Backwash rolling mill uniform fast-cooling header pipe

Abstract

The invention relates to a backwash rolling mill uniform fast-cooling header pipe. The backwash rolling mill uniform fast-cooling header pipe comprises a water inlet pipe and a header pipe body connected with the water inlet pipe. A backwash opening is formed in the other end of the header pipe body. The water inlet end of the water inlet pipe is connected with a water inlet valve through a water inlet flange. A laminar flow cavity is installed in the side wall of the header pipe body. A plurality of overflow holes which are evenly distributed to the side wall of the header pipe body are formed between the laminar flow cavity and the header pipe body. The laminar flow cavity is provided with a plurality of nozzles which are evenly distributed. The water inlet flange is connected with a blow-down valve through a blow-off pipe. The backwash rolling mill uniform fast-cooling header pipe is simple in structure; turbulent cooling water in the header pipe body can jet out uniform jet streams from the nozzles, uniform heat exchange can be formed on the surface of a steel plate, and therefore the temperature of the steel plate can be quickly lowered to an ideal temperature, and steel with a superior mechanical property can be produced and manufactured; and when dregs are deposited and precipitated in the header pipe body, a backwash valve can be opened regularly, meanwhile, the water inlet valve is closed, the blow-down valve is opened, and accordingly the dregs can be washed away from the blow-down valve and normal operation of production working procedures is guaranteed.

Description

technical field [0001] The invention relates to a uniform and fast cooling header of a rolling mill for backwashing. Background technique [0002] The post-rolling cooling device for hot-rolled strip steel is one of the key links in the production of hot-rolled strip steel. The speed, crimping temperature and its control precision directly affect the quality and performance of the final product. At present, the post-rolling cooling device of strip steel is developing rapidly, especially in the 1980s. Among them, laminar cooling has the advantages of wide range of processed products and simple equipment maintenance. In the process of cooling the steel plate in the existing laminar flow cooling header, the cooling is not uniform enough and cannot be quickly cooled to the ideal temperature, and dross will settle in the main body of the header for a long time, and the deposited dregs will block the flushing hole. As a result, the cooling effect of the nozzle on the steel plate...

AI Technical Summary

Problems solved by technology

In the process of cooling the steel plate in the existing laminar flow cooling header, the cooling is not uniform enough and cannot be quickly cooled to the ideal temperature, and dross will settle in the main body of the header for a long time, and the deposited dregs will block the flushing hole. Causes the nozzle to have poor cooling effect on the steel plate

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