Automatic ball screening coal mill

• Main Author: YANYU,WU DU
• Format: Patent
• Language: English
• Published: 21.11.2007
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; TRANSPORTING

An automatic screen ball coal grinding mill, belonging to the grinding technology field, used for resolving the failure steel ball automatic filtering problem of the coal grinding mill. The utility model comprises a rolling cylinder, a rotating driving device and a supporting seat. The outlet end cover of the rolling cylinder is provided with an inner spiral pipe, and the inner spiral pipe is provided with another inner spiral pipe after improving, the spiral hooping spiral direction of the two inner spiral pipes are opposite, the spiral hoopings of the outer pipe surface of the supplementary inner spiral pipe and the primary inner spiral pipe form a plurality of spiral channels, the wearing lining tile on the outlet cover is a trapezoid cross section, and the trapezoid top surface are arranged with a plurality of leaking holes connected with the spiral channels. The utility model can realize the failure steel ball operating on line automatic filtering, can reduce the operating weight because the failure steel ball is filtered timely, to reduce the operating time and decrease the power consumption and operating wearing, the proposal is skillfully constructed and creative, low cost and high efficiency. The utility model is very easy to be adopted on the existing coal grinding mill, and suitable to be used as a cylinder type coal grinding mill in the electric power plant operation.