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PII Oct-Nov 2013

applications NOV MONO  DELIVERS THIRD EZSTRIP™ CAKE PUMP TO MAJOR UK FOOD SUPPLIER A major supplier of prepared vegetables to the UK food industry has recently taken delivery of another EZstrip™ cake pump from NOV Mono. Measham-based AB Produce trialled an EZstrip™ cake pump before installing its first unit a year ago, and the latest pump is the third that the company has ordered. AB Produce supplies a wide range of potatoes and prepared vegetable to customers in the food wholesale, retail, catering and processing sectors. The company had previously used a system of screw augers, steel collection bins, macerators and pumps to collect and process vegetable peelings before transferring them on to an on-site treatment plant. “However we were having problems with this,” comments AB Produce spokesman Carl Woolrich. “The physical location of the system, only a little way off the floor, meant that there was very little head of waste forcing its way into the macerators. The system was basically relying on the original pumps below to draw the waste slurry down into the macerators and this was resulting in blockages “When we began looking for an alternative solution, we realized that the Mono®  EZstrip™ cake pump offered some very attractive advantages. Mono®  could provide the pump with a modified inlet blending flange and auger which helps convey the vegetable waste product into the pump. This greatly increased the flow of slurry through the macerators and into the pump. “The first unit we tested performed extremely well and had a capacity of 4-5m3/h. It allowed us to replace the previous auger, bin and pump combination with a single, compact alternative. The Mono®  pumps operate very well indeed and we’ve been happy to order more to help eliminate the problems that we had previously.” The Mono®  EZstrip™ cake pump has been designed specifically to provide outstanding performance whilst also simplifying and speeding up the maintenance process. It  features a specially designed feed chamber which can be easily disconnected to provide access to the rotor and screw conveyor assembly. The rotor can then be separated from the conveyor, allowing removal of the rotor and stator while in-situ, with no need to disconnect any of the suction or delivery pipe work. This dramatically reduces the time required for maintenance work and ensures maximum availability. The EZstrip™ cake pump is ideally suited to a wide range of duties, including the transfer of thickened sludge cake (with up to 40% dry solids content) plus sludge blending, dewatered sludge handling and lime slurry dosing. Each of the pumps supplied to AB Produce features a widethroat hopper and a modified inlet blending flange, to ensure efficient collection and pumping of the vegetable slurry at a rate of 4-5m3/h. For more details contact Nov Mono, Audenshaw, Manchester Tel: +44 (0)161 339 9000 Web: www.mono-pumps.com High performance aod pumps for Hi-Tech Coatings In the second quarter of 2013 Hi-Tech Coatings, a world leader in the development and manufacture of water-based and UV-curable coatings used by the printing and converting industries, moved into a new production plant in Aylesbury, England. However, the company did not dispense with the proven production technologies used at the previous plant and which had contributed to its quality manufacturing processes. Having reaped the benefits of Wilden AODD (Air Operated Double Diaphragm) pumps for two years at the former plant, the new facility has been equipped with brand new Wilden pumps for transferring raw ingredients from intake, through processing and on to finished product filling and packaging. The liquids used in the manufacturer of Hi- Tech Coatings’ products are described as ‘very searching’ when it comes to their impact on the pumps used throughout the processing stages. Over several years, the brand of AODD pumps which the company employed suffered from leakage through the seals and clamp bands, plus there were problems with diaphragm life times. This was far from being a satisfactory state of affairs in a production plant where health and safety is high on the agenda, and product wastage only added to production costs. In 2010 Hi-Tech Coatings instigated an engineering research project to examine alternative makes of AODD pumps. It was this research that highlighted AxFlow’s Wilden AODD pumps as the best quality product available. “The previous pumps were simply not lasting and the cost of repair was working out about the same as completely new pumps,” reports Martin Skillen, Director, Hi-Tech Coatings. “In effect, the pumps were becoming an expensive consumable. We tried to explain this to our pump supplier at that time, but they could not get past the mindset that they thought we wanted the cheapest pump available when in fact what we wanted was lifetime and longevity.” Rather than remove all the existing troublesome pumps in one go Hi-Tech Coatings started with a Wilden 1.5-inch aluminium clamp band pump with Wilflex wetted parts for the distribution lines. Having proved its effectiveness further similar Wilden pumps were installed on the packing and filling lines and on the chemical distribution system. “For us the attraction of the Wilden pump is the simplicity of maintenance and the safety aspect”, says Martin Skillen. “We do not need to be too skilled to perform routine maintenance and the pumps are very easy for the operators to remove. Importantly, there is no requirement for an electrician, which always introduces another layer of complexity and cost.” The true capabilities of the AODD pump are reflected in the fact that it can be used at every stage of the production cycle, from off-loading raw ingredients from tankers to transporting semi-processed and processed product around the plant to the final stage of the filling line. The Wilden AODD pumps offer the ability to handle shear-sensitive fluids, keep thick and viscous fluids constantly in motion and provide leak-free operation. In addition, this pump can accommodate dead-heading during filling applications, a task that motor driven pumps are not able to handle effectively. The uncomplicated design of the Wilden AODD pump features few moving parts, and those that do move have simple and specific tasks. Since first being installed none of the Wilden pumps at the former Hi-Tech Coatings plant has required anything other than routine maintenance and the pumps have lived up to their promise, giving leak-free operation. The company is very satisfied as the pumps are run every day for two to three hours and provide high levels of accuracy and full controllability of the volume of ingredients going into the mixing operation. The new facility will enable Hi-Tech to Coatings to increase the production capacity of its water-based products upwards of 75%. The storage capacity is now up 300% on the old site which gives further scope for growth and expansion. To help achieve these targets, AxFlow has supplied five 2-inch Wilden aluminium clamp band pumps with Wilflex wetted parts and a similar number of pulsation dampeners to maintain low noise levels in the processing areas. “We have standardised on a 2-inch pump for the chemical distribution lines and 1.5 -inch pumps for racking and filling,” says Martin Skillen. “We built a factory in Detroit USA in 2011 and this came on stream in January 2012, and we standardised on the Wilden pumps for this production plant.” “We have found the Wilden pump to be reliable and economical to run, which is why we have specified it for the new facility, reports Martin Skillen. For more information contact AxFlow Ltd, Ealing, London. Tel: 020 8579 2111 E-mail: info@axflow.co.uk Web: www.axflow.co.uk Available on iPhone and Android devices 8 Process Industry Informe r October-November 2013


PII Oct-Nov 2013
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