Mixing and conveying facility for dry building materials from a supply silo

A mixing and conveying facility for dry building material, the facility comprising a first pipe (17), wherein said first pipe (17) is configured to receive dry building material from a supply silo (1), downstream which first pipe (17) a tempering and buffering container (10, 18) is arranged, such that said building material is processable into said tempering and buffering container (10, 18), said tempering and buffering container (10, 18) including a fitting (8) for adding water to the dry building material, and an inner, drivable stirrer, wherein said stirrer comprises a shaft (19, 12) from which a shovel means (20, 23) projects, and wherein the tempering and buffering container (10, 18) at the bottom runs out into a cone or channel, wherein the facility further comprises a second pipe (15) with a conveying screw (14) with its own drive (16) and a pumping hose (5), wherein the building material mixture processed in the tempering and buffering container (10, 18) is conveyable via said conveying screw (14) into said pumping hose (5) for application,

• characterized in that
• the facility is configured for an arbitrarily settable mixing time of the quantity of building material to be conveyed out of the supply silo (1) in such a way that said second pipe (15) and said conveying screw (14) are arranged fittingly to the cone or channel of the said tempering and buffering container (10, 18) for co-acting upon interrupting the application process, in that the said conveying screw (14) in said second pipe (15) is operable in reverse mode such that said building material is constantly conveyed back and at the rear end is pressed upward-into said tempering and buffering container (10, 18), as there is otherwise no place for the said building material to escape.