Leaching simulation device for uniform leaching column

Abstract

The utility model relates to the field of environmental science and soil science research, in particular to a uniform leaching column leaching simulation device, which comprises a leaching column and a water storage container positioned above the leaching column, the top of the leaching column is connected with a uniform cover, and a plurality of rain inlet pinholes are uniformly arranged on the uniform cover corresponding to the leaching column. According to the utility model, a plurality of rain inlet needle holes are formed in the uniform cover, so that a solution can be uniformly injected, and the problems of non-uniform solution injection and disturbance to surface soil caused by directly pouring the solution at the upper end of the leaching column or introducing the solution through a plastic pipe are avoided, thereby improving the accuracy of an experimental result. According to the utility model, the leaching column water inlet valve is arranged, so that the leaching flow rate can be adjusted according to experimental requirements, the experimental rainfall intensity is ensured to be consistent with the experimental requirements, the soil leaching process under different rainfall intensities can be truly simulated, and the controllability and accuracy of the experiment are enhanced. Stratified sampling and efficient collection are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental science and soil science research, and more specifically to a uniform leaching leaching column leaching simulation device. Background Art

[0002] In the field of environmental engineering technology, soil is an important natural resource for human survival, and its quality directly affects human life and health. However, with the rapid development of industrialization and urbanization, soil pollution has become increasingly serious, among which soil leaching is an important research direction. Soil leaching refers to the process in which substances in the soil dissolve and migrate downward with the water under the action of water. Through the study of soil leaching, we can understand the migration and transformation laws of various substances in the soil (such as nutrients, heavy metals, organic matter, etc.), and provide a scientific basis for soil protection and restoration.

[0003] The existing leaching column leaching device usually includes a leaching column and a water supply device. The solution is injected into the leaching column through the water supply device to simulate the scouring process of rainwater on the soil. Then, the migration and transformation rules of substances in the soil are studied through sampling and analysis. However, this device often has some problems in actual operation:

[0004] 1) When injecting solution into the existing leaching column leaching device, the solution is usually poured directly onto the upper end of the leaching column or introduced through a plastic pipe. This method not only makes it difficult to ensure uniform injection of the solution, but also may disturb the surface soil, affecting the accuracy of the experimental results.

[0005] 2) The existing leaching column leaching device cannot accurately control the injection speed of the solution and cannot truly simulate the soil leaching process under different rainfall intensities.

[0006] 3) The existing leaching column leaching device also has inconvenience in sampling. Usually, sampling can only be performed at the upper and lower ends of the leaching column, which cannot meet the needs of stratified sampling of the soil profile.

[0007] Therefore, it is necessary to provide a leaching column leaching simulation device which can leach evenly, has an adjustable leaching rate and is convenient for sampling to overcome the above-mentioned defects. Utility Model Content

[0008] The utility model aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.

[0009] Therefore, one purpose of the utility model is to solve the problem of uniform leaching of the leaching column and reduce the disturbance of the surface soil of the leaching column.

[0010] Another purpose of the utility model is to solve the problem of collecting the eluent.

[0011] Other purposes of the present invention are to simulate the leaching effects of different rainfall intensities.

[0012] Other purposes of the utility model are to facilitate stratified sampling.

[0013] The utility model provides a uniform leaching leaching column leaching simulation device, comprising: a leaching column and a water storage container located above the leaching column, the top of the leaching column is connected with a uniform cover, and a plurality of rain inlet pinholes are uniformly arranged on the uniform cover corresponding to the leaching column.

[0014] Furthermore, it also includes a leaching column water inlet valve, which is installed above the uniform cover and is connected to the water storage container.

[0015] Furthermore, a connecting hose is connected to the bottom of the water storage container, and the leaching column water inlet valve is installed at the end of the connecting hose; and a water outlet valve is installed on the connecting hose near the water storage container.

[0016] Furthermore, the top of the water storage container has a water inlet and an exhaust port.

[0017] Furthermore, a leaching column base is installed at the bottom of the leaching column, a leaching solution outlet is extended outward from the leaching column base, and a liquid collector is provided below the leaching solution outlet.

[0018] Furthermore, a leaching column fixing ring is provided on the top of the leaching column, and the leaching column fixing ring is connected to the uniform cover.

[0019] Furthermore, a plurality of groups of sampling holes are arranged on the outer wall of the leaching column at intervals in the vertical direction.

[0020] Furthermore, the sampling hole is sealed by a rubber plug.

[0021] It can be seen from the above technical solution that compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. Uniform leaching: The utility model provides a plurality of rain inlet pinholes on the uniform cover. Since the rain inlet pinholes have a certain thickness, they can store water and achieve uniform injection of the solution, thus avoiding the problems of uneven solution injection and disturbance of the surface soil caused by directly pouring the solution on the upper end of the leaching column or introducing the solution through a plastic pipe, thereby improving the accuracy of the experimental results.

[0023] 2. Accurately control rainfall intensity: The utility model can adjust the leaching flow rate according to experimental requirements by setting the leaching column water inlet valve. The leaching column water inlet valve is opened to a certain degree to ensure that the experimental rainfall intensity is consistent with the experimental requirements. It can truly simulate the soil leaching process under different rainfall intensities and enhance the controllability and accuracy of the experiment.

[0024] 3. Layered sampling: The leaching column fixing ring and the uniform cover of the utility model can be fixed by screws, and sampling holes are arranged on the outer wall of the leaching column according to certain sizes and intervals. The soil is sampled in layers according to experimental requirements, which meets the needs of layered sampling of soil profiles and improves the flexibility and practicality of the experiment.

[0025] 4. Efficient collection: The utility model is provided with a liquid collector just below the outlet of the leaching solution, which can effectively collect the leaching solution and avoid the waste of the solution. The amount of solution obtained is convenient for data recording and analysis of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a uniform leaching column leaching simulation device provided by the utility model;

[0028] Figure 2 The schematic diagram of the structure of the uniform cover is shown;

[0029] Figure 3 The schematic diagram of the structure of the leaching column fixing ring is shown. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Since the leaching column leaching device in the prior art usually includes a leaching column and a water supply device, the solution is injected into the leaching column through the water supply device to simulate the scouring process of rainwater on the soil, and then the migration and transformation rules of substances in the soil are studied through sampling and analysis. However, in actual operation, this device often has the problem of difficulty in ensuring uniform injection of the solution, causing disturbance to the surface soil, affecting the accuracy of the experimental results, and being unable to accurately control the injection speed of the solution, and unable to truly simulate the soil leaching process under different rainfall intensities. It cannot meet the needs of stratified sampling of soil profiles.

[0032] In view of this, the utility model provides a uniform leaching leaching column leaching simulation device, comprising: a leaching column 1 and a water storage container 11 located above the leaching column 1, see attached Figure 1 and 2 The top of the leaching column 1 is connected to a uniform cover 3, and a plurality of rain inlet pinholes 3-8 are uniformly arranged on the uniform cover 3 corresponding to the leaching column.

[0033] The uniform cover 3 is placed above the leaching column 1 to simulate the real rainfall characteristics and achieve uniform leaching. The uniform cover has rain pinholes 3-8 evenly distributed on the leaching column and has a certain thickness, which can store water and ensure that the water can be evenly distributed in the leaching column to avoid local over-wetting or over-drying. The disturbance of rainwater entering the surface soil of the leaching column is reduced.

[0034] In one embodiment of the utility model, a leaching column water inlet valve 5 is further included, and the leaching column water inlet valve 5 is installed above the uniform cover 3 and communicated with the water storage container 11. The leaching column water inlet valve 5 controls the rain inlet speed and rainfall adjustment.

[0035] Advantageously, a connecting hose 9 is connected to the lower part of the water storage container 11 , and the leaching column water inlet valve 5 is installed at the end of the connecting hose 9 ; and a water outlet valve 10 is installed on the connecting hose 9 close to the water storage container 11 .

[0036] In the utility model, the water inlet valve 5 of the leaching column is used to control the amount and speed of water entering the leaching column to simulate different rain intensities. The water outlet valve 10 is used to control the discharge amount of the leaching solution to ensure safe operation during the experiment.

[0037] The connecting hose 9 connects the leaching column water inlet valve 5 and the water outlet valve 10 to ensure the smooth flow of water. A flow meter or other device can be arranged on the connecting hose 9 to accurately control the amount of water entering the leaching column.

[0038] More advantageously, the top of the water storage container 11 has a water inlet 12 and an exhaust port 13. The water storage container 11 is used to store the amount of water required for the experiment to ensure continuous water supply during the experiment. The water inlet 12 and the exhaust port 13 are provided to ensure that the amount of water and the pressure in the water storage container 11 are stable.

[0039] In another embodiment of the utility model, a leaching column base 6 is installed at the bottom of the leaching column 1, and a leaching solution outlet 7 is extended outward from the leaching column base 6, and a liquid collector 8 is provided below the leaching solution outlet 7. The leaching column base 6 supports the entire leaching column and is provided with a leaching solution outlet 7. The leaching solution outlet 7 is located at the bottom of the leaching column base 6, which is convenient for collecting and analyzing the leached liquid. The liquid collector 8 is placed directly below the leaching solution outlet 7 to collect the liquid flowing out of the leaching column. It is convenient to conduct chemical analysis of the leaching solution later to study the migration and transformation of substances in the leaching process.

