CN104251809B - Minute solid particles aerosol high accuracy steady caliberating device - Google Patents
Minute solid particles aerosol high accuracy steady caliberating device Download PDFInfo
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- CN104251809B CN104251809B CN201410470124.6A CN201410470124A CN104251809B CN 104251809 B CN104251809 B CN 104251809B CN 201410470124 A CN201410470124 A CN 201410470124A CN 104251809 B CN104251809 B CN 104251809B
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Abstract
The present invention provides a kind of minute solid particles aerosol high accuracy steady caliberating device, the solid particulate matter aerosol that the particulate matter ration atomizer that computer control controls produces enters mixed cabin, obtain the blended outlet of minute solid particles aerosol through the screening of oversized particles screen cloth and enter balance cabin, the electric temp control device in balance cabin, stir evenly fan, minute solid particles aerosol is carried out temperature control stirring and dilution by diluent nozzle and balance gas outlet, spherical demarcation cabin is entered by exporting road junction, demarcate cabin horizontal line position, middle part have several demarcation interface have access to associated calibration instrument realize detection and calibrating function, the calibrational capacity controller demarcating cabin connection accurately adjusts the aerocolloidal steady flow of the minute solid particles in cabin and concentration, expellant gas is aspirated safety dumping by negative pressure pump by exhaust gas treatment device after particulate filter inner filtration.The invention has the beneficial effects as follows: the aerocolloidal high accuracy steady of minute solid particles can be carried out and demarcate the specific demand meeting the fields such as environmental science, military medicine, suction toxicity, material science.
Description
Technical field
The present invention relates to a kind of minute solid particles aerosol high accuracy steady caliberating device.
Background technology
Current in environmental science, military medicine, suck toxicity, not only the fields such as material science need to utilize one can produce high-precision minute solid particles aerosol but also it can be carried out steady test in a hurry, demarcate, assessment, the experimental provision of the scientific researches such as inspection, this experimental provision be usually can be produced high-precision minute solid particles aerosol generating equipment by one and one its device carrying out steady demarcation can be formed, general solid particulate aerosol generation equipment mostly adopts air-flow blow-through sample to produce solid particulate aerosol, concentration is uncontrollable, the particle diameter of the solid particle produced also is all not of uniform size, and sample is required harshness, must be that non-sticky powder or dust otherwise cannot test generation solid particulate aerosol etc., also it is take after sampling with the demarcation of other testing equipments the demarcation of solid particulate aerosol, pilot process is complicated and is disturbed by outside contamination, the low data of precision are inaccurate, do not reach the requirement of contemporary scientific research, thus constraining the development of related science research.Therefore the dust atomization that the powder of any character or dust both can be carried out accurate concentration control by research and development one produce minute solid particles aerosol and can to its carry out the experimental provision that high accuracy steady demarcates become current in the urgent need to.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide a kind of minute solid particles aerosol high accuracy steady caliberating device, high-precision minute solid particles aerosol can be produced and it can be carried out the scientific researches such as high accuracy steady test, demarcation, assessment, inspection again, meet the specific demand of the field scientific researches such as environmental science, military medicine, suction toxicity, material science.
For achieving the above object, a kind of minute solid particles aerosol high accuracy steady caliberating device of offer is provided, the quantitative concentrations solid particulate matter aerosol that the particulate matter ration atomizer controlled by computer control produces enters mixed cabin, through the minute solid particles aerosol that the screening of oversized particles screen cloth is uniformly mixed, balance cabin is entered then through mixed export, the electric temp control device in balance cabin, stir evenly fan, minute solid particles aerosol is carried out temperature control stirring and is diluted to required concentration and flow by diluent nozzle and balance gas outlet, spherical demarcation cabin is entered by exporting road junction, demarcate cabin horizontal line position, middle part have several demarcation interface have access to associated calibration instrument realize detection and calibrating function, the calibrational capacity controller demarcating cabin connection accurately adjusts the aerocolloidal steady flow of minute solid particles demarcated in cabin and concentration, exhaust gas treatment device aspirates safety dumping by negative pressure pump after expellant gas is drawn into particulate filter inner filtration.
