Underground water level regulation simulation device

Abstract

The invention relates to an underground water level regulation simulation device. The device comprises a water tank, a water level control structure and an incubator group, the incubator group comprises a plurality of incubators with the same specification; a bracket is arranged on the water tank and is used for fixing the water level control structure; the water level control structure is fixed above the water tank and is connected with the incubator through a steel cable; through holes are formed in the bottom of the incubator, and a gauze and gravels are arranged at the bottom in the incubator to ensure that soil in the incubator is not lost, but water in the water tank can enter the incubator. The device is simple in structure and low in use cost, is suitable for simulating the lifting change of the underground water level, and provides support for plant physiology and ecology tests, soil nutrient circulation tests and the like related to the underground water level change. Through the combination of the systems, different underground water level depth values in the culture box can be set, so that soil culture conditions with different underground water level depth values are obtained.

Description

Technical Field

[0001] The invention relates to a groundwater level regulation simulation device, belonging to the technical field of experimental devices. Background Art

[0002] Under the background of global warming and the strong disturbance of human activities, groundwater levels around the world have been seriously affected. Plants and soils, as an important part of the carbon cycle, play an important role in the absorption and emission of carbon in the atmosphere. Changes in the depth of groundwater levels in the soil are of great significance to the physiological processes, ecological distribution patterns, survival, renewal and development of plants. Therefore, it is necessary to explore the impact of groundwater levels on the biochemical effects of soil and crops.

[0003] In the study of the effect of groundwater level on plants and soil nutrients, the method of artificially simulating the groundwater level is mainly used. At present, the device for simulating groundwater level mainly uses a complex water channel design to achieve a single groundwater level simulation. It is impossible to simultaneously meet the test conditions of different groundwater level depths. In addition, the structure is complex, and the debugging, operation, and maintenance of the equipment are not convenient. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to propose a groundwater level regulation simulation device in view of the problems existing in the above-mentioned prior art.

[0005] Technical solution: The present invention discloses a groundwater level regulation simulation device, comprising a water tank, a water level control structure and an incubator group; wherein, brackets are provided on both sides of the water tank, the water level control structure is fixed on the brackets, the incubator group comprises a plurality of incubators of the same specifications, and a height difference is set between the plurality of incubators as required, the water level control structure comprises a plurality of rotating shafts and a plurality of steel cables, each rotating shaft is provided with a pulley, and both ends of each rotating shaft are respectively fixed on the brackets, each steel cable passes through the pulley and is connected to a crank at one end, and is connected to an incubator at the other end, and the plurality of incubators are all located above the water tank; the height of the plurality of incubators can be adjusted simultaneously by turning the crank to realize the water level regulation function. The height difference of the plurality of incubators is equal to the groundwater level difference of the different treatment groups required by the experiment.

[0006] Furthermore, the water tank is a rectangular container with an open top, and is filled with test water or raw groundwater having the same composition as the groundwater in the area under study.

[0007] Furthermore, the number of the plurality or the plurality of roots is greater than or equal to 2.

[0008] Furthermore, after the rotating shaft passes through the middle hole of the pulley, it is evenly arranged and fixed at both ends to the upper part of the bracket.

[0009] Furthermore, limit plates are respectively provided on both sides of the pulley, and the limit plates are fixed on the rotating shaft so that the pulley cannot slide left and right on the rotating shaft.

[0010] Furthermore, each steel cable passes through the groove of the pulley and is respectively connected to the same crank handle and different incubators.

[0011] Furthermore, a hanging rope is arranged on the upper part of the incubator, and a hook is arranged at one end of each steel cable to hook the hanging rope on the upper part of the incubator, so that the incubator is always kept horizontal, and a crank is arranged on the side of the bracket.

[0012] Furthermore, a plurality of through holes are provided at the bottom of each incubator so that water in the water tank can penetrate into or seep out of the incubator from the bottom.

[0013] Furthermore, a mark is provided on the outside of each incubator to mark the water depth of the incubator after it is lowered, and the height difference between the incubators is the simulated groundwater level difference.

