METHOD OF LIQUID TREATMENT OF LEATHER AND FUR RAW MATERIALS AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2006 - IPC C14C15/00 

FIELD: light industry; leather and fur branches; series processes such as soaking process, washing, pickling, tanning and dyeing.

SUBSTANCE: proposed method includes cyclic evacuation and mixing the working solution with raw material; rate of pressure drop which is within 0.3-0.9 bar/s exceeds rate of its increase and frequency of pressure fluctuations lies in field of infra-red spectrum; mixing is performed by ordered motion of raw material in working solution. Device proposed for realization of this method is made in form of closed thermostable reservoir mounted on base and provided with casing, movable rotor, loading shaft, discharge chamber, temperature indicator, liquid chemical supply valve, drain valve and preheating and evacuation systems. Preheating system includes delivery of heat agent to movable rotor and preheating of working solution through wall of rotor; mounted on external surface of rotor are cassettes with raw material. Evacuation system is isolated from working solution by means of elastic membrane; loading shaft performs function of discharge chamber.

EFFECT: improved quality; reduced duration of process; saving of chemicals; enhanced ecological safety; cut costs.

3 cl, 3 dwg