The basis of all air—operated appliances such as filters, is the use of
the air—lift principle which works in the following
(see 4F1gure
_
25); If the unconnected air-lift assembly is placed inside theaquar1um‘
the water
pipe automatically levels with that outsrde.
_
—-————
‘
Water out
:Ë:°o°:gî;
«
:Z}::Z:«
Lift tube
_
‘
Air—water mixture ascending
-_
,
—
::::°:::
_
.
Air supply
.
_
_
,
‘
'2°o°o:Ë:'
,
,
/
_
‘
Mixing thàmber
__
‘
,
-
'
’
.
'
'
Diffuser stone
‘
.
_,
'
-
Water in
_
‘
_.
"
î
,
,
Fig. 25.Function of the air—liftm‘echànism Α
_
_
"
…-:p When air*isÏnowiritrçädaçeçl at the base of the”pipe,bübble‘S “form“ and"
ri‘XtlireïiS
therefore rises up the pipe…
_'
this
thetop*in acontlnuous Ï,—:‘
process and Water—is
below Thusa c1rculat10n
._
up
_
ami 111,
Out—sideîltà; water w111be moved frmone
tothe _._o‘thzeri The eff1c1ency of
a1rlt15bestwhen-‘ât
__
lnlectedmsupplÿlsmcreasedtô1mpr®V€thewïtefowap0mt
lameter©fthehfttub€mŒerteallüwthelargerfl®wfpass
threugh Ifth1s1snotd@netheauwlnœtmmpmperlyW1ththe
5
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