CN219830459U - Groundwater layering rapid sampling equipment - Google Patents
Groundwater layering rapid sampling equipment Download PDFInfo
- Publication number
- CN219830459U CN219830459U CN202321080068.6U CN202321080068U CN219830459U CN 219830459 U CN219830459 U CN 219830459U CN 202321080068 U CN202321080068 U CN 202321080068U CN 219830459 U CN219830459 U CN 219830459U
- Authority
- CN
- China
- Prior art keywords
- sampling
- inner sleeve
- water inlet
- water
- outer sleeve
- 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.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 123
- 239000003673 groundwater Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 135
- 238000002955 isolation Methods 0.000 claims abstract description 52
- 238000004891 communication Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of groundwater sampling, in particular to groundwater layering rapid sampling equipment, which comprises: an outer sleeve, an inner sleeve and a sampling tube; the outer sleeve is sleeved outside the inner sleeve, the sampling tube and the inner sleeve are detachably arranged and positioned inside the inner sleeve, a plurality of isolation pads are arranged between the sampling tube and the inner sleeve, an isolation cavity is formed between any two adjacent isolation pads, and the sampling tube is communicated with the isolation cavity; be provided with a plurality of first water inlets on the outer tube, be provided with a plurality of second water inlets on the interior sleeve pipe corresponding with first water inlet, second water inlet and isolation chamber UNICOM, interior sleeve pipe rotates the setting for the outer tube, and control second water inlet is opened and is closed for first water inlet for the groundwater that is located different degree of depth can get into the isolation chamber through setting up first water inlet and the second water inlet on different high positions and sample, guarantees the accuracy of sampling, and can realize the simultaneous sampling of different aspect water, realizes quick sampling process.
Description
Technical Field
The utility model relates to the technical field of groundwater sampling, in particular to groundwater layering rapid sampling equipment.
Background
The underground water sampling technology is the core of underground water monitoring, and because the stratum is complicated, relatively impermeable layers exist in the stratum structure, and the underground water flows extremely slowly, so that the underground water is layered, indexes and composition components of each layer of water are different, and in order to know the condition of the underground water in more detail, the underground water needs to be sampled in a layered manner so as to ensure the accuracy of an analysis result.
In the related art, a multi-well monitoring sampling mode is generally adopted for layered sampling, namely monitoring wells with different depths are drilled in a monitoring range so as to realize groundwater sampling at different layers, and according to the number of samples to be sampled, a corresponding number of monitoring wells are required to be drilled, so that the construction and maintenance costs are high; the method can effectively save cost by arranging sampling tubes with different depths in one monitoring well to a selected monitoring layer, but can generate disturbance when the sampling tubes with different layers are pumped in the sampling process, so that the sampling tubes on the upper layer and the lower layer are influenced to work, and the sampling data is inaccurate.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the underground water layering rapid sampling device is provided, a rapid sampling process is realized, and the accuracy of sampling is ensured.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: an underground water layered rapid sampling device, comprising: an outer sleeve, an inner sleeve and a sampling tube; the outer sleeve is sleeved outside the inner sleeve, the sampling tube and the inner sleeve are detachably arranged and positioned inside the inner sleeve, a plurality of isolation pads are arranged between the sampling tube and the inner sleeve, an isolation cavity is formed between any two adjacent isolation pads, and the sampling tube is communicated with the isolation cavity;
the outer sleeve is provided with a plurality of first water inlets, the inner sleeve is provided with a plurality of second water inlets corresponding to the first water inlets, the second water inlets are communicated with the isolation cavity, the inner sleeve is rotatably arranged relative to the outer sleeve, and the second water inlets are controlled to be opened and closed relative to the first water inlets.
Further, each first water inlet and the corresponding second water inlet are arranged at the same height position and are communicated with the isolation cavity at the same height.
Furthermore, a plurality of sampling spaces are formed in the tube body of the sampling tube in a separated mode, a plurality of sampling ports are formed in the tube wall of the sampling tube, and each sampling port is communicated with the isolation cavity and the sampling space respectively.
Further, a limiting block is arranged at the bottom of the sampling tube, a limiting groove is formed in one side, facing the sampling tube, of the inner sleeve, the limiting block is limited in the limiting groove, and the axis of the sampling tube is perpendicular to the bottom surface of the inner sleeve.
