Lignin fiber pre-crushing device

By introducing a motor-driven crushing roller and reciprocating screw system into the lignin fiber pre-crushing device, combined with hard bristles and scraper structure, the problem of lignin fiber residue on the surface of the crushing roller is solved, achieving more efficient crushing and diversion effects and avoiding clogging.

CN224221436UActive Publication Date: 2026-05-12YANCHENG SHITENG ENG MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANCHENG SHITENG ENG MATERIALS CO LTD
Filing Date
2025-05-28
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In existing lignin fiber crushing devices, lignin fibers easily adhere to and remain on the outer wall of the crushing roller during use, resulting in the blockage problem not being effectively solved.

Method used

A lignin fiber pre-crushing device was designed, which adopts a motor-driven crushing roller and a reciprocating screw system, combined with a hard brush and scraper structure to achieve cleaning of the crushing roller surface and uniform spreading of materials. The hard brush removes the attached materials, and the scraper and diversion screen structure improves the crushing efficiency.

Benefits of technology

It effectively prevents lignin fiber residue on the surface of the crushing roller, improves crushing efficiency and material diversion effect, and ensures that the crushed material can pass through the diversion screen plate better, avoiding the occurrence of blockage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of crushing, and discloses a lignin fiber pre-crushing device which comprises a machine body, a feeding opening is formed in the outer wall of the machine body, a reciprocating lead screw can be synchronously driven to rotate when a motor drives a crushing roller to rotate, and then a limited sliding block drives an L-shaped plate to move; and when the two sets of mounting plates move in the opposite directions, the two sets of toughness plates can be mutually extruded and contacted, and then when the two sets of toughness plates are thoroughly separated from each other, the torsion spring sleeves and the mounting plates can be driven to move, so that the crushing rollers can be crushed, and the crushing rollers can be crushed. And therefore, when the mounting plate swings, the contact brushing effect of the hard bristles on the crushing roller can be improved, and when the L-shaped plate moves, the tough extension plate and the scraping plate can be synchronously driven to move, so that the scraping plate can uniformly spread materials accumulated on the surface of the flow dividing sieve plate, and the crushed materials can better pass through the flow dividing sieve plate.
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Description

Technical Field

[0001] This utility model relates to the field of crushing technology, specifically a lignin fiber pre-crushing device. Background Technology

[0002] Crushing equipment mainly includes jaw crushers, cone crushers, gyratory crushers, hammer crushers, roller crushers, impact crushers, and impact crushers, which fall under the category of engineering machinery. Lignocellulose fibers also need to be crushed during processing.

[0003] According to a public notice (Announcement No.: CN219051577U) of a crushing device for producing lignin fiber, the above application uses a crushing roller, a transmission gear, a pulley, a drive assembly, and a screening assembly to achieve one-time crushing of wood pulp blocks, retaining the incompletely crushed wood pulp blocks and avoiding the incompletely crushed fragments from being discharged together.

[0004] However, in actual use, although the above-mentioned equipment can effectively crush and export in batches, some lignin fibers will adhere to and remain on the outer wall of the crushing roller when crushing wood pulp blocks. If they are not removed in time, they will cause subsequent blockage. In view of this, we propose a lignin fiber pre-crushing device. Utility Model Content

[0005] The purpose of this invention is to provide a lignin fiber pre-crushing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lignin fiber pre-crushing device, comprising a machine body, a feeding port on the outer wall of the machine body, a secondary crushing component on the inner wall of the machine body, an anti-adhesion component on the inner wall of the machine body, the anti-adhesion component comprising a motor, a crushing roller fixedly connected to the output end of the motor through the machine body, a reciprocating screw fixedly connected to the end of the crushing roller through the machine body, a mounting frame fixedly connected to the outer wall of the machine body, a slider slidably connected to the outer wall of the reciprocating screw, an L-shaped plate fixedly connected to the outer wall of the slider, a torsion spring sleeve fixedly connected to the outer wall of the L-shaped plate, and a mounting plate fixedly connected to the torsion spring sleeve via a torsion spring;

[0007] A tough plate is fixedly connected to the outer wall of the mounting plate. A hard brush is fixedly connected to the outer wall of the mounting plate. A tough extension plate is fixedly connected to the bottom end of the L-shaped plate. A scraper is fixedly connected to the end of the tough extension plate. A diversion screen plate is fixedly connected to the inner wall of the machine body. A guide rod is fixedly connected to the inner wall of the machine body.

[0008] Preferably, the inner wall of the L-shaped plate is slidably connected to the outer wall of the guide rod, so that the L-shaped plate can move smoothly.

[0009] Preferably, the number of hard bristles is several, and the several hard bristles are arranged in a linear array on the outer wall of the mounting plate.

[0010] Preferably, the centerline of the slider, the centerline of the L-shaped plate, and the centerline of the reciprocating lead screw are all on the same plane.

[0011] Preferably, the outer wall of the diversion screen plate is provided with a diversion component, the diversion component includes a cutting plate, the cutting plate is fixedly connected to the outer wall of the diversion screen plate, and an extension column is fixedly connected to the side wall of the cutting plate.

