Transmission of pumps and fans
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Generally, pumps are driven through couplings, while fans are driven by belts. What is the reason behind this? Is the required speed of the fan low, or are there other reasons? Thank you for sharing your thoughts
Belts have a lower transmission efficiency and are not suitable for high-power applications; mechanical specialists are better aware of this.
Fans can also be driven by couplings; it’s just a matter of selection and cost, with belt drives being cheaper
High-speed motors combined with belt drives offer good cost-performance; the power of the fans is generally low, usually below 100 kilowatts, making belts an ideal choice as they can transmit torque as well as reduce speed. The transmission efficiency of belts is only 1-2% lower than that of couplings. Other configurations such as variable-speed gearboxes and low-speed motors represent higher-end options.
This is a question related to mechanical rotation; it depends on the specific situation. Generally, pumps are driven by belts, and these are usually low-speed pumps. There are also pumps that use couplings, direct connections, or magnetic drive. The same is true for fans – there are various types of them. Type A fans use direct connections, Type F fans employ couplings, while BC fans use belts.
There are generally three common types of connections for transmission systems: gears, chains, and belts. Each has its own advantages and disadvantages, and the choice of connection method depends on the specific circumstances
Is it also related to the relative installation position of the motor?