5 Functioning
AL HPM
5.1
Function description
The Alfa Laval Hybrid Powder Mixer (AL HPM) is a combination of two technologies (powder mixer and pump) and is mainly
used to disperse solids (power or crystals) in fluids. Because of the high pressure that the HPM can generate, even during
powder intake (up to 4 bar), it can also be used as a mobile feed or discharge pump or as a CIP pump.
The powder to be mixed is delivered to the HPM via the funnel (item 1 in Figure 1) and homogenised or dispersed in the
fluid flow with the aid of a rotor-stator system in the first stage (item 2 in Figure 1). In the second stage, the mixture is then
discharged from the equipment with the aid of the impeller (item 3 in Figure 1). During this process, a product sub-flow is
recirculated via a second (smaller) connection (item 4 in Figure 1). This sub-flow is introduced into the injector (item 5 in Figure
1). This generates a negative pressure at the funnel outlet, which in turn allows the powder to be drawn in. NOTE: The function
is the same on the stationary HPM-S15 version shown on figure 2.
(A)
(B)
(C)
4302-0008
Pos. 1: Funnel
Pos. 2: Rotator/stator system
- 1
st
stage
Pos. 3: Impeller
Pos. 4: Circulation
Pos. 5: Injector
A: Inlet
B: Outlet
C: Flow
Figure 1
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Figure 2
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