Foods and beverages: apparatus – Means to treat food – By applying fluid
Patent
1989-03-20
1991-08-06
Simone, Timothy F.
Foods and beverages: apparatus
Means to treat food
By applying fluid
99523, 99607, 99608, 99618, 241285A, B02B 300, B02B 308
Patent
active
050367579
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention is directed to an apparatus for shelling and degerminating corn.
At the present time, corn is processed in large quantities to form the greatest variety of end products. In addition to the wet de-germinating of the corn for starch production, the corn is de-germinated and ground for conventional uses in milling. The end products of the processing in the mill are substantially supplied to the feedstuff and oil industries, the brewing industry, polenta production, the snack product industry or corn flake production. Each of these uses places different demands on the processing in the mill, wherein the investment and processing costs for the processing in the mill increase in the sequence of intended uses named above.
The apparatus, according to the invention, is used for the production of flaking grits which constitute the starting product for corn flake production. The demands placed upon milling are the highest in this instance. The de-germinating and shelling of corn for this purpose have been effected for decades in the "Beall de-germinator". The latter comprises a stator, a rotor being rotatably supported in the stator housing. The stator housing and the rotor form a processing space which is at least approximately annular in cross section and have knobs on their mutually facing sides. In addition, the inside of the stator is divided into siftings segments in the circumferential direction, which siftings segments are provided alternately with knobs or with a sieve hole, respectively. This known apparatus also comprises a stator housing having two parts, whose two halves are separated by a horizontal plane and are swivelable relative to one another around a hinge axis and can be screwed together in the closed state. If the upper half of the stator housing is removed (folded up), the lower half forms a trough, which is shaped like a half-circle in cross section, the rotor which is held in bearing half-shells at the ends lies in the trough. By means of folding up the upper stator housing half, the lower half of the processing space is not accessible. The rotor must also be removed for this purpose. In addition, the Beall de-germinator comprises a conical work space which increases in diameter from the inlet end to the discharge end, and the stator housing and rotor are constructed conically in a corresponding manner. If the work space is to be changed in the direction of the rotor radius corresponding to the nature of the corn to be processed, the rotor is axially displaced in the stator housing. This requires a comparatively costly bearing support. If it is necessary to build such machines for greater outputs with longer processing spaces, the diameter of the rotor and stator housing must be correspondingly enlarged toward the discharge end, as well. Another disadvantage of this apparatus is the fact that the corn dust portion in the flaking grits is high, which detracts from the yield.
SUMMARY OF THE INVENTION
The object of the present invention is to improve an apparatus of the type described above in such a way that the processing space is easily accessible in the event of disturbance and the shelling and de-germinating process can be managed in an optimal manner.
Blockage in the processing space can be corrected by means of the detachable housing wall parts when the machine is running. In particular, the cross section of the processing space can be adapted to the nature of the material to be processed without an axial displacement of the rotor.
When the processing space, which is annular in cross section, has the same or at least approximately the same diameter along its entire length, its length can be increased without the machine taking up more space in width or height. In addition, the occurrence of dust in the discharge is greatly reduced by means of this step and the required power is lower while maintaining the same product throughput. The advantage of the lower portion of dust in the discharge is that the latter need not be fed to the addit
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patent: 4292890 (1981-10-01), Salete-Garces
patent: 4515075 (1985-05-01), Satake
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Buehler AG
Simone Timothy F.
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