Common mini pump advantages and disadvantages

There are many types of miniature pump in the design of equipment, to understand the advantages and disadvantages of the pump, select the appropriate type, in order to avoid the trouble arising in the course of use. Miniature pump First, the exchange of micro AC pump AC pump commutation is through the 50HZ frequency of the city, its speed is low, there is no exchange of electronic components pump can be high temperature, the same lift exchange pump volume and power DC brushless pump 5-10 times. Advantages: easy to use electricity, manufacturers are more, cheaper prices, longer life expectancy. Disadvantages: volume, noise, high weight, inconvenient to carry, high degree of protection requirements, the use of improper electric shock may occur. Second, brushless DC motor pump motor Brushless DC pump is the use of brushless DC motor with the composition of the impeller. Motor shaft and impeller together, there is a gap between the stator and rotor pump, the use of water for a long time will penetrate into the motor to increase the possibility of motor burn out. Advantages: Brushless DC motor has been standardized (such as ordinary fans or DVD brushless motor), a large number of specialized manufacturers, lower cost, high efficiency. Disadvantages: can not be applied to the size and direction of the load are constantly changing (similar to the construction site ramming machines, industrial applications such as motor requirements). Grade is not high, prone to failure. Third, the brushless DC magnetic pump Brushless DC magnetic pump with electronic components for the commutation, without the use of carbon brush for the conversion, the use of high-performance wear-resistant ceramic shaft and ceramic sleeve, the sleeve through the injection and the magnet into the whole will avoid The wear and tear, so brushless DC magnetic pump life has greatly enhanced. Magnetic isolation pump stator part and the rotor part of the complete isolation, the stator and the circuit board part of epoxy potting, 100% waterproof, the rotor part of the permanent magnet, the pump body with environmentally friendly materials, low noise, small size, performance stable. Various parameters can be adjusted through the stator windings and can be operated at wide voltage. Advantages: long life, low noise up to 35dB below. The stator and circuit board of the motor are encapsulated with epoxy resin and completely isolated from the rotor. They can be installed underwater and fully waterproof. The axis of the pump is made of high-performance ceramic shaft with high precision and good shock resistance. Disadvantages: (1) high cost. (2) can not run long-term water shortage, dry turn, idling easily burn. (3) There is no self-absorption ability, you must dive or install on the page. Fourth, the DC brush diaphragm pump work, the coil and commutator rotation, magnet and brush does not turn, the alternating current direction of the coil is rotated with the motor commutator and brush to complete. Because a power rotor began to rotate, it will wear carbon brushes, these two forms of low-grade products, the general operation of the brush up to hundreds of hours on the finished, there will be failure. The high-end products, because carbon brush technology, copper and other key technologies excellent life expectancy in more than a few thousand hours. Such as foreign high-end pumps, some domestic specializes in high-end micro-pump manufacturers, most of which is the case. However, the cost of a lot more low-grade. Advantages: (1) torque (power), the same size brush motor and brushless motor, brush pressure (head) is much larger than the brushless. (2) high-end brush motor flow can be much larger than the brushless motor. Disadvantages: (1) carbon brushes have a certain life expectancy, can not reach the life of tens of thousands of hours like a brushless motor; even the high-end is also some gaps. But can be used for non-continuous 24-hour operation occasions. (2) high-end high cost; cheap low-end brushed pumps and shorter life expectancy, only a few hundred hours. (3) The liquid can not contain particles and other impurities, can not contain oil; Further reading: Pumps Valves Tube Fittings Exhibition Water Expo Xiamen Maritime Exhibition Internet + Forum Yiwu Expo Fair Mold Top Ten Brands 2016 Exhibition Information Industry Internet (Xiamen ) Technology Co., Ltd. author: Asian pumps network editor: Yao Xiaoxia (QQ / micro letter:) http://beng.liuti.cn/ (service hotline:)

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