Test tube for soil permeability detection

Abstract

The utility model belongs to the technical field of experimental equipment, and discloses a test tube for soil permeability detection, which comprises a test tube, a support plate fixedly mounted at the top end of the test tube, an inner cavity formed in the test tube, an extrusion structure slidably connected to the inner wall of the test tube, a mounting rod fixedly connected to the top end of a piston, and a pressing disc fixedly connected to the top end of the mounting rod. Soil is placed in a test tube, at the moment, a soil sample is reserved at the top end of a soil blocking plate, water can be poured into the device through a water source inlet, and therefore a water source can fall into the lower portion through the soil placed in the test tube and filter holes formed in the top end of the soil blocking plate at equal intervals, and falls into the bottom end of the test tube; the permeability of a current soil sample can be detected by observing a water source falling into the bottom end, a mounting rod and a piston can be pushed by pressing a pressing disc, and pressure can be applied to the interior of a test tube by pushing the piston, so that the pressure intensity in the test tube can be increased, and the permeation rate of water flow is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental equipment, in particular to a test tube for soil penetration detection. Background Art

[0002] The permeability test is a test that uses some test equipment to measure the permeability coefficient of rock and soil. It is divided into two categories: indoor test and field test.

[0003] For example, the utility model with publication number CN216260854U discloses a centrifuge tube for soil testing, including a tube body, a filter screen is provided in the tube body, the filter screen is connected to a clamping block by rotating through a rotating shaft, a torsion spring is provided in the rotating shaft, and the clamping block is arranged in an inclined direction; the clamping block is also connected to a fixed rod, a groove is provided in the fixed rod, and a telescopic inner rod is slidably connected in the groove; the tube body is also provided with a piston cover. This device is easy to operate and has a long service life. The filter screen provided can better complete the pre-treatment of the cation exchange capacity of light soil, prevent the soil from being lost with the supernatant, and effectively improve the accuracy of the detection.

[0004] When the device is in use, the filter screen can effectively prevent the soil from being lost along with the supernatant, thereby effectively improving the accuracy of detection. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a test tube for soil penetration detection, which has the advantage of being able to speed up the penetration detection of soil samples.

[0006] To achieve the above object, the present invention provides the following technical solution: a test tube for soil permeability detection, comprising a test tube, a support plate fixedly mounted on the top of the test tube, an inner cavity formed inside the test tube, and an extrusion structure slidably connected to the inner wall of the test tube;

[0007] The extrusion structure includes a piston, a mounting rod and a pressing plate. The outer wall of the piston is slidably connected to the inner wall of the test tube. The top of the piston is fixedly connected to the mounting rod, and the top of the mounting rod is fixedly connected to the pressing plate.

[0008] Preferably, the pressing plate is fixedly connected to the top end of the mounting rod, and the top end of the pressing plate is provided with anti-slip grooves at equal intervals.

[0009] Preferably, the left side wall of the test tube is connected to a soil delivery port, the outer wall of the soil delivery port is threadedly connected to a first fixed cover, the right side of the test tube is connected to a water source inlet, and the outer wall of the water source inlet is threadedly connected to a second fixed cover.

[0010] Preferably, a soil barrier plate is fixedly connected to the inner wall of the test tube, and a filter hole is provided on the top of the soil barrier plate.

[0011] Preferably, the filter holes are opened at the top of the soil barrier plate, and the filter holes are provided in a plurality of groups and are arranged at equal intervals about the central axis of the soil barrier plate.

[0012] Preferably, a fixing plug is installed at the bottom end of the test tube, and scale lines are provided on the front wall of the test tube.

[0013] Preferably, the fixing plug is threadedly connected to the bottom end of the scale line, and the scale line is provided with a plurality of groups fixed on the front wall of the test tube at equal intervals.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model places soil inside the test tube, at which time the soil sample will remain on the top of the soil barrier plate, and water can be poured into the device through the water source inlet, so that the water source can pass through the soil placed inside the test tube and the filter holes arranged at equal intervals on the top of the soil barrier plate and fall down to the bottom of the test tube. By observing the water source falling to the bottom, the permeability of the current soil sample can be detected, and the installation rod and the piston can be pushed by pressing the pressing plate. By pushing the piston, pressure can be applied to the inside of the test tube, thereby increasing the pressure inside the test tube and accelerating the rate of water infiltration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present utility model;

