A sugar factory automatic defoaming control system and its working method

Abstract

The invention provides an automatic defoaming control system of a sugar mill and an operating method of the automatic defoaming control system. The automatic defoaming control system comprises a defoaming agent dissolution tank, a pneumatic defoaming agent conveying device, a water inlet pipe regulating valve, a first pneumatic valve, a second pneumatic valve, a spraying device, a liquid level sensor, an air inlet regulating valve, a flow sensor and a controller. The addition of hot water is controlled by the water inlet pipe regulating valve according to the amount of a defoaming agent to accomplish proportional dilution; a cycle program is set in the controller to open the air inlet regulating valve at a fixed time; the dissolved defoaming agent is sprayed to a defoaming area via the spraying device; the pneumatic defoaming agent conveying device conveys the defoaming agent by a compressed air manner to lower the maintenance cost; the conveying amount of the defoaming agent is measured by controlling the opening time of the second pneumatic valve to achieve effects of automatic proportional dilution, timing and quantitative spraying of the defoaming agent; foam is eliminated timely to avoid sugar loss or influence on product quality due to tank boil-overs, sugar leakage and the like; the labor and consumption of the defoaming agent are reduced; and the production cost is lowered.

Description

【Technical field】 [0001] The invention relates to the technical field of defoaming in sugar factories, in particular to an automatic defoaming control system for sugar factories capable of automatically proportionally diluting, regularly and quantitatively spraying defoaming agents and a working method thereof. 【Background technique】 [0002] During the sugar production process, a large number of foams often appear, which will cause troubles to the sugar juice transportation, sedimentation, evaporation, scouring and material box operation in the sugar production process, affect the normal production of the sugar factory, and cause sugar loss. Phenomena such as stagnation, leaking cans, leaking boxes, and running sugar. [0003] In the prior art, an automatic defoaming system for a cleaning liquid tank as shown in Chinese Patent No. 201120485940.6 uses a liquid level sensor to monitor the amount of foam in the cleaning liquid tank. When the foam height reaches a set value, th...

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Problems solved by technology

[0004] However, the above-mentioned automatic defoaming system for the cleaning liquid tank does not realize the automatic proportional dilution of the defoamer, and artificial dilution of the defoamer is relatively random, so that the concentration of the diluted defoamer emulsion is too high, and the amount of use is too large to cause waste; The liquid level sensor senses the height of the foam, and sometimes the sensor is insensitive, causing the foam to overflow; and the capacity of the defoamer in the defoamer tank is not monitored, resulting in failure to prepare a new defoamer in time after use up , affecting work efficiency; the defoamer pump is easy to wear and tear, and the maintenance cost is high

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