CN111060429A - Ultralow dust measuring device - Google Patents
Ultralow dust measuring device Download PDFInfo
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- CN111060429A CN111060429A CN201911377233.2A CN201911377233A CN111060429A CN 111060429 A CN111060429 A CN 111060429A CN 201911377233 A CN201911377233 A CN 201911377233A CN 111060429 A CN111060429 A CN 111060429A
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- low dust
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- 239000000428 dust Substances 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 7
- 239000013618 particulate matter Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 108090000565 Capsid Proteins Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation 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
-
- 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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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to an ultra-low dust measuring device, which comprises a forward measuring area, a laser module and a control module, wherein the forward measuring area is arranged in an inner cavity of a front shell and enables particles of light beams emitted by the laser module to pass through the measuring area to generate forward scattering light beams; the cone lens is arranged at the joint position of the inner parts of the front shell and the rear shell and converts the incident forward scattering light beam into a parallel light beam; the reflecting mirror is obliquely arranged in the inner cavity of the rear shell and enables the incident parallel light beams to be vertically emitted after being reflected. The spherical mirror conventionally configured in the measurement area of the conventional dust measurement device is optimized to adopt the cone lens, so that the accuracy of the measurement area is improved; meanwhile, the measuring region is arranged at the front section of the closed part of the device to form a forward scattering structure, so that the measuring region is favorable for further improving the measuring accuracy under the state of being free from external interference, and the sensitivity of the overall measurement of the device is also favorable for improving.
Description
Technical Field
The invention relates to the technical field of dust detection, in particular to an ultralow dust measuring device.
Background
The dust concentration detection method comprises the steps of measuring the dust concentration by using a B-ray method, wherein the dust concentration is measured by using a B-ray method, and then the measured dust concentration is measured by using a microwave method.
Therefore, in order to meet the application requirements of dust detection, those skilled in the art need to continuously optimize the currently used detection devices or detection means, so that the structures of the detection devices are more rigorous, the detection is more accurate, and the application is more convenient.
Before optimization, the research and development personnel of the technical scheme of the invention find several factors which are unfavorable for improving the detection effect due to the incomplete structure of the device, including the reduction of the working accuracy of a measurement area, the poor sensitivity of the device and the easy external interference during measurement by combining practical application statistics.
In summary, the present invention provides a further optimization of the structure of the detection device in the field of dust detection technology based on the prior art and by combining with the experience continuously summarized in the practical application process, and provides an ultra-low dust measurement device, which optimizes the conventionally configured spherical mirror of the measurement region to the conical lens, and sets the measurement region at the front section of the closed portion of the device itself while adopting forward scattering, so as to not only improve the measurement accuracy of the measurement region in the state of being free from external interference, but also improve the sensitivity of the overall measurement of the device.
Compared with the conventional similar device, the technical scheme of the invention also solves the common problems existing all the time, if an ultra-low dust measuring device is designed according to the technical means of the technical scheme of the invention or the conventional similar device is effectively improved by using the technical means, the problems in the prior art can be solved or partially solved, meanwhile, the technical scheme of the invention is beneficial to technical personnel in the technical field to continuously optimize on the basis of the technical scheme of the invention to solve other technical problems, and the implementation of the technical scheme of the invention can determine that the technical scheme of the invention is also beneficial to the further expansibility of the dust measuring technology.
Disclosure of Invention
In order to overcome the above problems or at least partially solve or alleviate the above problems, the present invention provides an ultra-low dust measurement apparatus, which optimizes a spherical mirror conventionally configured in a measurement region to use a cone lens, and sets the measurement region in a front section of a closed portion of the apparatus itself while using forward scattering, so that the measurement region is not only protected from external interference, but also the measurement accuracy is improved, and the sensitivity of the entire measurement of the apparatus is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
an ultra-low dust measuring device with front and rear housings communicating with each other inside, wherein a front end of the front housing is equipped with a laser assembly for emitting a light beam, and wherein a lower end of the rear housing is equipped with a receiving sensor for converging the light beam, the dust measuring device comprising:
a forward measurement region disposed in the front housing interior cavity and configured to generate a forward scattered beam of light from the particulate matter passing through the measurement region from the beam of light emitted by the laser assembly;
a cone lens which is arranged at the joint position of the inner parts of the front and the rear shells and converts the incident forward scattering light beam into a parallel light beam;
and the reflecting mirror is obliquely arranged in the inner cavity of the rear shell and enables the incident parallel light beams to be vertically emitted after being reflected.
