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A technology of sealing device and pin hole, which is applied in the field of sealing device for the pin hole of grate bar briquetting, can solve the problems of destroying the thermal conductivity of sintered composite materials, 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: 2009-11-04
济南宏升益德科技发展有限公司
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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
Method used
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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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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 ...
Claims
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Application Information
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