Copper Gear Lubricating Oil Pump

I. Product Positioning and Core Functions

Copper gear lubricating oil pumps are precision fluid transportation equipment designed for industrial lubrication systems, hydraulic drives, fuel transportation, and other scenarios. Using copper alloy gears and pump bodies, they achieve efficient and stable transmission of lubricating oil through the gear meshing principle. Their core functions include:

High-Reliability Transmission: Closed gear design (volumetric efficiency ≥90%) and self-priming performance (suction lift ≤5m) ensure rapid pipeline filling during startup, avoiding cavitation issues. Suitable for continuous operation in marine, petrochemical, and construction machinery scenarios.

Media Compatibility: Adapt to mineral oils, synthetic oils, additive-containing lubricating oils (viscosity 5-1500cSt), and mildly corrosive media (pH 6-9). Tin bronze gears can withstand trace particles (≤0.1mm), while aluminum bronze materials adapt to seawater environments with Cl⁻≤20,000ppm.

Modular Design: Supports extended configurations such as variable frequency control (accuracy ±1%), explosion-proof motors (Ex d IIB T4), and heating jackets (suitable for high-temperature oil), meeting diverse working condition requirements.

II. Key Materials and Performance Parameters

III. Technical Advantages and Innovative Design

Low Noise and Long Life

Circular arc gear design (contact ratio ≥1.3) and precision dynamic balance treatment (residual unbalance ≤5g・mm), vibration value ≤2.0mm/s, noise ≤75dB, extending bearing life to 10,000 hours.

Smooth copper alloy gear surface (roughness Ra≤3.2μm), scaling rate 60% lower than cast iron, extending maintenance cycles to 12 months.

Intelligent Control and Energy Saving

Standard pressure sensor (accuracy 0.5 class) and temperature monitoring module automatically alarm and switch to standby pumps in case of abnormalities, enabling unattended operation.

Variable frequency control technology automatically adjusts flow according to load, maintaining efficiency ≥70% under variable conditions, with annual energy savings of 15%-25%.

Explosion-Proof and Safety Design

Copper gears generate no sparks during meshing. Combined with explosion-proof motors (such as ATEX certification), they can be used for transporting flammable and explosive media like gasoline and aviation kerosene

Built-in safety valve (full reflux pressure 1.5 times rated pressure) prevents overpressure damage caused by pipeline blockage or misoperation.

IV. Typical Application Scenarios

Industrial Lubrication Systems

Gearbox Lubrication: Tin bronze pumps transport gear oils with viscosity 32-460cSt, flow 10-100m³/h, head 30-50m, resisting corrosion from extreme pressure additives (such as sulfur-phosphorus compounds) in oil.

Bearing Cooling: Brass pumps drive lubricating oil through coolers to achieve precise bearing temperature control (±2℃), suitable for high-temperature oil (oil temperature ≤120℃).

Hydraulic and Fuel Systems

Hydraulic Power Supply: Aluminum bronze pumps provide 0.5-2.5MPa pressure oil, flow 20-200L/min, adapting to construction machinery hydraulic systems. Vibration-resistant design (amplitude ≤0.04mm) suits harsh conditions.

Fuel Transportation: KCB series copper gear pumps transport diesel and heavy oil, flow 1.1-600m³/h, pressure 0.28-2.5MPa, suitable for oil depots, tankers, etc.

Marine and Offshore Engineering

Main Engine Lubrication: Tin bronze pumps serve as marine main lubricating oil pumps, draining lubricating oil to diesel engine systems, resisting ship sway (tilt angle ≤15°).

Seawater Lubrication: Aluminum bronze pumps withstand seawater with Cl⁻≤20,000ppm, flow 80-150m³/h. Combined with cathodic protection systems, service life is doubled compared to cast iron pumps.

Food and Pharmaceutical Industries

Edible Oil Transportation: YCB series stainless steel or copper gear pumps (FDA certified) transport soybean oil and corn oil, flow 5-50m³/h, pressure 0.3-1.0MPa, with mirror-polished surfaces (Ra≤0.8μm) to prevent oil residue.

Pharmaceutical-Grade Lubrication: Precision copper gear pumps (sanitary design) for pharmaceutical equipment, flow 0.1-10L/min, pressure 0.2-0.6MPa, resistant to CIP/SIP cleaning (135℃, 30 minutes).

V. Selection and Maintenance Key Points

Key Selection Parameters

Media Characteristics: Choose tin bronze for particulate media, aluminum bronze for high-pressure/corrosive media, and brass for conventional scenarios.

Working Condition Matching: Heating jackets for high temperatures (>80℃), aluminum bronze + explosion-proof motors for explosion-proof areas, and electric tracing for low temperatures (<-20℃).

Maintenance Specifications

Daily Monitoring: Record inlet/outlet pressure and bearing temperature (temperature rise ≤35℃) daily; check vibration values (threshold ≤2.5mm/s) weekly.

Regular Maintenance: Clean Y-type filters (filtration accuracy ≤5mm) quarterly; remove oil sludge with special oil cleaners annually; replace mechanical seals when leakage >10 drops/minute.

Compliance Requirements

Industrial pumps must comply with GB/T 13007 Technical Conditions for Gear Pumps; explosion-proof scenarios need ATEX or UL certification; marine pumps require DNV GL or CCS classification society certification.

Food-grade applications need FDA certification; pharmaceutical-grade applications require ISO 10993 biocompatibility testing.

VI. Industry Trends and Technological Innovations

1. Intelligent Upgrades: 

IoT-based monitoring systems (such as PLC + industrial gateways) can collect real-time parameters like flow, pressure, and vibration for remote diagnosis and predictive maintenance, reducing fault response time to within 5 minutes.

2. Green Energy-Saving Design:

New patents (such as CN222228884U) optimize gear clearances to increase volumetric efficiency to 92% and reduce energy consumption by 12%, complying with EU ErP energy efficiency directives.

3. Material and Process Breakthroughs: 

Nanocrystalline copper-based composite materials (friction coefficient ≤0.08) are in pilot production, extending service life by 30% compared to traditional materials, suitable for high-temperature (≤150℃) or high-speed (>3000rpm) conditions.