Roquet iron cast gear pump 1PNA96D15T fault diagnosis and treatment methods
1. Overview. ROQUET Iron Cast Gear Pump 1PNA96D15T is a gear pump widely used in industrial fields, with the advantages of high efficiency, high pressure and long life. However, due to the complexity of its operating principle and use environment, this gear pump may suffer from various failures. This article will diagnose the common faults of Roquet iron cast gear pump 1PNA96D15T, and propose corresponding treatment methods to help users better maintain and use the equipment.
2. Common faults and solutions.
1.The pump does not start properly.
Cause of failure: power supply is not connected, motor failure, circuit failure, etc.
Solution: Check whether the power supply is turned on, check whether the motor is working normally, and check whether the circuit is normal. If there is a problem, please repair or replace the relevant parts in time.
2.Insufficient or no traffic.
Cause of failure: inlet pipe blockage, outlet pipe blockage, filter blockage, gear wear, etc.
Solution: Check whether the inlet and outlet pipes are unblocked, clean or replace the filter, check the gear wear, and replace the gear if necessary.
3.Pressure fluctuations or insufficient pressure.
Cause of failure: leakage inside the pump, damage to the sealing ring, improper adjustment of the safety valve, etc.
Solution: Check whether the internal sealing ring of the pump is intact, and replace the sealing ring if damaged. Check that the safety valve is properly adjusted and readjust the safety valve if there is a problem.
4.Excessive noise or vibration.
Cause of failure: loose internal parts of the pump, poor pipe support, gas in the fluid, etc.
Solution: Check whether the internal parts of the pump are tightened, and if there is any looseness, tighten it. Check that the pipe supports are secure and reinforce them if necessary. An exhaust valve is added at the inlet to remove the gas from the fluid.
5.The temperature is too high or the temperature rise is abnormal.
Cause of failure: insufficient or improper lubricating oil, bearing damage, poor heat dissipation, etc.
Solution: Check whether the lubricating oil is sufficient and suitable, and if there is a problem, add or replace the lubricating oil in time. Check that the bearings are working properly and replace them if damaged. Clean the dirt on the surface of the radiator and keep the radiator well dissipated.
6.Electrical faults.
Cause of failure: motor failure, control line failure, etc.
Solution: Check whether the motor is working normally, if there is a problem, repair or replace the motor. Check whether the control circuit is normal, and if there is any problem, repair or replace the relevant circuit.
7.Leakage of mechanical seals.
Cause of failure: aging of sealing ring, wear of sealing surface, etc.
Solution: Check whether the sealing ring is aging, and replace the sealing ring in time if there is a problem. Check whether the sealing surface is severely worn, and if there is a problem, repair or replace the sealing surface.
8.The pump shaft is too powerful.
Cause of failure: excessive flow, excessive pressure, mechanical failure, etc.
Solution: Check whether the flow rate and pressure are within the normal range, and adjust if there is a problem. Check the pump for mechanical faults inside and fix them if so.
9.The bearing life is too short.
Causes of failure: bearing quality problems, poor lubrication, overload, etc.
Treatment method: select high-quality bearings to ensure good lubrication of bearings and avoid overload operation. Replace the bearings regularly if necessary.
10.The pump does not shut down properly.
Cause of failure: control line failure, damage to the stop button, etc.
Solution: Check whether the control circuit is normal, and fix it if there is any problem. Check whether the stop button is damaged, and replace the button in time if there is a problem.
11.The gears are badly worn.
Cause of failure: gear material problem, poor lubrication, overload, etc.
Treatment: Select appropriate gear materials to ensure good lubrication of gears and avoid overload operation. Replace gears regularly if needed. At the same time, pay attention to the installation accuracy and balance of the gear to prevent the occurrence of eccentric wear.
12.Pump efficiency decreases.
Causes of failure: increased mechanical loss, decreased volumetric efficiency, etc.
Solution: Check whether the mechanical loss of the pump increases, if the friction loss increases, the friction parts should be repaired or replaced in timeCheck whether the volumetric efficiency of the pump is decreasing, and repair the seal or replace the leakage in time if it is caused by leakage. At the same time, pay attention to regular maintenance and maintenance of the pump to maintain its efficient operation.
13.Abnormal vibration and noise.
Causes of failure: cavitation, rotor imbalance, bearing or coupling misalignment, mechanical loosening, etc.
Treatment method: Cavitation test on the pump and find out the cavitation section and take corresponding measures to reduce cavitation noise;The dynamic balancing experiment of the rotor was carried out and the balance correction was made to eliminate the noise caused by the imbalanceCheck the mounting accuracy of the bearings and couplings and make adjustments;Measures such as fastening loose parts and eliminating basic vibration to reduce abnormal vibration and noise. At the same time, pay attention to regular maintenance and maintenance of the equipment to prevent the occurrence of such problems.
Roquet iron cast gear pump 1PNA96D15T fault diagnosis and treatment methods