GlobalVac is home to a variety of rotary screw vacuum pump systems. These are positive displacement pumps reliant on several screws in moving fluids along the axial dies of the screws. In their simplest form, the pumps in this class allow for the creation of cavities as they rotate. As a consequence, pumping of the materials occurs along the screw spindle leading to the displacement in the direction of the screw’s rotation.
Nowadays, there are parallel technologies deploying the rotary screw vacuum pump technology to form multi-axial products. As a result, several cavities of different sizes can be created between the screws making the pump. As a principle, these pumps form a useful lot that allows for the movement of highly viscous fluids under high pressure.
At GlobalVac we have a number of rotary screw vacuum pump types, these include:
Positive displacement pumps: These are pumps that discharge the fluid by displacing it along the screw rotor. The otherwise volumetric pumps combine several techniques in creating the thrust required in pumping the fluid to the required destination.
Single screw pumps: These are pumps with vertical shafts for pumping fluids along the screw. Most pumps in this class have double elliptical threads attached to a rubber ring. As the screws rotate, cavities are created along the screw leading to a suction in the fluid being pumped.
Double screw pumps: Instead of having a single screw, double screwed pumps come loaded with two screws rotating in opposite directions during their normal operation. The pumps are predominantly used in pumping sea or fresh water and petroleum products.
Three screwed pumps: These have three screws used in transporting fluids of low viscosity, though dependent on the power of the electric motor and the suction thrust created by the motion. For better performance, fluids with higher pump efficiency, have a reduced friction level.