CN106323702A - Double-channel atmosphere constant flow sampler - Google Patents
Double-channel atmosphere constant flow sampler Download PDFInfo
- Publication number
- CN106323702A CN106323702A CN201610996768.8A CN201610996768A CN106323702A CN 106323702 A CN106323702 A CN 106323702A CN 201610996768 A CN201610996768 A CN 201610996768A CN 106323702 A CN106323702 A CN 106323702A
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- China
- Prior art keywords
- constant flow
- air
- sampler
- flow module
- dual pathways
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a double-channel atmosphere constant flow sampler which comprises two rotor flow meters, two miniature air pumps, two constant flow modules, one set of rechargeable batteries, one circuit control board and two filters. The device disclosed by the invention aims at unequal resistance of sampling pipes in the indoor air sampling process and utilizes an inner constant flow module device and precise flow limiting holes in the module to achieve the constant flow effect of air sampling, so that the sampling air within unit time is in equal volume and the specified standard requirement is met. The accurate, quick and convenient requirements of modern indoor sampling are met.
Description
Technical field
The present invention relates to the equipment of a kind of indoor air sampling, specifically, relate to a kind of air constant-flow sampling device.
Background technology
Along with the development of society, the requirement of living environment is improved constantly by people；Also there are relevant regulation, newly-built building in country
Dish is before completion, it is necessary to building Indoor Environment Detection, and various indoor air samplers arise at the historic moment, and air sampler is environment
Detection department carries out detecting instrument to atmospheric environment, lists the working measuring instrument of state compulsion calibrating catalogue in.
But major part sampler reply sampling tube difference resistance is difficult to constant current, sampling volume error in the unit interval
Greatly, existing sampler volume is big, power consumption, and noise is big, and price is high, and it is unstable, based on above reason, urgently that major part adopts device constant current
A kind of volume yet-to-be developed is little, energy-conservation, cheap and the air constant flow sampler of constant current.
Summary of the invention:
1. invention to solve the technical problem that
It is an object of the invention to overcome above-mentioned reply sampling tube resistance not etc. to cause the unstable skill of sampling constant current
Art problem, it is provided that middle dual pathways air constant flow sampler device, present configuration is compact, easy to operate, sampling in the unit interval
Volumetric errors is little.
2, the technical solution adopted in the present invention
A kind of dual pathways air constant flow sampler, the technical scheme of the core of the air constant flow sampler of the present invention is constant current
Module, this constant flow module uses mechanical type regulation.
The housing bottom of air constant flow sampler is provided with constant flow module, and constant flow module is provided with three connectors, air inlet to
Constant flow module air inlet, air inlet is sequentially connected with air pump, threeway, filter by silica gel tube, and the impurity in air is entered by filter
Row filters, and air pump provides power for air inlet.
Refluxing opening exceeds, in flowing out constant flow module, the excessive gas setting pressure, and refluxing opening passes through silica gel tube connecting tee,
Ensured that by refluxing opening the pressure in the cavity of constant flow module is constant.
Gas outlet is by constant flow module to metering device air inlet, and gas-metering device is spinner flowmeter, and gas outlet connects successively
Connect spinner flowmeter, needle-valve.
The constant voltage cavity of constant flow module is made up of the gel silica membrane of housing cavity and setting symmetrical above and below, described pellosil
Constant voltage cavity is surrounded into airtight space by sheet, and constant voltage inside cavity surrounding is one-body molded, and two laterally zygomorphic modules are covered
Covering the laterally zygomorphic open side at constant voltage cavity, constant voltage cavity and gel silica membrane surround an airtight space, described silica gel
Diaphragm is fixed by spring, and the gel silica membrane of the constant voltage cavity of further constant flow module is provided with nylon6 chips and supports, and spring connects
Housing and nylon6 chips；When the pressure in constant voltage cavity is higher than the force value set, the gas extrusion gel silica membrane in cavity, silicon
Glue film against the force of the spring, towards the outer side shifting of cavity, concedes the leakage port of refluxing opening, and gas flows out constant voltage by refluxing opening
Cavity.
