Partial outside surface shot blasting processing device of socket end of nodular cast iron pipe

Abstract

The invention relates to a partial outside surface shot blasting processing device of a socket end of a nodular cast iron pipe, which comprises a dolly, a shot blasting cleaning chamber, at least one shot blasting device, a cylinder, a pipe port sealing device, a pipe head upper seal ring and a pipe head lower seal ring. One end of the cylinder is fixed on a roadbed where the dolly travels forwards, the other end of the cylinder is fixed on the shot blasting cleaning chamber, an outer steel wire ring, a magnet ring and an inner steel wire ring are sequentially sleeved on the nodular cast iron pipe, and the pipe head upper seal ring and the pipe head lower seal ring are respectively installed on outsides of upper circumferences and outsides of lower circumferences of the outer steel wire ring, the magnet ring and the inner steel wire ring. The pipe head upper seal ring and the pipe head lower seal ring are fixed on one side outside the shot blasting cleaning chamber inserted in the nodular cast iron pipe, and the pipe port sealing device is fixed on the other side of the shot blasting cleaning chamber, stretches into the shot blasting cleaning chamber and abuts against a pipe port of the nodular cast iron pipe stretching into the shot blasting cleaning chamber. The partial outside surface shot blasting processing device is long in service life and low in cost, steel shots can be repeatedly used, the steel shots flying out through the magnet ring are absorbed to the magnet ring, and quality of the steel shots of a pipe is guaranteed.

Description

technical field [0001] The invention relates to a shot blasting treatment device, in particular to a shot blasting treatment device for the partial outer surface of the socket end of a nodular cast iron pipe. Background technique [0002] At present, the centrifugal ball milled cast iron pipe socket at home and abroad is connected to the socket, sealed by a sealing ring, and the outer surface of the pipe is sprayed with zinc. After the centrifugal ductile iron pipe is annealed in the annealing furnace and cooled by water, a hard oxide scale is formed on the surface. In China, this is done by wire brush grinding and overall pipe shot blasting. It is difficult for the steel wire brush to remove the hard oxide scale. Pipe installation In the end, the zinc layer at the interface is very easy to fall off, causing water leakage and water seepage at the interface of the pipe, which greatly affects the service life of the pipe. The overall shot blasting equipment is complicated and...

AI Technical Summary

Problems solved by technology

After the centrifugal ductile iron pipe is annealed in the annealing furnace and cooled by water, a hard oxide scale is formed on the surface. In China, this is done by wire brush grinding and overall pipe shot blasting. It is difficult for the steel wire brush to remove the hard oxide scale. Pipe installation In the end, the zinc layer at the interface is very easy to fall off, causing water leakage and water seepage at the interface of the pipe, which greatly affects the service life of the pipe

The overall shot blasting equipment is complex and costly, which affects the production rhythm

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