135QJ Deep Well Submersible Pump

QJ series submersible pump is a kind of lifting machine directly connected to the submersible motor and pump to work in the water. This series of pumps is vertical, small footprint, compact structure, simple installation, easy maintenance and repair. It is widely used in agricultural irrigation, municipal engineering, water conservancy projects, urban water supply and drainage and industrial and mining enterprises, drought relief and drainage, etc. The flow range is 5-500m3/h, the head is 4-800m, and the power is 3-315KW. This submersible pump can efficiently lift and transport water, providing reliable water supply for various fields. Its stable performance and solid structure make it an indispensable machine and equipment for various water conservancy projects.

The power supply of this product is three-phase AC 380V (tolerance ± 5%), 50HZ (tolerance ± 1%).

The water quality shall meet the following requirements:

(1) the water temperature shall not be higher than 20 °C;

(2) the content of solid impurities (mass ratio) shall not exceed 0.01%;

(3) the PH value (acidity and alkalinity) is 6.5-8.5;

(4) the content of hydrogen sulfide shall not exceed 1.5mg/L;

(5) the content of chloride ions shall not be higher than 400mg/L.

The motor is a closed or water-immersed wet structure. Before use, the inner cavity of the submersible motor shall be filled with water to prevent empty, and then the water injection and air exhaust bolts shall be tightened, otherwise it shall not be used. The submersible pump must be completely immersed in water to work, and the immersion depth shall not exceed 70 meters, and the distance between the bottom of the pump and the bottom of the well shall not be less than 3 meters. The well water inflow shall meet the water output and continuous operation requirements of the submersible pump, and the output water shall be controlled at 0.7-1.2 times of the rated flow. The well shall be vertical, and the submersible pump shall not be used horizontally or inclined, but only vertically. The submersible pump shall be equipped with cables as required, and equipped with external overload protection devices. It is strictly prohibited to conduct no-water no-load test on the pump.

1, well submersible pump for clean water pump, prohibits the new well, pumping sediment and muddy water,

2, well water pump voltage grade 380/50HZ, the use of other voltage grades of submersible motors need to be customized. The underground cable must use waterproof cable, must be equipped with starting equipment, such as distribution box, start not ready should have commonly used motor comprehensive protection function, such as short circuit overload protection, phase protection, undervoltage protection, grounding protection, idling protection, in case of abnormal conditions, the protection device should be timely action trip.

3, the installation and use of the pump must be reliably grounded, prohibits the push and pull switch when the hands and feet are wet, must cut off the power supply before installation and maintenance of the pump, the pump use place to set up "to prevent electric shock" obvious signs:

4, down the well or before installation, the motor cavity must be filled with distilled water or non-corrosive clean cold boiling water, tighten the / water bolt, the pump on the ground test run, must be to the pump chamber water lubrication rubber bearings, instant start not more than a second, see whether the steering is the same as the steering instruction. When the pump is upright, pay attention to safety, prevent overturning injury.

5, strictly according to the provisions of the pump lift, flow range of use, to prevent low flow or high lift pumping force, the thrust bearing and other parts of the wear, the motor overload burned

6, after the pump down the well, the measurement of the motor to the ground insulation resistance should not be less than 100M, after the start to observe the voltage and current, check the motor winding insulation, whether in line with the requirements; pump storage location temperature if less than freezing point, should be dry the motor cavity water, prevent the motor cavity water ice damage caused by low temperature.

1.Structure brief: pump part is mainly composed of pump shaft, impeller, diversion shell, rubber bearing, check valve body (optional parts) and other components. The motor part is mainly composed of base, pressure regulating film, thrust bearing, thrust plate, lower guide bearing seat, stator, rotor, upper guide bearing seat, sand throwing ring, water inlet node, cable and other components

2.The main feature of this product is the use of water-cooled wet submersible three-phase asynchronous motor. The motor chamber is filled with water, used to cool the motor and lubricate the bearing. The voltage regulating film at the bottom is used to adjust the pressure difference caused by the temperature rise of the motor. In order to prevent the sand in the well water from entering the motor, two oil seals are installed on the top of the motor shaft extension end, and a sand throwing ring is installed to form a sand control structure. This design ensures the long-term reliability and stability of the motor, which is an ideal choice for pump users.

3. In order to prevent the pump shaft from running up when starting, the pump shaft and the motor shaft are connected by a coupling, and an upper thrust bearing is installed under the motor.

4.The lubrication of the motor and the pump bearing is water lubrication.

5.he motor stator winding is made of high quality submersible motor winding wire, with high insulation performance.

