Air-sweeping self-cooling device for hammer wheels and bearings of circularly-milling type vertical mill

• Main Authors: SUN HONGZHONG, SUN ZISHUN, XU SONGBAI
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2012
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; TRANSPORTING

The invention discloses an air-sweeping self-cooling device for hammer wheels and bearings of a circularly-milling type vertical mill. The hammer wheels are mounted on swing arms by the aid of hammer wheel shafts, each bearing is mounted between each hammer wheel and each corresponding hammer wheel shaft provided with the hammer wheel, and the hammer wheel shafts are hollow shafts. The air-sweeping self-cooling device for the hammer wheels and the bearings of the circularly-milling type vertical mill has the technical advantages that the hammer wheels rotate around a spindle at a constant speed along with the swing arms, and the top of each hollow hammer shaft provided with the bearing is processed to an air damper, so that vertical air flow changes the direction to flow along inner holes of the hollow hammer shafts, just as a cooling fan cools the hollow hammer shafts and the bearing, the volume of the air flow can be changed by adjusting the sizes of air damping blades, bearing portions are cooled by direct