Product Overview

The NP Series Non-Clog Industrial Pumps are horizontal end-suction centrifugal pumps specially designed for handling media containing fibers, solid particles, and other impurities. This series employs innovative non-clog impeller technology, capable of efficiently conveying media that traditional centrifugal pumps struggle with.

Based on a mature industrial pump technology platform, NP pumps combine advanced non-clog design with precision manufacturing processes, ensuring excellent performance and reliability when handling solid-containing media. Whether conveying fiber-containing wastewater, slurry with large particles, or other complex media, NP pumps provide ideal solutions.

With their horizontal end-suction structure, these pumps are easy to install and maintain, widely used in wastewater treatment, papermaking, food processing, and other industries.

Structural Features

• Horizontal End-Suction Design – Compact structure, easy installation and maintenance, space-saving
• Back-Pull-Out Structure – Allows maintenance and replacement of internal components like impellers and mechanical seals without disassembling the pump casing or pipelines
• Non-Clog Design – Optimized flow channels and impeller design effectively prevent fiber entanglement and solid clogging
• Heavy-Duty Bearing Assembly – Uses high-capacity bearings and optimized lubrication systems to ensure long-term stable operation
• Multiple Sealing Options – Provides various sealing forms including mechanical seals, power seals, and packing seals to adapt to different working conditions
• Modular Design – Standardized component design improves interchangeability and reduces spare parts inventory
• Optional Built-In Liquid Ring Vacuum Pump – Can be configured with a built-in liquid ring vacuum pump to achieve degassing and self-priming functions without additional vacuum auxiliary equipment

Impeller Types

NP pumps provide two efficient non-clog impeller designs specifically for handling media containing fibers and large particles:

Vortex Open Impeller

Utilizes an open design that conveys media through vortex effect, offering excellent non-clog performance. Suitable for conveying media containing long fibers, entangling materials, and large solid particles, effectively preventing clogging and entanglement.

Channel-Type Non-Clog Closed Impeller

Features a wide-flow channel closed design, ensuring smooth passage of large solid particles through optimized blade shape and channel dimensions. Combines high efficiency with non-clog characteristics, suitable for conveying media containing medium-sized particles.

Impeller Selection Guide

Technical Parameters

Performance Features

• Non-clog design: Specifically designed for media containing fibers and large particles, with excellent anti-clog performance
• High efficiency and energy saving: Optimized hydraulic design balances non-clog performance and high efficiency
• Wide performance range: Meets various flow and head combination requirements
• Smooth operation: Precision dynamic balancing testing ensures low vibration operation
• Wear-resistant design: Key components use wear-resistant materials to extend service life
• Optional self-priming function: Achieved through built-in liquid ring vacuum pump, no need for pump priming
• Optional degassing function: Built-in liquid ring vacuum pump removes gases from the pump, preventing cavitation

Optional Functions

Built-In Liquid Ring Vacuum Pump – Degassing Function

NP pumps can be optionally equipped with a built-in liquid ring vacuum pump to achieve efficient degassing function. This function is particularly suitable for the following situations:

• Handling media containing gases to prevent cavitation
• When air needs to be removed from the pump and pipelines before system startup
• When media tends to generate gases and requires continuous venting

Built-In Liquid Ring Vacuum Pump – Self-Priming Function

By configuring a built-in liquid ring vacuum pump, NP pumps can achieve self-priming function with the following advantages:

• No need for pump priming, simplifying startup procedures
• Suitable for working conditions with high suction lifts
• Can handle situations where there are gases at the suction port
• Reduces the need for auxiliary equipment, lowering system costs

These optional functions enable NP pumps to adapt to a wider range of application scenarios, providing more flexible solutions.

Material Selection

NP pumps provide multiple material options to adapt to the corrosion and wear requirements of different media:

Material Characteristics Description

• Duplex Stainless Steel 2205: Excellent corrosion resistance and high strength, suitable for most corrosive media
• 2507 Super Duplex Steel: Higher corrosion resistance and strength, suitable for highly corrosive environments
• Stainless Steel 304/316: Good corrosion resistance, suitable for general corrosive media
• High-Chromium Cast Iron: Excellent wear resistance, suitable for high-wear working conditions

All materials can be custom-selected according to specific application media characteristics, temperature, pressure and other conditions to ensure optimal performance and lifespan.

Sealing Systems

NP pumps provide multiple sealing options to adapt to different working conditions and application requirements:

Mechanical Seals

• Single Mechanical Seal: Suitable for general working conditions
• Double Mechanical Seal: Suitable for hazardous media or conditions requiring higher safety
• Cartridge Mechanical Seal: Easy installation, reliable performance

Power Seals

• Expeller Seal: Suitable for media containing particles, non-contact seal, long service life
• Combination dynamic seal: Combines the advantages of expeller and packing seals

Packing Seals

• Traditional Packing Seal: Simple structure, easy maintenance
• Imported Packing Seal: Uses high-performance packing, minimal leakage, long service life

Seal Selection Guide

Application Fields

NP Series Non-Clog Industrial Pumps are widely used in the following industries and fields:

Wastewater Treatment

• Municipal wastewater treatment plants
• Industrial wastewater treatment
• Sludge conveyance
• Sewage lifting after screens
• Sedimentation tank sludge discharge

Paper Industry

• Pulp conveyance
• White water circulation
• Wastewater treatment
• Filler and coating conveyance
• Waste paper pulp processing

Food Processing

• Fruit and vegetable processing wastewater
• Slaughterhouse wastewater
• Food residue slurry conveyance
• Cleaning water circulation
• Waste treatment systems

Other Industrial Applications

• Solid-containing media in chemical processes
• Ash and slag handling in power industry
• Construction site drainage
• River dredging
• Textile industry wastewater treatment