A multi-stage paper pulp grinder for papermaking

Abstract

The utility model relates to papermaking equipment technical field discloses a multilayer paper pulp rubbing crusher for papermaking, including fine crushing chamber, the right part fixed connection of fine crushing chamber has replacement mechanism, the left side fixed connection of fine crushing chamber has the discharge gate, the top fixed connection of fine crushing chamber has coarse cavity, the right side fixed connection of coarse cavity has cleaning mechanism, the right part fixed connection of coarse cavity has tooth roll, the replacement mechanism includes the base plate, the left side fixed connection of base plate in the right side of fine crushing chamber, the right side fixed connection of base plate has two bolt posts, two the outside fixed connection of bolt post has two clamping plates. In the utility model, the replacement mechanism effectively avoids the need for tedious replacement of different specifications tooth roll when processing different raw materials, improves the problem of internal raw material adhesion to the inner wall of a multilayer paper pulp rubbing crusher for papermaking during use, and improves the efficiency of tooth roll disassembly, replacement and installation.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a multi-layer pulp pulverizer for papermaking. Background Technology

[0002] The core purpose of a multi-stage pulp pulverizer is to address industry pain points such as incomplete pulverization, poor fiber uniformity, and difficulty in removing impurities after preliminary processing of papermaking raw materials, thereby achieving the standardized transformation of papermaking raw materials into high-quality pulp. In the papermaking pulping process, traditional single-stage pulverizing equipment often over-pulverizes raw materials, leading to excessively short fiber breakage and affecting paper strength. Furthermore, manual impurity removal is inefficient and incomplete. This equipment specifically solves these problems. Through a multi-stage progressive crushing and grinding structure, coupled with specialized processing components adapted to the characteristics of the raw materials, and precise speed and pressure control, it gradually refines lumpy and fiber bundle-like raw materials into single fibers or fine fiber bundles, meeting the fiber length and uniformity requirements of different paper production processes. Simultaneously, a built-in screening mechanism removes impurities from the raw materials, ensuring stable pulp concentration and preventing paper defects such as spots and holes during subsequent papermaking processes, thus providing high-quality fiber raw materials for pulping and papermaking.

[0003] The core components of a multi-stage pulp shredder include a feeding pretreatment mechanism, a coarse crushing mechanism, a fine crushing and grinding mechanism, and a discharge screening mechanism. The feeding pretreatment mechanism has a feed hopper responsible for speed control and impurity removal; the coarse crushing mechanism includes a jaw crusher or a twin-shaft shredder to achieve coarse crushing of the raw materials; the medium crushing mechanism uses a hammer crusher or a roller crusher to separate fiber bundles; the fine crushing and grinding mechanism is equipped with a disc mill and a conical refiner to refine the fibers and remove impurities; the discharge screening mechanism has a pressure screen, a conveyor, and a return pipe to screen and return substandard raw materials. During operation, after pretreatment and impurity removal, the raw materials are first crushed into small pieces by the coarse crushing mechanism, then separated into fiber bundles by the medium crushing mechanism, then refined into fibers by the fine crushing and grinding mechanism, and finally separated into qualified pulp and impurities by the discharge screening mechanism. Impurities are returned for secondary processing, while qualified pulp is conveyed to the next process.