[0012] Preferably, the number of extension columns is several, and the several extension columns are arranged in a linear array on the outer wall of the cutting plate.

[0013] Preferably, the center line of the cutting plate and the center line of the diversion screen plate are on the same straight line, so that the cutting plate can separate the wood that has been initially crushed and fallen.

[0014] Compared with the prior art, the present invention provides a lignin fiber pre-crushing device, which has the following beneficial effects:

[0015] 1. In this lignin fiber pre-crushing device, when the motor drives the crushing roller to rotate, it simultaneously drives the reciprocating screw to rotate, which in turn causes the limited slider to move the L-shaped plate. This allows the hard bristles on the mounting plate to brush the outer wall of the crushing roller, preventing lignin fibers from remaining on the surface of the crushing roller. When the two sets of mounting plates move towards each other, the two sets of flexible plates will squeeze and touch each other. When the two sets of flexible plates completely separate, they will drive the torsion spring sleeve and the mounting plate to move. This allows the mounting plate to swing, which enhances the brushing effect of the hard bristles on the crushing roller. When the L-shaped plate moves, it simultaneously drives the flexible extension plate and the scraper to move, allowing the scraper to evenly distribute the material accumulated on the surface of the diversion screen plate, so that the crushed material can pass through the diversion screen plate better.

[0016] 2. In this lignin fiber pre-crushing device, when the crushed wood pulp blocks fall onto the diversion screen plate, the cutting plate can divide and divert the initially crushed wood, ensuring that the subsequent materials can be finely crushed. When the L-shaped plate moves the toughness extension plate and scraper, the toughness extension plate is periodically squeezed and deformed by the extension column. Finally, when the toughness extension plate returns to its original position, it will drive the scraper to swing, so that the scraper can better spread the material accumulated on the surface of the diversion screen plate, and at the same time, the overall practicality is further improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the reciprocating lead screw structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the flow divider screen plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cutting plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the extension column and scraper structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the L-shaped plate and torsion spring sleeve structure of this utility model.

[0023] In the diagram: 1. Machine body; 2. Feed inlet; 3. Secondary crushing assembly; 4. Anti-adhesion assembly; 401. Motor; 402. Crushing roller; 403. Reciprocating screw; 404. Slider; 405. L-shaped plate; 406. Torsion spring sleeve; 407. Mounting plate; 408. Tough plate; 409. Hard bristles; 410. Tough extension plate; 411. Scraper; 412. Diverting screen plate; 413. Guide rod; 414. Mounting frame; 5. Dividing and diverting assembly; 501. Cutting plate; 502. Extension column. Detailed Implementation

[0024] like Figures 1-6 As shown, this utility model provides a technical solution: a lignin fiber pre-crushing device, including a body 1, a feeding port 2 on the outer wall of the body 1, a secondary crushing component 3 on the inner wall of the body 1, and an anti-adhesion component 4 on the inner wall of the body 1. The anti-adhesion component 4 includes a motor 401, a crushing roller 402 fixedly connected to the output end of the motor 401 through the body 1, a reciprocating screw 403 fixedly connected to the end of the crushing roller 402 through the body 1, a mounting frame 414 fixedly connected to the outer wall of the body 1, a slider 404 slidably connected to the outer wall of the reciprocating screw 403, an L-shaped plate 405 fixedly connected to the outer wall of the slider 404, a torsion spring sleeve 406 fixedly connected to the outer wall of the L-shaped plate 405, and a mounting plate 407 fixedly connected to the torsion spring sleeve 406 through a torsion spring.

[0025] Furthermore, the toughness plate 408 is fixedly connected to the outer wall of the mounting plate 407, the outer wall of the mounting plate 407 is fixedly connected to a hard brush bristle 409, the bottom end of the L-shaped plate 405 is fixedly connected to a toughness extension plate 410, the end of the toughness extension plate 410 is fixedly connected to a scraper 411, the inner wall of the machine body 1 is fixedly connected to a flow divider sieve plate 412, and the inner wall of the machine body 1 is fixedly connected to a guide rod 413.

[0026] In this embodiment of the utility model, the inner wall of the L-shaped plate 405 is slidably connected to the outer wall of the guide rod 413, so that the L-shaped plate 405 can be moved smoothly. The number of hard bristles 409 is several, and the several hard bristles 409 are arranged in a linear array on the outer wall of the mounting plate 407. The center line of the slider 404, the center line of the L-shaped plate 405, and the center line of the reciprocating screw 403 are all on the same plane.

[0027] Furthermore, the outer wall of the diversion screen plate 412 is provided with a dividing and diverting component 5, which includes a cutting plate 501. The cutting plate 501 is fixedly connected to the outer wall of the diversion screen plate 412. The side wall of the cutting plate 501 is fixedly connected with an extension column 502. The number of extension columns 502 is several, and the several extension columns 502 are arranged in a linear array on the outer wall of the cutting plate 501. The center line of the cutting plate 501 and the center line of the diversion screen plate 412 are on the same straight line, so that the cutting plate 501 can separate the wood that has been initially crushed and fallen.

