Movable spraying device and spraying method thereof

Abstract

The invention relates to the field of machinery, in particular to a movable spraying device and a spraying method thereof. According to the spraying device provided by the invention, firstly, the production safety can be greatly improved, high-altitude operation can be avoided in a limited manner, and secondly, to-be-sprayed equipment is firstly in a horizontal state and is prevented on the spraying device, and then the to-be-sprayed equipment is slowly inclined at an angle, so that the risk of sliding down is effectively avoided, and the personal safety in the working process is greatly guaranteed; and in addition, compared with the prior art, the spraying device provided by the invention has the advantages that the labor intensity can be greatly reduced, the efficiency is improved, and the labor intensity is greatly reduced and the production efficiency is improved due to the fact that the high-altitude operation is reduced or avoided.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a mobile spraying device and a spraying method thereof. Background technique [0002] A large number of heat exchange tubes are arranged inside the large shell and tube heat exchanger, and the heat exchange tubes are generally made of carbon steel. In order to prolong the service life of the shell-and-tube heat exchanger, it is necessary to spray the inside of the heat exchange tube to form a paint film inside the heat exchange tube. In order to make the paint flow better, it is necessary to tilt the shell and tube heat exchanger at a certain angle when spraying. The method commonly used now is to weld an inclined platform with an included angle of 9-11° with steel and iron plates for spraying (the low end of the spraying platform is generally about 55 cm high, the high end is generally about 200 cm high, and the length is about 7-8 meters. ). When spraying the inner wall of the heat ...

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Problems solved by technology

[0003] However, since the height of the highest point of the current spraying platform from the ground is generally more than 2 meters, the height is relatively high. When the crane hoisting equipment is placed on the spraying platform, due to the height difference between the two ends of the spraying platform, it needs to be placed at an angle, which is likely to cause equipment or slings The sliding of the equipment is often more than ten tons or dozens of tons, which is very dangerous

Furthermore, when carrying out external anti-corrosion coating, because it is necessary to lift the front end of the tube bundle with a crane to make it in a horizontal state to ensure uniform spraying of the tube bundle, people often have to stand on a shelf at least 2 meters high for external anti-corrosion coating. The height of the larger equipment shelf should reach 2.5 meters. You must pay attention when spraying the exterior defense, otherwise it will easily cause danger

In addition, since different thicknesses of paint films may need to be sprayed on different tube bundles, this requires different angles of the spraying platform, and the current spraying platform cannot meet the requirements of different angles due to the fixed angle

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