Aiming at the technical scheme of the invention implemented above, on the basis of the same conception, a technician can also adopt corresponding technical means for further implementation, including:
the dust measuring device also comprises a receiving lens horizontally arranged above the receiving sensor, and the receiving lens is used for converging the light beam vertically emitted by the reflecting mirror on the receiving sensor;
the dust measuring device also comprises a light trapping assembly arranged at the central position of the conical lens and used for absorbing light beams which are emitted into the conical lens to generate reflected light so as to interfere measurement;
accordingly, these measurement-disturbing beams comprise a laser beam which passes through the measurement area and perpendicularly enters the center of the axicon lens.
Alternatively, the light trapping assembly is preferably a cylindrical light trapping assembly with a blackened surface.
In view of the above technical solutions, the technical staff can further implement technical means for the structures of the front and rear housings, including:
the front shell and the rear shell adopt a quick sealing mode, and the forward measuring area is positioned in front of a sealing part in the front shell;
the sealing part divides the measuring device into a forward measuring area and a backward reflecting area.
Further, the rear shell comprises a horizontal section and a vertical section which are communicated with each other;
wherein, horizontal segment one end links up and seals through the sealing washer between the preceding, the back casing with the one end of procapsid.
The spherical mirror conventionally configured in the measurement area of the conventional dust measurement device is optimized to adopt the cone lens, so that the accuracy of the measurement area is improved; meanwhile, the measuring region is arranged at the front section of the closed part of the device to form a forward scattering structure, so that the measuring region is favorable for further improving the measuring accuracy under the state of being free from external interference, and the sensitivity of the overall measurement of the device is also favorable for improving.
Drawings
The invention is explained in further detail below with reference to the drawing.
FIG. 1 is a schematic view of an ultra-low dust measurement device implemented by the present invention.
In the figure:
1. a laser assembly;
2. a measurement zone;
3. a front housing;
4. an axicon lens;
5. a seal ring;
6. a rear housing;
7. a mirror;
8. a light trapping assembly;
9. a receiving lens;
10. a sensor is received.
Detailed Description
The ultra-low dust measuring device to be implemented by the technical scheme of the invention aims to solve the problem that the traditional device for measuring dust by adopting a light scattering method is poor in detection effect easily due to unreasonable structure, and needs to overcome several factors causing the problem, including reduction of working accuracy of a measuring area, poor sensitivity of the device and easiness in external interference during measurement.
The technical scheme of the invention mainly relates to the optimization of a device adopted in the link from a laser to a receiving sensor when a light scattering method is adopted for dust measurement, and in the actual work, when the specific numerical value is measured, other auxiliary electronic equipment is probably needed, and different technicians can be assembled according to different use requirements; since the assembling condition of the measuring device may be different from the testing system using the device, for the conventional technical means which are not within the technical scheme of the present invention, for example, the assembling mode of the device, the adaptability of the measuring system using the device, the connecting mode of the device and other measuring link devices, etc., the technical staff can adopt the conventional technical means in the field to realize the method, and the specific implementation mode of the present invention does not need to refine the devices, the installation positions, the installation components, the assembling process, etc., of different models used by each assembling and connecting link. Therefore, the technical solution implemented by the present invention is actually a main solution that can be referred and implemented by those skilled in the art by combining with conventional technical means, and those skilled in the art can implement the ultra-low dust measurement device optimized according to the present invention by combining with their different application conditions, so as to actually obtain a series of advantages, which will be gradually reflected in the following analysis of the device structure.
Before the technical solution of the present invention is analyzed, designers of the technical solution of the present invention need to point out that the measuring apparatus is mainly formed by a process from a laser component to a receiving sensor, if the two apparatuses are analyzed separately, both the laser part and the receiving sensor part are currently common devices, and the circuit connection of the two devices is already a conventional technical means in the electronic field, and technicians at any level can complete the circuit connection by means of their basic skills or operation instructions of the devices themselves, so that the technical solution of the present invention actually includes the constructed apparatuses, and does not modify the selected devices, and thus, the circuit parts of the adopted devices themselves remain unchanged, and no changes are made to the components of the circuits of the devices themselves or the connection of the circuits, in the process of implementing the technical scheme of the present invention, all technical means related to the selection of circuit components, the connection of circuit components, and the like completely adopt conventional technical means, which are not included in the technical scheme of the present invention and are not described again.
