CN208366681U - Surrounding air dioxin sampling instrument - Google Patents
Surrounding air dioxin sampling instrument Download PDFInfo
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- CN208366681U CN208366681U CN201820867316.4U CN201820867316U CN208366681U CN 208366681 U CN208366681 U CN 208366681U CN 201820867316 U CN201820867316 U CN 201820867316U CN 208366681 U CN208366681 U CN 208366681U
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- hollow pipe
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- flowmeter
- gas chamber
- surrounding air
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Abstract
The utility model provides a kind of surrounding air dioxin sampling instrument, air resistance and equipment noise when reducing sampling.The surrounding air dioxin sampling instrument, including host, sampling head, flow meter assembly, fan assembly, environment temperature sensor and pressure flow sensor, flow meter assembly includes flowmeter gas chamber, counts warm component, a positive pressure hollow pipe and a negative pressure hollow pipe, the tube body windward side positioned at flowmeter plenum interior of positive pressure hollow pipe is equipped with the pressure port of perforation, and the tube body leeward positioned at flowmeter plenum interior of negative pressure hollow pipe is equipped with the pressure port of perforation；Positive pressure hollow pipe outer end is tightly connected the positive pressure pressure-tapping nozzle of pressure flow sensor, and negative pressure hollow pipe outer end is tightly connected the negative pressure pressure-tapping nozzle of pressure flow sensor.Its flowmeter approximation pitot tube type differential pressure flowmeter of the utility model does not increase system resistance while can guarantee measurement differential pressure stability, then sampling pump workload is small when same traffic, reduces running noise under same traffic.
Description
Technical field
The utility model relates to the gas sampling technologies fields in enviromental protection instrument, and in particular to air dioxin sampling instrument
Structure is improved.
Background technique
The working environment of surrounding air dioxin sampling instrument is mostly apart from the closer place in residential block, then to the low of sampling instrument
Noise requirements are higher；And monitoring surrounding air dioxin, the sampling volume needed about 1000m3, then the sampling time is longer, into one
It is urgent to walk the demand improved to the sampling instrument of big flow low noise.
The primary structure composition of surrounding air dioxin sampling instrument generally includes sampling head (including filter membrane component and absorption group
Part) and host, mounting portion, flowmeter, fan assembly and temperature sensor with sampling head cooperation are provided with to measure on host
Environment temperature.In the prior art, the flow measurement of surrounding air dioxin sampling instrument mostly uses orifice differential pressure flowmeter, leads to
Air-flow calculates the flow by orifice plate by differential pressure caused by orifice plate when crossing motor operation, pumps control electricity by adjusting
Pressure adjusts revolution speed, to reach the flow of setting, for orifice differential pressure flowmeter when differential pressure is smaller, output pulsation is larger, from
And cause calculated flowed fluctuation larger, to reduce flowed fluctuation, orifice-plate flowmeter institute energy when need to just improve same traffic
The differential pressure got, also just necessarily results in the increase of system resistance, so that the revolving speed of sampling pump and power consumption be made to be promoted, operating is made an uproar
Sound can also correspondingly increase；Meanwhile the sampling flow of surrounding air dioxin sampling instrument is inlet flow rate, the control of the flow with
Environment temperature is closely related, and existing the type sampling instrument, environment temperature sensor are generally located on sampling instrument host shell
On outer surface, measured environment temperature can be influenced by produced heat in host operational process and extraneous direct sunlight shadow
It rings, ambient temperature measurement is made to generate deviation, to influence the control of sampling flow, sampling flow is made to generate relatively large deviation；
Furthermore the sampling head part (including filter membrane component and absorbent module) of sampling instrument is seperated design with the host machine part of sampling instrument,
It is mounted on host when in use, for easy to carry and installation, sampling head portion size is smaller, and correspondingly, filter membrane size is smaller,
When same traffic samples, filter membrane size is smaller, and air resistance is bigger.
Utility model content
The utility model provides a kind of surrounding air dioxin sampling instrument, air resistance and equipment noise when reducing sampling.
To reach above-mentioned technical purpose, the utility model is achieved using following technical scheme: a kind of surrounding air two
English sampling instrument is disliked, is tightly connected including host, sampling head, the flow meter assembly being tightly connected with sampling head and flow meter assembly
Fan assembly, environment temperature sensor and pressure flow sensor, the host includes shell and the cavity that is surrounded by shell,
The flow meter assembly and fan assembly setting are in the cavity；The flow meter assembly includes the tubular flow for erectting setting
Gas chamber, temperature component, a positive pressure hollow pipe and a negative pressure hollow pipe based on detection stream meter gas chamber temperature are counted, the positive pressure is empty
Core pipe is parallel with the negative pressure hollow pipe and is oppositely arranged up and down, and is plugged in the circumferential side wall of the flowmeter gas chamber,
It plugs position and is respectively provided with sealing element；The inner end of the positive pressure hollow pipe and the negative pressure hollow pipe is all closed and is located at the flow
The inside of gas chamber is counted, outer end is open and is respectively positioned on outside the flowmeter gas chamber；The positive pressure hollow pipe is located at the flow
The tube body windward side for counting plenum interior is equipped with the pressure port of perforation, and the negative pressure hollow pipe is located in the flowmeter gas chamber
The tube body leeward in portion is equipped with the pressure port of perforation；The outer end of the positive pressure hollow pipe is tightly connected the flow pressure sensing
The outer end of the positive pressure pressure-tapping nozzle of device, the negative pressure hollow pipe is tightly connected the negative pressure pressure-tapping nozzle of the pressure flow sensor.
Central axis of the central axis of the positive pressure hollow pipe and the negative pressure hollow pipe with the flowmeter gas chamber
It intersects vertically.
Hollow pipe fixed plate, the positive pressure hollow pipe and the negative pressure are installed in the circumferential side wall of the flowmeter gas chamber
The outer end of hollow pipe is pierced by the hollow pipe fixed plate and is welded to connect with the hollow pipe fixed plate.
The warm component of the meter includes temperature sensor and fixed plate, and the temperature sensor is installed in the fixed plate,
The circumferential side wall of the flowmeter gas chamber is equipped with the mounting hole with the warm component cooperation of the meter, and the fixed plate is installed in described
In the circumferential side wall of flowmeter gas chamber and the temperature sensor is embedded in the inside of the flowmeter gas chamber, the fixed plate and institute
It states and sealing element is set between mounting hole.
The upper end of the flowmeter gas chamber is connected with mounting plate, and the periphery of the mounting plate is fixed on the interior of the shell
Wall.
The lower end of the flowmeter gas chamber has necking part, and the suction nozzle sealing of the necking part and the fan assembly connects
It connects.
The sampling head is integrally mounted in the cavity, and in the top of the flow meter assembly and the flowmeter group
Part connection, the sampling head includes filter membrane component and the absorption cartridge module below filter membrane component, the filter membrane component and institute
Absorption cartridge module is stated to be connected by funnel-form switching cylinder positioned there between, the upper end edge great Kou of the funnel-form switching cylinder with
The edge of the filter membrane component is corresponding to be tightly connected, the lower end osculum edge and the absorbing cylinder of the funnel-form switching cylinder
The upper end opening of component is tightly connected, and the lower ending opening of the absorption cartridge module and the upper end of the flowmeter gas chamber seal and connect
It connects.
The upper junction plate of annular is installed on the inner wall of the shell, the funnel-form switching cylinder passes through the upper junction plate
And the big mouth overlapping edges in upper end of the funnel-form switching cylinder are on the upper junction plate, the edge of the filter membrane component and
The upper end edge great Kou of the funnel-form switching cylinder is removably connected on the upper junction plate by top opening nut.
The shell is equipped with circumstance temperature sensor mounting hole, is equipped with forced draft fans at the circumstance temperature sensor mounting hole,
The environment temperature sensor is mounted on the air draught side of the forced draft fans.
