Farmland non-point source polluted soil sampling device

Abstract

The utility model belongs to the technical field of sampling devices, and discloses a farmland non-point source contaminated soil sampling device which comprises a sampling pipe and a handle, two symmetrically-arranged rotating shafts are horizontally and rotatably arranged on the lower side of the sampling pipe, semicircular plates are arranged on the rotating shafts, the two ends of each rotating shaft penetrate through the sampling pipe, and two adjusting assemblies are symmetrically arranged on the sampling pipe; the adjusting assembly comprises gears arranged at the ends of the rotating shafts in a sleeving mode, the gears on the two rotating shafts are meshed, two racks are arranged on the outer wall of the sampling pipe in a sliding mode, teeth of the two racks are opposite, the two racks are meshed with the two gears respectively, a connecting rod is arranged at the upper ends of the two racks jointly, and a control rod is arranged on the connecting rod. The upper side of the sampling pipe is slidably sleeved with a control ring, and the upper ends of the two control rods are connected with the control ring. The two semicircular plates are adjusted to be in a vertical state, and the soil can enter the sampling pipe. The two semicircular plates are in a horizontal state and are coplanar, the lower end of the sampling pipe is closed, soil cannot fall out of the sampling pipe, and the sampling effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling device technical field, especially in the farmland non -point source pollution soil sampling device. BACKGROUND

[0002] The agricultural non -point source pollution is the nitrogen, phosphorus, organic matter and so on nutrient that the chemical input such as chemical fertilizer, pesticide, mulching film and so on in the agricultural production process is not reasonable use, and livestock and poultry aquaculture waste, crop straw and so on are not handled in time or improperly, is produced, under the common drive of rainfall and topography, with surface, underground runoff and soil erosion as carrier, excessive accumulation in soil or into receiving water body, causes the pollution to ecological environment. In the monitoring and evaluation of agricultural non -point source pollution, soil sampling needs to be carried out in farmland, and the residual pollutants in soil are detected.

[0003] In the Chinese utility model patent with the publication number CN220872128U, a kind of farmland soil sampling device is disclosed, including sampling cylinder, including through slot plate, the both sides of the through slot plate are equipped with the side plate of opposite arrangement, the side plate between is rotatably provided with supporting leg, the supporting leg on both sides is rotatably provided with back type plate, the back type plate one side is fixedly connected with treading plate, the fixed plate is fixedly connected in the through slot plate, the fixed plate is screw-connected with the screw rod of sampling cylinder fixed connection in, rotating supporting leg will treading plate be placed in sampling soil, then user's both feet are respectively treading two sides treading plate, again rotating screw rod uses sampling cylinder to sample soil.

[0004] For the related technology in the above, the inventor believes that there are the following defects: the above device when sampling soil, by sampling cylinder inserts into soil, so that soil enters the inside of sampling cylinder, then sampling cylinder rises and brings out mud, however when collecting relatively soft, dry mud, the adhesion of mud in sampling cylinder is not enough, leading to when sampling cylinder rises, mud falls off from the bottom of sampling cylinder, so that sampling effect is poor. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a kind of farmland non -point source pollution soil sampling device.

[0006] The above technical purpose of the utility model is realized through the following technical scheme: a farmland non-point source pollution soil sampling device, including a sampling pipe, the sampling pipe upper end is provided with a handle, the sampling pipe lower side is horizontally rotationally provided with two symmetrical rotation shafts, the rotation shafts are provided with semicircular plates, the diameter of the semicircular plate is consistent with the inner diameter of the sampling pipe, the rotation shafts both ends all pass through the sampling pipe, the sampling pipe is symmetrically provided with two adjusting assemblies for driving two rotation shafts synchronous reverse rotation, the adjusting assembly includes a gear sleeved on the rotation shaft end, the gears on the two rotation shafts are engaged, the sampling pipe outer wall is slidably provided with two racks, the teeth of the two racks are opposite, the two racks are respectively engaged with two gears, the two racks upper ends are commonly provided with a connecting rod, the connecting rod is provided with a control rod, the sampling pipe upper side is slidably sleeved with a control ring, the two control rods upper ends are connected with the control ring.

[0007] By adopting the above technical scheme, the sampling pipe, handle, semicircular plate and adjusting assembly are arranged, when soil sampling, the control ring is first slid upward to drive the two control rods to move upward, thereby driving the connecting rod and rack to move upward. The upward movement of the rack drives the two gears to synchronously and reversely rotate, thereby driving the rotation shaft and semicircular plate to rotate, and the semicircular plate is adjusted to the vertical state. At this time, the worker controls the handle to stab the sampling pipe into the soil, so that the soil enters the inside of the sampling pipe. Then the worker pulls up the handle upward, and simultaneously slides the control ring downward to drive the two control rods to move downward, thereby driving the connecting rod and rack to move downward, and driving the gear, rotation shaft and semicircular plate to rotate, so that the two semicircular plates are in the horizontal state and the plate surfaces are coplanar. The lower end of the sampling pipe is closed to avoid the soil in the sampling pipe from falling out of the sampling pipe when the worker pulls up the handle and the sampling pipe, and the sampling effect is good.

[0008] Further, the sampling pipe is fixedly sleeved with a fixing ring on the upper side of the control ring, a compression spring is sleeved on the pipe between the fixing ring and the control ring, a threaded hole is horizontally formed in the control ring, a threaded rod is spirally arranged in the threaded hole, a rotating handle is arranged on the end of the threaded rod away from the sampling pipe, a fixing hole is formed in the sampling pipe, and when the two semicircular plates are vertically upward, the end of the threaded rod is located in the fixing hole to fix the position of the semicircular plate.

[0009] By adopting the above technical solution, a fixing ring, compression spring, threaded rod, and rotating handle are installed. When the semi-circular plate is vertically upward, the threaded rod is concentric with the fixing hole. Rotating the threaded rod positions one end within the fixing hole, thus fixing the positions of the control ring, control rod, and rack, thereby ensuring the fixed positions of the rotating shaft and the semi-circular plate. When it is necessary to remove the sampling tube from the soil, rotating the rotating handle causes the threaded rod to rotate, separating the end of the threaded rod from the fixing hole. The operator can then slide the control ring to adjust the semi-circular plate to a horizontal position. The compression spring, under its elastic force, ensures the stability of the control ring's position.

[0010] Furthermore, the sampling tube is provided with several mounting grooves spaced apart circumferentially, the length direction of the mounting groove is consistent with the length direction of the sampling tube, and a slider connected to the control ring is slidably disposed in the mounting groove.

[0011] By adopting the above technical solution, setting up mounting grooves and sliders, the control ring is restricted so that it can only slide and cannot rotate, while improving the stability of the control ring sliding.

[0012] Furthermore, two limiting blocks are symmetrically arranged on the inner wall of the sampling tube. When the two semicircular plates are horizontal and their surfaces are coplanar, the lower side of the semicircular plate contacts the corresponding limiting block.

[0013] By adopting the above technical solution and setting a limiting block, when the two semicircular plates are in a horizontal state and their surfaces are coplanar, the lower side of the semicircular plate contacts the corresponding limiting block. The limiting block restricts the position of the semicircular plate and supports it at the same time.

[0014] Furthermore, the outer wall of the sampling tube is provided with a groove corresponding to the rack, and the rack is slidably connected to the corresponding groove.

[0015] Furthermore, a reinforcing rod is provided at the lower end of both racks.

[0016] Furthermore, the lower end of the sampling tube is provided with several soil-breaking teeth at circumferential intervals.

[0017] Furthermore, two protective covers are symmetrically arranged on the sampling tube.

[0018] By adopting the above technical solution, two protective covers are symmetrically set on the sampling tube to protect the two adjustment components respectively.

[0019] Furthermore, the sampling tube has a discharge port at its upper end, and a shielding cover is hinged at the discharge port at the upper end of the sampling tube.

[0020] By adopting the above technical solution, a discharge port and a cover are set up to facilitate the pouring out of the soil in the sampling tube.

[0021] In conclusion, the utility model has the following beneficial effects: in the application, setting sampling pipe, handle, semicircular plate, adjusting assembly, when soil sampling, first sliding control ring upward, drive two control rods to move upward, thereby drive connecting rod, rack to move upward. Rack moves upward drive two gear wheels synchronous reverse rotation, thereby drive rotating shaft, semicircular plate rotation, adjust semicircular plate to vertical state, at this time, staff control handle and make soil enter sampling pipe inside to pull handle upward, sampling pipe is closed in soil, avoid soil from sampling pipe inside to drop out when staff pull handle upward, sampling effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model embodiment;

[0023] Figure 2 It is the structure schematic diagram of sampling pipe, control ring of the utility model embodiment;

[0024] Figure 3 It is Figure 2 A of the enlarged view of;

[0025] Figure 4 It is the internal structure schematic diagram of sampling pipe of the utility model embodiment;

[0026] Figure 5 It is the structure schematic diagram of control ring, compression spring of the utility model embodiment.

