CN108458899A - A kind of urban duct water quality monitoring water fetching device - Google Patents
A kind of urban duct water quality monitoring water fetching device Download PDFInfo
- Publication number
- CN108458899A CN108458899A CN201810174223.8A CN201810174223A CN108458899A CN 108458899 A CN108458899 A CN 108458899A CN 201810174223 A CN201810174223 A CN 201810174223A CN 108458899 A CN108458899 A CN 108458899A
- Authority
- CN
- China
- Prior art keywords
- water
- scalable
- water pipe
- quality monitoring
- fetching device
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000007667 floating Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 244000241796 Christia obcordata Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000009440 infrastructure construction Methods 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
The invention discloses a kind of urban duct water quality monitoring water fetching devices, including scalable water pipe, mounting bracket, floating water intaking component；One end of scalable water pipe is connected to suction pump, and the other end of scalable water pipe, which can extend in water, to draw water, and mounting bracket is used to scalable water pipe being mounted in pipeline；The other end in scalable water pipe is arranged to make the other end of scalable water pipe with the height of the water surface by buoyancy in the water intaking component that floats, the design makes the other end of scalable water pipe be always positioned at water surface site and fetch water, it is to be located at water level top to ensure the sample fetched water every time all, to which testing result is more accurate, and it is not necessarily to manual synchronizing, it is easy to use.
Description
Technical field
The present invention relates to urban duct detection field, especially a kind of water fetching device.
Background technology
Urban drainage pipe network system is important civilian infrastructure, with the high speed development of urban construction, municipal drainage
Pipe network system becomes to become increasingly complex, more and more huger, and status of the complicated pipe network system in city operations is increasingly
It is important, but at the same time, urban drainage pipe network becomes the major safety risks of urban safety and social daily life, municipal drainage
Pipe network system faces increasing challenge.
The report of Chinese city key problem points out that bursting problem will enter peak period in China's urban construction, especially
It is urban safety problem, needs to reinforce paying attention to the security performance during urban infrastructure construction.Urban drainage pipe network system
It is the important component of urban infrastructure construction, and the safe operation of urban drainage pipe network, failure check in time and diagnosis
It is the emphasis of urban safety problem work, therefore grasps the operation conditions of urban drainage pipeline system, judges whether it normally transports
Row just seems particularly significant.
Urban discharging pipeline monitoring water quality on line is a kind of means monitored in real time to piping disease situation, principle
It is that upstream and downstream pipe network disease incidence is judged with water concentration changing rule, therefore, whether the water sample that water quality monitoring is taken has generation
Table is even more important.Stable water sample accurately to be acquired it is necessary to avoid causing because of full water and low water level the water sample of acquisition different,
To avoid sampling head to be covered and washed away etc. by flowing water by pipeline deposit simultaneously can influence sampled result, leads to water quality monitoring result
Inaccurate situation, previous water fetching device only place the intake pipe of regular length in urban duct, need to detect water quality
When, water pump extracts water by intake pipe, however since the water level in pipeline may change at any time, lead to that variable cannot be controlled.
Invention content
In order to solve the above technical problems, the object of the present invention is to provide one kind to be lifted automatically with standard with SEA LEVEL VARIATION
The water fetching device really sampled.
The technical solution adopted by the present invention is：
A kind of urban duct water quality monitoring water fetching device, including：
One end of scalable water pipe, scalable water pipe is connected to suction pump, and the other end of scalable water pipe can extend to
It draws water in water；
Mounting bracket, for scalable water pipe to be mounted in pipeline；
Float water intaking component, the other end in scalable water pipe is set with made by buoyancy the other end of scalable water pipe with
The height of the water surface.
The water intaking component that floats includes the floating part for filtering pullover and being arranged on filtering pullover, the filter sheath headgear
It is connected on the other end of scalable water pipe.
Be provided on the filtering pullover it is at least one can allow external water enter scalable water pipe in check-valves, should
The water inlet of check-valves is provided with filter layer.
The floating part includes four floating balls and is evenly distributedly arranged in the periphery wall for filtering pullover.
The check-valves and filtering pullover are detachably connected.
The locating part that the water intaking component that can prevent from floating is swung is additionally provided in the mounting bracket.
The mounting bracket includes installation sheath body, which is connected on one end of scalable water pipe, the installation set
It is provided with the water outlet that can be connected to suction pump on shell, the fixation that can be connect with pipeline is provided on the outside of the installation sheath body
Part.
