Pumping device for pumping fluid
AssigneeMontanuniversitaet Leoben
InventorHerbert Hofstätter
Life of this patent
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Abstract
The present invention describes a pumping device (1) for pumping fluids. The pumping device (1) comprises a force transmitting element (2), a tension unit (3) coupled to the force transmitting element (2) and a seal element (10). The force transmitting element (2) is adapted for transferring an upstroke and a downstroke to a pump plunger (5) for pumping fluid (12). The tension unit (3) is adapted for applying a tension force (F) to the force transmitting element (2) for keeping the force transmitting element (2) under tension during the upstroke and the downstroke. The seal element (10) is adapted for sealingly preventing pumping fluids (12) during the downstroke and for enabling pumping fluid (12) during the upstroke. A part (16) of the seal element (10) is rigidly coupled with the force transmitting element (2).
Claims15
A pumping device for pumping fluid, wherein the pumping device comprises:
- a force transmitting element;
- a tension unit coupled to the force transmitting element;
- and
- a seal element;
- wherein the force transmitting element is adapted for transferring an upstroke and a downstroke to a pump plunger for pumping fluid;
- wherein the tension unit is adapted for applying a tension force to the force transmitting element for keeping the force transmitting element under tension during the upstroke and the downstroke;
- wherein the seal element is adapted for sealingly preventing pumping fluid during the downstroke and for enabling pumping fluid during the upstroke;
- and
- wherein a moveable part of the seal element is rigidly coupled or is in slidable contact with the force transmitting element, so that the seal element is synchronized with a movement of the force transmitting element.
A method for pumping fluid, wherein the method comprises:
- transferring an upstroke and a downstroke by a force transmitting element to a pump plunger for pumping fluid;
- applying a tension force to the force transmitting element by a tension unit for keeping the force transmitting element under tension during the upstroke and the downstroke;
- sealingly preventing pumping fluid during the downstroke and enabling pumping fluid during the upstroke by a seal element;
- and
- coupling a movable part of the seal element rigidly with or in slidable contact to the force transmitting element, so that the seal element is synchronized with a movement of the force transmitting element.
Dependencies are inferred from the claim text.