CN101974418A - Miniature personal microbial air sampler - Google Patents

Miniature personal microbial air sampler Download PDF

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Publication number
CN101974418A
CN101974418A CN2010105176308A CN201010517630A CN101974418A CN 101974418 A CN101974418 A CN 101974418A CN 2010105176308 A CN2010105176308 A CN 2010105176308A CN 201010517630 A CN201010517630 A CN 201010517630A CN 101974418 A CN101974418 A CN 101974418A
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China
Prior art keywords
air
sampling
flow sensor
diaphragm pump
flow
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Pending
Application number
CN2010105176308A
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Chinese (zh)
Inventor
李劲松
何春雷
李娜
杨晓平
郭亮
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Qingdao Junray Intelligent Instrument Co Ltd
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Qingdao Junray Intelligent Instrument Co Ltd
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Priority to CN2010105176308A priority Critical patent/CN101974418A/en
Publication of CN101974418A publication Critical patent/CN101974418A/en
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Abstract

The invention relates to the technical field of microbial air sampling, in particular to a miniature personal microbial air sampler. The invention is characterized in that the sampler mainly comprises a gas circuit part (1), a power source part (2), a signal processing part (3) and a mechanical part (4), wherein a sampling head of the gas circuit part adopts a microporous membrane filter, and a membrane is arranged in the microporous membrane filter. The invention mainly solves the problem that the current samplers are large in volume and has heavy weight arising from only using an alternating current (AC) power to carry out power supply, therefore, the current samplers are inconvenient to carry by workers, and the sampling sites and environments thereof are greatly restricted. The invention has the advantages of easy carrying, small volume, light weight, high sampling efficiency, and accurate and reliable monitoring results.

