CN115266507A - Air particulate matter monitoring devices - Google Patents
Air particulate matter monitoring devices Download PDFInfo
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- CN115266507A CN115266507A CN202211013167.2A CN202211013167A CN115266507A CN 115266507 A CN115266507 A CN 115266507A CN 202211013167 A CN202211013167 A CN 202211013167A CN 115266507 A CN115266507 A CN 115266507A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 12
- 239000013618 particulate matter Substances 0.000 title claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 156
- 239000002245 particle Substances 0.000 claims abstract description 59
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000005250 beta ray Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic 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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- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
The invention discloses an air particulate matter monitoring device, which relates to the technical field of air particulate matter monitoring, and comprises a monitoring box and also comprises: the ultrasonic monitoring box is fixedly connected in the monitoring box, and is provided with an ultrasonic generator and an ultrasonic sensor corresponding to the ultrasonic generator; according to the invention, the piston cylinder sucks air from the outside and distributes the air in the ultrasonic monitoring box, the laser monitoring box and the particle collecting box, so that the concentration of PM10 in the sucked air is monitored by the matching of the ultrasonic generator and the ultrasonic sensor in the ultrasonic monitoring box, the concentration of PM2.5 in the sucked air is monitored by the matching of the laser transmitter and the photoelectric sensor in the laser monitoring box, and the average concentration of PM2.5 in the monitored air is monitored by the matching of the filter box, the filter membrane and the pressure sensor in the particle collecting box, so that the purpose of monitoring particulate matters in the air is achieved.
Description
Technical Field
The invention belongs to the technical field of air particulate matter monitoring, and particularly relates to an air particulate matter monitoring device.
Background
Along with industrial pollution's aggravation, haze weather frequently appears, and air pollution has seriously influenced human healthy, and the detection of air quality becomes especially important, detects, analysis and research the particulate matter in the air to the key point of current environmental protection work, according to the aerodynamic diameter size, atmospheric particulates can divide into: (1) Total suspended particulate matter (TSP) with the diameter less than or equal to 100 microns; (2) Inhalable particles with the diameter less than or equal to 10 microns, PM10 for short; (3) Compared with the thicker atmospheric particulate matters, the PM2.5 has small particle size, large area, strong activity, easy attachment of toxic and harmful substances, long retention time in the atmosphere and long moving distance, so the influence on the human health and the quality of the atmospheric environment is relatively larger.
The current conventional methods of testing PM2.5 and PM10 concentrations are roughly three: (1) a manual weighing method; (2) the oscillating balance method; and (3) beta ray measurement. These three methods all have their drawbacks: the first manual weighing method cannot perform continuous automatic detection, and the acquisition time is at least more than 30 minutes; although the second oscillating balance method has high measurement accuracy and can obtain measurement data in real time, the method is seriously influenced by air humidity, and the method has high requirements on mechanical design, so that the price is low and the later maintenance is difficult; the third method can continuously sample, but the acquisition time is at least more than 30 minutes, which requires consumables and a large amount of maintenance cost, and the beta ray source is arranged inside, which causes immeasurable damage to human body.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem underlying the present invention is to overcome the disadvantages of the prior art and to provide an air particulate monitoring device which overcomes or at least partly solves the above mentioned problems.
In order to solve the technical problems, the invention adopts the technical scheme that: an air particulate matter monitoring device, includes monitoring box, still includes: the ultrasonic monitoring box is fixedly connected in the monitoring box, the ultrasonic monitoring box is provided with an ultrasonic generator and an ultrasonic sensor corresponding to the ultrasonic generator, a filter screen for filtering partial particles is arranged in the ultrasonic monitoring box, and the filter screen divides the ultrasonic monitoring box into a filter cavity and a monitoring cavity; the air inlet channel is fixedly connected to the monitoring box and communicated with the monitoring cavity; the laser monitoring box is fixedly connected to the ultrasonic monitoring box, a laser emitter and a photoelectric sensor corresponding to the laser emitter are installed in the laser monitoring box, and the laser monitoring box is communicated with the filter cavity through a gas conveying pipe; the particle collecting box is fixedly connected to the laser monitoring box, a pressure sensor is mounted in the particle collecting box, a filter box is placed on the pressure sensor, an air guide pipe is communicated with one end, away from the gas pipe, of the laser monitoring box, one end, away from the laser monitoring box, of the air guide pipe is communicated with the particle collecting box, and an opening correspondingly communicated with the air guide pipe is formed in the filter box; the piston cylinder is fixedly connected in the monitoring box, the piston cylinder is communicated with an air suction pipe and an air exhaust pipe, one end, far away from the piston cylinder, of the air suction pipe is communicated with the particle collecting box, and one end, far away from the piston cylinder, of the air exhaust pipe is communicated with the laser monitoring box.
