PADDLE MIXER FOR BULK MATERIALS Russian patent published in 2023 - IPC B01F25/452 B01F27/70 B01F27/72 

FIELD: mixing bulk materials.

SUBSTANCE: invention can be used in construction, chemical, pharmaceutical, food and other industries. The paddle mixer for bulk materials comprises a housing, a rotating shaft with mixing blades placed in it, unloading and loading nozzles for the mixture components and a distributing device, the rotating shaft is hollow, has rectangular ports at the inlet section connected to the loading nozzle for supplying the component prone to segregation through the hole in a fixed shell, covering the inlet section of the shaft, and, on the rest of the length, unloading holes arranged in a checkerboard pattern and having a diameter equal to d=(1.15...1.25)d_max, where d_max is the maximum particle diameter of the mixture component prone to segregation, and the distributing device is made in the form of a helical spiral securely fixed on the inner surface of the hollow rotating shaft.

EFFECT: increased reliability of operation by eliminating the grinding of particles prone to segregation of the component when it is transported by a helical spiral in the cavity of a rotating shaft, and simplified design of the mixer.

1 cl, 3 dwg