CN207280790U - A kind of collection sampling apparatus of rainwater - Google Patents
A kind of collection sampling apparatus of rainwater Download PDFInfo
- Publication number
- CN207280790U CN207280790U CN201721044164.XU CN201721044164U CN207280790U CN 207280790 U CN207280790 U CN 207280790U CN 201721044164 U CN201721044164 U CN 201721044164U CN 207280790 U CN207280790 U CN 207280790U
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- cylinder
- water
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- chamber
- sampling apparatus
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- 238000005070 sampling Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000003651 drinking water Substances 0.000 claims abstract description 18
- 235000020188 drinking water Nutrition 0.000 claims abstract description 18
- 244000309464 bull Species 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of collection sampling apparatus of rainwater, including cylinder and the chamber that draws water, the cylinder upper end is equipped with kuppe, water inlet and metal mesh；Branching block, drinking-water pipe, connection water pipe, collection cover are equipped with cylinder and rotates bull stick；Cylinder right wall is equipped with draw water chamber and sewage draining exit；The chamber that draws water is equipped with feed inlet, piston plate, connecting rod, push plate, returning spring, discharge port and resettlement groove；Collection tube is equipped with resettlement groove；Cylinder left wall is equipped with motor；Cylinder lower end is equipped with earth stud.The utility model is collected rainwater and reduced by branching block by kuppe to be impacted；Rotation of the rainwater by gathering cover homogenizes, and quantitatively extracts and is injected in collection tube eventually through the chamber that draws water.
Description
Technical field
A kind of water sample acquisition device is the utility model is related to, is specifically a kind of collection sampling apparatus of rainwater.
Background technology
With the fast development of nowadays social process of industrialization, each city is all progressively establishing substantial amounts of engineering to produce
Process the various materials needed for Socialized Reading, and can all there be flue gas emission in many factories in production, these flue gas emissions and
The tail gas of vehicle is the same, and all air can be polluted.Impurity that can be in air entrainment when rainy, in rainwater together falls,
At this time just need to be collected rainwater detection, can so track the influence for understanding pollution for air in time, at the same time
Also it can understand whether the rainwater in pollution can damage ground vegetation and human body.
Existing rainwater collecting device common configuration is single, and rain collecting can produce precipitation after standing, so that the rain of collection
Certain deviation occurs in water sample；Existing rainwater collecting device samples after rainwater is collected directly to be arranged using valve pipe more
Put, so sampling is not easy to control quantitative.
The content of the invention
The purpose of this utility model is to provide a kind of collection sampling apparatus of rainwater, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model provides following technical solution：
A kind of collection sampling apparatus of rainwater, including cylinder and the chamber that draws water, the cylinder upper end welding are provided with kuppe,
The cylinder upper center is provided through water inlet, is inlayed in the water inlet and is provided with metal mesh, middle part in the cylinder
Welding is provided with branching block between front-rear side walls, and the branching block lower end is connected with drinking-water pipe, connects on the right side of the branching block
Connect and be provided with connection water pipe, cylinder right wall welding is provided with the chamber that draws water, the chamber left wall top of drawing water be provided through into
Material mouth, the intracavitary of drawing water are movably set with piston plate, are welded in the middle part of the piston plate lower end and be provided with connecting rod, under the connecting rod
End welding is provided with push plate, is connected with back between the push plate upper end and the chamber lower end of drawing water positioned at the connecting rod periphery
Multiple spring, the chamber right wall top of drawing water are provided through discharge port, and the chamber right wall welding of drawing water is provided with resettlement groove, described
Activity, which agrees with, in resettlement groove is provided with collection tube, and drinking-water pipe periphery lower end, which rotates, is provided with collection cover, left in the cylinder
Side vertically rotates and is provided with rotation bull stick, and the cylinder left wall top riveting is provided with motor, and cylinder lower end both sides are symmetrical
Welding is provided with earth stud, and the cylinder right wall lower part is provided through sewage draining exit, and the sewage draining exit is equipped with sealed valve cap.
As further program of the utility model：The drinking-water pipe lower end extends downward into bottom in the cylinder.