[0014] Furthermore, each incubator has a mesh, a gravel layer, and soil from bottom to top, to ensure that the soil in the incubator is not lost and that the water in the water tank can enter the incubator.

[0015] The present invention does not have a complicated water pipeline design. It can simulate different groundwater levels at the same time by changing the water entry depth of the incubator through a simple mechanical structure, which can provide favorable support for related research work. The present invention is suitable for simulating the rise and fall of groundwater levels and provides support for plant physiological and ecological experiments related to groundwater level changes, soil nutrient cycle experiments, etc.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] (1) The device of the present invention has no complicated waterway design and is easy to debug, operate and maintain;

[0018] (2) The present invention can simulate different groundwater levels at the same time, providing convenience for simulation experiments;

[0019] (3) The soil layer setting in the culture box of the present invention is not too specific, can meet the experimental design requirements of various experiments, and has a wide range of applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a groundwater level regulation simulation device of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the incubator filled inside;

[0022] Figure 3 This is an enlarged view of the details at the shaft;

[0023] Figure 4 This is an enlarged view of the connection between the steel cable and the incubator;

[0024] Among them, 1. water tank; 2. bracket; 3. rotating shaft; 4. pulley; 5. steel cable; 6. crank handle; 7. incubator; 8. limit plate; 9. hanging rope; 10. hook; 11. through hole; 12. mark; 13. gauze; 14. gravel; 15. soil. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, the groundwater level regulation simulation device of the present invention mainly includes a water tank 1, a water level control structure and an incubator group. The water tank 1 is a rectangular container with an open top, which is filled with test water or groundwater raw water with the same composition as the groundwater in the studied area, and brackets 2 are arranged on both sides of the water tank 1.

[0027] The water level control structure includes four rotating shafts 3, four pulleys 4, four steel cables 5 and one crank 6.

[0028] The incubator group consists of four incubators 7 of the same specifications. A height difference is set between the four incubators 7 according to experimental requirements. The height difference between the four incubators 7 is equal to the groundwater level difference of different treatment groups required by the experiment.

[0029] The water level control structure is fixed on the bracket 2. The four rotating shafts 3 are evenly arranged after passing through the middle hole of a pulley 4 and fixed at both ends on the upper part of the bracket 2. Limit plates 8 are fixed on both sides of each pulley 4, and the limit plates 8 are fixed on the rotating shaft 3 to prevent the pulley 4 from sliding left and right on the rotating shaft 3. After each steel cable 5 passes through the groove of the pulley 4, one end is connected to the crank 6, and the other end is connected to an incubator 7, such as Figure 1 : The first steel cable 5 passes through the groove of the first pulley 4 from the left and is connected to the first incubator 7, the second steel cable 5 passes through the grooves of the first pulley 4 and the second pulley 4 from the left and is connected to the second incubator 7, the third steel cable 5 passes through the grooves of the first pulley 4, the second pulley 4 and the third pulley 4 from the left and is connected to the third incubator 7, the fourth steel cable 5 passes through the grooves of the first pulley 4, the second pulley 4, the third pulley 4 and the fourth pulley 4 from the left and is connected to the fourth incubator 7, and so on.

[0030] A group of hanging ropes 9 are provided on the upper part of each incubator 7. A hook 10 is provided at one end of each steel cable 5 to hook the hanging rope 9 on the upper part of the corresponding incubator 7, so that the incubator 7 always remains horizontal. The other ends of all the steel cables 5 are connected to the same crank 6, and the crank 6 is arranged on the side of the bracket 2. By turning the crank 6, the heights of multiple incubators 7 can be adjusted at the same time, thereby realizing the water level adjustment function.

[0031] A plurality of through holes 11 are provided at the bottom of each incubator 7 so that the water in the water tank 1 can penetrate into or seep out of the incubator 7 from the bottom. There is a mark 12 on the outside of each incubator 7 to mark the depth of the incubator 7 after it is put down. The height difference between each incubator 7 is the simulated groundwater level difference. Inside each incubator 7, a gauze 13, a gravel layer 14, and soil 15 are provided from bottom to top. The height of the gauze 13, the height of the gravel layer 14, and the height of the soil 15 are the same between different incubators 7, but the height of the gauze 13, the gravel layer 14, and the soil 15 in each incubator 7 is set according to the needs. It is ensured that the soil in the incubator is not lost, and the water in the water tank can enter the incubator.

