First, we think about the rack design in the whole flour mill design. There are three making methods on the rack of flour grinders which are the whole casting, wall and panel assembly and welding wallboard rack. The whole casting rack design has good integrity and stiffness, the quality of the products is stable.

The wall and panel rack has the advantages of small volume, tiny size, convenient manufacturing and low cost which is convenient to arrange other components and achieve the totally closed flour mills design. The welding rack has the advantages of short production cycle, light weight and high finished products' rate.

Second, there are three kinds of shapes: the open type, the semi-closed type and the completely closed type.The advantages of this closed flour mills design lies in avoiding the disadvantages of the open type and semi-closed type to make the components well protected.

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