Being provided with the accurate metering hole being connected with gas outlet in the cavity of constant flow module, accurate throttle orifice limits the stream of gas
Amount, accurate throttle orifice is connected with spinner flowmeter, and spinner flowmeter calculates the amount flowing through gas, and spinner flowmeter choke valve is adjustable
The flow of joint sample gas.
The dual pathways of patent of the present invention refers to that air constant flow sampler is provided with two duplicate constant flow modules, described
Two constant flow modules are equipped with gas outlet, refluxing opening, air inlet and the device being connected with above three mouth.Air Constant flow sample
The housing bottom of device is provided with rechargeable battery, and described rechargeable battery is fixedly arranged above motor, and constant flow module is fixed on above motor.
The housing front mounting circuit boards of constant flow module and control knob；Circuit is provided with under-voltage warning, battery fills
Full instruction, control panel is provided with regulation timing parameter.
3. beneficial effects of the present invention
Use the present invention to provide technical scheme, compared with existing known technology, there is following remarkable result: pin of the present invention
To indoor air sampling, overcome every sampling tube resistance, equal for sampling volume in guarantor unit's time, utilize machinery permanent
Flow module, by control panel clock control, has in significantly the most etc. not affected the unit interval by sampling tube resistance body of sampling
Long-pending.Comparing analog circuit control motor speed overcomes sampling tube difference resistance to regulate motor speed, and the present invention passes through machinery
Reaching the purpose of constant current, energy-conservation, be swift in response, operation is simple and reliable.Help to meet and constantly increase indoor sample requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of dual pathways air constant flow sampler.
Fig. 2 is the constant flow module structure chart of the present invention a kind of dual pathways air constant flow sampler.
Fig. 3 is the constant flow module internal module figure of the present invention a kind of dual pathways air constant flow sampler.
Reference is as follows:
1, casing 2, set of cells 3, control panel 4, spinner flowmeter 5, constant flow module 6, air pump 7, threeway 8, mistake
Filter 9, needle-valve 10, air inlet 11, refluxing opening 12, gas outlet 13, accurate metering hole 14, gel silica membrane 15, spring
16, constant voltage cavity, 17, relief port.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is further detailed explanation.
Embodiment 1
As it is shown in figure 1, one dual pathways air constant flow sampler of the present invention, described sampler includes casing 1, set of cells
2, control panel 3, spinner flowmeter 4, constant flow module 5, air pump 6 threeway 7, filter 8, needle-valve 9.
Installing set of cells 2 bottom casing 1, the most up install air pump 6, constant flow module 5, chain of command is installed in casing 1 front
Plate 3, casing 1 side installation spinner flowmeter 4, casing 1 top installation filter 8, air pump 6 and spinner flowmeter 4 pass through silica gel
Pipe connects, and control panel 3 controls air pump 6 working time；Described constant flow module 5 has three connectors, and two-way interface air inlet is even
Connecing air pump 6, gas is entered constant flow module 5 constant voltage constant voltage cavity 16 by air inlet 10, and constant voltage constant voltage cavity 16 is by gel silica membrane 14
Spring 15 keeps constant voltage, entrance excessive gas to be opened by gel silica membrane 14 and flow to threeway 7 by refluxing opening 11, and cavity gas passes through
Accurate metering hole 13 enters gas outlet 12 and enters spinner flowmeter 4, and effusion meter 4 lower end is provided with needle-valve 9, and rotation can regulate sampling
Throughput size.
As in figure 2 it is shown, constant flow module 5 is provided with three connectors, air inlet 10 passes through to constant flow module air inlet, air inlet 10
Silica gel tube is sequentially connected with air pump 6, threeway 7, filter 8；Refluxing opening 11 exceeds, in flowing out constant flow module 5, the many residual air setting pressure
Body, refluxing opening 5 is by silica gel tube connecting tee 7；Gas outlet 12 by constant flow module 5 to metering device air inlet, described gas outlet 12
It is sequentially connected with spinner flowmeter 4, needle-valve 9.