[0027] In the drawing: 10, sampling pipe;101, handle;11, rotating shaft;12, semicircular plate;13, soil breaking tooth;14, protective cover;15, discharge port;16, shielding cover;17, limit block;18, sliding slot;19, installation slot;20, adjusting assembly;21, gear wheel;22, rack;221, connecting rod;222, reinforcing rod;223, control rod;23, control ring;231, sliding block;24, fixed ring;25, compression spring;26, threaded rod;27, rotating handle;28, fixed hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application;Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application;Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0029] As Figures 1-5 shown in the application embodiment, a farmland non-point source pollution soil sampling device is disclosed, which comprises a sampling pipe 10, a handle 101, a semicircular plate 12, an adjusting assembly 20, the handle 101 is arranged on the upper end of the sampling pipe 10, and the sampling pipe 10 is convenient for a worker to control. Two rotating shafts 11 are horizontally arranged on the lower side of the sampling pipe 10 in a symmetrical manner, and two semicircular plates 12 are arranged on the two rotating shafts 11 respectively. The diameter of the semicircular plate 12 is consistent with the inner diameter of the sampling pipe 10, so that when the two semicircular plates 12 are in a horizontal state and the plate surfaces are coplanar, the lower end of the sampling pipe 10 can be closed. The rotating shafts 11 pass through the sampling pipe 10 at both ends. The adjusting assembly 20 comprises two gears 21 arranged on the ends of the rotating shafts 11, the gears 21 on the two rotating shafts 11 are engaged, so that the two rotating shafts 11 can synchronously and reversely rotate. Two racks 22 are slidably arranged on the outer wall of the sampling pipe 10, the teeth of the two racks 22 are opposite, the two racks 22 are engaged with the two gears 21 respectively, and a connecting rod 221 is arranged on the upper ends of the two racks 22. A control rod 223 is arranged on the connecting rod 221, a control ring 23 is slidably arranged on the upper side of the sampling pipe 10, and the upper ends of the two control rods 223 are connected with the control ring 23. When the sampling pipe 10 is used for soil sampling, the control ring 23 is first slid upward, the two control rods 223 are driven to move upward, and the connecting rod 221 and the racks 22 are driven to move upward. The upward movement of the racks 22 drives the two gears 21 to synchronously and reversely rotate, thereby driving the rotating shafts 11 and the semicircular plates 12 to rotate, and the semicircular plates 12 are adjusted to a vertical state. At this time, the worker controls the handle 101 to stab the sampling pipe 10 into the soil, so that the soil enters the inside of the sampling pipe 10. Then the worker pulls up the handle 101, and simultaneously slides the control ring 23 downward, the two control rods 223 are driven to move downward, the connecting rod 221 and the racks 22 are driven to move downward, the gears 21, the rotating shafts 11 and the semicircular plates 12 are driven to rotate, so that the two semicircular plates 12 are in a horizontal state and the plate surfaces are coplanar, and the lower end of the sampling pipe 10 is closed. The soil in the sampling pipe 10 is prevented from falling out of the sampling pipe 10 when the worker pulls up the handle 101 and the sampling pipe 10, and the sampling effect is good.

[0030] The adjusting assembly 20 comprises a gear 21 arranged on the end of the rotating shaft 11, the gears 21 on the two rotating shafts 11 are engaged, so that the two rotating shafts 11 can synchronously and reversely rotate. Two racks 22 are slidably arranged on the outer wall of the sampling pipe 10, the teeth of the two racks 22 are opposite, the two racks 22 are engaged with the two gears 21 respectively, and a connecting rod 221 is arranged on the upper ends of the two racks 22. A control rod 223 is arranged on the connecting rod 221, a control ring 23 is slidably arranged on the upper side of the sampling pipe 10, and the upper ends of the two control rods 223 are connected with the control ring 23. When the sampling pipe 10 is used for soil sampling, the control ring 23 is first slid upward, the two control rods 223 are driven to move upward, and the connecting rod 221 and the racks 22 are driven to move upward. The upward movement of the racks 22 drives the two gears 21 to synchronously and reversely rotate, thereby driving the rotating shafts 11 and the semicircular plates 12 to rotate, and the semicircular plates 12 are adjusted to a vertical state. At this time, the worker controls the handle 101 to stab the sampling pipe 10 into the soil, so that the soil enters the inside of the sampling pipe 10. Then the worker pulls up the handle 101, and simultaneously slides the control ring 23 downward, the two control rods 223 are driven to move downward, the connecting rod 221 and the racks 22 are driven to move downward, the gears 21, the rotating shafts 11 and the semicircular plates 12 are driven to rotate, so that the two semicircular plates 12 are in a horizontal state and the plate surfaces are coplanar, and the lower end of the sampling pipe 10 is closed. The soil in the sampling pipe 10 is prevented from falling out of the sampling pipe 10 when the worker pulls up the handle 101 and the sampling pipe 10, and the sampling effect is good.