As further program of the utility model：The connection water pipe left end draws water through the branching block and with described
Pipe upper end is interconnected, and the connection water pipe right end extends to the right through the cylinder right wall.
As further program of the utility model：The feed inlet is connected with the connection water pipe right end, the charging
Inlayed in mouthful equipped with the unidirectional feed liquor baffle swung to the right.
As further program of the utility model：Connecting rod lower end activity is through the bottom of chamber portion of drawing water to downward
Stretch.
As further program of the utility model：Bushing is connected with the right side of the discharge port, is inlayed in the discharge port
Equipped with unidirectionally to the right go out liquid baffle.
As further program of the utility model：The collection tube upper end opening and the discharge port are corresponding.
As further program of the utility model：The collection cover lower end is bucket-shaped in covering, and the collection cover passes through bearing
It is rotatablely connected with the drinking-water pipe.
As further program of the utility model：The rotation bull stick upper and lower ends are turned by bearing and the cylinder
It is dynamic to connect, transmission is connected by belt between the peripheral and described collection cover top of the rotation bull stick.
As further program of the utility model：The motor housing and cylinder riveting are fixed, the motor
Output terminal is set up and between the rotation bull stick periphery by connecting transmission through the belt of the cylinder left wall, described
The control circuit of motor is connected with permanent circuit.
Compared with prior art, the beneficial effects of the utility model are：During use rainwater by kuppe enter and from into
The mouth of a river enters in cylinder, and can avoiding large size impurity by the stop of metal mesh, rainwater, which falls, to be shunted by entering in cylinder
Shunting falls in the bottom of cylinder on block, and such design can avoid rainwater from concentrating falling and cause to splash, reduce noise at the same time
Impact of the rainwater to cylinder body bottom is reduced, improves the service life of device；Start motor and drive collection by rotating bull stick
Cover rotates, and can so promote that impurity equal distribution is uniform in water body in cylinder, avoid because stand produce precipitation caused by the mistake that samples
Difference；Can driving connecting rod and piston plate by push plate, water body passes through pumping in cylinder in the chamber energy synchronization lifting that draws water, connecting rod decline
Water pipe and connection water pipe enter intracavitary of drawing water, and when connecting rod rises, intracavitary of drawing water water body is discharged by discharge port and flows into collection
Be collected in pipe, be so capable of the carry out rainwater sampling of accurate quantitative analysis, it is convenient to use, can largely more batches take
Sample；After the completion of sampling, clean water is injected into cylinder by water inlet, cylinder inboard wall is cleaned and is taken out by chamber water suction cleaning of drawing water
Inside water cavity, so as to avoid the error of cross-reference.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of the collection sampling apparatus of rainwater.
Fig. 2 is the structure diagram of chamber of drawing water in a kind of collection sampling apparatus of rainwater.
In figure：1- cylinders, 2- kuppes, 3- water inlets, 31- metal meshes, 4- branching blocks, 5- drinking-water pipes, 6- connection water pipes,
7- draws water chamber, 71- feed inlets, 72- piston plates, 73- connecting rods, 74- push plates, 75- returning springs, 76- discharge ports, 77- resettlement grooves,
8- collection tubes, 9- collection covers, 10- transmission bull sticks, 11- motors, 12- earth studs, 13- sewage draining exits.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1~2, in the utility model embodiment, a kind of collection sampling apparatus of rainwater, including cylinder 1 and take out
Water cavity 7,1 upper end of cylinder welding are provided with kuppe 2, and the kuppe 2 can collect rainwater, in 1 upper end of cylinder
Portion is provided through water inlet 3, and the rainwater of collection is entered in the cylinder 1 by the water inlet 3, inlayed in the water inlet 3
It is embedded and is equipped with metal mesh 31, the impurity that the metal mesh 31 can completely cut off extraneous large size enters in the cylinder 1, the cylinder
