| 摘要 |
A machine for applying mineral fertilizers comprises a frame with a device for connecting thereof with a mounting system of a tractor and whereon a tank made as a combination of a four-angle prism and two truncated pyramids arranged by a lesser base thereof downwards which are bottoms thereof equipped with regulating shutters for dosed fertilizer delivery is fixed. Under the tank scattering disks are arranged, those are kinematically connected to a rotary actuator mechanism, for example, a hydraulic motor or a pinion gear kinematically connected to a rear power take-off of the tractor. On each disk blades are fixed by two, each of which has the length corresponding to the diameter of the disk and consists of two functional parts, in particular of a accelerating one and a gripping one. The gripping part is arranged close to the centre of the disk and has in the plane a shape of a logarithmic spiral of a variable height increasing according to the length of a plate as it remotes from the centre of the disk, arranged vertically and has a bent of the upper edge in the direction of rotation of the disk. The boost parts of the blades are made with an incline varying according to length thereof from the vertical plane and increasing towards the periphery of the disk, and diametrically opposed blades on each of the disks have an opposite incline from the vertical plane.
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