QJ Serise Submersible Centrifugal Water Pump

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1 unit
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1000 unit/month

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Product Description:

1. Product overview :

 QJ series deep well submersible waterpumps are widely used in farm irrigation, sprinkler irrigation, getting water from well, water supply and drainage system for industrial and civil building, water diversion project in hilly and mountain areas water drainage project in at low-lying areas, water supply and drainage in urban and rural's mining enterprisesand various ther kinds of water conservancy facilities. Its features are that the Motor and pump are assembled into a whole, so that it is simple in structure, convenient to assemble and disassemble, easy to use and maintain safe to operate. Otherwise, it covers an small area and does not pollute water.

 

2. Operation parameters :

(1). Flow range : 10-500 m3/h

(2). Lift range : 10-600m

(3). Applicable well diameter : φ175-φ400mm

(4). Diameter scope:φ32—φ203mm;

(5).Temperature range: -15—100°C.

 

3. QJ using condition:

(1) 380V voltage deviation is no more than ±5%,frequency is 50HZ, three-phase power deviation is no more than ±1%.

(2) Motor cavity must be filled with water.

(3) The first stage impeller of the pump should be more than 2mm below the moving water surface,  pump unit should be less than 70m below the static water level.

(4) The distance from the motor bottom to well bottom must be more than 3m.

(5) Water temperature should be no more than 20°C.

(6) Sand content of the water ( by mass) should be no more than 0.01%.

(7) PH value of water 6.5-8.5.

(8) Hydrogen sulfide content of the water should be no more than 1.5mg/L.

(9). Chloride ion content of the water should be no more than 400mg/L.

(10). Water yield of water source should ensure the requirements of pump continuous working.

 

4. Material

Impeller: Cast iron HT200,or stainless steel

Pump bowl: Cast iron HT200,or stainless steel,such as ss304 ss3016

Pump shaft : Cold-drawn steel with chrome plating,or stainless steel SS304 SS316

Motor Seal: Rubber O-ring seal,mechanical seal

Motor regulating sleeve: Rubber

 

5. FAQ

(1).  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).  How long is your warranty?

Unless otherwise expressly authorized in writing, by specifying a longer period or different conditions, CNBM states that, for a period of twelve (12) months from delivery date, all Products supplied are free from defects in materials and workmanship, and conform to the applicable specifications. Either the delivery documentation or the invoice must be provided to prove delivery date. In absence of such documents, the production date appearing on the product label may suffice.

QJ Serise Submersible Centrifugal Water Pump

QJ Serise Submersible Centrifugal Water Pump




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Q:What is the definition of the pump in the capacity of the pump?
I don't know very well about your work there;General pump is a one, or two with a preparation work; pump and standby pump capacity is big, the maintenance of pumps is provided here, said in the overhaul, overhaul maintenance enabled pump, pump capacity can be greatly reduced, as long as the pump 1/4, thus reducing the volume of the standby pump the.
Q:About how to calculate the pump installation height?
Best to find water pump manufacturers, their own bad count. Sometimes is not necessarily correct, which is related to some parameters of the pump itself, with bad cavitation
Q:Relationship between power and flow of sewage pump
If you simply want a formula that satisfies your everyday application, the following will meet the requirement:N= y QH/1000,The severe gamma liquid, cattle - ETA / m3; efficiency; N- kW; H- head, power meters;Q- volume flow per cubic meter / second; divided by 1000 is the change of power W to kW;Attachment: gravity is the density of an object multiplied by gravity. Acceleration is expressed as a force in terms of the weight of a unit;The formula is applicable to situations where the calculation is not high and applicable to any liquid known or known to be heavy;The formula is reduced to three simplifications:1, ignoring the pump impeller, shaft and other friction losses;2, ignore the pump flow loss;3, ignore the pump pipe, as well as mechanical heat loss;As a result of the above three loss in the process, material, liquid delivery the same condition can be simplified as a coefficient, then adjust the ETA - efficiency coefficient, can satisfy the application value.The deduction principle of this formula is relatively simple, and the mechanical work of the pump is considered to be transferred to the mechanical energy of the liquid completely;That is, N= gamma QH, at this time, all the mechanical energy that water possesses;Electrical and mechanical energy conversion efficiency exists, then divided by the conversion efficiency ETA is obtained;N= y QH/1000;Special attention is needed. - though the efficiency represents the input electric energy and water energy ratio; but the relationship between the two have many effects, the structure of pump, pump body, liquid material feeding. If the above formula is used to estimate, it should be revised according to the actual situation.
Q:What will the water pump reversal situation?
The same will reverse pump water, but the head and the pressure greatly reduced, I just finished debugging a pumping station, Stephen multi-stage pump, installation of equipment: multistage water pump motor power 4 75KW 76% head 100 meters, frequency control, motor nameplate nominal current of 143. According to the direction of the motor steering pump mark OK set the start time of 28 seconds after 5HZ boot head start frequency can reach 50 meters (at that time did not install the pressure gauge cannot observe the water pressure of current) in early 118 about 3-5 minutes after the current is reduced to about 97, there are inspection found no problems, suspected pump problems, suspected foot valve not completely open, the reason cannot exclude the end of valve, almost in despair when the thought is not marked in the direction of the pump, re set to restart the current 129.5A to observe that later installed capacity reached 0.55MPa duct pressure gauge head close to the design requirements, the problem on the manufacturer's mark is reverse.
Q:Water pump part is stainless steel, which part is it?
The part of the pump head, that is, the part of the flow
Q:Fire hydrant and fire pump adapter difference
The most simple argument is outside fire hydrant water pump adapter, irrigation from.More outdoor fire hydrant, both sides of the road can be seen at any time, that is, red like a villain, there is a hat on the head. Pump adapter is not that hat.
Q:Electrical design into!!! Is the water pump lamp waterproof?
Not ordinary fluorescent lamp, it is waterproof and explosion-proof fluorescent lamp. And the PE protection line must be added
Q:What is LG water pump?
LG water pump refers to high-rise building feed pumpThe water pump in high-rise building adopts vertical and sectional structure, and the operation is safe, stable, long life, small occupation area and convenient installation and maintenance.Two, product features:1, compact structure, small size, small footprint.2, replacement of vulnerable parts (mechanical seal) convenient, that is, "demolition" without dismantling the motor.3, assembly without adjustment, overhaul, convenient maintenance.4. Radial force and axial force are balanced by hydraulic force, and bearing is combined.5 、 noise and vibration are small and the operation is smooth.6. The main wear parts are made of high quality wear-resistant material.7, can be equipped with the same type of ordinary motor.8 、 mechanical seal special design, good sealing, life enhancement.9, using the hot water type mechanical seal, water can be pumped.
Q:Water pump 50HZ impeller and 60HZ what is different, why not the same?
50HZ motors are usually not damaged if they run on a 60HZ circuit, but the speed will increaseConversely, the 60HZ device runs on the 50HZ circuit, and the speed drops.Because of their different frequency, make them synchronous speed rotating magnetic field winding is different, so the rotor induction (induction motor) speed will be different, the pump will naturally lift Gao Shaoxu, and often will not cause damage to the equipment, because many things are in the 50HZ 60HZ.Second, for synchronous motors, the increase and decrease of speed is much more obvious than that of induction motors, because their rotor and motor are synchronous and keep synchronous speed
Q:The car water pump is broken. What are the symptoms?
China water pump trading network for you to answer: car water leakage symptoms are mainly 1, leakage (water leakage is minor and serious), slight leakage, only in the water pump ventilation holes left on the traces of coolant color. Serious is the direct cause of higher temperature Water Leakage, symptoms of a lack of cooling liquid; 2, the weak ability of circulating pump circulation: if the ability is weak, will appear high temperature phenomenon, especially in the southern summer is more obvious; 3, abnormal sound; if the water pump bearing internal problems, abnormal noises in the belt drive that may be slight, you did not find.

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