Case Study: Two-Stage Filter Press Pump System Introduced to Great Effect
Reducing downtime and saving our clients money has always been at the core of our beliefs. Our filter press pump solution is a great example of this with our pump-sets now in operation on a number of sites across the UK.
We were initially approached by a washing systems company with a familiar story – their current filter press pump solution – a Pemo centrifugal double-stage slurry pump, was regularly wearing out. Refurbishment of the pump needed to be undertaken on a regular basis and would often cost as much as the pump itself. This would cause the site expensive downtime. Furthermore, press time using their existing pump would often take a lengthy 90+ minutes. Could it be reduced?
Our cost effective and low maintenance solution would use a two stage pump system. A centrifugal slurry pump (a SlurryPro 4x3) would provide a fast fill before high pressure is applied using a progressive cavity pump. This means both pumps are doing duties they are suited for, unlike the sites’ existing pump which was not really designed for coping with the huge fluctuation from high flow/low pressure to low flow/ high pressure. Following build and supply to a trial site, our client confirmed that the two-stage pump was a success and working without issue.
Nine months on and parts are still yet to be replaced. Press time on one particular site has been reduced from 90 minutes to just 35 minutes and the site has reduced its overheads due to the pumps being operational for a much shorter time each press cycle. Furthermore, the site will benefit when spares are required. As the pumps are standard pumps, spares are readily available off the shelf in the UK, which Atlantic are able to quickly supply from their Sheffield factory. The client we supplied our first filter press pump solution to has since gone on to order a further two pump-sets with all three having been supplied to UK-based recycled aggregate plants.