Screw Conveyor Flow Rate Calculator

The Screw Conveyor Flow Rate Calculator is an essential tool designed to determine the capacity of a screw conveyor, also known as its flow rate. By inputting the conveyor's diameter, pitch, RPM (rotations per minute), loading ratio, the material's loose density, and the inclination factor, users can accurately calculate the mass flow rate of material the conveyor can transport per unit of time.

Screw Conveyor Flow Rate Formula

The formula to calculate the Screw Conveyor Flow Rate is:

\[ Q = 60 \times \frac{\pi}{4} \times D^2 \times S \times N \times a \times d \times C \]

Where:

• \(Q\) is the mass flow rate (kg/hr),
• \(D\) is the diameter of the screw (m),
• \(S\) is the screw pitch (m),
• \(N\) is the RPM,
• \(a\) is the loading ratio,
• \(d\) is the loose material density (kg/m^3),
• \(C\) is the inclination factor.

Example Problem

Given:

• Diameter (\(D\)) = 1m
• Pitch (\(S\)) = 0.35m
• RPM (\(N\)) = 50
• Loading Ratio (\(a\)) = 1.25
• Material Density (\(d\)) = 150 kg/m^3
• Inclination Factor (\(C\)) = 1 (No inclination)

Calculation: \[ Q = 60 \times \frac{3.14159}{4} \times 1^2 \times 0.35 \times 50 \times 1.25 \times 150 \times 1 \approx 154,625.13 \text{ kg/hr} \]

This demonstrates how the calculator functions, providing a practical tool for engineers, designers, and operators to optimize the design and operation of screw conveyors in various industrial applications.