Soil sampling device for land management

Abstract

The invention relates to a soil sampling device for land management, and belongs to the technical field of sampling devices.The soil sampling device comprises a quantitative cylinder, a cutting ring, a sealing cover, a cutter groove and an abutting cover, and the quantitative cylinder is used for collecting quantitative soil; the cutting ring is connected to the lower port of the quantifying cylinder; the sealing cover is detachably connected to the end, away from the cutting ring, of the quantitative cylinder. A plurality of cutter grooves are formed in the side wall of the quantifying cylinder in the axis direction of the quantifying cylinder, the ends, facing the cutting rings, of the cutter grooves are bent, and openings of the bent sections of the cutter grooves face the axis of the quantifying cylinder; the pressing cover is connected with a plurality of spring steel sheets, the spring steel sheets are slidably connected with the cutter groove, and the spring steel sheets extend out of the cutter groove after being guided and bent by the cutter groove after being inserted along the cutter groove; the technical problem that in the prior art, a sampling cylinder is directly pulled out, soil at the lower end falls out, and the soil sampling success rate is affected can be solved.

Description

Technical Field

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

[0002] Land reclamation is an important task in land management. In the early stage of land reclamation, it is necessary to collect soil from engineering land, industrial land, etc., and then conduct rhizosphere analysis of soil texture, bulk density, porosity and other data to confirm the land improvement plan. For the analysis of soil texture, bulk density, porosity and other data, a quantitative collection device is needed.

[0003] The existing patent with publication number CN112857882A discloses a soil animal quantitative sampling device and method, device: the pressure handle is arranged above the sampling tube, and is connected to the sampling tube through a support plate, the piston and the quantitative ring are arranged in the sampling tube in an upper and lower arrangement, and the lower end of the T-type piston rod passes through the round hole and is threadedly connected with the vertical threaded hole. Method: 1. Use the T-type piston rod to adjust the piston so that the upper edge of the quantitative ring is close to the piston, and the lower edge of the quantitative ring is flush with the lower end of the sampling tube; 2. Hold the pressure handle with both hands to press the sampling tube vertically into the sampling area, and after penetrating 10cm into the soil, hold the pressure handle with both hands to pull the sampling tube out of the soil, scrape the soil at the lower edge of the sampling tube with a scraper, loosen the fixing screw, and push the T-type piston rod to push the quantitative ring out of the sampling tube; 3. When the quantitative ring is pushed out by 1cm, buckle the upper and lower sample covers, continue to push the T-type piston rod, and when the quantitative ring is pushed out of the sampling tube, buckle the upper sample cover again, and put the packaged soil column into the circular groove on the sample tray with a label.

[0004] The prior art has the following problems:

[0005] After the sampling device is pressed into the sampling area, the sampling tube is directly pulled out, which will cause the soil at the lower port of the sampling tube to be in an uncontrolled state. When the soil texture is loose or sticky, the soil in the sampling tube will fall out and need to be collected again, affecting the success rate of soil sampling. Summary of the invention

[0006] The present invention provides a soil sampling device for land management, which can solve the technical problem in the prior art that directly pulling out a sampling tube causes soil at the lower end to fall out, affecting the success rate of soil sampling.

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

[0008] The present application provides a soil sampling device for land management, which includes a quantitative cylinder, a ring knife, a sealing cover, a knife groove and a pressing cover, the quantitative cylinder is used to collect a quantitative amount of soil; the ring knife is connected to the lower port of the quantitative cylinder; the sealing cover is detachably connected to one end of the quantitative cylinder away from the ring knife; a plurality of knife grooves are opened in the side wall of the quantitative cylinder along the axial direction of the quantitative cylinder, the knife groove is bent toward one end of the ring knife, and the opening of a bent section of the knife groove is toward the axis of the quantitative cylinder; the pressing cover is connected to a plurality of spring steel sheets, the spring steel sheets are slidably connected to the knife groove, and the spring steel sheets are inserted along the knife groove and then extend out of the knife groove after passing through the guide bending of the knife groove.

[0009] Through the above technical solution, after the metering cylinder connected to the ring knife is pressed into the soil, a plurality of spring steel sheets are inserted into the side wall of the metering cylinder. After the spring steel sheets are pressed down, the spring steel sheets extend out from the bottom of the metering cylinder to separate the soil in the metering cylinder and the ring knife, thereby avoiding the falling of the soil when the metering cylinder is pulled out and improving the success rate of soil sampling.

