CN207096112U - Formaldehyde examination pipe and formaldehyde examination device - Google Patents
Formaldehyde examination pipe and formaldehyde examination device Download PDFInfo
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- CN207096112U CN207096112U CN201721149049.9U CN201721149049U CN207096112U CN 207096112 U CN207096112 U CN 207096112U CN 201721149049 U CN201721149049 U CN 201721149049U CN 207096112 U CN207096112 U CN 207096112U
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- Prior art keywords
- formaldehyde examination
- carrier
- pipe
- formaldehyde
- colour reagent
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Abstract
The utility model is specifically related to formaldehyde examination device, wherein, formaldehyde examination device, including formaldehyde examination pipe, connecting conduit, micro-suction pump and kit, formaldehyde examination pipe, including body, body middle part is double glazing pipe, and both ends are the sealed end of closing in；The middle part of tube cavity is uniformly filled with carrier, and carrier is used to adhering to colour reagent, in tube cavity, silica wool is filled at two sealed ends, silica wool is used to fix carrier, prevents its displacement；The bleeding point of micro-suction pump is connected by connecting conduit with the pump orifice sealing of formaldehyde examination pipe, promotes under test gas to enter by air inlet in formaldehyde examination pipe, and then reacted with the colour reagent on carrier.Formaldehyde examination device of the present utility model, sealing ensures that testing result is accurate before formaldehyde examination pipe uses, micro-suction pump promotes gas to be detected to enter formaldehyde examination pipe, makes to be attached to colour reagent on the carrier order of contact higher with air to be measured holding, and testing result is more accurate.
Description
Technical field
The utility model is specifically related to formaldehyde examination pipe and formaldehyde examination device.
Background technology
Formaldehyde is simplest aldehydes, is a kind of colourless irritative gas soluble in water, has volatile characteristic.First
Aldehyde has become the main factor of room air pollution at present, enjoys public attention in recent years.Indoor formaldehyde is essentially from dress
Repair material and furniture, smoking, fuel combustion and culinary art.Formaldehyde has intense stimulus effect, the formaldehyde of high concentration to skin and mucous membrane
It is all toxic to nervous system, immune system, liver etc..Formaldehyde also has teratogenesis, carcinogenesis, according to epidemiology survey, for a long time
The people of Formaldehyde Exposed, can cause nasal cavity, oral cavity, nasopharynx, throat, skin and gastral cancer, and international cancer research institute is built
View is treated as suspect carcinogen；Long-term low dose Formaldehyde Exposed, it will reduce immunity of organism level, cause nerve to decline
It is weak, there are the symptoms such as drowsiness, failure of memory.
At present, room air, public place air, Drinking Water and food pollution have caused people as caused by formaldehyde
Highest attention, it is also more and more to the report of human health damage about formaldehyde.In recent years, occupy indoor formaldehyde content have by
Year increased trend, average more than six to seven times of standard value, but because formaldehyde is colourless gas and olfactory threshold varies with each individual one
As be 1.07mg/m3, be not easy to be discovered by people, need to be measured more by instrument.
The conventional method of accurate detection formaldehyde in air content is detected by analytical instrument at present, or is used according to national standard
Acetylacetone,2,4-pentanedione AAS, there is the advantages of quantitative accurate, but AAS is by operating conditions such as water-bath or the concentrated sulfuric acids
Limitation, measuring process is complicated, cost is high.In addition common method also has electrochemical assay, and it requires higher to sample pretreatment,
Sensor detection formaldehyde cost is high, short life, and formaldehyde rapid detection box currently on the market needs professional to operate, cost
Height, general family are difficult to popularize.
Occur contacting colour developing with formaldehyde using test paper for formaldehyde detection now, contrasted with colorimetric card so as to test content of formaldehyde
Kit.China application CN201110293944.9 discloses a kind of test paper for formaldehyde detection and preparation method thereof, formaldehyde examination
Test paper is that paper is impregnated to manufactured in developer, the levulinic that developer is newly distilled by 25g ammonium acetates, 3mL glacial acetic acid, 0.3mL
Ketone and 100mL distilled water composition.Using the chromogenic reaction between formaldehyde and ammonium acetate and glacial acetic acid, make and run into formaldehyde and can become
The test paper of color, detection process is very quick, simple to operate, is used suitable for ordinary person.However, this test paper is the problem of presence
Formaldehyde during detection in environment is insufficient contact with test paper, causes measuring accuracy not high；Test paper is the filter for soaking colour reagent
Paper, it is unfavorable for preserving for a long time.
Therefore, quickly designing a kind of for controlling formaldehyde pollution, can protect people's body with the device of Rapid Detection of Formaldehyde
Health, there is important application value.
