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A fully automatic formaldehyde concentration detection device and its control method

A fully automatic technology for concentration detection, applied in measuring devices, analysis of suspensions and porous materials, scientific instruments, etc., can solve problems such as complex operation of detection methods and detection processes

Inactive Publication Date: 2020-06-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and insufficiencies in the prior art, the present invention provides a fully automatic formaldehyde concentration detection device and its control method, which overcomes the defects of complicated operation in the detection process of the existing detection method

Method used

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  • A fully automatic formaldehyde concentration detection device and its control method
  • A fully automatic formaldehyde concentration detection device and its control method
  • A fully automatic formaldehyde concentration detection device and its control method

Examples

Experimental program
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Embodiment 1

[0072] Such as Figure 1 to Figure 2 As shown, this embodiment provides a fully automatic formaldehyde concentration detection device, including an absorption tube 1, a colorimetric tube 2, and a spectrophotometer 3, and also includes a distilled water storage box 4, an absorption liquid stock solution storage box 5, and a color developer storage box. Box 6, air pump 7 and control unit 8;

[0073] The distilled water storage box 4 is sealed and connected to the colorimetric tube 2 and the absorption tube 1, and the absorption liquid stock solution storage box 5 and the color developer storage box 6 are both sealed and connected to the absorption tube 1, and the absorption tube 1 is sealed and connected to the colorimetric tube 2; Distilled water storage box 4, absorption liquid stock solution storage box 5, chromogenic agent storage box 6 and colorimetric tube 2 are all equipped with liquid level sensors; There is also a liquid pump inside; a cut-off valve and a flow meter ar...

Embodiment 2

[0082] Such as Figure 1 to Figure 2 As shown, this embodiment provides a control method for a fully automatic formaldehyde concentration detection device using the device in embodiment 1 to detect formaldehyde concentration, which specifically includes the following steps:

[0083] Step 1: Leak detection:

[0084] The ECU83 controls the touch display 86 to display and prompt the operator to block the sampling port of the sampling tube 11. After the operator blocks the sampling port of the sampling tube 11, the ECU83 judges whether the sampling tube 11 leaks air according to the information of the fifth flowmeter 112. If the tube does not leak, the equipment starts smoothly; if the ECU 83 judges that the sampling tube 11 is leaking, the device touch display 86 will prompt to replace the sampling tube 11 and re-check for leaks;

[0085] Step 2: Automatic cleaning:

[0086] (a) The ECU 83 issues a control command to sequentially control the opening of the first shut-off valve ...

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Abstract

The invention discloses full-automatic formaldehyde concentration detection equipment and a control method thereof. The detection equipment comprises an ultrasonic cleaner, an absorption tube, a colorimetric tube, a spectrophotometer, a distilled water storage tank, an adsorption liquid stoste storage tank, a developing agent storage tank, an air pump and a control unit, wherein the distilled water storage tank is communicated with the colorimetric tube and the absorption tube in a sealed manner; both the adsorption liquid stoste storage tank and the developing agent storage tank are communicated with the absorption tube in the sealed manner; the absorption tube is communicated with the colorimetric tube in the sealed manner; the distilled water storage tank, the adsorption liquid stoste storage tank and the developing agent storage tank are all internally provided with liquid level sensors; the adsorption liquid stoste storage tank and the developing agent storage tank are all internally provided with liquid pumps; the air pump, the liquid level sensors, the liquid pumps, stop valves, flowmeters and liquid discharge valves are all connected with the control unit. By adopting the full-automatic formaldehyde concentration detection equipment and the control method disclosed by the invention, the detection time for detecting the concentration of formaldehyde by using a phenol reagent spectrophotometric method can be effectively shortened, and the precision and the reproducibility of testing results can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde gas concentration detection, and in particular relates to a fully automatic formaldehyde concentration detection device and a control method thereof. Background technique [0002] Formaldehyde is a harmful gas that can induce various diseases and is carcinogenic. In recent years, with the development of the construction industry, the harm of formaldehyde to the human body has become increasingly serious. At present, the methods for detecting formaldehyde include spectrophotometry, spectrometry, electrochemical sensor method and chromatography. Among them, spectrophotometry is widely used in production because of its simple equipment, low investment and accurate measurement. In addition, GB / T18204.26-2000 "Methods for Determination of Formaldehyde in Air in Public Places" stipulates that phenol reagent spectrophotometry is the arbitration method. However, when the concentration of formaldehy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N2015/0693
Inventor 滑海宁刘生全
Owner CHANGAN UNIV
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