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NP-L Light Abrasive Slurry Pump

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Summary
The pump mainly consists of the pump head , gearbox specifically for the dredging pump ,high elastic coupling and supervisor system of the driving device for the dredge.
Pump Type:
Centrifugal
Drvie Type:
ZVz/CRz/CV/DC
Power:
Motor / Diesel
Discharge Size:
20 to 550 inch
Capacity:
2.34-7920m³/h
Head:
6-50m
I want to inquire price
DESCRIPTION
CONSTRUCTION DARWING
SLECTION CHART
PERFORMANCE PARAMETERS

Naipu® NP-L Light Abrasive Slurry Pump

Naipu® NP-L series rugged heavy duty slurry pump for medium to lower heads. It incorporates the same design points of the NP-AH(R) and plus higher efficiency impellers at an attractive initial cost. Designed for rugged duties while offering higher efficiencies, the NP-L series is a combination of the proven NP-AH(R) unique features.The pump is available with interchangeable liner options including both metal and various grades of elastomer depending on the application.

1. Double Liner Centrifugal Pump

2. Rubber or high chrome alloy impeller

3. Large flow in medium head

4. Drive type :ZV CV DC CR CL

5. Types of 4 seal to prevent leakage :Packing Seal # Expeller Seal # Mechanical Seal # Dyna Seal

Typical Applications--

Electric Factory Coal Preparation

Coal Washing

Chemical Medium Processing

Effluent Handling

Salt and Sugar Industry

Sand And Gravel Handling

Thickener & Tailings 

Power Generation 

Mineral Processing (coal, copper, gold, iron ore, nickel, oil sands, phosphate) 

Design Features:

● Bearing assembly – a large diameter shaft with short overhang minimizes deflection and contributes to long bearing life. Only four through bolts are required to hold the cartridge type housing in the frame.

● Liners – easily replaceable liners are bolted, not glued, to the casing for positive attachment and east of maintenance. Hard metal liners are completely interchangeable with pressure molded elastomer. Elastomer seal rings back all liner joints.

● Casing – Casing halves of cast or ductile iron with external reinforcing ribs provide high operating pressure capabilities and an extra measure of safety.

● Impeller – front and rear shrouds have pump out vanes that reduce recirculation and seal contamination. Hard metal and molded elastomer impellers are completely interchangeable. Cast in impeller threads require no inserts or nuts. High efficiency and high head designs are also available.

● Throatbush – wear is reduced and maintenance simplified by the use of tapered mating faces to allow positive accurate alignment during assembly and simple removal.

● One-piece frame – a very robust one-piece frame cradles the cartridge type bearing and shaft assembly. An external impeller adjustment mechanism is provided below the bearing housing for easy adjustment of impeller clearance. 

 

Main Part Number At The Drawing

032:Frame Plate
060: Intake Joint
132:Discharge Joint
083:Throat bush
110:Volute Liner
147: Impeller
122: Stuffing Box Seal
036: Frame Plate Liner
013:Cover Plate
018:Cover Plate Liner
124: Volute Cover Seal
041: Frame Plate Liner Insert

 

NP-L PUMP MATERIALS OPTION

 

 

LINERS

IMPELLERS

CASING

BASE

EXPELLER

EXPELLER RING

SHAFT SLEEVE

SEALS

Standard

Chrome Alloy
Natural Rubber

Chrome Alloy
Natural Rubber

SG Iron

SG Iron

Chrome Alloy
or
SG Iron

Chrome Alloy
or
SG Iron

SG Iron

Rubber
and
Nitrile

Options

Acid Resist™Neoprene
Butyl
Nitrile
Hypalon

Acid Resist™Neoprene
Butyl
Nitrile
Hypalon

N/A

MS
Fabricated

Acid Resist™

Acid Resist™

Acid Resist™

Neoprene
Viton

Naipu® NP-L PUMP SELECT CHART

 

 

NOTE:APPROXIMATE PERFORMANCE FOR CLEAR WATER,TO BE USED FOR PRIMARY SELECTION ONLY.

Naipu® NP-L METAL LINER PUMP WORK PARAMETER

 

Type Allowable Mating Max. Power(Kw) Clear Water Performance Impeller
Capacity/Q m³/hr Capacity/Q L/S Head/m Speed /rpm Max Efficiency/% NPSH /m Nos of Vane

Impeller Diameter /mm

20A-NP-L 7.5 2.34-10.8 0.65-3.0 6-37 1400-3000 30   4 152.4
50B-NP-L 15 16.2-76 4.5-21.11 9-44 1400-2800 55 3.5-8 5 190
75C-NP-L 30 18-151 5.0-41.9 4-45 900-2400 57 3-6 4 229
100D-NP-L 60 50-252 13.9-70.0 7-46 800-1800 60 2-3.5 4 305
150E-NP-L 120 115-486 31.9-135.0  12-51.5 800-1500 65 2-6 4 381
200E-NP-L 120 234-910 65.0-252.8 9.5-40 600-1100 64 3-6 4 457
250F-NP-L 120 396-1425 110.0-395.8 8-30 500-800 77 2-10 5 550
300S-NP-L 560 468-2538 130.0-705.0 8-60 400-950 79 2-10 5 653
350S-NP-L 560 650-2800 180.6-777.8 10-59 400-840 81 3-10 5 736
400ST-NP-L 560 720-3312 200.0-920.0 7-51 300-700 80 2-10 5 825
450ST-NP-L 560 1008-4356 280.0-1210.0 9-48 300-600 80 2-9 5 933
550TU-NP-L 1200 1980-7920 550.0-2200.0 10-50 250-475 86 4-10 5 1213

 

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Tel: 0086-311-87162903

  0086-311-83802338
E-mail: info@naipump.com
Fax: 0086-311-83809529
Add: No.368, Xinshi North Road, Shijiazhuang City, China

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