1) Classification according to the working principle
According to the working principle of the milled parts, the rice mill can be divided into three types: wipe-off type, mill type, and mix type.
Wipe off rice mill
The wipe-off rice mill is also called a pressure type rice mill, which relies on strong friction and rubbing to make the brown rice white. The rice mill machine, which is mainly based on the wiping effect, is mainly an iron roller rice mill machine, and its model is small.
2. Milling rice mill
The milling type rice mill machine mainly uses the grinding effect to remove the brown rice skin. The pressure in the whitening chamber is small, and the corresponding whitening chamber has a large volume. Therefore, the milling type rice mill machine has a larger model. The roller is mostly a sanding roller.
3. Hybrid rice mill
The hybrid rice mill is a rice mill that uses a combination of wiping and milling to crush the epidermis. The roller can be a sand roller or an iron roller. The pressure in the whitening chamber is between the milled rice mill and the wipe-off rice mill, so the model is more moderate and the process effect is better.
(2) Classification according to the installation form of the roller shaft
Vertical rice mill
The main shaft of the vertical rice mill machine is vertically placed, mostly sand roller rice mill machine, and the whitening pressure is small, which is suitable for processing the crunchy powdery rice. Vertical rice mills use sanding rollers.
2. Horizontal rice mill
The main shaft of the horizontal rice mill machine is horizontally placed, and the sand roller, iron roller, and sand iron combined roller are used in the horizontal rice mill machine.
(3) According to the different classification of roller materials
Iron roller rice mill
The iron roller rice mill machine is a rice mill machine with the iron roller as the rolling roller. The iron roller is cast by white cast iron, which requires good surface quality and wears resistance.
2. Sand roller rice mill
The sand roller rice mill machine is a rice mill machine with a sand roller as a roller, belonging to a milling type and a hybrid rice mill machine.
3. Sand and iron combined roller rice mill
The roller of the sand and iron combined roller rice mill machine can be used with a sand roller or an iron roller and can be selected according to specific conditions.
(4) Classification by air blowing or not
1. Air spray rice mill
The air-jet rice mill machine sprays air into the whitening chamber during the rice milling process, and the airflow participates in the whitening operation, which helps to improve the whitening effect and improve the product quality.
2. Do not spray the rice mill
The non-steaming rice mill machine is a traditional rice mill machine, which has no air blowing device, so the quality of the rice milling is worse.
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