QJD, 0J Multistage Deep-well Submersible Pump

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Production Introduction:
QJD. QJ Multistage Deep-well submersible pump consists of motor and multistage pump.The pump consists of impeller,vane,pump body, inlet flap,outlet flap,shaft and bearing.The motor is applied with double -face mechanic sealing with"0" shaped rubber ring as static sealing.

Application:
This series pump is extensively used for electrical irrigation, forest water spraying, water pumping from well, water tower deliver and urban construction water supply and discharge for farms, villages, industrial and mining enterprise.

Condition of usage:
The pump can work properly and continuously under following operational conditions:
1.Medium is not corrosive .Sand contents should be max.0.10% by volume and granular size should be max.0.20mm.
2.Medium temperature shouldn’t be over 40*C and PH should be 6.5-8.5.
3.The pump should be opera ted within rated head. The pump should be min.0.5m over the water bottom and not be inserted into sludge.
4.Power frequency should be 50Hz,single phase voltage 220V,three-phase voltage 380V, and voltage fluctuation should be 0.9-1.1 times than the rated.


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Q:Rotary vacuum pump does not meet the requirements of vacuum, what are the reasons?
1) oil rotary vane vacuum pump is too low, no effect on the oil seal exhaust valve, rotary plug to refuel after large exhaust sound, and oil mist, that the level is too low, the gas can be eliminated.(2) the vacuum caused by the condensable steam pollution of oil should be changed, and new vacuum pump oil should be replaced.
Q:What's the word "pump"? Is that what advocates mean?RT
The words should be decided by the object that everyone supports. The supporters are called "fans"; those who support the singers are called "fans"; the people who support "stars" are called "fans". If the idol supported by everybody is called "shadow" and "view",Star of song? It can not be called "what fans", can only be called "fans"!
Q:Troubleshooting of diaphragm pump
In the application of the pump, these conditions are likely to encounter. Each situation can be divided into several possible reasons. This guide lists the causes of failures and gives appropriate corrective maintenance measures. The meaning of all the specific terms in the guide is listed later.Air valves - copper or stainless steel valves are bolted to the center of the pump by four bolts.The piston aluminum cylinder is enclosed in the air valve to control the gas flow.Cavitation - because the pump inlet for the amount of fluid to reduce or lack, the pump discharge is less than the amount of quantitative. In fact, the fluid chamber is full of fluid before it is discharged.Static pressure drop - the inlet pressure from the pump centerline to the free point - the inlet is measured in pounds, including the specific gravity and velocity of the fluid.
Q:Significance of water pump model ISO50-160
Meaning of water pump model ISO50-160: ISO- stands for international standard code (IS). 50- indicates that the inlet diameter of the pump is 50 mm (the complete model IS50-32-160 32- indicates that the outlet diameter of the pump is 32 mm). 160- represents impeller diameter.
Q:Water pump can not be pumped out, how to maintain water?
Severe vibration of water pumpIt is possible that the rotor is unbalanced, or the coupling is not good, the bearing is worn and bent, and some parts may be loosened and broken. They can be adjusted, repaired, strengthened or replaced separately.
Q:What are the failures and causes of the replacement of the fuel pump assembly?
Failure cause:1) the gasoline pump is too thick with the gasket at the junction of the axle box.2) pump film rupture or pump film and pump shell combination of sealing is not strict.3) the oil inlet valve is stuck or sealed badly.4) severe wear of the rocker arm, reducing the pump film stroke.5) the pipeline from the gasoline tank to the gasoline pump is not smooth, or the pump film spring passes.
Q:Bolus dosage of infusion pumpWhat is the purpose of the pill dose control in the special safety standard for infusion pumps? If the risk is not properly controlled, what is the degree of risk? And how can the open infusion pump be used in this regard?
(three) infusion limited number of pills produced after the dose of obstruction by infusion pump and specification of the matching test, will reach acceptable when the storage pressure of the pressure to determine the alarm blocking. Thus, some have restrictions on the infusion tube blocked after the maximum dose pill may have blocked the trigger before the alarm.
Q:How high can the pneumatic diaphragm pump be?
Pump made of polyvinylidene fluoride (PVDF) material two, the series of pneumatic diaphragm pump belongs to the fluorine plastic pneumatic diaphragm pump is also known as the corrosion products of pneumatic diaphragm pump, diaphragm liquid contact using PTFE material, using PVDF material produced by pneumatic diaphragm pump is mainly used in corrosive the pH, mainly used for chemical liquid conveying multiple solvent, corrosion resistance effect is very good. The series of fluorine plastic pneumatic diaphragm pump in high temperature less than 93.3 degrees.POM pump material also has good resistance to solvent and abrasion resistance, low friction resistance, moisture absorption is also low, the highest temperature of such pumps within 65.5 degreesPolytetrafluoroethylene (PTFE) membrane corrosion resistance is very good, in addition to liquid metal lithium, potassium fluoride, sodium fluoride, three chlorine, three fluoride high temperature oxygen, high flow rate, almost all of the chemical liquid transport (including concentrated nitric acid and aqua regia), PTFE material the maximum temperature to 176.6 degrees. However, for the diaphragm pump product as the diaphragm moves back and forth in work, we suggest that at a temperature of 120 degrees, the prerequisite is the pump body pump must be made of metal material and plastic material. The pump is the pump of PVDF material temperature is highest in less than 93.3 degrees.
Q:What is the cause of the damage of pump bearings?
Is the water pump motor overheating or damaged leaves overheating, resulting in overheating bearings, lubricating oil dry, excessive wear and tear guide system damage
Q:What is the Rhodes pump?
The ultimate vacuum of roots pump depends on the pump structure and manufacturing accuracy, and also depends on the limit vacuum of the front pump. In order to increase the limit vacuum of the pump, the roots pump can be used in series. The working principle of roots pump is similar to roots blower. As the rotor continues to rotate, the gas is pumped from the intake air to the space between the rotor and the pump housing V0, and then discharged through the exhaust port. Since the V0 space is fully enclosed after inhalation, the gas in the pump cavity does not compress and expand. But when the top of the rotor turns off the edge of the exhaust and the V0 space communicates with the exhaust side, the gas pressure at the exhaust side is higher, and a part of the gas flows back into the space V0, causing a sudden increase in the gas pressure. As the rotor continues to rotate, the gas is expelled from the pump. Roots pump in the pump cavity, there are two "8" shape of the rotor perpendicular to each other on a pair of parallel axis, by a transmission ratio of 1 of a pair of gear belt movements synchronous reverse movement of each other. In the rotor, the rotor and the pump housing between the wall to maintain a certain gap, you can achieve high speed operation.

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