6. The pump is designed by computer CAD, with simple structure and good technical performance.

(1)Preparation before installation:
1. Check whether the submersible pump meets the usage conditions and scope specifed in the manual.
2. Using a heavy obiect with a diameter equal to the maximum outer diameter of the submersible pump, measure whether the inneldiameter of the wellbore can fit the submersible pump, and measure whether the well depth meets the installation requirements.
3. Check whether the wellbore is clean and whether the well water is turbid. Never use a submersible electric pump to wash the welor pump mud and sand water to avoid premature damage to the submersible electric pump.
4. Check whether the position of the welhead installation clamp is suitable and whether it can withstand the qualty of the entire unit
5. Check if the submersible pump components are complete and installed properly according to the assembly diagram in the manualRemove the filter screen and rotate the coupling to see if it rotates flexibly
6. Unscrew the water screw and fillthe motor cavity with clean, non corrosive water (note. be sure to fil it up), then tighten the waterscrew. After 12 hours of water injection, the insulation resistance of the motor should not be less than 150M Q when measured witha 500V shaking table.
7. Cable joint, cut off a 120mm rubber sleeve from one end of the outgoing cable and the matching cable with an electrician's knifethen stagger the length of the three core wires in a stepped shape, peel off a 20mm copper core, scrape of the oxide layer on theoutside of the copper wire with a knife or sand cloth, and insert the two connected wire ends in palirs.After tying the layer tightly with fine copper wire, solder it thoroughly and firmly, and sand of any. burrs on the surface. Then, forthe three joints, use polyvester insulation tape to wrap them in a semi stacked manner for three lavers. Wrap the two ends of thewrapping layer tightywith nyion thread,and then use a semi stacked method to wrap the tape for three layers. Wrap the outellayer with high-pressure insulation tape for three layers. Finally, fold the threestrands together and repeatedly wrap them for fivelayers with high-pressure tape. Each layer must be tightly tied, and the interlayer joints must be tight and fimm to prevent water frompenetrating and damaging the insulation, After wrapping, soak in water at room temperature of 20 ’c for 12 hours, and measurethe insulation resistance with a shaking table, which should not be less than 100M Ω

The attached cable wiring process diagram is as follows:

8. Use a multimeter to check whether the three-phase wires are connected and whether the DC resistance is approximately balanced.
9. Check whether the circuit and transformer capacity are overloaded, and then connect the overload protection switch or starting equipment. See Table 2 for specific models, and thenPour a bucket of water into the water pump from the water pump outlet to lubricate the rubber bearings in the pump, and then place the submersible electric pump upright and steady.Start (no more than one second) and check whether the steering direction is consistent with the steering sign. If not, swap any two connectors of the three-phase cable.Then install the filter and prepare to go down the well. If used in special occasions (such as ditches, ditches, rivers, ponds, ponds, etc.), the electric pump must be reliably grounded.

(2)Installation equipment and tools:
1. One pair of lifting chains for more than two tons.
2. A tripod with a vertical height of no less than four meters.
3. Two hanging ropes (wire ropes) that can bear a weight of more than one ton (can bear the weight of a complete set of water pumps).
4. Install two pairs of clamps (splints).
5. Wrenches, hammers, screwdrivers, electrical tools and instruments, etc.

(3)Electric pump installation:
1. The installation diagram of the submersible electric pump is shown in Figure 2. The specific installation dimensions are shown in Table 3 "List of Installation Dimensions of the Submersible Electric Pump".

2. Submersible electric pumps with a head less than 30 meters can be hoisted directly into the well using hoses and wire ropes or other hemp ropes that can bear the full weight of the entire machine, water pipes, and water in the pipes.

3. Pumps with a head of more than 30 meters use steel pipes, and the installation sequence is as follows:
①Use a clamp to clamp the upper end of the water pump part (the motor and water pump have been connected at this time), lift it with a hanging chain, and slowly tie it into the well untilPut the clamp on the wellhead and remove the hanging chain.
② Use another pair of clamps to clamp a pipe, lift it with a hanging chain 15 cm away from the flange, and lower it slowly. Between pipe flange and pump flangePut the rubber pad in place and tighten the pipe and pump evenly with bolts, nuts and spring washers.
③ Lift the submersible pump slightly, remove the clamp on the upper end of the water pump, tie the cable firmly to the water pipe with a plastic tape, and slowly tie it down until The clamp is placed at the wellhead.
④Use the same method to tie all water pipes into the well.
⑤After the lead-out cable is connected to the control switch, it is connected to the three-phase power supply.

