Large-pitch low-shear high-conveying special screw

Abstract

The utility model discloses a large-pitch low-shear high-conveying special screw, which comprises a main body section and a tail end, large-pitch screw flights are arranged along the periphery of the main body section, a connecting section is arranged at the rear end of the main body section, and raised grains are uniformly arranged along the periphery of the connecting section; the large-pitch low-shear screw rod passes through the tail end which is inconvenient to replace and maintain and particularly easy to damage, the large-pitch low-shear screw rod is firm in structure, and the corrosion resistance and the durability structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, and particularly relates to a special screw with a large pitch, low shear and high conveying capacity. Background Art

[0002] In the existing market, screws with an outer diameter of 15 - 250 are large-pitch and low-shear screws. However, the structure of this screw is fixed, and it is not convenient to replace and maintain the tail end which is particularly prone to damage. Moreover, the large-pitch and low-shear screw lacks a firm structure, and its corrosion resistance and durability need to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special screw with a large pitch, low shear and high conveying capacity to solve the problems raised in the above background art.

[0004] The utility model provides the following technical solution: A special screw with a large pitch, low shear and high conveying capacity, including a main body section and a tail end, characterized in that: large-pitch screw ribs are arranged along the outer periphery of the main body section, a connecting section is arranged at the rear end of the main body section, convex stripes are uniformly arranged along the outer periphery of the connecting section, the tail end is screwed and fixed with the connecting section, the tail section includes a mating connecting section screwed to the connecting section and a connecting rod body arranged at the rear end of the mating connecting section, a screwing thread is arranged outside the mating connecting section, and a screwed internal thread matched with the screwing thread is arranged inside the connecting section.

[0005] Preferably, the main body section and the tail end are made of stainless steel, and an anti-rust coating and a decorative layer are sequentially covered outside the stainless steel.

[0006] Preferably, the stainless steel is 304 stainless steel or 316 stainless steel.

[0007] Preferably, the anti-rust coating is galvanized, or nickel-plated, or chromium-plated.

[0008] Preferably, the decorative layer is a baking varnish layer.

[0009] Preferably, the connecting rod body is provided with a notch.

[0010] The beneficial effect of the utility model is: The large-pitch and low-shear screw of this application has a tail end that is not convenient to replace and maintain and is particularly prone to damage, and the large-pitch and low-shear screw has a firm structure, and its corrosion resistance and durability are improved. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the utility model;

[0012] Figure 2 It is a schematic structural diagram of the main body section of the utility model;

[0013] Figure 3 It is a schematic structural diagram of the tail section of the utility model;

[0014] Figure 4 Schematic diagram of the multi-layer structure of the present utility model;

[0015] In the figure: main body section 1, large pitch screw rib 11, connecting section 12, convex pattern 13, tail section 2, mating connecting section 21, connecting rod body 3, notch 31, stainless steel 4, anti-rust coating 5, decorative layer 6. Specific implementation manners

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0017] Please refer to Figures 1 to 4 As shown, the technical solution provided by the present utility model: a special screw with large pitch, low shear and high conveying, including a main body section 1 and a tail end 2. In this embodiment, it is a screwed structure.

[0018] Aiming at the problems of the existing large pitch and low shear screws in the market with an outer diameter of 15 - 250, the structure of this screw is fixed, it is not convenient to replace and maintain the particularly vulnerable tail end, and the large pitch and low shear screw lacks a firm structure, and the corrosion resistance and durability structure need to be improved. Different from the screws in the existing market, this application not only has a large pitch structure, but also adopts an assembled structure for the connected tail end, which is convenient for maintenance and replacement. The assembled structure is reasonably installed and is also convenient for disassembly and assembly. The main body section 1 is provided with large pitch screw ribs 11 along its outer circumference, a connecting section 12 is arranged at the rear end of the main body section 1, convex patterns 13 are uniformly arranged along the outer circumference of the connecting section 12, the tail end 2 is screwed and fixed with the connecting section 12, the tail section 2 includes a mating connecting section 21 screwed to the connecting section 12 and a connecting rod body 3 arranged at the rear end of the mating connecting section 21, and the connecting rod body 3 is provided with a notch 31. The mating connecting section 21 is provided with screwing threads on the outside, and the connecting section 12 is provided with internal screwing threads mating with the screwing threads inside, which is convenient for assembling and replacing the tail end and is convenient for installation on an injection molding machine according to the use requirements.

[0019] What makes this application different from the screws on the existing market is that the structure of this application is firm and has the characteristics of being rust-proof, corrosion-proof and durable. In particular, in order to increase the aesthetics of the screw, a decorative layer 6 is added to match the appearance colors of different injection molding machines, making it more harmonious. The main body section 1 and the tail end 2 are made of stainless steel, and an anti-rust coating 5 and a decorative layer 6 are successively covered outside the stainless steel 4. The stainless steel 4 is 304 stainless steel or 316 stainless steel. The anti-rust coating 5 is galvanized, nickel-plated or chrome-plated. The decorative layer 6 is a paint baking layer. For example, a milky white paint baking layer.

[0020] Working principle: The installation structure of this application is a screw assembly. Since a connecting section is provided at the rear end of the main body section, screw-in internal threads are arranged inside the connecting section, and screw threads arranged on the mating connecting section provided at the tail end are screw-fitted to form an assembly structure that facilitates the replacement of the tail end.

[0021] As Figure 4 shown, the coating on the outside of the screw is increased in this application, enhancing the firmness, corrosion resistance and aesthetics of the overall structure, making the screw more durable.

[0022] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special screw for large pitch, low shear and high conveying, comprising a main body section and a tail end, characterized in that: The main body section is provided with large-pitch thread ridges along its outer periphery. A connection section is provided at the rear end of the main body section. Raised lines are evenly arranged along the outer periphery of the connection section. The tail end is screwed and fixed to the connection section. The tail section includes a mating connection section screwed to the connection section and a connecting rod body provided at the rear end of the mating connection section. The mating connection section is externally provided with screwing threads, and the connection section is internally provided with screwed internal threads that are fitted with the screwing threads.

2. The special screw for large pitch, low shear and high conveying according to claim 1, wherein: The main body section and the tail end are made of stainless steel, and an anti-rust coating and a decorative layer are sequentially covered outside the stainless steel.

3. The special screw rod for large pitch, low shear and high conveying according to claim 2, characterized in that: The stainless steel is 304 stainless steel or 316 stainless steel.

4. The special screw with large pitch, low shear and high conveying according to claim 2, characterized in that: The anti-rust coating is galvanized, or nickel-plated, or chromium-plated.

5. The special screw for large pitch, low shear and high conveying according to claim 2, characterized in that: The decorative layer is a baking paint layer.

6. The special screw rod for large pitch, low shear and high conveying according to claim 1, wherein: The connecting rod body is provided with a notch.

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