DE70418C - Mixing machine for regrind - Google Patents

Description

IMPERIAL

PATENTAM

The present machine for mixing all types of regrind is shown in FIG. 1 in longitudinal section and in Fig. 2 in outline, with the lid open. '·

The device consists of a stationary cylindrical vessel or silo A with a conical bottom B which merges into the outlet D and in which a hollow drum C provided with openings by cutting and bending the jacket rotates. This drum C is mounted on a shaft F and is rotated by the same from the disk F ^1. Above the funnel-shaped base B of the vessel A , a second base E is arranged parallel or almost parallel to the former, which is perforated at B ¹ and B ^{2 in the manner illustrated in FIG.} The silo A is closed by a cover J , which can be provided with a special inlet or opened in a suitable manner for the purpose of adding the ground material to be mixed.

Without the bottom E , after the powdery substances to be mixed have been filled into the silo A in any order and the drum C has been set in rotation, the machine works in such a way that the cut-out and bent-up shell parts of the drum C , which act like knives, from every height Cut out parts of the ground material and convey them mixed with one another through the drum C into the outlet D. After a short time, however, this conveyance ceases, since only the parts of the mixed material lying close to the drum C are gripped, but the remaining part remains in the form of a round chimney.

In order to prevent this and to ensure that the machine continues to work uninterrupted, the above-mentioned floor E is attached. This floor allows the material to be mixed to enter the space between B and E only through the two lateral recesses B ¹ and B ² .

If the powdery substances were of greater stability than they actually are, the space between the two floors would remain completely empty; But since the flour, despite its sluggish ability to slide, partially fills this space when it is continuously and partially removed by the drum C, it is not possible for the flour that falls, since the particularly wide passages in the drum C ensure rapid removal at this point to close tightly over the floor B.

Through the second base E cut out at B ¹ and B ² , the whole mass of the mixed material is divided into two opposite columns, one of which (the one on base B ) is discharged through the lower part of the drum C more quickly and thus more is, as from the other, standing on the ground E. As a result, the masses slide more quickly with this first column than with the second; there is a different movement in the masses of the material to be mixed, and the consequence of this is that to the same extent that parts of the material to be mixed are discharged through the drum C, a slipping

Claims (2)

of the rest of the mass takes place downwards and towards the middle of the silo, so that new parts of the mix can be continuously caught by the drum. . In order to maintain and increase this difference in the speed of the two columns of the mixed material through the entire machine, it is expedient for large systems above the floor E to use further "such floors EE" ... at certain intervals and parallel to the same Of course, in order not to cause an opposite effect, they must be exactly above E and have to have the same recesses B 'and B2. So that there is no more dead space in the machine than is absolutely necessary under the floor E, these floors are E' E ". ... provided with openings G on the surrounding space A, the size of which depends on the size of the machine. This at the same time has the effect that the. The upper masses increase the pushing movement towards the middle of the silo by their pressure on the lower layers. As a result of the different speeds at which the two columns of the mix are lowered, a strong friction is generated on the surfaces where they touch, which necessarily turns into a pulling force downwards and in connection with the inclination of the floors after the Drum C continuously feeds the material to be mixed under pressure to the latter, so that it penetrates it forcefully. As a result of the pressure exerted by the upper layers on the lower layers, these press themselves more strongly against the drum C than the latter; therefore, if the openings in the drum were everywhere the same, larger quantities would be carried away by the lower masses than by the upper. In order to prevent uneven mixing of the substances resulting therefrom and at the same time to compensate for the additional consumption under the base E, the openings in the drum C above the base E are expediently narrow and steadily widen upwards. the more the pressure of the masses diminishes. In this way there should always be a uniform entry from all layers of the material to be mixed; aims to be. . In the case of the present machine, the mix is fed into the silo without any choice and without having to sort it beforehand, even while the machine is in progress. The order in which the quantities to be mixed are added is completely irrelevant, and the action of the machine is exactly the same, whether equal or unequal parts of the mixture are poured one after the other or through one another. The entire height of the drum C grips the adjacent mixed material uniformly everywhere, so that it mixes in the desired proportion as it slides down. Pa τ ε nt claims: 1. A mixer for regrind, consisting of from a standing container in which one or more funnel-shaped, Intermediate shelf provided with perforations divides the grist into several Columns resting on different bases are dismantled and therefore with different ones . Speed through a rotating, perforated hollow drum in the axis of the container Will get removed. 2. When in claim i. marked · :. Mixing machine the execution of the hollow ■ drum (C) in such a way that the openings intended for receiving the material to be mixed are formed by cutting and bending the jacket. be made tighter from top to bottom according to the pressure conditions. For this purpose ι sheet of drawings.