Effective and Reliable Vacuum Supply
The founder of Salzbrenner KG, Karlheinz Salzbrenner explains the company philosophy: “We want to make high-quality sausages from locally produced meat and natural ingredients.” A simple idea that has been successful to the present day. Initially Salzbrenner sold products to restaurants and snack bars, but now it also supplies retail and wholesale companies throughout northern Germany.
The traditional company Salzbrenner KG manufactures 15 to 30 tons of boiled sausage products daily. Production focuses on proven recipes, natural spices and locally sourced fresh meat. In contrast, the processing technology used by Salzbrenner is highly modern. Vacuum for the packaging machines is supplied by an efficient centralized vacuum system made by Busch. Salzbrenner uses the latest technology to manufacture and pack top quality products economically and to the highest hygiene standards.
The success of Salzbrenner products made it necessary to continuously increase production capacity, although the production area of the site at the old Hamburg Abattoir could not be expanded. In 2006 a new building making optimal use of the available space was inaugurated at the site. The original vacuum supply for the four thermoforming machines and a dual chamber machine included the pumps for rough vacuum located in a separate room above the production area. This was done to prevent waste heat from the pumps entering the cooled production area, causing increased air conditioning costs. The vacuum boosters remained in the thermoforming machines, as did the smaller rotary vane vacuum pumps used for forming foil into trays. However, this arrangement proved to have a disadvantage: the vacuum pumps were started with the packaging machines, and ran almost continuously throughout the working day.
Reducing Energy Costs in Thermoforming
In order to reduce energy costs and improve system reliability, production manager Christian Heitmann decided last year to centralize the vacuum supply. Busch vacuum specialists were contacted, who designed a central vacuum system for installation in the same room as the previously used rotary vane vacuum pumps.
This centralized system now generates vacuum for the four thermoforming machines, and supplies the pre-vacuum to evacuate the packaging in these machines and the dual chamber machine. Between the central vacuum system and the packaging machines three vacuum containers are installed, which act as reservoirs to maintain a permanent vacuum of 30 to 40 mbar. This arrangement has the advantage that vacuum is available immediately at the start of the evacuation cycle. The rotary lobe boosters installed directly to the packaging machines increase the rough vacuum instantly to the level required for packaging, permitting extremely short cycle times. Part of the central vacuum system runs independently to supply vacuum for tray forming at about 150 mbar.
After a year of operation, the central vacuum system has met production manager Christian Heitmann’s expectations in full: the operating hours of individual vacuum pumps have been reduced by 20%, as the pumps only run if required by current demand. In addition, only four rotary vane vacuum pumps and two rotary lobe boosters are installed in the central system. A fifth rotary vane vacuum pump acts as a reserve, and can also be connected to the system if production is expanded and another packaging machine added. The previous decentralized system had a rotary vane vacuum pump for each of the four thermoforming machines and the dual chamber packaging machine, and a smaller rotary vane pump for each of the tray thermoformers.
The new system creates substantial energy savings by reducing:
- The operating hours of individual vacuum pumps
- The number of vacuum pumps in operation
- Air conditioning energy consumption by eliminating waste heat emissions in the packaging room
Christian Heitmann regards the improved system reliability as another significant advantage. In the event of a vacuum pump failure, the reserve pump will activate automatically without production interruptions or downtime. In addition, maintenance personnel no longer need to enter the production area. Stoppages due to maintenance have been eliminated, as service staff have unrestricted access to the individual vacuum modules during production.
Production manager Christian Heitmann also relies on Busch to carry out maintenance work. A service contract guarantees the availability of the entire vacuum system over a five year period for a fixed annual payment. This contract allows Salzbrenner to plan operating costs in advance, and provides professional and punctual execution of all maintenance work by a Busch service technician.
Busch Vacuum Pumps and Systems
Uli Merkle - 28 January 2016
Busch Vacuum Pumps and Systems is one of the largest manufacturers of vacuum pumps, blowers and compressors in the world.
With a lot of experience and top qualified personnel, we are forward-looking and strive to improve our products and ourselves. We are constantly at work developing innovative technologies that will define the vacuum world of the future.
Our manufacturing plants utilize the most modern manufacturing techniques, machinery and equipment under very strict quality controls, which surpass DIN EN ISO 9001 requirements.
As of 2016, Busch Vacuum Pumps and Systems employs more than 3000 people and features the largest selection of vacuum pumps for the industrial applications in the world. Due to its immense line of vacuum pumps, expertise and experience in the building of vacuum systems and the extensive service network, Busch is capable of providing ideal comprehensive solutions.
With 60 companies in 42 countries and sales agencies worldwide, we are strategically positioned throughout the world to provide our customers with the essentials for success.
Our goal always is to provide the customer with the highest possible return on investment. Personal consulting, choice of the optimum product and prompt service on site are key features of our comprehensive service that make the achievement of this goal reality. Our experience and know how in broadly diversified applications and product design furnish the basis.
Busch’s headquarter is located in Maulburg, Germany. Besides Busch Holding, the German manufacturing plant, Busch Produktions GmbH, the sales organization, Dr.-Ing. K. Busch GmbH and service company, Busch Dienste GmbH are headquartered here. In addition, Busch operates production plants in Switzerland, Great Britain, Czech Republic, Korea and the USA.
Busch Vacuum Pumps and Systems
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Effective and Reliable Vacuum Supply
For more than 50 years Salzbrenner sausages have been a byword for quality, especially in the greater Hamburg area. The founder of Salzbrenner KG, Karlheinz Salzbrenner explains the company philosophy: “We want to make high-quality sausages from locally produced meat and natural ingredients.” A simple idea that has been successful to the present day. Initially Salzbrenner sold products to restaurants and snack bars, but now it also supplies retail and wholesale