Large and Special Fans

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. Absolute reliability is required in all areas. Venti Oelde guarantees this through technical competence and recognized quality. Our services range from planning and...

… with individual solutions The various series and types, their specific material combinations and whole range of performance levels, are designed to satisfy the precise needs of each individual industry and its areas of application. The performance profiles for large and special fans differ greatly according to the industrial sector. Sometimes a particularly high temperature stability is needed, elsewhere the greatest possible resistance to corrosion may be required. Other times, maximum resistance to wear or the smoothest possible running has the greatest priority in the performance profile....

Comprehensive range of services … As a system provider, Venti Oelde is well versed in the processes of individual branches. Our services are therefore always targeted to completely integrated process solutions in which all components functionally engage. In this respect, we concentrate on details as early as the quotation phase. The specific regulations of individual industries and environmental and technical conditions, e. g. noise control, are taken into consideration from the start. All large and special fans, together with their connecting and adapting fittings, are planned and calculated...

… with outstanding quality The outstanding quality of Venti Oelde large and special fans is not a random result. It is the consequence of a whole series of reliable quality assurance systems. The Venti Oelde production standards comply with all the necessary German and international standards. We carry out continual quality control throughout the production process, after final assembly in the factory as well as on site at the customer’s, in compliance with international guidelines DIN EN ISO 9001:2000, the European Product and Operating Guidelines for Explosion Protection in accordance with...

Quality work … The flow technology and mechanics of our large fans are well-engineered right down to the last detail. They are individually planned and designed for your application by our specialists for longterm reliability. Only then do our trained and experienced specialist workers produce the optimal fan for you with modern production engineering and practiced, unique manual work. Follow us through the most important stages from the calculation to acceptance or delivery. Construction of a welded impeller Production of a casing component Manufacture of an impeller shroud up to 4.50 m by our...

… from the technical design to the large fan Final inspection of an impeller by our quality assurance Final inspection prior to delivery Balancing a rotor unit Final machining of a forged flanged shaft and a finished welded impeller Quality inspection after completion of each individual production step Test assembly of a double-flow centrifugal fan Rotor unit, ready for dispatch in a transport frame

Venti Oelde is one of the world’s leading providers of large and special fans for the cement, lime and gypsum industries. They are in use throughout the complete production process chain, from firing and cooling, grinding and separating to dust removal. Our fans work under arduous conditions, depending on the operating point and application, they fulfil various functions. The large fans are confronted with acceleration and centrifugal forces of varying strength, as well as with vibrations of differing strength and direction. They must withstand changes in temperature as well as corrosive media...

With cooler exhaust air, wear is generally to be prevented and heat-resistance assured. With heat exchanger fans, caking is to be avoided and exceptional heat-resistance ensured. By adaptation of the blade geometry, caking is minimized, maintenance work is reduced and a long service life guaranteed. For the cooling of rotary kiln jackets, swivel-mounted axial blowers force air against the outer surfaces. They can be either permanently installed or set up to be manoeuvrable. For combustion air, Venti Oelde supplies two-stage centrifugal fans with up to 400 kW drive power. Modern burners with pressure...

Extreme performances for the steel industry Large fans are indispensable in the steel industry. They perform untiringly in sinter, pellet, dust removal and gas cleaning plants, in furnaces, pickling and direct reduction plants. Conveying fans, process and exhaust gas fans as well as ventilating fans, transport enormous amounts of dust, move tremendous masses of air and handle dangerous gases. The demands on technology, material and mechanics are complex. Venti Oelde responds to this with individual designs, precise construction and high-quality production. In this way, we create each plant individually...

Sometimes, the peripheral speed of large fans approaches the limit of what is physically possible. Venti Oelde has tested the temperature-dependent strength and yield points of materials for many years. Reference values have been established and our own safety standards introduced. We plan, dimension and manufacture fans for permanently high demands on the basis of FEM computation. Our circulation blowers can withstand temperatures of up to 1,000°C and are used for tempering, annealing and hardening furnaces, as well as for core drying. We adjust their speed to the requirement at the particular...

Tireless in chemical plants and refineries There is a multitude of different tasks for Venti Oelde centrifugal fans in chemical plants and refineries. They are needed in methanol production, in fertilizer production and in the gasification of oil, coal and residues. They also provide their untiring services in coke plants and pharmaceutical engineering. Plant constructors and operators worldwide are among those who have been our customers for many years. Our centrifugal fans are often in use 365 days a year in arduous and hostile areas. These fans can be so equipped, that they even withstand...