| 20090162150 | DEVICE, AND METHOD FOR FEEDING SUBSTANCES - An apparatus for pumping free-flowing materials, having a receptacle coupled to a vacuum pipe and a pumping gas pipe, at least one filter, at least one supply pipe, and at least one drainage pipe for a material being associated with the receptacle. The apparatus includes a vertically extending cylindrical pump chamber configured to pneumatically pump liquids, powder, suspensions and pastes. Further, a device is mounted in an upper region of the pump chamber configured to separate liquid and powder. The device further includes a filter element and a float member. The float member is configured as a sealing element above, and a lower region of the pump chamber is coupled to the at least one supply pipe and the at least one drainage pipe for at least one of a liquid, a powder, a suspension, and a paste. | 06-25-2009 |
