The sewage pump is a kind of energy-saving sewage pump which has been successfully developed by domestic and foreign advanced technology. The pump has the characteristics of non-blocking design, enterprise unit wastewater discharge, urban sewage treatment plant discharge system, sewage drainage station in residential area, subway, basement, civil defense system drainage station, hospital, hotel, high-rise building sewage discharge, municipal engineering, drainage of mud in construction site, sewage discharge from farms and irrigation of rural farmland, water supply device for water plant, mine exploration and water treatment equipment matching.
The four aspects of the pipeline sewage pump are not started and operated, the insufficient flow, the large vibration, and the overload is analyzed as follows:
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Phenomenon |
Inline sewage pump causes |
Inline sewage pump troubleshooting |
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Inline sewage pump cannot start and run |
Low Voltage |
Increase the voltage or use it after the voltage increasing. |
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Wire has broken circuit |
Check the fuse and wiring, and replace it |
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The impeller is stuck by debris |
Debris Removal |
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No axial clearance between the two coupling halves and jamming |
Adjust the axial clearance between the two half couplings to 0.5 mm |
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Impeller close to volute |
Reassembly, separate the impeller and volute |
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Nut off and flat key damage makes the impeller slip |
Install flat keys and nuts |
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Coupling flat key damage |
Change flat key |
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Inline sewage pump insufficient flow |
Motor speed is lower than rated speed |
Increase motor speed |
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The suction port is blocked, the mud pit is not deep, and the pump can not suck the mud. |
Remove the suction block and move the pump so that the volute is completely buried in the mud and manure |
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The mud pipe is blocked |
Check the pipe and take out the blocker |
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The medium is too thick |
Dilute the medium to increase the supply |
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Large leakage |
Check the cause of the leak and replace the part that caused the leak |
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Impeller broken |
Exchange the impeller |
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large head, long delivery |
Reduce the head, shorten the delivery distance |
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Opposite direction of turning |
Change the motor rotation direction |
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Debris around the impeller |
Debris Removal |
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Inline sewage pump noise and vibration |
High liquid temperature |
Lower liquid temperature |
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A hard object in the working fluid |
Control the size of the pump debris, increase dense filter |
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Air infiltration |
Deep volute |
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Debris in the volute |
Debris Removal |
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The nut is loose |
Tighten the nut |
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peller and volute friction |
Check the pump assembly and adjust it |
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The bearing is damaged or less oil |
Change bearings or refuel |
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The pump shaft is not concentric with the motor and the shaft is bent |
Adjust the concentricity, correct the axis |
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Concentricity change, bearing damage, shaft deformation |
Correct parts, change bearings |
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Improper assembly of the pump parts, difficulty in turning, foreign objects stuck |
Reassemble, remove foreign objects |
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Opposite direction of turning |
Change the motor rotation direction |
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low head, large flow |
Try to avoid long-term use |
