Sand blasting cleaning equipment for inner wall and outer wall of steel pipe and cleaning method

Abstract

The invention discloses sand blasting cleaning equipment for the inner wall and the outer wall of a steel pipe and a method for cleaning the inner wall and the outer wall of the steel pipe by using the equipment. The equipment comprises a cleaning bin, a guide rail, a material carrying system and a sand blasting system, wherein the sand blasting system comprises a spray head device, the spray headdevice comprises an inner wall spray head device and an outer wall spray head device, a sand conveying pipe comprises an inner wall sand conveying pipe body and an outer wall sand conveying pipe body, a spray pipe comprises an inner wall spray pipe body and an outer wall spray pipe body, the inner wall spray head device is connected with the inner wall spray pipe body, the inner wall spray pipe body communicates with a sand discharging tank through the inner wall sand conveying pipe body, the inner wall spray pipe body is fixed to a spray pipe vehicle driven by a second walking power device,the spray pipe vehicle is arranged on the guide rail, the outer wall spray head device is connected with the outer wall spray pipe body, the outer wall spray pipe body communicates with the sand discharging tank through the outer wall sand conveying pipe body, the outer wall spray pipe body extends into a cleaning bin and is fixed to a sand blasting working position. According to the provided sandblasting cleaning equipment for the inner wall and the outer wall of the steel pipe, the requirement of cleaning the small-caliber steel pipe can be met, moreover, the inner wall and the outer wall of the steel pipe can be cleaned at the same time, and when the equipment is used for cleaning the steel pipe, the cleaning efficiency is high.

Description

technical field [0001] The invention relates to the technical field of cleaning equipment and a cleaning method for the inner and outer walls of steel pipes, in particular to a sandblasting cleaning equipment for cleaning the inner and outer walls of small-diameter steel pipes with a diameter of (DN70mm-DN400mm) and a cleaning method thereof. Background technique [0002] Steel pipes are widely used in tap water, natural gas, petroleum, chemical industry, medicine, communications, electric power, marine and other engineering fields. In order to enhance the strength and corrosion resistance of steel pipes, it is usually necessary to plastic-coat the steel pipes inside and outside. It is necessary to clean the steel pipe, that is, remove debris, scale, welding slag, sticky sand, dirt and other attachments on the surface of the steel pipe, so that the surface of the inner and outer walls of the steel pipe presents a uniform roughness, and enhance the adhesion of the surface coat...

AI Technical Summary

Problems solved by technology

When cleaning the inner wall of a small-diameter steel pipe with a diameter of (DN70mm~DN400mm), the size of the blasting blades in the steel pipe is small, the shot blasting amount is low, and the length of the general steel pipe is particularly long. When the diameter of the steel pipe is small, a transmission bracket is required The radial size of the structure is small, but due to the long size of the steel pipe, this will result in small rigidity and large deflection of the transmission bracket, which affects the cleaning effect of the inner wall of the small-diameter steel pipe

[0004] In the prior art, the publication number is CN 207448244U, and a kind of small-diameter steel pipe inner wall shot blasting machine has the following defects: 1. It can only clean the inner wall of the steel pipe, and cannot clean the outer wall of the steel pipe while cleaning the inner wall of the steel pipe. Low cleaning efficiency and high production cost

Due to size constraints, the support mechanism in the shot blasting equipment must be miniaturized, and the support mechanism needs to move in both the circumferential direction and the axial direction of the steel pipe relative to the inner wall of the steel pipe, so the miniaturization of the rotary support mechanism is required Simultaneously meet the above two directions of rolling, the design and manufacture are difficult, the support structure is relatively complicated, the production cost is high, and the size is relatively large, which cannot meet the cleaning of small diameter steel pipes

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