The upper end opening of the shell, and opening is equipped with shield.
In the utility model surrounding air dioxin sampling instrument, flow meter assembly includes the drum flow meter for erectting setting
Gas chamber, temperature component, a positive pressure hollow pipe and a negative pressure hollow pipe based on detection stream meter gas chamber temperature, the positive pressure hollow
It manages parallel with the negative pressure hollow pipe and is oppositely arranged up and down, and be plugged in the circumferential side wall of the flowmeter gas chamber, insert
If position is respectively provided with sealing element；The inner end of the positive pressure hollow pipe and the negative pressure hollow pipe is all closed and is located at the flowmeter
The inside of gas chamber, outer end is open and is respectively positioned on outside the flowmeter gas chamber；The positive pressure hollow pipe is located at the flowmeter
The tube body windward side of plenum interior is equipped with the pressure port of perforation, and the negative pressure hollow pipe is located at the flowmeter plenum interior
Tube body leeward be equipped with perforation pressure port；Air-flow from top to bottom flows through in drum flow meter gas chamber, flows through positive pressure sky
Core pipe and negative pressure hollow pipe are divided into face air-flow and divide back to air-flow, the outer end of positive pressure hollow pipe and the outer end of negative pressure hollow pipe
Not Mi Fenglianjie pressure flow sensor positive pressure pressure-tapping nozzle and negative pressure pressure-tapping nozzle, count warm component measurable flow through flowmeter gas chamber
The temperature of interior gas can calculate flow velocity according to temperature and pressure, to achieve the purpose that measure flow velocity；The principle of the flowmeter
Approximate pitot tube type differential pressure flowmeter does not increase the resistance of system while this kind of flowmeter can guarantee measurement differential pressure stability,
When to make same traffic, the workload of sampling pump is small, reduces the running noise under same traffic.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model surrounding air dioxin sampling instrument；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is the A-A direction view of Fig. 2；
Fig. 4 is the structural schematic diagram of the flow meter assembly of the utility model surrounding air dioxin sampling instrument；
Fig. 5 is the cross-sectional view (axis of cutting plane overcurrent meter gas chamber and the axis of hollow pipe) of Fig. 4；
Fig. 6 is the portion the I schematic enlarged-scale view of Fig. 5.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings and detailed description.
Referring to figs. 1 to Fig. 3, a kind of surrounding air dioxin sampling instrument, including host 100, sampling head 200 and sampling head
200 flow meter assemblies 300 being tightly connected and the fan assembly 400 of the sealed connection of flow meter assembly 300, environment temperature sense
Device 500 and pressure flow sensor (not shown)；Host 100 includes shell 110 and the cavity 120 surrounded by shell 110,
Flow meter assembly 300 and fan assembly 400 are arranged in cavity 120；Referring to Fig. 3 to Fig. 6, flow meter assembly 300 includes erectting
The drum flow meter gas chamber 310 of setting, temperature component 320,330 and of a positive pressure hollow pipe based on detection stream meter gas chamber temperature
One negative pressure hollow pipe 340, positive pressure hollow pipe 330 is parallel with negative pressure hollow pipe 340 and is oppositely arranged up and down, and the two is plugged in
It in the circumferential side wall of flowmeter gas chamber 310, plugs position and is respectively provided with sealing element, is i.e. hollow pipe and flowmeter gas chamber 310 plugs
Matching part setting sealing ring or sealant realize the sealing for plugging position；Positive pressure hollow pipe 330 and negative pressure hollow pipe 340 it is interior
End is all closed and is located at the inside of flowmeter gas chamber 310, and outer end is open and is respectively positioned on outside flowmeter gas chamber 310, i.e., positive pressure is empty
Core pipe 330 and negative pressure hollow pipe 340 are that one section of tube body is located inside flowmeter gas chamber 310, and remaining one section of tube body is located at flow
Count the outside of gas chamber 310；(air-flow exists for the windward side for that section of tube body of positive pressure hollow pipe 330 being located inside flowmeter gas chamber 310
From top to bottom flowed through in drum flow meter gas chamber 310, in airflow direction such as Fig. 5 and Fig. 6 in drum flow meter gas chamber 310 vertically to
Under arrow direction, flow through positive pressure hollow pipe 330, the upper surface face air-flow of positive pressure hollow pipe 330, referred to as windward side) on set
There are the pressure port 331 of perforation, the leeward (air-flow for that section of tube body of negative pressure hollow pipe 340 being located inside flowmeter gas chamber 310
It is from top to bottom flowed through in drum flow meter gas chamber 310, flows through positive pressure hollow pipe 330, then flow through negative pressure hollow pipe 340, born
Press the tube body lower surface of hollow pipe 340 back to air-flow, referred to as leeward) it is equipped with the pressure port 341 of perforation；Positive pressure hollow pipe
330 outer end is tightly connected the positive pressure pressure-tapping nozzle of pressure flow sensor, and the outer end of negative pressure hollow pipe 340 is tightly connected flow pressure
The negative pressure pressure-tapping nozzle of force snesor.
