Importance

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Abstract

A rotating drum pump having a plurality of fluid driven pistons includes a pump housing with an enclosed rotating drum, and connection openings for a supplied and discharged driving fluid and for a supplied and discharged pump flow located in end walls of the housing. The drum comprises several cylinder spaces arranged axially in pairs and concentrically arranged inside the envelope surface thereof. In the cylinder spaces, which are arranged axially in pairs and are separated by a partition, there are arranged a drive piston and a pump piston interconnected by a piston rod passing in a sealed manner through the partition. During the rotation of the drum, a driving fluid is supplied to one side of the driving side and urges the drive piston connected to the pump piston, whereby a pump flow is pressed out with the pump piston from one side of the pump side whereas driving fluid from the other side of the driving side is discharged and pump flow is supplied to the cylinder space on the other side of the pump side.

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First Claim