DE26118C - Separating drum for beet washing - Google Patents

Description

IMPERIAL

PATENT OFFICE.

This device, which is intended to separate the beets from the water contaminated by soil and debris when the beet is flooded, is shown in longitudinal section in FIG. 1, in cross section along xy in FIG. 3, in plan view with the jacket half removed and in FIG. 4 shown in a view from the front (failure side).

It consists essentially of a cylindrical drum A rotatable around its axis, open at the rear, the casing of which a, similar to beet washing machines, is made of perforated sheet metal or of individual wooden slats which protrude somewhat from one another. In this drum, in the interior of which the flume B opens out at the lowest point, a number (here six) of screw-shaped, perforated blades b are attached, the generators of which, as in the drum shown, either by a straight radial line or by a with the drum circumference an acute angle α forming straight line O ₁ , FIG. 5, or by a broken line b ₂ , FIG. 5, or also by a line b _z , FIG. 5, which is concave in the direction of movement of the drum . Inwardly, these blades extend to a second, smaller, sheet metal or wooden drum c arranged concentrically to α , which need not be perforated.

In this way, an annular space, divided into helical cells, is formed in the interior of the drum A , in which the beets are separated from the floating water and at the same time they are transported to the front of the drum A.

The blades b only begin in the plane '?' Ot ₁ , that is, at such a distance from the leading edge of the flume that individual beets can never be crushed or cut through between the latter and them, and they end in the plane η H ₁ in an equal number of ejection boxes, which are formed by a disc e flat on the outside, conical in the middle and provided with openings stuv, Fig. 4, for the passage of the beets, as well as the radially standing partitions h adjoining the same.

In front of the drum, at the smallest possible distance from its front edge, is the fixed wall g, which prevents the beets from falling out of the drum too early and at the upper edge ο O ₁ the discharge funnel / from which the beets either open the elevator D or directly into the washing machine.

The axis d of the cutting drum, which is mounted at the front and rear, receives its drive by means of a gear transmission; it lies as exactly as possible above the center of the flood channel and parallel to it, and at such a height that the bottom of the latter is only 1 to 2 cm above the. Inner surface of the drum shell (at the deepest point) lies. The drain C for the transport water begins under the drum and drains it to the side. ,

The device works in the following way:

While the drum A rotates slowly in the direction of the arrow, the stream of water carrying the beets pours into the interior of the same.

Claims (1)

The beets arrive in the individual divisions between the blades b, during the water α abfliefst through the openings of the casing, raised initially slightly from the blades and roll as soon as they have reached a certain height, to the same forward to the Discharge boxes. Here they are lifted up by the partitions h , roll onto the central conical part of the disc e and, as soon as they are lifted over the upper edge ο O _{1 of} the plate g , fall into the ejection funnel f. If the diameter of the cutting drum is relatively large and blades with the cross-section b _v b ₂ or /> ₃ , Fig. 5, are used, the smaller drum c can mostly be omitted, since it only prevents beets from falling out of the helical cells target; Likewise, the central conical part of the disc e can be left out if the discharge funnel f is extended backwards into the interior of the drum, as is the case with so-called lifting wheels. In this case, the fixed wall g is also dispensable, but instead the drum is partially closed at the front by a flat ring adjoining the front edge of the jacket α. In order to prevent beets from falling too early from the partitions h, it is advisable to give them a cross-section similar to that of the blades b, i.e. bt b ₂ or b ₃ , FIG. 5. If there is no intention of lifting the beets at all, the whole drum ends at the front in the plane nn _lt in which the shovels b end; she then receives no ejection boxes. Instead of cylindrical cutting drums, conical drums can also be used and this shape can be given a position inclined backwards or forwards according to its axis. Likewise, the rotation of the drum does not need to take place around an axis d mounted in journals; it can be provided with two running rings on the outside, which roll on four or more running wheels, as is the case with charcoal washers. The blades b , which form a continuous screw thread, can also be replaced by a system of only obliquely positioned blades or strips which, in the same way as the former, effect the transport of the beets forwards when the drum rotates. If the drum is given a sufficiently large inclination forwards at its lowest point, be it through a corresponding inclination of its axis or through the fact that one measures the anterior diameter larger than the rear, so can be helical or crooked Shovels or ledges in the interior of the same drop completely, in that the turnips also without they cover a helical path inside the rotating drum, whereby they finally up to the front of the same respectively. the drop boxes located there reach. Patenτ claim: In the case of beet flooding, a device for separating the beets from the flood water, consisting of a rotating drum with a perforated jacket, through which it is attached, in front of the mouth of the flume the floodwater runs off downwards, while the beets washed in either by helical or obliquely positioned blades attached to their inner circumference or ledges, or also by the fact that the drum has an incline at its lowest point owns forward, after the front ejection? disk of the same are transported. For this purpose I sheet drawings.