CN114018770A - Multifunctional dust detection device - Google Patents

Multifunctional dust detection device Download PDF

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Publication number
CN114018770A
CN114018770A CN202111394348.XA CN202111394348A CN114018770A CN 114018770 A CN114018770 A CN 114018770A CN 202111394348 A CN202111394348 A CN 202111394348A CN 114018770 A CN114018770 A CN 114018770A
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dust
detection channel
air duct
bevel gear
particle size
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CN202111394348.XA
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CN114018770B (en
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沙永东
孙洋
石佳旺
李浩南
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Liaoning Technical University
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Liaoning Technical University
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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
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • 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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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
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Abstract

A multifunctional dust detection device comprises a shell, a first laser emitter, a photoelectric sensor, a second laser emitter, a photoelectric detector, a spatial filter, a lens and a posture adjusting mechanism; the shell is arranged on the posture adjusting mechanism; an air duct, a dust concentration detection channel and a dust particle size detection channel are respectively arranged in the shell; the air duct is horizontally arranged, and fans are arranged at the air inlet and the air outlet; the dust concentration detection channel is vertically arranged and communicated with the air duct in an intersecting manner; the first laser emitter is positioned at the top of the dust concentration detection channel, and the photoelectric sensor is positioned at the bottom of the dust concentration detection channel; the dust particle size detection channel is horizontally arranged, is vertical to the dust concentration detection channel and is communicated with the air duct in an intersecting way; the second laser emitter and the photoelectric detector are respectively positioned at two ends of the dust particle size detection channel; the space filter is positioned between the second laser transmitter and the air duct; the lens is positioned between the photoelectric detector and the air duct; an alarm is arranged outside the posture adjusting mechanism; the top of the shell is provided with an air quantity sensor.

