Today we will explain to you the working principle of the submersible axial flow pump

1.QZ series submersible axial flow pump is specially designed for large flow, low head occasions. Submersible axial flow pumps generally use a head of less than 10 meters. This product is an alternative to the traditional axial flow pump, motor and pump constitute a whole, submerged in water operation, with a series of advantages that the traditional unit can not compare

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2.In agriculture, used for irrigation and drainage: used in municipal drainage rainwater, mild sewage; Used in industry for the supply of water, cooling water and raw water; Used in water conservancy for water transfer projects. Suitable for transporting clean water or mild sewage. The nominal outlet caliber of the pump is 350, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800mm and so on.

3.Because the motor and the pump constitute one, the site does not need to carry out labor, time consuming, complex axis alignment assembly procedures, the installation is very convenient and fast, so you can not reserve the standby pump position, the standby pump is stored in the warehouse, saving the investment of the pump station into the pool. Due to submersible operation, it can greatly simplify the pumping station and building structure engineering, reduce the installation area, and save 30-40% of the total cost of the pumping station.

4. The pump runs in water, the water flow from the motor around, low noise, motor cooling conditions are good. It can be built as an underground pumping station to maintain the environmental features of the ground. The use of submersible electric pump is the most thorough method to solve the problem of building pump stations and flood control in the areas along rivers and lakes where the water level fluctuates greatly, eliminating the long axis between the machine and pump, and improving the safety and reliability of operation.

5.The impeller is converted by the current hydraulic model, with excellent performance, stability and maturity. Select a smaller nD value, good anti-cavitation performance, to ensure smooth operation. Two sets of independent mechanical seals isolate the motor from the pump seal; Installed in series up and down to provide multiple insurance and improve reliability. The oil chamber is lubricated and sealed by oil cooling, which acts as an isolation between the motor and the conveyed medium. The retained volume can slow the pressure rise in the oil chamber.

6. The unit starts the moment, the motor starting torque of the reaction torque, often make the unit as a whole to rotate in the opposite direction, anti-rotation device can solve this problem. Bearings are rolling bearings that can withstand all axial and radial loads and are completely separate from the medium transported by the pump. The pump is coaxial with the motor, compact structure, the shaft extension is shortened as much as possible, the deflection is reduced from the design, the vibration is small during movement, and the sealing and bearing life is longer.

7. High-performance squirrel cage induction motor, especially designed and manufactured for submersible pump, in line with GB755 standard. The insulation level is F, and the working temperature can reach 135℃. Depending on the power, 380V, 660V, 3KV, 6KV, 10KV and other voltage levels can be used. The high voltage motor adopts two VPI insulation processes to ensure reliable insulation. The motor housing directly transfers heat to the surrounding medium, and the heat is carried away by the surrounding water flow. The high power and high voltage motor adopts the patented technology of internal air duct cooling, which makes the three-phase winding temperature rise low and the temperature field distribution uniform.

8. The submersible pump is equipped with multiple protection devices, which can lead the lead to the electric control box. The protection devices are: overload, lack of phase, leakage, overtemperature, humidity, immersion protection, etc., using the installation form with closed inlet channel.an isolation between the motor and the conveyed medium. The retained volume can slow the pressure rise in the oil chamber.