CN220946596U

CN220946596U - Barrel screw

Info

Publication number: CN220946596U
Application number: CN202322979810.3U
Authority: CN
Inventors: 金开发; 陈绵书
Original assignee: Shanghai Jofur Advanced Materials Co ltd
Current assignee: Shanghai Jofur Advanced Materials Co ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-05-14
Anticipated expiration: 2033-11-03

Abstract

The utility model relates to the technical field of resin processing, and discloses a barrel screw, which is suitable for a barrel body, wherein a screw rod piece is arranged in the barrel body, the surface of the screw rod piece is provided with a wear-resistant layer, the screw rod piece is provided with an extrusion part, the extrusion part is matched with the barrel body for extruding materials, the wear-resistant layer is a coating, the coating adopts alloy materials, the alloy materials are hastelloy, one end of the extrusion part is connected with a first conveying part, the other end of the extrusion part is connected with a second conveying part, the first conveying part is fixedly provided with a helical blade, the second conveying part is fixedly provided with a helical blade, the helical blade is rotationally connected with the barrel body, and the outer diameter of the extrusion part is gradually increased in the direction from the first conveying part to the second conveying part. According to the barrel screw, the hardness and the wear resistance of the screw rod piece can be improved by the aid of the wear-resistant layer, so that when PVDF materials are conveyed, the screw rod piece is not easy to wear greatly due to friction even if being in a wet environment, and the service life of the screw rod piece is prolonged.

Description

Barrel screw

Technical Field

The utility model relates to the technical field of resin processing, in particular to a barrel screw.

Background

PVDF (polyvinylidene fluoride) is a high-performance plastic with good chemical resistance, high temperature resistance and electrical insulation. In general, PVDF panels are hard or semi-hard, have high rigidity and strength, and are suitable for many application fields, such as construction, chemical industry, electronics, and the like. The PVDF resin needs to be transported through the barrel during processing.

In the conveying process of PVDF resin materials, the PVDF resin materials are continuously pushed forward by the screw rod in the gun barrel, the screw rod is continuously rubbed with the inner wall of the gun barrel, the screw rod is in a moist environment, and the surface materials of the screw rod are easy to corrode in the rubbing process, so that the screw rod is abraded greatly.

Disclosure of utility model

The utility model aims to provide a barrel screw for solving the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a barrel screw, is applicable to the barrel body, set up the screw rod spare in the barrel body, screw rod spare surface sets up the wearing layer, the screw rod spare sets up extrusion portion, extrusion portion with the cooperation of barrel body is used for extruding the material.

Preferably, the wear-resistant layer is a plating layer.

Preferably, the plating layer is made of alloy materials.

Preferably, the alloy material is hastelloy.

Preferably, one end of the pressing part is connected with the first conveying part.

Preferably, the other end of the pressing part is connected with the second conveying part.

Preferably, the first conveying part is fixedly provided with a helical blade.

Preferably, the second conveying part is also fixedly provided with the helical blade.

Preferably, the helical blade is rotatably connected with the barrel body.

Preferably, the outer diameter of the pressing part gradually increases in the direction from the first conveying part to the second conveying part.

The barrel screw has the following beneficial effects:

According to the barrel screw, the hardness and the wear resistance of the screw rod piece can be improved by the aid of the wear-resistant layer, so that when PVDF materials are conveyed, the screw rod piece is not easy to wear greatly due to friction even if being in a wet environment, and the service life of the screw rod piece is prolonged.

Drawings

FIG. 1 is a schematic view of a barrel body according to an embodiment of the present application;

Fig. 2 is a perspective view of a barrel screw according to an embodiment of the present application;

Fig. 3 is a front view of the screw rod of fig. 2.

In the figure: 1. a barrel body; 2. a screw rod member; 21. a first conveying section; 22. a second conveying section; 23. an extrusion part; 24. helical blades.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-2, the present utility model provides an embodiment of a barrel screw, which is suitable for a barrel body 1, wherein a feed inlet is formed at the top of the barrel body 1, a discharge outlet is formed at one end of the barrel body 1, a screw rod 2 is arranged in the barrel body 1, PVDF resin material is poured into the barrel body 1 through the feed inlet, the screw rod 2 rotates in the barrel body 1, and the material is gradually axially conveyed to the discharge outlet of the barrel body 1 along with the rotating screw rod 2.

