Hot-blast furnace combined grate suitable for stacking checker bricks with different structures

Abstract

The invention relates to a hot-blast furnace combined grate suitable for stacking checker bricks with different structures, and can effectively solve the problem that the checker bricks are broken due to slippage between the checker bricks and the grate. A grate body is provided with round through holes; each positioning sleeve is a T-shaped cylinders formed by sleeving a big ring at one end of a small cylinder; small cylinders are arranged in the round through holes at equal intervals; the lower end faces of big rings are arranged on the hole walls of the grate body; positioning sleeves arranged on the grate body at intervals form positioning lug bosses; the positioning lug bosses are matched with grooves on checker brick transition blocks; and the checker brick transition blocks are arranged on the grate body and closely combined with the checker bricks. By the hot-blast furnace combined grate, the accuracy of stacking the checker bricks is improved, the through hole rate of the checker bricks is improved, the checker bricks are prevented from being damaged, and the effects of improving a flow field structure and enhancing heat transfer are achieved.

Description

technical field [0001] The invention relates to a combined hot blast stove grate suitable for stacking checker bricks of different structures used in a hot blast stove regenerator of a blast furnace. Background technique [0002] The grate for the hot blast stove is a cast iron structure used to support the regenerator, and usually adopts a whole structure or a structure divided into several large blocks, on which checker bricks are placed directly. It is very easy to cause the small holes of the checker bricks to be difficult to align with the through holes of the large fire grates, resulting in a decrease in the through-hole ratio of the checker bricks. In addition, the thermal expansion coefficient of the grate is quite different from that of the checker brick, which will cause slippage between the checker brick and the grate during operation. This sliding movement cannot be realized due to the load bearing on the checker brick. This will easily cause damage to the check...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a combination furnace grate suitable for stacking checker bricks of different structures, which can effectively solve the slippage between the checker bricks and the furnace grate, resulting in grid failure. The problem of broken bricks

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