Description

The micro-personal air microorganism sampler
Technical field
The present invention relates to the technical field of air microbe sampling, especially relate to the personal air microorganism sampler of a kind of minitype portable.
Background technology
Exist various microorganisms in the air, these microbial bacterials have very big relation with our living environment, and sampling of microorganism and analysis are more and more important concerning us.For this reason, both at home and abroad air microorganism sampler is studied, the patent No. is: 200720005287.2, name is called: a kind of hand-held air microorganism sampler, the patent No. is: 200720005288.7, name is called a kind of multi-staged air microorganism sampler, the patent No. is: 200720140530.1, name is called: a kind of multi-slit type air microorganism sampler, the patent No. is: 200820123357.9, name is called a kind of mass flow air microorganism sampling device, the patent No. is: 200920225914.2, name is called: the Chinese utility model patent of full automatic microorganism sampler all discloses air microorganism sampler.But regrettably: air microorganism sampler of the prior art only adopts Alternating Current Power Supply, big, the Heavy Weight of volume, the staff carries very inconvenient, sampling position and environment are very restricted, this traditional sample mode is because the limitation of its sampling, not only there is very big potential hazard in the personnel safety to the experimenter, and can not well represent the legitimate reading of the microbial environment in a zone.On the other hand, in the air filter of air sampler of the prior art, filtering membrane is arranged on the ingress usually, so filtrated air effectively can not be obtained active data.Another aspect, in the prior art, pulse pneumatic is very big to the influence of flow detection sensor, can make the measuring result distortion.
Summary of the invention
The present invention improves the defective of prior art, and it can be carried by the staff, the anywhere sampling, has solved the problem of real-time, intelligent, random reconnaissance sampling.The present invention is achieved through the following technical solutions:
The micro-personal air microorganism sampler, it is characterized in that it mainly be by: air path part 1, supplying unit 2, signal processing 3 and mechanical part 4 are constituted; Air path part includes millipore filtration device 11, air filter 12, flow sensor 13, snubber 14, dual head diaphragm pump 15 and temperature sensor 16; Supplying unit includes Alternating Current Power Supply and charging unit 21, power switch 23, charging inlet 24 and high power lithium battery 22, and described power switch 23, charging inlet 24 are positioned at the same side of sampling thief; Signal processing includes microprocessor 31, display unit 33 and pushbutton unit 34, described microprocessor 31 is positioned at sampling thief inside, display unit 24, pushbutton unit 34 are positioned on the panel in sampling thief front, and display unit 24 is positioned at the top of pushbutton unit 34; Described millipore filtration device 11 mainly is made up of inlet mouth 111, filter membrane 112, air outlet 113 and support fixed interface 114, described inlet mouth 111 tops are openings, its underpart connects filter membrane 112, air outlet 113 is positioned at the below of filter membrane 112 and both communicate, described filter membrane 112 is positioned at millipore filtration device inside, and described support fixed interface 114 is positioned at the bottom of millipore filtration device; Mechanical part mainly is made up of bleeding point 30, temperature-measuring port 32, air-capacitor 38 and high power lithium battery 39, described bleeding point 30, temperature-measuring port 32 are positioned at the top of sampling thief, described air-capacitor 38 and high power lithium battery 39 are positioned at sampling thief inside, air-capacitor 38 is positioned at high power lithium battery 39 tops, and high power lithium battery 39 is positioned at the place, nearly bottom surface of sampling thief inside; The place, gas inlet of millipore filtration device 11 tops enters sample gas, the bleeding point place of air filter 12 is received in the air outlet, bottom of millipore filtration device 11, the exit of air filter 12 connects flow sensor 13, flow sensor 13 back termination snubbers 14, the gas of snubber 14 outputs enters dual head diaphragm pump 15, flow sensor 13 and be installed in data that the temperature sensor 16 at gas inlet place gathers and be input to microprocessor 31 and analyze, microprocessor 31 with analytical results with set by pushbutton unit 34, and the rotating speed of control dual head diaphragm pump 15 is regulated after the value that display unit 33 shows compares; Described flow sensor 13, snubber 14, dual head diaphragm pump 15 all are positioned at sampling thief inside, and flow sensor 13, dual head diaphragm pump 15 all are positioned at the top of air-capacitor 38.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described flow sensor is a mass flow sensor; Be used to measure the instantaneous delivery of gathering air-flow.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described dual head diaphragm pump is big flow and high negative pressure type.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described Alternating Current Power Supply and charging unit are dismountable; Can be only with high power lithium battery power supply, weight reduction greatly.
