| 摘要 |
FIELD: dressing of coals and other mineral resources. SUBSTANCE: the unit comprises a working grate of shafts-screws with r.h. and l.h. coiling, arranged in parallel with each other at two height levels with formation of sieving gaps, a charging device. The direction of coiling of ribs of the upper level shafts-screws is opposite the direction of coiling of ribs of the lower level shafts-screws. Levers are installed on hinges above the working grate for turning in the vertical plane, a tooth is installed on the end of each lever for adjusting the angle of its arrangement relative to the shafts-screws. Each lever is furnished with a weight installed for movement and fixing along the lever, it is provided with a device for limiting the height of the layer of mineral mass flow made in the form of a plate fastened to the lever in the form of a smooth or concave sphere. The levers may be installed in several rows. EFFECT: enhanced efficiency. 5 cl |
