CN114540177A - Impact type air sampler - Google Patents

Impact type air sampler Download PDF

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Publication number
CN114540177A
CN114540177A CN202210447601.1A CN202210447601A CN114540177A CN 114540177 A CN114540177 A CN 114540177A CN 202210447601 A CN202210447601 A CN 202210447601A CN 114540177 A CN114540177 A CN 114540177A
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limiting plate
sampling
sampling body
air
inner cavity
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CN202210447601.1A
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CN114540177B (en
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不公告发明人
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To Microbial Intelligent Technology Xiamen Co ltd
Zhimei Times Biological Intelligent Technology Beijing Co ltd
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To Microbial Intelligent Technology Xiamen Co ltd
Zhimei Times Biological Intelligent Technology Beijing Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/34—Internal compartments or partitions
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M37/00—Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination
    • C12M37/04—Seals
    • 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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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Biomedical Technology (AREA)
  • Sustainable Development (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Clinical Laboratory Science (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

The invention discloses an impact type air sampler, which comprises a sampling body and a limiting mechanism, wherein an air suction pipe works to enable external air to enter an inner cavity of the sampling body through an air inlet pipe, the air entering the sampling body through the air inlet pipe can impact sampling liquid, when the sampling liquid splashes upwards, part of the splashed sampling liquid is blocked by a limiting element and flows back to the inner cavity of the sampling body, and part of the splashed sampling liquid falls to the top of the limiting element. Meanwhile, the impact type air sampler can meet the sampling requirement under the condition of high air flow rate, and is beneficial to improving the sampling rate of air microorganisms and improving the accuracy of sampling results.

Description

Impact type air sampler
Technical Field
The invention relates to the technical field of air sampling detection equipment and peripheral supporting facilities thereof, in particular to an impact type air sampler.
Background
Microorganisms in human, animal and plant bodies and soil can be dispersed in the air by droplets, dust, and the like, so that the air contains a certain kind and number of microorganisms. There are generally no pathogenic microorganisms in the air theoretically, but aerosols of pathogenic microorganisms are often suspended in the air near hospitals, veterinary hospitals and livestock houses, and healthy people or animals are often infected by inhalation. Air contaminated by pathogenic microorganisms can often be a source or vehicle of contamination, causing epidemic disease. Therefore, the detection of airborne microorganisms is of great significance for the prevention and control of infectious diseases and the hygiene supervision and protection of the environment.
The air sampler is an important tool in the air microorganism detection process, and has a variety of types, wherein the impact air sampler collects microorganism particles in air in a sampling liquid in a jet airflow manner. In the sampling process, after the sampling liquid is added into the sampler, air suction power is started, air enters from an air inlet pipe of the sampler, microbial particles in the air impact the sampling liquid of the sampler, and the microbial particles are captured due to the adhesion of the liquid.
The common impact type air sampler has larger limit to the air flow speed when in use, and when the air flow speed is larger, the sampling liquid in the sampler is easy to splash upwards under the impact of high-speed air flow and is pumped out through the air pumping port, so that the loss of the sampling liquid and the air sample is caused, and the long-time sampling of air microorganisms is not facilitated.
Therefore, how to change the current situation that the sampling liquid and the air sample are easily lost in the sampling process of the impact air sampler in the prior art becomes a problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide an impact type air sampler, which aims to solve the problems in the prior art, reduce the loss of sampling liquid and an air sample and improve the accuracy of a sampling result.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an impact air sampler, comprising:
the sampling device comprises a sampling body, wherein an inner cavity of the sampling body can contain sampling liquid; the sampling body is connected with an exhaust tube and an air inlet tube, the exhaust tube is communicated with the top of an inner cavity of the sampling body, and the air inlet tube is communicated with the bottom of the inner cavity of the sampling body;
the limiting mechanism is arranged in the inner cavity of the sampling body and comprises a limiting element, the limiting element is obliquely arranged towards the bottom of the sampling body, the limiting element divides the inner cavity of the sampling body into an upper cavity and a lower cavity, the upper cavity is communicated with the lower cavity, and one end of an outlet of the air inlet pipe is communicated with the lower cavity.
Preferably, the limiting element comprises a first limiting plate, the first limiting plate is of a hollow round table-shaped structure, the smaller end of the diameter of the first limiting plate is connected with the air inlet pipe, and the larger end of the diameter of the first limiting plate faces the bottom of the inner cavity of the sampling body.