Welding is provided with branching block 4 between the front-rear side walls of middle part in 1, and the branching block 4 can shunt the rainwater fallen, avoid rainwater collection
In fall and cause to splash, can so reduce noise and the impact to 1 bottom of cylinder, 4 lower end of the branching block connection
Drinking-water pipe 5 is provided with, 5 lower end of drinking-water pipe extends downward into bottom in the cylinder 1, and the right side of branching block 4 connection is set
Connection water pipe 6 is equipped with, 6 left end of the connection water pipe is interconnected through the branching block 4 and with 5 upper end of drinking-water pipe, institute
State connection 6 right end of water pipe through 1 right wall of cylinder to extend to the right, 1 right wall of the cylinder welding is provided with the chamber 7 that draws water, described
7 left wall top of chamber of drawing water is provided through feed inlet 71, and the feed inlet 71 is connected with connection 6 right end of water pipe, it is described into
Inlayed in material mouth 71 and be equipped with the unidirectional feed liquor baffle swung to the right, piston plate 72, the work are movably set with the chamber 7 that draws water
Seben 72 welding can be provided with connecting rod 73, the company in the middle part of the energy mobile lifting of chamber 7 that draws water, 72 lower end of piston plate
The activity of 73 lower end of bar is extended downwardly through 7 bottom of chamber of drawing water, and 73 lower end of the connecting rod welding is provided with push plate 74, described to push away
Returning spring 75 is connected with positioned at 73 periphery of connecting rod between 74 upper end of plate and 7 lower end of chamber of drawing water, it is described to draw water
7 right wall top of chamber is provided through discharge port 76, and the right side of discharge port 76 is connected with bushing, inlays and set in the discharge port 76
Have it is unidirectional to the right go out liquid baffle, water body passes through the drinking-water pipe 5 and the connection in the cylinder 1 when the connecting rod 73 declines
Water pipe 6 draws water in chamber 7 described in entering, and when the connecting rod 73 rises, water body passes through 76 row of discharge port in the chamber 7 that draws water
Go out, 7 right wall of chamber of drawing water, which is welded, is provided with resettlement groove 77, and activity, which agrees with, in the resettlement groove 77 is provided with collection tube 8, described
8 upper end opening of collection tube and the discharge port 76 are corresponding, and water body can flow into described adopt after being flowed out by the discharge port 76
It is collected in collector 8, the peripheral lower end of drinking-water pipe 5, which rotates, is provided with collection cover 9, and collection 9 lower ends of cover are bucket-shaped in covering,
The collection cover 9 is rotatablely connected by bearing and the drinking-water pipe 5, and left vertical, which rotates, in the cylinder 1 is provided with rotation turn
Bar 10, rotation 10 upper and lower ends of bull stick are rotatablely connected by bearing and the cylinder 1, rotation bull stick 10 periphery and
Connected and be driven by belt between 9 tops of collection cover, 1 left wall top of the cylinder riveting is provided with motor 11, the electricity
11 shell of machine and the riveting of the cylinder 1 are fixed, and the output terminal of the motor 11 sets up and rotates the periphery of bull stick 10 with described
Between transmission connected by the belt through 1 left wall of cylinder, the control circuit of the motor 11 is connected with permanent circuit,
The motor 11 drives the collection to cover 9 and rotates after starting by the rotation bull stick 10, so as to promote in the cylinder 1
Material is evenly distributed in water body, avoids the error sampled caused by standing generation precipitation, the 1 lower end both sides of cylinder are symmetrically welded
Earth stud 12 is provided with, the earth stud 12 accesses underground, so that the stabilization of the cylinder 1 is kept, 1 right wall of cylinder
Lower part is provided through sewage draining exit 13, and the sewage draining exit 13 is equipped with sealed valve cap, after sampling use, by water inlet 3 to cylinder
Injection clean water in body 1, cleans 1 inner wall of cylinder and is drawn water by drawing water described in the water suction cleaning of chamber 7 inside chamber 7, so as to keep away
Exempt from the error of cross-reference, sewage is discharged by the sewage draining exit 13.
