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Any machine will inevitably have problems, especially in daily life, a large number of water pump products are used. Once a water pump fails, the water supply may be insufficient or the water supply may be directly cut off, which will bring a lot of inconvenience to our life and work. The mechanical structure of commonly used water pumps is relatively simple and stable. In this way, it is convenient for us to carry out maintenance and troubleshoot common faults. If we learn to troubleshoot and repair water pumps by ourselves, we can reduce waiting time and restore water supply in time. Today, the water pump experts of our hrzl Manufacturing Co., Ltd. will briefly explain to you how to troubleshoot and repair water pump failures. 1. The pump is stuck. The solution is to turn the coupling by hand to check, disassemble and check if necessary, and eliminate the dynamic and static faults. 2. The pump does not discharge liquid and the pump is not fully filled (or the gas in the pump is not completely discharged). The solution is to refill the pump; The pump is not turning in the right direction. The solution is to check the direction of rotation; The pump speed is too low. The solution is to check the speed and increase the speed; The filter is blocked and the bottom valve is not working. The solution is to check the filter and remove the debris; The suction height is too high, or there is a vacuum in the suction tank. The solution is to reduce the suction height; check the pressure of the suction tank. 3. The pump is interrupted after discharging liquid. The reason and solution are that the suction pipeline leaks. The solution is to check the connection of the suction side pipeline and the sealing of the stuffing box: The gas on the suction side was not completely discharged when filling the pump. The solution is to require refilling the pump; The suction side is suddenly blocked by foreign matter. The solution is to stop the pump to deal with the foreign matter; A large amount of gas is inhaled. The solution is to check whether there is a vortex at the suction port and whether the immersion depth is too shallow. 4. Insufficient flow, reason and solution, the static head of the system increases. The solution is to check the liquid height and system pressure; The resistance loss increases. The solution is to check obstacles such as pipelines and check valves; The wear rings of the casing and impeller are too worn. The solution is to replace or repair the wear rings and impellers; Other parts leak. The solution is to check the shaft seal and other parts; The pump impeller is blocked, worn, and corroded. The treatment method is cleaning, inspection, and replacement. 5. The head is not enough, the cause and treatment method, the impeller is installed upside down (double suction impeller). The treatment method is to check the impeller; (Welcome to follow WeChat: Pump Friends Circle) The liquid density and viscosity do not meet the design conditions. The treatment method is to check the physical properties of the liquid; The flow rate is too large during operation. The treatment method is to reduce the flow rate. 6. Pump vibration or abnormal sound, cause and treatment method. The vibration frequency is 0~40% of the working speed. Excessive bearing clearance, loose bearing shells, impurities in the oil, poor oil quality (viscosity, temperature), oil foaming due to air or process liquid, poor lubrication, and bearing damage. The treatment method is to take corresponding measures after inspection, such as adjusting the bearing clearance, removing impurities in the oil, and replacing new oil; The vibration frequency is 60%-100% of the working speed, or the seal clearance is too large, the retaining ring is loose, and the seal is worn. The treatment method is to check, adjust or replace the seal; the vibration frequency is 2 times the working speed, misalignment, loose coupling, friction of the sealing device, deformation of the housing, bearing damage, support resonance, thrust bearing damage, shaft bending, poor fit. The treatment method is to check, take corresponding measures, repair, adjust or replace; the vibration frequency is n times the working speed. Pressure pulsation, misalignment, housing deformation, seal friction, support or foundation resonance, pipeline, machine resonance; strengthen the foundation or pipeline; the vibration frequency is very high. Shaft friction, seal, bearing, imprecision, bearing jitter, poor shrink fit, etc. 7. Causes and treatment methods of bearing heating, bearing pad scraping does not meet the requirements. The treatment method is to repair the bearing pad or replace it. The bearing clearance is too small. The treatment method is to readjust the bearing clearance or scrape; The amount of lubricating oil is insufficient and the oil quality is poor. The treatment method is to increase the amount of oil or replace the lubricating oil; The bearing is poorly assembled. The treatment method is to check the bearing assembly as required and eliminate factors that do not meet the requirements; The cooling water is disconnected. The treatment method is to check and repair; The bearing is worn or loose. The treatment method is to repair the bearing or scrap it. If it is loose, re-tighten the relevant bolts; the pump shaft is bent. The treatment method is to correct the pump shaft; The oil ring is deformed, the oil ring cannot rotate, and it cannot carry oil. The treatment method is to update the oil ring; The coupling is not well aligned or the axial clearance is too small. The treatment method is to check the alignment and adjust the axial clearance. 