CN110926887A - Portable sampling device for detecting atmospheric pollution degree - Google Patents
Portable sampling device for detecting atmospheric pollution degree Download PDFInfo
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- CN110926887A CN110926887A CN201911161836.9A CN201911161836A CN110926887A CN 110926887 A CN110926887 A CN 110926887A CN 201911161836 A CN201911161836 A CN 201911161836A CN 110926887 A CN110926887 A CN 110926887A
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- fixedly connected
- ring
- filter
- subassembly
- air
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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
- G01N1/24—Suction devices
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- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- 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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
Abstract
The invention discloses a portable sampling device for detecting atmospheric pollution degree, and relates to the technical field of environmental engineering. Including the subassembly of breathing in and hold the subassembly, the subassembly of breathing in is including being responsible for, and the both sides of being responsible for are respectively through hoop fastening connection have left block and right block, are equipped with first filter, go-between, cartridge filter and second filter in proper order by left to right in the subassembly of breathing in, and trachea fixedly connected with holds the subassembly in one side of right block, holds the subassembly and includes the gasbag, the equal fixedly connected with backup pad in top and the bottom of gasbag inner wall. Through setting up the cartridge filter, combine first filter and second filter, first filter and left block cap, second filter and right block cap form independent cavity, combine to be responsible for, will breathe in the subassembly and constitute three cavity, can carry out tertiary filtration with the impurity in the inspiratory air before getting into the gasbag, open the subassembly of breathing in afterwards and take out the impurity of three kinds of different particle sizes, when avoiding blockking up the gasbag, be convenient for improve the variety of sample.
Description
Technical Field
The invention relates to the technical field of environmental engineering, in particular to a portable sampling device for detecting atmospheric pollution degree.
Background
The atmospheric sampling refers to a method for collecting a pollutant sample or a polluted air sample in the atmosphere, and the collection method is a method for enabling a large amount of air to pass through a liquid absorbent or a solid adsorbent to enrich pollutants with lower concentration in the atmosphere, and when the concentration of a component to be measured in the atmosphere is higher or an analysis method is very sensitive, a direct sampling method is adopted, common sampling containers comprise an injector, a plastic bag, a plurality of fixed containers and the like, and the measured instantaneous concentration or the average concentration in a short time of the pollutants in the atmosphere is obtained, but the existing atmospheric sampling device has the following defects in the specific use process:
among the prior art, when gathering, current collection mode is generally for directly in the container with gas suction, when air pollution degree is extremely unsatisfactory, contain equivalent content's solid particle in the air, the general diameter of current gas container output and input end is less, more solid impurity exists the hidden danger that blocks up the gas container subassembly when extracting the air, portable gas container generally is soft sacculus, at the expanded start in-process of gasbag, the air current is torrential, make the intraductal air current inner circle of device suction position and outer lane velocity of flow different, make the composition of inspiratory air and in the air have certain difference, influence the accuracy of sampling.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a portable sampling device for detecting the atmospheric pollution degree, which has the advantages of avoiding blocking an air bag, improving the sampling diversity, avoiding the difference of the flow rates of an inner ring and an outer ring of an air flow, ensuring that the composition of sucked air is not different from that of components in the air, ensuring the sampling accuracy and the like, and solves the problem that the sampling accuracy is influenced because the hidden danger of blocking a gas container assembly exists in more solid impurities and the composition of the sucked air is different from that of the components in the air.
(II) technical scheme
In order to realize the purposes of avoiding blocking the air bag, being convenient for improving the sampling diversity, avoiding different flow rates of an inner ring and an outer ring of the airflow, ensuring that the composition of the sucked air is not different from that of components in the air and ensuring the sampling accuracy, the invention provides the following technical scheme: the utility model provides an atmospheric pollution degree detects personal sampling device, includes the subassembly of breathing in and holds the subassembly, the subassembly of breathing in is including being responsible for, the both sides of being responsible for are connected with left block and right block through hoop fastening respectively, be equipped with first filter, go-between, cartridge filter and second filter from left to right in the subassembly of breathing in proper order, trachea fixedly connected with holds the subassembly in one side of right block, it includes the gasbag to hold the subassembly, the top and the equal fixedly connected with backup pad in bottom of gasbag inner wall, fixedly connected with pressure spring between the backup pad, one side fixedly connected with outlet valve of gasbag, the inner wall fixedly connected with steady flow subassembly of left block, the steady flow subassembly includes eight to ring sum main ring, eight to ring sum main ring is through rigid connection cloth fixed connection.
As a preferred technical solution of the present invention, the first filter plate is fixedly connected to the inner wall opening side of the left cap, and the second filter plate is fixedly connected to the inner wall opening side of the right cap.