As it is shown on figure 3, the constant voltage cavity 16 of described constant flow module 5 is by housing cavity and the pellosil of setting symmetrical above and below
Sheet 14 forms, and constant voltage cavity is surrounded into airtight space by described gel silica membrane 14, and described gel silica membrane 14 is solid by spring 15
Fixed, it is provided with the accurate metering hole 13 being connected with gas outlet 12 in the constant voltage cavity 16 of described constant flow module 5.Described refluxing opening 11 exists
Being provided with relief port 17 in constant voltage cavity 16, shown relief port 17 is in close contact with gel silica membrane 14, the pressure in constant voltage cavity 16
It is that gel silica membrane is subjected to displacement laterally that power increases, and relief port 17 turns on, and the gas in constant voltage cavity 16 is entered by relief port
Refluxing opening 11, is entered three-way valve 7 by refluxing opening 11.
Casing 1 front is provided with control panel 3 and controls the sampling time, and spinner flowmeter 4 shows that uninterrupted, needle-valve 9 control
Uninterrupted.
Crossing range request according to atmospheric sampling, specific works process is as follows:
1. connect air sampler and sampling tube. the filter of sampling tube and air sampler it is connected by silica gel hose.
2. set the sampling time. pressing control panel plus-minus button, adjust the sampling time needed, the time is countdown side
Formula.
3. adjusting gas flow. rotary needle valve regulation sample gas flow number, exact flow rate can use soap film flowmeter
Correction auxiliary adjustment.
Starting air sampler. gas, through sampling tube (harmful substance in air is sampled tube packing absorption), passes through
Filter enters air pump, and extraction gas is pressed into constant flow module by air pump, and inside modules keeps cavity by the regulation of gel silica membrane
Air pressure inside constant, gas flows into spinner flowmeter, spinner flowmeter display current gas flow, discharge by accurate metering hole
In air.5. having sampled, the countdown concluded for clock, and pump quits work, and sampling completes.
The present embodiment uses different resistance, and the value that the dual pathways measures is as shown in table 1, and the result through above example is surveyed
Examination, overcomes different resistance, has good constant current effect.
Table 1
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also includes
The technical scheme being made up of above technical characteristic combination in any.
Claims (9)
1. a dual pathways air constant flow sampler, it is characterised in that: the housing bottom of described air constant flow sampler is provided with perseverance
Flow module, constant flow module is provided with three connectors, and air inlet is sequentially connected with gas to constant flow module air inlet, air inlet by silica gel tube
Pump, threeway, filter；Refluxing opening exceeds, in flowing out constant flow module, the excessive gas setting pressure, and refluxing opening is by silica gel tube even
Connect threeway；Gas outlet is sequentially connected with spinner flowmeter, needle-valve by constant flow module to metering device air inlet, described gas outlet；Described
The constant voltage cavity of constant flow module is made up of the gel silica membrane of housing cavity and setting symmetrical above and below, and described gel silica membrane is by constant voltage
Cavity surrounds into airtight space, and described gel silica membrane is fixed by spring, is provided with and gives vent to anger in the cavity of described constant flow module
The accurate metering hole that mouth connects.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: described air Constant flow sample
Device is provided with two same constant flow modules.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: described air Constant flow sample
The housing bottom of device is provided with rechargeable battery, and described rechargeable battery is fixedly arranged above motor, and constant flow module is fixed on above motor.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: the shell of described constant flow module
Body front mounting circuit boards and control knob.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: the perseverance of described constant flow module
The gel silica membrane of pressure cavity is provided with nylon6 chips and supports, and spring connects housing and nylon6 chips.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: described refluxing opening is in constant voltage
Inside cavity is provided with relief port, and relief port is in close contact with gel silica membrane.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: described circuit is provided with voltage
Undervoltage warning, battery are full of instruction.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: control panel is provided with regulation
Timing parameter.
