|
|
|
| |
|
| |
| |
|
|
| |
|
| |
Three-part cycle |
| |
| |
|
| |
Twin-shaft Blender
|
| |
The twin-shaft
batch blender has become the widely preferred technology
for many applications worldwide. There are mixing blades
on both mixing shafts that are geometrically arranged
so they follow the pattern of an interrupted spiral. This
transports the materials to be mixed in a screw-like movement
along the mixing shafts and on each shaft in opposite
directions. |
| |
|
| |
Toward the end
of each shaft, the mixing blades are positioned in counter
direction so they can transport the mix onto the opposing
shaft. This way, the materials are constantly rotated
around the mixing vessel. At the same time, this material
rotation process takes place in an inward turning spiral.
This results in an intensive three-dimensional movement
of material. |
| |
|
| |
Intense mixing |
| |
The two mixing
circuits overlap in the middle to further increase the
intensity of the relative motion. This creates a high
turbulent zone in the middle of the mixing vessel and
further intensifies the mixing significantly. it's possible
to achieve 95% of homogeneity with only 30 seconds of
mixing time. This can be achieved with a relatively low
speed of the mixing shafts of only about 20 to 30 rpm.
This saves energy, reduces wear, and avoids stress on
the particles to be mixed. |
| |
|
| |
Discharging
is accomplished in a twin-shaft batch mixer along the
middle of the vessel underneath the two shafts using a
rotary sliding gate. A major portion of the mixed materials
empties when opening the gate because of gravity. The
rest is pushed out of the opening by the broad mixing
blades, leaving almost no remaining residue. The risk
of mix segregation is therefore extremely low. |
| |
|
| |
|
| |
|
|
