The self-priming centrifugal oil pump is suitable for oil industry, land oil storage tank and oil tank truck, and is suitable for marine cargo oil pump, bilge pump and ballast pump and machine cooling water circulation, etc., respectively conveying gasoline, kerosene, diesel and aviation. Coal and other petroleum products and seawater, clean water, medium temperature -20 ° C ~ 80 ° C, such as transport chemical liquid can be changed to corrosion-resistant mechanical seal. In the normal use process, we often encounter failures, then how can we solve it?
Now we share with the users the common faults and treatment methods of CYZ self-priming centrifugal oil pump:
The reasons for the failure of A.CYZ self-priming centrifugal oil pump to start or start the load and the treatment methods are as follows:
(1) The prime mover or power supply is abnormal. The solution is to check the power and prime mover conditions.
(2) CYZ self-priming centrifugal oil pump stuck. The treatment method is to check the coupling by hand, and disassemble if necessary to eliminate the malfunction of the static and dynamic parts.
(3) (The packing is pressed too tightly. The treatment is to loosen the packing.
(4) The discharge valve is not closed. The treatment is to close the discharge valve and restart.
(5) The balance tube is not smooth. The treatment method is to clear the balance tube.
The reasons for the non-discharge of B.CYZ self-priming centrifugal oil pump and the treatment methods are as follows:
(1) The CYZ self-priming centrifugal oil pump is insufficient (or the gas in the CYZ self-priming centrifugal oil pump is not exhausted). The treatment method is to refill the CYZ self-priming centrifugal oil pump.
(2) CYZ self-priming centrifugal oil pump does not turn right. The method of processing is to check the direction of rotation.
(3) The speed of the CYZ self-priming centrifugal oil pump is too low. The treatment method is to check the rotation speed and increase the rotation speed.
(4) The filter screen is clogged and the bottom valve is not working. The treatment method is to check the filter to eliminate debris.
(5) The suction height is too high, or a vacuum appears in the aspiration tank. The treatment method is to reduce the suction height; check the suction tank pressure.
The reasons for the interruption of the C.CYZ self-priming centrifugal oil pump after draining and the treatment methods are as follows:
(1) Air leakage from the suction line. The treatment method is to check the connection of the suction side pipe and the sealing of the stuffing box.
(2) When the CYZ self-priming centrifugal oil pump is filled, the suction side gas is not exhausted. The treatment method is to refill the CYZ self-priming centrifugal oil pump.
(3) The suction side is suddenly blocked by foreign matter. The treatment method is to stop the foreign matter by stopping the CYZ self-priming centrifugal oil pump.
(4) Inhale a large amount of gas. The treatment method is to check whether the suction port has a vortex and whether the submerged depth is too shallow.
D. The reasons for the lack of traffic and the treatment methods are as follows:
(1) Same as B, C. The solution is to take appropriate measures.
(2) The system has a static head increase. The method of treatment is to check the liquid level and system pressure.
(3) Increase in resistance loss. The treatment method is to check the pipeline and the check valve and other obstacles.
(4) The wear ring of the housing and the impeller is excessively worn. The treatment is to replace or repair the wear ring and the impeller.
(5) Leakage in other parts. The treatment method is to check the shaft seal and the like.
(6) The CYZ self-priming centrifugal oil pump impeller is blocked, worn and corroded. The treatment method is cleaning, inspection and exchange.
E. The reasons for the insufficient head and the treatment methods are as follows:
(1) (1), (2), (3), (4), C (1), and D (6) of B. The solution is to take appropriate measures.
(2) Impeller mounted reverse (double suction wheel). The treatment is to check the impeller.
(3) The liquid density and viscosity do not match the design conditions. The treatment is to check the physical properties of the liquid.
(4) The flow rate is too large during operation. The solution is to reduce the flow.
F. The reason for the large power consumption during operation and the processing method are as follows:
(1) The impeller and the wear ring, the impeller and the shell are honed. The treatment is to check and repair.
(2) Same as item (4) of E. The solution is to reduce the flow.
(3) The liquid density increases. The treatment is to check the liquid density.
(4) The packing is pressed too tightly or dryly. The treatment is to loosen the packing and check the water seal tube.
(5) Bearing damage. The method of handling is to check for repair or replacement of the bearing.
