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VACUUM CONVEYORS & BULK MATERIAL HANDLING SYSTEMS Systems and solutions for the clean, efficient and secure handling of bulk material

TABLE OF CONTENTS What is vacuum conveying? What can be conveyed? (References) How vacuum conveyors work VOLKMANN vacuum conveyors / Material flow Application examples VOLKMANN vacuum conveyor VS VOLKMANN vacuum conveyor PPC VOLKMANN INEX vacuum conveyor (nitrogen inert) Systems for handling bulk material Accessories for vacuum conveyor Vacuum pumps

What is vacuum conveying? Transportation of bulk material Vacuum conveyors are generally used to transport bulk materials. As a general rule, the term ‘bulk materials’ usually refers to powder and granules, wherein - up to a certain particle size - tablets, pills, capsules, flakes, pellets and even larger pieces are conveyed. Through the use of special vacuum generators which can achieve a high vacuum level, it is also possible to transport liquids and viscous media (for information, refer to the VOLKMANN wet vacuum). avoided, whether this is to protect staff or the environment. Vacuum...

Transportation of bulk material Our database of over 2000 tested materials is constantly growing; however, we recommend that vacuum conveying trials are carried out in order to accurately determine the flow rate. This can be achieved in our laboratory and/ or on-site. The number of parameters (specific to the bulk material and installation-related) are so diverse that advanced calculation of the flow rate can only be indicative. Even chemically identical substances can behave very differently when conveyed as a result of various manufacturing processes. Our wealth of experience and the use...

VOLKMANN IDEAS AHEAD Reference products from the fields of chemical, pharmaceutical and food Cherries (preserved) Grated coconut Coriander Herb salt Granulated sugar Lactose Licorice powder Skimmed milk powder Corn starch Maltodextrin Almond powder Flour Mentos* Milk powder Whey powder Nutmeg shell Sodium bicarbonate Bicarbonate of soda Paprika powder Peppermint Pepper powder Horse feed additives Chanterelle mushrooms Popcorn Icing sugar Puffed rice Rice/Millet Reis Krispies Beetroot mixture Cream fat powder Salt Snuff Chocolate sprinkles Smarties / M&Ms Breadcrumbs Soybean Soy flour...

How vacuum conveyors work Entrainment, transporting and feeding – VOLKMANN provides maximum benefit Entrainment All materials can be entrained directly from production/processing plants and almost all forms of transport containers. For this we offer, among other things: manual suction lances, feeding and docking elements for on-site equipment, containers and silos, material feeding stations for drums, sacks and bulk bags. Vacuum conveyors The transported material is moved in small batch cycles and delivered to the receiving vessel. The transported material is directly fed to the system or...

Working sequence Vacuum pump produces negative pressure in the separating container of the vacuum conveyor. Air is sucked through the intake opening (^lof a product feeding station and material for transportation is moved. The vacuumed air passes through the filter system inside the separating container depositing material and it accumulates there. In the case of fine dust, an additional cyclone insert (used in the separator |^) allows for higher flow rates due to lower filter surface load. After the separator container is filled, the vacuum pump is switched off. The pressure in the...

How vacuum conveyors work Construction of a vacuum conveying system Design To design a vacuum conveying system is both easy and difficult at the same time. To allow a first assessment for the design and construction of the vacuum conveying system we need to consider product characteristic such as bulk density, particle size, flow characteristics and then add the desired transport capacity, conveying distance and heights into the mix. Selecting a conveying method typically involves considering a wide range of potential issues:- Is the product reactive components of dishwasher tabs neoprene...

Possible conveying conditions in the conveyor line Essentially, the overall difference in pressure in the conveyor line is a result of the quantity of the conveyed material in the line, its flow properties, the conveyor height (which has to be overcome) and the layout of the feeding station / line design. In addition, the vacuum generator must be able to overcome the overall pressure loss and at the same time, generate the necessary flow speed (air flow based on the conveyor line cross-section) in order to transport the conveyed material. For a stable conveying process, it is important that...

Often, the various processes (e.g. chemical engineering) mean that different powders and granules have to be conveyed with one conveyor (e.g. various colour and coating powders in the paint and coatings industry). The vacuum conveyor should then be set up as simply as possible and allow for easy disassembly and cleaning. At the same time, the selected container material must be resistant to cleaning agents and corrosive chemicals. This is why the tried and tested stainless steel modular design is used. On the one hand, it ensures a quick changeover between product and on the other hand, it...

For reliable conveying, various radial and tangential suction port designs are available. In particular, small conveyor units can be designed in conjunction with the multi-stage air-powered vacuum pumps. These can be used in a stationary or mobile situation. As high negative pressure may develop in the case of plug conveying, the container system must also be able to withstand the high vacuum levels. The transport capacity is catered for depending on the size of the separator container/filter surface, the vacuum pump, the design of the line and the quantity of feeding air that is added. The...

Material flow Feeding and delivery systems in a vacuum conveyor VOLKMANN vacuum conveyors are used throughout industry where critical design makes a difference: ∙∙ high levels of hygiene when transporting materials ∙∙ easy dismantling and cleaning of all components that come into contact with the product ∙∙ high operational safety and reliability ∙∙ the avoidance of risks of explosion ∙∙ the material quality and consistency of the components that are used Collection directly from: ∙∙ Feeding hoppers ∙∙ Bulk bags/FIBCs ∙∙ Silos ∙∙ Drums ∙∙ Sacks ∙∙ Sheets Direct loading of: ∙∙ Stirred tanks...