ANALYSER OF GRAIN MIXTURES Russian patent published in 2009 - IPC B07B1/00 G01N1/00 

FIELD: agriculture.

SUBSTANCE: invention relates to analysis of sorting grain mixtures. The analyser of grain mixtures consists of two parallel flat sieves installed one over the other with equal holes positioned perpendicular with their long axis of symmetry to the longitudinal axis of symmetry of the sieve. The lower sieve is installed capable of being moved longitudinally for which purpose a vertical sideboard is firmly attached to one of the butts of the lower sieve and with sideboards installed on all three sides of the upper sieve with the butt side boards being parallel to one another and equidistant. There is a movement mechanism installed in the centre of the butt sideboard of the upper sieve. It consists of a central screw installed in coaxial holes made symmetrical in the facing butt sideboards of the both sieves. The central screw is equipped with a handwheel firmly installed on the one end and behind its butt counterbore there is thread the same as in the hole of the vertical side board of the lower sieve and in the same increment that enables to use one turn of the handwheel to move the lower sieve by 0.5 mm. The other end of the central screw is installed freely in the hole of the butt sideboard of the upper sieve secured on the both ends. In addition, two guides are installed symmetrically and firmly in one butt sideboard and freely in the holes of the opposite sideboard. The analyser is also equipped with -sectioned supports whose the lower part has rolling elements installed freely and the vertical wall has rectangular openings placed in equal increments and attached firmly to the lateral surfaces of the longitudinal side boards of the upper sieves aflush with them. There are removable symmetrical lids of -shaped profile installed above and below on the longitudinal side boards that have holes on the left butts at the one above- on top, at the one below - at the bottom. There is an l-shaped door installed on the left of the lids on hinges on the axis secured in end positions and whose width on the inside is bigger than the width of the lids.

EFFECT: invention facilitates analysis of quality of grain mixtures, reduces the number of used sieves as well as time for assessment of the cleaning quality.

6 dwg