Extrusion screw with strong high temperature resistance

Abstract

The invention discloses an extrusion screw with strong high temperature resistance, which comprises a head end, a screw main body and a tail end, the head end is arranged at the front end of the screw main body, the tail end is screwed at the rear end of the screw main body, the tail end comprises a tail end connecting section I and a tail end connecting section II, the tail end connecting section I is screwed at the rear end of the screw main body, and the tail end connecting section II is screwed at the rear end of the screw main body. The tail end connecting section II is screwed at the rear end of the tail end connecting section I; the extrusion screw adopted by the invention adopts an assembled tail end structure, so that the replacement and maintenance are convenient, and the use flexibility is improved. And the extrusion screw is provided with the high-temperature-resistant structural layer, so that the high-temperature-resistant performance is high, and the overall use efficiency is improved.

Description

Technical Field

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

[0002] Extrusion screws currently on the market use a single tail structure, which is inconvenient to replace and maintain, and are prone to tail damage after long-term use, and are relatively inflexible to use. Extrusion screws are often used because of the large difference in material. Extrusion screws with strong high-temperature resistance can increase their service life, but the existing extrusion screws lack high-temperature resistance and have unreasonable structures, so their high-temperature resistance is poor. Summary of the invention

[0003] The purpose of the present invention is to provide an extrusion screw with strong high temperature resistance to solve the problems raised in the above background technology.

[0004] The present invention provides the following technical solution: an extrusion screw with strong high temperature resistance, comprising a head end, a screw body and a tail end, characterized in that: the head end is arranged at the front end of the screw body, the tail end is screwed on the rear end of the screw body, the tail end comprises a tail end connecting section 1 and a tail end connecting section 2, the tail end connecting section 1 is screwed on the rear end of the screw body, and the tail end connecting section 2 is screwed on the rear end of the tail end connecting section 1; The head end, the screw body and the tail end all include a high temperature resistant structural layer, and the high temperature resistant structural layer includes a matrix, an anti-oxidation layer and an anti-corrosion layer.

[0005] Preferably, the matrix comprises an iron-based high-temperature alloy, a nickel-based high-temperature alloy, or a cobalt-based high-temperature alloy.

[0006] Preferably, the tail end connecting section 1 is provided with convex strips along the outer wall, and the length of the convex strips is half the length of the tail end connecting section 1.

[0007] Preferably, a stud is provided at one end of the tail end connecting section 1, and an inner screw tube for screwing the stud is provided at the rear end of the screw body.

[0008] Preferably, the length of the tail end connecting section 2 is shorter than that of the tail end connecting section 1, and short convex strips are arranged along the periphery of the tail end connecting section 2.

[0009] Preferably, a connecting stud is provided at one end of the tail end connecting section 2, and a connecting inner screw tube for screwing the connecting stud is provided at the rear end of the tail end connecting section 1.

[0010] Preferably, the anti-corrosion layer is zinc plating, nickel plating, or chrome plating.

[0011] Preferably, the anti-oxidation layer includes a crystal diamond coating layer.

[0012] The beneficial effects of the present invention are as follows: the extrusion screw used in the present application uses an assembled tail end structure, which is convenient for replacement and maintenance, and improves the flexibility of use. In addition, the high temperature resistant structural layer of the extrusion screw of the present application has strong high temperature resistance performance, which improves the overall use and installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the screw rod of the present invention; Figure 3 This is a structural schematic diagram of a tail end connecting section of the present invention; Figure 4 This is a structural schematic diagram of the second tail end connecting section of the present invention; Figure 5 This is a schematic diagram of the high temperature resistant structural layer structure of the present invention; In the figure: head end 1, screw body 11, tail end 12, tail end connecting section 1 2, convex strip 21, stud 22, inner screw tube 23, tail end connecting section 2 3, short convex strip 31, connecting stud 32, base 41, anti-corrosion layer 42, anti-oxidation layer 43. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0015] See also Figures 1 to 5 As shown, the technical solution provided by the present invention is: an extrusion screw with strong high temperature resistance, including a head end 1, a screw body 11 and a tail end 12, which is the structure of an existing extrusion screw.

