DEVICE FOR POWDER PREPARATION FROM POLYMER MATERIAL Russian patent published in 2008 - IPC B29B13/10 

FIELD: technological processes.

SUBSTANCE: invention is related to the field of materials grinding, namely to devices for preparation of dispersed polymer material and may be used for grinding natural and synthetic polymer materials. Device for powder preparation from polymer material includes tightening chamber and grinding chamber in the form of cylindrical casings with loading and discharging openings. Inside the tightening chamber tightening auger is installed with spiral grooves on the surface. Depth of grooves is made as gradually reducing to the discharging opening. Tightening chamber casing is installed perpendicularly to the grinding chamber casing and is hermetically connected with its discharging opening to its inlet opening that is installed in the middle part of grinding chamber. In grinding chamber two milling rotors are installed, which are made with the possibility of ground polymer material movement from grinding chamber inlet opening to its discharging nozzles. Nozzles are installed in the opposite ends of grinding chamber. Between milling rotors tightening augers are installed coaxially with spiral grooves on their surfaces. Grinding chamber is equipped with cooling facilities.

EFFECT: increase of efficiency of process of powder production from polymer material and reduction of power inputs per production unit with preservation of high quality of grinding.

6 cl, 2 dwg, 1 tbl, 5 ex