CN109085026B - Particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment - Google Patents
Particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment Download PDFInfo
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- CN109085026B CN109085026B CN201811226495.4A CN201811226495A CN109085026B CN 109085026 B CN109085026 B CN 109085026B CN 201811226495 A CN201811226495 A CN 201811226495A CN 109085026 B CN109085026 B CN 109085026B
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- 238000005070 sampling Methods 0.000 title claims abstract description 28
- 230000005250 beta ray Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 239000013618 particulate matter Substances 0.000 title claims abstract description 15
- 239000008277 atmospheric particulate matter Substances 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims description 10
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000002285 radioactive effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012952 Resampling Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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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
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Dispersion Chemistry (AREA)
- Measurement Of Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention relates to a particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment, wherein the particulate matter sampling device is characterized by comprising a substrate, and the substrate is vertically arranged; an upper connecting block fixed on the front surface of the substrate, wherein an air inlet duct penetrating through the lower end surface of the upper connecting block is formed in the upper connecting block; the lower connecting block is fixed on the front surface of the substrate, and an air outlet duct penetrating through the upper end surface of the lower connecting block is formed in the lower connecting block; the upper end and the lower end of the guide piece are respectively connected with the upper connecting block and the lower connecting block; the sealing block is arranged between the upper connecting block and the lower connecting block; the upper end of the gas transmission pipeline is correspondingly arranged with the gas outlet pore canal, and the lower end of the gas transmission pipeline extends out of the sealing block and is communicated and fixed with the gas outlet pore canal; the upper end and the lower end of the spring piece are respectively connected with the sealing block and the lower connecting block; and a driving mechanism arranged on the back surface of the substrate and used for driving the sealing block to move up and down. The filter paper is more accurate in positioning, and the accuracy of monitoring data is improved.
Description
Technical Field
The invention relates to a particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment.
Background
In autumn and winter, the grey haze weather occurs in key city groups in China, and has the advantages of long duration, wide influence area range and deep pollution degree, and causes great harm to human society. The particulate matters in the atmosphere are taken as main components of dust haze, and are key monitoring items of the quality of the atmospheric environment. The atmospheric particulates are mainly divided into PM according to the particle size 10 And PM 2.5 Beta-ray absorption techniques are typically employed for automatic monitoring. The principle of the method is that when the atmospheric air with constant flow rate enters the sampling system and is trapped and enriched by the filter paper, the intensity of beta rays is attenuated when the beta rays pass through the filter paper enriched with the particulate matters, and the concentration of the particulate matters can be calculated by the attenuation. Normally beta-rayThe automatic monitor for atmospheric particulate matters by the line method consists of an air inlet part, a collecting and sampling part, a detecting part and other auxiliary equipment.
When the automatic monitor for the atmospheric particulate matters by the beta-ray method is used for sampling, firstly, the flow and the temperature of the sample gas are regulated and controlled, then the sample gas is introduced into a gas path from an outer pipe and then collected by filter paper, and finally, the particulate matters collected by the filter paper are detected by a detector; the position and state of the filter paper in the process influence the detection result. Meanwhile, in the paper feeding process of resampling to replace the filter paper, the filter paper needs to be accurately controlled and positioned.
The particle sampling device is in dynamic operation in the whole monitoring process, a plurality of uncontrollable factors can be brought, the fault rate is increased under the long-time operation of the monitor, the error of a data result is increased, the credibility of the instrument is reduced, for example, after long-time operation, the particle sampling device is difficult to accurately position filter paper, and the particle sampling result is inaccurate.
Thus, new devices and apparatus are needed to address the deficiencies of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the particulate matter sampling device, which has the advantages that the filter paper is positioned more accurately, and the accuracy of monitoring data is improved.