The fixing piece includes being arranged in extraneous bolt, the bolt hole and buttferfly-type that are arranged on installation set shell side wall
Nut, bolt are fixed on that will install sheath body on extraneous pipeline by being connect with buttferfly-type nut after bolt hole.
The locating part includes the extensible body of rod, which connect with installation sheath body, the scalable water
Pipe is enclosed in the periphery of the extensible body of rod, be provided on the filtering pullover can allow for the other end of the extensible body of rod by
First pore, filtering pullover can be up and down along the extensible body of rod.
The extensible body of rod includes several connecting tubes being socketed successively, detachably connected between adjacent connecting tube.
Beneficial effects of the present invention：
Device is mounted on the wall of pipeline, one end of scalable water pipe by water fetching device of the present invention by mounting bracket
It is connected to suction pump, the other end of scalable water pipe can extend in water, and suction pump is fetched water by scalable water pipe, while can
The other end of flexible water pipe is provided with floating water intaking component, and the water intaking component that floats can make the other end of scalable water pipe with the water surface
Height moves up or down so that the other end of scalable water pipe is always positioned at water surface site and fetches water, and ensures water intaking every time
Sample all be located at water level top, to testing result it is more accurate, and be not necessarily to manual synchronizing, it is easy to use.
In addition, finite place piece is arranged in mounting bracket, water intaking component swing of floating can be prevented, or even in flow flowing
In the case of, prevent floating water intaking component to be flushed away.
Description of the drawings
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is schematic diagram of the water fetching device of the present invention under low water level state.
Fig. 2 is schematic diagram of the water fetching device of the present invention under high water level state.
Fig. 3 is the schematic diagram of scalable water pipe.
Fig. 4 is the side view of floating water intaking component.
Fig. 5 is the vertical view of floating water intaking component.
Fig. 6 is the side view of mounting bracket.
Fig. 7 is the vertical view of mounting bracket.
Fig. 8 is the schematic diagram of the extensible body of rod.
Specific implementation mode
As Figure 1-Figure 8, water fetching device of the present invention, including scalable water pipe 1, mounting bracket 2, floating water intaking component 3；
One end of scalable water pipe 1 is connected to suction pump 4, and the other end of scalable water pipe 1, which can extend in water, to draw water, installation
Holder 2 is used to scalable water pipe 1 being mounted in pipeline；The other end in scalable water pipe 1 is arranged with logical in the water intaking component 3 that floats
Crossing buoyancy makes the other end of scalable water pipe 1 with the height of the water surface.
Wherein, scalable water pipe 1 herein can be mutually socketed to form by several water pipes, and can be stretched between adjacent water pipe
Exhibition is either stored or scalable water pipe 1 can be that flexible sebific duct is realized by folds with reference to shown in Fig. 3.
Device is mounted on the wall of pipeline by the design by mounting bracket 2,1 one end of scalable water pipe and suction pump 4
Connection, the other end of scalable water pipe 1 can extend in water, and suction pump 4 is fetched water by scalable water pipe 1, while scalable
The other end of water pipe 1 is provided with floating water intaking component 3, and the water intaking component 3 that floats can make the other end of scalable water pipe 1 with the water surface
Height moves up or down so that the other end of scalable water pipe 1 is always positioned at water surface site and fetches water, and ensures water intaking every time
Sample all be located at water level top, to testing result it is more accurate, and be not necessarily to manual synchronizing, it is easy to use.
As shown in Figure 4, Figure 5, the water intaking component 3 that floats includes the floating filtered pullover 31 and be arranged on filtering pullover 31
Part 32, the filtering pullover 31 are socketed in the other end of scalable water pipe 1, and filtering pullover 31 herein can be to large volume in water
Particle, rubbish etc. are filtered, it can be ensured that the other end of scalable water pipe 1 will not be covered by pipeline deposit influences sampling, together
When in practical operation, scalable water pipe 1 can be bonded with filtering pullover 31 with band or clip together with.
Meanwhile filter pullover 31 on be provided with it is at least one can allow external water enter scalable water pipe 1 in non-return
The water inlet of valve 33, the check-valves 33 is provided with filter layer (not depending on going out in figure), and check-valves 33 can with filtering pullover 31
It releasably connects, can punch on filtering pullover 31, and be threaded structure, detachably be connected by helicitic texture realization herein
It connects, there are four check-valves 33 for setting on filtering pullover 31 by the design, do not limit herein particular number, can be one
It is a, two or more, check-valves 33 can coordinate suction pump to draw water, and prevent enter scalable water pipe 1 in water
Reflux increases efficiency of drawing water.
In addition, the design floating part 32 can be the object that can be bubbled through the water column, such as the floating ball of inner hollow, plastic part
Etc., the design does not limit the particular number of floating part, preferred embodiment be floating part 32 include four floating balls and
The periphery wall in filtering pullover 31 is arranged in even distribution ground, and four floating balls are uniformly distributed herein, can keep the flat of filtering pullover 31
Weighing apparatus ensures that the check-valves 33 on filtering pullover 31 generally within same plane, can touch the water surface, increase efficiency of drawing water, together
When ensure extract be same water level water, sample drawn it is more acurrate.
As shown in Figure 6, Figure 7, in order to be simply installed water fetching device on pipeline wall, mounting bracket 2 includes
Sheath body 21 is installed, which is socketed in one end of scalable water pipe 1, and being provided on installation sheath body 21 can be with suction pump
The water outlet 22 of 4 connections, 21 outside of installation sheath body are provided with the fixing piece 23 that can be connect with pipeline, pacify at water outlet 22 herein
Equipped with reducer union, it is connected to respectively with suction pump 4, scalable water pipe 1.
Wherein, fixing piece 23 includes being arranged in extraneous bolt, the bolt hole being arranged on installation set shell side wall and butterfly
Wing nut, bolt are fixed on that will install sheath body on extraneous pipeline by being connect with buttferfly-type nut after bolt hole, herein butterfly
Wing nut also allows for staff's installation and dismounting.
As shown in Fig. 3, Fig. 8, the water intaking component 3 that floats in order to prevent is swung, or even in the case where flow flows, prevents from floating
Dynamic water intaking component 3 is flushed away, and the locating part 5 that the water intaking component 3 that can prevent from floating is swung is additionally provided in mounting bracket 2.
Structure based on above-mentioned mounting bracket 2 with the water intaking component 3 that floats, locating part 5 include the extensible body of rod, this is extensible
Body of rod one end is connect with installation sheath body 21, and scalable water pipe 11 is enclosed in the periphery of the extensible body of rod, is filtered and is arranged on pullover 31
Have can allow for the other end of the extensible body of rod by the first pore 34, filtering pullover 31 can be living up and down along the extensible body of rod
Dynamic, the extensible body of rod herein includes several connecting tubes being socketed successively 51, detachably connected between adjacent connecting tube, this
The connecting tube 51 at place is that duralumin pipe splices the extensible body of rod of corresponding length according to the physical length of pipeline, can be in installation set
Second pore 24 is set on shell 21, and structure is threaded in the second pore 24, passes through the company of helicitic texture and the top
51 connection of take over, locating part 5 ensure that equipment will not arbitrarily be swung in flow, and installation personnel ensure that without interior installation of going into the well
The personal safety of installation personnel.
Specific operation process can be as follows when mounted by the design staff：
Inspection shaft is opened, and allows inspection shaft opening gravity-flow ventilation 5-10 minute, release toxic and harmful gas；
Pre-assembly water fetching device simultaneously allows scalable water pipe pipe to be in folded state；
Measuring and calculating device hangs up height, and beats two circular cavities in inspection shaft inner wall predetermined altitude；
People stands outside well, and hand-held device is slowly vertical to be put into inspection shaft, and extensible post is made to be attached to deposit
Upper surface；
Using buttferfly-type nut fixing device, and the scalable water pipe of slow release；
It is separately connected suction pump and scalable water pipe by variable-diameter interface；
Suction pump debugging apparatus is opened until device stablizes sampling.
The foregoing is merely the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, as long as with
Essentially identical means realize that the technical solution of the object of the invention belongs within protection scope of the present invention.
Claims (10)
1. a kind of urban duct water quality monitoring water fetching device, which is characterized in that including：
One end of scalable water pipe, scalable water pipe is connected to suction pump, and the other end of scalable water pipe can extend in water
It draws water；
Mounting bracket, for scalable water pipe to be mounted in pipeline；
Float water intaking component, and the other end in scalable water pipe is arranged to make the other end of scalable water pipe with the water surface by buoyancy
Height.