Utility model content
In order to solve, formaldehyde examination professional method step present in prior art is complicated, cost is high, needs professional
Operation, test paper detection testing result accuracy it is not high the problem of, the utility model on the one hand provide a kind of formaldehyde examination pipe.
The technical problems to be solved in the utility model is achieved through the following technical solutions：
Formaldehyde examination pipe, including body, body middle part is double glazing pipe, and both ends are the sealed end of closing in；
The middle part of tube cavity is uniformly filled with carrier, and carrier is used to adhering to colour reagent, in tube cavity, close close to two
Silica wool is filled at end-blocking, silica wool is used to fix carrier, prevents its displacement；
On the outer surface of body, region corresponding with carrier there is graduation mark, for showing the length of color development area.
Further, in formaldehyde examination pipe of the present utility model, carrier is white carrier, and the filling length of carrier is more than stone
The filling length of English cotton.
On the other hand, the utility model also provides a kind of formaldehyde examination device, including formaldehyde examination pipe, connecting conduit, micro-
Type aspiration pump and kit, wherein, formaldehyde examination pipe includes body, is double glazing pipe in the middle part of body, and both ends are to close up
Sealed end；
The middle part of tube cavity is uniformly filled with carrier, and carrier is used to adhering to colour reagent, in tube cavity, close close to two
Silica wool is filled at end-blocking, silica wool is used for fixed white carrier, prevents its displacement；
The sealed end of formaldehyde examination pipe is opened, and for one end open as air inlet, another end opening is pump orifice,
The bleeding point of micro-suction pump is connected by connecting conduit with the pump orifice sealing of formaldehyde examination pipe, promotes gas to be measured
Body is entered in formaldehyde examination pipe by air inlet, and then is reacted with the colour reagent on carrier；
Kit is used to hold liquid colour reagent, and before detection, liquid colour reagent is instilled in formaldehyde examination pipe.
Further, in formaldehyde examination device of the present utility model, colour reagent is acetylacetone,2,4-pentanedione and the vinegar of pH=5~6
Sour ammonium/hac buffer.
Further, in formaldehyde examination device of the present utility model, connecting conduit is silica gel hose.
Further, in formaldehyde examination device of the present utility model, on the outer surface of the body of formaldehyde examination pipe and carrier
Corresponding region has graduation mark, for showing the length of color development area；The scale initiating terminal of graduation mark is close to air inlet
Side.
Further, in formaldehyde examination device of the present utility model, micro-suction pump be by USB interface power supply and/or
Storage battery power supply.
The beneficial effects of the utility model：
Carrier of the formaldehyde examination pipe of the present utility model by the use of chemically inert carrier as colour reagent, and using
Before, carrier is sealed in body, and dual measure ensure that before testing, the stabilization of visualizingre agent, avoids colour reagent from existing
The problem of reagent caused by remaining time length fails on carrier, and chromogenic reaction sensitivity declines.
Formaldehyde examination device of the present utility model, promote gas to be detected quickly to enter formaldehyde using micro-suction pump and examine
Test tube, and make to be attached to the colour reagent on carrier and keep higher order of contact with air to be measured, avoid existing detection examination
The problem of paper, air containing formaldehyde and insufficient contact test paper.
Formaldehyde examination device of the present utility model, body are provided with graduation mark, are easy to intuitively observe colour developing situation, give
Go out the quantized value of formaldehyde under test gas.
The utility model is described in further details below with reference to drawings and Examples.
Brief description of the drawings
Fig. 1 is the structural representation of formaldehyde examination.
Fig. 2 is the overall structure diagram of formaldehyde examination device.
In figure：1- formaldehyde examinations pipe, 11- bodys, 12- sealed ends, 13- carriers, 14- silica wools, 15- graduation marks, 16- enter
Gas port, 17- pump orifices, 2- connecting conduits, 3- micro-suction pumps, 31- bleeding points, 32-USB interfaces, 33- switches, 4- kits.
Embodiment
For the technological means and effect that the utility model is reached predetermined purpose and taken is expanded on further, below in conjunction with accompanying drawing
And embodiment describes in detail as follows to specific embodiment of the present utility model, architectural feature and its effect.
Embodiment 1：
In order to solve, formaldehyde examination professional method step present in prior art is complicated, cost is high, needs professional
Operation, the problem of testing result accuracy of test paper detection is not high, the utility model provides a kind of formaldehyde examination as shown in Figure 1
Pipe, including body 11, the middle part of body 11 is double glazing pipe, and both ends are the sealed end 12 of closing in.In the inner chamber of body 11
Portion is uniformly filled with carrier 13, and carrier 13 is used to adhering to colour reagent, in the inner chamber of body 11, close to filled stone at two sealed ends 12
English cotton 14, silica wool 14 are used to fix carrier 13, prevent its displacement.Carrier 13 is white carrier, and the filling length of carrier 13 is big
In the filling length of silica wool 14.
