Accurate fertilizer applicator for agricultural planting

Abstract

The invention discloses a precise fertilizer applicator for agricultural planting. The precise fertilizer applicator comprises a fertilizer applicator body, a spraying assembly is installed at the front end of the fertilizer applicator body, a mixing box is installed at the end, away from the spraying assembly, of the fertilizer applicator body, a feeding opening is formed in the top of the mixing box, a filtering plate is arranged in the mixing box, and a grinding assembly is arranged at the top of the filtering plate and is in sliding connection with the inner wall of the mixing box. A mixing assembly is arranged at the center in the mixing box, the filter plate is in sliding connection with the mixing assembly, when the mixing assembly rotates, the mixing assembly drives the filter plate to rotate, and when the filter plate rotates, the grinding assembly is driven to rotate; through cooperative use of the mixing box, the grinding assembly and the stirring assembly, the fertilizer added into the mixing box can fall on a filter plate, so that the problem that an output port at the bottom of the mixing box is possibly blocked due to the fact that granular fertilizer or caked fertilizer rapidly falls at the bottom in the mixing box is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural planting equipment, and in particular to a precision fertilizer applicator for agricultural planting. Background Art

[0002] The precision fertilizer applicator for agricultural planting is an advanced agricultural equipment that improves fertilizer utilization, reduces waste, and thus increases crop yield and quality. Generally, when fertilizing crops through a fertilizer applicator, it is necessary to add various required liquid fertilizers and solid fertilizers into a mixing box in advance according to a specific proportion, add water and mix them, and then spray them out through the nozzle.

[0003] Chinese Patent Publication No.: CN115104419B discloses a fertilizer spraying device for agricultural planting, including a connecting box body, a control panel connected to the side wall of the connecting box body, a diesel generator connected to the other side wall of the connecting box body, water pumps symmetrically arranged on the end surface of the connecting box body, a stirring structure symmetrically arranged in the inner cavity of the connecting box body, a lifting structure arranged at the bottom of the connecting box body, and a driving structure connected to the bottom of the lifting structure.

[0004] In the process of adding various required liquid fertilizers and solid fertilizers into the mixing box for mixing, the added fertilizers may clump. The clumped fertilizers will not only dissolve slowly after being added into the mixing box, but will also quickly settle to the bottom of the mixing box, which may clog the output port of the mixing box and affect the subsequent overall use.

[0005] Therefore, it is necessary to provide an agricultural planting precision fertilizer applicator to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a precision fertilizer applicator for agricultural planting to solve the problem in the above background technology that the agglomerated fertilizer not only dissolves slowly after being added into the mixing box, but also quickly settles to the bottom of the mixing box, thereby possibly blocking the output port of the mixing box.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a precision fertilizer applicator for agricultural planting, comprising a fertilizer applicator body; a spray assembly is installed at the front end of the fertilizer applicator body, a mixing box is installed at one end of the fertilizer applicator body away from the spray assembly, a feeding port is provided at the top of the mixing box, a filter plate is provided in the mixing box, a grinding assembly is provided on the top of the filter plate, the grinding assembly is slidably connected to the inner wall of the mixing box, a mixing assembly is provided in the center of the mixing box, the filter plate is slidably connected to the mixing assembly, when the mixing assembly rotates, the mixing assembly drives the filter plate to rotate, and when the filter plate rotates, it drives the grinding assembly to rotate.

[0008] As a further solution of the present invention: the grinding assembly includes a grinding roller; the end of the grinding roller close to the inner wall of the mixing box is fixedly connected to a connecting shaft, the end of the connecting shaft away from the grinding roller is rotatably connected to a slider, the periphery of the connecting shaft is fixedly connected to a transmission wheel, and the bottom of the transmission wheel is slidably fitted with the top of the filter plate.

[0009] As a further solution of the present invention: the outer periphery of the connecting shaft is rotatably connected with a fixed plate, the bottom of the fixed plate is fixedly connected with an annular plate, and the top of the filter plate is provided with an annular groove slidably connected to the bottom end of the annular plate.

[0010] As a further solution of the present invention: the inner wall of the mixing box is provided with a reciprocating thread groove, and the outer edge side wall of the filter plate is fixedly provided with a protrusion that is slidably matched with the reciprocating thread groove.

[0011] As a further solution of the present invention: the side wall of the mixing box is provided with a slide groove, the slide groove is vertically arranged on the inner wall of the mixing box, and the sliding block is slidably connected to the slide groove.

[0012] As a further solution of the present invention: the mixing assembly includes a transmission shaft; the transmission shaft is arranged at the center of the mixing box and the filter plate, and the transmission shaft and the filter plate are slidably connected, the top transmission of the transmission shaft is provided with a motor, and the motor is fixedly installed at the top center of the mixing box, the periphery of the transmission shaft is symmetrically provided with mixing plates along the center, and the mixing plates are arranged in a plurality of groups in an array along the vertical direction on the transmission shaft, and the filter plate is slidably connected to the transmission shaft.

[0013] As a further solution of the present invention: a mounting groove is provided on the transmission shaft, a first connecting plate is slidably connected in the mounting groove, a square block is provided at one end of the mixing plate close to the transmission shaft, an end of the square block away from the mixing plate is fixedly connected to the end of the first connecting plate, a second connecting plate slidably adapted to the mounting groove is fixedly connected to the center of the filter plate, and a spring is provided between two adjacent groups of first connecting plates.

[0014] As a further solution of the present invention: one end of the mixing plate close to the square block is fixedly connected with a fixed shaft, and the end of the fixed shaft away from the mixing plate is rotatably connected to the square block. A limiting frame is elastically connected to the side wall of the square block, and the top of the limiting frame slides and protrudes out of the top of the square block.

[0015] As a further solution of the present invention: the limit frame is a "concave" type structure, and the fixed shaft sleeve is arranged on the periphery of the fixed shaft, a plurality of groups of limit holes are arranged in a circular array on the fixed shaft, and the limit holes are arranged at positions corresponding to the limit frame, and a limit column is fixedly provided on the limit column which is slidably adapted to the limit hole, and the limit column is arranged directly below the fixed shaft.

[0016] As a further solution of the present invention: first inclined surfaces are arranged on both sides of the mixing plate, and second inclined surfaces are arranged on the upper and lower ends of the mixing plate.

[0017] Compared with the prior art, the beneficial effect of the present invention is that through the coordinated use of the mixing box, the grinding component and the stirring component, the fertilizer added to the mixing box will fall on the filter plate, thereby avoiding the problem that the granular fertilizer or the agglomerated fertilizer quickly falls to the bottom position of the mixing box and may block the output port at the bottom of the mixing box. Then, the mixing component is started, and the mixing component rotates to mix the various fertilizers in the mixing box. When the mixing component rotates, the filter plate is driven to rotate, so that the fertilizer on the filter plate is evenly spread. Then, when the filter plate rotates, the grinding component rotates by itself, and the rotating grinding component cooperates with the fertilizer on the filter plate that rotates with the mixing component to grind and crush, avoiding the existence of some agglomerated fertilizers on the filter plate that cannot be dissolved in time, thereby ensuring the normal mixing ratio of the fertilization liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the mixing box in the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the grinding assembly in the present invention.

[0021] Figure 4 It is a structural schematic diagram of the reciprocating thread groove in the present invention.

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle.

[0023] Figure 6 It is a schematic diagram of the structure of the convex column in the present invention.

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at B in the figure.

[0025] Figure 8 It is a structural schematic diagram of a cross-section of the middle portion of the transmission shaft in the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the limit frame and the square block in the present invention.

[0027] Fig.10 It is a schematic diagram of the structure of the limiting column and the limiting hole in the present invention.

