Design of grain mover associated with the provision of a number of technical requirements: obtain the greatest possible desired qualifications, minimum mass and size ditch the device, high quality floating mass of grain.

Length of spiral of the screw is H = 2 m, step s = 0.06 m speed n = 900 min ^-1 = 15 c ^-1, density of the grain material ρ = 740 kg/ m³, the diameter of the helical screw is D = 0,086 m.

The inner diameter of the spiral of the screw is equal to d = 0.02 m, window height is equal to h = 0.25 m, the window width in cross-section a = 0,26 m, in the outlet section b = 0,49 m. Square in all the walk-through sections:

= 5,5·10^–3 m²; = 0,065 m²; = 0,23 m².

On the basis of the continuity equation of flow for any i-th cross-section in the channel can be recorded:

;

.

Where the rate of flow Q will be equal to: = 3,66 kg /c = 13,2 t/h.

The experimental value of the rate of flow: Qэ = 7.2 t/h.

Taking into account experimental studies of the coefficient of the lag:

= 0,55.

Then the speed in each section will be:

0,5 m/с;

0,042 m/с;

0,022 m/с.

Pressure drop in each section is a spiral-screw device when the movement of grain in the agitator is on the basis of Bernoulli's equation:

0,47 N/m²

100 N/m²

Pulling force G is given by: 12,3 N.

Given the ratio of 8·104 kg/m find the speed of the device:

0,0124m/с = 0,744 m/min.

This speed allows you to effectively carry out the turning of grain in the mound.