China Over Head CV Drive Mining Slurry Pumps

Over Head CV Drive Mining Slurry Pumps

Naipu® NAH series centrifugal slurry pumps and spare parts can fully interchange.These pumps are of heavy-duty construction,designed for continuous pumping of highly abrasive and corrosive slurries.They feature a wide choice of replaceable abrasion resistant metal or moulded elastomer casting liners and Impellers,which are all interchangeable within a common casting assembly.

DescritionValueProducts NameHorizontal Slurry PumpDischarge Size1 - 18 inchFlow (m3/h)12.6-5400m3/hHead (m)6-118mMax Power(kw)1200kwMaterialHigh Chrome A05, Cr27- Cr 30%, Rubber R55, R33 etc. Drive TypeCV / ZVz/ CRz/ DCz/CLDrived EngineMotor or DieselSeal TypePacking Seal, Expeller Seal, Mechanical Seal,Dyna Seal MQQ1 setPayment TermTT, LC, or NegotiateOriginalShiJiaZhuang, Hebei ChinaSupply RangeSlurry Pump, Motor, base Plate, Guard, V-belt, PulleyWeight--Delivery TermBy Sea, By air, By TNT, DHL, By Train

Typical Applications--
Minerals Flotation Processing
Electric Factory Coal Preparation
Coal Washing
Chemical Medium Processing
Effluent Handling
Salt and Sugar IndustrySand And Gravel Handling
Construction Drawing

LINERSIMPELLERSCASINGbaseEXPELLEREXPELLER RINGSHAFT SLEEVESEALSStandardChrome Alloy
Natural RubberChrome Alloy
Natural RubberSG IronSG IronChrome Alloy
or
SG IronChrome Alloy
or
SG IronSG IronRubber
and
NitrileOptionsFerralium
Hastelloy C
316 SS
W151
Polyurethane
Neoprene
Butyl
Viton
Nitrile
EPDM
HypalonFerralium
Hastelloy C
316 SS
W151
Polyurethane
Neoprene
Butyl
Nitrile
HypalonSG Iron
Various gradesMS
Fabricated
Cast IronNI Resist
Ferralium
Hastelloy C
Polyurethane
316 SS
W151NI Resist
Ferralium
Hastelloy C
316 SS
Rubber
W151
Polyurethane
Neoprene
Butyl
NitrileEN56C
Ferralium
Hastelloy C
Titanium
316 SS
304 SSCeramic
Stellite
Chrome Oxide
Nordel
Neoprene
Viton

Pump Performance Parameters
Naipu® NAH metaL LINER PUMP WORK PARAMETER

TypeAllowable Mating Max.Power(Kw)Clear Water PerformanceImpellerCapacity/Q m³/hrHead/mSpeed/rpmMax Efficiency/%NPSH/mNos of VaneImpeller Diameter/mm1.5/1NAH1512.6--28.86--681200--3800402--451522/1.5NAH1532.4--726--581200--3200453.5--851843/2NAH3039.6--86.412--641300--2700554--652144/3NAH3086.4--1989--521000--2200714--652456/4NAH60162--36012--56800--1550655--853658/6NAH300360--82810--61500--1140722--9551010/8NAH560612--136811--61400--850714--10568612/10NAH560936--19807--68300--800826576214/12NAH5601260--277213--63300--600773--10596516/14NAH12001368--306011--63250--550794--105106720/18NAH12002520--540013--57200--400855--1051370

Drive Type:
There are mainly 4 installation types,
1.DCz Type
The output shaft of a motor is directly connected to the input shaft of a pump via a pump coupler.This type of connection is suitable for applications where the speed of the slurry pump is the same as that of the motor.
2. CVz Type.
The pump is driven by a belt connected to the crankshaft of the engine.This way of connection allows for saving space,easy installation,and fast adjustment of pumping speed.The motor is fixed to the motor support frame which is located on the bearing support above the slurry pump.
3.ZVZ Type
Another type of belt drive that allows easy adjustment of pumping speed.The motor is directly fixed to the bearing support.This way of installation is suitable for motors with large horsepower than is possible with CV type of installation.Due to the installation of motor onto the bearing support,this method helps save installation space.
4.CRz Type
This type of belt drive makes it easier to adjust pumping speed.The installation allows both the motor and slurry pump to be fixed to the ground.The motor is installed to the side of the pump.The installation method is suitable for large-power motors.

