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What is the role of centrifugal fans and axial fans in mechanical ventilation? Two different types of fans, centrifugal fans and axial fans, can play a role in ventilation in production and life, but because these two types are different, Their characteristics and functions are also different, but these two types of fans can be used in mechanical ventilation, and they can achieve the results that users want. However, there are still significant differences between the two types of fans. What are the different roles in machinery?
In some places, the use of centrifugal fans may cause condensation on doors, windows, walls, and even slight dew on the surface. As long as the fan is stopped, windows are opened, Yunnan fans, axial fans, and blowers are turned on. The hot and humid air can be removed from the warehouse. Condensation will not occur with slow-flow ventilation using an axial fan, and only the middle and upper layers of the grain temperature will rise slowly, and the grain temperature will decline steadily as the ventilation continues.
Although this phenomenon occurs, the effect of centrifugal fan cooling and precipitation is still very obvious, and only a short ventilation time can achieve good results. The disadvantage is that if the centrifugal fan is not well grasped, dew condensation may occur. Therefore, if the user uses the centrifugal fan, he must know in advance how to effectively prevent such a phenomenon.
Axial fans are different. Axial flow fans mainly use the function of slow ventilation to make the place achieve a good cooling effect. The advantage is that the unit energy consumption is relatively low. This is very important to society today. It is easier to add this type of fan. The possibility of being condensed is relatively low, so it is loved by consumers, but it also has its own shortcomings. For example, the precipitation effect of this fan is not very obvious, and the air volume is relatively small.
In any case, these two types of fans have their own advantages. Users should take their actual needs as the starting point in the selection process so that they can choose a more suitable fan.
What oil is used in rotary blowers? Can rotary blowers work without fuel? Please read below to learn more about rotary blowers.
When the rotary blower is running, it must not be refueled, otherwise short-term damage will occur. When the rotary blower is in operation, it needs lubricating oil to lubricate it, otherwise it cannot operate normally. When the rotary blower is in operation, it needs to drop per second. Add two to three drops of lubricating oil to ensure the lubrication of the fan impeller so that it can run normally.
The rotary blower has a separate oil and gas separation chamber. In order to save the oil recovery device, it is not possible to fully separate the oil and gas. Most of the air transported contains some oil.
Rotary blowers are mainly used in some small sewage treatment. The advantages are low noise, low energy consumption, and relatively cheap.
High-pressure fan technical knowledge
Through a large amount of experimental data, we know that the exhaust pressure (vacuity) of the high-pressure fan increases, the flow of the high-pressure fan decreases, the shaft power increases, the total efficiency curve is parabolic, and has a high point. The working curve of the high pressure fan, we clearly see that the high pressure fan has a lower efficiency under positive pressure air supply conditions, the rate is only 44%, but the high pressure fan has a lower efficiency under suction conditions. Hubei blowers, The high rate is only 32%, so high-pressure fans can sometimes be used as rough vacuum generators.
The flow rate is greatly reduced with the increase of exhaust pressure and vacuum. The steep drop type can provide higher output pressure at a lower flow rate, while the high pressure fan (air pump) requires higher pressure and vacuum. , The corresponding efficiency is not high at this time. From the operating relationship between several parameters of the high-pressure fan, we can see that small changes in flow have little effect on its output pressure. Therefore, when the high-pressure fan (air pump) is running, the flow is continuous and stable, and the generated wind pressure is also stable. With the increase of the exhaust pressure and vacuum, the Jiangsu blower and the shaft power also increase. In order to avoid overload at startup, the suction and exhaust ports should be completely blocked, and the exhaust pressure should be too high to protect the air pump and shaker. Generally, the regulator valve of the air pump should be opened and the pressure or vacuum safety valve should be installed in the corresponding pipeline when driving. With the reduction of the axial clearance, the gap between the outer edge of the impeller and the diaphragm, the pressure and flow increase, so the precision, processability and reliability of parts processing are very important. The efficiency of a high-pressure fan depends mainly on whether it is high or low. this place. This is also the embodiment of the value of Dongshan Technology's Longgu high-pressure fan. Longgu high pressure fan (vortex air pump) has very strict and precise requirements for the manufacturing and processing of impellers, and special processing of the pump casing. It is only after casting a product with outstanding cost-effectiveness that it is used more and more widely.
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