Description

Multifunctional dust detection device
Technical Field
The invention belongs to the technical field of dust detection, and particularly relates to a multifunctional dust detection device.
Background
When mining machinery equipment works underground, a large amount of dust is generated and can be quickly dissipated into the air along with underground ventilation airflow, and if the content of the dust in the air is too high, the physical health of underground workers can be affected, and safety accidents such as dust explosion and the like can be caused, so that casualties and equipment loss are caused.
Therefore, it is necessary to detect dust in the air in real time during the operation in the well. At present, the underground dust detection work mainly adopts manual detection, but the accuracy of data of the manual detection is low, the detection mode is single, and meanwhile, the detection personnel are in a high-concentration dust environment for a long time, so that the body health of the detection personnel is inevitably affected.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multifunctional dust detection device which can simultaneously meet the detection requirements of dust concentration, dust particle size and ambient air quantity, and is more convenient in data collection; the working range and the working angle can be automatically adjusted, and the adaptability of the device to the environment is enhanced; the dust detection alarm device is additionally provided with an alarm function, and when the dust detection data exceeds a safety value, the alarm can be automatically triggered, so that safety guarantee is provided for underground operation personnel.
In order to achieve the purpose, the invention adopts the following technical scheme: a multifunctional dust detection device comprises a shell, a first laser emitter, a photoelectric sensor, a second laser emitter, a photoelectric detector, a spatial filter, a lens and a posture adjusting mechanism; the shell is arranged on the posture adjusting mechanism; an air duct, a dust concentration detection channel and a dust particle size detection channel are respectively arranged in the shell; the air duct is horizontally arranged in the shell, a dust suction fan is arranged at an air inlet of the air duct, and a dust exhaust fan is arranged at an air outlet of the air duct; the dust concentration detection channel is vertically arranged in the shell and is communicated with the air duct in an intersecting way; the first laser emitter is arranged at the top of the dust concentration detection channel, and the photoelectric sensor is arranged at the bottom of the dust concentration detection channel; the dust particle size detection channel is horizontally arranged in the shell and is vertical to the dust concentration detection channel, and the dust particle size detection channel is communicated with the air duct in an intersecting manner; the second laser emitter is installed at one end of the dust particle size detection channel, and the photoelectric detector is installed at the other end of the dust particle size detection channel; the spatial filter is arranged in a dust particle size detection channel between the second laser transmitter and the air duct; the lens is arranged in a dust particle size detection channel between the photoelectric detector and the air duct.
The posture adjusting mechanism comprises a box body, a motor, a driving bevel gear, a driven bevel gear and an electric telescopic rod; the motor is horizontally and fixedly arranged outside the box body, and a motor shaft of the motor extends into the box body; the driving bevel gear is positioned in the box body, and a gear shaft of the driving bevel gear is coaxially connected with a motor shaft of the motor through a coupler; the electric telescopic rod is vertically arranged on a top box plate of the box body, an outer barrel of the electric telescopic rod is connected with the top box plate of the box body through a bearing, and the electric telescopic rod has a rotary degree of freedom relative to the box body; the inner supporting rod of the electric telescopic rod faces upwards and is positioned outside the box body, and the shell is fixedly installed at the top end of the inner supporting rod of the electric telescopic rod; the driven bevel gear is positioned in the box body and coaxially and fixedly sleeved on the outer cylinder body of the electric telescopic rod; the driving bevel gear is meshed with the driven bevel gear.
An alarm is arranged outside the box body, and a warning lamp and a warning whistle are arranged on the alarm.
And an air volume sensor is arranged at the top of the shell.
The invention has the beneficial effects that:
the multifunctional dust detection device can simultaneously meet the detection requirements of dust concentration, dust particle size and ambient air quantity, and data collection is more convenient; the working range and the working angle can be automatically adjusted, and the adaptability of the device to the environment is enhanced; the dust detection alarm device is additionally provided with an alarm function, and when the dust detection data exceeds a safety value, the alarm can be automatically triggered, so that safety guarantee is provided for underground operation personnel.
Drawings
FIG. 1 is a front view (in cross section) of a multi-functional dust detection apparatus of the present invention;
FIG. 2 is a top view (in cross section) of a multi-functional dust detection apparatus of the present invention;
