Design and function
Swing Piston vacuum pump NPK012
10
Translation of original operating and installation instruction, Englisch, KNF 316780-316783 05/19
Function of swing piston pump
1
Inlet valve
2
Outlet valve
3
Transfer chamber
4
Retainer plate
5
Sealing lip
6
Eccentric
7
Connecting rod
8
Compressor housing
Fig. 2 Function principle of swing piston pump
Swing piston pumps transfer, compress and evacuate air.
The swing piston, consisting of retainer plate (4) and sealing lip (5), is moved
up and down by the eccentric (6) and the connecting rod (7). In the down-
wards stroke, the swing piston aspirates the gas to be transferred via the inlet
valve (1). In the upwards stroke, the swing piston presses the medium out of
the pump head via the outlet valve (2). The swing piston is sealed at the pump
housing by a sealing lip (5) and functions oil-free.
Summary of Contents for NPK012 Series
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