New claw vacuum pumps and compressors from Busch

Dr.-Ing. K. Busch GmbH has launched a full range of ATEX-compliant claw vacuum pumps and compressors. It is now possible to use vacuum pumps and compressors that compress using Mink claw technology, in ATEX-relevant applications.

 

Mink vacuum pumps are approved under Directive 94/9/EG (ATEX 95) for Ex II 2(i)/2(o) G IIB3. This means that these vacuum pumps can be used for category 2 inside the vacuum pump and in the outer environment. All materials in explosion group IIB3 can be discharged using them. The temperature class is dependent on the ultimate pressure and the size of the vacuum pump. Flame traps are not required.

Mink Compressors are approved for Ex II 2(i)/2(o) G IIB3 T3. This means that these compressors can also be used for category 2 inside the compressor and in the outer environment. Gases in explosion group IIB3 and temperature class T3 can be compressed and with Mink compressors no flame traps are necessary.

 

Both Mink vacuum pumps and Mink compressors work under the tried and tested claw principle and compress with non-contact. The benefit of this for the operator is that no lubricant is needed and compression takes place completely oil free.

Non-contact compression causes no wear and tear and maintenance is therefore no longer required. No costs are incurred for wear parts or shutdown periods as a result of maintenance, and gone too are the costs associated with operating an oil-lubricated vacuum pump/ compressor such as oil change, new oil and disposal of used oil.

 

Depending on their size, Mink claw vacuum pumps can reach ultimate pressures of 60 to 150 hPa (mbar). The range can reach suction volumes from 60 to 300 m³/h.

Mink claw compressors can achieve an overpressure of up to 2 bar. Like the vacuum pumps, they are available in eight different sizes with volumetric flows of 60 to 300 m³/h.

 

This new generation of ATEX-compliant vacuum pumps and compressors are ideal machines for use in applications where explosive gases and gas mixtures in category 2 and corresponding explosion group are transported or compressed, such as in the production and transport of biogas.

 

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services • Uli Merkle

Maulburg, August 17, 2006

Pneumatic vacuum feed for explosive materials

Dr.-Ing. K. Busch GmbH now offers a complete range of ATEX-certified vacuum pumps for pneumatic vacuum feed. Mink claw vacuum pumps from 60 to 300 m³/ h suction capacity are available in two different ATEX versions, depending on requirements:

 

The first version is for applications, in which the inside of the suction line is declared Zone 22 and the area around the vacuum pump is also declared Zone 22 or 21.

The second version is designed for pneumatic vacuum feeder systems, in which the inside of the suction line is in Zone 22 but outside the line, in the area around the vacuum pump, there is no zone classification.

 

This classification should cover most ATEX-relevant installations. This clear-cut classification of Mink claw vacuum pumps under ATEX makes it easier for the operator when it comes to choosing the right vacuum generator. This guarantees that the ATEX-guidelines are followed and the safety of the conveyor system guaranteed.

 

If explosive materials are being conveyed, the system operator must first, in accordance with EU-Directive 1999/92/EG (ATEX 137), carry out a safety analysis and assign the consequent zone classification. Busch has had its vacuum generators assessed and tested under the EU-Directive 94/9/EU (ATEX 95), and guarantees with an EU-Certificate of conformity their compliance with the relevant Directives. This combination of system operator (ATEX 137) and vacuum pump manufacturer (ATEX 95) and both Directives provides a closed safety system that will effectively prevent explosions.

 

When it comes to vacuum feed, Mink claw vacuum pumps are state of the art in terms of

producing oil-free delivery. With ATEX-certified versions, the tried and tested claw technology for vacuum generation can now also be used in explosive areas with complete confidence.

 

Non-contact compression allows the vacuum pump to be operated without oil in the compression chamber. Maintenance work is therefore no longer required. No costs are incurred for wear parts or shutdown periods due to maintenance and gone too are the costs associated with operating an oil-lubricated vacuum pump, such as, oil change, new oil and disposal of used oil.

 

Busch will be presenting the ATEX-compliant Mink vacuum pump at the Fakuma in Friedrichshafen, Hall A6 and stand No. 6411

 

 

 

Busch Vacuum Pumps and Systems

Marketing/Marketing Services • August 18, 2006

Uli Merkle

Complete range of COBRA screw vacuum pumps

Busch now provides a complete range of COBRA screw vacuum pumps, demonstrating the company's status as the international leader with the most extensive selection of dry screw vacuum pumps. Eight models offer pumping speeds from 70 to 900 m3 per hour. The ATEX compliant pumps are designed for use in Zone 0 and 1.

The new asymmetric screw profile and open, downward gas discharge make the new COBRA vacuum pumps extremely rugged and reliable, with a high tolerance for liquids and particulates.

High corrosion resistance is achieved by uniform temperature distribution inside the compression chamber. High pumping efficiency reduces thermal stress which, in turn, increases the service life of wearing parts such as bearings and shaft seal rings.

All models are water cooled and are available with radiator (air) or direct water cooling.

COBRA vacuum pumps are extremely easy to service with simple, quick access to the main pumping chamber. An integrated sensor monitors the condition of the vacuum pump continuously to anticipate maintenance needs. This provides a high degree of safety and ensures equipment continuity. Potential problems are detected early and the pump can be serviced before any failure occurs.

High pumping efficiency means that the COBRA range, size for size, uses smaller motors than other vacuum pump suppliers. This translates to lower electrical consumption and therefore less energy usage.

Full details and information on the COBRA range of dry running vacuum pumps is available at www.busch.de/cobra

 

Busch Dienste GmbH

Marketing/ Marketing Services • Uli Merkle

June 19, 2006

Busch with new products for the chemical industry

Busch in Maulburg displayed their products on two own booths at Achema in Frankfurt. The international fair for the chemical industry, which ended last Friday, is the most important fair for this branch worldwide.

For the first time Busch presented their whole range of vacuum pumps that are conform to the strict security policies in the chemical industry (ATEX). The displayed pumps were ATEX-accredited.

Worldwide Busch has the broadest product range of certified vacuum pumps for the chemical engineering.

 

Busch was able to present several novelties, which were accepted by the visitors with interest. It was about the so-called dry vacuum pump. These are vacuum pumps that work without any lubrication or any other operating fluid.

The new products were developed in the research and development department of Maulburg and Chevenez. Due to the close cooperation of those two manufacturing plants the products are ready for the start of production.

 

To satisfy the expected stampede of visitors not only specialists from Maulburg were at the booth. There were also people from almost every Busch company in the world to provide advice to their national customers at the booth.

 

The second booth displayed products of the new English company of Busch.

At the beginning of Achema Busch took over the company Graham Vacuum Technology Ldt. and presented itself at Achema as Busch GVT for the first time.

This new Busch company displayed vacuum pumps which are used in the oil field exploration in the off-shore branch and in the petrochemistry.

 

But not only the chemical industry is an important market for Busch:

At the same time Busch participated at a fair for the medical industry in Paris and had their own booth at the Xylexpo in Milan, which is a fair for the wood working industry.

 

Busch Dienste GmbH

Marketing/Marketing Services

Uli Merkle • May 22, 2006

Acquisition of the business of English company Graham Vacuum Technology Ltd.

Busch is pleased to announce the acquisition of the business of the English company Graham Vacuum Technology Ltd.

 

Graham Vacuum Technology has a long tradition as a vacuum supplier of special pumps for oilfield exploration in the off-shore oil & gas business as well as the chemical process industry. With this acquisition Busch can extend its activities to important and new segments of industrial vacuum applications.

 

 

Busch Dienste GmbH

Marketing/Marketing Services

Uli Merkle • May 16, 2006