Spraying equipment for outer surface of oil drill pipe

Abstract

The invention discloses spraying equipment for the outer surface of an oil drill pipe. The spraying equipment comprises a box. Supporting feet are fixed to the four corners of the lower portion of thebox correspondingly. An opening cover is mounted on the upper portion of the box. Spraying tanks are fixed to the outer walls of the two sides of the box correspondingly. The output ends of the spraying tanks are connected with connecting pipes. One ends of the connecting pipes penetrate through the outer wall of the box and extend into the box, and spraying heads are fixed to one ends of the connecting pipes. A circular opening is formed in the bottom of the box and internally provided with a disc. Sliding blocks are fixed to the outer walls of the two sides of the disc correspondingly. Thebox is internally provided with the drill pipe. According to the spraying equipment, the drill pipe is fixed to the upper portion of the disc, the disc can rotate by rotating a cranking bar, the drillpipe rotates along with the disc, and the drill pipe is good in stability property and does not shake during rotating; and coating in the spraying tanks is sprayed out through the spraying heads andcan be evenly sprayed on the drill pipe, the operation process is conducted in the box, the coating can be prevented from splashing onto operators, practicability is high, and the spraying equipment is worth popularizing energetically.

Description

technical field [0001] The invention relates to the technical field of oil drill pipe processing, in particular to oil drill pipe outer surface spraying equipment. Background technique [0002] The drill pipe is a steel pipe with a threaded tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or the bottom hole device at the bottom of the drilling well. The purpose of the drill pipe is to transport the drilling mud to the drill bit and together with the drill bit to raise, lower or rotate the bottom hole device. Drill pipe must be able to withstand enormous internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, the drill pipe can be used many times. Generally, a layer of paint is sprayed on the outer surface of the drill pipe, the purpose is to prevent the outer surface of the drill pipe from rusting or being corroded by other substances. The existin...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that during the operation of the existing spraying equipment, due to the certain viscosity of the paint, after the paint on the surface of the drill pipe is air-dried, there is more paint on the part of the drill pipe in contact with the desktop, which cannot make the paint uniform. The problem of spraying on the surface of the drill pipe, and the proposed spraying equipment for the outer surface of the oil drill pipe

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