CN107907379A - A kind of Portable underground water sampler - Google Patents
A kind of Portable underground water sampler Download PDFInfo
- Publication number
- CN107907379A CN107907379A CN201711491444.XA CN201711491444A CN107907379A CN 107907379 A CN107907379 A CN 107907379A CN 201711491444 A CN201711491444 A CN 201711491444A CN 107907379 A CN107907379 A CN 107907379A
- Authority
- CN
- China
- Prior art keywords
- water
- core bar
- horizontal blank
- water intaking
- seal plate
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000007667 floating Methods 0.000 claims abstract description 25
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000003643 water by type Substances 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of Portable underground water sampler, belongs to underground water sampling technique field.Sampler includes water intaking cylinder（1）With water intaking cylinder（1）On rope（2）, cylinder of fetching water（1）Bottom sidewall is equipped with inlet opening（13）, inlet opening（13）Madial wall on symmetrical be hinged be connected to two seal plates（10）, two seal plates（10）Between be equipped with inverted T-shaped limit card block（11）, inverted T-shaped limit card block（11）For controlling two pieces of seal plates（10）Closure, with limit card block（11）Opposite seal plate（10）End face is equipped with iron plate（9）；Seal plate（10）The water intaking cylinder of top（1）Two the vertical chutes are arranged with inner wall（16）, two sliding slots（16）Between set horizontal blank core bar（5）, horizontal blank core bar（5）Pass through hose（17）Connect transparent floating ball（4）；Horizontal blank core bar（5）Bottom is equipped with two blocks of magnet（22）.It is the configuration of the present invention is simple, easy to operate, easy to carry.
Description
Technical field
The present invention relates to a kind of underground water sampling technique field, and in particular to a kind of Portable underground water sampler.
Background technology
Underground water refers to be imbedded in various forms of bulk waters below earth's surface, is the important component of water resource.Underground
The dynamic observation of water directly reflects the change of groundwater quality, therefore should strengthen the water-quality observation to underground water.
Device for underground water sampling has very much, but it is big it is multi-functional it is single, water intaking is slower.
The content of the invention
It is an object of the invention to for boring aperture is smaller, water intaking position water is smaller etc. be not easy water sampling under the premise of,
A kind of underground water water fetching device simple in structure, easy to operate, portable is provided.
What the purpose of the present invention was achieved through the following technical solutions, a kind of Portable underground water sampler, including water intaking
Rope on cylinder and water intaking cylinder, it is characterized in that, the water intaking cylinder bottom sidewall is equipped with inlet opening, right on the madial wall of inlet opening
Claim hinge to be connected to two seal plates, inverted T-shaped limit card block is equipped between two seal plates, inverted T-shaped limit card block is used to control two
The closure of block seal plate, the seal plate end face opposite with limit card block are equipped with iron plate；In water intaking cylinder above the seal plate
Two the vertical chutes are arranged with wall, horizontal blank core bar is set between two sliding slots, horizontal blank core bar is connected saturating by hose
Bright floating ball；Horizontal blank core bar bottom is equipped with two blocks of magnet, passes through the corresponding sealing of gravitation increase between magnet and corresponding iron plate
Plate open angle.
Preferably, it is equipped with LED light in the transparent floating ball, LED light passes through the circuit that is arranged in hose, horizontal blank core bar
It is connected with metal contact, circuit is equipped with battery；The sliding slot upper inside wall is equipped with copper sheet；The transparent float spherical zone moves water
Core bar moves up out of the void, and horizontal blank core bar is slided in sliding slot and moved up, and until metal contact is contacted with copper sheet, circuit is connected, transparent
LED light flickers in floating ball circuit, and LED light transmits water sample water level positional information by transparent floating ball.
Preferably, the water intaking cylinder bottom is equipped with ballast box, is equipped with several clump weights in ballast box, clump weight passes through extension
Hook is arranged on the water intaking tube end plate.
Preferably, being covered on the net equipped with detachable dustproof at the top of the water intaking cylinder, Air Filter upper cover side wall is equipped with air hole,
Lid is equipped with rope on Air Filter.
Preferably, the inlet opening is equipped with detachable permeable filter screen.
