CN219495765U - Water sampler - Google Patents
Water sampler Download PDFInfo
- Publication number
- CN219495765U CN219495765U CN202320726843.4U CN202320726843U CN219495765U CN 219495765 U CN219495765 U CN 219495765U CN 202320726843 U CN202320726843 U CN 202320726843U CN 219495765 U CN219495765 U CN 219495765U
- Authority
- CN
- China
- Prior art keywords
- water sampler
- sampler body
- water
- protection ring
- ring
- 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
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
- Y02A20/108—Rainwater harvesting
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of water quality sampling instruments, in particular to a water sampler, which comprises a water sampler body and an outer protection device, wherein the upper end and the lower end of the water sampler body are respectively provided with a movable sealing cover and a movable sealing bottom; the upper protection ring is fixedly arranged on an opening at the upper end of the water sampler body, the movable sealing cover is arranged on the upper protection ring, and the lower protection ring is fixed at the outer bottom of the water sampler body; the distance between one side of each shaft rod, which is close to the water sampler body, and the water sampler body is 2-4 cm, and an upper cover plate is fixedly arranged at the upper end of the shaft rod and is positioned above the upper protection ring. The external protection device of the utility model ensures that only the external protection device collides with the chord, the pool wall or the pool bottom stone and the like when the water sampler samples on a ship or throws and samples on a shore, and the water sampler body is not collided, thus the arrangement greatly improves the service life of the water sampler body.
Description
Technical Field
The utility model relates to the technical field of water quality sampling instruments, in particular to a water sampler.
Background
In the investigation of water resource environment, water samples with a specified depth need to be collected by a water sampler. Most of the water sampling devices used at present are bottles with upper and lower openings made of organic glass, and the upper and lower ends of the bottles are respectively provided with a movable sealing cover and a movable sealing bottom. The working process is as follows: when the water sampler is put into water, in the process that the water sampler sinks downwards, the movable bottom cover is propped open by the water, so that the movable bottom cover is opened, the water enters the bottle body, and then the movable cover is propped open by the water entering the bottle body; when the water sampler reaches a preset depth (namely, the water sampler is used for collecting the water sample of the corresponding water layer), the water sampler is pulled up, at the moment, the bottle body moves upwards, the movable sealing cover and the movable sealing bottom are closed by water pressure, the water in the bottle body is sealed, and the water in the cylinder body can be ensured to be a water sample with the preset depth, so that the collected water sample meets the specified depth requirement. However, the existing water sampler has the following problems:
(1) Because the bottle body is made of organic glass, the bottle body is extremely easy to damage when sampling on a ship collides with a string of the ship or shore throwing collection collides with a pool wall and a pool bottom stone, and the service life is short;
(2) When the water sampler reaches a deeper water level, the water is ejected to open the movable bottom sealing due to the larger water pressure, and the limiting piece in the water sampler for limiting the movable bottom sealing movement range receives larger impact force, so that the service life of the current limiting piece is shorter;
(3) The water sampler has the problems of insufficient self weight, incapability of ensuring vertical descent, larger error of a water layer of water sampling, low accuracy and the like.
Disclosure of Invention
The utility model aims to solve the problems, and provides a water sampler, wherein when the water sampler is used for sampling on a ship or performing bank throwing sampling, only an outer protection ring collides with a string, a tank wall or a tank bottom stone and the like, and a water sampler body is not collided, so that the service life of the water sampler body is greatly prolonged.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a water sampler, includes the water sampler body, the upper end and the lower extreme of water sampler body are equipped with activity closing cap and activity back cover respectively, the inner bottom of water sampler body is equipped with the locating part that is used for restricting activity range of activity back cover, the lower extreme side of water sampler body is equipped with the outlet pipe, its characterized in that:
the outer protection device comprises an upper protection ring, a lower protection ring and a plurality of shaft rods fixedly penetrating through the upper protection ring and the lower protection ring; the upper protection ring is fixedly arranged on an opening at the upper end of the water sampler body, the movable sealing cover is arranged on the upper protection ring, and the lower protection ring is fixed at the outer bottom of the water sampler body so as to fix the water sampler body through the upper protection ring and the lower protection ring; the distance between one side of each shaft rod, which is close to the water sampler body, and the water sampler body is 2-4 cm, an upper cover plate is fixedly arranged at the upper end of each shaft rod in a penetrating manner, the upper cover plate is positioned above the upper protection ring, the distance between the upper cover plate and the upper protection ring is 3-7 cm, and a hanging ring is arranged on the upper cover plate.
