Hose pump with planetary gear

摘要

The invention relates to a hose pump for delivering a medium conveyed through a hose, including a housing, a drive, a carrier rotatable with respect to the housing, and a plurality of squeeze rollers that are mounted rotatably on the carrier and can be driven by the drive via a gear with a sun wheel and with a first planet wheel connected so as to rotate with the respective squeeze roller, wherein rotating squeeze rollers, during operation of the pump, press a hose, which is inserted into the pump, by squeezing the hose against an abutment and in this way convey the medium onwards through the hose in the delivery direction. In order to permit easier and quicker insertion of a hose in such a hose pump, the invention proposes that, in addition to the first planet wheel, each squeeze roller is also assigned at least a second planet wheel, which is coupled to the inner circumference, acting as a hollow wheel, of the housing in order to set the carrier in rotation from the drive during operation of the pump.

主权项

1. A hose pump for conveying a medium carried in a hose, the hose pump comprising:
a housing with an inner circumference that acts as a crown wheel, a drive, several first planet wheels, several squeeze rollers, each of the several first planet wheels connected to a respective one of the several squeeze rollers in a rotationally rigid manner such that each of the several squeeze rollers can be driven by the drive via a gear mechanism with a sun wheel and a respective one of the several first planet wheels, wherein the rotating squeeze rollers press a hose inserted into the pump against an abutment during operation of the pump to squeeze the hose and thusly convey the medium in the hose onward in a conveying direction, wherein the hose pump includes several second planet wheels, with each of the several second planet wheels being a toothless friction wheel and each of the several second planet wheels is assigned to a respective one of the several squeeze rollers, and wherein the squeeze rollers are rotatably supported on a carrier that is rotatable relative to the housing the inner circumference of the housing is smooth, and each of the several second planet wheels frictionally engages the inner circumference of the housing to set the carrier in rotation by the drive during operation of the pump.