Trading and engineering company focusing on process pumps
In 2017, a Carlsberg brewery approached us about a pumping solution for label glue.
The glue is a high viscosity glue. This was previously delivered in 200 l drums, but due to increased demand, the glue is now delivered in 1000 l IBC tanks.
Originally, the pumps were of a compressed air driven piston rod pump type, which can typically provide quite high pressure. According to the service organization, the pumps were often faulty and the maintenance costs associated with operating the pumps were often quite high. There was therefore a desire for more predictable maintenance on the future pumps.
The pressure requirement was also quite significant at around 12-16 bar.
The glue runs in a loop between several machines, which themselves call for glue via a level switch.
We solved the task with a 24 bar progressive cavity pump of the type Allweiler ADBP 12.2. It is a 2-stage pump that can deliver up to 12 l/min.
The change in technology meant that the pulsations caused by piston pumps were removed and thus the pressure peaks that were also in the system. At the same time, a lifetime of +12 months was achieved on the wear parts in the pump, which was a significant extension of intervention in the system, also called MTBF time (Mean time between failures).
In the picture you can see leakage from the stuffing box, this is due to an assembly error during start-up. The pressure and suction side were swapped. The suction side is not designed for a discharge pressure of 16 bar. We have included the image for educational purposes.
When the flow direction was reversed, the project worked perfectly.
