METHOD OF CHANGING SIZE OF SCREENING OPENINGS OF LOOSE MATERIALS SIZER AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC B07B1/16 

FIELD: technological processes.

SUBSTANCE: method of changing size of sizer screening openings, which are formed by discs installed in staggered rows with intermediate elements between them on driven parallel shafts, at which the distance between neighbouring shafts discs is changed. The distance between the discs of neighbouring shafts discs pairs is changed by means of axial shift of one shaft discs in every pair with maintenance of mutual position of discs in shafts with further fixing of shifted discs. The method is executed on sizer of loose materials, which is equipped with external supports, and frame sides are made with openings. In every pair of neighbouring shafts one shaft is installed in external supports, which are fixed to sides with location of its end intermediate elements in openings of sides. Sets of discs and intermediate elements on shafts, which are installed in external supports, are installed with the possibility of axial displacement and fixation of their position. Shafts with axially movable sets of discs and intermediate elements have in the ends threads with nuts for fixation of sets position on these shafts.

EFFECT: increases efficiency of loose material screening.

3 cl, 3 dwg