A shredder

Abstract

The utility model belongs to the technical field of pulverizer, disclose a kind of pulverizer, including pulverizer body, the inside of pulverizer body is provided with pulverizing bin, the bottom of pulverizing bin is the semicircular screening surface formed by screen, be provided with moving knife pulverizing component in pulverizing bin, still be provided with fixed knife pulverizing component on the pulverizer body, fixed knife pulverizing component one end extends to the inside of pulverizing bin and is matched with moving knife pulverizing component to material is carried out shearing and crushing;The side of pulverizer body is provided with hydraulic maintenance component, and the hydraulic maintenance component includes hydraulic pull rod, one end of hydraulic pull rod is hinged to the side of pulverizer body, the other end is hinged with the one end of maintenance connecting arm, and maintenance connecting arm is rotatably arranged on the pulverizer body by rotating shaft, and maintenance connecting arm is connected maintenance baffle, and the shape of upper portion of maintenance baffle is adapted to the radian profile of screen;The utility model can carry out repeated shearing to unqualified material, and hydraulic maintenance component can simplify maintenance process, improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of crusher technology, and specifically relates to a crusher. Background Technology

[0002] Shear crushers are widely used for crushing materials such as wood and plastics. Their core principle is to achieve crushing through the shearing action between moving and fixed blades on a rotating drum. Existing technology, such as the "Wood Crusher" with authorized publication number CN112844695B, adopts a design where the moving blades are discretely installed on the rotating drum, and the shearing effect is enhanced by fixed blades on the machine body and stepped screen blades. However, this type of solution still has obvious defects. The gap distribution of the moving blades leads to discontinuous shearing force, and materials tend to accumulate at the bottom of the powder chamber, forming dead corners. At the same time, although the stepped screen can assist the fixed blades, it is only a passive filtration unit, and the unsheared materials will accumulate at the bottom, affecting production efficiency. Furthermore, equipment maintenance depends on disassembling the frame, which is relatively cumbersome and affects the continuity of production.

[0003] In conclusion, there is an urgent need for a pulverizer that can continuously crush materials until they reach the required particle size and is easier to maintain. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides a crusher with simple structure, convenient use, and the ability to prevent unqualified materials from accumulating at the bottom. The equipment is easy to maintain and has high production efficiency.

[0005] The technical solution adopted by this utility model is as follows: a crusher, including a crusher body, a feeding port at the top of the crusher body, a crushing chamber inside the crusher body, a semi-circular screening surface at the bottom of the crushing chamber composed of a screen, a moving blade crushing assembly inside the crushing chamber, the moving blade crushing assembly having a circular structure, the lower half of the moving blade crushing assembly being located within the semi-circular screening surface at the bottom of the crushing chamber, and the distance between the bottom of the moving blade crushing assembly and the screen being 5-15mm; a fixed blade crushing assembly is also provided on the crusher body, one end of the fixed blade crushing assembly extending into the crushing chamber and cooperating with the moving blade crushing assembly for shearing and crushing the material; a hydraulic maintenance assembly is provided on one side of the crusher body, the hydraulic maintenance assembly including a hydraulic pull rod, one end of the hydraulic pull rod being hinged to one side of the crusher body, and the other end being hinged to one end of a maintenance connecting arm, the maintenance connecting arm being rotatably mounted on the crusher body via a rotating shaft, the maintenance connecting arm being connected to a maintenance baffle, the upper part of the maintenance baffle having a shape adapted to the arc contour of the screen, and being fixed to the crusher body by a detachable component.

[0006] The moving blade crushing assembly includes a rotating shaft connected to a drive device. Moving blades are evenly arranged on the outer peripheral wall of the rotating shaft to form a circular crushing structure.

[0007] The fixed blade crushing assembly includes a support block, which is fixed to the crusher body. Fixed blades are inclinedly arranged on the support block, and the blade head of the fixed blades extends into the crushing chamber, forming a shearing gap with the moving blades on the rotation path.

[0008] The screen is a semi-circular arc panel with a central angle greater than 180 degrees, designed to cover the lower half of the moving blade crushing assembly.

[0009] The detachable components are bolts or quick-release clips, which are used to enable the quick installation and removal of the maintenance baffle.

[0010] The drive unit is an electric motor or a hydraulic motor, which is connected to the rotating shaft of the moving blade crushing assembly through a transmission mechanism.

