What is a Submersible Pump?

Submersible pump is an important equipment for water extraction in deep wells. When in use, the whole unit works submerged in the water and extracts groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, and can also be used for fountain landscapes.

Submersible pump

Submersible pump is an important equipment for water extraction in deep wells. When in use, the whole unit works submerged in the water and extracts groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, and can also be used for fountain landscapes.

The hot water submersible pump is used for hot spring bathing. It can also be used to extract groundwater from deep wells. It can also be used for rivers, reservoirs, canals and other water lifting projects. It is mainly used for farmland irrigation and water for humans and livestock in high mountainous areas. It can also be used for central air-conditioning cooling, heat pump units, cold pump units, cities, factories, railways, mines, and construction site drainage. The general flow can reach 5 ~ 650m³ / h, and the head can reach 10-550 meters.

Chinese name

Submersible pump

Foreign name

submersible pump

Classification

Clean water submersible pump

Precautions

Power supply must be reliably grounded

Use

Mine rescue, industrial cooling

Make up

Control cabinet, diving cable

installation steps

1. Acceptance of deep well submersible pumps: When the customer picks up the goods from the logistics company, he should carefully check and inspect the cable sheath for damage. Whether the pump is broken.

2. Loading and unloading: Be careful when loading and unloading the truck to avoid damaging the concentricity of the unit or breaking the cable insulation.

3. Inspection steps before the whole unit goes down the well: A. Disassemble the filter screen, and use a pry bar to turn the coupling to rotate flexibly. B Put the electric pump upright and fill it with water, connect the cable connector, and soak the connector in a water basin. Shake the joint to ground resistance (single finger joint insulation resistance to water) value is not less than 500 megohms. C. Put the pump upright and use a suitable container to add washing powder water to the pump outlet. At the same time, slightly click the motor start button to carefully observe the steering of the pump. The time should not exceed 2 seconds, and mark the continuity.

4. On-site assembly steps when the pump is transported separately: A. Before installation, place the motor vertically and open the air vent and water injection hole. Note that both water plugs must be opened. Fill the water and tighten the water injection plug and the water drain plug. Observe whether the motor is leaking. If it leaks, do not go down the well. The reason may be bumps during transportation. You should contact the agent or the manufacturer in time to resolve the problem until it does not leak (observe for 10-15 minutes). Then shake test the insulation resistance of the motor, its value is not less than 50 megohms. B. Wrap the cable connector, and then test the rotation of the motor after it is wrapped. Check whether the rotation of the motor is consistent with the direction of the arrow marked on the pump and mark the continuity.

5. Inspection of the pump when the pump is separated

A. Remove the upper casing of the pump to expose the top impeller, B. Turn the impeller by hand to see if it is flexible C. Pull the impeller along the pump shaft direction to observe the total displacement of the impeller seven times (generally QJ pump 4-6 mm) D. The installation coupling is integrated with the motor so that there is no gap between the motor shaft head and the water pump shaft head. E. Look at the clearance between the impeller and the impulse, and it should be in the middle of the total impulse (allowable deviation ± 0.5mm). F. When the deviation is greater than 0.5 mm, use the adjusting pad to adjust to the middle position. Turning the impeller by hand should be flexible. G. Then drill the top wire hole of the coupling and tighten the top wire to install the upper shell. H. Use a pry bar to turn the coupling once again and it should rotate flexibly for qualified assembly. Then install the filter and cable trunking box.

6. Deep well submersible pump goes down: Before going down the well, use a rope to hang a log or steel pipe with the same length as the unit (diameter equal to the unit's maximum outer diameter) to test whether the well pipe is upright. So as not to jam the unit when running down the well.

7. Bundling of cables: Cables should be tied to the riser pipe with insulating cable ties, not metal wires.

8. Unit control and startup: selection of control equipment. Motor power × 1.2-1.4 times = control cabinet power. The control cabinet must have protection measures such as phase loss, overload, and overcurrent short circuit. After the installation of the well is completed, start the test. The start-up time depends on the difference in motor power and is controlled between 10-25 seconds. The start-up time of high-power motors should be relatively long. Check whether the current is overloaded and whether the three-phase currents are balanced. Make a record. And feedback the manufacturer as the basis for the warranty.

9. Overload, overcurrent, phase loss, short circuit, and sensitivity debugging: This step is very important. Please ask the installer to debug carefully.

A. Overload and overcurrent debugging: Turn the current adjustment knob of the thermal relay slowly to a direction smaller than the actual working current, and rotate the scale a little at a time, with an interval of about 2-5 minutes, until the thermal relay action unit stops working. Then rotate the scale a little bit in the opposite direction.

B. Phase-loss sensitivity debugging: restart the unit and disconnect the fuse tube of the unit's knife switch one by one, so that the unit is in a two-phase electric working state. Observe whether the thermal relay can cut off the control power within 5 seconds.

C. Short circuit test: This step is usually protected by the air switch of the power supply system. Generally, no field test is required (more dangerous). The power supply system must be equipped with an air switch (the air switch model is preferably DW10 type, and DZ type is the second choice). Shanghai Submersible Pump Co., Ltd. is specialized in submersible sewage and sewage submersible pumps, sewage pumps, deep well pumps, water mixers, pipeline pumps and other submersible products. There is a complete set of water supply equipment without negative pressure, pressure stabilization, booster, sewage lifting device, and booster. Manufacturer of pumps and vertical multistage pumps. Products focus on practicality, innovation, environmental protection, economy and efficiency.

First, list the basic data:

1. Characteristics of the medium: medium name, specific gravity, viscosity, corrosiveness, toxicity, etc.

2. The diameter and content of solid particles contained in the medium (mass or volume percentage)

3. Medium temperature: ()

4.Required traffic

General industrial pumps can ignore the leakage in the pipeline system in the process flow, but must consider the impact on the flow when the process changes. If agricultural pumps use open channels to transport water, leakage and evaporation must also be considered.

5. Pressure: pressure drop (lift loss) in pressure piping system of suction tank pressure drainage tank

6. Pipeline system data (pipe diameter, length, type and number of pipe attachments, geometric elevation of suction tank to pressure tank, etc.) If necessary, the device characteristic curve should also be made. When designing and laying out the pipeline, pay attention to the following:

A. Reasonable selection of pipe diameters. Large pipe diameters at the same flow rate, small flow velocity, small resistance loss, but high prices. Small pipe diameters will result in a sharp increase in resistance losses, increase the head of the selected pump, increase the belt power, increase the cost, and increase operating costs. Therefore, it should be considered from a technical and economic perspective.

B. The maximum pressure that the discharge pipe and its pipe joints can withstand

C. The pipeline layout should be arranged as straight as possible to minimize the accessories in the pipeline and minimize

The submersible pump protection device is not sensitive and unreasonable in use, resulting in accidents caused by leakage.

Submersible pump refers to the pump used when the pump is directly placed in the water. The following points should be paid attention to during operation:

1. The pump casing must be protected to zero (ground) and installed in the switch box.

With the development of society and the increase of market demand, technological innovation becomes more and more important. China's stainless steel submersible pumps continue to innovate technology, and the application range is getting wider and wider, and people are paying more and more attention.

With the continuous development of the country, the national income continues to increase. Products made of stainless steel have been slowly introduced into industrial applications because of their long service life, non-rust, cleanliness, and environmental protection. Stainless steel submersible pumps are among the best.

With the sharp increase in the market, stainless steel submersible pumps are facing new technological innovations. Various companies are also rushing to launch their own killers, and constantly improve their R & D teams. At the same time, they have also gone abroad to learn their technology from advanced countries in the world, and related core production technologies, in order to improve their market competitiveness. Competitiveness.

The emergence of stainless steel submersible pumps proposed timely solutions to some problems in the use of water pumps. Compared with traditional iron water pumps, stainless steel pumps are receiving widespread attention due to their special advantages.

The advantages of stainless steel submersible pumps are: materials are safe and hygienic, not easy to deteriorate; long service life, not easy to rust; cost-effective, durable; green and environmentally friendly, 100% recycling can be realized.

Pump products represented by stainless steel submersible pumps are leading the entire pump industry continuously, and the raw material market driven by this, new types of stainless steel materials are constantly coming out. The continuous improvement of various patented technologies and specifications are constantly driving the entire industry chain towards a higher, more orderly goal.At the same time, we also look forward to the pump products led by stainless steel sewage pumps to go abroad and make more progress in the world. The pride of Made in China on the big stage.

In the current era, environmental protection has become a hot topic. I believe that with the continuous innovation of technology, stainless steel submersible pumps will have better development in the future.

1. Replace the lubricating oil: Open the oil hole screws inside the sealing chamber and the motor, and release all the lubricating oil in the sealing chamber and the motor. Replace the new oil to ensure the normal operation of the lubrication system.

2. Check the wearing parts: The impeller, retaining ring, shaft sleeve and bearing seat of the submersible pump are wearing parts. First remove the pump part and check whether the wearing parts are intact. Do not use damaged or unqualified parts.

3. Dismantle the pump casing to prevent rusting: Before using in spring, the top pump casing should be disassembled, and the impeller should be turned on and turned on to prevent the parts from rusting and failing to start normally and burning the motor. This maintenance is particularly important for water-filled motors.

4. Drying motor: Use a 500 megohmmeter to measure the insulation resistance between the windings and the casing of the submersible pump. If the resistance is less than 0.5 megohms, the motor water should be driven out. The drying methods include: external drying method, current drying method, and combined drying method performed simultaneously. The external drying method is to use an external heat source for processing. Common measures include: blowing hot air: using a blower of an electric heater (a small submersible pump for agricultural use can use a hair dryer) to blow hot air to achieve the purpose of drying; bulb baking: in In a closed box, several 200-watt light bulbs are used for baking. Note that the baking temperature should not be too high, it should be controlled below 125 ; current drying: the three-phase winding of the motor can be connected in series or in parallel according to the impedance of the submersible pump and the size of the power supply, and then connected to a variable resistor to adjust the amount of current It is about 60% of the rated current value.

5. Ensuring sealing: Agricultural submersible pumps have very strict requirements for sealing. When changing the lubricating oil in the sealed chamber, if the oil is turbid and the water content is high, the entire box or sealing ring must be replaced or replaced to ensure its seal. Good performance.

6, check the bearings: check the upper and lower bearings of the motor part, if found to be worn or the gap is too large, you must replace the new bearings in a timely manner, "sick" is strictly prohibited to use. The inspection method is as follows: if the motor is running, a "click" sound is generated, and the period is proportional to the rotation speed, and it is laborious to rotate the rotor by hand, it is a bit astringent or tearing on the bearing raceway; if the bearing is intermittent, There is an indeterminate dead point when the rotor is turned by hand. Generally, the ball frame is damaged, the inner ring is broken, or the ball is broken. In the above situation, the bearing must be replaced to avoid further damage.

7. Ensure bearing lubrication: For water-filled submersible pumps, check and replace the skeleton oil seal and lithium-based grease in the bearing chamber of the upper and lower end covers. To ensure that the bearings work in a good lubrication state for a long time.