A kind of dual pathways air constant flow sampler the most according to claim 1, it is characterised in that: spinner flowmeter choke valve
The flow of scalable sample gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996768.8A CN106323702A (en) | 2016-11-11 | 2016-11-11 | Double-channel atmosphere constant flow sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996768.8A CN106323702A (en) | 2016-11-11 | 2016-11-11 | Double-channel atmosphere constant flow sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106323702A true CN106323702A (en) | 2017-01-11 |
Family
ID=57817026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610996768.8A Pending CN106323702A (en) | 2016-11-11 | 2016-11-11 | Double-channel atmosphere constant flow sampler |
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| CN (1) | CN106323702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950086A (en) * | 2017-02-24 | 2017-07-14 | 北京雪迪龙科技股份有限公司 | The synchronous sample-leaving system of a kind of gas automatic safety sampling device, on-line monitoring and method |
Citations (7)
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|---|---|---|---|---|
| CN101858832A (en) * | 2009-04-13 | 2010-10-13 | 武汉市碧海云天环保科技有限责任公司 | Intelligent constant-flow individual air dust sampler and constant-flow control method |
| CN102353564A (en) * | 2011-06-16 | 2012-02-15 | 深圳国技仪器有限公司 | Individual sampler |
| CN202252209U (en) * | 2011-10-09 | 2012-05-30 | 德阳市科瑞仪器设备厂 | Passive constant flow device |
| CN103105319A (en) * | 2012-11-13 | 2013-05-15 | 青岛海颐天仪器有限公司 | Constant-temperature constant-flow continuous atmosphere sampler |
| CN103512778A (en) * | 2012-06-29 | 2014-01-15 | 北京市劳动保护科学研究所 | Physical compensation based gas constant flow device |
| US20160305415A1 (en) * | 2015-04-16 | 2016-10-20 | Ideal Industries, Inc. | Air sampler with closed loop flow control system |
| CN206223500U (en) * | 2016-11-11 | 2017-06-06 | 江苏京典自动化科技有限公司 | A kind of binary channels air constant flow sampler |
-
2016
- 2016-11-11 CN CN201610996768.8A patent/CN106323702A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858832A (en) * | 2009-04-13 | 2010-10-13 | 武汉市碧海云天环保科技有限责任公司 | Intelligent constant-flow individual air dust sampler and constant-flow control method |
| CN102353564A (en) * | 2011-06-16 | 2012-02-15 | 深圳国技仪器有限公司 | Individual sampler |
| CN202252209U (en) * | 2011-10-09 | 2012-05-30 | 德阳市科瑞仪器设备厂 | Passive constant flow device |
| CN103512778A (en) * | 2012-06-29 | 2014-01-15 | 北京市劳动保护科学研究所 | Physical compensation based gas constant flow device |
| CN103105319A (en) * | 2012-11-13 | 2013-05-15 | 青岛海颐天仪器有限公司 | Constant-temperature constant-flow continuous atmosphere sampler |
| US20160305415A1 (en) * | 2015-04-16 | 2016-10-20 | Ideal Industries, Inc. | Air sampler with closed loop flow control system |
| CN206223500U (en) * | 2016-11-11 | 2017-06-06 | 江苏京典自动化科技有限公司 | A kind of binary channels air constant flow sampler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950086A (en) * | 2017-02-24 | 2017-07-14 | 北京雪迪龙科技股份有限公司 | The synchronous sample-leaving system of a kind of gas automatic safety sampling device, on-line monitoring and method |
| CN106950086B (en) * | 2017-02-24 | 2019-06-14 | 北京雪迪龙科技股份有限公司 | A kind of gas automatic safety sampling device, on-line monitoring-synchronization sample-leaving system and method |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Zhengmei Inventor after: Yong Weibing Inventor before: Yong Weibing Inventor before: Li Zhengmei |
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| COR | Change of bibliographic data | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |