Thread Content
The fluoroplastic magnetic pump is a new product that applies the operating principle of permanent-magnet couplings to centrifugal pumps. It features a rational design and advanced manufacturing techniques, as well as full sealing, no leakage, and corrosion resistance. Next, I will discuss the troubleshooting of common faults in fluoroplastic magnetic pumps. 1. Pump shaft damage. The pump shaft of the fluoroplastic magnetic pump is made of 99% alumina ceramic. The main factor causing pump shaft failure is the twisting of the shaft due to dry operation of the bearings as a result of the pump’s operation. When removing the pump, it can be seen that the bearings are worn out. The main method to prevent pump failure is to reduce the no-load operation of magnetic pumps. II. Bearing damage. The materials used in fluoroplastic magnetic pumps are made of high-density carbon. If the pump is turned off or there are impurities in the pump, the bearings will be damaged. If the coaxiality between the inner magnetic rotor and the outer magnetic rotor of the cylindrical coupling cannot be properly maintained, it will directly affect the lifespan of the bearings. III. The head of the fluoroplastic magnetic pump is insufficient. The factors causing this obstacle are: gas in the liquid being transported, damaged impellers, insufficient rotational speed, too high density of the transmission medium, and excessive pump flow rate. IV. Insufficient flow rate in fluoroplastic magnetic pumps. The main factors causing insufficient pump flow are: damaged impeller, insufficient speed, excessive pump head, and debris in the pipes. V. The fluoroplastic magnetic pump fails to deliver the medium. Pumps cannot prevent the medium from becoming an obstacle that often arises with pumps, and there are many factors involved. First, check whether the pump’s suction line is leaking. Check whether the gas in the intake tube has been discharged. Is the dielectric material in the fluoroplastic magnetic pump suitable? If there are any debris in the suction pipe, check the pump. It does not reverse, and especially after replacing the motor or repairing the power cable, it is also necessary to check whether the suction height of the pump is too high. If the above checks still cannot resolve the issue, the pump can be disassembled to check whether the pump shaft is damaged. It is also necessary to check whether the moving ring and stationary ring of the pump are in good condition, as well as whether the entire rotor can move slightly. If axial displacement is difficult, please check whether the carbon bearing is connected too tightly to the pump shaft. It is worth noting that fluoroplastic magnetic pumps do not require frequent repairs; attention should be paid to ensuring that the magnetic coupler is operated correctly. Bearings, internal magnetic rotors, and spacers generate heat during operation, which leads to an increase in operating temperature; this reduces the transmission power. On the other hand, it poses a challenge when pumping volatile substances. As the temperature increases, the power transmitted by the magnet follows a continuously decreasing curve. Generally, below the operating limit temperature of the magnet, the decrease in transmission efficiency is reversible, whereas above this limit temperature it is irreversible, that is, the magnet needs to be cooled. After that, the lost transmission efficiency can no longer be restored. Under special conditions, when the magnetically driven coupling slips out, the eddy current heat in the gasket will increase sharply, causing the temperature to rise rapidly. If not resolved in time, the magnet will lose its magnetism, rendering the magnetic drive coupling ineffective. Therefore, magnetic drive pumps should be designed with a reliable cooling system. For liquids that are difficult to evaporate, the cooling circulation system typically starts from the impeller outlet. For liquids containing solid or ferromagnetic impurities, please refer to filtration. For high-temperature liquids, refer to the cooling procedures to ensure that the magnetically driven coupling does not exceed its operating limit temperature.