CN106680167B - Dust detector performance testing device - Google Patents
Dust detector performance testing device Download PDFInfo
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- CN106680167B CN106680167B CN201710089207.4A CN201710089207A CN106680167B CN 106680167 B CN106680167 B CN 106680167B CN 201710089207 A CN201710089207 A CN 201710089207A CN 106680167 B CN106680167 B CN 106680167B
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- 239000000428 dust Substances 0.000 title claims abstract description 254
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000007790 scraping Methods 0.000 claims description 5
- 239000003570 air Substances 0.000 description 11
- 239000012080 ambient air Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical group [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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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- 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)
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Abstract
The invention discloses a dust detector performance testing device, which is used for testing the detection performance of a dust detector and comprises a dust feeding mechanism, a dust feeding mechanism and a wind tunnel mechanism; the dust feeding mechanism comprises a base, a dust feeding disc which is arranged on the base and rotates around the axis of the dust feeding mechanism and is used for receiving dust input by the dust feeding mechanism, and an ejector which is arranged on the base and is used for sucking the dust on the dust feeding disc and feeding the dust into the wind tunnel mechanism, the dust feeding mechanism comprises a support frame, a dust feeding pipe which is arranged on the support frame and is used for conveying the dust, a dust feeding hopper which is arranged on the dust feeding pipe and is communicated with the dust feeding pipe and is used for adding the dust, a dust feeding screw rod which is arranged in an interpolation manner around the axis of the dust feeding hopper and rotates in the direction of the axis of the dust feeding hopper, and the wind tunnel mechanism comprises a tunnel body and a centrifugal fan which is arranged on the tunnel body and is used for providing wind energy. The invention has simple structure and convenient operation, and truly simulates the dust environment through the cooperation of the dust feeding mechanism, the dust feeding mechanism and the wind tunnel mechanism, and can accurately test the performance of the dust detector.
Description
Technical Field
The invention relates to a performance testing device, in particular to a dust detector performance testing device.
Background
Dust is solid particles suspended in air, and is a natural enemy of human health in life and work, and is a main cause of inducing various diseases. In some heavily polluted industries such as mines, metallurgy, power plants and the like, the dust concentration is particularly high, and the health of workers is greatly threatened, so that dust detectors for detecting the dust concentration in the ambient air are widely used.
However, whether the dust detector can accurately detect the dust concentration in the detected area cannot be determined, the performance of the dust detector cannot be ensured, and difficulty is brought to dust control.
Disclosure of Invention
The invention aims to provide a dust detector performance testing device which is used for testing the performance of a dust detector before being put into use.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the dust detector performance testing device is used for testing the detection performance of a dust detector and comprises a dust conveying mechanism, a dust feeding mechanism and a wind tunnel mechanism;
the dust feeding mechanism comprises a base, a dust feeding disc which is arranged on the base and rotates around the axis of the base and used for receiving dust input by the dust feeding mechanism, and an ejector which is arranged on the base and used for sucking the dust on the dust feeding disc and feeding the dust into the wind tunnel mechanism.
Preferably, the dust feeding disc is provided with a ring-shaped dust feeding groove, and the dust outlet end of the dust feeding mechanism and the dust inlet end of the ejector are both positioned above the dust feeding groove.
More preferably, the ejector is provided with a dust suction pipe for sucking dust on the dust feeding tray, and the dust suction pipe is suspended above the dust feeding groove.
More preferably, a dust feeding scraper which rotates around the axis of the dust feeding tray and is used for scraping dust on the dust feeding tray into the dust feeding groove is suspended above the dust feeding tray.
Still more preferably, the lower end surface of the dust-feeding scraper is attached to the upper surface of the dust-feeding tray.
Preferably, a baffle plate is arranged between the dust outlet end of the dust conveying mechanism and the ejector, and the baffle plate is propped against the dust feeding disc.
Preferably, the dust conveying mechanism comprises a supporting frame, a dust conveying pipe arranged on the supporting frame and used for conveying dust, and a dust conveying bucket arranged on the dust conveying pipe and communicated with the dust conveying pipe and used for adding dust, and a dust conveying screw rod which rotates around the axial lead direction of the dust conveying screw rod is inserted into the dust conveying pipe.
Preferably, the wind tunnel mechanism comprises a tunnel body and a centrifugal fan arranged on the tunnel body and used for providing wind energy.
More preferably, the inner wall ring of the hole is abutted with a rectifying plate with a plurality of through holes uniformly distributed on the surface and used for flattening dust airflow.
