Synchronous sampling device for surface runoff and underground seepage

Abstract

The utility model relates to the technical field of water sample collection, in particular to a surface runoff and underground seepage synchronous sampling device. The structure is simple and reasonable, surface runoff and underground seepage can be synchronously sampled at a time, and the sampling efficiency of a water sample in soil is improved; comprising a vertical channel, a runoff sampling box and a seepage sampling box, the runoff sampling box and the seepage sampling box are located on the two sides of the vertical channel, the bottom of the runoff sampling box is higher than the top of the seepage sampling box, the top of the runoff sampling box is flush with the ground, and filtering pieces are arranged on the top of the runoff sampling box and the upper portion and the top of the periphery of the seepage sampling box; two sampling pipes are mounted in the vertical channel and extend into the inner bottoms of the runoff sampling box and the seepage sampling box respectively; a piston capable of sliding up and down along the inner wall of the vertical channel is arranged in the vertical channel, a first communication port communicated with the interior of the vertical channel is formed in the bottom of one side, close to the vertical channel, of the seepage sampling box, and a second communication port communicated with the interior of the vertical channel is formed in the bottom of one side, close to the vertical channel, of the runoff sampling box.

Description

Technical Field

[0001] The utility model relates to the technical field of water sample collection, in particular to a synchronous sampling device for surface runoff and underground seepage. Background Art

[0002] As we all know, generally speaking, the process of monitoring and analyzing the utilization rate of fertilizers in farmland and environmental pollution requires quantitative calculation of the content of fertilizers, pesticides and heavy metals lost with water in order to calculate the fertilizer loss rate or heavy metal output content; therefore, it is necessary to sample and measure water samples in farmland for analysis.

[0003] For example, a Chinese utility model patent discloses a seepage in-situ sampler (publication (announcement) number CN204422258U). The adopted technical solution is: it consists of an upper cover, a main body, a water level sensor and an electronic alarm device; the upper cover is provided with a sampling hole and a plurality of seepage holes, and a plugging cover I is provided on the sampling hole; the water level sensor is placed in the main body, and the electronic alarm device is connected to the water level sensor. The main body is composed of a sample inlet area and a sample storage area to form an L-shaped inner cavity connected, and the upper cover is fixed to the main body in the sample inlet area. The end face of the sample inlet area is made into an inclined surface. A positioning hole is provided on the upper cover, and a positioning ruler is placed in the positioning hole with one end extending into the bottom of the sample storage area. The water level sensor is fixed to the positioning ruler, and a plugging cover II is provided on the positioning hole. Its structure is simple and reasonable, easy to operate, and can obtain scientific research data in a timely manner.

[0004] However, when the inventors implemented this device, they found the following defects: it can only sample underground seepage in farmland soil; it is also necessary to sample surface runoff separately, and the convenience and synchronization of water sampling need to be further improved. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a synchronous sampling device for surface runoff and underground seepage which has a simple and reasonable structure and can realize synchronous sampling of surface runoff and underground seepage in a single time, thereby improving the sampling efficiency of water samples in soil.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a synchronous sampling device for surface runoff and underground seepage, comprising a vertical channel and a runoff sampling box and a seepage sampling box located on both sides of the vertical channel, the bottom of the runoff sampling box is higher than the top of the seepage sampling box, the top of the runoff sampling box is flush with the ground, the top of the runoff sampling box and the upper parts and top of the seepage sampling box are provided with filters, two sampling tubes are installed in the vertical channel, and the two sampling tubes extend into the bottom of the runoff sampling box and the seepage sampling box respectively; further, the filter is preferably a filter plate with holes, and a filter mesh with a certain structural strength can also be used.

[0009] Preferably, a piston that can slide up and down along the inner wall of the vertical channel is provided in the vertical channel, a first connecting port communicating with the interior of the vertical channel is provided at the bottom of the seepage sampling box on one side adjacent to the vertical channel, and a second connecting port communicating with the interior of the vertical channel is provided at the bottom of the runoff sampling box on one side adjacent to the vertical channel; a sealing plate is installed at the top of the second connecting port in the vertical channel, and a driving rod for driving the piston to move up and down is fixedly installed on the top of the piston; further, the driving rod is preferably a U-shaped rod; and the piston is located between the first connecting port and the second connecting port.

