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NORTH
AMERICA
Sicoma Strength PLANETARY
COUNTERCURRENT MIXERS
The
Sicoma high speed planetary / countercurrent concrete mixer is one of
the best in its class; its
design has been refined over many years, from an uncompromising basic design
that satisfies the perfectionist to the little touches that you expect
from a truly World Class European product. Over 8000 in use.
The planetary (or countercurrent) design has one or two mixing stars that
rotate themselves while also rotating around a central point, allowing each arm to
cover the whole mixer floor in a number of revolutions. This powerful
mixing action is both fast and thorough, resulting in a mixing time, after water
is added, of 30 seconds or less for most types of concrete. The result is
greater throughput, giving you more concrete per hour for the same size plant,
as well as better consistency and greater strength or, on the other hand, a
saving on cement. Sicoma's planetary design is superior to turbine and
twin-shaft designs for production of all types of dry-cast concrete. The
reason for this is its intense mixing action, which breaks up zero-slump mix
quickly.
Latest version may differ from picture at right.
Unlike others of similar design, the paddles and gears are arranged so that
every inch of the mixer floor is swept with high repeatability over 60 seconds of
operation., each arm sweeping an inch or so behind its previous path and
alternate arms covering the gaps so that,
even with blades removed from the arms, every particle of concrete would be moved. The
consequence is that the mixing action is good and the blades do not have to
be oversized to do it. Additionally, discharge is fast and complete
without the need for a wide scraper tail which creates dead spots in the mixer.
Frequently Asked
Questions on Sicoma planetary mixers
Download
printable brochure (297K)
Download data sheet (1.03MB)
These actual photographs and videos show the perfect mixing action of the Sicoma planetary mixer from 3 to 60 seconds after material is added. Note that
the floor is completely swept by the countercurrent action every 4 revolutions (10 seconds) and that each
zone is covered at regular intervals in time.
| Safe access
Safety is paramount in all Sicoma products. The MP's
half-moon cover allows almost a full 180 degree access on all models. And Sicoma's key-operated safety
catch guarantees that the motor cannot be powered with the cover open,
even if the disconnect switch is closed. Fully gasketted joints and a
grilled inspection hatch complete the package. The optional
hydraulic cover and
discharge door can still be operated if power is down by using the hand
lever on the hydraulic pump. |
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| Mixing blades
Ni-Hard cast iron blades are extremely hard wearing; they are also
easy to adjust and replace. In addition, they are wear-equalized;
compared with other, symmetrical designs, MP's blades are thicker on the
outside edge to exactly compensate the extra wear at these points.
Arms are identical, modular and the upper "fuse" spider arm bends or breaks away if jammed, reducing cost of
repair. Optional rubber, chromium carbide and tungsten carbide blades
are available for high wear and special applications.
Wear
comparison
for different materials
Hydraulic pump
Standard on all models, the hydraulic pump has a manual actuator to
open the discharge door if power is lost.
Water inlet is shown beneath pump. |
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| Cement and aggregate
inlets Optimal introduction of cementitious ingredients can
occur from either side of the mixer, as shown, so as to avoid the rotating
planetary gearbox, and in the center of the access cover on some larger
models. Aggregates are introduced at the side opposite to
the access cover, through a chute or the optional skip hoist. |
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| Water entry
The semicircular water spray bar is standard on models MP1875 and larger
(extra cost on smaller models). It gives optimum distribution of water
for all types of concrete; dry cast in particular. It is important to
charge the water within 15 seconds for fastest mixing action, and this
system is designed for the job. If feeding from a tank, a pump may be
necessary to reach the right speed. Note the anti-siphon U-tubes that
cut off water feed instantly; this is important when using a moisture
control system.
Optional spray nozzles
can be fitted to give a washout action on every batch. |
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| Optional skip hoist
Sicoma's matching skip hoist is tailored to the
mixer to guarantee "no-problem" installation. It can be
made with any height. Simplifies loading from a low-profile batch
plant, occupies less floor space and creates less dust than conveyor.
Optional discharge door covers
To allow easy inspection and access, the MP mixer
is intended for use with a raised sub-floor. When installed on a
mezzanine floor, hinged door covers are available; these are of expanded
steel mesh construction.
Optional air bag dust collector
To prevent the inrush of aggregates from forcing
out a cloud of dust, the air bag inflates to take up this extra air volume.
It gradually deflates during the mixing cycle to return the dust into the
mix.
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High pressure washout
The standard water outlets are spaced around a 180�
spreader bar, angled to give best water distribution (models MP1500 and
larger). High-pressure washout adds spray jets, angled to cover the whole mixer
interior, mounted on the underside of the rotating
mixing arms. This awesome washout system is powered by a powerful
high-volume pump. The pump can be shared with a second mixer or manual
spray wand.
Power washout system pictorial brochure
Pulverizer attachment
Some materials tend to form balls or clump.
This powered cutting blade option, powered through the MP's hollow drive
shaft, is effective in eliminating the problem.
Rubber cleaning blade
Wipes off moisture sensor on each revolution (see
right)
Other accessories
Many other Sicoma accessories and our custom
plant integration give you a turnkey plant based on proven equipment with
unique design features to guarantee perfect performance. |

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| Colors (applies to all models of mixer) Standard
colors are as shown at right:
Body of mixer, light grey
Safety covers and motors, royal blue
Skip and moving parts, safety orange
Other colors available at time of order (may delay delivery slightly). |
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series controllers take advantage of the MP's
high mixing speed to
give you more throughput per hour. Easy to operate and set up, MP's
mixing sequence can be programmed in different ways for different
formulas.
THE MP MIXING CYCLE
Although the
total cycle time is
dependent on the speed at which the charging takes place as well as the
type of concrete being produced, typically a batch of wet cast concrete
can be produced in less than 110 seconds, with dry cast, block
and paver mixes taking a little longer, depending on the type of
moisture/water dosing system employed. Note that some admixtures
require extra mixing time. The diagram below assumes
that the aggregates are waiting in a skip or hopper, ready for
discharge. Note the Premix time before water is added;
this is essential to proper mixing and fast mixing times. Mixer
discharge is from 20 seconds for repetitive loads to 40 seconds for full cleanout when running different colored products
etc. Contact us for specific applications.
Wet cast cycle (typical)
| Charge aggregates |
5s |
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Refill |
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| Charge cements |
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15 sec |
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Refill |
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| Premix time |
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20 sec |
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| Charge water |
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20 sec |
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Refill |
| Charge admixes |
Air |
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Other |
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Refill |
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etc. |
| Final mixing time |
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20 sec. |
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| Discharge time |
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16-36 sec |
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| Door close |
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4s |
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| Total cycle time |
Beginning to end = 100 to 120 seconds |
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Dry cast cycle (final water added as moisture is
monitored, see "Fast Micromix")
| Charge aggregates |
5s |
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Refill |
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| Charge cements |
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15 sec |
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Refill |
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| Premix time |
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20 sec |
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| Charge main water |
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15 sec |
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Refill |
| Charge admixes |
Air |
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Other |
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Refill |
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etc. |
| Add final water |
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30 sec. |
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| Final mixing time |
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40 sec. |
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| Discharge time |
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16-36 sec |
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| Door close |
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4s |
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| Total cycle time |
Beginning to end = 115 to 135 seconds |
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TECHNICAL DETAILS, ENGLISH /
METRIC:
| MODEL |
LOADING
CAPACITY
cu. yd. / cu.m. |
COMPACTED
YIELD
cu. yd. / cu.m. |
PAN
DIAMETER
inch / mm |
MIXING
MOTOR
HP / KW |
SKIP
MOTOR
HP / KW |
HYDRAULIC
POWER
PACK
HP / KW |
SPEED
rpm |
MIXING
ARMS |
WEIGHT
(without skip)
lb / kg |
WEIGHT
(with skip)
lb / kg |
| MP 75/50 |
0.1 /
0.075 |
0.07 /
0.05 |
28/700 |
2 /
1.5 |
0.75/0.55 |
1/0.75 |
22 |
3 |
441 /
200 |
882 / 400 |
| MP 150/100 |
0.2 /
0.15 |
0.13 /
0.1 |
39/1000 |
5.5 /
4 |
1/0.75 |
1/0.75 |
19 |
3 |
1102 /
500 |
1984 / 900 |
| MP 375/250 |
0.5 /
0.375 |
0.3 /
0.25 |
50/1260 |
10 /
7.5 |
2/1.5 |
2/1.5 |
19 |
3 |
2090 /
950 |
3080 / 1400 |
| MP 565/375 |
0.8 /
0.565 |
0.5 /
0.375 |
62/1580 |
15 /
11 |
3/2.2 |
2/1.5 |
19 |
3 |
3086 /
1400 |
4409 / 2000 |
| MP 750/500 |
1.0 /
0.75 |
0.7 /
0.5 |
72/1820 |
25 /
18.5 |
5.5/4 |
2/1.5 |
21 |
3 |
4409 /
2000 |
5953 / 2700 |
| MP1125/750 |
1.5 /
1.125 |
1.0 /
0.75 |
79/2000 |
40 /
30 |
7.5/5.5 |
3/2.2 |
20 |
3 |
5962 /
2700 |
8157 / 3700 |
| MP1500/1000 |
2.0 /
1.5 |
1.3 /
1.0 |
87/2200 |
60 /
45 |
10/7.5 |
5.5/4 |
21 |
3 |
7920 /
3600 |
10803 /
4900 |
| MP1875/1250 |
2.5 /
1.875 |
1.7 /
1.25 |
94/2400 |
60 /
45 |
10/7.5 |
5.5/4 |
15 |
6 |
10,362 /
4700 |
13008 /
5900 |
| MP2250/1500 |
3.0 /
2.25 |
2.0 /
1.5 |
102/2600 |
2x40/30 |
15/11 |
5.5/4 |
15 |
6 |
13,889 /
6300 |
18520 /
8400 |
| MP3000/2000 |
4.0 /
3.0 |
2.7 /
2.0 |
135/3420 |
2x50/37 |
2x15/2x11 |
7.5/5.5 |
14 |
6 |
21,385 /
9700 |
26457 /
12000 |
| MP3750/2500 |
5.0 /
3.75 |
3.3 /
2.5 |
135/3420 |
2x60/45 |
2x15/2x11 |
7.5/5.5 |
14 |
6 |
21,385 /
9700 |
26457 /
12000 |
Skip speed is 49ft/min, 0.25m/sec
for all sizes up to MP2250/1500.
For sizes MP3000/2000 and MP3750/2500, speed is 59ft/min,
0.3 m/sec.
Download
printable brochure (297K)
Download data sheet (1.03MB)
[ MP slide show ] [ download MP Order Definition Form ]
With Sicoma planetary /
countercurrent mixers
producing your concrete,
your company will save
money and increase profits.
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