A dynamic sealing device for a sintering ring cooler

Abstract

The invention discloses a dynamic sealing device for a sintered ring cooling machine trolley, comprising a trolley, a track and an air box and being characterized in that a bracket is arranged at the outer side of a baffle at the lower part of the trolley, and the upper end of a rubber belt is fixed together with the bracket through a bolt. The rubber belt provided by the invention falls on the inner side of the baffle of the air box and clings to the inner side of the baffle of the air box by means of positive pressure formed by a high-pressure blower, therefore, the sealing effect is good, the sintering ore cooling effect is ensured, the hot air quantity is increased, and the waste heat generating capacity is improved. The dynamic sealing device is simple in maintenance due to no need of arranging two sets of sealing parts on a ring cooling machine; and in addition, the temperature resistant rubber belt, and particularly a waste and old high temperature resistant conveying belt is selected instead of an expensive fluorine rubber plate, therefore, the dynamic sealing device is low in manufacturing cost, long in service life and capable of reducing replacing and maintaining workloads.

Description

technical field [0001] The invention relates to a sealing technology for a sintering ring cooler, in particular to a dynamic sealing device for a sintering ring cooler. Background technique [0002] After the sinter is crushed by a single roller, it directly enters the inlet of the sinter ring cooler. The temperature of the sinter is 450°C to 800°C. It needs to be further cooled by the sinter ring cooler to below 150°C before it can be transported to the blast furnace silo by a belt. In order to effectively cool the sinter, the seal between the lower baffles on both sides of the sintering ring cooler trolley and the bellows baffles is made of fluorine rubber plates (see figure 1 Mark 4), the fluorine rubber plate can withstand high temperature of about 200 ℃, and can basically meet the sealing requirements. With the further advancement of my country's energy saving, emission reduction and environmental protection work, some sintering plants have successively added flue gas ...

AI Technical Summary

Problems solved by technology

Under this condition, during the operation of the equipment, the fluorine rubber plate originally installed under the bellows baffle and trolley baffle is prone to aging, cracking and falling off under high temperature conditions, causing part of the air volume to escape from the gap between the trolley and the bellows, sealing The effect is greatly reduced. On the one hand, the insufficient cooling air volume affects the cooling effect of the sintered ore. On the other hand, the waste heat power generation device is also due to the air leakage of the ring cooler, resulting in a reduction in power generation. In addition, the fine particles of the sintered ore are also blown out, causing equipment Dust pollution around

In addition, the fluorine rubber plate fixed under the bellows baffle and the trolley baffle is frequently damaged, which increases the maintenance cost and prolongs the maintenance time

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