CN110252217A - Simulated aerosol generating device - Google Patents

Simulated aerosol generating device Download PDF

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Publication number
CN110252217A
CN110252217A CN201910534612.1A CN201910534612A CN110252217A CN 110252217 A CN110252217 A CN 110252217A CN 201910534612 A CN201910534612 A CN 201910534612A CN 110252217 A CN110252217 A CN 110252217A
Authority
CN
China
Prior art keywords
generating device
aerosol generating
dropping liquid
spinning disk
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910534612.1A
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Chinese (zh)
Inventor
姚绍卫
鲍安平
张志友
严莉莉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Vocational College Of Information Technology
Original Assignee
Nanjing Vocational College Of Information Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Vocational College Of Information Technology filed Critical Nanjing Vocational College Of Information Technology
Priority to CN201910534612.1A priority Critical patent/CN110252217A/en
Publication of CN110252217A publication Critical patent/CN110252217A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/0095Preparation of aerosols
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/226Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

The invention discloses a simulated aerosol generating device, which comprises a vortex disc and a liquid dropping nozzle; the liquid dropping nozzle is suspended at the top of the vortex disc, and the liquid outlet is opposite to the vortex disc; the vortex disk is driven to rotate by a motor. The device is particularly suitable for a leakage detection test of the biosafety cabinet, is made of all-metal materials and is not easy to damage; the device has the advantages that the structure is simple, the assembly, the disassembly and the operation are simple and convenient, the aerosol generation simulation effect is good, the control device drives the peristaltic pump to feed liquid, and the drive motor to rotate the vortex disc, so that the generation of aerosol is simulated; the simulation effect has certain adjustability, meets the standard and standard requirements, and has strong practicability and wide applicability.

