RIBBON MIXERS DESIGN
The ribbon mixers built by GIMAT have volumes available in a range from 340 to 3,500 liters with variable power depending on the applications, from 3 kW to 30 kW. Different dimensions and capacities can also be considered and supplied.
The thick plates are also ribbed to withstand the stresses applied during mixing which is rapid and uniform thanks to the special 4-lane ribbon and four crossed flows.
The direct transmission (by means of a helical bevel gear motor, integrated with elastic coupling with torsional flexibility) ensures high performance of the entire kinematic chain and extremely quiet operation.
The inserted joint dampens vibrations and reduces the maximum impact load thereby creating an actual shock absorber for the rotary motion.
The gearmotor is driven by vectorial inverter to permit gradual startup of the mixer even when fully loaded, and rotation speed can be adjusted depending on the percentage of filling and type of blend.
The mixing ribbon supports are made with oscillating bearings installed on special thick plates, adjustable in height, to find the perfect planarity between the rotor (ribbon) and the mixing vat, and reduce to a minimum the clearance between the static and rotating parts. In this way, mixing efficiency is improved and the residues of product left after emptying are reduced to a minimum.
The particulate seals on the headers are designed to be replaced quickly from the outside in case of wear or cleaning in case of frequent changes of the products mixed.
Special rotating elastomeric seals have been designed ad hoc, according to MOCA directive 1935/2004, which have on the one hand the advantage of traditional packings that they are easy to replace and wrap around the rotary shaft, but at the same time do not stretch and ravel the way packings do
This prevents the risk of contaminating the mixture with possible foreign bodies and minimizes the need for frequent adjustment required by packings to restore the seal on the rotating shaft.
The top cover is made to the customer’s specifications and is complete with inspection hatches and openings for adding products.
Emptying is central via the outlet which can be controlled manually or pneumatically.
- Electric control panel.
- Supporting frame to raise the discharge off the ground
- Weighing system on loading cells
- Preparation for filling and discharge with flexible spiral or rigid screw conveyor by GIMAT
- Mixer suitable for pneumatic vacuum filling
- Top cover can be fully opened to optimize cleaning and product change
- Anti-explosion panels and flame block for venting explosions from the inside
- Special versions to satisfy specific needs
Upon request the powder mixers can be designed and built in conformity to ATEX Directive 2014/34/EU Zone 2 – 22 / Zone 1 – 21