Vacuum pumps and systems for resin injection

By using R 5 rotary vane vacuum pump, the Busch Company is offering the ideal pump for closing and evacuating moulds in resin injection procedures. R 5 vacuum pumps are available in a wide range of installation sizes from 3 to 1600 cubic metres per hour and can therefore be used in both very small and the largest of moulds. With a final pressure of 0.1 millibar corresponding to a vacuum of 99.99 per cent, R 5 vacuum pumps guarantee that the resin penetrates quickly and fully into the mould. Any air bubbles or gases forming are removed from the resin, thereby guaranteeing high product quality.

R 5 rotary vane vacuum pumps are designed for continuous use and are therefore very robust and fail-safe. The optional add-on activate carbon

filter prevents any odour emissions. Busch is internationally one of the largest manufacturers of vacuum pumps for all applications in the industry and has over 45 years experience in vacuum technology. R 5 rotary vane vacuum pumps have become the international standard in the processing of composites. Alongside the vacuum pumps, Busch also offers standardised vacuum systems consisting of one or more R 5 rotary vane vacuum pumps mounted on a vacuum container. These

vacuum systems have up to eight vacuum connections, to which the vacuum lines from one or more moulds can be connected. The vacuum required to close the mould can be drawn from one of these connections. Each connection has an independent vacuum control valve allowing the height of the vacuum to be individually adjusted at each point of the mould. The vacuum container guarantees the constant provision of sufficient suction capacity, even in the largest moulds. By using a vacuum container, there is the option of using a relatively small vacuum pump. This makes Busch vacuum systems a highly economical solution for guaranteed vacuum generation with the highest suction capacity. Busch vacuum systems are also compact and mobile and as such can be used flexibly wherever vacuum is required

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services

Uli Merkle • September 18, 2008

Vacuum pumps for all photovoltaic applications

The COBRA series of screw vacuum pumps encorporates a complete range of dry-running vacuum pumps for all solar technology applications. The COBRA NC screw pumps are the ideal vacuum generator for all processes involved in the manufacturing of photovoltaic modules.

 

COBRA screw vacuum pumps can be used during the manufacturing of both mono- and polycrystalline and amorphous silicon. Depending on the size and mode of operation of the crystal puller or pourer, a combination of COBRA screw vacuum pumps with an additional Roots vacuum pump can be used. This can drastically increase the vacuum capacity in the ultimate pressure range. COBRA vacuum pumps achieve an ultimate pressure of 0.01 to 0.3 mbar depending on their design size. They can be supplied in seven standard sizes with suction volumes of 70 to 630 cubic metres per hour. When combined with a Roots vacuum pump, suction volumes of up to 4000 and more cubic metres per hour can be achieved.

 

Wafer coating can also be carried out using these screw vacuum pumps. When screw vacuum pumps are used in this process, Busch's experience in the semi-conductor industry is second to none. Vacuum pumps of this kind have been employed successfully worldwide for many years.

 

A further area of application of the COBRA screw vacuum pumps is the lamination of photovoltaic modules. Here, the vacuum pumps generate the vacuum in the laminator which builds up counter-pressure in order to press the individual photovoltaic cells between the ethyl-vinyl-acetate films (EVA) onto the module's glass plate and/or to glue them in place there. The high vacuum of the COBRA has a direct influence on the quality of the photovoltaic module. On the one hand, it prevents air or gas bubbles forming between the films or between the films and the glass plate, and on the other it guarantees that all components are glued securely and tightly to one another. This reliably protects the module against air and humidity penetration, which in turn has an extremely positive effect on the module's service life.

 

COBRA screw vacuum pumps stand out thanks to their operational safety and economy. High efficiency is achieved through the oil-free and contact-free compression. This significantly reduces power consumption against oil-lubricated vacuum pumps with a comparable performance. With a suction volume of 400 cubic metres per hour, power consumption of a Busch screw vacuum pump is more than 30 percent lower. This means considerable savings are possible where a vacuum pump is used in three-shift operation.

 

The screw vacuum pumps offer further savings potential on account of their low-maintenance operation. Since the pump works without contact, there are no wearing parts. In addition, the maintenance jobs typical for oil-lubricated vacuum pumps such as changing the oil or oil filter are no longer required.

 

In addition to vacuum pumps for all of these processes, Busch also supplies central vacuum systems for the central supply of the complete solar module production with vacuum. This central vacuum supply means individual vacuum pumps are no longer needed in the production rooms.

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services

Uli Merkle • June 6, 2008

New Dolphin liquid ring vacuum pumps

The company Dr.-Ing. K. Busch GmbH have launched two complete series of liquid ring vacuum pumps onto the market. Dolphin liquid ring vacuum pumps are available as a single-stage version in a block design (Dolphin LC) and in a base plate design in either a single-stage or two-stage variant. Capacities of between 25 and 5100 cubic metres per hour are covered by these new Dolphin liquid ring vacuum pumps.

 

Thanks to their sturdy design, Dolphin liquid ring vacuum pumps are suitable for tough, permanent operation in applications in the chemical, crude oil and pharmaceutical industries. The precise coordination of the design sizes, selection between different materials for components and seals, different bearing options and the large range of accessories make exact designs possible for every application in other areas of industry, too.

The vacuum pumps of the Dolphin LA/LB series are also available in an ATEX-certified version. This means that these vacuum pumps can always be designed tailor-made to match customers' requirements. Busch also delivers complete vacuum systems with integrated Dolphin vacuum pumps.

There are always three modes of operation for all Dolphin versions. Firstly, the service water can be fed continuously and then discharged again together with the extracted gas (through-flow system). Secondly, the Dolphin vacuum pump can be operated with an open circuit. This means that the service water is separated from the gas in a downstream vessel and then fed back into the vacuum pump. At the same time, fresh water is added. The third mode of operation is the closed circuit. With this version, the service water is also separated from the gas in a downstream vessel, then runs through a cooler and is returned to the vacuum pump again.

Busch supplies the patented liquid separator AquaMin as an accessory. This stands out thanks to its great efficiency and the integrated, individually adjustable cavitation protection. The open circuit option makes savings on service water of up to 90 percent possible. The optimum-positioned liquid overflow avoids the vacuum pump being overfilled with service water.

Dolphin vacuum pumps achieve an ultimate pressure of up to 33 mbar. In combination with a gas ejector, the ultimate pressure can be reduced to 8 mbar.

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services

Uli Merkle • March 3, 2008

"iF product design award 2008" goes to Busch

Maulburg. At the end of the year it was official: The Maulburg-based vacuum pump manufacturer Busch was awarded the international design prize "iF design award 2008" for a newly developed vacuum pump. This prize is awarded annually by an expert jury for new products that stand out on account of their excellent product design. The jury not only evaluates "beauty", but a degree of innovation, choice of material and processing as well. Further aspects of evaluation include environmental compatibility, functionality, ergonomics and safety. The prize will officially be awarded on the opening day of the computer fair CeBit in Hanover in March.

 

Busch's new vacuum pump was developed for the packaging industry. Developers and design engineers used a completely new approach. Their main priority was to create a powerful machine that is extremely easy to maintain and requires minimum space thanks to its compact dimensions. That they had managed to achieve this aim was proven in May 2007, when the vacuum pump was presented at an international fair for the first time in Frankfurt. In the meantime, the machine has been presented at trade fairs all over the world and has been met with great approval by trade visitors.

The special feature of this vacuum pump is that it meets the strict specifications of hygiene requirements in the food industry. It is the only vacuum pump in the world to meet these standards.

The "iF design award" has been a global, recognised trademark for excellent design for 54 years. The iF brand has long been established as a symbol for excellent design performances and now operates from Hanover, Munich and Taipei. 2771 products from 35 countries entered the competition. Of these, a total of 821 were awarded the coveted design prize. Most products are for private use, however. For example, consumer electronics, computer and mobile phones received awards, as well as furniture and household goods. The prize-winning vacuum pump will be on display at the "iF exhibition" on the Hanover Fair site for six months from March 2008. It will be on display during the major CeBit and Hanover Fairs.

For the Busch Group, this new product will further secure a successful future, remaining true to the ethos of the company's founder, Dr. Karl Busch, of always being better than the rest.

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services • Uli Merkle

Maulburg, January 18, 2008