WQ Series Sewage Vertical Centrifugal Pumps

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Product Description:

1. Product Introduction 

WQ series submersible sewage pump is mainly used for municipal work, industrial building, hotels, hospitals, civil air defense, mines, etc. It can be widely used in transfer waste water, rainwater and living water etc. which contains solid grains and various long fibers CNBM WQ series sewage submersible pump have many advantages, such as, hi-efficiency, circumvolution proof, blockage free, auto-coupling, hi-reliability and auto-control, etc.

 

2. Technical Performance 

1). Discharge diameter: 50~600 mm

2)  Capacity: 10~8000m³/h

3)  Head: 5~60m

4)  Power: 1.5~315kw

5)  Diameter of pass solids: 20~145mm

 

3. Operation Condition 

1). Rated Voltage: 380V(660V), Frequency: 50Hz, 3-phase AC.

2). Temperature of medium under 40ºC.

3). PH value: 4~10.

4). Volume ratio of solid in medium below 2%.

5). Density of medium should be lower than 12000kg/m³.


4. Structure Characteristic of WQ Series Sewage Submersible Pump

WQ series submersible sewage pump is equipped with status indicator and protection device to ensure for pump safe and reliable operating.

1). The unique cable airproof is adopted, avoid leakage of cable.

2).  Heat protector in stator assure of operating life of the motor.

3).  The pump adopts outer recycling cooling design with motor power more than 18.5kw, which can keep the pump operating safely under the lowest water level.

4).  A floating switch is installed at the bottom of motor chamber to protect the mechanical seal in the motor side.

5).  The oil-water probe is installed at the up end of the oil chamber between pump and motor that can protect the mechanical seal in the side. If leakage occurs, the system will signalize and start protection.

6).  Adopt perfect mechanical seal, the sealing material adopt tungsten carbide, silicon carbide and hard metal alloy, which can prevent the water from entering into the motor, and keep the operating reliable and safety.

7).  The auxiliary impeller can balance the pressure outside of the mechanical seal, prevent the water entering into the oil chamber and prolong the life of the motor.

8).  Unique impeller design, wide passage allow large solid and long fiber passing through freely, it features non-clog, convolve-proof and good passing ability.

9).  The changeable wearing ring is installed between the impeller and the volute to keep the optimum operation conditions. 


5. FAQ

1) How can I get trained on CNBM products?

Yes, we provide training courses in our factory (products, general and specific pump technology, hydraulics, and practical applications). Please consult your sales manager or get in touch with our headquarters for more information.

2) Are your pumps cheaper than those of your competitors?

CNBM aims to give its customers the highest standards of quality and service and delivery times, all at a reasonable price.

3) Do you have self-priming pumps?

Yes, our product portfolio also includes two ranges of self-priming pumps: self-priming electric pumps and self-priming side channel pumps.


 

WQ Series Sewage Vertical Centrifugal Pumps

WQ Series Sewage Vertical Centrifugal Pumps



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Q:Variable flow variable frequency water pump how to adjust the flow?
Variable frequency pump is mainly depending on the frequency converter to adjust the speed of the pump motor, thereby regulating the flow and lift pump, the following Q1/Q2=n1/n2; H1/H2= (n1/n2) -, the frequency range of the frequency converter in 30HZ~50HZ
Q:About how to calculate the pump installation height?
When the water temperature is 4 degrees centigrade, the water pump is installed on the theoretical height of 10.33 meters, is the atmospheric pressure to the hydraulic pump inlet to the level of theory, in practical engineering, the water flow in the pipeline will produce resistance and other factors, the actual installation height generally less than 7 meters. The installation height limit of the pump shall be less than the design suction stroke of the pump.
Q:Pump pumping small is what happened?
Multi pass is self-priming pump, right? Check that the water inlet pipe is connected. If there is a little leakage, the lift will not be high. If the submersible pump, impeller pump or screw pump, they do not have irrigation. If it starts small and then flows, it may be that the water in the well is not rising so fast, that is to say, the water is poor. This happens, too. If it starts small, which may be the well did not hit the good position. Suggest a little more. Is it used in your house? Still have other uses?. For home use. A bucket of water is enough.
Q:Why should the water inlet of water pump be fitted with reducer?
In order to reduce the head loss of water pipe, avoid excessive suction vacuum suction pipe, usually larger than the diameter of the pump inlet diameter, must use reducer connection, installation reducer upper level, under the edge of the flow direction is rising, which can avoid the suction pipe does not accumulate gas.
Q:Water pump maximum flow and standard flow?
According to my estimate, a pump has the best working point, then this standard flow I think should refer to the best working point, that is to say you want to flow 480l/h, choose this pump is best
Q:Why does the pump decay when connected in parallel?
When two pumps are connected in parallel, the flow rate is less than two of the rated flow of the pump. That is because of the loss of the pipeline and the incomplete sealing of the one-way valve (backflow) and the maximum capacity limit of the pipeline. The solution is to increase the diameter of the supervisor, check whether the one-way valve is completely sealed, whether the inlet and outlet pipe is blocked or not, and reasonably reduce the elbow and the valve.
Q:What's the water pump?
Whether frozen water pump or cooling water pump, including the boiler with the water pump, as long as it is used for replenishment, are called water pump. Normally, the pump works intermittently.
Q:After the pump has a control box, but also the distribution box?
What you are saying is not a concept. The function of the control box is to control one or more equipment and to protect the equipment. The function of the distribution box is to distribute the power. The control box is connected to the power box, and the power box may be responsible for several devices at the same time. The distribution box is just one of them.
Q:Pump head is too high what's the impact?
After the determination of the pump type, such as the actual pump lift is too high, it will not only result in lower efficiency of the pump, and will seriously affect the actual flow of the pump to Q decline. On the contrary, if the pump head selected too high, but the actual operation of the lift is too low, is also affecting the pump efficiency and decrease caused by actual operation when the flow is too large, it is likely to increase the pump power beyond the rated current of the motor and the heating.
Q:What is the relationship between pump power, lift and flow?
The pump power is more marked discrepancies in the actual application, power flow, power and small traffic hours, head directly determines the flow, high lift flow is small, the power is small. This view is the largest public understanding of the subversion of the original. I 1.1KW a self suction pump the actual operation of the power, it is able to explain this, 1.1KW would say 1.1 per hour of electricity, but I made a note of the meter, the per hour only 0.6 degrees, no wonder people say the true power of pump not so much, such as 1.1KW, said to be only 750W this is true, I believe. The rated power of pump or need to reach the normal traffic to its go to this value, or is the virtual standard, industry inertia. I put the home pump is pumping, water is two hundred or three hundred meters away a shallow river, because of the long distance, flow Volume is not very large, basically only rated 1/3 bar, and I do not know is the flow of low power consumption reduction, or the actual power of the pump did not mark that big, it is still under exploration...

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