Characteristics of submersible pump for well use
1, motor, water pump, diving operation, safe and reliable.
2. There are no special requirements for well pipes and risers (i.e. steel pipe wells, grey pipe wells and dirt wells). ).
3. The installation, use and maintenance are convenient and simple, occupying a small area, and there is no need to build a pump room.
Simple structure, saving raw materials.
4. Whether the use conditions and management of submersible pump are appropriate is directly related to its service life. The magnetic suspension submersible pump has achieved a major breakthrough in the field of submersible pumps in the world, and effectively solved various disadvantages of traditional submersible pumps, such as low conversion efficiency, large power consumption, limited lift, fragile bearings and frequent maintenance. Widely used in water supply and drainage of industrial and mining enterprises, farmland irrigation and water supply in plateau and mountainous areas.
Magnetic suspension submersible pump has changed the manufacturing process of submersible pump with its unique patented technology, and the conversion efficiency has reached a shocking new level, creating huge energy-saving and consumption-reducing benefits.
The magnetic suspension submersible pump has solved the axial force problem that restricts the development of submersible pump field in the world, and the head of submersible pump has been improved in a breakthrough way, filling the market gap of ultra-high head (single head is designed to be kilometers) and ultra-large flow (high load) submersible pump; The lift and flow curves tend to be flat. Its conversion efficiency and maximum lift of single machine are in the leading position in the world.
Magnetic levitation submersible pump is a new generation of submersible pump, which realizes vertical shaft magnetic levitation (maintaining high efficiency under different working conditions), does not wear, prolongs the service time and maintenance period by several times, saves frequent regular maintenance work, can run for tens of thousands of hours continuously, and saves maintenance and maintenance costs. Product introduction
WQ series submersible sewage pump is successfully developed on the basis of digesting and absorbing the advanced technology of similar foreign products. It has the advantages of high efficiency, anti-winding, non-blocking, automatic coupling, high reliability and automatic control, and has unique functions in discharging solid particles and long fiber garbage.
The discharge diameter of this series of pumps is 50∽600mm, the flow rate is 10 ~ 7000m3 /h, the lift is 5∽60m, the power is 1.5~3 15KW, and the diameter of solid particles passing through is 20 ~/kloc-.
Uses and characteristics
WQ series submersible sewage pumps are mainly used in municipal engineering, industry, hospitals, buildings, hotels, restaurants and other industries. It is used to discharge sludge, wastewater and municipal domestic sewage containing solids and various long fibers (including corrosive and erosive media).
WQ series submersible sewage pumps are small in size, compact in structure and high in efficiency. They can automatically control the water level according to the user's requirements, and are equipped with automatic protection devices and control cabinets, as well as an automatic installation system with double guide rails.
Conditions of use
1, three-phase AC power supply with motor rated voltage of 380V and frequency of 50HZ.
2. The temperature of the conveying medium shall not exceed 40℃
3. The PH value of the liquid medium is 4- 10.
4. The volume ratio of solids in the conveying medium is less than 2%.
5. The density of conveying medium is less than 1.2× 103Kg/ m3.
design feature
WQ series submersible sewage pump is compact in structure and equipped with various status display and protection devices, which makes the pump run safely and reliably.
1, the unique cable sealing design eliminates the hidden danger of cable leakage.
2. The stator adopts class F insulation and is equipped with thermal protection elements.
3. The pumps above18.5 kW are automatically cooled by external circulating water to ensure the safe operation of electric pumps at the lowest water level.
4. A floating switch is installed at the bottom of the motor cavity to monitor the mechanical seal at the motor side.
5. The oil-water probe is installed at the upper end of the oil chamber of the pump and motor to monitor the mechanical seal on the pump side. If there is water leakage, the control system will alarm for protection.
6. Corrugated pipe double-ended mechanical seal, made of tungsten carbide, silicon carbide and cemented carbide, prevents water from entering the motor and ensures the safe and reliable operation of the motor.
7. The auxiliary impeller is used to balance the external pressure of the mechanical seal and prevent water from entering the oil chamber, thus prolonging the service life of the electric pump.
8. The impeller has a unique design, and the large flow passage can pass through long fibers and dirt, so it has strong anti-clogging, anti-winding and over-current ability.
9. A replaceable wear sleeve is installed between the impeller and the lower end of the volute to keep the pump running at the best efficiency.
Impeller design characteristics
In order to ensure the smooth passage of sewage, it is necessary to increase the width of the impeller flow surface. For large pumps, double blades and triple blades can be used; For small pumps, single (double) flow channels are used, which are similar to elbows with the same cross section and have very good flow characteristics. Avoid blockage and entanglement that may be caused by low water flow. This unique impeller wheel design, combined with a reasonable volute chamber, allows the free passage of paper, textiles, garbage bags and other substances in sewage. The impeller is dynamically and statically balanced, so that the pump will not vibrate during no-load trial operation and load.
Installation and use
The submersible sewage pump is coaxial with the water pump, with compact structure, high efficiency, convenient installation and maintenance, economical operation and strong adaptability. Its installation methods include mobile installation and fixed installation, and fixed installation is divided into automatic coupling installation and fixed dry installation. Mobile installation is also called free installation.