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Debugging method and Application effect of centrifugal Fan for plastic Machinery

Jun 26, 2018

The centrifugal fan of plastic machinery is mainly composed of air outlet, motor, air inlet, air valve, impeller and other parts during the process of manufacture. Under different conditions, the use effect of the equipment is also different. The operation conditions of different parts are not uniform, we can debug the centrifugal fan to the best condition in operation, we can start from many aspects.

1. To a certain extent, plastic machinery centrifugal fans are allowed to start at full pressure or be powered down by pressure, but it is important to note that the rated current is 5-7 times the current at full voltage starting, and the starting torque is proportional to the square of the voltage. When the power network capacity is insufficient, it should be started by reducing voltage.

2. When testing a plastic mechanical centrifugal fan, it is necessary to carefully read the book on its product description and to check to a certain extent whether its wiring method is consistent with the wiring diagram. To a certain extent, we should carefully check whether the working voltage of the power supply to the fan meets the requirements, whether the power supply is lacking in phase or in the same phase, and whether the capacity of the components of the distribution apparatus conforms to the requirements.


3. The number of people of a plastic machinery centrifugal fan needs not less than two people when it is being tested, one person controls the power supply, one person observes the operation of the fan, and to a certain extent, if an abnormal phenomenon is found, the fan immediately stops to check. First, check that the rotation direction is correct; After the centrifugal fan starts to operate, it should check immediately if the running current of each phase is balanced, whether the current exceeds the rated current; if there is any abnormal phenomenon, it should stop to check. After five minutes of operation, stop to check if the fan is abnormal and confirm that there is no abnormal phenomenon before starting the machine.

4. The centrifugal fan of plastic machinery should start at low speed in operation first, check its rotation direction to a certain extent effectively, when starting high speed must wait until the fan is still before starting. This can effectively prevent its high-speed reverse rotation, causing switch tripping and motor damage.

5. When the centrifugal fan reaches its normal speed, it should measure whether the input current of the fan is normal or not, and the operating current of the centrifugal fan should not exceed its rated current. If the operating current exceeds its rated current, check that the supply voltage is normal.http://www.jnblower.com/