Triark Pumps Helps Chocolatier Resolve Solids Issue


Essex based pump supplier, Triark Pumps, was approached by a leading European chocolatier, with the challenging task of adding a solids handling functionality to the pumping of its brand famous chocolate.

The pumps in question needed to handle an already troublesome medium, namely chocolate, but in this case, with the addition of inclusions , such as nuts and raisins.

Having serviced all of the main chocolate producers in its 30+ years of business, Triark knew only too well that chocolate is one of the most difficult fluids to transfer correctly and requires an expert approach.

Chocolate solidifies when cool - we eat it at ambient temperature - so it has to be kept warm, not only as it moves along the pipelines, but also through the pump. The main issue is that chocolate is ‘shear sensitive’, meaning the cocoa butter and cocoa solids can easily separate if moved too fast, which can in turn burn the chocolate. This is not something that a high-end confectionary producer can allow. Chocolate will also react the same way if the discharge pressure is anywhere over 100psi, so correct configuration of the discharge lines needs to be born in mind too.

Triark Pumps’ engineers initially considered using an Air Operated Double Diaphragm (AODD) pump, its most successful pump type for chocolate based applications to date, but the lack of a localised compressed air supply meant that a different approach was required.

Unfortunately, the overall choices were limited given the need for an electrically operated pump that could run slow (due to the shear sensitive nature of chocolate), handle solids (nuts and raisins) and be heated, so that the chocolate wouldn’t cool during both the normal running cycle or when the system stopped for any reason.

Having carried out extensive ‘pre-selection’ research before discussing possible options with a number of its key suppliers, they identified several alternatives from the likes Alfa Laval, Grundfos and Desmi.

Eventually though, and drawing upon the experience gained during a previous visit to India by Triark’s Managing Director, David Rozée, where he witnessed Desmi pumps in operation at a leading manufacturer of semi-finished cocoa mass, the most appropriate solution was determined.

Triark supplied two Desmi Rotan 2” positive displacement internal gear pumps, comprising cast iron casing and rotor, mild steel shafts, bronze internal bearings, front and rear heating jackets, packed gland seal and secondary lip seal. Each pump was flexibly coupled to an SEW 1.5 kW, IP55, EFF1 gear motor and mounted on a fabricated ‘top hat’ style stainless steel base plate, with a stainless steel coupling guard.

Commenting on this application, David Rozée, Managing Director, Triark Pumps, said, “Desmi has built an enviable reputation in the manufacture of pumps for the food and drink sector, so not only did the eventual selection provide a quality solution which to date has been running without issue, it also provided the most cost effective option, enabling us to tick every box on the original brief”.

So, when you next enjoy a piece of quality chocolate confectionery, you can do so in the knowledge that the product may not be quite as smooth and rich without the support and expertise of Triark Pumps.

More articles on this topic

Efficient Food Processing with Long-Life PTFE-Lined Hose

20.11.2020 -

Food and beverage plants can now maximise production line profitability with FaBLine, a new food-grade flexible hose from Aflex, part of the Watson-Marlow Fluid Technology Group (WMFTG). Developed to meet the latest hygiene standards, the patented PTFE-lined hose with standard 316 stainless steel braid ensures efficient product transfer and handling while simultaneously offering longer life than rubber hose alternatives.

Read more

Grundfos Launches Smart App in the Philippines for Fast, Efficient Water Infrastructure Service

12.11.2020 -

Basic necessities and services must be within everyone’s reach, that is why the Philippines continues to push for digital transformation amid the pandemic. The digital shift is also encouraged for companies to stay resilient, innovative and to respond better to the needs of their customers. As water and sanitation services are crucial in the Philippines, the public and private sectors must leverage intelligent digital technologies that can provide sustainable water supply and improved sanitation for all.

Read more

Leybold offers a dry claw pump, CLAWVAC, for robust rough vacuum applications

22.10.2020 -

Especially for rough industrial processes Leybold introduces the uncomplicated, dry rough vacuum CLAWVAC pump. Besides food processing, packaging and environmental technology applications, it is suitable for drying and sterilization processes. The pump, which is offered in three pumping speed classes, is specially designed for continuous operation at every working pressures.

Read more