| 摘要 |
PROBLEM TO BE SOLVED: To provide a spraying apparatus designed to efficiently stir and mix a plurality of kinds of fertilizers, etc., in a short time irrespective of particle diameter, shape, specific gravity, etc. SOLUTION: The spraying apparatus A is connected and supported on the rear of a tractor B with a three-point supporting mechanism 6 and designed to rotate and drive a stirring means 2 by power from the tractor B and spray a plurality of kinds of fertilizers M, etc., charged into a hopper from spraying ports 4 and 5 at the bottom of the hopper 1 while stirring and mixing the fertilizers, etc. The stirring means 2 of the spraying apparatus A is composed of a rotation main shaft 2-1 arranged in the form of a rotation bridge in the longitudinal direction of the hopper 1 assuming a nearly oblong rectangular shape when viewed in the plane and stirring blades secured and wound in the coaxial shape around the rotation main shaft 2-1. The stirring blades are composed of an inner and outer double screw structure of a large-diameter ribbon screw 2-2 and a small-diameter ribbon screw 2-3 having the mutual reversely wound helical direction and a different helical outside diameter. The helical outside diameter of the large-diameter ribbon screw 2-2 is formed into nearly the same extent as the short side width of the hopper 1. COPYRIGHT: (C)2004,JPO
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