[0010] Preferably, the two sampling tubes are respectively located on one side of the runoff sampling box and the seepage sampling box adjacent to the vertical channel, and the inner bottom wall of the runoff sampling box and the inner bottom wall of the seepage sampling box are both inclined toward the corresponding sampling tubes.

[0011] Preferably, the upper portion of the vertical channel is at least 50 cm higher than the top of the runoff sampling box.

[0012] Preferably, the upper portion of the vertical channel is covered with a cover.

[0013] Preferably, liquid level sensors are installed on the upper parts of the inner walls of the runoff sampling box and the seepage sampling box.

[0014] Preferably, the runoff sampling box and the seepage sampling box are both installed with load-bearing columns for supporting the filter element.

[0015] Preferably, when the piston moves to the extreme position at the bottom of the vertical channel, the piston completely blocks the first connecting port; and the bottom of the blocking plate is flush with the upper portion of the inner wall of the second connecting port.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a synchronous sampling device for surface runoff and underground seepage, which has the following beneficial effects: in the synchronous sampling device for surface runoff and underground seepage, surface water flows directly into the runoff sampling box through the top filter of the runoff sampling box, while water infiltrating into the soil is injected into the seepage sampling box through the filter elements on the upper part and the top around the seepage sampling box, and water samples in the runoff sampling box and the seepage sampling box are sampled independently through two sampling tubes, and the two do not interfere with each other, and the structure is simple and reasonable. The synchronous sampling of surface runoff and underground seepage can be achieved in a single time, thereby improving the sampling efficiency and convenience of water samples in the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the top plan structure of the utility model;

[0020] Figure 3 The utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0021] Markings in the attached drawings: 1. vertical channel; 2. runoff sampling box; 3. seepage sampling box; 4. filter element; 5. sampling tube; 6. piston; 7. first connecting port; 8. second connecting port; 9. sealing plate; 10. driving rod; 11. sealing cover; 12. liquid level sensor; 13. load-bearing column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3The utility model discloses a synchronous sampling device for surface runoff and underground seepage, comprising a vertical channel 1 and a runoff sampling box 2 and a seepage sampling box 3 located on both sides of the vertical channel 1, the bottom of the runoff sampling box 2 is higher than the top of the seepage sampling box 3, the top of the runoff sampling box 2 is flush with the ground, the top of the runoff sampling box 2 and the upper parts of the four sides and the top of the seepage sampling box 3 are all provided with a filter 4, two sampling tubes 5 are installed in the vertical channel 1, and the two sampling tubes 5 extend into the bottom of the runoff sampling box 2 and the seepage sampling box 3 respectively; further, the filter 4 is preferably a perforated filter plate, the perforated filter plate has a large structural strength and a stronger load-bearing capacity; a filter net with a certain structural strength can also be used; the filter 4 is arranged on the top and the upper parts of the four sides of the seepage sampling box 3, so as to realize comprehensive filtering and collection of seepage in the soil, improve the sampling accuracy of seepage, and avoid sampling only the seepage water sample on the upper part of the seepage sampling box 3.

