METHOD FOR FEEDING PASTY MASSES AND PUMP DEVICE FOR FEEDING PASTY MASSES

摘要

The invention relates to a method for feeding pasty masses using a pump device which has a piston pump with at least two cylinders, each having one piston, wherein each cylinder of the pump device is connected to a pre-fill container via an inlet opening, which can be closed by an inlet slide valve associated with the cylinder, and wherein each cylinder of the pump device is connected to a feed line via an outlet opening, which can be closed by an outlet slide valve associated with the cylinder, wherein pasty mass is fed from the pre-fill container into the respective cylinder during a suction stroke of a cylinder with the inlet opening open and the outlet opening closed, and wherein pasty mass is fed into the feed line during a pump stroke of a cylinder with the outlet opening open and the inlet opening closed, wherein the piston velocity is greater during the suction stroke than during the pump stroke, and wherein at the end, toward the end or shortly after the end of the suction stroke, the inlet opening is closed by the inlet slide valve, whereafter the pasty mass is compressed in the cylinder before the outlet opening is opened.