Patent ID: 9004890
Filing Date: 2015-04-14
Classification: F04C

Abstract:
1. A gear pump comprising: two intermeshing gears, which are mounted to rotate within a pump housing through a driveshaft and a journal and form a feed channel system between a pump inlet and a pump outlet, and with several gaps formed between the pump housing, the two intermeshing gears, driveshaft and journal, in which one of the several gaps is formed between the driveshaft and one of the two intermeshing gears, and in which a connection device is arranged in the gap for splined connection of the driveshaft to the one gear, wherein the one of the several gaps between the driveshaft and the one gear is sealed to the front ends of the one gear by a packing on each one of the front ends; wherein the packings are formed by at least two sealing rings arranged at a spacing from each other on the periphery of the driveshaft, the spacing between at least two sealing rings being equal to or less than the width of the one of the two intermeshing gears and wherein the at least two sealing rings located within the at least one of the two intermeshing gears.