CN113495068A - Smoke particulate component detection device based on double-pulse laser-induced breakdown spectroscopy - Google Patents
Smoke particulate component detection device based on double-pulse laser-induced breakdown spectroscopy Download PDFInfo
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- 239000000779 smoke Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000001299 laser-induced shock wave plasma spectroscopy Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 239000013618 particulate matter Substances 0.000 claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 11
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 38
- 238000012545 processing Methods 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
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- 238000002156 mixing Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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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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- 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
- G01N15/075—Investigating concentration of particle suspensions by optical means
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Abstract
The invention belongs to the technical field of smoke particulate matter detection, and particularly relates to a smoke particulate matter component detection device based on double-pulse laser-induced breakdown spectroscopy, aiming at the problems that the general measurement means in the prior art are complicated, complex, high in cost and difficult to achieve standard measurement, and smoke is not filtered, the invention provides a scheme which comprises a machine body, a first fixed laser body, a second fixed laser body, a delayer, a first total reflection mirror, a second total reflection mirror, a spectrometer, an enhanced charge coupler, an optical fiber probe, a computer, an air inlet, a focusing mirror, an air filter membrane, a rotary table and an air pump. The smoke particulate component detection device based on the laser-induced breakdown spectroscopy can quickly detect the components of particulate matters in smoke, has the advantages of continuous monitoring and no need of preprocessing a sample, can replace an air filter membrane, and can filter smoke.
Description
Technical Field
The invention relates to the technical field of smoke particulate matter detection, in particular to a smoke particulate matter component detection device based on double-pulse laser-induced breakdown spectroscopy.
Background
With the rapid development of industry and economy, the population is rapidly increased, and the environmental pollution problem is increasingly serious. One of the main reasons of air pollution in China is the emission of coal-fired flue gas, coal in a boiler burns to generate a large amount of harmful dust containing heavy metals, and dust particles can enter the body along with the breathing of people. Because heavy metal particles are difficult to degrade in the environment, the heavy metal particles can be accumulated in human bodies, animals and plants, are gradually enriched through a food chain and finally enter the human body to cause harm, and are one of the largest pollution sources harming human beings. In recent years, particulate object monitoring is carried out in most areas in China, and it is found that at least 40% of the air quality indexes of the areas in China seriously exceed relevant standards. Some particulate objects have not detected relevant toxicity by surface experiments, but do not represent that it is healthy, since it may carry other toxic gases into the body.
There are many environmentally hazardous pollutants in coal combustion flue gases, with heavy metal emissions being a considerable threat. The method can be used for rapidly and continuously detecting the content of heavy metal elements in the flue gas, and has important significance for effectively controlling and governing the discharge of heavy metals and reducing the pollution of the heavy metals to the environment.
The heavy metal in the combustion flue gas has the characteristics of low content and low detection sensitivity, the general measurement means is complicated, the complexity and the high cost are difficult to achieve the standard measurement, and the flue gas is not filtered.
Disclosure of Invention
The invention aims to solve the defects that the general measurement means in the prior art are complicated, complex, high in cost and difficult to achieve standard measurement, and smoke is not filtered, and provides a smoke particulate matter component detection device based on double-pulse laser-induced breakdown spectroscopy.
In order to achieve the purpose, the invention adopts the following technical scheme:
a smoke and dust particle component detection device based on double-pulse laser induced breakdown spectroscopy comprises a machine body, a first fixed laser body, a second fixed laser body, a delayer, a first total reflection mirror, a second total reflection mirror, a spectrometer, an enhanced charge coupler, an optical fiber probe, a computer, an air inlet, a focusing mirror, an air filter membrane, a rotary platform and an air pump, wherein the air inlet is arranged at the top of the machine body, the focusing mirror, the air filter membrane and the rotary platform are all arranged in the machine body, the air filter membrane is connected with the rotary platform, the optical fiber probe is arranged in the machine body and matched with the air filter membrane, the optical fiber probe is connected with the enhanced charge coupler, the spectrometer and the computer are both connected with the enhanced charge coupler, the delayer is connected with the spectrometer, the first fixed laser body and the second fixed laser body are both connected with the delayer, the first total reflection mirror and the second total reflection mirror are both matched with the second fixed laser body, the first total-reflection mirror and the second total-reflection mirror are symmetrically arranged, the first fixed laser body and the second total-reflection mirror are matched with a focusing mirror in a machine body, an air pump is communicated with the machine body, a treatment box is communicated with an air outlet of the air pump, a disc box is fixedly arranged in the treatment box, an air inlet pipe and an air outlet pipe are communicated with the outer side of the disc box, the air inlet pipe is communicated with the air outlet of the air pump, a liquid box is arranged in the treatment box, the bottom end of the air outlet pipe extends into the liquid box, an air outlet pipe is communicated with the right side of the liquid box, a filter box is arranged in the treatment box, a filter unit is arranged in the filter box, a mounting plate is arranged at the top of the filter box, a sealing plug is fixedly arranged at the bottom of the mounting plate, the sealing plug is in friction connection with the inner wall of the filter box, the mounting plate is made of rubber, a handle is connected to the top of the mounting plate, a stress shaft is rotatably arranged in the disc box, and a plurality of fan blades are arranged at the outer side of the stress shaft, a plurality of fan blades are all located the disc box, are provided with the unit of strikeing in the processing case, strike the unit and link to each other with the atress axle, strike unit and filter cartridge looks adaptation.
Preferably, the filter unit comprises dry cotton, a first filter screen and a second filter screen, the dry cotton, the first filter screen and the second filter screen are all arranged in the filter box, a plurality of air inlets are formed in the left side of the filter box, and a plurality of air outlets are formed in the right side of the filter box.
Preferably, a plurality of mixing rods are fixedly mounted on the outer side of the stressed shaft, and are all located in the liquid tank.
Preferably, the unit of strikeing includes the rotary rod, first hypotenuse cylinder piece, second hypotenuse cylinder piece, square pole, the bracing piece, reset spring and rubber head, bracing piece fixed mounting is on the top inner wall of handling the case, square pole slidable mounting is in the outside of bracing piece, the rotary rod rotates the top of installing at the disc box, rotary rod and atress axle looks adaptation, first hypotenuse cylinder piece links to each other with the right-hand member of rotary rod, second hypotenuse cylinder piece links to each other with the left side of square pole, first hypotenuse cylinder piece is inconsistent with second hypotenuse cylinder piece, reset spring is located between second hypotenuse cylinder piece and the bracing piece and the cover establishes the outside of square pole.
Preferably, a first bevel gear is fixedly mounted at the left end of the rotating rod, a second bevel gear is fixedly mounted at the top end of the stress shaft, and the first bevel gear is meshed with the second bevel gear.
Preferably, the left side of the liquid tank is communicated with a liquid feeding pipe and a liquid discharging pipe, and the liquid feeding pipe and the liquid discharging pipe both extend to the outer side of the treatment tank.
Preferably, two recesses have been seted up to the bottom symmetry of mounting panel, have all seted up the constant head tank on the top inner wall of two recesses, and two locating levers are installed to the top symmetry of handling the case, locating lever and the constant head tank looks adaptation that corresponds.
Preferably, slidable mounting has the inserted bar on the locating lever, has seted up the dovetail groove on one side inner wall of recess, and the top and the bottom of inserted bar are the hypotenuse setting, inserted bar and dovetail groove looks adaptation.
Preferably, the outside cover of inserted bar is equipped with the extension spring, and the one end of extension spring links to each other with the inserted bar, and the other end of extension spring links to each other with the locating lever.
Preferably, the right side of handling the case is provided with the air outlet, and the mounting hole has been seted up at the top of handling the case, filter cartridge and mounting hole swing joint.
Compared with the prior art, the invention has the advantages that:
the solid pulse electro-optic Q-switched laser, the optical fiber spectrometer and the smoke particulate matter collecting device are arranged in the scheme, and the converging lens and the spectral detector are embedded in the smoke particulate matter collecting device. The air filter membrane is inserted into the smoke particulate matter collecting device and is replaceable.
The smoke particulate component detection device based on the laser-induced breakdown spectroscopy can quickly detect the components of particulate matters in smoke, and has the advantages of continuous monitoring and no need of pretreatment on samples. In order to meet the requirement of detecting smoke particulate matters at different times, the air filter membrane can be replaced according to specific requirements;
the liquid is adopted to firstly adsorb dust particles in the flue gas and then is filtered, so that the filtering effect can be improved, air pollution is avoided, and meanwhile, the liquid can be mixed, so that the dust adsorption effect is improved;
the knocking unit arranged in the scheme can intermittently knock the filter box, so that the filter box generates slight vibration, and the blocking risk of the first filter screen and the second filter screen is reduced;
this scheme only need upwards stimulate the handle, can pull out the filter cartridge from handling the incasement, then is used for pulling out the sealing plug, can change or clean convenient to use to dry cotton, first filter screen and second filter screen.
The smoke particulate component detection device based on the laser-induced breakdown spectroscopy can quickly detect the components of particulate matters in smoke, has the advantages of continuous monitoring and no need of pretreatment on samples, and can replace an air filter membrane and filter smoke according to specific requirements in order to meet the requirement of detecting the smoke particulate matters at different times.
Drawings
FIG. 1 is a structural diagram of the working principle of a smoke particulate matter component detection device based on double-pulse laser-induced breakdown spectroscopy, which is provided by the invention;
FIG. 2 is a schematic perspective view of a treatment tank according to the present invention;
FIG. 3 is a schematic cross-sectional view of a treatment tank according to the present invention;
FIG. 4 is a schematic view of the structure of part A in FIG. 3 according to the present invention;
fig. 5 is a schematic structural diagram of a portion B in fig. 3 according to the present invention.
In the figure: 1. a body; 2. a first fixed laser body; 3. a second fixed laser body; 4. a delay device; 5. a first total reflection mirror; 6. a second total reflection mirror; 7. a spectrometer; 8. an enhancement charge coupler; 9. a fiber optic probe; 10. a computer; 11. an air inlet; 12. a focusing mirror; 13. an air filtration membrane; 14. a rotating table; 15. an air pump; 16. a treatment tank; 17. an air outlet; 18. a liquid feeding pipe; 19. a liquid discharge pipe; 20. mounting a plate; 21. a handle; 22. an air inlet pipe; 23. a disc box; 24. a fan blade; 25. a force-bearing shaft; 26. a mixing rod; 27. a liquid tank; 28. an air outlet pipe; 29. an exhaust pipe; 30. a filter cartridge; 31. an air inlet; 32. an air outlet; 33. drying the cotton; 34. a first filter screen; 35. a second filter screen; 36. rotating the rod; 37. a first bevel gear; 38. a second bevel gear; 39. a first beveled cylindrical block; 40. a second beveled cylindrical block; 41. a square rod; 42. a support bar; 43. a return spring; 44. a rubber head; 45. a groove; 46. positioning a groove; 47. positioning a rod; 48. a tension spring; 49. inserting a rod; 50. a trapezoidal groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a smoke particulate component detection device based on double-pulse laser induced breakdown spectroscopy comprises a machine body 1, a first fixed laser body 2, a second fixed laser body 3, a retarder 4, a first total reflection mirror 5, a second total reflection mirror 6, a spectrometer 7, an enhanced charge coupler 8, an optical fiber probe 9, a computer 10, an air inlet 11, a focusing mirror 12, an air filter membrane 13, a rotary table 14 and an air pump 15, wherein the air inlet 11 is arranged at the top of the machine body 1, the focusing mirror 12, the air filter membrane 13 and the rotary table 14 are all arranged in the machine body 1, the air filter membrane 13 is connected with the rotary table 14, the optical fiber probe 9 is arranged in the machine body 1 and is matched with the air filter membrane 13, the optical fiber probe 9 is connected with the enhanced charge coupler 8, the spectrometer 7 and the computer 10 are both connected with the enhanced charge coupler 8, the retarder 4 is connected with the spectrometer 7, the first fixed laser body 2, The second fixed laser body 3 is connected with the delayer 4, the first full-reflecting mirror 5 and the second full-reflecting mirror 6 are matched with the second fixed laser body 3, the first full-reflecting mirror 5 and the second full-reflecting mirror 6 are symmetrically arranged, the first fixed laser body 2 and the second full-reflecting mirror 6 are matched with the focusing mirror 12 in the machine body 1, the air pump 15 is communicated with the machine body 1, the air outlet of the air pump 15 is communicated with the processing box 16, the processing box 16 is internally and fixedly provided with a disk box 23, the outer side of the disk box 23 is communicated with an air inlet pipe 22 and an air outlet pipe 28, the air inlet pipe 22 is communicated with the air outlet of the air pump 15, the processing box 16 is internally provided with a liquid box 27, the bottom end of the air outlet pipe 28 extends into the liquid box 27, the right side of the liquid box 27 is communicated with an air outlet pipe 29, the processing box 16 is internally provided with a filter box 30, the filter unit is arranged in the filter box 30, the top of the filter box 30 is provided with a mounting plate 20, the bottom fixed mounting of mounting panel 20 has the sealing plug, the sealing plug meets with the inner wall friction of filter cartridge 30, the sealing plug is the rubber material, the top of mounting panel 20 is connected with handle 21, atress axle 25 is installed to the 23 internal rotations of disc box, the outside of atress axle 25 is provided with a plurality of fan leaves 24, a plurality of fan leaves 24 all are located disc box 23, be provided with in the processing case 16 and strike the unit, strike the unit and link to each other with atress axle 25, strike unit and filter cartridge 30 looks adaptation.
In this embodiment, when the device is used, the air pump 15 pumps the smoke dust in the boiler in the incineration state to make the smoke dust enter the smoke particulate collection device, and after the smoke gas penetrates through the air filter membrane 13, the solid particulate matters in the smoke gas are adsorbed by the air filter membrane 13. The double-pulse solid pulse Q-switched laser arranged outside the smoke particulate matter collecting device sequentially emits two beams of laser, the two beams of laser are converged by the focusing mirror 12 and then focused on the surface of the air filter membrane 13 (the first fixed laser body 2 and the second fixed laser body 3 sequentially emit a first beam of laser and a second beam of laser, the first beam of laser directly irradiates the focusing mirror 12, the second beam of laser is reflected to the focusing mirror 12 through the first full-reflecting mirror 5 and the second full-reflecting mirror 6, and then the first beam of laser and the second beam of laser are converged and focused on the surface of the air filter membrane 13). The flue gas particulate matter on the surface of the air filter membrane 13 is excited by laser to form plasma, the plasma spectrum enters the spectrometer 7 after passing through the spectrum acquisition device, and plasma spectrum information containing the flue gas particulate matter is obtained, so that the particulate matter components of the flue gas particulate matter are rapidly determined.
In this embodiment, the first fixed laser body 2 is a first solid-state pulsed electro-optic Q-switched laser as an excitation source, the fundamental wavelength is 1064nm, the pulse width (FWHM) is 9-11ns, and the peak power density is 81.5MW/cm 2. The second fixed laser body 3 is a second laser which outputs 532nm laser after passing through a nonlinear crystal, outputs 355nm laser after second harmonic, and has the pulse width (FWHM) of 8-10 ns. Both lasers are operated in a pulsed mode with a maximum repetition rate of 10 Hz. The spectrum collection process is completed by a fiber spectrometer and an enhanced charge coupler. The entrance slit of the fiber spectrometer is 60 μm, the spectral resolution is 0.02nm, and the range of the spectrometer 7 is 200-900 nm. The enhanced charge coupler gate width is set to 5 mus and the delay time between the two lasers is set by the delay 4. The delay device 4 is used to control the delay time between the two lasers and between the lasers and the spectrometer 7. The soot particulates are collected by the sampler at different durations. The thickness of the filter paper is 0.2mm, and the filter paper sample is placed on a fixed platform connected with a rotary stepping motor, so that different points on the surface of the sample can be excited by laser pulses.
In this embodiment, the first fixed laser body 2 firstly emits laser light, which passes through the focusing lens 12 to excite particles attached to the air filter membrane 13 to form plasma, and the second fixed laser body 3 passes through the first total reflection mirror 5 and the second total reflection mirror 6 and then excites the generated plasma through the focusing lens 12. The spectrum acquisition device acquires plasma spectrum information through the spectrometer 7, so that the particle composition is determined.
In this embodiment, particulate matter collecting device detects in order to satisfy the particulate matter of flue gas under to the different times, can change on time air filter 13 according to specific demand.
In this embodiment, the Fe element is used as an internal standard element, and the quantitative analysis is performed on the element to be detected by using the ratio of the sum of the intensities of all emission spectral lines of the heavy metal element to be detected to the Fe element intensity. For example, the content of Ti element is quantitatively analyzed by using the intensity of Ti I334.1nm + Ti 335.8nm + Ti II327.2nm and the ratio of Fe I329.8nm +328.1nm, and other elements are analyzed by the same elements as the Ti element.
In the embodiment, the Laser Induced Breakdown (LIBS) boiler flue gas particulate matter component is used for real-time, online and continuous detection, and plasma generated by the LIBS has the characteristics of high temperature and high density, so that the difficulties can be effectively solved, and the method has the advantages of no need of sample preparation, simplicity, rapidness and the like and becomes the best choice for detecting heavy metal in the coal-fired flue gas.
In this embodiment, the filter unit includes dry cotton 33, first filter screen 34 and second filter screen 35, and dry cotton 33, first filter screen 34 and second filter screen 35 all set up in filter cartridge 30, and a plurality of inlet ports 31 have been seted up to filter cartridge 30's left side, and a plurality of ventholes 32 have been seted up to filter cartridge 30's right side.
In this embodiment, a plurality of mixing rods 26 are fixedly mounted on the outer side of the force-receiving shaft 25, and the plurality of mixing rods 26 are all located in the liquid tank 27.
In this embodiment, the knocking unit includes a rotating rod 36, a first bevel edge cylindrical block 39, a second bevel edge cylindrical block 40, a square rod 41, a supporting rod 42, a return spring 43 and a rubber head 44, the supporting rod 42 is fixedly installed on the inner wall of the top of the processing box 16, the square rod 41 is slidably installed on the outer side of the supporting rod 42, the rotating rod 36 is rotatably installed at the top of the disc box 23, the rotating rod 36 is matched with the stressed shaft 25, the first bevel edge cylindrical block 39 is connected with the right end of the rotating rod 36, the second bevel edge cylindrical block 40 is connected with the left side of the square rod 41, the first bevel edge cylindrical block 39 is inconsistent with the second bevel edge cylindrical block 40, the return spring 43 is located between the second bevel edge cylindrical block 40 and the supporting rod 42, and is arranged on the outer side of the square rod 41.
In this embodiment, a first bevel gear 37 is fixedly mounted at the left end of the rotating rod 36, a second bevel gear 38 is fixedly mounted at the top end of the force-receiving shaft 25, and the first bevel gear 37 is engaged with the second bevel gear 38.
In this embodiment, the liquid tank 27 has a liquid feed pipe 18 and a liquid discharge pipe 19 communicating with each other on the left side, and both the liquid feed pipe 18 and the liquid discharge pipe 19 extend to the outside of the treatment tank 16.
In this embodiment, two recesses 45 have been seted up to the bottom symmetry of mounting panel 20, have all seted up constant head tank 46 on the top inner wall of two recesses 45, and two locating levers 47 are installed to the top symmetry of handling case 16, and locating lever 47 and the constant head tank 46 looks adaptation that corresponds.
In this embodiment, slidable mounting has inserted bar 49 on locating lever 47, has seted up dovetail groove 50 on one side inner wall of recess 45, and the top and the bottom of inserted bar 49 are the hypotenuse setting, inserted bar 49 and dovetail groove 50 looks adaptation.
In this embodiment, the outer side of the insertion rod 49 is sleeved with a tension spring 48, one end of the tension spring 48 is connected with the insertion rod 49, and the other end of the tension spring 48 is connected with the positioning rod 47.
In this embodiment, the right side of the treatment box 16 is provided with the air outlet 17, the top of the treatment box 16 is provided with a mounting hole, and the filter box 30 is movably connected with the mounting hole.
In this embodiment, the air absorbed by the air pump 15 is discharged into the air inlet pipe 22 through the air outlet, the air flow blows the plurality of fan blades 24 in the disc box 23 to rotate, the fan blades 24 drive the force bearing shaft 25 to rotate, the force bearing shaft 25 drives the plurality of mixing rods 26 to rotate, the plurality of mixing rods 26 stir the liquid in the liquid tank 27, meanwhile, the air in the disc box 23 enters the liquid tank 27 through the air outlet pipe 28 to melt with the liquid, so as to filter dust particles, the stirring liquid can improve the absorption of the liquid and the dust particles, the filtered air is discharged through the air outlet pipe 29, the air enters the filter box 30 through the plurality of air inlet holes 31, the dry cotton 33 arranged in the filter box 30 can dry and filter the air, and then the filtered air is discharged through the first filter screen 34 and the second filter screen 35, so as to avoid environmental pollution, meanwhile, the force bearing shaft 25 drives the rotating rod 36 to rotate through the second bevel gear 38 and the first bevel gear 37, the rotating rod 36 drives the first bevel edge cylinder 39 to rotate, the first bevel edge cylinder 39 rotates and extrudes the second bevel edge cylinder 40 to move through a bevel edge, the second bevel edge cylinder 40 drives the square rod 41 to horizontally slide on the supporting rod 42, meanwhile, under the elastic action of the return spring 43, the square rod 41 horizontally and reciprocally slides on the supporting rod 42, the square rod 41 drives the rubber head 44 to reciprocally move and intermittently knock the filter box 30, so that the filter box 30 generates slight vibration, the blocking risk of the first filter screen 34 and the second filter screen 35 is reduced, when the dry cotton 33 and the first filter screen 34 and the second filter screen 35 need to be replaced or cleaned, the handle 21 is pulled upwards, the handle 21 drives the mounting plate 20 to upwards move, the mounting plate 20 extrudes the corresponding inserting rod 49 through the trapezoid-shaped groove 50, the inserting rod 49 stretches the tension spring 48 to deform and leave the trapezoid-shaped groove 50, and the mounting plate 20 passes through the friction force between the sealing plug and the filter box 30, the filter cassette 30 can be pulled out of the treatment housing 16 and then used to pull out the sealing plug, and the dry cotton 33, the first filter 34 and the second filter 35 can be replaced or cleaned and reinstalled for reuse.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A smoke particulate component detection device based on double-pulse laser induced breakdown spectroscopy comprises a machine body (1), a first fixed laser body (2), a second fixed laser body (3), a delayer (4), a first total reflection mirror (5), a second total reflection mirror (6), a spectrometer (7), an enhanced charge coupler (8), an optical fiber probe (9), a computer (10), an air inlet (11), a focusing mirror (12), an air filter membrane (13), a rotary table (14) and an air pump (15), and is characterized in that the air inlet (11) is arranged at the top of the machine body (1), the focusing mirror (12), the air filter membrane (13) and the rotary table (14) are arranged in the machine body (1), the air filter membrane (13) is connected with the rotary table (14), the optical fiber probe (9) is arranged in the machine body (1) and is matched with the air filter membrane (13), and the optical fiber probe (9) is connected with the enhanced charge coupler (8), the spectrometer (7) and the computer (10) are both connected with the enhanced charge coupler (8), the delayer (4) is connected with the spectrometer (7), the first fixed laser body (2) and the second fixed laser body (3) are both connected with the delayer (4), the first full-reflecting mirror (5) and the second full-reflecting mirror (6) are both matched with the second fixed laser body (3), the first full-reflecting mirror (5) and the second full-reflecting mirror (6) are symmetrically arranged, the first fixed laser body (2) and the second full-reflecting mirror (6) are both matched with the focusing mirror (12) in the machine body (1), the air pump (15) is communicated with the machine body (1), the air outlet of the air pump (15) is communicated with the processing box (16), the disk box (23) is fixedly arranged in the processing box (16), the outer side of the disk box (23) is communicated with the air inlet pipe (22) and the air outlet pipe (28), the air inlet pipe (22) is communicated with the air outlet of the air pump (15), a liquid tank (27) is arranged in the treatment tank (16), the bottom end of the air outlet pipe (28) extends into the liquid tank (27), the right side of the liquid tank (27) is communicated with an exhaust pipe (29), a filter box (30) is arranged in the treatment tank (16), a filter unit is arranged in the filter box (30), a mounting plate (20) is arranged at the top of the filter box (30), a sealing plug is fixedly arranged at the bottom of the mounting plate (20), the sealing plug is in friction connection with the inner wall of the filter box (30), the sealing plug is made of rubber, the top of the mounting plate (20) is connected with a handle (21), a stress shaft (25) is rotatably arranged in the disc box (23), a plurality of fan blades (24) are arranged on the outer side of the stress shaft (25), the plurality of fan blades (24) are all positioned in the disc box (23), a knocking unit is arranged in the treatment tank (16), and is connected with the stress shaft (25), the knocking unit is matched with the filter box (30).
2. The smoke particulate component detection device based on the double-pulse laser-induced breakdown spectroscopy of claim 1, wherein the filter unit comprises dry cotton (33), a first filter screen (34) and a second filter screen (35), the dry cotton (33), the first filter screen (34) and the second filter screen (35) are all arranged in the filter box (30), the left side of the filter box (30) is provided with a plurality of air inlets (31), and the right side of the filter box (30) is provided with a plurality of air outlets (32).
3. The dual-pulse laser-induced breakdown spectroscopy-based smoke particulate component detection device according to claim 1, wherein a plurality of mixing rods (26) are fixedly mounted on the outer side of the stress shaft (25), and the mixing rods (26) are located in the liquid tank (27).
4. The smoke and dust particle component detecting device based on double-pulse laser-induced breakdown spectroscopy as claimed in claim 1, wherein the knocking unit comprises a rotating rod (36), a first bevel cylindrical block (39), a second bevel cylindrical block (40), a square rod (41), a supporting rod (42), a return spring (43) and a rubber head (44), the supporting rod (42) is fixedly installed on the inner wall of the top of the processing box (16), the square rod (41) is slidably installed on the outer side of the supporting rod (42), the rotating rod (36) is rotatably installed on the top of the disc box (23), the rotating rod (36) is adapted to the stress shaft (25), the first bevel cylindrical block (39) is connected with the right end of the rotating rod (36), the second bevel cylindrical block (40) is connected with the left side of the square rod (41), and the first bevel cylindrical block (39) is abutted to the second bevel cylindrical block (40), the return spring (43) is positioned between the second bevel edge cylindrical block (40) and the support rod (42) and sleeved on the outer side of the square rod (41).
5. The double-pulse laser-induced breakdown spectroscopy-based smoke particulate component detection device according to claim 4, wherein a first bevel gear (37) is fixedly mounted at the left end of the rotating rod (36), a second bevel gear (38) is fixedly mounted at the top end of the stress shaft (25), and the first bevel gear (37) is meshed with the second bevel gear (38).
6. The double-pulse laser-induced breakdown spectroscopy-based smoke particulate matter component detection device according to claim 1, wherein a liquid feeding pipe (18) and a liquid discharging pipe (19) are communicated with the left side of the liquid tank (27), and both the liquid feeding pipe (18) and the liquid discharging pipe (19) extend to the outer side of the treatment tank (16).
7. The double-pulse laser-induced breakdown spectroscopy-based smoke particulate matter component detection device according to claim 1, wherein two grooves (45) are symmetrically formed in the bottom of the mounting plate (20), positioning grooves (46) are formed in inner walls of the tops of the two grooves (45), two positioning rods (47) are symmetrically mounted at the top of the treatment box (16), and the positioning rods (47) are matched with the corresponding positioning grooves (46).
8. The double-pulse laser-induced breakdown spectroscopy-based smoke particulate component detection device according to claim 7, wherein an insertion rod (49) is slidably mounted on the positioning rod (47), a trapezoidal groove (50) is formed in the inner wall of one side of the groove (45), the top and the bottom of the insertion rod (49) are arranged in a bevel edge mode, and the insertion rod (49) is matched with the trapezoidal groove (50).
9. The smoke particulate matter component detection device based on double-pulse laser-induced breakdown spectroscopy as claimed in claim 8, wherein a tension spring (48) is sleeved outside the inserted link (49), one end of the tension spring (48) is connected with the inserted link (49), and the other end of the tension spring (48) is connected with the positioning rod (47).
10. The double-pulse laser-induced breakdown spectroscopy-based smoke particulate component detection device according to claim 1, wherein an air outlet (17) is formed in the right side of the processing box (16), a mounting hole is formed in the top of the processing box (16), and the filter box (30) is movably connected with the mounting hole.
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