Stainless steel magnetic pump by a pump, magnetic actuators, motors of three parts. Magnetic actuators key components from the outside magnetic rotor, an inner magnetic rotor and the magnetic isolation sleeve. When the motor drive outside the magnetic rotor, the magnetic field can penetrate the air gap and non-magnetic material, and the impeller drive connected for synchronous rotation within the magnetic rotor, to achieve non-contact power transmission, the dynamic seal into static seal. As the pump shaft, pump body within the magnetic rotor is completely closed, the isolation sleeve, thus completely solving the "run, run, drip, leak " problem, remove the oil refining chemical industry flammable, explosive, toxic, harmful medium through the pump seal leakage security risks, effectively ensure the employees' health and safety production. A magnetic pump, stainless steel works The N magnet (n is an even number ) are arranged according to the rule assembly in magnetic driver inside, outside the magnetic rotor, so that the magnet part of mutual form a complete coupling of magnetic system. When the inner, outer two poles in a very different relative, i.e. two poles displacement angleφ= 0, the magnetic system of lowest energy; when rotates to a homopolar relative, i.e. two poles displacement angleφ= 2 pi /n, the magnetic system of magnetic energy maximum. Remove the external force, the magnetic system of magnetic poles repel each other, magnetic magnets will revert to the lowest energy state. The magnet generates movement, drives the magnetic rotor. Two, structural characteristics The 1 permanent magnetBy rare earth permanent magnetic materials permanent magnet wide operating temperature range ( -45 - 400℃), high coercive force, the direction of the magnetic field with good anisotropy in homopolar is close to, can not occur when the demagnetization phenomenon, is a very good source of magnetic field. 2 isolation sleeveStainless steel magnetic pump in the metal isolation cover, the isolation sleeve in a sinusoidal alternating magnetic field perpendicular to the direction of the magnetic field, in the section on the induced eddy current and converted into heat. The expression for eddy current:. The Pe vortex flow; K - constant; N - pump rated speed; T magnetic transmission torque; F sleeve inner pressure; D sleeve bore; a resistivity of the material; and the tensile strength of the material. When the pump design, N, T working condition is given, to reduce eddy current only from F, D,, aspect and so on. Selection of high resistivity, high strength non metal material isolating sleeve, in reducing the eddy current effect is very obvious. 3 cooling lubricating liquid flow controlStainless steel magnetic pump when the pump is running, you must use a small amount of liquid on the inner magnetic rotor and the isolation between the sets of annulus area and sliding bearing friction pair for flushing cooling. The flow of coolant pump design flow is usually 2%-3%, internal magnetic rotor and the isolation sleeve between the annulus region due to eddy currents generate high heat. When the cooling lubricant inadequate or poor flushing holes, jam, will cause the medium temperature is higher than the operating temperature permanent magnets, the magnetic rotor gradually loses magnetism, the magnetic transmission failure. When the medium is water or water-based liquid, can make the annulus area temperature maintained at 3-5℃; when the medium is a hydrocarbon or oil, can make the annulus area temperature maintained at 5-8℃. The 4 sliding bearingStainless steel magnetic pump sliding bearing materials impregnated graphite, PTFE, engineering ceramics. As a result of the engineering ceramics have good heat resistance, corrosion resistance, friction resistance, so the stainless steel magnetic pump sliding bearing used in production of Engineering ceramics. As a result of the engineering ceramics is very crisp and the expansion coefficient is small, so the bearing clearance shall not be too small to hold shaft, so as to avoid the accident.Because the stainless steel magnetic pump to the sliding bearing lubrication delivery media, it should be according to different media and use condition, the choice of different materials produced bearings. 5 measures of protectionWhen the magnetic actuator of the driven parts in case of overload operation or rotor stuck, the magnetic actuator of the master, slave components will automatically slip, protect pump. The magnetic driver in an active permanent magnet on the rotor under the action of alternating magnetic field, will produce eddy loss, magnetic loss, resulting in permanent magnet temperature, magnetic transmission slip failure.