CN108918363B - Gas auxiliary detection device - Google Patents
Gas auxiliary detection device Download PDFInfo
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- CN108918363B CN108918363B CN201810247474.4A CN201810247474A CN108918363B CN 108918363 B CN108918363 B CN 108918363B CN 201810247474 A CN201810247474 A CN 201810247474A CN 108918363 B CN108918363 B CN 108918363B
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 239000011521 glass Substances 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 claims description 11
- 239000005871 repellent Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 abstract description 24
- 239000002390 adhesive tape Substances 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 26
- 239000008187 granular material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003760 hair shine Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G01N15/075—
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the technical field of safety protection, and discloses a gas auxiliary detection device which comprises a support and a box body, wherein the box body is fixed on the support and is provided with an inner cavity and an air inlet rod; the air inlet rod is provided with an annular cavity, an air inlet is arranged on the annular cavity, a high-pressure air box is fixed on the bracket, baffles and an air bag are arranged on two side walls of the inner cavity, a first chain wheel is fixed on the rotating shaft, and an infrared lamp is arranged at the bottom of each baffle; the bottom of the inner cavity is provided with an opening and a detection box, the detection box is provided with a first glass plate, a photosensitive resistor is arranged in the detection box, and the photosensitive resistor is electrically connected with an indicator light; the support is provided with an inner gearing ratchet structure, the inner gearing ratchet structure comprises an outer ratchet, a driving pawl, a non-return pawl and a driving wheel, a second chain wheel is fixed in the driving wheel, a rotary disc is fixed at the outer edge of the outer ratchet, a second glass plate is arranged on the rotary disc, a transparent adhesive tape is arranged on the second glass plate, and the adhesive surface of the transparent adhesive tape faces towards the inner cavity. The invention has simple structure and can detect the air without filtering particles.
Description
Technical Field
The invention relates to the technical field of safety protection, in particular to a gas auxiliary detection device.
Background
Air, commonly known as "life gases," requires breathing every day. However, different environments contain different amounts of impurities in the air. These impurities are certainly harmful to human body, and cannot be seen by naked eyes, so that a detection device is needed to detect whether the content of the impurities in the air is harmful to human health.
The detection of gas is generally to detect PM2.5, and PM2.5 is considered to be a criterion for determining harmfulness of human body. In fact, large particle dust exceeding PM2.5 in the air is harmful to human health, and respiratory diseases can be caused by excessive inhalation of large particle dust, but the detection of PM2.5 filters the large particle dust, so that the content of the large particles in the air cannot be clearly detected. Therefore, the filtering cannot be performed to detect the content of particles in the air, and the detection of particles in the air is affected after large particles are filtered. Therefore, in order to improve the accuracy of detecting the content of particles in the air, a gas detecting apparatus that does not filter large particles in the air is required.
Disclosure of Invention
The invention aims to provide a gas auxiliary detection device, which is used for detecting the particle content in air without filtering particles so as to improve the detection accuracy.
In order to achieve the purpose, the technical scheme of the invention is as follows: a gas auxiliary detection device comprises a support and a box body, wherein the box body is fixed on the support and is provided with an inner cavity and a hollow air inlet rod communicated with the inner cavity; the side wall of the air inlet rod is provided with an annular cavity, an air inlet which inclines towards the inner cavity is arranged on the annular cavity, and a high-pressure air tank is fixed on the bracket and is communicated with the annular cavity through an electromagnetic valve; the two side walls of the inner cavity are provided with a baffle and an air bag positioned below the baffle, the baffle is rotatably connected with the box body through a rotating shaft, a first chain wheel is fixed on the rotating shaft, the air bag is communicated with the inner cavity, and the bottom of the baffle is provided with an infrared lamp; the bottom of the inner cavity is provided with an opening and a detection box fixed on the bracket, the detection box is provided with a first glass plate with a gap between the first glass plate and the opening, a photosensitive resistor is arranged in the detection box, and the photosensitive resistor is electrically connected with an indicator lamp; be equipped with interior gearing ratchet structure on the support, interior gearing ratchet includes outer ratchet, initiative pawl, non return pawl and action wheel, initiative pawl and non return pawl are all fixed on the action wheel, and the action wheel internal fixation has the second sprocket, second sprocket and first sprocket pass through the chain and connect, outer ratchet outer fringe is fixed with the carousel of being connected with the support rotation, be equipped with a plurality of second glass boards that can seal the open-ended on the carousel, be equipped with the scotch tape on the second glass board, the glutinous face of scotch tape is towards the inner chamber.
The principle of the invention is as follows: the air inlet rod, the annular cavity and the air inlet form an air amplifier, and the opening of the inner cavity is initially closed by the second glass plate. The electromagnetic valve is opened at intervals, high-pressure gas in the high-pressure gas box is introduced into the annular cavity and enters the air inlet rod from the air inlet, so that high-speed airflow is formed in the air inlet pipe, and the external air is brought into the inner cavity by the high-speed airflow. The air entering the inner cavity can firstly impact the sticky surface of the second glass plate to make particles adhere to the sticky surface, and then enters the air bag through the inner cavity.
The gasbag fills a large amount of gas and takes place the inflation to upwards promote the baffle, the gasbag inflation to a certain extent can make the baffle seal the intercommunication department of air inlet rod with the inner chamber, so, make the quantity of gas that the air entered into the inner chamber certain. And when the baffle closed the intercommunication department of air inlet rod and inner chamber, the infrared lamp was towards the inner chamber bottom, and the light of infrared lamp shines on the photo resistance through gluing face, second glass board and first glass board this moment. Because the different certain light that can block of granule volume that adheres at the adhesion face, the light shines the luminance of photo resistance different, and the resistance value of photo resistance can change different, makes the luminance of pilot lamp change from the electric current that changes the pilot lamp, just can measure the content of granule according to different luminance.
At baffle pivoted in-process that makes progress, the baffle can drive first sprocket and rotate, and first sprocket can pass through chain pulling second sprocket forward and rotate, and in the same way, baffle pivoted in-process downwards, second sprocket can the antiport. When the second chain wheel rotates forwards, the inner meshing ratchet wheel structure idles, so that the rotating disc cannot rotate; when the second chain wheel rotates in the direction, the inner meshing ratchet wheel structure can drive the rotating disc to rotate, so that the rotating disc drives the transparent adhesive tape to be replaced.
The invention has the beneficial effects that:
1. through the air inlet pole, the annular chamber, the air inlet constitutes air amplifier, accelerate the speed that the air enters into the inner chamber, and the air strikes the granule adhesion in the adhesion face of scotch tape in with the air, thereby reach the luminance that changes light and pass through first glass board and second glass board, in order to reach the purpose that detects the content of granule in the air, compare with traditional detection mode, need not filter the granule, the content of granule reduces in having avoided the air, thereby the precision of granule content in the detection air has been improved.
2. Under the cooperation of the inner-meshed ratchet wheel structure and the first chain wheel, the transparent adhesive tape can be replaced, and the repeated use of the transparent adhesive tape is avoided.
3. The gas quantitative detection device is simple in structure, the gas entering the inner cavity is quantified through the matching of the air bag and the baffle, and the air in the inner cavity and the external air are prevented from flowing, so that the purpose of quantitative detection is achieved.
On the basis of the basic scheme:
further: and a controller electrically connected with the electromagnetic valve is fixed on the detection box, and the controller can control the electromagnetic valve to be opened according to time periods. Under the effect of controller, can make the solenoid valve open according to the time quantum to make whole device detect the air in the time quantum, reach the purpose that different time quantums detected.
Further: and a push rod capable of pushing the baffle to rotate downwards is arranged in the air inlet rod. The catch bar conveniently pushes the baffle plates, so that the two baffle plates rotate downwards, and a gap is generated to enable air in the inner cavity and the air bag to escape.
Further: and the upper part of the baffle is provided with a drainage groove. The air entering the vacuum cleaner is drained through the drainage grooves, and meanwhile, when particles are adhered to the baffle, the particles on the baffle can be conveniently blown into the inner cavity by air.
Further: and the sticky surface is provided with oil-repellent paper. The oil-repellent paper can protect the sticky layer and prevent the sticky layer from adhering other impurities.
Further: the second glass plate is tightly attached to the box body. When the carousel area second glass board rotated, oleophobic paper can reduce the friction of adhesive tape and box to can also scrape oleophobic paper down with the effect that second glass hugged closely under the box, make to glue the face and leak out.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a gas-assisted detection apparatus;
fig. 2 is a schematic structural view of an internal ratchet mechanism according to an embodiment.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
reference numerals in the drawings of the specification include: the device comprises a box body 1, an air inlet rod 2, an annular cavity 3, an air inlet 4, a second glass plate 5, an inner cavity 6, a chain 7, a rotary disc 8, a photoresistor 9, a detection box 10, an air bag 11, an infrared lamp 12, a baffle 13, an outer ratchet wheel 14, a driving pawl 15, a driving wheel 16, a non-return pawl 17, a second chain wheel 18, a controller 19, a high-pressure air box 20, a first chain wheel 21 and a gap 22.
Example (b):
as shown in the attached figure 1, the gas auxiliary detection device comprises a support and a box body 1, wherein the box body 1 is fixed on the support through a fastening bolt, and the box body 1 is provided with an inner cavity 6 and a hollow air inlet rod 2 communicated with the inner cavity 6.
As shown in the attached drawings 1 and 2, an inner meshing ratchet structure is arranged on the support and comprises an outer ratchet 14, a driving pawl 15, a non-return pawl 17 and a driving wheel 16, the driving pawl 15 and the non-return pawl 17 are fixed on the driving wheel 16, a second chain wheel 18 is fixed in the driving wheel 16, a chain 7 is arranged on a first chain wheel 21, the chain 7 is sleeved on the peripheries of the first chain wheel 21 and the second chain wheel 18, and the first chain wheel 21 drives the second chain wheel 18 to rotate through the chain 7. The outer edge of the outer ratchet wheel 14 is fixedly provided with a rotating disc 8 which is rotatably connected with the support, a tensioning chain wheel is arranged between the first chain wheel 21 and the second chain wheel 18, when the first chain wheel 21 rotates under the rotation of the rotating shaft, the chain 7 drives the second chain wheel 18 to rotate, the second chain wheel 18 positively rotates to drive the driving wheel 16 to rotate, the driving pawl 15 and the non-return pawl 17 cannot push the outer ratchet wheel 14 to rotate, and the driving wheel 16 idles with the outer ratchet wheel 14. When the second chain wheel 18 rotates reversely, the driving wheel 16 is driven to rotate, the driving pawl 15 and the non-return pawl 17 push the outer ratchet wheel 14 to rotate, and therefore the driving wheel 16 drives the outer ratchet wheel 14 to rotate. So that the outer ratchet 14 carries the turntable 8. A plurality of second glass plates 5 are fixed on the rotary table 8, the rotary table 8 can drive the second glass plates 5 to extend into the gap 22 to seal the opening when rotating, and the first glass plates and the second glass plates 5 are both made of ultra-white glass. The second glass plate 5 is provided with a transparent adhesive tape, and the adhesive surface of the transparent adhesive tape faces the inner cavity 6.
In order to control the solenoid valve to be able to open in time periods, the solenoid valve is electrically connected to a controller 19 fixed to the test box 10, the controller 19 being of the AHC15A type. In order to discharge the gas in the inner cavity 6 conveniently, a push rod capable of pushing the baffle 13 to rotate downwards is connected in the gas inlet rod 2 in a sliding mode, and a drainage groove for conducting gas drainage is further formed in the baffle 13.
In order to protect the sticky surface, the oil-repellent paper is arranged on the sticky surface, and the second glass plate 5 is tightly attached to the box body 1 in order to scrape the oil-repellent paper. In the process that second glass plate 5 rotates along with carousel 8, oleophobic paper not only can reduce the friction of second glass plate 5 with box 1, can also avoid gluing the viscidity of face and weakening.
The specific implementation process is as follows:
initially, the second glass plate 5 seals the opening and the indicator and infrared lights 12 are turned on. The controller 19 controls the solenoid valve to open every 10 minutes, and the opened solenoid valve will lead the high-pressure gas in the high-pressure gas tank 20 into the annular cavity 3, and the high-pressure gas will enter into the air inlet rod 2 through the air inlet 4 and drive the external air into the inner cavity 6 through the air inlet rod 2. The gas entering the inner cavity 6 can firstly impact the sticky surface at the bottom, the sticky surface can adhere particles in the air, and the flowing air can enter the air bag 11 to expand the air bag 11. The air bag 11 is expanded to push the baffle 13 upwards and enable the baffle 13 to rotate upwards, the upward rotation of the baffle 13 can seal the communication position of the air inlet rod 2 and the inner cavity 6, so that external air is blocked by the baffle 13 and cannot enter the inner cavity 6 any more, and the air entering the inner cavity 6 is quantitative.
At this time, the infrared lamp 12 at the lower portion of the baffle 13 is directed toward the adhesive surface. The infrared lamp 12 is turned on, and the light of the infrared lamp 12 irradiates the photoresistor 9 through the transparent adhesive tape, the first glass plate and the second glass plate 5. Since particles in the air adhere to the sticky surface, the particles block the light. Because the blocking of granule, the intensity that infrared lamp 12 shines on photo resistance 9 is different, and photo resistance 9 receives the intensity difference of light and can produce different resistance values, and different resistance values can make the electric current variation of flow direction indicator to make the luminance of indicator different. The larger the resistance value of the photoresistor 9 is, the larger the illumination intensity is, the fewer particles are adhered to the sticky surface, and the fewer the particle content in the air is; the smaller the resistance of the photo resistor 9, the lower the light intensity, the more particles are adhered to the adhesive surface, and the more particles are contained in the air.
In the process that the baffle 13 rotates upwards, the baffle 13 can also drive the rotating shaft and the first chain wheel 21 to rotate, so that the first chain wheel 21 can drive the second chain wheel 18 to rotate in the forward direction through the chain 7, the forward rotation of the second chain wheel 18 can enable the driving disc to idle with the outer ratchet wheel 14 under the action of the driving pawl 15 and the non-return pawl 17, and the outer ratchet wheel 14 cannot drive the rotating disc 8 to rotate. When the gas in the inner chamber 6 needs to be deflated, the push rod is pushed downwards, so that the push rod can push the baffle 13 to rotate downwards, the baffle 13 rotates downwards to drive the rotating shaft and the first chain wheel 21 to rotate reversely, the first chain wheel 21 can drive the second chain wheel 18 to rotate reversely through the chain 7, the driving disc can drive the outer ratchet wheel 14 to rotate under the action of the driving pawl 15 and the non-return pawl 17, and the outer ratchet wheel 14 can drive the rotary disc 8 to rotate. The rotating turntable 8 will take the second glass plate 5 sealing the opening and seal the opening with another second glass plate 5 on the turntable 8. Since the adhesive surface of the scotch tape on the second glass plate 5 is adhered with a plurality of particles, which can affect the particle detection in the second air, the scotch tape is replaced by replacing the second glass plate 5. When the second glass plate 5 rotates under the action of the rotating disk 8, the second glass plate 5 is tightly attached to the box body 1, and the friction force between the second glass plate 5 and the box body 1 is reduced under the action of the oil-repellent paper, and when the second glass plate 5 rotates under the action of the box body 1 and seals the opening, the oil-repellent paper is scraped off by the box body 1.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.
Claims (6)
1. The gas auxiliary detection device is characterized by comprising a support and a box body, wherein the box body is fixed on the support and is provided with an inner cavity and a hollow air inlet rod communicated with the inner cavity; the side wall of the air inlet rod is provided with an annular cavity, an air inlet which inclines towards the inner cavity is arranged on the annular cavity, and a high-pressure air tank is fixed on the bracket and is communicated with the annular cavity through an electromagnetic valve; the two side walls of the inner cavity are provided with baffles and air bags positioned below the baffles, the sum of the lengths of the two baffles is equal to the length of the box body, the two baffles can seal the box body, the baffles are rotatably connected with the box body through rotating shafts, first chain wheels are fixed on the rotating shafts, the air bags are communicated with the inner cavity, infrared lamps are arranged at the bottoms of the baffles, when the air bags expand, the air bags can push the baffles to rotate upwards, the baffles can drive the rotating shafts and the first chain wheels to rotate, and the infrared lamps are aligned to the bottom of the inner cavity; the bottom of the inner cavity is provided with an opening and a detection box fixed on the bracket, the detection box is provided with a first glass plate with a gap between the first glass plate and the opening, a photosensitive resistor is arranged in the detection box, and the photosensitive resistor is electrically connected with an indicator lamp; be equipped with interior gearing ratchet structure on the support, interior gearing ratchet includes outer ratchet, initiative pawl, non return pawl and action wheel, initiative pawl and non return pawl are all fixed on the action wheel, and the action wheel internal fixation has the second sprocket, second sprocket and first sprocket pass through the chain and connect, outer ratchet outer fringe is fixed with the carousel of being connected with the support rotation, be equipped with a plurality of second glass boards that can seal the open-ended on the carousel, be equipped with the scotch tape on the second glass board, the glutinous face of scotch tape is towards the inner chamber.
2. The gas-assisted detection device according to claim 1, wherein a controller electrically connected to the solenoid valve is fixed to the detection box, and the controller controls the solenoid valve to be opened at regular intervals.
3. The gas-assisted detection device according to claim 2, wherein a push rod capable of pushing the baffle to rotate downwards is arranged in the gas inlet rod.
4. The gas-assisted detection device according to claim 3, wherein the baffle plate is provided with a drainage groove at the upper part.
5. The gas-assisted detection device of claim 4, wherein the tacky surface is provided with an oil-repellent paper.
6. The gas assist detection device of claim 5, wherein the second glass plate is in close proximity to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247474.4A CN108918363B (en) | 2018-03-23 | 2018-03-23 | Gas auxiliary detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247474.4A CN108918363B (en) | 2018-03-23 | 2018-03-23 | Gas auxiliary detection device |
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| CN108918363A CN108918363A (en) | 2018-11-30 |
| CN108918363B true CN108918363B (en) | 2020-06-30 |
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| CN112121607A (en) * | 2020-09-15 | 2020-12-25 | 南京将犀网络科技有限公司 | Use environmental protection type industrial waste gas treatment auxiliary device of thing networking engineering |
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| CN108918363A (en) | 2018-11-30 |
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