Deep well Submersible Borehole Centrifugal Water Pump

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Shanghai
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1 unit
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200 unit/month

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Product Description:

1. Applications of deep weel submersible pump:
1> For water supply from wells or reservoirs.
2> For domestic use,for civil and industrial applications.
3> For garden use and irrigation. 

2. Operating conditions:
1> Maximum fluid temperature up to +35°C.
2> Maximum sand content: 0.3%.
3> Maximum immersion: 100m.    
4> Minimum well diameter: 4".    

3. Specification of Motor:
Three-phase:380-415V/50HZ    
Single-phase:220-240V/50HZ     
Equip with special start-up control box.
Internal diameter of outlet
 1.25".1.5".2"
Special features available:
1> Other voltages are acceptable.
2> Frequency 60Hz.
3> Other mechanical seal.
4> Equip with Auto-control box.

4. Description of pumps: 

Warranty: 1 years.
(according to our general sales conditions)  

Components:                                                         Material:

Pump external casing                                          AISI 304 ss

Delivery casing                                                    Cast-Cu ASTM280

Suction lantern                                                    Cast-Cu ASTM280

Diffuser                                                                Plastic.PC

Impeller                                                                Plastic.POM

Motor external casing                                            AISI 304ss

Top cover                                                         1.Cast-Cu ASTM280. 2.Cast iron G20 UNI5007

Bottom support                                                     AISI 304 ss

Mechanical seal                                                    Special seal for deep well(carbon-SIC/TC)

Bearing                                                                 NSK(Japan)

 

5. FAQ

1> Can your pumps mount Eff.1 motors

Currently, only on request though this will shortly be a CNBM standard.

2> Are your pumps protected against dry running?

No, unprotected centrifugal pumps are not generally designed for dry running. It is important to give us or your dealer as much information as possible about the system in which the pump is used. Inlet pressure, the type of liquid to be pumped, together with relative density, viscosity and temperature, for example, are required in order to allow CNBM to recommend the right pump with the right gaskets for a long operating lifetime.

3> 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.


Deep well Submersible Borehole Centrifugal Water Pump

Deep well Submersible Borehole Centrifugal Water Pump

Deep well Submersible Borehole Centrifugal Water Pump



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Q:How do you do the yellow water from the suction pump?.
If your pump is iron, it must be impossible to avoid rust, and if you replace it with stainless steel, there will be no problem.There is also a way to add a filter or water purifier at the front of the pump to make it a little better.You can change the flow parts into stainless steel, but the price may not be cheap
Q:What is the water pump population pre rotation, what harm?
The turbulence formation flow entrance, the flow direction is complex, impact, vibration, easy to damage the device before; if there is no water pump entrance pre swirl design will affect the safety and service life of equipment.
Q:What's the difference between a double suction pump and a single suction pump?
From the literal sense to understand, double suction pump is the impeller at both ends of the water inlet, and the single suction pump is from the impeller at one end of the water.Dual suction is mainly used in the process of large flow and low lift. When the pump flow is greater than or equal to 280m3/h, the caliber of 200mm or more, if the use of a single suction pump, then the speed requirements of about 1450rpm in order to achieve the suction requirements. However, if the double suction pump is used, the size and weight of the pump are reduced, and the speed can be increased, the volumetric efficiency is increased, and the reliability of the equipment is improved.Single suction pump, also known as end suction pump, single suction pump flow is relatively small. The same flow, single suction of small size, but the axial force, bearing a large burden. The cost of single suction pump is low, the price is reasonable, widely used, but in many ways it is not as good as double suction pump. If the inlet pressure is higher, the general choice of double suction wheel can be solved. Because the axial force balance of the impeller of the single suction pump is a big problem.
Q:Can centrifugal pumps be idle? What's the status of the empty transfers?
The centrifugal pump can not be idle, idle will wear packing (packing seal, mechanical seal is almost not damaged) parts, also caused the seal ring, seal, etc. the balance disc wear quickly, and the temperature will rise sharply, causing damage; air transfer effects caused by transient overload voltage of the motor is large, if the motor can not automatically jump to motor will burn.Centrifugal pump mostly rely on the delivery of liquid lubrication and cooling seal of centrifugal pump, idling is empty load, is to open the inlet valve, close the exit valve operation can move, try reversing or empty load operation should be based on the inevitable time, pump specification shall prevail.
Q:Why does the GB/T3216 specify the pump performance tolerance as positive and negative?
Tolerance coefficient is due in the manufacturing process, will, so each pump products are possible shapes and sizes do not conform to the pattern of the situation, and ensure the test results in the value (operating point) when compared, should be allowed to have a certain tolerance. It should be noted that these tolerances are only relevant to the actual pump and do not involve test conditions and measurement uncertainties.If the pump at a certain working point (the same lift) standard (Design) flow of 20m3/h, the actual flow of 22m3/h, indicating that the pump in the design process has unreasonable place, resulting in waste of power. Deviations from the manufacturing process usually have no positive deviation.
Q:Water pump 50HZ impeller and 60HZ what is different, why not the same?
60Hz pump and 50Hz pump itself is not much difference, just that the motor speed, the rated speed is 3600 rpm, 1200 rpm, 1800 rpm, the latter is generally 3000, 1500, 1000 etc.. If it is to use the same pump, the difference is that the 60Hz motor pump flow is 50Hz, motor water pump flow of 1.2 times, the lift is 1.2*1.2=1.44 times, power is 1.2*1.2*1.2=1.728 times. So in the actual manufacture, especially some relatively large flow lift pumps, pump motor using 60Hz to use 50Hz thicker than the spindle motor of the pump impeller, the difference between the two, in addition to empty size shaft is different, what basically no difference. As for the data of package angle, the water conservancy models of different factories are different, but I don't know whether there is any difference between them. Most of them make no difference. However, if you want to use the 60Hz pump to achieve the same flow rate as the 50Hz pump, the impeller of the former should be cut to 0.833 times the size of the latter.
Q:What is the reason that the centrifugal pump outlet pressure decreases and the operating current increases?
See if the impeller problem is loose or something else. Impeller problems are generally
Q:What does the temperature range of the pump mean?
The temperature range refers to the temperature range of the medium in which the pump works. It is mainly determined by the influence of the pump material, especially the material of the shaft seal.
Q:Two pumps automatically switch start control circuit,
The puddle is full, the float switch is closed, and the relay J1 works to drive the first motor. The J1's work makes the intermediate relay 'J' work and locks itself, preparing for the work of the second machines. The water level is lowered to the required minimum position, the ball is broken, the motor is stopped and the motor is stopped. When the water level rose to the highest position again, the floating ball closed again, the relay J2 and self-locking relay J2 to drive second motors, instant intermediate relay are opened, when the water level again be reduced to the lowest position, float off, the motor stops working, stop by working in front of the intermediate relay. The whole circuit back to the original state. So that the two motors work alternately.It should be noted that the circuit diagram for simple to understand, only painted the control circuit, there is no main circuit, there is no missing phase, leakage, over-current and other protection, the actual installation needs to be installed. There is the role of time relay is to ensure that the relay J2 normal work, the intermediate relay is disconnected, so that the motor 2 does not occur wrong action, time relay can be set to a few seconds, or even less than a second. Intermediate relay can also be controlled by time relay, and its time is also set very small, so as to avoid J2 short time possible power supply.
Q:The role of water replenishing pump in circulating system
The water loss, if the level is too much loss, circulation system will not have a negative effect, the other, needs to pay for water pump system, are generally set up a level, when the automatic water level below this post.

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