Specifically, when surrounding air dioxin sampling instrument works, fan assembly work is drawn ambient air into host,
Air-flow from top to bottom flows through in drum flow meter gas chamber 310, flows through positive pressure hollow pipe 330 and negative pressure hollow pipe 340, respectively
Face air-flow and it is tightly connected flow pressure respectively back to air-flow, the outer end of positive pressure hollow pipe 330 and the outer end of negative pressure hollow pipe 340
The positive pressure pressure-tapping nozzle and negative pressure pressure-tapping nozzle of force snesor count warm temperature of 320 measurable flow of component through flowmeter gas indoor gas,
It can be with calculated gas flow flow velocity, to achieve the purpose that measure flow velocity according to measured temperature and pressure.The principle of the flowmeter is close
Like pitot tube type differential pressure flowmeter, while this kind of flowmeter can guarantee measurement differential pressure stability, do not increase the resistance of system, from
And when making same traffic, the workload of sampling pump is small, reduces the running noise under same traffic.
Further, it is truth of the air flow rate close to flow for flowing through hollow pipe, improves measurement
Accuracy, it is preferable that central axis of the central axis of positive pressure hollow pipe 330 and negative pressure hollow pipe 340 with flowmeter gas chamber 310
Line intersects vertically, i.e. positive pressure hollow pipe 330 and negative pressure hollow pipe 340 central axis that is perpendicularly oriented to flowmeter gas chamber 310, and
The intubating length of positive pressure hollow pipe 330 and negative pressure hollow pipe 340 is as long as possible, so that air-flow adequately flows through pressure port 331,341.
Since positive pressure hollow pipe 330 and negative pressure hollow pipe 340 will have air-flow to pass through, to improve positive pressure hollow pipe 330 and bearing
Stability of the hollow pipe 340 on flowmeter gas chamber 310 is pressed, as shown in figure 4, solid in the circumferential side wall of flowmeter gas chamber 310
Equipped with hollow pipe fixed plate 350, the outer end of positive pressure hollow pipe 330 and negative pressure hollow pipe 340 be pierced by hollow pipe fixed plate 350 and with
Hollow pipe fixed plate 350 is welded to connect.
For counting warm component 320, its role is to the temperature of air-flow is flowed through in detection stream meter gas chamber 310 comprising temperature
Degree sensor 322 and fixed plate 321, temperature sensor 322 are installed in fixed plate 321, the circumferential side wall of flowmeter gas chamber 310
The mounting hole for being equipped with and counting the warm cooperation of component 320, fixed plate 321 is installed in the circumferential side wall of flowmeter gas chamber 310 and temperature
The inside that sensor 322 is embedded in flowmeter gas chamber 310 is spent, and then flows through the temperature of air-flow in detectable flowmeter gas chamber 310, Gu
Sealing element is set between fixed board 321 and mounting hole to guarantee to seal.