Principle of the present invention is such: in instrument when work,, ambient air is through special-purpose sampling head, i.e. millipore filtration device, and the aerosol that contains microorganism resides in the sampling carrier in the time of whole pipeline.Temperature sensor is gathered the temperature of the environmental gas of surveying, flow sensor is measured the instantaneous delivery of gathering air-flow, these transmitters are delivered to the numerical value that collects in the microprocessor, microprocessor is regulated the rotating speed of dual head diaphragm pump according to flux values of setting and the present flow rate that calculates, the flow of actual samples is remained with the flow of setting equate.Can produce slight fluctuation to sampling flow owing to produce pulsation during dual head diaphragm pump work, between dual head diaphragm pump and flow sensor, seal in a snubber, effectively eliminate the influence of pulse pneumatic, make flow more steady, reach better sample effect flow detection sensor.Adopt the supplied by AC/DC electricity system among the present invention, under the non-existent situation of alternating-current, the high-performance lithium ion battery of instrument internal can be powered to instrument automatically.Advanced electric power management circuit reliably makes instrument carry out the supplied by AC/DC electricity switching very easily, reaches five hours but battery once is full of the electricity non-stop run, guarantees that the user samples to the environment aerosol very easily.After the user was provided with parameters such as the flux values that needs and sampling time by pushbutton unit, treater started dual head diaphragm pump, regularly reads the flux values of under meter, through after the specific conversion, real-time traffic is shown.If the flow of real-time traffic and setting is different, treater is adjusted automatically to the rotating speed of pump, and the flow of real-time demonstration flow and setting is equated, reach sampling time of setting after instrument stop sampling automatically.In this process, the operator can manually stop and restarting sampling at any time.Among the present invention,, be more convenient for carrying because self-contained battery can be powered.So the staff carries, the anywhere sampling, has solved the problem of real-time, intelligent, random reconnaissance sampling.
The present invention compares with existing sampling thief, and its advantage is:
1, volume of the present invention is small and exquisite, and is in light weight, only is 500g, can be worn on one's body the staff, and the microbe species and the quantity that are touched of monitoring personnel at any time, its test data is more representative.
2, existing sampling thief does not generally all have the automatic flow Controlling System, and when the sampling load changed, sampling flow can change, and influences the measuring result precision; The present invention adopts the mass flowmeter that volume is little, precision is high, the flow accuracy height of measurement.And inner high speed processor and high-precision flow and the pressure transmitter of adopting carries out closed-loop control to flow, makes flow accurately stable, guaranteed measuring accuracy.
3, existing sampling thief generally only adopts Alternating Current Power Supply, drags to connect power supply temporarily, and operation inconvenience can not be used in the place that does not have AC outlet.The micro-personal air microorganism sampler adopts high-level efficiency double end miniature diaphragm pump, and advanced power-supply management system, guarantees the long working hour, can carry out sampling work anywhere or anytime.
4, the present invention adopts special-purpose sampling head, and promptly the millipore filtration device is sampled, owing to increased filter membrane, and filter membrane is positioned at millipore filtration device inside, so sample gas is filtering cleaner, the data of collection are more accurate.
5, between dual head diaphragm pump and flow sensor, seal in a snubber among the present invention, eliminate the influence of pulse pneumatic effectively, make flow more steady, reached better sample effect flow detection sensor.
The present invention has following beneficial effect: portable, volume is little, in light weight, collecting efficiency is high, monitoring result accurately and reliably.
Description of drawings
Fig. 1 is a functional block diagram of the present invention;
Fig. 2 is an air filter cross-sectional view of the present invention;
Fig. 3 is a front view of the present invention;
Fig. 4 is an internal structure synoptic diagram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment
See also Fig. 1 to Fig. 4, the micro-personal air microorganism sampler, it is characterized in that it mainly be by: air path part 1, supplying unit 2, signal processing 3 and mechanical part 4 are constituted; Air path part includes millipore filtration device 11, air filter 12, flow sensor 13, snubber 14, dual head diaphragm pump 15 and temperature sensor 16; Supplying unit includes Alternating Current Power Supply and charging unit 21, power switch 23, charging inlet 24 and high power lithium battery 22, and described power switch 23, charging inlet 24 are positioned at the same side of sampling thief; Signal processing includes microprocessor 31, display unit 33 and pushbutton unit 34, described microprocessor 31 is positioned at sampling thief inside, display unit 24, pushbutton unit 34 are positioned on the panel in sampling thief front, and display unit 24 is positioned at the top of pushbutton unit 34; Described millipore filtration device 11 mainly is made up of inlet mouth 111, filter membrane 112, air outlet 113 and support fixed interface 114, described inlet mouth 111 tops are openings, its underpart connects filter membrane 112, air outlet 113 is positioned at the below of filter membrane 112 and both communicate, described filter membrane 112 is positioned at millipore filtration device inside, and described support fixed interface 114 is positioned at the bottom of millipore filtration device; Mechanical part mainly is made up of bleeding point 30, temperature-measuring port 32, air-capacitor 38 and high power lithium battery 39, described bleeding point 30, temperature-measuring port 32 are positioned at the top of sampling thief, described air-capacitor 38 and high power lithium battery 39 are positioned at sampling thief inside, air-capacitor 38 is positioned at high power lithium battery 39 tops, and high power lithium battery 39 is positioned at the place, nearly bottom surface of sampling thief inside; The place, gas inlet of millipore filtration device 11 tops enters sample gas, the bleeding point place of air filter 12 is received in the air outlet, bottom of millipore filtration device 11, the exit of air filter 12 connects flow sensor 13, flow sensor 13 back termination snubbers 14, the gas of snubber 14 outputs enters dual head diaphragm pump 15, flow sensor 13 and be installed in data that the temperature sensor 16 at gas inlet place gathers and be input to microprocessor 31 and analyze, microprocessor 31 with analytical results with set by pushbutton unit 34, and the rotating speed of control dual head diaphragm pump 15 is regulated after the value that display unit 33 shows compares; Described flow sensor 13, snubber 14, dual head diaphragm pump 15 all are positioned at sampling thief inside, and flow sensor 13, dual head diaphragm pump 15 all are positioned at the top of air-capacitor 38.