Pulverizer blade with double-layer cutting edge structure

Abstract

The crusher blade with the double-layer cutting edge structure comprises a cutter head, a cutter shaft and a key groove, the cutter shaft is located at the middle end of the cutter head, the key groove is formed in the cutter shaft, and the crusher blade is characterized in that installation grooves are annularly distributed in the outer surface of the cutter head, a cutter holder is movably installed in the installation grooves, and a first blade and a second blade are arranged in the cutter holder respectively; the second blade is located at the upper end of the first blade, a sliding groove is formed in the tool apron and is in sliding fit with the first blade and the second blade, guide grooves are formed in the upper end and the lower end of the tool apron correspondingly, and mounting holes are formed in the cutter head, the sliding groove, the guide grooves, the first blade and the second blade correspondingly. According to the crusher blade with the double-layer cutting edge structure, a whole cutter head assembly needs to be replaced when a traditional crusher blade is replaced, the maintenance cost is remarkably reduced through independent replacement of the double-layer cutting edge structure and the blade, when part of cutter heads are abraded or damaged, only the damaged blade needs to be replaced, and unnecessary resource waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of crusher blade technology, specifically a crusher blade with a double-layer cutting edge structure. Background Technology

[0002] Existing shredder blades are usually fixedly connected to the cutter disc. While this design improves shredding efficiency, it also brings some problems. Specifically, when some blades wear out or become damaged due to prolonged use, the entire cutter disc assembly needs to be replaced because the blades are fixedly connected to the cutter disc. This replacement process is time-consuming and labor-intensive, and most of the blades remain intact. Replacing the entire cutter disc assembly also results in the discarding of intact blades. Utility Model Content

[0003] The purpose of this invention is to provide a crusher blade with a double-layer cutting edge structure to solve the problem mentioned in the background art of existing blades requiring assembly replacement due to damage, resulting in resource waste.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a crusher blade with a double-layer cutting edge structure, comprising a blade disc, a blade shaft, and a keyway. The blade shaft is located at the middle of the blade disc, and the keyway is located inside the blade shaft. The blade disc has annularly distributed mounting grooves on its outer surface. A blade holder is movably mounted inside the mounting grooves. A first blade and a second blade are respectively disposed inside the blade holder, with the second blade located above the first blade. A sliding groove is provided inside the blade holder, which slides in cooperation with the first and second blades. Guide grooves are provided at the upper and lower ends of the blade holder. Mounting holes are provided inside the blade disc, sliding groove, guide groove, first blade, and second blade. Fixing holes are provided inside the blade disc and blade holder. Fastening bolts are threaded into the mounting holes and fixing holes.

[0005] As a preferred technical solution of this utility model, one end of the tool holder is C-shaped and movably connected to the outer surface of the tool disc.

[0006] As a preferred technical solution of this utility model, a positioning block is provided on the outer surface of one end of the tool holder, and the positioning block is movably connected to the positioning grooves distributed inside the tool disc.

[0007] As a preferred technical solution of this utility model, the upper end of the second blade is provided with an inclined wing block, which is slidably connected to the guide groove.

[0008] As a preferred technical solution of this utility model, there is an angle between the oblique wing block and one side of the second blade, and the angle is between 120° and 150°.

[0009] Compared with the prior art, the advantages of the crusher blade with double-layer cutting edge structure of this utility model are:

[0010] Traditional crusher blade replacement requires replacing the entire blade assembly. However, this invention significantly reduces maintenance costs through a double-layer blade structure and independent blade replacement. When some blades are worn or damaged, only the damaged blades need to be replaced, avoiding unnecessary waste of resources. Since the blades can be replaced independently, maintenance personnel can complete the replacement in a short time, reducing crusher downtime and improving production efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of the cutter head and cutter holder of this utility model;

[0012] Figure 2 This is a schematic diagram of the installation structure of the cutter head and cutter holder of this utility model;

[0013] Figure 3 This is a schematic diagram of the assembly structure of the cutter head and cutter holder of this utility model;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the cutter head of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the tool holder of this utility model.

[0016] In the diagram: 1. Cutter head; 2. Cutter holder; 3. First cutter; 4. Second cutter; 5. Slide groove; 6. Guide groove; 7. Mounting hole; 8. Fixing hole; 9. Fastening bolt; 10. Cutter shaft; 11. Keyway; 12. Positioning block; 13. Positioning groove; 14. Mounting groove; 15. Slanted wing block. Detailed Implementation

[0017] Please see Figure 1-5 This utility model provides a technical solution: a crusher blade with a double-layer cutting edge structure, including a blade disc 1, a blade shaft 10, and a keyway 11. The blade shaft 10 is located at the middle of the blade disc 1, and the keyway 11 is located inside the blade shaft 10. The outer surface of the blade disc 1 has a ring of mounting grooves 14. A blade holder 2 is movably mounted inside the mounting grooves 14. A first blade 3 and a second blade 4 are respectively arranged inside the blade holder 2, and the second blade 4 is located above the first blade 3. A sliding groove 5 is opened inside the blade holder 2, and the sliding groove 5 slides with the first blade 3 and the second blade 4. Guide grooves 6 are respectively provided at the upper and lower ends of the blade holder 2. Mounting holes 7 are respectively opened inside the blade disc 1, the sliding groove 5, the guide groove 6, the first blade 3, and the second blade 4. Fixing holes 8 are respectively opened inside the blade disc 1 and the blade holder 2. Fastening bolts 9 are threadedly connected inside the mounting holes 7 and the fixing holes 8.

