Automatic ball-sieving device of coal grinder

• Main Author: YANYU DU
• Format: Patent
• Language: English
• Published: 03.10.2007
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The utility model relates to a coal grinding mechanism, in particular to an automatic ball sieving device of coal grinding machine, comprising a multi-hole slot-shaped lining plate which is arranged in the inner side of the end cap at the outlet of coal grinding machine and is used to select steel balls, the multi-hole slot-shaped lining plate is arranged fixedly in the inner side of the end cap at the outlet of coal grinding machine by screws and is provided with a hollow cavity which balls come out from, the main body of the ball sieving device is provided with an inner spiral tube, the inner spiral tube is provided with an inner spiral plate, a laminated spiral plate is arranged between the inner spiral tube and the outer spiral tube, the laminated spiral plate and the inner spiral plate have opposite turn directions and are intersected at the side of powder discharge elbow, a fixed type high-level slot-shaped ball collector is arranged at one side of the powder discharge elbow, the utility model has convenient, safe and reliable application, and can realize the online automatic ball sieving selection and can be popularized in the power factory widely.