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EN jun16-LR

Cutter clears clogs www.engineeringnews.co.nz 33 Filters are readily accessed by removing the interior baffle, and replaced using quick-disconnect fittings. The conveyor moves material using high-strength polymer discs affixed to a stainless steel or galvanised cable, that slide fragile materials within smooth stainless steel tubing, gently, quietly and dust-free, horizontally, vertically or at any incline. The discs and cable are driven by a wheel at one end of the circuit and put under tension by a wheel at the other end, and fully evacuate the conveyor of material. The modular system can have single or multiple inlets and outlets, and convey over short distances or hundreds of metres. Keeping settling ponds in optimum condition without taking the sewage plant offline represents real cost savings. Dredging Solutions from Sydney NSW are now able to offer this option due to an innovative application of a Tsurumi submersible cutter pump. While dredging ponds for Sydney Water, the company were faced with pump chokes caused by accumulated rags. Normal submersible pumps cannot cope when oversized, fibrous materials get flushed into the system. Dredging Solutions turned to Aussie Pumps for a suitable cutter pump to solve the ragging problem. Tsurumi, a world leader in submersible pump development, has produced a range of cutter pumps, called the C Series, designed to handle such contaminated waste. The C series cutter pumps chop waste material, including rags, thus allowing free passage through the pump without clogging. “Tsurumi’s breakthrough cutter impeller chops through sewage, rawhide, plastic, rags and other materials in seconds,” says Aussie Pumps product manager Neil Bennett. “We’ve seen various unmentionables handled by these extraordinary pumps so they were an obvious choice for Dredging Solutions' ragging issue.” The C Series incorporates a large open channel impeller with a cutter mechanism. A sintered tungsten carbide alloy tip is brazed on the impeller vane. As the impeller rotates the vane slices against the serrated edge of the suction cover, chopping fibrous matter into small fragments that won’t clog. The 3 phase, heavy-duty pumps range from 50mm bore to 100mm. The largest pump in the range has an enormous capacity of 2,750 litres per minute, and a max head of 26 metres. Like all Tsurumi submersible pumps, the C Series include features that extend the life and enhance reliability of the pump. Significant design details make a big difference. They include an anti-wicking cable entry that prevents water from entering the motor if the power lead is damaged or the end of the cable is accidentally submerged. A double silicon carbide seal is standard on all models. Both seal surfaces are submerged in an oil chamber, away from the pumped liquid. This ensures lubrication and protects ingress of foreign materials. The oil bath features a patented ‘oil lifter’ that increases mech seal longevity. The lifter ensures both the upper and lower seals are lubricated and cooled, even if the oil level in the chamber is low. MaxiCoat ® Epoxy floor & wall coating system MaxiCoat is ideal for heavy duty traffic areas; has a very high chemical resistance, is NZFSA approved and has the strength of conventional oil-based coatings, but with the safety and convenience of water as a solvent. Only two coats are required to give a durable long lasting finish, reducing cost and application time. MetalFix can be used as a primer in heavy rust situations. Water based & durable for a long lasting finish Key applications: * Forecourt & showroom floors or walls * Car garages & workshops * Aircraft hangar floors * Cold storage rooms * Light & heavy industrial factories * Food processing plants & freezing works * Fishing vessels, ships & offshore installations KTKemTek 03 688 2160 www.kemtek.co.nz HM039


EN jun16-LR
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