Soil sampling and permeability measuring integrated device

Abstract

The utility model provides a soil sampling and permeability measuring integrated device. The bottom of a girdling cylindrical cutter is of an open structure and communicates with an inner cavity of the girdling cylindrical cutter, and a vertical rod is fixedly arranged in the center of the top of the girdling cylindrical cutter; the water storage container is fixedly arranged on the vertical rod; the inner straw is accommodated in the water storage container; the handle is fixedly arranged at the top of the vertical rod; the outer suction pipe is connected with the inner cavity of the annular cutting cylindrical cutter and the inner suction pipe, and the on-off of the outer suction pipe is controlled through a suction pipe switch; the water pipe is connected with the inner cavity of the annular cutting cylindrical cutter and the water storage container, and the on-off of the water pipe is controlled through a water pipe switch; the air pipe is connected with the water storage container, and the on-off of the air pipe is controlled through an air pipe switch. The water path and the air path which can be controlled to be connected and disconnected are arranged between the water storage container and the girdling cylinder cutter, the water seepage amount is converted into the water absorption amount according to the negative pressure principle, and therefore the purpose that multiple times of measurement can be achieved through one-time water injection is achieved, more water is saved, measurement can be paused according to experiment requirements, and more flexible operability is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil detection, and in particular relates to an integrated device for soil sampling and permeability measurement. Background Art

[0002] The Chinese patent application number "202122646376.8" discloses an in-situ soil permeability coefficient detection device. Paragraph 0032 of its public text discloses "Inject clean water into the water injection cylinder 1 to a level slightly higher than the 0ml mark 9 of the water injection volume scale. When the water naturally seeps down to the 0ml mark, press the timer to record the start time of the test. When the water naturally seeps down to the 1500ml mark, press the timer again to record the end time of the test and read the penetration test time t." This detection device must be fully infiltrated after one injection, consumes a large amount of water, and the measurement process cannot be paused. Once a mistake is made, it can only be started over, which increases the inconvenience of outdoor use. Summary of the Invention

[0003] The purpose of the present invention is to provide an integrated soil sampling and permeability measurement device, which adopts a controllable water volume and negative pressure measurement method to achieve the purpose of multiple measurements.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a soil sampling and permeability measurement integrated device, comprising:

[0005] A circular cutting knife, the bottom of which is an open structure and communicates with its inner cavity, and a vertical rod is fixedly provided at the center of its top;

[0006] A water storage container with observable liquid level, the water storage container is fixedly arranged on the vertical rod;

[0007] an inner straw, the inner straw being received in the water storage container;

[0008] A handle, the handle being fixedly arranged on the top of the vertical rod;

[0009] An external suction pipe, the external suction pipe connecting the inner cavity of the circular cutting knife and the internal suction pipe, and the external suction pipe is controlled to be on and off by a suction pipe switch;

[0010] A water pipe, the water pipe connecting the inner cavity of the circular cutting knife and the water storage container, and the water pipe is controlled to be on and off by a water pipe switch;

[0011] An air pipe is connected to the water storage container and is controlled on and off by an air pipe switch.

[0012] Furthermore, a serrated structure is provided at the bottom of the circular cutting cylinder knife.

[0013] Furthermore, the outer wall of the circular cutting cylinder knife is provided with a first scale.

[0014] Furthermore, the water storage container is a transparent container or a metal container with a visible liquid level window, and a second scale is provided on the outer wall of the transparent container or the visible liquid level window.

[0015] Furthermore, the vertical rod is a rod body with a hollow structure, the inner cavity of which is connected to the inner cavity of the circular cutting cylinder knife, and a plug is provided on the top.

[0016] Furthermore, the outer suction pipe, water pipe and air pipe are all hoses, and the suction pipe switch, water pipe switch and air pipe switch are all pipe clamps.

[0017] Furthermore, the outer suction pipe, water pipe and air pipe are all hard pipes, and the suction pipe switch, water pipe switch and air pipe switch are all ball valves.

