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Seal device used for pin hole of bar grate block

A technology of sealing device and pin hole, which is applied in the field of sealing device for the pin hole of grating bars, can solve the problems of damaging the thermal conductivity of the sintered composite material, affecting the homogeneity and stability of the sintering process, and uneven ignition of the material surface of the trolley, etc., to achieve Avoid sintering edge effect, stable sintering process and simple structure

Inactive Publication Date: 2010-12-29
济南宏升益德科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Seal device used for pin hole of bar grate block
  • Seal device used for pin hole of bar grate block
  • Seal device used for pin hole of bar grate block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Sealing pins are made of one material.

[0027] The sealing pin can be made of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel, high-alloy steel, heat-resistant steel, and stainless steel. Heat-resistant steel is preferred, and the chemical composition (mass%) of heat-resistant steel is 0.05 %C, 0.15% Si, 0.35% Mn, 0.20% Cr, 0.25% Mo, the total amount of S and P is 0.035%, and the balance is iron and impurities that do not affect performance.

Embodiment 2

[0029] Sealing pins are made of one material.

[0030] The sealing plug can be made of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel, high-alloy steel, heat-resistant steel, and stainless steel. Heat-resistant steel is preferred, and the chemical composition (mass%) of heat-resistant steel is, 0.1 %C, 0.5% Si, 0.60% Mn, 2% Cr, 1% Mo, 0.6% V, 0.2% W, 0.2% Ti, 0.01% B, S and P do not exceed 0.025%, the balance is iron and does not affect performance impurities.

Embodiment 3

[0032] Sealing pins are made of one material.

[0033] The sealing pin can be made of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel, high-alloy steel, heat-resistant steel, and stainless steel. The heat-resistant steel is preferred, and the chemical composition (mass%) of the heat-resistant steel is 0.20 %C, 1.0% Si, 0.90% Mn, 3.0% Cr, 2.50% Mo, 1.8% V, 1.0% W, 0.8% Ti, 0.02% B, S and P do not exceed 0.015%, the balance is iron and does not affect performance impurities.

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PUM

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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 sealthe 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

[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 the absolute air le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/08C22C38/32C22C38/28C22C38/24C22C38/22C22C38/40C22C38/44C22C38/54C23C4/06C23C24/10C23C4/08
Inventor 李兴文宋亚男崔刚朱强孙俊生吴平张树仁丁玉国杨魁王博张建伦
Owner 济南宏升益德科技发展有限公司
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