As a preferred technical solution of the present invention, the connecting ring is fixedly connected to one side of the inner wall of the main tube, the connecting ring is a ring body with a diameter decreasing from left to right, and the filter cartridge is fixedly connected to the side of the connecting ring with the smallest diameter.
As a preferable technical solution of the present invention, a one-way valve is fixedly connected to the air pipe between the air suction module and the accommodating module.
As a preferable technical scheme of the invention, the eight-way ring is formed by fixedly connecting eight long U-shaped ring bodies in opposite directions, and the main ring is fixedly connected with one side of the inner wall of the left cap.
As a preferred technical scheme, the one-way valve comprises a valve ring fixedly connected with an air pipe, an inner ring is fixedly connected with an inner ring, the inner ring of the inner ring is a jack with the diameter gradually reduced from left to right, a hollow insertion rod is inserted in the jack, one end of the hollow insertion rod is fixedly connected with an umbrella-shaped cover, one side of the inner ring is provided with an umbrella-shaped flange matched with the concave side of the umbrella-shaped cover, both ends of the umbrella-shaped cover body are provided with vent holes, and the center of the side face of the umbrella-shaped cover is in lap joint with the inner ring of the air pipe.
As a preferable technical scheme of the invention, one side of the outlet valve of the containing component is fixedly connected with a collecting component, and the structure and the size of the collecting component are the same as those of the containing component.
(III) advantageous effects
Compared with the prior art, the invention provides a portable sampling device for detecting the atmospheric pollution degree, which has the following beneficial effects:
1. this personal sampling device of atmosphere pollution degree detection, through setting up the cartridge filter, combine first filter and second filter, first filter and left cap, second filter and right cap form independent cavity, combine to be responsible for, will breathe in the subassembly and constitute three cavity, can carry out tertiary filtration with the impurity in the inspiratory air before getting into the gasbag, open the subassembly of breathing in afterwards and take out the impurity of three kinds of different particle sizes, when avoiding blockking up the gasbag, be convenient for improve the variety of sample.
2. The portable sampling device for detecting the atmospheric pollution degree is characterized in that a flow stabilizing assembly is arranged, after gas enters from a main ring, the gas is divided into uniform gas by an eight-way ring through a connecting cloth, the flow velocity difference between an inner ring and an outer ring of the gas flow is avoided, the situation that the sucked air composition is not different from the composition of components in the air is guaranteed, the sampling accuracy is guaranteed, by arranging a one-way valve, in the expansion process of the gas bag, due to the fact that the tightness of the gas bag body is elastically changed by relaxation and expansion in the expansion process of the soft gas bag, when the gas flow velocity in the device is changed, the hollow insertion rods with the diameters sequentially reduced from left to right are combined, the flow velocity is convenient to combine, an umbrella-shaped cover is blown, the hollow insertion rods and the insertion holes are inserted in different degrees, the gas flow passing through is buffered, and the air flow velocity change caused by the elastic change of the, the difference between the particles contained in the sucked gas and the outside caused by different flow rates of the fluid is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the flow stabilization assembly of the present invention;
FIG. 3 is a perspective view of a flow stabilization assembly of the present invention;
fig. 4 is a schematic structural view of the check valve of the present invention.
In the figure: 1. a getter assembly; 11. a main pipe; 12. a left cap; 13. a right cap; 14. a first filter plate; 15. a connecting ring; 16. a filter cartridge; 17. a second filter plate; 2. a containment assembly; 21. an air bag; 22. a support plate; 23. a pressure spring; 24. a one-way valve; 241. a valve ring; 242. an inner ring; 2421. an umbrella-shaped flange; 243. an umbrella-shaped cover; 244. hollowing out the inserted rod; 25. an outlet valve; 3. a flow stabilizing assembly; 31. a main ring; 32. an eight-way ring; 33. connecting cloth; 4. and a collection assembly.
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.
Referring to fig. 1-4, an atmospheric pollution level detection portable sampling device comprises an air suction assembly 1 and a containing assembly 2, wherein the air suction assembly 1 comprises a main pipe 11, two sides of the main pipe 11 are respectively and fixedly connected with a left cap 12 and a right cap 13 through hoops, a first filter plate 14, a connecting ring 15, a filter cartridge 16 and a second filter plate 17 are sequentially arranged in the air suction assembly 1 from left to right, one side of the right cap 13 is fixedly connected with the containing assembly 2 through an air pipe, the containing assembly 2 comprises an air bag 21, the top and the bottom of the inner wall of the air bag 21 are both fixedly connected with supporting plates 22, a pressure spring 23 is fixedly connected between the supporting plates 22, one side of the air bag 21 is fixedly connected with an outlet valve 25, the inner wall of the left cap 12 is fixedly connected with a flow stabilizing assembly 3, the flow stabilizing assembly 3 comprises an eight-way ring 32 and a main ring, the eight-way ring 32 and the main ring 31 are fixedly connected by a rigid connecting cloth 33.