[0032] Working mechanism:

[0033] During the experiment, first inject groundwater of sufficient depth into the water tank 1. Fill the gauze 13, gravel 14, and soil 1 into the incubator 7 in sequence. Adjust the length of the steel cable 5 between the incubator 7 and the pulley 3 so that the height difference of the incubator 7 is equal to the groundwater level difference of the different treatment groups required by the experiment. Turn the handle 6 so that the water depth of the top incubator 7 is exactly equal to the groundwater level value of the shallowest groundwater level simulation group. Make sure that the bottom incubator 7 does not touch the bottom in the water tank 1, and then the experiment can be carried out according to the experimental requirements. If the bottom incubator 7 touches the bottom in the water tank 1, it means that there is insufficient groundwater in the water tank 1, and water needs to be added and the above operation needs to be repeated to adjust the water depth of the incubator 7. Finally, the experiment is carried out.

Claims

1. A groundwater level regulation simulation device, characterized in that: The invention comprises a water tank (1), a water level control structure and a culture box group; wherein brackets (2) are provided on both sides of the water tank (1); the water level control structure is fixed on the brackets (2); the culture box group comprises a plurality of culture boxes (7) of the same specification; a height difference is set between the plurality of culture boxes (7) as required; the water level control structure comprises a plurality of rotating shafts (3) and a plurality of steel cables (5); each rotating shaft (3) is provided with a pulley (4); both ends of each rotating shaft (3) are respectively fixed on the brackets (2); each steel cable (5) passes through the pulley (4); one end is connected to a crank (6); the other end is connected to a culture box (7); the plurality of culture boxes (7) are all located above the water tank (1); the heights of the plurality of culture boxes (7) can be adjusted simultaneously by rotating the crank (6), thereby realizing a water level adjustment function.

2. The groundwater level regulation simulation device according to claim 1, characterized in that: The water tank (1) is a rectangular container with an open top, and is filled with test water or raw groundwater having the same composition as the groundwater in the studied area.

3. The groundwater level regulation simulation device according to claim 1, characterized in that: The number of the plurality of roots is 2 or more.

4. The groundwater level regulation simulation device according to claim 1, characterized in that: After the rotating shaft (3) passes through the middle hole of the pulley (4), it is evenly arranged and fixed at both ends to the upper part of the bracket (2).

5. The groundwater level regulation simulation device according to claim 1, characterized in that: Limiting plates (8) are respectively arranged on both sides of the pulley (4), and the limiting plates (8) are fixed on the rotating shaft (3) so that the pulley (4) cannot slide leftward or rightward on the rotating shaft (3).

6. The groundwater level regulation simulation device according to claim 1, characterized in that: Each steel cable (5) passes through the groove of the pulley (4) and is respectively connected to the same crank handle (6) and different incubators (7).

7. The groundwater level regulation simulation device according to claim 1, characterized in that: A hanging rope (9) is arranged on the upper part of the incubator (7), and a hook (10) is arranged at one end of each steel cable (5) to hook the hanging rope (9) on the upper part of the incubator (7), so that the incubator (7) is always kept horizontal. The crank handle (6) is arranged on the side of the bracket (2).

8. The groundwater level regulation simulation device according to claim 1, characterized in that: A plurality of through holes (11) are provided at the bottom of each culture box (7) so that water in the water tank (1) can penetrate into or seep out of the culture box (7) from the bottom.

9. The groundwater level regulation simulation device according to claim 1, characterized in that: Each incubator (7) is provided with a mark (12) on the outside thereof, for marking the water entry depth of the incubator (7) after it is lowered, and the height difference between the incubators (7) is the simulated groundwater level difference.

10. The groundwater level regulation simulation device according to claim 1, characterized in that: Each culture box (7) is provided with a gauze screen (13), a gravel layer (14) and soil (15) from bottom to top.

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