in the figure, 1-shell, 2-first laser emitter, 3-photoelectric sensor, 4-second laser emitter, 5-photoelectric detector, 6-space filter, 7-lens, 8-wind channel, 9-dust concentration detection channel, 10-dust particle size detection channel, 11-dust suction fan, 12-dust exhaust fan, 13-box, 14-motor, 15-driving bevel gear, 16-driven bevel gear, 17-electric telescopic rod, 18-coupler, 19-bearing, 20-alarm, 21-air volume sensor.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 and 2, a multifunctional dust detection device comprises a housing 1, a first laser emitter 2, a photoelectric sensor 3, a second laser emitter 4, a photoelectric detector 5, a spatial filter 6, a lens 7 and a posture adjusting mechanism; the shell 1 is arranged on the posture adjusting mechanism; an air duct 8, a dust concentration detection channel 9 and a dust particle size detection channel 10 are respectively arranged in the shell 1; the air duct 8 is horizontally arranged in the shell 1, a dust suction fan 11 is arranged at an air inlet of the air duct 8, and a dust exhaust fan 12 is arranged at an air outlet of the air duct 8; the dust concentration detection channel 9 is vertically arranged in the shell 1, and the dust concentration detection channel 9 is communicated with the air duct 8 in an intersecting manner; the first laser emitter 2 is arranged at the top of the dust concentration detection channel 9, and the photoelectric sensor 3 is arranged at the bottom of the dust concentration detection channel 9; the dust particle size detection channel 10 is horizontally arranged in the shell 1, the dust particle size detection channel 10 is perpendicular to the dust concentration detection channel 9, and the dust particle size detection channel 10 is communicated with the air duct 8 in an intersecting manner; the second laser emitter 4 is installed at one end of the dust particle size detection channel 10, and the photoelectric detector 5 is installed at the other end of the dust particle size detection channel 10; the spatial filter 6 is arranged in a dust particle size detection channel 10 between the second laser transmitter 4 and the air duct 8; the lens 7 is installed inside the dust particle size detection channel 10 between the photoelectric detector 5 and the air duct 8.
The posture adjusting mechanism comprises a box body 13, a motor 14, a driving bevel gear 15, a driven bevel gear 16 and an electric telescopic rod 17; the motor 14 is horizontally and fixedly arranged outside the box body 13, and a motor shaft of the motor 14 extends to the inside of the box body 13; the driving bevel gear 15 is positioned in the box body 13, and a gear shaft of the driving bevel gear 15 is coaxially connected with a motor shaft of the motor 14 through a coupler 18; the electric telescopic rod 17 is vertically arranged on a top box plate of the box body 13, an outer cylinder body of the electric telescopic rod 17 is connected with the top box plate of the box body 13 through a bearing 19, and the electric telescopic rod 17 has a rotary degree of freedom relative to the box body 13; the inner supporting rod of the electric telescopic rod 17 faces upwards and is positioned outside the box body 13, and the shell 1 is fixedly installed at the top end of the inner supporting rod of the electric telescopic rod 17; the driven bevel gear 16 is positioned in the box body 13, and the driven bevel gear 16 is coaxially and fixedly sleeved on an outer cylinder body of the electric telescopic rod 17; the drive bevel gear 15 is engaged with the driven bevel gear 16.
An alarm 20 is arranged outside the box body 13, and a warning lamp and a warning whistle are arranged on the alarm 20.
An air volume sensor 21 is mounted on the top of the housing 1.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
firstly, the multifunctional dust detection device is arranged at an underground dust detection point, and then the dust suction fan 11 and the dust exhaust fan 12 are synchronously started, so that stable dust-containing airflow is generated in the air duct 8.
When the dust concentration is detected, laser emitted by the first laser emitter 2 passes through dust-containing airflow in the air duct 8 and then reaches the photoelectric sensor 3, and laser signals are processed by the photoelectric sensor 3 to obtain dust concentration data.
When the dust particle size is detected, laser emitted by the second laser emitter 4 sequentially passes through the spatial filter 6, dust-containing airflow in the air duct 8 and the lens 7 and then reaches the photoelectric detector 5, and diffraction light energy signals generated by laser irradiation of dust particles are processed by the photoelectric detector 5 to obtain dust particle size data.
In the process of detecting the dust concentration and the dust particle size, the ambient air volume is directly obtained through the air volume sensor 21 at the top of the shell 1 so as to judge the working conditions.
When dust detection work is required to be carried out at different heights of the dust detection point positions, the electric telescopic rod 17 can be started to control the extension amount of the inner supporting rod, so that the change of the height position of the shell 1 is realized, and the automatic adjustment of the working range is realized.
When dust detection work is required to be carried out at different angles of the dust detection point positions, the motor 14 can be started, the driving bevel gear 15, the driven bevel gear 16 and the electric telescopic rod 17 are sequentially driven to rotate through the motor 14, the shell 1 is further driven to horizontally rotate, and then the change of the angle position of the shell 1 is realized, so that the automatic adjustment of the working angle is realized.
In the dust testing process, if when certain item detected data exceeded the safe value, alarm 20 can be triggered the start at the very first time, sends light through the warning light and warns, sends sound through the siren simultaneously and warns to provide safety guarantee for borehole operation personnel.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.

