Soil sample preparation device for geotechnical test

Abstract

The utility model discloses a soil test soil sample preparation device, which comprises a base, a separation net, a coaming, an air pump and an air pipe, the base is internally provided with a cavity capable of accommodating liquid, the top of the base is provided with a first through hole communicated with the cavity, the separation net is arranged in the first through hole, and the coaming is arranged in the first through hole. The periphery of the first through hole is rotationally connected with the multiple surrounding plates, the surrounding plates can rotate to define a cylinder, a cylinder cover is arranged above the cylinder, the top of the cylinder cover is provided with the air pump, and the air pump communicates with the cavity through an air pipe. The soil sample preparation device is suitable for preparation of various types of soil samples, the moisture content of cohesive soil, sandy soil, mixed soil and the like can be flexibly adjusted according to actual requirements, and convenience is provided for scientific research and engineering application of geotechnical tests.

Description

TECHNICAL FIELD

[0001] The utility model relates to geotechnical test technical field especially is related to a soil sample preparation device for geotechnical test. BACKGROUND

[0002] In geotechnical test, preparation of soil sample with specific moisture content is the basis for various tests and researches. Traditional soil sample preparation method usually relies on direct addition of water to soil and achieves required humidity condition through manual mixing, or utilizes methods such as spraying or soaking to adjust moisture content of soil. However, existing technology is difficult to ensure uniform distribution of water in entire soil sample, which is prone to cause local over-wetting or over-drying phenomenon, affecting accuracy and reliability of experimental results. SUMMARY

[0003] In view of the above existing technology, the utility model provides a soil sample preparation device for geotechnical test, which solves the above technical problems.

[0004] To achieve the above purpose, the technical scheme of the utility model embodiment is as follows:

[0005] A soil sample preparation device for geotechnical test, comprising a base, a separation net, a coaming, an air pump and an air pipe, wherein the base is provided with a cavity capable of containing liquid, the top of the base is provided with a first through hole in communication with the cavity, the separation net is arranged in the first through hole, the outer periphery of the first through hole is rotatably connected with a plurality of coamings, the coamings can be rotated to form a cylindrical barrel, a barrel cover is arranged above the cylindrical barrel, the air pump is arranged on the top of the barrel cover, and the air pump is in communication with the cavity through the air pipe.

[0006] Further, the bottom of the coaming is provided with a hinge, the coaming is rotatably connected with the base through the hinge, and the upper end of the coaming is sleeved in a fixed hoop.

[0007] Further, the barrel cover comprises an upper barrel and a lower barrel, the lower barrel is connected to the bottom of the upper barrel, the upper barrel is in communication with the air pump, and the inner diameter of the lower barrel is greater than that of the upper barrel.

[0008] Further, the cavity is provided with a heating disc.

[0009] Further, the cavity is provided with a guide rod and a buoyancy plate, the buoyancy plate is slidably connected with the guide rod, and the heating disc is arranged on the buoyancy plate.

[0010] Further, the buoyancy plate comprises a flat plate and a buoyancy block, the flat plate passes through the second through hole of the guide rod at the periphery, and the buoyancy block is arranged at the upper portion of the buoyancy plate.

[0011] Further, the buoyancy block is a closed metal tank.

[0012] The beneficial effects of the utility model lie in: through loading liquid (such as water) in the base cavity and combining the air circulation system driven by the air pump, water vapor can be effectively introduced into the soil in the cylindrical barrel, the water content of the soil can be accurately controlled and adjusted, and the requirement of different soil tests on soil humidity is met. The airflow is prevented from escaping from the gap between the coaming, thereby improving the circulation flow of water vapor in the cylindrical barrel and enhancing the efficiency of soil humidity adjustment. The utility model is suitable for various types of soil sample preparation, and no matter clay, sandy soil or mixed soil, the water content can be flexibly adjusted according to actual requirements, which provides convenience for soil test scientific research and engineering application. The utility model uses water vapor generated by water evaporation to adjust soil humidity, and avoids the problems of excess or unevenness caused by directly adding water. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of a soil sample preparation device for soil test in the embodiment of the application;

[0014] Figure 2 It is a sectional structure schematic view of a soil sample preparation device for soil test in the embodiment of the application;

