Extrusion screw with strong high temperature resistance

Abstract

The utility model discloses an extrusion screw with strong high temperature resistance, which comprises a mandrel, the surface of the mandrel is fixedly connected with a plurality of tooth blocks, one side of the mandrel is fixedly connected with a screw head, the two sides of one end of the mandrel far away from the screw head are provided with mounting grooves, the middle position of the two mounting grooves is provided with a mounting hole, and the screw head is fixedly connected with the mounting hole. The screw section is made of a tungsten-based alloy, the screw section is made of a wear-resistant steel, the end, close to the screw head, of the core shaft is provided with an extrusion screw section, and the middle position of the core shaft is provided with a stirring screw section, the wear-resistant steel core shaft and the screw section made of the tungsten-based alloy have the beneficial effects that through the structural design of the wear-resistant steel core shaft and the screw section, when materials are sheared and extruded at the edge of the screw section to cause temperature rise, the materials can be stirred; the tungsten-based alloy can effectively bear the temperature and reduce abrasion, due to the structural design of the abrasion-resistant steel core shaft, the cost is reduced, meanwhile, the abrasion resistance is guaranteed, when the type of the extruder is changed, the screw section can be replaced according to the type of the extruder, and production and use are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rods, in particular to an extrusion screw rod with strong high temperature resistance. Background Art

[0002] The existing patent document with application number 202222547480.6 provides an extrusion screw with strong high temperature resistance, including a core shaft, wherein the shaft body of the core shaft is respectively provided with a first screw segment, a second screw segment and a third screw segment, the outer walls of the shaft bodies of the first screw segment, the second screw segment and the third screw segment are fixedly connected with a plurality of screw fins, the outer wall of the shaft body of the second screw segment is fixedly connected with a plurality of stirring blocks, the outer wall of the shaft body of the core shaft is fixedly connected with a first reinforcement layer, the outer wall of the first reinforcement layer is fixedly connected with a plurality of mating teeth, and the first screw segment is fixedly connected with a plurality of mating teeth. The inner walls of the rod segment, the second screw segment and the third screw segment are all provided with a plurality of matching grooves. Although the above patent has many beneficial effects, it still has the following shortcomings: in the process of the extrusion screw transporting, stirring and extruding the material, the material needs to be sheared and extruded at the edge of the spiral coil, which will cause the temperature of the spiral coil area to rise, while the temperature at the core shaft is lower, and the core shaft accounts for a large proportion of the screw. Therefore, the core shaft is made of expensive tungsten-based alloy steel, which is not conducive to production and use. In addition, the extrusion screw model is relatively stable and cannot be adjusted according to the model of the extruder, and its practicality is low. Utility Model Content

[0003] The utility model aims to provide an extrusion screw with strong high temperature resistance to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion screw with strong high temperature resistance, comprising a core shaft, a plurality of tooth blocks fixedly connected to the surface of the core shaft, a screw head fixedly connected to one side of the core shaft, an installation groove is provided at the end of the core shaft away from the screw head, and an installation hole is provided at the middle position of the two installation grooves, an extrusion screw section is provided at the end of the core shaft close to the screw head, a stirring screw section is provided at the middle position of the core shaft, and a conveying screw section is provided on the side of the core shaft close to the mounting groove, and the extrusion screw section, the stirring screw section and the conveying screw section are all fixedly connected with a reinforcement layer, the reinforcement layer is fixedly connected with a mounting layer, and the mounting layer is provided with tooth grooves.

[0005] Preferably, the extrusion screw segment, the stirring screw segment and the conveying screw segment are all made of tungsten-based alloy materials, and the reinforcement layer is made of tungsten-based alloy materials.

[0006] Preferably, the mounting layer, the tooth block and the core shaft are all made of high-speed alloy steel material.

[0007] Preferably, the stirring screw segment is designed as a discontinuous structure, and the spiral coils of the extrusion screw segment are designed as a compact structure.

[0008] Preferably, the mounting layer is arranged corresponding to the core shaft, and the tooth groove is arranged corresponding to the tooth block.

[0009] Compared with the prior art, the utility model has the following beneficial effects: through the structural design of the wear-resistant steel mandrel and the tungsten-based alloy screw segment, when the material is sheared and extruded at the edge of the screw segment causing the temperature to rise, the tungsten-based alloy can effectively withstand the temperature and reduce wear. The structural design of the wear-resistant steel mandrel ensures wear resistance while reducing costs, and when the extruder model changes, the screw segment can be replaced according to the model of the extruder, which is convenient for production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the structural front view of the utility model;

[0011] Figure 2 This is a disassembled left view of the structure of the utility model;

[0012] Figure 3 It is a right side view of the disassembled structure of the utility model.