The invention has the beneficial effects as follows: invented a kind of dust atomization that not only powder of any character or dust can have been carried out accurate concentration control and produced high-precision minute solid particles aerosol but also it can be carried out the experimental provision of the scientific researches such as steady test, demarcation, assessment, inspection, can accurately adjust the aerocolloidal steady flow of minute solid particles and concentration demarcated in cabin, directly in demarcation cabin, carry out test calibration, process is simply noiseless, data are accurate, it is possible to meet the specific demand in the fields such as environmental science, military medicine, suction toxicity, material science.
Accompanying drawing explanation
Accompanying drawing is the schematic diagram of present configuration.
In figure:
1, computer control 2, calibrate QI KOU 3, High Accuracy Solid granule density detector 4, associated calibration instrument
5, flow controller 6, device for drying and filtering 7, pressure steel cylinder 8, high-purity inertia source of the gas 9, temperature control pipeline
10, electric temp control device 11, dilution nozzle 12, output road junction 13, interior demarcation seal lid 14, Circular Pipe
15, outer demarcation seals lid 16, demarcation interface 17, trace negative pressure pump 18, calibrational capacity controller
19, pipe 20, particulate filter 21, exhaust gas treatment device 22, negative pressure pump 23, urceolus are taken out without pressure
24, inner core 25, balanced-out QI KOU 26, stir evenly fan 27, bulky grain screen cloth 28, slappe
29, motor 30, particulate matter ration atomizer 31, data wire 32, collecting tank 33, mixed cabin are bounced
34, spraynozzle 35, mixed export 36, balance cabin 37, demarcate cabin.
Detailed description of the invention
In conjunction with drawings and Examples, the present invention is illustrated.
As shown in drawings, the present invention provides a kind of minute solid particles aerosol high accuracy steady caliberating device, it is by mixed cabin 33, balance cabin 36 and demarcation cabin 37 form, mixed cabin 33 is the seal hatch of the smooth cleaning easy to clean of the inner surface made by resistant material, overall cylindrical, the upper and lower of mixed cabin 33 is cone shape structure, the lower sidewalls of seal hatch has osculum and is directed inwardly into spout atomizer 34 upwards, the certain density minute solid particles condensation aerosol that particulate matter ration atomizer 30 is formed is entered in mixed cabin 33 by atomizer 34 and diffuses up, in mixed cabin 33, the bulky grain screen cloth 27 that an edge seal is fixing is installed in middle and upper part, equipped with bouncing motor 29 and slappe 28 in the middle of bulky grain screen cloth 27, bulky grain screen cloth 27 can be bounced according to different frequency, larger particles under being screened by bulky grain screen cloth 27 shakes off, the conical base of the bottom of mixed cabin 33 has an osculum and is connected to collecting tank 32, collect at any time and hold the bulky grain solid particulate matter settled down, the upper cone top of mixed cabin 33 has a mixed export 35 and is connected with balance cabin 36；Balance cabin 36 is the seal hatch of the smooth cleaning easy to clean of the inner surface made by resistant material, global design is columnar structured, the cylinder sidewall of a week and top are equipped with electric temp control device 10, bottom balance cabin 36, eccentric side has mixed export 35 to connect mixed cabin 33, in balance cabin 36 with mixed export 35 just to top sidewall on vertical stir evenly fan 26 equipped with one, stir evenly above fan 26 equipped with balanced-out QI KOU 25, balance top, cabin 36 opposite side has output road junction 12 and connects with demarcating cabin 37, it is positioned at output road junction 12 below equipped with High Accuracy Solid granule density detector 3, at High Accuracy Solid granule density detector 3 below equipped with diluent nozzle 11；Demarcate the seal hatch that cabin 37 is the smooth cleaning easy to clean of inner surface made by insulation resistant material, global design is the spheroidal structure with normal volume, the bottommost opening in whole spherical demarcation cabin 37 and balance cabin 36 are tightly connected by exporting road junction 12, top in whole spherical demarcation cabin 37 has and calibrates QI KOU 2 and flow controller 5 is tightly connected, enclose at the middle part one in whole spherical demarcation cabin 37 horizontal line position have