8. Shaft seal heating, cause and treatment method The packing is pressed too tightly or rubbed. The treatment method is to loosen the packing and check the water seal pipe; The water seal ring is misaligned with the water seal pipe. The treatment method is to recheck the alignment; The flushing and cooling are not good. The treatment method is to check the flushing cooling circulation pipe; The mechanical seal is faulty. The treatment method is to check the mechanical seal. 9. The cause and treatment method of large rotor movement are as follows: improper operation, and the operating conditions are far away from the design conditions of the pump. Treatment method: strict operation to keep the pump running near the design conditions; Balance is not smooth. The solution is to clear the balance pipe; The material of the balance plate and the balance plate seat does not meet the requirements. The solution is to replace the balance plate and the balance plate seat with materials that meet the requirements.
XBC/GJ-HRZL axial flow deep well fire pump (long shaft deep well fire pump, vertical axial flow deep well fire pump, diesel engine deep well long shaft fire pump) is optimized on the basis of the original LC or OJ vertical long shaft pump Axial flow deep well fire pump, HRZL-TC/LYC diesel engine long shaft deep well pump consists of multiple centrifugal impellers and guide casings, water pipes, transmission shafts, pump bases, gearboxes, diesel engine assemblies, control cabinets and other components. The pump base, gearbox and diesel engine assembly are located above the wellhead, and the power of the diesel engine assembly is transmitted to the impeller shaft through the concentric drive shaft of the gearbox and the lifting pipe, thereby generating flow and pressure.
We all know that a foot valve must be installed at the water inlet of a centrifugal pump, but many people do not know why a foot valve should be installed and what the effect of installing a foot valve is. The reason why a centrifugal pump needs to be installed with a foot valve is that during the operation of the centrifugal pump, water must be introduced into the pump body and the entire water inlet pipeline through a vacuum pump or other methods. When the impeller rotates rapidly, the blades cause the water to rotate rapidly. The rotating water flies out of the impeller under the effect of centrifugal force. After the water in the pump is thrown out, a vacuum area is formed in the center of the impeller. The water from the water source is pressed into the water inlet pipe through the pipe network under the effect of atmospheric pressure (or water pressure). This cycle continues, and continuous pumping can be achieved. If the foot valve is not installed, then when the centrifugal pump stops working, all the water in the pipeline will flow back into the pool. In this way, the vacuum pump must be restarted or water must be refilled into the centrifugal pump when the centrifugal pump is started next time, which is time-consuming and laborious. If the centrifugal pump is equipped with a bottom valve, then when it stops, the bottom valve will automatically close under the pressure of water, and the water can remain in the pipeline. The centrifugal pump can be started directly next time, eliminating the step of filling water or opening the vacuum pump, which is very convenient. It is worth mentioning that if the centrifugal pump has a high head or a long water outlet pipe, the centrifugal pump should be equipped with a bottom valve, which can prevent the centrifugal pump from reversing when the water flows back, causing mechanical damage or impeller shedding.
HR-XF-R/G (soft start) fire pump control equipment uses a microprocessor to control high-power thyristor components to realize the functions of software start, soft stop and power saving of AC induction motors. Soft start control cabinet Soft start refers to the process in which the output voltage of the device rises according to a rule, so that the voltage of the controlled motor rises from zero to full voltage, and the speed correspondingly smoothly accelerates from zero to rated speed. Soft start control cabinet The soft start can make the pump start and stop torque curve approach the pump torque characteristic curve, and clean up the electric and mechanical starting impact of the pump and the system to the greatest extent, so that the start is reliable and stable.
