Working principle

Fan is essentially 1 kind of variable current constant pressure device. When the speed is constant, the pressure flow theoretical curve of the centrifugal fan should be a straight line. The actual curve bends due to internal losses. The pressure generated by the centrifugal fan is greatly affected by the change of intake air temperature or density. For a given intake air volume, Z is high. The intake air temperature is low. When the air density Z is low, the pressure Z is low. For a given pressure and flow characteristic curve, there are power and flow characteristic curves. When the blower is operated at a constant speed, for a given flow rate, the required power increases as the intake air temperature decreases.

According to the principle of converting kinetic energy into potential energy, the titanium fan uses a high-speed rotating impeller to accelerate the gas, then decelerate, change the flow direction, and convert kinetic energy into potential energy pressure. In a single-stage centrifugal fan, gas enters the impeller from the axial direction. When the gas flows through the impeller, it becomes radial and then enters the diffuser. In the diffuser, the gas changes the direction of flow, causing deceleration, converting kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, followed by the expansion process. In a multi-stage fan, the reflux allows the airflow to enter the next impeller, creating a higher pressure.

Product parameters

Installation

During installation:

After installation:

2. In order to prevent the motor from overloading and burning, the fan must be started without load. If the situation is good, gradually increase the load.

Maintenance

1. The fan should be regularly maintained once or twice a year.

2. Preparation for regular maintenance shall determine key maintenance items according to daily maintenance records, and prepare various spare parts and wearing parts.

3. Before trial operation, manual turning should be done to check whether there is any friction and other abnormalities. If it is normal, it can be powered on for trial operation. When the air inlet or air outlet is opened, the current should be monitored at the same time to avoid motor overload.

A. check and replace the impeller. Open the fan observation hole or air inlet for dust removal, and observe whether the blades have cracks and excessive wear.

B. Check the fan bearings, replace and fill oil.

C. Check the coupling and replace the wearing parts. Examine the stud and elastic sleeve. Before driving, carefully check the concentricity of the left and right couplings, and use a flat ruler to check and adjust the different positions of the couplings until they are completely concentric.

D. Check the motor bearings, replace and fill oil.

E. Belt inspection and replacement. The two pulleys should be aligned, and belt distortion is strictly prohibited. The belt should be moderately tensioned. When disassembling the belt, the center distance of the pulley should be reduced, and hard loading and unloading of the belt is strictly prohibited.