Soil testing sampling device

Abstract

The application discloses a soil detection sampling device, which comprises a drill cylinder, an inner cylinder arranged in the drill cylinder, the drill cylinder and the inner cylinder are both rotationally installed on a sampling support, a discharging channel is arranged between the inner cylinder and the drill cylinder, a spiral blade is arranged on the outer side of the inner cylinder, the top of the inner cylinder protrudes from the top of the drill cylinder, the drill cylinder is driven to rotate by a first driving motor, the inner cylinder is driven to rotate by a second driving motor, a discharging box is arranged on the sampling support, a discharging port is arranged on the drill cylinder and communicates with the discharging channel, the discharging port is arranged in the discharging box, an opening is arranged at the bottom of the inner cylinder, and a closing mechanism is arranged at the opening. Before reaching the sampling depth, the closing mechanism is closed, and the discharging channel can discharge the soil at the top; after reaching the sampling depth, the closing mechanism is opened, so that the sampled soil can enter the sampling cylinder, the discharging channel can discharge the soil in contact with the drill cylinder, the resistance can be reduced, and the mixing of the soil can be avoided.

Description

Technical Field

[0001] This invention relates to the technical field of soil testing, and in particular to the technical field of soil testing sampling devices. Background Technology

[0002] Soil is an important component of the Earth's ecosystem and is closely related to the quality of agricultural products, human health, and the ecological environment. However, with the development of industrialization and urbanization, as well as the extensive use of chemical fertilizers and pesticides in agricultural production, soil pollution problems are becoming increasingly serious, such as excessive heavy metals and organic pollution. Accurate detection of various indicators in soil is of great significance for assessing soil quality, ensuring the safety of agricultural products, preventing and controlling soil pollution, and promoting ecological and environmental protection.

[0003] Patent document CN220322772U discloses a soil sampling device for soil acidity testing. However, this device cannot automatically remove excess soil from the top during insertion, which affects the accuracy of the sampling.

[0004] The patent document with publication number CN221764929U discloses a surface soil sampling device for soil testing. The device uses a lifting frame to lift and lower the sampling bucket for sampling. After the sampling is completed, the sampling bucket needs to be removed before sampling can be performed, which makes the sampling process rather cumbersome. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a soil testing and sampling device that can solve the above problems.

[0006] To achieve the above objectives, the present invention proposes a soil testing and sampling device, comprising a drill cylinder, an inner cylinder inside the drill cylinder, both the drill cylinder and the inner cylinder being rotatably mounted on a sampling support, a discharge channel being provided between the inner cylinder and the drill cylinder, a spiral blade being provided on the outer side of the inner cylinder, and the top of the inner cylinder protruding from the top of the drill cylinder, the drill cylinder being driven to rotate by a first drive motor, the inner cylinder being driven to rotate by a second drive motor, a discharge box being provided on the sampling support, a discharge port being provided on the drill cylinder communicating with the discharge channel, the discharge port being located in the discharge box, an opening being provided at the bottom of the inner cylinder, and a closing mechanism being provided at the opening.

[0007] Preferably, the top of the drill barrel is provided with a first gear ring, which meshes with a first drive gear and is connected to a first drive motor. The top of the inner cylinder is provided with a second gear ring, which meshes with a second drive gear and is connected to a second drive motor. Both the first drive motor and the second drive motor are mounted on the sampling bracket.

[0008] Preferably, the discharge box is provided with a discharge cavity, which is rotatably installed on the outside of the drill barrel. A discharge screw is rotatably installed in the discharge box, and the discharge screw is connected to a discharge motor. The bottom of the discharge box is provided with a discharge outlet.

