摘要:
Apparatus is disclosed for use in the abrasion of small objects, e.g. rice grains, to remove surface material, e.g. bran, therefrom. A chamber (1) has a bottom formed by an abrasive endless belt (7) which passes under a transverse wall (4) of the chamber. An inlet (12) is provided for objects to be abraded. An outlet (14, 32) is provided for abraded objects. In use, objects recirculate in the chamber and material removed from said objects passes under the transverse wall. The chamber has a top (11), opposed to the bottom. The top is sufficiently close to the bottom that, in use, pressure is exerted on the recirculating objects to press the lowest objects against the moving belt.
摘要:
A refining process for semiraw rice comprises a first step (A) in which surface cuts are carried out in the rice grains by rubbing of the grains against an abrasive surface, a second step (B) in which the surface-cut grains are submitted to mutual rubbing for removal of the cortical layers therefrom and a third step (C) in which said cortical layers are separated from the rice by sieving.
摘要:
Processes for dehusking psyllium seeds to obtain high yields of high purity psyllium seed husk. These processes comprise milling intact psyllium seeds in a mill which causes the husk to be fragmented by collision under conditions whereby the husk is fractured and separated from the non-husk portion of the psyllium seed without substantial breakage and size reduction of the non-husk portion. Preferred milling utilizes impact speeds within the range of from about 5m/sec to about 40m/sec.
摘要:
A grain husking and polishing machine includes a grain treatment chamber 50 defined by an abrasive rotor mounted on a hollow rotating shaft 13 and a screen assembly 44 surrounding the rotor 45. The screen 44 is mounted on a movable annular plate 25 actuated by a sidewardly movable mechanism 62-65 capable of changing the eccentricity of the screen assembly 44 with respect to the rotor 45. This arrangement improves the versatility of the machine in that it can be adjusted to treat different types of grain as required; the adjustment can take place while the machine is running. In addition, a more efficient combined husking and polishing action is accomplished by providing the rotor with a plurality of cam-like abrasive discs 47 spaced apart by a corresponding plurality of spacer rings 79 having a diameter smaller than that of the discs so as to form grain expansion chambers therebetween, whereby an energetic husking action followed by a moderate abrading polishing action are effected along the treatment chamber.
摘要:
a grain flouring system includes a polishing machine for polishing grains, and roll mills and sifters for repeatedly mill and sift the polished grains to provide a flour having a desired mesh size. A moisture adding device is provided for adding moisture to the grains milled in at least one of the roll mills, thereby maintaining the grains in a suitably moistured condition during the milling operation.
摘要:
Significant improvements to the milling of wheat kernels are possible by sequentially removing the bran layers of the kernels prior to processing in general accordance with conventional milling principles. The wheat kernels are preprocessed by means of a number of friction and abrasion operations to peel or strip the various layers of bran from the kernels. A series of friction machines (208,215,218) followed by abrasion machines (224,230) progressively remove the bran layers and separate the same into generally pre-identified bran layer mixtures. Up to about 75% of the bran can be removed with the remaining bran being essentially confined to the kernel crease and removed during the conventional milling operation. Such preprocessed kernels, when milled in the conventional manner, have higher yields due to less bran contamination. This selective removal of the bran layers also facilitates low cost production of speciality bran products or selective reintroduction of bran layers to flour after, or during, further milling.