(4)Things to note during installation:
1. If a jamming phenomenon is found during the pumping process, turn or pull the water pipe to overcome the jamming point. If various measures still do not work, pleaseDo not force the pump down to avoid damage to the submersible electric pump and the well.
2. During installation, a rubber pad should be placed at the flange of each pipe and tightened evenly.
3. When the water pump is lowered into the well, it should be placed in the middle of the well pipe to prevent the pump from running against the well wall for a long time, causing the pump to vibrate and the motor to sweep and burn.
4. Determine the depth of the water pump to the bottom of the well according to the flowing sand and silt conditions of the well. Do not bury the pump in the mud. The distance from the water pump to the bottom of the well is generally not less than 3 meters (see Figure 2).
5. The water entry depth of the water pump should be no less than 1-1.5 meters from the dynamic water level to the water inlet node (see Figure 2). Otherwise, the water pump bearings may be easily damaged.
6. The lift of the water pump cannot be too low. Otherwise, a gate valve needs to be installed on the wellhead water pipeline to control the pump flow at the rated flow point to prevent the motor from being overloaded and burned out due to large flow rates.
7. When the water pump is running, the water output should be continuous and even, the current should be stable (under rated working conditions, generally no more than 10% of the rated current), and there should be no vibration or noise. If there is any abnormality, the machine should be stopped to find out the cause and eliminate it.
8. When installing, pay attention to the setting of the motor grounding wire (see Figure 2). When the water pipe is a steel pipe, lead it from the wellhead clamp; when the water pipe is a plastic pipe, lead it from the grounding mark of the electric pump.

1. (1)After installing the submersible pump, it is necessary to recheck the insulation resistance and three-phase continuity of the switch, and check whether there are errors in the connection between the instrument and the starting equipment. If there is no problem, the test machine can be started. After starting, observe whether the indication readings of the instruments exceed the rated voltage and current specified on the nameplate, and observe whether the pump has noise and vibration. If everything is normal, it can be put into operation.
2. (2)After the first operation of the pump for four hours, the motor should be shut down to test the thermal insulation resistance quickly, and its value should not be less than 0.5 megaohm.
3. (3)After the pump is shut down, it should be started after five minutes to prevent the water column in the pipe from being completely reflowed and causing excessive motor current and burnout.
4. (4)After the pump is put into normal operation, in order to prolong its service life, it is necessary to check whether the supply voltage, working current and insulation resistance are normal regularly. If the following conditions are found, the pump should be shut down immediately to troubleshoot.
5.  

 1 In the rated condition, the current exceeds 20%.

 2 The dynamic water level drops to the water inlet section, causing intermittent water.

 3 The submersible pump has severe vibration or noise.

 4 The supply voltage is lower than 340 volts.

 5 A fuse is burned out.

 6 The water supply pipe is damaged.

 7 The motor's thermal insulation resistance is lower than 0.5 megaohm.

5. (5)Unit disassembly:
6.  1 untie cable rope, remove the pipeline part, remove the wire plate.

 2 screw down the water bolt, put the water in the motor chamber.

 3 remove the filter, loose the fixed screw on the coupling to fix the motor shaft.

 4 screw down the bolt connecting the inlet junction with the motor, and separate the pump from the motor (pay attention to the unit cushion when separating, to prevent the bending of the pump shaft)

 5 the disassembly sequence of the pump is: (see figure 1) inlet junction, impeller, diversion shell, impeller...... check valve body, when removing the impeller, use special tools to loosen the conical sleeve of the fixed impeller first, and avoid bending and bruising of the pump shaft in the process of disassembly.

 6 the disassembly process of the motor is: (see figure 1) place the motor on the platform, and remove the nuts, base, shaft head locking nut, thrust plate, key, lower guide bearing seat and double head bolt from the bottom of the motor in turn, and then take out the rotor (pay attention not to damage the wire package) and finally remove the connecting section and upper guide bearing seat.

 7 unit assembly: before assembly, the rust and dirt of the parts should be cleaned, and the mating surface and fasteners should be coated with sealant, and then assembled in the opposite order of disassembly (the momentum of the motor shaft is about one millimeter after assembly), after assembly, the coupling should be flexible, and then the filter screen test machine. 6. The submersible pump is known for its durability and efficiency, providing you with a lasting pumping solution. When the operating time is more than one year per year, or if the operating time is less than one year, but the immersion time is up to two years, it must be disassembled and inspected in accordance with Article 5 to replace the worn parts. This pump is well designed to ensure efficient operation and reliability, so that you can rest assured. Whether it is used for pumping water from a family pond or pumping water for agricultural irrigation systems, this product can meet your needs. Choose this high-quality pump to keep your pump system in the best condition at all times, ensuring smooth operation and extending its service life.

 1, put out the water in the motor cavity (especially in winter to prevent the motor from freezing), and tie the cable well.

 2, store in an indoor room without corrosive substances and gases, with a temperature below 40 °C.

 3, long-term use should pay attention to the rust prevention of submersible pumps.

01 Deep well water intake

02 High-rise water supply

03 mountain water supply 

04 tower water

05 Agricultural irrigation

06 garden irrigation

07 river water intake

08 domestic water