växelpumpar

Växelpumpar, also known as rotary vane pumps, are a type of positive displacement pump. They utilize a rotor with sliding vanes to transfer fluid. The rotor is positioned eccentrically within a cylindrical casing. As the rotor spins, the vanes are forced outwards by centrifugal force, maintaining contact with the casing wall. This creates a series of expanding and contracting chambers between the rotor, vanes, and casing.

Fluid enters the pump through an inlet port. As the chambers expand, they create a vacuum, drawing the fluid into the pump. The rotating rotor then carries this trapped fluid around the casing towards an outlet port. As the chambers move towards the outlet, they contract, increasing the pressure on the fluid and forcing it out of the pump. The continuous rotation of the rotor ensures a steady flow of fluid.

Växelpumpar are known for their simple design and reliable operation. They are often used in applications requiring a steady, non-pulsating flow, such as lubrication systems, fuel transfer, and vacuum generation. They are generally suitable for handling a wide range of liquids, including oils, solvents, and some chemicals, provided they are compatible with the pump's materials of construction. Maintenance is typically straightforward due to their fewer moving parts compared to some other pump types.