DE393186C - Mill with vertical stones - Google Patents

Description

The invention relates to a mill with three vertical grinding stones, wherein the middle stone is the fixed one.

The already known mills with vertical grinding stones all have the disadvantage that the millstones are pressed together in order to produce a good mill product must so that they have a large power consumption. This pressing against one another (axial pressure) is in the present invention by the special design of the adjustment device andl as a result of more uniform Regrind distribution completely canceled. Therefore, only the power is needed that this Grinding costs.

The solid center stone used in the present invention is for the inlet of the Grist formed, in such a way that the inlet opening from the upper vertical radius merges into a central bore leading to both outer surfaces, so that the Grist simultaneously after both grinding surfaces

of the solid stone, where it emerges through the simultaneous and even setting of the two runner stones is under the same pressure.

The drawing shows the mill in section. The solid stone is in the middle, the runner stones on both sides. At the center stone the filling opening b can be seen, through which the fastening bolts at the same time

ίο go through for the stone. To support the even distribution of the ground material, two spiral screws h are installed on the right and left, which at the same time have the purpose of pushing the stones off the center stone when they are disassembled. The adjusting device of the stones for the degree of fineness of the ground material consists of a hollow shaft a, which carries the two rotor stones in a slidable manner and has collar rings on both ends. On the adjusting side, a handwheel with a screw thread, which is screwed into a sliding nut thread, is attached to the hollow shaft. On both sides, on the handwheel and on the

The nut thread, thrust ball bearings are built in. That. The thrust bearing in the handwheel lies against a collar ring of the hollow shaft; the collar of the other end of the hollow shaft holds the right-hand rotor block against

exercise. The thrust bearing on the nut thread lies against the mill hoe of the left runner stone. If the handwheel thread is unscrewed from the sliding nut thread, the distance between the two thrust bearings is increased; as a result, by means of the hollow shaft, the right-hand traveler stone is pulled up to the center stone, while the left-hand traveler stone is pushed towards it. As a result, the worm spirals h located in the central bore of the central stone are correspondingly compressed, which then push off the rotor stones again when the handwheel with the nut thread is turned into one another, whereby the distance between the two pressure ball bearings is reduced.

Claims (1)

Patent claim: Mill with vertical solid stone and one to each of the two Runners attached to the sides, which face the solid stone at the same time and are evenly adjustable, characterized in that in the middle solid stone one in the direction of the upper vertical radius extending filling opening is available, which in a after both outer surfaces leading to the central bore merges, so that the ground material simultaneously after both grinding surfaces of the solid stone emerges, where it emerges as a result of the simultaneous adjustment of the two Runner is under the same pressure.