Pressed folded sieves are applied for classification of large grain feed and can be used for preliminary, initial as well as for final classification of coal or other loose materials.
Light type can be used for material with solids 6-8 times bigger then mesh dimensions, medium type for material with solids 6-8 times bigger them mesh dimensions, medium type for material with solids 8-10 times bigger them mesh dimensions and heavy type for material with solids 10-12 times bigger then mesh dimensions. For medium and heavy sieves the upper limit of solids size is 350 mm. For material with solids bigger then 350 mm we suggest bars using, which are made individually for customer’s wish. Folded pressed sieves belong to the group of sieves of the plain weave.
They are produced from round wires. These sieves of heavy construction are very durable weave and smooth upper surface obtained by adequate overpressing of the weft and warp wires in the place where they meet.
These sieves must be precisely supported and fixed on the screen.
Sieves made of wires of diameter up to 6,3 mm are produced from spring steel variety I acc. to the PN – 71/M – 80057, whilst sieves of wire diameter ranging from 6,3 to 15 mm – from cold drawn round bar acc. to PN – 75/H – 93210 – grade 18 G2A.
The sieves are being delivered in plain sheets of the following dimensions:
Width up to 2000 mm; length up to 4000 mm.
|Mesh Dimension (W) [mm]||Light type||Medium type|
|Sieve designation||Wire diameter (d) [mm]||Sieve clearance %||Sieve Weight 1 m2||Sieve designation||Wire diameter (d) [mm]||Sieve clearance %||Sieve Weight 1 m2|
|20||TL 20||5,0||64||12,7||TS 20||6,3||58||19,2|
|25||TL 25||5,0||70||10,6||TS 25||6,3||64||16,1|
|50||TL 50||8,0||74||14||TS 50||10,0||69||21,2|