Layered sampling and collecting device for in-situ soil leaching water

Abstract

The utility model discloses a stratified sampling and collecting device for in-situ soil leaching water, and particularly relates to the field of soil leaching water sampling, the stratified sampling and collecting device comprises a solution collector and a vacuum pump, the bottom of the solution collector is connected with a connecting sleeve, and the bottom of the connecting sleeve is provided with a solution conduit; installation buckles are evenly fixed to the top of the inner side wall of the solution collector, and an air ring pipe is installed between the installation buckles. According to the utility model, the plurality of solution collectors are arranged, the solution collectors are buried in soil bodies with different depths, the structure of each solution collector is smaller, the damage to soil is smaller, in addition, the air ring pipes are arranged at the top ends in the solution collectors, and the air ring pipes are connected with the splicing type air inlet pipes through the connecting pieces, so that the solution collectors are more uniform in distribution. The top of the spliced air inlet pipe extends out of the soil, so that the internal air pressure of the solution collector is consistent with the external air pressure, and the subsequent leaching water suction is more convenient and energy-saving.

Description

Technical Field

[0001] The utility model relates to the field of soil leaching water sampling, and more specifically, to a layered sampling and collection device for in-situ soil leaching water. Background Art

[0002] Soil is a basic element of the terrestrial ecosystem and also the material basis for human survival. The soil environmental condition is directly related to ecological security and agricultural product safety. Soil solution is the general term for water and its solutes in the soil, mainly including inorganic ions, organic ions, polymeric ions, etc. The soil solution is in close contact with the solid phase part and maintains a dynamic balance with the solid phase surface. Under the conditions of irrigation and rainfall infiltration for a period of time, the study of the change process of the solute composition and concentration in the soil solution has a guiding role in agricultural irrigation and drainage, pollution control, and land condition improvement;

[0003] After retrieval, the existing patent (publication number: CN210665734U) discloses an in-situ layered collection device for field soil leaching in experiments, including a tube body. Inside the tube body, a sampling tube at a soil layer of 40 cm, a sampling tube at a soil layer of 60 cm, and a sampling tube at a soil layer of 80 cm are successively arranged. A plurality of leaching water collection tubes are respectively arranged on the outer side of the tube body. The leaching water collection tubes respectively correspond to the sampling tube at a soil layer of 40 cm, the sampling tube at a soil layer of 60 cm, and the sampling tube at a soil layer of 80 cm. The leaching water collection tubes are in a horizontal state and the directions of the leaching water collection tubes at different soil layers are different. Compared with the prior art, the advantages of the utility model are as follows: The leaching tubes can at least collect the leaching solutions of multiple soil layers at the same site simultaneously, reducing the test error to a certain extent; The horizontal setting of the liquid collection tubes can collect the leaching solutions vertically generated above the soil layer in the largest amount; The change in the orientation of the horizontal liquid collection tubes at different soil layers reduces the influence of the upper liquid collection tube on the lower liquid collection tube to a certain extent.

[0004] The existing soil leaching water collection device usually occupies a large space, has a large destructive effect on the original soil structure, and when collecting soil leaching water, it is usually necessary to use a suction pump to suck the leaching water in the leaching water collection tube. When sucking, the air pressure in the collection tube is relatively low, and the suction is relatively difficult; At the same time, the above-cited patent document does not propose relevant solutions to solve the above problems;

[0005] Therefore, in view of the above problems, a layered sampling and collection device for in-situ soil leaching water is proposed. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a layered sampling and collection device for in-situ soil leaching water to solve the problems raised in the above background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stratified sampling and collecting device for in-situ soil leaching water, comprising a solution collector and a vacuum pump, the bottom of the solution collector is connected to a connecting sleeve, and the bottom of the connecting sleeve is installed with a solution conduit, the top of the inner wall of the solution collector is evenly fixed with mounting buckles, and an air ring tube is installed between the mounting buckles, the inner side of the air ring tube is evenly opened with air holes, and the side wall of the solution collector near the air ring tube is penetrated by a connecting piece, one end of the connecting piece is connected to the air inlet end of the air ring tube, and the other end of the connecting piece is equipped with a spliced ​​air inlet pipe, and the top of the spliced ​​air inlet pipe is installed with a rain cap;

