SYSTEM OF PREPARATION AND SUPPLY OF MATERIAL OF A CONSTRUCTION 3D PRINTER Russian patent published in 2022 - IPC B29C67/04 E04G21/02 

FIELD: construction.

SUBSTANCE: invention relates to the construction field, namely to the print head of a construction 3D printer. The effect is achieved by the fact that the material preparation and supply system of a building 3D printer contains a housing inside which there are two cavities: a mixing cavity and a supply cavity connected to each other by a channel for supplying the finished mixture, a mixing shaft is installed in the mixing cavity, a feed shaft is installed in the supply cavity , while the mixing shaft is made with the possibility of rotation due to its own drive and is a cylinder with two functional elements installed on it: mixing elements and a supply element, the supply shaft is rotatable due to its own drive and is a rotor of a gerotor pair, and the axes of the mixing shaft and the supply shaft are mutually perpendicular, while a cyclone for supplying a dry mixture in powder form is connected to the mixing cavity, which is connected with a dry mixture supply channel, as well as a liquid supply channel, a replaceable nozzle with its own drive is installed at the exit from the supply cavity.

EFFECT: invention improves the mixing efficiency of the mixture, the quality of the printed structures and the printing speed.

4 cl, 1 dwg