CN113804509A - Device for measuring content of non-methane total hydrocarbons in ambient air - Google Patents
Device for measuring content of non-methane total hydrocarbons in ambient air Download PDFInfo
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- CN113804509A CN113804509A CN202111009877.3A CN202111009877A CN113804509A CN 113804509 A CN113804509 A CN 113804509A CN 202111009877 A CN202111009877 A CN 202111009877A CN 113804509 A CN113804509 A CN 113804509A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 19
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 19
- 239000012080 ambient air Substances 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 55
- 238000012216 screening Methods 0.000 claims abstract description 40
- 239000003570 air Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 5
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 description 7
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression 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
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
本发明公开了大气环境检测设备技术领域的一种环境空气中非甲烷总烃含量测定装置，包括，检测设备，以及，采样设备，包括采样箱、筛选机构与抽气设备，且采样箱安装在检测设备的顶部壁上，且采样箱内腔与检测设备的进气口连通，且抽气设备安装在采样箱的内腔底部，所述筛选机构安装在采样箱的内腔顶部，其中，所述筛选机构包括滑动安装在采样箱内腔顶部的筛选组件，装置中由缓冲弹簧伸缩缓冲，使筛选组件上方堆积的杂质较多而使筛网受到的压力增大时能够减小筛网受到的压力，使筛网发生弯曲形变的几率减小，避免因此导致筛网的孔径变大而影响过滤阻挡的质量，保证采样设备的使用寿命。
The invention discloses a device for measuring the content of non-methane total hydrocarbons in ambient air, which belongs to the technical field of atmospheric environment detection equipment. On the top wall of the detection device, and the inner cavity of the sampling box is communicated with the air inlet of the detection device, and the air extraction device is installed at the bottom of the inner cavity of the sampling box, and the screening mechanism is installed at the top of the inner cavity of the sampling box, wherein all the The screening mechanism includes a screening assembly slidably installed on the top of the inner cavity of the sampling box. The buffer spring is used for expansion and contraction in the device, so that more impurities are accumulated above the screening assembly and the pressure on the screen is increased. The pressure reduces the probability of bending and deformation of the screen, avoids the increase of the aperture of the screen and affects the quality of the filtration barrier, and ensures the service life of the sampling equipment.
Description
Technical Field
The invention relates to the technical field of atmospheric environment detection equipment, in particular to a device for measuring the content of non-methane total hydrocarbons in ambient air.
Background
The non-methane total hydrocarbon refers to hydrocarbon except methane, and when the content of the non-methane total hydrocarbon in the air reaches a certain value, the non-methane total hydrocarbon can cause harm to people and the environment and needs to be detected.
When the content of the non-methane total hydrocarbons in the ambient air is tested by using a measuring device, an air sample of a testing area needs to be collected firstly, and then the sample air is tested by using detection equipment, so that the content of the non-methane total hydrocarbons is determined;
in order to avoid impurities in the air entering the detection equipment when an air sample is collected, the screen is generally used for filtering and blocking, however, the impurities are accumulated above the screen along with the increase of the blocked impurities, the filtering holes above the screen can be blocked, the air quantity passing through the screen at one time is reduced, the working efficiency of the air extraction equipment of the collection equipment is unchanged, the screen is of a net structure and has poor strength, the pressure of the sampled air on the screen is increased, and the screen is easy to damage.
Disclosure of Invention
The invention aims to provide a device for measuring the content of non-methane total hydrocarbons in ambient air, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the device for measuring the content of non-methane total hydrocarbons in the ambient air comprises a detection device; and the number of the first and second groups,
the sampling device comprises a sampling box, a screening mechanism and an air extracting device, the sampling box is arranged on the top wall of the detection device, the inner cavity of the sampling box is communicated with an air inlet of the detection device, the air extracting device is arranged at the bottom of the inner cavity of the sampling box, the screening mechanism is arranged at the top of the inner cavity of the sampling box,
wherein, screening mechanism includes the screening subassembly of slidable mounting at sampling box inner chamber top.