[0031] The worker pulls the handle 101 upwards to drive the sampling tube 10 to ascend and slide the control ring 23 downwards at the same time. When the sampling tube 10 ascends, the semicircular plate 12 is driven to ascend. At this time, the semicircular plate 12 is gradually rotated to push the soil on the side of the semicircular plate 12 downwards. The sampling tube 10 continuously ascends to make the semicircular plate 12 gradually separate from the soil on the lower side of the semicircular plate 12, so that the semicircular plate 12 can stably rotate and will not be subjected to excessive resistance of the soil.

[0032] Specifically, a plurality of soil breaking teeth 13 are arranged on the lower end of the sampling tube 10 in a circumferential direction. The lower end of the soil breaking tooth 13 is sharp, which facilitates the penetration into the soil, thereby facilitating the descent of the sampling tube 10. Two protective covers 14 are symmetrically arranged on the upper end of the sampling tube 10 to protect the two adjusting assemblies 20, respectively. A discharge port 15 is formed on the upper end of the sampling tube 10. A shielding cover 16 is hingedly arranged on the upper end of the sampling tube 10 at the discharge port 15, which facilitates the pouring of the soil in the sampling tube 10.

[0033] When arranged, a threaded hole is horizontally formed on the control ring 23. A threaded rod 26 is spirally arranged in the threaded hole. A rotating handle 27 is arranged on the end of the threaded rod 26 away from the sampling tube 10. A fixing hole 28 is formed on the sampling tube 10. When the semicircular plate 12 is vertically upward, the end of the threaded rod 26 is located in the fixing hole 28 to fix the position of the semicircular plate 12. When the semicircular plate 12 is vertically upward, the threaded rod 26 is concentric with the fixing hole 28. The threaded rod 26 is rotated to make the end of the threaded rod 26 located in the fixing hole 28, so that the positions of the control ring 23, the control rod 223 and the rack 22 are fixed, thereby ensuring that the positions of the rotating shaft 11 and the semicircular plate 12 are fixed. The sampling tube 10 is fixedly sleeved with a fixing ring 24 on the upper side of the control ring 23. A compression spring 25 is sleeved on the tube between the fixing ring 24 and the control ring 23. The upper end of the compression spring 25 is connected with the fixing ring 24, and the lower end of the compression spring 25 is connected with the control ring 23. When the sampling tube 10 needs to be taken out of the soil, the rotating handle 27 is rotated to drive the threaded rod 26 to rotate, so that the end of the threaded rod 26 is separated from the fixing hole 28. Then, the worker can slide the control ring 23 to adjust the semicircular plate 12 to be horizontal. The compression spring 25 ensures the stability of the position of the control ring 23 under the action of the elastic force. A plurality of installation grooves 19 are circumferentially and interval ly formed on the sampling tube 10. The length direction of the installation groove 19 is consistent with the length direction of the sampling tube 10. A sliding block 231 connected with the control ring 23 is slidably arranged in the installation groove 19. The installation groove 19 and the sliding block 231 limit the control ring 23, so that the control ring 23 can only slide and cannot rotate, and the stability of the sliding of the control ring 23 is improved.

[0034] Specifically, the inner wall of the sampling tube 10 is symmetrically provided with two limiting blocks 17, the lower side of the semicircular plate 12 is in contact with the corresponding limiting block 17 when the semicircular plate 12 is in a horizontal state and the plate surfaces are coplanar, the limiting block 17 limits the position of the semicircular plate 12 and supports the semicircular plate 12, so that the soil in the sampling tube 10 is not too heavy and the semicircular plate 12 is not subjected to too much pressure and is not displaced excessively. The outer wall of the sampling tube 10 is provided with a sliding groove 18 corresponding to the rack 22, the rack 22 is slidably connected to the corresponding sliding groove 18, and the stability of the sliding of the rack 22 is ensured. The two lower ends of the two racks 22 are jointly provided with a reinforcing rod 222, which connects the two racks 22 and ensures the stability of the positions of the two racks 22.