Claims (4)

1.一种多功能粉尘检测装置，其特征在于：包括壳体、第一激光发射器、光电传感器、第二激光发射器、光电探测器、空间滤波器、透镜及调姿机构；所述壳体设置在调姿机构上；在所述壳体内分别开设有风道、粉尘浓度检测通道及粉尘粒径检测通道；所述风道水平开设在壳体内，在风道的进风口安装有吸尘风扇，在风道的出风口安装有排尘风扇；所述粉尘浓度检测通道竖直开设在壳体内，粉尘浓度检测通道与风道交汇连通；所述第一激光发射器安装在粉尘浓度检测通道的顶部，所述光电传感器安装在粉尘浓度检测通道的底部；所述粉尘粒径检测通道水平开设在壳体内，粉尘粒径检测通道与粉尘浓度检测通道相垂直，粉尘粒径检测通道与风道交汇连通；所述第二激光发射器安装在粉尘粒径检测通道的一端，所述光电探测器安装在粉尘粒径检测通道的另一端；所述空间滤波器安装在第二激光发射器与风道之间的粉尘粒径检测通道内部；所述透镜安装在光电探测器与风道之间的粉尘粒径检测通道内部。1. A multifunctional dust detection device is characterized in that: comprising a casing, a first laser transmitter, a photoelectric sensor, a second laser transmitter, a photodetector, a spatial filter, a lens and an attitude adjustment mechanism; the casing The body is arranged on the attitude adjustment mechanism; an air duct, a dust concentration detection channel and a dust particle size detection channel are respectively opened in the casing; the air duct is horizontally opened in the casing, and a dust collector is installed at the air inlet of the air duct A fan, a dust exhaust fan is installed at the air outlet of the air duct; the dust concentration detection channel is vertically opened in the casing, and the dust concentration detection channel intersects and communicates with the air duct; the first laser transmitter is installed in the dust concentration detection channel The photoelectric sensor is installed at the bottom of the dust concentration detection channel; the dust particle diameter detection channel is horizontally opened in the casing, the dust particle diameter detection channel is perpendicular to the dust concentration detection channel, and the dust particle diameter detection channel is connected to the air duct. The second laser transmitter is installed at one end of the dust particle size detection channel, and the photodetector is installed at the other end of the dust particle size detection channel; the spatial filter is installed between the second laser transmitter and the wind Inside the dust particle size detection channel between the ducts; the lens is installed inside the dust particle size detection channel between the photodetector and the air duct. 2.根据权利要求1所述的一种多功能粉尘检测装置，其特征在于：所述调姿机构包括箱体、电动机、主动锥齿轮、从动锥齿轮及电动伸缩杆；所述电动机水平固装在箱体外部，电动机的电机轴延伸至箱体内部；所述主动锥齿轮位于箱体内部，主动锥齿轮的齿轮轴与电动机的电机轴通过联轴器同轴连接；所述电动伸缩杆竖直安装在箱体的顶部箱板上，电动伸缩杆的外筒体通过轴承与箱体的顶部箱板相连，电动伸缩杆相对于箱体具有回转自由度；所述电动伸缩杆的内支撑杆朝上且位于箱体外部，所述壳体固定安装在电动伸缩杆的内支撑杆顶端；所述从动锥齿轮位于箱体内部，从动锥齿轮同轴固定套装在电动伸缩杆的外筒体上；所述主动锥齿轮与从动锥齿轮相啮合。2 . The multifunctional dust detection device according to claim 1 , wherein the attitude adjustment mechanism comprises a box body, a motor, a driving bevel gear, a driven bevel gear and an electric telescopic rod; the motor is horizontally fixed. 3 . It is installed outside the box, and the motor shaft of the motor extends to the inside of the box; the driving bevel gear is located inside the box, and the gear shaft of the driving bevel gear and the motor shaft of the motor are coaxially connected through a coupling; the electric telescopic rod It is vertically installed on the top box plate of the box body, the outer cylinder of the electric telescopic rod is connected with the top box plate of the box body through a bearing, and the electric telescopic rod has a degree of rotational freedom relative to the box body; the inner support of the electric telescopic rod The rod is upward and is located outside the box body, the casing is fixedly installed on the top of the inner support rod of the electric telescopic rod; the driven bevel gear is located inside the box body, and the driven bevel gear is coaxially fixed outside the electric telescopic rod on the cylinder body; the driving bevel gear meshes with the driven bevel gear. 3.根据权利要求2所述的一种多功能粉尘检测装置，其特征在于：在所述箱体外部安装有报警器，报警器上设置有警示灯和警笛。3 . The multifunctional dust detection device according to claim 2 , wherein an alarm is installed outside the box, and a warning light and a siren are arranged on the alarm. 4 . 4.根据权利要求1所述的一种多功能粉尘检测装置，其特征在于：在所述壳体顶部安装有风量传感器。4 . The multifunctional dust detection device according to claim 1 , wherein an air volume sensor is installed on the top of the casing. 5 .
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114894684A (en) * 2022-04-06 2022-08-12 江苏吉华电子科技有限公司 A high-precision dust concentration detector with automatic compensation

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1385034A1 (en) * 1986-03-28 1988-03-30 Институт высоких температур АН СССР Device for measuring sizes and account concentration of disperse particles
EP1972925A1 (en) * 2005-12-28 2008-09-24 Toyota Jidosha Kabushiki Kaisha Exhaust gas analyzing device and exhaust gas analyzing method
CN101509931A (en) * 2009-03-16 2009-08-19 浙江大学 Method and apparatus for on-line measuring two-dimension speed and particle size distribution of granules in pipe
CN202460877U (en) * 2012-01-19 2012-10-03 辽宁工程技术大学 Coal mine underground high-pressure single-phase flow dust removal nozzle
WO2013177952A1 (en) * 2012-05-31 2013-12-05 中铝国际工程股份有限公司 Large downstream tank type incinerator
CN103604731A (en) * 2013-11-25 2014-02-26 中煤科工集团重庆研究院有限公司 Anti-pollution dust detection mechanism
CN103837451A (en) * 2014-02-28 2014-06-04 苏州亿利安机电科技有限公司 Dust sensor for on-line monitoring of dust concentration
US20140262730A1 (en) * 2013-03-15 2014-09-18 Caloris Engineering, LLC Mobile mechanical vapor recompression evaporator
CN206557993U (en) * 2017-01-16 2017-10-13 贵州省交通科学研究院股份有限公司 A kind of temporary traffic indicator lamp with atmospheric cleaning function
CN210688385U (en) * 2019-09-25 2020-06-05 佛山市顺德区美的洗涤电器制造有限公司 Kitchen appliance
CN112033725A (en) * 2020-08-20 2020-12-04 江苏鸿渐投资咨询管理有限公司 Portable soil detects uses collection system
CN112245217A (en) * 2020-10-23 2021-01-22 陈飞 Medical vestibule rehabilitation therapeutic apparatus
CN113039427A (en) * 2018-11-19 2021-06-25 三星电子株式会社 Multi-mode dust sensor

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1385034A1 (en) * 1986-03-28 1988-03-30 Институт высоких температур АН СССР Device for measuring sizes and account concentration of disperse particles
EP1972925A1 (en) * 2005-12-28 2008-09-24 Toyota Jidosha Kabushiki Kaisha Exhaust gas analyzing device and exhaust gas analyzing method
CN101509931A (en) * 2009-03-16 2009-08-19 浙江大学 Method and apparatus for on-line measuring two-dimension speed and particle size distribution of granules in pipe
CN202460877U (en) * 2012-01-19 2012-10-03 辽宁工程技术大学 Coal mine underground high-pressure single-phase flow dust removal nozzle
WO2013177952A1 (en) * 2012-05-31 2013-12-05 中铝国际工程股份有限公司 Large downstream tank type incinerator
US20140262730A1 (en) * 2013-03-15 2014-09-18 Caloris Engineering, LLC Mobile mechanical vapor recompression evaporator
CN103604731A (en) * 2013-11-25 2014-02-26 中煤科工集团重庆研究院有限公司 Anti-pollution dust detection mechanism
CN103837451A (en) * 2014-02-28 2014-06-04 苏州亿利安机电科技有限公司 Dust sensor for on-line monitoring of dust concentration
CN206557993U (en) * 2017-01-16 2017-10-13 贵州省交通科学研究院股份有限公司 A kind of temporary traffic indicator lamp with atmospheric cleaning function
CN113039427A (en) * 2018-11-19 2021-06-25 三星电子株式会社 Multi-mode dust sensor
CN210688385U (en) * 2019-09-25 2020-06-05 佛山市顺德区美的洗涤电器制造有限公司 Kitchen appliance
CN112033725A (en) * 2020-08-20 2020-12-04 江苏鸿渐投资咨询管理有限公司 Portable soil detects uses collection system
CN112245217A (en) * 2020-10-23 2021-01-22 陈飞 Medical vestibule rehabilitation therapeutic apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114894684A (en) * 2022-04-06 2022-08-12 江苏吉华电子科技有限公司 A high-precision dust concentration detector with automatic compensation
CN114894684B (en) * 2022-04-06 2025-03-21 江苏吉华电子科技有限公司 A high-precision dust concentration detector with automatic compensation function

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