Preferably, the seal plate with water intaking medial wall of the tube be connected by hinge, seal plate with water intaking medial wall of the tube it
Between be equipped with sealing.
Preferably, the water intaking cylinder is tetragonous rod structure, and four sidewall bottoms of tetragonous rod structure are respectively equipped with inlet opening.
A kind of Portable underground water sampler.In underground water sampling process, water fetching device is put down by rope, device
Into in water, the filter screen that underground water is disposed by four side of water fetching device enters device；Horizontal blank core has two blocks of magnet,
Iron plate is made seal plate open certain angle, underground water enters water fetching device, due to floating by attraction and the impact force action of water
Power acts on, and transparent float spherical zone moves horizontal blank core and moves up, and connects circuit until horizontal blank core is moved up to peak level, transparent
LED light flickers in floating ball, and water intaking terminates.Water fetching device is taken out using rope, the gravity of water makes seal plate close spacing
On fixture block, ground water reserve is in water fetching device.
In order to make the water intaking of Portable underground water sampler convenient, water fetching device is designed as four prisms cylinder shape, device four
Face is equipped with permeable filter screen, and underground water enters in device from four sides.
In order to make Portable underground water sampler store water sample, two fan symmetrical seal plates are set in water fetching device, are utilized
Hinge built-in edge both ends, seal plate side can open water inlet, and seal plate terminates in inverted T shaped limit card block during closing, stores water
In water fetching device.
It is convenient in order to open seal plate, magnet is had in horizontal blank core, the iron plate of seal plate is pre- by attraction
Certain angle is first opened, current is washed seal plate open and is more convenient, improves efficiency of producing drinking water.
In order to make Portable underground water sampler control water, compact battery, electric wire, transparent float built in horizontal blank core
Compact LED lamp is equipped with ball, connects and electric wire is placed in the hose between horizontal blank core and transparent floating ball, sliding slot inside top patch
There is iron plate, horizontal blank core slides up to circuit during certain altitude and connects, and LED light is bright to represent that water intaking water reaches requirement.
It is circular filter net in order to make Portable underground water sampler simple operation, on inlet opening, outside of containers is set
Annular groove, makes filter screen detachable；Container top is detachable protective net, cleaning easy to disassemble.
In order to make Portable underground water sampler water intaking depth down, container bottom closing and setting hook, can add
Bottom weight block increases device own wt, increases water depth under the water-sampling device of underground.
Compared with prior art, the invention has the advantages that：
1st, the present invention uses four prisms cylinder structure, and device four sides is permeable with filter screen, increase water inlet area, simple in structure, convenient.
2nd, the present invention using two fan sides using the hinge rectangle seal plate retractable as corner side, seal plate one during water inlet
Side is opened, and seal plate closes in limit card block during water intaking, and device water inlet is convenient, water storage is quick.
3rd, the present invention sets transparent floating ball, flat hollow printed line road and LED light, water sample water level in Observable water fetching device,
It is vdiverse in function.
4th, the present invention utilizes graviational interaction, and flat thin magnet is set on the inside of horizontal blank core bottom, seal plate, increases seal plate
Opening degree, underground water sampling efficiency is high, water is more.
5th, the permeable filter screen of institute's device of the present invention and upper cover protection network are detachable, and operation is convenient and cleanable.
6th, it is reasonable in design, it is easy to operation, it is of low cost, it is convenient and efficient.
Brief description of the drawings
Fig. 1 terminates seal plate location drawing when device above carries for a kind of water intaking of Portable underground water sampler of the present invention；
Fig. 2 be a kind of Portable underground water sampler of the present invention it is initial when the seal plate location drawing；
Seal plate location drawing when Fig. 3 is a kind of water intaking of Portable underground water sampler of the present invention；
Fig. 4 is a kind of horizontal blank core bar layout drawing of Portable underground water sampler of the present invention；
Fig. 5 is a kind of B-B sections of Portable underground water sampler of the present invention；
Fig. 6 is a kind of A-A sections of Portable underground water sampler of the present invention；
Fig. 7 is a kind of seal plate sealing layout drawing of Portable underground water sampler of the present invention；
Fig. 8 is a kind of circuit detail drawing of Portable underground water sampler of the present invention.
Embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to described apply example.