[0035] The use principle of the soil sampling device for agricultural non-point source pollution in the embodiment is as follows:

[0036] When soil sampling is performed, the control ring 23 is first slid upward to drive the two control rods 223 to move upward, thereby driving the connecting rod 221 and the rack 22 to move upward. The upward movement of the rack 22 drives the two gears 21 to synchronously and reversely rotate, thereby driving the rotating shaft 11 and the semicircular plate 12 to rotate, the semicircular plate 12 is adjusted to a vertical state, and then the rotating handle 27 is rotated to drive the threaded rod 26 to rotate, so that one end of the threaded rod 26 is located in the fixed hole 28, and the positions of the control ring 23, the control rod 223 and the rack 22 are fixed. Then, the worker controls the handle 101 to stab the sampling tube 10 into the soil, so that the soil enters the inside of the sampling tube 10.

[0037] When the sampling tube 10 needs to be taken out of the soil, the rotating handle 27 is first rotated to drive the threaded rod 26 to rotate, so that the end of the threaded rod 26 is separated from the fixed hole 28, then the worker pulls the handle 101 upward while sliding the control ring 23 downward, thereby driving the two control rods 223 to move downward, thereby driving the connecting rod 221 and the rack 22 to move downward, thereby driving the gears 21, the rotating shaft 11 and the semicircular plate 12 to rotate, so that the two semicircular plates 12 are in a horizontal state and the plate surfaces are coplanar, the lower end of the sampling tube 10 is closed, and the soil in the sampling tube 10 is prevented from falling out of the sampling tube 10 when the worker pulls the handle 101 upward and the sampling tube 10, so that the sampling effect is good.

[0038] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application belong to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A soil sampling device for non-point source pollution in farmland, characterized in that: The sampling tube (10) includes a handle (101) at its upper end. Two symmetrically arranged rotating shafts (11) are horizontally rotatable on the lower side of the sampling tube (10). A semi-circular plate (12) is mounted on each rotating shaft (11), the diameter of which is the same as the inner diameter of the sampling tube (10). Both ends of the rotating shafts (11) pass through the sampling tube (10). Two symmetrically arranged adjusting components (20) are mounted on the sampling tube (10) to drive the two rotating shafts (11) to rotate synchronously in opposite directions. Each adjusting component (20) includes a sleeve fitted onto the rotating shaft (10). 11) The gear (21) at the end, the gear (21) on the two rotating shafts (11) mesh, the outer wall of the sampling tube (10) is slidably provided with two racks (22), the teeth of the two racks (22) are opposite to each other, the two racks (22) mesh with the two gears (21) respectively, the upper ends of the two racks (22) are provided with a connecting rod (221), the connecting rod (221) is provided with a control rod (223), the upper side of the sampling tube (10) is slidably fitted with a control ring (23), and the upper ends of the two control rods (223) are connected to the control ring (23).

2. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The sampling tube (10) is fixedly fitted with a fixing ring (24) on the upper side of the control ring (23). A compression spring (25) is fitted on the tube body of the sampling tube (10) between the fixing ring (24) and the control ring (23). A threaded hole is opened horizontally on the control ring (23). A threaded rod (26) is spirally arranged in the threaded hole. A rotating handle (27) is provided at the end of the threaded rod (26) away from the sampling tube (10). A fixing hole (28) is opened on the sampling tube (10). When the two semi-circular plates (12) are vertically upward, one end of the threaded rod (26) is located in the fixing hole (28) to fix the position of the semi-circular plates (12).

3. The soil sampling device for farmland non-point source pollution according to claim 2, characterized in that: The sampling tube (10) is provided with several mounting slots (19) spaced apart in the circumferential direction. The length direction of the mounting slots (19) is consistent with the length direction of the sampling tube (10). A slider (231) connected to the control ring (23) is slidably arranged in the mounting slots (19).

4. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The sampling tube (10) has two symmetrically arranged limiting blocks (17) on its inner wall. When the two semi-circular plates (12) are in a horizontal state and their surfaces are coplanar, the lower side of the semi-circular plate (12) contacts the corresponding limiting block (17).

5. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The outer wall of the sampling tube (10) is provided with a groove (18) corresponding to the rack (22), and the rack (22) is slidably connected to the corresponding groove (18).

6. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The two racks (22) are provided with a reinforcing rod (222) at their lower ends.

7. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The sampling tube (10) has several soil-breaking teeth (13) spaced out circumferentially at its lower end.

8. The soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: Two protective covers (14) are symmetrically arranged on the sampling tube (10).

9. A soil sampling device for farmland non-point source pollution according to claim 1, characterized in that: The sampling tube (10) has a discharge port (15) at its upper end, and a cover (16) is hinged at the discharge port (15) at the upper end of the sampling tube (10).

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