In order to facilitate the piston head to be driven to perform piston movement in the piston cylinder, preferably, an electric telescopic rod is fixedly connected in the monitoring box, a piston head is fixedly connected to the telescopic end of the electric telescopic rod, and the piston head is slidably connected in the piston cylinder.
Furthermore, first check valves are installed on the exhaust pipe and the air suction pipe.
In order to facilitate the maintenance in the monitoring box and the taking and placing of the filter box, preferably, the monitoring box is rotatably connected with a big box door, a big handle is fixedly connected with the big box door, a small box door is rotatably connected with the big box door, a small handle is fixedly connected with the small box door, a placing opening is formed in the particle collecting box, and the small box door corresponds to the placing opening.
In order to facilitate vibration of the filter screen, preferably, a sliding groove is formed in the ultrasonic monitoring box, a guide rod is fixedly connected with the inside of the sliding groove, a filter frame is connected to the guide rod in a sliding mode, the filter screen is fixedly connected to the filter frame, a first driving box is communicated to the gas pipe, a first rotating shaft is connected to the ultrasonic monitoring box in a rotating mode, a first cam is fixedly connected to one end of the first rotating shaft, the edge of the first cam is attached to the surface of the filter screen, the other end of the first rotating shaft extends to a first impeller fixedly connected to the inside of the first driving box, the first impeller is matched with the gas pipe, a spring is sleeved on the guide rod, one end of the spring is fixedly connected with the inner wall of the sliding groove, and the other end of the spring is fixedly connected with the filter frame.
In order to facilitate the back flushing discharge of particles at the bottom of the ultrasonic monitoring box, a back flushing cavity is formed in the ultrasonic monitoring box, a plurality of air injection holes are communicated with the back flushing cavity, are located at the bottom of the ultrasonic monitoring box and incline towards the air inlet channel, and are communicated with the filter cavity through communicating pipes.
In order to facilitate filtering processing of the laser light and the astigmatic light, preferably, a first lens and a second lens are fixedly connected in the laser monitoring box, the first lens corresponds to the laser emitter, and the second lens corresponds to the photoelectric sensor.
In order to filter particles passing through the filter box conveniently, preferably, a filter opening is formed in the filter box, a limiting clamping groove is formed in the filter opening, a frame is connected in the limiting clamping groove in a sliding mode, and a filter membrane is fixedly connected to the frame and is in an inclined shape.
In order to facilitate the vibration of the filter membrane, the exhaust pipe is communicated with a second driving box, the particle collecting box is connected with a second rotating shaft in a rotating mode, one end of the second rotating shaft is fixedly connected with a second cam, the second cam is attached to the filter membrane, the other end of the second rotating shaft extends to a second impeller fixedly connected with the second driving box, and the second impeller is matched with the exhaust pipe.
In order to facilitate the operation of supplying power to equipment and control equipment, preferably, still include battery and controller, battery and the equal fixed connection of controller are you at monitoring roof portion, monitoring roof portion passes through bracing piece fixedly connected with solar cell panel, battery and controller, solar cell panel, electric telescopic handle electric connection. .
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: according to the invention, the piston cylinder sucks air from the outside and distributes the air in the ultrasonic monitoring box, the laser monitoring box and the particle collecting box, so that the concentration of PM10 in the sucked air is monitored by the matching of the ultrasonic generator and the ultrasonic sensor in the ultrasonic monitoring box, the concentration of PM2.5 in the sucked air is monitored by the matching of the laser transmitter and the photoelectric sensor in the laser monitoring box, and the average concentration of PM2.5 in the monitored air is monitored by the matching of the filter box, the filter membrane and the pressure sensor in the particle collecting box, so that the purpose of monitoring particulate matters in the air is achieved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a first front view of an airborne particulate monitoring apparatus according to the present invention;
FIG. 2 is a second front view of an airborne particle monitoring apparatus according to the present invention;
FIG. 3 is a schematic structural diagram of a portion A in FIG. 2 of an air particulate monitoring apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of a portion B of FIG. 2 of an air particulate monitoring apparatus according to the present invention;
FIG. 5 is a schematic structural view of a laser monitoring box and a particle collecting box of the air particle monitoring device according to the present invention;
FIG. 6 is a left side view of an ultrasonic monitoring box of an air particulate monitoring device according to the present invention;
FIG. 7 is a schematic structural diagram of a second driving box of an air particle monitoring device according to the present invention;
fig. 8 is a schematic structural diagram of a first driving box of an air particulate monitoring device according to the present invention.