2. a kind of urban duct water quality monitoring water fetching device according to claim 1, it is characterised in that：The floating water intaking
Component includes the floating part for filtering pullover and being arranged on filtering pullover, which is connected on the another of scalable water pipe
End.
3. a kind of urban duct water quality monitoring water fetching device according to claim 2, it is characterised in that：The filtering pullover
On be provided with it is at least one can allow external water enter scalable water pipe in check-valves, the check-valves water inlet setting
There is filter layer.
4. a kind of urban duct water quality monitoring water fetching device according to claim 3, it is characterised in that：The floating part packet
It includes four floating balls and the periphery wall in filtering pullover is evenly distributedly set.
5. a kind of urban duct water quality monitoring water fetching device according to claim 3, it is characterised in that：The check-valves with
It is detachably connected to filter pullover.
6. a kind of urban duct water quality monitoring water fetching device according to claim 2, it is characterised in that：The mounting bracket
On be additionally provided with can prevent float water intaking component swing locating part.
7. a kind of urban duct water quality monitoring water fetching device according to claim 6, it is characterised in that：The mounting bracket
Including installing sheath body, which is connected on one end of scalable water pipe, be provided on the installation sheath body can with draw water
The water outlet of connection is pumped, the fixing piece that can be connect with pipeline is provided on the outside of the installation sheath body.
8. a kind of urban duct water quality monitoring water fetching device according to claim 7, it is characterised in that：The fixing piece packet
It includes to be arranged and passes through bolt hole in extraneous bolt, the bolt hole being arranged on installation set shell side wall and buttferfly-type nut, bolt
It connect with buttferfly-type nut and is fixed on extraneous pipeline so that sheath body will be installed afterwards.
9. a kind of urban duct water quality monitoring water fetching device according to claim 7, it is characterised in that：The locating part packet
The extensible body of rod is included, which connect with installation sheath body, and the scalable water pipe is enclosed in the extensible body of rod
Periphery, be provided on the filtering pullover can allow for the other end of the extensible body of rod by the first pore, filter pullover energy
It is enough up and down along the extensible body of rod.
10. a kind of urban duct water quality monitoring water fetching device according to claim 9, it is characterised in that：It is described extensible
The body of rod includes several connecting tubes being socketed successively, detachably connected between adjacent connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174223.8A CN108458899A (en) | 2018-03-02 | 2018-03-02 | A kind of urban duct water quality monitoring water fetching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174223.8A CN108458899A (en) | 2018-03-02 | 2018-03-02 | A kind of urban duct water quality monitoring water fetching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458899A true CN108458899A (en) | 2018-08-28 |
Family
ID=63217028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810174223.8A Pending CN108458899A (en) | 2018-03-02 | 2018-03-02 | A kind of urban duct water quality monitoring water fetching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108458899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525603A (en) * | 2021-02-08 | 2021-03-19 | 天宇利水信息技术成都有限公司 | Silt sampling equipment suitable for flood season river |
| CN113267380A (en) * | 2021-05-18 | 2021-08-17 | 永高股份有限公司 | Water supply network fixed point water quality testing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002014089A (en) * | 2000-06-27 | 2002-01-18 | Mitsubishi Electric Corp | Water-sampling device |
| CN102759608A (en) * | 2012-05-18 | 2012-10-31 | 南京领先环保技术有限公司 | Floating type solar energy online multi-parameter water quality monitor |
| CN203478642U (en) * | 2013-06-26 | 2014-03-12 | 浙江华锦太阳能科技有限公司 | Telescopic high-level water taking device |
| CN203523458U (en) * | 2013-09-10 | 2014-04-09 | 吴守军 | Water level self-adaptation anti-blocking water inlet device |
