Cavity-divided type blast furnace distributing device

Abstract

The invention discloses a cavity-divided type blast furnace distributing device. A spacer ring (113) is arranged in a box body (116) of the cavity-divided type blast furnace distributing device. The spacer ring (113) is in static sealing with the box body (116) and a box lid (101) through a sealing cushion (129). A lower sealing device (106) is arranged between the spacer ring (113) and a rotary drum (118). An upper sealing device (104) is arranged between a connection ring (107) and the box lid (101). In this way, an annular space (128) is formed in the box body (116). An upper rotary supporting bearing (108) is installed in the annular space (129). An inner ring of the upper rotary supporting bearing (108) is supported on and fixed to the spacer ring (113). Lubricating oil (128) is injected into the annular space (129). In this way, the upper rotary supporting bearing (108) is under good sealing and lubricating conditions, and the service life of the upper rotary supporting bearing (108) can be greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of the metallurgical industry, and relates to a distributor for a bellless furnace top used for charging directly into the furnace on the top of a blast furnace. Background technique [0002] In the process of blast furnace ironmaking, the top of the furnace without material bell is loaded into the furnace from the top of the furnace according to the requirements of the production process. The distributor is the most critical component of the top of the bellless furnace. It operates directly under the conditions of high gas temperature, high dust content, large pressure fluctuations and strong corrosion on the top of the furnace. Its complex structure is the most difficult equipment in the blast furnace system to maintain. It is very difficult to ensure its long-term stable operation. Once a fault occurs, the operation of the blast furnace will be seriously affected. Every time a blast furnace is replaced, ...

AI Technical Summary

Problems solved by technology

However, due to fluctuations in gas pressure at the top of the furnace, especially when the furnace condition is abnormal, the gas pressure will fluctuate violently, and when the nitrogen supply system fails, blast furnace gas will always enter the box and bring a large amount of dust. The fact is that All distributors have varying degrees of dust accumulation

The bearings and gears of Shanglai Bearing use lubricating grease for timing, fixed point, and quantitative refueling. The dust entering the box is mixed into the grease to accelerate the wear of the gears and bearings. The dust entering the bearing is difficult to remove.

The high-temperature gas enters the box, causing the bearings of the upper rotary support to expand due to heat, and the gears cannot be meshed normally. The blast furnace gas enters the box and causes corrosion to the bearings and gears.

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