[0028] In this invention, during daily use, the motor 401 and the secondary crushing component 3 are started, and then an appropriate amount of wood pulp blocks are added to the feeding port 2. The wood pulp blocks are crushed by two sets of counter-rotating crushing rollers 402 after falling. The crushed wood pulp blocks fall onto the diversion screen plate 412. Materials of suitable size after crushing are discharged through the diversion screen plate 412, while excessively large wood pulp blocks slide along the inclined surface of the diversion screen plate 412 and are subsequently crushed by the secondary crushing component 3, ensuring the crushing effect. When the motor 401 drives the crushing rollers 402 to rotate, it simultaneously drives the reciprocating screw 403 to rotate, causing the limited slider 404 to move the L-shaped plate 405, thereby causing the mounting plate 40... The hard bristles 409 on plate 7 can brush the outer wall of the crushing roller 402 to prevent lignin fibers from remaining on the surface of the crushing roller 402. When the two sets of mounting plates 407 move towards each other, the two sets of flexible plates 408 will squeeze and touch each other. When the two sets of flexible plates 408 completely separate, they will drive the torsion spring sleeve 406 and the mounting plate 407 to move. This will improve the brushing effect of the hard bristles 409 on the crushing roller 402 when the mounting plate 407 swings. When the L-shaped plate 405 moves, it will simultaneously drive the flexible extension plate 410 and the scraper 411 to move. This will allow the scraper 411 to evenly distribute the material accumulated on the surface of the diversion screen plate 412, so that the crushed material can pass through the diversion screen plate 412 better.

[0029] When the crushed wood pulp blocks fall onto the diversion screen plate 412, the cutting plate 501 can divide and divert the initially crushed wood, ensuring that the subsequent materials can be finely crushed. When the L-shaped plate 405 moves the toughness extension plate 410 and the scraper 411, the toughness extension plate 410 will be periodically squeezed and deformed by the extension column 502. Finally, when the toughness extension plate 410 is reset, it will drive the scraper 411 to swing, so that the scraper 411 can better spread the material accumulated on the surface of the diversion screen plate 412, and at the same time further improve the overall practicality.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A lignin fiber pre-crushing device, comprising a body (1), wherein a feeding port (2) is provided on the outer wall of the body (1), and a secondary crushing component (3) is provided on the inner wall of the body (1), characterized in that: The inner wall of the body (1) is provided with an anti-adhesion component (4), the anti-adhesion component (4) comprising: A motor (401) is fixedly connected to a crushing roller (402) through the machine body (1) at its output end. A reciprocating screw (403) is fixedly connected to the end of the crushing roller (402) through the machine body (1). A mounting bracket (414) is fixedly connected to the outer wall of the machine body (1). A slider (404) is slidably connected to the outer wall of the reciprocating screw (403). An L-shaped plate (405) is fixedly connected to the outer wall of the slider (404). A torsion spring sleeve (406) is fixedly connected to the outer wall of the L-shaped plate (405). A mounting plate (407) is fixedly connected to the torsion spring sleeve (406) through the torsion spring. A tough plate (408) is fixedly connected to the outer wall of the mounting plate (407). A hard brush (409) is fixedly connected to the outer wall of the mounting plate (407). A tough extension plate (410) is fixedly connected to the bottom end of the L-shaped plate (405). A scraper (411) is fixedly connected to the end of the tough extension plate (410). A diversion screen plate (412) is fixedly connected to the inner wall of the machine body (1). A guide rod (413) is fixedly connected to the inner wall of the machine body (1).

2. The lignin fiber pre-crushing device according to claim 1, characterized in that: The inner wall of the L-shaped plate (405) is slidably connected to the outer wall of the guide rod (413).

3. The lignin fiber pre-crushing device according to claim 1, characterized in that: The number of hard bristles (409) is several, and the several hard bristles (409) are arranged in a linear array on the outer wall of the mounting plate (407).

4. The lignin fiber pre-crushing device according to claim 1, characterized in that: The centerline of the slider (404), the centerline of the L-shaped plate (405), and the centerline of the reciprocating screw (403) are all on the same plane.

5. The lignin fiber pre-crushing device according to claim 1, characterized in that: The outer wall of the diversion screen plate (412) is provided with a diversion component (5), which includes a cutting plate (501). The cutting plate (501) is fixedly connected to the outer wall of the diversion screen plate (412), and an extension column (502) is fixedly connected to the side wall of the cutting plate (501).

6. The lignin fiber pre-crushing device according to claim 5, characterized in that: The number of extension columns (502) is several, and the several extension columns (502) are arranged in a linear array on the outer wall of the cutting plate (501).

7. The lignin fiber pre-crushing device according to claim 5, characterized in that: The centerline of the cutting plate (501) and the centerline of the diversion screen plate (412) are on the same straight line.