Underwater Submersible Pumps for Wells and Tanks

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Underwater Submersible Pumps for Wells and TanksBrief
It is one of the new generation sewage pump ,which designed base oninternational advanced
technology,advanced in energysaving,high efficiency,wrapped proof,non clogged,auto
installation and control,have excellent performance for medium contains particles and
fibres.


Working Condition
1. Medium temperature can not exceed 60degree normally.
2. S.G:1.0-1.3kg/dm3
3. PH:5-9


Application
Mainly apply to delivery sewage water ,waster water and rain water contains solids and
fibres:
*municipal project
*building construction
*residential area
*industrial sewage treatment
*eviroment protect
*mining


Features
1. Hydraulic design with wide flow-path non-clogged structure ,allowed fibres(3 times
length of inlet diameter),particles(30% size of inlet diameter )
2. Excellent design,high efficiency and energy saving .
3. Double mechnical seals in series,made of hard alloy corrosive proof silicon
carbide,which is durable and .wearable ,that enable pump safely operation for more
than 8000 hours continous.
4. Compact structure, small volume, easy moved and conveniently mounted , no need build
pump house, greatly reduct the cost.

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Q:Does the water pump and the circulating pump belong to the centrifugal pump?
Water pumps are generally centrifugal pumpsThe circulation pump depends on what kind of liquid it is circulatingGrease is generally gear pumps
Q:Water pump "rated lift: 6m" what do you mean?
Popularly speaking, "lift head" is the ability of water pump to lift water. 6m means that the pump can pump water to the height of 6m.
Q:What is the influence of the speed of the pump motor on the pump?
Influence the parameters of pump flow and lift.
Q:Water pump is not Sheung reason
The problem you are experiencing is stressThe above answer is only considered in the case of water absorptionJust imagine, two pumps are normal work, the same suction pipe, how can there be dissatisfaction with water or vacuum state?.According to my experience analysisYour system is three sets of parallel, lift and flow should be the same, if not the same, not in this discussion, the topic should be set up.Lift is the same, that is, in two or three units at the same time, the resulting system pressurization is the same, and water will increaseBut now your traffic is increasing at two units, but it will not increase at threeYou have selected pipeline system design, in the design of head flow under single condition is constant, if the increase in open water pump, the pressure is constant, increasing water content, according to the continuity equation Q = A X V, then the flow velocity in the tube will increase;But when the third pumps, 2Q becomes 3Q, normally velocity should be larger, but the Darcy formula shows that the velocity increases, extension resistance and local resistance will be increased, and the double square, so you can open third pumps for reasoning, when the resistance effect caused by the pipeline the increase of water flow in the pipeline can not be reused, the general formula of constant current, now the whole pipeline in turbulent stateThat is, third pumps to do the work in the water and pipe wall friction in the loss, and actually did not play a role in water supplyThe solution is to increase the flow rate by increasing the water supply pipeline
Q:What will the water pump reversal situation?
Reversal will also water out, but the amount of water is small, belong to "pressure water" effect, as if a basin of water, we do not shoot outward and down, the water will be out of the basin.
Q:What is the reason that the centrifugal pump outlet pressure decreases and the operating current increases?
The reasons are as follows:(1) motor guide bearing wear, water pump rubber bearing wear, sealing ring wearMotor or water pump bearings wear, will make the submersible pump in the machine on the wrong state of work, serious damage to submersible pumps, stator windings burned. The method is to repair or replace damaged bearings and bushings.(2) thrust bearing wear, submerged pump impeller and lower cover wearThis situation will also make the submersible pump on the machine in an abnormal state of work, serious damage to the submersible pump. The treatment method is to check the cause of the wear of the thrust bearing. Whether the mechanical seal of the shaft extension is damaged or not, which causes sand particles and impurities to enter the inner cavity of the motor, causes excessive wear of the thrust bearing. If it is caused by the mechanical seal of the submersible pump, the replacement of the thrust bearing, thrust plate and impeller, lower cover plate and other parts shall be replaced by mechanical seals at the shaft extension end.(3) the flow of the submersible pump is too large or too smallThe use of submersible pumps flow beyond the scope of use will make the motor overload of centrifugal pump or mixed flow pump, excessive flow, the pump shaft power increases, the motor overload; for the axial flow pump, the flow is too small, the pump shaft power increases, the motor overload. The treatment method is to adjust the valve properly, reduce the flow rate of the centrifugal pump or the mixed flow pump (increase the axial flow pump), and make the flow of the pump in the normal range of use.(4) the shaft of the submersible pump is bent and the bearings are not concentricThis is a serious case of submersible pumps, should be immediately overhauled, straighten the bent shaft, replace the unqualified bearings, re assembled submersible pumps.
Q:Think of several households sharing a pump
If you want to share the electricity bill, but also to pay their own, but it is difficult ~ but we can change the way ~!First of all, we use a pressure tank or a water tower to let it water automaticallyAn electric meter is installed on the water pump to measure its total power consumption ~!Then each household installed water meters independently and measured their water consumption ~!Then, according to the amount of water consumption, according to their respective proportion of electricity charges ~ but this cost is higher ~!
Q:When using a frequency converter to adjust the pump, what is the relationship between the change of the speed and the efficiency of the pump?
The wind pumps such load is usually called square torque load, which is in a certain range of speed and torque is roughly proportional to the square of the speed of N, TL=kn^2, power and speed is proportional to the cube, the energy-saving effect is obvious.
Q:The flow of the pump will be reduced, the speed will change, the power of the motor will change?
To be sure, the flow rate decreases and the speed decreases! The change of power depends on the change of the lift! If the flow rate decreases and the head rises, the power is likely to remain unchanged!
Q:Pump head is too high what's the impact?
Measure the height of 50m, using 100m lift pump, the disadvantage is a waste of energy, such as the selection of 100m lift pump, flow of 10 cubic meters, motor power 5KW, with less than 5 0m lift pump, flow of 10 cubic meters, motor power 5KW, so that the lift ratio measurement height is greater than 10-20%, on the same pump motor power next, the pump head is larger, less water.If the height of 50m is measured, the pump with 100m lift head is used, but what is the influence of the flow rate on the pump or pipe?.

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