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Polymer vanes last 3 times as long in vacuum rotary pump

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Vanes made of the bearing polymer Hitemp 150 have lasted three times as long as traditional vanes in servicing company Septic Tanks (Pty) Ltd’s vacuum rotary pump, a Broom B35.

The pump is used to create a pressure difference that sucks up the waste liquids from septic tanks.

The pumps involved in such operations should not come into contact with sewage ideally.

However, where septic tank pumping is not monitored continuously, overflow from the transport truck can make its way to the pressure vessel and on to the vacuum rotary pump.

The vanes in these pumps thus need to be cleaned.

In addition, the vanes need to be able to operate at high temperatures, since the pumps can overheat due to operation for long periods.

Armed with information about vane operating requirements, when the original laminate vanes in Septic Tanks (Pty) Ltd’s Broom B35 pump needed replacing as frequently as every 6 months, the waste-sector servicing company turned to Vesconite Bearings, the maker of various polymers, for a solution to this unique operating environment.

Vesconite Bearings technical sales consultant Phillip de Villiers recommended Hitemp 150, an engineered polymer that is wear resistant and can withstand temperatures of up to 150ºC.

This material will not delaminate as does the original-equipment-manufacturer supplied material, a thermosetting phenol formaldehyde resin that impregnates layers of cotton to produce a hard synthetic plastic, he reasoned.

The trial result has been impressive: Hitemp 150 did not delaminate unlike its competitor and it was resistant to overheating.

In addition, the new polymer vanes coped well with the frequent pump cleans that were required when waste material accidentally entered the pump.

Septic Tanks (Pty) Ltd owner Charl Neuhof is also pleased that the Hitemp 150 vanes continue to operate after a year and a half, while the phenolic alternative had to be replaced after six months.

Moreover, he is enthusiastic about the reduced maintenance costs that are associated with the product, which can be cleaned in-situ unlike the previous variety of vanes that had to be removed prior to cleaning because of their high levels of swelling when exposed to water.

Since testing of the B35 vacuum rotary pump vanes has gone well, Neuhoff plans to replace the vanes on its fleet of truck pumps as they fail.

His four trucks are used in the Johannesburg North, Pretoria, Hartebeespoort and Brits areas of South Africa, with three out on the road daily, each carrying six 6000 litre loads of waste material a day.

The five vanes that were employed in the B35 pump measured 35mm by 6mm by 330mm and had chamfered edges, but vanes for the other pump models that will be introducing the Hitemp 150 vanes will have different dimensions.

I manage the editorial affairs for MONETA Tanıtım, which produces specific publishing, specially for the sphere, Turkey industry. We work for content development through digital and print media, with a new generation, dynamic publishing intellection.

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Pumps

Delicate and quiet operation with Alfa Laval’s new robust Twin Screw Pump

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Designed for handling fluids which are sensitive, abrasive, and either high or low viscosity, the Alfa Laval Twin Screw Pump is ideal for use in hygienic applications in the dairy, food and beverage, and personal care industries.

“The Twin Screw Pump is the ideal choice for both high and low viscosity liquids, all pumped perfectly with complete reliability,” says John Walker, Pump Portfolio Manager.

 Additional benefits of the Alfa Laval Twin Screw Pump are that it is quiet and virtually pulse-free, as well as being smooth and gentle during operation. These characteristics make the pump an excellent choice for handling sensitive products.

 Built on a robust, reliable platform that meets stringent hygienic standards, the pump is capable of handling both product transfer and Cleaning-in-Place (CIP). Its low pulsation characteristics and excellent solids handling capabilities reduce the risk of product damage, thereby improving product quality. Maintenance is simplified and process uptime increased.

 Process flexibility

Two-in-one operation provides easy handling of process media of varying viscosities as well as CIP fluids. This simplifies piping and pump control, cutting costs and minimizing contamination risks. Superior suction performance with excellent lift capability and low NPSHR provides installation flexibility and increases product recovery.

Service and reliability

Quick, easy seal replacement with the pump in place is made possible, thanks to a cartridge seal with a truly front-loading, self-setting design. This maximizes process uptime and minimizes maintenance costs. An optional seal service kit program adds maintenance flexibility and cuts operating costs.

Operational safety

The Alfa Laval Twin Screw Pump features a clean, external stainless steel finish with profiled elastomers and mechanical seals fully surrounded by the product. Designed for maximum cleanability using FDA-conforming materials, the pump is both EHEDG- and 3-A certified. An optional ATEX version enables use in hazardous zones.