The leakage of submersible slurry pumps is mostly caused by aging and wear of the sealing device. In addition to replacing new seals, the following simple troubleshooting methods can also be adopted. 1. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 2. The sealing ring of the submersible pump loses its elasticity due to long-term use. At this time, the sealing ring can be taken out, and then a piece of paper or cloth with a thickness of 0.3 to 0.5 mm can be cut into a pad slightly larger than the original sealing ring and installed in the groove, and then the original sealing ring can be installed. 3. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 4. If the sealing ring is seriously worn, you can remove the nylon sealing ring, then apply butter on the asbestos rope, wrap it around the stainless steel sleeve and fill it slightly higher than the original nylon seat, then fill it with butter, and then press the nylon seat with bolts to compact it. If the sealing ring between the sealing box and the cast iron loses its elasticity, you can remove the sealing ring from the cast iron tank, find a piece of cardboard with a thickness of 0.6 to 1 mm, cut it into the same size, put it in the tank, and then put the sealing ring in. 5. If the rubber sealing ring of the oil hole is damaged, you can find a piece of tape, cut it into a hole slightly larger than the bolt, add a flat pad on it, and put it in the bolt oil inlet hole together.
Any machine will inevitably have problems, especially in daily life, a large number of water pump products are used. Once a water pump fails, the water supply may be insufficient or the water supply may be directly cut off, which will bring a lot of inconvenience to our life and work. The mechanical structure of commonly used water pumps is relatively simple and stable. In this way, it is convenient for us to carry out maintenance and troubleshoot common faults. If we learn to troubleshoot and repair water pumps by ourselves, we can reduce waiting time and restore water supply in time. Today, the water pump experts of our hrzl Manufacturing Co., Ltd. will briefly explain to you how to troubleshoot and repair water pump failures. 1. The pump is stuck. The solution is to turn the coupling by hand to check, disassemble and check if necessary, and eliminate the dynamic and static faults. 2. The pump does not discharge liquid and the pump is not fully filled (or the gas in the pump is not completely discharged). The solution is to refill the pump; The pump is not turning in the right direction. The solution is to check the direction of rotation; The pump speed is too low. The solution is to check the speed and increase the speed; The filter is blocked and the bottom valve is not working. The solution is to check the filter and remove the debris; The suction height is too high, or there is a vacuum in the suction tank. The solution is to reduce the suction height; check the pressure of the suction tank. 3. The pump is interrupted after discharging liquid. The reason and solution are that the suction pipeline leaks. The solution is to check the connection of the suction side pipeline and the sealing of the stuffing box: The gas on the suction side was not completely discharged when filling the pump. The solution is to require refilling the pump; The suction side is suddenly blocked by foreign matter. The solution is to stop the pump to deal with the foreign matter; A large amount of gas is inhaled. The solution is to check whether there is a vortex at the suction port and whether the immersion depth is too shallow. 4. Insufficient flow, reason and solution, the static head of the system increases. The solution is to check the liquid height and system pressure; The resistance loss increases. The solution is to check obstacles such as pipelines and check valves; The wear rings of the casing and impeller are too worn. The solution is to replace or repair the wear rings and impellers; Other parts leak. The solution is to check the shaft seal and other parts; The pump impeller is blocked, worn, and corroded. The treatment method is cleaning, inspection, and replacement. 