Deep well pump selection method and principle

Deep well pump selection method and principle
Deep well pump can be called deep water pump, well pump, well submersible pump, he is a kind of submersible pump, but deep well pump pump inside the number of impellers a lot, so we call it multi-stage submersible pump.
Deep well pump before pumping the pump, the first step is to work with water. There is a water hole above the motor, must be filled with water to cool the motor, then install the outlet pipe and then connect the cable, the deep well pump into the liquid completely submerged, open pump, the impeller high-speed rotation, the liquid with the leaves Rotate together, in the role of centrifugal force, flying out of the impeller outward, the liquid injection in the pump chamber diffusion speed gradually slow down, the pressure gradually increased, and then from the pump outlet, the discharge pipe out. At this point, at the center of the blade at the center of the liquid is thrown to the surrounding and the formation of both no air and no liquid vacuum low pressure area, liquid pool in the pool of atmospheric pressure under the action of the suction pipe into the pump, the liquid is so continuous Constantly being sucked up from the liquid pool and continuously flowing out of the discharge pipe.
Submersible pump basic parameters
Including flow, head, pump speed, matching power, rated current, efficiency, outlet diameter and so on.
Submersible pump composition
By the control cabinet, diving cable, Yang water pipe, submersible pump and submersible motor.
Submarine pump main purpose and scope of application
Including mine rescue, construction and construction of drainage, water and agricultural irrigation and drainage, industrial water cycle, urban and rural residents cited water supply, and even disaster relief and so on.
Deep well pump has the characteristics of high flow and high head. Let's take a look at the deep well pump
1. Deep well pump should be used in the sand content of less than 0.01% of the water source, the pump room equipped with pre-water tank, the capacity should meet the start of a pre-run water. The following are the same as the "
2. New or overhauled deep well pump, should adjust the pump shell and the impeller clearance, the impeller in the operation shall not friction with the shell.
3. Deep well pump should be running before the water into the shaft and bearing the shell for pre-run.
4. Before the start of the deep well pump, the inspection items should meet the following requirements:
1) base base bolts are tightened;
2) axial clearance to meet the requirements, adjust the bolt nuts have been installed;
3) the packing gland is tightened and lubricated;
4) motor bearings have been lubricated;
5) Rotate the motor rotor and stop mechanism by hand are flexible and effective.
5. Deep well pump can not be idle in the case of water. Pumps One or two impellers should be immersed below water level 1m. Operation should always observe the changes in the water level in the well.
6. During operation, when you find a large vibration around the foundation, you should check the pump bearing or motor filler wear; when excessive wear and leakage, should replace the new pieces.
7. has been sucked, drained with mud deep well pump, before stopping the pump, the application of water rinse.
8. Before stopping the pump, you should close the water valve, cut off the power, lock the switch box. When the winter is disabled, the water should be placed in the pump.
The above describes the basic principles of deep well pump and precautions, we have to figure out the parameters of deep well water pump to confirm after the selection. Deep well pump selection method is not so complicated, according to the actual requirements to choose deep well pump to do foolproof.