[0018] One end of the tool holder 2 is C-shaped and movably connected to the outer surface of the tool disc 1. The inner wall of one end of the tool holder 2 slides into the designated position along the mounting groove 14 and covers the mounting groove 14. The tool holder 2 can be fixed to the outer surface of the tool disc 1 by using the fastening bolt 9 and the fixing hole 8 threaded connection. The tool disc 1 is a detachable part, which makes it easy to take out the double-layer blade in a wide external space and avoid the replacement operation in a narrow space.

[0019] A positioning block 12 is provided on the outer surface of one end of the tool holder 2. The positioning block 12 is movably inserted into the positioning groove 13 distributed inside the tool disc 1. The positioning block 12 is inserted into the positioning groove 13, which can position the connection between the tool holder 2 and the tool disc 1 on the one hand, and increase the axial force points of the tool holder 2 on the other hand. The connection end between the tool holder 2 and the mounting groove 14 also has a cross-section embedded structure, which further increases the overall stability of the tool holder 2.

[0020] The upper end of the second blade 4 is provided with a slanted wing block 15, which is slidably connected to the guide groove 6. The slanted wing block 15 can play a positioning role in the installation of the blade.

[0021] The inclined blade 15 and the side of one end of the second blade 4 are at an angle between 120° and 150°. The inclined blade 15 generates an upward airflow during rotation. The upward airflow generated by the inclined blade 15 during rotation lifts the debris, thus avoiding insufficient wind power from the fan to collect the debris at the bottom.

[0022] Working principle: First, multiple tool holders 2 are inserted into the mounting groove 14 in sequence, with the tool holders 2 corresponding to the fixing holes 8 of the mounting groove 14, and fixed with fastening bolts 9. Then, the first blade 3 and the second blade 4 are inserted into the sliding groove 5 of the tool holder 2, with the second blade 4 located at the upper end. The mounting holes 7 of the two blades are vertically aligned with the mounting holes 7 of the tool holder 2 and the cutter head 1, and fixed with fastening bolts 9 and nuts. When one of the blades is damaged, the tool holder 2 and the cutter head 1 are disassembled and replaced using the above method, or the blade is removed and pulled out separately, thereby realizing the disassembly and assembly of the double-layer blade.

Claims

1. A pulverizer blade with a double-layer cutting edge structure, comprising a cutter disc (1), a cutter shaft (10), and a keyway (11), wherein the cutter shaft (10) is located at the middle end of the cutter disc (1), and the keyway (11) is disposed inside the cutter shaft (10), characterized in that: The outer surface of the cutter head (1) is provided with mounting grooves (14) arranged in a ring. The tool holder (2) is movably installed inside the mounting grooves (14). The tool holder (2) is provided with a first blade (3) and a second blade (4) respectively. The second blade (4) is located at the upper end of the first blade (3). The tool holder (2) is provided with a sliding groove (5). The sliding groove (5) is in sliding fit with the first blade (3) and the second blade (4). The upper and lower ends of the tool holder (2) are provided with guide grooves (6). The cutter head (1), the sliding groove (5), the guide groove (6), the first blade (3) and the second blade (4) are provided with mounting holes (7). The cutter head (1) and the tool holder (2) are provided with fixing holes (8). The mounting holes (7) and the fixing holes (8) are threadedly connected with fastening bolts (9).

2. A shredder blade with a double-layer cutting edge structure according to claim 1, characterized in that: The tool holder (2) is C-shaped at one end and is movably connected to the outer surface of the tool disc (1).

3. A shredder blade with a double-layer cutting edge structure according to claim 1, characterized in that: A positioning block (12) is provided on the outer surface of one end of the tool holder (2), and the positioning block (12) is movably connected to the positioning groove (13) distributed inside the tool disc (1).

4. A shredder blade with a double-layer cutting edge structure according to claim 1, characterized in that: The upper end of the second blade (4) is provided with a slanted wing block (15), which is slidably connected to the guide groove (6).

5. A shredder blade with a double-layer cutting edge structure according to claim 1, characterized in that: There is an angle between the oblique wing block (15) and one side of the second blade (4), and the angle is between 120° and 150°.

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