Preferably, the intake pipe with the coaxial setting of sampling body, first limiting plate suit in the outside of intake pipe, first limiting plate with the hookup location of intake pipe can be adjusted.
Preferably, the first limiting plate comprises a connecting portion and a guide portion, the connecting portion is arranged at the top of the guide portion, the connecting portion is of a hollow cylindrical structure, the guide portion is of a hollow circular truncated cone-shaped structure, the smaller end of the diameter of the guide portion is connected with the connecting portion, and the connecting portion is in threaded connection with the air inlet pipe.
Preferably, the limiting element comprises a second limiting plate, the second limiting plate is of a hollow inverted circular truncated cone structure, the larger end of the diameter of the second limiting plate is connected with the inner wall of the sampling body, and the smaller end of the diameter of the second limiting plate faces the bottom of the inner cavity of the sampling body.
Preferably, the limiting element comprises a first limiting plate and a second limiting plate, the first limiting plate is of a hollow round platform-shaped structure, the smaller end of the diameter of the first limiting plate is connected with the air inlet pipe, the larger end of the diameter of the first limiting plate faces towards the bottom of the inner cavity of the sampling body, the second limiting plate is of a hollow inverted round platform structure, the larger end of the diameter of the second limiting plate is connected with the inner wall of the sampling body, the smaller end of the diameter of the second limiting plate faces towards the bottom of the inner cavity of the sampling body, a gap is formed between the first limiting plate and the second limiting plate, and the smallest diameter of the second limiting plate is smaller than the largest diameter of the first limiting plate.
Preferably, the sampling body is of a split structure and comprises an upper barrel and a lower barrel, and the upper barrel is arranged at the top of the lower barrel and is connected with the lower barrel.
Preferably, the exhaust tube and the air inlet tube are both connected with the upper barrel, one end of an outlet of the exhaust tube extends into the inner cavity of the upper barrel, and one end of an outlet of the air inlet tube is located below a communication port between the exhaust tube and the inner cavity of the sampling body.
Preferably, the upper barrel is detachably connected with the lower barrel.
Preferably, the upper barrel is in threaded connection with the lower barrel.
Compared with the prior art, the invention has the following technical effects: when the impact type air sampler works, the air exhaust pipe can be connected with external air exhaust equipment, the air exhaust equipment works, so that external air enters an inner cavity of the sampling body through the air inlet pipe, the air entering the sampling body through the air inlet pipe can impact sampling liquid, when the sampling liquid splashes upwards, part of the splashed sampling liquid is blocked by the limiting element and flows back to the inner cavity of the sampling body, and part of the splashed sampling liquid falls to the top of the limiting element. Meanwhile, the impact type air sampler can meet the sampling requirement under the condition of high air flow rate, and is beneficial to improving the sampling rate of air microorganisms and improving the accuracy of sampling results.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of an impact air sampler of the present invention;
FIG. 2 is a schematic view of the disassembled structure of the impact air sampler of the present invention;
FIG. 3 is a schematic view of a cutaway configuration of the impact air sampler of the present invention;
FIG. 4 is a schematic view of a disassembled structure of the impact air sampler of the present invention after being cut;
FIG. 5 is a schematic diagram of an embodiment of an impact air sampler of the present invention.
Wherein, 1 is the sampling body, and 101 is the upper barrel, and 102 is the lower barrel, and 2 is stop gear, and 3 is the exhaust tube, and 4 is the intake pipe, and 5 is the upper chamber body, and 6 is the lower cavity, and 7 is first limiting plate, and 701 is connecting portion, and 702 is the guide part, and 8 is the second limiting plate.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention aims to provide an impact type air sampler, which aims to solve the problems in the prior art, reduce the loss of sampling liquid and an air sample and improve the accuracy of a sampling result.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-5, fig. 1 is a schematic structural diagram of an impact air sampler of the present invention, fig. 2 is a schematic structural diagram of a disassembled impact air sampler of the present invention, fig. 3 is a schematic structural diagram of a cut-away impact air sampler of the present invention, fig. 4 is a schematic structural diagram of a disassembled impact air sampler of the present invention, and fig. 5 is a schematic structural diagram of an embodiment of an impact air sampler of the present invention.