5. The head is not enough, the cause and treatment method, the impeller is installed upside down (double suction impeller). The treatment method is to check the impeller; (Welcome to follow WeChat: Pump Friends Circle) The liquid density and viscosity do not meet the design conditions. The treatment method is to check the physical properties of the liquid; The flow rate is too large during operation. The treatment method is to reduce the flow rate. 6. Pump vibration or abnormal sound, cause and treatment method. The vibration frequency is 0~40% of the working speed. Excessive bearing clearance, loose bearing shells, impurities in the oil, poor oil quality (viscosity, temperature), oil foaming due to air or process liquid, poor lubrication, and bearing damage. The treatment method is to take corresponding measures after inspection, such as adjusting the bearing clearance, removing impurities in the oil, and replacing new oil; The vibration frequency is 60%-100% of the working speed, or the seal clearance is too large, the retaining ring is loose, and the seal is worn. The treatment method is to check, adjust or replace the seal; the vibration frequency is 2 times the working speed, misalignment, loose coupling, friction of the sealing device, deformation of the housing, bearing damage, support resonance, thrust bearing damage, shaft bending, poor fit. The treatment method is to check, take corresponding measures, repair, adjust or replace; the vibration frequency is n times the working speed. Pressure pulsation, misalignment, housing deformation, seal friction, support or foundation resonance, pipeline, machine resonance; strengthen the foundation or pipeline; the vibration frequency is very high. Shaft friction, seal, bearing, imprecision, bearing jitter, poor shrink fit, etc. 7. Causes and treatment methods of bearing heating, bearing pad scraping does not meet the requirements. The treatment method is to repair the bearing pad or replace it. The bearing clearance is too small. The treatment method is to readjust the bearing clearance or scrape; The amount of lubricating oil is insufficient and the oil quality is poor. The treatment method is to increase the amount of oil or replace the lubricating oil; The bearing is poorly assembled. The treatment method is to check the bearing assembly as required and eliminate factors that do not meet the requirements; The cooling water is disconnected. The treatment method is to check and repair; The bearing is worn or loose. The treatment method is to repair the bearing or scrap it. If it is loose, re-tighten the relevant bolts; the pump shaft is bent. The treatment method is to correct the pump shaft; The oil ring is deformed, the oil ring cannot rotate, and it cannot carry oil. The treatment method is to update the oil ring; The coupling is not well aligned or the axial clearance is too small. The treatment method is to check the alignment and adjust the axial clearance. 8. Shaft seal heating, cause and treatment method The packing is pressed too tightly or rubbed. The treatment method is to loosen the packing and check the water seal pipe; The water seal ring is misaligned with the water seal pipe. The treatment method is to recheck the alignment; The flushing and cooling are not good. The treatment method is to check the flushing cooling circulation pipe; The mechanical seal is faulty. The treatment method is to check the mechanical seal. 9. The cause and treatment method of large rotor movement are as follows: improper operation, and the operating conditions are far away from the design conditions of the pump. Treatment method: strict operation to keep the pump running near the design conditions; Balance is not smooth. The solution is to clear the balance pipe; The material of the balance plate and the balance plate seat does not meet the requirements. The solution is to replace the balance plate and the balance plate seat with materials that meet the requirements.
XBC/GJ-HRZL axial flow deep well fire pump (long shaft deep well fire pump, vertical axial flow deep well fire pump, diesel engine deep well long shaft fire pump) is optimized on the basis of the original LC or OJ vertical long shaft pump Axial flow deep well fire pump, HRZL-TC/LYC diesel engine long shaft deep well pump consists of multiple centrifugal impellers and guide casings, water pipes, transmission shafts, pump bases, gearboxes, diesel engine assemblies, control cabinets and other components. The pump base, gearbox and diesel engine assembly are located above the wellhead, and the power of the diesel engine assembly is transmitted to the impeller shaft through the concentric drive shaft of the gearbox and the lifting pipe, thereby generating flow and pressure.
We all know that a foot valve must be installed at the water inlet of a centrifugal pump, but many people do not know why a foot valve should be installed and what the effect of installing a foot valve is. The reason why a centrifugal pump needs to be installed with a foot valve is that during the operation of the centrifugal pump, water must be introduced into the pump body and the entire water inlet pipeline through a vacuum pump or other methods. When the impeller rotates rapidly, the blades cause the water to rotate rapidly. The rotating water flies out of the impeller under the effect of centrifugal force. After the water in the pump is thrown out, a vacuum area is formed in the center of the impeller. The water from the water source is pressed into the water inlet pipe through the pipe network under the effect of atmospheric pressure (or water pressure). This cycle continues, and continuous pumping can be achieved. If the foot valve is not installed, then when the centrifugal pump stops working, all the water in the pipeline will flow back into the pool. In this way, the vacuum pump must be restarted or water must be refilled into the centrifugal pump when the centrifugal pump is started next time, which is time-consuming and laborious. If the centrifugal pump is equipped with a bottom valve, then when it stops, the bottom valve will automatically close under the pressure of water, and the water can remain in the pipeline. The centrifugal pump can be started directly next time, eliminating the step of filling water or opening the vacuum pump, which is very convenient. It is worth mentioning that if the centrifugal pump has a high head or a long water outlet pipe, the centrifugal pump should be equipped with a bottom valve, which can prevent the centrifugal pump from reversing when the water flows back, causing mechanical damage or impeller shedding.
HR-XF-R/G (soft start) fire pump control equipment uses a microprocessor to control high-power thyristor components to realize the functions of software start, soft stop and power saving of AC induction motors. Soft start control cabinet Soft start refers to the process in which the output voltage of the device rises according to a rule, so that the voltage of the controlled motor rises from zero to full voltage, and the speed correspondingly smoothly accelerates from zero to rated speed. Soft start control cabinet The soft start can make the pump start and stop torque curve approach the pump torque characteristic curve, and clean up the electric and mechanical starting impact of the pump and the system to the greatest extent, so that the start is reliable and stable.
The leakage of submersible slurry pumps is mostly caused by aging and wear of the sealing device. In addition to replacing new seals, the following simple troubleshooting methods can also be adopted. 1. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 2. The sealing ring of the submersible pump loses its elasticity due to long-term use. At this time, the sealing ring can be taken out, and then a piece of paper or cloth with a thickness of 0.3 to 0.5 mm can be cut into a pad slightly larger than the original sealing ring and installed in the groove, and then the original sealing ring can be installed. 3. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 4. If the sealing ring is seriously worn, you can remove the nylon sealing ring, then apply butter on the asbestos rope, wrap it around the stainless steel sleeve and fill it slightly higher than the original nylon seat, then fill it with butter, and then press the nylon seat with bolts to compact it. If the sealing ring between the sealing box and the cast iron loses its elasticity, you can remove the sealing ring from the cast iron tank, find a piece of cardboard with a thickness of 0.6 to 1 mm, cut it into the same size, put it in the tank, and then put the sealing ring in. 5. If the rubber sealing ring of the oil hole is damaged, you can find a piece of tape, cut it into a hole slightly larger than the bolt, add a flat pad on it, and put it in the bolt oil inlet hole together.
Any machine will inevitably have problems, especially in daily life, a large number of water pump products are used. Once a water pump fails, the water supply may be insufficient or the water supply may be directly cut off, which will bring a lot of inconvenience to our life and work. The mechanical structure of commonly used water pumps is relatively simple and stable. In this way, it is convenient for us to carry out maintenance and troubleshoot common faults. If we learn to troubleshoot and repair water pumps by ourselves, we can reduce waiting time and restore water supply in time. Today, the water pump experts of our hrzl Manufacturing Co., Ltd. will briefly explain to you how to troubleshoot and repair water pump failures. 1. The pump is stuck. The solution is to turn the coupling by hand to check, disassemble and check if necessary, and eliminate the dynamic and static faults. 