Manufactured by leading Japanese submersible pump manufacturer, Tsurumi, these new pumps have been designed for use in concrete mixing and batch plant applications.
They are designed to agitate and mix concrete, as well as aiding in the reclamation of materials from unused concrete at batch plants.
These KRS slurry pumps offer capacities of up to 3,250 litres per minute flow, and heads as high as 22 metres. The complete series includes discharge bores from 80mm, all the way through to 150mm.
Fitted with three phase, heavy duty four pole high efficiency motors, they also offer thermal and amperage protection against dry running or overloading.
Craig Bridgement from Aussie Pumps explains that “the pump has been designed with a top discharge so it suits concrete or slurry mixing. The liquid passing through the pump also cools the motor, making the pump even suitable for use in applications with low water levels.”
KRS submersible pumps also feature a newly developed double mechanical seal, which utilises top and bottom silicon carbide seal faces running in an oil filled chamber to ensure extended life.
The mechanical seal also includes a unique oil lifter, which has been developed to enhance seal performance. The unique design of the mechanical seal enables the lifter to oil the top seal faces, even if the lubricant level drops below manufacturer’s recommendations. The lubrication cools the seal faces, providing longer life, and reducing wear.
A high capacity semi open style impeller is used in Tsurumi KRS submersible pumps to enable a combination of flow and pressure, even in the toughest conditions. The impeller is constructed from high chrome cast iron to provide solid wear resistance, while the suction cover is made from ductile cast iron to ensure a long, trouble free life.
In addition, the shaft seal on these slurry pumps is a double design, silicon carbide, whilst the pump shaft is 420 grade stainless steel.
“The heavy duty KRS series is expected to be of real interest to the cement batch plants, particularly for concrete waste re-cycling,” says Bridgement. “Water can be removed from sand and gravel pits, leaving the material ready for re-use.”