The principle and characteristics of the fluoroplastic magnetic pump and the common malfunction treatment.
The magnetic force pump of fluoroplastics is a kind of chemical process pump which uses the modern magnetics principle and uses permanent magnets to realize non-contact and indirect transmission. When the motor drives the outer rotor (i.e. outer magnet) assembly rotates, the magnetic field through the magnetic field lines through the isolation sleeve drives the inner rotor (i.e. the magnet assembly) and synchronous rotating impeller, the medium completely enclosed in static Isolation Kit, so as to achieve the purpose of pumping medium without leakage, completely solve the seal mechanical pump the leak is a new type of industrial pump seal, no leakage, no pollution. Fluoroplastic magnetic pump is a way to eliminate running, running, dropping and leaking in chemical process, eliminate environmental pollution, create a leak free workshop, and achieve ideal safety and civilized production.
Working principle: fluorine plastic magnetic pump consists of a pump, magnetic actuators, motors of three parts. Key components of magnetic actuator by the external magnetic rotor sleeve, inner magnetic rotor and non magnetic components. When the motor drives the external magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic material, drive the inner magnetic rotor connected with the impeller to rotate synchronously, realize the non-contact transmission of power, and transform the dynamic seal into a static seal. As the shaft, the rotor is within a magnetic pump, isolated sets of completely closed to completely solve the; leakage; problem, remove the oil refining chemical industry flammable, explosive, toxic and harmful media through the pump seal leakage security risks, effectively ensure the workers health and safety of.
Product features: the structure design of fluorine plastic magnetic pump magnetic pump not only has compact structure, beautiful appearance, small size, low noise, reliable operation, and the over-current components are using the world's most outstanding corrosion resistance of &ldquo plastic; Wang ” (fluorine plastic manufacturing), using a special set of isolation the mechanical properties of materials, with high strength, eliminate magnetic eddy current common magnetic pump. Therefore, the fluoroplastic magnetic pump can transport any corrosive medium such as strong (strong) acid, alkali, oxidizing agent and so on without damage.
What if the magnetic pump has a problem?
The following is the solution.
(1) the axis of the magnetic pump is broken. CQB magnetic pump pump shaft material used is 99% alumina ceramic, the main reason is because the pump shaft is broken, air pump running, dry grinding and bearing shaft is broken. When the pump is disassembled, it can be seen that the main way to prevent the pump from being worn seriously is to avoid the air transfer of the pump.
(2) damage to the bearing of magnetic pump. CQB magnetic bearing pump bearing material is high density carbon, if the pump water or the pump has impurities, it will cause the damage of the bearing. The coaxiality between the inner and outer magnetic rotors of a cylindrical coupling can not be guaranteed, but it will also directly affect the life of the bearing.
(3) the magnetic pump can not make the liquid. Magnetic pump can not produce liquid is the most likely failure of the pump, and its reasons are more. Should first check whether the pump suction line leak, check whether the air suction tube discharge, magnetic fluid volume infusion pump is adequate, suction tube is blocked with debris, the pump should also check whether the reverse (especially in another motor or a power line after the overhaul), should also be note that the pump suction height is too high. If the above check can not be solved, the pump can be disassembled and checked to see if the pump shaft is broken. The check whether the pump's moving ring and static ring are intact, and whether the whole rotor can move a little axially. If the axial movement is difficult, it is possible to check whether the carbon bearing is too close to the pump shaft.
It is worth noting that the magnetic pump has been repaired several times and can not be found out, and should pay attention to the normal work of the magnetic coupling. Bearings, internal magnetic rotors and spacers will generate heat during operation. This will increase the working temperature and decrease the transmission power on the one hand. On the other hand, it will cause great trouble to the magnetic pump for transporting easily vaporized liquids. Magnetic transmission power with increasing temperature is a continuous decline in the curve, usually working in the magnet temperature limit below the decline of its transmission capacity is reversible, but above the limit temperature is not reversible, i.e. magnetic cooling after the loss of transmission capacity can not be restored.
Under special circumstances, when the magnetic coupling appears slipping (out of step), the swirl heat will increase sharply and the temperature will rise sharply. If it is not processed in time, it will cause the demagnetization of magnetic steel and the failure of magnetic coupling.
So a magnetic pump should be designed to be a reliable cooling system. To not easy evaporation medium, the cooling system in general by the impeller outlet or the pump exit fluid flow, the bearing and magnetic drive part back to the suction population, easy evaporation medium, should increase the heat exchanger or tank flow leads to the outside of the pump, avoid heat back to the suction inlet, have solid impurities or ferromagnetic impurities should be considered medium filter, medium to high temperature, you should consider cooling, to ensure that the magnetic coupling does not exceed the working temperature limit. When considering whether the speed is enough, it is necessary to check whether the speed of the motor itself is normal or not. It can be measured by tachometer. When the motor speed is normal, we can consider whether there will be slipping of magnetic coupling.
(4) lack of lift. The causes of this kind of failure are: air in the conveying medium, the damage of the impeller, the insufficient speed, the excessive proportion of the conveying liquid and the large flow of the flow.
(5) insufficient flow. The main causes of insufficient flow are the damage of the impeller, the low speed, the high lift, and the clogging of the pipe.
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