For installation of the flow meter assembly 300 in cavity 120, specifically, it is connected in the upper end of flowmeter gas chamber 310
Mounting plate 360, as shown in Figure 3 and Figure 4, the periphery of mounting plate 360 are fixed on the inner wall of shell 110 by screw.Specifically,
The chamfered shape of mounting plate 360 is matched with the transverse cross-sectional profile shape of shell 110, and flow meter assembly 300 is located at mounting plate 360
Lower section, sampling head 200 is located at the top of mounting plate 360, and the lower end of sampling head 200 is connect with mounting plate 360, flow meter assembly
300 upper end is connect with mounting plate 360, and connecting plate 360 has intermediate throughholes, guarantees lower end and the flowmeter group of sampling head 200
The upper end of part 300 communicates.
There is necking part 311 to realize variable diameter to facilitate the suction nozzle with fan assembly 400 for the lower end of flowmeter gas chamber 310
410 connections, necking part 311 are tightly connected by the suction nozzle 410 of hose 600 and fan assembly 400.
To solve in the prior art, the host machine part of sampling head part (including filter membrane component and absorbent module) and sampling instrument
For fission design, sampling head part is size-limited, and filter membrane size is smaller, and when same traffic samples, filter membrane size is smaller, gas
The bigger problem of resistance, in the present embodiment, sampling head 200 is integrally mounted in cavity 120, without individually carrying and scene peace
Dress, size can be as much as possible close to cavity space size, and 120 space of cavity is bigger, and 200 size of sampling head is bigger, correspondingly,
Filter membrane size is bigger；Sampling head 200 is located at the top of flow meter assembly 300 and connect with flow meter assembly 300；As shown in figure 3,
Absorption cartridge module 220 of the sampling head 200 including filter membrane component 210 and positioned at 210 lower section of filter membrane component, filter membrane component 210 and suction
The working principle and building block of attached cartridge module 220 are compared with technology, unlike the prior art, due to filter membrane component 210
Size fitting cavity 120 size design, the transversal cross-section of cavity 120 is rectangular in the present embodiment, to make every effort to filter membrane size
It is as big as possible, then filter membrane component 210 be with cavity 120 it is matched rectangular, and adsorb 220 size of cartridge module it is smaller and be usually justify
Tubular is then connected between filter membrane component 210 and absorption cartridge module 220 by funnel-form switching cylinder 230 positioned there between, funnel
The upper end edge great Kou of shape switching cylinder 230 is corresponding with the edge of filter membrane component 210 to be tightly connected, funnel-form switching cylinder 230
Lower end osculum edge and absorption cartridge module 220 upper end opening be tightly connected, adsorb cartridge module 220 lower ending opening and flow
The upper end for counting gas chamber 310 is tightly connected.
Further, the upper junction plate 140 of annular is installed on the inner wall of shell 110, funnel-form switching cylinder 230 passes through upper
The big mouth overlapping edges in the upper end of connecting plate 140 and funnel-form switching cylinder 230 are on upper junction plate 140, the edge of filter membrane component 210
Position and the upper end edge great Kou of funnel-form switching cylinder 230 are removably connected in upper junction plate by top opening nut 150
On 140, thus ensure that the installation strength of filter membrane component 210 and funnel-form switching cylinder 230, and by adjusting top opening nut,
Filter membrane clip and PUF can be taken out, be user-friendly for the replacement of filter membrane and adsorbent material.
Specifically, filter membrane component 210 includes filter membrane clip, filter membrane clip pressing plate and filter membrane, and the upper end of funnel-form switching cylinder 230 is big
Mouth is tightly connected with filter membrane clip gasket, and filter membrane clip pressing plate passes through top opening nut 150 for filter membrane clip and funnel-form switching cylinder 230
The big mouth in upper end be fixed on upper junction plate 140 jointly, filter membrane be embedded in filter membrane clip in.It adsorbs cartridge module 220 and uses the poly- ammonia of PUF(
Ester foam) absorption comprising glass absorbing cylinder, PUF and gasket, PUF are filled in glass absorbing cylinder, and absorbing cylinder trawlnet is located at
Tube port position to prevent foreign matter from falling into cylinder, absorption 220 one end of cartridge module and funnel-form switching cylinder 230 be tightly connected, the other end with
Flow meter assembly 300, which is formed, to be tightly connected.
