Pump general corrosion resistance, high strength engineering plastics, corundum ceramics, stainless steel materials, with good corrosion resistance, can transport medium from pollution. CQB series of magnetic pumps are the anti chemicals used to transport liquid contact parts with fluoroplastic alloy. Fluoroplastic magnetic force pump, fluoroplastic alloy, thermoplastic superplasmally processed ultra high molecular weight polyfluoroethylene propylene and one or more other plastics blends can be filled with filler. Plastic alloys, such as super high molecular weight poly FEP Teflon and composition, 0.1% to 99.9% weight ratio, 99.9% to 0.1% weight ratio, dry milling or dry wet grinding ingredients. A variety of products are processed by hot pressing or cold pressure sintering, and the defects of cold flow and deformation of polytetrafluoroethylene can be overcome, and the service life can be extended. The bearings of the magnetic pump are immersed in the transmission medium, and the conveying medium is lubricated and cooled. The normal graphite fiber reinforced plastic of the bearing. Graphite is graphite, which has good self lubrication, corrosion resistance, low friction coefficient and wide application range. However, graphite is fragile, and low strength is sensitive to bending and partial overload axis. Special attention should be paid to it. Steel body, porous bronze is the three layer composite bearing's compressive strength of the plastic surface layer, the middle layer is high, the friction coefficient is small, the size is stable, the silence and damping is applied in recent years.
Magnetic coupling magnetic coupling realizes the non - contact transmission torque to reach the key component without leakage. Generally, the two forms of disc and cylinder. The disc coupling is composed of two face-to-face ring magnets and sleeves. The existence of the axial force between the two ring magnets, especially in large power and large axial force, is hard to overcome, and is generally not used. Cylindrical coupling by the external magnetic rotor, rotor and magnetic vibration (from) a set of 3 pieces, the external magnetic rotor is connected with the motor, and in the atmosphere, the magnetic rotor and the pump shaft are connected as a whole, the whole rotor installed in the pump shell and the transmission medium sleeve and immersion, sleeve inner and outer rotor and fixed in the pump shell, magnetic pump shell and sleeve in hermetically communicated with the indoor form. The cylindrical tube is closely arranged in the circumference direction of the circular cylinder and the external magnetic rotor magnet, the magnetic rotor, the "combination" of the push-pull circuit. At present, magnetic materials can be applied to the selection of magnetic pumps. The shirts, drilling SmCo5 (1:5), SM (cobalt, copper, iron, zirconium) 7.4 (2:17), NdFeB and so on, are commonly used in magnetic materials. Rare earth permanent magnet material is the most preferred fluoroplastics self priming pump, the most powerful NdFeB NdFeB, the maximum energy product is greater than 28 104t / m, neicha coercivity exceeds 1120ka / m, and is popular. However, its working temperature should not exceed 120 degrees and high temperature, and it can choose the magnetic field energy of 192 Sm / Co of 192 Cu / Fe, and its working temperature can reach 300 degrees. Cylindrical couplings should pay attention to the internal and external design, manufacture, and assemble the position between the magnetic rotor, otherwise the radial force will be produced. The transfer of radial force not only affects the torque, but also directly affects the life of the bearing. When it is serious, the magnetic coupling can not work. The key to the radial force is to ensure the internal and external necessary coaxial magnetic rotors. In addition, the assembly and disassembly of magnetic pump, there should be a special fixture and tools, fluorine plastic centrifugal pump to protect personnel and part of Cape abrasion. The work of the isolating sleeve in the magnetic pump is caused by the alternating magnetic field and the eddy current. This vortex, the power consumption of the shaft, reduces the transmission efficiency. On the other hand, it is a heat transfer medium, and the temperature of the circulating medium is increased. So the design of the set must be paid attention to the selection of material and geometry, especially for the conveyance of vaporized liquid. For a given parameter and required pump, the main factor of the loss power of the P bushing can be expressed as P&prop, D2 / P&sigma, where D is the resistivity of the P diameter, and the resistivity of the material. As allowable tensile stress. It can be seen that the main way to reduce the loss of eddy current is to use high resistivity, high strength materials, and to reduce the diameter of the interlace as much as possible.
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