[0004] In existing technologies, some multi-stage pulp shredders require cumbersome replacement of toothed rollers of different specifications when processing different raw materials. However, since multi-stage models inherently require more frequent maintenance, and replacement necessitates disassembling the entire structure, the operation is extremely tedious, causing inconvenience and increased labor costs in daily work. Therefore, a multi-stage pulp shredder for papermaking is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-layer pulp shredder for papermaking, aiming to improve the problem of inconvenient toothed roller replacement in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-layer pulp pulverizer for papermaking, comprising a fine crushing chamber, a replacement mechanism fixedly connected to the right side of the fine crushing chamber, a discharge port fixedly connected to the left side of the fine crushing chamber, a coarse material chamber fixedly connected to the top of the fine crushing chamber, a cleaning mechanism fixedly connected to the right side of the coarse material chamber, a toothed roller fixedly connected to the right side of the coarse material chamber, the replacement mechanism comprising a base plate, the left side of the base plate fixedly connected to the right side of the fine crushing chamber, two pins fixedly connected to the right side of the base plate, two clamping plates fixedly connected to the outside of the two pins, a sliding column slidably connected to the adjacent side of the two clamping plates, a sliding spring sleeved on the outside of the sliding column, a button column fixedly connected to the right side of the sliding column, guide columns slidably connected to the distant side of the two clamping plates, guide column springs sleeved on the outside of the multiple guide columns, and a protective component slidably connected to the outside of the button column; As a further description of the above technical solution: the cleaning mechanism includes a housing, the left side of which is fixedly connected to the right side of the coarse material chamber, a motor box is fixedly connected to the inner wall of the housing, a rotating shaft is rotatably connected inside the motor box, rotating plates are fixedly connected to both sides of the rotating shaft, a rotating column is fixedly connected to the left side of the rotating plate, a groove plate is slidably connected to the outside of the rotating column, a moving column is fixedly connected to the left side of the groove plate, and a cleaning strip is fixedly connected to the left side of the moving column. As a further description of the above technical solution: the protective component includes two protective shells, the inner walls of the two protective shells are slidably connected to the outside of the button post, and a mounting plate is fixedly connected to the left side of the two protective shells; As a further description of the above technical solution: the adjacent sides of the plurality of guide post springs are fixedly connected to the distant sides of the two clamping plates, and the right side of the sliding spring is fixedly connected to the left side of the button post; As a further description of the above technical solution: the outer side of the moving column is slidably connected to the inner wall of the coarse material chamber, and the front part of the cleaning strip is slidably connected to the inner wall of the coarse material chamber; As a further description of the above technical solution: the left side of the clamping plate is slidably connected to the right side of the mounting plate, and the right side of the mounting plate is fixedly connected to the right side of the base plate; As a further description of the above technical solution: the left side of the sliding spring is fixedly connected to the right side of the mounting plate, and the opposite sides of the plurality of guide springs are fixedly connected to the inner wall of the protective shell.

[0007] As a further description of the above technical solution: the opposite sides of the plurality of guide posts are fixedly connected to the inner wall of the protective shell, and the outer side of the pin post is slidably connected to the inner wall of the mounting plate; This utility model has the following beneficial effects: 1. In this utility model, pressing the button causes the button to compress the spring inward. At the same time, when the head of the button moves in a conical shape, the clamps on both sides compress the guide spring at both ends. The clamps open, allowing the pin to slide out easily from the entire protective assembly. When inserting a new pin, the front of the pin resembles a frustum and is inserted between the clamps. Under the tension of the guide spring, the clamps hold the pin in place, allowing the mounting plate to be fixed on the base plate. This achieves the function of quickly replacing and disassembling the entire toothed roller structure. Compared with the prior art, this significantly shortens the replacement time of the toothed roller and reduces the technical difficulty of the disassembly operation.

[0008] 2. In this utility model, when stains adhere to the inner wall of the coarse material chamber, the motor box drives the rotating shaft to rotate. The rotating shaft rotates simultaneously with the fixedly connected rotating plate, causing the rotating plate to rotate on a fixed axis. The other end of the rotating plate is fixed to the rear of the rotating column, and the front end of the rotating shaft slides on the inner wall of the trough plate. When the rotating plate moves with the rotating column, the trough plate reciprocates. The left side of the trough plate carries a moving column, and the left side of the moving column carries a cleaning strip. When the trough plate reciprocates, the cleaning scraper cleans back and forth inside, thereby achieving the cleaning function of internal stains. Compared with the prior art, it has the effect of cleaning the raw materials adhering to the inner wall during internal operation. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a multi-layer pulp shredder for papermaking proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a substrate for a multi-layer pulp pulverizer used in papermaking, as proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0010] Legend: 1. Small, fragmented cavity; 2. Replacement mechanism; 21. Base plate; 22. Pin post; 23. Clamping plate; 24. Sliding post; 25. Sliding spring; 26. Button post; 27. Guide post; 28. Guide post spring; 29. Protective components; 291. Housing; 292. Mounting plate; 3. Discharge port; 4. Coarse material chamber; 5. Cleaning mechanism; 51. Housing; 52. Motor box; 53. Shaft; 54. Rotating plate; 55. Rotating column; 56. Slot plate; 57. Moving column; 58. Cleaning strip; 6. Toothed roller. Detailed Implementation

