Liquid End - ProMinent S1Cb Operating Instructions Manual

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s
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5.2 Liquid end

Normal
a)
s
t
0
P_SI_0120_SW
Fig. 7: Stroke movement at a) maximum stroke length and b) reduced
stroke length.
t Stroke velocity
⍵ Cam rotational angle
+ Discharge stroke
- Suction stroke
Discharge opti.
With a discharge optimised dosing profile, the discharge stroke is elon‐
gated, the suction stroke is executed as quickly as possible. This setting is
for example suitable for those applications that require optimum mixing
ratios and as continuous as possible chemical mixing.
t
P_SI_0103_SW
Suction opti.
With a suction optimised dosing profile, the suction stroke is elongated as
much as possible, which makes possible a precise and problem-free
dosing of viscous and gaseous media. This setting should also be chosen
to minimise the NPSH value.
t
P_SI_0104_SW
The diaphragm (2) hermetically shuts off the pump volume of the dosing
head (4) towards the outside. The suction valve (1) closes as soon as the
diaphragm (2) is moved in to the dosing head (4) and the feed chemical
flows through the discharge valve (3) out of the dosing head. The dis‐
charge valve (3) closes as soon as the diaphragm (2) is moved in the
opposite direction due to the vacuum pressure in the dosing head and
fresh feed chemical flows through the suction valve (1) into the dosing
head. One cycle is thus completed.
b)
s
ω
180 360
Functional description
0 180 360
P_PL_0009_SW
ω
21