[0028] In the figure: 1. fertilizer spreader body; 2. spray assembly; 3. mixing box; 4. motor; 5. feeding port; 6. filter plate; 7. transmission shaft; 8. grinding roller; 9. transmission wheel; 10. annular plate; 11. reciprocating thread groove; 12. slide groove; 13. mixing plate; 14. slider; 15. boss; 16. fixed plate; 17. annular groove; 18. mounting groove; 19. square block; 20. limiting hole; 21. limiting frame; 22. first connecting plate; 23. fixed shaft; 24. limiting column. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 10 In an embodiment of the present invention, a precision fertilizer applicator for agricultural planting includes a fertilizer applicator body 1, a spray assembly 2 is installed at the front end of the fertilizer applicator body 1, a mixing box 3 is installed at one end of the fertilizer applicator body 1 away from the spray assembly 2, a feeding port 5 is provided on the top of the mixing box 3, a filter plate 6 is provided in the mixing box 3, a grinding assembly is provided on the top of the filter plate 6, the grinding assembly is slidably connected to the inner wall of the mixing box 3, a mixing assembly is provided in the center of the mixing box 3, the filter plate 6 is slidably connected to the mixing assembly, when the mixing assembly rotates, the mixing assembly drives the filter plate 6 to rotate, and when the filter plate 6 rotates, it drives the grinding assembly to rotate.

[0030] Preferably, the spray assembly 2 includes a fixed bracket and a spray rod, the fixed bracket is installed at the front end of the fertilizer machine body 1, the spray rod is installed on the fixed bracket, a spray head is installed at the bottom of the spray rod, and the spray rod can be folded and telescopic, and the forward direction of the fertilizer machine body 1 is the front end, and the fertilizer machine body 1 is provided with a driving assembly for driving the spray assembly 2 to telescope and fold, and a conveying assembly for conveying fertilizer liquid for crops in the mixing box 3 to the spray rod and spraying it from the spray head. The fertilizer machine body 1 and the conveying assembly and driving assembly thereon are all related components commonly used in the prior art for fertilizing crops. The detailed related structure and working principle will not be described in detail here.

[0031] During use, when it is necessary to fertilize crops in agricultural planting, the relevant liquid fertilizers and solid fertilizers are added into the mixing box 3 through the feeding port 5 respectively, and under the action of the filter plate 6, the fertilizers added into the mixing box 3 will fall on the filter plate 6, thereby avoiding the problem that the granular fertilizers or agglomerated fertilizers quickly fall to the bottom of the mixing box 3, causing the problem that the bottom output port of the mixing box 3 may be blocked, and then the corresponding proportion of water is added. After the addition is completed, the mixing component is started, and the mixing component rotates to mix the various fertilizers in the mixing box 3, and the mixing component rotates, which drives the filter plate 6 to rotate, so that the fertilizers on the filter plate 6 are evenly spread, and then the filter plate 6 is When rotating, the grinding component rotates on its own, and the rotating grinding component cooperates with the filter plate 6 that revolves around the mixing component to grind and crush the fertilizer on it, so as to avoid the existence of some lumps of fertilizer on the filter plate 6 that cannot be dissolved in time, and ensure the normal proportion and speed of the fertilization liquid mixing, and at the same time avoid the lumps of fertilizer directly falling on the bottom of the mixing box 3, and when fertilizer or water is added, impurities may be mixed in it, which may cause clogging of the nozzle after being transported to the spray rod by the conveying component. When the mixing is completed, the driving component is started to expand the spray component 2, and then the conveying component is started to transport the fertilizer liquid in the mixing box 3 and spray it through the nozzle.

[0032] See also Figure 3-Figure 8Preferably, the grinding assembly includes a grinding roller 8; one end of the grinding roller 8 close to the inner wall of the mixing box 3 is fixedly connected to a connecting shaft, and the end of the grinding roller 8 away from the connecting shaft faces the center position of the filter plate 6, and the end of the connecting shaft away from the grinding roller 8 is rotatably connected to a slider 14, and the periphery of the connecting shaft is fixedly connected to a transmission wheel 9, and the bottom of the transmission wheel 9 is slidably fitted with the top of the filter plate 6, and the periphery of the connecting shaft is rotatably connected to a fixed plate 16, which is arranged between the transmission wheel 9 and the grinding roller 8, and the bottom of the fixed plate 16 is fixedly connected to an annular plate 10, and the top of the filter plate 6 is provided with an annular groove 17 slidably connected to the bottom end of the annular plate 10. When in use, the position of the grinding roller 8 is restricted by the action of the annular plate 10 and the fixed plate 16 and the cooperation slider 14, and the annular plate 10 completely blocks the annular groove 17 to avoid Fertilizer may fall into the annular groove 17 and affect the rotation of the annular plate 10, and the bottom of the transmission wheel 9 is tightly fitted with the top of the filter plate 6 near the inner wall of the mixing box 3. In this way, when the filter plate 6 rotates, the friction between the filter plate 6 and the transmission wheel 9 can make the filter plate 6 drive the transmission wheel 9 to rotate, and the rotation of the transmission wheel 9 drives the grinding roller 8 to rotate through the connecting shaft. Due to the limitation of the sliding connection between the slider 14 and the inner wall of the mixing box 3, the grinding roller 8 is in a relatively fixed state, and the self-rotation of the filter plate 6 and the self-rotation of the transmission wheel 9 completes the grinding and crushing of the fertilizer on the top of the filter plate 6, avoiding the problem of fertilizer agglomeration and inability to dissolve in time to affect the mixing ratio, and the problem of slow dissolution of some granular fertilizers, so that the fertilization liquid is quickly mixed and the efficiency is improved.

[0033] See also Figure 4-Figure 5Preferably, the inner wall of the mixing box 3 is provided with a reciprocating thread groove 11, and the outer edge side wall of the filter plate 6 is fixedly provided with a boss 15 that is slidably adapted to the reciprocating thread groove 11. There is a certain gap between the top height of the reciprocating thread groove 11 and the top of the inner wall of the filter plate 6, so as to facilitate the addition of fertilizers, and the bottom height of the reciprocating thread groove 11 is higher than the height of the mixing component. When in use, in the initial state, the filter plate 6 is at the top position of the reciprocating thread groove 11. When the mixing component rotates, the mixing component drives the filter plate 6 to rotate. At the same time, the grinding roller 8 continuously grinds the fertilizer on the filter plate 6. When the filter plate 6 rotates, through the action of the boss 15 and under the guidance restriction of the reciprocating thread groove 11, the filter plate 6 will first move to the bottom of the mixing box 3, thereby realizing the fertilizer on the filter plate 6. The material is in contact with and mixed with different layers of other liquids added in the mixing box 3 in time, avoiding the problem that when the filter plate 6 is relatively close to the top of the mixing box 3, some solid fertilizers need to fall slowly, resulting in a long mixing time, and the problem that the liquid concentration near the top of the mixing box 3 is higher than the liquid concentration at the bottom of the mixing box 3. When the filter plate 6 moves to the bottom of the reciprocating thread groove 11, the filter plate 6 will move upward and reset with the cooperation of the protruding column 15 and the reciprocating thread groove 11, and the upward movement of the filter plate 6 will accelerate the granular fertilizer on the filter plate 6 that is ground and crushed by the grinding roller 8 to pass through the filter plate 6, that is, the fertilizer particles on it are quickly moved downward through the filter plate 6 under the impact of the water flow, so the rapid and uniform mixing of various fertilizers is achieved through the up and down reciprocating movement of the filter plate 6.