In order to solve the technical problems, the technical scheme of the invention is as follows: a particulate matter sampling device, with filter paper cooperation use, its difference lies in:
the device comprises a substrate, wherein the substrate is vertically arranged;
an upper connecting block fixed on the front surface of the substrate, wherein an air inlet channel penetrating through the lower end surface of the upper connecting block is formed in the upper connecting block;
the lower connecting block is fixed on the front surface of the substrate, the lower connecting block is positioned below the upper connecting block, the lower connecting block and the upper connecting block are arranged at intervals, and an air outlet duct penetrating through the upper end surface of the lower connecting block is formed in the lower connecting block;
the upper end and the lower end of the guide piece are respectively connected with the upper connecting block and the lower connecting block;
the sealing block is arranged between the upper connecting block and the lower connecting block and can move along the guide piece to press the filter paper or move downwards to loosen the filter paper;
the upper end of the gas transmission pipeline is correspondingly arranged with the gas outlet pore canal, and the lower end of the gas transmission pipeline extends out of the sealing block and is communicated and fixed with the gas outlet pore canal;
the linear bearing is arranged in the sealing block and sleeved on the guide piece;
the upper end and the lower end of the spring piece are respectively connected with the sealing block and the lower connecting block, and the spring pieces are uniformly distributed along the edge of the sealing block; and
And the driving mechanism is arranged on the back surface of the substrate and used for driving the sealing block to move up and down.
According to the technical scheme, the device further comprises a beta radioactive source arranged on the lower connecting block and a detector arranged on the upper connecting block, wherein the detector is arranged corresponding to the beta radioactive source.
According to the technical scheme, the gas transmission pipeline comprises a gas transmission hole part which is arranged on the sealing block, the gas transmission hole part penetrates through the sealing block, the gas transmission pipeline also comprises a gas transmission pipe part, one end of the gas transmission pipe part is connected with the gas transmission hole part, the other end of the gas transmission pipe part is connected with the gas outlet duct, and the gas transmission pipe part is telescopic; or, the gas transmission pipeline is telescopic, a yielding hole suitable for the gas transmission pipeline to pass through is formed in the sealing block, a first sealing ring is connected to the upper end of the gas transmission pipeline, and the first sealing ring is fixed to the upper end of the yielding hole.
According to the technical scheme, go up and link the piece, link the piece down, seal the piece and be the cuboid structure, it has four sides to link the piece down, the guide has four and is close to link four side endpoints of piece down and set up.
According to the technical scheme, go up and link the piece, link the piece down, seal the piece and be the cuboid structure, it has four sides to link the piece down, the spring part has four and is close to respectively the mid point setting of four sides of linking the piece down.
Compared with the prior art, the invention has the beneficial characteristics that: according to the particulate matter sampling device, the sealing block can move up and down to clamp or loosen the filter paper, so that the filter paper is convenient to sample and feed, the filter paper can be accurately positioned, the upper connecting block and the lower connecting block are both fixed with the substrate, measurement errors caused by transmission are reduced, and the accuracy of monitoring data is improved; the lower extreme evenly distributed of sealing block has a plurality of spring spare, can make the upper end of sealing block remain level all the time and fully press from both sides tight filter paper, and the filter paper location is more accurate, has improved the accuracy of particulate matter sampling result.
In order to solve the technical problems, the invention also provides equipment for monitoring the atmospheric particulates by using the beta-ray method, which is characterized in that: the filter paper collecting device comprises an air inlet pipeline, an air outlet pipeline, a paper feeding mechanism for conveying filter paper and the particulate matter sampling device, wherein the air inlet pipeline is connected with an air inlet duct, the air outlet pipeline is connected with the air outlet duct, the paper feeding mechanism comprises a paper feeding wheel, a first conveying wheel, a second conveying wheel and a paper collecting wheel which are arranged on the front face of a substrate, the filter paper is coiled on the paper feeding wheel and sequentially passes through the first conveying wheel, the particulate matter sampling device and the second conveying wheel, and then is recovered by the paper collecting wheel.
According to the technical scheme, the paper feeding wheel and the first conveying wheel are positioned on one side of the substrate, the paper collecting wheel and the second conveying wheel are positioned on the other side of the substrate, the highest point of the outer edge of the first conveying wheel and the highest point of the outer edge of the second conveying wheel are positioned on the same horizontal plane, the horizontal plane is positioned at the lower end of the upper connecting block and is close to the lower end face of the upper connecting block, and the paper feeding wheel and the paper collecting wheel are respectively arranged on two sides of the lower end of the lower connecting block.
According to the technical scheme, the first conveying wheel can swing, the equipment further comprises a sixth rotating shaft and a connecting rod, wherein the sixth rotating shaft and the connecting rod are arranged on the back surface of the substrate, the lower end of the connecting rod is connected with the sixth rotating shaft, the upper end of the connecting rod is bent to form a bending part, the bending part penetrates through the substrate and is fixed with the first conveying wheel, and an arc-shaped guide hole matched with the bending part is formed in the substrate.
According to the technical scheme, the two sides of the arc-shaped guide hole are provided with the third photoelectric encoders.
Compared with the prior art, the invention has the beneficial characteristics that: the sealing block can move up and down to clamp or loosen the filter paper, so that the filter paper can be sampled and fed conveniently, the filter paper can be positioned accurately, the upper connecting block and the lower connecting block are fixed with the substrate, the measurement error caused by transmission is reduced, and the accuracy of monitoring data is improved; the lower extreme evenly distributed of sealing block has a plurality of spring spare, can make the upper end of sealing block remain level all the time and fully press from both sides tight filter paper, and the filter paper location is more accurate, has improved the accuracy of particulate matter sampling result.
Drawings
FIG. 1 is a schematic diagram of the structure of a sealing block in one embodiment of the beta-ray atmospheric particulate monitoring device of the present invention when the sealing block compresses filter paper;
FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a schematic view of the cross-sectional B-B structure of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the embodiment of FIG. 1, showing the sealing block in a state of releasing the filter paper;
FIG. 6 is a partial schematic view of the structure of FIG. 5;
FIG. 7 is a schematic diagram of a gas transmission pipeline in an embodiment of the beta-ray atmospheric particulate monitoring device according to the present invention;
FIG. 8 is a schematic diagram showing the structure of a sealing block pressing filter paper according to an embodiment of the present invention;
FIG. 9 is a schematic view of the cross-sectional C-C structure of FIG. 8;
FIG. 10 is a rear view of FIG. 8;
FIG. 11 is a schematic view showing the structure of the sealing block in the embodiment shown in FIG. 8 when the sealing block releases the filter paper;
wherein: 1-filter paper, 2-substrate (front side of 2 a-substrate, back side of 2 b-substrate, 201-first guide hole, 202-second guide hole, 203-arc guide hole), 3-upper block (lower end face of 3 a-upper block, 301-air inlet duct), 4-lower block (upper end face of 4 a-lower block, 401-air outlet duct, 402-side), 5-guide piece, 6-sealing block (upper end face of 6 a-sealing block, 601-relief hole, 602-gas transmission hole portion), 7-gas transmission pipeline (701-gas transmission pipe portion), 8-linear bearing, 9-spring piece, 10-drive mechanism (1001-first output shaft, 1002-first drive motor, 1003-first dial (10031-first notch portion), 1004-first transmission wheel (1004 a-circumferential face of first transmission wheel), first transmission rod (10051-vertical portion, 10052-horizontal portion), 1006-first optical encoder, 1007-second output shaft, 1008-second drive motor 1008-second dial (1011008-second transmission wheel portion), second transmission wheel (1011010-third transmission wheel portion 1011010), third transmission wheel (10131-transmission shaft portion 1011010), third transmission wheel portion 1011010-transmission wheel portion (10131-transmission shaft portion 1011010) 1016-third rotating shaft, 1017-fourth rotating shaft, 1018-fifth rotating shaft, 1019-rotating reference shaft, 1020-second photoelectric encoder), 11-beta radioactive source, 12-detector, 13-first sealing ring, 14-protective sleeve, 15-second sealing ring, 16-air inlet pipeline, 17-air outlet pipeline, 18-paper feeding wheel, 19-first conveying wheel (highest point of outer edge of 19 a-first conveying wheel), 20-second conveying wheel (highest point of outer edge of 20 a-second conveying wheel), 21-paper collecting wheel, 22-sixth rotating shaft, 23-connecting rod, 24-third photoelectric encoder, 25-third sealing ring and 26-fourth sealing ring.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments.