[0009] Preferably, the closing mechanism includes a mounting ring. A vertical mounting ring groove is formed on the inner wall of the inner cylinder. The mounting ring is slidably installed in the mounting ring groove. Several closing claws are rotatably mounted on the inner side of the mounting ring via a rotating shaft. A torsion spring is provided at the rotating shaft. In a natural state, the closing claws automatically close together to seal the bottom of the mounting ring. A limiting ring is provided above the mounting ring. A connecting part is provided at the top of the limiting ring. Several sliding rods are provided at the top of the mounting ring. The connecting part is slidably installed on the sliding rods. A limiting groove is provided at the end of the mounting ring groove near the opening. When the limiting ring slides to the bottom of the sliding rod, the closing claws rotate to a vertical state. The outer side of the limiting ring abuts against the inner side of the closing claws, and the outer side of the closing claws abuts against the limiting groove. A sampling cylinder is connected to the top of the limiting ring. The top of the sampling cylinder protrudes from the top of the inner cylinder. A retaining ring is provided at the top of the sampling cylinder. The retaining ring is mounted on a lifting bracket, and the lifting bracket is slidably mounted on a lifting guide rail.

[0010] Preferably, the closing claw forms a cone-shaped head that is larger at the top and smaller at the bottom when closed.

[0011] Preferably, the sampling tube has several sampling ports, and each sampling port is provided with a cover plate.

[0012] Preferably, the sampling tube and the inner tube are fitted with a clearance.

[0013] Preferably, a magnet is provided at the bottom of the mounting ring groove, and the bottom of the mounting ring is magnetically attracted to the magnet.

[0014] Preferably, the lifting guide rail is marked with graduations.

[0015] Preferably, the sampling bracket is connected to a lifting mechanism, which is mounted on the base.

[0016] Preferably, the lifting mechanism is a drive screw, which is rotatably mounted on the base. The base is provided with a fixed frame, and a lifting motor is mounted on the fixed frame. The lifting motor is connected to the drive screw. The sampling bracket is provided with a threaded hole, and the drive screw is threadedly installed into the threaded hole. The base is provided with a plurality of positioning posts, and the sampling bracket is provided with positioning holes that match the positioning posts. The positioning holes are fitted onto the positioning posts.

[0017] The beneficial effects of this invention are as follows: By setting a discharge channel between the inner cylinder and the drill cylinder, and setting a closing mechanism at the bottom of the inner cylinder, the closing mechanism closes before reaching the sampling depth, allowing the discharge channel to discharge the top soil; after reaching the sampling depth, the closing mechanism opens, allowing the sampled soil to enter the sampling cylinder, and the discharge channel to discharge the soil in contact with the drill cylinder. This reduces resistance, avoids mixing, and prevents rust from the drill cylinder from contaminating the soil. The sampling cylinder can be removed from the inner cylinder. When removed, the bottom of the closing mechanism automatically closes. After the sampling cylinder is lifted to a certain height by the lifting guide rail, it can be sampled through the sampling port without disassembly, which is very convenient.

[0018] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the base of the present invention;

[0021] Figure 3 This is a schematic diagram of the discharge box of the present invention;

[0022] Figure 4 This is a schematic diagram of the closed state of the closing mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the closure mechanism of the present invention in the open state.

[0024] In the diagram: 1. Drill barrel; 2. Sampling bracket; 3. Inner cylinder; 4. Discharge box; 5. Closing mechanism; 6. Limiting ring; 7. Sampling cylinder; 8. Base; 11. Discharge port; 12. First gear ring; 13. First drive gear; 14. First drive motor; 31. Spiral blade; 32. Second gear ring; 33. Second drive gear; 34. Second drive motor; 35. Opening; 41. Discharge chamber; 42. Discharge screw; 43. Discharge outlet; 51. Mounting ring; 52. Mounting ring groove; 53. Closing claw; 54. Slide rod; 55. Limiting groove; 61. Connecting part; 71. Snap ring; 72. Lifting bracket; 73. Lifting guide rail; 74. Sampling port; 81. Drive screw; 82. Fixing frame; 83. Positioning column. Detailed Implementation

