subsequent work. Secondly, when the delivery pump 27 pumps material, the arc-shaped blades 25 can sweep the slurry from the inside to the outside, thereby increasing the conveying speed and improving the use effect.

[0022] Further reference Figure 3 , Figure 4 and Figure 6 A disintegration box 30 is fixedly installed at the bottom end of the rotating shaft 17. Multiple filter holes are also provided on the outer circular surface of the bottom of the disintegration box 30. A threaded ring 31 is threadedly installed at the bottom end of the disintegration box 30, and an annular filter screen 32 is fixedly installed on the inner surface of the threaded ring 31. A conical protrusion 33 is provided in the hollow part of the filter screen 32. The protrusion 33 is fixedly connected to the bottom end of the rotating shaft 17. The qualified slurry after grinding falls from the filter box 21 into the disintegration box 30. When the slurry enters the disintegration box 30 and contacts the protrusion 33, the conical protrusion 33 disperses the slurry in all directions. The slurry is filtered through the filter screen 32, leaving the sand and gravel inside the disintegration box 30, while the slurry is filtered out through the filter screen 32. If the bottom of the filter screen 32 is... When sand and gravel clog the filter, the filtration effect decreases, and the slurry accumulates, causing the slurry level to rise. In this design, the bottom of the dissociation box 30 and the rotating shaft 17 are fixed together, so that when the rotating shaft 17 rotates, it can drive the dissociation box 30 to rotate, thereby centrifuging the slurry at the bottom of the dissociation box 30 from the filter holes on both sides of the dissociation box 30, thus completing the filtration. This avoids the reduced filtration effect when the filter screen 32 is clogged with sand and gravel, effectively improving the working efficiency. The filtered slurry is discharged from the discharge pipe 15. After the slurry filtration is completed, the discharge hopper 12 can be removed from the base 10, and then the threaded ring 31 can be removed from the bottom of the dissociation box 30 to remove the filtered sand and gravel. After cleaning, the device can be reset.

[0023] Finally, it should be noted that the connection and fixing of each part of the pulp desanding and refining machine of this utility model can be achieved by conventional mechanical connection structure, and the control system and connection method required between multiple electrical components and drive components can also be achieved by conventional means and equipped with corresponding sensors and detectors. As long as the beneficial effect or the specific actions in the above work can be achieved, it can be implemented.

[0024] The motor 16, electric pusher cylinder 20, and conveying pump 27 in the pulp desanding and refining machine of this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technical personnel in this field.

[0025] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0026] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0027] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A pulp desanding and refining mill, comprising a base (10), wherein a tank (13) is fixedly mounted on the upper surface of the base (10), characterized in that, A rotating shaft (17) is rotatably mounted inside the tank (13). A conical moving grinding stone (18) is fixedly mounted on the surface of the rotating shaft (17). A fixed grinding stone (19) that cooperates with the moving grinding stone (18) is slidably mounted on the inner wall of the tank (13). A filter box (21) is fixedly mounted at the bottom center of the fixed grinding stone (19). Multiple arc-shaped blades (25) are rotatably mounted inside the filter box (21). The lower surface of the blades (25) A brush (26) is fixedly installed on the surface of the tank (13). A conveying pump (27) is fixedly installed on one side of the tank (13). A telescopic pipe (28) is connected to the bottom side of the filter box (21). The conveying pump (27) and the telescopic pipe (28) are connected to each other. The feed end of the telescopic pipe (28) is connected to the bottom side of the filter box (21), and the discharge end of the telescopic pipe (28) is connected to a conduit (29). The top of the conduit (29) is connected to the top of the tank (13).

2. The pulp desanding and refining mill according to claim 1, characterized in that, The upper surface of the inner cavity of the filter box (21) is fitted with a sleeve (22) and can rotate to engage with it. The sleeve (22) slides on the surface of the rotating shaft (17).

3. A pulp desanding and refining mill according to claim 2, characterized in that, The surface of the rotating shaft (17) is provided with multiple sliding grooves (24), and the inner surface of the sleeve (22) is fixedly installed with a slider (23) that slides inside the sliding groove (24). The length of the slider (23) is half of the sliding groove (24).

4. A pulp desanding and refining mill according to claim 3, characterized in that, The bottom end of the rotating shaft (17) is fixedly installed with a disintegration box (30).

5. A pulp desanding and refining mill according to claim 4, characterized in that, The bottom of the dissociation box (30) is threaded with a threaded ring (31), and an annular filter screen (32) is fixedly installed on the inner surface of the threaded ring (31). A conical protrusion (33) is provided in the hollow part of the filter screen (32).

6. A pulp desanding and refining mill according to claim 4, characterized in that, The bottom outer edge of the dissociation box (30) is provided with multiple filter holes.

7. A pulp desanding and refining mill according to claim 1, characterized in that, The top of the tank (13) is connected to a feed pipe (14), and a detachable discharge bin (12) is fixedly installed on the lower surface of the base (10). The bottom of the discharge bin (12) is connected to a discharge pipe (15), and the discharge bin (12) covers the outside of the disintegration box (30).

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