WN dredge pump brochure

WN Series Dredge Pumps
250-1200mm
SHIJIAZHUANG AIER MACHINERY CO., LTD
SHIJIAZHUANG HEBEI, CHINA

AIER 爱尔机械
MACHINERY WN Series Gravel Pumps
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Http://www.aiermachinery.com E-mail: sales@aiermachinery.com All the right to alter technology documents reserved
Company Introduction
Shijiazhuang Aier Machinery Co., Ltd. is a large-scale professional manufacturer of slurry pumps, gravel
pumps, dredge pumps, sewage pumps and clean water pumps in China.
All products are mainly supplied to environmental protection, wastewater treatment, urban water supply
and drainage, mine, metallurgy, coal, petrochemical, building material, thermal power FGD, river
dredging, tailing disposal and other fields. The products are selling well in China and sold far to
Germany, U.S., Canada, Australia, Russia, Ukraine, Kazakhstan, Brasil, Chile, Argentina, Bolivia,
Malaysia, Indonesia, India, Poland, South Africa, Tanzania, etc.
Our firm has strong technical force and is specially engaged in the research of abrasion resistant
materials of slurry pumps, sewage pumps and water pumps and the development of new products. The
materials include high chrome white iron, duplex stainless steel, stainless steel, ductile iron, rubber, etc.
We use CFD, CAD method for product design and process design based absorbing experience of world
leading pump companies. We integrate molding, smelting, casting, heat treatment, machining and
chemical analysis, and have professional engineering and technical personnel.
Our company started to build our new factory in 2013 and finished in Spring of 2014. The new factory is
located in Lincheng Xingtai Hebei, covering 67,000 m2
and of annual design annual casting capacity
3,000 tons. In the new factory, we can produce different parts from small to huge. Casting & machining
orders are welcome as well.

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Pump Introduction
Construction
200WN to 500WN dredge pumps are of single casing, single stage cantilevered horizontal centrifugal
pumps. Two types of coupling with gear box: frame and pump box.
600WN to 1000WN dredge pumps are of double casings, single stage cantilevered centrifugal pumps.
These pumps are equipped with frame and lubrication is force thin oil. The design of double casing the
pump working till the volute liner almost worn down and guarantee no leakage when volute liner is worn
down.
Easy Uninstallation & Convenient Maintenance
WN dredge pump is of front uninstallation construction to make uninstall easily and convenient
maintenance. And special tools are equipped for uninstalling the parts.
Standard four-head trapezoid thread connection between impeller and shaft can transfer powerful
torsion and be convenient to uninstall. Impeller uninstall ring at shaft sleeve side also make the impeller
uninstallation much easier.
Good Performance
Good NPSH can not only guarantee suction but also make deep dredge and high allowable suction
density. Minimum NPSH: 4m.
With wide impeller passage, pump can continuously pump gravel or high plastic clay without clogging.
Max allow particle size: 350mm.
Performance curves descend obviously to make pumps adopt pipeline distance changes.
By changing the impeller diameter or impeller rotating speed, it can easily change the discharge with
the same flow rate.
Material
Material of wet parts is high wear resistant high chrome alloy.
Considering the maintenance, wear resistant parts are nearly of the same wear life to reduce maintenance
& interchange costs.
Low Hydraulic loss, High efficiency, Energy Saving
Efficiency of WN is 2 or 3 percentage higher than other common pumps.
Reliable Shaft Seal, No leakage
Shaft Seal types of 200WN to 500WN: Mechanical seal, packing, or combination of mechanical and
packing
600WN to 1000WN uses helical casing L rubber seal which is made of 3 pieces of L seal ring and one
special thread shaft sleeve.
Turning
700WN to 1000WN can be equipped with turning to change rotating directions.

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Pump Performance

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Pump Construction

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Shaft Seal Type

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Pump Turning Construciton

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Installation Dimensions

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WN dredge pump brochure

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