[0011] 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. Example

[0012] A multi-stage pulp shredder for papermaking, as described in the reference Figures 1 to 3 The system includes a fine crushing chamber 1, which is responsible for refining the pulp; a replacement mechanism 2 is fixedly connected to the right side of the fine crushing chamber 1 for quick replacement of internal wear parts; a discharge port 3 is fixedly connected to the left side of the fine crushing chamber 1 for discharging the processed pulp; a coarse material chamber 4 is fixedly connected to the top of the fine crushing chamber 1 for initially crushing the raw materials; a cleaning mechanism 5 is fixedly connected to the right side of the coarse material chamber 4 to clean the residue inside the chamber; and a toothed roller 6 is fixedly connected to the right side of the coarse material chamber 4 for initially crushing the raw materials. The replacement mechanism 2 includes a base plate 21, which serves as the mounting foundation for the entire mechanism. The left side of the base plate 21 is fixedly connected to the right side of the crushing chamber 1 to ensure a stable and reliable connection. Two pin posts 22 are fixedly connected to the right side of the base plate 21 for positioning and support. Two clamping plates 23 are fixedly connected to the outside of the two pin posts 22 for clamping and fixing components. A sliding post 24 is slidably connected to the adjacent side of the two clamping plates 23, which can drive the clamping plates 23 to move relative to each other. A sliding spring 25 is sleeved on the outside of the sliding post 24 to provide reset and clamping elasticity. A button post 26 is fixedly connected to the right side of the sliding post 24 for convenient manual operation and control. Guide posts 27 are slidably connected to the distant side of the two clamping plates 23 to ensure smooth sliding of the clamping plates 23. Guide post springs 28 are sleeved on the outside of the multiple guide posts 27 to enhance the buffering and reset effect. A protective component 29 is slidably connected to the outside of the button post 26 to prevent accidental contact and external damage. Specifically, during equipment operation, if there are residues on the inner wall of the coarse material chamber 4, the cleaning mechanism 5 begins cleaning to ensure the chamber wall is clean. The processed raw material enters the fine crushing chamber 1 for further refinement and is finally discharged from the left outlet 3. When parts in the fine crushing chamber 1 are damaged and need to be replaced, the replacement mechanism 2 is operated: press the button post 26, allowing the button post 26 to move outside the sliding post 24, compressing the sliding spring 25. At the same time, the two clamping plates 23 slide to both sides along the guide post 27, compressing the guide post spring 28 and releasing the clamp on the pin post 22. After replacement, release the button post 26, and the sliding spring 25 and guide post spring 28 reset the two clamping plates 23, which then re-clamp the new pin post 22. During the process, the protective component 29 protects the internal components, the pin post 22 ensures the stability of the clamping plates 23, and the base plate 21 and mounting plate 292 provide stable support.

[0013] Reference Figure 2 and Figure 4 The cleaning mechanism 5 includes a housing 51, which provides protection and support for the internal components. The left side of the housing 51 is fixedly connected to the right side of the coarse material chamber 4 to ensure a stable and well-sealed installation. A motor box 52 is fixedly connected to the inner wall of the housing 51 to protect the motor from slurry erosion. The motor box 52 is rotatably connected to a rotating shaft 53, which can transmit power to achieve rotation. Rotating plates 54 are fixedly connected to both sides of the rotating shaft 53, which drive the movement of related components. A rotating column 55 is fixedly connected to the left side of the rotating plate 54 to convert rotation into reciprocating power. A grooved plate 56 is slidably connected to the outside of the rotating column 55 to convert circular motion into linear motion. A moving column 57 is fixedly connected to the left side of the grooved plate 56 to transmit power to drive the cleaning components. A cleaning strip 58 is fixedly connected to the left side of the moving column 57 to reciprocate and wipe the residue on the inner wall of the coarse material chamber 4. Specifically, when the cleaning mechanism 5 is working, the drive assembly inside the motor box 52 drives the rotating shaft 53 to rotate at a constant speed in a circular motion. The rotating plates 54 on both sides of the rotating shaft 53 then perform fixed-axis motion, and the rotating column 55 on the left side of the rotating plate 54 also forms a circular motion. Because the rotating column 55 is slidably connected in the trough plate 56, the trough plate 56 restricts the rotation of the rotating column 55 into a horizontal reciprocating linear motion. The moving column 57 connected to the left side of the trough plate 56 reciprocates synchronously, thereby driving the cleaning strip 58 on its left side to perform a horizontal reciprocating wiping along the inner wall of the coarse material chamber 4, continuously scraping and removing residual slurry from the inner wall, and avoiding localized residue accumulation.

