When the medium is water or water-based liquid, the temperature rise in the annulus area can be maintained at 3-5°C; when the medium is hydrocarbon or oil, the temperature rise in the annulus area can be maintained at 5-8°C. Since the sliding bearing of the magnetic pump is lubricated by the conveyed medium, different materials should be used to make the bearings according to different media and operating conditions. 2. Sliding bearing The materials of sliding bearing of magnetic pump include impregnated graphite, filled PTFE, engineering ceramics, etc.

Demagnetization will not occur when the same poles are close, so it is a good source of magnetic field. Controlling the flow of cooling lubricating fluid When the pump is running, a small amount of liquid must be used to wash Submersible Sewage Pumps Manufacturers and cool the annular gap area between the inner magnetic rotor and the isolating sleeve and the friction pair of the sliding bearing. 4. The isolation sleeve is made of non-metallic materials with high resistivity and high strength, which is very effective in reducing eddy current.

Protection measures When the driven part of the magnetic drive is running under overload or the rotor is stuck, the main and driven parts of the magnetic drive will automatically slip off to protect the pump. The annular gap area between the inner magnetic rotor and the isolating sleeve generates high heat due to eddy currents. When the isolating sleeve adopts a metal isolating sleeve, the isolating sleeve is in a sinusoidal alteating magnetic field,

and eddy currents are induced in the cross section perpendicular to the direction of the magnetic force and converted into heat. 2. Permanent magnets made of rare earth permanent magnet materials have a wide operating temperature range (-45℃~400℃), high coercivity, and good anisotropy in the direction of the magnetic field. The key component of the magnetic drive consists of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve

Only after the pipe diameter increases, the water flow resistance will decrease, and the flow will increase, and the power consumption will also increase appropriately. The size of the liquid pressure is only related to the height of the head, and has nothing to do with the cross-sectional area of ​​the water pipe.

Therefore, in order to prevent the motor from overloading, it is generally required that the actual pumping head of the pump should not be less than 60% of the calibrated head. ②When the water inlet depth of the water inlet pipe is not enough, this will cause vortexes on the water surface around the water inlet pipe, which will affect the water inlet and reduce the water output. 8.) to reduce the flow and prevent the motor from overloading. If there is dirt such as mud and sand at the bottom of the pool, and the distance between the water inlet and the bottom of the pool is less than 1. If the outlet is above the normal water level of the outlet pool, although the pump lift is increased,

the flow rate is reduced. 2. There are many elbows on the inlet pipe of the pipeline centrifugal pump If more elbows are used on the inlet pipe, it will increase the local water flow resistance. Some operators think that blocking the water outlet and forcibly reducing the flow will increase the motor load. Otherwise, the air will gather, the water output will be reduced or the water will not be able to be pumped, and there will be impact noises.

But as long as Submersible Drainage Pumps Manufacturers is within the rated head range, the pump can work normally no matter how the pipe diameter is increased, and it can also reduce pipeline losses and improve pump efficiency. If installed in this way, the valve cannot close by itself, causing water leakage. The outlet pipe of a regular high-power centrifugal pump drainage and irrigation unit is equipped with a gate valve. 3. When installing the water inlet pipe, the horizontal section is horizontal or upward. In order to reduce the motor load when the unit starts, the gate valve should be closed first and then gradually opened after the motor starts. The smaller the pipe diameter, the greater the resistance, and the greater the loss head, which leads to a decrease in pump efficiency

 The pump and the motor are directly connected coaxially, which is a mechatronics product with compact structure and stable performance. 2. The design of the anti-clogging hydraulic components of the large flow channel greatly improves the dirt passing capacity. It can effectively pass 5 times the diameter of the pump diameter and the solid particles with a diameter of about 50% of the pump diameter. 3. Reasonable design, reasonable supporting motor, high efficiency, low noise and significant energy saving effect. 4.

The mechanical seal adopts hard and wear-resistant tungsten carbide, which is durable and wear-resistant, and can make the pump safe and continuous operation for more than 8000 hours. 5. The pump is a vertical structure, the center line of the inlet and outlet are on the same horizontal line, and the specifications of the inlet and outlet flanges are the same, so installation and disassembly are very convenient. 6. The area is small, and there is no need to build a machine room, which can save a lot of infrastructure costs; add a protective cover to the fan end of the motor, and the whole machine can be placed outdoors.

The main purpose of the pipeline sewage pump: 1. The discharge of seriously polluted wastewater from factories and commercial units. 2. Discharge system of urban sewage treatment plant. 3. Sewage drainage system in residential area. 4. Sewage discharge from hospitals, hotels, and high-rise buildings. 5.

Drainage Surface Pumps Manufacturers for subways, basements, and civil air defense systems. 6. Discharge of thin mud in municipal engineering and construction sites. 7. Water supply system of water company and factory. 8. Sewage discharge from farms or rural biogas digesters and farmland irrigation. 9. Attached machines for prospecting mines and water treatment equipment. 10. Applicable to water supply and drainage of water conservancy projects.