The operation principle of the utility model is：Rainwater is entered by kuppe 2 and enters cylinder 1 from water inlet 3 during use
Interior, can avoiding large size impurity by the stop of metal mesh 31, rainwater falls to be shunted on branching block 4 by entering in cylinder 1
Fall in the bottom of cylinder 1, such design can avoid rainwater from concentrating falling and cause to splash, reduce noise and also reduce rain at the same time
Impact of the water to 1 bottom of cylinder, improves the service life of device；Start motor 11 and drive collection cover 9 by rotating bull stick 10
Rotate, can so promote that impurity equal distribution is uniform in water body in cylinder 1, avoid because stand produce precipitation caused by the mistake that samples
Difference；By push plate 74 connecting rod 73 and piston plate 72 can be driven in the energy synchronization lifting of chamber 7 that draws water, the decline of connecting rod 73 in cylinder 1
Water body is entered by drinking-water pipe 5 and connection water pipe 6 to draw water in chamber 7, and when connecting rod 73 rises, water body passes through discharging in the chamber 7 that draws water
Mouth 76 is discharged and flowed into collection tube 8 and is collected, and is so capable of the carry out rainwater sampling of accurate quantitative analysis, convenient to use,
Can largely more batches be sampled；After the completion of sampling, clean water is injected into cylinder 1 by water inlet 3, is cleaned in cylinder 1
Wall is simultaneously drawn water inside chamber 7 by the chamber 7 that the draws water cleaning that absorbs water, so as to avoid the error of cross-reference, sewage by sewage draining exit 13 into
Row discharge.
The standardized element that the utility model uses can commercially, shaped piece according to specification and attached drawing
Record can carry out customized, the specific connection mode of each part is using bolt ripe in the prior art, rivet, weldering
The conventional means such as connect, machinery, part and equipment are using in the prior art, conventional model, plus circuit connection using existing
Conventional connection mode in technology, this will not be detailed here.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (10)
1. a kind of collection sampling apparatus of rainwater, including cylinder（1）With the chamber that draws water（7）, it is characterised in that the cylinder（1）On
End welding is provided with kuppe（2）, the cylinder（1）Upper center is provided through water inlet（3）, the water inlet（3）In
Inlay and be provided with metal mesh（31）, the cylinder（1）Welding is provided with branching block between interior middle part front-rear side walls（4）, described point
Flow block（4）Lower end is connected with drinking-water pipe（5）, the branching block（4）Right side is connected with connection water pipe（6）, the cylinder
Body（1）Right wall welding is provided with the chamber that draws water（7）, the chamber that draws water（7）Left wall top is provided through feed inlet（71）, the pumping
Water cavity（7）Inside it is movably set with piston plate（72）, the piston plate（72）Welding is provided with connecting rod in the middle part of lower end（73）, the company
Bar（73）Lower end welding is provided with push plate（74）, the push plate（74）Upper end and the chamber that draws water（7）Positioned at described between lower end
Connecting rod（73）Periphery is connected with returning spring（75）, the chamber that draws water（7）Right wall top is provided through discharge port（76）,
The chamber that draws water（7）Right wall welding is provided with resettlement groove（77）, the resettlement groove（77）Interior activity, which agrees with, is provided with collection tube
（8）, the drinking-water pipe（5）Peripheral lower end, which rotates, is provided with collection cover（9）, the cylinder（1）Interior left vertical is rotated and is provided with
Rotate bull stick（10）, the cylinder（1）The riveting of left wall top is provided with motor（11）, the cylinder（1）Lower end both sides balanced welding
Connect and be provided with earth stud（12）, the cylinder（1）Right wall lower part is provided through sewage draining exit（13）, the sewage draining exit（13）On
Equipped with sealed valve cap.
A kind of 2. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the drinking-water pipe（5）Lower end
Extend downward into the cylinder（1）Interior bottom.
A kind of 3. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the connection water pipe（6）It is left
The branching block is run through at end（4）And with the drinking-water pipe（5）Upper end is interconnected, the connection water pipe（6）Right end is through described
Cylinder（1）Right wall extends to the right.
A kind of 4. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the feed inlet（71）And institute
State connection water pipe（6）Right end connects, the feed inlet（71）Inside inlay equipped with the unidirectional feed liquor baffle swung to the right.
A kind of 5. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the connecting rod（73）Live lower end
The dynamic chamber that draws water described in（7）Bottom extends downwardly.