[0014] Reference Figure 1 and Figure 3 The protective component 29 includes two protective shells 291, forming a closed space to prevent dust intrusion; the inner walls of the two protective shells 291 are slidably connected to the outside of the button post 26 to ensure flexible button operation; the left side of the two protective shells 291 is fixedly connected to the mounting plate 292 to enhance the overall structural stability; the adjacent sides of multiple guide post springs 28 are fixedly connected to the distant sides of two clamping plates 23 to provide uniform reset force; the right side of the sliding spring 25 is fixedly connected to the left side of the button post 26 to ensure automatic button return; the outside of the moving post 57 is slidably connected to the inner wall of the coarse material chamber 4 to limit the movement trajectory and prevent deviation; the front part of the cleaning strip 58 is slidably connected to the inner wall of the coarse material chamber 4, closely fitting to enhance the cleaning effect; The left side of the clamping plate 23 is slidably connected to the right side of the mounting plate 292 to improve smooth sliding; the right side of the mounting plate 292 is fixedly connected to the right side of the base plate 21 to strengthen the component connection strength; the left side of the sliding spring 25 is fixedly connected to the right side of the mounting plate 292 to form a stable elastic support; the opposite sides of the multiple guide post springs 28 are fixedly connected to the inner wall of the protective shell 291 to balance the force; the opposite sides of the multiple guide posts 27 are fixedly connected to the inner wall of the protective shell 291 to ensure accurate and reliable guidance; the outer side of the pin post 22 is slidably connected to the inner wall of the mounting plate 292 to assist in positioning and improve the accuracy during installation. Specifically, in the protective assembly 29, the protective shell 291 is fixed to the right side of the base plate 21 by the mounting plate 292, forming a closed space, and the guide post 27 on the inner wall of the protective shell 291 accurately guides the sliding of the clamping plate 23. When the button post 26 is pressed, the two clamping plates 23 compress the sliding springs 25 on both sides, and at the same time drive the pin post 22 to slide along the inner wall of the mounting plate 292; the clamping plate 23 moves with the button post 26, stretching the guide post spring 28 on the inner wall of the protective shell 291. After the button is released, the sliding spring 25 rebounds and pushes the button post 26 to reset, and the guide post spring 28 pulls the clamping plate 23 back to its position. The moving post 57 and the cleaning strip 58 slide along the inner wall of the coarse material chamber 4 respectively to ensure the cleaning effect, and the overall structure works together to achieve the protective function.

[0015] The implementation principle of this application embodiment is as follows: When using this product, if it is necessary to replace the toothed roller 6 structure, press the button post 26, which will compress the spring inward. At the same time, the conical structure at the head forces the clamping plates 23 on both sides to move to both ends and compress the guide post spring 28, causing the clamping plates 23 to open. At this time, the pin post 22 can easily slide out of the protective component 29, completing the disassembly. When replacing the new pin post 22, because its front side is similar to a frustum, it will naturally push the clamping plate 23 open during the insertion process. After it is fully inserted, the tension of the guide post spring 28 causes the clamping plate 23 to reset and lock the pin post 22, fixing the mounting plate 292 on the base plate 21, thus realizing the quick replacement of the toothed roller 6.

