This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

Pumps replacement for transfer of egg white

15 March 2010

After repeated failures using conventional impeller pumps for the transfer of egg white in glazing processes operated at Rowe’s, the company turned to peristaltic pump technology

Originated in 1949 as a bakery in Falmouth, Rowe’s today comprises two production sites (both in excess of 20,000 sq ft), 17 retail outlets and more than 400 employees. As well as selling products such as pasties, savouries, sandwiches, cakes, breads, rolls and confectionary through its own stores, the company also supplies on a wholesale basis to virtually all the UK’s leading supermarkets.

Maintaining such a vibrant manufacturing enterprise presents a real challenge to engineers such as Phil Thomson, who is part of a team that helps ensure production is both continuous and efficient.

One particular recent problem on the pasty production line was causing the maintenance team more than a few headaches. Here, egg white is pumped into a glazing unit that is effectively a container with two integral spinners.

The spinners create a mist that is allowed to fall and form a glaze on pasties passing below on a conveyor. Until recently, the company was using a conventional impeller pump for the task, but repeated failures and downtime became a growing cause for concern.

“The problem with an impeller pump is that it lacks a non-return valve, so if the process stops then the pump needs to be re-primed,” explains Mr Thomson. “Furthermore, because egg congeals, dedicated cleaning of both the pump and its connections is required. The escalating downtime meant ultimately that we had to find an alternative.”

Fortunately Rowe’s already had chemical dosing pumps from Watson-Marlow on site and so Thomson was aware of the capabilities of peristaltic technology. “I called Watson-Marlow and they explained what pumps would be suited to the application, finally recommending a 520 series process pump that they kindly supplied on loan for trial purposes.”

Described as the world’s fastest growing pump type, peristaltic pumps have no valves, seals or glands, and the fluid contacts only the bore of the hose or tube, eliminating the risk of the pump contaminating the fluid, or the fluid contaminating the pump.

Importantly for Rowe’s, Watson-Marlow pumps enable users to clean in-line at full velocity, without the intrusion of the bypass required by most other positive displacement pumps. The pump self-drains, has low-shear action and straight-through flow, and the tube is fully swept for superior hygienic performance. After a two-week trial at the company’s production facility in Falmouth, Rowe’s duly acquired the Watson-Marlow 520 series pump.

“While impeller pumps are cheaper, we could easily burn out four a year on a single production line,” says Thomson. “If you add in the downtime and labour costs, peristaltic technology makes far more economic sense.”

As a further benefit, the peristaltic pump has also reduced the amount of foam caused previously by air entrapment in the impeller pump. Foam is classified as product waste and was being created at a rate of around 1 litre an hour.

“We couldn’t be more pleased with the peristaltic pump,” states Mr Thomson. “Considering all the costs we incurred with our impellor pumps I estimate that we will achieve payback on our investment within 12 months. In fact, we have just ordered a second pump for another glazing unit and hope to replace them all over the course of the coming two years.”


Contact Details and Archive...

Print this page | E-mail this page

RELATED CONTENT...


Article image CIP pumps provide hygienic solutions for Russian food plant

Watson-Marlow Fluid Technology Group (WMFTG) has supplied its Bredel CIP (clean-in-place) pumps to a sauce and condiments manufacturing plant in Russia. Full Story...

CPD accreditation for pump training

The British Pump Manufacturers Association (BPMA) has recently embarked on a process of securing CPD accreditation across its full pump training programme. Full Story...

MasoSine Certa achieves EHEDG Aseptic certification

Pump for viscous fluids pump is now easier to fit

Ensuring a constant flow for viscous products

RELATED SPONSORED ARTICLES...


Article image Qdos 60 attributes ideal for dosing application at French winemaker

Watson-Marlow Pumps Group has supplied Qdos 60 metering pumps to Fauchier Company, a France-based specialist in the design and manufacture of automated filtration systems.Full Story...

Article image Extension to MasoSine range of pumps ensures perfectly sized pumps for all food applications

Watson-Marlow Pumps Group (WMPG) has introduced three new models to its MasoSine range of sinusoidal pumps. Two of the new models – the SPS 250 and the SPS 500 – provide customers will an even greater choice of pump sizes for a wider range of applications.Full Story...

Waukesha Universal 1 & 2 pumps are a hit with biscuit manufacturer

Cat Pumps slash energy and maintenance costs at food processing plant

AxFlow introduces Universal Centrifugal pumps from Waukesha Cherry-Burrell

MOST VIEWED...


Article image Spray and save on the glazing process

Food glazes are widely used in the bakery sector to improve the look and taste of baked products. Traditionally, this coating process has resulted in substantial waste. Technology advances mean that this is no longer the case. Full Story...

Article image Your flexible friend in the food factory

Suzanne Gill finds out where thermal imaging technology can help around the factory. Full Story...

A dry-ageing process improvement

Self diagnostics: an enabler for predictive maintenance

What role does refrigeration play in the supply chain?

http://www.appetite4eng.co.uk