Ventilatorenfabrik Oelde GmbH products

Large and special fans from Venti Oelde are used in almost all key industries. They are the “heart” of industrial plants and processes, as they are mostly in use around the clock, for example in the cement and steel industries as well as in the chemical industry and refining plants, in power stations and waste incineration plants. Other areas of application are the mining, food, glass and woodworking industries, to name just a few.

Material transport fans are mostly used in the wood industry, but solid particles are also pneumatically transported in many other industrial applications. Even when the requirements are extreme, our material transport fans ensure that material flows reliably.

Venti high-pressure fans combine intelligent technology with outstanding quality. Venti high-pressure fans can be used in almost limitless ways, but especially as pressure-increase fans in industrial processing and chemical engineering, for the fluidisation of powders, dusts and granulates in the cement, paint and plastics industry, as forced-draft fans for firing plants, as combustion air fans in industrial furnaces, glass-melting pans and smelting plants. Our high-pressure fans work over pressure ranges from 30 to 250 mbar.

Our circulating fans can withstand temperatures of up to 1,000°C and are used for tempering, annealing and hardening furnaces, as well as for core drying. To operate the furnace system economically an even and fast exchange of heat is required. The air cooling system used by Venti Oelde has proved itself again and again under the toughest conditions. The Venti Oelde Duplo shaft cooling system prevents the transfer of heat from the furnace through the shaft to the particularly sensitive roller bearings.

The processing of excess continuous material.  With tearing fans, we can shred continuous material such as edge strips which arise, for instance, during the manufacture of paper, cardboard and fibreboards. The fan’s design is dependent on the width of the edge strips, the roll-off speed and the type and thickness of the material. The tensile strength and coating of the waste are also determined and used in the calculations. The impeller blades are fitted with replaceable cutters or saw-strips, with which the continuous strips are shredded.

Switch off the contaminants, switch on to efficiency. For complex applications when cleaning process gases, Venti Oelde offers very practical solutions. They are functional, reliable and have a long life. They are efficient and cost-effective. For process gas-cleaning systems, dry sorption processes upstream of the filter systems are becoming increasingly important. By using various absorbants/adsorbants we can remove foreign materials from air and can neutralise acid contaminants. A recirculating system makes optimum use of these additives.

Special separation systems are required for very fine dust. The same is true for fibrous, sticky or moist dust, or for dust which is difficult to agglomerate. Processes with a high concentration of dust and material require filter systems which continue to work reliably when the filter surfaces are subject to maximum loading. Venti Oelde filters do everything you would expect of a modern filter system. Venti Oelde offers a single or double row filter, depending upon the amount of air, the amount of dust it carries and upon the space available. All filters can be used as suction and as pressure filters. The double row designs are arranged with a centrally located inlet corridor for the unfiltered gas.

The ROVAL, oval bag filter range is a compact, space-saving and extremely efficient bag filter system for the separation of almost all dry, free-flowing dusts. The oval filter bags are installed horizontally in the dust-laden gas plenum. They are clamped and sealed against the slotted wall from the clean air side. The advantage of oval filter bags is that they keep their shape. Cleaning is supported by the vertical downflow to the bags. Short, powerful pressure pulses dislodge the dust cake from the filter surface. The pulses come from the compressed air tanks, via the propulsion jet pipes into the oval filter bags.

To separate large quantities of bulk materials, our robust and low-maintenance round filters with integrated cyclone separators are tried and tested. Amongst other things, they are used as final separators for pneumatic conveying systems. Venti Oelde makes round and cyclone filters tailored to your requirements. Depending on the application, we use a variety of sheet thicknesses and materials such as stainless steel and highly wear-resistant steel. We offer filters in a variety of versions, such as those that fit on top of bunkers, with a filtered air dome or with a swivel lid.

When filtering air containing bulky and/or fluffy fibrous material, other parameters apply than for conventional dust. The aim is to avoid dust collecting in the spaces between the filter bags to ensure a continuous discharge of the filtered dust as well as to maintain a constant pressure loss in the filter. Venti Oelde has developed special reverse air and pulse filters for the processing of light-density materials in the wood, fibre, textile and paper industries. They work with air volumes from 10,000 m³ up to in excess of 250,000 m³ per hour and at maximum temperatures of 60°C. They guarantee trouble-free, continuous operation and can be supplied to conform to the ATEX 94/9/EU guidelines.