2. The pump does not discharge liquid and the pump is not fully filled (or the gas in the pump is not completely discharged). The solution is to refill the pump; The pump is not turning in the right direction. The solution is to check the direction of rotation; The pump speed is too low. The solution is to check the speed and increase the speed; The filter is blocked and the bottom valve is not working. The solution is to check the filter and remove the debris; The suction height is too high, or there is a vacuum in the suction tank. The solution is to reduce the suction height; check the pressure of the suction tank. 3. The pump is interrupted after discharging liquid. The reason and solution are that the suction pipeline leaks. The solution is to check the connection of the suction side pipeline and the sealing of the stuffing box: The gas on the suction side was not completely discharged when filling the pump. The solution is to require refilling the pump; The suction side is suddenly blocked by foreign matter. The solution is to stop the pump to deal with the foreign matter; A large amount of gas is inhaled. The solution is to check whether there is a vortex at the suction port and whether the immersion depth is too shallow. 4. Insufficient flow, reason and solution, the static head of the system increases. The solution is to check the liquid height and system pressure; The resistance loss increases. The solution is to check obstacles such as pipelines and check valves; The wear rings of the casing and impeller are too worn. The solution is to replace or repair the wear rings and impellers; Other parts leak. The solution is to check the shaft seal and other parts; The pump impeller is blocked, worn, and corroded. The treatment method is cleaning, inspection, and replacement. 5. The head is not enough, the cause and treatment method, the impeller is installed upside down (double suction impeller). The treatment method is to check the impeller; (Welcome to follow WeChat: Pump Friends Circle) The liquid density and viscosity do not meet the design conditions. The treatment method is to check the physical properties of the liquid; The flow rate is too large during operation. The treatment method is to reduce the flow rate. 6. Pump vibration or abnormal sound, cause and treatment method. The vibration frequency is 0~40% of the working speed. Excessive bearing clearance, loose bearing shells, impurities in the oil, poor oil quality (viscosity, temperature), oil foaming due to air or process liquid, poor lubrication, and bearing damage. The treatment method is to take corresponding measures after inspection, such as adjusting the bearing clearance, removing impurities in the oil, and replacing new oil; The vibration frequency is 60%-100% of the working speed, or the seal clearance is too large, the retaining ring is loose, and the seal is worn. The treatment method is to check, adjust or replace the seal; the vibration frequency is 2 times the working speed, misalignment, loose coupling, friction of the sealing device, deformation of the housing, bearing damage, support resonance, thrust bearing damage, shaft bending, poor fit. The treatment method is to check, take corresponding measures, repair, adjust or replace; the vibration frequency is n times the working speed. Pressure pulsation, misalignment, housing deformation, seal friction, support or foundation resonance, pipeline, machine resonance; strengthen the foundation or pipeline; the vibration frequency is very high. Shaft friction, seal, bearing, imprecision, bearing jitter, poor shrink fit, etc. 7. Causes and treatment methods of bearing heating, bearing pad scraping does not meet the requirements. The treatment method is to repair the bearing pad or replace it. The bearing clearance is too small. The treatment method is to readjust the bearing clearance or scrape; The amount of lubricating oil is insufficient and the oil quality is poor. The treatment method is to increase the amount of oil or replace the lubricating oil; The bearing is poorly assembled. The treatment method is to check the bearing assembly as required and eliminate factors that do not meet the requirements; The cooling water is disconnected. The treatment method is to check and repair; The bearing is worn or loose. The treatment method is to repair the bearing or scrap it. If it is loose, re-tighten the relevant bolts; the pump shaft is bent. The treatment method is to correct the pump shaft; The oil ring is deformed, the oil ring cannot rotate, and it cannot carry oil. The treatment method is to update the oil ring; The coupling is not well aligned or the axial clearance is too small. The treatment method is to check the alignment and adjust the axial clearance. 8. Shaft seal heating, cause and treatment method The packing is pressed too tightly or rubbed. The treatment method is to loosen the packing and check the water seal pipe; The water seal ring is misaligned with the water seal pipe. The treatment method is to recheck the alignment; The flushing and cooling are not good. The treatment method is to check the flushing cooling circulation pipe; The mechanical seal is faulty. The treatment method is to check the mechanical seal. 9. The cause and treatment method of large rotor movement are as follows: improper operation, and the operating conditions are far away from the design conditions of the pump. Treatment method: strict operation to keep the pump running near the design conditions; Balance is not smooth. The solution is to clear the balance pipe; The material of the balance plate and the balance plate seat does not meet the requirements. The solution is to replace the balance plate and the balance plate seat with materials that meet the requirements.
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