Alfa Laval is a leading global provider of specialized products and engineering solutions based on its key technologies of heat transfer, separation and fluid handling.

The company’s equipment, systems and services are dedicated to assisting customers in optimizing the performance of their processes. The solutions help them to heat, cool, separate and transport products in industries that produce food and beverages, chemicals and petrochemicals, pharmaceuticals, starch, sugar and ethanol.

Alfa Laval’s products are also used in power plants, aboard ships, oil and gas exploration, in the mechanical engineering industry, in the mining industry and for wastewater treatment, as well as for comfort climate and refrigeration applications.

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Pumps

Pumps bring comforts to travelling Pandas

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The two pandas arriving from China to Copenhagen ZOO will settle into the brand-new Panda House powered by Grundfos among others.

A technologically advanced home is waiting for the two pandas that have arrived to Copenhagen ZOO as an official gesture from China to HM Queen Margrethe of Denmark.

The 4000 square meter Panda House is designed by architect company BIG and financed by a range of Danish companies and foundations, including Grundfos.

We have supplied 15 MAGNA3 circulation pumps and one PUST pumping station to regulate heating, cooling and water, which includes a stream running through the complex.

Installation work has been carried out in cooperation with installer company C5 VVS & Ventilation A/S. For Grundfos, the project was a chance to ensure comfortable surroundings for the furry travelers in a setting, which emulates the animals’ natural surroundings.

“I am not sure we have ever delivered solutions for pandas, but together with ZOO, designers and installers, we have worked hard to ensure they will enjoy their new home. I feel privileged that we were able to back this project and contribute our knowledge and products to such a fantastic complex, designed with a great focus on animal welfare,” says Brian Sørensen, Sales Director, Grundfos.

Historic event

At Copenhagen ZOO, preparations have been underway for almost 10 years. Expectations are high ahead of the grand opening of Panda House.

“Thanks to contributions from 16 large Danish companies, we have built a facility that will raise Denmark’s profile internationally for many years to come. We have had animal caretakers, zoologists and veterinarians on education in China and been in close dialogue with Chinese professionals since 2010. And we have not least a whole plantation on South Zealand with sprawling fresh bamboo. So I dare say: we are ready to accept our newest residents, because this is, in the original sense of the word, a historic event,” says Jørgen Nielsen, CEO of Copenhagen ZOO.

Symbol of friendship

Pandas are a national treasure in China, and Denmark is only the 19th country ever to receive pandas. The gesture is a symbol of friendship and trust that rings true for overall Sino-Danish relations and the special bond between Grundfos and China.

“It is very rare that pandas are sent to other countries, so this is indeed a humbling and great honor, which illustrates the excellent friendship between Denmark and China. Our involvement in this project makes perfect sense, as we have forged strong links with China over the years,” says Brian Sørensen.

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Pumps

MAGNA3 gets environmental certificate

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In an industry first, our circulator pump now comes with an Environmental Product Declaration, documenting the product’s impact on the environment.

The footprints left by MAGNA3, in terms of energy consumption, chemical substances and emissions, have been detailed in an Environmental Product Declaration (EPD). It is the first time any pump manufacturer acquires an EPD in accordance with the European standard EN 15804.

“It is a very important step for Grundfos to be able to document towards our customers the environmental performance of our products in a standardised way,” says Mathias Høeg, Senior Life Cycle Assessment Specialist at Grundfos.

Widely requested

The third-party verified document, issued by independent assessors at the German Institut Bauen und Umwelt, communicates transparent, comparable information about the product’s life-cycle impact.

Having an EPD does not necessarily imply that the declared product is environmentally superior to alternatives. It simply provides facts, which are widely requested among Grundfos customers and partners.

“This area is becoming a hot topic here. As an example, with a strong focus on Nearly Zero Energy Buildings, the architect on an upcoming housing development project requires an EPD for the pumps,” says Mark O’ Sullivan, Sales Engineer at Grundfos Ireland in a sentiment echoed in various markets around the world.

 More products in sight

The next step will be to obtain the EPD for even more products, which falls in line with Grundfos’ ongoing ambitions to deliver as energy-efficient and environmentally friendly products as possible and to do so in a transparent manner.

“Working with EPDs and life cycle assessment influence the way we develop new products. Environmental performance will be considered alongside other design criteria such as price and functionality. This is possible because environment as a term can now be measured and communicated in numbers and graphs,” explains Mathias Høeg.

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