Automatic control technology of feeding speed of granulator

 The main purpose of the automatic control technology of the feeding speed of the livestock feed manufacturing granulator is to ensure the stability of the working current of the granulator, so as to give full play to the production capacity of the granulator and prevent machine blockage. Its working principle is: the feeder motor adopts frequency converter for frequency conversion control, and adopts PLC control technology in the electric control center. Before the poultry feed plant works. First, enter the required current of the pelletizer in the PLC control parameters during normal operation. Generally, 80%-95% of the rated current of the motor should be used. For the feed that is easy to pelletize, the larger value is used. Smaller value; when the poultry feed machine is working, the PLC control center compares the actual value of the collected current with the set value. If the actual value is less than the set value, a certain amount of feed will be added to the frequency converter of the feeder Frequency signal, the feeding speed increases, and the feeding amount increases.


On the contrary, it is necessary to reduce the feeding frequency and the feeding amount. It should be noted that since the feed needs to enter the conditioner for conditioning before pelleting, it takes a certain time to reach the pelleting chamber. Therefore, the change of the feed speed causes a lag time for the change of the main motor current. This lag time is reflected in the PLC program control, and the frequency of the current signal collected by the PLC control center is required to be reasonable. If the frequency is small, the feeding speed and actual current cannot be adjusted to the best state in time; if the frequency is faster, then May be over-regulated. Make the actual parameters oscillate greatly around the best parameters, and even cause machine blockage. After reasonable programming control, this technology can ensure the stability of the animal feed production granulator's working current and give full play to the granulating performance. Reduce the incidence of machine failures.





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