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described flow sensor is a mass flow sensor; Be used to measure the instantaneous delivery of gathering air-flow.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described dual head diaphragm pump is big flow and high negative pressure type.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described display unit is the digital pilot lamp of liquid crystal display or LED.
Above-mentioned described micro-personal air microorganism sampler is characterized in that described Alternating Current Power Supply and charging unit are dismountable; Can be only with high power lithium battery power supply, weight reduction greatly.
Principle of the present invention is such: in instrument when work,, ambient air is through special-purpose sampling head, i.e. millipore filtration device, and the aerosol that contains microorganism resides in the sampling carrier in the time of whole pipeline.Temperature sensor is gathered the temperature of the environmental gas of surveying, flow sensor is measured the instantaneous delivery of gathering air-flow, these transmitters are delivered to the numerical value that collects in the microprocessor, microprocessor is regulated the rotating speed of dual head diaphragm pump according to flux values of setting and the present flow rate that calculates, the flow of actual samples is remained with the flow of setting equate.Can produce slight fluctuation to sampling flow owing to produce pulsation during dual head diaphragm pump work, between dual head diaphragm pump and flow sensor, seal in a snubber, effectively eliminate the influence of pulse pneumatic, make flow more steady, reach better sample effect flow detection sensor.Adopt the supplied by AC/DC electricity system among the present invention, under the non-existent situation of alternating-current, the high-performance lithium ion battery of instrument internal can be powered to instrument automatically.Advanced electric power management circuit reliably makes instrument carry out the supplied by AC/DC electricity switching very easily, reaches five hours but battery once is full of the electricity non-stop run, guarantees that the user samples to the environment aerosol very easily.After the user was provided with parameters such as the flux values that needs and sampling time by pushbutton unit, treater started dual head diaphragm pump, regularly reads the flux values of under meter, through after the specific conversion, real-time traffic is shown.If the flow of real-time traffic and setting is different, treater is adjusted automatically to the rotating speed of pump, and the flow of real-time demonstration flow and setting is equated, reach sampling time of setting after instrument stop sampling automatically.In this process, the operator can manually stop and restarting sampling at any time.
The present invention compares with existing sampling thief, and its advantage is:
1, volume of the present invention is small and exquisite, and is in light weight, only is 500g, can be worn on one's body the staff, and the microbe species and the quantity that are touched of monitoring personnel at any time, its test data is more representative.
2, existing sampling thief does not generally all have the automatic flow Controlling System, and when the sampling load changed, sampling flow can change, and influences the measuring result precision; The present invention adopts the mass flowmeter that volume is little, precision is high, the flow accuracy height of measurement.And inner high speed processor and high-precision flow and the pressure transmitter of adopting carries out closed-loop control to flow, makes flow accurately stable, guaranteed measuring accuracy.
3, existing sampling thief generally only adopts Alternating Current Power Supply, drags to connect power supply temporarily, and operation inconvenience can not be used in the place that does not have AC outlet.The micro-personal air microorganism sampler adopts high-level efficiency double end miniature diaphragm pump, and advanced power-supply management system, guarantees the long working hour, can carry out sampling work anywhere or anytime.
4, the present invention adopts special-purpose sampling head, and promptly the millipore filtration device is sampled, owing to increased filter membrane, and filter membrane is positioned at millipore filtration device inside, so sample gas is filtering cleaner, the data of collection are more accurate.
5, between dual head diaphragm pump and flow sensor, seal in a snubber among the present invention, eliminate the influence of pulse pneumatic effectively, make flow more steady, reached better sample effect flow detection sensor.
The present invention has following beneficial effect: portable, volume is little, in light weight, collecting efficiency is high, monitoring result accurately and reliably.
The present invention can be applied to scientific experiment research and wait other conceivable a plurality of fields.
The present invention is not limited to above-mentioned preferred forms, should be appreciated that design of the present invention can be by other various forms enforcement utilizations, and they drop in protection scope of the present invention equally.

