Jinan Hongpeng Ventilation Equipment Co., Ltd.

language

Jinan Hongpeng Ventilation Equipment Co., Ltd.

Home page

Selection of transmission method for 3C fire exhaust fan

Release time:

2019-03-26

Smoke exhaust fan manufacturer: 3C fire-fighting smoke exhaust fan uses belt wheels, and its outer circle tangent speed is generally low, rarely exceeding 40 m/s. However, in order to save materials, cast iron grade should be selected according to the tangent speed. However, in order to consider the versatility and serialization of belt wheels, cast iron grade should be selected according to the large tangent speed used.

鸿鹏通风

The components of the casing include a volute, a diffuser, an air collector, an air inlet box and a bearing box. The force they bear is static load, and there are very few parts that bear dynamic load, such as the force borne by the bearing box is mostly dynamic load. For components subjected to static loads, the stiffness is much more important than the strength. There is no need to strictly require its physical properties, and it does not necessarily require the same material as the rotating parts. Generally, the casing steel plate of the 3C fire exhaust fan is commonly used Q235. The dynamic load on the bearing box is related to the remaining unbalanced weight of the rotor. During use, the unbalanced weight of the commonly used rotor is gradually added, causing the bearing to vibrate. Therefore, when planning the bearing housing, its stiffness and strength should be considered. When the bearing box is cast, its tensile strength should not be less than 148MPa. When the rotor of the 3C fire exhaust fan is very heavy and the dynamic load is very large, the material of the bearing box can also be high-grade cast iron or cast steel.

3C fire smoke exhaust fan in the process of operation found that the fan has abnormal sound, serious heating of the motor, shell live, switch trip, can not start and other phenomena, should be immediately shut down for inspection. In order to ensure safety, it is not allowed to repair the fan during operation. After maintenance, the trial operation should be carried out for about five minutes, and the operation should be started again after admitting that there is no abnormal phenomenon. The operation can only be carried out under the condition that the 3C fire smoke exhaust fan is completely normal. Together, it is necessary to ensure sufficient capacity and stable voltage of the power supply equipment and prevent damage to the operation. The power supply line must be a dedicated line and should not be powered by temporary lines for a long time. The use environment should always be neat, the appearance of the fan should be clean, there should be no sundries at the inlet and outlet, and the dust and other sundries in the 3C fire exhaust fan and pipeline should be eradicated on time.