Cause Analysis and Elimination of Common Malfunction of High Pressure Gear Pump

[Pump news Asia] high-pressure gear pump failure are not the main oil or insufficient oil and pressure mention is not high, serious noise and pressure fluctuations, hydraulic pump rotation is not flexible or killed, the following for high pressure gear pump three A common failure phenomenon to analyze the reasons and their exclusion method! Symptoms: do not fight oil or lack of oil and the pressure is not raised Cause: 1. Motor steering error 2. Suction pipe or filter plugging 3. Axial or radial clearance is too large 4. The connection Leakage caused by air mixed 5. Oil viscosity too high or oil temperature rise too high Remedy: 1. Correct the motor steering 2. To clear the pipeline, cleaning the filter to remove the clogged objects, replace the new oil 3. Repair replacement parts 4 . Tighten the screws at the connection to avoid leakage prevent air mixed 5. Oil should be selected according to temperature changes Fault phenomenon: severe noise and pressure fluctuations caused by: 1. The suction pipe and the oil filter partially blocked or inlet filter Small capacity 2. Suction from the suction tube or shaft seal air or air bubbles in the oil 3. Pump and coupling is not the heart or abrasion 4. Gear itself is not high accuracy 5.CB gear pump skeleton oil seal Damaged or loaded shaft when the skeleton oil seal spring off Exclusion: 1. Removal of dirt, so that the suction pipe unimpeded or switch to the appropriate capacity of the oil filter 2. At the connection site or seal add oil, if noise is reduced, can be tightened Connector or replace the seal, back to the oil The mouth should be below the oil surface, and the suction pipe to be a certain distance 3. Concentric adjustment to eliminate abrasions 4. Replace the gear or grinding 5. Check the skeleton seal, damaged to avoid inhalation of air failure phenomenon: hydraulic pump rotation is not Flexible or bite death causes: 1. Axial clearance and radial clearance is too small 2. Bad assembly, CB-type cover, and the shaft concentricity is not good, the long axis of the spring to tighten the legs too long, needle sleeve quality Poor 3. Pump and motor coupling is not coaxial 4. Impurities in the fluid is sucked Pump body Elimination methods: 1. Repair parts 2. Re-assembly according to the requirements 3. Adjust to make different axis Not more than 0.2mm 4 to prevent the surrounding sand, iron filings and cooling water and other objects into the tank Above is a common fault on high pressure gear pump: do not hit the oil or insufficient oil pressure and pressure is not high, severe noise and pressure fluctuations , Hydraulic pump rotation is not flexible or bite death of the three common causes of the phenomenon of failure and its exclusion, I hope for your help! Further reading: IFAT China Guangzhou exhibition industry leaders building water pump manufacturers ranking article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: lindj (QQ / WeChat:) Starting: http://beng.liuti.cn/ (Service Hotline:)

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