product name |
Drainage pump, submersible pump, deep well pump, well submersible pump |
Region oriented |
|
brand |
other |
model |
250QJ50-390-90KW |
texture of material |
cast iron |
Provide processing customization |
yes |
classification |
Clean water submersible pump |
Drive mode |
Electric |
Number of impellers |
multistage |
performance |
Frequency conversion is non blocking, corrosion resistant, wear-resistant and leak free |
speed |
2875 r/min |
lift |
50 m |
flow |
390 m3/h |
purpose |
other |
Processing customization |
yes |
principle |
centrifugal pump |
Qj wear-resistant drainage pump qj high-pressure drainage pump qj high speed drainage pump qj high-power drainage pump
Working principle of deep well pump:
Before starting the pump, the suction pipe and pump shall be filled with liquid. After the pump is started, the impeller rotates at a high speed. The liquid in the impeller rotates with the blade. Under the centrifugal force, it flies away from the impeller and shoots out. The speed of the injected liquid in the diffusion chamber of the pump housing gradually slows down, the pressure gradually increases, and then flows out from the pump outlet and discharge pipe. At this time, due to the liquid being thrown around at the center of the blade, a vacuum low-pressure area with neither air nor liquid is formed. Under the effect of the atmospheric pressure on the pool surface, the liquid in the liquid pool flows into the pump through the suction pipe. In this way, the liquid is continuously pumped up from the liquid pool and continuously flows out of the discharge pipe.
How to install and fix the deep well pump
Many users have never used deep well pump products before purchasing deep well pumps, and do not know how to install deep well pumps, and what aspects of deep well pump installation precautions need special attention. In order to help users understand how to install deep well pumps and what precautions should be taken for deep well pump installation, Boyu hereby shares the following knowledge about deep well pump installation:
1. The deep well pump should be filled with water before being loaded into the well. In the process of water filling, the pump must not be laid on the ground to add water. It is incorrect for the pump to add water lying on the ground because the water is not enough at all. No matter how large the pump is, the pump must be filled with water vertically before being put into the water.
2. Before the pump is ready to be put into the water, it is also necessary to start it by inching to see if the wiring of the deep well pump is reversed, and if the deep well pump is reversed.
3. In terms of how the deep well pump should be fixed, many people do not know how to fix the deep well pump. In fact, the method of fixing the deep well pump is very simple. Use the outlet steel pipe to connect with the pump outlet, and then use the steel wire rope to hoist the deep well pump slowly down to the bottom of the well, and then use the steel pipe section by section to connect with the downward downward direction. It is OK to control the deep well pump within 1m from the bottom of the pool, Then the outlet steel pipe is fixed at the wellhead so that both the outlet pipe and the wire rope can be subjected to the gravity of the pump.
4. When configuring the control cabinet of deep well pump, it must be noted that the difference between the deep well submersible pump and the general submersible pump is that the supporting control cabinet must be at the same level as the motor power of the deep well pump, otherwise the deep well pump motor will be burned out due to the failure of the deep well pump to start. For example, the motor power of the deep well pump is 55KW, Then the control cabinet should be 75KW autotransformer step-down control cabinet or soft starter and variable frequency control cabinet.
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