Seal Types:
There are 3 seal types,expeller seal,packing seal and mechanical seal.
(1) Expeller Seal. Use pressure seal produced by impeller and expeller in series,packing or lip sealing ring for shut down seal.The main parts are Expeller ring,Expeller,Packing,Packing Gasket,Water Seal Ring ,Packing Gland,Oil Cup
(2) Packing Seal. The routine sealing systems are suitable for various conditionsand can be used in the corrosion or high temperature conditions such as teflon packing,graphite packing etc.It also can be used in strong abrasive condition duty with shaft ceramic sleeve of spray weld. The main parts are Packing Box,Front water seal Ring,Packing,Packing Gland,Shaft Sleeve.
(3)Mechanical Seal. World-advanced technique without sealing leakage,integrating construction,convenient installation & replacement,various constructions suit for all kinds of conditions.High hardness ceramic and alloy are adopted for material of friction parts.Design & matching of mechanical seal & sealing box is suitable for fluid state.It possesses high abrasive resistance & shakeproof to guarantee that sealing effect can be satisfied by customers in various conditions.The main parts are stationary ring assembly and Movable ring assembly.

Parts Material

Spare part NameMaterialSpecificationHRCApplicationOEM Code
Liners&Impellers
Hard metalHigh Chrome White Iron 23-30%≥56Used for higher wear conditions with pH Between 5 to 12. A0515/3Chrome/Moly Iron≥59With moderate erosion resistanceA07ULTRACHROME 28% Cr, Low C43Used for FGD and other corrosive applicationA49
RubberStandard Impeller Rubber Used for superior erosive resistance requiredR08Standard liner Rubber Have superior erosion resistanceR26Natural Rubber- Reinforced Sufficient wear lifeR33Nature Rubber Cut resistance to hard, sharp slurriesR55Expeller & Expeller RingmetalULTRACHROME 27%Cr≥56Used for higher wear conditions with pH Between 5 to 12. A05Grey Iron High physical strengthG01Stuffing BoxmetalULTRACHROME 27%Cr A05Grey Iron G01frame/cover plate
Bearing Housing& base
metalGrey Iron G01Ductile Iron D21ShaftmetalCarbon steel E05Shaft Sleeve
Lantern Ring/ Restrictor
Neck Ring/ Gland Bolt
Stainless Steel4Cr13 C21304SS C22316SSC23Joint Rings & Seals
RubberButyl Rubber S21EPDM Rubber S01Nitrile S10Hypalon S31Neoprene S11/S42Viton S50

Product Overview:
For the AH pump types,we can provide as below,
1.5/1B-AH(R) 2/1.5B-AH(R) 3/2C-AH(R) 4/3C-AH(R) 6/4D-AH(R) 6/4E-AH(R) 8/6E-AH(R)
8/6R-AH(R) 10/8F-AH(R) 10/8ST-AH(R) 12/10ST-AH(R) 12/10FF-AH(R) 14/12G-AH(R)
14/12ST-AH(R) 16/14TU-AH(R) 20/18TU-AH(R)

Our Workshop Show:
NAIPU PUMP is a whole processing company, Start from Modeling Workshop,Casting Workshop,Heat treatment Workshop,Machining Workshop ,Assembly Workshop and Pump Testing Workshop are all by us. So we are modernization and integrated company to satisfy the requirement of the changing needs of market.
We set various check points along the whole production line,which throughout Raw Material,Charging Material,Surface and Heat Treatment checking,Material Analysis,Spare Testing and Pump Testing etc.
Possible Faults and Settlements

