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.
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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Fig. 3:
Structure of the rotary vane pump
1 Crane lug
8
LED A1 for pump status during operation
LED A2 for communication status (behind the cover)
2 Control input
9
Electronic drive unit
3 Mains supply plug
10
Operating fluid separator
4 Motor
11
Exhaust filter
5 Filler screw
12
Vacuum connection with DN 40 KF
6 Sight glass
13
Exhaust connection with DN 25 KF
7 Drain screw
14
Vacuum pump axial fan
3.1.1 Operating fluid
The pump oil, also known as operating fluid, fulfills various tasks in a rotary vane pump:
● lubrication of all moving parts
● filling part of the dead volume under the exhaust valve
Product description
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