Hydraulic Pump Adjustment Techniques: Professional Guide to Precise Flow & Pressure Control | Guangdong Haozheng Hydraulic Equipment Co., Ltd.

In hydraulic system operations, the hydraulic pump serves as the core power component, where precise control of flow and pressure directly impacts system performance and equipment efficiency. As a professional manufacturer in hydraulic technology, Guangdong Haozheng Hydraulic Equipment Co., Ltd. presents this detailed guide to plunger pump adjustment techniques for optimal system control.

Core Adjustment Technology for Plunger Pumps: Precise Eccentricity Control

1. Eccentricity Adjustment Principle

Technical Highlights:

• Adjusting the stator eccentricity of plunger pumps precisely controls plunger stroke length

• Every 1mm increase in eccentricity boosts pump displacement by 15-20% (varies by model)

• Guangdong Haozheng's smart variable plunger pumps feature patented eccentric adjustment mechanisms with ±0.05mm precision

2. Critical Adjustment Considerations

Professional Recommendations:

• Maximum eccentricity shouldn't exceed 90% of design value to avoid excessive lateral forces

• Conduct minimum 30-minute no-load test after adjustment, monitoring vibration and noise changes

• Check pump temperature after every 0.5mm adjustment (normal ≤75℃)

Four Comprehensive Flow/Pressure Adjustment Methods

Method 1: Stator Eccentricity Adjustment (for Variable Plunger Pumps)

Operation Steps:

1. Shut down and depressurize system

2. Loosen adjustment mechanism lock nut

3. Rotate adjustment screw (clockwise decreases, counterclockwise increases eccentricity)

4. Measure changes with dial indicator

5. Tighten nut and restart for testing

Advantage: Enables stepless adjustment with fast response (Haozheng HP series completes adjustment within 2 seconds)

Method 2: Hydraulic Fluid Viscosity Optimization

Technical Parameters:

Viscosity GradeTemp. RangeFlow ImpactISO VG 320-40℃+10%ISO VG 4610-60℃BaselineISO VG 6830-80℃-15%

Recommendation: Consult Guangdong Haozheng technical team for customized fluid solutions

Method 3: Speed Regulation (Requires VFD)

Calculation Formula:

Q = n × V × ηv / 1000

Where:

• Q: Actual flow (L/min)

• n: Speed (rpm)

• V: Displacement (ml/rev)

• ηv: Volumetric efficiency (%)

Note: Maintain speed above 30% of rated value to ensure proper lubrication

Method 4: Displacement Change (For Multi-displacement Pumps)

Guangdong Haozheng offers various options:

• Small displacement: 10-50ml/rev

• Medium displacement: 55-100ml/rev

• Large displacement: 110-250ml/rev

Professional Maintenance & Adjustment Advice

1. Regular Testing: Monthly volumetric efficiency checks using Haozheng specialized equipment (should ≥92%)

2. Adjustment Records: Maintain detailed logs of all parameter changes

3. Preventive Maintenance: Replace servo mechanism grease every 2,000 hours

4. Expert Support: Contact Guangdong Haozheng technical team for complex adjustments (remote guidance available)

Through scientific adjustment and maintenance, your plunger pump can maintain peak performance while extending service life by over 30%. For detailed technical parameters or on-site service, please contact our experts.

(Technical content provided by Guangdong Haozheng Hydraulic Equipment Co., Ltd. Hydraulic Research Institute. Please credit source when reposting. For specific operations, refer to equipment manuals or consult professional technicians.)