[0025] See Figures 1 to 5A soil testing and sampling device includes a drill cylinder 1, an inner cylinder 3 inside the drill cylinder 1, and both the drill cylinder 1 and the inner cylinder 3 are rotatably mounted on a sampling support 2. A discharge channel is provided between the inner cylinder 3 and the drill cylinder 1. A spiral blade 31 is provided on the outer side of the inner cylinder 3. The top of the inner cylinder 3 protrudes from the top of the drill cylinder 1. The drill cylinder 1 is driven to rotate by a first drive motor 14, and the inner cylinder 3 is driven to rotate by a second drive motor 34. A discharge box 4 is provided on the sampling support 2. A discharge port 11 connected to the discharge channel is opened on the drill cylinder 1. The discharge port 11 is located in the discharge box 4. An opening 35 is provided at the bottom of the inner cylinder 3, and a closing mechanism 5 is provided at the opening 35.

[0026] The drill barrel is made of metal, while the inner cylinder and sampling tube are made of stable plastic. Soil in contact with the drill barrel is discharged through the discharge channel, reducing the impact of drill barrel rust on the soil and ensuring the accuracy of the test.

[0027] The top of the drill barrel 1 is provided with a first gear ring 12, which meshes with a first drive gear 13. The first drive gear 13 is connected to a first drive motor 14. The top of the inner cylinder 3 is provided with a second gear ring 32, which meshes with a second drive gear 33. The second drive gear 33 is connected to a second drive motor 34. The first drive motor 14 and the second drive motor 34 are both mounted on the sampling bracket 2.

[0028] The discharge box 4 is provided with a discharge cavity 41, which is rotatably installed on the outside of the drill barrel 1. A discharge screw 42 is rotatably installed in the discharge box 4, and the discharge screw 42 is connected to a discharge motor. The bottom of the discharge box 4 is provided with a discharge outlet 43.

[0029] The closing mechanism 5 includes a mounting ring 51. A vertical mounting ring groove 52 is formed on the inner wall of the inner cylinder 3. The mounting ring 51 is slidably installed in the mounting ring groove 52. Several closing claws 53 are rotatably mounted on the inner side of the mounting ring 51 via a rotating shaft. A torsion spring is provided at the rotating shaft. In a natural state, the closing claws 53 automatically close together, sealing the bottom of the mounting ring 51. A limiting ring 6 is provided above the mounting ring 51. A connecting part 61 is provided at the top of the limiting ring 6. Several sliding rods 54 are provided at the top of the mounting ring 51. The connecting part 61 is slidably mounted on the sliding rods 54. 1. The mounting ring groove 52 is provided with a limiting groove 55 at one end near the opening 35. When the limiting ring 6 slides to the bottom of the slide rod 54, the closing claw 53 overcomes the elastic force and rotates to a vertical state. The outer side of the limiting ring 6 is in limiting contact with the inner side of the closing claw 53, and the outer side of the closing claw 53 is in limiting contact with the limiting groove 55. The top of the limiting ring 6 is connected to a sampling cylinder 7. The top of the sampling cylinder 7 protrudes from the top of the inner cylinder 3. The top of the sampling cylinder 7 is provided with a retaining ring 71. The retaining ring 71 is installed on the lifting bracket 72. The lifting bracket 72 is slidably installed on the lifting guide rail 73.

[0030] When the closing claw 53 is closed, it forms a cone-shaped head that is larger at the top and smaller at the bottom.

[0031] When closed, the cone-shaped structure guides the soil into the outer discharge channel.

[0032] The bottom of the drill barrel is equipped with drill teeth.

[0033] The sampling cylinder 7 has several sampling ports 74, and each sampling port 74 is provided with a cover plate. The sampling cylinder 7 and the inner cylinder 3 are fitted with a clearance fit.

[0034] The bottom of the mounting ring groove 52 is provided with a magnet, and the bottom of the mounting ring 51 is magnetically attracted to the magnet.

[0035] The lifting guide rail 73 is marked with graduations.

[0036] The sampling bracket 2 is connected to a lifting mechanism, which is mounted on the base 8.

