DEVICE FOR GRAIN SEPARATION OF WHEAT AND RICE BY VITREOUS INDEX Russian patent published in 2020 - IPC B07B13/00 B07C5/342 

FIELD: agriculture.

SUBSTANCE: disclosed invention can be used to extract a fraction with a certain content of vitreous grains from commercial grains of wheat and rice. Device for separation of grains of wheat and rice by degree of vitreousity comprises a color sorter, enabling analysis of reflection spectra of separate seeds with an optical system and a separation control system. Optical system includes two sources of electromagnetic radiation and at least one receiver of electromagnetic radiation. LEDs or lamps are used as sources of electromagnetic radiation. Electromagnetic radiation receiver used is a photodiode, or a photoresistor, or a phototransistor, or a photoelectronic multiplier, or a charge-coupled device. Separation control system is configured to: detect electric signals from radiation receivers corresponding to intensity of radiation reflected by grains, determining the value of the optical characteristic corresponding to the glass vitreous index, based on the difference of intensities of the radiation reflected by each grain, receiver detected electromagnetic radiation in different spectral ranges. Separation control system provides grain direction into a bin for mealy grains with deviation of optical characteristic value from a predetermined control value by not less than 0.1 %, otherwise, separation control system provides grain direction into hopper for vitreous grains.

EFFECT: technical result is increased efficiency of separation of wheat and rice grains into two fractions with different value of optical characteristic corresponding to a certain level of vitreousity, as well as high degree of vitreousity of the batch of grains by enabling removal of mealy grains.

3 cl, 4 dwg, 3 tbl, 5 ex