[0018] Furthermore, the volume of the water storage container is not less than twice the remaining volume of the inner cavity after sampling by the circular cutting knife.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the present invention sets a water channel and an air channel with controllable on and off between the water storage container and the circular cutting cylinder knife, and converts the water seepage into water absorption through the negative pressure principle, thereby achieving the purpose of multiple measurements with one water injection, saving more water, and being able to pause measurement according to experimental requirements, with more flexible operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural perspective diagram of embodiment 1 of the present invention;

[0021] Figure 2 for Figure 1 The structural front view of the embodiment 1 is shown;

[0022] Figure 3 for Figure 1 The structural cross-sectional view of the embodiment 1 after sampling is shown;

[0023] Figure 4 for Figure 1 The structure cross-sectional view of the embodiment 1 after water injection is shown;

[0024] Figure 5 for Figure 1 The structure cross-sectional view of the embodiment 1 after infiltration is shown;

[0025] Figure 6 This is a structural front view of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention. Example

[0027] like Figures 1 to 5 As shown, this embodiment discloses an integrated soil sampling and permeability measurement device, including: a circular cutting tube knife 1, a water storage container 3 for observing the liquid level, an inner suction pipe 4, a handle 5, an outer suction pipe 6, a water pipe 7 and an air pipe 8.

[0028] The circular cutting knife 1 is a cylindrical structure made of metal material with a diameter of 6-10 cm. Its bottom is open and connected to its inner cavity, and a vertical rod 2 is fixed in the center of its top. The function of the circular cutting knife 1 is to insert it into the soil to achieve soil sampling by rotary cutting. To control the sampling depth, the outer wall of the circular cutting knife 1 is provided with a first scale. The top surface of the circular cutting knife 1 is equipped with a water inlet connector 12 and an air inlet connector 11.

[0029] In order to more conveniently cut into the soil for sampling, as a preferred example, a serrated structure is provided at the bottom of the circular cutting cylinder 1.

[0030] To facilitate cleaning of the circular cutting knife 1, the vertical rod 2 is a hollow rod with an inner cavity connected to the inner cavity of the circular cutting knife 1. A plug is installed at the top of the vertical rod 2. The circular cutting knife 1 can be cleaned by passing water through the top of the vertical rod 2. During use, the top of the vertical rod 2 must be blocked with the plug to generate negative pressure in the inner cavity during penetration.

[0031] The water storage container 3 is fixedly mounted on the vertical rod 2. The water storage container 3 is an annular structure, with a central circular hole extending through the vertical rod 2 and sealed with glass glue at the contact point. A lid is provided on the top of the water storage container 3. A water outlet connector 13 is mounted on the bottom of the water storage container 3, and an air outlet connector 14 and a vent connector 15 are mounted on the lid. The water inlet connector 12, air inlet connector 11, water outlet connector 13, and vent connector 15 are all single-ended connectors, while the air outlet connector 14 is a double-ended connector. The water storage container 3 is a transparent acrylic container with a second scale mark on its outer wall.

[0032] The inner suction tube 4 is housed in the water storage container 3 and spirally wound around the outer circumference of the vertical rod 2. Its top end is connected to the inner end of the air outlet connector 14. The inner suction tube 4 draws water from the water storage container 3 under the negative pressure generated during infiltration, thereby lowering the liquid level. The inner diameter and length of the inner suction tube 4 are designed based on practical needs. After complete infiltration, the drawn water does not completely fill the inner suction tube 4, preventing it from entering the circular cutting cylinder 1 and affecting measurement.

[0033] There are two handles 5 , which are fixed on the top of the vertical rod 2 in a symmetrical manner.

[0034] One end of the outer suction pipe 6 is connected to the outer end of the air outlet joint 14, and the other end is connected to the air inlet joint 11, thereby connecting the inner cavity of the circular cutting cylinder knife 1 and the inner suction pipe 4. The outer suction pipe 6 is controlled to be on and off by the suction pipe switch 9.

[0035] One end of the water pipe 7 is connected to the water inlet joint 12, and the other end is connected to the water outlet joint 13, thereby connecting the inner cavity of the circular cutting cylinder knife 1 and the water storage container 3. The water pipe 7 is controlled to be on and off by the water pipe switch 10.

[0036] The air pipe 8 is connected to a ventilation joint 15 , which is controlled to be on or off by an air pipe switch 16 .

[0037] Specifically, the outer suction pipe 6, water pipe 7, and air pipe 8 are all rubber hoses, and the suction pipe switch 9, water pipe switch 10, and air pipe switch 16 are all pipe clamps. The clamps can be clamped onto the pipes to disconnect the water / air circuits, and removed to connect them. Alternatively, the outer suction pipe 6, water pipe 7, and air pipe 8 can be all PVC rigid tubes, and the suction pipe switch 9, water pipe switch 10, and air pipe switch 16 can be all ball valves.