[0008] A connecting pipe is threadedly installed at the exhaust end of the vacuum pump, and collecting bottles are evenly arranged below the connecting pipe. Sealing plugs are arranged on the tops of the collecting bottles. Branch pipes are evenly arranged at the bottom of the connecting pipe, and the bottoms of the branch pipes pass through the sealing plugs. The sealing plugs on one side of the branch pipes are penetrated by solution conduits.

[0009] Preferably, a mounting sleeve is integrally provided at the central position inside the rain cap, and the mounting sleeve is threadedly connected to the top of the spliced ​​air inlet pipe, and air inlets are evenly opened on the side walls of the mounting sleeve.

[0010] Preferably, the connector includes a bent pipe, a threaded connector and a sealing rotary sleeve, and the bent pipe and the threaded connector are rotatably connected via the sealing rotary sleeve, and the connector is threadedly connected to the air inlet end of the air ring pipe via the threaded connector.

[0011] Preferably, a screen is installed at a central position inside the solution collector, gauze is laid on the top of the screen, and a quartz sand layer is laid on the top of the gauze.

[0012] Preferably, the solution collector is designed in a conical funnel shape, and the bottom of the solution collector is threadedly connected to the connecting sleeve, and the bottom of the connecting sleeve is threadedly connected to the solution conduit.

[0013] Preferably, a plurality of the solution collectors and the collecting bottles are provided, and the solution collectors are buried in the soil at different depths in a stepped manner, and the solution collectors correspond to the collecting bottles one by one.

[0014] Preferably, the sealing plugs are all designed in a truncated cone shape with a thick top and a thin bottom, and the branch tube and the solution conduit are both plugged into the sealing plugs, the bottom of the solution conduit extends to the bottom end inside the collecting bottle, and the bottom of the branch tube is flush with the bottleneck of the collecting bottle.

[0015] Technical effects and advantages of the present utility model: Compared with the prior art, the layered sampling and collection device for in-situ soil leachate is provided with a plurality of solution collectors buried in soil bodies at different depths. The structure of the solution collector is small, and the damage to the soil is small. In addition, air ring pipes are arranged at the tops inside the solution collectors, and the air ring pipes are connected to the spliced air inlet pipes through connectors. The tops of the spliced air inlet pipes extend out of the soil, which can make the air pressure inside the solution collectors consistent with the external air pressure, making it more convenient and energy-saving to aspirate the leachate subsequently. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the solution collector of the present utility model.

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the collection bottle of the present utility model.

[0019] Figure 4 It is a schematic structural diagram of the spliced air inlet pipe of the present utility model.

[0020] Reference numerals are: 1, vacuum pump; 2, connecting pipe; 201, branch pipe; 3, collection bottle; 4, solution conduit; 5, rainproof cap; 6, spliced air inlet pipe; 7, mounting sleeve; 701, air inlet; 8, air ring pipe; 801, air hole; 9, solution collector; 10, quartz sand layer; 11, gauze; 12, mounting buckle; 13, screen; 14, connector; 1401, elbow; 1402, threaded connector; 1403, sealing rotating sleeve; 15, connecting sleeve; 16, sealing plug. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] As shown in the attached Figure 1A stratified sampling and collecting device for in-situ soil leaching water shown in the figure comprises a solution collector 9 and a vacuum pump 1, the bottom of the solution collector 9 is connected with a connecting sleeve 15, and the bottom of the connecting sleeve 15 is installed with a solution conduit 4, the top of the inner wall of the solution collector 9 is evenly fixed with mounting buckles 12, and an air ring tube 8 is installed between the mounting buckles 12, and air holes 801 are evenly opened on the inner side of the air ring tube 8, and a connecting piece 14 is penetrated at a position near the air ring tube 8 on the side wall of the solution collector 9, one end of the connecting piece 14 is connected to the air inlet end of the air ring tube 8, and the other end of the connecting piece 14 is equipped with a spliced ​​air inlet pipe 6, and a rain cap 5 is installed on the top of the spliced ​​air inlet pipe 6;

