Pumping up production

Faced with the need to increase the capacity to pump coating compound from a storage vessel to a paper coating machine, the customer approached AxFlow, a distributor of Mono products in Sweden.

Hans Lundkvist, AxFlow’s sales engineer in Sweden, says: "The coating compound involved is extremely abrasive and highly viscous. This meant that the pumps chosen had to be rugged enough to provide reliable performance. As the customer already had a number of vertically mounted Mono pumps installed and was very satisfied with their performance, a pair of Mono E-Range belt-driven pumps were the obvious choice when they needed to increase capacity. The fact that they could be vertically mounted was a further benefit, as floor space was limited with this particular application.” 

The coating clay in applications such as this are highly shear sensitive and can contain up to 75% solids, including kaolin, marble, carbonates and titanium oxide. It can also dry instantly, making it essential that the pumps used can prevent moisture loss, while still providing a gentle pumping action to avoid shear damage to the coating clay during transfer. 

The vertically-mounted high pressure E-Range pumps offer reliability and efficiency for applications where particularly abrasive or viscous fluids are being handled. They incorporate a helical rotor turning within a resilient rubber stator, providing a smooth low shear action which ensures the integrity of the coating mix remains intact. The pumps also feature Mono’s Flexishaft drive system that provides a single component link between the rotary motion of the drive shaft and the eccentric motion of the helical rotor. The reduced number of moving parts in the drive train eliminates wear and makes lubrication unnecessary, eliminating the risk of contamination. The Flexishaft design extends routine maintenance intervals and carries a 10-year warranty.