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Dongguan Punok Vacuum Technology Co., Ltd
Fault analysis and solution of Roots vacuum unit
NegotiableUpdate on 05/14
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Overview
Fault analysis and solution for Roots vacuum unit: Low ultimate pressure of $r $n $r $n pipeline and system leakage - System leak detection $r $n Pump partial leakage - Leak detection of pump $r $n Pre stage pump limit pressure drops - Repair or replace pre stage pump $r $n Lubricating oil is too dirty or does not match the brand - Replace lubricating oil $r $n Oil seal wear - Replace oil seal $r $n Bypass valve leakage - Clean bypass valve $r $n $r $n Insufficient pumping speed $r $n Pipeline conductivity is insufficient - Increase pipeline conductivity $r $n Pre stage pump pumping speed drops - Repair or replace pre stage pump $r $n Bypass valve leakage Clean the bypass valve
Product Details
Dongguan Punok Vacuum Technology Co., Ltd. is a domestic manufacturer of vacuum units, specializing in the design and manufacture of various vacuum units, including vacuum pump units, rotary vane vacuum units, Roots vacuum units, and vacuum systems.
The Roots rotary vane vacuum unit is mainly driven by Roots pumpsIt is connected in series with a single-stage or two-stage rotary vane pump as the front stage pump. Retain the advantages of rapid operation and high pumping rate of Roots pumps. So this unit is widely used in the chemical industry for vacuum distillation, vacuum evaporation, dehydration crystallization; In the processes of freeze-drying in the food industry and vacuum drying in the pharmaceutical industry.
Fault analysis and solution of Roots vacuum unit：
The maximum pressure is not high
Pipeline and system leakage——System leak detection
Pump leakage——Perform leak detection on the pump
The maximum pressure of the front-end pump decreases——Repair or replace the front stage pump
Lubricating oil is too dirty or the brand does not match——Replace lubricating oil
Oil seal wear——Replace the oil seal
Leakage at the bypass valve——Clean the bypass valve
Insufficient pumping speed
Insufficient pipeline conductivity——Increase pipeline conductivity
The pumping speed of the front stage pump decreases——Repair or replace the front stage pump
Leakage at the bypass valve——Clean the bypass valve
motor overload
Excessive inlet pressure——Adjust and control the inlet pressure
The rotor end face is in contact with one side of the end face——Adjust the clearance between the rotor end faces
Pre stage pump returns oil to the pump chamber——Install anti backflow oil device
The bypass valve is blocked, causing the outlet pressure to be too high——Clean the bypass valve
overheating
The selected front-end pump has insufficient pumping speed, resulting in excessive compression ratio——Re select the front-end pump
Excessive inlet pressure——Adjust and control the inlet pressure
Poor cooling——Smooth cooling water flow
Excessive lubricating oil in the gearbox——Adjust the fuel quantity
Contact between rotor and pump casing——Repair and maintenance
Poor lubrication of gears, bearings, and oil seals——Ensure appropriate oil level and good lubrication
abnormal sound
poor assembly——Reinstall
Export gear and rotor position offset causing rotor to collide——Adjust position and ensure clearance
Excessive inlet pressure——Adjust and control the inlet pressure
Damage to gears caused by overload or poor lubrication——Replace the gear
bearing wear——Replace bearings
Severe early wear of bearings and gears
Poor lubricating oil——Replace lubricating oil
Insufficient lubrication——Supplement lubricating oil
Fault analysis and solution of Roots vacuum unit
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