The invention provides an impact type air sampler, which comprises a sampling body 1 and a limiting mechanism 2, wherein the inner cavity of the sampling body 1 can contain sampling liquid; the sampling body 1 is connected with an exhaust tube 3 and an air inlet tube 4, the exhaust tube 3 is communicated with the top of the inner cavity of the sampling body 1, and the air inlet tube 4 is communicated with the bottom of the inner cavity of the sampling body 1; the limiting mechanism 2 is arranged in the inner cavity of the sampling body 1, the limiting mechanism 2 comprises a limiting element, the limiting element is arranged towards the bottom of the sampling body 1 in an inclined mode, the limiting element divides the inner cavity of the sampling body 1 into an upper cavity 5 and a lower cavity 6, the upper cavity 5 is communicated with the lower cavity 6, and one end of an outlet of the air inlet pipe 4 is communicated with the lower cavity 6.
When the impact type air sampler works, the air exhaust pipe 3 can be connected with external air exhaust equipment, the air exhaust equipment works, so that external air enters an inner cavity of the sampling body 1 through the air inlet pipe 4, sampling liquid is arranged in the inner cavity of the sampling body 1, the air entering from the air inlet pipe 4 can impact the sampling liquid, when the sampling liquid splashes upwards, part of the splashed sampling liquid is blocked by the limiting element and flows back to the inner cavity of the sampling body 1, and part of the splashed sampling liquid falls to the top of the limiting element, and because the limiting element is obliquely arranged towards the bottom of the sampling body 1, the sampling liquid still flows back to the inner cavity of the sampling body 1 under the flow guide effect of the limiting element, so that the loss of the sampling liquid is effectively reduced, the long-time sampling requirement is met, and meanwhile, the loss of an air sample is reduced. Meanwhile, the impact type air sampler can meet the sampling requirement under the condition of high air flow rate, and is beneficial to improving the sampling rate of air microorganisms and improving the accuracy of sampling results. It should be explained here that the impact air sampler performs sampling operation by using a sampling liquid, the use of the sampling liquid is common knowledge of those skilled in the art, and the present invention does not provide new improvements to the application of the sampling liquid, and therefore, the detailed description about the application of the sampling liquid in sampling by the impact air sampler is omitted here.
Specifically, spacing component includes first limiting plate 7, first limiting plate 7 is hollow round platform column structure, the less one end of diameter of first limiting plate 7 links to each other with intake pipe 4, the great one end of diameter of first limiting plate 7 sets up towards the inner chamber bottom of sampling body 1, first limiting plate 7 wholly is umbelliform structure, the sampling liquid that part splashes receives the backward flow that blocks of first limiting plate 7, the sampling liquid that the part got into cavity 5 falls the top of first limiting plate 7, still flow back to cavity 6 under in through the direction of first limiting plate 7, the clearance has between the inner wall of first limiting plate 7 and sampling body 1, guarantee the intercommunication of cavity 5 and cavity 6 down, first limiting plate 7 links to each other with intake pipe 4, intake pipe 4 provides the outrigger for first limiting plate 7, intake pipe 4 is linked together with cavity 6 down, guarantee that the air that gets into by intake pipe 4 can contact with the sampling liquid.
Wherein, intake pipe 4 and the coaxial setting of sampling body 1, first limiting plate 7 suit in the outside of intake pipe 4 improves intake pipe 4's atress homogeneity, improves the degree of consistency in the gap between first limiting plate 7 and the 1 inner wall of sampling body simultaneously. It should be emphasized here that the connection position of the first limiting plate 7 and the air inlet pipe 4 can be adjusted, that is, the first limiting plate 7 can be adjusted along the axial direction of the sampling body 1, when the height of the first limiting plate 7 is low, the moving range of the splashed sampling liquid is small, and the loss and evaporation of the sampling liquid can be further reduced; when the height of first limiting plate 7 is higher, can make the space grow between first limiting plate 7 and the 1 bottom of sampling body to the area of contact of increase sampling liquid and air further improves the air microorganism sampling rate of sample thief. It should be noted here that the outlet of the air inlet pipe 4 may be located at the bottom of the first limiting plate 7, and in practical application, the position relationship between the outlet of the air inlet pipe 4 and the first limiting plate 7 may be adjusted according to practical requirements.
More specifically, the first limiting plate 7 comprises a connecting portion 701 and a guiding portion 702, the connecting portion 701 is arranged at the top of the guiding portion 702, the connecting portion 701 is of a hollow cylindrical structure, the guiding portion 702 is of a hollow circular truncated cone structure, the smaller end of the diameter of the guiding portion 702 is connected with the connecting portion 701, the connecting portion 701 is arranged to enable the first limiting plate 7 to be connected with the air inlet pipe 4 conveniently, in practical application, the connecting portion 701 is connected with the air inlet pipe 4 in a threaded mode, the height of the first limiting plate 7 is adjusted conveniently, and operation convenience is improved.
