Description
6
GA 01.600/10.02 - 07/01
1 Description
The TRIVAC D 5 - 16 E are dual stage oil sealed rotary
vane vacuum pumps.
The number in the designation of the pump indicates the
pumping speed of this pump in m
3
· h
-1
.
These pumps are capable of pumping gases and
vapours out of vessels and vacuum systems down into
the fine vacuum pressure range. The standard pumps
are not designed to handle oxygen at concentrations
exceeding the concentration of oxygen in the atmosphe-
re. Moreover, these pumps are not suited for pumping of
hazardous gases or extremely aggressive or corrosive
media.
The drive motor of the TRIVAC D 5 to 16 E is screwed
directly to the bearing piece. The shaft of the pump and
the shaft of the motor are linked by a coupling piece. The
bearings in the inner pump body are force-lubricated sli-
ding bearings.
The oil level glass for viewing the minimum/maximum oil
level and the oil drain plug as well as the name plate are
located on the front of the pump.
The connection components, the gas ballast knob and
the oil fill plug are located on the top of the pump.
1.1 Principle of Operation
The rotor (2/6) which is eccentrically arranged in the
pump housing (pump chamber) has two radially sliding
vanes (2/7 and 2/9) which divide the pump chamber of
the pump into several chambers.
The volume of each chamber changes periodically with
each turn of the rotor so that the gas at the intake port
(1/1) is sucked in. The gas enters the pump chamber,
and after the admission aperture has been sealed off by
the vane, the gas is compressed and moved on.
The compressed gas is ejected from the pump chamber
through the exhaust valve. Oil which is entrained in the
gas is roughly separated by an internal demister and at
the same time any mechanical contaminations are also
removed from the oil. The gas exits the pump through the
exhaust port.
Oil injected into the pump chamber serves the purpose
of sealing and lubrication. The knocking noise (oil slap)
which normally occurs when the pump approaches its
ultimate pressure is avoided by injecting a small amount
of air into the oil so that a silencing effect is attained.
TRIV
AC
OUT
IN
OUT
IN
OIL
B
G
0
1
2
3
1
2
3
4
5
6
7
8
Key to Fig. 1
1
Intake port
2
Oil drain
3
Oil level indicator
4
Name plate
5
Oil fill
6
Exhaust port
7
Gas ballast valve
8
Mains power connection
Fig. 1 TRIVAC D 5 E rotary vane pump (other TRIVAC E models are similar)
Summary of Contents for D10E
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