Diaphragm Vacuum Pumps N 813
Assembly and function
Translation of original Operating and Installation Instructions, english, KNF 121240-121506 09/19
15
Assembly of N 813.4 ANDC -B und N 813.4 AN.29DC-B
1
Inlet (suction side)
2
Outlet (pressure side)
3
Pneumatic connection
4
Motor
Fig. 5: Assembly of N 813.4 ANDC-B und N 813.4 AN.29DC-B
How diaphragm pumps work
1
Outlet valve
2
Inlet valve
3
Working chamber
4
Diaphragm
5
Eccentric
6
Connecting rod
7
Pump drive
Fig. 6: Pump head
Diaphragm pumps transfer, compress (depending on pump ver-
sion), 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 N 813.3 AN.29DC-B
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