In the figure: 1. a monitoring box; 11. a big box door; 12. a large handle; 13. a small box door; 14. a small handle; 15. an air intake passage; 2. an electric telescopic rod; 3. a piston cylinder; 31. a piston head; 32. an exhaust pipe; 33. an air intake duct; 34. a second driving cartridge; 4. an ultrasonic monitoring box; 41. an ultrasonic generator; 411. an ultrasonic sensor; 42. a gas delivery pipe; 421. a first drive cassette; 422. a first rotating shaft; 423. a first cam; 424. a first impeller; 43. a recoil chamber; 44. a gas injection hole; 45. a communicating pipe; 46. a sliding groove; 47. a guide bar; 471. a spring; 48. a filter frame; 49. a filter screen; 5. a laser monitoring box; 51. an air duct; 52. a laser transmitter; 53. a first lens; 54. a second lens; 55. a photoelectric sensor; 6. a particle collection box; 61. a pressure sensor; 7. a solar panel; 71. a support bar; 72. a storage battery; 73. a controller; 8. a filter cartridge; 81. an opening; 82. a second rotating shaft; 83. a second cam; 84. a second impeller; 9. filtering the membrane; 91. and (5) a frame.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
Example (b):
referring to fig. 1-8, an airborne particle monitoring device includes a monitoring box 1, and further includes: the ultrasonic monitoring box 4 is fixedly connected in the monitoring box 1, the ultrasonic monitoring box 4 is provided with an ultrasonic generator 41 and an ultrasonic sensor 411 corresponding to the ultrasonic generator 41, a filter screen 49 for filtering partial particles is arranged in the ultrasonic monitoring box 4, and the filter screen 49 divides the ultrasonic monitoring box 4 into a filter cavity and a monitoring cavity; the air inlet channel 15 is fixedly connected to the monitoring box 1, and the air inlet channel 15 is communicated with the monitoring cavity; the laser monitoring box 5 is fixedly connected to the ultrasonic monitoring box 4, a laser emitter 52 and a photoelectric sensor 55 corresponding to the laser emitter 52 are installed in the laser monitoring box 5, and the laser monitoring box 5 is communicated with the filter cavity through a gas conveying pipe 42; the particle collecting box 6 is fixedly connected to the laser monitoring box 5, a pressure sensor 61 is installed in the particle collecting box 6, a filter box 8 is placed on the pressure sensor 61, an air guide pipe 51 is communicated with one end, away from the air conveying pipe 42, of the laser monitoring box 5, one end, away from the laser monitoring box 5, of the air guide pipe 51 is communicated with the particle collecting box 6, and an opening 81 correspondingly communicated with the air guide pipe 51 is formed in the filter box 8; the piston cylinder 3 is fixedly connected in the monitoring box 1, the piston cylinder 3 is communicated with an air suction pipe 33 and an air exhaust pipe 32, one end of the air suction pipe 33, far away from the piston cylinder 3, is communicated with the particle collecting box 6, and one end of the air exhaust pipe 32, far away from the piston cylinder 3, is communicated with the laser monitoring box 5.
Fixedly connected with electric telescopic handle 2 in monitoring case 1, fixedly connected with piston head 31 on the flexible end of electric telescopic handle 2, piston head 31 sliding connection all installs first check valve on blast pipe 32 and the breathing pipe 33 in the piston cylinder 3.
The monitoring box 1 is rotatably connected with a big box door 11, a big handle 12 fixedly connected with the big box door 11 is rotatably connected with a small box door 13, a small handle 14 fixedly connected with the small box door 13 is arranged on the small box door 13, a placing opening is formed in the particle collecting box 6, and the small box door 13 corresponds to the placing opening.
