手机彩票网体育彩票

Yichang high-quality high-speed centrifugal blower

Release time: 2020-03-17 08:57:04

Dust collection fans include exhaust dust collection fans and cement grinder dust collection fans. Centrifugal fans with backward or wing-shaped impellers are generally used. Because it is installed in different positions in front of and behind the dust collector, and the characteristics of the dust, the type of fan and its anticorrosive measures are also different. The required air volume is between 100-13000m³ / min and the wind pressure is between 1000-3500Pa.

The cooler exhaust fan is used to exhaust the remaining gas (temperature 200-400 ℃) in the cooler into the atmosphere. In order to prevent the dust from abrading the fan in the air, it is more suitable to install the fan behind the dust collector.

What are the characteristics of the blower? The characteristics of the blower are that when the pressure is adjusted within the allowable range, the flow rate changes little, the pressure selection range is wide, and the characteristics of forced gas transmission. The medium is free of oil during transport. The utility model has the advantages of simple structure, convenient maintenance, long service life, and small vibration of the whole machine.

The requirements for spray painting of centrifugal fans are to rivet the dried or naturally dried machine to the nameplate and product nameplate. Ensure that the riveting is firm, without vibration and deformation, and consistent with the fan product.

The main structural components of the fan are the impeller, casing, air inlet, bracket, motor, pulley, coupling, muffler, transmission (bearing), etc.

The reason for the formation of fan surge The fan does not work stably at any operating point, which is determined by the characteristics of the fan. As shown in Figures 4 to 3, the pressure characteristic curve of the fan has a peak, that is, the pressure of the fan reaches a maximum value under a certain air volume, and the pressure of the fan will decrease when the air pressure is greater or less than this air volume. If the operating condition point of the fan is to the right of the peak point D of the pressure characteristic curve of the fan (ie, the falling section of the pressure characteristic curve), for example, the intersection point B of the fan characteristic curve and the pipe network characteristic curve R in the figure. At this time, if the pipe network is disturbed and the resistance in the pipe network suddenly rises by Δ p, will the amount of air passing through the pipe network decrease? Q, which is equivalent to the pipe network characteristic curve suddenly changed from R. Move to R '. In order to adapt to the sudden change in the pipe network, the fan immediately enters the B 'point to run, and the output air volume decreases accordingly. From the fan characteristic curve, the fan output air volume is reduced by △ q,. At the same time, the wind pressure rises evenly, which is consistent with the change of the pipe network. When the interference disappears, the characteristics of the pipe network return to the original state, and the fan returns to point B to work immediately. Because when working in this zone, the working state of the fan can automatically balance with the working state of the pipe network and work stably, we call this zone the stable working area of the fan.

A basic idea for controlling the corrosion of a fan is to isolate the corrosive environment. In the design of centrifugal fans, surface treatment methods such as flange, galvanization, chrome plating, and chemical plating are often used. These methods are effective in many environments.

The compressor must not be operated under the condition of loss of pressure and flow of lubricating oil to avoid damaging the bearings. This requirement also applies to the operation of the sealing oil system, since the seal ring is lubricated by the sealing oil. If the seal ring runs dry, it will be severely damaged. Therefore, the compressor can not start operation until both the lubricating oil and sealing oil systems have been operated. In addition, process oil must not be allowed to enter the compressor until oil has flowed into the sealing system to prevent leakage and prevent gas from entering the oil seal chamber.

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