GD AQUALINE 1100 Installation & Operating Instructions Manual page 4

Mode of operation, Design versions
Mode of operation, Design versions
Mode of operation
Liquid compressor vacuum pumps, like rotary com-
pressor vacuum pumps, work on the displacement
principle, providing uniform, low-pulsation flow.
Single-shaft liquid ring machines have a housing with
cylindrical bore and an eccentrically mounted rotor.
The housing is partly filled with liquid, which the rota-
tion of the rotor forms into a rotating liquid ring in con-
tact with the housing. Together with the hub of the
eccentrically mounted rotor, it forms a sickle-shape
working space divided by the vanes of the rotor.
The rotation of the rotor causes the cell volume to be-
come large at the intake side. This creates a vacuum
which sucks air into the cell, which is open towards the
air intake. As the rotation continues, the cell closes and
the cell volume becomes smaller. As a result of this,
the enclosed air is compressed and pushed out of the
pressure outlet.
The cells are charged and drained through openings in
the housing covers located on either side of the rotor
faces.
This functional principle causes the machine to work at
nearly isothermal compression due to internal cooling.
The first digit of the references to illustrations
in these Operating Instructions refers to the
chapter in which you find the illustration. The
illustrations within each chapter are numbered
consecutively. The last number of an illustra-
tion reference denotes the position number of
the item in the references illustration.
For example, the reference (7.2 / 3):
second illustration in chapter 7, item number 3.
This symbol precedes information that refers
to units used in a potentially explosive atmos-
phere.
4990671000 February 2008
Design versions
The design versions differ in their direction of rotation.
Type code:
AQUALINE 2100
Liquid ring pump, Machine size
operating
1)
medium: water
1)
Water is the working liquid commonly used by suction vehicles.
4
R
R = CW rotation
L = CCW rotation