In the utility model, further, the upper end of the water sampler body is also provided with an upper fixing ring, and the upper protection ring is arranged on the upper fixing ring; the outer bottom of the water sampler body is also provided with a lower fixing ring, and the lower fixing ring is arranged on the lower protection ring.
In the utility model, further, the outer diameter of the upper fixing ring is between the outer diameter of the upper protection ring and the outer diameter of the water sampler body, the outer diameter of the lower fixing ring is the same as the outer diameter of the upper fixing ring, and the heights of the upper fixing ring and the lower fixing ring are 2-3 cm.
In the utility model, a plurality of limiting pieces are arranged, the limiting pieces are enclosed into a circle at the inner bottom of the water sampler body, the lower end of each limiting piece is fixed on the inner bottom of the water sampler body, and one side of each limiting piece is fixedly connected with the inner side surface of the water sampler body.
In the utility model, further, the limiting piece comprises a stand column and a limiting cross rod fixedly arranged at the upper end of the stand column, one end, far away from the limiting cross rod, of the stand column is fixed on the inner bottom of the water sampler body, one side of the stand column is fixedly connected with the side face of the water sampler body, and the height of the stand column is 4-5 cm.
In the utility model, further, the upright post and the limiting cross rod are integrally formed, and the upright post and the limiting cross rod are made of organic glass.
In the utility model, further, the upper edge of the movable sealing cover is fixedly provided with a widening part which is convenient for opening the cover, and the widening part is arranged at the upper edge of the movable sealing cover in a circle.
In the utility model, a sleeve or a buckle for fixing one end of the water outlet pipe far away from the water sampler body is further fixedly arranged on one shaft lever close to the water outlet pipe.
In the utility model, the distance between the lower end of the shaft rod and the bottom of the water sampler body is 2-8 cm, the bottom of the water sampler body is provided with the balancing weight, and the balancing weight is fixedly arranged on the shaft rod in a penetrating way.
In the utility model, the balancing weight is a cylinder with the thickness of 2-3 cm, a through hole with the diameter larger than or equal to the diameter of the lower opening of the water sampler body is arranged in the middle of the cylinder, and the outer diameter of the cylinder is smaller than or equal to the outer diameter of the lower protection ring.
By adopting the technical scheme, the utility model has the following beneficial effects:
according to the utility model, the outer protection device is fixedly arranged outside the water sampler body, and comprises the upper protection ring, the lower protection ring and the plurality of shaft rods fixedly penetrating through the upper protection ring and the lower protection ring, wherein the distance between one side of each shaft rod, which is close to the water sampler body, and the water sampler body is 2-4 cm, so that the upper protection ring, the lower protection ring and the shaft rods can form the outer protection ring for protecting the water sampler body, and further, when the water sampler samples on a ship or throws and samples on a shore, only the outer protection ring collides with a seawing, a pool wall or a pool bottom stone and the like, and the water sampler body is not collided, so that the service life of the water sampler is greatly prolonged.
Meanwhile, as the plurality of limiting pieces for limiting the movement range of the movable bottom sealing are arranged at the inner bottom of the water sampler body, the plurality of limiting pieces enclose a circle at the inner bottom of the water sampler body, the lower end of each limiting piece is fixed on the inner bottom of the water sampler body, and one side of each limiting piece is fixedly connected with the inner side surface of the water sampler body, the firmness of each limiting piece in the water sampler body is greatly improved, and the service life of each limiting piece is further prolonged.
Drawings
FIG. 1 is a schematic view of a water sampler according to an embodiment 1 of the present utility model;
fig. 2 is a schematic structural diagram of a water sampler according to embodiment 2 of the present utility model.
The reference numerals in the drawings are: the water sampler comprises a 1-water sampler body, an 11-upper fixing ring, a 12-lower fixing ring, a 2-movable sealing cover, a 21-widening part, a 3-movable sealing bottom, a 4-water outlet pipe, a 5-limiting part, a 51-upright post, a 52-limiting cross rod, a 6-outer protection device, a 61-upper protection ring, a 62-lower protection ring, a 63-shaft rod, a 64-upper cover plate, a 65-lifting ring, a 7-pull rope, an 8-plug barrel, a 9-thermometer and a 10-balancing weight.
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. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments of the utility model, are intended to be within the scope of the utility model.
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 a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "first," "second," and the like are used herein for illustrative purposes only.
Examples
Referring to fig. 1, a water sampler includes a water sampler body 1 and an outer protection device 6, wherein the outer diameter of the water sampler body 1 is 15 cm, and the height is 32 cm. The water sampler body 1 is internally provided with a thermometer 9 for testing the temperature of a water sample, and the upper end and the lower end of the water sampler body 1 are respectively provided with a movable sealing cover 2 and a movable sealing bottom 3 for respectively covering an upper opening and a lower opening of the water sampler body 1. The water sampler body 1, the movable sealing cover 2 and the movable sealing bottom 3 are all made of organic glass materials, so the water sampler body 1 is transparent. The side of the lower end of the water sampler body 1 is provided with a water outlet pipe 4. The inner bottom of the water sampler body 1 is provided with a plurality of limiting pieces 5 used for limiting the movement range of the movable bottom sealing 3, the limiting pieces 5 form a circle on the inner bottom of the water sampler body 1, the lower end of each limiting piece 5 is fixed on the inner bottom of the water sampler body 1, and one side of each limiting piece 5 is fixedly connected with the inner side surface of the water sampler body 1. The fixing mode of the limiting piece 5 greatly improves the firmness of the limiting piece 5 in the water sampler body 1, and further improves the service life of the water sampler. In this embodiment, three limiting members 5 are provided, and the three limiting members 5 are disposed at equal intervals on the inner bottom of the water sampler body 1.
The outer protector 6 includes an upper guard ring 61, a lower guard ring 62, and a shaft 63 fixedly penetrating the upper guard ring 61 and the lower guard ring 62, and the shaft 63 is fixedly connected with the upper guard ring 61 and the lower guard ring 62 by nuts. The upper guard ring 61 is fixedly arranged on the upper end opening of the water sampler body 1, the movable sealing cover 2 is arranged on the upper guard ring 61, and the lower guard ring 62 is fixed at the outer bottom (below the movable sealing bottom 3) of the water sampler body 1, so that the water sampler body 1 is fixed through the upper guard ring 61 and the lower guard ring 62. Accordingly, the diameters of the middle through holes of the upper guard ring 61 and the lower guard ring 62 are respectively larger than the diameters of the upper opening and the lower opening of the water sampler body 1 according to the water sampling requirement, so that water can smoothly enter the water sampler through the lower opening by passing through the middle through holes of the lower guard ring 62. The shaft rods 63 are provided with a plurality of shaft rods 63, and the distance between one side of each shaft rod 63 close to the water sampler body 1 and the water sampler body 1 is 2-4 cm. Specifically, six shaft rods 63 are provided in this embodiment, and a distance between one side of each shaft rod 63, which is close to the water sampler body 1, and the water sampler body 1 is 3 cm. The arrangement is such that the upper guard ring 61, the lower guard ring 62 and the plurality of shafts 63 form an outer guard ring for protecting the water sampler body 1, so that when the water sampler samples on a ship or throws the water on a shore, only the outer guard ring collides with the ship, the tank wall or the tank bottom stone, etc., and the water sampler body 1 is not collided, thus the arrangement greatly improves the service life of the water sampler body.
The upper end of the shaft 63 is further fixedly provided with an upper cover plate 64, the upper cover plate 64 is located above the upper protection ring 62, and the distance between the upper cover plate 64 and the upper protection ring 62 is 3-7 cm, so that the movable cover 2 has a proper movable range. Specifically, in this embodiment, the distance between the upper cover plate 64 and the upper guard ring 62 is 5 cm. The upper cover plate 64 is also provided with a hanging ring 65. When in use, the lifting ring 65 is connected with the pull rope 7, and the water sampler is put into water or pulled out of the water through the pull rope 7.
As a further specific technical scheme, the upper end of the water sampler body 1 is further provided with an upper fixing ring 11, and the upper protecting ring 61 is arranged on the upper fixing ring 11; the outer bottom of the water sampler body 1 is also provided with a lower fixing ring 12, and the lower fixing ring 12 is arranged on a lower protection ring 62. The outer diameter of the upper fixing ring 11 is between the outer diameter of the upper protection ring 61 and the outer diameter of the water sampler body 1, i.e. the outer diameter of the upper fixing ring 11 is smaller than the outer diameter of the upper protection ring 61 and larger than the outer diameter of the water sampler body 1. The outer diameter of the lower fixing ring 12 is the same as that of the upper fixing ring 11, in this embodiment, the outer diameters of the upper fixing ring 11 and the lower fixing ring 12 are 17 cm, and the heights of the upper fixing ring 11 and the lower fixing ring 12 are 3 cm. And the upper fixing ring 11 and the lower fixing ring 12 are made of transparent acrylic material (organic glass). Of course, the diameters of the middle through holes of the upper fixing ring 11 and the lower fixing ring 12 are respectively larger than (or equal to) the diameters of the upper opening and the lower opening of the water sampler body 1, so that water can smoothly enter the water sampler through the lower opening by passing through the middle through holes of the lower protecting ring 62 and the lower fixing ring 12. The upper fixing ring 11 and the lower fixing ring 12 can play a role in reinforcing and sealing, and can also prevent the water sampler from slipping and sample-moving in the use process (because the outer surface of the sampler body 1 is smooth, the existing water sampler is easy to slip and sample-moving when the water sampler is taken out from water and touches the ship side).
As a further specific technical scheme, the limiting member 5 includes a vertical column 51 and a limiting cross rod 52 fixedly arranged at the upper end of the vertical column 51, and in this embodiment, the limiting cross rod 52 and the vertical column 51 are integrally formed and made of organic glass. The one end that spacing horizontal pole 52 was kept away from to stand 51 adopts organic glass glue to fasten and bonds on the interior bottom of water sampler body 1, and one side of stand 51 adopts organic glass glue to fasten and bonds on the medial surface of water sampler body 1, this setting, the bottom and the lateral surface of stand 51 all adopt organic glass glue to fasten with water sampler body 1 to bond, the firm degree of locating part 5 in water sampler body 1 has been improved greatly, and then its life is improved, and because the internal stainless steel screw fixation that need not of water sampler 1, the phenomenon of rusting has appeared in having avoided water sampler body 1, the water in the water sampler has been prevented receives the pollution of rust. In addition, the height of the upright post 51 is 4-5 cm, the upright post 51 and the limit cross rod 52 at the height are matched to limit the upward movement amplitude of the movable bottom sealing 3, so that the upward movement amplitude of the movable bottom sealing 3 is just suitable, the upward movement amplitude of the movable bottom sealing 3 can be prevented from being too large, the bottom opening of the water sampler body 1 can not be sealed after water collection, the movable bottom sealing 3 can be ensured to be opened to a proper degree during water collection, and the water inflow is avoided.
As a further specific technical scheme, the upper edge of the movable cover 2 is further fixedly provided with a widened portion 21, and the widened portion 21 is arranged at the upper edge of the movable cover 2 in a circle, so that the cover is more convenient and easy to open.
As a further specific technical solution, an insertion tube 8 is further fixed on the shaft 63 near the water outlet tube 4, for fixing one end of the water outlet tube 4 far away from the water sampler body 1, and of course, in other embodiments, a buckle may be used to replace the insertion tube 8.
Example 2
The structure of the water sampler according to this embodiment is substantially the same as that of the water sampler according to embodiment 1, except that the length of the shaft 63 of this embodiment is longer, so that the distance between the lower end of the shaft 63 and the bottom of the lower protection ring 62 is 5 cm, although other distances between 2 cm and 8 cm may be alternatively provided in other embodiments, so that one or more balancing weights 10 may be provided at the bottom of the lower protection ring 62, and the balancing weights 10 are fixedly installed on the section of the shaft 63 of the lower protection ring 62, as shown in fig. 2. Correspondingly, the middle part of the balancing weight 10 is also provided with a through hole with the diameter equal to that of the through hole of the lower protection ring 62, so that water can smoothly enter the water sampler body 1 through the balancing weight 10 and the lower protection ring 62 and the lower opening. Specifically, the weight 10 is a cylinder having a thickness of 3 cm and an outer diameter of the cylinder is slightly smaller than that of the lower guard ring 62. The weight of the water sampler can be increased by arranging the balancing weight 10, so that the water sampler is prevented from being easily drifted at the position where water is deeper or water flow is urgent, and the water sampler can be placed in the water at the position where water is deeper or water flow is urgent, and is convenient for collecting the water at the position where water is deeper or water flow is urgent.
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 herein in the description of the utility model 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.
Claims (10)
1. The utility model provides a water sampler, includes the water sampler body, the upper end and the lower extreme of water sampler body are equipped with activity closing cap and activity back cover respectively, the inner bottom of water sampler body is equipped with the locating part that is used for restricting activity range of activity back cover, the lower extreme side of water sampler body is equipped with the outlet pipe, its characterized in that:
the outer protection device comprises an upper protection ring, a lower protection ring and a plurality of shaft rods fixedly penetrating through the upper protection ring and the lower protection ring; the upper protection ring is fixedly arranged on an opening at the upper end of the water sampler body, the movable sealing cover is arranged on the upper protection ring, and the lower protection ring is fixed at the outer bottom of the water sampler body so as to fix the water sampler body through the upper protection ring and the lower protection ring; the distance between one side of each shaft rod, which is close to the water sampler body, and the water sampler body is 2-4 cm, an upper cover plate is fixedly arranged at the upper end of each shaft rod in a penetrating manner, the upper cover plate is positioned above the upper protection ring, the distance between the upper cover plate and the upper protection ring is 3-7 cm, and a hanging ring is arranged on the upper cover plate.
2. A water sampler as in claim 1, wherein: an upper fixing ring is further arranged at the upper end of the water sampler body, and the upper protection ring is arranged on the upper fixing ring; the outer bottom of the water sampler body is also provided with a lower fixing ring, and the lower fixing ring is arranged on the lower protection ring.
3. A water sampler as in claim 2, wherein: the outer diameter of the upper fixing ring is between the outer diameter of the upper protection ring and the outer diameter of the water sampler body, the outer diameter of the lower fixing ring is the same as the outer diameter of the upper fixing ring, and the heights of the upper fixing ring and the lower fixing ring are 2-3 cm.
4. A water sampler as in claim 1, wherein: the limiting pieces are arranged in a plurality, the limiting pieces encircle the inner bottom of the water sampler body to form a circle, the lower ends of the limiting pieces are fixed on the inner bottom of the water sampler body, and one side of each limiting piece is fixedly connected with the inner side face of the water sampler body.
5. A water sampler as in claim 4, wherein: the limiting piece comprises a stand column and a limiting cross rod fixedly arranged at the upper end of the stand column, one end, away from the limiting cross rod, of the stand column is fixed on the inner bottom of the water sampler body, one side of the stand column is fixedly connected with the side face of the water sampler body, and the height of the stand column is 4-5 cm.
6. A water sampler as in claim 5, wherein: the stand and the spacing horizontal pole integrated into one piece, just stand and the material of spacing horizontal pole are organic glass.
7. A water sampler as in claim 5, wherein: the upper edge of the movable sealing cover is fixedly provided with a widening part which is convenient for uncovering, and the widening part is arranged at the upper edge of the movable sealing cover in a circle.
8. A water sampler as in claim 5, wherein: and a plug tube or a buckle for fixing one end of the water outlet pipe, which is far away from the water sampler body, is also fixedly arranged on one shaft lever, which is close to the water outlet pipe.
9. A water sampler as in claim 5, wherein: the distance between the lower end of the shaft rod and the bottom of the lower protection ring is 2-8 cm, the bottom of the lower protection ring is provided with a balancing weight, and the balancing weight is fixedly arranged on the shaft rod in a penetrating mode.
10. A water sampler as in claim 9, wherein: the balancing weight is a cylinder with the thickness of 2-3 cm, a through hole with the drift diameter larger than or equal to the diameter of the lower opening of the water sampler body is formed in the middle of the cylinder, and the outer diameter of the cylinder is smaller than or equal to the outer diameter of the lower protection ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726843.4U CN219495765U (en) | 2023-04-04 | 2023-04-04 | Water sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726843.4U CN219495765U (en) | 2023-04-04 | 2023-04-04 | Water sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219495765U true CN219495765U (en) | 2023-08-08 |
Family
ID=87475870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320726843.4U Active CN219495765U (en) | 2023-04-04 | 2023-04-04 | Water sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219495765U (en) |
-
2023
- 2023-04-04 CN CN202320726843.4U patent/CN219495765U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101924148B1 (en) | Stand for water and Sediment sampling | |
| CN203164014U (en) | Water sampler applicable to various water depths | |
| CN209606154U (en) | A kind of depth sampler | |
| CN201364253Y (en) | Multifunctional water sampler | |
| CN102218418A (en) | Sampling needle cleaning method and device | |
| CN218725601U (en) | Depth-fixed water taking device | |
| EP2682727A2 (en) | Leakage Detection Device Using Siphon Principle | |
| CN219495765U (en) | Water sampler | |
| CN203705204U (en) | Water quality sampler | |
| CN110018020A (en) | A kind of drilling underground water device for fetching water | |
| CN217277153U (en) | Sampling detection device for sewage treatment engineering | |
| CN103543037A (en) | Multifunctional grab bucket type water-sludge collector | |
| CN202676499U (en) | Analytical system for collecting water and measuring water sample density during tube element floating transport and sinking of immersed tube tunnel | |
| CN216116892U (en) | Sampling detection device applied to deep water source | |
| CN206787851U (en) | A kind of sewage harvester | |
| CN214794376U (en) | Bridge water seepage detection device for municipal bridge engineering | |
| CN211825157U (en) | Detection sample collector for water pollution detection | |
| CN208818303U (en) | Level measurement device | |
| CN210269269U (en) | Underwater petroleum sample collector | |
| CN109374357A (en) | A kind of sample collecting device for marine pollutant | |
| CN209727519U (en) | A kind of depthkeeping degree sampler | |
| CN112985902A (en) | Self-floating water quality sampling device and using method thereof | |
| CN2684179Y (en) | A novel single tube sampler for underwater deposits | |
| CN211576668U (en) | Fixed point sampling structure of groundwater | |
| CN214844165U (en) | Liquid fuel different depth liquid level sampler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |