Crushing cutter for waste plastic recovery

Abstract

The utility model relates to the field of crushing knives, in particular to a crushing knife for waste plastic recovery, which comprises a cutting knife and a crushing knife, the cutting knife and the crushing knife are coaxially connected through a rotating roller, the edge of the cutting knife is encircled to form a cutting part and a slitting part, the outwards extending tail end of the slitting part is cut to form a cutting edge, and the cutting edge is provided with a cutting edge. Connecting holes are distributed in the surface of the cutting knife at intervals, positioning holes are formed in the surface of the crushing knife, protruding positioning protrusions are formed on the surface of the cutting knife, and positioning grooves are formed in the surface of the crushing knife. The cutting edges extending outwards through the slitting parts can form larger shearing force in the crushing process, so that waste plastics are better crushed, crushing is conveniently conducted through the cutting parts and the crushing cutters, the cutting efficiency of the crushing cutters is improved, the positioning protrusions and the positioning grooves are matched in an embedded mode, and the strength and stability of the connecting structure are improved.

Description

Technical Field

[0001] The utility model relates to the field of crushing knives, in particular to a crushing knife used for recycling waste plastics. Background Art

[0002] Today, as environmental protection and resource recycling are increasingly valued, the recycling and reuse of waste plastics has become a global research hotspot. In the process of recycling waste plastics, the crusher, as one of the key equipment, undertakes the important task of crushing waste plastics into smaller particles for subsequent processing.

[0003] Traditional crushing knives are usually made of high-strength alloy steel, and their structures are mostly fixed or adjustable. Fixed crushing knives are directly installed on the crusher's knife shaft through bolts and other fasteners. The materials are crushed as the knife shaft rotates, while adjustable crushing knives use an adjustment mechanism to change the spacing or angle of the blades to adapt to different materials and processing requirements.

[0004] However, the existing crushing knives still have some structural defects in the application of waste plastic recycling. Due to the complex composition of waste plastics, different hardness and toughness, traditional crushing knives are easily worn during the crushing process, resulting in reduced crushing efficiency and increased maintenance costs. Due to the structural limitations of the existing crushing knives, when crushing plastics of various shapes, thicker and harder plastics are easy to roll and difficult to press and cut the plastics, thereby affecting the shearing and crushing effect of the crushing knife on the plastic, resulting in poor crushing efficiency and effect. For adjustable crushing knives, when cutting plastics with higher hardness, the crushing knife is prone to shaking and loosening, thereby affecting the consistency and stability of the crushing effect. Utility Model Content

[0005] The purpose of the utility model is to solve the above defects and provide a crushing knife for recycling waste plastics, so as to solve the technical problems that the crushing knife in the above background technology is not easy to press and cut the plastic, and the adjustable crushing knife connection has poor stability, thereby affecting the plastic crushing effect.

[0006] The purpose of the utility model is achieved by the following methods:

[0007] The crushing knife for recycling waste plastics comprises a cutting knife and a crushing knife detachably mounted on both sides of the cutting knife, wherein the cutting knife and the crushing knife are coaxially connected via a rotating roller, a plurality of cutting parts and slitting parts are formed around the edge of the cutting knife, the cutting parts and the slitting parts are spaced apart along the edge of the cutting knife, one end of the slitting part extends outwardly in the radial direction of the cutting knife, and a cutting edge is formed by cutting at the end of the slitting part extending outwardly. A plurality of connecting holes are spaced apart on the surface of the cutting knife, a plurality of positioning holes coaxially connected to the connecting holes are provided on the surface of the crushing knife, a plurality of raised positioning protrusions are formed on the surface of the cutting knife, a plurality of positioning grooves matched with the positioning protrusions are provided on the surface of the crushing knife, and the positioning protrusions and the positioning grooves are fitted and matched with each other.

[0008] Further in the above description, the cutting parts are distributed in a circular array along the edge of the cutting knife, so that the cutting knife forms a gear shape, and a mounting hole coaxially connected to the rotating roller is opened in the middle of the cutting knife. The cutting parts distributed in a gear shape can enhance the cutting and crushing effect of the crushing knife, thereby improving the crushing and cutting quality and efficiency of the plastic.

[0009] Further in the above description, the cutting parts are distributed in a circular array along the edge of the cutting knife, and the end face of the cutting part extending toward the cutting blade is inclined. The arranged cutting parts can pre-compact the plastic and perform shearing and splitting, thereby facilitating the cutting and crushing of the crushing knife and the cutting part, and improving the crushing and cutting efficiency and stability of the plastic.

[0010] Further in the above description, a fixing hole coaxially connected to the rotating roller is provided in the middle of the crushing knife, a key slot is provided on the inner wall of the fixing hole, and a crushing part is formed around the edge of the crushing knife. The crushing part of the edge of the crushing knife can press and cut the plastic, and the cutting part can crush and cut the plastic.

[0011] Further in the above description, the connecting hole and the positioning hole are fixed in series in sequence through a connecting rod, and the connecting hole of the cutting knife and the positioning hole of the crushing knife are connected in series with the connecting rod, so that they can be further connected and fixed to prevent the cutting knife and the crushing knife from shaking and loosening, thereby improving the crushing and cutting stability of the crushing knife.

[0012] Further in the above description, the cutting knives and crushing knives are distributed along the rotating roller array.

[0013] The beneficial effects of the utility model are as follows: the several cutting parts and cutting parts formed around the edge of the cutting knife enhance the crushing ability of the cutting knife, and make the crushing process more uniform and efficient; the spaced distribution of the cutting parts and the cutting parts can ensure that when crushing waste plastics, there is sufficient cutting force and the increase in energy consumption caused by excessive cutting can be avoided; the cutting blade extending outward can form a greater shear force in the crushing process, thereby better crushing the waste plastics; thicker or harder plastics can be sheared and divided, thereby facilitating crushing by the cutting part and the crushing knife, and improving the cutting efficiency of the crushing knife; the positioning protrusion on the surface of the cutting knife and the positioning groove on the surface of the crushing knife fit together and match, which can ensure a stable connection between the cutting knife and the crushing knife, improve the strength and stability of the connection structure, and effectively prevent loosening or falling off due to vibration or impact during the crushing process, thereby improving the stability of the crushing knife and the crushing operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional diagram of this embodiment;

[0015] Figure 2 It is the front view of this embodiment;

[0016] Figure 3 This is a schematic diagram of the structure of the crushing knife in this embodiment;

[0017] Figure 4 Schematic diagram of the structure of the cutting knife in this embodiment;

[0018] The reference numerals in the figure are: 1-cutting knife, 2-crushing knife, 3-rotating roller, 4-cutting part, 5-slitting part, 6-cutting blade, 7-connecting hole, 8-positioning hole, 9-positioning protrusion, 10-positioning groove, 11-mounting hole, 12-fixing hole, 13-crushing part. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] In this embodiment, refer to Figure 1-Figure 4The crushing knife for recycling waste plastics specifically implemented comprises a cutting knife 1 and a crushing knife 2 detachably mounted on both sides of the cutting knife 1, the cutting knife 1 and the crushing knife 2 being coaxially connected via a rotating roller 3, a cutting portion 4 and a slitting portion 5 being formed around the edge of the cutting knife 1, the cutting portion 4 and the slitting portion 5 being spaced apart along the edge of the cutting knife 1, one end of the slitting portion 5 extending outwardly along the radial direction of the cutting knife 1, and a cutting edge 6 being formed by cutting at the end of the slitting portion 5 extending outwardly by cutting, connecting holes 7 being spaced apart on the surface of the cutting knife 1, a positioning hole 8 coaxially connected to the connecting hole 7 being provided on the surface of the crushing knife 2, a raised positioning protrusion 9 being formed on the surface of the cutting knife 1, a positioning groove 10 matching the positioning protrusion 9 being provided on the surface of the crushing knife 2, and the positioning protrusion 9 and the positioning groove 10 being fitted and matched with each other.

[0021] The cutting parts 4 are arranged in an array along the circumference of the edge of the cutting blade 1, so that the cutting blade 1 is gear-shaped. A mounting hole 11 coaxially connected to the rotating roller 3 is provided in the middle of the cutting blade 1. The gear-shaped cutting parts 4 can enhance the cutting and crushing effect of the crushing blade 2, and improve the crushing and cutting quality and efficiency of the plastic. The slitting parts 5 are arranged in an array along the circumference of the edge of the cutting blade 1, and the end surface of the slitting parts 5 extending toward the cutting blade 6 is formed with an inclination. The slitting parts 5 can be pre-pressed and sheared and split by the provided slitting parts, thereby facilitating the cutting and crushing of the crushing blade 2 and the cutting parts 4, and improving the crushing and cutting efficiency and stability of the plastic.

[0022] A fixing hole 12 coaxially connected to the rotating roller 3 is provided in the middle of the crushing knife 2, and a keyway is provided on the inner wall of the fixing hole 12. A crushing part 13 is formed around the edge of the crushing knife 2. The crushing part 13 on the edge of the crushing knife 2 can press and cut the plastic, and the plastic can be crushed and cut through the cutting part 4. The connecting hole 7 and the positioning hole 8 are fixed in series in sequence through the connecting rod 14. The connecting hole 7 of the cutting knife 1 and the positioning hole 8 of the crushing knife 2 are connected in series by the connecting rod 14, so that they can be further connected and fixed, preventing the cutting knife 1 and the crushing knife 2 from shaking and loosening, and improving the crushing and cutting stability of the crushing knife. The cutting knife 1 and the crushing knife 2 are distributed in an array along the rotating roller 3.

[0023] The specific installation and use in this embodiment is as follows: the positioning protrusions 9 on the surface of the cutting knife 1 are matched with the positioning grooves 10 on the surface of the crushing knife 2 to ensure the stable connection between the cutting knife 1 and the crushing knife 2, and the connecting rod 14 is used to pass through the positioning holes 8 of the crushing knife 2 and the connecting holes 7 of the cutting knife 1 in sequence, so that the two sides of the cutting knife 1 are connected to the crushing knife 2 to form a knife disc, which improves the strength and stability of the connection structure. During the crushing process, it can effectively prevent loosening or falling off due to vibration or impact, improve the stability of the crushing knife and the crushing operation efficiency, and the edge of the cutting knife 1 surrounds the shape of the crushing knife 2. The cutting part 4 and the slitting part 5 are formed to enhance the crushing ability of the cutting knife 1 and make the crushing process more uniform and efficient. The spacing distribution of the cutting part 4 and the slitting part 5 can ensure that when crushing waste plastics, there is sufficient cutting force and the increase in energy consumption caused by excessive cutting can be avoided. The cutting blade 6 extending outward can form a greater shear force in the crushing process, and the waste plastics can be better crushed. For thicker or harder plastics, the plastics can be sheared and divided under the drive of the rotating roller 3, so that it is convenient to crush them through the cutting part 4 and the crushing knife 2, thereby improving the cutting efficiency of the crushing knife.

[0024] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A crushing knife for recycling waste plastics, comprising a cutting knife and a crushing knife detachably mounted on both sides of the cutting knife, wherein the cutting knife and the crushing knife are coaxially connected through a rotating roller, and characterized in that: A plurality of cutting parts and slitting parts are formed around the edge of the cutting knife, and the cutting parts and slitting parts are spaced apart along the edge of the cutting knife. One end of the slitting part extends outwardly in the radial direction of the cutting knife, and a cutting edge is formed by cutting at the end of the slitting part extending outwardly. A plurality of connecting holes are spaced apart on the surface of the cutting knife, a plurality of positioning holes coaxially connected to the connecting holes are formed on the surface of the crushing knife, a plurality of raised positioning protrusions are formed on the surface of the cutting knife, a plurality of positioning grooves matching the positioning protrusions are formed on the surface of the crushing knife, and the positioning protrusions and the positioning grooves are fitted and matched with each other.

2. The crushing knife for recycling waste plastics according to claim 1, characterized in that: The cutting parts are distributed in an array along the circumference of the edge of the cutting knife, so that the cutting knife is formed into a gear shape. A mounting hole coaxially connected with the rotating roller is opened in the middle of the cutting knife.

3. The crushing knife for recycling waste plastics according to claim 1, characterized in that: The cutting parts are distributed in an array along the circumference of the edge of the cutting knife, and the end faces of the cutting parts extending toward the cutting edge are inclined.

4. The crushing knife for recycling waste plastics according to claim 1, characterized in that: A fixing hole coaxially connected with the rotating roller is provided in the middle of the crushing knife, a key groove is provided on the inner wall of the fixing hole, and a crushing part is formed around the edge of the crushing knife.

5. The crushing knife for recycling waste plastics according to any one of claims 1 to 4, characterized in that: The connecting hole and the positioning hole are fixed in series through a connecting rod.

6. The crushing knife for recycling waste plastics according to any one of claims 1 to 4, characterized in that: The cutting knives and crushing knives are distributed along the rotating roller array.

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