(6) The speed is too high. The solution is to check the driver and power supply.
(7) CYZ self-priming centrifugal oil pump shaft bending. The treatment is to correct the pump shaft.
(8) The axial force balance device failed. The treatment method is to check the balance hole and whether the return pipe is blocked.
(9) The coupling is poorly aligned or the axial clearance is too small. The method of treatment is to check the alignment and adjust the axial clearance.
The causes and treatment methods of vibration or abnormal sound of G.CYZ self-priming centrifugal oil pump are as follows:
(1) Same as C (4), F (5), (7), (9). The solution is to take appropriate measures.
(2) The vibration frequency is 0~40% working speed. Excessive bearing clearance, loose bearing bush, impurities in oil, poor oil quality (viscosity, temperature), oil foaming due to air or process liquid, poor lubrication, bearing damage. The treatment method is to take corresponding measures, such as adjusting the bearing clearance, removing impurities in the oil, and replacing the new oil.
(3) The vibration frequency is 60%~100% working speed. The bearing problem is the same as 5
(2), or the sealing gap is too large, the retaining ring is loose, and the seal is worn. The treatment is to check, adjust or replace the seal.
(4) The vibration frequency is 2 times the working speed. Misalignment, loose coupling, friction of sealing device, deformation of housing, bearing damage, bearing resonance, damage to thrust bearing, shaft bending, poor fit. The treatment method is to check and take corresponding measures to repair, adjust or replace (5) the vibration frequency is n times the working speed. Pressure pulsation, no center, shell deformation, seal friction, bearing or foundation resonance, pipeline, machine resonance, treatment method is the same (4), reinforcement foundation or pipeline.
(6) The vibration frequency is very high. Shaft friction, seals, bearings, imprecision, bearing shake, poor shrink fit, etc. The treatment method is the same as (4).
H. Bearing heating causes and treatment methods are as follows:
(1) Bearing tile scraping is not satisfactory. The method of disposal is to repair the bearing pads or replace them.
(2) The bearing clearance is too small. The treatment is to re-adjust the bearing clearance or scrape.
(3) The amount of lubricating oil is insufficient and the oil quality is poor. The treatment is to increase the amount of oil or to change the oil.
(4) Poor bearing assembly. The treatment method is to check the bearing assembly condition as required and eliminate the unqualified factors.
(5) Cooling water is broken. The treatment method is inspection and repair.
(6) The bearing is worn or loose. The treatment is to repair the bearings or scrap. If the pine association, re-tighten the bolts.
(7) The pump shaft is bent. The treatment is to correct the pump shaft.
(8) The oil ring is deformed, the oil ring cannot be rotated, and the oil is not oiled. The treatment method is to update the oil ring.
(9) The coupling is poorly aligned or the axial clearance is too small. The method of treatment is to check the alignment and adjust the axial clearance.
I. Reasons for the heating of the shaft seal and the treatment methods are as follows:
(1) The packing is pressed too tightly or rubbed. The treatment is to loosen the packing and check the water seal tube.
(2) The water seal ring and the water seal tube are misplaced. The method of processing is to recheck the alignment.
(3) Flushing and cooling are good. The treatment method is to check the flushing cooling circulation pipe.
(4) The mechanical seal is faulty. The treatment is to check the mechanical seal.
J. The main cause of rotor turbulence and its treatment are as follows:
(1) Improper operation, operating conditions away from the design conditions of CYZ self-priming centrifugal oil pump. Treatment method: Strict operation, so that the CYZ self-priming centrifugal oil pump always runs near the design working condition.
(2) The balance is not smooth. The treatment method is to clear the balance tube.
(3) The balance plate and the balance plate are not suitable. The treatment method is to replace the balance plate and the balance plate with the material that meets the requirements.
K. The cause of water hammer and its treatment are as follows:
(1) Due to the sudden power failure, the system pressure fluctuates, and the negative pressure of the discharge system occurs. The bubbles dissolved in the liquid escape and the gas exists in the CYZ self-priming centrifugal oil pump or pipeline. The treatment is to drain the gas.
(2) The high-pressure liquid column is rapidly poured back due to sudden power failure, and the impact is on the check valve plate of the CYZ self-priming centrifugal oil pump outlet. The treatment method is to modify the arrangement of pipelines and pipeline accessories for the unreasonable discharge system of CYZ self-priming centrifugal oil pump.
