Agricultural pumps are widely used, how to properly use and maintenance of agricultural pumps for irrigation, drainage and pump the normal operation and life is essential.
Water pump installation
Pump installation and calibration is a critical first step, although the pump unit has been calibrated at the factory, but due to transportation, assembly and other reasons, will lead to varying degrees of deformation or loosening, therefore, when the installation of the pump to install, Correction.
First, the installation steps
1. Remove the grease and dirt from the base and place the base on the foundation.
2. Level the level of inspection with the base, you can use wedge leveling.
3. Water the base and anchor bolt holes with cement.
4. The cement should be checked after the base and anchor bolt hole is loose, appropriate tighten the anchor bolts, re-check the level of.
5. Clean the support plane of the base, the pump foot and the plane of the motor feet, and mount the pump and motor to the base.
6. Check and adjust the pump and motor axis coincidence, check the pump shaft and the motor shaft centerline are the same, the two couplings of the cylindrical upper and lower left and right difference of not more than 0.1 mm, can be adjusted to the concentric slice; Two coupling end surface to leave the gap 2-3 mm.
Second, the pump in the installation of the precautions
1. The actual suction suction of the pump must be lower than the allowable suction of the pump.
2. Water pump inlet pipe should be as short as possible, straight, in the horizontal line shall not be raised or higher than the pump, in order to avoid the operation of the pump cavitation increased efficiency.
3. Pump outlet pipe should be appropriate to expand and try to close to the water surface, too high or too low will increase power consumption. Long-distance transport should take a larger diameter. Pump pipe should have a dedicated bracket, does not allow the weight of the pipeline added to the pump, to avoid the pump crushed.
4. Bottom of the pump or water inlet from the bottom of the water source and the edge of the distance of the water shall not be less than the diameter of the inlet pipe into the water depth of not less than 0.5 meters. When installing two or more water pumps, the distance between the bottom valve and the inlet pipe shall not be less than 2 times the outer diameter of the bottom valve or inlet pipe.
5. Discharge pipeline Check valve should be installed outside the gate valve, water pump head should be installed more than 20 meters check valve.
6. Pulley diameter should be determined according to the speed calculation, in accordance with the formula should be taken into account when the belt diameter pulley slip factor, the calculated value for appropriate adjustments.
Pump start, run and stop
Pump start-up, operation and stop should be strictly in accordance with operating procedures.
First, start
1. Pump start, should be connected before the pump to determine the direction of rotation of the motor is correct, pump rotation is flexible.
2. Close the gate valve on the discharge line.
3. Fill the pump with water or a vacuum pump.
4. Turn on the power. When the pump reaches the normal speed, and then gradually open the discharge valve on the pipeline, adjust to the required conditions. In the event that the gate valve on the discharge line is closed, the pump can not be operated continuously for more than 3 minutes.
Second, the operation
1. In the boot process, we must observe the instrument readings, bearing temperature rise heating, packing leakage and pump vibration and noise are normal, if abnormal circumstances, should be promptly dealt with.
2. Bearing temperature is not higher than 80 ℃, or shall not exceed the ambient temperature of 40 ℃.
3. Packing normal, leakage should be a small amount of uniform.
4. Lubrication with oil, the bearing oil level should be maintained in the normal position, not too high or too low, such as low, should be promptly added lubricating oil. Butter lubrication, the new pump should run after 300 hours of oil change, after 1500 hours for each operation for an oil. Ambient temperature below 0 ℃, suitable for oil lubrication; ambient temperature above 0 ℃, suitable for butter lubrication.
Third, stop
Gradually turn off the spit out of the gate valve after the cut off the power supply.
Common Faults and Eliminating Methods of Water
First, the pump does not water
First, the pump filled with water, remove the tube air; the second is to reduce the pump suction height, so that the suction range in the pump; Third, check the bottom valve and impeller, valve has been opened, has not been Silt blockage, if necessary, to clean the impeller. Fourth, check the power system, see the power cord is wrong, the direction of rotation is correct.
