CN217006879U

CN217006879U - Dust detector based on laser scattering

Info

Publication number: CN217006879U
Application number: CN202220544408.5U
Authority: CN
Inventors: 许根明; 王佳东; 王家妍; 赵雅萍
Original assignee: Zhejiang Sanfang Testing Technology Co ltd
Current assignee: Zhejiang Sanfang Testing Technology Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-19
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses a dust detector based on laser scattering, relating to the technical field of dust detectors, the dust detector based on laser scattering comprises a shell, a first air duct is arranged in the shell, a second air duct is arranged in the shell and close to the upper part of the first air duct, an air pump is arranged in the second air duct, a singlechip is arranged at the top in the shell, and one side of the singlechip is provided with a silicon photocell, the inside of the second air duct is provided with an air pump, the inside of the first air duct is provided with a protection device, the protective device comprises a mounting frame, a first protective cover and a second protective cover which are arranged on the mounting frame, through installation protection device in the casing, be favorable to improving laser generating device's life, through the refraction board device of installation convenient to detach on the casing to guaranteed to utilize the precision that laser scattering principle detected dust concentration.

Description

Dust detector based on laser scattering

Technical Field

The utility model relates to the technical field of dust detectors, in particular to a dust detector based on laser scattering.

Background

The dust detector realizes the monitoring of particulate matters such as dust in the air through microcomputer laser control, and along with the development of environmental protection career, people's environmental awareness improves, has had higher standard, higher requirement to air quality. The application of the dust monitor is more and more extensive, and the existing dust monitor mainly adopts the principle of laser scattering;

in chinese publication No. CN205538672U, the patent name is a particulate matter mass concentration detection device's in air utility model patent based on laser scattering principle mentions, improvement through the hardware circuit, the accuracy and the uniformity of sensor have been promoted by a wide margin, but above-mentioned particulate matter mass concentration detection device patent still has the weak point when in-service use in air based on laser scattering principle, laser generator does not have protective structure at the device inside, in the detection achievement, the dust covers on laser generator, easily damage laser generator for a long time, and be used for the clearance of laser scattering refraction board also be convenient for, the surface is covered by the dust after, laser irradiation can't refract on it, the influence detects the precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dust detector based on laser scattering to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: dust detector based on laser scattering, which comprises a housin, first wind channel has been seted up to the inside of casing, the inside top that is close to first wind channel of casing has seted up the second wind channel, the internally mounted in second wind channel has the air pump, the singlechip is installed at the inside top of casing, and one side of singlechip installs silicon photocell, the internally mounted in first wind channel has protection device, protection device includes the mounting bracket, installs first safety cover and the second safety cover on the mounting bracket, all seted up the standing groove on first safety cover and the second safety cover, the internally mounted of standing groove has laser generating device, the opening has all been seted up to the tip of first safety cover and second safety cover, refraction board device is installed to casing bottom one side.

Preferably, the refraction board device includes the refraction board, installs at the connecting rod of refraction board rear surface, installs at the magnetic sheet of connecting rod one end, installs at the mounting panel of magnetic sheet side and installs the handle in mounting panel one side, magnetic sheet, mounting panel and handle are located the outside of casing, refraction board and connecting rod are located the air outlet one side that is close to first wind channel in the casing.

Preferably, a through hole is formed in one side of the bottom of the shell, the connecting rod penetrates through the through hole, and an iron plate is mounted on one side, close to the through hole, of the shell.

Preferably, the front surface mounting of casing has the display screen, the horizontal pole is all installed to the outer wall of first safety cover and second safety cover, and the inserted block is all installed to the tip of two horizontal poles, two slots have been seted up to the inner wall symmetry of mounting bracket, inserted block and slot transition fit.

Preferably, the jack has been seted up to the inner wall of first safety cover, the bolt corresponding with the jack has been seted up to the inner wall of second safety cover, the winding displacement groove has all been seted up to the inner wall of first safety cover and second safety cover one side that is close to the standing groove, and the winding displacement hole has been seted up to one side that is close to the winding displacement groove on the first safety cover.

