Calculation formula of rotating blade of screw conveyor

Screw conveyors are commonly used equipment in cement enterprises. The rotating blades are easy to wear and need to be replaced frequently. When replacing the rotating blade, firstly, it is necessary to calculate the blanking development diagram. Generally speaking, it is inconvenient to adopt the existing calculation methods and formulas. This paper proposes a calculation method that does not refer to formulas. This method only requires the foundation of elementary mathematics and is easy to master by solving equations. How to check and maintain the failure of the screw loading conveyor?

The outer diameter of the screw is Du003dф500mm

The inner diameter of the screw is du003dф140mm

Blade height hu003d180mm

Spiral pitch Pu003d400mm

Blank development drawing

L length calculation

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The helix rises uniformly, and the length L is in a triangular relationship with the expansion length of the outer diameter D of the helix and the pitch P of the helix.

L Length Calculation LS Screw Usage and Parameters Detailed Explanation

The spiral rises uniformly, and the length l is in a triangular relationship with the expansion length of the inner diameter d of the spiral and the pitch P of the spiral.

Calculation of blanking expansion diagram α, r, R, according to Figure 5, the known L, l, h column equations:

According to R, r, α data, draw the cutting diagram (Figure 5).

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