Muyang MNMP21A Vertical Iron Roll Rice Whitener

Muyang MNMP21A Vertical Iron Roll Rice Whitener is applicable for a rice processing plant with a daily capacity of 80～120 tons white rice and used for whitening thoroughly cleaned rice. In combination with Muyang MNML40 vertical emery roll rice whitener, the white rice with different whitening degrees can be produced, and good technological and economic results can be obtained.

The floated rice bran on rice surface can be removed by the Dampening Iron Roll Rice Whitener, thus a good surface smoothness of the white rice can be obtained for further polishing. Any usage beyond the scope of application like processing un-cleaned rice should not be regarded as an application related to the design purpose. The feed machinery manufacturer will not undertake the responsibility of any loss resulted here from.

The usage relevant to the design purpose refers to that the users should strictly follow the regulation sand instructions in aspects like installation, operation, inspection and maintenance given in the Operation Manual for usage of this feeding machine.



1 Stander: including base frame and operating gate
2 Bran suction device: including differential pressure gauge
3 Whitening chamber: including bearing assemble, screw head, iron roll, screen frame and rice screen etc.
4 Electric control: including ammeter, start and stop buttons, etc.
5 Discharge outlet: including pressure door, discharge spout, weight and pressure lever
6 Main driving device: including main motor, belt pulley and V-belt
7 Dampening system: including water pump and solenoid valve
8 Air jetting fan
9 Feeder device: including feed hopper and feeding screw

Brown rice husked by emery roll rice whitener is driven by horizontal feeding screw on the grinding machinery, and then enters into the bottom of whitening chamber, and is conveyed by screw head from top to bottom to the clearance between iron roll and rice screen. Here, brown rice moves upwards spirally along the iron roll surface. The rice grains can be milled and whitened by frictional action between the iron roll and rice grain, screen and rice grain as well as between rice grains.



The air flow on the grinding machine generated by the air jetting fan enters hollow shaft from upper side to lower side, and then pass through the materials layer from inside to outside, thus the material is cooled and the temperature of rice is reduced. In addition, the bran is forced to discharge from screen apertures rapidly and sucked out by bran suction fan under dual effects of aspiration system and jetting air flow.