[0024] Specifically, a piston 6 that can slide up and down along the inner wall of the vertical channel 1 is provided in the vertical channel 1, a first connecting port 7 communicating with the interior of the vertical channel 1 is provided at the bottom of the seepage sampling box 3 near the vertical channel 1, and a second connecting port 8 communicating with the interior of the vertical channel 1 is provided at the bottom of the runoff sampling box 2 near the vertical channel 1; a sealing plate 9 is installed at the top of the second connecting port 8 near the vertical channel 1, and a driving rod 10 for driving the piston 6 to move up and down is fixedly installed on the top of the piston 6; further, the driving rod 10 is preferably a U-shaped rod; the piston 6 is located between the first connecting port 7 and the second connecting port 8, and the driving rod 10 is connected to the sealing plate 9 by a sliding seal such as a filler or a sealing ring; after the water sample flows into the runoff sampling box 2 or the seepage sampling box 3, the soil in the water sample settles, and when the water sample is extracted through the sampling tube 5, this part of the soil is difficult to be sucked out, which not only affects the accuracy of the water sampling result, but also causes contamination at the bottom of the runoff sampling box 2 or the seepage sampling box 3. If there is excessive sedimentation of mud, the sampling device needs to be dug out and cleaned; by pulling and pushing the driving rod 10 up and down, the driving rod 10 drives the piston 6 to move up and down along the inner wall of the vertical channel 1. When the piston 6 moves upward from the bottom of the vertical channel 1, the water in the seepage sampling box 3 flows into the vertical channel 1 through the first connecting port 7, and the water on the upper part of the piston 6 that flows into the vertical channel 1 through the second connecting port 8 is pressed into the runoff sampling box 2 again, and enters the runoff sampling box 2. The water flow forms a water impact on the bottom of the runoff sampling box 2, thereby causing the soil settled in the runoff sampling box 2 to flow and dissolve in the water sample. Similarly, when the piston 6 moves downward, the water at the bottom of the vertical channel 1 is pressed into the seepage sampling box 3 by the piston 6. The water in the seepage sampling box 3 and the runoff sampling box 2 are both in a flowing state, thereby causing the settled soil to fully dissolve in the water sample, effectively reducing the settlement of soil in the seepage sampling box 3 or the runoff sampling box 2 and improving the accuracy of the sampled water.

[0025] Specifically, the two sampling tubes 5 are respectively located on one side of the runoff sampling box 2 and the seepage sampling box 3 adjacent to the vertical channel 1, and the inner bottom walls of the runoff sampling box 2 and the seepage sampling box 3 are both inclined toward the corresponding sampling tubes 5; through the above arrangement, the water at the bottom of the runoff sampling box 2 and the seepage sampling box 3 can be prompted to flow toward the sampling tubes 5, and at the same time, when the piston 6 moves up and down in the vertical channel 1, the water in the runoff sampling box 2 and the seepage sampling box 3 can be prompted to flow toward the vertical channel 1, so as to improve the fluidity of the water samples in the runoff sampling box 2 and the seepage sampling box 3.

[0026] Specifically, the upper part of the vertical channel 1 is at least 50 cm higher than the top of the runoff sampling box 2; the upper part of the vertical channel 1 is covered with a cover 11; the water flow depth of the runoff is generally less than 50 cm, and the vertical channel 1 is 50 cm higher than the top of the runoff sampling box 2 (ground level), which can effectively prevent surface runoff from flowing into the vertical channel 1; and the cover 11 can block the falling rainwater or other debris, and effectively seal the top of the vertical channel 1.

[0027] Specifically, liquid level sensors 12 are installed on the upper inner walls of the runoff sampling box 2 and the seepage sampling box 3; the liquid level sensor 12 can perform real-time detection of the liquid levels in the runoff sampling box 2 and the seepage sampling box 3. When the water level reaches the sampling height, the liquid level sensor 12 can transmit a signal to the experimenter to remind the experimenter to sample the water in time.

[0028] Specifically, the runoff sampling box 2 and the seepage sampling box 3 are both installed with load-bearing columns 13 for supporting the filter element 4; supporting the filter element 4 by the load-bearing columns 13 can further improve the load-bearing capacity of the filter element 4 to ensure that the device is not damaged during use.

[0029] Specifically, when the piston 6 moves to the extreme position at the bottom of the vertical channel 1, the piston 6 completely blocks the first connecting port 7; the bottom of the sealing plate 9 is flush with the upper inner wall of the second connecting port 8; when the piston 6 moves to the lower part of the vertical channel 1, the piston 6 can completely press the water in the vertical channel 1 into the seepage sampling box 3, and when the piston 6 moves to the upper part of the vertical channel 1 and contacts the bottom of the sealing plate 9, the water between the piston 6 and the sealing plate 9 is completely pressed into the runoff sampling box 2, thereby preventing the water sample from remaining in the vertical channel 1.

