Corn rhizosphere soil sampling device

Abstract

The utility model relates to the field of soil sampling devices, and discloses a corn rhizosphere soil sampling device which comprises a sampling pipe, a handrail is fixedly connected to the top end of the outer wall of the sampling pipe, a sampling mechanism is arranged in the sampling pipe and comprises a conveying assembly and a positioning assembly, a collecting assembly is arranged on the outer wall of the sampling pipe, and the collecting assembly is connected with the handrail. And the conveying assembly comprises a motor, an output shaft of the motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is slidably connected with a guide sleeve, and the bottom end of the outer wall of the rotating shaft is fixedly connected with a sliding block. According to the soil sampling device, through the cooperation of the sampling mechanism, the motor is started to enable the drill bit to drill into soil, the depth is determined according to the scales on the surface of the sampling pipe, and when the appropriate depth is reached, the electric push rod can push the stop block downwards to relieve blocking of the sampling pipe, so that the soil at the depth can be conveyed upwards, and soil sampling at the specific depth is achieved; a sample is accurately obtained, and a guarantee is provided for follow-up research accuracy.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling devices, and in particular to a corn rhizosphere soil sampling device. Background Technology

[0002] In agricultural scientific research, rhizosphere soil sampling is an important task. Rhizosphere soil refers to the soil area surrounding plant roots, which directly affects plant growth and development, especially for crops such as corn. The soil's microbial community and nutrient status significantly influence crop growth, health, and yield. Therefore, accurate and scientific collection of rhizosphere soil samples is of great significance for studying the interaction between soil and plants and improving agricultural production efficiency.

[0003] When sampling the rhizosphere soil of corn, handheld sampling devices are generally used. Although these devices have advantages such as being easy to carry and operate and causing little disturbance to the soil, there are still some instabilities in actual use.

[0004] Since the root depth of corn is not fixed and is mostly concentrated in the range of 0-50cm, handheld sampling devices cannot accurately control the depth of soil sampling, and soil from different depths will be mixed in during sampling. This results in the obtained sample not being able to accurately reflect the soil condition at a specific depth, thus affecting the accuracy of the research.

[0005] To address this issue, a maize rhizosphere soil sampling device is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a corn rhizosphere soil sampling device, which aims to improve the problems of existing handheld sampling devices that cannot accurately control the depth and that samples are easily mixed with soil at different depths, affecting the accuracy of the research.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a corn rhizosphere soil sampling device, comprising a sampling tube, a handle fixedly connected to the top of the outer wall of the sampling tube, a sampling mechanism provided inside the sampling tube, the sampling mechanism comprising a conveying component and a positioning component, a collecting component provided on the outer wall of the sampling tube, the conveying component comprising a motor, a rotating shaft fixedly connected to the output shaft of the motor, a guide sleeve slidably connected to the outer wall of the rotating shaft, a slider fixedly connected to the bottom end of the outer wall of the rotating shaft, an auger installed on the lower surface of the guide sleeve, a stop fixedly connected to the bottom end of the auger, a drill bit installed on the lower surface of the stop, and a discharge port opened in the middle section of the left surface of the sampling tube.

[0008] As a further description of the above technical solution:

[0009] The positioning component includes an electric push rod, which is installed at the top of the inner wall of the sampling tube. A circular block is fixedly connected to the lower surface of the output shaft of the electric push rod, and an annular groove is formed on the upper surface of the guide sleeve.

[0010] As a further description of the above technical solution:

[0011] The collection assembly includes a collection box, with a partition fixedly connected to the inner wall of the collection box. The inner wall of the partition has a feed inlet. The inner wall of the collection box is elastically connected to a locking block by a compression spring. The outer wall of the sampling tube has a locking groove.

[0012] As a further description of the above technical solution:

[0013] The motor is mounted on the upper surface of the sampling tube, the rotating shaft passes through and is rotatably connected to the upper surface of the sampling tube, and the slider is slidably connected to the inner wall of the guide sleeve.

