360 degree sandblasting nozzle

Abstract

The invention relates to a 360 degree sandblasting nozzle. The 360 degree sandblasting nozzle comprises a spray gun housing, a support, a nozzle and a screw, and the spray gun housing is open at bothends, one end is a sand inlet end, and other end is a sand outlet end, the nozzle is disposed at the sand outlet end of the spray gun housing, and the nozzle and the sand outlet end of the spray gun housing form a circular sand spray ring for achieving 360 degree sandblasting; the support is disposed in the spray gun housing, and the screw is connected to the support through the nozzle. The support is provided with a through hole for accommodating the sands, and the central axis of the nozzle is the same axis as the central axis of the spray gun housing. A spacer sleeves on the screw between the nozzle and the support. The nozzle has a tapered structure, the diameter of the circular sand spray ring is gradually reduced in along the direction in which the sand is ejected. Compared with theprior art, the 360 degree sandblasting nozzle can clean the inner surface of tubing without the rotation, and the scale at inner wall of the tubing can be removed, so that the tubing accords with theinternal spraying conditions.

Description

technical field [0001] The invention relates to a sandblasting device, in particular to a 360-degree sandblasting nozzle. Background technique [0002] With the development of oil fields, during the exploration and production of oil and natural gas, due to the complex geological structure and the harsh downhole environment, oil pipes suitable for complex environments have also been developed during the drilling process, such as electronic drill pipes. , heavy drill pipe, etc.; when the inner surface of this kind of drill pipe is treated, the pipe is not easy to rotate, and the traditional inner surface sandblasting nozzle cannot meet the inner surface treatment requirements. [0003] Chinese patent CN105215862A discloses a sandblasting device for the inner and outer surfaces of steel pipes, including an inner sandblasting device, an outer sandblasting device, and a driving device; the inner sandblasting device includes a first frame, an inner sandblasting nozzle, and a rotar...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patents, the inner sandblasting nozzle needs to be rotated by the rotating mechanism to achieve 360-degree sandblasting. The structure is complicated and cannot realize 360-degree sandblasting by itself.

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