The surface of the screw rod piece 2 is provided with a wear-resistant layer, the wear-resistant layer is a plating layer, the plating layer is made of an alloy material, the alloy material is hastelloy, the hastelloy is a nickel-based corrosion-resistant alloy and is mainly divided into two main types of nickel-chromium alloy and nickel-chromium-molybdenum alloy, the hastelloy has good corrosion resistance and thermal stability, and the hastelloy is used for reducing the influence of the temperature in the gun barrel body 1 and the change of the acid-base environment on the screw rod piece 2, so that the screw rod piece 2 is firmer and more durable; the hastelloy is a metal material with high strength and toughness, and the hastelloy is plated on the surface of the screw rod piece 2, so that the stretching resistance of the screw rod piece 2 can be improved, and the deformation of the screw rod piece 2 in the use process can be effectively reduced; and hastelloy is a metal material with extremely high hardness and wear resistance, and the arranged wear-resistant layer can improve the hardness and wear resistance of the screw rod piece 2, so that when PVDF materials are conveyed, even if the screw rod piece 2 is in a moist environment, the screw rod piece 2 is not easy to wear greatly due to friction (friction between the screw rod piece 2 and the inner wall of the gun barrel body 1 during rotation), and the service life of the screw rod piece 2 is prolonged.

In addition, the inner wall of the gun barrel body 1 also adopts a hastelloy coating for reinforcing the gun barrel body 1 and improving the wear resistance of the inner wall of the gun barrel body 1.

Specifically, as shown in fig. 2-3, the screw rod member 2 is provided with an extrusion part 23, the extrusion part 23 is matched with the gun barrel body 1 for extruding materials, one end of the extrusion part 23 is connected with a first conveying part 21, the other end of the extrusion part 23 is connected with a second conveying part 22, both the first conveying part 21 and the second conveying part 22 are fixedly provided with helical blades 24, and the helical blades 24 are rotationally connected with the gun barrel body 1.

In this embodiment, when the screw rod 2 rotates, the screw blade 24 on the first conveying portion 21 conveys the material to the extruding portion 23, the material enters the second conveying portion 22 after being extruded by the extruding portion 23, and the screw blade 24 on the second conveying portion 22 conveys the material to the discharge port of the gun barrel body 1, so as to realize discharging.

Further, in the direction from the first conveying portion 21 to the second conveying portion 22, the outer diameter of the extruding portion 23 is gradually increased, so that the space between the extruding portion 23 and the inner wall of the gun barrel body 1 is gradually reduced, and the material is continuously conveyed to a smaller space after entering the extruding portion 23, so that the pressure applied to the material by the extruding portion 23 is gradually increased, the material is fully compacted between the extruding portion 23 and the gun barrel body 1, and the tensile strength of the material is improved.

It can be understood that the heating system can be arranged in the screw rod member 2 and used for heating materials, the mobility of PVDF resin materials is enhanced under the heating effect, the materials are convenient to convey, the barrel body 1 can be provided with the cooling system, the temperature of the materials in the barrel body 1 is ensured to be kept in a reasonable range, and the materials are prevented from deteriorating due to overhigh temperature.

Working principle: when the screw rod member 2 rotates, the helical blade 24 on the first conveying part 21 conveys the material to the extrusion part 23, the material enters the second conveying part 22 after being extruded by the extrusion part 23, and the helical blade 24 on the second conveying part 22 conveys the material to the discharge hole of the gun barrel body 1, so that the discharging is realized.

In view of the foregoing, it will be appreciated that while embodiments of the utility model have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made hereto without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a barrel screw, is applicable to barrel body (1), its characterized in that: a screw rod piece (2) is arranged in the gun barrel body (1);

The surface of the screw rod piece (2) is provided with a wear-resistant layer;

The screw rod piece (2) is provided with an extrusion part (23), and the extrusion part (23) is matched with the gun barrel body (1) to extrude materials.

2. A barrel screw according to claim 1, wherein: the wear-resistant layer is a plating layer.

3. A barrel screw according to claim 2, wherein: the plating layer is made of alloy materials.

4. A barrel screw according to claim 3, wherein: the alloy material is hastelloy.

5. A barrel screw according to claim 1, wherein: one end of the extrusion part (23) is connected with the first conveying part (21).

6. A barrel screw according to claim 5, wherein: the other end of the extrusion part (23) is connected with the second conveying part (22).

7. The barrel screw of claim 6, wherein: the first conveying part (21) is fixedly provided with a helical blade (24).

8. The barrel screw of claim 7, wherein: the second conveying part (22) is also fixedly provided with the helical blade (24).

9. The barrel screw of claim 8, wherein: the helical blade (24) is rotationally connected with the gun barrel body (1).

10. The barrel screw of claim 6, wherein: the outer diameter of the extrusion part (23) gradually increases in the direction from the first conveying part (21) to the second conveying part (22).