Seal device used for pin hole of bar grate block

Abstract

The invention discloses a seal device used for a pin hole of a bar grate block. The seal device solves the problem of air leakage of the prior pin hole of the bar grate block, and has the advantages of simple structure, convenient use and effectively solving the problem of air leakage, and the like. The seal device adopts the following structure that: the device comprises a seal bolt in the pin hole of the bar grate block arranged on the side wall of a sintering machine; the seal bolt comprises three cylinders which have different diameters to form a stepped structure, and a top cylinder passes through the pin hole of the bar grate block and is connected with an external magnetic seal axle sleeve; the magnetic seal axle sleeve absorbs iron-containing powder through magnetic force to seal the pin hole of the bar grate block; the diameter of the magnetic seal axle sleeve is greater than that of the pin hole of the bar grate block, and the magnetic seal axle sleeve also plays a role in sealing the pin hole of the bar grate block; a bottom cylinder of the seal bolt is positioned inside the sintering machine; a middle cylinder is arranged between the top cylinder and the bottom cylinder; and a lug boss between the middle cylinder and the bottom cylinder seals the pin hole of the bar grate block.

Description

technical field [0001] The invention relates to a sealing device, in particular to a sealing device for the pin hole of the grating bar pressing block on the sintering machine. Background technique [0002] Wind is extremely important in sintering production, and the vertical sintering speed and output are approximately proportional to the air volume passing through the material layer. For a long time, although sinter workers have done a lot of work in reducing the sintering air leakage rate. However, the air leakage rate is still high, and the air leakage rate as high as about 50% hinders the development of sintering production technology, and reducing the sintering air leakage rate is a major problem that all sintering manufacturers urgently need to solve. [0003] At present, the air leakage at the pin hole of the briquetting block of the sintering machine is very serious, and the air leakage amount is roughly equivalent to that between the trolley and the slideway, and ...

AI Technical Summary

Problems solved by technology

[0004] The temperature of the baffle plate is relatively high during the return journey of the sintering machine body, and the composite material temperature is far lower than the temperature of the baffle plate. After the car body is loaded, the composite material exchanges heat with the baffle plate before ignition, resulting in the evaporation of the composite material water at the edge of the trolley. , forming a certain depth of dry material layer, resulting in uneven ignition of the trolley material surface

After the trolley enters the sintering bellows area, due to a large amount of air leakage from the pins and pin holes, the hot air in the heat preservation section enters the composite material at the lower part of the trolley for heat exchange, and the evaporation of water destroys the thermal conductivity of the sintered composite material, eventually causing the sintering edge effect, affecting the homogeneity and stability of the sintering process

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