[0024] A connecting tube 2 is threadedly installed at the exhaust end of the vacuum pump 1, and collecting bottles 3 are evenly arranged below the connecting tube 2. Sealing plugs 16 are arranged on the tops of the collecting bottles 3. Branch pipes 201 are evenly arranged at the bottom of the connecting tube 2, and the bottoms of the branch pipes 201 pass through the sealing plugs 16. The sealing plugs 16 on one side of the branch pipes 201 are penetrated by solution conduits 4.

[0025] Among them: the air ring pipe 8 is connected to the spliced ​​air inlet pipe 6 through the connecting piece 14, and the top of the spliced ​​air inlet pipe 6 extends out of the soil, so that the internal air pressure of the solution collector 9 can be consistent with the external air pressure, which is more convenient and energy-saving when the leaching water is sucked later.

[0026] Embodiment 2

[0027] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 4 As shown, see the following description for details:

[0028] As a preferred embodiment, a mounting sleeve 7 is integrally provided at the central position inside the rain cap 5, and the mounting sleeve 7 is threadedly connected to the top of the spliced ​​air inlet pipe 6, and air inlets 701 are evenly opened on the side walls of the mounting sleeve 7; further, the design of the rain cap 5 can prevent rainwater from directly entering the solution collector 9 through the spliced ​​air inlet pipe 6, and the design is more reasonable.

[0029] As a preferred embodiment, the connecting piece 14 includes a bent pipe 1401, a threaded connector 1402 and a sealing rotating sleeve 1403, and the bent pipe 1401 and the threaded connector 1402 are both rotationally connected via the sealing rotating sleeve 1403, and the connecting piece 14 is threadedly connected to the air inlet end of the air ring pipe 8 via the threaded connector 1402; further, the rotating connection design makes it easier for the threaded connector 1402 to be threadedly connected to the air ring pipe 8, and after assembly, the spliced ​​air inlet pipe 6 connected to the bent pipe 1401 can still maintain a vertical state, and the design is more reasonable.

[0030] As a preferred embodiment, a screen 13 is installed at the central position inside the solution collector 9. A gauze 11 is laid on the top of the screen 13, and a quartz sand layer 10 is laid on the top of the gauze 11. Further, the screen 13, the gauze 11 and the quartz sand layer 10 can filter the leaching water to prevent soil particles from entering the solution conduit 4 along with the leaching water, and the design is more reasonable.

[0031] As a preferred embodiment, the solution collector 9 is designed in the shape of a conical funnel, and the bottom of the solution collector 9 is threadedly connected to the connecting sleeve 15, and the bottom of the connecting sleeve 15 is threadedly connected to the solution conduit 4. Further, the conical funnel design has a better effect on collecting the leaching water, and the threaded connection design is more convenient and fast for disassembly and assembly.

[0032] As a preferred embodiment, a plurality of solution collectors 9 and collection bottles 3 are provided, and the solution collectors 9 are buried in the soil at different depths in a stepped manner, and the solution collectors 9 correspond to the collection bottles 3 one by one. Further, the solution collectors 9 are buried in the soil at different depths, and their structures are small, resulting in less damage to the soil.

[0033] As a preferred embodiment, the sealing plugs 16 are all designed in the shape of a frustum of a cone with a thicker upper part and a thinner lower part, and the branch pipe 201 and the solution conduit 4 are both inserted into the sealing plugs 16. The bottom of the solution conduit 4 extends to the bottom end inside the collection bottle 3, and the bottom of the branch pipe 201 is flush with the bottleneck of the collection bottle 3. Further, the frustum-of-a-cone design with a thicker upper part and a thinner lower part makes it difficult for the sealing plug 16 to fall into the collection bottle 3 when it is tightly plugged with the collection bottle 3, and the design is more reasonable.