Second, the pump out of small water
First, the speed is insufficient, should check the power system. Second, the sealing ring and the impeller ring mouth parts wear serious, should replace the seal ring and impeller. Third, the bottom valve, impeller debris, should be demolished at the end of the valve and impeller and remove debris. Fourth, the pump suction process more than its rated suction process, the pump in the work process, the water level will drop, so that the pump will work in the state of super suction. According to the determination of more than 0.5 m suction pump, the water will be reduced by about 20%, should take the pump down or in the installation should be considered when the water level drops and other measures to make the pump suction range in the normal range. Fifth, the export pipeline resistance, water loss, should shorten the pipeline or increase the diameter. Sixth, the pump head is too large, according to the actual head and the calculated water loss situation to re-select the appropriate flow pump.
Third, the pump internal sound abnormal
First, the flow is too large, to reduce the export gate valve opening or increase the resistance within the pipe to reduce the flow. Second, there is air infiltration, check whether the suction pipe lax situation, plug the leak at. Third, suction is too high to reduce the water absorption height.
Fourth, bearing overheating, pump vibration
First, there is no oil, to add lubricating oil. Second, the pump shaft bending. Once the pump vibration, should be immediately repaired. If the pump shaft bending is not serious, can be corrected manually screw correction, and then re-use; if bending serious, should be replaced immediately. Third, no axial bearing clearance, bearing cover plus pad face adjustment. Fourth, the transmission belt too tight, should adjust the position.
Fifth, the motor heating, power consumption big
First, the packing pressure is too tight, appropriate to relax packing gland. Second, because the impeller wear too much, the pump out of the water increase, the replacement of the impeller or the appropriate export of small gate valve to increase the outlet pipe resistance to reduce the flow.
Water pump maintenance and maintenance
In addition to the use of pumps in strict accordance with the installation manual for use, but also should pay attention to two points: First, avoid "experience." Such as water pump at the end of the valve leakage, some hand diagram easy, in each boot, the first to fill some of the inlet pipe dry soil, re-irrigation soil will be washed in the end valve, so that the end valve does not leak. This method looks simple, but it is not taken. Because when the pump began to work, the end of the sand inside the valve will enter the pump with water, wear and tear impeller, pump shell and shaft, seriously affecting the service life, the correct method should be on the end of the valve repair, can not be repaired replace. Second, the failure to be promptly ruled out, should not allow the unit "sick" work. For example, found that the shaft shaft packing wear serious, it is necessary to increase the filler, otherwise it will fill the pump shaft leak. Water pump shaft packing leakage not only make the unit energy consumption is too large, and there will be cavitation phenomenon, accelerate the impeller damage, a direct impact on the pump life. For example, found that the pump severe vibration, should immediately stop the inspection, if the pump shaft bending deformation is likely to occur security incidents.
Pump unit and pipeline in use for a period of time, should do the following maintenance work:
1. Discharge the remaining water from the pump and tubing.
2. If the disassembly is convenient, the water pump and pipeline can be dismantled and cleaned.
3. Check the ball bearings, such as wear within the jacket, Kuang move, ball wear or surface spots to be replaced. Can still be used with gasoline or kerosene to clean the bearing grease preserved.
4. Check whether there are cracks or holes in the impeller, impeller nut is loose, if damaged should be repaired or replaced. Check the impeller wear ring clearance, if more than the specified value, should be repaired or replaced.
5. If the pump and pipeline are not removed, the application cover will seal the export to prevent debris into.
6. When the tape is not in use, remove the tape, wipe with warm water and keep it in place where there is no direct sunlight, and do not store in places where oil, corrosive substances and smoke are present. Under no circumstances should the tape be stained with oil such as oil, diesel or gasoline, and do not apply rosin and other sticky substances to the tape. Tape Before use, be sure to remove any white powder from the tape contact surface.
