Formaldehyde detection device and formaldehyde detection method

A detection device, formaldehyde technology, applied in measurement devices, material analysis by optical means, instruments, etc., can solve problems such as reducing detection accuracy, and achieve the effects of convenient observation, novel design, and easy use

Inactive Publication Date: 2022-04-12
金成琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a formaldehyde detection device and a formaldehyde detection method, capable of preventing particles such as dust from melting in the phenol reagent, affecting the color change, improving the accuracy of detection, and observing the color after the reaction between the phenol reagent and the gas. It is easy to use and prevent the gas after the reaction is sucked into the reagent bottle by the negative pressure fan again, resulting in inaccurate detection, which is conducive to improving the accuracy of detection. The reagent bottle is moved outside the box, which is convenient for observation, which solves the problem that the existing formaldehyde detection method relies on the formaldehyde in the air to automatically contact the detection agent, and it is impossible to know how much formaldehyde in the air has been detected, or the gas that has been detected and reacted again Entering the reaction pool, reducing the detection accuracy

Method used

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  • Formaldehyde detection device and formaldehyde detection method
  • Formaldehyde detection device and formaldehyde detection method
  • Formaldehyde detection device and formaldehyde detection method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] see figure 1 , 2 , 3 and 8, the formaldehyde detection device comprises a box body 1, the bottom inner wall of the box body 1 is fixedly connected with a support plate 7, and the top of the support plate 7 is slidably connected with a reagent bottle 9, which has a phenol reagent stored in the reagent bottle 9, formaldehyde and After the phenol reagent reacts, a blue-green compound is generated. By observing the color change after the reaction between the phenol reagent and the gas, it is judged whether there is formaldehyde or formaldehyde exceeds the standard in the room. The top of the reagent bottle 9 is provided with a bottle cap 10 and a support plate 7 There are chutes arranged in a rectangular array on the top of the chute, and sliders 6 are respectively placed inside the chute, and the top of the slider 6 is fixedly connected to the limit ring 8, and the inner wall of the limit ring 8 is socketed with the outer wall of the reagent bottle 9. The front of the sli...

Embodiment 2

[0038] see Figure 5, both sides of the box body 1 are equipped with gas guide components 4, so that the gas in the room passively enters the reagent bottle 9, increasing the possibility of contact between the formaldehyde contained in the gas in the room and the phenol reagent, and ensuring the gas in every corner of the room All can be detected to improve the efficiency of detection. The air guide assembly 4 includes negative pressure fans 401 fixed on both sides of the box body 1. The exhaust end of the negative pressure fan 401 is fixedly connected with an air guide plate 402. The exhaust of the air guide plate 402 end is fixedly connected with a first air guide tube 403, the exhaust end of the first air guide tube 403 is connected with the intake end of the purification box 5, and the exhaust end of the purification box 5 is fixedly connected with a second air guide tube 404, and the second air guide tube 404 The exhaust end of the exhaust end is fixedly connected with a ...

Embodiment 3

[0041] see Figure 6 , the side where the air guide assembly 4 is located in the box body 1 is provided with a purification box 5, the purification box 5 includes a gravel layer 501 and a filter screen 502, and the gravel layer 501 and the filter screen 502 are fixed on the inner side wall of the purification box 5 Above, the gravel layer 501 is close to the first air duct 403, and the second gravel layer 501 is close to the second air duct 404, and the filter screen 502 and the gravel layer 501 in the purification box 5 are used to eliminate solids such as dust or dust contained in the gas. Particles are filtered to avoid melting in the phenol reagent, which will affect the color change and improve the accuracy of detection.

[0042] Further, a support rod 12 is fixedly connected to the bottom inner wall of the box body 1 , and the top of the support rod 12 is fixedly connected to the bottom of the clean box 5 , so as to facilitate fixing the clean box 5 .

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Abstract

The invention relates to the technical field of formaldehyde detection, and discloses a formaldehyde detection device and a formaldehyde detection method.The formaldehyde detection device comprises a box body, gas guide assemblies are arranged on the two sides of the box body, purification boxes are arranged on the sides, located in the box body, of the gas guide assemblies, and an adjusting assembly is arranged at the top of the side, located in the box body, of each gas guide assembly; the device is simple in structure and novel in design, dust and other particles are prevented from being melted in a phenol reagent to affect color change, the detection precision is improved, the phenol reagent can be conveniently detected by observing the color change after the reaction of the phenol reagent and gas, and the detection accuracy is improved. The device is convenient to use, prevents the situation that gas after reaction is sucked into the reagent bottle again by the negative pressure fan to cause inaccurate detection, is favorable for improving the detection accuracy, enables the reagent bottle to be moved out of the box body, is convenient to observe, and is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of formaldehyde detection, in particular to a formaldehyde detection device and a formaldehyde detection method. Background technique [0002] Formaldehyde is usually a colorless gas with a pungent odor. It is easily soluble in water and ether, and its aqueous solution concentration can reach up to 55%. It can be miscible with organic solvents such as ethanol and acetone in any proportion, but insoluble in petroleum ether. The liquid tends to become turbid when it is stored for a long time when it is cold, and it will form a paraformaldehyde precipitate at a low temperature. Excessive formaldehyde can cause symptoms such as headache, dizziness, fatigue, nausea, vomiting, chest tightness, eye pain, sore throat, poor appetite, palpitations, insomnia, weight loss, memory loss, and autonomic disorders; long-term inhalation by pregnant women may cause fetal Deformity, even death, long-term inhalation of men can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/78
Inventor 金成琦
Owner 金成琦
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