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May 18, 2022 View:

What are the main differences between lobe pumps and centrifugal pumps?

lobe pump and centrifugal pump are two completely different products, mainly with the following differences:
1. lobe pump has strong self-priming ability, while centrifugal pump must be filled with liquid before moving to rotate.
2. The lobe pump is a volumetric pump, the delivery flow can be controlled more precisely, and it can also be easily made into a variable pump. The output flow of the centrifugal pump is not controllable and decreases with the increase of its own resistance.
3. lobe pumps can be easily made into varieties with higher output pressure, such as 15kg/cm2, which are suitable for long distance or high resistance quantitative conveying.
4、The lobe pump's rotational speed is very low, generally between 200rmp and 600rmp, and the conveyed material is outputted smoothly without its composition being damaged. The rotational speed of centrifugal pump is very high, and the conveyed material is subject to strong impact and centrifugal force, so the centrifugal pump often produces the phenomenon of inconsistent material composition when conveying the mixture, which makes the quality of the finished product decrease. This pump is a good choice to solve this problem, so it is especially suitable for conveying mixed materials and even materials containing solid particles.
5. The lobe pump is more complicated and precise to make, and the cost is high, which is also the big difference between it and centrifugal pump.
6. The lobe pump can be used to transport very high viscosity materials, so it is also called colloid pump. The centrifugal pump does not have this feature.