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Dredge Pumps

ZN Series High Efficiency New Designed Dredger Pumps

Capacity range: 750-25000 m3/h

Head range: 20- 85m

Speed range: 180-850rpm

Power range: 2500kw in max

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  • Products detail

ZN series high-efficiency dredge pump is a new single-stage, single suction, cantilever horizontal centrifugal dredge pump, especially suitable for dredging, filling and other operations in Rivers and Lakes, which fully meets the requirements of dredgers for pumps. The wet parts are made of 27% wear-resistant high chrome alloy, with high head, large flow, high efficiency, good NPSH and other advantages; Sustainable output of gravel, mud, etc. It is applicable to the fields of river dredging, old sand reclamation, and explosive sludge treatment in metal smelting.


Products Model

Model          

Outlet/Inlet Diameter

(mm)

Capacity

(m3/h)

Head

(m)

Speed

(r/min)

Efficiency

η(%)

NPSH (m)

Solid Handling

(mm)

Impeller Dia.

(mm)

Weight

(kg)

ZN250250/3501100-130040-65500-65070-7441449205050
ZN300300/4501800-220040-65400-55074-7842001140
ZN450450/6003200-385040-67350-50076-804.5220127012000
ZN500500/6504500-550040-65350-45078-804.8230140010000
ZN550550/7005000-850017-32240-315804.8281139013600
ZN600600/6605000-900055-80280-42084-856320144016500


Performance Curve

ZN Series High Efficiency New Designed Dredger Pumps

Features

1. Cantilevered, horizontal, centrifugal, one stage, single casing pump;

2. High head, large capacity, high efficiency, good NPSH performance;

3. Long bearing life, the bearing assembly with large diameter shaft and short overhang;

4. Wear-resistant wet parts, the wet parts are made of Ni hard and high chromium abrasion resistant alloys. (more than 27% Chrome alloy);

5. The shaft seals can be gland seal or Lip seal;

6. The discharge branch can be positioned at interval of 45 degrees by request and oriented to any eight positions to suit installations and applications.

7. Front-disassembly design for easy disassembly& maintenance; According to the feature of each part, equip the specificity disassembly tools for disassembly.

8. The standard four-head trapezoidal thread is adopted to connect between the impeller and shaft. It both transfers strong torque and easy dis&assembly. Set an impeller release collar between the shaft and the labyrinth to aid disassemble the impeller conveniently.


Structure

ZN Series High Efficiency New Designed Dredger Pumps

Newly designed frame Advantages:

1. Optimize the impeller and pump casing through hydraulic analysis to increase overall efficiency. The thick wall of the pump body has been added to improve strength.

2. All wet parts are made of high chrome alloy (pump casing, impeller,  throatbush, back plate), suitable for transferring high abrasive mortar.

3. The traditional double shell design has been changed to a single shell design to maintain the pressure bearing capacity of the pump, thereby better ensuring its performance and service life.

4. Light weight, good wear resistance, good dredging performance, it is very suitable for dredging applications.


Pump Mainly Parts & Material List
NOPart NameMaterialNOPart NameMaterial
1Pump cover plateCast iron7Stuffing boxHT200
2Throat bush27%chrome alloy8Lantern ring1Cr18Ni9TI
3Impeller27%chrome alloy9Packing glandHT200
4Pump casing27%chrome alloy10ShaftHigh tense steel
5Back plate27%chrome alloy11Bearing bodyHigh strength steel
6Joint plateCast iron12FrameHigh strength steel


Applications

High efficiency horizontal dredge pump are designed for heavy duty applications such as mining, power sector, dredging river, and tailings as well as specialty applications, which are used for continuous pumping of high abrasive, high density sand and gravels.

Mineral ProcessingPower GenerationAggregate
Ash HandlingFlue Gas DesulfurizationThickener & Tailings
Mine DewateringIndustrial SlurriesDredge

ZN Series High Efficiency New Designed Dredger Pumps

Pump Display

ZN Series High Efficiency New Designed Dredger Pumps