CONTINUOUS CONCRETE MIXER Russian patent published in 2015 - IPC B28C5/22 

FIELD: construction.

SUBSTANCE: in a continuous concrete mixer comprising a drum with a rotation drive, means for loading and unloading, the drum is made in the form of an installed inclined cylinder at the angle α relative to the horizontal axis of rotation of the drum with flat end walls of elliptical shape, placed at various angles β and ψ to the axis of rotation and to each other at the angle φ. Axes of large diameters of ellipses of end walls are turned along the axis of drum rotation relative to each other by the angle ω. Along the entire length of the drum along its axis of rotation there is a conical spring mounted with flat cross section of turns, which is equipped with a device to vary pitch of turns, by means of its stretching or compression, and is mounted so that the small diameter of the conical spring is placed inside the loading journal, and the large diameter of the conical spring is mounted at the unloading journal.

EFFECT: cost reduction.

2 dwg