Online automatic control system and control method for permeation water of sugarcane pressing machine

Abstract

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.

Description

technical field [0001] The present invention relates to sugarcane squeezing and extracting technology in sugar factories, specifically an on-line automatic control system and control method for permeated water of sugarcane presses in the process of sugarcane pressing and extracting juice, and relates to on-line detection and analysis of the concentration of squeezed juice in the process of sugarcane squeezing in sugar enterprises. Automatic control of permeate water addition. Background technique [0002] The production of white sugar in my country mainly relies on sugarcane as raw material, and there are mainly two methods for extracting cane juice from sugarcane: pressing method and exudation method. But so far, most of the sugarcane sugar factories in my country and other countries extract cane juice by pressing. In the process of squeezing and extracting sugarcane juice, it is very important to control the amount of two data, one is the concentration of the squeezed jui...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the concentration detection of the existing squeezed sugarcane juice and the amount of permeated water cannot be controlled in real time, and a specially developed online automatic control system and control method for the permeated water of the sugarcane press. The first and last sugarcane juice concentration detectors installed at the outlet of the sugarcane juice pump in the box are connected to the control host, and the hot water flowmeter in the hot water pump of the last compressor and the hot water pipeline connected to the permeated water nozzle in the last press It is also connected with the control host, which adjusts the speed of the hot water pump according to the process requirements according to the real-time cane juice concentration of the first and last cane juice tanks and the hot water flow rate of the permeated water, and controls the amount of permeated water added by the last press

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