Novel stationary knife device of single-shaft crusher

Abstract

The utility model relates to the technical field of crushers, and discloses a novel stationary knife device of a single-shaft crusher, which comprises a driving device and a box body, the driving device is arranged on one side of the box body, a rotating shaft of the driving device rotates in the box body, a movable knife and a movable knife spacer bush are sleeved on the rotating shaft of the driving device, and the movable knife spacer bush is sleeved on the rotating shaft of the driving device. The movable cutters and the movable cutter spacer bushes are alternately installed on the shaft, four sets of fixed cutters are fixedly installed on the wall of the box body in a circumferential array mode, and the movable cutters and the fixed cutters are arranged in a staggered mode. According to the novel stationary knife device of the single-shaft crusher, four groups of square holes are formed in four groups of the box body, and stationary knives are arranged in the square holes, so that when a certain stationary knife is overhauled, only the stationary knife needs to be dismounted, and the dismounting, mounting and overhauling are relatively convenient; meanwhile, the sawteeth are arranged on the four sides of the fixed cutter, the fixed cutter can be continuously used after being rotated by 90 degrees and installed when being abraded, and the use and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crushers, in particular to a novel fixed blade device for a single-shaft crusher. Background Art

[0002] The crushing principle of the single-shaft crusher is that the moving knife on the cutter roller and the fixed knife installed on the box body shear and tear each other to achieve crushing. Some manufacturers fix the fixed knife in the box body cavity by welding or bolts. However, whether welding or bolting, there are certain limitations. The fixed knife of the single-shaft crusher is subjected to a large load during operation, and the fixed knife may not be fixed firmly and damaged. The fixed knife is a wearing part. Under actual operating conditions, the fixed knife tool wears out and cannot be used repeatedly, resulting in a short replacement cycle and high operating costs. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a novel fixed blade device for a single-shaft crusher.

[0005] (II) Technical solution

[0006] To solve the above problems, the utility model provides the following technical solutions: a new type of fixed knife device for a single-shaft crusher, comprising a driving device and a box body, wherein the driving device is arranged on one side of the box body, and the rotating shaft of the driving device rotates inside the box body, and a moving knife and a moving knife spacer are sleeved on the rotating shaft of the driving device, and the moving knife and the moving knife spacer are alternately installed on the shaft, and four groups of fixed knives are fixedly installed on the inner wall of the box body in a circular array, and the moving knives and the fixed knives are staggered.

[0007] Preferably, four groups of square holes are opened in a circular array around the box body, and the fixed knife is fixedly installed in the square holes.

[0008] Preferably, a flange plate is fixedly mounted on the upper end of the fixed knife, the flange plate is arranged in a regular square shape, and the flange plate is fixed to the surface of the box body by bolts.

[0009] Preferably, the fixed knife is arranged in a square shape, and saw teeth are arranged on four sides of the fixed knife, which can increase the friction force of the contact surface of the material during the shearing process.

[0010] Preferably, the fixed knife can be rotated 90°, and the fixed knife matches with the square hole on the box body.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the utility model provides a new type of fixed blade device for a single-shaft crusher, which has the following beneficial effects:

[0013] 1. The new fixed knife device of the single-shaft crusher has four groups of square holes in the four groups of the box body. Fixed knives are arranged inside the square holes. When inspecting a fixed knife, only the fixed knife needs to be disassembled, which is convenient for disassembly and inspection. At the same time, saw teeth are arranged on the four sides of the fixed knife. If the fixed knife is worn, it can be rotated and installed for continued use, which reduces the cost of use and maintenance.

[0014] 2. The new fixed blade device of the single-shaft crusher can achieve the purpose of tightening the fixed blade by setting a flange plate, which is fixed on the top of the square hole of the box body by bolts, thereby improving the firmness of the fixed blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a new type of fixed blade device for a single-shaft crusher of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fixed knife installation of the utility model;

[0017] Figure 3 This is a structural schematic diagram of the movable knife spacer of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the flange plate of the utility model.