Embodiment：
As shown in figures 1-8, a kind of Portable underground water sampler, including water intaking cylinder 1, rope 2, Air Filter upper cover 3, transparent float
Ball 4, horizontal blank core bar 5, circuit 6, LED light 7, baby battery 8, iron plate 9, seal plate 10, limit card block 11, hinge 12, inlet opening
13rd, permeable filter screen 14, bottom weight block 15, sliding slot 16, hose 17, ballast box 18, venthole 19, sealing 20, copper sheet 21, magnetic
Iron 22, metal contact 23.
As shown in Fig. 1,2,3,4,5,6,7,8, the water intaking cylinder 1 is quadrangular container, and 1 top of water intaking cylinder is equipped with protection network
Venthole 19 is left in upper cover 3,3 side of protection network upper cover, and protection network upper cover 3 is connected with rope 2；Water intaking and is set 1 bottom lock of cylinder
Ballast box 18 is put, be equipped with hook in ballast box 18 is connected with bottom weight block 15, to be applicable in different water depth.Horizontal blank core bar 5
It can be slided along sliding slot 16, it has magnet 22, and inside is equipped with baby battery 8, circuit 6 and metal contact 23, flat hollow
Bar 5 is connected by hose 17 with transparent floating ball 4 and LED light 7.Inlet opening 13 is on 1 bottom of water intaking cylinder, four side chamber wall, underground
Water enters container 1 and open seal plate 10 by the detachable filter screen 14 on inlet opening 13 is full of container.Transparent 4 band of floating ball
Dynamic horizontal blank core bar 5 moves up, and horizontal blank core bar 5 is slided in sliding slot 16 and moved up, the copper sheet in metal contact 23 and sliding slot
LED light 7 flickers in the 21 transparent floating balls 4 of contact.Water intaking cylinder 1 is taken out using rope 2, the gravity of water closes seal plate 10, only
Water plate 10 is closed in limit card block 11, the success of underground water sampling.
In order to observe water sample water level, distance water intaking cylinder top left and right two wall of 2/5 section of cylinder is equipped with sliding slot 16, makes horizontal blank
5 both ends of core bar slide up and down in sliding slot 16.Since buoyancy moves up transparent floating ball 4, horizontal blank core bar 5 is driven in sliding slot
Upward sliding in 16, until metal contact 23 is contacted with copper sheet in sliding slot 21 in horizontal blank core bar 5, LED light 7 flickers, water sample water
Amount reaches maximum, lifts water fetching device.
It is convenient in order to fetch water, the two symmetrical seal plates 10 of fan are equipped with distance water intaking cylinder bottom 1/5, pass through the conjunction of container both sides
Page 12 is used as corner, and 10 side of seal plate can open, close.Inverted T shaped limit card block 11 is equipped between two fan seal plates 10, makes two
Fan seal plate 10 is closed in limit card block 11.5 bottom of horizontal blank core bar, the inner side of seal plate 10 are equipped with magnet 22, flat hollow
10 side of seal plate is driven to open certain angle when bar 5 moves up, 10 drag effect of seal plate when reducing water inlet.
Leak during water lift in order to prevent, sealing is set in seal plate surrounding.
In order to easy-to-use, the Air Filter upper cover 3 of water fetching device and the detachable cleaning of the permeable filter screen 14 of inlet opening,
Installed using annular groove.
Present invention water intaking cylinder is quadrangular container, and detachable protective net upper cover, upper cover and rope phase are equipped with the top of water intaking cylinder
Even；Fetch water cylinder bottom lock and equipped with hook with bottom weight block.On water intaking four side chamber wall of cylinder, underground water leads to for inlet opening
The detachable filter screen crossed on inlet opening, which enters container and opens seal plate, is full of container.Transparent float spherical zone moves horizontal blank core bar
Move up, horizontal blank core bar is slided in sliding slot and moved up, and until metal contact is contacted with copper sheet, LED light flickers in transparent floating ball.Profit
Take out water intaking cylinder with rope, the gravity of water closes seal plate, and seal plate is closed in limit card block, underground water sampling into
Work(.
