KNF N96 - 5 Design and function; Pump Design Overview; Diaphragm Pump Functionality

Diaphragm pump N96 Design and function
Translation of Original Operating and Installation Instruction, English, KNF 316836-316838 01/20
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5 Design and function
Design
1 Pneumatic pump inlet
2 Pneumatic pump outlet
3 Motor
4 Electrical connection
Fig.3 Design N96
Function of a diaphragm pump
1 Outlet valve
2 Inlet valve
3 Transfer chamber
4 Diaphragm
5 Eccentric
6 Connecting rod
7 Pump drive
Fig.4 Function of a diaphragm pump
Diaphragm pumps transfer, compress (depending on the version) and evacu-
ate gases and vapors.
The elastic diaphragm (4) is moved up and down by the eccentric (5) and the
connecting rod (6). In the downwards stroke, it aspirates the gas to be trans-
ferred via the inlet valve (2). In the upwards stroke, the diaphragm presses the
medium out of the pump head via the outlet valve (1). The transfer chamber
(3) is hermetically separated from the pump drive (7) by the diaphragm.