[0038] As a preferred example, the volume of the water storage container 3 is not less than 2 times the residual volume of the inner cavity after sampling by the circular cutting cylinder knife 1. In this way, it can be ensured that there is still water in the water storage container 3 after the infiltration is completed, so as to ensure the accuracy of the measurement. Example

[0039] like Figure 6 As shown, the only difference between this embodiment and the first embodiment is that the water storage container 3 is a metal container with a visual liquid level window 3.1, and the visual liquid level window 3.1 is provided with a second scale.

[0040] The use process and principle of the present invention

[0041] like Figure 3 As shown, turn off the suction pipe switch 9, water pipe switch 10, and gas pipe switch 16. Then, hold the handle 5 and aim the circular cutting knife 1 at the ground. Insert it into the underground soil by rotating and pressing downward. The insertion depth is determined by the first scale. Open the lid of the water storage container 3, fill it with water, and then replace the lid.

[0042] like Figure 4As shown, at this point, the water pipe switch 10 and the air pipe switch 16 are turned on, and the water in the water storage container 3 is injected into the inner cavity. When the liquid level in the water storage container 3 drops to a certain height and stops falling, the water injection is completed, and the time t1 and the liquid level height H1 at this time are recorded. Then, the water pipe switch 10 is immediately closed and the suction pipe switch 9 and the air pipe switch 16 are turned on. At this time, as the water seeps into the soil, negative pressure is generated in the inner cavity, and the remaining water in the water storage container 3 is sucked into the inner suction pipe 4.

[0043] like Figure 5 As shown, when the liquid level in water storage container 3 drops to a certain height and stops falling, permeation ends, and the time t2 and liquid level height H2 at this time are recorded. The permeability can then be calculated based on t1, t2, H1, and H2. It should be noted that to improve accuracy, the entire process can be video recorded and then played back to determine the values ​​of t1, t2, H1, and H2.

[0044] It should be noted that the volume of water storage container 3 is at least 2N times the remaining volume of the inner cavity after sampling by the circular cutting knife 1, thus achieving the goal of single water injection and multiple measurements. The specific process is: after completing a permeation test, unscrew the plug, allowing air to enter the inner cavity to restore normal pressure, and the water in the inner suction tube 4 flows back into the water storage container 3. Then, close the plug and repeat the permeation test process.

[0045] After the permeability test, the device can be lifted up to take the soil out for other tests.

[0046] Anything not described in detail in the present invention is well known to those skilled in the art.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, a specific direction structure and operation. Therefore, they cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0048] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A soil sampling and permeability measurement integrated device, characterized by: include: A circular cutting cylinder knife (1), wherein the bottom of the circular cutting cylinder knife (1) is an open structure and communicates with its inner cavity, and a vertical rod (2) is fixedly provided at the center of the top thereof; A water storage container (3) capable of observing the liquid level, the water storage container (3) being fixedly arranged on the vertical rod (2); An inner suction tube (4), the inner suction tube (4) being received in the water storage container (3); A handle (5), the handle (5) being fixedly arranged on the top of the vertical rod (2); An outer suction tube (6), the outer suction tube (6) connecting the inner cavity of the circular cutting knife (1) and the inner suction tube (4), and the on-off control of the outer suction tube (6) is controlled by a suction tube switch (9); A water pipe (7), the water pipe (7) connecting the inner cavity of the circular cutting knife (1) and the water storage container (3), and the water pipe (7) is controlled to be on and off by a water pipe switch (10); An air pipe (8), the air pipe (8) is connected to the water storage container (3), and its on / off is controlled by an air pipe switch (16).

2. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The bottom of the circular cutting cylinder knife (1) is provided with a sawtooth structure.

3. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The outer wall of the circular cutting cylinder knife (1) is provided with a first scale.

4. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The water storage container (3) is a transparent container or a metal container with a visible liquid level window (3.1); a second scale is provided on the outer wall of the transparent container or the visible liquid level window (3.1).

5. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The vertical rod (2) is a rod body with a hollow structure, the inner cavity of which is communicated with the inner cavity of the circular cutting cylinder knife (1), and a plug is provided on the top.

6. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The outer suction pipe (6), water pipe (7) and air pipe (8) are all hoses, and the suction pipe switch (9), water pipe switch (10) and air pipe switch (16) are all pipe clamps.

7. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The outer suction pipe (6), water pipe (7) and air pipe (8) are all hard pipes, and the suction pipe switch (9), water pipe switch (10) and air pipe switch (16) are all ball valves.

8. The soil sampling and permeability measurement integrated device according to claim 1, characterized in that: The volume of the water storage container (3) is not less than twice the remaining volume of the inner cavity of the circular cutting knife (1) after sampling.

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