As shown in fig. 1, the ultra-low dust measuring device implemented by the technical solution of the present invention comprises a front housing 3 and a rear housing 6 for mounting optical elements, a laser component 1 is mounted on the front end of the front housing 3, the rear housing 6 comprises a horizontal section and a vertical section which are communicated with each other, and the front housing 3 and the rear housing 6 are implemented by the following detailed technical means:
firstly, a technician can adopt a corresponding closing means, wherein one end of the horizontal section of the rear shell 6 is connected with one end of the front shell 3, the front shell and the rear shell are sealed by a sealing ring 5, and the front shell and the rear shell are also easily separated so as to be convenient for cleaning the pollution on the lens; meanwhile, the sealing position is used as a boundary, the inner cavity of the measuring device is divided into a forward area and a backward area, and the backward area forms a reflecting area;
accordingly, a receiving sensor 10 is installed at the bottom center of the vertical section of the rear case 6, and a receiving lens 9 is horizontally disposed above the receiving sensor 10.
Furthermore, the measurement area 2 is arranged in the front shell 3, so that the main body measurement area is ensured to be in the forward area of the inner cavity of the measurement device, the sensitivity can be improved through forward scattering, and meanwhile, compared with the conventional measurement mode of arranging the measurement area in the closed front section, the measurement mode is easier to avoid external interference;
furthermore, the cone lens 4 is arranged at the inner connection position of the front shell 3 and the rear shell 6, and the arranged cone lens 4 replaces a spherical mirror adopted in the past, so that the accuracy of a measuring area is improved; meanwhile, in a specific layout, a technician may carry out the method according to a conventional technical means, so that a collimated light beam emitted by the laser assembly 1 enters the measuring region 2 inside the front housing 3, and forward scattering generated by particles in the measuring region 2 is converted into parallel light by the conical lens 4;
further, a reflecting mirror 7 is obliquely arranged inside the rear housing 6 so that the parallel light passing through the axicon 4 is reflected by the reflecting mirror 7 and then vertically incident on the receiving lens 9, so that the smoke dust concentration collected by the receiving sensor 10 is received by the receiving lens 9 for analysis in the measuring area.
The ultra-low dust measuring device implemented by the above technical solution of the present invention further includes, in a specific implementation, a cylindrical light trapping assembly 8 with a blackened surface, which is disposed at a central position of the axicon lens 4, and is used for absorbing laser beams that pass through the measuring region 2 and perpendicularly enter the central position of the axicon lens 4, so as to prevent the laser beams from generating reflected light to interfere measurement of scattered light.
In the description herein, the appearances of the phrases "embodiment one," "this embodiment," "specific implementation," and the like in this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example; furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present specification, the terms "connect", "mount", "fix", "set", "have", and the like are used in a broad sense, for example, the "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person skilled in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.
The above description of the embodiments is intended to enable those skilled in the art to understand and apply, and it will be apparent to those skilled in the art that various modifications may be made without departing from the spirit and scope of the invention and that the present invention is not limited to the above embodiments, and it is within the scope of the invention to implement ① a novel technical solution based on the technical solution of the present invention and combined with the common general knowledge of the prior art, which has no technical effect beyond the technical effect of the present invention, ② a technical equivalent replacement of part of the features of the technical solution of the present invention by using the known technology, which has the technical effect the same as the present invention, ③ a technical solution of the present invention based on which the substance of the expanded technical solution does not exceed the technical solution of the present invention, ④ a technical solution obtained by using the equivalent transformation described in the text of the present invention is applied to other related technical solutions.
Claims (10)
1. An ultra-low dust measuring device having front and rear housings communicating with each other inside, wherein a laser module for emitting a light beam is mounted to a front end of the front housing, and wherein a receiving sensor for converging the light beam is mounted to a lower end of the rear housing, said dust measuring device comprising:
a forward measurement zone disposed within the front housing interior cavity and configured to generate a forward scattered beam of light from particulate matter passing through the measurement zone from the beam of light emitted by the laser assembly;
a cone lens disposed at a junction position inside the front and rear housings and converting an incident forward scattered light beam into a parallel light beam;
and the reflecting mirror is obliquely arranged in the inner cavity of the rear shell and enables the incident parallel light beams to be vertically emitted after being reflected.
2. The ultra-low dust measuring device of claim 1, wherein: the receiving lens is horizontally arranged above the receiving sensor and used for converging the light beams vertically emitted by the reflecting mirror on the receiving sensor.
3. The ultra-low dust measuring device of claim 1, wherein: the light trap assembly is arranged at the center of the conical lens and used for absorbing light beams which are emitted into the conical lens to generate reflected light so as to interfere measurement.
4. The ultra-low dust measuring device of claim 3, wherein: the light trapping assembly comprises a cylindrical light trapping assembly with a blackened surface.
5. The ultra-low dust measuring device of claim 3, wherein: the measuring-disturbing beam comprises a laser beam passing through the measuring region and perpendicularly entering the center of the axicon lens.
6. The ultra-low dust measuring device of any one of claims 1 to 5, wherein: the front and rear housings are quick seal and the forward measurement area is in front of the seal inside the front housing.
7. The ultra-low dust measuring device of claim 6, wherein: the seal divides the measuring device into a forward measuring region and a retroreflective region.
8. The ultra-low dust measuring device of claim 1, wherein: the rear housing includes a horizontal section and a vertical section that are in communication with each other.
9. The ultra-low dust measuring device of claim 8, wherein: one end of the horizontal section is connected with one end of the front shell, and the front shell and the rear shell are sealed through a sealing ring.
10. The ultra-low dust measuring device of claim 9, wherein: the receiving sensor position is at a bottom center position of a vertical section of the rear housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377233.2A CN111060429A (en) | 2019-12-27 | 2019-12-27 | Ultralow dust measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377233.2A CN111060429A (en) | 2019-12-27 | 2019-12-27 | Ultralow dust measuring device |
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| Publication Number | Publication Date |
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| CN111060429A true CN111060429A (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911377233.2A Pending CN111060429A (en) | 2019-12-27 | 2019-12-27 | Ultralow dust measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912755A (en) * | 2020-08-07 | 2020-11-10 | 山东中煤工矿物资集团有限公司 | Mining dust concentration sensor, sensor system and method |
| CN112014280A (en) * | 2020-08-27 | 2020-12-01 | 苏州亿利安机电科技有限公司 | On-line detection method of direct-reading dust concentration measuring instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488138A (en) * | 1987-09-30 | 1989-04-03 | Shibata Kagaku Kikai Kogyo Kk | Densitometer for suspended dust |
| CN105865997A (en) * | 2016-06-07 | 2016-08-17 | 中国科学院合肥物质科学研究院 | Atmospheric raise dust concentration measuring device and method based on forward scattering principle |
| CN109804233A (en) * | 2016-10-11 | 2019-05-24 | 马尔文帕纳科公司 | Particle characterization instrument |
| CN110296919A (en) * | 2019-07-30 | 2019-10-01 | 常熟市鼎睿智能测控有限公司 | A kind of suspended particulate matter concentration monitoring device based near forward scattering light detection |
| CN211477987U (en) * | 2019-12-27 | 2020-09-11 | 民政部一零一研究所 | Ultralow dust measuring device |
-
2019
- 2019-12-27 CN CN201911377233.2A patent/CN111060429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6488138A (en) * | 1987-09-30 | 1989-04-03 | Shibata Kagaku Kikai Kogyo Kk | Densitometer for suspended dust |
| CN105865997A (en) * | 2016-06-07 | 2016-08-17 | 中国科学院合肥物质科学研究院 | Atmospheric raise dust concentration measuring device and method based on forward scattering principle |
| CN109804233A (en) * | 2016-10-11 | 2019-05-24 | 马尔文帕纳科公司 | Particle characterization instrument |
| CN110296919A (en) * | 2019-07-30 | 2019-10-01 | 常熟市鼎睿智能测控有限公司 | A kind of suspended particulate matter concentration monitoring device based near forward scattering light detection |
| CN211477987U (en) * | 2019-12-27 | 2020-09-11 | 民政部一零一研究所 | Ultralow dust measuring device |
Non-Patent Citations (1)
| Title |
|---|
| Ю.А.赫拉莫夫著 等: "世界物理学家词典", 30 November 1988, 湖南教育出版社, pages: 264 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912755A (en) * | 2020-08-07 | 2020-11-10 | 山东中煤工矿物资集团有限公司 | Mining dust concentration sensor, sensor system and method |
| CN111912755B (en) * | 2020-08-07 | 2021-08-10 | 山东中煤工矿物资集团有限公司 | Mining dust concentration sensor, sensor system and method |
| CN112014280A (en) * | 2020-08-27 | 2020-12-01 | 苏州亿利安机电科技有限公司 | On-line detection method of direct-reading dust concentration measuring instrument |
| CN112014280B (en) * | 2020-08-27 | 2023-11-24 | 苏州亿利安机电科技有限公司 | On-line detection method of direct-reading dust concentration measuring instrument |
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