QJ Series Multistage Deep-well Submersible 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 Pumps

QJ Series Multistage Deep-well Submersible Pumps


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Q:Is the flow meter in front of the pump or after the pump?
After the pump, the reasons are as follows, before the pump, you pump fluid through the pump will produce negative pressure in front of the pump, negative pressure on the flow of the life of the impact, the pump will not, Suzhou first Chi meter
Q:How many square cables does the submersible pump for 7.5KW need?
7.5KW's submersible pump requires 2.5 square aluminum cables.Calculate the current value of submersible pump first:
Q:Double floor sewage pump circuit diagram of a small problem
Question 3 when the water level is low, when the 1KA is connected, the pump will run depending on where your SS selector switch is located. Its left and right position, running pump and standby pump definition is different, left position is 1#, running 2# standby, right position is 2# running, 1# standby. Only inIn case the high level switch 2KA is connected, the standby pump may work at the same time.
Q:Roots pump and dry pumpRecently, the work involved in the vacuum pump, do not understand this, is a ads602 vacuum pump
Here the roots pump and dry pump must be used, because the roots pump is not used alone, and must be a stage vacuum pump (pre vacuum pump can be dry pump, water ring vacuum pump and rotary vane vacuum pump can be, you here with dry pump series)
Q:What are the constant pressure pumps?
CatalogBooster pump definitionMechanical classification, methane booster pump, pneumatic booster pumpGas-liquid booster pumpAir booster pumpChlorine booster pumpWorking principlefunctionMechanical installationMechanical selection of booster pump definitionMechanical classification, methane booster pump, pneumatic booster pumpGas-liquid booster pumpAir booster pumpChlorine booster pumpWorking principle
Q:Why can the centrifugal pump hold down the pressure?
The pump before starting to pump shell and the water pipe filled with water, and then start the motor, the pump shaft to drive the impeller and water do high-speed rotation, centrifugal water movement, was thrown to the outer edge of the impeller, the pressure water pipeline flow through the volute pump into the pump shell.
Q:What is the function of the heating pump system for the water pump design?
Will cause some of the internal friction gap disappeared, the coupling center damage. In this case, starting the pump inevitably results in vibration, friction, etc.
Q:Any center of the pump
Looking forAlignment means the position of the center of rotation of the pump and motor so that they are in the same line.At least three times after the initial installation or after installation:
Q:What is a gear pump for?
Oil pump casing wearIt is mainly the wear of the floating sleeve hole (the normal clearance between the gear shaft and shaft sleeve is 0.09~0.175mm, and the maximum shall not exceed 0.20mm). The gear work is affected by the pressure oil, the gear tip is close to the oil pump casing, and the low pressure chamber part of the pump body is worn. Another kind of wear is the circumferential wear of the work surface in the shell. This kind of wear is mainly caused by the addition of oil which is not clear, so the oil without impurities is necessary.
Q:What flowmeter is installed after the pneumatic diaphragm pump?
Compressed air source, the general pneumatic diaphragm pump starting gas source for 0.1~0.2mpa,The maximum working pressure is 0.7~0.8mpa, so in this pressure range, you can use the air filter relief pressure valve gas pipe, adjusting for air pressure, when the pressure is bigger, diaphragm movement faster, so the greater the flow, and vice versa

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