Faults Reason Settlement1.Pump fails to discharge any water,The hand of pressure gauge beat violently 1.Suction pipe don't have enough water.
2.Suction pipe blocked or the valve is locked.1. Inject enough water
2.unlock the inlet valve,clear the blocks
3.Exclude the air leakage 2.The pump can't discharge water,the hand of vacuum meter beat heavily. 1.The inlet valve is unlocked or silted up.
2.The resistance of suction pipe is too big or silted up.
3.The height of suction is too high. 1.Unlock the valve or desilting
2.improve the design of suction pipe or desilt
3.Lower the height of the installation.3.The pump can't discharge water,pressure gauge shows heavy pressure.1.The resistance of the discharge pipe is too big.
2.The impeller blocked
3.The speed is slow.1.Check and adjust the outlet pipe.
2.Clear the impeller
3. Improve the speed.4.The pump doesn't rotate The volute is silted up by the blocks. Clear the blocks5.The capacity is not enough 1.The blocks of the impeller or the inlet or outlet pipe.
2.The abrasion of the impeller is heavily.
3.The speed is low to normal
4.Pump is installed unreasonably or the leakage of the inlet pipe.
5.The transporting height is too high,the loss of the resistance of the inside pipe are too big.
6.The inlet valve not open enough or blocked
7.The packing seal leaks1.Clear the impeller or pipe.
2.Change the impeller
3.Adjust the speed
4.Install again or stop leaking.
Decrease the height of the transport or reduce the resistance.Unlock the inlet valve Compress the packing tightly6.The motor of the pump is overloaded 1.The head of the pump exceeds the head of the working condition.
2.Not consider the slurry density when selecting the pump.
3.The packing press tightly1.Turn down the outlet valve,cut the impeller or lower the speed.
2.Select the motor again.
3.Adjust the the screw of the packing gland 7.Abnormal sound in the pump, and no water out1.The resistance of the inlet pipe is too big.
2.The height of the suction is too high.
3.Cavitation occurred there is air in the inletThe temperature of the liquid is too highClear the suction pipe and sluice valve.Lower the height of the suction Adjust the water valve and let the pump operate in the defined limits.Block the leakage.Lowering the liquid temperature.8.pump vibrates1.pump cavitate
2.The block of the impeller single vane
3.The no concentricity between the pump shaft and motor shaft
4.Fasteners or foundation loose1.Adjust the water valve ,lower the height of the installation,reduce the resistance of the inlet.
2.Clear the impeller
3.Alignment again
4.Fasten the screw,and reinforce the foundation.9.Bearing is overheat 1.lock the cooling water
2.lubrication is not good.
3.the lubrication oil is not clear
4.the wrong direction of the thrust bearing.
5.there is something wrong with the bearing.Open the cooling waterAdjust the oil quantity Clear the shaft,change oilAccording to the inlet pressure,adjust the direction of the thrust bearing.Change the bearing 10.Packing short life The material of packing is not good Change the packing 11.pump leak oil1.High oil level
2.The rubber parts invalid
3.Assembly problem1.Lower the oil level
2.Change rubber spares
3.Adjust the assembly
12 Pump head leaking 1.The rubber parts not press wellAssembly again or press tightly

Applications
Alumina / Copper / Oil Shale / Asbestos /Electric Utilities /Phosphate /Bauxite /Gold / Potash /Buliding Products /Iron Ore / Paper & Pulp /Cement /Lead & Zinc /Sand & Gravel / Coal /Mineral Sands /Silver Chemical Fertilizer/Molybdenum /Steel /Wolfram & Scheelite /Sugar /Titanium /Water &Sewage Utilities /Tin /Tobacco
Heavy Mining | Mineral Processing | Sand and Gravel |Coal Prep | Cyclone Feeds | Aggregate Processing | Fine Primary Mill Grinding | Chemical Slurry Service | Tailings | Secondary Grinding | Industrial Processing | Pulp And Paper | Food Processing | Cracking Operations | Ash Handling | Pipeline Transport | High Velocity Hydraulic Transport |Food Processing | Explosive Sludge In metal Smelting | River And Pond Dredging | Heavy Refuse Removal | Larger Particle Or Low NPSHA Applications | Continuous (Snore) Sump Pump Operation | Abrasive Slurries | High Density Slurries | Large Particle Slurries | Sump Drainage | Wash down | Floor Drainage | Mixing | Iron Ore | Cooper | Diamond | Alumina | Coal | Gold | Kaolin | Phosphorite | Steel | Palm | Suger | Chemical | Power | FGD | Frac Sand Blending | Construction | City Sewage | etc.
Contact Us
Contact Person: Karen Tan

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