More preferably, the air inlet end in the cavity is provided with a scattering component for scattering the input dust.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the dust detector performance testing device is simple in structure and convenient to operate, and the dust environment is truly simulated through the cooperation of the dust feeding mechanism, the dust feeding mechanism and the wind tunnel mechanism, so that the performance of the dust detector can be accurately tested.
Drawings
FIG. 1 is a schematic view of the dust feed mechanism of the present invention;
FIG. 2 is a schematic diagram of the dust-feeding mechanism of the present invention;
FIG. 3 is a schematic view of the wind tunnel mechanism of the present invention.
Wherein: 1. a base; 2. a dust supply tray; 3. an ejector; 4. a dust supply tank; 5. a dust collection pipe; 6. a dust-feeding scraper; 7. a baffle plate; 8. a support frame; 9. a dust-feeding pipe; 10. a dust hopper; 11. a dust-feeding screw; 12. a hole body; 13. a centrifugal fan; 14. a rectifying plate; 15. a break-up assembly; 16. a sliding sheet; 17. a window; 18. a console; 19. a dust remover.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1-3, a dust detector performance testing device is used for testing the detection performance of a dust detector, and comprises a dust feeding mechanism, a dust feeding mechanism and a wind tunnel mechanism;
the dust feeding mechanism comprises a base 1, a dust feeding disc 2 which is arranged on the base 1 and rotates around the axis of the base and is used for receiving dust input by the dust feeding mechanism, and an ejector 3 which is arranged on the base 1 and is used for sucking the dust on the dust feeding disc 2 and sending the dust into the wind tunnel mechanism. The dust feeding disc 2 rotates by the energy provided by the motor, the dust is slowly conveyed to the lower part of the ejector 3, and the ejector 3 sucks the dust.
In this embodiment, the ejector 3 is connected with an air pump, an air purifier and a pressure regulator, and compressed air generated by the operation of the air pump enters the ejector 3 through a pipeline, so that the ejector 3 can generate suction to adsorb dust. The air purifier and the pressure regulator are arranged between the air pressure pump and the ejector 3, and the arrangement of the air purifier ensures that the air entering the wind tunnel mechanism does not contain impurities, and ensures the accuracy of the test.
A sliding sheet 16 for reducing friction is clamped between the dust feeding disc 2 and the base 1, the sliding sheet 16 is a tetrafluoro sliding sheet, tetrafluoro is a polymer of tetrafluoroethylene, the friction coefficient is extremely low, and the polytetrafluoroethylene has non-viscosity due to extremely low force between fluorine-carbon chain molecules. Therefore, the slide sheet 16 made of the tetrafluoro material can well reduce the resistance of the dust-feeding plate 2 during operation.
The dust feeding disc 2 is provided with a ring-shaped dust feeding groove 4, and the dust outlet end of the dust feeding mechanism and the dust inlet end of the ejector are positioned above the dust feeding groove 4. The ejector 3 is provided with a dust suction pipe 5 for sucking dust on the dust feeding tray 2, and the dust suction pipe 5 is suspended above the dust feeding groove 4.
In this embodiment, there are two dust feed tanks 4, and two corresponding dust suction pipes 5 are suspended above the two dust feed tanks 4, respectively, for sucking dust in the dust feed tanks 4.
Above the dust feeding tray 2, a dust feeding scraper 6 which rotates around the axis of the dust feeding tray 2 and is used for scraping dust on the dust feeding tray 2 into the dust feeding groove 4 is suspended. The lower end surface of the dust feeding scraper 6 is attached to the upper surface of the dust feeding disc 2. A baffle plate 7 is arranged between the dust outlet end of the dust feeding mechanism and the ejector 3, and the baffle plate 7 is propped against the dust feeding disc 2.
The axis department has set firmly a axis of rotation on giving the dirt scraper blade 6, and this axis of rotation drives giving dirt scraper blade 6 rotation under motor drive, can ensure to scrape into giving dirt groove 4 with the dust of sending the input in the dirt mechanism, and evenly distributed, because the particle diameter ratio of dust is less, consequently need give dirt scraper blade 6 laminating and give dirt dish 2, just can accomplish better scraping the dust, slightly has certain pressure for dirt scraper blade 6 simultaneously, can be better scrape into giving dirt groove 4 with the dust. The existence of the baffle plate 7 can block the redundant dust input by the dust feeding mechanism on one side of the baffle plate, only the dust in the dust feeding groove 4 is allowed to pass through the baffle plate 7, so that the dust fed into the wind tunnel mechanism is ensured to be invariable all the time, and the baffle plate 7 is fixedly arranged on the base 1 and does not rotate along with the dust feeding disc 2.
The dust conveying mechanism comprises a supporting frame 8, a dust conveying pipe 9 arranged on the supporting frame 8 and used for conveying dust, a dust conveying bucket 10 arranged on the dust conveying pipe 9 and communicated with the dust conveying pipe 9 and used for adding dust, and a dust conveying screw 11 which rotates around the axial lead direction of the dust conveying screw 11 is inserted into the dust conveying pipe 9 and is arranged in the horizontal direction.
In the embodiment, the dust hopper 10 is communicated with the upper surface of the dust conveying pipe 9 in an inverted trapezoid shape, and dust enters the dust conveying mechanism from an upper inlet of the dust hopper 10 during operation. The dust conveying pipe 9 is internally of a hollow structure, a dust conveying screw 11 is inserted, and dust is attached to a thread gap of the dust conveying screw 11 and conveyed forwards along with the rotation of the screw. The rotation of the dust feed screw 11 is powered by means of a motor.
The wind tunnel mechanism comprises a tunnel body 12 and a centrifugal fan 13 arranged on the tunnel body 12 and used for providing wind energy. The cavity 12 cannot be set too short to ensure that there is enough path for the dust to settle.
The inner wall of the cavity 12 is annularly abutted with a rectifying plate 14 with a plurality of through holes uniformly distributed on the surface and used for flattening dust airflow. The air inlet end in the hole body 12 is provided with a scattering component 15 for scattering the input dust. The scattering component 15 comprises a supporting rod fixed at the end of the input pipeline of the ejector 3 and a baffle plate arranged on the supporting rod. The arrangement of the scattering component 15 ensures that compact dust input from a pipeline is evenly scattered, so that the test is more accurate.
The hole body 12 is provided with a plurality of windows 17 for placing a dust detector to be detected and observing. In operation, the window 17 is closed completely to prevent dust from escaping, for example, from the ambient air.
The wind tunnel mechanism is also provided with a console 18 for controlling the operation of the mechanism. The dust remover 19 is connected to the outlet of the hole body 12 of the wind tunnel mechanism, and when the work is finished, the dust for testing enters the dust remover 19 for removal, so that the pollution to the external environment is reduced.
The working procedure of this embodiment is specifically described below: when the work starts, the dust detector to be tested is put into the wind tunnel body 12 of the wind tunnel mechanism from the window 17. Then put into the dust hopper 10 with the dust, the dust falls into the dust pipe 9 by the dust hopper 10, adheres to in the screw thread of the dust feed screw 11, along with the rotation of the dust feed screw 11 gets into the dust feeding mechanism, simultaneously the dust feed scraper 6 rotates, evenly drives the dust into the dust feed tank 4, at this moment the dust feed tray 2 rotates simultaneously, carries the dust to the ejector 3, and the dust sucked by the ejector 3 remains unchanged all the time through the blocking of the blocking plate 7. The ejector 3 sends the sucked dust into the cavity 12, the dust which is flattened by the rectifying plate 14 and uniformly scattered advances by the driving of wind generated by the operation of the centrifugal fan 13, and the detection performance of the dust detector is observed when the dust passes through the dust detector. Finally, the dust is sent to a dust catcher 19 for disposal.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a dust detector capability test device for test dust detector's detection performance, its characterized in that: the dust detector performance testing device comprises a dust feeding mechanism, a dust feeding mechanism and a wind tunnel mechanism;
the dust feeding mechanism comprises a base (1), a dust feeding disc (2) which is arranged on the base (1) and rotates around the axis of the base and is used for receiving dust input by the dust feeding mechanism, and an ejector (3) which is arranged on the base (1) and is used for sucking the dust on the dust feeding disc (2) and feeding the dust into the wind tunnel mechanism;
the dust feeding disc (2) is provided with a ring-shaped dust feeding groove (4), and the dust outlet end of the dust feeding mechanism and the dust inlet end of the ejector (3) are both positioned above the dust feeding groove (4);
a dust feeding scraping plate (6) which rotates around the axis of the dust feeding plate (2) and is used for scraping dust on the dust feeding plate (2) into the dust feeding groove (4) is suspended above the dust feeding plate (2);
a baffle plate (7) is arranged between the dust outlet end of the dust conveying mechanism and the ejector (3), and the baffle plate (7) is propped against the dust feeding disc (2);
the existence of the baffle plate (7) can block the redundant dust input by the dust conveying mechanism at one side of the baffle plate, only the dust in the dust feeding groove (4) is allowed to pass through the baffle plate (7), and the dust conveyed into the wind tunnel mechanism is ensured to be kept unchanged all the time.
