The Difference In Structure And Advantages Of Internal And External Gear Pumps

Gear pumps are divided into internal meshing and external meshing according to different meshing methods. As the name implies, external meshing gear pumps are the external meshing of a pair of meshing gears of the pump. Due to the different combination methods, the meshing gear pump and the external meshing gear pump in the Hengsheng pump industry are also quite different in terms of structure and advantages.

The advantages of external gear pump:

The utility model has the advantages of simple structure, small size and quality, convenient manufacture, low price, reliable operation, strong self-priming ability, insensitive to oil pollution, and easy maintenance.

The advantages of internal gear pump:

1. Smooth liquid delivery, no pulsation, small vibration and low noise;
2. Strong self-priming performance;
3. The correct selection of parts materials can transport a variety of corrosive media, and the operating temperature can reach 200 °C;
4. The rotation of the inner and outer rotors is the same, the wear is small, and the service life is long.
5. The speed of the pump can be appropriately changed to change the flow rate of the pump;
6. It is especially suitable for the transportation of high-viscosity medium.

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