Description
10
109030
3.2
Function
The outstanding feature of chemvac Combination Pump Systems in comparison to conven-
tional rotary vane pumps is that this special pump combination can pump solvent or acid va-
pors for long periods, even at low intake pressures, with hardly any problems.
The field of applications for the chemvac Combination Pump Systems
can be extended by
such special options as condensers on the pressure side, separators and filter.
Acidic or solvent vapors entering a vacuum pump are first compressed, but either do not or
only slightly condense because of the pump operating temperature and the under pressure
created in the oil casing via the diaphragm pump. (The under pressure is indicated by the
manometer that on the rotary vane pump is.).
The pressure at the manometer should be after reaching the work- / ultimate pressure in the
green range. This significantly lengthens the maintenance intervals.
This, in turn, substantially reduces the problems of disposing of contaminated pump oil.
Condensing vapors are captured in the downstream condensate separators.
3.2.1
Diagram of the layout of a chemvac pump system
1 -
2 -
3 -
4 -
5 -
6 -
Pressure port
Relief valve
Suction port
Diaphragm pump
Clearance space
Rotary vane pump
Fig. 2 Function scheme
