CN212844570U - Quantitative sampling formaldehyde self-testing device - Google Patents

Abstract

The utility model discloses a quantitative sampling formaldehyde self-test device. Including case, gas sampling ware, transparent reaction flask, advance a kind needle tubing and syringe of shooing, the gas sampling ware be the bleeder, its bottleneck of reaction flask plugged by the rubber buffer, be equipped with air inlet and gas outlet on the rubber buffer, even intake pipe extends to the reaction flask bottom under the air inlet, still is equipped with phenol reagent in the reaction flask, advance a kind needle tubing include around continuous needle tubing and gas hose, gas hose and bleeder air outlet size suit, when the air outlet card goes into gas hose, can the chucking air outlet and seal the lateral wall of air outlet, the case of shooing be equipped with the platform of shooing on the diapire, shoot the bench and be equipped with the groove of shooing, be equipped with the mouth of shooing directly over the platform, still be equipped with the light source on the roof, a lateral wall of the case of shooing is the door that can open and shut. The utility model provides an economic, rapid, simple and reliable formaldehyde self-testing scheme for common families.

Description

Quantitative sampling formaldehyde self-testing device

The technical field is as follows:

the utility model belongs to formaldehyde detection area, concretely relates to quantitative sample formaldehyde self-test device.

Background art:

after undergoing "soot-type" and "photochemical smog-type" pollution, the human society has entered a third pollution period characterized by "indoor air pollution". A spot inspection report for the air quality of new residential buildings in cities such as Beijing, Guangzhou, Nanjing and the like published by the China architectural decoration Association in 2014 shows that the average standard exceeding rate of formaldehyde is 70-80%, wherein the highest value of the detection is 4.2 times of the national standard. When the concentration of formaldehyde in the indoor air reaches 0.06mg/m³～0.07mg/m³When it is used, children can suffer slight asthma; up to 0.1mg/m³In time, peculiar smell and uncomfortable feeling are generated; up to 0.5mg/m³It can stimulate eyes and cause lacrimation; up to 0.6mg/m³Sometimes, it can cause discomfort or pain in the throat; up to 20mg/m³Nausea, vomiting, chest distress, asthma and even emphysema can be caused; up to 30mg/m³Immediately, it will cause death. Chronic exposure to low doses of formaldehyde can lead to symptoms of chronic respiratory disease, nasopharyngeal carcinoma, colon cancer, menstrual disorders, pregnancy syndromes, leukemia, and decline in memory and intelligence in adolescents. Relevant researches show that the formaldehyde release period of the interior decoration material is as long as 3-15 years, which causes great harm to the life and health of people.

9000 thousands of houses decorated every year in China exist, the maximum standard exceeding of formaldehyde is more than 10 times of the national standard, and indoor decoration pollution is paid attention again by all parties due to the formaldehyde door event. Some formaldehyde detection products also flow into the market in a large number, and the formaldehyde self-testing box is a formaldehyde rapid detection product which is currently favored by consumers, is rapid and convenient, has low cost, but has poor accuracy and can be sampled randomly.

The invention content is as follows:

the utility model aims at providing an accurate quantitative sample, the quantitative sample formaldehyde self-test device that the degree of accuracy is high.

The utility model discloses a quantitative sampling formaldehyde self-test device is implemented through following scheme:

the utility model discloses a quantitative sampling formaldehyde self-test device, it includes case of shooing, gas sample thief, transparent reaction flask, syringe and syringe, the gas sample thief be the exhaust column, the reaction flask its bottleneck plugged by the rubber buffer, be equipped with air inlet and gas outlet on the rubber buffer, even intake pipe and extend to the reaction flask bottom under the air inlet, air inlet and gas outlet are plugged by first stopper and second stopper respectively, still contain phenol reagent in the reaction flask, syringe and gas hose that links to each other around including, gas hose and gas hose, gas hose and exhaust column gas outlet mouth size suit, when gas outlet mouth card goes into gas hose, can chucking gas outlet mouth and sealed gas outlet mouth's lateral wall, the case of shooing be equipped with the platform of shooing on the diapire bench and be equipped with a groove that suits with the reaction flask size, be equipped with the mouth of shooing directly over the platform of shooing of case, the top wall is also provided with a light source, and one side wall of the photographing box is a door capable of being opened and closed.

Preferably, the device also comprises a reagent bottle containing the ammonium ferric sulfate solution.

The utility model discloses a use like this: firstly, pumping quantitative gas to be detected by using an air pumping cylinder, then clamping the gas to be detected into a gas hose of a sample injection needle tube, inserting the needle tube of the sample injection needle tube into the sample injection tube through a first plug (rubber plug) in an air inlet, injecting quantitative gas, opening a second plug, pumping the needle tube after the gas injection is finished, after the gas to be detected reacts with a phenol reagent, pumping a certain amount of ferric ammonium sulfate solution by using an injector, inserting the solution into a reaction bottle through the rubber plug, injecting the solution into the phenol reagent, shaking uniformly, and placing for reaction. And plugging the second plug, then placing the reaction bottle into a photographing groove in a photographing box, turning on a light source, photographing the lower part of the reaction bottle at a photographing opening by a camera, storing the reaction bottle, and comparing the color of the reaction liquid with a color card to judge the concentration of formaldehyde.

The utility model discloses with the gaseous ration of awaiting measuring words, then convert the colour information into picture information (convenient and colour chip contrast) after shooing, convert the formaldehyde content to obtain the testing result of relative accuracy. Additionally, the utility model discloses in arranging reaction solution in inclosed reaction flask, reaction solution can not spill by accident to also can wholly carry out environmental protection when handling and handle, avoid reaction reagent by directly throwing away garbage bin or sewer. Therefore, the utility model provides an economic, quick, simple and reliable formaldehyde self-testing scheme for common families, the market potential of which is huge, and the scheme can become an important driving force for people to attach importance to and effectively treat indoor formaldehyde pollution.

Description of the drawings:

FIG. 1 is a schematic structural diagram of a gas sampler, an injector, a sample injection needle tube and a gas hose of the quantitative sampling formaldehyde self-testing device of the present invention;

FIG. 2 is a schematic view of the structure of a reaction flask;

FIG. 3 is a schematic view of the construction of the photo box;

1. a gas sampler; 2. an injector; 3. a sample injection needle tube; 4. a gas hose; 5. a needle tube; 6. a reaction bottle; 7. a door; 8. a phenolic agent; 9. a photographing box; 10. a rubber plug; 11. an air inlet; 12. an air outlet; 13. an air inlet pipe; 14. a first stopper; 15. a second stopper; 16. a phenolic agent; 17. a photographing table; 18. a photographing groove; 19. and (4) taking a picture.

The specific implementation mode is as follows:

the following examples are further illustrative of the present invention and are not intended to be limiting thereof.

Example 1:

as shown in fig. 1, 2 and 3, the quantitative sampling formaldehyde self-testing device of the embodiment comprises a photographing box 9, a gas sampler 1, a transparent reaction bottle 6, a sample injection needle tube 3 and an injector 2, wherein the gas sampler is an air extraction tube, a bottle opening of the reaction bottle is plugged by a rubber plug 10, the rubber plug is provided with an air inlet 11 and an air outlet 12, the air inlet is connected with an air inlet tube 13 below the air inlet and extends to the bottom of the reaction bottle, the air inlet and the air outlet are respectively plugged by a first plug 14 and a second plug 15, the reaction bottle is further provided with a phenol reagent 16, the sample injection needle tube comprises a needle tube 5 and a gas hose 4 which are connected in front and back, the gas hose 4 is adapted to the size of an air outlet of the air extraction tube, when the air outlet is clamped into the gas hose, the air outlet can be clamped and seal the side wall of the air outlet, the photographing box is provided with a photographing table 17 on the bottom wall, the photographing table is provided with, the top wall right above the photographing table of the photographing box is provided with a photographing opening 19, the top wall is also provided with a light source 8, and one side wall of the photographing box is a door 7 which can be opened and closed.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (2)

1. The utility model provides a ration sample formaldehyde self-test device, its characterized in that, it includes case of shooing, gas sample thief, transparent reaction flask, sample injection needle tubing and syringe, the gas sample thief be the bleeder, its bottleneck of reaction flask plugged by the rubber buffer, be equipped with air inlet and gas outlet on the rubber buffer, even intake pipe and extend to the reaction flask bottom under the air inlet, air inlet and gas outlet are plugged by first stopper and second stopper respectively, still are equipped with phenol reagent in the reaction flask, sample injection needle tubing including the needle tubing and the gas hose that link to each other around, the gas hose adapt to with the bleeder discharge nozzle size, when the discharge nozzle card goes into the gas hose, can go out the gas chucking mouth and seal the lateral wall of discharge nozzle, the case of shooing be equipped with the platform of shooing on the diapire, be equipped with a groove of shooing that suits with the reaction flask size, the top wall directly over the platform of shooing of case is equipped with the mouth of shooing, still is equipped with the light source on the top wall, and a lateral wall of the case of shooing is the door that can open and shut.

2. The formaldehyde self-testing device for quantitative sampling according to claim 1, further comprising a reagent bottle containing an ammonium ferric sulfate solution.

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