Vacuum Pump System SC/SEM/SH/SR950
Assembly and function
Translation of original Operating Instructions, English, KNF 125549-125552 07/18
23
5.5. Pump
Assembly
1
Outlet valve
2
Inlet valve
3
Working chamber
4
Diaphragm
5
Eccentric
6
Connecting rod
7
Pump drive
Fig. 7: Pump design
How diaphragm pumps work
Diaphragm pumps transfer, compress (depending on pump
version) and evacuate gases and vapors.
The elastic diaphragm (
4
) is moved up and down by the eccentric
(
5
) and the connecting rod (
6
). In the downward stroke it aspirates
the gas to be transferred via the inlet valve (
2
). In the upward
stroke, the diaphragm presses the medium out of the pump head
via the outlet valve (
1
). The diaphragm hermetically seals the
working chamber (
3
) from the pump drive (
7
).
Summary of Contents for SC 950
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