The reason of diesel engine water pump failure and the solution Emergency Pump
Diesel engine pump is mainly divided into two kinds of a diesel engine is based on self-priming sewage pump pump set another is based on the new strong self-priming pump and increases a set of vacuum auxiliary device of diesel engine pump unit system, two kinds of diesel engine pump is the difference between the normal purchase cost is relatively low, self-priming height only 4 to 5 meters, large flow rate can be 800 cubic, And the new diesel engine pump with vacuum auxiliary system self-priming ability is strong self-priming height can reach 8-9 meters, fast water discharge time, a wide range of flow options, large flow can do 2600 cubic per hour.Emergency Pump
Another new type of vacuum auxiliary diesel engine self-priming pump vacuum there are two kinds of auxiliary devices for the user to choose a vacuum pump system on diesel engine shaft power with the pulley drive the vacuum pump with diesel engine self-priming pump operation, the system has been in the condition of suction vacuum self-priming pump self-priming performance is more stable so it is called non-stop vacuum auxiliary diesel water pump. The other is a vacuum auxiliary system that can automatically shut down. When the water is monitored to be sucked up by the vacuum pump, the vacuum pump automatically shuts down through the clutch. The diesel pump price is relatively higher, and the two vacuum auxiliary diesel pump self-priming performance is the same.Emergency Pump
Diesel pump can suction and discharge liquid containing large particles of solid and long fiber impurities, especially the new vacuum-assisted diesel pump impeller can be made into open impeller structure of self-priming pump through the particle ability is more significant. Diesel pump can be widely used in municipal sewage and waterlogging engineering, agricultural irrigation and so on.
1. The diesel pump cannot start
First of all, the power supply should be checked: whether the joint connection is reliable; Whether the switch contact is close; Whether the fuse is blown; Whether the three-phase power supply is equal. If there is open circuit, poor contact, fuse blown, missing phase, should find out the cause and timely repair. Secondly, check whether the mechanical failure of the pump itself, the common reasons are: the packing is too tight or between the impeller and the pump body is stuck and blocked by debris; Pump shaft, bearing, leakage reduction ring rust live; The pump shaft is severely bent. Exclusion method: relax the filler, dredge the sink; Disassemble the pump body to remove debris and rust; Remove pump shaft calibration or replace with a new pump shaft.
2. The pump heats up
Cause: bearing damage; The clearance of rolling bearing or bracket cover is too small; Pump shaft bending or two axes different center; The tape is too tight; Lack of oil or poor oil quality; The balance hole on the impeller is blocked, the impeller is out of balance, increasing the thrust to one side. Exclusion method: replace the bearing; Remove the back cover, and install a gasket between the bracket and the bearing seat; Investigate the pump shaft or adjust the concentricity of two shafts; Adjust the tightness of the tape appropriately; Add clean butter, butter accounts for about 60% of the bearing space; Clear the blockage in the balance hole.
3. Insufficient flow
This is because: the power speed is not matched or the belt slip, so that the speed is low; Axial flow pump blade installation Angle is too small; Insufficient head, pipeline is too long or pipeline has a right Angle bend; High suction range; The bottom valve, pipeline and impeller partial blockage or impeller defect; The outlet pipe is leaking badly. Elimination method: restore the rated speed of diesel pump, remove the belt oil scale, adjust the belt tightness; Adjust the blade Angle, reduce the installation position of the pump, shorten the pipeline or change the bending degree of the pipeline; Seal the leakage of the water pump, press the packing; Remove blockage, replace the impeller; Replace the leakage reducer ring and plug the leakage place.
Post time: Sep-19-2022