Positive Displacement
Tools that are used for positive displacement in mining applications need to be reliable and provide a large amount of up-time to be useful to your business. At Weir Minerals, you will find a variety of pumps and other equipment used in positive displacement in a variety of industries. This includes their newest addition to their products list, the GEHO ZPR pump. This pump is a crankshaft driven one or two cylinder double-acting piston pump that is useful in low and moderately abrasive slurries which are economically handled by the crankshaft driven pumps. The piston pumps are operated at moderate stroke speeds to optimize wear part performance in comparison to mud pumps and plunger pumps. The GEHO has many features to make it the ideal choice in positive displacement.
The features of the GEHO that give you the maximum results in positive displacement include its capacities of up to 145 m3/h and pressures up to 40 bar. While the capital expenditure of this piston pump is substantially lower than that of an equivalent size diaphragm pump and offsets the piston and liner parts usage when pumping mildly abrasive slurry and/or moderate pressure. It has a modular design that shares the power end, the valves and pulsation dampener with the extensive range of GEHO piston or a piston diaphragm pump making it the economical choice for positive displacement when pump.
The design of the piston positive displacement pump distinguishes itself from a so-called mud pump as well as from a flushed-plunger pump in that the stroke is longer, it has a lower stroke rate, and it utilizes genuine slurry valves and all power end components come with an inherent long wear life regardless of whether the speed varies over a wide range. Its power end with cast frame transmits energy via an external V-belt drive and an internal gear reducer to the pistons by means of a forged steel, direct driven crankshaft, cross heads with replaceable guides and connecting rods. Clamp couplings and a special tool facilitate the removal of the piston and liner while ceramic lined and hard surfaced liners are available to prolong the liner wear life.
Positive displacement of abrasives can’t be performed successful with ever pump and the GEHO is designed specifically for those jobs that would normally cause advance wear and tear. Spray flushing of the liner bore further reduces friction and wear and the poppet (check) valves are readily accessible for maintenance with oil-hydraulic release of the tapered cone valve seat. This is the newest model pump for positive displacement available at Weir Minerals and you can rely on them, as always, to provide you with the high quality product that is designed to meet your demands and the superior service to back them.
Visit www.WeirMinerals.com to see all of the pumps available for positive displacement and the many industries served with their products. You will also have access to the news about their service in the mineral and mining applications as well as their tradeshow calendar so you can plan when to visit a display of the different pumps available in your area.
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