Special powder concentrator for dinas, of coal milling system

Abstract

The invention discloses a special powder concentrator for dinas, of a coal milling system. The special powder concentrator comprises a winnowing machine body, wherein the winnowing machine body comprises a winnowing chamber, a wind inlet chamber, a wind outlet chamber, a feeding chamber and a discharging chamber; the winnowing chamber is connected with the feeding chamber; the feeding chamber is provided with a feeding opening, a discharging plate, a discharging opening and a spiral conveyor; a rotating plate is arranged below the discharging opening, and is connected with a rotating motor through a rotating shaft; the wind inlet chamber is arranged on one side of the winnowing chamber, and the wind outlet chamber is arranged on the other side of the winnowing chamber; a wind distributionplate is arranged between the winnowing chamber and the wind inlet chamber; wind inlet diversion plates and wind outlet diversion plates are arranged in the winnowing chamber; the wind inlet diversionplates are located on one side of the wind distribution plate; the wind outlet diversion plates are located between the winnowing chamber and the wind outlet chamber; the discharging chamber is arranged under the winnowing chamber; a coarse material outlet is formed in the bottom of the discharging chamber; and the wind outlet chamber is connected with a fine material outlet. The special powder concentrator disclosed by the invention can dry materials, and the materials are convenient to winnow; besides, the standing time of materials in the winnowing chamber is prolonged, the winnowing effect is good, and fine screening of coarse materials and fine materials of the materials is realized.

Description

technical field [0001] The invention relates to the field of powder separator devices, in particular to a special powder separator for sand and gravel in a coal mill system. Background technique [0002] The coal mill separator is mainly used as a classification equipment in the coal powder preparation (grinding) system of the cement plant. Among them, the V-type powder separator is one of the main types of powder separators. The working principle of the V-type powder separator is: the material enters the wind separation room through the air inlet pipe with the airflow, and is selected by the air separation board in the air separator. , the direction is changed by the guide vane to form a rotating air flow, and the materials are sorted. The fine powder is discharged from the air outlet with the air flow, and the coarse powder is collected by the winnowing room, and then discharged from the bottom of the winnowing room, and then returns to the pressing roller device. Re-grin...

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Problems solved by technology

[0003] The powder separator in the prior art has the following problems when in use: 1. Because the volume of the V-type air separator is small, the residence time of the powder in the air separation chamber is relatively short, so that the screening error of the powder is relatively large. Some large particles of coarse powder are also directly discharged from the air outlet, resulting in poor screening results; 2. The drying effect of the existing powder classifier is poor, and it is difficult to effectively and quickly dry the dust

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