[0015] Figure 3 It is Figure 2 It is a local amplification structure schematic view of area A;

[0016] Figure 4 It is a sectional structure schematic view of a soil sample preparation device for soil test in the embodiment of the application;

[0017] EXPLANATION OF DRAWINGS:

[0018] 1, base; 2, isolation net; 3, coaming; 4, air pump; 5, air pipe; 6, first through hole; 7, hinge; 8, fixed hoop; 9, barrel cover; 10, upper barrel; 11, lower barrel; 12, heating disc; 13, guide rod; 14, buoyancy plate; 15, buoyancy block; 16, flat plate; 17, second through hole. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further described in detail in combination with the drawings and specific embodiments. Unless otherwise defined, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by the person skilled in the art of the utility model. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model.

[0020] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; for example, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It must be noted that as used herein, the terms "over," "under," "above," "on" and "on top of, " meaning that the one element can be directly on, commutating with or positioned above the other element, which means that there can be one or more intermediate elements between the one and the other element. As used herein, the term "vertical", "horizontal", "inner", "outer", "left", "right" and similar terms are used for explanation purpose only and are not intended to be the only orientation or position.

[0021] Embodiment 1

[0022] Please refer to the accompanying drawings Figures 1-4 The application provides a soil sample preparation device for geotechnical test, comprising a base 1, an isolation net 2, a surrounding board 3, an air pump 4 and an air pipe 5, the base 1 is internally provided with a cavity capable of containing liquid, the top of the base 1 is provided with a first through hole 6 in communication with the cavity, the isolation net 2 is arranged in the first through hole 6, the periphery of the first through hole 6 is rotatably connected with a plurality of surrounding boards 3, the surrounding boards 3 can be rotated to form a cylindrical barrel, a barrel cover 9 is arranged above the cylindrical barrel, the top of the barrel cover 9 is provided with the air pump 4, the air pump 4 is in communication with the cavity through the air pipe 5. When preparing the soil sample, the soil is put into the cylindrical barrel, and the surrounding board 3 is used to surround the soil. Liquid, such as water, is filled into the cavity of the base 1. The air pump 4 is started to drive air circulation, the air flows upward from the cylindrical barrel to the air pump 4 and then flows back to the cavity through the air pipe 5, forming air circulation. Since the cavity is filled with water, the water vapor generated by evaporation enters the soil, thereby increasing the water content in the soil. Different water contents of the soil can be prepared according to the needs of the geotechnical test, so as to facilitate the detection of various properties of the soil. The first through hole 6 at the top of the base 1 connects the inner cavity of the cylindrical barrel and the cavity inside the base 1, and the water vapor can enter the soil in the cylindrical barrel from the first through hole 6. The barrel cover 9 is used to cover the top of the cylindrical barrel, which can prevent the air flow from entering the atmosphere through the gap between the surrounding boards 3, improve the circulation flow of the water vapor in the cylindrical barrel, and promote the humidity adjustment of the soil.

[0023] Preferably, the height of the liquid surface in the cavity is greater than the height of the lower end of the air pipe 5, so that the lower end of the air pipe 5 is submerged in water. When the air flow circulates, the water body generates bubbles, promoting the evaporation of the water body and enabling the water content of the soil to be increased faster.

[0024] Specifically, the bottom of the surrounding board 3 is provided with a hinge 7, the surrounding board 3 is rotatably connected with the base 1 through the hinge 7, and the upper end of the surrounding board 3 is sleeved in a fixing hoop 8. The surrounding board 3 can be rotated to the four directions, thereby opening the cylindrical barrel, and the opened cylindrical barrel is convenient for placing the soil. After the soil is placed in the surrounding board 3, the surrounding board 3 is folded into a cylindrical barrel, and then the top of the surrounding board 3 is sleeved with the fixing hoop 8, thereby improving the stability of the surrounding board 3.

[0025] Specifically, the cylinder cover includes an upper cylinder 10 and a lower cylinder 11, the lower cylinder is connected to the bottom of the upper cylinder 10, the upper cylinder 10 communicates with the air pump 4, and the inner diameter of the lower cylinder 11 is greater than that of the upper cylinder 10. The hinge 7 is located in the lower cylinder 11, and by setting different inner diameters, the bottom of the cylinder cover can be attached to the base 1 after covering the cylindrical cylinder, so that the gas leakage in the circulation is reduced.

