A sampling device for detecting saline soil

Abstract

The utility model relates to sampling device technical field, concretely to a kind of sampling device for saline soil detection, including sleeve rod, inner rod that is slidably connected in the sleeve rod, sampling handle fixed on the sleeve rod, sampling cylinder fixed in the bottom end of the sleeve rod, sample disc that is slidably connected in the sampling cylinder, the left and right sides of the sleeve rod are provided with sliding slot, sliding connection has slide in sliding slot, the inner end of the slide is fixed on inner rod, outer end is provided with sample disc pedal, the bottom end of the slide is fixedly connected sample disc;The utility model can automatically push out sample after viscous saline soil sampling, it is more convenient to use, also can avoid the damage caused to sample due to knock sampling cylinder or by means of vibration device vibration, ensure the accuracy of viscous saline soil subsequent detection result.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically a sampling device for testing saline soil. Background Technology

[0002] In the process of improving clayey saline soil, the scientific nature of clayey saline soil sampling directly affects the judgment of soil salinity and the formulation of improvement plans. In order to obtain clayey saline soil samples, it is necessary to use a sampling device. For example, the existing Chinese patent with authorization announcement number CN212931977U discloses a soil sampling device for soil testing and remediation, including a sampling device body. The bottom of the sampling device body is provided with a drill bit that works with the sampling device body. The top of the drill bit is fixedly connected to a vertical block. The bottom of the sampling device body is fixedly connected to a support block. The bottom of the support block penetrates into the interior of the vertical block. The bottom of the surface of the sampling device body is fixedly connected to a fixing block. The bottom of the surface of the sampling device body is fitted with a sleeve, which is located at the bottom of the fixing block.

[0003] However, in actual use, the above sampling device still has the following shortcomings: Since clayey saline soil has a certain viscosity, after sampling, the sample is easy to get stuck in the sampling tube 4. The operator needs to knock on the side wall of the sampling tube or use a vibration device to make the sample slide out of the sampling tube. It is not convenient to use. Moreover, when the operator knocks on the sampling tube or uses a vibration device to vibrate, it is easy to damage the sample in the sampling tube, which affects the accuracy of the subsequent test results of clayey saline soil. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a sampling device for testing saline soil. This device can automatically eject the sample after sampling clayey saline soil, making it more convenient to use. It also avoids damage to the sample caused by hitting the sampling tube or vibrating it with a vibration device, thus ensuring the accuracy of subsequent test results for clayey saline soil.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sampling device for testing saline soil includes a sleeve rod, an inner rod slidably connected inside the sleeve rod, a sampling handle fixed on the sleeve rod, a sampling cylinder fixed at the bottom end of the sleeve rod, and a sample removal disc slidably connected inside the sampling cylinder. The sleeve rod has grooves on its left and right sides, and a sliding rod is slidably connected in the grooves. The inner end of the sliding rod is fixed to the inner rod, and the outer end is provided with a sample removal pedal. The bottom end of the sliding rod is fixedly connected to the sample removal disc.

[0007] Furthermore, a spring is fitted onto the inner rod, with the beginning and end of the spring connected to the top of the sampling cylinder and the upper surface of the sample removal disc, respectively.

[0008] Furthermore, four arc-shaped grooves are provided on the inner wall of the sampling tube. The arc-shaped grooves are arranged along the axial direction of the sampling tube. Arc-shaped sample release plates are slidably connected in the arc-shaped grooves. The top of the arc-shaped sample release plates is fixed on the sample release plate.

[0009] Furthermore, the four arc-shaped sample release pieces are joined together to form a cylindrical demolding frame, the inner diameter of which is the same as the inner diameter of the sampling cylinder.

[0010] Furthermore, the arc-shaped sample removal plate and the sample removal disk are both integrally molded from polytetrafluoroethylene, as is the sampling cylinder.

[0011] Furthermore, the slide bar is positioned near the center of the inner rod.

[0012] Furthermore, when the spring is in an unforced state, the distance between the bottom of the sample removal plate and the bottom of the sampling cylinder is 40cm.

[0013] The beneficial effects of this utility model are:

[0014] In practical applications, when using the sampling tube, align it with the sampling point, hold the sampling handle and press down to insert the sampling tube into the clayey saline soil for sampling. After sampling, hold the sampling handle to pull the sampling tube out of the clayey saline soil, step on the sample release pedal, and the sample release pedal slides down the slide groove through the slide rod, driving the inner rod to slide down the sleeve rod, so that the sample release plate pushes up and down against the soil sample, pushing the soil sample out from the bottom of the sampling tube. This utility model can automatically push out the sample after sampling the clayey saline soil, which is more convenient to use and can also avoid damage to the sample caused by hitting the sampling tube or vibrating with a vibration device, ensuring the accuracy of subsequent test results of the clayey saline soil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a bottom view of the present invention;

[0017] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0018] Reference numerals: sleeve rod 1; slide groove 11; inner rod 2; sampling handle 3; sampling cylinder 4; sample removal plate 5; slide rod 6; sample removal pedal 7; spring 8; arc-shaped sample removal plate 9. Detailed Implementation

[0019] like Figure 1 , Figure 2 and Figure 3As shown, a sampling device for testing saline soil includes a sleeve rod 1, an inner rod 2 slidably connected inside the sleeve rod 1, a sampling handle 3 fixed on the sleeve rod 1, a sampling cylinder 4 fixed at the bottom end of the sleeve rod 1, and a sample removal plate 5 slidably connected inside the sampling cylinder 4. The sleeve rod 1 has grooves 11 on its left and right sides, and a sliding rod 6 is slidably connected inside the grooves 11. The inner end of the sliding rod 6 is fixed on the inner rod 2, and the outer end is provided with a sample removal pedal 7. The bottom end of the sliding rod 6 is fixedly connected to the sample removal plate 5.

