Studies on a Shaking Separator (II)
Separating Capacities Related to Unbalanced Weights and Static Displacements of Rubber Springs
1982 Volume 43 Issue 4 Pages 559-566
Details
1982 Volume 43 Issue 4 Pages 559-566
The effects of unbalanced weights and the static displacements of rubber springs on the separating capacities were studied using a shaking separator.
The ratio of unbalanced weights was the ratio of the inertia force of attached unbalanced weights to that of separating decks in the direction of vibration. The ratio of unbalanced weights used was in the range of 0 to 1.5 and the static displacement of rubber springs used was in the range of 0 to 7mm. The separating capacities were represented by recoveries, Newton's efficiencies and tangential angles of the brown rice recovery curve.
The main results were as follows:
1) When the unbalanced weights were attached at the position of 180 degrees, the recoveries of brown rices, tangential angles of brown rice recovery curve and Newton's efficiencies gradually increased with the increase of the ratio of unbalanced weights.
In general, there is a tendency that the increase of the ratio of unbalanced weights gives the increase of inertia force acting on brown rices, which are resulted in the movement of brown rices toward the upper part of the discharge end. Consequently, the distribution of grains in the discharge end was the higher in the upper part and the lower in the lower part.
2) The recoveries of brown rice and Newton's efficiencies when the unbalanced weight was attached at 90 and 180 degrees was larger than those in the case of 0 and 270 degrees.
3) It is clear that the static displacements of rubber springs has very little effect on the separating capacities when the displacements are less than 3mm or thereabout.
4) The ratio of the unbalanced weight, the attached position and the static displacement of rubber springs might have considerable effects on separating capacity.
5) It is clear that the available conditions of the unbalanced weight and the static displacement of rubber springs are: about 0.6 to 1.0 in the ratio unbalanced weight, about 180 degrees in the attached position and within about 3mm in the static displacement of rubber springs.
