Metering device for metering and transporting liquid medium, for e.g. washer, has drive and couple shaft whose coupling elements are displaceably formed in axial direction in roller carriers of pump devices driven for pumping operation

摘要

The metering device (1) has several pump devices (2a-2b) that carry the liquid medium in a hose pump equipped in pump head turning movable carrying devices on pumping hose squeezing rollers. The pump devices have pump heads (6a-6d) that are supported on a drive and a couple shaft (5). The coupling elements (10a-10d) of the drive and couple shaft are displaceably formed in axial direction for pumping operation with corresponding coupling elements (11b,11d) in roller carriers (7a-7d) of the pump devices so that the pump devices are driven for pumping operation by a drive motor (3).