A sliding groove 46 is formed in the ultrasonic monitoring box 4, a guide rod 47 is fixedly connected in the sliding groove 46, a filter frame 48 is slidably connected on the guide rod 47, a filter screen 49 is fixedly connected on the filter frame 48, a first driving box 421 is communicated on the air pipe 42, a first rotating shaft 422 is rotatably connected on the ultrasonic monitoring box 4, a first cam 423 is fixedly connected at one end of the first rotating shaft 422, the edge of the first cam 423 is attached to the surface of the filter screen 49, the other end of the first rotating shaft 422 extends into a first impeller 424 fixedly connected in the first driving box 421, the first impeller 424 is matched with the air pipe 42, a spring 471 is sleeved on the guide rod 47, one end of the spring 471 is fixedly connected with the inner wall of the sliding groove 46, the other end of the spring 471 is fixedly connected with the filter frame 48, a recoil cavity 43 is formed in the ultrasonic monitoring box 4, a plurality of air injection holes 44 are communicated on the recoil cavity 43, the air injection holes 44 are located at the bottom of the ultrasonic monitoring box 4 and incline towards the air inlet channel 15, and the recoil cavity 43 is communicated with the filter cavity through a communicating pipe 45.
A first lens 53 and a second lens 54 are fixedly connected in the laser monitoring box 5, the first lens 53 corresponds to the laser emitter 52, and the second lens 54 corresponds to the photoelectric sensor 55.
The filter opening has been seted up on filter box 8, spacing draw-in groove has been seted up in the filter opening, sliding connection has frame 91 in the spacing draw-in groove, fixedly connected with filter membrane 9 on the frame 91, filter membrane 9 is the slope form, the intercommunication has second drive box 34 on the blast pipe 32, it is connected with second pivot 82 to rotate on the granule collection box 6, second pivot 82 one end fixedly connected with second cam 83, second cam 83 laminates mutually with filter membrane 9, the second pivot 82 other end extends to fixedly connected with second impeller 84 in the second drive box 34, second impeller 84 cooperatees with blast pipe 32.
Still include battery 72 and controller 73, battery 72 and the equal fixed connection of controller 73 you are at monitoring case 1 top, and bracing piece 71 fixedly connected with solar cell panel 7 is passed through at monitoring case 1 top, battery 72 and controller 73, solar cell panel 7, 2 electric connection of electric telescopic handle.
In the using process of the invention, the controller 73 controls the electric telescopic rod 2 to make telescopic motion at a certain frequency, wherein the controller 73 can send driving signals to the electric telescopic rod 2, the ultrasonic generator 41 and the laser emitter 52 to control the work of the electric telescopic rod 2, the ultrasonic generator 41 and the laser emitter 52, receive signals detected by the ultrasonic sensor 411, the photoelectric sensor 55 and the pressure sensor 61, then calculate and analyze the signals into information of the concentration content of particulate matters in the air to be stored, and can transmit related information to an external display device, when the telescopic end of the electric telescopic rod 2 contracts, the piston head 31 can be driven to slide downwards in the piston cylinder 3, so that the air is sucked through the air suction pipe 33, the air quantity sucked in a single time is equal to the air capacity in the ultrasonic monitoring box 4, the laser monitoring box 5 and the particle collecting box 6, and therefore, in the air suction pipe 33 is sucking the air, the outside air enters the ultrasonic monitoring box 4 through the air inlet channel 15, passes through the filter screen 49 and enters the laser monitoring box 5 through the air pipe 42, in the process that the air passes through the filter screen 49, the filter screen 49 can filter particles with the diameter larger than 2.5 microns in the air and reserve the particles in the monitoring cavity in the ultrasonic monitoring box 4, the air entering the laser monitoring box 5 can continue to enter the particle collecting box 6 through the air guide pipe 51 and enter the filter box 8 to be filtered and then enter the piston cylinder 3, after the piston cylinder 3 extracts air once, the controller 73 controls the ultrasonic generator 41 and the laser emitter 52 to work, the ultrasonic generator 41 sends ultrasonic waves to pass through the air reserved in the ultrasonic monitoring box 4 until the ultrasonic sensor 411 corresponding to the ultrasonic waves passes through, wherein the ultrasonic waves can generate certain attenuation due to the particles suspended in the air in the process of air transmission, therefore, the ultrasonic sensor 411 transmits the received ultrasonic signal to the controller 73, the amount of PM10 in the air in the ultrasonic monitoring box 4 at this time can be monitored