It is a kind of chemically inert, porous solia particle that carrier, which is also referred to as carrier, can provide larger inactive surfaces, make
Colour reagent is evenly distributed in its surface with liquid film state.White carrier is prepared by raw material of natural diatomaceous earth, is being calcined
Preceding plus a small amount of sodium carbonate makees cosolvent, and white carrier is obtained after calcining.
Before use, opening sealed end, colour reagent is added on carrier, colour reagent is acetylacetone,2,4-pentanedione and matched reagent box
In ammonium acetate and acetic acid mixed liquor.Air to be measured enters in body, after running into the colour reagent on carrier, it may occur that chemistry
Reaction, material of the generation with yellow, so as to indicate to contain formaldehyde in air.
There is graduation mark 15 on the outer surface of body 11, with 13 corresponding region of carrier, for showing the length of color development area
Degree.The length of color development area is directly proportional to content of formaldehyde, can play a part of quantifying display to a certain extent.
Formaldehyde examination pipe of the present utility model is based on above-mentioned colour developing principle, for contrast and existing test paper for formaldehyde detection,
Carrier of the formaldehyde examination pipe by the use of chemically inert carrier as colour reagent, and before the use, carrier is sealed in body
In, dual measure ensure that before testing, the stabilization of visualizingre agent, avoid colour reagent remaining time length on carrier from causing
Reagent failure, chromogenic reaction sensitivity decline the problem of,
Embodiment 2：
The present embodiment provides a kind of formaldehyde examination device of the formaldehyde examination pipe containing embodiment 1, including formaldehyde examination pipe
1st, connecting conduit 2, micro-suction pump 3 and kit 4, wherein, formaldehyde examination pipe 1 includes body 11, and the middle part of body 11 is hollow
Glass tube, both ends are the sealed end 12 of closing in.
The middle part of the inner chamber of body 11 is uniformly filled with carrier 13, and carrier 13 is used to adhering to colour reagent, in the inner chamber of body 11,
Silica wool 14 is filled at two sealed ends 12, silica wool 14 is used for fixed white carrier, prevents its displacement.
The sealed end 12 of formaldehyde examination pipe 1 is opened, and for one end open as air inlet 16, another end opening is pump orifice 17；
The bleeding point 31 of micro-suction pump 3 is connected by connecting conduit 2 with the sealing of pump orifice 17 of formaldehyde examination pipe 1, promotes gas to be measured
Body is entered in formaldehyde examination pipe 1 by air inlet 16, and then is reacted with the colour reagent on carrier 13.Connecting conduit 2 is silica gel
Flexible pipe.
Kit 4 is used to hold liquid colour reagent, and before detection, liquid colour reagent is instilled in formaldehyde examination pipe 1.It is aobvious
Color reagent is acetylacetone,2,4-pentanedione and ammonium acetate/hac buffer of pH=5~6.
There is graduation mark 15 on the outer surface of the body 11 of formaldehyde examination pipe 1, with 12 corresponding region of carrier, for showing
The length of color development area；The scale initiating terminal of graduation mark 15 is close to the side of air inlet 16.
Micro-suction pump 3 is by USB interface power supply and/or storage battery power supply.There is switch 33 on micro-suction pump 3,
For start and stop micro-suction pump.
Formaldehyde gas acts in pH=6 or so acetic acid-ammonium acetate buffer solution with acetylacetone,2,4-pentanedione, is quickly generated steady
Fixed yellow compound.Coloring matter is basically unchanged in 3h internal absorbances.
Chromogenic reaction process is as follows：
Formaldehyde examination device of the present utility model is based on above-mentioned colour developing principle, contrast and existing test paper for formaldehyde detection and
Speech, carrier of the formaldehyde examination pipe by the use of chemically inert carrier as colour reagent, and before the use, carrier is sealed in pipe
In body, dual measure ensure that before testing, the stabilization of visualizingre agent, avoid colour reagent remaining time length on carrier from making
Into reagent failure, chromogenic reaction sensitivity decline the problem of.
Formaldehyde examination device of the present utility model promotes gas to be detected quickly to enter formaldehyde inspection using micro-suction pump
Test tube, and make to be attached to the colour reagent on carrier and keep higher order of contact with air to be measured, avoid existing detection examination
The problem of paper, air containing formaldehyde and insufficient contact test paper.Formaldehyde examination device, graduation mark is additionally provided with body, be easy to straight
The quantized value observed colour developing situation, provide formaldehyde under test gas seen.
This formaldehyde examination device makes pump orifice and air inlet in use, break the sealed end at disconnected formaldehyde examination pipe both ends first
Ventilation.The colour reagent in kit is instilled in formaldehyde examination pipe.Acetylacetone,2,4-pentanedione is first instilled, then instills acetic acid-ammonium acetate and delays
Rush solution.
With the pump orifice of connecting conduit connection formaldehyde examination pipe and the air entry of micro-suction pump, micro-suction pump passes through
USB interface connects mobile phone or other USB power supply modules.Switch is opened, starts aspiration pump, air passes through in the presence of aspiration pump
Formaldehyde examination pipe, the colour reagent reaction solution on carrier surface is attached in the formaldehyde and pipe in air, concentration of formaldehyde is higher, then
The region developed the color in detection pipe is about long, and the concentration of corresponding detection pipe outer wall is higher.After fixed detection time cut-off, pumping is closed
Switch pump, pull down formaldehyde examination pipe.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (7)
1. formaldehyde examination pipe, including body (11), it is characterised in that：It is double glazing pipe in the middle part of body (11), both ends are
The sealed end (12) of closing in；
The middle part of body (11) inner chamber is uniformly filled with carrier (13), and carrier (13) is used to adhere to colour reagent, and body (11) is interior
In chamber, close to two sealed ends (12) place filling silica wool (14), silica wool (14) its displacement is prevented for fixing carrier (13)；
On the outer surface of body (11), region corresponding with carrier (13) there is graduation mark (15), for showing color development area
Length.
2. formaldehyde examination pipe according to claim 1, it is characterised in that：Carrier (13) is white carrier, carrier (13)
Fill the filling length that length is more than silica wool (14).
3. formaldehyde examination device, it is characterised in that：Including formaldehyde examination pipe (1), connecting conduit (2), micro-suction pump (3) and examination
Agent box (4), wherein, formaldehyde examination pipe (1) includes body (11), is double glazing pipe in the middle part of body (11), and both ends are to receive
The sealed end (12) of mouth；
The middle part of body (11) inner chamber is uniformly filled with carrier (13), and carrier (13) is used to adhere to colour reagent, and body (11) is interior
It is used for fixed white carrier in chamber, close to two sealed ends (12) place filling silica wool (14), silica wool (14), prevents its displacement；
The sealed end (12) of formaldehyde examination pipe (1) is opened, and for one end open as air inlet (16), another end opening is pump orifice
(17),
The bleeding point (31) of micro-suction pump (3) is sealed by the pump orifice (17) of connecting conduit (2) and formaldehyde examination pipe (1) to be connected
It is logical, promote under test gas to enter by air inlet (16) in formaldehyde examination pipe (1), so that it is anti-with the colour reagent on carrier (13)
Should；
Kit (4) is used to hold liquid colour reagent, and before detection, liquid colour reagent is instilled in formaldehyde examination pipe (1).
4. formaldehyde examination device according to claim 3, it is characterised in that：Colour reagent is acetylacetone,2,4-pentanedione and pH=5~6
Ammonium acetate/hac buffer.
5. formaldehyde examination device according to claim 3, it is characterised in that：Connecting conduit (2) is silica gel hose.
6. formaldehyde examination device according to claim 3, it is characterised in that：Outside the body (11) of formaldehyde examination pipe (1)
On surface, region corresponding with carrier (13) there is graduation mark (15), for showing the length of color development area；Graduation mark (15)
Scale initiating terminal is close to the side of air inlet (16).
7. formaldehyde examination device according to claim 3, it is characterised in that：Micro-suction pump (3) is to be supplied by USB interface
Electricity and/or storage battery power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149049.9U CN207096112U (en) | 2017-09-08 | 2017-09-08 | Formaldehyde examination pipe and formaldehyde examination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149049.9U CN207096112U (en) | 2017-09-08 | 2017-09-08 | Formaldehyde examination pipe and formaldehyde examination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096112U true CN207096112U (en) | 2018-03-13 |
Family
ID=61539191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721149049.9U Expired - Fee Related CN207096112U (en) | 2017-09-08 | 2017-09-08 | Formaldehyde examination pipe and formaldehyde examination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207096112U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924443A (en) * | 2021-01-27 | 2021-06-08 | 上海化工院检测有限公司 | Wet wall type gas detection device |
| CN113109326A (en) * | 2020-01-09 | 2021-07-13 | 丰田纺织株式会社 | Aldehyde measuring device and acetaldehyde measuring tube |
-
2017
- 2017-09-08 CN CN201721149049.9U patent/CN207096112U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109326A (en) * | 2020-01-09 | 2021-07-13 | 丰田纺织株式会社 | Aldehyde measuring device and acetaldehyde measuring tube |
| CN113109326B (en) * | 2020-01-09 | 2024-02-06 | 丰田纺织株式会社 | Aldehyde measuring device and acetaldehyde measuring tube |
| CN112924443A (en) * | 2021-01-27 | 2021-06-08 | 上海化工院检测有限公司 | Wet wall type gas detection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20190908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |