Stainless steel pipe three-layer polypropylene anti-corrosion pipe manufacturing equipment and its use method

Abstract

The invention discloses manufacturing equipment for stainless steel pipe three-layered polypropylene anticorrosion pipes and a manufacturing method of the manufacturing equipment. The manufacturing equipment comprises a feed mechanism (1) for conveying stainless steel pipes, and a sandblast derusting unit (2), a painting unit (3), a cutting unit (4) and a water cooling unit (5) are sequentially arranged over the feed mechanism (1). The sandblast derusting unit (2) comprises a shot blasting room (201), the stainless steel pipes (6) pass through the shot blasting room (201), bevel protectors (202) are arranged at both ends of each stainless steel pipe (6), and the bevel protectors (202) are polyurethane pipes; impeller heads (203) are arranged at the bottom of the shot blasting room (201), through holes (204) are formed between the shot blasting room (201) and the impeller heads (203), the interior of each impeller head (203) comprises a rotary shaft (205), and a shot blasting impeller (206) is arranged on each rotary shaft (205). The invention realizes the full automation of sandblast derusting, painting, cutting and water cooling, the structure is reasonable, and the use effect is excellent.

Description

technical field [0001] The invention relates to a manufacturing equipment and method for a stainless steel pipe three-layer polypropylene anticorrosion pipe, belonging to the field of stainless steel pipe manufacturing. Background technique [0002] In the production process of stainless steel pipe three-layer polypropylene anti-corrosion pipe, there are mainly the following problems: 1. Sand blasting and rust removal are required, that is, the stainless steel pipes are connected through a connector, and then sand blasted and rust removed through the shot blasting room in turn. The existing connectors are all rigid structures, and it is impossible to make every stainless steel pipe and each connector exactly the same in production, so it is inevitable that there will be gaps after the connectors are installed on the stainless steel pipes. During the process of rust removal, some abrasives will enter these gaps and stay in them. When the pipe is connected to the end face of ...

AI Technical Summary

Problems solved by technology

The main disadvantages of this process method are: one person is required to specialize in cutting work, the labor efficiency is low, and the labor cost is increased; the cutting work is purely manual operation, which requires high technology and experience for the employee It may cause damage to the anti-corrosion layer and stainless steel pipe, and the operation level of the employee will have a direct impact on product quality; the temperature of the stainless steel pipe and anti-corrosion layer after coating and before cooling is above 200 degrees Celsius, and manual cutting operation has certain risks , may cause personal injury incidents due to personal negligence or other accidental reasons

This cooling method has many disadvantages: when the stainless steel pipe is coated with 3PP, it directly enters the spray or water cooling system. During operation, water is sprayed onto the surface of the pipeline coating, causing water marks on the surface of the coating. When the flowing water is concentrated, it will also cause grooves on the surface of the coating, which will easily cause uneven thickness of the PP layer, and when the cooling water volume changes. , produce water hammer points and dark spots on the surface of the anti-corrosion coating, affecting the appearance of the anti-corrosion coating surface

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