Self-enclosed coaxial equal-angle alternate rotary descaling header device

Abstract

The invention discloses a self-enclosed coaxial equal-angle alternate rotary descaling header device, which comprises a header provided with nozzles. The descaling header consists of an outer pipe and an inner pipe; the inner pipe is in movable fit arrangement in the outer pipe; nozzle groups in rows are arranged on the outer pipe of the descaling header at equal angles radially; nozzles of each row of nozzle group are uniformly distributed along the axial direction of the outer pipe; the inner wall is provided with a row of normally open water holes corresponding to a row of normal descaling work nozzles of the outer pipe, and is simultaneously provided with nozzle enclosing devices corresponding to other rows of nozzles; one end of the inner pipe is enclosed, while the other end is communicated with high pressure water; two ends between the pipe walls of the inner pipe and the outer pipe are provided with a rotary positioning device and a rotary sealing device; and a motor drives a gear arranged on the outer pipe to rotate the outer pipe. The self-enclosed coaxial equal-angle alternate rotary descaling header device has the advantages of reasonable structure, high control accuracy, high descaling effect, convenient maintenance, long service life, and capacity of automatically switching to corresponding nozzle groups for descaling steel plate and strips with same thickness, different thicknesses and different widths so as to complete descaling work.

Description

technical field [0001] The invention relates to a high-pressure descaling device for a self-enclosed coaxial equal-angle rotating descaling header on a hot-rolled strip steel production line, in particular to a self-enclosed coaxial and equiangular alternate rotating descaling header device. Background technique [0002] In the production process of hot-rolled strips, the commonly used variable-height high-pressure descaling technology mainly includes the variable-height descaling method composed of a single jet header device that can move up and down and a mechanically telescopic header expansion device connected, a single The variable-height descaling method consisting of a spray header device that can move up and down and a high-pressure hose, and a descaling method that rotates around the main axis with variable height and variable spray angle. The problem of changing the number of descaling nozzles due to the change of steel width, the problem of unstable operation and ...

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Problems solved by technology

[0002] In the production process of hot-rolled strips, the commonly used variable-height high-pressure descaling technology mainly includes the variable-height descaling method composed of a single jet header device that can move up and down and a mechanically telescopic header expansion device connected, a single The variable-height descaling method consisting of a spray header device that can move up and down and a high-pressure hose, and a descaling method that rotates around the main axis with variable height and variable spray angle. The problem of changing the number of descaling nozzles due to the change of steel width, the problem of unstable operation and cumbersome maintenance work, the problem of easy bursting of high-pressure hoses, the problem of short service life and the problem of not being able to rotate and alternate use

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