Italian Winery Uses a Progressing Cavity Pump from Netzsch Pumpen & Systeme GmbH
The largest winery in Northern Italy uses a unique Nemo progressing cavity pump from Netzsch Pumpen & Systeme GmbH to gently transport wine without pulsation or fluctuations in pressure. The progressing cavity pump is more than two kilometers long and mobile, thanks to a wheeled carriage that allows it to move between tanks. It is active during early wine production, as it’s specially adapted to pumping abrasive and acidic mash without damage to the system or the grape pulp.
The Nemo progressing cavity pump performs with stable pressure and sensitivity. A digital pressure sensor with connected controller protects the pump technology by slowing down the system if the counter pressure reaches more than 5.5 bar. Between 12 and 35 m³ of wine is transported between the wine cellar and sites at speeds of 60 to 230 rpm. The flow rate can be adjusted, and the direction of plow can be changed by reversing the rotation direction.
Dry running isn’t an issue with the Netzsch Pumpen & Systeme GmbH cavity pump either. It is protected against dry running with an STP2 stator protection system that monitors surface temperature using thermal sensors. In addition, optical sensors regularly check to make sure that the medium is running through the system. A viewing window is conveniently located at the rear of the pump so the operator can check the process directly. It is completely compatible with food and drink regulations, meaning that the wine isn’t contaminated when using the pump. The system is even designed for easy cleaning and is impervious to rain.
In addition to developing solutions for the final wine product, the pump manufacturer has also designed systems for earlier steps in the process. For example, a hopper pump was specially made to feed mash. It is made out of steel alloy with chrome, nickel, and molybdenum, which makes the hopper resistant to corrosion, while offering a long service life.