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Process production and protection function of centrifugal fan for plastic machinery

May 29, 2019

In the process of using plastic mechanical centrifugal fan, it is essentially a kind of variable flow constant pressure device. In the process of operation, when its rotating speed is fixed, the theoretical curve of pressure and flow rate of centrifugal fan should be a straight line. Due to the internal loss, the actual characteristic curve is curved. The pressure produced in centrifugal fan is greatly affected by the change of inlet temperature or density. For a given intake volume, the highest intake temperature (the lowest air density) produces the lowest pressure. For a given pressure and flow characteristic curve, there is a power and flow characteristic curve. When the blower runs at a constant speed, the required power increases with the decrease of intake temperature for a given flow rate.

The centrifugal fan of plastic machinery is more convenient in the process of operation, and has the remote automatic control rs-485 interface, which can be used for remote control, and has the perfect protection functions such as short circuit, overload, overheating and so on. Good power saving effect, considering the different process requirements of the production site, the power saving rate is 20% 50%.

Centrifugal fan equipment plays an important protective role in process production, but its power consumption is also relatively large. In order to achieve the purpose of saving electricity, we can adjust the input frequency of the motor according to the performance characteristics and production process requirements of the equipment. That is to say, by changing the speed of the motor and according to the production, the process needs to adjust the gas, liquid flow rate, flow rate and pressure reasonably, so as to achieve the effect of energy saving.www.jnblower.com