[0018] Figure 3 This is a front view structural diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model in a front view cross-section experimental state;

[0020] Figure 5 This is a schematic diagram of the overall structure of the extrusion structure of the utility model;

[0021] In the figure: 1. test tube; 2. support plate; 3. extrusion structure; 301. piston; 302. mounting rod; 303. pressing plate; 4. soil inlet; 5. first fixing cover; 6. water source inlet; 7. second fixing cover; 8. soil barrier plate; 9. filter hole; 10. fixing plug; 11. scale line. DETAILED DESCRIPTION

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

[0023] like Figures 1 to 5 As shown, the utility model provides a test tube for soil permeability detection, comprising a test tube 1, a support plate 2 fixedly mounted on the top of the test tube 1, an inner cavity is formed inside the test tube 1, and an extrusion structure 3 is slidably connected to the inner wall of the test tube 1;

[0024] The extrusion structure 3 includes a piston 301, a mounting rod 302 and a pressing plate 303. The outer wall of the piston 301 is slidably connected to the inner wall of the test tube 1. The top of the piston 301 is fixedly connected to the mounting rod 302. The top of the mounting rod 302 is fixedly connected to the pressing plate 303. The pressing plate 303 is fixedly connected to the top of the mounting rod 302. The top of the pressing plate 303 is provided with equally spaced anti-slip grooves.

[0025] With the above solution, by pressing the pressing plate 303, the mounting rod 302 is pushed to move the position of the piston 301. Since the first fixing cover 5, the second fixing cover 7 and the fixing plug 10 are all closed, the piston 301 is placed into the test tube 1 to apply pressure to the water inside the test tube 1, thereby accelerating the efficiency of soil permeability testing.

[0026] like Figures 1 to 5 As shown, the left side wall of the test tube 1 is connected to a soil input port 4, the outer wall of the soil input port 4 is threadedly connected to a first fixed cover 5, and the right side of the test tube 1 is connected to a water source inlet 6, the outer wall of the water source inlet 6 is threadedly connected to a second fixed cover 7.

[0027] The above solution is adopted: by rotating the first fixing cover 5, the first fixing cover 5 can be removed, so that the user can place the soil sample into the device through the soil input port 4, so that the soil sample to be tested falls on the top of the soil barrier plate 8. At this time, the first fixing cover 5 is installed to close the soil input port 4, and then the second fixing cover 7 can be removed by rotating the second fixing cover 7. Then, water is injected into the interior of the test tube 1 through the water source inlet 6. After the injection is completed, the second fixing cover 7 is closed. At this time, the device body is placed on the test tube rack, and the water source inside the device can be observed through the test tube 1 through the soil sample, the soil barrier plate 8 and the filter hole 9 to detect the permeability of the sample.

[0028] like Figures 1 to 5As shown, the inner wall of the test tube 1 is fixedly connected to a soil barrier plate 8, and the top of the soil barrier plate 8 is provided with filter holes 9. The filter holes 9 are opened at the top of the soil barrier plate 8, and the filter holes 9 are provided in several groups and are arranged at equal intervals about the central axis of the soil barrier plate 8.

[0029] With the above solution, the soil sample to be tested can be blocked by the soil barrier plate 8 and the filter holes 9, so that it remains at the top of the soil barrier plate 8. After the user injects water into the device, the water can pass through. Due to the gaps between the soil, the water will pass through the soil barrier plate 8 and the filter holes 9 and fall into the bottom of the test tube 1.

[0030] like Figures 1 to 5 As shown, a fixing plug 10 is installed at the bottom end of the test tube 1, and a scale line 11 is provided on the front wall of the test tube 1. The fixing plug 10 is threadedly connected to the bottom end of the scale line 11, and the scale line 11 is provided in several groups at equal intervals and fixed on the front wall of the test tube 1.

[0031] The above scheme is adopted: the outer wall of the fixing plug 10 and the bottom end of the test tube 1 are provided with mutually matching threads, so that the fixing plug 10 can be fixed to and detached from the bottom end of the test tube 1 during rotation, thereby closing and opening the bottom of the inner cavity of the test tube 1. After the user performs a permeability test on the soil sample, the fixing plug 10 is rotated to open and the inside of the test tube 1 can be cleaned, so that the user can reuse the device to ensure the practicality of the device, and when performing a permeability test on the soil sample, the permeability of the experimental soil sample can be accurately judged by the water source that penetrates to the bottom, and then the experimental data can be accurately recorded.

