Insertion Machine: Internal gear pump working principle introduced

2019年9月6日星期五

Internal gear pump working principle introduced

Internal gear pump with involute tooth (Crescent) and cycloid tooth (Grout) two, the structure of a schematic view can be seen. These two kinds of internal gear pump work principle and main features are the same with the external gear pump. In the involute toothed internal gear pump, the pinion and internal gear to be installed between a crescent clapboard in order to separate the oil sump and the pressure chamber, cycloid gear meshing gear pump, also known as cycloid pump , In this pump, the pinion and the internal gear only differ by one tooth, so there is no need to set the diaphragm, the pinion in the internal gear pump is the driving wheel, the big gear is the driven wheel, and the big gear is working with the pinion Rotate in the same direction. t5f] S) a5
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Internal gear pump gear compact, small size, light weight, stable operation, low noise, high-speed operation at a high volumetric efficiency. However, when working at low speed and high pressure, the pressure pulsation is large and the volumetric efficiency is low, so it is generally used for medium and low pressure systems. In closed systems, this pump is often used as a charge pump. The disadvantage of internal gear pump is toothed complex, difficult to process, the price is more expensive, and not suitable for high-speed high-pressure conditions.
Internal gear pump! Dp} q @ b>
1 - external gear, 2 - internal gear, 3 - Crescent-shaped Seal

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