ScrewLine vacuum pumps are dry compressing backing pumps, the
operation of which is based on the screw principle. The pumping
chamber of the pump is formed by two synchronised positive
displacement rotors and the housing enclosing these. Since the
rotors rotate in opposite directions, the chambers move steadily
from the intake to the exhaust side of the
pumps thereby resulting in a smooth pumping action (see figure
below).
Since with a single ScrewLine rotor pair a multistage compression
process is implemented, the
component count in the pumping path is very low. In this way
maintenance and servicing work is much simplified.
Properties The direct pumping path without multiple deflections for the
medium make the ScrewLine vacuum pumps highly insensitive to foreign
materials. This ensures a high uptime in
industrial processes.
The two shaft-sealed non-contacting and thus practically wear-free,
which allows for very long maintenance intervals.
For standard applications no purge gas is required. However, a purge
gas supply can be connected as an option to purge the seals, should
the application process require this.
Because of the cantilevered bearing arrangement for the ScrewLine
rotors, a potential source of failure (i.e. a bearing on the intake
side) is entirely eliminated. On the one hand, no
lubricants from the bearings can enter into the vacuum process, and
the other hand also an impairment of the bearing by aggressive
process media can be excluded.
A further benefit of the cantilevered bearing arrangement is the
easy accessibility of the pump chamber.
This innovative design feature allows the removal of the pump
housing without time-consuming and costly disassembly of the
bearings. Thus on-site cleaning of all surfaces in contact with the
medium is possible.
In particular, if the processes involved considerable amounts of
contaminants this is a significant advantage which ensures a long
uptime.
Besides the integrated oil cooling arrangement for the rotors, the
ScrewLine pumps are air-cooled from the outside. Here rotor and
housings are thermally linked via the oil cooler.
Thus ScrewLine pumps adapt themselves ideally to the ambient
conditions under changing operating situations.
A water-cooled version is offered as ScrewLine SP630 F. This product
version is intended for operation in air-conditioned rooms.
The ScrewLine offer is completed through ATEX-certified variants.
For a PDF file of this product please contact us here.
file.
