With the new PTAD 20 mini double-vessel conveyor from Gericke, Regensdorf, Switzerland, a dilute phase pneumatic conveying system can easily and quickly be converted into a dense phase system. There are products which cannot be transported efficiently in a dilute phase conveying system. On the one hand, sensitive products may suffer from considerable attrition whereas abrasive products may cause excessive wear to the system. To convert from dilute phase to dense phase, mini vessels can be installed directly below the storage device in place of a rotary valve. This offers the following advantages:

• Extremely gentle conveying
• No demixing
• No wear to pipework and valves
• No rotating parts in contact with product
• Drastic reduction of conveying air and energy consumption.

The PTAD 20 twin vessels permit dense phase conveying in extremely restricted spaces. The system is made up of two 20-litre pressure hoppers (vessels) and is operated in continuous mode. The vessels are either supplied with an inlet manifold or directly connected to the downstream process. The low-profile construction of less than 750mm permits installation of the double vessels in place of a rotary valve. Throughputs of 4-10m3/h can be achieved depending on selection of the piping (DN65 – DN100) and product to be handled.
Several conveying systems of this type are already operating successfully in the food industry handling milk powder, whey powder, gelatin granulates and powders as well as various premixes. The PTAD 20 system will be exhibited by Gericke next month at SCHÜTTGUT, Dortmund (Hall 4, Stand G16). www.gericke.net

Gericke can offer customer trials with its PTAD 20 system at its test centres
 

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