搜索历史清除全部记录
- All
- Product Management
- News
- Introduction
- Enterprise outlets
- FAQ
- Enterprise Video
- Enterprise Atlas
Possible Causes of Abnormal Pressure Fluctuations in the Wet Spray Machine's Hydraulic System
Release time:
2025-10-25
Source:
Author:
Summary:
The hydraulic system is the core power source of the wet spray machine, and its pressure stability directly affects both spraying quality and equipment reliability. When pressure fluctuations occur in the system, they can lead to issues such as uneven spraying and increased equipment vibration. This article will systematically analyze the common causes of abnormal pressure fluctuations, along with corresponding solutions.
I. Issues related to hydraulic oil (accounting for approximately 35%)
1. Fluid Contamination
Performance: Irregular jittering of the pressure gauge pointer
Reason: Metal particles or impurities in the fluid clog the control valve.
Solution: Replace the hydraulic oil and flush the system; inspect the filter.
2. Fluid degradation
Performance: Pressure fluctuations accompanied by rising oil temperature
Reason: Oil oxidation causes viscosity changes.
Solution: Check the oil quality and replace it if necessary.
3. Abnormal Oil Level
Performance: Pressure decreases cyclically
Reason: Insufficient fuel in the tank caused the pump to run dry.
Solution: Top up the fluid to the standard level.
II. Hydraulic Pump Failure (accounting for approximately 25%)
1. Pump body wear
Performance: Pressure continues to decline steadily
Reason: Piston or gear wear causes internal leakage.
Solution: Check the pump's volumetric efficiency and replace it if necessary.
2. Intake Issues
Performance: Intense pressure fluctuations accompanied by unusual noises
Reason: Poor sealing of the oil suction line
Solution: Inspect and tighten all connection points.
III. Control Valve Failure (accounting for approximately 20%)
1. Valve core sticking
Performance: Sudden changes in pressure
Reason: Contaminants are causing the valve core to move obstructively.
Solution: Disassemble, clean, or replace the valve core.
2. Pressure regulator failure
Performance: Pressure fails to stabilize at the set value
Reason: Voltage regulator spring fatigue or valve seat wear
Solution: Replace the pressure regulator assembly
IV. Actuator Issues (accounting for approximately 15%)
1. Internal leakage in the oil cylinder
Performance: Pressure continues to drop during holding pressure.
Reason: Seal damaged
Solution: Replace the sealing component
2. Motor failure
Performance: Noticeable pressure fluctuations under load
Reason: Flow distribution plate wear
Solution: Inspect or replace the motor
V. Other Reasons (accounting for about 5%)
1. System Design Flaw
Performance: Pressure instability under specific operating conditions
Solution: Install an accumulator or adjust the piping.
2. Temperature Influence
Performance: Noticeable fluctuations occur during cold starts.
Solution: Install an oil temperature control system
Fault diagnosis process recommendations:
1. Observe the fluctuation characteristics of the pressure gauge
2. Check the oil quality and level
3. Test the pump's outlet pressure
4. Check the control valves one by one
5. Check the sealing performance of the actuator components
Preventive Maintenance Recommendations:
1. Regularly change the hydraulic oil (recommended every 2000 hours)
2. Keep the filter clean
3. Regularly inspect pipeline sealing integrity
4. Establish a Pressure Monitoring Record
5. Avoid operating under overload conditions
RELATED INFORMATION
Contact Us
Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
0
Consult now
WeChat Public Number
TikTok