[0013] In the figure: 1. core shaft; 2. tooth block; 3. screw head; 4. mounting groove; 5. mounting hole; 6. extrusion screw section; 7. stirring screw section; 8. conveying screw section; 9. reinforcement layer; 10. mounting layer; 11. tooth groove. DETAILED DESCRIPTION

[0014] 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.

[0015] See also Figure 1-3 The utility model provides a technical solution: an extrusion screw with strong high temperature resistance, including a core shaft 1, a plurality of tooth blocks 2 are fixedly connected to the surface of the core shaft 1, a screw head 3 is fixedly connected to one side of the core shaft 1, a mounting groove 4 is provided at the end of the core shaft 1 away from the screw head 3, a mounting hole 5 is provided at the middle position of the two mounting grooves 4, an extrusion screw segment 6 is provided at the end of the core shaft 1 close to the screw head 3, a stirring screw segment 7 is provided at the middle position of the core shaft 1, a conveying screw segment 8 is provided on the side of the core shaft 1 close to the mounting groove 4, and a reinforcing layer 9 is fixedly connected to the inside of the extrusion screw segment 6, the stirring screw segment 7 and the conveying screw segment 8, a mounting layer 10 is fixedly connected to the inside of the reinforcing layer 9, and a tooth groove 11 is provided inside the mounting layer 10.

[0016] The extrusion screw segment 6, the stirring screw segment 7 and the conveying screw segment 8 are all made of tungsten-based alloy materials, and the reinforcement layer 9 is made of tungsten-based alloy materials. The tungsten-based alloy has the characteristics of high density, high temperature resistance and corrosion resistance, and can effectively protect the worm segment and the reinforcement layer 9. The mounting layer 10, the tooth block 2 and the core shaft 1 are all made of wear-resistant steel materials, which is convenient for the core shaft to drive the screw segment and reduce wear. The stirring screw segment 7 is designed as an intermittent structure, and the spiral coil of the extrusion screw segment 6 is designed as a tight structure, which is convenient for the stirring screw segment 7 to stir the material and make the material more uniform. At the same time, the spiral coil spacing of the extrusion screw segment 6 is tighter, which is convenient for extruding the material. The mounting layer 10 is arranged corresponding to the core shaft 1, and the tooth groove 11 is arranged corresponding to the tooth block 2, which is convenient for the combination and installation of the core shaft 1 and the screw segment.

[0017] Specifically, when using the utility model, the core shaft 1 is made of wear-resistant steel, which ensures wear resistance while reducing costs. The extrusion screw segment 6, the stirring screw segment 7 and the conveying screw segment 8 are sequentially mounted on the core shaft 1. The tungsten-based alloy has the characteristics of high density, high temperature resistance and corrosion resistance. When the material is sheared and extruded at the edge of the spiral coil, resulting in an increase in temperature, the tungsten-based alloy can effectively withstand the temperature and reduce wear. At the same time, the material is transported to the stirring screw segment 7 through the conveying screw segment 8. The stirring screw segment 7 with an intermittent structure design can efficiently and evenly stir the material. The evenly stirred material is transported to the extrusion screw segment 6. The extrusion screw segment 6 with a tight spiral coil can effectively extrude the material. When the model of the extruder changes, the screw segment can be replaced according to the model of the extruder.

[0018] 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. An extrusion screw with strong high temperature resistance, characterized in that: The invention comprises a core shaft (1), a plurality of tooth blocks (2) are fixedly connected to the surface of the core shaft (1), a screw head (3) is fixedly connected to one side of the core shaft (1), a mounting groove (4) is provided at one end of the core shaft (1) away from the screw head (3), a mounting hole (5) is provided at the middle position of the two mounting grooves (4), an extrusion screw segment (6) is provided at the end of the core shaft (1) close to the screw head (3), a stirring screw segment (7) is provided at the middle position of the core shaft (1), a conveying screw segment (8) is provided at one side of the core shaft (1) close to the mounting groove (4), the extrusion screw segment (6), the stirring screw segment (7) and the conveying screw segment (8) are all fixedly connected to the inside of the reinforcing layer (9), a mounting layer (10) is fixedly connected to the inside of the reinforcing layer (9), and a tooth groove (11) is provided inside the mounting layer (10).

2. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The extrusion screw segment (6), the stirring screw segment (7) and the conveying screw segment (8) are all made of tungsten-based alloy material, and the reinforcement layer (9) is made of tungsten-based alloy material.

3. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The mounting layer (10), the tooth block (2) and the core shaft (1) are all made of wear-resistant steel material.

4. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The stirring screw segment (7) is designed as a discontinuous structure, and the spiral coils of the extrusion screw segment (6) are designed as a compact structure.

5. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The mounting layer (10) is arranged corresponding to the core shaft (1), and the tooth groove (11) is arranged corresponding to the tooth block (2).

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