Can be used in computer water-cooling systems, solar fountains, desktop fountains, handicrafts, coffee makers, drinking fountains, tea makers, wine pourers, soilless cultivation, showers, gynecological washers, teeth cleaners, water heater pressurization, plumbing mattresses, hot water circulation, swimming pool water circulation filtration, foot washing and surfing massage basins, surfing and massaging bathtubs, automobile cooling circulatory systems, gasoline dispensers, humidifiers, air-conditioning machines, washing machines Medical equipment, cooling system, sanitary products. Mainly used in dishwashers, coffee pots, water dispensers, water pump shell can be selected from special food-grade high-temperature resistant materials, the pump can work continuously above 10
degrees. Can reach the food grade. Magnetic pump is a through the magnetic drive to realize the contactless torque transfer so as to replace the dynamic seal with static sealing, so that the pump to achieve a completely leak-free. Due to the pump shaft, the inner magnetic rotor is completely closed by the pump body, isolation sleeve, thus completely solved the problem of "running, bubbling, dripping, leaking", eliminated the refining chemical industry flammable, explosive, toxic, harmful media through the pump seal leakage of the security risks, and vigorously ensure the physical and mental health of workers and safe production.
Compared with the motor type DC brushless water pump, the magnetic pump has the following advantages:
1. The pump shaft is sealed by the dynamic seal into a closed static seal, completely avoiding the leakage of media. It can be used on both land and water, and is completely waterproof.
2. No need for independent lubrication and cooling water, reducing energy consumption.
3. Small power consumption, high efficiency, and damping vibration damping effect, reducing the impact of motor vibration on the pump and pump cavitation vibration on the motor.
4. The rotor will slip on the ceramic shaft when overloaded, which has a protective effect on the motor and pump. 1. Prevent particles from entering
(1) do not allow ferromagnetic impurities, particles into the magnetic actuator and bearing friction vice;
(2) after conveying the easy crystallization or precipitation of the medium should be flushed in a timely manner (after stopping the pump to the pump cavity filled with water, running 1min after discharging the clean), in order to ensure that the service life of the sliding bearings;
(3) conveying the medium containing solid particles When conveying medium containing solid particles, it should be filtered at the entrance of the pump flow pipe.
2. Prevent demagnetization
Should be operated under the specified temperature conditions, it is strictly prohibited to exceed the medium temperature. Magnetic pump isolation sleeve can be installed on the outer surface of the platinum resistance temperature sensor to detect the temperature rise in the ring gap area, so that the temperature exceeds the limit when the alarm or shutdown.
3. Prevent dry friction
Minimize idling time. (1) magnetic pump shaft breakage. CQB type magnetic pump pump shaft using the material is 99% alumina porcelain, the main reason for the pump shaft breakage is that, because the pump idling, bearing dry friction and the shaft twisted off. Disassemble the pump to check the bearing can be seen has been worn seriously to prevent the pump breaks the main way is to avoid the pump idling.
(2) magnetic pump bearing damage. CQB magnetic pump bearing material is high-density carbon, such as the pump water breakage or pump impurities, will cause bearing damage. Cylindrical coupling inside and outside the magnetic rotor coaxiality requirements between if not guaranteed, will also directly affect the bearing life.
(3) magnetic pump can not hit the liquid. Magnetic pump can not hit the liquid is the most likely failure of the pump, the reason is more. First of all, you should check the pump suction line whether there is a leakage place, check the suction pipe air is discharged, magnetic pump filling the amount of liquid is sufficient, suction pipe whether there is debris clogging, but also should check whether the pump is reversed (especially in the change of the motor or the power supply line after overhaul), you should also pay attention to the pump suction height is too high. Through the above check if still can not be solved, the pump can be disassembled to check to see if the pump shaft is broken, should also check the pump's dynamic ring, static ring is intact, the entire rotor can be a small amount of axial movement. If the axial movement is difficult, you can check whether the carbon bearing is too tightly combined with the pump shaft.
It is worth noting that the magnetic pump repaired a few times to find out the problem, should pay attention to the magnetic coupling is working properly. Bearings, the inner magnetic rotor and spacer in operation will produce heat, which will make the working temperature rise, on the one hand, the power transferred to decline, on the other hand, the delivery of easily vaporized liquids magnetic pump will produce great trouble. The power transferred by the magnet is a continuous decreasing curve with the increase of temperature. Usually, below the working limit temperature of the magnet, the decrease of its transferring ability is reversible, while above the limit temperature it is irreversible, i.e., after the magnet cools down, the lost transferring ability can never be recovered. Special circumstances in the magnetic coupling slip (out of step), the heat of the eddy current in the spacer will grow dramatically, the temperature rises sharply, if not handled in a timely manner, will cause the magnet steel demagnetization, so that the magnetic coupling failure. Therefore, the magnetic pump should be designed with a reliable cooling system. For the medium that is not easy to vaporize, the cooling circulation system is generally led by the impeller outlet or pump outlet of the liquid flow, through the bearings and the magnetic drive part of the suction population back to the suction population, for the medium that is easy to vaporize, the heat exchanger should be increased or the liquid flow should be led to the pump outside of the storage tank, to avoid the heat to return to the suction population, for the solid impurities or ferromagnetic impurities of the medium, filtration should be considered, and for high-temperature media, should be considered for cooling to ensure that the magnetic coupling does not exceed the operating Limit temperature.
When considering whether the rotational speed is enough, we should first check whether the rotational speed of the motor itself is normal, which can be measured by a tachometer, and in the case of normal rotational speed of the motor, we can consider whether there will be a slip of the magnetic coupling.
(4) Insufficient head. Causes of this failure are:air in the conveying medium, impeller damage, insufficient speed, the specific gravity of the conveyed liquid is too large, the flow rate is too large.
(5)Insufficient flow. The main reasons for insufficient flow are: impeller damage, speed is not enough, the head is too high, there are debris in the pipe clogging and so on.