Sample collection and preparation device for collecting near infrared spectrum of coal powder on line

A technology of pulverized coal and sample preparation, which is applied in sampling devices, measuring devices, and material analysis through optical means, to achieve the effects of easy model expansion, improved adaptability, and convenient maintenance

Inactive Publication Date: 2015-02-04
NORTHEASTERN UNIV
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a sampling and sample preparation device for collecting near-infrared spectra of pulverized coal on the production line, which overcomes the existing related equipment that is easily affected by material density, temperature, and surface smoothness whe...

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  • Sample collection and preparation device for collecting near infrared spectrum of coal powder on line
  • Sample collection and preparation device for collecting near infrared spectrum of coal powder on line
  • Sample collection and preparation device for collecting near infrared spectrum of coal powder on line

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Embodiment Construction

[0020] according to Figure 1~5 The specific structure and working process of the present invention will be described in detail.

[0021] The sampling and sample preparation device includes a sample processing unit, a system control unit and an outer casing.

[0022] The sample processing unit installed inside the shell box for retrieving from the pulverized coal pipeline 1 into the furnace and making a pulverized coal sample scanned by the near-infrared spectrometer 45 includes an exhaust pipe 2, a sampling pipe 19, a first electric valve 3, a second Second electric valve 6, third electric valve 4, fourth electric valve 17, fifth electric valve 16, sixth electric valve 10, negative pressure device 5, cyclone separator 7, first electric pressure regulator 8, second electric valve Pressure regulator 9, stepping track roller 11, stepping track 12, first pulverized coal temporary storage bin 13, second pulverized coal temporary storage bin 14, pulverized coal sampler 15, sample ...

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Abstract

The invention discloses a sample collection and preparation device for collecting a near infrared spectrum of coal powder on line. The sample collection and preparation device comprises a shell box body, a sample processing unit assembled in the shell box body and a system control unit. The defect that relevant equipment is easily affected by relevant factors such as the compactness, temperature and surface flatness of a material when collecting the near infrared spectrum of a powdered substance is overcome. The sample collection and preparation device is characterized in that a pressure sensor is mounted on a sample collection pipe in the sample processing unit; an approach temperature sensor, a sapphire window and a near infrared standard reference plate are mounted on a coal powder sample preparation device; the coal powder temperature is automatically adjusted by the system control unit by controlling the cold air amount, and the coal powder compactness is automatically adjusted by controlling the pressure difference between compressed air and a coal powder pipeline; furthermore, the device also has a function of automatically catching outside samples. Compared with a product of the same type, the sample collection and preparation device is reasonable in structural design, and can be used for obviously improving the repetitiveness and stability of near infrared spectrum collection and thus ensuring the accuracy of on-line near infrared coal quality detection.

Description

technical field [0001] The invention relates to a sampling and sample preparation device for collecting near-infrared spectra of pulverized coal on a production line, in particular to a sampling device with automatic control of pulverized coal sampling density, temperature, and surface smoothness, with automatic correction and automatic grabbing of model boundaries. The online sampling and sample preparation device with functions such as samples can also be used for online collection of near-infrared spectra or other spectra of powders such as flour, milk powder, and animal feed. Background technique [0002] Near-infrared spectrum is an absorption spectrum produced by frequency doubling and combination frequency, and its wavelength is defined in the range of 780nm to 2500nm. Because this technology has many advantages such as fast measurement speed, high test efficiency, low analysis cost, no need to damage samples, clean and pollution-free, it has been used in agricultural...

Claims

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Application Information

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IPC IPC(8): G01N21/3563G01N21/359G01N1/04
Inventor 赵勇王圣毫李智裴振英张刚孙力
Owner NORTHEASTERN UNIV
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