Water intaking cylinder is divided into upper, middle, and lower part.Top controls water, middle part water storage, lower part water inlet.Part on water intaking cylinder
Built in transparent floating ball and horizontal blank core bar.Transparent floating ball is connected with horizontal blank core bar by hose.2/5 section at the top of distance water intaking cylinder
Left and right two wall of cylinder is equipped with sliding slot, horizontal blank core bar both ends is slided up and down in sliding slot.Since buoyancy makes transparent floating ball
Move up, drive horizontal blank core bar upward sliding in sliding slot.
The two symmetrical seal plates of fan are equipped with distance water intaking cylinder bottom 1/5, by the hinge of container both sides, seal plate side can
Open, close.Inverted T shaped limit card block, the closing of the fan seal plate of control two are equipped between two fan seal plates.
The symmetrical flat thin magnet of two panels is posted in horizontal blank core bar bottom, iron plate is posted on the inside of two fan seal plates, by between iron plate
Gravitation increase water inlet seal plate at initial stage open angle.
Compact battery, electric wire and metal contact built in horizontal blank core, transparent floating ball is interior to be equipped with compact LED lamp, connects water
Electric wire is placed in the hose between core and transparent floating ball out of the void；At distance water intaking cylinder 1/5, i.e. sliding slot inside top posts copper
Piece, horizontal blank core slide up to metal contact during certain altitude and are contacted with copper sheet, and circuit is connected, and LED light passes through transparent floating ball
Transmit water sample water level positional information.
Water intaking cylinder lower part（1/5 section away from container bottom）For water inlet portion.Four wall of quadrangular container sets four inlet openings,
It is circular filter net on inlet opening；Outside of containers sets annular groove, and built-in sealing rubber ring, makes filter screen detachable.
Container bottom is closed, and sets hook, can add bottom weight block increase device own wt.
Container top is detachable protective net upper cover, and upper cover is connected with drawstring.
In underground water sampling process, water fetching device is put down by rope, device enters in water, and underground water is filled by fetching water
The filter screen for putting the placement of four sides enters device；Horizontal blank core bar is equipped with magnet, due to attraction of the magnet to iron plate and the impact of water
Power acts on, and seal plate is opened certain angle, and underground water enters water fetching device.Under buoyancy, transparent float spherical zone moves level
Cored slab moves up,；Circuit is connected when horizontal blank core is moved up to certain position, LED light flickers in transparent floating ball, water intaking
Terminate.Water fetching device is taken out using rope, seal plate is closed in limit card block under Gravitative Loads of water, ground water reserve
In water fetching device.It is the configuration of the present invention is simple, easy to operate, easy to carry.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained
Limitation of the present invention, on the premise of the spirit and scope of the present invention that appended claims define are not departed from, can to its
Various changes can be made in form and in details.
Claims (7)
1. a kind of Portable underground water sampler, including water intaking cylinder（1）With water intaking cylinder（1）On rope（2）, it is characterized in that,
The water intaking cylinder（1）Bottom sidewall is equipped with inlet opening（13）, inlet opening（13）Madial wall on symmetrical be hinged be connected to two only
Water plate（10）, two seal plates（10）Between be equipped with inverted T-shaped limit card block（11）, inverted T-shaped limit card block（11）For controlling two
Block seal plate（10）Closure, with limit card block（11）Opposite seal plate（10）End face is equipped with iron plate（9）；The seal plate
（10）The water intaking cylinder of top（1）Two the vertical chutes are arranged with inner wall（16）, two sliding slots（16）Between horizontal blank is set
Core bar（5）, horizontal blank core bar（5）Pass through hose（17）Connect transparent floating ball（4）；Horizontal blank core bar（5）Bottom is equipped with two blocks of magnetic
Iron（22）, pass through magnet（22）With corresponding iron plate（9）Between the corresponding seal plate of gravitation increase（10）Open angle.
2. a kind of Portable underground water sampler according to claim 1, it is characterized in that, the transparent floating ball（4）It is interior
Equipped with LED light（7）, LED light（7）By being arranged on hose（17）, horizontal blank core bar（5）In circuit（6）With metal contact
（23）It is connected, circuit（6）It is equipped with battery（8）；The sliding slot（16）Upper inside wall is equipped with copper sheet（21）；The transparent float
Ball（4）Drive horizontal blank core bar（5）Move up, horizontal blank core bar（5）In sliding slot（16）Middle slip moves up, until metal contact（2）
With copper sheet（21）Contact, circuit are connected, transparent floating ball circuit（6）Interior LED light（7）Flicker, LED light（7）Pass through transparent floating ball（4）
Transmit water sample water level positional information.
