ROTARY FLUID PUMP OR MOTOR

A gear pump is disclosed in which pressure plates engage and provide a dynamic seal with the ends of the gear elements. The side of each pressure plate remote from the gear is divided into two separate pressure balancing zones, one of which is maintained substantially at inlet pressure and the other...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WELLMAN, ELLIS M
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	A gear pump is disclosed in which pressure plates engage and provide a dynamic seal with the ends of the gear elements. The side of each pressure plate remote from the gear is divided into two separate pressure balancing zones, one of which is maintained substantially at inlet pressure and the other at outlet pressure. A simplified seal assembly functions to seal the main housing and end caps and also to separate the two pressure zones. The main seal is ring-shaped and is formed with integral inwardly extending projections. The structure is arranged so that this seal can only be installed in the proper position. A second I-shaped seal separates the two pressure zones at a location between the bearings. Here again, such seal can be installed only in a single proper installed position. Both seals are pressure actuated to insure proper and complete sealing.