How to Avoid Noise in High-Pressure Plunger Pumps?

Noise in high-pressure plunger pumps usually occurs due to certain abnormalities in the system. As a manufacturer of high-quality hydraulic components, Jiangsu Knl Hydraulic Pump focuses on reducing noise and improving stability in the design of its high-pressure plunger pumps. To avoid noise in high-pressure plunger pumps during operation, here are some key preventive measures:

1. Ensure Hydraulic Oil Quality and Cleanliness

The quality of hydraulic oil directly affects the smooth operation of the pump. Contaminated oil, the deposition of impurities, or substandard oil quality can all lead to noise issues. Jiangsu Knl Hydraulic Pump recommends regularly checking and replacing hydraulic oil to ensure it is clean and has the correct viscosity.

• Oil Contamination Check: Regularly inspect the oil for impurities and use appropriate oil filters.

• Replacement Cycle: Replace the hydraulic oil every 6 months based on usage, ensuring the oil is not contaminated.

2. Remove Air Bubbles from the System

Air entering the hydraulic system can also cause noise in the high-pressure plunger pump. Air in the hydraulic oil affects the normal operation of the pump, increasing internal pressure fluctuations and noise. Jiangsu Knl Hydraulic Pump recommends ensuring that the hydraulic system is fully vented to avoid air ingress.

• System Venting: Make sure to install appropriate venting devices and regularly expel air from the system.

• Seal Inspection: Regularly check oil lines, joints, and pipes for leaks to prevent air from entering.

3. Ensure Proper Lubrication of Pump Components

Insufficient lubrication leads to increased friction within the high-pressure plunger pump, resulting in noise. Jiangsu Knl Hydraulic Pump recommends regularly inspecting the lubrication system to ensure that all moving parts of the pump are adequately lubricated and that standard lubrication oil is used.

• Lubrication Check: Ensure that all moving parts (such as plungers, gears, etc.) are properly lubricated.

• Lubrication Oil Replacement: Regularly replace the lubrication oil based on the equipment's usage to prevent noise caused by inadequate lubrication.

4. Check Pump Alignment and Installation

Improper installation or misalignment between the pump and drive unit can cause unnecessary noise. Jiangsu Knl Hydraulic Pump advises following strict alignment standards during installation to ensure all components are properly aligned.

• Alignment Check: When installing the pump, ensure it is properly aligned with the drive unit and coupling to avoid uneven vibrations.

• Secure Installation: Ensure the pump is securely fixed to avoid noise caused by looseness.

5. Control the Pump’s Operating Pressure

Operating the pump at high pressure for extended periods can lead to overloads and vibrations, which in turn generate noise. Jiangsu Knl Hydraulic Pump recommends users strictly adhere to the rated working pressure of the hydraulic pump and avoid overloading.

• Operating Pressure Control: Avoid running the pump at excessively high pressures, monitor system pressure, and adjust the working conditions as needed.

• Minimize Pressure Fluctuations: Ensure the hydraulic system’s pressure fluctuations are minimized to reduce noise sources.

6. Regularly Check Pump Bearings and Seals

If the bearings or seals in the pump are worn or damaged, they can generate friction and vibrations, leading to noise. Jiangsu Knl Hydraulic Pump recommends regularly inspecting the bearings and seals and replacing them as necessary.

• Bearing Inspection: Regularly check the wear condition of the bearings to avoid noise caused by excessive wear.

• Seal Replacement: Inspect seals for aging or damage to ensure proper operation and reduce friction noise.

7. Use High-Quality Noise Suppression Accessories

Jiangsu Knl Hydraulic Pump recommends users install noise suppression accessories, such as soundproof covers or shock absorbers, to further reduce noise during pump operation.

• Noise Suppression: Install appropriate shock-absorbing devices and soundproof covers to reduce noise propagation during pump operation.

• Regular Maintenance: Ensure all noise suppression devices are in good working condition and prevent them from losing effectiveness due to damage.