[0040] The top of the leaching column 1 is provided with a leaching column fixing ring 4, which is connected to the uniform cover 3. The leaching column fixing ring 4 is fixed to the top of the leaching column 1 to fix the soil and maintain its stability. It is connected to the uniform cover 3 through screws and screw holes to ensure the overall stability of the device. Figure 2 and 3 The screw holes can be arranged in multiple annular shapes. The uniform cover 3 includes a body 3-1. A rain inlet pinhole plate of a corresponding size is arranged in the middle of the body 3-1 relative to the top area of ​​the leaching column. The first screw hole 3-2, the second screw hole 3-3, the third screw hole 3-4, the fourth screw hole 3-5, the fifth screw hole 3-6, and the sixth screw hole 3-7 are arranged in an annular shape outside the rain inlet pinhole plate. Similarly, the leaching column fixing ring 4 includes a fixing ring body 4-1, the middle of which is a through hole. The fixing ring body 4-1 is provided with a seventh screw hole 4-2, an eighth screw hole 4-3, a ninth screw hole 4-4, a tenth screw hole 4-5, an eleventh screw hole 4-6, and a twelfth screw hole 4-7.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] A plurality of groups of sampling holes are arranged at intervals in the vertical direction on the outer wall of the leaching column 1 of the utility model. In the leaching state, the sampling holes are blocked by rubber plugs. The spacing and size of the sampling holes can be made according to the experimental requirements, and samples can be taken at different depths and positions according to the experimental requirements to study the leaching characteristics of different layers of soil. Figure 1 There are multiple groups of sampling holes equally spaced on both sides of the elution column 1, including at least the first sampling hole 2-1.

[0043] When in use, first plug the sampling hole with a rubber plug to prevent water leakage, then fill a small amount of quartz sand and the soil required for the experiment into the leaching column 1 in sequence, and then fix the uniform cover 3 to the leaching column fixing ring 4, place the water storage container 11 in a higher position, place the leaching column 1 on a stable shelf, and place the liquid collector 8 directly below the leaching column 1. Use a connecting hose 9 to connect the leaching column water inlet valve 5 and the water outlet valve 10. According to the experimental requirements, the leaching flow rate can be adjusted by controlling the leaching column water inlet valve 5, and the leaching column water inlet valve 5 is opened to a certain degree to ensure that the experimental rainfall intensity is consistent with the experimental requirements.

[0044] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0045] During leaching, the preset leaching solution passes through the water inlet 12 and enters the water storage container 11. The exhaust port 13 is normally exhausted to ensure that the solution can infiltrate normally. The solution comes out of the water outlet valve 10 and enters the connecting hose 9. The solution comes out of the connecting hose 9 and passes through the leaching column water inlet valve 5. The leaching flow rate is controlled by the opening degree and water inlet volume of the leaching column water inlet valve 5. The leaching solution enters the uniform cover 3, flows out through the uniform cover 3, and is evenly sprinkled into the leaching column 1. After the solution flows through the leaching column 1, it flows out from the leaching solution outlet 7 and directly enters the liquid collector 8. Sampling is taken after the experiment, and relevant data are recorded for analysis.

[0046] The utility model can be widely used in application fields such as environmental engineering technology, soil science technology, and simulation experimental device manufacturing technology. In the field of environmental engineering technology, the utility model can provide more accurate experimental data for the study of soil leaching problems, help to understand the migration and transformation laws of various substances in the soil, and provide a scientific basis for soil protection and restoration. In the field of soil science technology, stratified sampling of soil can be achieved, which helps to more deeply understand the structure and function of the soil. In the field of simulation experimental device manufacturing technology, a new design idea for soil column leaching device is provided, which helps to improve the accuracy and ease of operation of the experimental device. At the same time, with the improvement of environmental awareness and the deepening of soil research, the market demand for the utility model will become greater and greater.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A uniform leaching column leaching simulation device, comprising: A leaching column (1) and a water storage container (11) located above the leaching column (1), characterized in that a uniform cover (3) is connected to the top of the leaching column (1), and a plurality of rain inlet pinholes (3-8) are uniformly arranged on the uniform cover (3) corresponding to the leaching column.

2. A uniform leaching column leaching simulation device according to claim 1, characterized in that: It also comprises a leaching column water inlet valve (5), wherein the leaching column water inlet valve (5) is installed above the uniform cover (3) and is in communication with the water storage container (11).

3. A uniform leaching column leaching simulation device according to claim 2, characterized in that: A connecting hose (9) is connected below the water storage container (11), and the leaching column water inlet valve (5) is installed at the end of the connecting hose (9); a water outlet valve (10) is installed on the connecting hose (9) near the water storage container (11).

4. A uniform leaching column leaching simulation device according to any one of claims 1 to 3, characterized in that: The top of the water storage container (11) is provided with a water inlet (12) and an air outlet (13).

5. A uniform leaching column leaching simulation device according to any one of claims 1 to 3, characterized in that: A leaching column base (6) is installed at the bottom of the leaching column (1), a leaching solution outlet (7) extends outward from the leaching column base (6), and a liquid collector (8) is provided below the leaching solution outlet (7).

6. A uniform leaching column leaching simulation device according to claim 2, characterized in that: A leaching column fixing ring (4) is provided on the top of the leaching column (1), and the leaching column fixing ring (4) is connected to the uniform cover (3).

7. A uniform leaching column leaching simulation device according to any one of claims 2-3 and 6, characterized in that: A plurality of groups of sampling holes are arranged at intervals along the vertical direction on the outer wall of the leaching column (1).

8. A uniform leaching column leaching simulation device according to claim 7, characterized in that: The sampling hole is blocked by a rubber plug.

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