Product description
Use
The va cuum pump is in ten ded for
–
the suc tion
of
–
air and other dry, non-ag gres sive, non-toxic and non-ex plo sive ga -
ses.
Con veying me dia with a hig her den si ty than air leads to an in crea sed
ther mal and me cha ni cal load on the va cuum pump and is per mis sible
only af ter prior consul ta tion with Busch.
Max. al lo wed tem pe ra ture of the in let gas:
See “Oil, Ambient tem pe ra ture range”
In case the va cuum pump is equip ped with a gas bal last (op tio nal), wa -
ter va pour wi thin the gas flow can be to le ra ted wi thin cer tain li mits
(see “Instal la tion and Com mis sio ning, Ope ra ting No tes, Con veying
Con den sable Va pours”). The conveyance of other va pours shall be
agreed upon with Busch.
The va cuum pump is in ten ded for the pla ce ment in a non-po ten tial ly
ex plo sive en vi ron ment.
The va cuum pump is ther mal ly sui table for conti nuous ope ra tion.
The va cuum pump is ul ti mate pres sure pro of.
Principle of operation
The va cuum pump works on the ro ta ting vane prin ciple.
A cir cu lar ro tor (o,15) is po si tio ned cen tri cal ly on the shaft of the va -
cuum pump. The shaft of the va cuum pump is dri ven by the drive mo -
tor shaft by means of a flexible coupling.
The ro tor (o, 15) ro ta tes in an also cir cu lar, fixed cy lin der(1), the cen -
tre line of which is off set from the cen tre line of the ro tor such that the
ro tor and the in ner wall of the cy lin der al most touch along a line. Va -
nes (n,22), sli ding in slots in the ro tor, se pa rate the space bet ween the
ro tor and the cy lin der into cham bers. At any time gas is suc ked in and
at al most any time ejec ted. The re fore the va cuum pump works almost
pulsation free.
In or der to avoid the suc tion of so lids, the va cuum pump is equip ped
with a mesh screen (h,261) in the suc tion connec tion.
In or der to avoid re verse ro ta tion af ter swit ching off, the va cuum pump
is equip ped with a non-re turn valve (251-254).
NOTE
: This valve shall not be used as a non-re turn valve or shut-off
valve to the va cuum sys tem and is no re liable means to pre vent suc tion
of oil into the va cuum sys tem while the va cuum pump is shut down.
In case the va cuum pump is equip ped with a gas bal last (op tio nal):
Product description
Page 3
h
a
g
o
n
f
m
i
j
k
d
p
l
b
a
Suc tion con nec tion
b
Gas dis charge
c
Ra dial fan
d
Oil fil ter
e
Name plate
f
Oil mist sep a ra tor
g
Dis charge valve
h
Mesh screen
i
Oil sight glass
j
Oil drain plug
k
Oil fill plug
l
Ex haust fil ter
m Level switch
n
Ro tor vanes
o
Ro tor
p
Oil