[0034] The bottom end of the slide 12 extends to a position flush with the bottom end of the transmission shaft 7. It should be noted that the depth and width of the reciprocating thread groove 11 are greater than the depth and width of the slide 12. In this way, even if the boss 15 moves to the connection between the reciprocating thread groove 11 and the slide 12, the boss 15 will not be stuck with the slide 12. At the same time, the bottom of the slide 14 is flush with the top of the filter plate 6. This avoids the problem that the boss 15 may conflict with the slide 14 when the filter plate 6 rotates. The height of the slide 14 is greater than the height of the connection between the slide 12 and the reciprocating thread groove 11. When in use, when the filter plate 6 reciprocates in the vertical direction in the mixing box 3, the slide 14 reciprocates in the slide 12 under the action of the filter plate 6.

[0035] See also Figure 1-Figure 2 , Figure 4 - Figure 5 , Figure 8-Figure 10Preferably, the mixing assembly includes a transmission shaft 7; the transmission shaft 7 is arranged at the center of the mixing box 3 and the filter plate 6, and the transmission shaft 7 and the filter plate 6 are slidably connected. The top transmission of the transmission shaft 7 is provided with a motor 4, and the motor 4 is fixedly installed at the top center of the mixing box 3. The periphery of the transmission shaft 7 is symmetrically provided with mixing plates 13 along the center, and the mixing plates 13 are arranged in a plurality of groups in an array along the vertical direction on the transmission shaft 7. The filter plate 6 is slidably connected to the transmission shaft 7. When in use, when it is necessary to mix the fertilizer liquid, start the motor 4, and the motor 4 rotates to rotate the transmission shaft 7. The rotation of the transmission shaft 7 drives the mixing plate 13 to revolve around the transmission shaft 7, thereby achieving the mixing of the fertilizer liquid in the mixing box 3. At the same time, when the transmission shaft 7 rotates, the filter plate 6 is driven to rotate.

[0036] Further, preferably, a mounting groove 18 is provided on the transmission shaft 7, and a first connecting plate 22 is slidably connected in the mounting groove 18, a square block 19 is provided at one end of the mixing plate 13 close to the transmission shaft 7, and the end of the square block 19 away from the mixing plate 13 is fixedly connected to the end of the first connecting plate 22, and the center of the filter plate 6 is fixedly connected to a second connecting plate slidably adapted to the mounting groove 18, and a spring is provided between two adjacent groups of first connecting plates 22, and there is a gap between the bottom of the first connecting plate 22 and the bottom of the square block 19, so that when multiple groups of square blocks 19 are fitted, the gap between the first connecting plate 22 and the square block 19 is used to accommodate the spring, and when the mixing plate 13 is in a vertical state, the height of the upper and lower ends of the mixing plate 13 does not exceed the height of the upper and lower ends of the square block 19, so that when the filter plate 6 moves downward to fit with the top of the square block 19, there is a gap between the top of the mixing plate 13 and the bottom of the filter plate 6, and when multiple groups of square blocks 19 are fitted, there is a gap between two adjacent groups of mixing plates 13.

[0037] When in use, in the initial state, the filter plate 6 is at the top position in the mixing box 3, and the second connecting plate is at the top position in the installation groove 18, and the plurality of first connecting plates 22 are evenly distributed in the installation groove 18 under the action of adjacent springs, so that the mixing plate 13 is evenly distributed in the mixing box 3. In this way, when the transmission shaft 7 rotates, the mixing plate 13 is caused to revolve around the transmission shaft 7 through the action of the first connecting plate 22 and the square block 19, so as to mix the liquid under the filter plate 6 in the mixing box 3. When the filter plate 6 rotates, the filter plate 6 first moves downward under the cooperation of the protruding column 15 and the reciprocating threaded groove 11, so that the second connecting plate 13 is at the installation groove 18. The groove 18 moves toward the first connecting plate 22, so that the second connecting plate pushes the first connecting plate 22 to move downward and multiple groups of first connecting plates 22 are gradually fitted together. When the boss 15 moves to the bottom end of the reciprocating thread groove 11 and starts to move upward to reset, multiple groups of square blocks 19 fit together, so that multiple groups of mixing plates 13 are close to each other. During the mixing process of the fertilizing liquid, the reciprocating movement of the filter plate 6 will not affect the mixing effect of the mixing plate 13, and during the downward movement of the filter plate 6, the fertilizer thereon will continue to fall downward, and the falling fertilizer is quickly mixed through a group of mixing plates 13 close to the filter plate 6, thereby improving the mixing efficiency.