[0020] In use, align the sampling tube 4 with the sampling point, hold the sampling handle 3 and press down to press the sampling tube 4 into the clayey saline soil to take a sample. After sampling, hold the sampling handle 3 to pull the sampling tube 4 out of the clayey saline soil, step on the sample removal pedal 7, and the sample removal pedal 7 slides down the slide groove 11 through the slide rod 6, driving the inner rod 2 to slide down the sleeve rod 1, so that the sample removal disc 5 pushes up and down against the soil sample, pushing the soil sample out from the bottom of the sampling tube 4. This utility model can automatically push out the sample after the clayey saline soil is sampled, which is more convenient to use and can also avoid damage to the sample caused by hitting the sampling tube 4 or vibrating with the help of a vibration device, ensuring the accuracy of subsequent test results of clayey saline soil.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a spring 8 is sleeved on the inner rod 2. The beginning and end of the spring 8 are respectively connected to the top of the sampling cylinder 4 and the upper surface of the sample removal plate 5. In this embodiment, during the sample removal process of stepping on the sample removal pedal 7, the spring 8 is stretched. After the soil sample is pushed out of the sampling cylinder 4, the sample removal plate 5 is reset by the restoring force of the spring 8.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, four arc-shaped grooves are provided on the inner wall of the sampling cylinder 4. The arc-shaped grooves are arranged along the axial direction of the sampling cylinder 4. Arc-shaped sample release plates 9 are slidably connected in the arc-shaped grooves. The top of the arc-shaped sample release plates 9 is fixed on the sample release plate 5. In this embodiment, during the sample release process of stepping on the sample release pedal 7, the contact area between the soil sample and the inner wall of the sampling cylinder 4 is reduced by the arc-shaped sample release plates 9, making it easier for the soil sample to be pushed out of the sampling cylinder 4.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the four arc-shaped demolding plates 9 surround each other to form a cylindrical demolding frame. The inner diameter of the cylindrical demolding frame is the same as the inner diameter of the sampling cylinder 4. In this embodiment, when the inner diameter of the cylindrical demolding frame is the same as the inner diameter of the sampling cylinder 4, the process of inserting the sampling cylinder 4 and the soil sample entering the sampling cylinder 4 is smoother.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the arc-shaped sample removal plate 9 and the sample removal disk 5 are both integrally molded from polytetrafluoroethylene (PTFE), and the sampling cylinder 4; in this embodiment, the arc-shaped sample removal plate 9 and the sample removal disk 5 made of PTFE have good anti-sticking effect and good acid and alkali resistance; the integral molding of the arc-shaped sample removal plate 9 and the sample removal disk 5 results in lower production costs.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the slide bar 6 is positioned near the middle of the inner rod 2; in this embodiment, when the slide bar 6 is positioned near the middle of the inner rod 2, sample removal is more convenient.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, when the spring 8 is in a stress-free state, the distance between the bottom end of the detachment plate 5 and the bottom end of the sampling cylinder 4 is 40cm. In this embodiment, since the tillage layer depth of conventional crops is 0-20cm and the depth of the deep salt migration zone is 30-40cm, when the distance between the bottom end of the detachment plate 5 and the bottom end of the sampling cylinder 4 is 40cm, this application can be applied to the detection and sampling of various clayey saline soils with severe salinization, and has better applicability.

[0027] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A sampling device for detecting saline soil, characterized in that: Includes a sleeve rod (1), an inner rod (2) slidably connected inside the sleeve rod (1), a sampling handle (3) fixed on the sleeve rod (1), a sampling cylinder (4) fixed at the bottom end of the sleeve rod (1), and a sample removal plate (5) slidably connected inside the sampling cylinder (4). The sleeve rod (1) has grooves (11) on its left and right sides, and a sliding rod (6) is slidably connected inside the grooves (11). The inner end of the sliding rod (6) is fixed on the inner rod (2), and the outer end is provided with a sample removal pedal (7). The bottom end of the sliding rod (6) is fixedly connected to the sample removal plate (5).

2. The sampling device for detecting saline soil according to claim 1, characterized in that, A spring (8) is sleeved on the inner rod (2), and the beginning and end of the spring (8) are respectively connected to the top of the sampling cylinder (4) and the upper surface of the sample removal plate (5).

3. The sampling device for detecting saline soil according to claim 1, characterized in that, The inner wall of the sampling cylinder (4) is provided with four arc-shaped grooves. The arc-shaped grooves are arranged along the axial direction of the sampling cylinder (4). Arc-shaped sample release plates (9) are slidably connected in the arc-shaped grooves. The top of the arc-shaped sample release plates (9) is fixed on the sample release plate (5).

4. The sampling device for detecting saline soil according to claim 3, characterized in that, The four arc-shaped demolding pieces (9) together form a cylindrical demolding frame, the inner diameter of which is the same as the inner diameter of the sampling cylinder (4).

5. A sampling device for detecting saline soil according to claim 3, characterized in that, The arc-shaped sample removal plate (9) and the sample removal disk (5) are both made of polytetrafluoroethylene in one piece, and the sampling cylinder (4) is also made of polytetrafluoroethylene in one piece.

6. A sampling device for detecting saline soil according to claim 1, characterized in that, The slide bar (6) is located near the middle of the inner rod (2).

7. A sampling device for detecting saline soil according to claim 2, characterized in that, When the spring (8) is not under force, the distance between the bottom of the sample removal plate (5) and the bottom of the sampling cylinder (4) is 40cm.

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