In other specific embodiments of the present invention, the limiting element includes a second limiting plate 8, the second limiting plate 8 is in a hollow inverted circular truncated cone structure, the larger diameter end of the second limiting plate 8 is connected to the inner wall of the sampling body 1, the smaller diameter end of the second limiting plate 8 is disposed toward the bottom of the inner cavity of the sampling body 1, and similarly, part of the splashed sampling liquid is blocked by the bottom surface of the second limiting plate 8 to flow back, and part of the sampling liquid entering the upper cavity 5 falls onto the top of the second limiting plate 8 and still flows back into the lower cavity 6 under the guidance of the second limiting plate 8. In the invention, the structure form of the first limiting plate 7 or the second limiting plate 8 can be selected as the limiting element, so that the loss of the sampling liquid is reduced.
In this embodiment, adopt the spacing component of two kinds of forms simultaneously, spacing component includes first limiting plate 7 and second limiting plate 8, first limiting plate 7 is hollow round platform column structure, the less one end of diameter of first limiting plate 7 links to each other with intake pipe 4, the great one end of diameter of first limiting plate 7 sets up towards the inner chamber bottom of sampling body 1, second limiting plate 8 is hollow radius platform structure, the great one end of diameter of second limiting plate 8 links to each other with the inner wall of sampling body 1, the less one end of diameter of second limiting plate 8 sets up towards the inner chamber bottom of sampling body 1, the clearance has between second limiting plate 8 and the first limiting plate 7, it is linked together with lower cavity 6 to ensure to go up cavity 5, the maximum diameter of the less first limiting plate 7 of minimum diameter of second limiting plate 8 is little. When air enters the lower cavity 6 from the air inlet pipe 4 and impacts the sampling liquid, the sampling liquid splashes upwards, wherein the sampling liquid splashed to the first limiting plate 7 is directly blocked back to the lower cavity 6 under the limiting action of the first limiting plate 7 or flows back to the lower cavity 6 along the inclined plane of the lower surface of the first limiting plate 7; the sampling liquid splashed from the gap between the first limiting plate 7 and the inner wall of the sampling body 1 is blocked back into the lower cavity 6 under the limiting action of the second limiting plate 8, or is blocked back to the upper surface of the first limiting plate 7, and then flows back to the lower cavity 6 along the inclined plane of the upper surface of the first limiting plate 7. Set up first limiting plate 7 and second limiting plate 8 simultaneously, strengthened spacing component to the limiting displacement of sampling liquid, further reduce sampling liquid and air sample loss. It should be noted that the positions of the first limiting plate 7 and the second limiting plate 8 can be adjusted according to specific conditions, and in other embodiments of the present invention, multiple sets of limiting elements can be provided as needed to further reduce the loss of the sampling liquid and the air sample.
More specifically, sampling body 1 is split type structure, and sampling body 1 includes a section of thick bamboo 101 and a section of thick bamboo 102 down, and an upper cylinder 101 sets up in the top of a section of thick bamboo 102 down and the two links to each other, and stop gear 2 sets up in the inner chamber of sampling body 1, and sampling body 1 sets up to split type structure, makes things convenient for stop gear 2's installation.
In addition, the exhaust tube 3 and the air inlet tube 4 are both connected with the upper barrel 101, one end of the outlet of the exhaust tube 3 extends into the inner cavity of the upper barrel 101, the outlet of the air inlet tube 4 is positioned below the outlet of the exhaust tube 3, the axis of the exhaust tube 3 is parallel to the axis of the air inlet tube 4, the length of the exhaust tube 3 is short, and the gas in the inner cavity of the sampling body 1 is convenient to discharge, and it should be explained here that the "outlet" of the exhaust tube 3 refers to a communication port between the exhaust tube 3 and the inner cavity of the sampling body 1, and correspondingly, the "outlet" of the air inlet tube 4 refers to a communication port between the air inlet tube 4 and the inner cavity of the sampling body 1; in addition, as mentioned above, the length of the exhaust tube 3 is shorter, specifically, the length of the exhaust tube 3 extending into the inner cavity of the sampling body 1 is shorter than the length of the air inlet tube 4 extending into the inner cavity of the sampling body 1.
In order to facilitate the assembly and disassembly of the sampling body 1, the upper barrel 101 and the lower barrel 102 are detachably connected, and meanwhile, the adjustment convenience of the limiting mechanism 2 is improved. In actual production, stop gear 2 can set up to with 1 swing joint of sampling body, conveniently according to concrete operating mode adjustment position, improves the nimble adaptability of sample thief. Under the comparatively fixed circumstances of some sampling requirements, can also preset the position of first limiting plate 7 or second limiting plate 8, be fixed in sampling body 1 with first limiting plate 7 (or second limiting plate 8), then set up second limiting plate 8 (or first limiting plate 7) as swing joint, when lightening the operation burden, keep stop gear 2's adjustability, in addition, the upper and lower position relation of first limiting plate 7 and second limiting plate 8 can be adjusted according to actual conditions.
In the present embodiment, the upper barrel 101 is screwed to the lower barrel 102, which greatly facilitates the assembly and disassembly of the sampling body 1. In practical applications, the thread between the upper barrel 101 and the lower barrel 102 can be a sealing thread, or a sealing element is arranged between the upper barrel 101 and the lower barrel 102 to improve the sealing performance between the sampling bodies 1.
When the impact type air sampler disclosed by the invention is used, air enters the lower cavity 6 from the air inlet pipe 4 and impacts sampling liquid, the sampling liquid splashes upwards, wherein the sampling liquid splashed to the first limiting plate 7 is directly blocked back to the lower cavity 6 under the limiting action of the first limiting plate 7 or flows back to the lower cavity 6 along the inclined plane of the lower surface of the first limiting plate 7; the sampling liquid splashed from the gap between the first limiting plate 7 and the inner wall of the sampling body 1 is blocked back into the lower cavity 6 under the limiting action of the second limiting plate 8, or is blocked back to the upper surface of the first limiting plate 7, and then flows back to the lower cavity 6 along the inclined plane of the upper surface of the first limiting plate 7. According to the invention, the first limiting plate 7 and the second limiting plate 8 are arranged at the same time, so that the limiting effect of the limiting element on the sampling liquid is enhanced, and the losses of the sampling liquid and the air sample are further reduced. Meanwhile, the height of the limiting mechanism 2 can be adjusted, and when the height of the limiting mechanism 2 is lower, the loss of the sampling liquid can be further reduced; when the height of the limiting mechanism 2 is higher, the space of the lower cavity 6 can be enlarged, so that the contact area of the sampling liquid and air is increased, and the air microorganism sampling rate of the sampler is further improved. The setting position of first limiting plate 7 and second limiting plate 8 also can be adjusted, and under the velocity of flow of difference, the sampling air can freely pass in and out sampling body 1, avoids influencing the air flow, and has improved the nimble adaptability of sample thief. In addition, the surfaces of the first limiting plate 7 and the second limiting plate 8 can be designed to be hydrophobic surfaces so as to reduce the residue of the sampling liquid on the surfaces of the first limiting plate 7 and the second limiting plate 8, thereby further reducing the loss of the sampling liquid.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. An impact air sampler, comprising:
the sampling device comprises a sampling body, wherein an inner cavity of the sampling body can contain sampling liquid; the sampling body is connected with an exhaust tube and an air inlet tube, the exhaust tube is communicated with the top of an inner cavity of the sampling body, and the air inlet tube is communicated with the bottom of the inner cavity of the sampling body;
the limiting mechanism is arranged in the inner cavity of the sampling body and comprises a limiting element, the limiting element is obliquely arranged towards the bottom of the sampling body, the limiting element divides the inner cavity of the sampling body into an upper cavity and a lower cavity, the upper cavity is communicated with the lower cavity, and one end of an outlet of the air inlet pipe is communicated with the lower cavity.
2. The impact air sampler of claim 1, wherein: the limiting element comprises a first limiting plate, the first limiting plate is of a hollow round platform-shaped structure, the smaller end of the diameter of the first limiting plate is connected with the air inlet pipe, and the larger end of the diameter of the first limiting plate faces the bottom of the inner cavity of the sampling body.
3. The impact air sampler of claim 2, wherein: the air inlet pipe and the sampling body are coaxially arranged, the first limiting plate is sleeved outside the air inlet pipe, and the connecting position of the first limiting plate and the air inlet pipe can be adjusted.
4. The impact air sampler of claim 3, wherein: the first limiting plate comprises a connecting portion and a guide portion, the connecting portion is arranged at the top of the guide portion, the connecting portion is of a hollow cylindrical structure, the guide portion is of a hollow round platform-shaped structure, the smaller end of the diameter of the guide portion is connected with the connecting portion, and the connecting portion is in threaded connection with the air inlet pipe.
5. The impact air sampler of claim 1, wherein: the limiting element comprises a second limiting plate, the second limiting plate is of a hollow inverted circular truncated cone structure, the larger end of the diameter of the second limiting plate is connected with the inner wall of the sampling body, and the smaller end of the diameter of the second limiting plate faces the bottom of the inner cavity of the sampling body.
6. The impact air sampler of claim 1, wherein: the limiting element comprises a first limiting plate and a second limiting plate, the first limiting plate is of a hollow round platform-shaped structure, the smaller end of the diameter of the first limiting plate is connected with the air inlet pipe, the larger end of the diameter of the first limiting plate faces towards the bottom of the inner cavity of the sampling body, the second limiting plate is of a hollow inverted round platform structure, the larger end of the diameter of the second limiting plate is connected with the inner wall of the sampling body, the smaller end of the diameter of the second limiting plate faces towards the bottom of the inner cavity of the sampling body, a gap is formed between the first limiting plate and the second limiting plate, and the smallest diameter of the second limiting plate is smaller than the largest diameter of the first limiting plate.
7. The impact air sampler according to any one of claims 1-6, wherein: the sampling body is of a split structure and comprises an upper barrel and a lower barrel, wherein the upper barrel is arranged at the top of the lower barrel, and the upper barrel and the lower barrel are connected.
8. The impact air sampler of claim 7, wherein: the air exhaust pipe and the air inlet pipe are connected with the upper barrel, one end of an outlet of the air exhaust pipe extends into the inner cavity of the upper barrel, and one end of an outlet of the air inlet pipe is located below a communication port of the air exhaust pipe and the inner cavity of the sampling body.
9. The impact air sampler of claim 7, wherein: the upper barrel is detachably connected with the lower barrel.
10. The impact air sampler of claim 9, wherein: the upper barrel is in threaded connection with the lower barrel.
CN202210447601.1A 2022-04-25 2022-04-25 Impact type air sampler Active CN114540177B (en)

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CN114540177B CN114540177B (en) 2022-07-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115141727A (en) * 2022-09-06 2022-10-04 至美时代生物智能科技(北京)有限公司 Impact type air sampler
CN115141726A (en) * 2022-09-06 2022-10-04 至美时代生物智能科技(北京)有限公司 Air sampler
CN115161172A (en) * 2022-09-06 2022-10-11 至美时代生物智能科技(北京)有限公司 Air sampler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050279181A1 (en) * 2003-08-12 2005-12-22 Skc, Inc. Air sampler with parallel impactors
CN103756894A (en) * 2014-01-06 2014-04-30 中国科学院合肥物质科学研究院 Liquid impact-type air microorganism sampler
WO2016116024A1 (en) * 2015-01-20 2016-07-28 西安博康电子有限公司 Point-type active smoke detector with or without gas sampling tube and air sampling system
CN215328084U (en) * 2021-11-25 2021-12-28 至美时代生物智能科技(北京)有限公司 Air microorganism sampling bottle and air microorganism sampling device
CN114032173A (en) * 2022-01-11 2022-02-11 至美时代生物智能科技(北京)有限公司 Closed air sampling bottle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050279181A1 (en) * 2003-08-12 2005-12-22 Skc, Inc. Air sampler with parallel impactors
CN103756894A (en) * 2014-01-06 2014-04-30 中国科学院合肥物质科学研究院 Liquid impact-type air microorganism sampler
WO2016116024A1 (en) * 2015-01-20 2016-07-28 西安博康电子有限公司 Point-type active smoke detector with or without gas sampling tube and air sampling system
CN215328084U (en) * 2021-11-25 2021-12-28 至美时代生物智能科技(北京)有限公司 Air microorganism sampling bottle and air microorganism sampling device
CN114032173A (en) * 2022-01-11 2022-02-11 至美时代生物智能科技(北京)有限公司 Closed air sampling bottle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115141727A (en) * 2022-09-06 2022-10-04 至美时代生物智能科技(北京)有限公司 Impact type air sampler
CN115141726A (en) * 2022-09-06 2022-10-04 至美时代生物智能科技(北京)有限公司 Air sampler
CN115161172A (en) * 2022-09-06 2022-10-11 至美时代生物智能科技(北京)有限公司 Air sampler

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