Zhengtian pill mixing process end point determination method

A technology of mixing process and measurement method, which is applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of unstable quality, time-consuming and labor-intensive, and no unified judgment standard, and achieve stable product quality and improve product quality. Production efficiency, the effect of improving the level of quality control

Inactive Publication Date: 2015-11-25
ZHEJIANG UNIV +1
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Problems solved by technology

The traditional mixing process mainly relies on the experience of the operator, which is time-consuming and labor-intensive, and there is no unified standard for discrimination, resulting in unstable quality

Method used

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  • Zhengtian pill mixing process end point determination method
  • Zhengtian pill mixing process end point determination method
  • Zhengtian pill mixing process end point determination method

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Embodiment 1

[0026] 1. stratified sampling

[0027] The setting of sampling points during the mixing process of Zhengtian pills includes: extending into the left and right sides of the feed inlet, setting 7 sampling points on the material surface, material middle layer and material bottom respectively, a total of 14 sampling points, see figure 1 . Sampling time point settings include: mixing 0min (mixing not started), mixing 10min, mixing 20min and mixing 30min (mixing stopped).

[0028] 2. Sample near-infrared spectrum collection

[0029] Take the sample powder during the mixing process in the sample tank, keep the powder surface flush with the sample tank surface, use a diffuse reflection integrating sphere to collect near-infrared spectra, use air as a reference, scan times 32, resolution 8cm -1 , the scanning spectrum range is 4000~10000cm -1 ; Each sample was collected 3 times, and the average spectrum was saved, and the data saving format was 1 / logR, see figure 2 .

[0030] 3....

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Abstract

The invention provides a Zhengtian pill mixing process end point determination method. The method comprises the steps of stratified sampling in the mixing process, near infrared spectrum collecting for a sample in the mixing process, mixing uniformity calculating through variable coefficients, spectrum pretreating and waveband selecting, mixing end point judging through principal component analysis and mahalanobis distance and Zhengtian pill mixing end point time determining. According to the Zhengtian pill mixing process end point determination method, a near infrared online analysis technology is introduced into the Zhengtian pill mixing process, and therefore evaluation on the mixing uniformity of powder is achieved; the method is reasonable in design and beneficial for improving the quality control level of the Zhengtian pill mixing process, and it can be adequately guaranteed that the product quality is stable and reliable; quick and in-time judgment on the mixing uniformity and a mixing end point in the Zhengtian pill mixing process is achieved, improvement of the production efficiency is facilitated, the production quality is guaranteed, and great realistic significance is achieved for traditional Chinese medicine industry technical progress and product quality upgrade.

Description

technical field [0001] The invention belongs to the field of near-infrared on-line detection, and in particular relates to a method for measuring the mixing uniformity and the mixing end point in the mixing process of Zhengtian pills. Background technique [0002] Zhengtian Pill is a Chinese patent medicine widely used in the treatment of tension headache, nervous headache and other headaches. It mainly includes 15 medicinal materials such as Uncaria, Paeoniae Alba, Rhizoma Chuanxiong, Angelica, Rehmannia, Angelica, Fangfeng, Notopterygium, Peach Kernel, and Safflower. The mixing process is a key process link in the production process of Zhengtian pills. Its main purpose is to mix more than a dozen kinds of medicinal powders evenly to ensure the uniformity and stability of the active ingredients in the pills. The traditional mixing process mainly relies on the experience of the operator, which is time-consuming and labor-intensive, and there is no unified standard for discr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359
Inventor 栾连军王勇陈佳乐刘志刚刘雪松李琼娅代瑶霞金叶吴永江
Owner ZHEJIANG UNIV
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