Automatic blowdown device of continuous casting machine and using method of automatic blowdown device

Abstract

The invention discloses an automatic blowdown device of a continuous casting machine. The automatic blowdown device comprises a secondary cooling water main pipeline, wherein a control box is arranged on one side of the secondary cooling water main pipeline; the tail end of the secondary cooling water main pipeline is vertically connected with a first blowdown pipe; the first blowdown pipe is connected to a second blowdown pipe through a pneumatic valve; fan-shaped section equipment is arranged at the front end of the secondary cooling water main pipeline; the fan-shaped section equipment is composed of seven secondary cooling water branch pipelines which are arranged in sequence; the secondary cooling water branch pipelines are perpendicular to the secondary cooling water main pipeline; fan-shaped section rollers are correspondingly arranged below the fan-shaped section equipment and the second blowdown pipe; and two photoelectric tubes are separately arranged above and below each fan-shaped section roller. When the automatic blowdown device is used in a shutdown maintenance process, a circumstance that a nozzle is blocked and a casting blank is not uniformly cooled, caused by poor quality of secondary cooling water in a production process, is avoided, the quality of a continuous casting blank is greatly improved, production of variety steel is expanded and the economic benefits are improved; and the automatic blowdown device is simple in structure and convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of metallurgical machinery, in particular to an automatic sewage discharge device for a continuous casting machine and a method for using the same. Background technique [0002] Automatic sewage discharge device for slab continuous casting machine. The traditional method uses sedimentation tanks, chemical degreasers, hot water pools, cold water pools, and self-cleaning filters to purify water quality to reduce nozzle clogging rate. In actual production, this filtering method can only remove The purification effect of the large particles in the water quality is not ideal, and due to the intermittent use of the secondary cooling water, the impact force of the water causes some dirt attached to the inner wall of the water pipe to fall off and block the nozzle, resulting in uneven cooling and reduced continuous cooling. The internal quality and surface quality of the slab bring great difficulties to production a...

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Problems solved by technology

[0002] Automatic sewage discharge device for slab continuous casting machine. The traditional method uses sedimentation tanks, chemical degreasers, hot water pools, cold water pools, and self-cleaning filters to purify water quality to reduce nozzle clogging rate. In actual production, this filtering method can only remove The purification effect of the large particles in the water quality is not ideal, and due to the intermittent use of the secondary cooling water, the impact force of the water causes some dirt attached to the inner wall of the water pipe to fall off and block the nozzle, resulting in uneven cooling and reduced continuous cooling. The internal quality and surface quality of the slab bring great difficulties to production and operation, and also cause huge losses to the company. In order to reduce production and quality accidents, this invention proposes an automatic sewage discharge device for continuous casting machines and its use method

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