(3) The valve of the outlet pipe is closed too fast. The treatment is to slowly close the valve.
The article is from Shanghai Equan Pump Co., Ltd. original production, please indicate!
Now we share with the users the common faults and treatment methods of CYZ self-priming centrifugal oil pump:
The reasons for the failure of A.CYZ self-priming centrifugal oil pump to start or start the load and the treatment methods are as follows:
(1) The prime mover or power supply is abnormal. The solution is to check the power and prime mover conditions.
(2) CYZ self-priming centrifugal oil pump stuck. The treatment method is to check the coupling by hand, and disassemble if necessary to eliminate the malfunction of the static and dynamic parts.
(3) (The packing is pressed too tightly. The treatment is to loosen the packing.
(4) The discharge valve is not closed. The treatment is to close the discharge valve and restart.
(5) The balance tube is not smooth. The treatment method is to clear the balance tube.
The reasons for the non-discharge of B.CYZ self-priming centrifugal oil pump and the treatment methods are as follows:
(1) The CYZ self-priming centrifugal oil pump is insufficient (or the gas in the CYZ self-priming centrifugal oil pump is not exhausted). The treatment method is to refill the CYZ self-priming centrifugal oil pump.
(2) CYZ self-priming centrifugal oil pump does not turn right. The method of processing is to check the direction of rotation.
(3) The speed of the CYZ self-priming centrifugal oil pump is too low. The treatment method is to check the rotation speed and increase the rotation speed.
(4) The filter screen is clogged and the bottom valve is not working. The treatment method is to check the filter to eliminate debris.
(5) The suction height is too high, or a vacuum appears in the aspiration tank. The treatment method is to reduce the suction height; check the suction tank pressure.
The reasons for the interruption of the C.CYZ self-priming centrifugal oil pump after draining and the treatment methods are as follows:
(1) Air leakage from the suction line. The treatment method is to check the connection of the suction side pipe and the sealing of the stuffing box.
(2) When the CYZ self-priming centrifugal oil pump is filled, the suction side gas is not exhausted. The treatment method is to refill the CYZ self-priming centrifugal oil pump.
(3) The suction side is suddenly blocked by foreign matter. The treatment method is to stop the foreign matter by stopping the CYZ self-priming centrifugal oil pump.
(4) Inhale a large amount of gas. The treatment method is to check whether the suction port has a vortex and whether the submerged depth is too shallow.
D. The reasons for the lack of traffic and the treatment methods are as follows:
(1) Same as B, C. The solution is to take appropriate measures.
(2) The system has a static head increase. The method of treatment is to check the liquid level and system pressure.
(3) Increase in resistance loss. The treatment method is to check the pipeline and the check valve and other obstacles.
(4) The wear ring of the housing and the impeller is excessively worn. The treatment is to replace or repair the wear ring and the impeller.
(5) Leakage in other parts. The treatment method is to check the shaft seal and the like.
(6) The CYZ self-priming centrifugal oil pump impeller is blocked, worn and corroded. The treatment method is cleaning, inspection and exchange.
E. The reasons for the insufficient head and the treatment methods are as follows:
(1) (1), (2), (3), (4), C (1), and D (6) of B. The solution is to take appropriate measures.
(2) Impeller mounted reverse (double suction wheel). The treatment is to check the impeller.
(3) The liquid density and viscosity do not match the design conditions. The treatment is to check the physical properties of the liquid.
(4) The flow rate is too large during operation. The solution is to reduce the flow.
F. The reason for the large power consumption during operation and the processing method are as follows:
(1) The impeller and the wear ring, the impeller and the shell are honed. The treatment is to check and repair.
(2) Same as item (4) of E. The solution is to reduce the flow.
(3) The liquid density increases. The treatment is to check the liquid density.
(4) The packing is pressed too tightly or dryly. The treatment is to loosen the packing and check the water seal tube.
(5) Bearing damage. The method of handling is to check for repair or replacement of the bearing.
(6) The speed is too high. The solution is to check the driver and power supply.
(7) CYZ self-priming centrifugal oil pump shaft bending. The treatment is to correct the pump shaft.
(8) The axial force balance device failed. The treatment method is to check the balance hole and whether the return pipe is blocked.
