CENTRIFUGAL MILL Russian patent published in 2019 - IPC B02C13/14 

FIELD: disintegrators and crushing devices.

SUBSTANCE: invention relates to grinders of various materials and can be used in production of construction materials. Device comprises two bodies interconnected by tangential channel, side walls of which converge in plane of symmetry of centrifugal mill at angle of 120–150°. Each body has rotor (3) which is rotatable in the direction of the corresponding outlet of the channel, on which acceleration blades (4) are fixed. In the tangential channel there is an unloading branch pipe equidistant from axes of rotation of rotors (3). Loading branch pipes in each housing for supply of ground material are located on circle arc equal to 50–280°, counting from the straight line passing through rotation centers of rotors (3) and radius equal to 1/4…3/4 of rotor radius (3) with center on vertical axis of the latter. At the lower end of each loading nozzle there is an inclined cut at angle of 45° on the side opposite to the rotation of corresponding rotor (3). Each accelerating blade (4) has a cutout corresponding to the profile of the loading pipe with providing a process gap. Each body consists of two steps, separated by a horizontal plate height (7). In top (8) stage of the body there additionally is upper disc (10) with spreading blades (11) located on one rotor (3) with accelerating blades (4). Between spreading blades (11) and upper (8) stage of the housing there fixed is an arc bar grid consisting of vertical rods. To upper (8) stage of the housing there attached is a normal branch pipe (14) located after extreme rods of the arc bar in the direction of rotation of rotor (3) and communicating with the unloading branch pipe. Tangential tap is attached to rod bar extreme rod end and communicates with loading branch pipe extending from top (8) stage to bottom (9).

EFFECT: provides increased grinding process efficiency and productivity for the finished product.

1 cl, 3 dwg