Equipment and method for spraying plastic on inner wall of metal pipe

Abstract

The invention discloses an equipment and a method for spraying the inner wall of a metal pipe. The equipment for spraying the inner wall of a metal pipe comprises a base, and a powder suction recovery mechanism and a swing arm are sequentially arranged along the horizontal direction from one end to the other end on the base. The high-pressure powder supply mechanism is used to provide high-pressure spray powder from one end of the metal pipe to be sprayed to its inner wall, and the powder suction recovery mechanism is used to supply high-pressure powder from the other end of the metal pipe to be sprayed. The excess high-pressure plastic-spraying powder provided by the powder supply mechanism is sucked and recovered, and the swing-arm type material holding mechanism is used to provide the high-pressure powder supply mechanism with the metal pipe to be sprayed and transfer the sprayed metal pipe; the present invention not only greatly improves the The manual operation is reduced, and the inner spraying operation of the metal pipe can be completed quickly, which saves time and labor, and greatly improves the production efficiency. The powder is absorbed and recovered, which not only saves resources but also prevents environmental pollution.

Description

technical field [0001] The disclosure relates to the technical field of production of metal inner plastic pipes, in particular to a plastic spraying equipment and method for the inner wall of metal pipes. Background technique [0002] The metal inner plastic pipe is based on a seamless metal pipe or a welded metal pipe, and the inner wall is coated with high-adhesion, anti-corrosion, food-grade hygienic polyethylene powder coating or epoxy resin coating. The metal inner plastic pipe retains the rigidity and strength of the traditional metal pipe, and the metal inner plastic pipe is better than the plastic pipe and the aluminum plastic pipe. The metal inner plastic pipe has the characteristics of smooth inner wall, low frictional resistance and no fouling. At the same time, the outer wall of the metal inner plastic pipe is more beautiful and luxurious. The metal inner plastic tube has light weight, good toughness, impact resistance and high compressive strength, and its appl...

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Problems solved by technology

[0003] However, at present, when the metal inner plastic pipe is processed, it is usually manually controlled, and it needs to be moved and supported manually. Moreover, the powder suction equipment is used in the inner wall spray technology, and the powder is sprayed by a fan, so it is impossible to remove the excess plastic powder. Recycling is time-consuming and labor-intensive, and the production efficiency is very low

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