7. All screws, bolts with wire brush clean, and coated with oil or immersed in diesel to save.
Water pump installation
Pump installation and calibration is a critical first step, although the pump unit has been calibrated at the factory, but due to transportation, assembly and other reasons, will lead to varying degrees of deformation or loosening, therefore, when the installation of the pump to install, Correction.
First, the installation steps
1. Remove the grease and dirt from the base and place the base on the foundation.
2. Level the level of inspection with the base, you can use wedge leveling.
3. Water the base and anchor bolt holes with cement.
4. The cement should be checked after the base and anchor bolt hole is loose, appropriate tighten the anchor bolts, re-check the level of.
5. Clean the support plane of the base, the pump foot and the plane of the motor feet, and mount the pump and motor to the base.
6. Check and adjust the pump and motor axis coincidence, check the pump shaft and the motor shaft centerline are the same, the two couplings of the cylindrical upper and lower left and right difference of not more than 0.1 mm, can be adjusted to the concentric slice; Two coupling end surface to leave the gap 2-3 mm.
Second, the pump in the installation of the precautions
1. The actual suction suction of the pump must be lower than the allowable suction of the pump.
2. Water pump inlet pipe should be as short as possible, straight, in the horizontal line shall not be raised or higher than the pump, in order to avoid the operation of the pump cavitation increased efficiency.
3. Pump outlet pipe should be appropriate to expand and try to close to the water surface, too high or too low will increase power consumption. Long-distance transport should take a larger diameter. Pump pipe should have a dedicated bracket, does not allow the weight of the pipeline added to the pump, to avoid the pump crushed.
4. Bottom of the pump or water inlet from the bottom of the water source and the edge of the distance of the water shall not be less than the diameter of the inlet pipe into the water depth of not less than 0.5 meters. When installing two or more water pumps, the distance between the bottom valve and the inlet pipe shall not be less than 2 times the outer diameter of the bottom valve or inlet pipe.
5. Discharge pipeline Check valve should be installed outside the gate valve, water pump head should be installed more than 20 meters check valve.
6. Pulley diameter should be determined according to the speed calculation, in accordance with the formula should be taken into account when the belt diameter pulley slip factor, the calculated value for appropriate adjustments.
Pump start, run and stop
Pump start-up, operation and stop should be strictly in accordance with operating procedures.
First, start
1. Pump start, should be connected before the pump to determine the direction of rotation of the motor is correct, pump rotation is flexible.
2. Close the gate valve on the discharge line.
3. Fill the pump with water or a vacuum pump.
4. Turn on the power. When the pump reaches the normal speed, and then gradually open the discharge valve on the pipeline, adjust to the required conditions. In the event that the gate valve on the discharge line is closed, the pump can not be operated continuously for more than 3 minutes.
Second, the operation
1. In the boot process, we must observe the instrument readings, bearing temperature rise heating, packing leakage and pump vibration and noise are normal, if abnormal circumstances, should be promptly dealt with.
2. Bearing temperature is not higher than 80 ℃, or shall not exceed the ambient temperature of 40 ℃.
3. Packing normal, leakage should be a small amount of uniform.
4. Lubrication with oil, the bearing oil level should be maintained in the normal position, not too high or too low, such as low, should be promptly added lubricating oil. Butter lubrication, the new pump should run after 300 hours of oil change, after 1500 hours for each operation for an oil. Ambient temperature below 0 ℃, suitable for oil lubrication; ambient temperature above 0 ℃, suitable for butter lubrication.
Third, stop
Gradually turn off the spit out of the gate valve after the cut off the power supply.
Common Faults and Eliminating Methods of Water
First, the pump does not water
First, the pump filled with water, remove the tube air; the second is to reduce the pump suction height, so that the suction range in the pump; Third, check the bottom valve and impeller, valve has been opened, has not been Silt blockage, if necessary, to clean the impeller. Fourth, check the power system, see the power cord is wrong, the direction of rotation is correct.
