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Conveying Systems and Pneumatics in Milling

09 November 20172 min reading

“In the solutions of conveying problems at the flour plants, generally pneumatic and mechanical conveying systems are used. There is no way to choose only one between two systems. Because these systems have different features and differ by their places of use.”

panomatikMustafa SEBER Dura Makina San. ve Tic. Ltd. Şti

Conveying Systems are necessary at the flour plants, as they are in many factories, in order to keep the substances available at the relevant points for production and storage or convey them to these points.

In the solutions of conveying problems at the flour plants, generally pneumatic and mechanical conveying systems are used. There is no way to choose only one between two systems. Because these systems have different features and differ by their places of use.

To illustrate, for the conveyance of the raw material (wheat, grain) generally mechanical conveying systems are used, particularly if we are not talking about low capacities and long horizontal lines. The most important problem here is abrasion at the conveying systems and the cost of energy. As for the conveyance of flour and other products (bran, wholemeal flour), pneumatic high pressure systems (blower) are used.

Proper areas of usage for pneumatic conveying systems at the mills

Pneumatic systems are used; - At low pressure loss (300 mmSS) and low air velocity, aspiration and dust suppression systems, at destoning, descaling and ventilation of wheat; - At medium pressure loss and air velocity (600 – 1000 mmSS), at conveyance of passages; - At high pressure loss and air velocity (5000 mmSS), at storage and packaging departments of finished products

At pneumatic conveying systems, energy consumption -due to friction of substances- and crash and abrasion -due to strain of substances - are seen at high levels. On the other hand, since the transaction of conveyance is carried out through pipes it is possible to install a more flexible conveyance line in every direction. As for mechanical conveyance, conveyance can be carried out only along a straight line.

Besides, because the conveyance is carried out through pipes, it is easier to avoid pollution and contagion in pneumatic systems. Another important advantage of this system is that the malfunction probability and costs of maintenance and repair are extremely low. Because peeled and annealed substances and finished products don’t have abrasive characteristics.

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