history
In the early years of the Eastern Han Dynasty, Nanyang Taishou Du Shi designed and built a hydraulic blower for the metallurgical foundry industry. It rotates the water wheel with water and converts the circular motion into a linear motion of the pull bell box through a series of crankshafts, connecting rods and reciprocating rod devices. It includes the powertrain, transmission and working systems, with the main features of a real machine. Moreover, the reverse of this operation procedure is the conversion of the linear reciprocating motion of the steam engine piston to the circular motion. Metallurgical skin sacs were first used in China's metallurgy, and there were four sacs in the Warring States Period. In the Han Dynasty, the "horse row", "steak" and even the water row of Du Shi. In the Song Dynasty, there was a wooden fan similar to an accordion. This is a bellows with automatic valves. Especially at the end of the Ming Dynasty, piston blowers have emerged.
The metallurgical blower appeared in the second century AD and was also one of the ancient Chinese inventions. It was also one of the first ancestors of the steam engine, and it was introduced to Europe in 1200.
Characteristics
1. Since the impeller runs without friction in the machine body, it does not need lubrication, so that the discharged gas does not contain oil. It is an ideal pneumatic conveying source for chemical, food and other industries.
2. The blower is a volume operated blower. When used, the flow changes very little as the pressure changes. But the flow varies with the speed. Therefore, the choice of pressure is wide, and the choice of flow can be achieved by selecting the speed.
3. The rotating speed of the blower is relatively high, and the gap between the rotor and the rotor, the rotor and the body is small, so that leakage is small and the volumetric efficiency is high.
4. The structure of the blower determines that its mechanical friction loss is very small. Because only the bearing and gear pair have mechanical contact on the material selection, the rotor, casing and gear ring have sufficient mechanical strength. Safe operation and long service life are a major feature of blower products.
5. The rotor of the blower is verified by static and dynamic balance. The finished product runs smoothly and the vibration is extremely small.
6. The blowers with the above characteristics mainly include: Gaorui blower and sidestream fan.
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