[0011] The beneficial effects of this utility model are as follows: This utility model adopts an integral cylindrical moving blade, combined with a semi-circular filter screen. The qualified material falls through the filter screen, while the unqualified coarse material is carried up by the cylindrical surface of the moving blade to the upper part of the powder hopper and falls back into the shearing area for secondary crushing. The hydraulic maintenance component can control the opening and closing of the maintenance baffle with one button, simplifying the maintenance process and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0013] The markings in the diagram are: 1. Crusher body, 11. Crushing chamber, 12. Screen; 2. Moving blade crushing assembly, 21. Rotating shaft, 22. Moving blade; 3. Fixed blade crushing assembly, 31. Support block, 32. Fixed blade; 4. Hydraulic maintenance assembly, 41. Hydraulic tie rod, 42. Maintenance arm, 43. Maintenance baffle. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] As shown in the figure, a crusher includes a crusher body 1, a feeding port at the top of the crusher body 1, and a crushing chamber 11 inside the crusher body 1. The bottom of the crushing chamber 11 is a semi-circular screening surface formed by a screen 12. The screen 12 is a semi-circular arc panel with a central angle of 185 degrees, which covers the lower half of the moving blade crushing assembly 2. The moving blade crushing assembly 2 is installed inside the crushing chamber 11. The moving blade crushing assembly 2 includes a rotating shaft 21, which is connected to a drive device. The drive device is a hydraulic motor, which is connected to the rotating shaft 21 of the moving blade crushing assembly 2 through a transmission mechanism. Moving blades 22 are evenly arranged on the outer peripheral wall of the rotating shaft 21 to form a circular crushing structure. The lower half of the moving blade crushing assembly 2 is located in the semi-circular screening surface at the bottom of the crushing chamber 11, and the bottom of the moving blade crushing assembly 2 is 10mm away from the screen 12. The crusher body 1 also has A fixed-blade crushing assembly 3 is provided, which includes a support block 31 fixed to the crusher body 1. A fixed blade 32 is inclinedly arranged on the support block 31, and the blade head of the fixed blade 32 extends into the crushing chamber 11, forming a shearing gap with the moving blade 22 on the rotation path. A hydraulic maintenance assembly 4 is provided on one side of the crusher body 1. The hydraulic maintenance assembly 4 includes a hydraulic pull rod 41, one end of which is hinged to one side of the crusher body 1, and the other end is hinged to one end of the maintenance connecting arm 42. The maintenance connecting arm 42 is rotatably mounted on the crusher body 1 via a rotating shaft. The maintenance connecting arm 42 is connected to a maintenance baffle 43. The upper shape of the maintenance baffle 43 is adapted to the arc contour of the screen 12 and is fixed to the crusher body 1 by a detachable component. The detachable component is a bolt structure, which is used to realize the quick installation and removal of the maintenance baffle 43.

[0016] In operation, this type of crusher is activated by starting the drive unit, which rotates the moving blade crushing assembly 2. The material to be crushed is placed in the crushing chamber 11. The moving blades 22 and the fixed blades 32 work together to crush the material. Material that meets the size requirements passes through the screen 12, while material that does not meet the size requirements is rolled up by the moving blades 22 and then sheared by the fixed blades 32. This process is repeated until the material meets the size requirements and passes through the screen 12. When the crusher needs maintenance, the maintenance arm 42 is pushed upward by the hydraulic lever 41. The maintenance arm 42 rotates around the rotating shaft, causing the maintenance baffle 43 to move downward, facilitating maintenance by personnel. This invention can perform secondary crushing of materials that do not meet the shearing requirements. The hydraulic maintenance assembly 4 can control the opening and closing of the maintenance baffle with one button, simplifying the maintenance process and improving production efficiency.

Claims

1. A pulverizer, comprising a pulverizer body (1), a feeding port being provided at the top of the pulverizer body (1), and a pulverizing chamber (11) being provided inside the pulverizer body (1), characterized in that: The bottom of the crushing chamber (11) is a semi-circular screening surface composed of a screen (12). A moving blade crushing assembly (2) is installed inside the crushing chamber (11). The moving blade crushing assembly (2) has a circular structure. The lower half of the moving blade crushing assembly (2) is located inside the semi-circular screening surface at the bottom of the crushing chamber (11). The bottom of the moving blade crushing assembly (2) is 5-15mm away from the screen (12). A fixed blade crushing assembly (3) is also installed on the crusher body (1). One end of the fixed blade crushing assembly (3) extends into the crushing chamber (11) and cooperates with the moving blade crushing assembly (2) to crush materials. The material is sheared and crushed; a hydraulic maintenance assembly (4) is provided on one side of the crusher body (1). The hydraulic maintenance assembly (4) includes a hydraulic pull rod (41). One end of the hydraulic pull rod (41) is hinged to one side of the crusher body (1), and the other end is hinged to one end of the maintenance arm (42). The maintenance arm (42) is rotatably mounted on the crusher body (1) through a rotating shaft. The maintenance arm (42) is connected to a maintenance baffle (43). The upper part of the maintenance baffle (43) is adapted to the arc contour of the screen (12) and is fixed on the crusher body (1) by a detachable assembly.

2. The pulverizer according to claim 1, characterized in that: The moving blade crushing assembly (2) includes a rotating shaft (21), which is connected to a drive device. Moving blades (22) are evenly arranged on the outer peripheral wall of the rotating shaft (21) to form a circular crushing structure.

3. The pulverizer according to claim 1, characterized in that: The fixed blade crushing assembly (3) includes a support block (31), which is fixed on the crusher body (1). A fixed blade (32) is inclinedly arranged on the support block (31). The blade head of the fixed blade (32) extends into the crushing chamber (11) and forms a shearing gap with the moving blade (22) on the rotation path.

4. The pulverizer according to claim 1, characterized in that: The screen (12) is a semi-circular arc panel with a center angle greater than 180 degrees, so as to wrap the lower half of the moving blade crushing assembly (2).

5. The pulverizer according to claim 1, characterized in that: The detachable components are bolts or quick-release clips, which are used to enable the quick installation and removal of the maintenance baffle (43).

6. The pulverizer according to claim 2, characterized in that: The drive unit is an electric motor or a hydraulic motor, which is connected to the rotating shaft (21) of the moving blade crushing assembly (2) through a transmission mechanism.

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