[0016] When stains adhere to the inner wall of the coarse material chamber 4, the motor box 52 starts, driving the rotating shaft 53 to rotate. The rotating shaft 53 drives the rotating plate 54 to rotate on a fixed axis, and the rotating column 55 at the other end of the rotating plate 54 moves accordingly. Since the front end of the rotating column 55 slides on the inner wall of the groove plate 56, the circular motion of the rotating plate 54 is converted into the reciprocating motion of the groove plate 56. The groove plate 56 drives the moving column 57, which in turn causes the cleaning strip 58 to slide back and forth inside the coarse material chamber 4 to clean the stains on the inner wall. The moving column 57 and the cleaning strip 58 slide along the inner wall of the coarse material chamber 4 to achieve the cleaning effect, realize the rapid replacement of the toothed roller 6 and ensure efficient internal cleaning.

[0017] 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 multi-layer pulp shredder for papermaking, comprising a fine shredding chamber (1), characterized in that: A replacement mechanism (2) is fixedly connected to the right side of the fine crushing chamber (1), a discharge port (3) is fixedly connected to the left side of the fine crushing chamber (1), a coarse material chamber (4) is fixedly connected to the top of the fine crushing chamber (1), a cleaning mechanism (5) is fixedly connected to the right side of the coarse material chamber (4), and a toothed roller (6) is fixedly connected to the right side of the coarse material chamber (4). The replacement mechanism (2) includes a base plate (21). The left side of the base plate (21) is fixedly connected to the right side of the fine crushing chamber (1). Two pins (22) are fixedly connected to the right side of the base plate (21). Two clamping plates (23) are fixedly connected to the outside of the two pins (22). A sliding column (24) is slidably connected to the adjacent side of the two clamping plates (23). A sliding spring (25) is sleeved on the outside of the sliding column (24). A button column (26) is fixedly connected to the right side of the sliding column (24). A guide column (27) is slidably connected to the distant side of the two clamping plates (23). A guide column spring (28) is sleeved on the outside of the multiple guide columns (27). A protective component (29) is slidably connected to the outside of the button column (26).

2. The multi-layer pulp pulverizer for papermaking according to claim 1, characterized in that: The cleaning mechanism (5) includes a housing (51), the left side of which is fixedly connected to the right side of the coarse material chamber (4). A motor box (52) is fixedly connected to the inner wall of the housing (51). A rotating shaft (53) is rotatably connected inside the motor box (52). A rotating plate (54) is fixedly connected to both sides of the rotating shaft (53). A rotating column (55) is fixedly connected to the left side of the rotating plate (54). A groove plate (56) is slidably connected to the outside of the rotating column (55). A moving column (57) is fixedly connected to the left side of the groove plate (56). A cleaning strip (58) is fixedly connected to the left side of the moving column (57).

3. A multi-layer pulp pulverizer for papermaking according to claim 1, characterized in that: The protective component (29) includes two protective shells (291), the inner walls of the two protective shells (291) are slidably connected to the outside of the button post (26), and a mounting plate (292) is fixedly connected to the left side of the two protective shells (291).

4. A multi-layer pulp pulverizer for papermaking according to claim 2, characterized in that: The adjacent sides of the multiple guide post springs (28) are fixedly connected to the distant sides of the two clamps (23), and the right side of the sliding spring (25) is fixedly connected to the left side of the button post (26).

5. A multi-layer pulp pulverizer for papermaking according to claim 2, characterized in that: The outer side of the movable column (57) is slidably connected to the inner wall of the coarse material chamber (4), and the front part of the cleaning strip (58) is slidably connected to the inner wall of the coarse material chamber (4).

6. A multi-layer pulp pulverizer for papermaking according to claim 3, characterized in that: The left side of the clamping plate (23) is slidably connected to the right side of the mounting plate (292), and the right side of the mounting plate (292) is fixedly connected to the right side of the base plate (21).

7. A multi-layer pulp pulverizer for papermaking according to claim 3, characterized in that: The left side of the sliding spring (25) is fixedly connected to the right side of the mounting plate (292), and the opposite sides of the plurality of guide springs (28) are fixedly connected to the inner wall of the protective shell (291).

8. A multi-layer pulp pulverizer for papermaking according to claim 3, characterized in that: The opposite sides of the plurality of guide posts (27) are fixedly connected to the inner wall of the housing (291), and the outer side of the pin post (22) is slidably connected to the inner wall of the mounting plate (292).

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