Screw pump used in oilfield mainly used to transfer drilling mud to
decanter centrifuge. So wel also call it as centrifuge feed pump.
It is made of hihg quality stainless steel material. Per different
working condition and transfer fluids we'll consider 304~316L or
the 2Cr.13Ni., etc.
Compared to other pumps, screw pump request higher maintenance
cost. Such as the rotor and stator cost.
Centrifuge screw pump is a positive-displacement pump that use one
or several screws to move fluids or solids material along the screw
axle. There are single screw pump, double screw pump, the triple
screw pump, as well as the quintuple screw pump. For drilling mud
process, we use the screw pump to transfer drilling fluid to Decanter Centrifuge from desilter tank or centrifuge tank
Screw pump transfer drilling fluid via the Screw Conveyor rotation. Center screw pole is the positive pole, the two sides
screw conveyor are negative pole. Negative poles rotate at opposite
direction with positive pole.
Screw pump Technical Parameters
|Model||Speed(rpm)||Capacity(m3/h)||Pressure(Mpa)||Head(m)||Motor(KW)||Outlet Flange (mm)||Permitted Solids Dia.(mm)||Fiber Length (mm)|
Actually when the screw conveyor is rotating, lower V room will
become large. V room will close against fluid sucked. Closed room
will be pushed forward along axle. Then new suction cavity
generates on suction end. One and one closed cavity move forward,
the fluid will be pressed out.