[0014] As a further description of the above technical solution:

[0015] The baffle is inserted into the inner wall of the sampling tube, and the outer wall of the baffle is in contact with the bottom end of the inner wall of the sampling tube.

[0016] As a further description of the above technical solution:

[0017] The circular block is slidably connected to the inner wall of the annular groove, and the rotating shaft, guide sleeve, auger, stop block, drill bit, sampling tube and annular groove are all concentric.

[0018] As a further description of the above technical solution:

[0019] One end of the compression spring is fixedly connected to the right surface of the card block, and the other end of the compression spring is fixedly connected to the inner wall of the right side of the collection box. The card block is slidably connected to the inner wall of the collection box.

[0020] As a further description of the above technical solution:

[0021] The card block is inserted into the inner wall of the card slot, and the front and rear ends of the left surface of the card block are both set as bevels.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, with the cooperation of the sampling mechanism, the starting motor enables the drill bit to drill into the soil. The depth is determined according to the scale on the surface of the sampling tube. When the appropriate depth is reached, the electric push rod can push the stop block downward to release the obstruction of the sampling tube, so that the soil at that depth can be transported upward, realizing soil sampling at a specific depth, accurately obtaining samples, and ensuring the accuracy of subsequent research.

[0024] 2. In this invention, with the cooperation of the collection component, the discharge port, and the inlet, multiple sets of slots, blocks, and inlets are arranged in a circular array around the center of the collection box. Rotating the collection box allows switching of the collection position. The inclined design of the blocks facilitates their movement between the slots, improving the efficiency of multi-location sampling and reducing operation time. Attached Figure Description

[0025] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;

[0026] Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model;

[0027] Figure 3 This is a three-dimensional cross-sectional view of the sampling tube in this utility model;

[0028] Figure 4 This is a three-dimensional cross-sectional diagram of the sampling tube, collection box, and auger in this utility model.

[0029] Figure 5 This is a three-dimensional cross-sectional view of the guide sleeve in this utility model;

[0030] Figure 6 This is a three-dimensional cross-sectional diagram of the sampling tube, stop block, and drill bit in this utility model.

[0031] Legend:

[0032] 1. Sampling tube; 2. Handrail; 31. Motor; 32. Rotating shaft; 33. Guide sleeve; 34. Slider; 35. Screwdriver; 36. Stop block; 37. Drill bit; 301. Discharge port; 302. Feed port; 41. Electric push rod; 42. Round block; 401. Annular groove; 51. Collection box; 52. Partition plate; 53. Compression spring; 54. Locking block; 501. Locking groove. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 - Figure 3This utility model provides an embodiment of a corn rhizosphere soil sampling device, including a sampling tube 1. The left surface of the sampling tube 1 is marked with a scale, which can be used to intuitively understand the depth of drilling into the soil. A handle 2 is fixedly connected to the top of the outer wall of the sampling tube 1. There are two sets of handles 2, located on the left and right sides of the top of the outer wall of the sampling tube 1, which are convenient for both hands to hold. A sampling mechanism is provided inside the sampling tube 1. The sampling mechanism can extract soil at the required depth. The sampling mechanism includes a conveying component and a positioning component. A collection component is provided on the outer wall of the sampling tube 1.

[0035] Reference Figure 3 , Figure 5 , Figure 6 The conveying assembly includes a motor 31, which is prior art and can be implemented by those skilled in the art. Since it is prior art, it will not be described in detail in this case. The output shaft of the motor 31 is fixedly connected to a rotating shaft 32. A guide sleeve 33 is slidably connected to the outer wall of the rotating shaft 32. A slider 34 is fixedly connected to the bottom end of the outer wall of the rotating shaft 32. The rotating shaft 32, guide sleeve 33, and slider 34 rotate synchronously. An auger 35 is mounted on the lower surface of the guide sleeve 33. The auger 35 is prior art and is not described in detail in this case. When the auger 35 rotates, it can transport the broken soil upwards or downwards. When the output shaft of the motor 31 rotates forward, the soil will be transported upwards. A stop block 36 is fixedly connected to the bottom of the auger 35. The stop block 36 can block and prevent soil from other depths from entering the sampling tube 1. A drill bit 37 is installed on the lower surface of the stop block 36. The drill bit 37 can break up the soil. A discharge port 301 is opened in the middle section of the left surface of the sampling tube 1. The soil transported upwards by the auger 35 will eventually be discharged from the discharge port 301.

