Interlocking device applied to raw coal slag discharging of coal mill

Abstract

The invention discloses an interlocking device applied to raw coal slag discharging of a coal mill. The interlocking device comprises a coal slag channel and a coal slag box which are arranged on the inner side of a shell of the coal mill. A coal slag passageway opening communicating with the coal slag box is formed in the coal slag channel. A coal slag channel flashboard is arranged at the coal slag passageway opening. A slag discharging device body is arranged on the outer side of the shell of the coal mill. The slag discharging device body comprises a supporting frame fixed to the shell of the coal mill. A screw rod is arranged in the supporting frame. One end of the screw rod is connected with the coal slag channel flashboard. The other end of the screw rod is matched with a hand wheel drive mechanism in a threaded manner. A first wire rope pulley block is arranged below the supporting frame. A second wire rope pulley block is arranged below the screw rod. A coal slag sealing door is arranged at a coal slag box outlet. A third wire rope pulley block is arranged on the upper portion of the coal slag sealing door. The two ends of a wire rope are wound around the second wire rope pulley block and the third wire rope pulley block. The middle of the wire rope is wound around the first wire rope pulley block. According to the interlocking device, interlocking of a coal slag inlet and the coal slag box outlet is achieved, the situation that air enters the coal mill, and spontaneous combustion of pulverized coal is caused is avoided, and operating safety of the coal mill is improved.

Description

technical field [0001] The invention relates to an interlocking device applied to raw coal slag discharge of a coal mill. Background technique [0002] The raw coal slag discharge device of the coal mill mainly has two structural modes: one kind of slag discharge device does not have a cinder channel gate, but only a cinder box and a cinder sealing door. The weight of the cinder box and the pressure difference between the inside and outside of the cinder box are used to control the opening and closing of the cinder sealing door; although the other slag discharge device is equipped with a cinder channel gate and a cinder sealing door, the cinder inlet and the cinder box outlet are not interlocked. . [0003] Therefore, during the slagging process of the raw coal slagging devices of the above two structures, since the air outside the coal mill easily enters the inside of the coal mill through the slagging box when the raw coal slagging is discharged, the oxygen content inside...

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Problems solved by technology

[0003] Therefore, during the slagging process of the raw coal slagging devices of the above two structures, since the air outside the coal mill easily enters the inside of the coal mill through the slagging box when the raw coal slagging is discharged, the oxygen content inside the coal mill is too high , prone to spontaneous combustion of pulverized coal

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