Further, a filter disc is arranged on one side, facing the first water inlet, of each second water inlet, and a plurality of through filter holes are formed in the filter disc.
Further, a rotating gap is arranged between the outer sleeve and the inner sleeve, and the filter disc seals the rotating gap.
Further, the distance between the adjacent isolation pads can be adjusted.
Further, a plurality of plugs are also arranged, and the plugs are arranged on the pipe wall of the outer sleeve and are detachably connected with the first water inlet.
Further, the first water inlet and the second water inlet are respectively and reversely spirally arranged on the pipe walls of the outer sleeve and the inner sleeve, the inner sleeve is rotatably arranged relative to the outer sleeve, and the single second water inlet is controlled to be opened and closed relative to the single first water inlet.
Further, the first water inlets and the second water inlets are respectively and spirally arranged on the pipe walls of the outer sleeve and the inner sleeve in the same direction, the inner sleeve is rotatably arranged relative to the outer sleeve, and all the second water inlets are controlled to be opened and closed relative to all the first water inlets.
The beneficial effects of the utility model are as follows: according to the utility model, the opening and closing of the passage of the underground water layer entering the sampling device are controlled through the rotatably arranged inner sleeve and the outer sleeve, and meanwhile, the isolation cavity is formed between the outer sleeve and the inner sleeve through the plurality of isolation pads, so that underground water at different depths can enter the isolation cavity through the first water inlet and the second water inlet which are arranged at different height positions for sampling, the influence of the underground water at different layers is effectively avoided, the sampling accuracy is ensured, and the sampling device can realize simultaneous sampling of water bodies at different layers in a single sampling well and realize a rapid sampling process.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic structural diagram of an underground water layering rapid sampling device in an embodiment of the utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a top view of a groundwater layered rapid sampling device according to an embodiment of the utility model;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
FIG. 5 is an enlarged view at B in FIG. 4;
FIG. 6 is a cross-sectional view at B-B in FIG. 3;
FIG. 7 is an enlarged view at C in FIG. 6;
FIG. 8 is an enlarged view of FIG. 6 at D;
fig. 9 to 10 are schematic structural views of two arrangements of a first water inlet and a second water inlet in the embodiment of the present utility model.
Reference numerals: 01. an outer sleeve; 01a, a first water inlet; 02. an inner sleeve; 02a, a second water inlet; 02b, a limit groove; 03. a sampling tube; 03a, sampling space; 03b, sampling port; 03c, limiting blocks; 04. a spacer; 04a, isolating the cavity; 05. a filter sheet; 05a, filtering holes; 06. and (5) plugging.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The groundwater layered rapid sampling device as shown in fig. 1 to 10 comprises: an outer sleeve 01, an inner sleeve 02 and a sampling tube 03; the outer sleeve 01 is sleeved outside the inner sleeve 02, the sampling tube 03 and the inner sleeve 02 are detachably arranged and positioned inside the inner sleeve 02, a plurality of isolation pads 04 are arranged between the sampling tube 03 and the inner sleeve 02, an isolation cavity 04a is formed between any two adjacent isolation pads 04, and the sampling tube 03 is communicated with the isolation cavity 04 a;
the outer sleeve 01 is provided with a plurality of first water inlets 01a, the inner sleeve 02 is provided with a plurality of second water inlets 02a corresponding to the first water inlets 01a, the second water inlets 02a are communicated with the isolation cavity 04a, the inner sleeve 02 is rotatably arranged relative to the outer sleeve 01, and the second water inlets 02a are controlled to be opened and closed relative to the first water inlets 01 a.
According to the utility model, through the rotatably arranged inner sleeve 02 and the outer sleeve 01, the groundwater layer is controlled to enter the opening and closing of the sampling equipment channel, meanwhile, the isolation cavity 04a is formed between the outer sleeve 01 and the inner sleeve 02 through the plurality of isolation pads 04, so that groundwater at different depths can enter the isolation cavity 04a through the first water inlet 01a and the second water inlet 02a which are arranged at different height positions for sampling, the influence of groundwater at different layers is effectively avoided, the sampling accuracy is ensured, and the sampling equipment can realize simultaneous sampling of water at different layers in a single sampling well, and realize a rapid sampling process.
