High-pressure spraying gun with transmission arm

Abstract

The invention relates to the technical field of dust removing equipment and methods, and particularly discloses a high-pressure spraying gun rust removing device and a rust removing method using the same. The rust removing method comprises the steps that a high-pressure spraying gun, a water pump and a pressurizing pump are connected; the pressurizing pump is pressurized to the pressure of 30MPa,fine sand is prepared and absorbed into the spraying gun at the front end of the high-pressure spraying gun by negative pressure formed by water flow, and water sand is formed and sprayed out; and high-energy water sand jet is used for impacting and wearing down the removed metal surface, a plurality of layers such a rusting layer and a scaling layer of the metal surface are distributed in a multi-hole mode, once the scaling layer is permeated, the high-pressure water sand jet is inserted between the scaling layer and a metal base material, and when the impacting energy of the high-pressure water sand jet is greater than the attaching strength between the scaling layer and the base material, the rusting layer and the scaling layer are removed. The high-pressure spraying gun rust removing device has the advantages that the security adaptability of the high-pressure water jet is good, the high-pressure spraying gun rust removing device can be applied to combustible and explosive areas, the high-pressure water jet rust removing security is high, operation personnel cannot be physical damaged, and the life of surrounding people in the dust removing process is not influenced.

Description

technical field [0001] The invention relates to the technical field of derusting equipment and derusting methods, in particular to a high-pressure spray gun with a transmission arm. Background technique [0002] LNG storage tanks are prone to rust. At present, manual derusting or electric grinding wheels are generally used for anti-corrosion and derusting. The production device area of ​​LNG storage tanks is a flammable and explosive area. No matter whether manual derusting or electric derusting is used, there will be sparks. In order to ensure safety, rust removal and anticorrosion work cannot be carried out at many points. Even areas where rust removal work can be carried out require a lot of safety work in the early stage before construction, and the construction progress and construction quality cannot be guaranteed. Contents of the invention [0003] The purpose of the present invention is to provide a high-pressure spray gun with a transmission arm, which can be cons...

AI Technical Summary

Problems solved by technology

[0002] LNG storage tanks are prone to rust. At present, manual derusting or electric grinding wheels are generally used for anti-corrosion and derusting. The production device area of ​​LNG storage tanks is a flammable and explosive area. No matter whether manual derusting or electric derusting is used, there will be sparks. In order to ensure safety, rust removal and anti-corrosion work cannot be carried out at many points. Even areas where rust removal work can be carried out require a lot of safety work in the early stage before construction, and the construction progress and construction quality cannot be guaranteed.

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