[0026] Embodiment 2

[0027] Please refer to the accompanying drawings Figures 1-4 The difference between the embodiment and embodiment 1 is that the cavity is provided with a heating disc 12. The heating disc 12 is used to heat the water in the cavity, promote the evaporation of the water body, and can quickly increase the water content of the soil.

[0028] Specifically, the cavity is provided with a guide rod 13 and a buoyancy plate 14, the buoyancy plate 14 is slidably connected with the guide rod 13, and the heating disc 12 is arranged on the buoyancy plate 14. Under the action of the buoyancy plate 14, the heating disc 12 is located at the upper part of the water body, and directly heats the upper part of the water body during heating. The water body with high temperature has large density and is located at the upper part, which can ensure that the heating disc 12 more concentratedly heats the upper part of the water body, thereby promoting the evaporation of the water body, quickly increasing the water content of the soil, and reducing energy consumption. With the evaporation of water, the water level gradually decreases, the buoyancy plate 14 drives the heating disc 12 to move downward, so that the heating disc 12 can always heat the upper part of the water body.

[0029] Specifically, the buoyancy plate 14 includes a flat plate 16 and a buoyancy block, the flat plate 16 penetrates through the second through hole 17 of the guide rod 13 around, and the buoyancy block 15 is arranged at the upper part of the buoyancy plate 14. The buoyancy block 15 provides buoyancy so that the flat plate 16 and the heating disc 12 are located at the upper part of the water body, the upper part of the buoyancy plate 14 is out of the water surface, and the flat plate 16 and the heating disc 12 located at the bottom of the buoyancy plate 14 are always submerged in water.

[0030] Specifically, the buoyancy block 15 is a closed metal tank. The metal tank can have good heat resistance and prevent the buoyancy block 15 from being damaged due to high temperature.

[0031] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A soil sample preparation device for geotechnical testing, characterized by, The utility model relates to a liquid culture device, including base (1), isolation net (2), coaming (3), air pump (4) and air pipe (5), the cavity that can hold liquid is equipped with in the base (1), the top of base (1) is equipped with with the cavity intercommunication first through -hole (6), isolation net (2) is located first through -hole (6) is in, the periphery of first through -hole (6) is rotatably connected with a plurality of coaming (3), the coaming (3) can rotate and enclose cylinder, the cylinder cover (9) is equipped above the cylinder, the cylinder cover (9) top is equipped with air pump (4), air pump (4) is communicated with the cavity through air pipe (5).

2. The soil sample preparation apparatus for soil tests according to claim 1, wherein The bottom of coaming (3) is equipped with hinge (7), and coaming (3) is rotatably connected with base (1) through hinge (7), and the upper end of coaming (3) is sleeved in fixed hoop (8).

3. The soil sample preparation apparatus for soil tests according to claim 2, wherein The cylinder cover (9) includes upper cylinder (10) and lower cylinder (11), and the lower cylinder (11) is connected to the bottom of the upper cylinder (10), the upper cylinder (10) is communicated with the air pump (4), and the inner diameter of the lower cylinder (11) is greater than that of the upper cylinder (10).

4. The soil sample preparation apparatus for soil tests according to claim 1, wherein The cavity is equipped with a heating disc (12).

5. The soil sample preparation apparatus for soil tests according to claim 4, wherein The cavity is equipped with a guide rod (13) and a buoyancy plate (14), the buoyancy plate (14) is slidably connected with the guide rod (13), and the heating disc (12) is arranged on the buoyancy plate (14).

6. The soil sample preparation apparatus for soil tests according to claim 5, wherein The buoyancy plate (14) includes a flat plate (16) and a buoyancy block, the second through-hole (17) of the guide rod (13) passes through the periphery of the flat plate (16), and the buoyancy block (15) is arranged on the upper portion of the buoyancy plate (14).

7. The soil sample preparation apparatus for soil tests according to claim 6, wherein The buoyancy block (15) is a closed metal tank.

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