LB Series Gear Pump for Refrigeration Units

Product Name: LB Series Gear Pump for Refrigeration Units

Product Overview:The LB Series Gear Pump is a specialized positive displacement pump meticulously engineered for the refrigeration industry. It is designed to handle the unique challenges of transferring refrigeration lubricants, including N32 and N46 oils used in ammonia and fluorine-based refrigeration systems. With its superior sealing technology and advanced hydraulic design, the LB series ensures leak-free operation and reliable performance, making it the ideal choice for large-scale refrigeration compressors and industrial cooling systems.

Key Features & Structural Advantages:

• Advanced Gear Technology: The pump features a cutting-edge double-arc sine curve gear profile. Unlike traditional involute gears, this design eliminates relative sliding between the gear tooth surfaces during meshing. This results in zero wear on the tooth profiles, exceptionally smooth operation, no liquid trapping phenomena, low noise, and significantly extended service life.

• Superior Leak-Proof Sealing: Specifically designed to handle media containing ammonia or fluorine, which are highly prone to leakage, the LB pump is equipped with high-performance mechanical seals (with packing seals available as an option). This ensures a completely reliable and leak-free operation, meeting the strict safety and environmental standards of the refrigeration industry.

• Built-in Overload Protection: The pump comes standard with a differential pressure safety valve, providing robust protection against overloads. The valve is set to a full reflux pressure of 1.5 times the rated discharge pressure and can be adjusted within allowable limits to safeguard the pump and pipeline system from unexpected pressure surges.

• Excellent Self-Priming & High Efficiency: The LB series boasts strong self-priming capabilities, simplifying startup procedures. Its optimized internal design ensures high volumetric efficiency and stable pressure output, guaranteeing a consistent supply of lubricating oil to critical refrigeration equipment.

• Versatile Material & Configuration: Constructed with high-strength, wear-resistant, and corrosion-resistant tool steel gears, the pump is built for durability. It is available in various configurations, including standard and insulated models (for media that requires temperature maintenance), to meet diverse operational requirements.

Technical Specifications:

• Flow Rate: 1.8 - 40 m³/h (30 - 667 L/min)

• Working Pressure: Rated differential pressure of 0.5 MPa; Maximum discharge pressure of 2.5 MPa

• Temperature Limit: Suitable for media temperatures ranging from 10℃ to 80℃ (can handle up to 120℃ depending on specific configurations)

• Viscosity Range: 5 - 1500 cSt (mm²/s)

• Media Compatibility: Ideal for ammonia and fluorine refrigeration lubricants (N32, N46), mechanical oils, turbine oils, and other non-corrosive liquids free of solid particles and fibers.

Typical Applications:

• Refrigeration Systems: Serves as the dedicated lubricating oil pump for large industrial ammonia and fluorine refrigeration compressors (such as KA series compressors), ensuring stable equipment lubrication and seamless operation.

• Oil Transmission & Boosting: Functions as a reliable transfer or booster pump for various lubricating oils in industrial pipeline systems.

• Fuel Supply Systems: Can be utilized for the transfer, pressurization, and injection of fuel oil in industrial burner and engine systems.

• General Industrial Lubrication: Widely applicable as a central lubrication pump for heavy-duty mechanical equipment across various manufacturing sectors.