Water-cooled air tight box combination sealing device for blast furnace iron making distributor

Abstract

The invention relates to a water-cooled air tight box combination sealing device for a blast furnace iron making distributor, and belongs to the technical field of sealing devices. The water-cooled air tight box combination sealing device comprises a sealing ring (1), a first flexible graphite packing (2), a second flexible graphite packing (3), a stuffing box (4), a metal clad gasket (5), a thirdflexible graphite packing (6), a central throat pipe (7), a three-section pressing plate (8), a trunnion rotating sleeve (9), a three-way washer (10), a first bolt (11), a second bolt (12), and a third bolt (13). The water-cooled air tight box combination sealing device for the blast furnace iron making distributor has the advantages that seal of toxic furnace gas with high temperature and high pressure and high dust content in a wide temperature fluctuation range is solved, blast furnace gas leaked during rotating movement of the trunnion rotating sleeve of a distributing device is sealed inthree stages, the sealing effect is good, and great convenience is brought to design of a driving device of the distributor. The combination sealing device has good maintenance, disassembly and enhanced sealing effect, and provides a good installation method at the same time.

Description

technical field [0001] The invention relates to the technical field of sealing devices, in particular to a combined structure and installation method of a pre-labyrinth seal, a stuffing seal, a grinding surface seal, and an extrusion type seal. Background technique [0002] The uppermost part of the ironmaking blast furnace is the furnace throat cone section, on which the furnace roof steel ring (also called furnace roof flange) is welded, and the water-cooled airtight box is installed on the furnace roof steel ring. The two are connected by bolts and sealed with metal gaskets. The water-cooled airtight box is located at the bottom of the charging equipment on the top of the blast furnace, and is directly affected by the heat radiation of the blast furnace. Under normal circumstances, the temperature of the top of the furnace is about 200-350°C, and it can reach 600°C or even higher under an accident state. In order to protect the equipment And to make it work normally, a h...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a combined sealing device for a water-cooled airtight box of a blast furnace ironmaking distributor, which solves the problem that the use of a single rotary seal on the trunnion sleeve has restrictions on the sealing installation method and installation space, and the sealing effect cannot be optimal. It brings inconvenience to the design of the transmission device and other problems, forming a combined sealing structure and facilitating installation

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