CN212379081U - Combined sampler for collecting soil pore water of coastal wetland - Google Patents
Combined sampler for collecting soil pore water of coastal wetland Download PDFInfo
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- CN212379081U CN212379081U CN202020943272.6U CN202020943272U CN212379081U CN 212379081 U CN212379081 U CN 212379081U CN 202020943272 U CN202020943272 U CN 202020943272U CN 212379081 U CN212379081 U CN 212379081U
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Abstract
The utility model discloses a combined sampler for collecting the pore water of coastal wetland soil, which aims to solve the problems of difficult in-situ sampling of the pore water with different depths of the existing longitudinal section, and the like, wherein the combined sampler comprises a first water taking frame module, a second water taking frame module and a third water taking frame module which are connected in sequence, and the number of the second water taking frame module is at least 1; a plurality of water taking grooves are sequentially formed in the side surfaces of the first water taking rack module, the second water taking rack module and the third water taking rack module from top to bottom along the length direction of the first water taking rack module, the second water taking rack module and the third water taking rack module, collecting bottles are arranged in the water taking grooves, and bottle openings of the collecting bottles are sealed by adopting filter membranes; the top of first water intaking frame module is provided with prevents sinking the board, and after the combination sample thief inserted in soil, prevent that the sinking board cover sinks under the exogenic action on first water intaking frame module in order to prevent it. The scheme can realize multi-layer synchronous sampling, is convenient to combine and apply through modular design, and has the advantages of sinking prevention, accurate positioning and recovery and the like; and no cross contamination is ensured during sampling, the structural design is ingenious, and the economic and practical values are high.
Description
Technical Field
The utility model relates to a coastal tidal flat wetland pore water sampling field, concretely relates to gather coastal wetland soil pore water's combination sample thief.
Background
Nutritive salts (mainly comprising nitrate, nitrite, ammonium salt, phosphate, silicate and the like) in the coastal wetland soil or sediment pore water play an important supporting role in the growth of surface vegetation and water phytoplankton and are important macroelement sources which are indispensable for maintaining a wetland surface ecosystem and a soil microbial ecosystem. The nutrient salts at different depth positions of the longitudinal section of the soil not only relate to the exchange and flow of underground water, but also relate to the supporting effect on vegetation at different depth roots, and also relate to the penetration depth of surface water in the soil, chemical conversion and loss in the penetration process, nitrification and denitrification and other various biochemical processes, so that the nutrient salts are always difficult points and hot points in investigation and research.
However, unlike the direct sampling with water sampler in water, the soil and sediment are solid and have physical barrier effect, which makes it difficult to synchronously obtain non-polluted in-situ water samples of different depths in the longitudinal section of wetland sediment.
Generally, pore water obtained from different depths of the longitudinal section of the coastal wetland soil can be roughly divided into two types: one is destructive sampling, in which a soil or sediment sample is obtained by drilling or digging, and then the soil or sediment is directly subjected to centrifugal pressing or suction filtration, or is subjected to percolation by using a soil solution (pore water) sampler on site, although the sampling method can rapidly obtain a water sample on site, the method can damage the in-situ environment, so that the sample is polluted by artificial sampling, and the components of the pore water solution can be changed due to air pressure change, temperature change and exposure to air oxidation conditions; the other is in-situ undisturbed sampling, namely, a pipeline is buried at a certain depth, and sampling is carried out after a certain time, but at present, devices and equipment for carrying out in-situ sampling on the depth profile of coastal wetland soil and sediment are few; even if a separate in-situ sampling device is provided, the sampling depth and the number of synchronous sampling are less; and it is difficult to ensure that the sample is not polluted by external conditions, and it is also difficult to prevent cross contamination caused by streaming of samples at different depth levels.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem of the pore water in-situ sample difficulty of the different degree of depth of current longitudinal section, provide a gather coastal wetland soil pore water's combination sample thief, through the combination of three kinds of modules, adapt to the pore water sample of arbitrary degree of depth, structural design is ingenious, does not receive ambient temperature, pressure and the influence that the air component changes during the sampling, can effectively guarantee the precision of in-situ sample.
The utility model discloses an adopt following technical scheme to realize: a combined sampler for collecting soil pore water of a coastal wetland comprises a first water taking rack module, a second water taking rack module, a third water taking rack module and an anti-sinking plate, wherein the first water taking rack module, the second water taking rack module and the third water taking rack module are sequentially connected, and the number of the second water taking rack modules is at least 1; the first water taking frame module, the second water taking frame module and the third water taking frame module are all cylindrical structures, a plurality of water taking grooves are sequentially formed in the side surfaces of the first water taking frame module, the second water taking frame module and the third water taking frame module from top to bottom along the length direction of the first water taking frame module, collecting bottles are arranged in the water taking grooves, the height of each water taking groove is higher than that of each collecting bottle, and bottle openings of the collecting bottles are sealed by filter membranes;
the top of first water intaking frame module is provided with carries the hole, prevents sinking to be provided with the through-hole that matches with first water intaking frame module diameter on the board, after the combination sample thief inserts in soil, prevents sinking the board cover on first water intaking frame module to make the through-hole be located the top of preventing sinking the board, insert in the through-hole and support with the round pin axle, through the design of preventing sinking the board, effectively increased with the area of contact of soil, can effectively prevent to sink.
Furthermore, the bottom end of the first water taking frame module is provided with an internal thread; one end of the second water taking frame module is provided with an external thread matched with the internal thread at the bottom end of the first water taking frame module, and the other end of the second water taking frame module is provided with a connecting internal thread; the bottom of the third water taking frame module is provided with a pointed cone part, and the other end of the third water taking frame module is provided with an external thread matched with the internal thread connected with the second water taking frame module.
Furthermore, the top surface of the water taking tank is an inclined plane, namely, a slope is arranged above the bottle opening of the collecting bottle, and a clamping jaw used for fixing the collecting bottle is arranged on the side wall of the water taking tank.
Furthermore, a groove matched with the bottom of the collection bottle is formed in the bottom surface of the water taking groove.
Furthermore, the water taking grooves are uniformly arranged in a staggered mode in the longitudinal depth direction along the circumferential direction of the water taking frame, and at least one water taking groove is arranged at the same depth.
Further, first water intaking frame module, second water intaking frame module and third water intaking frame module are the solid cylinder structure that adopts the PC material to make, are provided with the water intaking groove of 3 at least levels in the second water intaking frame module.
Furthermore, first water intaking frame module, second water intaking frame module and third water intaking frame module are for adopting steel preparation hollow cylinder structure, and set up after the water intaking groove, and its inner space is a closed cavity, and is provided with the water intaking groove of 3 at least levels on the second water intaking frame module.
Furthermore, the distance between the centers of the upper and lower adjacent water taking tanks is 8cm-16 cm.
Further, for the convenience of searching, a sealing cavity is further formed in the top end of the first water taking frame module, a GPS positioning module and a power supply module of the GPS positioning module are arranged in the sealing cavity, and searching of the combined sampler is achieved by combining GPS positioning.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the section pore water combined sampler provided by the scheme adopts a modular structure design, can adapt to sampling requirements of different depths by increasing the number of second modules at will, is not influenced by external temperature, pressure and air component change after a water taking frame is inserted into wetland soil, and is driven into the soil by top pressure by using a mode of arranging a water sample collecting bottle in the water taking frame, and then the whole device is covered by the soil, so that the section pore water combined sampler has tightness, and cannot influence the sampling of the pore water of different heights of the section; during sampling, the air composition change cannot be influenced due to good tightness;
moreover, the scheme can realize multilayer synchronous sampling, the arrangement of the collecting bottles adopts a multilayer design, the multilayer sampling of the depth profile does not flow in series, and no cross contamination exists; the design of the sampling frame can isolate the water sample series flow between different depth layers, so that cross contamination is avoided, the samples obtained by each layer of the collecting bottles are ensured to be the pore water samples at the preset soil depth, and the anti-sinking plates are installed during arrangement so as to reduce the interference of the external environment, and the design of the GPS module is designed, so that the sampling device is convenient to position and recycle.
Drawings
Fig. 1 is a schematic diagram of a first structure of a combined sampler according to an embodiment of the present invention;
FIG. 2 is a schematic view of the combined sampler with the anti-sinking plate installed in the embodiment of the present invention;
fig. 3 is a schematic diagram of a second structure and a third structure of a combined sampler according to an embodiment of the present invention, in which (a) is a schematic diagram of the second structure and (b) is a schematic diagram of the third structure;
fig. 4 is a schematic view of the arrangement mode of the collection bottle in the water intake trough according to the embodiment of the present invention.
Detailed Description
In order to clearly understand the above objects, features and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.
The embodiment provides a combined sampler for collecting soil pore water of a coastal wetland, which comprises a first water taking rack module 1, a second water taking rack module 2 and a third water taking rack module 3 which are sequentially connected, wherein the number of the second water taking rack modules 2 is at least 1; the top end of the first water taking frame module 1 is also provided with an anti-sinking plate 6; first water intaking frame module 1, second water intaking frame module 2 and third water intaking frame module 3 are cylindrical structure, follow its length direction, have seted up a plurality of water intaking grooves 4 from last to down in proper order in its side, set up collection bottle 5 in the water intaking groove 4, water intaking groove 4 highly is higher than the height of collection bottle 5, the bottleneck of collection bottle 5 adopts the filter membrane to seal.
In addition, be provided with at the top of first water intaking frame module 1 and carry hole 11, be provided with the through-hole that matches with first water intaking frame module 1 diameter on the anti-heavy board 6, after the combination sample thief inserted soil, anti-heavy board 6 cover is on first water intaking frame module to make the through-hole be located the top of anti-heavy board 6, insert in the through-hole and support with round pin axle 7. Considering in the actual sampling process, the sample time may be longer, because changes such as environment, the sample thief has the risk of sinking, and the sample thief sinks the back and then can cause the interference to hole water sampling precision, in this embodiment, in order to prevent that the sample thief from appearing subsiding, through the area of contact of increase with soil, effectively prevent to sink.
In the embodiment, the first water taking frame module 1, the second water taking frame module 2 and the third water taking frame module 3 are connected in a threaded manner, so that the installation and the combination are convenient, and a single module is convenient to carry and use; the bottom end of the first water taking frame module 1 is provided with an internal thread; one end of the second water taking frame module 2 is provided with an external thread matched with the internal thread at the bottom end of the first water taking frame module 1, and the other end is provided with a connecting internal thread; the bottom of the third water taking frame module 3 is provided with a pointed cone part 31, the other end of the third water taking frame module is provided with an external thread which is connected with the second water taking frame module 2 and matched with the internal thread, the specifications of all the connecting threads are uniform, and the second water taking frame module 2 and other modules can be conveniently combined for use under the requirements of different levels.
Every 4 positions of water intaking groove can set up 2 ~ 3 collection bottles 5 (the figure and the size of collecting bottle 5 are confirmed as required), can see from figure 4, the top surface of water intaking groove 4 is the inclined plane, collect the bottleneck top of bottle and be a slope 41, can make soil pore water fill up gradually from this place and infiltrate in collecting the bottle, be provided with the jack catch 42 that is used for fixed collection bottle 5 on the lateral wall of water intaking groove 4, set up the recess 43 with the bottom matching of collecting bottle 5 on the bottom surface of water intaking groove 4, in order to further improve the fixed effect of collecting the bottle, 2 materials of collection bottle are high density polyethylene bottle, it is pollution-free to the water sample, and the detachable change after using at every turn, can adjust the capacity according to the science needs in a flexible way. The bottle mouth of the collecting bottle is sealed by adopting a Whatman GF/F glass fiber filter membrane (the aperture is 0.7 mu m), so that a water sample can be filtered in real time, the obtained water sample is ensured to be free from interference of sediments, soil particles and microorganisms, and the obtained water sample can be directly tested on a machine.
As shown in fig. 3, the water intake groove 4 is evenly staggered along the circumferential direction of the first water taking frame module 1, the second water taking frame module 2 and the third water taking frame module 3 in the longitudinal depth direction, and is provided with at least one water intake groove 4 in the same depth direction, of course, the water intake groove can be arranged on one side of the first water taking frame module 1, the second water taking frame module 2 and the third water taking frame module 3, so that the water intake accuracy of pore water is further ensured, and of course, other grooving modes can be adopted to arrange the collection bottles, so that the sampling of pore water in different longitudinal depths can be ensured.
Moreover, for the convenience of searching, a sealed cavity 8 is further arranged at the top end of the first water taking frame module 1, a GPS positioning module and a related power module thereof are arranged in the sealed cavity 8, the searching of the anti-sinking plate is realized by combining GPS positioning, the GPS positioning module can directly purchase and directly apply mature products, and the embodiment is not limited specifically.
In this embodiment, in order to ensure the collection and use effects, the first water taking rack module 1, the second water taking rack module 2 and the third water taking rack module 3 are made of solid cylinders made of Polycarbonate (PC) materials, or made of steel materials, and after the water taking tank 4 is provided, the inner space thereof is a closed cavity, the second water taking rack module 2 is provided with at least 3 levels of water taking tanks 4, and the distance between the centers of the upper and lower adjacent water taking tanks 4 is 8cm-16 cm; according to actual requirements, the size and the like of the water taking frame 1 can be specifically designed, for example, the diameter of the first water taking frame module 1, the diameter of the second water taking frame module 2 and the diameter of the third water taking frame module 3 are designed to be 10cm, the length of the first water taking frame module is 65cm, and the length of a pointed cone part at the bottom end of the water taking frame is about 15 cm; the interlamellar spacing of collection bottle place can be adjusted according to the scientific needs are nimble, and the preferred 10cm of this embodiment, every 10cm excavates the water intaking groove and lays the collection bottle from top to bottom.
When the device is used, the cylindrical first water taking frame module 1, the cylindrical second water taking frame module 2 and the cylindrical third water taking frame module 3 are combined and then pressed into wetland soil, so that about 5cm is reserved on the surface of the wetland, the bottle mouth position of the collecting bottle is required to be consistent with the section depth, and the collecting bottle is arranged at a preset depth; after the collection bottle is placed for a period of time, the water taking frame can be taken out after pore water permeates into the collection bottle.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The combined sampler for collecting the soil pore water of the coastal wetland is characterized by comprising a first water taking rack module (1), a second water taking rack module (2), a third water taking rack module (3) and an anti-sinking plate (6), wherein the first water taking rack module (1), the second water taking rack module (2) and the third water taking rack module (3) are sequentially connected, and the number of the second water taking rack modules (2) is at least 1; the first water taking rack module (1), the second water taking rack module (2) and the third water taking rack module (3) are all cylindrical structures, a plurality of water taking grooves (4) are sequentially formed in the side surfaces of the first water taking rack module, along the length direction of the first water taking rack module, from top to bottom, the water taking grooves (4) are internally provided with collecting bottles (5), the height of each water taking groove (4) is higher than that of each collecting bottle (5), and bottle openings of the collecting bottles (5) are sealed by adopting filter membranes;
the top of first water intaking frame module (1) is provided with carries hole (11), prevents sinking to be provided with on board (6) with the through-hole that first water intaking frame module (1) diameter matches, after the combination sample thief inserted in soil, prevents sinking board (6) cover on first water intaking frame module to make the through-hole be located the top of preventing sinking board (6), insert in the through-hole and support with round pin axle (7).
2. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the bottom end of the first water taking frame module (1) is provided with an internal thread; one end of the second water taking frame module (2) is provided with an external thread matched with the internal thread at the bottom end of the first water taking frame module (1), and the other end of the second water taking frame module is provided with a connecting internal thread; the bottom end of the third water taking frame module (3) is provided with a pointed cone part (31), and the other end of the third water taking frame module is provided with an external thread which is connected with the second water taking frame module (2) and matched with the internal thread.
3. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the top surface of the water taking tank (4) is an inclined surface, namely a slope (41) is arranged above the bottle mouth of the collection bottle, and a clamping jaw (42) for fixing the collection bottle (5) is arranged on the side wall of the water taking tank (4).
4. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 3, characterized in that: the bottom surface of the water taking groove (4) is provided with a groove (43) matched with the bottom of the collecting bottle (5).
5. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the water taking tank (4) is uniformly arranged in a staggered mode in the longitudinal depth direction along the circumferential direction of the first water taking frame module (1), the second water taking frame module (2) and the third water taking frame module (3), and at least one water taking tank (4) is arranged at the same depth.
6. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the first water taking frame module (1), the second water taking frame module (2) and the third water taking frame module (3) are of solid cylindrical structures made of PC materials, and the second water taking frame module (2) is provided with at least 3 levels of water taking grooves (4).
7. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: first water intaking frame module (1), second water intaking frame module (2) and third water intaking frame module (3) are for adopting the hollow cylinder structure of steel material preparation, and set up after taking water tank (4), and its inner space is a closed cavity, is provided with the taking water tank (4) of 3 at least levels on the second water intaking frame module (2).
8. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the distance between the centers of the upper and lower adjacent water taking tanks (4) is 8cm-16 cm.
9. The combined sampler for collecting the pore water of the coastal wetland soil according to claim 1, is characterized in that: the top end of the first water taking frame module (1) is also provided with a sealed cavity (8), and a GPS positioning module and a power supply module thereof are arranged in the sealed cavity (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943272.6U CN212379081U (en) | 2020-05-29 | 2020-05-29 | Combined sampler for collecting soil pore water of coastal wetland |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020943272.6U CN212379081U (en) | 2020-05-29 | 2020-05-29 | Combined sampler for collecting soil pore water of coastal wetland |
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| CN212379081U true CN212379081U (en) | 2021-01-19 |
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| CN202020943272.6U Active CN212379081U (en) | 2020-05-29 | 2020-05-29 | Combined sampler for collecting soil pore water of coastal wetland |
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