Self-priming Pump Systems with Robust Vacuum Technology from Busch
Fig. 2: Busch R 5 rotary vane vacuum pump installed in a SuperBetsy pump system.
- This means that when the engine is switched on, the vacuum pump begins to draw in the air from the intake pipe up to a closed ball check valve.
- Due to the vacuum in the intake pipe, the water rises up to the ball check valve.
- As soon as the water level has reached the ball check valve, the internal control opens the valve, starts the centrifugal pump and switches off the vacuum pump.
- If the water level in the intake pipe drops below a certain level during operation, the vacuum pump switches on again.
- The electronically controlled "BetsyPrime" suction system runs extremely efficiently and only operates the vacuum pump when this is required for the initial vacuum or in the event of a dropping water level in the intake pipe.
Depending on the suction capacity of the pump systems and the diameter of the intake pipes, different sizes of R 5 rotary vane vacuum pumps are used, from a pumping speed of 40 to 100 cubic metres per hour. The one thing they all have in common is that they are driven by the diesel engine via V-belts.
During the development of the "SuperBetsy" pump systems, at Hidrostal they chose the rotary vane vacuum technology from Busch because it is extremely robust and reliable. Furthermore, the R 5 rotary vane vacuum pumps allow a higher vacuum level to be reached than with other technology, such as ejectors.
This has the advantage that water can be drawn in from a depth of up to seven metres – something which expands the application area of the "SuperBetsy" pump systems considerably.
Fig. 3: Cross-sectional drawing of an R 5 rotary vane vacuum pump.
CEO János Vigh is extremely satisfied with this technical solution because he knows that he is producing high-quality and reliable units with his "SuperBetsy" pump systems – units which are often used in sensitive and difficult situations; for example, during floods. Here, he must be able to completely rely on the installed vacuum pumps.
With Busch, he knows that he is in good hands – and not only technically; Pannon-Hidrostal is supported directly by Busch locally through the Hungarian sales company Busch Hungary. With its global network of 60 companies in 42 countries, Busch is represented around the globe and is always close by with a service technician in the event of damage or repair.