Sintering machine head and tail water curtain liquid sealing device

Abstract

The invention relates to the field of flexible liquid sealing devices for the heads and the tails of sinter machines, in particular to a water curtain type liquid sealing device for the head and the tail of a sinter machine, and aims to form a water curtain through spraying to effectively realize sealing of a sintering system. The device comprises a trolley slideway, a trolley, a bellows and a sealing water tank, wherein the trolley is slidably arranged above the trolley slideway, and the bellows is arranged under the trolley slideway; the sealing water tank is arranged beside the bellows and positioned under the trolley slideway; at least one water tank bottom water supply pipe with an upward opening is arranged at the bottom of the sealing water tank; the water tank bottom water supply pipe jets water flow to a trolley bottom beam of the trolley to form water seal. As the water seal is adopted, the water curtain type liquid sealing device is ideal in sealing effect, fundamentally avoids the sealing defects, caused by factors, such as deformation, of the traditional solid sealing baffle plate, is especially suitable for sinter machines with high sealing requirements, and has an important realistic meaning on productivity increasing and energy saving.

Description

Technical field [0001] The invention relates to the field of flexible liquid sealing devices for sintering machines, in particular to a water curtain type liquid sealing device for heads and tails of sintering machines. Background technique [0002] Due to the influence of equipment structure, manufacturing installation and process conditions, the iron ore exhaust sintering machine inevitably has an air leakage rate, which reduces the effective air volume for sintering, which in turn affects the quality and energy consumption of the sintered ore. The air leakage rate of the advanced domestic level is about 40%, and the general level is 40-60%. The advanced level abroad reduces the air leakage rate to 20-30%. The main parts of the air leakage of the sintering system are about 20% of the sealing cover plate at the head and tail of the sintering machine; about 15% of the trolley slide and slide; and the air leakage rate of other wind boxes, flues, dust collectors, and process operat...

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Problems solved by technology

However, this method is due to the material and manufacturing accuracy of the trolley and the sealing cover. At the same time, under harsh conditions such as high operating rate, high strength, high temperature, and dust, the trolley and the sealing cover are deformed, and mechanical wear occurs due to rigid contact. , the gap between the bottom beam of the trolley and the sealing cover gradually increases, and even loses the sealing effect, and it is almost impossible to control the air leakage here unless all the trolley and the sealing cover are replaced, so the machine head The tail seal has become the part with the highest air leakage and there is no reliable way to deal with it

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