VIBRATION MILL Russian patent published in 2018 - IPC B02C19/16 B02C17/14 

FIELD: grinding devices.

SUBSTANCE: invention relates to grinding devices, in particular multi-chamber vibrating mills with cylindrical grinding bodies, and can be used for fine grinding and homogenization of building mixtures, including pigments. Vibrating mill contains a horizontally mounted body on the support through vibration isolators with a drive unbalanced vibrator and grinding chambers, in which grinding cylindrical bodies are freely placed. Grinding bodies are made in the form of freely installed pipes and a rod in one another. Support is mounted on damping devices. Each of the vibration isolators is made on the basis of an annular conical spring, consisting of a set of successively alternating cone disks of larger and smaller diameters with radially outwardly curved edges. In this case, each of the outer and inner annular elastic conical disks is made in the form of truncated conical surfaces and comprises at least three radial grooves extending from the larger base of the truncated cone to the smaller base, each of the radial slots is ended by hole for stress relieving, and external annular resilient conical disc lateral conical surfaces coupling with internal annular resilient conical discs lateral conical surfaces is made in form of spherical segments with radius R. Spherical segments are made integral with each of discs conical surfaces and directed in opposite directions from conical surface generatrix. Lateral conical surfaces of the inner annular elastic conical disks and spherical segments are covered with a vibration damping material, and the interface surfaces of the lateral conical surfaces of the inner annular elastic conical disk with the base, made in the form of spherical segments of radius R, are covered with a friction material. Friction material is made of a composition comprising the following components, with their ratio, wt %: mixture of resole and novolaque phenol-formaldehyde in the ratio 1:(0.2–1.0) 28÷34 %, fibrous mineral filler containing glass-roving or a mixture of glass-roving and basalt fiber in the ratio 1:(0.1–1.0) 12÷19 %, graphite 7÷18 %, a friction modifier containing carbon black as a mixture with kaolin and silicon dioxide 7÷15 %, barite concentrate 20÷35 %, talc 1.5÷3.0 %.

EFFECT: in the mill, the productivity and degree of grinding are increased.

1 cl, 5 dwg