A wide range of mixers and customized solutions

The size of SICOMA Twin Shaft Mixers ranges from 0.5 to 9 m3 of vibrated concrete output, covering every need of our customers in terms of production capacity. The excellent performance is recognized in several applications: production of Readymix Concrete, production of prestressed / precast elements, RCC concrete for dams, soil stabilization, but also in different sectors such as the inertization, waste treatment and chemical products. Depending on the type of application, the mixers can be equipped with several accessories and options to optimize their productivity, mixing quality and life expectancy. Whenever necessary, we work with our customers to develop new solutions that best suit their requirements.

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Product Info

Gearboxes

The gearboxes of the mixing group are epicyclical type. The first reduction is carried out by a pulley transmission equipped with a constant-velocity universal joint to keep the shafts syncronised. The low input speed to the gearboxes allows the lubrication oil to work at low thermal load. The connection between the gearbox and the tank is made with the exclusive connection sleeve, developed over the years to make any possible maintenance to the shaft supports easier and faster. This sleeve can be disassembled easily giving access to shaft support and in case of maintenance, the downtime for the plant is minimized.

Mixing Elements

The mixer tank is lined with Ni-Hard Cast Iron of 530HB minimum hardness. The mixing arms, with a low profile to avoid material build up, are made in Spheroidal Cast Iron. The mixing blades are made in Ni-Hard Cast Iron of 530HB minimum hardness. The large number of blades, their position and their orientation guarantee the right combination between the effects of rolling and circulation of the material during the mixing action.

Extra Rigid Tank

Hydraulic Power Pack

Discharge Door

Shaft Supports & Seals

Alarm Box

The mixer is equipped with several sensors: thermal sensors for the motors and for the gearboxes, level gauges for the oil of the gearboxes and for the hydraulic power pack, level and pressure sensors for the automatic lubrication system. Upon request, Sicoma can supply the Black Box, an electronic system that records type, number and duration of possible anomalies and alarms during the operation of the mixer. The same device can be programmed for the preventive maintenance.

Top Cover & Inspection Platform

Top Cover and Inspection Platform

The high top cover (500mm) is equipped with two hinged hatches and does not have any post. It allows an easy access to the mixer for an accurate cleaning at the end of the shift or for both preventive and unscheduled maintenance resulting in a shorter shutdown of the plant. The inspection platform with stairs, included in the supply, is absolutely necessary for the safe inspection and maintenance of the mixer. Its effective modular design allows the installation to be extremely easy without the need of any crane or winch.

Product Options

Swing Out Drives (SWOD Option)

This unique option for SICOMA Twin Shaft Mixers was developed over the last years to make any maintenance to the shaft supports easier and faster . The full drive assembly (Motor, Pulleys and Gearbox) is hinged to the side of the mixer tank and it can be swung out easily without the need of cranes or any lifting device.
In case of unplanned maintenance, the downtime for the plant is minimized, resulting in a extremely low maintenance cost.

Skip Hoist

The loading skip for the aggregates is available for the MAO mixers up to the size 6000/4000. The hoist has two grooved drums on the same shaft.
The skip cable has an anti free-fall block in case of cable failure while two limit switches constantly check its tension. Upon request, the double speed for ascent and descent is available, as well as an inverter based controller to customize speed at its best.

Batch Feeding System

Due to the particular reinforced structure, SICOMA Twin Shaft Mixers can be equipped with a Batch Feeding System stacked on the tank using the top fixing plates on the tank frame. This system is composed by Aggregates Holding Hopper, Cement Scale, Water Scale and Air Bag. Being everything preassembled at the factory before the shipment, the installation time at the jobsite is extremely short.

High Pressure Washout

Slow Motion Drive

This option is based on an auxiliary motor which can rotate the shafts at low speed (1 RPM). By using a button switch, the shafts can run safely also with the inspection doors open. The cleaning as well as the regular maintenance (such as periodic blade adjustment) are simplified and faster. We recommend to choose the Manual Control Panel including all devices to operate the Slow Motion Drive.