A device and method for analyzing soil nutrient deposition

Abstract

The present invention discloses a device and method for analyzing soil nutrient deposition, including a housing. An inlet box is provided at the upper end of the housing. Inside the inlet box, there is a first-stage screening mesh plate, which is divided into multiple crushing bins by partition plates. Inside the first-stage screening mesh plate, there is a first-stage crushing component. The bottom of the inlet box is connected to a second-stage crushing component. Both the first-stage crushing component and the second-stage crushing component are controlled to operate simultaneously by a soil crushing mechanism. A weighing scale is provided below the second-stage crushing component, and a measuring cylinder is provided at the upper end of the weighing scale. The lower end of the measuring cylinder is connected to a dissolution cylinder. The present invention can simultaneously input multiple soil samples through multiple crushing bins, facilitating the analysis and comparison of subsequent detection results; by performing two-stage crushing on the soil and then performing secondary screening on the soil through the first-stage screening mesh plate and the second-stage screening mesh plate, impurities can be fully filtered to obtain a more pure soil.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, and in particular to a soil nutrient deposition analysis device and method. Background Art

[0002] In order to understand the sustainable development of a specific area, it is necessary to quantify indicators such as water conservation, soil protection, carbon fixation and oxygen release, atmospheric purification, and nutrient accumulation. Among them, the detection and analysis of soil nutrients is a very important indicator.

[0003] The soil is divided into multiple layers from the ground surface vertically downward, including organic layer, humus layer, leaching layer and other soil layers. The characteristics and nutrient content of each layer are different. If you want to fully understand the soil nutrient indicators of the region, you need to test multiple soil layers and take samples from multiple locations. Therefore, more samples need to be tested. The existing soil nutrient deposition analysis device has a relatively single function and can only detect and analyze one sample at a time, which is inefficient and not convenient for intuitive comparison with samples from the same batch. Summary of the invention

[0004] The object of the present invention is to provide a soil nutrient deposition analysis device and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a soil nutrient deposition analysis device, comprising a shell, a feed box is provided at the upper end of the shell, and a primary discharge port is provided at the bottom of the feed box, a primary screening mesh plate is provided inside the feed box, and a primary crushing assembly is provided inside the primary screening mesh plate;

[0006] A secondary crushing assembly is connected to the bottom of the feed box, and both the primary crushing assembly and the secondary crushing assembly are controlled by the soil crushing mechanism to operate simultaneously;

[0007] A metering scale is provided below the secondary crushing assembly, a metering cylinder is provided at the upper end of the metering scale, and the upper end of the metering cylinder is connected to the discharge port of the secondary crushing assembly;

[0008] The lower end of the metering cylinder is connected to a dissolving cylinder, and the interior of the dissolving cylinder is driven to stir by a stirring mechanism;

[0009] The primary crushing assembly includes a plurality of swing frames, and each crushing bin is provided with a swing frame, two adjacent swing frames are connected by a coupling, a crushing roller is rotatably mounted on the inner side of the swing frame, a gap is provided between the crushing roller and the inner arc surface of the primary screening mesh plate, and push plates for flattening the soil are provided on both sides of the crushing roller, and the push plates are fixedly connected to both sides of the swing frame;

[0010] The secondary crushing assembly includes a plurality of fixed cylinders, and each fixed cylinder is arranged corresponding to each crushing bin. A rotating shaft is rotatably installed inside the shell, and the rotating shaft passes through the middle of all the fixed cylinders at the same time and is rotatably connected with the fixed cylinders. A stirring plate matching the fixed cylinder is fixedly installed on the rotating shaft, and a plurality of through holes are evenly distributed on the stirring plate. A plurality of steel balls are movably arranged inside the fixed cylinder, and the steel balls are driven to move in the fixed cylinder by the stirring plate. A secondary feed port is arranged at the upper end of the fixed cylinder, and the secondary feed port is connected with the primary discharge port. A secondary discharge port is arranged at the bottom of the fixed cylinder, and a secondary screening mesh plate is arranged at the top of the secondary discharge port.

[0011] The first-level screening mesh plate is in an arc shape, and a plurality of partition plates perpendicular to the axis direction of the first-level screening mesh plate are arranged inside the first-level screening mesh plate, and the partition plates divide the first-level screening mesh plate into a plurality of crushing bins, and the number of the metering cylinder and the dissolving cylinder matches the number of the crushing bins;

[0012] A liquid collection platform is provided on one side of the shell, an operation panel is provided on the front of the liquid collection platform near the upper end, and a liquid outlet matching the dissolving cylinder is provided below the operation panel.

[0013] Preferably, the soil crushing mechanism comprises a gear fixedly connected to one side of the swing frame, the gear is meshedly connected with a rack, and guide posts are provided at both ends of the rack;

[0014] A U-shaped frame is provided on one side of the upper end of the feed box, the rack slides on the inner side of the U-shaped frame through a guide column, a lower plate is provided at the lower end of the rack, and strip-shaped through grooves distributed up and down are provided on the lower plate;

[0015] A turntable is rotatably mounted on one side of the feed box, an eccentric column is provided on the outer end surface of the turntable, a roller is rotatably mounted on the outer diameter of the eccentric column, the roller is located inside the strip-shaped through groove and is movably connected to the strip-shaped through groove;

[0016] A first synchronous wheel is coaxially arranged inside the rotating disk, and a first synchronous wheel is also arranged at one end of the rotating shaft, and the two first synchronous wheels are connected by a first synchronous belt transmission;

[0017] The rotating shaft is driven to rotate by a first motor.

[0018] Preferably, the stirring mechanism includes a second partition located inside the shell, and the dissolving cylinders are fixed on the upper end of the second partition, a stirring frame is provided inside the dissolving cylinders, and the stirring frame is rotatably mounted on the second partition, and a second synchronous wheel is provided at the bottom of the stirring frame, and the second synchronous wheel is located below the second partition;

[0019] The stirring mechanism also includes an active synchronous wheel driven to rotate by a second motor, and the active synchronous wheel and all the second synchronous wheels are connected through a second synchronous belt transmission.

[0020] Preferably, swing arms are provided on both sides of the upper end of the swing frame. Fixed shafts are provided on both sides of the swing arms. Adjacent swing frames are connected by fixed shafts and couplings. Fixing plates are provided on the upper ends of the partition plates. The couplings are fixedly installed on the fixing plates, and the couplings and the primary screening mesh plate are coaxial.

[0021] Preferably, a secondary discharge pipe is provided at the bottom of the secondary discharge port, and a first solenoid valve is provided on the secondary discharge pipe;

[0022] A second solenoid valve is provided at the bottom of the measuring cylinder.

[0023] Preferably, a first partition plate is provided inside the housing. The fixed cylinder is fixedly installed on the upper end of the first partition plate through a bottom bracket. A buffer pad is provided between the first partition plate and the bottom bracket of the fixed cylinder.

[0024] Preferably, a plurality of tension wheels are rotatably installed at the bottom of the second partition plate, and the tension wheels squeeze the outer side of the second synchronous belt inward.

[0025] A method for analyzing soil nutrient deposition includes the following steps:

[0026] S1. Drying: First, remove the obvious impurities in the soil of each layer, and then remove the moisture in the soil to make it in a dry state. The dry soil is convenient for further screening of impurities.

[0027] S2. Screening: At the same time, break and screen the soil of each layer. Place the soil of each layer in a separate crushing bin, and break and screen the soil through a primary crushing component and a secondary crushing component respectively.

[0028] S3. Weighing: After the soil of each layer is screened, it falls into the corresponding measuring cylinder and is weighed by a weighing scale. When the soil in the measuring cylinder reaches the set weight, close the first solenoid valve;

[0029] S4. Dissolving: When the soil in all the measuring cylinders reaches the set weight, open the second solenoid valve to make the soil of each layer enter the corresponding dissolving cylinder for dissolving, and stir evenly through a stirring mechanism.

[0030] S5. Liquid extraction and detection: Set the liquid extraction volume through the operation panel, extract the liquid in the dissolving cylinder through the liquid outlet, add corresponding chemical reagents to the dissolved solution to detect the nutrients deposited in the soil of each layer, and finally analyze the detection results.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] The present invention can simultaneously input multiple soil samples through multiple crushing bins, and can process the soils in different strata or different regions of the same stratum in the same area, facilitating the analysis and comparison of subsequent test results;

[0033] The soil is subjected to hierarchical crushing by a primary crushing component and a secondary crushing component, and then subjected to secondary screening by a primary screening mesh plate and a secondary screening mesh plate, which can fully filter impurities to obtain purer soil, prevent the dissolution liquid of the soil from clogging the equipment, and the soil crushing mechanism can drive the primary crushing component and the secondary crushing component to operate simultaneously, saving energy;

[0034] All the solution cylinders have solutions with the same volume of solution water and soils of the same weight measured by a metering cylinder. Adding corresponding chemical reagents to the dissolution liquid can detect the nutrients deposited in the soil of each stratum, enabling all samples to have reasonable longitudinal comparability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0036] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0037] Figure 3 is a front view of the present invention;

[0038] Figure 4 is a side view of the present invention;

[0039] Figure 5 is of the present invention Figure 4 detailed enlarged view of part A;

[0040] Figure 6 is a front sectional view of the present invention;

[0041] Figure 7 is a side sectional view of the present invention;

[0042] Figure 8 is a partial sectional view of the present invention;

[0043] Figure 9 is a schematic diagram of the stirring mechanism of the present invention;

[0044] Figure 10 is a schematic diagram of the structure of the primary crushing component of the present invention;

[0045] Figure 11 is a schematic diagram of the structure of the stirring plate of the present invention.

[0046] In the figure: 1. Housing; 11. Feed box; 12. Primary discharge port; 13. U-shaped frame; 14. First partition board; 15. Second partition board; 2. Primary screening mesh plate; 21. Partition board; 22. Crushing bin; 23. Fixed plate; 3. Primary crushing assembly; 31. Swing frame; 32. Coupling; 33. Crushing roller; 34. Pusher plate; 35. Swing arm; 36. Fixed shaft; 4. Secondary crushing assembly; 41. Fixed cylinder; 42. Rotating shaft; 43. Stirring plate; 44. Steel ball; 45. Secondary feed port; 46. Secondary discharge port; 47. Secondary screening mesh plate; 48. Secondary discharge pipe; 49. First solenoid valve; 410. Buffer pad; 5. Soil crushing mechanism; 51. Gear; 52. Rack; 53. Guide post; 54. Lower plate; 55. Strip-shaped through groove; 56. Turntable; 57. Eccentric column; 58. Drum; 59. First synchronous pulley; 510. First synchronous belt; 511. First motor; 6. Weighing scale; 61. Measuring cylinder; 62. Second solenoid valve; 7. Dissolving cylinder; 8. Stirring mechanism; 81. Stirring frame; 82. Second synchronous pulley; 83. Driving synchronous pulley; 84. Second motor; 85. Second synchronous belt; 86. Tensioning pulley; 9. Liquid taking platform; 91. Operation panel; 92. Liquid outlet. Specific implementation manner

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Please refer to Figure 1-11 , the present invention provides a technical solution: a soil nutrient deposition analysis device, including a housing 1, a feed box 11 is provided at the upper end of the housing 1, and a primary discharge port 12 is provided at the bottom of the feed box 11. A primary screening mesh plate 2 is provided inside the feed box 11. The primary screening mesh plate 2 is in an arc shape. A plurality of partition boards 21 perpendicular to the axis direction of the primary screening mesh plate 2 are provided inside the primary screening mesh plate 2. The partition boards 21 divide the primary screening mesh plate 2 into a plurality of crushing bins 22;

[0049] Inside the first-stage screening mesh plate 2, there is a first-stage crushing assembly 3. The first-stage crushing assembly 3 includes a plurality of swing frames 31, and each crushing bin 22 is provided with a swing frame 31. Adjacent two swing frames 31 are connected by a coupling 32. Inside the swing frame 31, a crushing roller 33 is rotatably installed. There is a gap between the crushing roller 33 and the inner arc surface of the first-stage screening mesh plate 2. On both sides of the crushing roller 33, there are push plates 34 for leveling the soil. The push plates 34 are fixedly connected to both sides of the swing frame 31. On both sides of the upper end of the swing frame 31, there are swing arms 35. On both sides of the swing arms 35, there are fixed shafts 36. Adjacent two swing frames 31 are connected by the fixed shafts 36 and the coupling 32. On the upper end of the partition plate 21, there are fixing plates 23. The coupling 32 is fixedly installed on the fixing plates 23, and the coupling 32 and the first-stage screening mesh plate 2 are coaxial.

[0050] Among them, through a plurality of crushing bins 22, multiple soil samples can be put in at the same time, and the soil in different layers or different regions of the same layer in the same area can be processed simultaneously, which is convenient for analyzing and comparing the subsequent detection results. The first-stage crushing assembly 3 is used to crush the dried soil and roll the larger soil blocks into fine particles. During operation, multiple sample soils after drying need to be separately put into the crushing bins 22, and the soil in each crushing bin 22 is placed on both sides of the crushing roller 33. Adjacent two swing frames 31 are connected by the fixed shafts 36 and the coupling 32 on the swing frame 31. Therefore, when one of the swing frames 31 swings through the fixed shaft 36, all the swing frames 31 will swing simultaneously. The swing of the swing frame 31 will drive the swing of the crushing roller 33. Since the fixed shaft 36 of the swing frame 31 is coaxial with the first-stage screening mesh plate 2, the reciprocating swing of the crushing roller 33 inside the first-stage screening mesh plate 2 will roll the soil in the crushing bin 22, so that the larger soil is rolled into fine particles. The first-stage screening mesh plate 2 is used for the first-stage filtration of the soil. The fine soil falls into the bottom of the feed box 11 through the through holes of the first-stage screening mesh plate 2, while the impurities are filtered on the upper end of the first-stage screening mesh plate 2.

[0051] A secondary crushing assembly 4 is connected to the bottom of the feed box 11. The secondary crushing assembly 4 includes a plurality of fixed cylinders 41, and each fixed cylinder 41 is correspondingly arranged with each crushing bin 22. A rotating shaft 42 is rotatably installed inside the housing 1. The rotating shaft 42 passes through the middle parts of all the fixed cylinders 41 at the same time and is rotatably connected to the fixed cylinders 41. A stirring plate 43 matching the fixed cylinders 41 is fixedly installed on the rotating shaft 42. A number of through holes are evenly distributed on the stirring plate 43. A number of steel balls 44 are movably arranged inside the fixed cylinder 41. The steel balls 44 are driven by the stirring plate 43 to move inside the fixed cylinder 41. A secondary feed port 45 is provided at the upper end of the fixed cylinder 41. The secondary feed port 45 is docked with the primary discharge port 12. A secondary discharge port 46 is provided at the bottom of the fixed cylinder 41. A secondary screening mesh plate 47 is provided at the top of the secondary discharge port 46. A first partition plate 14 is provided inside the housing 1. The fixed cylinder 41 is fixedly installed on the upper end of the first partition plate 14 through a bottom bracket. A buffer pad 410 is provided between the first partition plate 14 and the bottom bracket of the fixed cylinder 41.

[0052] Among them, the secondary crushing assembly 4 is used to further crush the fine-grained soil so that it can filter out even tinier impurities, thereby obtaining soil with higher purity and being able to dissolve quickly in water. The fine-grained soil enters the inside of the fixed cylinder 41 through the secondary feed port 45 at the upper end of the fixed cylinder 41 from the primary discharge port 12 at the bottom of the feed box 11. There are steel balls 44 inside the fixed cylinder 41 for re-crushing the soil. When the rotating shaft 42 rotates, the stirring plate 43 rotates inside the fixed cylinder 41 and stirs the steel balls 44 inside the fixed cylinder 41, causing the steel balls 44 to collide with each other inside the fixed cylinder 41 and also impact the soil at the same time, so that the fine-grained soil is decomposed into tiny particles. The tiny-particle soil passes through the secondary screening mesh plate 47 at the bottom of the fixed cylinder 41 and enters the inside of the secondary discharge port 46, while the fine impurities are filtered on the upper end of the secondary screening mesh plate 47. In addition, when the stirring plate 43 stirs the steel balls 44, the steel balls 44 will also collide with the fixed cylinder 41 to cause it to vibrate, which is convenient for the tiny soil to pass through the secondary screening mesh plate 47 and filter into the secondary discharge port 46. Moreover, the fixed cylinder 41 can also drive the primary discharge port 12 to vibrate, which can prevent soil accumulation. The buffer pad 410 provided between the first partition plate 14 and the bottom bracket of the fixed cylinder 41 can reduce the impact of the fixed cylinder 41 on the first partition plate 14.

[0053] The primary crushing assembly 3 and the secondary crushing assembly 4 are both controlled to operate simultaneously by the soil crushing mechanism 5. The soil crushing mechanism 5 includes a gear 51 fixedly connected to one side of the swing frame 31. The gear 51 is meshed with a rack 52. Guide columns 53 are provided at both ends of the rack 52. A U-shaped frame 13 is provided on one side of the upper end of the feed box 11. The rack 52 slides inside the U-shaped frame 13 through the guide columns 53. A lower plate 54 is provided at the lower end of the rack 52. Strip-shaped through slots 55 are provided on the lower plate 54 and are distributed vertically. A turntable 56 is rotatably installed on one side of the feed box 11. An eccentric column 57 is provided on the outer end face of the turntable 56. A roller 58 is rotatably installed on the outer diameter of the eccentric column 57. The roller 58 is located inside the strip-shaped through slots 55 and is movably connected to the strip-shaped through slots 55. A first synchronous pulley 59 is coaxially provided inside the turntable 56. A first synchronous pulley 59 is also provided at one end of the rotating shaft 42. The two first synchronous pulleys 59 are drivingly connected by a first synchronous belt 510. The rotating shaft 42 is driven to rotate by a first motor 511.

[0054] Among them, the first motor 511 drives the rotating shaft 42 to rotate, causing the first synchronous pulley 59 at one end of the rotating shaft 42 to rotate. Through the first synchronous belt 510, the first synchronous pulley 59 coaxial with the turntable 56 rotates, causing the turntable 56 to rotate simultaneously. The eccentric column 57 and the roller 58 on the turntable 56 drive the lower plate 54 and the rack 52 to move through the strip-shaped through slots 55. Since both sides of the rack 52 are slidably connected to the U-shaped frame 13, the rack 52 makes a reciprocating translational motion inside the U-shaped frame 13. Through the transmission of the gear 51, the primary crushing assembly 3 makes a swinging motion inside the crushing chamber 22, so that the crushing roller 33 can reciprocally crush the soil. At the same time, the rotation of the rotating shaft 42 also drives the secondary crushing assembly 4 to operate to further crush the soil. Therefore, through the soil crushing mechanism 5, the primary crushing assembly 3 and the secondary crushing assembly 4 can be driven to operate simultaneously to crush the soil, saving energy.

[0055] A weighing scale 6 is provided below the secondary crushing assembly 4. A measuring cylinder 61 is provided at the upper end of the weighing scale 6. The upper end of the measuring cylinder 61 is docked with the secondary discharge port 46 of the secondary crushing assembly 4. A secondary discharge pipe 48 is provided at the bottom of the secondary discharge port 46. A first solenoid valve 49 is provided on the secondary discharge pipe 48. A second solenoid valve 62 is provided at the bottom of the measuring cylinder 61.

