3 Product description
3.1 Function
The rotary vane pumps of the HenaLine are single-stage, oil-sealed rotary positive displacement pumps
with air cooling and circulatory lubrication. A non-return valve in the vacuum connection closes the in-
take line automatically when the rotary vane pump is switched off and prevents an operating fluid return
flow. The integrated oil mist filter cleans the conveyed gas and prevents the operating fluid mist from
being emitted at the exhaust. The operating fluid collected in the separator is supplied back to the rotary
vane pump. An operating fluid filter is also installed for cleaning the operating fluid.
Fig. 2:
Operating principle
The pumping system is made up of the housing, the eccentrically mounted rotor, and the centrifugally
sliding vanes, which divide the suction chamber into multiple chambers. The volume of each chamber
changes periodically as the rotor rotates. This causes the gas to be continuously drawn in at the vac-
uum connection and compressed in the suction chamber by the rotation of the rotor until the exhaust
valve opens against the atmospheric pressure and the gas leaves the suction chamber.
2
1
10
3
4
5
6
7
9 8
Fig. 3:
Structure of the rotary vane pump
1 Filler screw with manometer
6
Oil/air heat exchanger
2 Operating fluid separator
7
Float valve
3 Vacuum connection
8
Sight glass
4 Gas ballast filter
9
Drain screw
5 Exhaust connection
10
Motor
3.1.1 Operating fluid
The pump oil, also known as operating fluid, fulfills various tasks in a rotary vane pump:
Product description
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