Description

A kind of simulation aerosol generating device
Technical field
The present invention relates to a kind of simulation aerosol generating devices, and in particular to a kind of Biohazard Safety Equipment leak detection test mould Quasi- aerosol generating device, belongs to technical field of quality detection.
Background technique
Biohazard Safety Equipment (biological safety cabin.BSC) be can prevent it is certain in experimental implementation treatment process The box air cleaning negative pressure safety means of aerosol dissipation occur containing risk or non-intellectual biological particle.The device is When operating or examining has infective microorganism, it is used to protection staff, laboratory environment and extraneous natural environment, experiment Sample avoids exposure to issuable aerosol and the device for splashing out substance and designing during aforesaid operations.The reason is that behaviour Author's naked eyes can not see 5 μm of diameter of aerosol and the small dropping liquid that diameter is 5-100 μm, so Biohazard Safety Equipment is let out Dew index is to examine one of the important indicator of its quality.
Biohazard Safety Equipment is divided into three-level: I grade of Biohazard Safety Equipment, II grade of Biohazard Safety Equipment and III grade of Biohazard Safety Equipment.
I grade of Biohazard Safety Equipment has front window operation port, and operator can be operated in safety cabinet by front window operation port.Before The safety for the negative pressure gas flow protection operator that window operation port is drawn inwardly to;Peace is discharged in discharge air-flow after high efficiency particulate air filter filters Full cabinet protects environment.
II grade of Biohazard Safety Equipment has front window operation port, and operator can be operated in safety cabinet by front window operation port, The safety for the negative pressure gas flow protection operator that front window operation port is drawn inwardly to;Through high efficiency particulate air filter filtering down current to It protects and tests article in safety cabinet;Safety cabinet is discharged after high efficiency particulate air filter filters to protect environment in air-flow.
III grade of Biohazard Safety Equipment is vent cabinet that is totally-enclosed, not revealing structure.Operator by with cabinet body airtight connection Gloves implement operation in safety cabinet.It is real in safety cabinet to protect that down current enters safety cabinet after high efficiency particulate air filter filters Test article;Discharge air-flow is through twice high efficiency particulate air filter or one of high efficiency particulate air filter filtering again through burning disposal for protecting environment.
Biohazard Safety Equipment belongs to high risk equipment, to guarantee that staff and laboratory environment are not contaminated, pacifies to biology The leakage control of full cabinet is necessary.
According to correlation as defined in People's Republic of China (PRC) pharmaceuticals industry standard YY 0569-2011 " II grade of Biohazard Safety Equipment " Specification carries out the leak detection of Biohazard Safety Equipment using potassium iodide method.Biohazard Safety Equipment is tested and measured using potassium iodide method Protective capacities can be used to test I type and II type front window open type Biohazard Safety Equipment.It is different from the experiment of common microorganism testing, Potassium iodide method of testing will be appreciated that it is the test method that can uniquely verify Biohazard Safety Equipment protective performance on the spot, can To provide reliable testing result in a relatively short period of time.The incubation time of 48 hours is needed using the method for microculture When detecting clump count, potassium iodide method of testing obtains believable testing result in upon start 30 minutes, and use Potassium iodide will not pollute laboratory environment.
Key instrument in potassium iodide method test are as follows:
Aerosol generator can be incited somebody to action by diameter 38mm with the spinning disk of ± 500 r/min speed of 28000r/min rotation and one Liquor kalii iodide is ejected into the nozzle on spinning disk and forms, and the gap of nozzle end and spinning disk is adjusted to 0.1mm.
Air sampler: being worked using centripetal force principle, and the air mass flow of front entrance is 100L/min, a conical pipe This air of entrainment 3%.
Interfere cylinder: diameter 60mm~65mm, show it is smooth, it is at least closed at one end, supported by bracket.
Petri dish: diameter 55mm.
Filter membrane: diameter 25mm, 3 μm of aperture.
Potassium iodide method test procedure:
Start safety cabinet, makes its operation to normal operating state.
Make air sampler air-breathing, starts spinning disk.After waiting 15 seconds, enter potassium iodide in the middle part of spinning disk, allows The potassium iodide of 20mL is aerosolized.Air sampler stops suction after aerosolized end 15 seconds.Until aspiration pump stops completely After coming, filter membrane is removed.
The filter membrane removed on one sampler is put into the petri dish for filling palladium chloride solution, air-flow is exposed to In it is face-up.That sampler for removing filter membrane is marked.
Filter membrane will be chlorinated palladium saturation in 30 seconds~50 seconds, and all potassium iodide particles will become the visible spot of brown Point.Filter membrane is put into distilled water and is impregnated with 3 seconds~4 seconds, then filter membrane is placed on clean filter paper dry.Other air The filter membrane taken off on sampler also does identical processing.
This just needs a kind of potassium iodide drop formed equipped with nozzle to form uniform aerosol under spinning disk effect and fill It sets, tests whether Biohazard Safety Equipment has leakage with this to simulate aerosol, if be contaminated.Device is placed on biology to be detected The centre of safety cabinet, a height-adjustable bracket being equipped with by device, so that spinning disk and biology that device is equipped with are pacified Full cabinet front opening top edge is horizontal.
Summary of the invention
To solve the deficiencies in the prior art, being suitable for for code requirement is complied with standard the purpose of the present invention is to provide a kind of The simulation aerosol generating device of Biohazard Safety Equipment leak detection test.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of simulation aerosol generating device, including spinning disk, dropping liquid nozzle;
The dropping liquid nozzle is suspended at the top of spinning disk, liquid outlet face spinning disk;
Rotation is driven by motor in the spinning disk.
The sap cavity of above-mentioned dropping liquid nozzle is in cylinder, and the liquid outlet of bottom is tapered, and the inlet at top is in pagoda type joint.
The inlet tube of the inlet tape splicing peristaltic pump of above-mentioned dropping liquid nozzle.
Vortex pan bottom described above, motor shaft are respectively equipped with belt wheel,
Spinning disk is driven by motor shaft by wheel belt.
A kind of above-mentioned simulation aerosol generating device, further includes pedestal and dropping liquid bracket;
The pedestal is equipped with motor slot and vortex dish groove;
One end of dropping liquid bracket is fixed on the base, and the other end is equipped with the through-hole for accommodating dropping liquid nozzle, and is suspended at vortex dish groove Top.
Further, above-mentioned dropping liquid nozzle is fixed in through-hole by fastening screw.
It further, further include crane;
The pedestal using the elevating lever of crane as axis, fix by axis.