[0016] Extrusion screws currently on the market use a single tail structure, which is inconvenient to replace and maintain, and are prone to tail damage after long-term use, and are relatively inflexible to use. Extrusion screws are often used because of the large difference in material. Extrusion screws with strong high-temperature resistance can increase their service life, but existing extrusion screws lack high-temperature resistance structures, so their high-temperature resistance is poor.

[0017] The innovation of the present application is that: the head end 1 is arranged at the front end of the screw body 11, the tail end 12 is screwed on the rear end of the screw body 11, the tail end 12 includes a tail end connecting section 1 2 and a tail end connecting section 2 3, the tail end connecting section 1 2 is screwed on the rear end of the screw body 11, and the tail end connecting section 2 3 is screwed on the rear end of the tail end connecting section 1 2; the tail end connecting section 1 2 is arranged with convex strips 21 along the outer wall, and the length of the convex strips 21 is half the length of the tail end connecting section 1 2. A stud 22 is arranged at one end of the tail end connecting section 1 2, and an inner screw tube 23 for screwing the stud 22 is arranged at the rear end of the screw body 11. The length of the tail end connecting section 2 3 is shorter than that of the tail end connecting section 1 2, and short convex strips 31 are arranged along the outer periphery of the tail end connecting section 2 3. A connecting stud 32 is arranged at one end of the tail end connecting section 2 3, and a connecting inner screw tube 23 for screwing the connecting stud 32 is arranged at the rear end of the tail end connecting section 1 2. It is convenient to screw and form the tail end.

[0018] The high temperature resistance of the present invention is due to the high temperature resistant structural layer in the present embodiment. The head end 1, the screw body 11 and the tail end 12 all include a high temperature resistant structural layer. Figure 5 In the figure, it is represented from bottom to top. The high temperature resistant structural layer includes a substrate 41, an anti-oxidation layer 43 and an anti-corrosion layer 42. The substrate 41 includes an iron-based high temperature alloy, a nickel-based high temperature alloy, or a cobalt-based high temperature alloy. It can be used according to actual needs. The anti-corrosion layer 42 is zinc-plated, nickel-plated, or chromium-plated. It plays an anti-corrosion role. The anti-oxidation layer 43 includes a crystal diamond coating layer. The crystal diamond coating layer has an anti-oxidation function on the outermost surface. The overall structure is resistant to high temperatures.

[0019] Working principle: The installation structure of the present application is a tail end screw-mounted combination, in which tail end connecting section one is screwed onto the tail end of the screw body, and then tail end connecting section two is screwed onto the tail end of tail end connecting section one to form an assembly structure, which is simple and convenient to install.

[0020] Furthermore, in order to increase the high temperature resistance of the screw head, the outer walls of the screw body, head and tail are covered with a high temperature resistant structural layer, which is respectively covered with an anti-oxidation layer and an anti-corrosion layer, so that the high temperature resistance of the overall structure is improved and the service life is increased.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion screw with strong high temperature resistance, comprising a head end, a screw body and a tail end, characterized in that: The head end is arranged at the front end of the screw body, and the tail end is screwed on the rear end of the screw body. The tail end includes tail end connecting section one and tail end connecting section two. Tail end connecting section one is screwed on the rear end of the screw body, and tail end connecting section two is screwed on the rear end of tail end connecting section one. The head end, the screw body and the tail end all include a high temperature resistant structural layer, and the high temperature resistant structural layer includes a matrix, an anti-oxidation layer and an anti-corrosion layer.

2. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The matrix includes an iron-based high-temperature alloy, a nickel-based high-temperature alloy, or a cobalt-based high-temperature alloy.

3. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The tail end connecting section 1 is provided with convex strips along the outer wall, and the length of the convex strips is half the length of the tail end connecting section 1.

4. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: A stud is arranged at one end of the tail end connecting section 1, and an inner screw tube for screwing the stud is arranged at the rear end of the screw body.

5. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The length of the tail end connecting section 2 is shorter than that of the tail end connecting section 1, and short convex strips are arranged along the outer periphery of the tail end connecting section 2.

6. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: One end of the tail end connecting section 2 is provided with a connecting stud, and the rear end of the tail end connecting section 1 is provided with a connecting inner screw tube for screwing the connecting stud.

7. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The anti-corrosion layer is zinc plating, nickel plating, or chrome plating.

8. The extrusion screw with strong high temperature resistance according to claim 1, characterized in that: The anti-oxidation layer includes a crystal diamond coating layer.

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