[0019] In the figure: 1 driving device, 2 housing, 3 moving knife, 4 fixed knife, 5 moving knife spacer, 6 flange plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 The utility model provides a new technical solution: a new type of fixed knife device for a single-shaft crusher, comprising a driving device 1 and a box body 2, wherein the driving device 1 is arranged on one side of the box body 2, and the rotating shaft of the driving device 1 rotates inside the box body 2, and a moving knife, a moving knife 3 and a moving knife spacer 5 are sleeved on the rotating shaft of the driving device 1, and four groups of fixed knives 4 are fixedly installed on the inner wall of the box body 2 in a circular array, and the moving knives 3 and the fixed knives 4 are staggered, so that the materials inside the box body 2 can be shredded.

[0022] In this embodiment, four groups of square holes are opened in a circular array around the box body 2, and the fixed knife 4 is fixedly installed in the square holes. A flange plate 6 is fixedly installed on the upper end of the fixed knife 4. The flange plate 6 is arranged in a regular square shape. The flange plate 6 is fixed to the surface of the box body 2 by bolts. The purpose of tightening the fixed knife 4 is achieved through the square holes and the flange plate 6, thereby improving the firmness of the fixed knife 4.

[0023] In this embodiment, the fixed knife 4 is arranged in a square shape, and serrations are arranged on the four sides of the fixed knife 4, which increases the friction of the contact surface of the material during the shearing process. The fixed knife 4 can be rotated 90° for use, and can be rotated four times in total, which can increase the service life of the fixed knife 4. When the box body 2 is assembled into the inside of the box body 2, the fixed knife 4 cooperates with the square holes on the box body 2. When the fixed knife 4 is worn, it can be rotated 90° and installed for continued use, which reduces the cost of use and maintenance.

[0024] Working principle: When installing the fixed knife of the new fixed knife device of the single-shaft crusher, first align the fixed knife 4 with the square holes on the upper and lower sides of the box body 2 and put it in, and then fix the fixed knife 4 on the surface of the box body 2 through the flange plate 6 and bolts. When in use, start the driving device 1, and the driving device 1 drives the rotating shaft on the driving device 1 to rotate, thereby driving the moving knife 3 on the rotating shaft to rotate. The moving knife 3 and the fixed knife 4 are staggered. During the rotation of the moving knife 3, the material inside the box body 2 can be torn into pieces.

[0025] In this embodiment, four groups of square holes are provided in four groups of the box body 2, and fixed knives 4 are arranged inside the square holes. When a fixed knife 4 is to be repaired, only the fixed knife 4 needs to be disassembled, and the disassembly and assembly for repair is convenient. At the same time, saw teeth are provided on the four sides of the fixed knife 4. If the fixed knife 4 is worn, it can be rotated 90° and installed for continued use, thereby reducing the cost of use and maintenance.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel fixed blade device for a single-shaft crusher, comprising a driving device (1) and a housing (2), characterized in that: The driving device (1) is arranged on one side of the box body (2); the rotating shaft of the driving device (1) rotates inside the box body (2); a movable knife spacer (5) is sleeved on the rotating shaft of the driving device (1); a movable knife (3) is fixedly mounted on the movable knife spacer (5) by bolts; four groups of fixed knives (4) are fixedly mounted on the inner wall of the box body (2) in a circular array; the movable knives (3) and the fixed knives (4) are staggered; The box body (2) is provided with four groups of square holes in a circular array around its periphery, and the fixed knife (4) is fixedly installed in the square holes.

2. The novel fixed blade device of a single-shaft crusher according to claim 1 is characterized in that: A flange plate (6) is fixedly mounted on the upper end of the fixed knife (4); the flange plate (6) is arranged in a square shape and is fixed to the surface of the box body (2) by means of bolts.

3. The novel fixed blade device of a single-shaft crusher according to claim 1 is characterized in that: The fixed knife (4) is arranged in a square shape, and saw teeth are arranged on four sides of the fixed knife (4), so as to increase the friction force of the contact surface of the material during the shearing process.

4. The novel fixed blade device of a single-shaft crusher according to claim 1 is characterized in that: The fixed knife (4) can be rotated 90 degrees, and the fixed knife (4) matches with the square hole on the box body (2).

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