(9) The coupling is poorly aligned or the axial clearance is too small. The method of treatment is to check the alignment and adjust the axial clearance.
The causes and treatment methods of vibration or abnormal sound of G.CYZ self-priming centrifugal oil pump are as follows:
(1) Same as C (4), F (5), (7), (9). The solution is to take appropriate measures.
(2) The vibration frequency is 0~40% working speed. Excessive bearing clearance, loose bearing bush, impurities in oil, poor oil quality (viscosity, temperature), oil foaming due to air or process liquid, poor lubrication, bearing damage. The treatment method is to take corresponding measures, such as adjusting the bearing clearance, removing impurities in the oil, and replacing the new oil.
(3) The vibration frequency is 60%~100% working speed. The bearing problem is the same as 5
(2), or the sealing gap is too large, the retaining ring is loose, and the seal is worn. The treatment is to check, adjust or replace the seal.
(4) The vibration frequency is 2 times the working speed. Misalignment, loose coupling, friction of sealing device, deformation of housing, bearing damage, bearing resonance, damage to thrust bearing, shaft bending, poor fit. The treatment method is to check and take corresponding measures to repair, adjust or replace (5) the vibration frequency is n times the working speed. Pressure pulsation, no center, shell deformation, seal friction, bearing or foundation resonance, pipeline, machine resonance, treatment method is the same (4), reinforcement foundation or pipeline.
(6) The vibration frequency is very high. Shaft friction, seals, bearings, imprecision, bearing shake, poor shrink fit, etc. The treatment method is the same as (4).
H. Bearing heating causes and treatment methods are as follows:
(1) Bearing tile scraping is not satisfactory. The method of disposal is to repair the bearing pads or replace them.
(2) The bearing clearance is too small. The treatment is to re-adjust the bearing clearance or scrape.
(3) The amount of lubricating oil is insufficient and the oil quality is poor. The treatment is to increase the amount of oil or to change the oil.
(4) Poor bearing assembly. The treatment method is to check the bearing assembly condition as required and eliminate the unqualified factors.
(5) Cooling water is broken. The treatment method is inspection and repair.
(6) The bearing is worn or loose. The treatment is to repair the bearings or scrap. If the pine association, re-tighten the bolts.
(7) The pump shaft is bent. The treatment is to correct the pump shaft.
(8) The oil ring is deformed, the oil ring cannot be rotated, and the oil is not oiled. The treatment method is to update the oil ring.
(9) The coupling is poorly aligned or the axial clearance is too small. The method of treatment is to check the alignment and adjust the axial clearance.
I. Reasons for the heating of the shaft seal and the treatment methods are as follows:
(1) The packing is pressed too tightly or rubbed. The treatment is to loosen the packing and check the water seal tube.
(2) The water seal ring and the water seal tube are misplaced. The method of processing is to recheck the alignment.
(3) Flushing and cooling are good. The treatment method is to check the flushing cooling circulation pipe.
(4) The mechanical seal is faulty. The treatment is to check the mechanical seal.
J. The main cause of rotor turbulence and its treatment are as follows:
(1) Improper operation, operating conditions away from the design conditions of CYZ self-priming centrifugal oil pump. Treatment method: Strict operation, so that the CYZ self-priming centrifugal oil pump always runs near the design working condition.
(2) The balance is not smooth. The treatment method is to clear the balance tube.
(3) The balance plate and the balance plate are not suitable. The treatment method is to replace the balance plate and the balance plate with the material that meets the requirements.
K. The cause of water hammer and its treatment are as follows:
(1) Due to the sudden power failure, the system pressure fluctuates, and the negative pressure of the discharge system occurs. The bubbles dissolved in the liquid escape and the gas exists in the CYZ self-priming centrifugal oil pump or pipeline. The treatment is to drain the gas.
(2) The high-pressure liquid column is rapidly poured back due to sudden power failure, and the impact is on the check valve plate of the CYZ self-priming centrifugal oil pump outlet. The treatment method is to modify the arrangement of pipelines and pipeline accessories for the unreasonable discharge system of CYZ self-priming centrifugal oil pump.
(3) The valve of the outlet pipe is closed too fast. The treatment is to slowly close the valve.
The article is from Shanghai Equan Pump Co., Ltd. original production, please indicate!
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