Claims (4)

1. micro-personal air microorganism sampler, it is characterized in that it mainly be by: air path part (1), supplying unit (2), signal processing (3) and mechanical part (4) are constituted; Air path part includes millipore filtration device (11), air filter (12), flow sensor (13), snubber (14), dual head diaphragm pump (15) and temperature sensor (16); Supplying unit includes Alternating Current Power Supply and charging unit (21), power switch (23), charging inlet (24) and high power lithium battery (22), and described power switch (23), charging inlet (24) are positioned at the same side of sampling thief; Signal processing includes microprocessor (31), display unit (33) and pushbutton unit (34), described microprocessor (31) is positioned at sampling thief inside, display unit (24), pushbutton unit (34) are positioned on the panel in sampling thief front, and display unit (24) is positioned at the top of pushbutton unit (34); Described millipore filtration device (11) mainly is made up of inlet mouth (111), filter membrane (112), air outlet (113) and support fixed interface (114), described inlet mouth (111) top is opening, its underpart connects filter membrane (112), air outlet (113) is positioned at the below of filter membrane (112) and both communicate, described filter membrane (112) is positioned at millipore filtration device inside, and described support fixed interface (114) is positioned at the bottom of millipore filtration device; Mechanical part mainly is made up of bleeding point (30), temperature-measuring port (32), air-capacitor (38) and high power lithium battery (39), described bleeding point (30), temperature-measuring port (32) are positioned at the top of sampling thief, described air-capacitor (38) and high power lithium battery (39) are positioned at sampling thief inside, air-capacitor (38) is positioned at high power lithium battery (39) top, and high power lithium battery (39) is positioned at the place, nearly bottom surface of sampling thief inside; The place, gas inlet of millipore filtration device (11) top enters sample gas, the bleeding point place of air filter (12) is received in the air outlet, bottom of millipore filtration device (11), the exit of air filter (12) connects flow sensor (13), flow sensor (13) back termination snubber (14), the gas of snubber (14) output enters dual head diaphragm pump (15), flow sensor (13) and be installed in the data that the temperature sensor (16) at gas inlet place gathers and be input to microprocessor (31) analysis, microprocessor (31) with analytical results with set by pushbutton unit (34), and the rotating speed of control dual head diaphragm pump (15) is regulated after the value that display unit (33) shows compares; Described flow sensor (13), snubber (14), dual head diaphragm pump (15) all are positioned at sampling thief inside, and flow sensor (13), dual head diaphragm pump (15) all are positioned at the top of air-capacitor (38).
2. micro-personal air microorganism sampler according to claim 1, its feature are the mass flow sensor that is used to measure the instantaneous delivery of gathering air-flow at described flow sensor.
3. micro-personal air microorganism sampler according to claim 1, its feature is big flow and high negative pressure type in described dual head diaphragm pump.
4. micro-personal air microorganism sampler according to claim 1, its feature is the digital pilot lamp of liquid crystal display or LED at described display unit.
CN2010105176308A 2010-10-24 2010-10-24 Miniature personal microbial air sampler Pending CN101974418A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154095A (en) * 2010-12-24 2011-08-17 中国人民解放军海军潜艇学院 Air microorganism sampling device
CN102199527A (en) * 2011-04-15 2011-09-28 苏州苏净仪器自控设备有限公司 Online multipoint microorganism collection system
CN102220235A (en) * 2011-04-15 2011-10-19 苏州苏净仪器自控设备有限公司 Sampling head of microbial sampler
CN103966081A (en) * 2014-05-09 2014-08-06 北京联合大学 Negative-pressure filter membrane microbial sampler
CN114045217A (en) * 2022-01-11 2022-02-15 至美时代生物智能科技(北京)有限公司 Air microorganism sampling device and air microorganism sampling and detecting integrated device
CN116875438A (en) * 2023-09-06 2023-10-13 杭州浩邦生物科技有限公司 Microorganism sampling detection device in environment

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154095A (en) * 2010-12-24 2011-08-17 中国人民解放军海军潜艇学院 Air microorganism sampling device
CN102154095B (en) * 2010-12-24 2013-06-19 中国人民解放军海军潜艇学院 Air microorganism sampling device
CN102199527A (en) * 2011-04-15 2011-09-28 苏州苏净仪器自控设备有限公司 Online multipoint microorganism collection system
CN102220235A (en) * 2011-04-15 2011-10-19 苏州苏净仪器自控设备有限公司 Sampling head of microbial sampler
CN102220235B (en) * 2011-04-15 2013-07-31 苏州苏净仪器自控设备有限公司 Sampling head of microbial sampler
CN103966081A (en) * 2014-05-09 2014-08-06 北京联合大学 Negative-pressure filter membrane microbial sampler
CN103966081B (en) * 2014-05-09 2015-12-09 北京联合大学 A kind of negative pressure filter membrane microorganism sampler
CN114045217A (en) * 2022-01-11 2022-02-15 至美时代生物智能科技(北京)有限公司 Air microorganism sampling device and air microorganism sampling and detecting integrated device
CN114045217B (en) * 2022-01-11 2022-04-19 至美时代生物智能科技(北京)有限公司 Air microorganism sampling device and air microorganism sampling and detecting integrated device
CN116875438A (en) * 2023-09-06 2023-10-13 杭州浩邦生物科技有限公司 Microorganism sampling detection device in environment
CN116875438B (en) * 2023-09-06 2023-11-21 杭州浩邦生物科技有限公司 Microorganism sampling detection device in environment

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Open date: 20110216