Second, the pump out of small water
First, the speed is insufficient, should check the power system. Second, the sealing ring and the impeller ring mouth parts wear serious, should replace the seal ring and impeller. Third, the bottom valve, impeller debris, should be demolished at the end of the valve and impeller and remove debris. Fourth, the pump suction process more than its rated suction process, the pump in the work process, the water level will drop, so that the pump will work in the state of super suction. According to the determination of more than 0.5 m suction pump, the water will be reduced by about 20%, should take the pump down or in the installation should be considered when the water level drops and other measures to make the pump suction range in the normal range. Fifth, the export pipeline resistance, water loss, should shorten the pipeline or increase the diameter. Sixth, the pump head is too large, according to the actual head and the calculated water loss situation to re-select the appropriate flow pump.
Third, the pump internal sound abnormal
First, the flow is too large, to reduce the export gate valve opening or increase the resistance within the pipe to reduce the flow. Second, there is air infiltration, check whether the suction pipe lax situation, plug the leak at. Third, suction is too high to reduce the water absorption height.
Fourth, bearing overheating, pump vibration
First, there is no oil, to add lubricating oil. Second, the pump shaft bending. Once the pump vibration, should be immediately repaired. If the pump shaft bending is not serious, can be corrected manually screw correction, and then re-use; if bending serious, should be replaced immediately. Third, no axial bearing clearance, bearing cover plus pad face adjustment. Fourth, the transmission belt too tight, should adjust the position.
Fifth, the motor heating, power consumption big
First, the packing pressure is too tight, appropriate to relax packing gland. Second, because the impeller wear too much, the pump out of the water increase, the replacement of the impeller or the appropriate export of small gate valve to increase the outlet pipe resistance to reduce the flow.
Water pump maintenance and maintenance
In addition to the use of pumps in strict accordance with the installation manual for use, but also should pay attention to two points: First, avoid "experience." Such as water pump at the end of the valve leakage, some hand diagram easy, in each boot, the first to fill some of the inlet pipe dry soil, re-irrigation soil will be washed in the end valve, so that the end valve does not leak. This method looks simple, but it is not taken. Because when the pump began to work, the end of the sand inside the valve will enter the pump with water, wear and tear impeller, pump shell and shaft, seriously affecting the service life, the correct method should be on the end of the valve repair, can not be repaired replace. Second, the failure to be promptly ruled out, should not allow the unit "sick" work. For example, found that the shaft shaft packing wear serious, it is necessary to increase the filler, otherwise it will fill the pump shaft leak. Water pump shaft packing leakage not only make the unit energy consumption is too large, and there will be cavitation phenomenon, accelerate the impeller damage, a direct impact on the pump life. For example, found that the pump severe vibration, should immediately stop the inspection, if the pump shaft bending deformation is likely to occur security incidents.
Pump unit and pipeline in use for a period of time, should do the following maintenance work:
1. Discharge the remaining water from the pump and tubing.
2. If the disassembly is convenient, the water pump and pipeline can be dismantled and cleaned.
3. Check the ball bearings, such as wear within the jacket, Kuang move, ball wear or surface spots to be replaced. Can still be used with gasoline or kerosene to clean the bearing grease preserved.
4. Check whether there are cracks or holes in the impeller, impeller nut is loose, if damaged should be repaired or replaced. Check the impeller wear ring clearance, if more than the specified value, should be repaired or replaced.
5. If the pump and pipeline are not removed, the application cover will seal the export to prevent debris into.
6. When the tape is not in use, remove the tape, wipe with warm water and keep it in place where there is no direct sunlight, and do not store in places where oil, corrosive substances and smoke are present. Under no circumstances should the tape be stained with oil such as oil, diesel or gasoline, and do not apply rosin and other sticky substances to the tape. Tape Before use, be sure to remove any white powder from the tape contact surface.
7. All screws, bolts with wire brush clean, and coated with oil or immersed in diesel to save.
Manufacturers recommend: Shenlong stainless steel fountain submersible pump
Keywords:Agricultural water pumps, proper use and maintenance, irrigation
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