Vane Pumps are known for their dry bottom oil filling, easy maintenance, and good suction characteristics, making them a popular choice for low viscosity applications. They have a variety of blade configurations, including sliding blades, flexible blades, swing blades, rolling blades, and external blades. Each vane pump has unique advantages when it comes to specific applications. For example, external vane pumps are ideal for handling large solids. Flexible vane pumps, on the other hand, can only handle a small amount of solids, but they produce good vacuum. The vane pump can dry and process a small amount of steam in a short time.



What do they do

Vane pumps can handle medium viscosity fluids, but are best suited for lower viscosity applications such as gas (propane), ammonia, solvents, fuel oils, alcohol, etc. These pumps have no internal metal-to-metal contact and are self-adhesive to compensate for wear, allowing them to maintain optimal performance on these non-lubricating liquids.

How vane pumps work

Vane pumps use a rotating cylinder with a slot (or rotor) that holds a series of vanes that rotate in a cavity. The rotor is offset in the casing bore so the blade slides in and out as it rotates. This creates a volume that expands and contracts, allowing liquid to flow through the pump.

advantage

The sliding contact of the blades makes this pump ideal for thin liquids
Compensation for wear through blade extension
Can dry in a short time
Good vacuum characteristics

Disadvantage
Complex shell and many parts
Not suitable for high pressure or high viscosity applications
Not suitable for grinding applications

Is the vane pump right for your application? If used for low viscosity applications, it is very likely. Always talk to an experienced engineer to make sure you find the right pump for your job.

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