It further, further include the control device for controlling motor and peristaltic pump;The peristaltic pump is passed through by control device Stepper motor driving.
A kind of above-mentioned simulation aerosol generating device is suitable for Biohazard Safety Equipment leak detection and tests.
The invention has the beneficial effects that:
A kind of simulation aerosol generating device of the invention is particularly suitable for the test of Biohazard Safety Equipment leak detection, and device is by complete Metal material is made, and is not easy to damage;Its structure is simple, and assembling dismantles, is simple to operate, and simulation aerosol generation effect is good, By driving peristaltic pump and motor, simulation effect has certain controllability, complies with standard code requirement, has very strong reality With property and wide applicability.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of simulation aerosol generating device of the invention.
Fig. 2 is the structural schematic diagram of dropping liquid bracket of the invention (a is side view, and b is top view).
Fig. 3 is the structural schematic diagram of motor drive module of the invention.
Attached meaning marked in the figure is as follows: 1, motor, 2, big belt wheel, 3, pedestal, 4, elevating lever, 5, pedestal, 6, peristaltic pump, 7, wheel belt, 8, small pulley, 9, spinning disk, 10, dropping liquid nozzle, 11, dropping liquid bracket, 12, inlet, 13, fastening screw, 14, logical Hole.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
It is a kind of suitable for Biohazard Safety Equipment leak detection test simulation aerosol generating device, by 1 transmission module of motor, Nozzle dropping liquid module, rack module and control device composition.
1, motor drive module
Motor drive module is made of four parts: Double-head shaft-protruding drag cup miniature DC motor 1, synchronous pulley, rolling bearing And spinning disk 9.
Wherein, DC motor of the Double-head shaft-protruding drag cup miniature DC motor 1 using the pure import of maxon, front output shaft diameter For 3mm, axial length 13mm;Go out shaft diameter 3mm, axial length 15mm afterwards;Fuselage diameter 25mm, long 54mm.
There are three component parts for synchronous pulley: big belt wheel 2, wheel belt 7 and small pulley 8.
The rear shaft of Double-head shaft-protruding drag cup miniature DC motor 1 is inserted directly into the core wheel gap of big belt wheel 2, and passes through AB glue is fixed.
Spinning disk 9 is the spinning disk 9 that a diameter is 38mm, the super thin metal thin slice of thickness 0.1mm is formed, and passes through AB glue It is fixed on the axle cap for the T-type axis that a diameter is 6mm, the core wheel gap of long axis the insertion rolling bearing and small pulley 8 of T-type axis Place, is fixed by AB glue.
In this way, Double-head shaft-protruding drag cup miniature DC motor 1 drives synchronous pulley high-speed drive, driven by small pulley 8 Fixed 9 module high speed rotation of spinning disk.
2, nozzle dropping liquid module
There are two parts to form for nozzle dropping liquid module: 6 feed liquor component of dropping liquid nozzle 10 and peristaltic pump.
The sap cavity of dropping liquid nozzle 10 is in bar shape, and internal diameter 1.5mm, outer diameter 12.8mm, cylinder length are 11.2mm;Its The internal diameter of the pagoda type joint inlet 12 at top is 1.5mm, outer diameter 3.5mm, length 7mm;The taper liquid outlet of bottom Centrum length be 5.8mm, centrum liquid droping port diameter is 0.6mm.
Peristaltic pump feed liquor component is the inlet tube with peristaltic pump 6, and inlet tube is connect with pagoda type joint, and peristaltic pump 6 is by step Into motor driven.
3, rack module
Mainly there are two parts to form for rack module: dropping liquid bracket 11, pedestal 3 and crane.
The both ends setting motor slot and vortex dish groove of pedestal 3, accommodate 1 He of Double-head shaft-protruding drag cup miniature DC motor respectively Spinning disk 9 and its corresponding belt wheel;The tape track for accommodating wheel belt 7 is equipped between motor slot and vortex dish groove.
It is the nozzle installation through-hole 14 of 13mm that, which there is an internal diameter in 11 one end of dropping liquid bracket, and dropping liquid nozzle 10 passes through perforation through-hole The fastening screw 13 or AB glue of 14 side walls are directly anchored in through-hole 14.11 other end of dropping liquid bracket there are two rack mounting apertures, The corresponding position of pedestal 3 is mounted on by the shim liner of screw and a 0.1mm, so that nozzle installation through-hole 14 is suspended at spinning disk The top that the top of 9 slots, i.e. dropping liquid nozzle 10 are suspended at spinning disk 9.
Crane is made of pedestal 5 and elevating lever 4, L-shaped;The outer diameter of elevating lever 4 is 15mm, is highly 250mm;It rises It is 10mm that the bottom for dropping bar 4, which is equipped with an outer diameter, and length is the stud of 13mm, so that elevating lever 4 can be thread directly into pedestal 5 accordingly Screw hole in.Pedestal 3 is that 15mm mounting hole is directly installed on adjustment height bracket elevating lever 4 by opening an internal diameter, adjustment To suitable height, fixed by " T " fastening stud.
4, control device
Control device is responsible for the work of whole device, powers to Double-head shaft-protruding drag cup miniature DC motor 1 and drives peristaltic pump 6 Work.
Control device controls the power supply of Double-head shaft-protruding drag cup miniature DC motor 1, Double-head shaft-protruding drag cup minisize dc Motor 1 exports fixed revolving speed, by the ratio coverage of synchronous pulley, so that the control of 9 revolving speed of spinning disk is in 28000 ± 500 r/ min。
Control device drives peristaltic pump 6 to work by control stepper motor number of steps, soft to the elasticity conveying of peristaltic pump 6 Pipe alternately squeezes and releases to pump fluid, sectional " pillow " shape fluid is formed, according to code requirement, the present apparatus It is 10 minutes feed liquor 20ml that control circuit module, which drives the index of 6 feed liquor of peristaltic pump,.
When use:
Motor drive module is installed in the pedestal 3 of rack module;Pedestal 3 directly packs on elevating lever 4, and tightens fastening spiral shell Column is fixed;
Dropping liquid bracket 11 is mounted on to the corresponding place of pedestal 3, tightens screw;By the inlet tube and drop of 6 feed liquor component of peristaltic pump The inlet 12 of nozzle for liquid 10 connects, and device installs.
Start the test of Biohazard Safety Equipment leak detection, by a kind of mounted Biohazard Safety Equipment leak detection test simulation gas Colloidal sol generating device is placed among Biohazard Safety Equipment, the center of 9 core of spinning disk face interference cylinder above interference cylinder, whirlpool The forward position of flow table 9 is located at 100mm after Biohazard Safety Equipment front opening plane, and regulating device height to spinning disk 9 is opened with front Mouth top edge is horizontal.
Open control circuit module, spinning disk 9 keep the revolving speed rotation of 28000 ± 500 r/min, 6 inlet tube of peristaltic pump Feed flow is carried out to dropping liquid nozzle 10;Conical nozzle dripping completes aerosolization by high-speed rotating 9 moment of spinning disk Journey achievees the effect that simulate aerosol, so that liquor kalii iodide is able to aerosolization in test, is adequately distributed in biological peace In full cabinet.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation Technical solution is fallen within the scope of protection of the present invention.

