Gear pump including friction brake ring to generate uniform conveyance flow

摘要

A gear pump includes a plurality of gear wheels rotatably retained in a pump housing and that engage in one another for the conveyance of a medium. One of the gear wheels is driven by a pump shaft, which can be coupled to a drive by means of a coupling end. To maintain a uniform conveyance flow, in particular with strongly fluctuating operational pressures, during alternating load states, within a single rotation, a brake ring is disposed on the circumference of the pump shaft, which acts with at least one brake surface on a friction surface of the pump shaft or on a friction surface of the pump housing.

主权项

1. A gear pump comprising:
a plurality of gear wheels that engage with one another, for the conveyance of a medium and that are contained in a rotatable manner in a pump housing; a pump shaft coupled to one of the gear wheels, wherein the pump shaft includes a coupling end; a friction brake ring disposed about a circumference of the pump shaft and having at least one brake surface that continuously acts on a friction surface of the pump shaft, wherein the friction brake ring is retained in the pump housing such that the friction brake ring cannot rotate, and the at least one brake surface is formed on an inner circumference of the friction brake ring, and wherein the at least one brake surface contacts the friction surface of the pump shaft, an outer diameter of which is greater than an inner diameter of the friction brake ring.