GRINDING DEVICE Russian patent published in 2017 - IPC B02C13/14 

FIELD: machine engineering.

SUBSTANCE: grinding device contains the grinding chamber 14, having the supply side and the discharge side and it is enclosed by the wall 42. The wall 42 of the grinding chamber 41 can be formed, in particular, round, cylindrical and/or conical, expanding downward. The wall 42 has at least two parts, which are arranged consequently in the axial direction and in each of which, at least one rotor 26, 28, 30 is arranged coaxially with the grinding chamber. Each of the rotors 26, 28, 30 has the rotor shaft and the impactor tools 38, extending at least during the operation, substantially radially into the grinding chamber. The charging cone 12 is located from the feeding side above the grinding chamber 14a. Above the charging cone 12 there is the input filler 11, at that the input area of the adjustable size d is formed between the inlet filler and the charging cone. The rotors 26, 28, 30 have the opposite direction of rotation in at least two consequently positioned parts. The air draft device is connected to the grinding chamber to transfer the mixture of the particles and air created in the grinding chamber, having at least one fan rotor 31, arranged coaxially with the axis of the grinding chamber and having its own shaft 33, driven by its own drive 25.

EFFECT: possibility of the material conglomerates collision with the impactor tools at high speeds with the ability to control the material separation by the material flow effective control, in particular the very small particles flow control.

13 cl, 2 dwg