A kind of 6. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the discharge port（76）Right side
It is connected with bushing, the discharge port（76）Inside inlay equipped with it is unidirectional to the right go out liquid baffle.
A kind of 7. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the collection tube（8）Upper end
Opening and the discharge port（76）It is corresponding.
A kind of 8. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the collection cover（9）Lower end
It is bucket-shaped in cover, the collection cover（9）Pass through bearing and the drinking-water pipe（5）Rotation connection.
A kind of 9. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the rotation bull stick（10）On
Lower both ends pass through bearing and the cylinder（1）Rotation connection, the rotation bull stick（10）Peripheral and described collection cover（9）Top
Between pass through belt connection transmission.
A kind of 10. collection sampling apparatus of rainwater according to claim 1, it is characterised in that the motor（11）Shell
With the cylinder（1）Riveting is fixed, the motor（11）Output terminal set up and with the rotation bull stick（10）Periphery
Between by through the cylinder（1）The belt connection transmission of left wall, the motor（11）Control circuit be connected with permanent circuit
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044164.XU CN207280790U (en) | 2017-08-21 | 2017-08-21 | A kind of collection sampling apparatus of rainwater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044164.XU CN207280790U (en) | 2017-08-21 | 2017-08-21 | A kind of collection sampling apparatus of rainwater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207280790U true CN207280790U (en) | 2018-04-27 |
Family
ID=61983545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721044164.XU Expired - Fee Related CN207280790U (en) | 2017-08-21 | 2017-08-21 | A kind of collection sampling apparatus of rainwater |
Country Status (1)
| Country | Link |
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| CN (1) | CN207280790U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211622A (en) * | 2018-09-27 | 2019-01-15 | 天津生态城水务投资建设有限公司 | A kind of initial rainwater sample collection device |
| CN109540607A (en) * | 2018-12-20 | 2019-03-29 | 中化地质矿山总局化工地质调查总院 | Canopy acid rain collection system is worn to forest |
| CN110615546A (en) * | 2019-10-18 | 2019-12-27 | 福建创投环保科技有限公司 | High concentration printing and dyeing wastewater treatment device based on active carbon filtration treatment |
| CN112362398A (en) * | 2020-10-26 | 2021-02-12 | 江苏旭龙水务有限公司 | Sewage sampling device and sewage sampling method |
| CN114166577A (en) * | 2021-12-02 | 2022-03-11 | 山东省地质矿产勘查开发局第七地质大队（山东省第七地质矿产勘查院） | Hydrogeology wetland water depthkeeping sample thief |
-
2017
- 2017-08-21 CN CN201721044164.XU patent/CN207280790U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211622A (en) * | 2018-09-27 | 2019-01-15 | 天津生态城水务投资建设有限公司 | A kind of initial rainwater sample collection device |
| CN109211622B (en) * | 2018-09-27 | 2023-11-17 | 天津生态城水务投资建设有限公司 | Initial rainwater sampling collector |
| CN109540607A (en) * | 2018-12-20 | 2019-03-29 | 中化地质矿山总局化工地质调查总院 | Canopy acid rain collection system is worn to forest |
| CN109540607B (en) * | 2018-12-20 | 2021-03-23 | 中化地质矿山总局化工地质调查总院 | Canopy acid rain collection system is worn to forest |
| CN110615546A (en) * | 2019-10-18 | 2019-12-27 | 福建创投环保科技有限公司 | High concentration printing and dyeing wastewater treatment device based on active carbon filtration treatment |
| CN112362398A (en) * | 2020-10-26 | 2021-02-12 | 江苏旭龙水务有限公司 | Sewage sampling device and sewage sampling method |
| CN114166577A (en) * | 2021-12-02 | 2022-03-11 | 山东省地质矿产勘查开发局第七地质大队（山东省第七地质矿产勘查院） | Hydrogeology wetland water depthkeeping sample thief |
| CN114166577B (en) * | 2021-12-02 | 2024-01-26 | 山东省地质矿产勘查开发局第七地质大队（山东省第七地质矿产勘查院） | Hydrogeology wetland water body depth-fixing sampler |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |