CN207457080U - Methylene oxide detecting instrument - Google Patents
Methylene oxide detecting instrument Download PDFInfo
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- CN207457080U CN207457080U CN201721687714.XU CN201721687714U CN207457080U CN 207457080 U CN207457080 U CN 207457080U CN 201721687714 U CN201721687714 U CN 201721687714U CN 207457080 U CN207457080 U CN 207457080U
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- detection
- light source
- detecting instrument
- methylene oxide
- photo
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Abstract
The utility model is related to a kind of methylene oxide detecting instrument, including detection storehouse, detection film, light source, photo-sensitive cell, signal processing circuit, main control chip, display screen and casing；The removable middle part for being inserted in detection storehouse of detection film, and detection storehouse is separated into two cavitys, light source is located in one of in cavity, and photo-sensitive cell is located therein in another cavity；A blow vent is respectively provided on two cavitys, detection film is the formaldehyde color-changing membrane of light transmission；Signal processing circuit, main control chip are located in casing, and display location is in the surface of casing；Photo-sensitive cell connects main control chip after being connected with signal processing circuit, light source and display screen connect main control chip respectively；In use, the light of light source transmitting is radiated at through detection film on photo-sensitive cell.The methylene oxide detecting instrument of the utility model is easy to operate, and testing result is accurate.
Description
Technical field
The utility model is related to a kind of gas detecting instrument, especially a kind of instrument for detecting formaldehyde belongs to gas detection skill
Art field.
Background technology
With the continuous improvement of people's environmental consciousness, formaldehyde examination has been subjected to the close attention of society.City at present
Formaldehyde examination instrument on field is very different, the method that lower-cost detection device uses electrochemistry, but serious interference, surveys
It is inaccurate to measure result.Using test paper color development, spectrophotometer method, measurement result is more accurate, but operates relatively complicated.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of easy to operate, accurate formaldehyde examinations of testing result
Instrument.
A kind of technical solution that the utility model proposes to solve above-mentioned technical problem is：A kind of methylene oxide detecting instrument, including
Detect storehouse, detection film, light source, photo-sensitive cell, signal processing circuit, main control chip, display screen and casing；The detection film is removable
Formula is inserted in the middle part in detection storehouse, and the detection storehouse is separated into two cavitys, and the light source is located in one of in cavity,
The photo-sensitive cell is located therein in another cavity；A blow vent is respectively provided on described two cavitys, the detection film is
The formaldehyde color-changing membrane of light transmission；The signal processing circuit, main control chip are located in casing, and the display location is in the table of casing
Face；The photo-sensitive cell connects main control chip after being connected with signal processing circuit, the light source and display screen connect master control respectively
Chip；In use, the light of the light source transmitting is radiated at through detection film on photo-sensitive cell.
Methylene oxide detecting instrument further includes air pump, and one of blow vent is connected with the air inlet of air pump.
Above-mentioned light source is LED light source.
Above-mentioned photo-sensitive cell is ccd image sensor or cmos image sensor.
Above-mentioned detection storehouse is cylinder, and the detection film is circle, and the edge of the detection film is equipped with plastic hoop.
Above-mentioned light source is located at one end away from the detection film in the cavity, and the photo-sensitive cell is located at the cavity
Interior one end away from the detection film.
Above-mentioned methylene oxide detecting instrument further includes power supply and button；The power supply is located in casing, and the button is located at casing
Surface；The power supply and button connect main control chip respectively.
Above-mentioned methylene oxide detecting instrument further includes the cover body for being located at the cabinet top；The detection storehouse and air pump are located at cover body
It is interior.
Above-mentioned cover body is equipped with air inlet port and air outlet, and the air outlet is connected with the gas outlet of air pump, institute
Air inlet port is stated with another blow vent to be connected；The air inlet port and air outlet are equipped with sealing cover；The detection storehouse
It plugs and is equipped with sealing-plug at detection film.
The utility model has positive effect：The methylene oxide detecting instrument of the utility model sets closed air circulation empty
Between, using special colour developing consumptive material, the colour developing consumptive material light intensity principle different with wavelength is penetrated using light, detects optical signal, from
And obtain the concentration of formaldehyde.Detection process high degree of automation, it is only necessary to replace consumptive material manually every time（Detect film）, instrument
Use can be held, suitable for various occasions.The methylene oxide detecting instrument detection storehouse of the utility model and air pump are located in cover body, with electricity
Gas part separates, and easy access is replaced.
Description of the drawings
The utility model is described in further detail with reference to Figure of description：
Fig. 1 is the detection storehouse internal structure schematic diagram of the methylene oxide detecting instrument of embodiment 1；
Fig. 2 is the structure diagram of the methylene oxide detecting instrument of embodiment 1.
The mark of above-mentioned attached drawing is as follows：
Detection storehouse 1, detection film 2, plastic hoop 21, light source 3, photo-sensitive cell 4, blow vent 5, air pump 6, display screen 7, button 8,
Casing 91, cover body 92, sealing cover 93, sealing-plug 94.
Specific embodiment
Embodiment 1
The methylene oxide detecting instrument of the present embodiment, at detection storehouse 1, detection film 2, light source 3, photo-sensitive cell 4, air pump 6, signal
Reason circuit, main control chip, display screen 7, power supply, button 8, casing 91 and the cover body 92 for being located at 91 top of casing.
The removable middle part for being inserted in detection storehouse 1 of detection film 2, and detection storehouse 1 is separated into two cavitys.Light source 3 is located at
In one of cavity, light source 3 is that LED light source photo-sensitive cell 4 is located therein in another cavity, and photo-sensitive cell 4 is ccd image
Sensor.Light source 3 is located at one end of the separate detection film 2 in cavity, and photo-sensitive cell 4 is located at the separate detection film 2 in cavity
One end.A blow vent 5 is respectively provided on two cavitys, one of blow vent 5 is connected with the air inlet of air pump 6.Detect storehouse 1
For cylinder, detection film 2 is circle, and the edge of detection film 2 is equipped with plastic hoop 21.Detection film 2 is the formaldehyde color-changing membrane of light transmission（Thoroughly
Main color composition is phenolphthalein on light film）.In use, the light that light source 3 emits is radiated at through detection film 2 on photo-sensitive cell 4.
Photo-sensitive cell 4 connects main control chip after being connected with signal processing circuit, light source 3, air pump 6, power supply, are pressed display screen 7
Key 8 connects main control chip respectively.Detection storehouse 1 and air pump 6 are located in cover body 92.Signal processing circuit, main control chip and power supply position
In in casing 91, display screen 7 and button 8 are located at the surface of casing 91.Cover body 92 is equipped with air inlet port and air outlet, outlet
Port is connected with the gas outlet of air pump 6, and air inlet port is connected with another blow vent 5.On air inlet port and air outlet
Equipped with sealing cover 93.Sealing cover 93 is screwed on air inlet port and air outlet.Detection storehouse 1 plugs and is equipped with sealing at detection film 2
Plug 94.Sealing-plug 94 is made of elastic rubber.Signal processing circuit is using the ccd signal data acquisition of the prior art and processing electricity
Road.
The methylene oxide detecting instrument of the present embodiment when in use, removes sealing cover 93 and sealing-plug 94, and new detection film 2 is inserted
In detection storehouse 1,8 unlatching instruments are pushed button, instrument are placed in the space for needing to detect formaldehyde, the air in space exists
Under the action of air pump 6, the flowing in detection storehouse 1 so that detection film 2 changes colour, and after a period of time, instrument automatically turns on light source 3, light
Line is radiated at through detection film 2 on photo-sensitive cell 4, and photo-sensitive cell 4 is acquired light intensity and wavelength signals after processing by spy
Different algorithm draws the detection data of concentration of formaldehyde.
Embodiment 2
The rest part of the present embodiment is same as Example 1, and difference is：Photo-sensitive cell 4 is cmos image sensing
Device, cmos signal data acquisition and process circuit of the signal processing circuit using the prior art.
Embodiment 3
The rest part of the present embodiment is same as Example 1, and difference is：Do not include air pump 6, it can be with external gas
Pump is used cooperatively.
Embodiment 4
The rest part of the present embodiment is same as Example 1, and difference is：Do not include button 8, display screen 7 is liquid
Brilliant capacitance touch screen.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and is not to this reality
With the restriction of new embodiment.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to obvious changes or variations that the spirit of the utility model is extended out still in the scope of protection of the utility model
Among.
Claims (9)
1. a kind of methylene oxide detecting instrument, which is characterized in that including detecting storehouse（1）, detection film（2）, light source（3）, photo-sensitive cell（4）、
Signal processing circuit, main control chip, display screen（7）And casing（91）；The detection film（2）It is removable to be inserted in detection storehouse（1）
Middle part, and by the detection storehouse（1）It is separated into two cavitys, the light source（3）It is located in one of in cavity, it is described photosensitive
Element（4）It is located therein in another cavity；A blow vent is respectively provided on described two cavitys（5）, the detection film（2）It is
The formaldehyde color-changing membrane of light transmission；The signal processing circuit, main control chip are located at casing（91）It is interior, the display screen（7）Positioned at machine
Shell（91）Surface；The photo-sensitive cell（4）Main control chip, the light source are connected after being connected with signal processing circuit（3）With it is aobvious
Display screen（7）Main control chip is connected respectively；In use, the light source（3）The light of transmitting passes through detection film（2）It is radiated at photo-sensitive cell
（4）On.
2. methylene oxide detecting instrument according to claim 1, it is characterised in that：Further include air pump（6）, one of blow vent
（5）With air pump（6）Air inlet be connected.
3. methylene oxide detecting instrument according to claim 2, it is characterised in that：The light source（3）It is LED light source.
4. methylene oxide detecting instrument according to claim 2, it is characterised in that：The photo-sensitive cell（4）It is ccd image sensor
Or cmos image sensor.
5. methylene oxide detecting instrument according to claim 2, it is characterised in that：The detection storehouse（1）For cylinder, the detection
Film（2）For circle, the detection film（2）Edge be equipped with plastic hoop（21）.
6. methylene oxide detecting instrument according to claim 2, it is characterised in that：The light source（3）It is remote in the cavity
From the detection film（2）One end, the photo-sensitive cell（4）The separate detection film in the cavity（2）One end.
7. the methylene oxide detecting instrument according to any one of claim 2 to 6, it is characterised in that：Further include power supply and button
（8）；The power supply is located at casing（91）It is interior, the button（8）Positioned at casing（91）Surface；The power supply and button（8）Point
Main control chip is not connected.
8. methylene oxide detecting instrument according to claim 7, it is characterised in that：It further includes and is located at the casing（91）Top
Cover body（92）；The detection storehouse（1）And air pump（6）Positioned at cover body（92）It is interior.
9. methylene oxide detecting instrument according to claim 8, it is characterised in that：The cover body（92）It is equipped with air inlet port and goes out
Gas port, the air outlet and air pump（6）Gas outlet be connected, the air inlet port and another blow vent（5）It is connected
It is logical；The air inlet port and air outlet are equipped with sealing cover（93）；The detection storehouse（1）Plug detection film（2）Place is equipped with close
Blocking（94）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687714.XU CN207457080U (en) | 2017-12-07 | 2017-12-07 | Methylene oxide detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687714.XU CN207457080U (en) | 2017-12-07 | 2017-12-07 | Methylene oxide detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457080U true CN207457080U (en) | 2018-06-05 |
Family
ID=62275897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721687714.XU Active CN207457080U (en) | 2017-12-07 | 2017-12-07 | Methylene oxide detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207457080U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781475A (en) * | 2019-01-08 | 2019-05-21 | 贵州大学 | A kind of indoor formaldehyde detector completely cutting off outside air interference |
| CN110261372A (en) * | 2019-03-18 | 2019-09-20 | 华南理工大学 | A kind of cooking oil fume VOCs precision automonitor |
| CN110261372B (en) * | 2019-03-18 | 2024-05-10 | 华南理工大学 | Accurate automatic monitor of diet oil smoke VOCs |
-
2017
- 2017-12-07 CN CN201721687714.XU patent/CN207457080U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781475A (en) * | 2019-01-08 | 2019-05-21 | 贵州大学 | A kind of indoor formaldehyde detector completely cutting off outside air interference |
| CN110261372A (en) * | 2019-03-18 | 2019-09-20 | 华南理工大学 | A kind of cooking oil fume VOCs precision automonitor |
| CN110261372B (en) * | 2019-03-18 | 2024-05-10 | 华南理工大学 | Accurate automatic monitor of diet oil smoke VOCs |
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