2. The dust detector performance testing apparatus according to any one of claim 1, wherein: the ejector (3) is provided with a dust suction pipe (5) for sucking dust on the dust feeding disc (2), and the dust suction pipe (5) is suspended above the dust feeding groove (4).
3. The dust detector performance testing apparatus of claim 1, wherein: the lower end surface of the dust feeding scraper (6) is attached to the upper surface of the dust feeding disc (2).
4. The dust detector performance testing apparatus of claim 1, wherein: the dust conveying mechanism comprises a supporting frame (8), a dust conveying pipe (9) arranged on the supporting frame (8) and used for conveying dust, a dust conveying hopper (10) arranged on the dust conveying pipe (9) and communicated with the dust conveying pipe (9) and used for adding dust, and a dust conveying screw (11) rotating around the axial lead direction of the dust conveying pipe (9) is inserted in the dust conveying pipe.
5. The dust detector performance testing apparatus of claim 1, wherein: the wind tunnel mechanism comprises a tunnel body (12) and a centrifugal fan (13) which is arranged on the tunnel body (12) and is used for providing wind energy.
6. The dust detector performance testing apparatus of claim 5, wherein: the inner wall of the cavity body (12) is annularly abutted against a rectifying plate (14) with a plurality of through holes uniformly distributed on the surface and used for leveling dust airflow.
7. The dust detector performance testing apparatus of claim 5, wherein: the air inlet end in the cavity body (12) is provided with a scattering component (15) for scattering input dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089207.4A CN106680167B (en) | 2017-02-20 | 2017-02-20 | Dust detector performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089207.4A CN106680167B (en) | 2017-02-20 | 2017-02-20 | Dust detector performance testing device |
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| Publication Number | Publication Date |
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| CN106680167A CN106680167A (en) | 2017-05-17 |
| CN106680167B true CN106680167B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710089207.4A Active CN106680167B (en) | 2017-02-20 | 2017-02-20 | Dust detector performance testing device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349938A (en) * | 2013-07-23 | 2013-10-16 | 天津开发区合普工贸有限公司 | Precise and quantitative-control dust gasification device with airflow-driven tunnel at bottoms of micro nests |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2628528B2 (en) * | 1988-01-08 | 1997-07-09 | 株式会社ダスキン | Dust concentration detection device and air purifier equipped therewith |
| CN101504327B (en) * | 2009-03-11 | 2011-01-05 | 江苏三恒科技集团有限公司 | Wind tunnel test system of dust sensor |
| CN201378137Y (en) * | 2009-03-11 | 2010-01-06 | 江苏三恒科技集团有限公司 | Testing wind tunnel of dust sensor |
| CN202383046U (en) * | 2011-12-06 | 2012-08-15 | 青岛海纳光电环保有限公司 | Wind tunnel type smoke dust concentration generation calibrating device |
| CN202729239U (en) * | 2012-08-22 | 2013-02-13 | 郑州光力科技股份有限公司 | Quantitative dust feeding device |
| CN102830047A (en) * | 2012-08-28 | 2012-12-19 | 中煤科工集团重庆研究院 | Circulating dust generating device |
| CN103234573B (en) * | 2013-04-22 | 2015-03-18 | 张家港朗亿机电设备有限公司 | Dust environment simulation equipment |
| CN103604733B (en) * | 2013-12-02 | 2015-09-16 | 张家港朗亿机电设备有限公司 | The method of dust atmosphere analogue means and demarcation dust concentration tester thereof |
| CN106404627A (en) * | 2016-11-08 | 2017-02-15 | 张家港朗亿机电设备有限公司 | Dust environment simulating device |
| CN206497008U (en) * | 2017-02-20 | 2017-09-15 | 常熟市顺欣仪器仪表有限公司 | A kind of dust detector performance testing device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349938A (en) * | 2013-07-23 | 2013-10-16 | 天津开发区合普工贸有限公司 | Precise and quantitative-control dust gasification device with airflow-driven tunnel at bottoms of micro nests |
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