GRAIN CLEANING MACHINE

FIELD: mechanical engineering, in particular, equipment used in agricultural production, flour milling industry and feed mill industry for grain cleaning and sorting. ^ SUBSTANCE: grain cleaning machine has feeding part, closed pneumatic system with cross-flow fan, pneumatic separating channel, air supplying channel and settling chamber. Feeding part has feeder with guiding chute. Inlet opening is formed in pneumatic separating channel wall. Settling chamber is communicated via air discharge channel with pneumatic separating channel outlet section. Feeding part is communicated with settling chamber via baffle window and is provided with activator, ear, sorting and sowing sieves, which are arranged opposite activator. Sieve working surface is made in the form of scociodal path. Sowing sieve is equipped with discharge devices for tails fraction and undersize fraction and ear sieve is equipped with discharge device for tails fraction. Tails fraction discharge end of sorting sieve is communicated with pneumatic separating channel. ^ EFFECT: increased quality of cleaning of grain material and improved sanitary and hygienic working conditions. ^ 1 dwg