New generation of vacuum pumps Busch has launched a completely revamped new generation of rotary vane vacuum pumps in the R 5 series. Three pump sizes with a suction capacity of 10, 16 or 21 cubic metres per hour produce an ultimate pressure of 0.5, 1 or 20 hPa (mbar), depending on the version. All sizes and versions offer stable performance characteristics, i.e. a high suction capacity is guaranteed even in the working pressure range. Thanks to their extremely compact design, these vacuum pumps are suitable for an installation in very confined spaces. A standard non-return valve in the suction pipe prevents ventilation of the recipient if the vacuum pump is turned off. The new R 5 rotary vane vacuum pumps are each driven by directly flanged standard motors. The main fields of application are vacuum packing machines, food processing machines, transportation and lifting devices and the plastics industry.

Busch R 5 rotary vane vacuum pumps are available with a large range of volume flow rates from 6 to 1,600 cubic metres per hour. The proven vane principle has been standard in numerous industrial sectors for many years. R 5 rotary vane vacuum pumps are very rugged, operationally reliable and have a high maximum tolerable water vapour inlet pressure thanks to the integrated oil circuit. All R 5 vacuum pumps are equipped with an oil separator as standard. This is fitted with air de-oiling elements that were especially developed for these vacuum pumps. This guarantees

clean exhaust air.

One of three technically revamped pumps from the proven R 5 rotary vane vacuum pump series: the R 5 0021 C.

Busch Vacuum Pumps and Systems

Marketing/Marketing Services

Uli Merkle • 08 January 2009

Maulburg. Last year, Busch supplied a large number of vacuum systems for production of wind turbines worldwide.

The call for environmentally-friendly energy production is becoming louder, and this in turn means that there are more and more wind energy farms everywhere. Above all, so-called offshore wind farms, with increasingly large turbine installations, are currently being built off sea coasts. Manufacture of rotor blades requires vacuum pumps produced by Busch, based in Maulburg, Germany.

The rotor blades for wind turbines are made of plastic. This plastic flows into the mould in liquid form under vacuum and then cures. The rotor blades, measuring up to 60 metres in length, require correspondingly dimensioned vacuum plants. Busch produces these plants individually and according to customer requirements. In recent years, a number of firms have been established on the German North Sea and Baltic coasts that specialise in production of such offshore wind turbines. They all trust in the reliability of vacuum technology from Maulburg. The failure of a vacuum plant during the curing process, which lasts several hours, can cause a loss of several hundred thousand euros. The reason why all these companies have been established directly on the coast is obvious: due to their size, the up to 60 m long rotor blades cannot be transported on roads.

They must be loaded from the production hall directly onto ships that bring them to the offshore wind farms. The plants are assembled directly on-site. Once the plants are assembled in the water, they have a height of up to 180 metres above the water level. Busch mainly delivers vacuum plants for these applications to Northern Europe, India, the Far East and North America. Busch engineers in the respective countries consult customers on site and provide technical support for the plants, and at the same time stay in close contact with the specialists in Maulburg.

Maulburg. Last year, Busch supplied a large number of vacuum systems for production of wind turbines worldwide. The call for environmentally-friendly energy production is becoming louder, and this in turn means that there are more and more wind energy farms everywhere. Above all, so-called offshore wind farms, with increasingly large turbine installations, are currently being built off sea coasts.