Before the underground sampling is needed, the outer sleeve 01, the inner sleeve 02 and the sampling tube 03 are assembled, the assembled outer sleeve 01 and the wall of the monitoring well are relatively fixed, the movable end parts of the outer sleeve 01 and the inner sleeve 02 are clamped with the inner sleeve 02 through the sealing cover, meanwhile, the sealing effect between the outer sleeve 01 and the inner sleeve 02 is achieved, the rotation effect of the inner sleeve 02 relative to the outer sleeve 01 can be driven to rotate through an external driving device, such as a motor, and the rotation angle of the inner sleeve 02 can be controlled through the rotation number of turns of the motor.
When the sampling equipment is in an initial state after assembly, the first water inlet 01a and the second water inlet 02a on the same height are not in the same position, namely the pipe wall of the outer sleeve 01 has a plugging effect on the second water inlet 02a, the inner sleeve 02 is not driven to rotate relative to the outer sleeve 01 when the outer sleeve 01 is not sampled, the first water inlet 01a and the second water inlet 02a on the same height are in the same position, namely the first water inlet 01a and the second water inlet 02a can form a communicating effect, a water sample of the water layer enters the corresponding isolation cavity 04a through the first water inlet 01a and the second water inlet 02a, preliminary collection is realized, the sampling pipe 03 is communicated with the isolation cavity 04a, the water sample in the isolation cavity 04a is sampled, the water sample in the outer sleeve 01 is in a relatively static state relative to the monitoring well in the whole process, the disturbance effect on the water sample layer caused by external motion is effectively avoided, the sampling process is completed in the sampling equipment, the stability of the sampling process is effectively ensured, and the accuracy of the sampling process is ensured.
On the basis of the above embodiment, in order to ensure that the first water inlet 01a can be opened and closed relative to the second water inlet 02a only through the relative rotation between the inner sleeve 02 and the outer sleeve 01, each first water inlet 01a and the corresponding second water inlet 02a are arranged at the same height position and are communicated with the isolation cavity 04a at the same height, so that when the inner sleeve 02 rotates for a certain angle relative to the outer sleeve 01, the communication effect between the isolation cavity 04a of the layer and a water sample in a monitoring well can be realized, and the sealing or opening of other isolation cavities 04a is not influenced.
On the basis of the above embodiment, a plurality of sampling spaces 03a are formed in the tube body of the sampling tube 03 in a separated manner, a plurality of sampling ports 03b are formed in the tube wall of the sampling tube 03, each sampling port 03b is respectively communicated with the corresponding isolation cavity 04a and the sampling space 03a, structures such as a piston or a valve body can be arranged in the sampling space 03a, and the sampling operation is performed on the water sample in the isolation cavity 04a through the sampling ports 03b, so that the influence on the sampling process in other water layers is avoided.
On the basis of the above embodiment, in order to facilitate the installation of the sampling tube 03 and ensure that the sealing effect can be formed between the assembled sampling tube 03 and the isolation plate and between the isolation plate and the wall of the inner sleeve 02, a limiting block 03c is arranged at the bottom of the sampling tube 03, a limiting groove 02b is arranged on one side of the inner sleeve 02 facing the sampling tube 03, the limiting block 03c is limited in the limiting groove 02b, and the axis of the sampling tube 03 is perpendicular to the bottom surface of the inner sleeve 02; in the assembly process of the sampling tube 03, when the limiting block 03c is completely limited in the limiting groove 02b, the fact that the sampling tube 03 is assembled in place at the moment is indicated, so that the phenomenon that the sampling tube 03 is inclined and the like is avoided, uneven stress of the isolation plate is effectively prevented, the situation that sealing is not tight and the like is effectively avoided, water samples in different isolation cavities 04a are prevented from being mixed, and the accuracy of sampling is guaranteed.
On the basis of the embodiment, a filter disc 05 is arranged on one side, facing the first water inlet 01a, of each second water inlet 02a, and a plurality of through filter holes 05a are formed in the filter disc 05; when the second water inlet 02a rotates to be communicated with the first water inlet 01a, water in the water layer is filtered through the filter holes 05a on the filter disc 05 at first, large-particle impurities are prevented from entering the isolation cavity 04a to influence the subsequent sampling process, and when enough water sample enters the isolation cavity 04a, the blocking effect on the second water inlet 02a needs to be realized again, at the moment, under the relative rotation effect of the inner pipe body and the outer pipe body, the inner wall of the outer pipe body forms a scraping effect on the filter disc 05, the impurities adhered to the outer side of the filter disc 05 are scraped, and the next filtering effect is not influenced.
