SE442174B - Plate sieve - Google Patents

Abstract

A plate sieve comprised of two parallel frame parts (1), supporting the plate axles (3), the number of axles and mutual distance can be varied through their storage boxes (6) being able to be fixed in differed desired positions along the frame parts (1). The plate sieves (2) are removable as well as fixable onto the shoulders of the sieve (3), and their mutual distance can be varied by means of distance rings (4). Through this the sieve's sifting properties can be varied according to need, and it is simple to change defective parts, etc. Through placing a dividing wall between two adjoining plate shoulders one can also take out different fractions from the same sieve at the same time. The plate shoulders (3) are preferably connected to a common main drive shaft (8) of the splice type, which enables connection of the plate axels in arbitrary positions, e.g. by means of angle or cog gears (7).<IMAGE>

Claims (7)

3102918-3 2 CLAIMS i. Disc screen comprising a stand with two frame parts (i), which support a plurality of parallel, rotatable disc shafts (3), each of which in turn supports a plurality of spaced-apart screen discs (2), the screen discs being so arranged in that they engage in the spaces between the sieve discs on an adjacent disc shaft, characterized in that the disc shafts (3) are mounted for rotation in bearing boxes (6), that the frame parts (1) are provided with longitudinal grooves, along which the bearing boxes (6) are displaceable and can be fastened in arbitrary positions, that each disc shaft (3) is connected to a common main drive shaft (8) via a gear device (7), and that the gear devices are arranged to be able to be coupled to the main drive shaft (8) in desired positions along this, corresponding to the selected location of the disc shafts. Disc sieve according to Claim 1, characterized in that the main drive shaft (3) is of the spline type, the gear devices (7) preferably being of the angular gear, gear or the like type. Disc screen according to claim 1 or 2, characterized in that the discs (2) have a peripheral pattern, and that the disc shafts (3) have polygonal, e.g. square or hexagonal, cross-sectional shape, which enables quick and easy application of the sieve discs (2) and displaceability of the peripheral pattern on the discs. Disc screen according to one of Claims 1 to 3, characterized by a partition wall (9) arranged between two disc shafts (3), which enables extraction of different fractions on either side of the partition wall. Disc screen according to claim 11, characterized in that the upper edge of the partition wall (9) is arranged at most 10% lower than the diameter of the discs. Disc screen according to one of the preceding claims, characterized in that the last disc shaft is arranged to be rotated at a significantly higher speed than the other disc shafts (6) in order thereby to serve as a sling for throwing out unacceptable material. Disc sieve according to one of the preceding claims, characterized in that the sieve discs (2) are detachably arranged on the respective disc shaft (3), and that the distance between adjacent sieve discs on the same shaft can be varied by means of spacer rings (4) insertable between the sieve discs. "gtrrryål Newport ßng-g-š 24-;., '.; ,, ¿.. <'.”