Claims (9)

1. a kind of simulation aerosol generating device, which is characterized in that including spinning disk, dropping liquid nozzle;
The dropping liquid nozzle is suspended at the top of spinning disk, liquid outlet face spinning disk;
Rotation is driven by motor in the spinning disk.
2. a kind of simulation aerosol generating device according to claim 1, which is characterized in that the sap cavity of the dropping liquid nozzle In cylinder, the liquid outlet of bottom is tapered, and the inlet at top is in pagoda type joint.
3. a kind of simulation aerosol generating device according to claim 1, which is characterized in that the feed liquor of the dropping liquid nozzle The inlet tube of mouth tape splicing peristaltic pump.
4. a kind of simulation aerosol generating device according to claim 1, which is characterized in that spinning disk bottom Portion, motor shaft are respectively equipped with belt wheel,
Spinning disk is driven by motor shaft by wheel belt.
5. a kind of simulation aerosol generating device according to claim 1, which is characterized in that further include pedestal and dropping liquid branch Frame;
The pedestal is equipped with motor slot and vortex dish groove;
One end of dropping liquid bracket is fixed on the base, and the other end is equipped with the through-hole for accommodating dropping liquid nozzle, and is suspended at vortex dish groove Top.
6. a kind of simulation aerosol generating device according to claim 5, which is characterized in that the dropping liquid nozzle passes through tight Gu screw is fixed in through-hole.
7. a kind of simulation aerosol generating device according to claim 5, which is characterized in that further include crane;
The pedestal using the elevating lever of crane as axis, fix by axis.
8. -7 any a kind of simulation aerosol generating device according to claim 1, which is characterized in that further include control electricity The control device of machine and peristaltic pump;
The peristaltic pump is driven by control device by stepper motor.
9. a kind of simulation aerosol generating device according to claim 1, which is characterized in that let out suitable for Biohazard Safety Equipment Dew detection test.
CN201910534612.1A 2019-06-20 2019-06-20 Simulated aerosol generating device Pending CN110252217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910534612.1A CN110252217A (en) 2019-06-20 2019-06-20 Simulated aerosol generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910534612.1A CN110252217A (en) 2019-06-20 2019-06-20 Simulated aerosol generating device

Publications (1)

Publication Number Publication Date
CN110252217A true CN110252217A (en) 2019-09-20

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CN201910534612.1A Pending CN110252217A (en) 2019-06-20 2019-06-20 Simulated aerosol generating device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113145029A (en) * 2021-04-01 2021-07-23 中国人民解放军军事科学院军事医学研究院 Microbial aerosol generating device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525065A (en) * 2014-12-25 2015-04-22 西安交通大学医学院第二附属医院 Bisphosphate microbial aerosol generator
CN109675341A (en) * 2019-02-18 2019-04-26 济南阿尔瓦仪器有限公司 A kind of novel liquid-liquid abstraction instrument
CN210632085U (en) * 2019-06-20 2020-05-29 南京信息职业技术学院 Simulated aerosol generating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525065A (en) * 2014-12-25 2015-04-22 西安交通大学医学院第二附属医院 Bisphosphate microbial aerosol generator
CN109675341A (en) * 2019-02-18 2019-04-26 济南阿尔瓦仪器有限公司 A kind of novel liquid-liquid abstraction instrument
CN210632085U (en) * 2019-06-20 2020-05-29 南京信息职业技术学院 Simulated aerosol generating device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113145029A (en) * 2021-04-01 2021-07-23 中国人民解放军军事科学院军事医学研究院 Microbial aerosol generating device
CN113145029B (en) * 2021-04-01 2022-05-27 中国人民解放军军事科学院军事医学研究院 Microbial aerosol generating device

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Application publication date: 20190920