[0056] Among them, during the process of crushing the soil, the first solenoid valve 49 is in the open state and the second solenoid valve 62 is in the closed state. The filtered soil is directly discharged into the corresponding measuring cylinder 61 through the secondary discharge port 46 and the secondary discharge pipe 48 and is weighed in real time by the weighing scale 6. When a certain measuring cylinder 61 reaches the set weight, the corresponding first solenoid valve 49 is closed, and the excess soil is stored inside the secondary discharge port 46, while the other first solenoid valves 49 remain open until the soil in all the measuring cylinders 61 reaches the set weight and all the first solenoid valves 49 are closed.

[0057] The lower end of the metering cylinder 61 is connected to the dissolving cylinder 7, and the inside of the dissolving cylinder 7 is driven for stirring by a stirring mechanism 8. The stirring mechanism 8 includes a second partition 15 located inside the shell 1, and the dissolving cylinders 7 are fixed on the upper end of the second partition 15. A stirring frame 81 is provided inside the dissolving cylinder 7, and the stirring frame 81 is rotatably installed on the second partition 15. A second synchronous wheel 82 is provided at the bottom of the stirring frame 81, and the second synchronous wheel 82 is located below the second partition 15. The stirring mechanism 8 also includes an active synchronous wheel 83 driven to rotate by a second motor 84, and the active synchronous wheel 83 and all the second synchronous wheels 82 are connected by a second synchronous belt 85. A plurality of tensioning wheels 86 are also rotatably installed at the bottom of the second partition 15, and the tensioning wheel 86 squeezes the outer side of the second synchronous belt 85 toward the inside.

[0058] Among them, each dissolving cylinder 7 has the same volume of dissolving liquid inside, and the dissolving liquid is used to dissolve the soil, which is convenient for subsequent chemical reagent detection. When the metering cylinder 61 has collected the soil, all the second solenoid valves 62 are opened to allow the soil inside the metering cylinder 61 to enter the dissolving cylinder 7, and then stirred by the stirring mechanism 8 to achieve a better mixing effect of the soil and the dissolving liquid. During stirring, the active synchronous wheel 83 is driven to rotate by the second motor 84, and all the second synchronous wheels 82 are rotated at the same time by the second synchronous belt 85, so that the stirring frame 81 rotates and stirs the soil liquid inside the dissolving cylinder 7, so that the soil and the dissolving liquid can be mixed more evenly.

[0059] A liquid collection platform 9 is provided on one side of the housing 1 , an operation panel 91 is provided on the front side of the liquid collection platform 9 near the upper end, and a liquid outlet 92 matching the dissolving cylinder 7 is provided below the operation panel 91 .

[0060] The volume of the liquid is set through the operation panel 91, and the liquid inside the dissolving cylinder 7 can be taken out through the liquid outlet 92. The nutrients deposited in each layer of soil can be detected by adding corresponding chemical reagents to the dissolving liquid, and finally the detection results are analyzed and compared.

[0061] In addition, it should be explained that how to pump water into the dissolution cylinder 7 through a water pump, and how to pump out the mixed solution inside the dissolution cylinder 7 through the water pump and discharge it through the liquid outlet 92 are existing mature and common technologies, which are not shown in detail in the drawings.

[0062] A soil nutrient deposition analysis method comprises the following steps:

[0063] S1. Drying: first remove the obvious impurities in each layer of soil, then remove the moisture from the soil to make it dry. The dry soil can facilitate further screening of impurities;

[0064] S2. Screening: Meanwhile, break and screen the soil of each layer. Place the soil of each layer separately in a separate crushing bin 22, and break and screen the soil through a primary crushing component 3 and a secondary crushing component 4 respectively.

[0065] S3. Weighing: After being screened, the soil of each layer falls into the corresponding measuring cylinder 61 respectively and is weighed by a weighing scale 6. When the soil in the measuring cylinder 61 reaches the set weight, close the first solenoid valve 49.

[0066] S4. Dissolving: When the soil in all the measuring cylinders 61 reaches the set weight, open the second solenoid valve 62 to enable the soil of each layer to enter the corresponding dissolving cylinder 7 for dissolving respectively, and stir evenly through a stirring mechanism 8.

[0067] S5. Liquid extraction and detection: Set the liquid extraction volume through an operation panel 91, extract the liquid inside the dissolving cylinder 7 through a liquid outlet 92, add corresponding chemical reagents to the dissolved solution to detect the nutrients deposited in the soil of each layer, and finally analyze the detection results.

[0068] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil nutrient deposition analysis device, comprising a housing (1), characterized in that: A feed box (11) is provided at the upper end of the shell (1), and a primary discharge port (12) is provided at the bottom of the feed box (11); a primary screening mesh plate (2) is provided inside the feed box (11), and a primary crushing assembly (3) is provided inside the primary screening mesh plate (2); The bottom of the feed box (11) is connected to a secondary crushing assembly (4), and the primary crushing assembly (3) and the secondary crushing assembly (4) are both controlled by a soil crushing mechanism (5) to operate simultaneously; A metering scale (6) is provided below the secondary crushing assembly (4), a metering cylinder (61) is provided at the upper end of the metering scale (6), and the upper end of the metering cylinder (61) is connected to the discharge port of the secondary crushing assembly (4); The lower end of the metering cylinder (61) is connected to a dissolving cylinder (7), and the interior of the dissolving cylinder (7) is driven for stirring by a stirring mechanism (8); The primary crushing assembly (3) comprises a plurality of swing frames (31), and each crushing bin (22) is provided with a swing frame (31), two adjacent swing frames (31) are connected via a coupling (32), a crushing roller (33) is rotatably mounted inside the swing frame (31), a gap is provided between the crushing roller (33) and the inner arc surface of the primary screening mesh plate (2), push plates (34) for flattening soil are provided on both sides of the crushing roller (33), and the push plates (34) are fixedly connected to both sides of the swing frame (31); The secondary crushing assembly (4) comprises a plurality of fixed cylinders (41), and each fixed cylinder (41) is arranged corresponding to each crushing bin (22). A rotating shaft (42) is rotatably mounted inside the housing (1). The rotating shaft (42) passes through the middle of all the fixed cylinders (41) at the same time and is rotatably connected to the fixed cylinders (41). A stirring plate (43) matching the fixed cylinder (41) is fixedly mounted on the rotating shaft (42). The stirring plate (43) is evenly distributed with a plurality of through holes. A plurality of steel balls (44) are movably mounted inside the fixed cylinder (41). The steel balls (44) are driven to move in the fixed cylinder (41) by the stirring plate (43). A secondary feed port (45) is arranged at the upper end of the fixed cylinder (41). The secondary feed port (45) is connected to the primary discharge port (12). A secondary discharge port (46) is arranged at the bottom of the fixed cylinder (41). A secondary screening mesh plate (47) is arranged at the top of the secondary discharge port (46). The primary screening mesh plate (2) is in an arc shape, and a plurality of partition plates (21) perpendicular to the axis direction of the primary screening mesh plate (2) are provided inside the primary screening mesh plate (2), and the partition plates (21) divide the primary screening mesh plate (2) into a plurality of crushing bins (22), and the number of the metering cylinders (61) and the dissolving cylinders (7) matches the number of the crushing bins (22); A secondary discharge pipe (48) is provided at the bottom of the secondary discharge port (46), and the secondary discharge pipe (48) is provided with a first solenoid valve (49); A second solenoid valve (62) is provided at the bottom of the metering cylinder (61); A liquid collection platform (9) is provided on one side of the housing (1), an operation panel (91) is provided on the front side of the liquid collection platform (9) near the upper end, and a liquid outlet (92) matching the dissolving cylinder (7) is provided below the operation panel (91).

2. The soil nutrient deposition analysis device according to claim 1, wherein: The soil crushing mechanism (5) comprises a gear (51) fixedly connected to one side of the swing frame (31), the gear (51) being meshingly connected with a rack (52), and guide posts (53) are provided at both ends of the rack (52); A U-shaped frame (13) is provided on one side of the upper end of the feed box (11); the rack (52) slides inside the U-shaped frame (13) via a guide column (53); a lower plate (54) is provided at the lower end of the rack (52); and strip-shaped through grooves (55) are provided on the lower plate (54) and are distributed vertically. A turntable (56) is rotatably mounted on one side of the feed box (11); an eccentric column (57) is provided on the outer end surface of the turntable (56); a roller (58) is rotatably mounted on the outer diameter of the eccentric column (57); the roller (58) is located inside the strip-shaped through groove (55) and is movably connected to the strip-shaped through groove (55); A first synchronous wheel (59) is coaxially disposed inside the rotating disk (56), and a first synchronous wheel (59) is also disposed at one end of the rotating shaft (42), and the two first synchronous wheels (59) are connected in transmission via a first synchronous belt (510); The rotating shaft (42) is driven to rotate by a first motor (511).

3. The soil nutrient deposition analysis device according to claim 1, characterized in that: The stirring mechanism (8) comprises a second partition (15) located inside the shell (1), and the dissolving cylinder (7) is fixed to the upper end of the second partition (15), a stirring frame (81) is provided inside the dissolving cylinder (7), and the stirring frame (81) is rotatably mounted on the second partition (15), and a second synchronous wheel (82) is provided at the bottom of the stirring frame (81), and the second synchronous wheel (82) is located below the second partition (15); The stirring mechanism (8) further comprises an active synchronous wheel (83) driven to rotate by a second motor (84); the active synchronous wheel (83) and all the second synchronous wheels (82) are connected in transmission via a second synchronous belt (85).

4. The soil nutrient deposition analysis device according to claim 1, characterized in that: Swing arms (35) are provided on both sides of the upper end of the swing frame (31), and fixed shafts (36) are provided on both sides of the swing arm (35). Two adjacent swing frames (31) are connected via the fixed shafts (36) and the coupling (32). A fixed plate (23) is provided on the upper end of each of the partition plates (21). The coupling (32) is fixedly mounted on the fixed plate (23), and the coupling (32) is coaxial with the primary screening mesh plate (2).

5. The soil nutrient deposition analysis device according to claim 1, wherein: A first partition (14) is provided inside the shell (1), the fixed cylinder (41) is fixedly mounted on the upper end of the first partition (14) via a bottom bracket, and a buffer pad (410) is provided between the first partition (14) and the bottom bracket of the fixed cylinder (41).

6. The soil nutrient deposition analysis device according to claim 3, characterized in that: A plurality of tension wheels (86) are rotatably mounted on the bottom of the second partition plate (15), and the tension wheels (86) press the outer side of the second synchronous belt (85) toward the inner side.

7. A method for analyzing soil nutrient deposition, which is used in conjunction with a soil nutrient deposition analysis device according to any one of claims 1-6, characterized in that, The following steps are involved: S1. Drying: First, remove the obvious impurities in the soil of each layer, and then remove the moisture in the soil to make it in a dry state. The dry soil is convenient for further screening of impurities. S2. Screening: At the same time, crush and screen the soil of each layer. Place the soil of each layer in a separate crushing bin (22), and crush and screen the soil through the primary crushing component (3) and the secondary crushing component (4) respectively. S3. Weighing: After being screened, the soil of each layer falls into the corresponding measuring cylinder (61) respectively and is weighed by the weighing scale (6). When the soil in the measuring cylinder (61) reaches the set weight, close the first solenoid valve (49). S4. Dissolving: When the soil in all the measuring cylinders (61) reaches the set weight, open the second solenoid valve (62) to make the soil of each layer enter the corresponding dissolving cylinder (7) respectively for dissolving, and stir evenly through the stirring mechanism (8). S5. Liquid extraction and detection: Set the liquid extraction volume through the operation panel (91), extract the liquid in the dissolving cylinder (7) through the liquid outlet (92), add the corresponding chemical reagent to the dissolved solution to detect the nutrients deposited in the soil of each layer, and finally analyze the detection results.

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