cause of issue:
Water pump bottom valve closed lax or pump suction pipe leakage.
Maintenance methods:
First of all, by the eyes, ears to determine the approximate location of the fault. Then, the stainless steel centrifugal pump suction pipe pulled out from the water to check. If the pump is not tightly closed at the end of the valve should be removed at the end of the valve repair or replacement; If the water pump suction pipe leakage, the application of light to check out the specific parts of the leakage, leakage of the wall, should be taken to repair plugging Or replace the method; on the suction pipe interface leakage, should be taken with a wrench to tighten the flange connection bolts or replace the contact pads and then tighten the method for maintenance.
Centrifugal pump water shortage:
cause of issue:
① the pump head is more than the actual head.
② pump speed is not matching or due to belt slip caused by low speed.
③ pump suction is too high.
④ the pump is not enough to open the end valve or check valve clogging.
⑤ water pump suction, water leakage serious.
⑥ pump pipe and impeller impeller is partially blocked or defective.
Maintenance methods:
① re-install the pump, and appropriate to reduce the pump installation height, so that the actual lift is less than the rated pump head. If you can not rule out the fault, should be based on the actual situation, through the calculation, re-matching centrifugal pump.
② If the pump does not match, it should be based on the pump nameplate marked technical parameters, rational configuration of the power machine (or take the pump to replace the diameter of the different pulleys (pump, ), To meet the pump power, speed requirements. Secondly, check the power transmission pump group, if it is caused by the transmission belt slippage pump speed is low, you should stop cleaning the pump drive belt dirt, and re-lap as required and adjust the belt tension.
A. Transmission belt installation requirements
Pump axis to the power (diesel engine) axis spacing of 1.5 to 3.0 meters is appropriate, and should ensure that the two axes parallel to the cable method can be used to check. If the cable is equidistant from the sides of the two pulleys, the two axes are parallel; if not, a correction should be made. Otherwise, the work of the belt easy to fall off, not only affects the work, but also unsafe.
B. Installation of the drive belt
Install the belt, the belt should be so that the tight side in order to increase the angle of the belt, to improve transmission efficiency and extend the service life of the purpose.
③ re-install the pump after parking, and appropriate to reduce the pump installation height.
④ stop after the first check the pump at the end of the working state of the valve, if the valve is not open enough or open the barrier, you should open a large end valve or replace the new valve at the end. Second check the check valve of the working state, in the event of congestion or damage, should be removed to remove the plug or replace the new check valve.
⑤ After parking check with the light of the suction pump, outlet pipe, if the wall leaks, then take repair plugging or replacement of the new tube method; if the interface leak, then take a wrench to tighten the flange Connect bolts or replace the contact pads and then tighten the method.
⑥ After stopping the first check the pipeline, to identify the blockage and remove the blockage. And then remove the pump check, if the impeller is debris wound, you should remove the impeller and the winding debris cleared; if the pump is due to cavitation phenomenon, resulting in local impeller wear defects, the impeller should be repaired or replaced.
Impeller partial damage can be welding, can also be worn in the entire blade coated with a layer of epoxy mortar, can receive better control effect. In addition, the repair of the impeller should generally be carried out static balance test.
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Keywords:Stainless steel centrifugal pump, diversion irrigation dissatisfaction, water sh
Water pump bottom valve closed lax or pump suction pipe leakage.
Maintenance methods:
First of all, by the eyes, ears to determine the approximate location of the fault. Then, the stainless steel centrifugal pump suction pipe pulled out from the water to check. If the pump is not tightly closed at the end of the valve should be removed at the end of the valve repair or replacement; If the water pump suction pipe leakage, the application of light to check out the specific parts of the leakage, leakage of the wall, should be taken to repair plugging Or replace the method; on the suction pipe interface leakage, should be taken with a wrench to tighten the flange connection bolts or replace the contact pads and then tighten the method for maintenance.
Centrifugal pump water shortage:
cause of issue:
① the pump head is more than the actual head.
② pump speed is not matching or due to belt slip caused by low speed.
③ pump suction is too high.
④ the pump is not enough to open the end valve or check valve clogging.
⑤ water pump suction, water leakage serious.
⑥ pump pipe and impeller impeller is partially blocked or defective.
Maintenance methods:
① re-install the pump, and appropriate to reduce the pump installation height, so that the actual lift is less than the rated pump head. If you can not rule out the fault, should be based on the actual situation, through the calculation, re-matching centrifugal pump.
② If the pump does not match, it should be based on the pump nameplate marked technical parameters, rational configuration of the power machine (or take the pump to replace the diameter of the different pulleys (pump, ), To meet the pump power, speed requirements. Secondly, check the power transmission pump group, if it is caused by the transmission belt slippage pump speed is low, you should stop cleaning the pump drive belt dirt, and re-lap as required and adjust the belt tension.
A. Transmission belt installation requirements
Pump axis to the power (diesel engine) axis spacing of 1.5 to 3.0 meters is appropriate, and should ensure that the two axes parallel to the cable method can be used to check. If the cable is equidistant from the sides of the two pulleys, the two axes are parallel; if not, a correction should be made. Otherwise, the work of the belt easy to fall off, not only affects the work, but also unsafe.
B. Installation of the drive belt
Install the belt, the belt should be so that the tight side in order to increase the angle of the belt, to improve transmission efficiency and extend the service life of the purpose.
③ re-install the pump after parking, and appropriate to reduce the pump installation height.
④ stop after the first check the pump at the end of the working state of the valve, if the valve is not open enough or open the barrier, you should open a large end valve or replace the new valve at the end. Second check the check valve of the working state, in the event of congestion or damage, should be removed to remove the plug or replace the new check valve.
⑤ After parking check with the light of the suction pump, outlet pipe, if the wall leaks, then take repair plugging or replacement of the new tube method; if the interface leak, then take a wrench to tighten the flange Connect bolts or replace the contact pads and then tighten the method.
⑥ After stopping the first check the pipeline, to identify the blockage and remove the blockage. And then remove the pump check, if the impeller is debris wound, you should remove the impeller and the winding debris cleared; if the pump is due to cavitation phenomenon, resulting in local impeller wear defects, the impeller should be repaired or replaced.
Impeller partial damage can be welding, can also be worn in the entire blade coated with a layer of epoxy mortar, can receive better control effect. In addition, the repair of the impeller should generally be carried out static balance test.
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