MILL FOR GRINDING OF MATERIALS OF DIFFERENT HARDNESS AND GRAIN SIZE

摘要

The mill for grinding of materials of different hardness and grain size comprises drives (8, 23) and the body (4), equipped with the hopper (5) and the discharge hopper (6), accommodating the main grinding roller (1), seated in a rotating manner and driven by the main drive (8), equipped with the replaceable abrasion-resistant tire and from both sides fitted with guide rings along the circumference, overlapping its diameter, arranged in a manner to prevent ground stock leakage from the grinding slot. In addition, at least three smaller grinding runners (2, 3, 33, are accommodated in the body (4) of the mill, in a rotating and sliding manner, whose axes are parallel to the axis of the main grinding roller (1), arranged in the direction of its rotation along its circumference between the hopper (5) and the discharge hopper 6. All grinding runners (2, 3, 3') are equipped with compression devices (7) providing their thrust to the main grinding roller (1) and the first grinding runner (2) is fitted with its own drive by means of extended ends of its shaft (9), protruding from bearing houses (11), where the driven shaft (9) is seated in antifriction bearings (12). Bearing houses (11) of grinding runners (2, 3, 3') are fitted with guide grooves (13), arranged to fit into the guide in sidewalls of the body (4) of the mill, whereas said guide grooves (13) are fitted with lubrication channels (16) and lined along their circumference with the sliding plates (14) with lubrication grooves (15), whereas bearing houses (11) of the first grinding runner (2) are coupled by the crossbeam (18), to which is leaned the push rod (17) of compression devices (7) via axial ball bearings (19).