Patent ID: 11898549
Assignee: PROMINENT GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A dosing pump comprising a dosing chamber, a working chamber, a dosing diaphragm comprising an elastic material having edge regions, and a gripping device having two mutually corresponding contact surfaces, the gripping device holding the dosing diaphragm at the edge regions,
wherein the dosing chamber and the working chamber are separated from each other by the dosing diaphragm,
wherein there is provided a device for reciprocating movement of the dosing diaphragm between a first position and a second position,
wherein the volume of the dosing chamber is smaller in the first position than in the second position,
wherein there is provided a prestressing device which prestresses the dosing diaphragm in the direction of the first or second position,
wherein the prestressing device is configured so that when the dosing diaphragm is in the first position or the second position it is prestressed in the same direction, such that the dosing diaphragm no longer involves a relieved state, but moves only between two positions which are both prestressed in the same direction and the dosing diaphragm is elastically deformed in the same direction even when there is no pressure difference between the working chamber and the dosing chamber, characterized in that the gripping device is of such a configuration that the gripping device functions as the prestressing device, and
wherein the dosing diaphragm is metal, wherein due to the prestressing of the dosing diaphragm the dosing diaphragm is moved in the direction of the first position until the return force of the elastic material compensates for the prestressing force.