[0036] Reference Figure 3 , Figure 5 , Figure 6 The positioning component includes an electric push rod 41, which is existing technology and can be implemented by those skilled in the art. As it is existing technology, it will not be described in detail in this case. The electric push rod 41 is installed at the top of the inner wall of the sampling tube 1. A round block 42 is fixedly connected to the lower surface of the output shaft of the electric push rod 41. An annular groove 401 is opened on the upper surface of the guide sleeve 33.

[0037] Reference Figure 2 - Figure 4The collection assembly includes a collection box 51, the inner and outer rings of which are both annular solids. The bottoms of the two annular rings are connected by a connecting plate. A partition 52 is fixedly connected to the inner wall of the collection box 51. The partition 52 is located between the two annular solids. An inlet 302 is provided on the inner wall of the partition 52. The inlet 302 is aligned with the outlet 301. A locking block 54 is elastically connected to the inner wall of the collection box 51 by a compression spring 53. A slot 501 is provided on the outer wall of the sampling tube 1. The locking block 54 and the slot 501 fit together.

[0038] Reference Figure 3 , Figure 5 , Figure 6 The motor 31 is mounted on the upper surface of the sampling tube 1. The rotating shaft 32 passes through and is rotatably connected to the upper surface of the sampling tube 1. The slider 34 is slidably connected to the inner wall of the guide sleeve 33, which can slide longitudinally along the trajectory of the slider 34. The stop block 36 is inserted into the inner wall of the sampling tube 1, and the outer wall of the stop block 36 is in contact with the bottom end of the inner wall of the sampling tube 1, which can play a blocking role. The circular block 42 is slidably connected to the inner wall of the annular groove 401. The rotating shaft 32, guide sleeve 33, auger 35, stop block 36, drill bit 37, sampling tube 1 and annular groove 401 are all concentric. When the circular block 42 moves longitudinally, it will drive the guide sleeve 33 to move longitudinally.

[0039] Reference Figure 2 - Figure 4 One end of the compression spring 53 is fixedly connected to the right surface of the locking block 54, and the other end of the compression spring 53 is fixedly connected to the inner wall of the right side of the collection box 51. The locking block 54 is slidably connected to the inner wall of the collection box 51. When the locking block 54 moves to the right, it will compress the compression spring 53 to generate a reaction force. Multiple sets of locking blocks 54, locking slots 501, and feed inlets 302 are provided, arranged in a circular array with the center of the collection box 51 as the origin. The locking block 54 is inserted into the inner wall of the locking slot 501 to position the collection box 51. When the locking block 54 is inserted into the locking slot 501 at different positions, the feed inlet 302 and the discharge outlet 301 will be aligned. The front and rear ends of the left surface of the locking block 54 are both set as bevels.

[0040] Working principle: When using this device, first insert the drill bit 37 into the soil at the sampling location, then start the motor 31 to drive the rotating shaft 32 to rotate. The rotating shaft 32 will drive the slider 34 and guide sleeve 33 to rotate. The rotating guide sleeve 33 will drive the auger 35, the stop block 36 and the drill bit 37 to rotate synchronously. The rotating drill bit 37 will gradually drill into the soil. The depth of drilling into the soil can be intuitively understood by observing the scale on the left surface of the sampling tube 1.

[0041] When the appropriate depth is reached, the electric push rod 41 is activated to drive the round block 42 to press the guide sleeve 33 downward. Gradually, the distance between the electric push rod 41 and the guide sleeve 33 will increase, and the stop block 36 will also detach from the sampling tube 1. At this time, hold the handrail 2 to keep the height of the sampling tube 1 stable. The soil broken up by the rotating drill bit 37 will be transported upward by the auger 35. Finally, the soil will enter the collection box 51 through the discharge port 301 and the inlet 302 into the interlayer composed of two sets of partitions 52, completing the sampling.

[0042] When sampling at multiple locations, to avoid mixing soil from different locations and affecting subsequent testing, the collection box 51 can be rotated forcefully so that the inclined surface of the locking block 54 is pressed by the locking groove 501. The locking block 54 will gradually retract into the collection box 51, releasing the limit and compressing the compression spring 53 to generate a reaction force. When the locking block 54 is aligned with another set of locking grooves 501, the compression spring 53 will push the locking block 54 to insert into the locking groove 501 and produce a "pop" to remind the staff. At this time, the locking block 54 will position the collection box 51, and the discharge port 301 will be aligned with another inlet 302.

[0043] When sampling is complete, turn off the motor 31 and the electric push rod 41, and remove the soil from the collection box 51. Before each sampling, the motor 31 can be started to drive the auger 35 to reverse, and the electric push rod 41 can be started to move the stop block 36 down, thereby conveying the residual soil out of the sampling tube 1.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A maize rhizosphere soil sampling device comprising a sampling tube (1), characterized in that: The top end of the outer wall of the sampling pipe (1) is fixedly connected with a handrail (2), the inside of the sampling pipe (1) is provided with a sampling mechanism, the sampling mechanism comprises a conveying assembly and a positioning assembly, the outer wall of the sampling pipe (1) is provided with a collecting assembly, the conveying assembly comprises a motor (31), the output shaft of the motor (31) is fixedly connected with a rotating shaft (32), the outer wall of the rotating shaft (32) is slidably connected with a guide sleeve (33), the bottom end of the outer wall of the rotating shaft (32) is fixedly connected with a sliding block (34), the lower surface of the guide sleeve (33) is mounted with an auger (35), the bottom end of the auger (35) is fixedly connected with a stop block (36), the lower surface of the stop block (36) is mounted with a drill bit (37), and the left surface of the sampling pipe (1) is provided with a discharge port (301) in the middle section.

2. The corn rhizosphere soil sampling device of claim 1, wherein: The positioning assembly comprises an electric push rod (41), the electric push rod (41) is mounted at the top end of the inner wall of the sampling pipe (1), and the lower surface of the output shaft of the electric push rod (41) is fixedly connected with a round block (42).

3. The corn rhizosphere soil sampling device of claim 1, wherein: The collecting assembly comprises a collecting box (51), the inner wall of the collecting box (51) is fixedly connected with a partition plate (52), the inner wall of the partition plate (52) is provided with an inlet (302), and the inner wall of the collecting box (51) is elastically connected with a clamping block (54) through a compression spring (53).

4. The corn rhizosphere soil sampling device of claim 1, wherein: The motor (31) is arranged on the upper surface of the sampling pipe (1), the rotating shaft (32) penetrates and is rotatably connected to the upper surface of the sampling pipe (1), and the sliding block (34) is slidably connected to the inner wall of the guide sleeve (33).

5. The corn rhizosphere soil sampling device of claim 1, wherein: The stop block (36) is inserted into the inner wall of the sampling pipe (1), and the outer wall of the stop block (36) is attached to the bottom end of the inner wall of the sampling pipe (1).

6. The corn rhizosphere soil sampling device of claim 2, wherein: The round block (42) is slidably connected to the inner wall of the annular groove (401), and the rotating shaft (32), the guide sleeve (33), the auger (35), the stop block (36), the drill bit (37), the sampling pipe (1) and the annular groove (401) are concentric.

7. The corn rhizosphere soil sampling device of claim 3, wherein: One end of the compression spring (53) is fixedly connected to the right surface of the clamping block (54), the other end of the compression spring (53) is fixedly connected to the inner wall of the right side of the collecting box (51), and the clamping block (54) is slidably connected to the inner wall of the collecting box (51).

8. The corn rhizosphere soil sampling device of claim 3, wherein: The clamping block (54) is inserted into the inner wall of the clamping groove (501), and the front end and the rear end of the left surface of the clamping block (54) are both provided as inclined surfaces.

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