LEYBOLD ScrewLine SP250 - Page 22

Description
22
GA02412_002_C0 - 10/2016 - © Leybold
Fig. 1.1 Principle of operation of a screw pump
Fig. 1.2 Compression principle and the direction of pumping action within a screw pump
Casing
Intake side
Rotors (screws)
Direction of flow
Discharge side
Direction of rotation of
the shafts
Fig. 1.3 pV diagrams of screw pumps
(a) (b) (c)
without inner compression with inner compression against
the face side of the pump
chamber
with inner compression
along the rotor
(SCREWLINE)