Fan maintenance and storage

1. the use environment should always be kept neat, the surface of the blower should be kept clean, and there should be no sundries in the inlet and outlet. The dust and other sundries in the fan and the pipe are eliminated on time.

2. can be operated only under the full party situation of the fan. In order to keep the power supply measures in sufficient capacity, the voltage is not disorderly and the phase operation is strictly prohibited, the power supply line must be a special line, and it should not be powered by temporary lines for a long time.

During the operation of the 3. fan, it is found that the fan has abnormal sound, severe motor fever, shell electrification, switch tripping, inability to start and so on. It should be stopped immediately. In order to ensure safety, it is not allowed to repair during the operation of fans. After testing, it should be tested for about five minutes. No abnormal phenomena will be detected before starting operation.

4. in order to ensure the good lubrication of the fan during operation, the number of refueling is not less than 1000 hours / times, blocking bearings and electric bearings, and filling ZL - 3 lithium base grease. 2/3 that fills the inner and outer rings of the bearing. No oil shortage operation is strictly prohibited.

5. fans should be stored in a dry environment to avoid damp. When the fan is stored in the open air, it should have rain proof measures. During storage and handling, the blower should be prevented from bumping, so as not to damage the fan.

The main body of the selection casing is the thickness of the coating on the cold galvanized sheet. The fan inlet hood has 2 kinds of materials, galvanized steel plate and glass, suitable for the selection of galvanized steel plate. The motor power is 750 watts and 1100 watts and 2 kinds, and the motor of 1100 watts is good. The type of fan is more, the material is stainless steel, galvanized steel plate, aluminum alloy, color steel plate. Use a stainless steel leaf. The design and processing technology of the wind blade are varied. The rolling assembly has 2 kinds of die casting aluminum and cast iron. Under the analogy, the function of the die casting aluminum is better; the shutter automatic opening device has the centrifugal hammer, the gravity hammer type and the wind type. From experience, centrifugal hammer type is more chaotic. Gravity hammer is easy to be affected by dust accumulation. The wind type is mainly used in the 36 inch fan. Blinds mainly look at their fine compatibility.

In the power, steel, cement, papermaking and other industries, a large number of fan equipment, because of the large number of hard dust particles and acid gas in the transmission gas medium, the overcurrent components of these equipment are strongly washed and eroded, especially the impeller of its heart components. The speed of the running line at the end of the blade is up to 160 meters. The wear rate is more severe than other parts per second. According to statistics, the use of ordinary carbon steel or general wear resistant steel 16Mn made of impeller, the general service life of only half a year, the shortest only a few days, although the use of various surface anti wear measures such as surfacing, spraying, spray welding, coating polymer wear-resistant material and so on, the service life is difficult to get obvious progress. In the more commonly used methods, the surfacing is used more, and the effect is acceptable. Generally, it can be used for more than one year without large area repair. The drawback is that a lot of heat is input from the surfacing. If the control is not good, the impeller will be deformed, and it can not be repaired repeatedly. Thermal spray welding also has the same problem, which greatly limits their application.

At present, a better method is to paste or inlay wear-resistant ceramics in the surface of the impeller living worm shell. Because the wear-resistant ceramics have good wear resistance, the wear-resistant function of the machine can be greatly improved.