The invention discloses an automatic
temperature control system for
urea melting spraying
granulation production, which comprises a
melting tank and an
electric control unit, a temperature sensor is arranged in the
melting tank, the
electric control unit comprises a controller for adjusting the
heating temperature of the
melting tank, and the
electric control unit further comprises a temperature acquisition
signal amplifying circuit, a feedback stability adjusting circuit and a filtering
noise reduction circuit, the feedback stability regulation circuit is adopted to perform sampling
feedback regulation on an output
signal of the following amplification
assembly, so that temperature drift imbalance in the
signal amplification
processing process is effectively avoided, error
voltage is eliminated, and the self-adaptive regulation capability of the
system is improved; the
infrared temperature measurement sensor is adopted to collect the
heating temperature in the melting tank, temperature collection signals are sent to the electric
control unit to be conditioned, the defects that in the prior art, the
time lag of a temperature sensor is high, and
temperature control feedback is not timely are effectively overcome, temperature collection
signal processing is accurate and effective, the precision of a
temperature control system is high, and the system is suitable for popularization and application. And the
production quality of
urea melting spraying
granulation is effectively improved.