[0038] Furthermore, preferably, one end of the mixing plate 13 close to the square block 19 is fixedly connected to a fixed shaft 23, and one end of the fixed shaft 23 away from the mixing plate 13 is rotatably connected to the square block 19. The side wall of the square block 19 is elastically connected to the limit frame 21 through a spring, and the top of the limit frame 21 slides out of the top of the square block 19. The limit frame 21 is a "concave" structure, and the limit frame 21 is sleeved on the periphery of the fixed shaft 23. A plurality of groups of limit holes 20 are arranged in an annular array on the fixed shaft 23, and the limit holes 20 are arranged at positions corresponding to the limit frames 21. The limit column 24 is fixedly provided with a limit hole corresponding to the limit hole 20 is a limit column 24 that is slidably adapted, and the limit column 24 is arranged just below the fixed shaft 23; when in use, in the initial state, multiple groups of mixing plates 13, square blocks 19, and first connecting plates 22 are evenly distributed on the transmission shaft 7, and the filter plate 6 is at the top position of the mounting groove 18. The top of the limit frame 21 protrudes out of the top of the square block 19 under the action of the corresponding spring, and the limit column 24 is adapted to the limit hole 20, so that the position of the fixed shaft 23 is limited. When the filter plate 6 moves downward, the bottom of the filter plate 6 will first contact the top of the limit frame 21 and push the limit frame 21 to move downward. , the limit frame 21 moves downward so that the limit column 24 moves and separates from the limit hole 20, thereby releasing the limit on the fixed shaft 23, so that the mixing plate 13 has the condition to rotate, and then the filter plate 6 moves downward to the bottom end position of the reciprocating thread groove 11 and starts to move and reset. During this process, multiple groups of square blocks 19 gradually approach and fit together, thereby making multiple groups of limit frames 21 move downward respectively, so that the corresponding limit columns 24 and limit holes 20 are separated, so that multiple groups of mixing plates 13 can have the condition to rotate freely. In this way, when multiple groups of square blocks 19 fit together, the mixing plate 13 is on the transmission shaft 7. The self-rotation of the mixing plate 13 can generate stronger turbulence and increase the turbulence of the liquid, so that fertilizers of different components can be mixed more fully, thereby improving the mixing uniformity and avoiding the problem of too high or too low concentration of the fertilizing liquid near the bottom of the mixing box 3. At the same time, it avoids the situation where multiple groups of mixing plates 13 cannot rotate after approaching each other and are in a vertical state, so that multiple groups of mixing plates 13 form plates with a similar larger area. In this way, when the mixing plate 13 rotates, the liquid on both sides will be pushed to rotate as a whole, thereby failing to effectively achieve effective mixing of the various components in the fertilizing liquid.

[0039] See also Fig. 9Preferably, a first inclined surface is provided on both sides of the mixing plate 13, and a second inclined surface is provided at the upper and lower ends of the mixing plate 13. Through the setting of the first inclined surface and the second inclined surface, when the water flows along the first inclined surface and the second inclined surface, different pressures will be generated on both sides of the mixing plate 13, forming a torque around the fixed axis 23 as the axis, so that the mixing plate 13 rotates. The rotation of the mixing plate 13 increases the shear force of the liquid, which helps to break up the agglomerated particles and make them more evenly dispersed and mixed, which helps to improve the quality and production efficiency of fertilizer mixing.