multiple demarcation interface 16 be respectively connected to High Accuracy Solid granule density detector 3 or the aerocolloidal associated calibration instrument 4 of minute solid particles for realize detection and calibrating function；Demarcate the Circular Pipe 14 that interface 16 is the inner hollow made by hard resistant material, Circular Pipe 14 mid portion is sealably coupled to the middle part one in spherical demarcation cabin 37 and encloses on multiple circular holes that horizontal line position has, the Circular Pipe 14 part outside spherical demarcation cabin 37 seals lid 15 equipped with outer demarcation, High Accuracy Solid granule density detector 3 or the aerocolloidal associated calibration instrument 4 of minute solid particles can be tightly connected for realizing detection and calibrating function when opening, Circular Pipe 14 seals lid 13 in the part within spherical demarcation cabin 37 equipped with interior demarcation, it can close when connecting High Accuracy Solid granule density detector 3 or minute solid particles aerocolloidal associated calibration instrument 4 to ensure to demarcate cabin 37 homeostasis and sealing；High-purity inertia source of the gas 8 is made up of pressure steel cylinder 7 and device for drying and filtering 6, the noble gas that high-purity inertia source of the gas 8 provides is divided into two tunnels by temperature control pipeline 9 and flow controller 5 and is supplied respectively to the diluent nozzle 11 of particulate matter ration atomizer 30 and balance bottom, cabin 36 and carries out being atomized and diluting, the flow controller 5 by accurate flow control and temperature control pipeline 9 is added owing to the noble gas of high-purity inertia source of the gas 8 offer has stable physicochemical property, therefore, it is possible to it is constant with the noble gas dimension criteria that the diluent nozzle 11 of balance bottom, cabin 36 carries out being atomized and diluting to ensure to be input to particulate matter ration atomizer 30；High-purity inertia source of the gas 8 supplies quantitative steady noble gas to particulate matter ration atomizer 30, the solid particulate aerosol producing quantitative concentrations enters into mixed cabin 33 by atomizer 34, the minute solid particles aerosol being uniformly mixed after the screening of the bulky grain screen cloth 27 on mixed cabin 33 top, it is sent directly into balance cabin 36 via the mixed export 35 of conical top directly over mixed cabin 33, built with electric temp control device 10, balance cabin 36 ensure that balance cabin 36 maintains the environment of a constant temperature all the time, stir evenly fan 26, the minute solid particles aerosol that mixing cabin 33 is sent into is carried out temperature control stirring and uniformly and is diluted to required concentration and flow by diluent nozzle 11 and balance gas outlet 25, spherical demarcation cabin 37 is entered by balancing the output road junction 12 on top, cabin 36, the High Accuracy Solid granule density detector 3 demarcating interface 16 access on spherical demarcation cabin 37 or associated calibration instrument 4 is used to carry out detecting and demarcating, the parts that calibrational capacity controller 18 is made up of trace negative pressure pump 17 and flow controller 5, what trace negative pressure pump 17 input was connected in series that a flow controller 5 is connected to top, spherical demarcation cabin 37 calibrates QI KOU 2, the outfan of trace negative pressure pump 17 is connected to one of them in exhaust gas treatment device 21 and takes out the input of pipe 19 without pressure, experimental calibration request trace negative pressure pump 17 and flow controller 5 synergy can control to adjust the marked gas flow demarcated in cabin 37；The experimental needs of calibrational capacity controller 18 of top, spherical demarcation cabin 37 connection accurately adjust the aerocolloidal flow of minute solid particles demarcated in cabin 37 and concentration, exhaust gas treatment device 21 is to be taken out pipe 19 by two nothing pressures arranged side by side, the parts that particulate filter 20 and negative pressure pump 22 combine, wherein take out, without pressure, the airflow pipeline that pipe 19 is an inside and outside double-barrel structure, urceolus one end open is as the entrance taking out pipe 19 diluent gas without pressure, the other end is sealably coupled to negative pressure pump 22 as the outfan taking out pipe 19 without pressure, inner core 24 is fixed on the axis that urceolus 23 is concentric, it is internal that one end is deeply communicated to urceolus 23, the other end attenuates and extends urceolus 23 as the input taking out pipe 19 without pressure, two nothings arranged side by side press the input one taking out pipe 19 to be connected to trace negative pressure pump 17 outfan, another is connected to balanced-out QI KOU 25, two nothings arranged side by side press the outfan taking out pipe 19 to be connected to negative pressure pump 22 after being pooled to a particulate filter 20, the plug bush structure that gos deep into taking out pipe 19 without pressure ensure that in exhaust pipe both without any pressure disturbances balance cabin 36 and demarcation cabin 37, again can in time by balanced-out QI KOU 25 with calibrate QI KOU 2 expellant gas and be drawn into particulate filter 20 inner filtration completely, then pass through the suction safety dumping of negative pressure pump 22；Computer control 1 is controlled flow controller 5, particulate matter ration atomizer 30 by data wire 31, is balanced the electric temp control device 10 in cabin 36 and stir evenly fan 26, High Accuracy Solid granule density detector 3, associated calibration instrument 4 and negative pressure pump 22.
Embodiment:
When using the dust atomization that the powder of any character or dust are carried out accurate concentration control by a kind of minute solid particles aerosol high accuracy steady caliberating device produce minute solid particles aerosol and it can be carried out the scientific experiments that high accuracy steady is demarcated, first high-purity inertia source of the gas 8 is got out, pressure steel cylinder 7 therein to fill experiment noble gas, the powder of experiment or dust are loaded in particulate matter ration atomizer 30, clean out the bulky grain screen cloth 27 in mixed cabin 33, device for drying and filtering 6 in high-purity inertia source of the gas 8 and the particulate filter 20 of exhaust gas treatment device 21, empty the collecting tank 32 collected and hold the bulky grain solid particulate matter settled down, experimental needs connect High Accuracy Solid granule density detector 3 or the aerocolloidal associated calibration instrument 4 of minute solid particles of experiment on the demarcation interface 16 demarcate cabin 37, connect the power supply of computer control 1, open high-purity inertia source of the gas 8 to start to provide noble gas, noble gas is divided into two tunnels by temperature control pipeline 9 and flow controller 5 and is supplied respectively to the diluent nozzle 11 of particulate matter ration atomizer 30 and balance bottom, cabin 36 and carries out being atomized and diluting, the flow controller 5 by accurate flow control and temperature control pipeline 9 is added owing to the noble gas of high-purity inertia source of the gas 8 offer has stable physicochemical property, therefore, it is possible to it is constant with the noble gas dimension criteria that the diluent nozzle 11 of balance bottom, cabin 36 carries out being atomized and diluting to ensure to be input to particulate matter ration atomizer 30；High-purity inertia source of the gas 8 supplies quantitative steady noble gas to particulate matter ration atomizer 30, require over computer control 1 according to experiment and regulate concentration and the flow that flow controller 5 obtains needing, powder or the certain density minute solid particles condensation aerosol of dust atomization formation in particulate matter ration atomizer 30 are entered in mixed cabin 33 by atomizer 34 and diffuse up, set, according to requirement of experiment, the frequency bouncing motor 29 and slappe 28 and bounce bulky grain screen cloth 27, larger particles under being screened by bulky grain screen cloth 27 shakes off, the conical base of the bottom of mixed cabin 33 has an osculum and is connected to, the bulky grain solid particulate matter settled down is collected in collecting tank 32 at any time, the minute solid particles aerosol of all the other mix homogeneously obtained after the screening of the bulky grain screen cloth 27 on mixed cabin 33 top is sent directly into balance cabin 36 via the mixed export 35 of conical top directly over mixed cabin 33, the minute solid particles aerosol that mixed cabin 33 is sent into by the diluent nozzle 11 of the noble gas arrival balance bottom, cabin 36 that high-purity inertia source of the gas 8 provides is diluted, concentration and the flow that flow controller 5 obtains needing is regulated by computer control 1, electric temp control device 10 in balance cabin 36 is controlled to ensure the environment that balance cabin 36 maintains a constant temperature all the time by computer control 1, stir evenly fan 26 to be stirred by the minute solid particles aerosol that constant temperature dilutes according to requirement of experiment under the control of computer control 1, spherical demarcation cabin 37 is entered by balancing the output road junction 12 on top, cabin 36, gas in balance cabin 36 enters exhaust gas treatment device 21 after balanced-out QI KOU 25 is discharged, controlled the suction safety dumping of negative pressure pump 22 by computer control 1 after particulate filter 20 filters, period can use High Accuracy Solid granule density detector 3 to check the concentration of solid particles in balance cabin 36 at any time, it is adjusted at any time when not meeting requirement of experiment；Open the power supply of the High Accuracy Solid granule density detector 3 demarcating the experiment that interface 16 accesses on spherical demarcation cabin 37 or the aerocolloidal associated calibration instrument 4 of minute solid particles, the trace negative pressure pump 17 of experimental calibration request control and regulation calibrational capacity controller 18 and flow controller 5, it becomes possible to the marked gas flow in cabin 37 is demarcated in control and regulation；Also just can accurately adjust the aerocolloidal flow of minute solid particles demarcated in cabin 37 and concentration, carry out minute solid particles aerosol high accuracy steady and demarcate and detection；QI KOU 2 expellant gas that calibrates demarcating cabin 37 controls the suction safety dumping of negative pressure pump 22 after particulate filter 20 filters by computer control 1；After the scientific experiments using minute solid particles aerosol high accuracy steady caliberating device to carry out high accuracy steady demarcation completes, shut down computer the power supply of controller 1, closing high-purity inertia source of the gas 8 to stop supplying, demarcation and the result after detection will carry out further scientific analysis and research.
Claims (8)
1. a minute solid particles aerosol high accuracy steady caliberating device, it is characterized in that: by mixed cabin (33), balance cabin (36) and demarcation cabin (37) composition, high-purity inertia source of the gas (8) supplies quantitative steady noble gas to particulate matter ration atomizer (30), the solid particulate aerosol producing quantitative concentrations enters into mixed cabin (33) by atomizer (34), the minute solid particles aerosol being uniformly mixed after the screening of the bulky grain screen cloth (27) on mixed cabin (33) top, it is sent directly into balance cabin (36) via the mixed export (35) of conical top directly over mixed cabin (33), built with electric temp control device (10), balance cabin (36) ensure that balance cabin (36) maintains the environment of a constant temperature all the time, stir evenly fan (26), the minute solid particles aerosol that mixed cabin (33) is sent into is carried out temperature control stirring and uniformly and is diluted to required concentration and flow by diluent nozzle (11) and balance gas outlet (25), demarcation cabin (37) is entered by balancing the output road junction (12) on cabin (36) top, enclose horizontal line position to have multiple demarcation interface (16) and High Accuracy Solid granule density detector (3) or the aerocolloidal associated calibration instrument (4) of minute solid particles can be respectively connected at the middle part one demarcating cabin (37) be used for realizing detection and calibrating function, calibrational capacity controller (18) the experimental needs demarcating the connection of cabin (37) top accurately adjust the aerocolloidal flow of minute solid particles demarcated in cabin (37) and concentration, the exhaust gas treatment device (21) being connected to calibrational capacity controller (18) and balance gas outlet (25) back can ensure both to have balanced cabin (36) without any pressure disturbances in exhaust pipe and demarcated cabin (37), again can in time by balanced-out QI KOU (25) with calibrate QI KOU (2) expellant gas and be drawn into particulate filter (20) inner filtration in time completely, then pass through negative pressure pump (22) suction safety dumping, computer control (1) controls flow controller (5) by data wire (31), particulate matter ration atomizer (30), balance the electric temp control device (10) in cabin (36) and stir evenly fan (26), High Accuracy Solid granule density detector (3), associated calibration instrument (4) and negative pressure pump (22).
2. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described mixed cabin (33) is the seal hatch of the smooth cleaning easy to clean of the inner surface made by resistant material, overall cylindrical, the upper and lower of mixed cabin (33) is cone shape structure, the lower sidewalls of seal hatch has osculum and is directed inwardly into spout atomizer (34) upwards, the certain density minute solid particles condensation aerosol that particulate matter ration atomizer (30) is formed is entered in mixed cabin (33) by atomizer (34) and diffuses up, the bulky grain screen cloth (27) that an edge seal is fixing is installed in the interior middle and upper part of mixed cabin (33), equipped with bouncing motor (29) and slappe (28) in the middle of bulky grain screen cloth (27), bulky grain screen cloth (27) can be bounced according to different frequency, larger particles under being screened by bulky grain screen cloth (27) shakes off, the conical base of the bottom of mixed cabin (33) has an osculum and is connected to collecting tank (32), collect at any time and hold the bulky grain solid particulate matter settled down, the upper cone top of mixed cabin (33) has a mixed export (35) and is connected with balance cabin (36).
3. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described balance cabin (36) is the seal hatch of the smooth cleaning easy to clean of the inner surface made by resistant material, global design is columnar structured, the cylinder sidewall of a week and top are equipped with electric temp control device (10), there is mixed export (35) connection mixed cabin (33) eccentric side, balance cabin (36) bottom, in balance cabin (36) with mixed export (35) just to top sidewall on vertical stir evenly fan (26) equipped with one, stir evenly fan (26) top equipped with balanced-out QI KOU (25), balance cabin (36) top opposite side has output road junction (12) and connects with demarcating cabin (37), it is positioned at output road junction (12) below equipped with High Accuracy Solid granule density detector (3), at High Accuracy Solid granule density detector (3) below equipped with diluent nozzle (11).
4. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described demarcation cabin (37) is the seal hatch of the smooth cleaning easy to clean of inner surface made by insulation resistant material, global design is the spheroidal structure with normal volume, the bottommost opening of whole demarcation cabin (37) and balance cabin (36) are tightly connected by exporting road junction (12), top whole demarcation cabin (37) has and calibrates QI KOU (2) and flow controller (5) is tightly connected, enclose horizontal line position to have multiple demarcation interface (16) and be respectively connected to High Accuracy Solid granule density detector (3) or the aerocolloidal associated calibration instrument (4) of minute solid particles at the middle part one of whole demarcation cabin (37) and be used for realizing detection and calibrating function.
5. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described demarcation interface (16) is the Circular Pipe (14) of the inner hollow made by hard resistant material, Circular Pipe (14) mid portion is sealably coupled to the middle part one demarcating cabin (37) and encloses on multiple circular holes that horizontal line position has, Circular Pipe (14) is demarcating cabin (37) part outward equipped with outer demarcation sealing lid (15), High Accuracy Solid granule density detector (3) can be tightly connected when opening or the aerocolloidal associated calibration instrument (4) of minute solid particles is used for realizing detection and calibrating function, Circular Pipe (14) is demarcating the internal part in cabin (37) equipped with interior demarcation sealing lid (13), it can close to ensure to demarcate cabin (37) homeostasis and sealing when aerocolloidal associated calibration instrument (4) of connection High Accuracy Solid granule density detector (3) or minute solid particles.
6. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described high-purity inertia source of the gas (8) is made up of pressure steel cylinder (7) and device for drying and filtering (6), the noble gas that high-purity inertia source of the gas (8) provides is divided into two tunnels by temperature control pipeline (9) and flow controller (5) and is supplied respectively to particulate matter ration atomizer (30) and balances the diluent nozzle (11) of cabin (36) bottom and carry out being atomized and diluting, the noble gas provided due to high-purity inertia source of the gas (8) has stable physicochemical property plus by the flow controller (5) of accurate flow control and temperature control pipeline (9), therefore, it is possible to ensure to be input to particulate matter ration atomizer (30) and to balance diluent nozzle (11) the noble gas dimension criteria that carries out being atomized and diluting of cabin (36) bottom constant.
7. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: the parts that described calibrational capacity controller (18) is made up of trace negative pressure pump (17) and flow controller (5), trace negative pressure pump (17) input be connected in series a flow controller (5) be connected to demarcate cabin (37) top calibrate QI KOU (2), one of them nothing pressure that the outfan of trace negative pressure pump (17) is connected in exhaust gas treatment device (21) takes out pipe (19) input, experimental calibration request trace negative pressure pump (17) and flow controller (5) synergy can control to adjust the marked gas flow demarcated in cabin (37).
8. a kind of minute solid particles aerosol high accuracy steady caliberating device according to claim 1, it is characterized in that: described exhaust gas treatment device (21) is to be taken out pipe (19) by two nothing pressures arranged side by side, the parts that particulate filter (20) and negative pressure pump (22) combine, wherein take out, without pressure, the airflow pipeline that pipe (19) is an inside and outside double-barrel structure, urceolus one end open is as the entrance taking out pipe (19) diluent gas without pressure, the other end is sealably coupled to negative pressure pump (22) as the outfan taking out pipe (19) without pressure, inner core (24) is fixed on the axis that urceolus (23) is concentric, it is internal that one end is deeply communicated to urceolus (23), the other end attenuates and extends urceolus (23) as the input taking out pipe (19) without pressure, two nothings arranged side by side press the input one taking out pipe (19) to be connected to trace negative pressure pump (17) outfan, another is connected to balanced-out QI KOU (25), two nothings arranged side by side press the outfan taking out pipe (19) to be connected to negative pressure pump (22) after being pooled to a particulate filter (20), the plug bush structure that gos deep into taking out pipe (19) without pressure ensure that in exhaust pipe both without any pressure disturbances balance cabin (36) and demarcation cabin (37), again can in time by balanced-out QI KOU (25) with calibrate QI KOU (2) expellant gas and be drawn into particulate filter (20) inner filtration completely, then pass through the suction safety dumping of negative pressure pump (22).
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| CN104791229A (en) * | 2015-03-30 | 2015-07-22 | 江苏华凯矿业科技有限公司 | Diaphragm pump structure for direct-reading type dust concentration detector |
| CN104865166B (en) * | 2015-06-19 | 2017-05-24 | 天津开发区合普工贸有限公司 | Calibration device for realizing accurately quantified dust material diffusion test |
| CN105004648B (en) * | 2015-06-24 | 2018-01-23 | 江苏大学 | A kind of medicinal powder aerosol concentration transducer calibration experimental rig |
| CN105954075A (en) * | 2016-04-28 | 2016-09-21 | 中国原子能科学研究院 | Method for preparing series of micro-dust standard samples for XRF and TXRF analysis |
| CN106248544B (en) * | 2016-09-30 | 2023-08-04 | 北京九州鹏跃科技有限公司 | Aerosol generating device |
| CN108869828B (en) * | 2018-09-04 | 2019-09-06 | 启东市金猴除尘成套设备有限公司 | A kind of valve |
| CN116272455B (en) * | 2023-05-24 | 2023-08-04 | 北京市农林科学院信息技术研究中心 | Bioaerosol generating system |
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