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Temperature precise control device and temperature precise control method in extraction process of traditional Chinese medicines

An extraction process and precise control technology, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc., can solve the problems of large external disturbance, large temperature adjustment hysteresis, and the inability to achieve the temperature of the extraction process, to achieve Automated production, precise temperature control, improved batch stability and product quality

Inactive Publication Date: 2016-11-09
苏州浙远自动化工程技术有限公司 +1
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Problems solved by technology

Since the extraction process of traditional Chinese medicine is affected by the steam quality of the heating source, the external disturbance is very large, and the hysteresis of the temperature adjustment is very large, the conventional PID adjustment currently used cannot realize the precise control of the extraction process temperature

Method used

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  • Temperature precise control device and temperature precise control method in extraction process of traditional Chinese medicines

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Embodiment 1

[0020] see figure 1 , the embodiment of the present invention includes:

[0021] A precise temperature control device for the extraction process of traditional Chinese medicine, comprising an extraction tank 6 , a jacket 7 , a first PID regulator 4 , a second PID regulator 3 , a tank temperature sensor 2 , a jacket temperature sensor 1 , and a steam regulating valve 5 . The jacket 7 is set outside the tank body of the extraction tank 6 . The temperature sensor 2 in the tank measures the temperature in the extraction tank 6 , and the first PID regulator 4 is connected to the temperature sensor 2 in the tank. The jacket temperature sensor 1 measures the temperature of the jacket 7 , and the second PID regulator 3 is connected to the jacket temperature sensor 1 . The first PID regulator 4 , the second PID regulator 3 , and the steam regulating valve 5 are connected in sequence, and the steam regulating valve 5 controls the supply of steam to the extraction tank 6 . The PID reg...

Embodiment 2

[0023] In the Chinese medicine extraction process of the present embodiment, require:

[0024] The temperature in the extraction tank 6 needs to be heated from 15°C to 100°C and maintained at 100°C for 2 hours.

[0025] At any time, the temperature inside the extraction tank 6 cannot exceed 101°C and cannot be lower than 99°C, and the temperature rise rate of the extraction tank 6 cannot exceed 1°C / min.

[0026] The jacket temperature sensor 1 reading cannot exceed 110°C at any time.

[0027] A method for precisely controlling the temperature of a traditional Chinese medicine extraction process is provided, comprising the steps of:

[0028] In order to measure the temperature in the tank of the extraction tank 6, the present invention introduces a new variable jacket temperature, and sets the first PID regulator 4, which is the main PID regulator, and the second PID regulator 3, which is the secondary PID regulator;

[0029] The second PID regulator 3 and the jacket temperat...

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Abstract

The invention discloses a temperature precise control device and a temperature precise control method in the extraction process of traditional Chinese medicines. The device is equipped with a first PID regulator, a second PID regulator, a jacket temperature sensor, and a tank temperature sensor. For precise control of the temperature in the extraction process of traditional Chinese medicines using the device, the second PID regulator and the jacket temperature sensor control the temperature of a jacket, the output of the second PID regulator is directly fed back to a steam regulating valve, the first PID regulator and the tank temperature sensor control the temperature in an extraction tank, the output of the first PID regulator is fed back to the second PID regulator, and the output of the first PID regulator is used as the set value of the second PID regulator. By introducing a new variable, namely, jacket temperature, the problem that the temperature cannot be controlled precisely in the extraction process of traditional Chinese medicines at present is solved, precise control of the temperature in the extraction process of traditional Chinese medicines is realized, automated production is realized, and the traditional Chinese medicine extraction process batch stability and product quality are improved.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicine pharmaceutical process control, in particular to the field of traditional Chinese medicine extraction technology, and in particular to a device and method for precisely controlling the temperature of the traditional Chinese medicine extraction process. Background technique [0002] The chemical composition contained in traditional Chinese medicine is very complex. It contains not only a variety of active ingredients, but also a variety of ineffective ingredients, and may also contain toxic ingredients. It is an important content in the field of Chinese medicine research to extract the active ingredients of traditional Chinese medicine and further separate and purify them to obtain effective monomers. Extraction of traditional Chinese medicine is to use some techniques to maximize the extraction of active ingredients, so as to improve the internal quality and clinical treatment effect of...

Claims

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Application Information

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IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 陈勇刘雪松黄中海宋波林志展李页瑞
Owner 苏州浙远自动化工程技术有限公司
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