Labyrinth type sealing structure of air box of circular cooler

Abstract

The invention discloses a labyrinth type sealing structure of an air box of a circular cooler. The labyrinth type sealing structure comprises a rack, an air box, a rotary body and a sealing mechanism, wherein a track is installed on the rack; the air box is installed at the bottom of the rack, and one side of the air box is connected with an air blower; the rotary body is installed on the track of the rack, and the rotary body can rotate on the track; and the sealing mechanism is installed between the air box and the rotary body so that the rotary body can be mutually sealed relative to the air box when rotating relative to the track, the sealing mechanism comprises two groups of fish scale mechanisms which are distributed in a central symmetry mode. According to the labyrinth type sealing structure, a labyrinth type wear-resisting head is effectively attached to a reassembling frame mainly through air pressure of the air box and installation angle, and furthermore, the wear-resistant head is designed into the labyrinth structure, so that air leakage can be effectively prevented. By adopting the novel seal, the running resistance can be reduced; the wear-resistant head is made of graphite and has self-lubricating performance, the service life is greatly prolonged, meanwhile, the wear-resistant head is convenient to replace after being worn, and spare parts are low in price; the air leakage rate is greatly reduced and the power consumption is reduced; and the burning loss condition is avoided.

Description

technical field [0001] The invention relates to the technical field of annular cooler equipment, in particular to a labyrinth sealing structure of an annular cooler bellows. Background technique [0002] Ring cooler is the key equipment for pellet production, responsible for the cooling of high temperature oxidation pellets. Generally, it consists of three to four cold sections. The oxidized pellets at about 1000 degrees are cooled by the wind blown by the cooling fan until the temperature of the oxidized balls reaches about 50 degrees (that is, after passing through the four cooling sections) and then pass through the belt conveyor. Transported to the finished product warehouse. The main structure is composed of an upper cover, a rotating body and an air box. The cooling fan blows air at normal temperature into the air box. Due to the existence of wind pressure, the air at normal temperature passes through the gap of the trolley on the rotating body, and then passes throug...

AI Technical Summary

Problems solved by technology

Therefore, the equipment is cooling equipment, so the air system is the key. If the seal between the air box and the reloading frame is not good, it will directly affect the cooling effect of the oxidized pellets, resulting in red balls, burning the belt, and increasing the fan speed and increasing power consumption. , affecting pellet cost

[0003] The existing sealing structure is filled with high-temperature-resistant sealing rubber between the bellows and the 27mm gap between the reassembly frame, and the newly installed sealing rubber strip fits tightly with the reassembly frame, resulting in increased friction, which in turn drives the reassembly frame to run The current of the motor increases, and the power consumption increases; at the same time, due to the tight fit, the wear of the rubber strip is intensified. After a long time of operation, there is a gap between the rubber and the reassembly frame, and the air leakage rate increases. It needs to be adjusted again or even scrapped.

If the fit is not tight, the air leakage rate increases, which in turn leads to an increase in the speed of the blower, an increase in the current of the fan, and an increase in power consumption

Since the head of each bellows (relative to the running direction) is equipped with an air distribution plate, the leaked material of the trolley is scattered on the air distribution plate. As the leaked material continues to accumulate, it will be squeezed against the sealing rubber strip after it is full, which will be more serious. The wear of the sealing rubber strip, the accumulation of material extruding out of the bellows, affects the site environment, and increases the cleaning intensity of the post. The temperature of the oxidation ball at the material receiving port and the first cooling section of the ring cooler is as high as 1000 degrees. After the accumulation ball at the position of the air distribution plate contacts the rubber strip result in burning loss, for this reason, we propose a labyrinth seal structure for the bellows of the ring cooler

Images