It is arranged on sampling instrument host shell outer surface to solve environment temperature sensor in the prior art, measured ring
Border temperature can be influenced by produced heat in host operational process and extraneous direct sunlight influences, and make ambient temperature measurement
Generate deviation, to influence the control of sampling flow, make sampling flow lead to the problem of relatively large deviation this, in the present embodiment, shell
110 are equipped with circumstance temperature sensor mounting hole, are equipped with forced draft fans 700, environment temperature sensor at circumstance temperature sensor mounting hole
500 it is mounted on the air draught side of forced draft fans 700 that (i.e. environment temperature sensor 500 is outer with respect to forced draft fans 700, i.e., relatively
Forced draft fans 700 are far from host center axis), surrounding air is sucked by forced draft fans 700, surrounding air is directly through environment temperature
Sensor 500 is spent, to measure circumstance temperature, that is, realizes induced air type ambient temperature measurement mode, can effectively reduce the rising of host temperature
Caused ambient temperature deviation, and prevent instrument outdoors for a long time in use, since direct sunlight causes temperature sensor
Testing result deviates practical circumstance temperature numerical value.To protect forced draft fans 700 and environment temperature sensor 500, passed in circumstance temperature
Sensor mounting hole configures ventilation rainproof cover 800, and the setting structure of ventilation rainproof cover 800 is quick detachable, provides just for later period maintenance
Benefit.
To be easily installed, the upper end opening of host shell 110, and opening is equipped with shield 130, shield
130 can be hinged on shell 100 by the hinged mode in side, be easy to open closing.And complete machine uses universal wheel 900, so that
Instrument is easy to carry, reduces the working strength of user.
Above embodiments are only to illustrate the technical solution of the utility model, rather than are limited；Although referring to before
Embodiment is stated the utility model is described in detail, it for those of ordinary skill in the art, still can be right
Technical solution documented by previous embodiment is modified or equivalent replacement of some of the technical features；And these
Modifications or substitutions, the utility model technical solution claimed that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of surrounding air dioxin sampling instrument, the flow meter assembly being tightly connected including host, sampling head and sampling head,
Fan assembly, environment temperature sensor and the pressure flow sensor being tightly connected with flow meter assembly, the host includes shell
Body and the cavity surrounded by shell, the flow meter assembly and fan assembly setting are in the cavity；It is characterized by: described
Flow meter assembly includes the drum flow meter gas chamber for erectting setting, temperature component, one is being just based on detection stream meter gas chamber temperature
Hollow pipe and a negative pressure hollow pipe are pressed, the positive pressure hollow pipe is parallel with the negative pressure hollow pipe and is oppositely arranged up and down, and
It is plugged in the circumferential side wall of the flowmeter gas chamber, plugs position and be respectively provided with sealing element；The positive pressure hollow pipe and described negative
The inner end of pressure hollow pipe is all closed and is located at the inside of the flowmeter gas chamber, and outer end is open and is respectively positioned on the flowmeter gas chamber
It is external；The tube body windward side positioned at the flowmeter plenum interior of the positive pressure hollow pipe is equipped with the pressure port of perforation, institute
The tube body leeward positioned at the flowmeter plenum interior for stating negative pressure hollow pipe is equipped with the pressure port of perforation；The positive pressure is empty
The outer end of core pipe is tightly connected the positive pressure pressure-tapping nozzle of the pressure flow sensor, and the outer end of the negative pressure hollow pipe is tightly connected
The negative pressure pressure-tapping nozzle of the pressure flow sensor.
2. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the positive pressure hollow pipe and described
The central axis of negative pressure hollow pipe intersects with the central axis upright of the flowmeter gas chamber.
3. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the circumferential direction of the flowmeter gas chamber
It is installed with hollow pipe fixed plate on side wall, it is solid that the outer end of the positive pressure hollow pipe and the negative pressure hollow pipe is pierced by the hollow pipe
Fixed board is simultaneously welded to connect with the hollow pipe fixed plate.
4. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the warm component of the meter includes temperature
Sensor and fixed plate, the temperature sensor are installed in the fixed plate, are set in the circumferential side wall of the flowmeter gas chamber
There is the mounting hole with the warm component cooperation of the meter, the fixed plate is installed in the circumferential side wall of the flowmeter gas chamber and described
Temperature sensor is embedded in the inside of the flowmeter gas chamber, and sealing element is arranged between the fixed plate and the mounting hole.
5. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the upper end of the flowmeter gas chamber
It is connected with mounting plate, the periphery of the mounting plate is fixed on the inner wall of the shell.
6. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the lower end of the flowmeter gas chamber
With necking part, the suction nozzle of the necking part and the fan assembly is tightly connected.
7. surrounding air dioxin sampling instrument according to any one of claim 1 to 6, it is characterised in that: the sampling
Head is integrally mounted in the cavity, and is connect in the top of the flow meter assembly with the flow meter assembly, the sampling
Head includes filter membrane component and the absorption cartridge module below filter membrane component, and the filter membrane component and the absorption cartridge module are by position
It is connected in funnel-form switching cylinder between the two, the upper end edge great Kou of the funnel-form switching cylinder and the side of the filter membrane component
Edge position is corresponding to be tightly connected, and the lower end osculum edge of the funnel-form switching cylinder and the upper end opening of the absorption cartridge module are close
Envelope connection, the lower ending opening of the absorption cartridge module and the upper end of the flowmeter gas chamber are tightly connected.
8. surrounding air dioxin sampling instrument according to claim 7, it is characterised in that: fixed on the inner wall of the shell
There is the upper junction plate of annular, the funnel-form switching cylinder passes through the upper end great Kou of the upper junction plate and the funnel-form switching cylinder
Overlapping edges are on the upper junction plate, the upper end side great Kou of the edge of the filter membrane component and the funnel-form switching cylinder
Edge position is removably connected on the upper junction plate by top opening nut.
9. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the shell is passed equipped with circumstance temperature
Sensor mounting hole, forced draft fans are equipped at the circumstance temperature sensor mounting hole, and the environment temperature sensor is mounted on described
On the air draught side of forced draft fans.
10. surrounding air dioxin sampling instrument according to claim 1, it is characterised in that: the upper end opening of the shell,
And opening is equipped with shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867316.4U CN208366681U (en) | 2018-06-06 | 2018-06-06 | Surrounding air dioxin sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867316.4U CN208366681U (en) | 2018-06-06 | 2018-06-06 | Surrounding air dioxin sampling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208366681U true CN208366681U (en) | 2019-01-11 |
Family
ID=64931729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820867316.4U Active CN208366681U (en) | 2018-06-06 | 2018-06-06 | Surrounding air dioxin sampling instrument |
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| Country | Link |
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| CN (1) | CN208366681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709780A (en) * | 2018-06-06 | 2018-10-26 | 青岛海纳光电环保有限公司 | Surrounding air bioxin sampling instrument |
-
2018
- 2018-06-06 CN CN201820867316.4U patent/CN208366681U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709780A (en) * | 2018-06-06 | 2018-10-26 | 青岛海纳光电环保有限公司 | Surrounding air bioxin sampling instrument |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone of Shandong Province, Qingdao City, 266109 East Road No. 379 Patentee after: Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd. Address before: High tech Zone of Shandong Province, Qingdao City, 266109 East Road No. 379 Patentee before: Qingdao Haina Guangdian Environmental Protection Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |