Multi-cylinder piston pump
AssigneeAliva Aktiengesellschaft
InventorErnst Egli
Life of this patent
Estimating the term…
Abstract
A multi-cylinder piston pump of rotary slide valve design for conveying free flowing materials, in particular concrete, comprises a rotary slide valve (33, 36) connected to the piston (48, 49) and their cylinders (44, 45) with which it pivots. The feeder hopper (4) of the pump is equipped with a stirrer (5) which is actuated only when the pump is in operation. The rotary slide valve (33, 36) is located outside the feeder hopper (4). During the delivery stroke, the axis of the delivery cylinder is coaxial with the longitudinal axis of the adjacent conical pressure pipe (18). This pump is of simpler design than known pumps and is therefore more reliable and requires less maintenance.
Claims7
Two-cylinder piston pump with material hopper of the rotary slide valve type for conveying flowable material, particularly concrete, wherein a rotary slide valve (33, 36) is connected with the pistons (48, 49) and their cylinders (44, 45) for common actuation and the rotary slide valve (33, 36) is arranged outside the material hopper (4), characterized by a pressure pipe carrier (13) with pressure pipe (18) and with an inner flange (20) arranged in the material hopper and with a counterflange formed as a cutting ring (23), wherein the outwardly opening connecting location between the inner flange and the counterflange lies in the interior of the material hopper (4).
Dependencies are inferred from the claim text.