Patent ID: 7354188
Filing Date: 2008-04-08
Classification: B29C,F04C

Abstract:
1. Gear pump for highly viscous materials, comprising: a housing; a gear section having a sun wheel and several planet wheels disposed to be fixed at the housing; an input screw section having an input screw shaft, which is rotationally fixedly connected with the sun wheel, and having an input transfer mix area; and an output screw section having an output screw shaft, which is rotationally fixedly connected with the sun wheel, and having an output transfer mix area; wherein, in the input and output transfer mix areas, the input and output screw shafts have a flight depth decreasing toward the gear section, and, in the housing, flights are formed which extend in an opposite direction relative to the flights of the screw shafts, the flights having increasing diameters toward the gear section, and each of the flights ending between the planet wheels.