Pumping wet concrete supply pipe dry - involves sucking conveyor medium portions into funnel, and pressing in cleaning ball

摘要

The folding V-shaped hosepipe and series of conveyor pipes make up a conveyor duct, following a concreting pump tank, to be pumped completely empty. The conveyor medium pressed into the duct, is divided into two independently handled quantities, at the connecting point between hosepipe (6) and first conveyor pipe (7). It is sucked into the funnel (5) by a suction stroke of the plunger pump (3). The hose-pipe is folded away. A cleaning ball is inserted in the open end of the conveyor pipe, and pressed through the conveyor pipes. Residual concrete is reduced to a minimum.