3. a kind of Portable underground water sampler according to claim 1 or 2, it is characterized in that, the water intaking cylinder（1）Bottom
Portion is equipped with ballast box（18）, ballast box（18）In be equipped with several clump weights（15）, clump weight（15）Institute is arranged on by hook
State water intaking cylinder（1）On bottom plate.
4. a kind of Portable underground water sampler according to claim 3, it is characterized in that, the water intaking cylinder（1）Top
Covered on the net equipped with detachable dustproof（9）, Air Filter upper cover（9）Side wall is equipped with air hole（3）, Air Filter upper cover（9）It is equipped with
Rope（2）.
5. a kind of Portable underground water sampler according to claim 4, it is characterized in that, the inlet opening（13）On set
There is detachable permeable filter screen（14）.
6. a kind of Portable underground water sampler according to claim 5, it is characterized in that, the seal plate（10）With taking
Water drum（1）Madial wall passes through hinge（12）It is connected, seal plate（10）With cylinder of fetching water（1）Sealing is equipped between madial wall（20）.
7. a kind of Portable underground water sampler according to claim 6, it is characterized in that, the water intaking cylinder（1）For four
Prism structure, four sidewall bottoms of tetragonous rod structure are respectively equipped with inlet opening（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491444.XA CN107907379B (en) | 2017-12-30 | 2017-12-30 | Portable groundwater sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491444.XA CN107907379B (en) | 2017-12-30 | 2017-12-30 | Portable groundwater sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107907379A true CN107907379A (en) | 2018-04-13 |
| CN107907379B CN107907379B (en) | 2023-12-22 |
Family
ID=61872241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711491444.XA Active CN107907379B (en) | 2017-12-30 | 2017-12-30 | Portable groundwater sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107907379B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068484A (en) * | 2019-04-29 | 2019-07-30 | 中国矿业大学 | A kind of underground water drenching water sample collection device and its method |
| CN110595823A (en) * | 2019-10-25 | 2019-12-20 | 扬州大学 | Underwater sampling device for detecting ethylene in rice body and using method thereof |
| CN110954373A (en) * | 2019-05-06 | 2020-04-03 | 河海大学 | Device capable of automatically collecting water samples in different rainfall periods |
| CN111006904A (en) * | 2019-11-25 | 2020-04-14 | 徐州志欧机电设备有限公司 | Water sample collection bottle |
| CN112857888A (en) * | 2021-01-08 | 2021-05-28 | 中国水利水电科学研究院 | Portable multifunctional water sampler |
| CN114459826A (en) * | 2022-04-12 | 2022-05-10 | 奥来国信（北京）检测技术有限责任公司 | Sewage sampling device for sewage detection and capable of performing layered sampling |
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| CN110068484A (en) * | 2019-04-29 | 2019-07-30 | 中国矿业大学 | A kind of underground water drenching water sample collection device and its method |
| CN110068484B (en) * | 2019-04-29 | 2024-02-20 | 中国矿业大学 | Underground water sample collecting device and method |
| CN110954373A (en) * | 2019-05-06 | 2020-04-03 | 河海大学 | Device capable of automatically collecting water samples in different rainfall periods |
| CN110954373B (en) * | 2019-05-06 | 2021-11-30 | 河海大学 | Device capable of automatically collecting water samples in different rainfall periods |
| CN110595823A (en) * | 2019-10-25 | 2019-12-20 | 扬州大学 | Underwater sampling device for detecting ethylene in rice body and using method thereof |
| CN111006904A (en) * | 2019-11-25 | 2020-04-14 | 徐州志欧机电设备有限公司 | Water sample collection bottle |
| CN112857888A (en) * | 2021-01-08 | 2021-05-28 | 中国水利水电科学研究院 | Portable multifunctional water sampler |
| CN114459826A (en) * | 2022-04-12 | 2022-05-10 | 奥来国信（北京）检测技术有限责任公司 | Sewage sampling device for sewage detection and capable of performing layered sampling |
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