Device for sampling rhizosphere soil of ramie

Abstract

The invention relates to a ramie rhizosphere soil sampling device, and belongs to the technical field of soil collection devices, the ramie rhizosphere soil sampling device comprises a conical head, a vibrator, an extension cylinder and a soil sampling partition plate, the conical head is provided with a continuous and smooth conical surface, and a plurality of positioning grooves are formed in the side wall of the conical head; the vibrator generates reciprocating vibration on the conical head in the vertical direction; the extension cylinder is connected between the conical head and the vibrator; the soil sampling partition plates are annularly arranged on the outer side of the extension cylinder at equal angles in the length direction of the extension cylinder, the ends, facing the conical head, of the soil sampling partition plates are provided with slopes arranged along with the conical surface, and the slopes are inserted into the positioning grooves; the technical problem that in the prior art, when a soil sampling device is inserted into a soil layer, root systems of plants are damaged can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil collection devices, and in particular relates to a device for sampling ramie rhizosphere soil. Background Art

[0002] Ramie has a very developed root system and is a deep-rooted plant. It has a strong taproot that can penetrate more than 1 meter into the soil. It also has many lateral roots and fine roots, which are mainly distributed in the 30-50 cm soil layer. Therefore, when sampling the rhizosphere soil of ramie, there is a need to sample deep (50-60 cm) and reduce damage to the root system.

[0003] The existing patent with announcement number CN213658292U discloses a potato root rot rhizosphere soil sampling device, which includes a working box, a rotating rod is movably installed on one side of the inner wall of the working box, a first rotating gear is rotatably installed on one end of the rotating rod, a motor is fixedly installed on one side of the upper surface of the working box, the output end of the motor is fixedly connected with the second rotating gear, the outer surfaces of the first rotating gear and the second rotating gear are transmission-connected with a chain, a transmission gear is fixedly installed on the middle part of the rotating rod, one side of the outer side surface of the transmission gear is meshed with an operating rod, the lower end of the operating rod is fixedly connected with a sampler, and one side of the sampler is respectively fixedly connected with a fixed sampling chamber and a rotating sampling chamber, through the matching arrangement of the fixed sampling chamber, the fixed rod, and the rotating sampling chamber clamping ring, the fixed rod and the clamping ring can make the rotating sampling chamber and the fixed sampling chamber combined together, so that normal sampling can be achieved.

[0004] The prior art has the following problems:

[0005] When the rotating sampling chamber and the fixed sampling chamber are combined, a closed ring is formed, and a blade is arranged in the direction of inserting into the soil layer, so that the annular blade will cause damage to the root system of the plant when inserting into the soil layer. Summary of the invention

[0006] The invention provides a device for sampling ramie rhizosphere soil, which can solve the technical problem in the prior art that the root system of the plant is damaged when the soil sampling device is inserted into the soil layer.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] The present application provides a device for sampling ramie rhizosphere soil, which includes a cone head, a vibrator, an extension tube and a soil sampling baffle. The cone head has a continuous and smooth cone surface, and a plurality of positioning grooves are provided on the side wall of the cone head; the vibrator generates vertical reciprocating vibrations on the cone head; the extension tube is connected between the cone head and the vibrator; a plurality of soil sampling baffles are arranged at equal angles on the outside of the extension tube along the length direction of the extension tube, and the end of the soil sampling baffle facing the cone head has an inclined surface arranged in accordance with the cone surface, and the inclined surface is inserted into the positioning groove.

[0009] Through the above technical scheme, a cone head with a continuous and smooth cone surface is used to break the soil, which can squeeze the roots of the plants to both sides, avoiding direct damage to the roots when taking the soil. The roots can slide along the cone surface of the cone head and the inclined surface of the soil taking partition to the side of the device, thereby avoiding damage to the roots of the plants when the device is inserted into the soil layer.

[0010] In the present invention, a fan-shaped soil-borrowing space is isolated between the two soil-borrowing partitions, and the median width of the soil-borrowing space is smaller than the minimum depth of the soil-borrowing space.

[0011] Through the above technical solution, a soil sampling space with a median width smaller than the minimum depth is used, which can increase the friction between the device and the sample soil, avoid the sample soil from falling when the device is pulled out, and improve the success rate of soil sampling.

[0012] In the present invention, the soil sampling device further comprises a convergence plate, which is connected to a side of the soil sampling partition away from the extension tube, and two adjacent convergence plates are not in contact.

[0013] Through the above technical solution, the convergence plate is used to separate the soil sampling space and the outer soil while ensuring that no damage is caused to the root system, thereby further improving the success rate of soil sampling and testing.

[0014] In the present invention, a slide groove is provided on a side of the soil-excavating baffle away from the extension tube, the slide groove is parallel to the axis of the extension tube, and the convergence plate is detachably connected to the slide groove.

[0015] Through the above technical solution, a detachable bundling plate is used to facilitate the separation of soil samples after soil collection.

[0016] In the present invention, the above-mentioned soil sampling device also includes a soil unloading barrel and a push rod. The soil unloading barrel is connected to the inner side of the extension barrel. One end of the soil unloading barrel is a whole circle and the other end is provided with a plurality of through grooves. The through grooves separate one end of the soil unloading barrel into a plurality of spring pieces. The spring pieces are parallel to the inner wall of the extension barrel in a natural state. The spring pieces are inclined toward the inner wall of the extension barrel under pressure and return to a natural state after losing force. A plurality of push rods are connected to the side of the spring pieces facing the extension barrel. The push rods are connected to the side wall of the extension barrel and can slide freely.

[0017] Through the above technical solution, the use of a soil unloading cylinder and a push rod further improves the separation of the sample soil and the soil taking partition, thereby improving the convenience of use.

[0018] In the present invention, the above-mentioned soil sampling device also includes a limit cover, which is quickly detachably connected between the extension tube and the vibrator, the lower end surface of the limit cover abuts against the end of the soil taking baffle away from the cone head, the lower end surface of the limit cover abuts against the end of the convergence plate away from the cone head, and the lower end surface of the limit cover has a protrusion, which abuts between the inner wall of the extension tube and the soil unloading tube.

[0019] Through the above technical solution, a limiting cover is used to position the convergence plate and the soil extraction partition, while increasing the force-bearing area of ​​the lower part of the device and reducing the deformation of the device.

[0020] In the present invention, the soil sampling device further comprises an adapter tube and a varistor, wherein the adapter tube is connected between the cone head and the extension tube; the varistor is connected between the cone head and the adapter tube, and the varistor is communicatively connected with the vibrator; and the cone head and the adapter tube are slidably connected.

[0021] Through the above technical solution, a varistor is used to identify abnormal pressure changes of the cone head and then control the vibration machine to stop, so as to prevent the cone head from being entangled by a large number of roots and losing avoidance space, thereby preventing the root system from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 An axonometric diagram of a device for sampling ramie rhizosphere soil provided in an embodiment of the present invention;

[0024] Figure 2A front view of a device for sampling ramie rhizosphere soil provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A local enlarged view of point D in FIG.

[0026] Figure 4 for Figure 2 Sectional view at AA in the figure;

[0027] Figure 5 for Figure 4 A local enlarged view of point E in FIG.

[0028] Figure 6 for Figure 4 A local enlarged view of point F in FIG.

[0029] Figure 7 for Figure 2 The cross-sectional view at BB in FIG.

[0030] Figure 8 for Figure 2 Sectional view at CC in FIG.

[0031] Fig. 9 An exploded view of a device for sampling ramie rhizosphere soil provided by an embodiment of the present invention after removing a vibrator;

[0032] Fig.10 for Fig. 9 A local enlarged view of point G in FIG.

[0033] Fig.11 for Fig. 9 A local enlarged view of the H in FIG.

[0034] Fig.12 An axonometric view of a cone head provided in an embodiment of the present invention;

[0035] Fig.13 A front view of a device for sampling ramie rhizosphere soil provided by an embodiment of the present invention after soil sampling;

[0036] Fig.14 for Fig.13 Sectional view at point II in the figure.

[0037] Icons: 1-cone head; 101-adapter tube; 102-varistor; 103-positioning groove; 104-cone surface; 2-extension tube; 201-soil taking baffle; 202-clamping plate; 203-soil unloading tube; 204-push rod; 205-through hole; 206-slide; 3-limiting cover; 4-vibrator; 5-sample soil. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] Example:

[0043] Please refer to Figures 1 to 14 , Figures 1 to 14 An embodiment of the present application is shown.

[0044] This embodiment provides a device for sampling ramie rhizosphere soil, such as Figure 1 As shown, it includes a cone head 1, a vibrator 4, an extension tube 2 and a soil-taking baffle 201, as shown in FIG. Figure 3 As shown, the cone head 1 has a continuous and smooth cone surface 104, and a plurality of positioning grooves 103 are provided on the side wall of the cone head 1; the vibrator 4 generates vertical reciprocating vibrations on the cone head 1; Figure 2 and Figure 4 As shown, the extension tube 2 is connected between the cone head 1 and the vibrator 4; Figure 2 , Figure 3 and Figure 7 As shown, a plurality of soil-extracting baffles 201 are arranged at equal angles on the outside of the extension tube 2 along the length direction of the extension tube 2. The end of the soil-extracting baffle 201 facing the cone head 1 has an inclined surface that is arranged in accordance with the cone surface 104, and the inclined surface is inserted into the positioning groove 103.

[0045] When in use, the cone head 1 is inserted into the lower end of the extension tube 2, and then it is abutted against a preselected soil taking position. The soil taking position is selected to be away from the direction of the vigorous root system or between the spacing positions of two main roots. Then the vibrator 4 is started to perform up and down reciprocating hammering motion, so that the device, driven by the cone head 1, inserts the soil taking baffle 201 and the extension tube 2 into the soil layer. When the cone head 1 encounters the root system, the root system slides around on the smooth and continuous conical surface 104, and then further slides into the side of the device under the guidance of the lower end inclined surface of the soil taking baffle 201. After the cone head 1 reaches the predetermined soil taking depth, the sample soil 5 can be taken out together with the device due to the joint extrusion of the sample soil 5 and the soil taking baffle 201, and then the sample soil 5 between the soil taking baffles 201 is separated and packaged to complete the sampling.

[0046] Through the above technical solution, a cone head 1 with a continuous and smooth cone surface 104 is used to break the soil, which can squeeze the roots of the plants to both sides, avoiding direct damage to the roots when taking the soil. The roots can slide along the cone surface 104 of the cone head 1 and the inclined surface of the soil-taking baffle 201 to the side of the device, thereby avoiding damage to the roots of the plants when the device is inserted into the soil layer.

[0047] As a preferred implementation method, Figure 7 and Figure 8 As shown, a fan-shaped soil borrowing space is isolated between the two soil borrowing partitions 201, and the median width of the soil borrowing space is less than the minimum depth of the soil borrowing space.

[0048] It should be noted that, unlike the traditional soil ring cutter or Luoyang shovel and other soil taking methods, the soil ring cutter is in full contact with the side of the sample soil 5, so the front end of the ring cutter is difficult to effectively avoid the root system. Although the Luoyang shovel has a half-width opening, the principle of taking out the soil is to compact the soil with a gradually shrinking inner cavity, which is not conducive to the later detection of the porosity of the sample soil 5. Therefore, under the premise of ensuring that one end is open, the width-to-depth ratio is optimized to increase the friction of the soil taking baffle 201 on the sample soil 5.

[0049] Through the above technical solution, by using a soil sampling space with a median width smaller than the minimum depth, the friction between the device and the sample soil 5 can be increased, and the sample soil 5 can be prevented from falling when the device is extracted, thereby improving the success rate of soil sampling.

[0050] As a preferred implementation method, Figure 3 , Figure 8 , Fig. 9 , Fig.13 as well as Fig.14 As shown, the soil sampling device further comprises a convergence plate 202, which is connected to a side of the soil sampling baffle 201 away from the extension tube 2, and two adjacent convergence plates 202 are not in contact.

[0051] The use of the converging plate 202 will close the opening of the soil sample 5 in the soil extraction space, which can reduce the connection between the soil sample 5 and the soil layer, making it easier to separate the soil sample 5 from the soil layer when the device is extracted.

[0052] It should be noted that if Figure 3 As shown, the lower end of the focusing plate 202 is chamfered to reduce scratching on the root system; at the same time, according to actual needs, the two sides of the lower end of the focusing plate 202 are chamfered so that the lower end of the focusing plate 202 is conical and has no sharp edges to avoid cutting the roots by sharp edges.

[0053] Through the above technical solution, the convergence plate 202 is used to separate the soil sampling space and the outer soil while ensuring that no damage is caused to the root system, thereby further improving the success rate of soil sampling measurement.

[0054] As a preferred implementation method, Figure 8 As shown, a slide groove 206 is provided on the side of the soil-taking baffle 201 facing away from the extension tube 2 , the slide groove 206 is parallel to the axis of the extension tube 2 , and the converging plate 202 is detachably connected to the slide groove 206 .

[0055] When in use, after removing the limiting cover 3, the focusing plate 202 is pulled out, and then the sample soil 5 is separated.

[0056] Through the above technical solution, a detachable bundling plate 202 is used to facilitate separation of the soil sample 5 after taking the soil.

[0057] As a preferred implementation method, Figure 5 and Figure 6 As shown, the soil sampling device further includes a soil unloading cylinder 203 and a push rod 204. The soil unloading cylinder 203 is connected to the inner side of the extension cylinder 2. Fig.10 As shown, one end of the soil unloading cylinder 203 is a full circle and the other end is provided with a plurality of through slots, and the through slots separate one end of the soil unloading cylinder 203 into a plurality of spring pieces, such as Figure 6 As shown, the spring sheet is parallel to the inner wall of the extension tube 2 in the natural state, and the spring sheet is inclined toward the inner wall of the extension tube 2 under pressure and returns to the natural state after the force is lost; a plurality of push rods 204 are connected to the side of the spring sheet facing the extension tube 2, and the push rods 204 are connected as shown in FIG. Fig.11 The through hole 205 shown is connected to the side wall of the extension tube 2 and can slide freely.

[0058] When in use, after removing the device from the soil layer, separate the vibrator 4 and the limit cover 3, and then use a cone-headed stick to insert into the soil unloading cylinder 203 to expand the soil unloading cylinder 203 outward. At this time, the push rod 204 applies an outward thrust to the sample soil 5. Because the entire soil extraction space is fan-shaped, the sample soil 5 is separated under the action of the outward thrust.

[0059] It should be noted that the cone-head stick is common knowledge in the prior art and is not shown in a separate drawing here. Any object that can be inserted into the soil unloading barrel 203 to expand it can be used.

[0060] Through the above technical solution, the soil unloading cylinder 203 and the push rod 204 are used to further improve the separation of the sample soil 5 and the soil extraction partition 201, thereby improving the convenience of use.

[0061] As a preferred implementation method, Figure 6 As shown, the above-mentioned soil sampling device also includes a limit cover 3, which is quickly connected between the extension tube 2 and the vibrator 4, and the lower end surface of the limit cover 3 abuts against the end of the soil taking baffle 201 away from the cone head 1, and the lower end surface of the limit cover 3 abuts against the end of the convergence plate 202 away from the cone head 1. The lower end surface of the limit cover 3 has a protrusion, which abuts between the inner wall of the extension tube 2 and the soil unloading tube 203.

[0062] During use, when the limit cover 3 is installed, the vertical sliding of the convergence plate 202 can be effectively avoided, and the spacing of the soil taking partition 201 can also be avoided. At the same time, because the protrusion abuts between the extension tube 2 and the soil unloading tube 203, the push rod 204 cannot shrink inward, thereby avoiding soil backflow.

[0063] Through the above technical solution, the limiting cover 3 is used to position the convergence plate 202 and the soil-taking partition 201, while increasing the force-bearing area of ​​the lower part of the device and reducing the deformation of the device.

[0064] As a preferred implementation method, Figure 5 and Fig. 9 As shown, the soil sampling device also includes an adapter tube 101 and a varistor 102. The adapter tube 101 is connected between the cone head 1 and the extension tube 2; the varistor 102 is connected between the cone head 1 and the adapter tube 101, and the varistor 102 is communicatively connected to the vibrator 4; the cone head 1 and the adapter tube 101 are slidably connected.

[0065] During use, because the side area of ​​the cone head 1 and the area of ​​the cone surface 104 are constant, the friction force of contact with the rest of the soil is constant, which will keep the varistor 102 at a fixed value. At the same time, under the premise that the power of the vibrator 4 is constant, the resistance change of the varistor 102 presents a stable waveform with each hammering. Within this resistance change range, the vibrator 4 can operate normally. When the cone head 1 encounters a large number of roots or stones and cannot remove them, the resistance of the varistor 102 increases beyond the preset range. At this time, the vibrator 4 is powered off and stops running, thereby automatically protecting the device.

[0066] Through the above technical solution, the varistor 102 is used to identify the abnormal pressure change of the cone head 1 and then control the vibration machine 4 to stop, so as to prevent the cone head 1 from being entangled by a large number of roots and losing the escape space, thereby causing damage to the root system.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A device for sampling ramie rhizosphere soil, characterized in that: include: The cone head (1) has a continuous and smooth cone surface (104), and a plurality of positioning grooves (103) are formed on the outer side wall of the cone head (1); A vibrator (4) for generating reciprocating vibrations in a vertical direction on the cone head (1); An extension tube (2) connected between the cone head (1) and the vibrator (4); A plurality of soil-extracting baffles (201) are arranged at equal angles on the outside of the extension tube (2) along the length direction of the extension tube (2); one end of the soil-extracting baffle (201) facing the cone head (1) has an inclined surface that is arranged in accordance with the cone surface (104); and the inclined surface is inserted into the positioning groove (103).

2. The device for sampling ramie rhizosphere soil according to claim 1, characterized in that: A fan-shaped soil-borrowing space is isolated between two soil-borrowing partitions (201), and the median width of the soil-borrowing space is smaller than the minimum depth of the soil-borrowing space.

3. The device for sampling ramie rhizosphere soil according to claim 2, characterized in that: Also includes: The converging plate (202) is connected to a side of the soil-boring baffle (201) that is away from the extension tube (2), and two adjacent converging plates (202) are not in contact.

4. The device for sampling ramie rhizosphere soil according to claim 3, characterized in that: A slide groove (206) is provided on one side of the soil-excavating baffle (201) away from the extension tube (2); the slide groove (206) is parallel to the axis of the extension tube (2); and the converging plate (202) is detachably connected to the slide groove (206).

5. The device for sampling ramie rhizosphere soil according to claim 4, characterized in that: Also includes: A soil unloading cylinder (203) is connected to the inner side of the extension cylinder (2); one end of the soil unloading cylinder (203) is a full circle; the other end of the soil unloading cylinder (203) is provided with a plurality of through grooves; the through grooves separate one end of the soil unloading cylinder (203) into a plurality of spring pieces; the spring pieces are parallel to the inner wall of the extension cylinder (2) in a natural state; the spring pieces are inclined toward the inner wall of the extension cylinder (2) in a compressed state and return to a natural state after the force is removed; A plurality of push rods (204) are connected to a side of the spring sheet facing the extension tube (2); the push rods (204) penetrate the side wall of the extension tube (2) and can slide freely.

6. The device for sampling ramie rhizosphere soil according to claim 5, characterized in that: Also includes: A limit cover (3) is quickly detachably connected between the extension tube (2) and the vibrator (4); the lower end surface of the limit cover (3) abuts against an end of the soil taking baffle (201) away from the cone head (1); the lower end surface of the limit cover (3) abuts against an end of the convergence plate (202) away from the cone head (1); the lower end surface of the limit cover (3) has a protrusion, and the protrusion abuts between the inner wall of the extension tube (2) and the soil unloading tube (203).

7. The device for sampling ramie rhizosphere soil according to claim 6, characterized in that: Also includes: An adapter tube (101) connected between the cone head (1) and the extension tube (2); A varistor (102) is connected between the cone head (1) and the adapter tube (101), and the varistor (102) is communicatively connected to the vibration machine (4); The cone head (1) and the adapter tube (101) are slidably connected.

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