DISTRIBUTION HEAD OF PNEUMATIC SOWING MACHINE INTENDED FOR SOWING LOOSE MATERIALS Russian patent published in 2009 - IPC A01C15/04 

FIELD: agricultural industry; mechanics.

SUBSTANCE: distribution head consists of an inlet pipeline, a distributor with discharge connection pipes, a cover, and a guide. The latter is made in the form of a cone the surface of which is formed by rotation of generator in the form of arc of circle about the axis of inlet pipeline of distributor. Arc of circle is equal to π/2 radian of the inlet pipeline radius. Conical surface of the guide is provided with radial rounded grooves. Cavities of the grooves located below cone base smoothly adjoin the plane of the cover internal surface. On the distributor cover there installed is an air vibrator. The latter consists of an air-distributing chamber with an annular channel, a perforated baffle plate with an air-permeable bottom, and a connection pipe. In annular channel there freely installed is at least one ball. Axis of the connection pipe axis is located in a horizontal plane crossing the ball centre. In annular channel cavity, on the side opposite to compressed-air distributing connection pipe, on its external wall there fixed is a wedge. Top of the wedge faces the connection pipe, and the length of the side which is the first to comprise the top, in the movement direction, is bigger than the other one. Internal channel wall in the zone of the wedge is bent in the direction of the connection pipe. At that cross section of the channel in same zone is maintained for ball to pass it. The cover located in the zone of cone base of the air flow guide is perforated.

EFFECT: improving uniform distribution of seeds with different mechanical-and-physical properties.

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