APPARATUS FOR SURFACE SPREADING OF MINERAL FERTILIZERS AND OTHER BULK MATERIALS Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: apparatus has hopper 1 and plate 3 with central opening 4 of adjustable section. Plate 3 is hermetically joined to lower cut of hopper wall by means of flexible strip 9. Unloader 5 is arranged above plate 3 and connected to hopper 1. Outer ends 12 of unloader 5 are spaced from hopper wall. Stabilizer 6 attached to lower part of unloader 5 has concentrically arranged cylindrical surfaces whose generatrices are equally spaced from outer ends 12 of unloader 5. Stabilizer 6 is spaced from plate 3 by gap h. Such construction eliminates grinding of bulk material and provides uniform distribution of bulk material over soil surface. EFFECT: increased efficiency, reduced power consumption and improved quality of distributed material. 4 dwg