[0037] The lifting mechanism is a drive screw 81, which is rotatably mounted on the base 8. The base 8 is provided with a fixing frame 82, and a lifting motor is mounted on the fixing frame 82. The lifting motor is connected to the drive screw 81. The sampling bracket 2 is provided with a threaded hole, and the drive screw 81 is threadedly installed into the threaded hole. The base 8 is provided with a plurality of positioning posts 83, and the sampling bracket 2 is provided with positioning holes that match the positioning posts 83. The positioning holes are fitted onto the positioning posts 83.

[0038] The base is equipped with rollers at its bottom and has clearance grooves on its surface for the drill barrel to move.

[0039] Working process of this invention:

[0040] During operation, the lifting mechanism drives the sampling bracket downwards to insert the drill cylinder into the soil. A first motor drives the drill cylinder to rotate, and a second motor drives the inner cylinder to rotate. Before reaching the sampling depth, the mounting ring is at the bottom of the mounting ring groove, and the limiting ring is above the closing claw but not in contact with it. The closing claw is in a closed state, preventing soil from entering the sampling cylinder. Soil is discharged through the discharge channel and enters the discharge box, where it is discharged via the discharge screw. After reaching the sampling depth, the lifting guide rail drives the sampling cylinder downwards. The limiting ring at the bottom of the sampling cylinder inserts into the closing claw, causing the closing claw to rotate and open until it reaches a vertical position. After positioning, the sampling bracket continues to move downwards via the limiting groove to begin sampling. Soil enters the sampling cylinder, while soil between the drill cylinder and the inner cylinder continues to be discharged through the discharge channel, reducing forward resistance and preventing soil in contact with the drill cylinder from being collected. This also avoids material mixing and improves sampling accuracy. After sampling, the sampling cylinder is driven upwards via the lifting guide rail. The limiting ring first moves upwards relative to the mounting ring, preventing it from contacting the closing claw. Once the closing claw is no longer under force, it automatically closes. Then, the sampling cylinder continues to move upwards, removing it from the inner cylinder. After the sampling cylinder reaches the designated height, sampling can be performed through the sampling port, which is very convenient.