Specifically, the first filter plate 14 is fixedly connected to the inner wall opening side of the left cap 12, the second filter plate 17 is fixedly connected to the inner wall opening side of the right cap 13, the connection ring 15 is fixedly connected to one side of the inner wall of the main tube 11, the connection ring 15 is a ring body with a diameter which is reduced from left to right in sequence, the filter cartridge 16 is fixedly connected to the diameter minimum side of the connection ring 15, the one-way valve 24 is fixedly connected to the air tube between the air suction component 1 and the accommodating component 2, the air bag is supported by the support plate 22 after the pressure spring 23 is loosened, the air flow in the device starts to flow, when the air flow enters the left cap 12, the air flow is divided into uniform air by the eight-way ring 32 through the connection cloth 33, the impurities with larger particle size are controlled in the left cap 12 by the first filter plate 14 and flow in sequence to the right, the impurities with middle particle size are controlled in the main tube 11, and the impurities, and then through the trachea into the balloon 21.
Specifically, the eight-way ring 32 is formed by fixedly connecting eight long U-shaped ring bodies in opposite directions, and the main ring 31 is fixedly connected with one side of the inner wall of the left cap 12.
In the present embodiment, the flow of the air in the main ring 31 is changed from a cylindrical shape to a flower shape in the course of passing to the eight-way ring 32.
Specifically, the check valve 24 includes a valve ring 241 fixedly connected with the air pipe, an inner ring 242 is fixedly connected with an inner ring of the valve ring 241, an inner ring of the inner ring 242 is a jack with a diameter decreasing from left to right, a hollow insertion rod 244 is inserted into the jack, one end of the hollow insertion rod 244 is fixedly connected with an umbrella-shaped cover 243, one side of the inner ring 242 is provided with an umbrella-shaped flange 2421 matched with the concave side of the umbrella-shaped cover 243, both ends of the body of the umbrella-shaped cover 243 are provided with vent holes, and the center of the side surface of the umbrella-shaped cover 243 is in lap joint with the inner ring of the air pipe.
In this embodiment, the hollow-out insertion rod 244 and the inner ring 242 have different insertion degrees, i.e., different gaps, so that the flowing fluid has different flow rates, the air bag 21 is convenient to buffer the change of the air flow rate caused by the elastic change of the tension generated by the relaxation of the body of the air bag, and the difference between the particles contained in the sucked gas and the outside caused by the different flow rates of the fluid is avoided.
In particular, collection assembly 4 is fixedly connected to one side of outlet valve 24 of containing assembly 2, and collection assembly 4 has the same structure and size as containing assembly 2.
In this embodiment, after using to hold subassembly 2 to gather, when needing to send the gas of gathering to the detection, be in the pressure spring 23 that gathers subassembly 4 and compress tightly the compression state, when needs gather gas, the backup pad 22 props up the gasbag after loosening pressure spring 23, and the interior air current of device begins to flow and flows to gathering the subassembly.
The working principle and the using process of the invention are as follows: when the device is used, when air is not sucked, the pressure spring 23 is in a compression state, when gas needs to be collected, the supporting plate 22 supports the air bag after the pressure spring 23 is loosened, air flow in the device starts to flow, when the device enters the left cap 12, the air flow is divided into uniform gas by the eight-way ring 32 through the connecting cloth 33, impurities with thicker grain diameters are controlled in the left cap 12 by the first filter plate 14 and flow rightwards in sequence, impurities with middle grain diameters are controlled in the main pipe 11, impurities with smaller grain diameters in the same principle are controlled in the right cap 13 by the first filter plate 14 and then enter the air bag 21 through the air pipe, during expansion of the air bag 21, because the degree of the air bag 21 body is changed elastically by relaxation and tension in the expansion process of the soft air bag 21, when the flow velocity of the gas in the device is changed, the hollow inserted rod 244 with the diameters being reduced from left to right in sequence is combined, so that the umbrella-shaped cover 243 is blown conveniently combined with the, the hollow insert rod 244 is inserted into the insert holes in different degrees, and the buffer is buffered through the gas flow.
In summary, the portable sampling device for detecting atmospheric pollution degree, by arranging the filter cylinder 16, combining the first filter plate 14 and the second filter plate 17, forming independent cavities by the first filter plate 14 and the left cap 12, the second filter plate 17 and the right cap 13, combining the main pipe 11, forming the air suction component 1 into three cavities, performing three-stage filtration on the impurities in the sucked air before entering the air bag 21, opening the air suction component 1 after that to take out three impurities with different particle sizes, avoiding blocking the air bag 21, and simultaneously facilitating improvement of sampling diversity, by arranging the flow stabilizing component 3, after the air enters from the main ring 31, the air is divided into uniform air by the connecting cloth 33 through the eight-way ring 32, avoiding different flow rates of the inner ring and the outer ring of the air flow, ensuring that the composition of the sucked air is not different from that of the components in the air, ensuring the sampling accuracy, by arranging the one-way valve 24, in gasbag 21 expansion in-process, because soft gasbag 21 inflation expansion in-process gasbag 21 body rate of tension produces elastic change by relaxation change, when making the gas flow velocity of flow in the device change, combine left and right fretwork inserted bar 244 that the diameter reduces in proper order, be convenient for combine the velocity of flow, blow umbrella shape lid 243, fretwork inserted bar 244 and the different degree grafting of jack, will cushion through gas flow, be convenient for the buffering because gasbag 21 body rate of tension produces the air flow rate change that elastic change brought by relaxation change, it has difference to some extent with the external world to avoid the fluid velocity of flow to differ the institute the gas that absorbs that brings.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
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 (7)
1. The utility model provides an atmospheric pollution degree detects personal sampling device, includes inspiratory component (1) and holds subassembly (2), its characterized in that: the air suction assembly (1) comprises a main pipe (11), the two sides of the main pipe (11) are respectively and fixedly connected with a left cap (12) and a right cap (13) through hoops, a first filter plate (14), a connecting ring (15), a filter cylinder (16) and a second filter plate (17) are sequentially arranged in the air suction assembly (1) from left to right, one side of the right cap (13) is fixedly connected with a containing assembly (2) through an air pipe, the containing assembly (2) comprises an air bag (21), the top and the bottom of the inner wall of the air bag (21) are both fixedly connected with supporting plates (22), a pressure spring (23) is fixedly connected between the supporting plates (22), one side of the air bag (21) is fixedly connected with an outlet valve (25), the inner wall of the left cap (12) is fixedly connected with a flow stabilizing assembly (3), the flow stabilizing assembly (3) comprises an eight-direction ring (32) and a main ring, the eight-direction ring (32) and the main ring (31) are fixedly connected through a hard connecting cloth (33).
2. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: first filter (14) fixed connection is in the inner wall opening side of left block (12), second filter (17) fixed connection is in the inner wall opening side of right block (13).
3. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: the connecting ring (15) is fixedly connected to one side of the inner wall of the main pipe (11), the connecting ring (15) is a ring body with the diameter gradually reduced from left to right, and the filter cartridge (16) is fixedly connected to the diameter minimum side of the connecting ring (15).
4. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: and a one-way valve (24) is fixedly connected to an air pipe between the air suction assembly (1) and the accommodating assembly (2).
5. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: the eight-direction ring (32) is formed by fixedly connecting eight long U-shaped ring bodies in opposite directions, and the main ring (31) is fixedly connected with one side of the inner wall of the left cap (12).
6. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: check valve (24) include with trachea fixed connection's valve ring (241), inner circle fixedly connected with inner ring (242) of valve ring (241), inner ring (242) inner circle is for from left to right jack that the diameter reduces in proper order, and has pegged graft in the jack and have fretwork inserted bar (244), the one end fixedly connected with umbrella shape lid (243) of fretwork inserted bar (244), umbrella-shaped flange (2421) with the indent side adaptation of umbrella shape lid (243) is seted up to one side of inner ring (242), the air vent has all been seted up at the both ends of umbrella shape lid (243) body, the side center department of umbrella shape lid (243) and tracheal inner circle overlap joint.
7. The atmospheric pollution level detection on-board sampling device of claim 1, wherein: one side of an outlet valve (24) of the accommodating component (2) is fixedly connected with an acquisition component (4), and the structure and the size of the acquisition component (4) are the same as those of the accommodating component (2).
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| CN201911161836.9A CN110926887B (en) | 2019-11-25 | 2019-11-25 | Portable sampling device for detecting atmospheric pollution degree |
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| CN201911161836.9A CN110926887B (en) | 2019-11-25 | 2019-11-25 | Portable sampling device for detecting atmospheric pollution degree |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111855323A (en) * | 2020-07-29 | 2020-10-30 | 中央民族大学 | Solid phase gap gas sampling rod |
| CN113008633A (en) * | 2021-03-08 | 2021-06-22 | 上海翌臻环保科技有限公司 | Storage device for environment detection sampling |
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| CN113008633A (en) * | 2021-03-08 | 2021-06-22 | 上海翌臻环保科技有限公司 | Storage device for environment detection sampling |
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