through calculation and analysis of the controller 73, the volume of the air corresponding to this amount is the air volume which is inhaled by the piston cylinder 3 once, the controller 73 can calculate the concentration of PM10 in the inhaled air, the synchronous laser emitter 52 works to emit laser, the laser passes through the first lens 53 and is retained in the air in the laser monitoring box 5 and then irradiates on the second lens 54, wherein the laser generates scattered light due to particles in the process of passing through the particles floating in the air in the laser monitoring box 5, the scattered light and the original laser both pass through the second lens 54 to the photoelectric sensor 55 and are received and converted into signals by the photoelectric sensor 55 and transmitted to the controller 73, the concentration of P2.5 in the air in the laser monitoring box 5 at this time can be monitored through calculation and analysis of the controller 73, in the process of synchronous air sucked by the piston cylinder 3 once, the air reserved in the ultrasonic monitoring box 4, the laser monitoring box 5 and the particle collecting box 6 after last monitoring can be completely sucked into the piston cylinder 3, the air reserved in the ultrasonic monitoring box 4, the laser monitoring box 5 and the particle collecting box 6 can pass through the filter membrane 9 arranged in the filter box 8 in the process of sucking into the piston cylinder 3, the filter membrane 9 can filter and reserve particles of PM2.5 in the air in the filter box 8, the weight change of the filter box 8 can be monitored in real time by placing the filter box 8 on the pressure sensor 61, so that the quality of the filtered PM2.5 after single air suction is monitored in real time, signals are transmitted to the controller 73, the amount of the particles of PM2.5 in the air sucked in a single time is calculated through the controller 73, and the corresponding air volume is the capacity in the particle collecting box 6, therefore, the concentration of PM2.5 in the air can be monitored, in the monitoring process, the concentration of the air is calculated and analyzed through the mass change of the filter box 8 after the air is sucked for a certain number of times and the sum of the capacity of the particle collecting box 6 in the working process corresponding to the certain number of times, and the concentration average value of the air concentration PM2.5 in the corresponding time period can be monitored.
When the single air suction is finished, and the signals of the ultrasonic sensor 411, the photoelectric sensor 55 and the pressure sensor 61 are all transmitted to the controller 73, the controller 73 controls the telescopic end of the electric telescopic rod 2 to extend, so as to push the piston head 31 to move upwards in the piston cylinder 3 to discharge the dust-free air sucked in the piston cylinder 3 through the exhaust pipe 32, the dust-free air in the exhaust pipe 32 can be discharged through the laser monitoring box 5, the air delivery pipe 42, the ultrasonic monitoring box 4 and the air inlet channel 15, the air containing particles remained in the monitoring processes of the laser monitoring box 5, the air delivery pipe 42, the ultrasonic monitoring box 4 and the air inlet channel 15 can be discharged in the discharging process, the air remained after the single monitoring of the laser monitoring box 5, the air delivery pipe 42, the ultrasonic monitoring box 4 and the air inlet channel 15 is not containing particles, so as to facilitate the accuracy of monitoring PM2.5 and PM10 in the air next time, it needs to be explained that, the baffle is rotationally connected in the air inlet channel 15, the baffle can block the air inlet channel 15 under the action of self weight under the condition of no air circulation, when air flows in or flows out, the baffle can be pushed to rotate, so that the air can normally flow in or flow out, thereby being convenient for ensuring the use process of the equipment, after the piston cylinder 3 inhales, the accuracy of particles in the monitored air and the dust-free air remained in the ultrasonic monitoring box 4 after the air is discharged by the piston cylinder 3 can not be polluted by contacting with the outside air, meanwhile, in the process that the dust-free air passes through the air conveying pipe 42 and is discharged outwards through the ultrasonic monitoring box 4, a part of dust-free air can discharge the granular air contained in the ultrasonic monitoring box 4, and the other part of dust-free air can enter the backflushing chamber 43 through the communicating pipe 45 and is discharged through the air jet hole 44, thereby blowing the granules settled on the bottom of the ultrasonic monitoring box 4, and is discharged through the air inlet passage 15 so as to further fully discharge the particulate matters in the ultrasonic monitoring box 4, thereby improving the accuracy of monitoring the PM10 in the next air suction working process.
In addition, it should be noted that, during the operation of the piston cylinder 3, in the process of the air flowing through the air pipe 42 into or out of the air pipe, the air pushes the first impeller 424 located in the first driving box 421 to rotate, the first impeller 424 drives the first cam 423 to rotate through the first rotating shaft 422, the first cam 423 pushes the filter screen 49 intermittently during the rotation, so that the filter screen 49 and the filter frame 48 slide in the sliding groove 46 under the cooperation of the spring 471 to vibrate the filter screen 49, particles with a diameter larger than 2.5 μm can be prevented from attaching to the filter screen 49 and affecting the entry of particles of PM2.5 during the air intake process, it can be ensured that no residual particles attach to the filter screen 49 and the particles cannot be fully discharged during the air exhaust process of the piston cylinder 3, the dust-free air can push the second impeller 84 located in the second driving box 34 to rotate when passing through the exhaust pipe 32, the second cam 84 drives the second cam 83 to rotate, the second cam 83 can push the second impeller 83 to abut against the filter screen 9 during the rotation, so that the filter screen 9.5 filter media can be separated from the filter box, and the filter media, so that the PM2 particles can be separated from the filter media 9 or the filter media can be separated from the filter media, and deposited on the filter media, thereby preventing the filter media 8.
Wherein, rotate big chamber door 11 of connection on monitoring box 1 and can be convenient for maintain this equipment use in, rotate little chamber door 13 of connection on big chamber door 11 and can be convenient for dismantle the change to filter cartridge 8, in the long-time use of this equipment, when collecting to the granule in the filter cartridge 8 and piling up and reaching rated mass, can manually open little chamber door 13 and manually take out filter cartridge 8 from placing the mouth that the granule was seted up on collection box 6, and close little chamber door 13 after putting into new filter cartridge 8, carry on spacingly through little chamber door 13 to filter cartridge 8, so that continue to monitor the air particulate matter.
According to the invention, the outside air is sucked and distributed in the ultrasonic monitoring box 4, the laser monitoring box 5 and the particle collecting box 6 through the air suction work of the piston cylinder 3, so that the concentration of PM10 in the sucked air is monitored through the cooperation of the ultrasonic generator 41 and the ultrasonic sensor 411 in the ultrasonic monitoring box 4, the concentration of PM2.5 in the sucked air is monitored through the cooperation of the laser transmitter 52 and the photoelectric sensor 55 in the laser monitoring box 5, and the average concentration of PM2.5 in the monitored air is monitored through the cooperation of the filter box 8, the filter membrane 9 and the pressure sensor 61 in the particle collecting box 6, so that the purpose of monitoring particulate matters in the air is achieved.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (10)
1. An air particulate matter monitoring device, includes monitoring box (1), its characterized in that still includes:
the ultrasonic monitoring box (4) is fixedly connected in the monitoring box (1), the ultrasonic monitoring box (4) is provided with an ultrasonic generator (41) and an ultrasonic sensor (411) corresponding to the ultrasonic generator (41), a filter screen (49) used for filtering partial particles is arranged in the ultrasonic monitoring box (4), and the filter screen (49) divides the ultrasonic monitoring box (4) into a filter cavity and a monitoring cavity;
the air inlet channel (15) is fixedly connected to the monitoring box (1), and the air inlet channel (15) is communicated with the monitoring cavity;
the laser monitoring box (5) is fixedly connected to the ultrasonic monitoring box (4), a laser emitter (52) and a photoelectric sensor (55) corresponding to the laser emitter (52) are installed in the laser monitoring box (5), and the laser monitoring box (5) is communicated with the filter cavity through a gas conveying pipe (42);
the particle collecting box (6) is fixedly connected to the laser monitoring box (5), a pressure sensor (61) is installed in the particle collecting box (6), a filter box (8) is placed on the pressure sensor (61), an air guide pipe (51) is communicated with one end, away from the air conveying pipe (42), of the laser monitoring box (5), one end, away from the laser monitoring box (5), of the air guide pipe (51) is communicated with the particle collecting box (6), and an opening (81) correspondingly communicated with the air guide pipe (51) is formed in the filter box (8);
the particle collecting device is characterized in that the particle collecting device is fixedly connected with a piston cylinder (3) in the monitoring box (1), an air suction pipe (33) and an air exhaust pipe (32) are communicated with the piston cylinder (3), one end, far away from the piston cylinder (3), of the air suction pipe (33) is communicated with the particle collecting box (6), and one end, far away from the piston cylinder (3), of the air exhaust pipe (32) is communicated with the laser monitoring box (5).
2. An airborne particulate monitoring apparatus according to claim 1, characterised in that: fixedly connected with electric telescopic handle (2) in monitoring case (1), fixedly connected with piston head (31) is served in electric telescopic handle (2) are flexible, piston head (31) sliding connection is in piston cylinder (3).
3. An airborne particulate monitoring apparatus according to claim 2, wherein: and the exhaust pipe (32) and the air suction pipe (33) are respectively provided with a first one-way valve.
4. An airborne particulate monitoring apparatus according to claim 1, wherein: the monitoring box is characterized in that a large box door (11) is connected to the monitoring box (1) in a rotating mode, a large handle (12) is fixedly connected to the large box door (11), a small box door (13) is connected to the large box door (11) in a rotating mode, a small handle (14) is fixedly connected to the small box door (13), a placing opening is formed in the particle collecting box (6), and the small box door (13) corresponds to the placing opening.
5. An airborne particulate monitoring apparatus according to claim 1, wherein: seted up sliding tray (46) in ultrasonic wave monitoring box (4), fixedly connected with guide bar (47) in sliding tray (46), sliding connection has filter frame (48) on guide bar (47), filter screen (49) fixed connection is on filtering frame (48), the intercommunication has first drive box (421) on gas-supply pipe (42), the last rotation of ultrasonic wave monitoring box (4) is connected with first pivot (422), first cam (423) of first pivot (422) one end fixedly connected with, first cam (423) edge is laminated with filter screen (49) surface mutually, first pivot (422) other end extends to first impeller (424) of fixedly connected with in first drive box (421), first impeller (424) cooperate with gas-supply pipe (42), the cover is equipped with spring (471) on guide bar (47), spring (471) one end and sliding tray (46) inner wall fixed connection, the spring (471) other end and filter frame (48) fixed connection.
6. An airborne particulate monitoring apparatus according to claim 5, wherein: seted up recoil chamber (43) in ultrasonic wave monitoring box (4), the intercommunication has a plurality of fumaroles (44) on recoil chamber (43), fumarole (44) are located ultrasonic wave monitoring box (4) bottom and slope towards inlet channel (15), recoil chamber (43) are linked together through communicating pipe (45) and filter chamber.
7. An airborne particulate monitoring apparatus according to claim 1, wherein: a first lens (53) and a second lens (54) are fixedly connected in the laser monitoring box (5), the first lens (53) corresponds to the laser emitter (52), and the second lens (54) corresponds to the photoelectric sensor (55).
8. An airborne particulate monitoring apparatus according to claim 1, characterised in that: the filter box is characterized in that a filter opening is formed in the filter box (8), a limiting clamping groove is formed in the filter opening, a frame (91) is connected in the limiting clamping groove in a sliding mode, a filter membrane (9) is fixedly connected to the frame (91), and the filter membrane (9) is inclined.
9. An airborne particulate monitoring apparatus according to claim 8, further comprising: the utility model discloses a filter membrane filter, including blast pipe (32), blast pipe (32) go up the intercommunication have second drive box (34), it is connected with second pivot (82) to rotate on particle collection box (6), second pivot (82) one end fixedly connected with second cam (83), second cam (83) laminate mutually with filter membrane (9), second pivot (82) other end extends to fixedly connected with second impeller (84) in second drive box (34), second impeller (84) cooperate with blast pipe (32).
10. An airborne particulate monitoring apparatus according to claim 1, wherein: still include battery (72) and controller (73), battery (72) and the equal fixed connection of controller (73) you are at monitoring case (1) top, bracing piece (71) fixedly connected with solar cell panel (7) are passed through at monitoring case (1) top, battery (72) and controller (73), solar cell panel (7), electric telescopic handle (2) electric connection.
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| CN117607359A (en) * | 2023-11-20 | 2024-02-27 | 廊坊市环境监控中心 | Atmospheric pollution monitoring facilities |
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