Steel ladle sliding nozzle oil cylinder and steel ladle nozzle control device

Abstract

The invention discloses a steel ladle sliding nozzle oil cylinder. The steel ladle sliding nozzle oil cylinder comprises a cylinder barrel, a piston, a piston rod and a plunger which are coaxial. The front end and the rear end of the cylinder barrel are blocked by a front end cover and a rear cover respectively. The piston and the plunger are in sliding connection with the inner wall of the cylinder barrel. A front cavity is formed between the piston and the front end cover. A middle cavity is formed between the piston and the plunger. A rear cavity is formed between the plunger and the rear cover. The front end of the piston rod is connected with a steel ladle nozzle mechanism, and the rear end of the piston rod penetrates through a center hole of the front end cover and is connected with the piston. A front cavity oil opening, a middle cavity oil opening and a rear cavity oil opening which correspond to the front cavity, the middle cavity and the rear cavity respectively are formed in the side wall of the cylinder barrel. The invention further provides a steel ladle nozzle control device. The composite oil cylinder integrating piston driving and plunger driving is adopted, when the piston leaks inwards, the plunger can be adopted in time to drive the piston rod, a steel ladle nozzle is reliably closed, production accidents caused when the steel ladle nozzle cannot be closed are avoided, and the safety of equipment and field workers is ensured.

Description

technical field [0001] The invention relates to an oil cylinder capable of closing the ladle nozzle even in the case of internal leakage, and a ladle nozzle control device using the oil cylinder, belonging to the technical field of metallurgical equipment. Background technique [0002] The ladle sliding nozzle control device is an important equipment for continuous casting in steelmaking plants. The opening of the ladle nozzle was originally completed by the pressing bar to drive the sliding nozzle mechanism. With the improvement of equipment automation, the ladle sliding nozzle is gradually driven by the oil cylinder. It not only improves labor productivity, but also reduces the labor intensity of workers. However, since there is no oil cylinder specially used to open the ladle sliding nozzle, the ladle sliding nozzle is driven by an ordinary oil cylinder. The disadvantage is that the ladle sliding nozzle cylinder cannot work normally after internal leakage, resulting in th...

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Problems solved by technology

However, since there is no oil cylinder specially used to open the ladle sliding nozzle, the ladle sliding nozzle is driven by an ordinary oil cylinder. The disadvantage is that the ladle sliding nozzle cylinder cannot work normally after internal leakage, resulting in the ladle nozzle being unable to open or close. If the nozzle of the ladle cannot be closed, the continuous casting equipment will be burned, and the on-site staff will be burned, resulting in a major production accident.

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