Sealing method of wind import and export of reduction distilling furnace and rapid sealing closure

Abstract

The invention discloses a reduction distilling furnace tuyere sealed method and a rapid sealing cover. The method is that when a tuyere of a reduction distilling furnace is sealed, a steel pipe capable of covering the tuyere is firstly fixed at the tuyere of the reduction distilling furnace, then the tuyere is plugged by an inner sealing cover, a rubber sealing ring is arranged at the port of the steel pipe, and then a gland bush is tightly pressed on the rubber sealing ring to form an airtight space between the inner sealing cover and the gland bush, so that the sealing work of the tuyere of the reduction distilling furnace is completed. With the arrangement of the steel pipe and the inner sealing cover and the rearrangement of the rubber sealing ring and the gland at the port of steel pipe, an airtight and heat insulating space is formed at the tuyere of the reduction distilling furnace, the space not only can effectively avoid the rubber sealing ring from being damaged due to over high temperature but also can effectively seal the tuyere and insulate heat. The invention has the advantages of simple construction, convenient and rapid operation, stable and reliable sealing performance, long service life, high utilization rate of electrothermal energy, low cost of operation and maintenance, etc.

Description

technical field [0001] The invention relates to a method for sealing the air inlet and outlet of a reduction distillation furnace used in the production of sponge titanium and a fast sealing cover, belonging to the technical field of sealing the air inlet and outlet of a reduction distillation furnace. Background technique [0002] At present, the final process of titanium sponge production requires the use of a reduction distillation furnace. In the reduction stage, in order to prevent the temperature of the reaction section from overheating, it is necessary to leave some air inlets and outlets on the reduction distillation furnace to reduce the temperature of this section in the form of air cooling; Vacuum to suit the vacuum requirements in the still. Therefore, the periodic frequent opening and closing of the air inlet and outlet cover is one of the operating characteristics of the reduction distillation furnace. In the prior art, more than ten air inlet and outlet cove...

AI Technical Summary

Problems solved by technology

In the prior art, more than ten air inlet and outlet covers are connected by flanges. The disadvantages of this structure are: 1) The removal and installation of a large number of covers not only increases the labor intensity of the operator, but also takes time, resulting in The extension of the production time of the process affects the production capacity; 2) In order to maintain the temperature necessary for the distillation stage, the hot reduction still that has just completed the reduction of sponge titanium must be kept warm, and the installation of the mouth cover takes a long time, so it takes a lot of money 3) The temperature of the flange seal is high, the working condition of the vacuum rubber sealing ring is harsh, and the sealing reliability is poor

Obviously, the sealing method of the air inlet and outlet of the existing reducing distillation furnace is still not ideal enough

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