[0010] In the present invention, the above-mentioned ring knife has an outer knife surface and an inner knife surface, the outer knife surface is arranged on the side of the ring knife away from the axis of the metering cylinder; the inner knife surface is arranged on the side of the ring knife facing the axis of the metering cylinder;

[0011] The inclination angle of the outer blade surface is a positive angle, and the inclination angle of the inner blade surface is a negative angle.

[0012] Through the above technical solution, blades with different inclination angles are used to press the outer soil diagonally downward, while the inner soil will not be further squeezed and rubbed after passing through the cutting edge of the ring knife, further ensuring the accuracy of soil data collection.

[0013] In the present invention, the above-mentioned annular knife has a knife back, which is connected to the outer knife surface. The knife back is the part where the outer diameter of the annular knife is the largest, and the diameter of the knife back is greater than the outer diameter of the metering cylinder.

[0014] Through the above technical solution, a knife back with a larger diameter is used to squeeze the soil, thereby reducing the friction between the metering cylinder and the soil and reducing the resistance to taking out the metering cylinder.

[0015] In the present invention, the soil sampling device further comprises a core rod, which is inserted into the axis of the cover, and has a rod tip and a rod body, wherein the diameter of the rod body gradually decreases from one end facing the rod tip to one end facing the cover.

[0016] Through the above technical solution, the core rod is used to concentrate the pressure source when the entire device is pressed down at the axis of the device, and then the pressure is evenly transmitted to the ring cutter, avoiding pressure bias causing displacement of the soil in the metering cylinder and affecting the soil porosity and other data.

[0017] In the present invention, the core rod is slidably connected to the pressure cover, the core rod is threadedly connected with a pressure plate, and the pressure plate abuts against the pressure cover.

[0018] Through the above technical solution, a pressure plate is used to squeeze the pressure cover, and downward pressure is evenly applied to the pressure cover, so that each spring steel sheet is evenly inserted into the soil at the lower opening of the metering cylinder, thereby improving the synchronization of the operation.

[0019] In the present invention, the soil sampling device further comprises a movable plate, an indicator column and a spring. The movable plate is slidably connected to the side of the cover facing the soil. The indicator column is connected to the movable plate. The end of the indicator column facing away from the movable plate is connected to the cover. The end of the indicator column connected to the cover is flush with the upper end surface of the cover. The spring is connected between the movable plate and the cover.

[0020] Through the above technical solution, the movable plate and the indicator column are used to facilitate observation of the pressing depth of the quantitative cylinder, thereby avoiding excessive pressing of the quantitative cylinder to cause soil compaction, and further improving the accuracy of soil sample collection.

[0021] In the present invention, the soil sampling device further comprises a movable plate, a varistor, an indicator light and a battery, wherein the movable plate is slidably connected to the side of the cover facing the soil; the varistor is connected between the movable plate and the cover; the indicator light is connected to the upper end surface of the cover; and the battery is connected to the inner side of the cover;

[0022] The varistor, indicator light and battery are electrically connected.

[0023] Through the above technical solution, varistors and indicator lights are used to more intuitively obtain the pressing depth of the quantitative cylinder, further improving the accuracy of soil sample collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 An axonometric diagram of the soil sampling device for land management provided by an embodiment of the present invention after sampling;

[0026] Figure 2 A front view of the soil sampling device for land management provided by an embodiment of the present invention after sampling;

[0027] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0028] Figure 4 An axonometric diagram of a soil sampling device for land management provided by an embodiment of the present invention before sampling;

[0029] Figure 5 A front view of a soil sampling device for land management provided by an embodiment of the present invention before sampling;

[0030] Figure 6 for Figure 5 Sectional view at the middle BB;

[0031] Figure 7 for Figure 6 A local enlarged view of point C in FIG.

[0032] Figure 8 for Figure 6 A local enlarged view of point D in FIG.

[0033] Fig. 9 An axonometric view of a soil sampling device for land management provided by an embodiment of the present invention when a spring steel sheet is inserted;

[0034] Fig.10 A front view of a soil sampling device for land management provided by an embodiment of the present invention when a spring steel sheet is inserted;

[0035] Fig.11 for Fig.10 Sectional view at EE;

[0036] Fig.12 A cross-sectional view of a cover provided by an embodiment of the present invention;

[0037] Fig.13 An exploded view of a cover provided by an embodiment of the present invention;

[0038] Fig.14 A cross-sectional view of another cover provided by an embodiment of the present invention;

[0039] Fig.15 An exploded view of another cover provided by an embodiment of the present invention;

[0040] Fig.16 An axonometric view of a spring steel sheet provided in an embodiment of the present invention;

[0041] Fig.17 for Fig.16 A partial enlarged view of point F in the middle.

[0042] Icons: 1-metering cylinder; 101-knife groove; 2-ring knife; 201-outer knife surface; 202-inner knife surface; 203-knife back; 3-capping; 301-core rod; 3011-rod tip; 3012-rod body; 302-movable plate; 3021-indicator column; 303-spring; 304-threaded hole; 305-through groove; 306-varistor; 307-battery; 308-indicator light; 4-pressure cover; 401-spring steel sheet; 4011-upper knife surface; 4012-lower knife surface; 402-pressure plate; 5-soil. DETAILED DESCRIPTION

[0043] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Embodiment 1:

[0048] Please refer to Figures 1 to 13 as well as Figure 16 to Figure 17 , Figures 1 to 13 as well as Figure 16 to Figure 17 An embodiment of the present application is shown.

[0049] This embodiment provides a soil sampling device for land management, such as Figures 1 to 3As shown, it includes a metering cylinder 1, a ring knife 2, a cover 3, a knife groove 101 and a pressing cover 4. The metering cylinder 1 is used to collect a fixed amount of soil 5; the ring knife 2 is threadedly connected to the lower end of the metering cylinder 1; the cover 3 is detachably connected to the end of the metering cylinder 1 away from the ring knife 2 through a thread; a plurality of knife grooves 101 are opened in the side wall of the metering cylinder 1 along the axial direction of the metering cylinder 1. During processing, the overall shape of the metering cylinder 1 is first processed, and then the shape is evenly divided into equal parts by wire cutting, and then half of the knife groove 101 is processed at both ends of the dividing surface, and then the burrs are cleaned, and welding and polishing are performed from the inner and outer sides of the metering cylinder 1, as shown in FIG. Figure 7 As shown, the knife groove 101 is bent toward one end of the ring knife 2, and the opening of the bent section of the knife groove 101 is toward the axis of the metering cylinder 1; the pressing cover 4 is plugged with a plurality of spring steel sheets 401, and the spring steel sheets 401 are slidably connected to the knife groove 101, as shown in FIG. Figure 3 and Fig. 9 As shown, the spring steel sheet 401 is inserted along the knife groove 101 and then extends out of the knife groove 101 after being guided and bent by the knife groove 101 .

[0050] When using, Figure 4 and Figure 5 As shown, after removing the pressing cover 4, one side of the ring knife 2 is pressed into the soil 5 after the surface is cleaned, and then the entire quantitative cylinder 1 is pressed into the soil 5 by hammering, and then Figures 9 to 11 As shown, the spring steel sheets 401 are inserted into the corresponding knife grooves 101 one by one, and then the pressing cover 4 is pushed downward to make the spring steel sheets 401 penetrate the knife grooves 101 until they reach the positions shown in FIG. Figure 7 At the bending part at the bottom of the knife groove 101 shown, the spring steel sheet 401 is deformed along with the knife groove 101 under a greater pressure and then changes direction. The tip of the spring steel sheet 401 after changing direction converges radially inward, cutting the entire soil 5 in the ring knife 2 and the metering cylinder 1 to reduce the adhesion of the two parts of the soil 5. At the same time, the spring steel sheet 401 with a certain rigidity also forms a mesh seal below the metering cylinder 1 to reduce the falling of the soil 5 when it is pulled out.

[0051] It should be noted that if Fig.16 and Fig.17 As shown, one end of the spring steel sheet 401 inserted into the soil 5 is at an acute angle, and the acute angle has an upper blade surface 4011 and a lower blade surface 4012, and the upper and lower blade surfaces have an inclination angle. By changing the inclination angles of the upper blade surface 4011 and the lower blade surface 4012, the spring steel sheet 401 can be slightly guided to make a certain deflection in a sudden motion, which is mainly used to allow the spring steel sheet 401 to cut more soil 5 into the metering cylinder 1, so as to facilitate the trimming of the end surface of the soil 5 after taking it out later.

[0052] Through the above technical solution, after the metering cylinder 1 connected with the ring knife 2 is pressed into the soil 5, a plurality of spring steel sheets 401 are inserted into the side wall of the metering cylinder 1. After the spring steel sheets 401 are pressed down, the spring steel sheets 401 extend out from the bottom of the metering cylinder 1 to separate the soil 5 in the metering cylinder 1 and the ring knife 2, thereby avoiding the soil 5 from falling when the metering cylinder 1 is pulled out, and improving the success rate of soil 5 sampling.

[0053] As a preferred implementation method, Figure 7 As shown, the above-mentioned ring knife 2 has an outer knife surface 201 and an inner knife surface 202, the outer knife surface 201 is arranged on the side of the ring knife 2 away from the axis of the metering cylinder 1; the inner knife surface 202 is arranged on the side of the ring knife 2 facing the axis of the metering cylinder 1;

[0054] like Figure 7 As shown, the inclination angle of the outer blade surface 201 is a positive angle. When the angle is positive, as the ring blade 2 is pressed downward, the outer blade surface 201 will always apply an oblique downward thrust to the outer soil 5, so that the soil 5 is separated to facilitate the descent of the device. The inclination angle of the inner blade surface 202 is a negative angle. When the angle is negative, as the ring blade 2 is pressed downward, the inner blade surface 202 will not apply a thrust to the inner soil 5, thereby avoiding the inner soil 5 being compressed under the action of friction and affecting the detection data.

[0055] Through the above technical solution, blades with different inclination angles are used to press the outer soil 5 obliquely downward, while the inner soil 5 will not be further squeezed and rubbed after passing through the cutting edge of the ring knife 2, further ensuring the accuracy of soil 5 data collection.

[0056] As a preferred implementation method, Figure 7 As shown, the above-mentioned ring knife 2 has a knife back 203, which is connected to the outer knife surface 201. The knife back 203 is the largest outer diameter of the ring knife 2, and the diameter at the knife back 203 is larger than the outer diameter of the metering cylinder 1.

[0057] Through the above technical solution, the soil 5 is squeezed by using the knife back 203 with a larger diameter, thereby reducing the friction between the metering tube 1 and the soil 5 and reducing the resistance to taking out the metering tube 1.

[0058] As a preferred implementation method, Figure 3 As shown, the soil sampling device further comprises a core rod 301, and the core rod 301 is connected to the axis of the cover 3. Figure 8 As shown, the core rod 301 has a rod tip 3011 and a rod body 3012 , and the diameter of the rod body 3012 gradually decreases from an end facing the rod tip 3011 to an end facing the cover 3 .

[0059] It should be noted that if Figures 6 to 8As shown, the cross-sectional reagent of the soil 5 collected by the quantitative cylinder 1 is the area between the inner diameter of the ring knife 2 corresponding to the knife back 203 and the maximum diameter of the tip 3011 of the core rod 301, and then as the soil 5 gradually enters the quantitative cylinder 1, the friction between the soil 5 and the quantitative cylinder 1 and the core rod 301 gradually decreases.

[0060] Through the above technical solution, the core rod 301 is used to concentrate the pressure source when the entire device is pressed down at the axis of the device, and then the pressure is evenly transmitted to the ring knife 2, thereby avoiding pressure bias causing the soil 5 in the metering cylinder 1 to move and affect the porosity and other data of the soil 5.

[0061] As a preferred implementation method, Figure 3 and Fig.11 As shown, the core rod 301 is slidably connected to the pressing cover 4 , and a pressure plate 402 is threadedly connected to the core rod 301 , and the pressure plate 402 is in contact with the pressing cover 4 .

[0062] When in use, after the pressing cover 4 is inserted into the tail of the core rod 301 , the pressure plate 402 is screwed into the thread, and the downward pressure on the pressing cover 4 is increased by rotating the pressure plate 402 to drive the spring steel sheet 401 to bend and deform and cut off the soil 5 .

[0063] Through the above technical solution, the pressure plate 402 is used to squeeze the pressing cover 4, and downward pressure is evenly applied to the pressing cover 4, so that each spring steel sheet 401 is evenly inserted into the soil 5 at the lower opening of the metering cylinder 1, thereby improving the synchronization of the operation.

[0064] As a preferred implementation method, Fig.12 and Fig.13 As shown, the soil sampling device further includes a movable plate 302, an indicator column 3021 and a spring 303. The movable plate 302 is slidably connected to the side of the cover 3 facing the soil 5; the indicator column 3021 is connected to the movable plate 302, and the end of the indicator column 3021 facing away from the movable plate 302 is connected to the cover 3, and the end of the indicator column 3021 connected to the cover 3 is flush with the upper end surface of the cover 3; the spring 303 is connected between the movable plate 302 and the cover 3.

[0065] Through the above technical solution, the movable plate 302 and the indicator column 3021 are used to facilitate observation of the pressing depth of the quantitative cylinder 1, thereby avoiding excessive pressing of the quantitative cylinder 1 to cause the soil 5 to be compacted, and further improving the accuracy of the sample collected from the soil 5.

[0066] Embodiment 2:

[0067] Please refer to Fig.14 and Fig.15 , Fig.14 and Fig.15 Another embodiment of the present application is shown.

[0068] This embodiment provides a soil sampling device for land management, which is substantially the same as that of Embodiment 1, except that:

[0069] like Fig.14 and Fig.15 As shown, the varistor 306 is connected between the movable plate 302 and the cover 3; the indicator light 308 is connected to the upper end surface of the cover 3; and the storage battery 307 is connected to the inner side of the cover 3;

[0070] The varistor 306 , the indicator light 308 and the battery 307 are electrically connected.

[0071] Through the above technical solution, the varistor 306 and the indicator light 308 are used to more intuitively obtain the pressing depth of the quantitative tube 1, further improving the accuracy of the sample collected from the soil 5.

[0072] 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 who is familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A soil sampling device for land management, characterized in that: include: A quantitative cylinder (1) for collecting a quantitative amount of soil (5); A ring knife (2) connected to the lower port of the metering cylinder (1); A sealing cover (3) detachably connected to an end of the metering cylinder (1) facing away from the ring knife (2); A plurality of knife grooves (101) are formed in the side wall of the metering cylinder (1) along the axial direction of the metering cylinder (1), the knife grooves (101) are bent toward one end of the ring knife (2), and the opening of the bent end of the knife grooves (101) faces the axial direction of the metering cylinder (1); The pressing cover (4) is connected to a plurality of spring steel sheets (401), wherein the spring steel sheets (401) are slidably connected to the knife groove (101), and the spring steel sheets (401) are inserted along the knife groove (101) and extend out of the knife groove (101) after being guided and bent by the knife groove (101).

2. The soil sampling device for land management according to claim 1, characterized in that: The ring knife (2) has: An outer blade surface (201) is arranged on a side of the annular blade (2) facing away from the axis of the metering cylinder (1); An inner blade surface (202) is arranged on a side of the ring blade (2) facing the axis of the metering cylinder (1); The inclination angle of the outer blade surface (201) is a positive angle, and the inclination angle of the inner blade surface (202) is a negative angle.

3. The soil sampling device for land management according to claim 2, characterized in that: The ring knife (2) has: A knife back (203) is connected to the outer knife surface (201); the knife back (203) is located at the part where the outer diameter of the ring knife (2) is the largest; and the diameter of the knife back (203) is greater than the outer diameter of the metering cylinder (1).

4. The soil sampling device for land management according to claim 3, characterized in that: Also includes: A core rod (301) is inserted into the axis of the cover (3), and the core rod (301) comprises a rod tip (3011) and a rod body (3012), wherein the diameter of the rod body (3012) gradually decreases from an end facing the rod tip (3011) to an end facing the cover (3).

5. The soil sampling device for land management according to claim 4, characterized in that: The core rod (301) is slidably connected to the pressing cover (4); the core rod (301) is threadedly connected to a pressure plate (402); and the pressure plate (402) abuts against the pressing cover (4).

6. The soil sampling device for land management according to claim 5, characterized in that: Also includes: A movable plate (302) slidably connected to the cover (3) and facing one side of the soil (5); an indicator column (3021) connected to the movable plate (302); an end of the indicator column (3021) facing away from the movable plate (302) and penetrating the cover (3); the indicator column (3021) penetrating one end of the cover (3) and being flush with the upper end surface of the cover (3); A spring (303) is connected between the movable plate (302) and the sealing cover (3).

7. The soil sampling device for land management according to claim 5, characterized in that: Also includes: A movable plate (302) slidably connected to the cover (3) and facing one side of the soil (5); A varistor (306) connected between the movable plate (302) and the cover (3); An indicator light (308) connected to the upper end surface of the cover (3); A storage battery (307) connected to the inner side of the cover (3); The varistor (306), the indicator light (308) and the battery (307) are electrically connected.

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