1.QJ type well-used submersible electric pump (deep well pump) product overview:
QJ type submersible pump is motor and pump direct one water pump into the water to work, it is suitable for the extraction of groundwater from wells, can also be used in rivers, reservoirs, canals and other water projects: mainly used for irrigation and plateau in the drinking water, but also for the city, factories, railways and mines the use of water supply and drainage, construction site.
2.QJ type well-used submersible electric pump (deep well pump) Products Feature
Motor and water pump are integrated,running under the water, safe and reliable.
There are no special requirements for tube wells and pumping pipe.(Steel pipe well,Ash tube,native well all can be used.If the pressure allows,Steel pipe, rubber hose, plastic pipe can be used as lifting water pipes)
Simple and easy to install, convenient maintenance, small occupation area, without construction of pumping stations.
Simple structure, saving raw materials
Whether the condition of the use of the submersible pump is suitable, proper management and service life have a direct relationship.
QJ type well submersible pump can be used in the following conditions for continuous operation
Rated frequency is 50HZ and the Rated voltage is 380 + / - 5%V of the three-phase AC power supply.
The water inlet of the water pump must be 1 meters below the water level in the dynamic, but diving depth shall not exceed the static water level of 70 meters below the lower end of the motor, from the bottom of at least 1 meters above the water depth.
Water temperature is generally not higher than 20 ℃.
Water quality requirements:
Sand content in water is not more than 0.01% (weight ratio)
PH value is between 6.5 to 8.5.
Chlorine ion content is no larger than 400 mg / L
When the wall is smooth, well, not well tube stagger
4.Structure of QJ type well submersible electric pump (deep well pump)
QJ type wells with submersible pump units by: water pump, submersible motor (including cable), water pipe and control switch four major components.
Submersible pump for multi-stage single suction vertical centrifugal pump, submersible motor for confined water filling, wet vertical three-phase squirrel cage asynchronous motor, motor and pump through the claw type or single cylinder type direct coupling health; equipped with three core cables of different specifications for different levels of capacity; starting equipment air switch and self starter, water steel pipe made of different diameter, the flange connection, high pump control valve using the program.
A rubber bearing is arranged in the casing of the submersible pump, and the impeller is fixed on the pump shaft with a conical sleeve; the guide shell is connected with a screw thread or a screw bolt.
High lift submersible pump with check valve on the upper part to avoid downtime caused by the destruction of the unit.
The submersible motor shaft is arranged on the upper part of the labyrinth seal sand control device and two reverse assembly, to prevent the flow of sand into the motor.
The submersible motor with water lubricated bearings, the lower part is provided with a rubber film, adjustable pressure regulating spring, composed of surge chamber, adjustment because of the change in pressure caused by temperature; motor winding adopts polyethylene insulated nylon sheathed consumer durable goods hydro magnetic line, cable connection by QJ cable connector technology, the joint insulation paint scrape off layer, respectively connected, welding firm, with around a layer of rubber. Use waterproof tape wrapped around the 2~3 layer, 2~3 layer is coated on the outer surface of waterproof tape or glue water wrapped in a layer of rubber belt (bicycle belt) to prevent water seepage.
the motor is closed, precision bolt is used for sealing, cable outlet and plastic gasket sealing.
The upper end of the motor has a water injection hole, a discharge hole, a lower hole.
The lower part of the motor is provided with an upper and a lower thrust bearing, a groove is used for cooling, and a stainless steel pushing plate is applied to the grinding, and the upper and the lower axial forces of the pump are arranged.
5.Working principle of submersible electric pump (deep well pump) for QJ type well:
Before opening the pump, the suction pipe and the pump must be filled with liquid. Open the pump, the impeller rotating speed, which leaves the liquid together with the rotation under the action of centrifugal force, the left outside impeller injection, injection of the liquid in the pump shell gradually slow the spread of indoor speed, the pressure gradually increased, and then from the pump outlet, the outflow discharge tube. At this time, in the leaves at the center of the vacuum area of low pressure liquid was thrown to the surrounding formation there is no air and no liquid, liquid pool at the surface of the liquid under the action of atmospheric pressure, through the suction pipe into the pump, the liquid is continuously pumped up from the liquid pool is also continuously from the outflow discharge tube.
6.Application and characteristics of QJ type submersible electric pump (deep well pump) for deep well pump:
QJ type submersible pump is designed according to the national standard of energy-saving products, widely used in agricultural irrigation, industrial and mining enterprises for drainage and plateau and mountainous areas, drinking water.
This type of pump is composed of QJ submersible pump and YQS type submerged motor. The structure has the advantages of simple structure, small volume, light weight, convenient installation and maintenance, safe and reliable operation, high efficiency, energy saving, etc..
QJR series heat wells with submersible pump is directly connected with the well heat submersible three-phase asynchronous motor, the assembled heat submersible pump, hot water temperature can reach 100 °C, is an effective tool to sneak into the wells, extraction of geothermal water; geothermal energy is one of the cheapest, most clean, most with the inexhaustible new energy, is widely used in heating, bathing, medical, breeding, cultivation, agriculture, industrial and mining enterprises, entertainment services, many aspects of health care facilities. It has a pump, advantage includes simple structure, reliable operation, no noise, good performance, high unit efficiency, convenient installation and maintenance; and has heat resistance, anti-corrosion, anti-aging and other advantages, is the hot water extract of the latest products.
Vertical use, for example, in a general well;
Inclined to use, such as in the slope of the mine roadway;
Horizontal use, for example, in a pool.
7.QJ type submersible electric pump (deep well pump) note:
Submersible pump should be used to clean water in the sand content is less than 0.01%, the pump room set pre run water tank capacity should meet a starting pre-run water.
The newly installed or through deep well pump overhaul, should clearance adjustment of the pump casing and impeller, impeller and shell friction shall not be in operation.
Deep well pump should be in operation before the water through the shaft and the bearing shell of the shell body pre run.
Before the starting of the deep well pump, check the project shall meet the following requirements
The base of the base bolt has been fixed;
The axial clearance in accordance with the requirements, the insurance adjuster bolt nut has been installed;
The packing gland has been tightened and after lubrication;
Motor bearings are lubricated;
The rotor and the check mechanism of the hand rotary motor are both flexible and effective.
Deep well pump shall not be idle in anhydrous conditions. One or two pump impeller should be immersed in the water level 1m. The change of well water level should be observed frequently in operation.
During operation, when the foundation is found around a larger vibration, should check the pump bearing or motor packing wear; when excessive wear and water leakage, should be replaced with new parts.
Has suction, discharge of mud sand in the deep well pump, before stopping the pump, ought to be cleaned with clean water.
Before Stopping the pump before, should first close the valve, cut off the power supply, lock the switch box. When winter is disabled, should put the water in the net pump.
Product Categories : Submersible Pump