Blasting medium picking-apart device
View Patent ↗The present invention provides a blasting medium picking-apart device comprising: a hopper-shaped container having an upper opening through which a blasting medium is put in; a blade attached to a rotary shaft which is mounted along the central axis of the container, for applying a shear force to the blasting medium when the blade is rotated; a first shearing plate attached to an inner surface of the container for applying a shear force to the blasting medium between the rotating blade and the first shearing plate; an annular horizontal plane fixed to a lower opening of the container; a rotary plate which is attached to the rotary shaft, and is disposed opposite to the horizontal plane with a predetermined space therebetween; a second shearing plate attached to the rotary plate; and a rotation drive section for driving the blade and the rotary plate for rotation via the rotary shaft.
1. A blasting medium picking-apart device comprising:
a hopper-shaped container having an upper opening through which a blasting medium is put in;
at least one blade attached to a rotary shaft which is mounted along the central axis of the container, for applying a shear force to the blasting medium when the blade is rotated;
at least one first shearing plate attached to an inner surface of the container for applying a shear force to the blasting medium between the at least one rotating blade and the at least one first shearing plate;
an annular horizontal flange plate fixed to a lower opening of the container;
a rotary plate which is attached to the rotary shaft, and is disposed opposite the horizontal flange plate with a predetermined gap therebetween;
at least one second shearing plate attached to the rotary plate; and
a rotation drive section for driving the at least one blade and the rotary plate for rotation via the rotary shaft.
2. The blasting medium picking-apart device according to claim 1 , further comprising:
a gap adjustment section for adjusting the gap between the horizontal flange plate and the rotary plate; and
a control section for controlling the gap adjustment section based on a torque of the rotary shaft which is changed by the rotation drive section.
3. The blasting medium picking-apart device according to claim 2 , wherein
the rotary shaft is provided with a plurality of blades which are separated by an adjustable distance.
4. The blasting medium picking-apart device according to claim 2 , wherein
the control section detects a change of a torque of the rotary shaft based on a motor current value of the rotation drive section, and controls the gap adjustment section to adjust the gap so that the motor current value falls within a predetermined range.
5. The blasting medium picking-apart device according to claim 4 , wherein
the rotary shaft is provided with a plurality of blades which are separated by an adjustable distance.
6. The blasting medium picking-apart device according to claim 1 , wherein
the rotary shaft is provided with a plurality of blades which are separated by an adjustable distance.