[0041] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A soil testing and sampling device, characterized in that: The system includes a drill cylinder (1), an inner cylinder (3) inside the drill cylinder (1), and both the drill cylinder (1) and the inner cylinder (3) are rotatably mounted on a sampling bracket (2). A discharge channel is provided between the inner cylinder (3) and the drill cylinder (1). A spiral blade (31) is provided on the outer side of the inner cylinder (3). The top of the inner cylinder (3) protrudes from the top of the drill cylinder (1). The drill cylinder (1) is driven to rotate by a first drive motor (14), and the inner cylinder (3) is driven to rotate by a second drive motor (34). A discharge box (4) is provided on the sampling bracket (2), and a discharge port (11) connected to the discharge channel is provided on the drill cylinder (1). The feed inlet (11) is located in the discharge box (4). The bottom of the inner cylinder (3) is provided with an opening (35), and a closing mechanism (5) is provided at the opening (35). The closing mechanism (5) includes an installation ring (51). A vertical installation ring groove (52) is provided on the inner wall of the inner cylinder (3). The installation ring (51) is slidably installed in the installation ring groove (52). Several closing claws (53) are rotatably installed on the inner side of the installation ring (51) through a rotating shaft. A torsion spring is provided at the rotating shaft. In a natural state, the closing claws (53) automatically close together to seal the bottom of the installation ring (51). A limiting ring is provided above the installation ring (51). (6) The top of the limiting ring (6) is provided with a connecting part (61), and the top of the mounting ring (51) is provided with several sliding rods (54). The connecting part (61) is slidably mounted on the sliding rods (54). The mounting ring groove (52) is provided with a limiting groove (55) at one end near the opening (35). When the limiting ring (6) slides to the bottom of the sliding rod (54), the closing claw (53) rotates to a vertical state. The outer side of the limiting ring (6) and the inner side of the closing claw (53) are mutually limiting and abutting. The outer side of the closing claw (53) and the limiting groove (55) are mutually limiting and abutting. The top of the limiting ring (6) is connected to a sampling cylinder (7). The top of the sampling cylinder (7) protrudes from the top of the inner cylinder (3). The top of the sampling cylinder (7) is provided with a retaining ring (71). The retaining ring (71) is installed on the lifting bracket (72). The lifting bracket (72) is slidably installed on the lifting guide rail (73). When the closing claw (53) is closed, it forms a cone-shaped head that is larger at the top and smaller at the bottom. Before reaching the sampling depth, the mounting ring (51) is located at the bottom of the mounting ring groove (52), and the limiting ring (6) is located above the closing claw (53) and does not contact the closing claw (53). The closing claw (53) is in a closed state, and the soil cannot enter the sampling cylinder (7). It is discharged from the discharge channel, and the discharged soil enters the discharge box (4).After reaching the sampling depth, the sampling cylinder (7) is driven downward by the lifting guide rail (73). The limiting ring (6) at the bottom of the sampling cylinder (7) is inserted into the closing claw (53), causing the closing claw (53) to rotate and open. After the closing claw (53) rotates to the vertical position, it is limited by the limiting groove (55). The sampling bracket (2) continues to move downward and begins sampling. Soil will enter the sampling cylinder (7). Soil between the drill cylinder (1) and the inner cylinder (3) continues to be discharged from the discharge channel. After sampling is completed, the sampling cylinder (7) is driven upward by the lifting guide rail (73). The limiting ring (6) first moves upward relative to the mounting ring (51) so that the limiting ring (6) does not contact the closing claw (53). The closing claw (53) closes automatically after being free of force. Then the sampling cylinder (7) continues to move upward and is taken out of the inner cylinder (3).

2. The soil testing and sampling device as described in claim 1, characterized in that: The top of the drill barrel (1) is provided with a first gear ring (12), which meshes with a first drive gear (13). The first drive gear (13) is connected to a first drive motor (14). The top of the inner cylinder (3) is provided with a second gear ring (32), which meshes with a second drive gear (33). The second drive gear (33) is connected to a second drive motor (34). The first drive motor (14) and the second drive motor (34) are both mounted on the sampling bracket (2).

3. The soil testing and sampling device as described in claim 1, characterized in that: The discharge box (4) is provided with a discharge cavity (41), which is rotatably installed on the outside of the drill barrel (1). A discharge screw (42) is rotatably installed in the discharge box (4), which is connected to a discharge motor. The bottom of the discharge box (4) is provided with a discharge outlet (43).

4. The soil testing and sampling device as described in claim 1, characterized in that: The sampling tube (7) has several sampling ports (74), and the sampling ports (74) are covered with covers. The sampling tube (7) and the inner tube (3) are fitted with a clearance.

5. The soil testing and sampling device as described in claim 1, characterized in that: The bottom of the mounting ring groove (52) is provided with a magnet, and the bottom of the mounting ring (51) is magnetically attracted to the magnet.

6. The soil testing and sampling device as described in claim 1, characterized in that: The lifting guide rail (73) is marked with graduations.

7. The soil testing and sampling device as described in claim 1, characterized in that: The sampling bracket (2) is connected to a lifting mechanism, which is installed on the base (8).

8. The soil testing and sampling device as described in claim 7, characterized in that: The lifting mechanism is a drive screw (81), which is rotatably mounted on the base (8). The base (8) is provided with a fixing frame (82), and a lifting motor is installed on the fixing frame (82). The lifting motor is connected to the drive screw (81). The sampling bracket (2) is provided with a threaded hole, and the drive screw (81) is threadedly installed in the threaded hole. The base (8) is provided with a plurality of positioning posts (83), and the sampling bracket (2) is provided with positioning holes that match the positioning posts (83). The positioning holes are fitted onto the positioning posts (83).

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