The invention discloses an online
automatic control system and control method for
permeation water of a sugarcane pressing
machine. According to the
system, a first sugarcane juice concentration
detector is installed on an outlet of a number 1& 2 sugarcane juice box; a last sugarcane juice concentration
detector is installed at the position of an outlet of a last sugarcane juice box; a
permeation water hot water pipeline of a last pressing
machine is provided with a hot
water flow meter; and the first sugarcane juice concentration
detector, the last sugarcane juice concentration detector, a hot water pump and the hot
water flow meter are all connected with a control host. A hot water tank liquid level meter of a hot water tank and a self-holding
electromagnetic valve at a connected-in hot water pipeline are also connected with the control host. According to the control method, a sugarcane juice concentration value of the control host is compared with a set value, and the rotating speed of the hot water pump is adjusted; and the control host reckons whether the current
permeation water adding amount meets the requirement or not according to the hot
water flow and a last sugarcane juice concentration value, accordingly the hot water pump is controlled, and the permeation water adding amount is adjusted. The control host controls the self-holding
electromagnetic valve to perform automatic hot water adding according to a
signal of the hot water tank liquid level meter. The online
automatic control system and control method for the permeation water of the sugarcane pressing
machine perform automatic detection and real-
time control on reasonable adding of the permeation water, and
energy conservation and emission reduction are achieved.