A gear pump maintains the flow of fluid by carrying the fluid between the teeth of two meshed gears. One gear is connected to drive shaft and other is meshed with the first gear. The pumping chambers formed between the gear teeth are enclosed by the pump housing and the side plates. A low pressure region is created at the inlet as the gear teeth separate. As a result, fluid flows in and is carried around by the gears. As the teeth mesh again at the outlet, high pressure is created and the fluid is forced out. Figure 9.25 shows the construction of an internal gears pump; most of the gear type pumps are fixed displacement. They range in output from very low to high volume. Usually, they operate at comparatively low pressure.
Figure 9.25 Schematic Diagram of Gear Pump
Leave a Reply