PN/PNL Mud Pump – Horizontal & Vertical Single Stage Slurry Pump

PN/PNL Mud Pump – Horizontal & Vertical Single Stage Slurry Pump

PN/PNL Mud Pump (H/V) | Single-stage slurry transfer

  • Slurry duty: Solids-laden mud handling.
  • Wear-resistant wet end: Replaceable wear parts.
  • H/V options: Layout flexibility.
  • Easy service: Straightforward maintenance.
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Product Overview

The PN and PNL series use single-stage, single-suction slurry pumps, available in horizontal (PN) and vertical (PNL) configurations. These pumps are designed to handle slurry with sand, sludge, and similar solid particles. The series is designed with simple structure and reliable operation, emphasizing abrasion resistance and long-term stable service, making it ideal for industrial applications that require solid particle handling.

Model Designation

PNPNL Mud Pump

Key Features

  1. Powerful Solid Handling Capability: The pump is capable of handling slurry with solid particles, equipped with a single or double-channel impeller design to process water containing sand, slurry, and fibers effectively.

  2. Efficient Sealing System: The double hard-faced mechanical seal ensures zero leakage operation, providing reliable sealing performance and extended service life.

  3. Flexible Installation: The pump can be easily installed in various configurations, allowing it to fit multiple piping systems without requiring additional installation space, simplifying maintenance.

  4. Low Maintenance Requirements: Designed for easy maintenance, the pump features an integrated structure that allows for quick disassembly and reassembly, reducing downtime and maintenance costs.

  5. Durable Materials: The pump is made with abrasion-resistant cast iron to ensure a long lifespan, even in tough conditions.

  6. Adjustable Impeller Clearance: The gap between the impeller and wear plate is adjustable, helping maintain high operational efficiency while compensating for wear.

Engineering Overview

The PN/PNL series has a capacity range from 7 to 1430 m³/h and a head range from 12 to 160 meters. The pump adopts a single-stage, single-suction centrifugal design, with options for horizontal or vertical layouts to accommodate different installation arrangements and operational requirements.

Typical Applications

The PN/PNL series is widely used in the following fields:

  • Mining Industry: For handling slurry with sand, small stones, and similar solid particles.

  • Metallurgy Industry: For slurry transport in metal smelting processes.

  • Municipal Construction and Chemical Processing: For handling slurry containing solid particles.

  • Printing and Dyeing Industry: For transporting slurry with solid particles.

  • Agriculture and Rural Areas: Suitable for river dredging, pond sludge, manure, and similar slurry transport, as well as mineral slurry, sand, and mud transport in urban and industrial operations.

System Configuration

Pump Components

The PN/PNL pump unit mainly includes the pump casing, impeller, wear plate, shaft assembly, bearing frame (or bearing housing), stuffing box (or shaft seal housing), and related components. The impeller can be either open or closed, and the casing may be a single-wall design or a double-wall structure with a liner, depending on operating conditions.

Technical Specifications

Operating Conditions

The pump is suitable for transporting slurry with sand, small stones, and similar solid particles and can be used for continuous operation. There are differences in rotational direction and bearing configurations between models, and the specific pump type should be adjusted based on the installation and operational requirements.

  • Medium: Slurry containing sand, small stones, and similar solid particles.

  • Temperature:

    • Standard Type: ≤80°C

    • Hot Water Type: ≤160°C

  • System Pressure: ≤1.2 MPa; Inlet Pressure ≥0.5 MPa (consult for special conditions).

  • Ambient Temperature: ≤40°C

  • Relative Humidity: ≤95%

Service Conditions

Regular inspection of the pump’s sealing system, impeller, and bearing assembly is recommended to ensure efficient and safe operation, extending service life.

Protection Features

The PN/PNL series pumps are equipped with multiple protection features, including overcurrent protection, temperature monitoring, and liquid level protection systems, ensuring the pump can stop operating in abnormal conditions to prevent damage to the equipment.

Selection Standards

When selecting the pump model, consider factors such as the temperature of the media, pH value, solid particle size, and the required flow and head of the pump, ensuring the selection of the most suitable configuration.

Performance Parameters

Model
Flow
Head
Speed
Required NPSH
Pump efficiency
Power
Pump weight
Port size
Shaft power
Rated motor power
Suction
m3/h
m
r/min
m
%
kW
kg
mm
1PN
7.2
14
1430
0.53
21
1.3
3
120
50
12
13
30
1.41
16
12
35
1.5
2PN
30
22
1450
1.32
33
5.45
11
150
96
47
19
39
6.25
58
17
39
6.9
2PNL
30
22
1450
1.32
33
5.45
11
250
62
47
19
39
6.25
58
17
39
6.9
3PNL
54
26
1470
2.35
32
12
22
450
125
108
21
42
14.7
151
15
37
16.7

Operating Manual

  1. Disassembly and assembly should be carried out according to the general assembly drawing.

  2. The slurry inlet pipe should not have sharp bends and should be inclined downward (about 30°) to facilitate air release.

  3. The operating cycle should be monitored, and spare parts and bearings should be replaced regularly to prevent failures.

  4. The pump should not operate with excessively low slurry inflow to avoid vibration and sedimentation of the slurry.

  5. When stopping the pump, flush it with clean water to prevent blockage.

  6. For this pump type, except for 1PN and 2PN, which have a horizontal discharge outlet, all other models have a vertically upward discharge outlet.

  7. The PN pump must be supplied with a certain amount of shaft sealing water. The sealing water flow is generally 1–3% of the working flow, and the sealing water pressure should be about 1 kgf/cm² higher than the working pressure.

  8. For models 1PN, 2PN, 3PN, 2PNL, and 3PNL, the rotation direction is clockwise when viewed from the motor end. For 4PN, 6PN, 8PN, 10PN, and 12PN, the rotation direction is counterclockwise when viewed from the motor end.

  9. In general, this pump should be installed in a flooded suction, self-priming configuration. For 1PN, 2PN, and 3PN models pumping ambient-temperature slurry, the installation position of the pump (the horizontal centerline of the pump shaft) should be 1–3 meters below the upper surface of the slurry being pumped.

  10. The pump must not be allowed to run backward when stopped.

OEM & Custom

Chaodun Pump provides full OEM customization, including branding, structural modification, and material upgrades. Available in cast iron and stainless steel variants for specific working media. We support export logistics, custom packaging, and large-scale industrial orders.

FAQs

  1. 1. What types of PN/PNL pumps are available?
    The series includes both horizontal (PN) and vertical (PNL) single-stage slurry pumps.
  2. 2. What materials are used for construction?
    Wear-resistant cast iron is standard, with stainless steel options available upon request.
  3. 3. What industries use PN/PNL mud pumps?
    They are used in mining, metallurgy, municipal drainage, agriculture, and chemical industries.
  4. 4. How to maintain pump efficiency?
    Adjust the impeller clearance regularly and ensure clean water flushing after operation.
  5. 5. Can it handle high-viscosity slurry?
    Yes, it’s suitable for slurry with small solids, sand, and mud.
  6. 6. What is the power range?
    From 1.3kW to 16.7kW, depending on model and operating conditions.
  7. 7. Does Chaodun Pump offer OEM service?
    Yes, full OEM and branding customization are available for global distributors.