Referring to fig. 1 to 11, the particulate sampling device according to the embodiment of the present invention is used in cooperation with filter paper 1, and includes a substrate 2, wherein the substrate 2 is vertically disposed, and the substrate 2 has a front surface 2a and a back surface 2b that are disposed opposite to each other;
an upper connecting block 3 fixed on the front surface 2a of the substrate, wherein the upper connecting block 3 is provided with an air inlet duct 301 penetrating through the lower end surface 3a of the upper connecting block;
the lower connecting block 4 is fixed on the front surface 2a of the substrate, the lower connecting block 4 is positioned below the upper connecting block 3, the lower connecting block 4 and the upper connecting block 3 are arranged at intervals, and an air outlet duct 401 penetrating through the upper end surface 4a of the lower connecting block is formed in the lower connecting block 4;
the upper end of the guide piece 5 is connected with the upper connecting block 3, and the lower end of the guide piece 5 is connected with the lower connecting block 4;
a sealing block 6 provided between the upper and lower blocks 3 and 4, the sealing block 6 being movable along the guide 5 to press the filter paper 1 or downwardly to release the filter paper 1;
the gas transmission pipeline 7 penetrates through the sealing block 6, the upper end of the gas transmission pipeline 7 is correspondingly arranged with the gas outlet pore canal 301, and the lower end of the gas transmission pipeline 7 extends out of the sealing block 6 and is fixedly communicated with the gas outlet pore canal 401;
the linear bearing 8 is arranged in the sealing block 6, and the linear bearing 8 is sleeved on the guide piece 5;
the upper end and the lower end of the spring pieces 9 are respectively connected with the sealing block 6 and the lower connecting block 4, and the spring pieces 9 are uniformly distributed along the edge of the sealing block 6; and
And a driving mechanism 10 provided on the back surface 2b of the substrate for driving the sealing block 6 to move up and down.
Specifically, the device further comprises a beta radiation source 11 arranged on the lower connecting block 4 and a detector 12 arranged on the upper connecting block 3, wherein the detector 12 is arranged corresponding to the beta radiation source 11.
In other embodiments, please refer to fig. 6, in order to improve the sealing performance, the gas pipeline 7 is prevented from being broken in the use process, the gas pipeline 7 is in a telescopic tubular structure, a yielding hole 601 suitable for the gas pipeline 7 to pass through is formed in the sealing block 6, a first sealing ring 13 is connected to the upper end of the gas pipeline 7, and the first sealing ring 13 is fixed to the upper end of the yielding hole 601. In order to prevent the sealing block 6 from being pressed down, the gas transmission pipeline 7 is clamped in the gap between the sealing block 6 and the lower connecting block 4, the device further comprises a protection sleeve 14 sleeved outside the gas transmission pipeline 7, the lower end of the protection sleeve 14 is fixed with the lower connecting block 4, and the upper end of the protection sleeve 14 extends into the yielding hole 601. In order to improve the sealing performance, referring to fig. 5 and 11, the lower end of the upper connecting block 3 has a second sealing ring 15 coaxially disposed with the air inlet channel 301 and engaged with the first sealing ring 13.
In some embodiments, referring to fig. 7, for easy installation and replacement, the gas delivery pipeline 7 includes a gas delivery hole 602 formed on the sealing block 6, the gas delivery hole 602 penetrates through the sealing block 6, the gas delivery pipeline 7 further includes a gas delivery pipe 701, one end of the gas delivery pipe 701 is connected to the gas delivery hole 602 through a third sealing ring 25, the other end is connected to the gas delivery duct 401 through a fourth sealing ring 26, and the gas delivery pipe 701 is telescopic.
Preferably, the upper connecting block 3, the lower connecting block 4 and the sealing block 6 are all in a cuboid structure, the lower connecting block 4 has four sides 402, please refer to fig. 4, in order to improve the guiding stability, the guiding member 5 has four sides and is disposed near the ends of the four sides 402 of the lower connecting block.
After long-term use, the upper end surface 6a of the sealing block may be worn, or the transmission is poor due to errors generated by the movement of the driving mechanism 10, so that the sealing block 6 cannot tightly press the filter paper 1, and the filter paper 1 is positioned inaccurately. Therefore, preferably, the upper connecting block 3, the lower connecting block 4 and the sealing block 6 are all in cuboid structures, the lower connecting block 4 has four sides 402, please refer to fig. 4, in order to improve the effect of the spring member 9 on the sealing block 6, the sealing block 6 can better compress the filter paper 1, and the spring member 9 has four sides and is respectively arranged near the midpoints of the four sides 402 of the lower connecting block 4.
In some embodiments, please refer to fig. 1, 2, 3 and 5, the driving mechanism 10 includes a first driving motor 1002 having a first output shaft 1001, a first rotating disc 1003 disposed on the first output shaft 1001 and having a first notch 10031 at an edge thereof, a first driving wheel 1004 disposed on the first output shaft 1001, and an L-shaped first driving rod 1005 disposed at a lower end of the first driving wheel 1004, the first rotating disc 1003 is coaxially disposed with the first output shaft 1001, the first driving wheel 1004 is an eccentric wheel, the first driving rod 1005 includes a vertical portion 10051, and a horizontal portion 10052 formed at a lower end of the vertical portion 10051, an upper end of the vertical portion 10051 abuts against a circumferential surface 1004a of the first driving wheel, the horizontal portion 10052 is fixed with a first guiding hole 201 passing through the substrate 2 and cooperating with the sealing block 6, the first guiding hole 201 extends vertically, and the device further includes a first optical encoder 1006 disposed on a back surface 2b and cooperating with the first notch 1006, and the first optical encoder 1006 is disposed symmetrically on both sides of the first rotating disc 1006. The working principle is as follows: the first driving wheel 1004 rotates along with the first output shaft 1001, the first driving rod 1005 abutting against the first driving wheel 1004 moves up and down under the acting force of the first driving wheel 1004 and the spring member 9 to compress or loosen the filter paper 1, when the sealing block 6 is located at the position shown in fig. 5, the sealing block 6 moves to the lowest point position, the control system controls the first driving motor 1002 to stop rotating, and at the moment, the paper feeding mechanism starts to convey the filter paper 1. After the filter paper 1 is transferred in place, the control system controls the first driving motor 1002 to start rotating, when the first rotating disc 1003 rotates to the position shown in fig. 1, the first notch 10031 is aligned to the first photoelectric encoder 1006 on one side, as shown in fig. 1, the control system of the automatic monitoring device for the atmospheric particulate matter by the beta-ray method controls the first driving motor 1002 to stop rotating, at this time, the sealing block 6 compresses the filter paper 1, as shown in fig. 2 and 3, and the automatic monitoring device for the atmospheric particulate matter by the beta-ray method starts sampling and monitoring. After the automatic monitoring instrument for the atmospheric particulate matters by the beta-ray method samples and monitors the atmospheric particulate matters, the control system controls the first driving motor 1002 to start rotating, when the first rotating disc 1003 rotates to the first notch 10031 to be aligned with the first photoelectric encoder 1006 on the other side, the position of the sealing block 6 is shown in fig. 5, the sealing block 6 releases the filter paper 1, and at the moment, the paper feeding mechanism starts to convey the filter paper 1, and the reciprocating circulation is performed.
In other embodiments, please refer to fig. 8 to 11, the driving mechanism 10 includes a second driving motor 1008 having a second output shaft 1007, a second rotary table 1009 disposed on the second output shaft 1007 and having a second notch 10091 at the edge, a second driving wheel 1010 disposed on the second output shaft 1007, a third driving wheel 1011 disposed on the second driving wheel end face 1010a, two second driving rods 1012 symmetrically disposed under the third driving wheel 1011, and a connecting body 1013 connecting the third driving wheel 1011 and the second driving rod 1012, wherein the second rotary table 1009 and the second driving wheel 1010 are both coaxially disposed with the second output shaft, the third driving wheel 1011 is an eccentric wheel and the lower end of the third driving wheel 1011 is provided with a first connecting portion 10111, the third driving wheel 1011 and the second driving wheel 1010 are connected through a first rotary shaft 1014, the first rotary shaft 1014 is disposed on the center of the third driving wheel 1011 and is not disposed on the center of the second 1010, the third driving wheel 1011 can rotate around the second rotary shaft 101comprising a connecting body 1016 and a connecting portion 1019, the second rotary shaft 101is further connected with the second connecting portion 1019 through a second connecting portion 1019 and a second connecting portion 1012, the connecting portion 1019 is further connected with the second connecting portion 1012 through a second connecting hole 1018, and the second connecting portion 1019 is disposed near the second connecting portion 1012 and the second connecting portion 1012 through a second connecting portion 1012, and the second connecting portion 1012 connecting portion 10132 and the second connecting portion 1010 through a second connecting portion 32, the first rotating shaft 1014 and the second rotating shaft 1015 are arranged in parallel, the third rotating shaft 1016, the fourth rotating shaft 1017, the fifth rotating shaft 1018 and the rotation reference shaft 1019 are arranged in parallel, the rotation reference shaft 1019 is arranged perpendicular to the first rotating shaft 1014, the device further comprises a second photoelectric encoder 1020 which is arranged on the back surface 2b of the substrate and is matched with the second notch 10091, and the second photoelectric encoder 1020 is two and symmetrically arranged on two sides of the second turntable 1009. The working principle is as follows: the second driving wheel 1010 rotates along with the second output shaft 1007, the third driving wheel 1011 rotates along with the second driving wheel 1010 and can rotate relative to the second driving wheel 1010, and the second driving rod 1012 is connected with the second driving wheel 1010 through the connecting body 1013. When the first rotation shaft 1014 moves to the lowest point position, i.e., the position shown in fig. 8 to 10, under the driving of the connection body 1013, the sealing block 6 presses the filter paper 1. When the first shaft 1014 moves to the highest point, i.e. the position shown in fig. 11, the sealing block releases the filter paper 1.
Referring to fig. 1 to 11, the apparatus for monitoring atmospheric particulates by β -ray method according to the embodiment of the present invention includes an air inlet pipe 16, an air outlet pipe 17, a paper feeding mechanism for transporting the filter paper, and the particulate sampling device, wherein the air inlet pipe 16 is connected to the air inlet duct 301, the air outlet pipe 17 is connected to the air outlet duct 401, the paper feeding mechanism includes a paper feeding wheel 18, a first conveying wheel 19, a second conveying wheel 20, and a paper collecting wheel 21 disposed on the front surface 2a of the substrate, and the filter paper 1 is wound on the paper feeding wheel 18 and sequentially passes through the first conveying wheel 19, the particulate sampling device, the second conveying wheel 20, and is then recovered by the paper collecting wheel 21.
Referring to fig. 3 and 10, the paper feeding wheel 18 and the first conveying wheel 19 are located on one side of the substrate 2, the paper collecting wheel 21 and the second conveying wheel 20 are located on the other side of the substrate 2, the highest point 19a of the outer edge of the first conveying wheel and the highest point 20a of the outer edge of the second conveying wheel are located on the same horizontal plane, the horizontal plane is located at the lower end of the upper connecting block 3 and is close to the lower end face 3a of the upper connecting block, and the paper feeding wheel 18 and the paper collecting wheel 19 are respectively located at two sides of the lower end of the lower connecting block 4.
Referring to fig. 1 and 8, the first transfer wheel 19 may swing, the apparatus further includes a sixth rotating shaft 22 and a connecting rod 23 disposed on the back surface 2b of the substrate, the lower end of the connecting rod 23 is connected with the sixth rotating shaft 22, the upper end of the connecting rod 23 is bent to form a bending portion, the bending portion passes through the substrate 2 and is fixed with the first transfer wheel 19, an arc-shaped guide hole 203 matched with the bending portion is formed on the substrate 2, and third photoelectric encoders 24 are disposed on two sides of the arc-shaped guide hole 203.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and is not intended to limit the practice of the invention to such descriptions. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present invention, and the present invention is not limited to the above-described embodiments.
Claims (8)
1. The utility model provides a particulate matter sampling device, uses its characterized in that with filter paper cooperation:
the device comprises a substrate, wherein the substrate is vertically arranged;
an upper connecting block fixed on the front surface of the substrate, wherein an air inlet channel penetrating through the lower end surface of the upper connecting block is formed in the upper connecting block;
the lower connecting block is fixed on the front surface of the substrate, the lower connecting block is positioned below the upper connecting block, the lower connecting block and the upper connecting block are arranged at intervals, and an air outlet duct penetrating through the upper end surface of the lower connecting block is formed in the lower connecting block;
the upper end and the lower end of the guide piece are respectively connected with the upper connecting block and the lower connecting block;
the sealing block is arranged between the upper connecting block and the lower connecting block and can move along the guide piece to press the filter paper or move downwards to loosen the filter paper;
the upper end of the gas transmission pipeline is correspondingly arranged with the gas outlet pore canal, and the lower end of the gas transmission pipeline extends out of the sealing block and is communicated and fixed with the gas outlet pore canal;
the linear bearing is arranged in the sealing block and sleeved on the guide piece;
the upper end and the lower end of the spring piece are respectively connected with the sealing block and the lower connecting block, and the spring pieces are uniformly distributed along the edge of the sealing block; and
The driving mechanism is arranged on the back surface of the substrate and used for driving the sealing block to move up and down;
the upper connecting block, the lower connecting block and the sealing block are of cuboid structures, the lower connecting block is provided with four side edges, and the four spring pieces are respectively arranged close to the midpoints of the four side edges of the lower connecting block;
the detector is arranged on the upper connecting block, and the detector is arranged corresponding to the beta radioactive source.
2. The particulate sampling device of claim 1, wherein: the gas transmission pipeline comprises a gas transmission hole part which is formed in the sealing block, the gas transmission hole part penetrates through the sealing block, the gas transmission pipeline further comprises a gas transmission pipe part, one end of the gas transmission pipe part is connected with the gas transmission hole part, the other end of the gas transmission pipe part is connected with the gas outlet duct, and the gas transmission pipe part is telescopic.
3. The particulate sampling device of claim 1, wherein: the gas transmission pipeline is telescopic, a yielding hole which is suitable for the gas transmission pipeline to pass through is formed in the sealing block, a first sealing ring is connected to the upper end of the gas transmission pipeline, and the first sealing ring is fixed to the upper end of the yielding hole.
4. The particulate sampling device of claim 1, wherein: the upper connecting block, the lower connecting block and the sealing block are of cuboid structures, the lower connecting block is provided with four sides, and four guide pieces are arranged and close to the end points of the four sides of the lower connecting block.
5. Beta ray method atmospheric particulates monitoring facilities, its characterized in that: the filter paper collecting device comprises an air inlet pipeline, an air outlet pipeline, a paper feeding mechanism for conveying the filter paper and a particulate matter sampling device according to any one of claims 1 to 4, wherein the air inlet pipeline is connected with an air inlet duct, the air outlet pipeline is connected with an air outlet duct, the paper feeding mechanism comprises a paper feeding wheel, a first conveying wheel, a second conveying wheel and a paper collecting wheel which are arranged on the front face of a substrate, and the filter paper is coiled on the paper feeding wheel and sequentially passes through the first conveying wheel, the particulate matter sampling device and the second conveying wheel and is then recovered by the paper collecting wheel.
6. The beta-ray atmospheric particulate monitoring device of claim 5, wherein: the paper feeding wheel and the first conveying wheel are positioned on one side of the substrate, the paper collecting wheel and the second conveying wheel are positioned on the other side of the substrate, the highest point of the outer edge of the first conveying wheel and the highest point of the outer edge of the second conveying wheel are positioned on the same horizontal plane, the horizontal plane is positioned at the lower end of the upper connecting block and is close to the lower end face of the upper connecting block, and the paper feeding wheel and the paper collecting wheel are respectively arranged on two sides of the lower end of the lower connecting block.
7. The beta-ray atmospheric particulate monitoring device of claim 5, wherein: the device comprises a substrate, a first conveying wheel, a second conveying wheel, a connecting rod, a bending part, an arc-shaped guide hole and a guide plate, wherein the first conveying wheel can swing, the sixth rotating shaft is arranged on the back of the substrate, the connecting rod is arranged at the lower end of the connecting rod and connected with the sixth rotating shaft, the upper end of the connecting rod is bent to form the bending part, the bending part penetrates through the substrate and is fixed with the first conveying wheel, and the substrate is provided with the arc-shaped guide hole matched with the bending part.
8. The beta-ray atmospheric particulate monitoring device of claim 7, wherein: and third photoelectric encoders are arranged on two sides of the arc-shaped guide hole.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000321181A (en) * | 1999-05-10 | 2000-11-24 | Dkk Corp | Breathing device to filter paper |
| CN101975684A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Sampling pipe lifting device of beta-ray method PM10 (Particulate Matter 10) on-line monitor |
| CN202033268U (en) * | 2011-03-07 | 2011-11-09 | 杜永强 | On-line multipoint calibrating device of on-line continuous particulate concentration monitor |
| CN205506627U (en) * | 2016-02-23 | 2016-08-24 | 中煤科工集团重庆研究院有限公司 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
| KR101721606B1 (en) * | 2016-11-10 | 2017-04-03 | 대한민국 | Apparatus for reel-type analyzing particles in particulate matter and analyzing method using the same |
| KR101733998B1 (en) * | 2016-11-10 | 2017-05-12 | 대한민국 | Apparatus for sampling particulate matter and sampling method using the same |
| CN106769741A (en) * | 2017-02-15 | 2017-05-31 | 江苏苏净集团有限公司 | A kind of particle concentration detection means and detection method |
| CN206420734U (en) * | 2017-02-15 | 2017-08-18 | 江苏苏净集团有限公司 | A kind of particle concentration detection means |
| JP2018017666A (en) * | 2016-07-29 | 2018-02-01 | 東亜ディーケーケー株式会社 | Measurement device |
| CN108152181A (en) * | 2018-03-20 | 2018-06-12 | 青岛众瑞智能仪器有限公司 | A kind of paper advance mechanism integral movable type double-station particle monitoring device |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
| CN209148376U (en) * | 2018-10-22 | 2019-07-23 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
-
2018
- 2018-10-22 CN CN201811226495.4A patent/CN109085026B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000321181A (en) * | 1999-05-10 | 2000-11-24 | Dkk Corp | Breathing device to filter paper |
| CN101975684A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Sampling pipe lifting device of beta-ray method PM10 (Particulate Matter 10) on-line monitor |
| CN202033268U (en) * | 2011-03-07 | 2011-11-09 | 杜永强 | On-line multipoint calibrating device of on-line continuous particulate concentration monitor |
| CN205506627U (en) * | 2016-02-23 | 2016-08-24 | 中煤科工集团重庆研究院有限公司 | Filter paper closing device of beta - ray method monitoring of atmospheric particulates equipment |
| JP2018017666A (en) * | 2016-07-29 | 2018-02-01 | 東亜ディーケーケー株式会社 | Measurement device |
| KR101721606B1 (en) * | 2016-11-10 | 2017-04-03 | 대한민국 | Apparatus for reel-type analyzing particles in particulate matter and analyzing method using the same |
| KR101733998B1 (en) * | 2016-11-10 | 2017-05-12 | 대한민국 | Apparatus for sampling particulate matter and sampling method using the same |
| CN106769741A (en) * | 2017-02-15 | 2017-05-31 | 江苏苏净集团有限公司 | A kind of particle concentration detection means and detection method |
| CN206420734U (en) * | 2017-02-15 | 2017-08-18 | 江苏苏净集团有限公司 | A kind of particle concentration detection means |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
| CN108152181A (en) * | 2018-03-20 | 2018-06-12 | 青岛众瑞智能仪器有限公司 | A kind of paper advance mechanism integral movable type double-station particle monitoring device |
| CN209148376U (en) * | 2018-10-22 | 2019-07-23 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
Non-Patent Citations (1)
| Title |
|---|
| β射线法大气颗粒物监测仪 纸带等步长输送传动机构设计;潘焕双等;安徽科技(第1期);47-48 * |
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|---|---|
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