DE451390C - Milling and dissolving machine for pre-crushed grain - Google Patents

Description

The invention relates to a grinding and dissolving machine for pre-ground grain and relates in particular to such machines which consist of two with respect to one another rotatable disks exist, which with a ring-shaped interlocking impact and Pressure hulls are provided. This is the case with the known grinding and dissolving machines Type is due to the arrangement and training of the impact and pressure bodies selected there there is a danger that this will have an excessively shattering effect on the Endosperm enveloping shell is exercised, so that this is partially cut and is torn and ground so finely that it gets under the flour and so worsens one Influence on the texture, especially on the color of the flour. To eliminate these disadvantages, there is Novelty of the invention is that the impact and pressure body partly as solid pins, partly than loosely rotatably mounted on fixed pins and provided with longitudinal grooves or roughening Roles are formed. These latter roles can be the one passing between them Give in well due to their loosely rotatable mounting and follow its movement to a sufficient extent, so that they grind as a result of their longitudinal grooves or roughening, but not a zer can have a disruptive effect on the shell. On the one hand, it becomes the lockexe Endosperm completely detached from the shell and mainly transformed into semolina, while, on the other hand, the more resistant shell itself does not suffer any significant destruction by the grooved or roughened rollers. This effect of the loosely rotatable Rolling is supplemented by the fixed pins in such a way that it removes the endosperm loosened from the shells by the rollers completely shatter, so that the mutually supportive interaction from loose rolls and fixed pins a practically complete extraction of one as possible bran-free flour is obtained.

The subject of the invention is shown in the drawing in an exemplary embodiment illustrated.

Fig.r is a vertical section through the working disks of the machine.

The left half of Fig. 2 is an interior view of a quadrant of one disk and in the right half an interior view of a quadrant of the other disk.

Fig. 3 illustrates "on a larger scale a detail of the working disks in section.

Fig. 4 shows another detail in view.

The disk 1 is through the hollow shaft 2 and the disk 3 through the shaft 4 of a drive of a suitable type rotated so that both discs at high speed circulate in the opposite direction. The material to be ground is fed in by means of a fixed on the shaft 4 worm 5 within the hollow shaft 2 in the between the space provided between the two discs.

Both discs are provided on their inner work surface with concentrically interlocking impact and pressure bodies in the form of pins 6 and rollers 7, which are arranged in a wreath. The individual rings have a certain distance from one another in the radial direction, which can expediently decrease from the center to the circumference of the disks in order to increase the effect and, for example, about ι mm in the middle and about ¹ ^ ^{mm on the circumference}

Claims (3)

both for the rollers [and for the pins. The distance between the \ free ends or end faces of pins and rollers of the opposite disc wall is approximately V ₄ mm. The two types of impact body alternate in groups from the center to the circumference of the discs. The pins 6 are firmly seated and are round and ίο smooth. The rollers 7 are loosely rotatable arranged as well as roughened or fluted. The attachment of the impact body to the disks ι and 3 can be done directly or done by ring pieces 8, which carry the impact body and on the inner surfaces the discs 1 and 3 are attached. The width of the space also expediently increases between the working surfaces from the center to the circumference of the discs, either gradually or conically or gradually, e.g. B. with the mediation of the fastening rings 8, as illustrated in FIG. The disks 1 and 3 can also be on the outer edge of their inner surface Brush rings 9 are equipped. The way it works is as follows: The ground material fed in by the screw 5 passes between the two when it exits in the opposite sense of rotation rotating discs 1 and 3 and is now due to the Centrifugal force passed between the pin and roller cage to the outside. Here the grist becomes in quick succession to the various pressure and impact moments generated by the pins and rollers exposed, whereby the structure of the endosperm is detached from the tough shell and completely destroyed, namely mainly to semolina. A breaking moment that is damaging to the shell, like this is the case with previous working methods, is also the case with going through the rollers 7 excluded, since these are in both directions around their own Can rotate the axis loosely. There is thus only one pressing by pressure and impact, with the possible roughening or corrugation of the rollers with this pressure at the same time a shift in the structure of the endosperm is caused without, however, exposing the shells to any significant destruction. So the so-called tearing and cutting torque is not used, as is the case with the previously common grinding processes, but rather it is resolved by the 'repeated passage between roles and Pins brought about pressure and impact effect, which may be caused by the Corrugation or roughening of the loosely rotatable rollers is still supported. Through the brush rings 9, the brushes of which are expediently led past one another so far that the same are just barely at the outermost tips touch, then brushing off the semolina and Flour parts causes. The loosened semolina and flour parts are in the usual way grind to flour. Instead of rotating both disks 1 and 3 in opposite directions, you can one of these disks is also fixed and only revolve around the other. It can be both Discs are rotated in the same sense, but at different speeds. The speed of rotation and the distance between the discs, the mutual distance between the Pins and rolls as well as the pin and roll rings and the number of pins and Role groups are based on the respective circumstances and can be changed by appropriate Control of the drive, adjustment of the discs and replacement of the rollers and Pins or ring pieces 8 are changed. In the case at hand, there are two groups of RoI rings and three groups of pin wreaths are shown, but a larger number of groups are usually used will. P Λ T K N T Λ N S 1 * R Ü C H E: ι. Of two rotatable with respect to each other, with interlocking in a ring Existing grinding and dissolving machines with disks provided with impact and pressure bodies for pre-crushed grain, characterized in that the impact and pressure bodies are partly as fixed pins, partly than loosely rotatably mounted on fixed pins and with longitudinal grooves or roughening provided rollers (7) are formed. 2. Machine according to claim 1, characterized in that the roller rings and the pin rings in the radial direction in groups of at least two similar Wreaths are arranged alternately. 3. Machine according to claim 1, characterized in that the outer edge a brush ring each on both inner surfaces of the disc (9) is arranged. 1 sheet of drawings.