On the basis of the above embodiment, in order to ensure that the inner sleeve 02 can rotate relative to the outer sleeve 01, a rotation gap is provided between the outer sleeve 01 and the inner sleeve 02, and in order to prevent a water sample in a monitoring well from entering the isolation cavity 04a from the rotation gap through the second water inlet 02a in the rotation process, a filter disc 05 is provided to seal the rotation gap, so that the water sample is limited to enter the isolation cavity 04a from the filter hole 05a only through the filtering action of the filter disc 05, and the sealing action is ensured.
On the basis of the above embodiment, in order to adapt to the sampling requirements between the water layers with different interval depths, the distance between the adjacent isolation pads 04 can be adjusted, and when the device is assembled, the isolation pads 04 can be sleeved at different height positions on the sampling tube 03 through changing the isolation pads 04, so that isolation cavities 04a with different thicknesses are formed, sampling is performed through sampling ports 03b of the sampling tube 03, and the adaptability is high.
On the basis of the embodiment, a plurality of plugs 06 are further arranged, and the plugs 06 are arranged on the pipe wall of the outer sleeve 01 and are detachably connected with the first water inlet 01 a; when the sampling device does not need to sample the water layer with the height where the plurality of first water inlets 01a are arranged, the plugs 06 are arranged to plug the first water inlets 01a, so that the corresponding second water inlets 02a are prevented from being opened in the rotation process of the inner sleeve 02, and the influence on the sampling process is reduced.
On the basis of the embodiment, the first water inlet 01a and the second water inlet 02a are arranged in two modes, one is that the first water inlet 01a and the second water inlet 02a are respectively arranged on the pipe walls of the outer sleeve 01 and the inner sleeve 02 in a reverse spiral mode, the inner sleeve 02 is arranged in a rotating mode relative to the outer sleeve 01, and the single second water inlet 02a is controlled to be opened and closed relative to the single first water inlet 01 a; after the water layer sampling of this degree of depth is accomplished, drive interior sleeve pipe 02 again and rotate, carry out the sampling of water layer on the next degree of depth, furthest reduces the influence effect of different degree of depth water layer sampling process, effectively guarantees the sampling accuracy.
Or the first water inlet 01a and the second water inlet 02a are respectively and spirally arranged on the pipe walls of the outer sleeve 01 and the inner sleeve 02 in the same direction, the inner sleeve 02 is rotatably arranged relative to the outer sleeve 01, and all the second water inlets 02a are controlled to be opened and closed relative to all the first water inlets 01 a; because the first water inlet 01a and the second water inlet 02a are arranged in the same direction in a spiral manner, and the spiral angles are equal, the inner sleeve 02 is driven to rotate by the same angle, namely, the second water inlet 02a at different heights can be opened relative to the first water inlet 01a, the sampling work of the water layer at each depth can be synchronously performed, the sampling speed is greatly increased, and the rapid sampling work is realized.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. An underground water layering rapid sampling device, comprising: an outer sleeve, an inner sleeve and a sampling tube; the outer sleeve is sleeved outside the inner sleeve, the sampling tube and the inner sleeve are detachably arranged and positioned inside the inner sleeve, a plurality of isolation pads are arranged between the sampling tube and the inner sleeve, an isolation cavity is formed between any two adjacent isolation pads, and the sampling tube is communicated with the isolation cavity;
the outer sleeve is provided with a plurality of first water inlets, the inner sleeve is provided with a plurality of second water inlets corresponding to the first water inlets, the second water inlets are communicated with the isolation cavity, the inner sleeve is rotatably arranged relative to the outer sleeve, and the second water inlets are controlled to be opened and closed relative to the first water inlets.
2. The apparatus of claim 1, wherein each of the first water inlets is disposed at the same height as the corresponding second water inlet and is in communication with the isolation chamber at the same height.
3. The underground water layering rapid sampling device according to claim 1, wherein a plurality of sampling spaces are formed in the tube body of the sampling tube in a separated mode, a plurality of sampling ports are formed in the tube wall of the sampling tube, and each sampling port is respectively communicated with the isolation cavity and the sampling space.
4. The groundwater layered rapid sampling device according to claim 1, wherein a limiting block is arranged at the bottom of the sampling tube, a limiting groove is arranged on one side of the inner sleeve, which faces the sampling tube, the limiting block is limited in the limiting groove, and the axis of the sampling tube is perpendicular to the bottom surface of the inner sleeve.
5. The groundwater layered rapid sampling device according to claim 1, wherein a filter disc is arranged on one side of each second water inlet facing the first water inlet, and a plurality of through filter holes are arranged on the filter disc.
6. The apparatus according to claim 5, wherein a rotational gap is provided between the outer sleeve and the inner sleeve, and the filter blocks the rotational gap.
7. The apparatus of claim 1, wherein the distance between adjacent spacer pads is adjustably positioned.
8. The groundwater layered rapid sampling device according to claim 1, further comprising a plurality of plugs, wherein the plugs are arranged on the wall of the outer sleeve and detachably connected with the first water inlet.
9. The apparatus according to any one of claims 1 to 8, wherein the first water inlet and the second water inlet are respectively and reversely spirally arranged on the walls of the outer sleeve and the inner sleeve, the inner sleeve is rotatably arranged relative to the outer sleeve, and the single second water inlet is controlled to be opened and closed relative to the single first water inlet.
10. The apparatus according to any one of claims 1 to 8, wherein the first water inlets and the second water inlets are respectively disposed on the walls of the outer sleeve and the inner sleeve in a spiral manner, the inner sleeve is rotatably disposed with respect to the outer sleeve, and all the second water inlets are controlled to be opened and closed with respect to all the first water inlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321080068.6U CN219830459U (en) | 2023-05-06 | 2023-05-06 | Groundwater layering rapid sampling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321080068.6U CN219830459U (en) | 2023-05-06 | 2023-05-06 | Groundwater layering rapid sampling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219830459U true CN219830459U (en) | 2023-10-13 |
Family
ID=88282800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321080068.6U Active CN219830459U (en) | 2023-05-06 | 2023-05-06 | Groundwater layering rapid sampling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219830459U (en) |
-
2023
- 2023-05-06 CN CN202321080068.6U patent/CN219830459U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108535043B (en) | Piston transfer type deep sea sediment pressure maintaining sampler | |
| US9784649B2 (en) | Silty floating mud collection device | |
| CN219641332U (en) | Underground water layered sampling device | |
| CN219830459U (en) | Groundwater layering rapid sampling equipment | |
| CN116698486A (en) | Wetland soil monitoring device and application method thereof | |
| CN107420100B (en) | Layered water pumping device and layered water pumping system | |
| CN114776287B (en) | Monitoring sampling equipment for oilfield wellhead | |
| CN211205826U (en) | Mine geology rock specimen sampling device | |
| CN113484074A (en) | Sampling device convenient to adjust for ground reconnaissance | |
| CN108360996B (en) | Wellhead rotating reversing blowout prevention integrated device | |
| CN111678732A (en) | Exploration hole water sampling device and using method thereof | |
| CN104482210B (en) | Tractor gear box body oil way hole leakage detection plugging component and plugging method | |
| CN208350410U (en) | Piston transfer type halmeic deposit pressure keeping sampler | |
| CN115235832A (en) | Underground water layering sampling device | |
| CN112665915B (en) | Groundwater sampling equipment capable of automatically adjusting sampling depth | |
| CN109944961B (en) | Four-way valve | |
| CN215169963U (en) | Water stop for layered water pumping of hydrogeology drilling | |
| CN214953460U (en) | River water quality testing layering sampling device | |
| CN213148438U (en) | Columnar sampler for lake sediments | |
| CN114813301A (en) | Rapid preparation method of solution to be detected for soil atrazine detection | |
| CN214944151U (en) | Water stop for pumping water in hydrogeology drilling | |
| CN209302545U (en) | It is a kind of to drive double rotating disc type energy recycle devices certainly | |
| CN117868717B (en) | Hollow oil-gas well monitoring shaft for high-temperature electric pump oil extraction | |
| CN214150000U (en) | Hydrogeology probing is with footpath pumping device many times | |
| CN218469921U (en) | Hydrology multifunctional flow monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |