CN113145029B - Microbial aerosol generating device - Google Patents
Microbial aerosol generating device Download PDFInfo
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- CN113145029B CN113145029B CN202110356869.XA CN202110356869A CN113145029B CN 113145029 B CN113145029 B CN 113145029B CN 202110356869 A CN202110356869 A CN 202110356869A CN 113145029 B CN113145029 B CN 113145029B
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- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0095—Preparation of aerosols
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Abstract
The invention discloses a microbial aerosol generating device which comprises a framework, wherein the framework is fixedly connected with a fixing ring at a position spaced from the lower part of the framework by a certain distance, a plurality of hinges I are distributed around the periphery of the edge of the fixing ring, each hinge I is hinged with a blade fixing shaft, and each blade fixing shaft is fixedly connected with a guide vane at a position spaced from the hinge I by a certain distance; a plurality of guide vanes distributed circumferentially can be folded into an inverted frustum; the lower end of the framework is fixedly connected with a central shaft concentric with the fixing ring, and a spraying adjusting assembly is arranged in the central shaft. Compared with the prior art, the invention can adjust the spraying range, and the opening and closing degree of the guide vanes, the distribution area of the nozzle and the inclination angle of the nozzle are simultaneously controlled during adjusting the range, so that the spraying efficiency is high, the microorganism distribution is uniform, and better test conditions can be achieved.
Description
Technical Field
The invention relates to the technical field of aerosol, in particular to a microbial aerosol generating device.
Background
Microbial aerosols are colloidal systems formed by suspending a population of small, simple-structured, single-cell or nearly single-cell organisms in air. The activity of the microbial aerosol is constantly in a state of change from the moment it is formed. Microorganisms in the air are closely related to human production and life, and can not only benefit human beings, but also harm human life and health. Therefore, the research and monitoring of the concentration, the type, the distribution and the change rule of the aerosol of the air microorganisms are of great significance.
The microbial aerosol generating device is important equipment for researching and monitoring related tests of microbial aerosol, and is used for generating microbial aerosol in experimental aeromicrobiology. The method is commonly used for generating the microbial aerosol in experiments such as the dosage of microbial aerosol animal infection, the recovery rate of microbial aerosol survival, the research of aerosol tracer, the dosage of human body aerosol immunity, the sterilization effect of air disinfector and disinfector, the blocking effect of filter material and filter, and the like.
In the prior art, a microbial solution is sprayed in a mist shape by using a nozzle to generate microbial aerosol, but the generation efficiency of the microbial aerosol is low, the energy consumption is high, the particle size of the generated aerosol is uneven, the concentration is unstable, the spatial distribution is uneven, and the use standard of the high-quality microbial aerosol cannot be met;
in addition, the existing microbial aerosol generating device cannot adjust the spraying range, cannot be well suitable for various types of research and detection, and is easy to have the phenomenon of insufficient range or resource waste.
Therefore, it is necessary to provide a microbial aerosol generating apparatus to solve the above problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a microbial aerosol generating device comprises a framework, wherein a fixing ring is fixedly connected to the framework at a position spaced from the lower part of the framework by a certain distance, a plurality of hinges I are distributed around the periphery of the edge of the fixing ring, a blade fixing shaft is hinged to each hinge I, and a guide blade is fixedly connected to each blade fixing shaft at a position spaced from each hinge I by a certain distance;
a plurality of guide vanes distributed circumferentially can be folded into an inverted frustum;
a central shaft concentric with the fixing ring is fixedly connected below the framework, a spray adjusting assembly is arranged in the central shaft, a lifting ring concentric with the fixing ring is arranged on the spray adjusting assembly, and the outer diameter of the lifting ring is smaller than the inner diameter of the fixing ring;
and a fan concentric with the fixing ring is arranged above the framework.
Preferably, a second hinge is fixed on one side, away from the center of the circle of the fixed ring, of each first hinge in the fixed ring, a crank is rotatably connected in each second hinge, the crank is of a two-piece structure, the blade fixed shaft penetrates through the crank, and the crank bends towards the center of the circle of the fixed ring;
the position of the lifting ring corresponding to each crank is rotatably connected with a crank pull rod, and one end of the crank pull rod, which is far away from the lifting ring, is rotatably connected with one end of the crank, which is close to the circle center of the fixed ring.
Preferably, blade fixing shaft limiting blocks are fixed on two sides of the blade fixing shaft in the crank, and the blade fixing shaft can be limited to pass through the blade fixing shaft limiting blocks.
Preferably, a plurality of connection lugs are fixed on the periphery of the lifting ring, the connection lugs can project to the position of the fixing ring, and a servo telescopic rod is arranged between each connection lug and the fixing ring.
Further, preferably, the spray adjustment assembly comprises a spoke beam, a plurality of spokes extending along the radial direction of the central shaft are uniformly distributed on the circumference of the spoke beam and fixedly connected with the central shaft, the spoke beam is of a two-piece structure which is through up and down, and the center of the spoke beam is also provided with a sliding groove through which two sides are through;
a sliding pin is arranged in a sliding groove of each spoke beam, the sliding pin limits axial movement, and a nozzle connecting assembly is arranged in the sliding pin.
Further, preferably, an adjusting pull rod extending along the central shaft direction is rotatably connected to the sliding pin in each spoke beam;
a movable sleeve capable of moving up and down is sleeved in the central shaft above the spoke beam, and one end of each adjusting pull rod, which is far away from the sliding pin, is rotatably connected into the movable sleeve;
the movable sleeve is fixedly connected with the lifting ring through a plurality of spokes.
Further, preferably, the nozzle connecting assembly comprises nozzle side rods and a nozzle, the two nozzle side rods are rotatably arranged in sliding pins outside two sides of a spoke beam, and a connecting pipeline is fixed between the two nozzle side rods in the spoke beam;
the upper end of the connecting pipeline is provided with a connecting port, the connecting port provides corresponding microbial solution through a liquid supply pipeline, and a nozzle is connected below the connecting pipeline.
Preferably, one end of the nozzle side lever on one side of the nozzle connecting assembly, which is close to the sliding pin, is fixed with a convex handle inclined towards the direction away from the circle center of the fixing ring, a nozzle connecting rod is rotatably connected in the convex handle, and one end of the nozzle connecting rod, which is away from the convex handle, is rotatably connected to one side of the adjusting pull rod.
Further, in this embodiment, preferably, an adjusting sliding groove is formed in the nozzle connecting rod along a length direction thereof, the adjusting sliding groove is connected to the adjusting pull rod through a set screw, and the set screw is a double-layer screw, can be adjusted in tightness with the adjusting sliding groove, and is rotatably connected to the adjusting pull rod.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the lifting ring is driven to lift by the extension of the servo telescopic rod, so that the blade fixing shaft can rotate to correspondingly open and close the guide blades so as to change the spraying range, and meanwhile, the nozzle connecting assembly changes the position in the spoke beam and correspondingly spreads or folds, and the nozzle is inclined towards the direction close to the circle center of the fixing ring when the nozzle connecting assembly folds, otherwise, the nozzle is inclined towards the direction far away from the circle center of the fixing ring;
thereby make the diffusion scope of nozzle spun microorganism aerosol receive servo telescopic link's control, and the inclination of guide vane opening and shutting degree, nozzle distribution area and nozzle receives control simultaneously during the adjustment range, and the spraying is efficient, and the microorganism distributes evenly, reaches better test condition.
Drawings
FIG. 1 is a schematic structural view of a microbial aerosol generating device;
FIG. 2 is a schematic view of a connecting structure of a guide vane and a fixing ring of a microbial aerosol generating device;
FIG. 3 is a schematic view of a spray adjustment assembly of a microbial aerosol generating device;
FIG. 4 is a schematic view of a nozzle connecting assembly of a microbial aerosol generating device;
in the figure: 1. a frame; 2. a fixing ring; 3. a lifting ring; 4. a central shaft; 5. servo telescopic link; 6. a movable sleeve; 7. a spray adjustment assembly; 8. a crank; 9. a crank pull rod; 10. a guide vane; 11. a blade fixing shaft; 12. a blade fixing shaft limiting block; 13. connecting a lug plate; 14. a first hinge; 15. a second hinge; 16. a fan; 71. adjusting the pull rod; 72. a spoke beam; 73. a chute; 74. a nozzle connection assembly; 75. a sliding pin; 741. a nozzle side lever; 742. a connecting port; 743. connecting a pipeline; 744. a nozzle; 745. a convex handle; 746. a nozzle link; 747. adjusting the sliding chute; 748. and (5) tightening the screw.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a microbial aerosol generating device includes a frame 1, where the frame 1 is fixedly connected with a fixing ring 2 at a certain distance from a lower portion of the frame, the fixing ring 2 is distributed with a plurality of hinges 14 around an edge circumference of the fixing ring, each hinge 14 is hinged with a blade fixing shaft 11, and each blade fixing shaft 11 is fixedly connected with a guide vane 10 at a certain distance from the hinge 14;
a plurality of guide vanes 10 distributed circumferentially can be folded into an inverted circular truncated cone;
a central shaft 4 concentric with the fixing ring 2 is fixedly connected below the framework 1, a spray adjusting assembly 7 is arranged in the central shaft 4, a lifting ring 3 concentric with the fixing ring 2 is arranged on the spray adjusting assembly 7, and the outer diameter of the lifting ring 3 is smaller than the inner diameter of the fixing ring 2;
a fan 16 concentric with the fixing ring 2 is arranged above the framework 1.
Referring to fig. 1 and fig. 2, in the embodiment, a second hinge 15 is fixed on one side of each first hinge 14 in the fixing ring 2, which is away from the center of the fixing ring 2, a crank 8 is rotatably connected in each second hinge 15, the crank 8 is of a two-piece structure, the blade fixing shaft 11 penetrates through the crank 8, and the crank 8 bends toward the center of the fixing ring 2;
the position corresponding to each crank 8 in the lifting ring 3 is rotatably connected with a crank pull rod 9, and one end of the crank pull rod 9 far away from the lifting ring 3 is rotatably connected with one end of the crank 8 close to the circle center of the fixed ring 2.
In this embodiment, the two sides of the blade fixing shaft 11 in the crank 8 are fixed with the blade fixing shaft limiting blocks 12, so that the blade fixing shaft 11 can be limited to pass through the blade fixing shaft limiting blocks 12.
In this embodiment, a plurality of connection lugs 13 are fixed on the periphery of the lifting ring 3, the connection lugs 13 can project to the positions of the fixed rings 2, and a servo telescopic rod 5 is arranged between each connection lug 13 and each fixed ring 2;
that is to say, the lifting ring 3 is driven to lift by the extension of the servo telescopic rod 5, the crank pull rod 9 pulls the crank 8 to rotate, the front and rear positions of the blade fixing shaft limiting block 12 can be changed, and the blade fixing shaft 11 rotates to correspondingly open and close the guide vanes 10, so that the spraying range is changed.
Referring to fig. 3, in the present embodiment, the spray adjustment assembly 7 includes a spoke beam 72, a plurality of spokes 72 extending along the radial direction of the central shaft 4 are uniformly distributed and fixedly connected with the central shaft 4, the spoke beam 72 is a two-piece structure penetrating up and down, and a sliding slot 73 penetrating through two sides is further formed in the center of the spoke beam 72;
a sliding pin 75 is arranged in the slide slot 73 of each spoke 72, the sliding pin 75 limiting the axial movement, and a nozzle connecting assembly 74 is arranged in the sliding pin 75.
Referring to fig. 3, in the present embodiment, an adjusting pull rod 71 extending along the central axis 4 is rotatably connected to the sliding pin 75 in each spoke beam 72;
a movable sleeve 6 which can move up and down is sleeved in the central shaft 4 above the spoke beam 72, and one end of each adjusting pull rod 71, which is far away from the sliding pin 75, is rotatably connected into the movable sleeve 6.
In this embodiment, the movable sleeve 6 is fixedly connected to the lifting ring 3 through a plurality of spokes, and when the lifting ring 3 is lifted to open and close the guide vanes 10, the movable sleeve 6 is lifted in a linkage manner and the nozzle connecting assembly 74 is changed in position in the spoke beam 72 by adjusting the action of the pull rod 71, so as to be correspondingly spread or folded.
Referring to fig. 4, in the present embodiment, the nozzle connecting assembly 74 includes nozzle side rods 741 and nozzles 744, the two nozzle side rods 741 are rotatably disposed in the sliding pins 75 outside the two sides of the spoke beam 72, and a connecting duct 743 is fixed between the two nozzle side rods 741 in the spoke beam 72;
a connection port 742 is formed in the upper end of the connection pipeline 743, the connection port 742 supplies corresponding microbial solution through a liquid supply pipeline, and a nozzle 744 is connected below the connection pipeline 743;
preferably, the nozzle 744 in this embodiment is a Laskin nozzle, which is a nozzle with a relatively simple structure, can generate high-concentration polydisperse submicron aerosol particles, and is adopted for filter tests of eu standard EN1822, japanese standard JS9908, and U.S. military standard MIL-STD28220, which are not described in detail in the prior art.
In this embodiment, a protruding handle 745 inclined away from the center of the fixed ring 2 is fixed to one end of the nozzle side lever 741 on the side of the nozzle connecting assembly 74 close to the slide pin 75, a nozzle link 746 is rotatably connected to the protruding handle 745, and one end of the nozzle link 746 away from the protruding handle 745 is rotatably connected to the side of the adjustment lever 71.
In this embodiment, the nozzle link 746 is provided with an adjusting chute 747 along the length direction thereof, the adjusting chute 747 is connected to the adjusting pull rod 71 through a set screw 748, and the set screw 748 is a double-layer screw capable of adjusting the tightness of the adjusting chute 747 and rotatably connected to the adjusting pull rod 71;
that is, when the nozzle connecting assembly 74 is pulled by the adjusting pull rod 71 to move, the included angle between the adjusting pull rod 71 and the horizontal direction changes, and the nozzle connecting rod 746 drives the protruding handle 745 and the nozzle side lever 741 to rotate, so as to change the spraying direction of the nozzle 744, that is, the nozzle 744 is tilted toward the center of the fixed ring 2 when the nozzle connecting assembly 74 is folded, and is tilted away from the center of the fixed ring 2 otherwise.
In specific implementation, a nozzle 744 in the nozzle connecting assembly 74 is connected with an externally pumped microbial solution spray through a connecting port 742 to form microbial aerosol, and the fan 16 guides the microbial aerosol to blow out from an opening below the guiding vane 10;
the lifting ring 3 is driven to lift through the extension and retraction of the servo telescopic rod 5, the crank pull rod 9 is enabled to pull the crank 8 to rotate, the front and rear positions of the blade fixing shaft limiting blocks 12 can be changed, and the blade fixing shafts 11 are enabled to rotate, so that the guide vanes 10 are correspondingly opened and closed, and the spraying range is changed;
meanwhile, when the lifting ring 3 is lifted to open and close the guide vanes 10, the movable sleeve 6 is lifted in a linkage manner and the nozzle connecting assembly 74 is changed in position in the spoke beam 72 by adjusting the action of the pull rod 71, and accordingly is spread or folded;
when the nozzle connecting assembly 74 is pulled to move by the adjusting pull rod 71, the included angle between the adjusting pull rod 71 and the horizontal direction changes, and the convex handle 745 and the nozzle side lever 741 are driven to rotate by the nozzle connecting rod 746, so that the spraying direction of the nozzle 744 changes, namely, the nozzle 744 inclines towards the direction close to the center of the fixed ring 2 when the nozzle connecting assembly 74 is folded, and otherwise inclines towards the direction far away from the center of the fixed ring 2;
in addition, the initial inclination angle of the nozzle 744 can be adjusted to adapt to different spraying amounts and wind pressures by adjusting the position of the set screw 748 in the adjusting slide groove 747.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (6)
1. A microbial aerosol generating device comprises a framework (1) and is characterized in that a fixing ring (2) is fixedly connected to the framework (1) at a position spaced from the lower part of the framework by a certain distance, a plurality of hinges I (14) are distributed on the fixing ring (2) around the periphery of the edge of the fixing ring, a blade fixing shaft (11) is hinged to each hinge I (14), and a guide blade (10) is fixedly connected to the position spaced from each hinge I (14) by the certain distance of each blade fixing shaft (11);
a plurality of guide vanes (10) distributed circumferentially can be folded into an inverted circular truncated cone;
a central shaft (4) concentric with the fixing ring (2) is fixedly connected to the lower portion of the framework (1), a spraying adjusting assembly (7) is arranged in the central shaft (4), a lifting ring (3) concentric with the fixing ring (2) is arranged on the spraying adjusting assembly (7), and the outer diameter of the lifting ring (3) is smaller than the inner diameter of the fixing ring (2);
a fan (16) concentric with the fixed ring (2) is arranged above the framework (1);
a second hinge (15) is fixed on one side, away from the circle center of the fixed ring (2), of each first hinge (14) in the fixed ring (2), a crank (8) is rotatably connected in each second hinge (15), the crank (8) is of a two-piece structure, the blade fixing shaft (11) penetrates through the crank (8), and the crank (8) bends towards the circle center of the fixed ring (2);
a crank pull rod (9) is rotatably connected to the position, corresponding to each crank (8), in the lifting ring (3), one end, far away from the lifting ring (3), of each crank pull rod (9) is rotatably connected with one end, close to the circle center of the fixed ring (2), of each crank (8);
a plurality of connecting lugs (13) are fixed on the periphery of the lifting ring (3), the connecting lugs (13) can project to the position of the fixing ring (2), and a servo telescopic rod (5) is arranged between each connecting lug (13) and the fixing ring (2);
the spray adjusting assembly (7) comprises a spoke beam (72), a plurality of spokes (72) which extend along the radial direction of the central shaft (4) are uniformly distributed on the circumference and fixedly connected with the central shaft (4), the spoke beam (72) is of a two-piece structure which is through up and down, and the center of the spoke beam (72) is also provided with a sliding groove (73) with two through sides;
a sliding pin (75) is arranged in the sliding groove (73) of each spoke beam (72), the sliding pin (75) limits axial movement, and a nozzle connecting assembly (74) is arranged in the sliding pin (75);
an adjusting pull rod (71) extending along the direction of the central shaft (4) is rotatably connected in a sliding pin (75) in each spoke beam (72);
a movable sleeve (6) capable of moving up and down is sleeved in the central shaft (4) above the spoke beam (72), and one end, far away from the sliding pin (75), of each adjusting pull rod (71) is rotatably connected into the movable sleeve (6).
2. A microbial aerosol generating device according to claim 1, wherein blade fixing shaft limiting blocks (12) are fixed on two sides of the blade fixing shaft (11) in the crank (8), and the blade fixing shaft (11) can be limited to pass through the blade fixing shaft limiting blocks (12).
3. A microbial aerosol generator as claimed in claim 1, wherein the movable sleeve (6) is fixedly connected to the lifting ring (3) by a plurality of spokes.
4. A microbial aerosol generating device according to claim 1, wherein the nozzle connecting assembly (74) comprises nozzle rods (741) and nozzles (744), the two nozzle rods (741) are rotatably disposed in sliding pins (75) outside the spoke (72), and a connecting duct (743) is fixed between the two nozzle rods (741) in the spoke (72);
a connecting port (742) is arranged at the upper end of the connecting pipeline (743), the connecting port (742) provides corresponding microbial solution through a liquid supply pipeline, and a nozzle (744) is connected below the connecting pipeline (743).
5. A microbial aerosol generating device according to claim 4, wherein the nozzle side lever (741) on the side of the nozzle connecting assembly (74) is fixed with a convex handle (745) which is inclined away from the center of the fixed ring (2) near one end of the sliding pin (75), the convex handle (745) is rotatably connected with a nozzle connecting rod (746), and the end of the nozzle connecting rod (746) away from the convex handle (745) is rotatably connected to the side of the adjusting pull rod (71).
6. A microbial aerosol generating device according to claim 5, wherein the nozzle link (746) is provided with an adjusting slide groove (747) along a length direction thereof, the adjusting slide groove (747) is connected to the adjusting pull rod (71) by a set screw (748), and the set screw (748) is a double-layer screw capable of adjusting tightness with the adjusting slide groove (747) and rotatably connected to the adjusting pull rod (71).
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| CN202110356869.XA CN113145029B (en) | 2021-04-01 | 2021-04-01 | Microbial aerosol generating device |
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| CN202110356869.XA CN113145029B (en) | 2021-04-01 | 2021-04-01 | Microbial aerosol generating device |
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| CN113145029A CN113145029A (en) | 2021-07-23 |
| CN113145029B true CN113145029B (en) | 2022-05-27 |
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| CN113521926B (en) * | 2021-08-10 | 2022-12-06 | 广州城建职业学院 | Building construction working face sprays dust fall cooling device |
| CN113686743B (en) * | 2021-08-19 | 2022-08-02 | 天津大学 | On-line monitoring and analyzing device for atmospheric aerosol |
| CN117470598B (en) * | 2023-12-28 | 2024-02-27 | 南京拓服工坊科技有限公司 | Quick analyzer for nitrogen-oxygen-containing volatile organic compounds of environment monitoring fixed station |
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| WO2019145525A1 (en) * | 2018-01-29 | 2019-08-01 | Confarma France | System for exposure to a product in the form of an aerosol and method for evaluating the inegrity of a container by means of such a system |
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| CN110833801A (en) * | 2019-11-26 | 2020-02-25 | 衡阳旭光锌锗科技有限公司 | Aerosol generator |
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| JPH02157036A (en) * | 1988-09-19 | 1990-06-15 | Usa Government | Method for producing monodispersed aerosol and apparatus thereof |
| CN104857901A (en) * | 2015-06-15 | 2015-08-26 | 华北电力大学（保定） | Microorganism aerosol generation device |
| WO2019145525A1 (en) * | 2018-01-29 | 2019-08-01 | Confarma France | System for exposure to a product in the form of an aerosol and method for evaluating the inegrity of a container by means of such a system |
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