Claims

1. A precision fertilizer applicator for agricultural planting, comprising a fertilizer applicator body; characterized in that: A spray assembly is installed at the front end of the fertilizer spreader body, a mixing box is installed at one end of the fertilizer spreader body away from the spray assembly, a feeding port is provided on the top of the mixing box, a filter plate is provided in the mixing box, a grinding assembly is provided on the top of the filter plate, the grinding assembly is slidably connected to the inner wall of the mixing box, a mixing assembly is provided in the center of the mixing box, the filter plate is slidably connected to the mixing assembly, when the mixing assembly rotates, the mixing assembly drives the filter plate to rotate, and when the filter plate rotates, it drives the grinding assembly to rotate.

2. The agricultural planting precision fertilizer applicator according to claim 1, characterized in that: The grinding assembly includes a grinding roller; a connecting shaft is fixedly connected to one end of the grinding roller close to the inner wall of the mixing box, a sliding block is rotatably connected to the other end of the connecting shaft away from the grinding roller, a transmission wheel is fixedly connected to the periphery of the connecting shaft, and the bottom of the transmission wheel is slidably fitted with the top of the filter plate.

3. The agricultural planting precision fertilizer applicator according to claim 2, characterized in that: The outer periphery of the connecting shaft is rotatably connected with a fixing plate, the bottom of the fixing plate is fixedly connected with an annular plate, and the top of the filter plate is provided with an annular groove slidably connected with the bottom end of the annular plate.

4. The agricultural planting precision fertilizer applicator according to claim 2, characterized in that: The inner wall of the mixing box is provided with a reciprocating thread groove, and the outer edge side wall of the filter plate is fixedly provided with a convex column which is slidably matched with the reciprocating thread groove.

5. The agricultural planting precision fertilizer applicator according to claim 4, characterized in that: The side wall of the mixing box is provided with a slide groove, and the sliding block is slidably connected with the slide groove.

6. The agricultural planting precision fertilizer applicator according to claim 1, characterized in that: The mixing assembly includes a transmission shaft; the transmission shaft is arranged at the center of the mixing box and the filter plate, and the transmission shaft and the filter plate are slidably connected, the top transmission of the transmission shaft is provided with a motor, and the motor is fixedly installed at the top center of the mixing box, the periphery of the transmission shaft is symmetrically provided with mixing plates along the center, and the mixing plates are arranged in multiple groups in an array along the vertical direction on the transmission shaft, and the filter plate is slidably connected to the transmission shaft.

7. The agricultural planting precision fertilizer applicator according to claim 6, characterized in that: The transmission shaft is provided with a mounting groove, in which a first connecting plate is slidably connected, a square block is provided at one end of the mixing plate close to the transmission shaft, and an end of the square block away from the mixing plate is fixedly connected to the end of the first connecting plate, and a second connecting plate slidably adapted to the mounting groove is fixedly connected to the center of the filter plate, and a spring is provided between two adjacent groups of first connecting plates.

8. The agricultural planting precision fertilizer applicator according to claim 7, characterized in that: One end of the mixing plate close to the square block is fixedly connected with a fixed shaft, and one end of the fixed shaft away from the mixing plate is rotatably connected to the square block. A limiting frame is elastically connected inside the side wall of the square block, and the top end of the limiting frame slides out of the top of the square block.

9. The agricultural planting precision fertilizer applicator according to claim 8, characterized in that: The limit frame is a "concave" type structure, and the fixed shaft sleeve is arranged on the periphery of the fixed shaft. The fixed shaft is provided with a plurality of groups of limit holes in a circular array, and the limit holes are arranged at positions corresponding to the limit frame. The limit column is fixedly provided with a limit column that is slidably adapted to the limit hole, and the limit column is arranged directly below the fixed shaft.

10. The agricultural planting precision fertilizer applicator according to claim 6, characterized in that: The mixing plate is provided with first inclined surfaces on both sides, and second inclined surfaces are provided at upper and lower ends of the mixing plate.

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