Rotating type high-pressure airless spraying gun

Abstract

The invention relates to a rotary high-pressure no-air spray gun, comprising power and transportation system and nozzle system at the head end. The main body of said power and transportation system is a specific motor. The head end of motor rotary shaft is connected with the nozzle system and the motor body is connected with air source by pressure connection. The tail end of motor rotary shaft is connected with connector with double interfaces. The other end of connector with double interfaces is connected with coating interface directly. The main body of said nozzle system is the nozzle carrier. The tail end of nozzle carrier is connected with the head end of motor rotary shaft and the head end of nozzle carrier is connected with nozzle or lengthening nozzle. The invention is provided with good compatibility to the diameter of steel pipe and the type of dope. It can simplify the coating equipment for the internal wall of steel pipe evidently and can improve coating efficiency and coating quality notably. after the internal wall of steel pipe is coated by the spray gun, the organic coating layer on the internal wall can completely satisfy the basic demand to the protection of steel pipe inner in various field in country.

Description

technical field [0001] The invention relates to the technical field of spraying in metal pipes, and belongs to a rotary high-pressure airless spray gun. Background technique [0002] Steel pipes are widely used in the industrial field, and the working environment they face is also complex and diverse. Coating an organic coating on the inner wall of the steel pipe to isolate the metal from the external medium is a method that can effectively protect the metal substrate from corrosion, erosion and reduce the internal resistance of the steel pipe. [0003] At present, the inner wall of the steel pipe is sprayed with an organic coating by means of a high-pressure airless method. The angle of the spray gun is fixed and moved parallel to the steel pipe axis, while the steel pipe rotates. This method has the following disadvantages: [0004] There are many diameters of steel pipes, and it is difficult for a single-sized spray gun to ensure that the inner walls of steel pipes of d...

AI Technical Summary

Problems solved by technology

[0004] There are many diameters of steel pipes, and it is difficult for a single-sized spray gun to ensure that the inner walls of steel pipes of different diameters are in the best coverage area for high-pressure airless spraying, and a single spray gun cannot integrate the functions of one-component paint spraying and two-component paint spraying. Cause poor versatility of the spray gun;

[0005] The variety of steel pipe diameters and weight differences make the steel pipe support and rotation mechanism poor in versatility, and the types of steel pipes that can be covered by an internal coating production line are limited;

[0006] The number of times of coating covering the same area of ​​the inner wall of the steel pipe is small, the thickness control is difficult, the probability of leakage is high, and the loss of coating is large

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