Gravimetric metering device with independently suspended rotating impeller blades
The invention aims at obtaining a simplified and compact construction of a gravimetric metering device ( 1 ) for bulk products, comprising a large discharge section per activation zone (A) and transfer zone (F) for supplying the bulk product into a rotor ( 2 ) rotated in a horizontal plane, with transfer tools ( 3 ) (I,E.; impeller blades ) extending mainly in the radial direction, an emptying station (E) offset relative to the transfer zone (F), and a weighing platform (W) arranged therebetween in the peripheral direction, provided with a force measuring device ( 20 ) for determining the weight of the bulk product transported. The invention is characterized in that the transfer tools ( 3 ) are mounted so as to be uncoupled from one another in at least one degree of freedom.
1. A gravimetric metering device for bulk products, having an activation and transfer zone for supplying bulk material into a rotor rotated in a horizontal plane with transfer tools extending mainly in the radial direction, an emptying station offset relative to the transfer zone, and a bent bridge or weighing platform arranged therebetween in the direction of rotation, provided with a force measuring device for determining the weight of the bulk product transported,
wherein the transfer tools are mounted so as to be uncoupled from one another in at least one degree of freedom.
2. A metering device according to claim 1 , wherein the transfer tools are uncoupled from each other in two degrees of freedom.
3. A metering device according to claim 1 , wherein at least one bearing or joint per transfer tool is provided for uncoupling.
4. A metering device according to claim 1 , wherein a flexible element, in particular a rubber metal element is provided for the uncoupling of the transfer tools.
5. A metering device according to claim 1 , wherein a circulating discharge cone is provided above the transfer tools, said cone comprising in particular at least one rotary-driven stirrer arm.
6. A metering device according to claim 1 , wherein the transfer tools are connected to form a ring, by means of interior and/or exterior coupling elements.
7. A metering device according to claim 1 , wherein the transfer tools are limited to the outside and/or the inside by an elevation.
8. A metering device according to claim 1 , wherein the transfer tools—seen in plan view—exhibit a bent or cranked form in the radial direction.
9. A metering device according to claim 1 , wherein the transfer tools overlap at their interior and exterior perimeters and are connected by means of interior/exterior articulated brackets as coupling elements.
10. A metering device according to claim 1 , wherein a tare weighing of the emptied transfer tools is provided downstream the emptying station.