As preferred, screening subassembly left and right sides wall all installs the direction slider, and the guide way has all been seted up to the sampling case left and right sides inner wall, the direction slider slides and inserts in the inner chamber of guide way, install buffer spring between direction slider bottom wall and the guide way inner chamber bottom.
As preferred, the screening subassembly includes three group's screen cloth that from the top down distributes in proper order, the downside screen cloth left and right sides wall is connected with a lateral wall that two sets of direction sliders are close to each other respectively, and the upside is two sets of the screen cloth comprises two components screen cloth, and the opening has all been seted up to the sampling box left and right sides inner wall, and the sampling box left and right sides outer wall all installs and receive and release the case, and receive and release the case inner chamber and pass through opening and sampling equipment inner chamber intercommunication.
As preferred, the collection box is kept away from a lateral wall of sampling box and is installed the rolling subassembly, collection box inner chamber top is through elastic component and guide block sliding connection, the guide block is kept away from and is installed the stay cord between a lateral wall of sampling box and the rolling subassembly output shaft, the guide block is kept away from the one end of stay cord and is installed the electro-magnet, and the upside is two sets of the magnetic path is all installed to the screen cloth left and right sides wall.
Preferably, a moving groove is formed in one side wall, close to the electromagnet, of the guide block, an inner cavity of the moving groove is connected with the moving block in a sliding mode through a tension spring, and one side wall, far away from the guide block, of the moving block is fixedly connected with the outer wall of the electromagnet.
Preferably, an installation rod is installed at the bottom of the inner cavity of the guide groove, a touch switch is installed at the top end of the installation rod and located below the guide sliding block, and the touch switch is electrically connected with the electromagnet and the winding assembly respectively.
Preferably, the connecting part of the guide groove and the mounting rod is provided with a mounting hole, the mounting rod is inserted into the inner cavity of the mounting hole in a sliding manner, the inner wall of the sampling box is screwed with a fixing bolt, and the fixing bolt extends into the inner cavity of the mounting hole and is attached to the outer wall of the mounting rod.
Preferably, the guide sliders on the left side and the right side are provided with mounting blocks on the side walls close to each other, mounting openings are formed in the top walls of the mounting blocks, the inner cavities of the mounting openings are in sliding connection with the supporting blocks through elastic elements, and the top walls of the supporting blocks are fixedly connected with the bottom wall of the lower screen.
Preferably, the outer wall of the supporting block is provided with a transverse mounting groove, a limiting block is inserted into the inner cavity of the mounting groove and is slidably mounted in the inner cavity of the mounting groove through a connecting spring, and the vertical section of one side wall of the limiting block, which is far away from the connecting spring, is arc-shaped.
Preferably, the sampling box comprises a two-component box body, a connector is arranged on the front side wall of the front side box body, an observation window is arranged in the cavity of the connector, the back side walls of the front side box body and the back side wall of the back side box body are respectively provided with an inserting block, slots matched with the inserting blocks are uniformly arranged on the front side wall of the back side box body, the inserting blocks are inserted into the cavities of the slots,
wherein, and lateral wall fixed mounting has two sets of connecting pieces before the box top is divided to the rear side, and the connecting piece bottom wall laminates with preceding lateral branch box top wall mutually, and the lateral wall spiro union has fixing bolt before the connecting piece top, and just preceding lateral branch box top wall has seted up the screw, and the fixing bolt bottom runs through the connecting piece and extends to in the inner chamber of screw.
Compared with the prior art, the invention has the beneficial effects that:
1. the device is telescopically buffered by the buffer spring, so that the pressure on the screen can be reduced when the pressure on the screen is increased due to more impurities accumulated above the screening assembly, the probability of bending deformation of the screen is reduced, the problem that the filtering blocking quality is influenced due to the fact that the aperture of the screen is enlarged is avoided, and the service life of the sampling equipment is ensured;
2. impurity piles up in screening subassembly top, makes the buffer spring compression, and touch switch can be pressed to the direction slider, makes the electro-magnet circular telegram produce magnetic force and magnetic path and adsorbs mutually to rolling subassembly work, the pulling stay cord makes the upside screen cloth divide into two parts and removes respectively to two sets of incasement chambeies that receive and release, takes away the screen cloth of upside, makes the screen cloth in the middle directly be in the top and carry out work, further guarantees that the screen cloth that the screening was used for can not deform.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the connection between the sampling device and the screening mechanism according to the present invention;
FIG. 3 is a schematic cross-sectional view of the screening mechanism of the present invention;
FIG. 4 is an enlarged view of the structure at A of the present invention;
FIG. 5 is a schematic view of the connection structure of the guide slider and the support block according to the present invention.
In the figure: 1. a detection device; 2. a sampling device; 3. a screening mechanism; 31. a storage box; 32. a screening component; 321. screening a screen; 33. a buffer spring; 34. a guide block; 341. a moving block; 35. an electromagnet; 36. a winding component; 37. pulling a rope; 38. a guide groove; 39. a guide slider; 310. mounting blocks; 311. a support block; 312. mounting a rod; 313. fixing the bolt; 314. a limiting block; 315. and placing the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a technical scheme that: an apparatus for determining the content of non-methane total hydrocarbons in ambient air, see FIGS. 1 and 2, comprises,
the method comprises the following steps that 1, a detection device 1 is used for separating methane in detected gas by utilizing a chromatographic separation technology and detecting the methane by adopting a hydrogen flame ionization detector independently, meanwhile, total hydrocarbon in the detected gas is detected by adopting the hydrogen flame ionization detector, and a non-methane total hydrocarbon concentration value is obtained after the methane concentration is subtracted from the total hydrocarbon concentration; and the number of the first and second groups,
the sampling device 2 comprises a sampling box, a screening mechanism 3 and an air extracting device, wherein the sampling box is arranged on the top wall of the detection device 1, the inner cavity of the sampling box is communicated with an air inlet of the detection device 1, the air extracting device is arranged at the bottom of the inner cavity of the sampling box, the screening mechanism 3 is arranged at the top of the inner cavity of the sampling box, the air extracting device is a device capable of extracting external air into the sampling box and enabling the air to enter the detection device 1, the sampling box is composed of two box bodies which can be separated,
wherein, the screening mechanism 3 comprises a screening component 32 which is arranged at the top of the inner cavity of the sampling box in a sliding way;
referring to fig. 3 and 4, the left and right side walls of the screening component 32 are both provided with guide sliders 39, the inner walls of the left and right sides of the sampling box are both provided with guide grooves 38, the guide sliders 39 are slidably inserted into the inner cavities of the guide grooves 38, and a buffer spring 33 is installed between the bottom wall of the guide sliders 39 and the bottom of the inner cavity of the guide grooves 38 and is telescopically buffered by the buffer spring 33, so that the pressure on the screen 321 can be reduced when the pressure on the screen 321 is increased due to more impurities accumulated above the screening component 32, and the probability of bending deformation of the screen 321 is reduced;
referring to fig. 3, the screening assembly 32 includes three sets of screens 321 distributed in sequence from top to bottom, the left and right side walls of the lower screen 321 are respectively connected with one side wall of the two sets of guide sliders 39 close to each other, the upper two sets of screens 321 are composed of two sets of screens, openings are respectively formed in the inner walls of the left and right sides of the sampling box, the outer walls of the left and right sides of the sampling box are respectively provided with the retractable box 31, and the inner cavity of the retractable box 31 is communicated with the inner cavity of the sampling device 2 through the openings;
referring to fig. 3 and 4, a winding assembly 36 is mounted on a side wall of the storage box 31 far away from the sampling box, the winding assembly 36 is composed of a motor and a winding rod, the motor drives the winding rod to rotate, so that a pull rope 37 is wound on the outer wall of the winding rod, when the motor stops working, the pull rope 37 can pull the winding rod to rotate, the top of an inner cavity of the storage box 31 is slidably connected with a guide block 34 through an elastic part, the pull rope 37 is mounted between one side wall of the guide block 34 far away from the sampling box and an output shaft of the winding assembly 36, an electromagnet 35 is mounted at one end of the guide block 34 far away from the pull rope 37, magnetic blocks are mounted on left and right side walls of two groups of screens 321 on the upper side, and the magnetic blocks are opposite to magnetic poles of the electromagnet 35 and can generate attraction force;
referring to fig. 4, a moving groove is formed in a side wall of the guide block 34 close to the electromagnet 35, an inner cavity of the moving groove is slidably connected with the moving block 341 through a tension spring, and a side wall of the moving block 341 far from the guide block 34 is fixedly connected with an outer wall of the electromagnet 35;
referring to fig. 3 and 4, the bottom of the inner cavity of the guide groove 38 is provided with the mounting rod 312, the top end of the mounting rod 312 is provided with the touch switch, the touch switch is located below the guide slider 39 and electrically connected to the electromagnet 35 and the winding assembly 36, respectively, impurities are accumulated above the screening assembly 32, so that the buffer spring 33 is compressed, the screening assembly 32 moves down, when the moving down range is large, the guide slider 39 presses the touch switch, the electromagnet 35 is electrified to generate magnetic force to be adsorbed to the magnetic blocks, and the winding assembly 36 works, the pull rope 37 is pulled to separate the upper screen 321 into two parts to move respectively to the inner cavities of the two sets of the outer storage boxes 31, the upper screen 321 is drawn away, so that the middle screen 321 is directly located above to work, the impurities are accumulated above the middle screen 321, the pressure is reduced, the buffer spring 33 drives the screening assembly 32 to move up, the rolling component 36 and the electromagnet 35 stop working, so that the screen cloth entering the inner cavity of the storage box 31 falls to the bottom of the inner cavity of the storage box 31, and then the guide block 34 drives the electromagnet 35 to reset;
referring to fig. 4, a mounting hole is formed at a connecting portion of the guide groove 38 and the mounting rod 312, the mounting rod 312 is slidably inserted into an inner cavity of the mounting hole, a fixing bolt 313 is screwed on an inner wall of the sampling box, and the fixing bolt 313 extends into the inner cavity of the mounting hole and is attached to an outer wall of the mounting rod 312.
Example 2:
referring to fig. 4 and 5, on the basis of embodiment 1, a mounting block 310 is installed on a side wall of the left and right guide sliders 39 close to each other, a mounting opening is formed on a top wall of the mounting block 310, an inner cavity of the mounting opening is slidably connected with a supporting block 311 through an elastic element, a top wall of the supporting block 311 is fixedly connected with a bottom wall of the lower screen 321, after the upper screen 321 is pulled away, the weight of the whole screening assembly 32 is reduced, so that the supporting block 311 drives the screening assembly 32 to move upwards, when the screening assembly 32 is pressed downwards again, the middle screen 321 can correspond to the electromagnet 35, it is ensured that the electromagnet 35 can adsorb and fix the screen 321 again, a transverse mounting groove 315 is formed on an outer wall of the supporting block 311, a limiting block 314 is inserted into an inner cavity of the mounting groove 315, the limiting block 314 is slidably installed in the inner cavity of the mounting groove 315 through a connecting spring, and a vertical cross section of a side wall of the limiting block 314 away from the connecting spring is arc-shaped, the supporting block 311 moves upwards, so that the limiting block 314 moves above the mounting block 310, and under the action of the connecting spring, the limiting block 314 moves outwards to contact with the top of the mounting block 310, so that the supporting block 311 does not move downwards after moving upwards on the screening component 32, and the screen 321 in the middle can be drawn away;
referring to fig. 1 and 2, the sampling box comprises two component box bodies, a connector is disposed on the front side wall of the front side component box body, an observation window is disposed in the cavity of the connector, and insertion blocks are mounted on the rear side wall of the front side component box body, slots matched with the insertion blocks are uniformly disposed on the front side wall of the rear side component box body, and the insertion blocks are inserted into the cavities of the slots,
the front side wall of the top of the rear side branch box body is fixedly provided with two groups of connecting pieces, the bottom wall of each connecting piece is attached to the top wall of the front side branch box body, the front side wall of the top of each connecting piece is connected with a fixing bolt in a threaded manner, the top wall of the front side branch box body is provided with a screw hole, and the bottom end of each fixing bolt penetrates through each connecting piece and extends into an inner cavity of the screw hole;
compared with the embodiment 1, the installation block 310, the supporting block 311 and other parts are added, after the upper screen 321 is pulled away, the supporting block 311 carries the screening assembly 32 to move upwards, when the screening assembly 32 is pressed down again, the middle screen 321 can correspond to the electromagnet 35, and the electromagnet 35 can ensure that the screen 321 can be adsorbed and fixed again.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A device for measuring the content of non-methane total hydrocarbons in ambient air is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a detection device (1); and the number of the first and second groups,
the sampling device (2) comprises a sampling box, a screening mechanism (3) and an air extracting device, the sampling box is arranged on the top wall of the detection device (1), the inner cavity of the sampling box is communicated with an air inlet of the detection device (1), the air extracting device is arranged at the bottom of the inner cavity of the sampling box, the screening mechanism (3) is arranged at the top of the inner cavity of the sampling box,
wherein the screening mechanism (3) comprises a screening assembly (32) slidably mounted at the top of the sampling box cavity.
2. The apparatus of claim 1, wherein the apparatus comprises:
the left side wall and the right side wall of the screening component (32) are both provided with guide sliding blocks (39), the inner walls of the left side wall and the right side wall of the sampling box are both provided with guide grooves (38), the guide sliding blocks (39) are inserted into the inner cavities of the guide grooves (38) in a sliding manner,
and a buffer spring (33) is arranged between the bottom wall of the guide sliding block (39) and the bottom of the inner cavity of the guide groove (38).
3. The apparatus for determining the content of non-methane total hydrocarbons in ambient air according to claim 2, wherein:
the screening component (32) comprises three groups of screens (321) which are distributed from top to bottom in sequence, the left side wall and the right side wall of the screen (321) at the lower side are respectively connected with one side wall of two groups of guide sliding blocks (39) which are close to each other,
wherein, the upside is two sets of screen cloth (321) comprise two components screen cloth, and the opening has all been seted up to the sampling box left and right sides inner wall, and the sampling box left and right sides outer wall all installs and receive and release case (31), and receive and release case (31) inner chamber through opening and sampling equipment (2) inner chamber intercommunication.
4. The apparatus of claim 3, wherein the apparatus comprises:
a winding component (36) is installed on one side wall of the storage box (31) far away from the sampling box, the top of the inner cavity of the storage box (31) is connected with a guide block (34) in a sliding mode through an elastic part, a pull rope (37) is installed between one side wall of the guide block (34) far away from the sampling box and an output shaft of the winding component (36), an electromagnet (35) is installed at one end of the guide block (34) far away from the pull rope (37), and magnetic blocks are installed on the left side wall and the right side wall of the upper two groups of screen meshes (321),
wherein, rolling component (36) include box, motor and winding rod, and the winding rod rotates and installs in the inner chamber of box, and the motor is installed on the back lateral wall of box, and motor front side output shaft and winding rod rear end fixed connection, the one end winding that guide block (34) were kept away from in stay cord (37) is on the outer wall of winding rod.
5. The apparatus of claim 4, wherein the apparatus comprises:
a moving groove is formed in one side wall, close to the electromagnet (35), of the guide block (34), a moving block (341) is inserted into an inner cavity of the moving groove in a sliding mode, a tension spring is installed between the inner cavity of the moving groove and the outer wall of the moving block, and one side wall, far away from the guide block (34), of the moving block (341) is fixedly connected with the outer wall of the electromagnet (35).
6. The apparatus of claim 4, wherein the apparatus comprises:
the bottom of the inner cavity of the guide groove (38) is provided with an installation rod (312), the top end of the installation rod (312) is provided with a touch switch,
the touch switch is located below the guide sliding block (39), and the touch switch is electrically connected with the electromagnet (35) and the winding assembly (36) respectively.
7. The apparatus of claim 6, wherein the apparatus comprises:
a mounting hole is arranged at the connecting part of the guide groove (38) and the mounting rod (312), the mounting rod (312) is inserted into the inner cavity of the mounting hole in a sliding way,
wherein, and sampling box inner wall spiro union has fixing bolt (313), fixing bolt (313) extend to in the inner chamber of mounting hole and laminate mutually with installation pole (312) outer wall.
8. The apparatus of claim 4, wherein the apparatus comprises:
the left side and the right side are the installation piece (310) all installed to the mutual lateral wall that is close to of guide slider (39), the installing port has been seted up to installation piece (310) top wall, and the installing port inner chamber runs through and has been inserted supporting shoe (311), supporting shoe (311) pass through elastic element slidable mounting in the inner chamber of installing port, supporting shoe (311) top wall and downside screen cloth (321) bottom wall fixed connection.
9. The apparatus for determining the content of non-methane total hydrocarbons in ambient air according to claim 8, wherein:
a transverse mounting groove (315) is formed in the outer wall of the supporting block (311), a limiting block (314) is inserted into the inner cavity of the mounting groove (315), the limiting block (314) is slidably mounted in the inner cavity of the mounting groove (315) through a connecting spring,
wherein, and a vertical cross section of a side wall of the limiting block (314) far away from the connecting spring is arc-shaped.
10. The apparatus of claim 1, wherein the apparatus comprises:
the sampling box comprises two component box bodies, a connector is arranged on the front side wall of the front side box body, an observation window is arranged in the cavity of the connector, the back side walls of the front side box body and the back side box body are respectively provided with an inserting block, slots matched with the inserting blocks are uniformly arranged on the front side wall of the back side box body, the inserting blocks are inserted in the cavities of the slots,
wherein, and lateral wall fixed mounting has two sets of connecting pieces before the box top is divided to the rear side, and the connecting piece bottom wall laminates with preceding lateral branch box top wall mutually, and the lateral wall spiro union has fixing bolt before the connecting piece top, and just preceding lateral branch box top wall has seted up the screw, and the fixing bolt bottom runs through the connecting piece and extends to in the inner chamber of screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111009877.3A CN113804509B (en) | 2021-08-31 | 2021-08-31 | A device for measuring the content of non-methane total hydrocarbons in ambient air |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111009877.3A CN113804509B (en) | 2021-08-31 | 2021-08-31 | A device for measuring the content of non-methane total hydrocarbons in ambient air |
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| CN113804509A true CN113804509A (en) | 2021-12-17 |
| CN113804509B CN113804509B (en) | 2023-11-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160363573A1 (en) * | 2015-06-11 | 2016-12-15 | Live Fresh Inc. | Non-methane total hydrocarbons analysis apparatus and method for the same |
| CN207270828U (en) * | 2017-09-26 | 2018-04-27 | 天津市疾病预防控制中心 | Sample bottle filtration apparatus |
| CN207585974U (en) * | 2017-11-25 | 2018-07-06 | 闫世明 | Atmospheric particulates signature analysis sampling apparatus |
| CN211718214U (en) * | 2020-03-26 | 2020-10-20 | 广东杰信检验认证有限公司 | Novel high-efficient analysis of non-methane total hydrocarbon in air device |
| CN113041678A (en) * | 2021-02-07 | 2021-06-29 | 苏州中车建设工程有限公司 | Novel drainage is filtered device |
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2021
- 2021-08-31 CN CN202111009877.3A patent/CN113804509B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160363573A1 (en) * | 2015-06-11 | 2016-12-15 | Live Fresh Inc. | Non-methane total hydrocarbons analysis apparatus and method for the same |
| CN207270828U (en) * | 2017-09-26 | 2018-04-27 | 天津市疾病预防控制中心 | Sample bottle filtration apparatus |
| CN207585974U (en) * | 2017-11-25 | 2018-07-06 | 闫世明 | Atmospheric particulates signature analysis sampling apparatus |
| CN211718214U (en) * | 2020-03-26 | 2020-10-20 | 广东杰信检验认证有限公司 | Novel high-efficient analysis of non-methane total hydrocarbon in air device |
| CN113041678A (en) * | 2021-02-07 | 2021-06-29 | 苏州中车建设工程有限公司 | Novel drainage is filtered device |
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| CN113804509B (en) | 2023-11-03 |
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