[0032] The working principle and usage process of the present invention are as follows: by placing soil inside the test tube 1, the soil sample will remain on the top of the soil barrier plate 8, and water can be poured into the device through the water source inlet 6, so that the water source can pass through the soil placed inside the test tube 1 and the filter holes 9 arranged at equal intervals on the top of the soil barrier plate 8 to fall down, so that it falls to the bottom of the test tube 1. By observing the water source falling to the bottom, the permeability of the current soil sample can be detected. By pressing the pressing plate 303, the installation rod 302 and the piston 301 can be pushed. By pushing the piston 301, pressure can be applied to the inside of the test tube 1, thereby increasing the pressure inside the test tube 1 and accelerating the rate of water infiltration.

[0033] And by rotating the first fixing cover 5, the first fixing cover 5 can be removed, so that the user can place the soil sample into the device through the soil injection port 4, so that the soil sample to be tested falls on the top of the soil barrier plate 8. At this time, the first fixing cover 5 is installed to close the soil injection port 4. Then, by rotating the second fixing cover 7, the second fixing cover 7 can be removed, and water is injected into the interior of the test tube 1 through the water source inlet 6. After the injection is completed, the second fixing cover 7 is closed. At this time, the device body is placed on the test tube rack, and the water source inside the device can be observed through the test tube 1. Passing through the soil sample, the soil barrier plate 8 and the filter hole 9 , to test the permeability of the sample. The outer wall of the fixing plug 10 and the bottom end of the test tube 1 are provided with mutually matching threads, which can make the fixing plug 10 fixed to and detached from the bottom end of the test tube 1 during rotation, thereby closing and opening the bottom of the inner cavity of the test tube 1. After the user performs permeability testing on the soil sample, the fixing plug 10 can be rotated to open and the inside of the test tube 1 can be cleaned, so that the user can reuse the device to ensure the practicality of the device. In addition, when performing permeability testing on the soil sample, the permeability of the experimental soil sample can be accurately judged by the water source that penetrates to the bottom, and the experimental data can be accurately recorded.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test tube for soil permeability detection, comprising a test tube (1), characterized in that: A support plate (2) is fixedly mounted on the top of the test tube (1), an inner cavity is provided inside the test tube (1), and an extrusion structure (3) is slidably connected to the inner wall of the test tube (1); The extrusion structure (3) comprises a piston (301), a mounting rod (302) and a pressing plate (303); the outer wall of the piston (301) is slidably connected to the inner wall of the test tube (1); the top end of the piston (301) is fixedly connected to the mounting rod (302); and the top end of the mounting rod (302) is fixedly connected to the pressing plate (303).

2. The test tube for soil penetration detection according to claim 1, characterized in that: The pressing plate (303) is fixedly connected to the top end of the mounting rod (302), and the top end of the pressing plate (303) is provided with anti-slip grooves at equal intervals.

3. The test tube for soil penetration detection according to claim 1, characterized in that: The left side wall of the test tube (1) is connected to a soil delivery port (4), and the outer wall of the soil delivery port (4) is threadedly connected to a first fixed cover (5). The right side end of the test tube (1) is connected to a water source inlet (6), and the outer wall of the water source inlet (6) is threadedly connected to a second fixed cover (7).

4. The test tube for soil penetration detection according to claim 1, characterized in that: A soil barrier plate (8) is fixedly connected to the inner wall of the test tube (1), and a filter hole (9) is provided at the top end of the soil barrier plate (8).

5. The test tube for soil penetration detection according to claim 4, characterized in that: The filter holes (9) are opened at the top of the soil barrier plate (8), and the filter holes (9) are arranged in groups with equal spacing about the central axis of the soil barrier plate (8).

6. The test tube for soil penetration detection according to claim 1, characterized in that: A fixed plug (10) is installed at the bottom end of the test tube (1), and a scale line (11) is fixedly provided on the front wall of the test tube (1).

7. The test tube for soil penetration detection according to claim 6, characterized in that: The fixing plug (10) is threadedly connected to the bottom end of the scale line (11), and the scale line (11) is provided with a plurality of groups of equally spaced fixed on the front wall of the test tube (1).

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