METHOD OF USING CENTRIFUGAL SPREADER FOR DISTRIBUTION OF FERTILIZERS (VERSIONS) Russian patent published in 2006 - IPC A01C15/00 A01C17/00 

FIELD: agriculture, in particular, distribution of fertilizers on agricultural areas.

SUBSTANCE: according to first version pertaining to centrifugal spreaders having spreading width within the range of 18-28 m, method involves providing parts of spreading spades which may be positioned relative to each other so that circumferential velocity of throwing rib of shorter spade is 22.61-26.38 m/s, preferably 24.12 m/s, and circumferential velocity of throwing rib of longer spreading spade is 32.03-35.80 m/s, preferably 34.06 m/s; for centrifugal spreaders having spreading width of 24-48 m, preferably up to 45 m, providing parts of spreading spades which may be positioned relative to each other so that circumferential velocity of throwing rib of shorter spade is 24.87-28.64 m/s, preferably 26.75 m/s, and circumferential velocity of throwing rib of longer throwing spade is 39.56-43.33 m/s, preferably 41.60 m/s. At least one flow-through slot is provided in rear wall of at least one spreading spade, which is positioned, for larger range of spreading width, so that the leading end of flow-through slot circumscribes circle at the velocity of 19.97-22.98 m/s, preferably 21.40 m/s, while the tail end of flow-through slot circumscribes circle at the velocity of 23.36-26.38 m/s, preferably 24.34 m/s. Centrifugal spreader of second version, for spreading width of 18-28 m, uses set of throwing disks with throwing spades, where circumferential velocity of throwing rib of shorter spade is 19.97-24.12 m/s, preferably 22.08 m/s, and circumferential velocity of throwing rib of longer throwing spade is 32.03-35.80 m/s, preferably 34.06 m/s. Spreader having spreading width of 24-48 m, preferably up to 45 m, uses throwing disk with spreading spades, circumferential velocity of throwing rib of shorter spade making 24.87-28.64 m/s, preferably 26.75 m/s, and that of longer spade making 39.56-43.33 m/s, preferably 41.60 m/s.

EFFECT: increased efficiency owing to adjustable fertilizer spreading width and uniform distribution of fertilizer over the whole field area.

15 cl, 5 dwg