Cooling automatic control method and device for cream emulsifying machine

Abstract

The invention relates to a cooling automatic control method and device for a cream emulsifying machine. The method includes the following steps: according to a cooling starting instruction, opening a water outlet valve of a cream emulsifying pot of the cream emulsifying machine and starting a control period; at an initial moment of the control period, acquiring an initial temperature value of a material in a cream emulsifying pot and acquiring a real-time temperature value of the material in the control period; in the control period, calculating a difference value of the real-time temperature value and the initial temperature value and comparing the difference value and a set segmented temperature drop scale; when the difference value is smaller than the segmented temperature drop scale, opening the water inlet valve of the cream emulsifying pot of the cream emulsifying machine, or else closing the water inlet valve of the cream emulsifying pot of the cream emulsifying machine; and when the control period ends, comparing the real-time temperature value and a target temperature value and if the real-time temperature value is larger than the target temperature value, starting a new control period and if the real-time temperature value is smaller than or equal to the target temperature value, ending the process.

Description

Technical field [0001] The invention relates to an automatic control in the daily chemical industry, in particular to a cooling automatic control method and device of a cream emulsifying machine. Background technique [0002] In recent years, the requirements for product quality in the daily chemical industry have become higher and higher. Temperature control is one of the important quality process control links, especially the cooling control process. For different products, the requirements for the cooling rate of materials in different process stages are different. In some process stages, the material temperature is cooled too fast, it is easy to cause the material to crystallize, and even the product characteristics change, and if the temperature is cooled too slowly, it will affect the production efficiency. Under this technological requirement, the usual practice is to manually control the opening of the cooling water inlet valve of the emulsification configuration pot ba...

AI Technical Summary

Problems solved by technology

However, during the material cooling process for several hours, the disadvantages of the method of manually controlling the opening of the cooling water inlet valve are obvious: firstly, different operators have different operating experiences, which will inevitably affect the stability of the product; secondly The cooling water temperature is greatly affected by external factors (such as outdoor temperature changes, water load changes, and material weights, etc.), and it is impossible for even a skilled operator to completely follow the changes in environmental factors; moreover , according to field statistics, it is found that if the method of manually controlling the opening of the cooling water inlet valve is used, the cooling rate of the material will be quite different from the ideal cooling rate required by the process, and this difference can usually reach more than 20%.

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