[0030] When in use, the surface runoff is sampled through the runoff sampling box 2, and the underground seepage is sampled through the seepage sampling box 3. By pushing and pulling the driving rod 10 up and down, the piston 6 is moved up and down along the inner wall of the vertical channel 1, thereby causing the water samples in the runoff sampling box 2 and the seepage sampling box 3 to be in a flowing state, so that the soil in the water sample is fully dissolved in the water sample. When the water sample in the runoff sampling box 2 needs to be extracted, the piston 6 contacts the bottom of the sealing plate 9. When the water sample in the seepage sampling box 3 needs to be extracted, the piston 6 is located at the bottom of the vertical channel 1, and the sampling tube 5 is externally connected to a water pump to extract the water samples in the runoff sampling box 2 and the seepage sampling box 3.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A synchronous sampling device for surface runoff and underground seepage, characterized in that: The invention comprises a vertical channel (1) and a runoff sampling box (2) and a seepage sampling box (3) located on both sides of the vertical channel (1); the bottom of the runoff sampling box (2) is higher than the top of the seepage sampling box (3); the top of the runoff sampling box (2) is flush with the ground; the top of the runoff sampling box (2) and the upper parts of the periphery and the top of the seepage sampling box (3) are provided with filter elements (4); two sampling tubes (5) are installed in the vertical channel (1); the two sampling tubes (5) extend into the bottom of the runoff sampling box (2) and the bottom of the seepage sampling box (3), respectively.

2. The synchronous sampling device for surface runoff and underground seepage according to claim 1, characterized in that: A piston (6) is provided in the vertical channel (1) and can slide up and down along the inner wall of the vertical channel (1); a first communication port (7) communicating with the interior of the vertical channel (1) is provided at the bottom of the seepage sampling box (3) on the side adjacent to the vertical channel (1); a second communication port (8) communicating with the interior of the vertical channel (1) is provided at the bottom of the runoff sampling box (2) on the side adjacent to the vertical channel (1); a blocking plate (9) is installed at the top of the second communication port (8) in the vertical channel (1); and a driving rod (10) for driving the piston (6) to move up and down is fixedly installed on the top of the piston (6).

3. The synchronous sampling device for surface runoff and underground seepage according to claim 2, characterized in that: The two sampling tubes (5) are respectively located on one side of the runoff sampling box (2) and the seepage sampling box (3) adjacent to the vertical channel (1), and the inner bottom wall of the runoff sampling box (2) and the inner bottom wall of the seepage sampling box (3) are both arranged inclined toward the corresponding sampling tubes (5).

4. The synchronous sampling device for surface runoff and underground seepage according to claim 1, characterized in that: The upper part of the vertical channel (1) is at least 50 cm higher than the top of the runoff sampling box (2).

5. The synchronous sampling device for surface runoff and underground seepage according to claim 4, characterized in that: The upper part of the vertical channel (1) is covered with a cover (11).

6. The synchronous sampling device for surface runoff and underground seepage according to claim 1, characterized in that: Liquid level sensors (12) are installed on the upper parts of the inner walls of the runoff sampling box (2) and the seepage sampling box (3).

7. The synchronous sampling device for surface runoff and underground seepage according to claim 1, characterized in that: The runoff sampling box (2) and the seepage sampling box (3) are both installed with a load-bearing column (13) for supporting the filter element (4).

8. The synchronous sampling device for surface runoff and underground seepage according to claim 2, characterized in that: When the piston (6) moves to the extreme position at the bottom of the vertical channel (1), the piston (6) completely blocks the first connecting port (7); the bottom of the blocking plate (9) is flush with the upper part of the inner wall of the second connecting port (8).

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