Preferably, a baffle is arranged between the first air duct and the second air duct, the air outlet of the first air duct is communicated with the air inlet of the second air duct, an air inlet pipe is arranged on one side, close to the air inlet of the first air duct, of the shell, and an air outlet pipe is arranged on one side, close to the air outlet of the second air duct, of the shell.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the protection device is arranged in the shell, the laser generation device is arranged on the protection device, the protection device mainly comprises the mounting frame and the two protection covers, the laser generation device is arranged between the first protection cover and the second protection cover, the end parts of the first protection cover and the second protection cover are provided with the openings, laser is emitted from the openings, the laser generation device is protected by the protection device, the laser generation device does not need to be cleaned frequently, and the service life of the laser generation device is prolonged.

2. According to the dust concentration detection device, the refraction plate device convenient to detach is installed on the shell, the through hole is formed in one side of the bottom of the shell, the refraction plate device can freely move in the through hole through external pulling force or pushing force, after the dust monitor is used for a long time, the refraction plate is extracted to the outside of the shell and then cleaned, the cleanness of the surface of the refraction plate is favorably kept, laser is favorably refracted through the refraction plate, and therefore the accuracy of detecting the dust concentration by using the laser scattering principle is guaranteed.

Drawings

FIG. 1 is an external view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention with the refraction plate removed;

FIG. 4 is a schematic structural diagram of a refraction plate device according to the present invention;

FIG. 5 is a schematic structural diagram of the protection device of the present invention;

FIG. 6 is a schematic view of a second protective cover according to the present invention;

FIG. 7 is a schematic structural diagram of the first protective cover of the present invention.

In the figure: 1. an air inlet pipe; 2. an air outlet pipe; 3. a housing; 4. a display screen; 5. a magnetic plate; 6. Mounting a plate; 7. a handle; 8. a first air duct; 9. a mounting frame; 10. a first protective cover; 11. A refracting plate; 12. a connecting rod; 13. an air pump; 14. an iron plate; 15. a second air duct; 16. a single chip microcomputer; 17. a silicon photocell; 18. a through hole; 19. a cross bar; 20. a second protective cover; 21. inserting a block; 22. a slot; 23. a jack; 24. a wire arrangement groove; 25. a placement groove; 26. a wire arranging hole; 27. And (4) a bolt.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 7, the present invention provides the following technical solutions: a dust detector based on laser scattering comprises a shell 3, a first air channel 8 is formed inside the shell 3, a second air channel 15 is formed inside the shell 3 and above the first air channel 8, an air pump 13 is installed inside the second air channel 15, a single chip microcomputer 16 is installed at the top inside the shell 3, a silicon photocell 17 is installed on one side of the single chip microcomputer 16, a protection device is installed inside the first air channel 8 and comprises an installation frame 9, a first protection cover 10 and a second protection cover 20 which are installed on the installation frame 9, placing grooves 25 are formed in the first protection cover 10 and the second protection cover 20, laser generation devices are installed inside the placing grooves 25, openings are formed in the end portions of the first protection cover 10 and the second protection cover 20, a refraction plate device is installed on one side of the bottom of the shell 3, the laser generation devices, the air pump 13 and the silicon photocell 17 are connected with the single chip microcomputer 16 through data cables, control laser generator through singlechip 16, air pump 13 and silicon photocell 17 work, extract 3 outside air of casing through air pump 13, the air gets into first wind channel 8 from intake pipe 1, get into second wind channel 15 through first wind channel 8, discharge from outlet duct 2 at last, after dusty air gets into first wind channel 8, send laser through laser generator, laser irradiation is in dusty air, after laser irradiation is on refraction board 11, through refraction board 11 with laser refraction to silicon photocell 17 on, silicon photocell 17 receives laser irradiation back, give singlechip 16 with detection information transfer, singlechip 16 handles the information that detects, thereby accomplish the dust detection.

Specifically, the refraction plate device includes refraction plate 11, install at the connecting rod 12 of 11 rear surfaces of refraction plate, install the magnetic sheet 5 in connecting rod 12 one end, install at the mounting panel 6 of 5 sides of magnetic sheet and install the handle 7 in mounting panel 6 one side, magnetic sheet 5, mounting panel 6 and handle 7 are located the outside of casing 3, refraction plate 11 and connecting rod 12 are located casing 3 and are close to air outlet one side of first wind channel 8, when dismantling refraction plate 11, the user pulls handle 7 with the hand, handle 7 drives mounting panel 6, mounting panel 6 drives magnetic sheet 5, magnetic sheet 5 breaks away from iron plate 14, magnetic sheet 5 drives connecting rod 12, connecting rod 12 drives refraction plate 11, refraction plate 11 is pulled to the casing 3 outside this moment, clean the surface of refraction plate 11 is cleaned at last, after the cleanness, install refraction plate 11 in situ again.

Further, through-hole 18 has been seted up to bottom one side of casing 3, and connecting rod 12 runs through-hole 18, and iron plate 14 is installed to one side that is close to through-hole 18 on the casing 3, and when installation refraction board 11, refraction board 11 passes through-hole 18, then magnetism board 5 adsorbs iron plate 14, and magnetism board 5 and iron plate 14 laminating, refraction board 11 are installed inside casing 3 this moment.

Further, the front surface mounting of casing 3 has display screen 4, horizontal pole 19 is all installed to the outer wall of first safety cover 10 and second safety cover 20, and inserted block 21 is all installed to the tip of two horizontal poles 19, two slots 22 have been seted up to the inner wall symmetry of mounting bracket 9, inserted block 21 and slot 22 transition fit, laser generating device installs the back between first safety cover 10 and second safety cover 20, insert block 21 into slot 22, first safety cover 10 and the unsettled installation of second safety cover 20 are on mounting bracket 9 this moment, the air can pass through mounting bracket 9.

Further, jack 23 has been seted up to the inner wall of first safety cover 10, bolt 27 corresponding with jack 23 has been seted up to the inner wall of second safety cover 20, winding displacement groove 24 has all been seted up to the one side that the inner wall of first safety cover 10 and second safety cover 20 is close to standing groove 25, and winding displacement hole 26 has been seted up to one side that is close to winding displacement groove 24 on the first safety cover 10, after putting into standing groove 25 with laser generating device, laminate first safety cover 10 and the 20 inner wall of second safety cover, then bolt 27 inserts jack 23, first safety cover 10 and second safety cover 20 interconnect this moment, the opening part at first safety cover 10 and the 20 tip of second safety cover is installed to the one end that laser generating device jetted out laser, laser jets out from the opening part.

Furthermore, a baffle plate is arranged between the first air duct 8 and the second air duct 15, an air outlet of the first air duct 8 is communicated with an air inlet of the second air duct 15, an air inlet pipe 1 is installed on one side, close to the air inlet of the first air duct 8, of the shell 3, an air outlet pipe 2 is installed on one side, close to the air outlet of the second air duct 15, of the shell 3, and under the action of suction force of the air pump 13, air passes through the air inlet pipe 1, the first air duct 8 and the second air duct 15 and is finally discharged from the air outlet pipe 2.

The using method of the embodiment comprises the following steps: when the dust detection device is used, the air pump 13 is started, the air pump 13 extracts air outside the shell 3, the air enters the first air channel 8 from the air inlet pipe 1, enters the second air channel 15 through the first air channel 8, is finally discharged from the air outlet pipe 2, the dust-containing air enters the first air channel 8, the laser is emitted through the laser generating device, the laser is irradiated in the dust-containing air, the laser is irradiated on the refraction plate 11 and is refracted to the silicon photocell 17 through the refraction plate 11, the silicon photocell 17 transmits detection information to the single chip microcomputer 16 after being irradiated by the laser, the single chip microcomputer 16 processes the detected information, thereby completing dust detection, when the refraction plate 11 is disassembled, a user pulls the handle 7 by hand, the handle 7 drives the mounting plate 6, the mounting plate 6 drives the magnetic plate 5, the magnetic plate 5 is separated from the iron plate 14, the magnetic plate 5 drives the connecting rod 12, the connecting rod 12 drives the refraction plate 11, at the moment, the refraction plate 11 is pulled to the outside of the shell 3, finally, the surface of the refraction plate 11 is cleaned by wiping, after cleaning, the refraction plate 11 is installed at the original position, when the refraction plate 11 is installed, the refraction plate 11 passes through the through hole 18, then the magnetic plate 5 absorbs the iron plate 14, the magnetic plate 5 is jointed with the iron plate 14, the refraction plate 11 is arranged in the shell 3, after the laser generating device is placed in the placing groove 25, the inner walls of the first protective cover 10 and the second protective cover 20 are jointed, then the plug 27 is inserted into the insertion hole 23, at this time, the first protective cover 10 and the second protective cover 20 are connected with each other, one end of the laser generating device emitting laser is installed at the opening of the end of the first protective cover 10 and the second protective cover 20, the laser is emitted from the opening, after the laser generating device is installed, the insert 21 is inserted into the slot 22, and the first protective cover 10 and the second protective cover 20 are mounted on the mounting frame 9 in a suspended manner, so that air can pass through the mounting frame 9.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a dust detector based on laser scattering, includes casing (3), first wind channel (8) have been seted up to the inside of casing (3), second wind channel (15) have been seted up to the inside top that is close to first wind channel (8) of casing (3), the internally mounted of second wind channel (15) has air pump (13), singlechip (16) are installed at the inside top of casing (3), and silicon photocell (17), its characterized in that are installed to one side of singlechip (16): the internally mounted of first wind channel (8) has protection device, protection device includes mounting bracket (9), installs first safety cover (10) and second safety cover (20) on mounting bracket (9), standing groove (25) have all been seted up on first safety cover (10) and second safety cover (20), the internally mounted of standing groove (25) has laser generating device, the opening has all been seted up to the tip of first safety cover (10) and second safety cover (20), the refraction board device is installed to casing (3) bottom one side.

2. A laser scattering based dust detector as claimed in claim 1, wherein: the refraction board device comprises a refraction board (11), a connecting rod (12) arranged on the rear surface of the refraction board (11), a magnetic board (5) arranged at one end of the connecting rod (12), a mounting board (6) arranged on one side of the magnetic board (5) and a handle (7) arranged on one side of the mounting board (6), wherein the magnetic board (5), the mounting board (6) and the handle (7) are arranged outside the shell (3), and the refraction board (11) and the connecting rod (12) are arranged on one side of an air outlet close to the first air duct (8) in the shell (3).

3. A laser scattering based dust detector as claimed in claim 2, wherein: through-hole (18) have been seted up to bottom one side of casing (3), connecting rod (12) run through-hole (18), iron plate (14) are installed to one side that is close to through-hole (18) on casing (3).

4. A laser scattering based dust detector as claimed in claim 3, wherein: the utility model discloses a safety protection device for a vehicle, including casing (3), the preceding surface mounting of casing (3) has display screen (4), horizontal pole (19) are all installed to the outer wall of first safety cover (10) and second safety cover (20), and insert block (21) are all installed to the tip of two horizontal poles (19), two slot (22) have been seted up to the inner wall symmetry of mounting bracket (9), insert block (21) and slot (22) transition fit.

5. A laser scattering based dust detector as claimed in claim 4, wherein: jack (23) have been seted up to the inner wall of first safety cover (10), bolt (27) corresponding with jack (23) have been seted up to the inner wall of second safety cover (20), winding displacement groove (24) have all been seted up to one side that the inner wall of first safety cover (10) and second safety cover (20) is close to standing groove (25), and winding displacement hole (26) have been seted up to one side that is close to winding displacement groove (24) on first safety cover (10).

6. A laser scattering based dust detector as claimed in claim 5, wherein: there is the baffle that separates between first wind channel (8) and second wind channel (15), the air outlet in first wind channel (8) communicates with each other with the air intake in second wind channel (15), be close to first wind channel (8) air intake one side on casing (3) and install intake pipe (1), outlet duct (2) are installed to air outlet one side that is close to second wind channel (15) on casing (3).