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Sieving machines are available in various designs such as linear sieves, tumbler sieves, and vibrating sieves each employing a different sieving action. The choice of a suitable sieving machine depends on the desired particle size distribution, required amplitude and frequency of vibrations, and the physical state of the mixture. Sieving machines are used for removing dust from granular products and for grading grains. They are also used for the classification of granular material and the separation of solids from a slurry mix in the food processing industries.

Sieving

Flour processing technology has changed drastically since the days of the millstone pulled by a mule. But demand for more refined flour means that the production process is now slower than with more rudimentary techniques. When mixed with water, protein in wheat flour form an elastic gluten structure, giving bakery products their irresistible fluffiness.

Flour

Separating particles in difficult-to-process materials for processes in the food and chemicals industries can be inefficient and time-consuming. Utilising vibration technology to sieve such materials gives vastly improved performance, and the latest technologies mean even greater productivity is now available.


<h2>Patented vibration technology sieve for maximum performance</h2>
The Virto CS 065.1 X series vibratory sieve has been specifically designed to handle difficult materials with increased performance over traditional vibratory sieves.

The CS 065.1 uses a patented system developed by the manufacturer known as MFVexcite. This technology converts traditional single-frequency oscillation into a multifrequency movement. Thanks to this development, the material acceleration transmitted to the mesh reaches 500G, instead of the 5G delivered by standard sieves. This means class-leading performance of up to 99% particle purity in materials that are difficult (or traditionally impossible) to screen, such as high viscosity or abrasive slurries.

The single-deck CS 065.1 can be tailored to suit your specific needs and is 950mm in diameter. Featuring all-stainless steel construction for contact parts, the unit can also be offered with mirror finish polish to these areas for use where hygiene is required.

Because it uses two motors operating in synchronisation at lower speeds, the CS 065.1 uses less energy than traditional vibratory sieves, reducing running costs and increasing lifespan.

Finally, the CS 065.1 has a wide range of options including clean in place (CIP) system, a variety of stands, pneumatic lifting, and a variety of connections to meet your requirements.

Multifrequency sieve for separation of difficult particles

For large scale production processes in the chemicals or food industries that require the coarse or fine screening of difficult materials, traditional sieves do not provide sufficient throughput. A high volume rectangular sieve can process large quantities consistently, and the addition of multifrequency vibration makes them capable of extremely high efficiency.


<h2>Specialist heavy-duty sieve for large scale industrial processes</h2>
The RS 2010.1 from Virto has been conceived specifically for the coarse to fine separation of particles from large volumes of dry materials and powders, but is also available in a special version for use with liquid slurries. Designed to be robust enough to handle heavy industrial and mining/quarry use, the RS 2010.1 is also suitable for lighter and more delicate materials such as metal powders and fine particulate slurries.

Driven by a single energy efficient motor consuming only 2.8kW, the RS 2010.1 uses patented MFVexcite technology to create multifrequency vibrations. This accelerates the particle impact to the mesh from the typical 5G found in standard equipment to 500G. As well as increasing screening effectiveness this also eliminates clogging of the 1.6m2 mesh surface.

Constructed of solid carbon steel as standard, it is also available in stainless steel for speciality operations. The RS 2010.1 has been built to withstand extreme operating conditions and environments with minimal maintenance and downtime.

High volume particles separation sieve

For the classification of delicate granular material, screen tumblers make an excellent alternative where high throughput is still required with gentle handling. This is important to many processes in the chemicals, pharmaceuticals and food industries, where traditional vibratory sieves and graders are too harsh for delicate materials.


<h2>High capacity tumbler for delicate, dry materials</h2>
The Virto VTU 2400 is a purpose-designed high capacity tumbler sieve capable of achieving up to 95% efficiency for particle sizes as small as 20 microns.

Especially suitable for multi-stage separation of fine, lightweight and difficult to screen products, the VTU 2400 uses three-dimensional movement for class-leading performance with powders and granules. The exact nature of the movement can be adjusted to suit your requirements.

The tumbler screen can use meshes down to 20 microns, can be supplied with anti-clogging systems composed of FDA-certified rubber spheres or ultrasound systems to your specification.

All product contact parts are constructed of AISI 304 stainless steel, and ATEX certification and full FDA conformity is available on request.

The VTU 2400 is available with 1 to 5 sieving decks, and offers a total mesh size of 4.5m2 for maximum productivity.

Solidly built for enhanced reliability, the VTU 2400 tumbler sieve is energy-efficient and quiet in operation, making it suitable for a wide range of applications.

Tumbler sieve for classifying and dedusting granular materials

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Flour sieving

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Multifrequency sieve for separation of difficult particles

High volume particles separation sieve

Tumbler sieve for classifying and dedusting granular materials

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