[0034] The working process of the present utility model is as follows:

[0035] During use, the vacuum pump 1 operates, reducing the air pressure in the collection bottle 3 through the connecting pipe 2, further reducing the air pressure in the solution conduit 4. The leaching water collected in the solution collector 9 can enter the collection bottle 3 through the solution conduit 4 under the action of the pressure difference to complete the collection. When collecting, the outside air enters the spliced air inlet pipe 6, is introduced into the air ring pipe 8 through the connecting member 14, and enters the collection bottle 3 through the air holes 801, so that the air pressure inside the solution collector 9 is consistent with the outside air pressure.

[0036] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A layered sampling and collection device for in-situ soil leachate, comprising a solution collector (9) and a vacuum pump (1), characterized in that: A connecting sleeve (15) is connected to the bottom of each of the solution collectors (9), and a solution conduit (4) is installed at the bottom of each connecting sleeve (15). At the top of the inner side wall of the solution collector (9), mounting buckles (12) are uniformly fixed, and an air manifold (8) is installed between the mounting buckles (12). Uniform air holes (801) are provided inside the air manifold (8), and connectors (14) penetrate through the side walls of the solution collector (9) near the air manifold (8). One end of each connector (14) is connected to the air inlet end of the air manifold (8), and a spliced air inlet pipe (6) is assembled at the other end of each connector (14). A rain cap (5) is installed at the top of the spliced air inlet pipe (6). A connecting pipe (2) is installed at the air extraction end of the vacuum pump (1) by means of threading, and collecting bottles (3) are uniformly arranged below the connecting pipe (2). Sealing plugs (16) are provided at the tops of the collecting bottles (3). Branch pipes (201) are uniformly arranged at the bottom of the connecting pipe (2), and the bottoms of the branch pipes (201) penetrate through the sealing plugs (16). Solution conduits (4) penetrate through the sealing plugs (16) on one side of the branch pipes (201).

2. The layered sampling and collection device for in-situ soil leachate water according to claim 1, wherein: An installation sleeve (7) is integrally provided at the central position inside the rain cap (5), and the installation sleeve (7) is threadedly connected to the top of the spliced air inlet pipe (6). Air inlets (701) are uniformly provided on the side wall of the installation sleeve (7).

3. The layered sampling and collection device for in-situ soil leachate water according to claim 1, characterized in that: The connector (14) includes an elbow pipe (1401), a threaded connection head (1402), and a sealing rotary sleeve (1403). A rotary connection is formed between the elbow pipe (1401) and the threaded connection head (1402) through the sealing rotary sleeve (1403). The connectors (14) are threadedly connected to the air inlet ends of the air manifolds (8) through the threaded connection heads (1402).

4. A layered sampling and collection device for in-situ soil leachate water according to claim 1, characterized in that: A sieve mesh (13) is installed at the central position inside each solution collector (9). A gauze (11) is laid on the top of the sieve mesh (13), and a quartz sand layer (10) is laid on the top of the gauze (11).

5. A layered sampling and collection device for in-situ soil leachate water according to claim 1, characterized in that: The solution collector (9) is designed in the shape of a conical funnel, and the bottom of the solution collector (9) is threadedly connected to the connecting sleeve (15). The bottom of the connecting sleeve (15) is threadedly connected to the solution conduit (4).

6. The layered sampling and collection device for in-situ soil leachate water according to claim 1, characterized in that: A plurality of solution collectors (9) and collecting bottles (3) are provided. The solution collectors (9) are buried in soil at different depths in a stepped manner, and the solution collectors (9) correspond to the collecting bottles (3) one by one.

7. A layered sampling and collection device for in-situ soil leachate according to claim 1, characterized in that: The sealing plugs (16) are all designed in the shape of a frustum of a cone with a thick upper part and a thin lower part. The branch pipes (201) and the solution conduits (4) are inserted into the sealing plugs (16). The bottoms of the solution conduits (4) extend to the bottom end inside the collecting bottles (3), and the bottoms of the branch pipes (201) are flush with the bottlenecks of the collecting bottles (3).

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