QJ Series Multistage Deep-well Submersible Water Pumps

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1 set
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100 set/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.

(4) 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.

(5) 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.

(6) Is it really necessary to fit a bleed valve for the boxes?

It is always best to have a bleed valve as the gas produced by the fermenting sewage is potentially hazardous.

QJ Series Multistage Deep-well Submersible Water Pumps

QJ Series Multistage Deep-well Submersible Water Pumps


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Q:How to select hydraulic pump?
1. rpmOperating speed is the actual rotation speed of a pump (or motor) at work.Rated speed is the maximum speed that can operate normally for a long time under rated pressure. If the pump exceeds the rated speed, the work will cause insufficient oil absorption, vibration and noise, the parts will suffer cavitation damage, life expectancy.Minimum steady speed is the minimum speed allowed for normal motor operation. At this speed, the motor does not appear crawling phenomenon.
Q:How do vacuum pumps and pumps work together?
Vacuum suction principle of self suction pump:Assuming that the pump connected with the water inlet of a sealed container, the container has plenty of water, since the start of a water pump, water is thrown out of the water impeller pump body, water inlet seal vessel due to the extraction of water to form a vacuum cavity, this assumption will be connected to vacuum cavity and exposed to atmospheric conditions of water, water at atmospheric pressure under the effect of entry into the vacuum chamber".
Q:What is the difference between centrifugal pump and self suction pump? Which is better?
Centrifugal pumps are vertical, horizontal, single-stage, multi-stage, single suction, double suction, self suction and other forms. The centrifugal pump drives the water to rotate through the high speed rotating impeller blade, and the water is thrown out so as to achieve the purpose of pumping water. The impeller rotates at high speed, forcing the liquid at the center of the impeller to be removed at high speeds, resulting in a low pressure at the center of the impeller, and the liquid in the lower trough is continuously sucked.
Q:What is the pump, how to classify, mainly used in where?
1. vane pumpThe impeller pump is driven by the impeller to rotate the liquid at high speed and transfer mechanical energy to the transported liquidAccording to the pump impeller and runner structure characteristics can be divided into different:1) centrifugal pump2) axial flow pump3) mixed flow pump4) vortex pumps3. jet pumpA high velocity jet produced by a working fluid is used to eject the fluid, and then the energy of the ejected fluid is increased by momentum exchange
Q:If you use an ordinary 15W submersible pump, put it in the tank, if the leakage, the fish will hang it?
What will happen then? The aquarium glass is an insulator. The water in the fish tank has the same potential as the live wire, and the fish is like a bird standing on the fire line. No electricity flows through their bodies, so they won't get electrocuted. But if you put your hands into the water, you will get an electric shock, because the line voltage through the water, then your body and the earth to form a loop, current flowing through your body you will get (of course, if you stand on the insulator does not get an electric shock)
Q:What are the meanings of the vacuum pump, the front pump and the main pump?
The main pump can be understood as a booster pump, used to improve the vacuum mechanical pump with pumping quantity. As the roots pump, diffusion pumps, molecular pump. These can not use (too much pressure) so the need for mechanical pump drainage, the vacuum chamber is pumped into the rough vacuum, then the main pump starts to work.
Q:How should the water pump be installed?
Installation method of hydraulic pump(1) according to the technological requirements and the cavitation conditions of the pump, the installation height check and the civil engineering of the foundation are carried out.(2) prepare a series of flat washers and wedge gaskets of different thickness before installation.(3) according to the characteristics of the pump conveying medium, determine the material of the gasket at the connection and process the gasket.
Q:What is the cause of the damage of pump bearings?
In high-speed equipment, the most likely damage to bearings is high temperature.
Q:What is a solution pump?
(4) smooth running, low noise, no lubrication, no lubrication and low noise due to the absence of rolling bearings and motor fans(5) a wide range of use, the high temperature, high pressure, low temperature, high melting point and other conditions are able to meet the requirements2.2 shielding pump shortcomings(1) because the shielding pump adopts sliding bearings and is lubricated by the medium to be transported, the medium with poor lubricity should not be transported by shielding pump. Generally, the viscosity of the pump medium is 0.20mPa.s.(2) the efficiency of shielding pump is usually lower than that of single end mechanical seal centrifugal pump, which is approximately equal to that of double end mechanical seal centrifugal pump(3) long time in small flow operation, shielding pump efficiency is low, will lead to heat, make the liquid evaporation, and cause the pump to dry, and thus damage the sliding bearingsCanned pumps can be divided into the following types: 1) basic type 2) reverse circulation type 3) high temperature type 4) high melting point type 5) high pressure type6) self priming 7) multi stage 8) mud type
Q:What are the basic technical parameters of the pump?
The effective power of pump and output power, with Pe said. It is the effective energy per unit time from the pump in conveying out liquid obtained in the pump. Because the lift refers to the effective energy, pump output unit of heavy liquid obtained from the pump so that the product of head and the mass flow rate and the acceleration of gravity. Is to obtain the output from the pump in unit time of liquid effective energy - efficient pump power: Pe= P gQH (W) = QH (W) - P - density of liquid pumping (kg/m3); severe gamma - pump for transporting liquid (N/m3) - Q (pump flow; m3/s; H) - pump head (m); G (m/s2). The acceleration of gravity P axle power and effective power Pe is the difference of power loss in the pump, the size of the pump efficiency to measure the efficiency of the pump. As the effective power and shaft power ratio, with ETA said. Selection of related pumps:

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