A paper manufacturer was looking for a pump to convey a special coating for finishing paper. The paper becomes stronger and more resistant to water with the application of this coating. The paper manufacturer had previously been using an eccentric screw pump. However, due to the eccentric screw pump's frequent downtime and the high cost of spare parts, the customer sought an alternative. The paper manufacturer opted for a Boerger Rotary Lobe Pump.
The coating hardened if was not kept flowing or if it dropped below a temperature of 20°C. To protect the seals of the Boerger Rotary Lobe Pump and to keep it clean, a rinsing unit was fitted to the pump which rinsed the seals after every charge. The intermediate chamber is constantly rinsed from the bottom to the top.
The customer is extremely satisfied. Now, through lack of downtime, the customer has already regained the cost of the pump after 8 months. The quality of the end product could also be optimized as the Boerger pump with frequency control is a better design than the previous eccentric screw pump.
|Börger||Rotary Lobe Pump|
|Viscosity||max. 30,000 mPas|
|Solid content||16 - 19% DS|
|Rated capacity||75 - 91 m³/h (330 - 400 usgpm/h)|
|Pressure||4 bar (58 psi)|