APPARATUS FOR RECOVERING FREE-RUNNING PROPERTIES OF COMPACTED BULK MATERIALS Russian patent published in 2003 - IPC

FIELD: agricultural equipment used in feed production. SUBSTANCE: apparatus has cylindrical casing and charging vessel positioned in axially aligned relationship with respect to casing central part. Concentric rings are located coaxially inside casing around charging vessel to divide casing cavity into number of concentric annular chambers. Gaps gradually reducing toward casing outer wall are defined between casing bottom and lower edges of charging vessel wall, concentric rings and casing outer wall. Rotary disk is positioned under casing bottom and connected to drive. Rippers made in the form of knives with h-shaped section are joined to rotary disk and arranged in said gaps. Each of knives has large stepped plank, small plank and connecting plank. Steps of large plank and small steps of knives are expanding in plan from casing center toward its periphery and are provided with cutting face, whose convexity is oriented in direction of rotation of disk. Small planks of knives are arranged in the same direction in front of their large planks. Connecting planks of knives are arranged in penultimate annular chamber in direction extending from central part of casing toward periphery thereof. Maximal height steps of large planks of knives are positioned in charging vessel and other steps are arranged in different annular chambers. Height of each step of large planks does not exceed related gap. Minimal height steps of large planks and small planks of knives are extending outside the casing through gap between lower edge of its outer wall and bottom and connected to rotary disk. Annular chambers are separated from one another by radial partitions, which are arranged so as to define respective gaps between their lower edges and casing bottom. EFFECT: increased efficiency and quality of mellowing of compacted bulk product, provision for obtaining ready product with ground particles of predetermined size, and reduced power consumption. 2 cl, 2 dwg