| CN103860095A (en) * | 2014-03-26 | 2014-06-18 | 西安建筑科技大学 | Feces-urine separated type water-saving ecological restroom |
| KR20150000170A (en) * | 2013-06-24 | 2015-01-02 | 최훈호 | purification device in reservoir |
| KR101513463B1 (en) * | 2014-12-12 | 2015-04-21 | (주)지산종합기술 | Automatic Water Sampler for Sewer Pipe |
| CN205804478U (en) * | 2016-05-19 | 2016-12-14 | 湘潭中节能城市节能有限公司 | Floating water fetching device |
| CN206683897U (en) * | 2017-04-17 | 2017-11-28 | 上海捷辰仪器有限公司 | A kind of floating type water sampling device |
| CN207923522U (en) * | 2018-03-02 | 2018-09-28 | 中山市知科应用科技研究有限公司 | A kind of urban duct water quality monitoring water fetching device |
-
2018
- 2018-03-02 CN CN201810174223.8A patent/CN108458899A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002014089A (en) * | 2000-06-27 | 2002-01-18 | Mitsubishi Electric Corp | Water-sampling device |
| CN102759608A (en) * | 2012-05-18 | 2012-10-31 | 南京领先环保技术有限公司 | Floating type solar energy online multi-parameter water quality monitor |
| KR20150000170A (en) * | 2013-06-24 | 2015-01-02 | 최훈호 | purification device in reservoir |
| CN203478642U (en) * | 2013-06-26 | 2014-03-12 | 浙江华锦太阳能科技有限公司 | Telescopic high-level water taking device |
| CN203523458U (en) * | 2013-09-10 | 2014-04-09 | 吴守军 | Water level self-adaptation anti-blocking water inlet device |
| CN103860095A (en) * | 2014-03-26 | 2014-06-18 | 西安建筑科技大学 | Feces-urine separated type water-saving ecological restroom |
| KR101513463B1 (en) * | 2014-12-12 | 2015-04-21 | (주)지산종합기술 | Automatic Water Sampler for Sewer Pipe |
| CN205804478U (en) * | 2016-05-19 | 2016-12-14 | 湘潭中节能城市节能有限公司 | Floating water fetching device |
| CN206683897U (en) * | 2017-04-17 | 2017-11-28 | 上海捷辰仪器有限公司 | A kind of floating type water sampling device |
| CN207923522U (en) * | 2018-03-02 | 2018-09-28 | 中山市知科应用科技研究有限公司 | A kind of urban duct water quality monitoring water fetching device |
Non-Patent Citations (1)
| Title |
|---|
| 中国建筑标准设计研究院: "《国家建筑标准设计图集 管道阀门选用与安装》", 中国计划出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525603A (en) * | 2021-02-08 | 2021-03-19 | 天宇利水信息技术成都有限公司 | Silt sampling equipment suitable for flood season river |
| CN112525603B (en) * | 2021-02-08 | 2021-05-07 | 天宇利水信息技术成都有限公司 | Silt sampling equipment suitable for flood season river |
| CN113267380A (en) * | 2021-05-18 | 2021-08-17 | 永高股份有限公司 | Water supply network fixed point water quality testing device |
| CN113267380B (en) * | 2021-05-18 | 2023-03-21 | 永高股份有限公司 | Water supply network fixed point water quality testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205352770U (en) | Water sample automatic acquisition controlling means suitable for buoy uses | |
| CN108458899A (en) | A kind of urban duct water quality monitoring water fetching device | |
| CN209841482U (en) | Suck-back prevention sampling device | |
| CN207923522U (en) | A kind of urban duct water quality monitoring water fetching device | |
| CN206601321U (en) | A kind of dust sensor | |
| CN219635439U (en) | Remote control gas detection ship for gas pipeline inspection line | |
| CN115856241B (en) | Portable water environment monitoring device | |
| CN209432814U (en) | It is layered water quality detecting device | |
| CN206095718U (en) | Sampling device suitable for low concentration particulate matter | |
| CN203324247U (en) | Automatic monitoring system of radioactive aerosol | |
| CN205120375U (en) | Pressure marking apparatus protection device | |
| CN203965186U (en) | Long-pending up-to-date style suspended load fish lead sampling thief | |
| CN203606181U (en) | Sampling apparatus for testing water quality | |
| CN207751991U (en) | A kind of device for detecting aquatic ecosystem organic pollution | |
| CN207019959U (en) | Ambient particle thing on-Line Monitor Device | |
| CN215492616U (en) | Sewage sampling device for environmental monitoring | |
| CN217084302U (en) | Extraction element convenient to pigment detects | |
| CN209589571U (en) | A kind of water quality detecting device | |
| CN105158030B (en) | A kind of air and wasteair sampling absorption plant | |
| CN217505307U (en) | Multi-adaptive water-gas-sound environment monitoring device | |
| CN211425966U (en) | Waste water sampling device | |
| CN208537254U (en) | A kind of industrial waste gas detection device | |
| CN108195635A (en) | A kind of exhaust gas sampling apparatus | |
| CN209727591U (en) | A kind of gas dilution device of adjustable proportion | |
| CN207148072U (en) | Hand-held air monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |