Self-priming magnetic drive pump structure description
[Pumps Asia] self-priming magnetic drive pump key components Magnetic drive by the outer rotor, the inner rotor and non-magnetic isolation sleeve composition, then the pump the other layout is what is the composition? With this question Next, the structure of a self-priming magnetic drive pump will be described. Self-priming magnetic drive pump structure description 1. Permanent magnet permanent magnet made of rare earth permanent magnet material Wide operating temperature range (-45-400 ℃), high coercivity, magnetic field direction has a good anisotropy, in the It is a good magnetic field source when the same pole is close to each other. 2. Isolation Sleeve When the metal isolating sleeve is used, the isolating sleeve is in a sinusoidal alternating magnetic field, and in a cross section perpendicular to the magnetic flux direction Induced eddy current and converted into heat. 3. Cooling fluid flow control pump operation, you must use a small amount of liquid on the inner rotor and the isolator between the ring gap region and the sliding friction bearing pair was washed and cooled. Coolant flow is typically 2% to 3% of the pump design flow, and the annulus area between the inner magnet rotor and the isolation sleeve generates high heat due to eddy currents. When the cooling fluid is not enough or flushing hole poor, blocked, it will lead to the medium temperature is higher than the permanent magnet operating temperature, the magnetic rotor gradually lost magnetism, the magnetic actuator failure. When the medium is water or water-based liquid, the annulus area can be maintained at 3-5 ℃. When the medium is hydrocarbon or oil, the annulus area can be maintained at 5-8 ℃. 4. Sliding bearing self-priming magnetic drive pump sliding bearing materials impregnated graphite, filled with PTFE, engineering ceramics. As the engineering ceramics have good heat resistance, corrosion resistance, abrasion resistance, so the use of magnetic bearings multi-purpose sliding bearing made of engineering ceramics. As the engineering ceramics are very brittle and the expansion coefficient is small, so the bearing clearance must not be too small, in order to avoid the occurrence of axial accidents. In addition, the self-priming magnetic pump driven by the sliding bearing lubricated by the media, it should be based on different media and the use of conditions, the use of different materials made of bearings. Read more: China Building Water Exhibition Pump Valve Tube Fittings Exhibition Water Expo Xiamen Maritime Exhibition Internet + Forum Yiwu Expo Industry Interconnection (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat:) http://beng.liuti.cn/ (service hotline:)
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