Advantages of vertical rice mill
1. Gravity has no effect on the centrifugal acceleration of rice grains, and the speed of rice grains and the pressure in the white milling chamber are uniform;
2. When feeding, gravity produces a driving force over the full length of the white milling chamber, and the density of rice grain fluid is relatively uniform;
3. The number of rice knives is large, the material is soft, and the adjustment is convenient.
4. The combined effect of the above 3 points can reduce the broken rice rate;
5. The white roller adopts a series of grinding wheels, which can be replaced and adjusted locally when worn, which improves the service life of the roller;
6. The bran layer is smooth and smooth.
Disadvantages of vertical rice mill
1. High requirements for keeping the operation smooth. During the manufacture and installation of the rice mill, the axis of the white roller must be kept vertical with slight errors. Even with a completely balanced white roller, the center of gravity deviates from the vertical line to generate an unbalanced force;
2. The bearing bears a combination of axial and radial bidirectional forces, which requires high performance, manufacturing and assembly quality of the bearing;
3. The volume and weight of the unit output are relatively large. The use of gravity as the axial driving force is limited, and the axial flow velocity of the ice flow is small. In the case of the same feed material as the horizontal rice mill, the diameter of the white roller must be increased to increase the annular cross-sectional area of the white roller. As the volume and weight of the rice mill increase,
4. It is inconvenient and time-consuming to disassemble the sand roller in the vertical direction of the top of the rice mill;
5. Soft rice knives wear quickly and have large quantities, increasing maintenance costs;
6. It is difficult and unreasonable for two white rollers to be coaxially or non-axially combined on a rice mill.
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