Agricultural mixed fertilization machine

Abstract

The invention discloses an agricultural mixed fertilization machine which comprises a rack, a material box, a stirring device and a double-tilling-blade rotary tillage device, walking wheels are installed below the rack, a traction frame is installed at the front end of the rack in a hinged mode, a power transmission device is arranged on the upper wall of the rack, and the stirring device and the material box are arranged on the upper wall of the rack. The double-tilling-blade rotary tillage device is arranged on the bottom wall of the rack, and a fertilizer discharging device is arranged between the stirring device and the double-tilling-blade rotary tillage device. The invention belongs to the technical field of agricultural fertilizer application, and provides an agricultural mixed fertilizer application machine which reasonably combines and designs a plurality of treatment procedures of fertilizer stirring, fertilizer application sowing and soil rotary tillage, solves the problem of mixing of powder and chemical fertilizer particles, realizes efficient and uniform mixing of charcoal powder and chemical fertilizer particles, and improves the fertilizer application efficiency. The mixed fertilizer is fed into a plough layer, so that the utilization rate of the fertilizer is increased, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural fertilization, and specifically refers to an agricultural mixed fertilization machine. Background Art

[0002] Biochar is a carbonized substance formed by the pyrolysis of biological residues under anaerobic or hypoxic conditions. The characteristics of biochar such as porosity and high specific surface area endow it with excellent adsorption properties, which can effectively increase soil porosity, permeability, reduce bulk density, and increase water retention capacity. Applying biochar can increase the amount of soil organic matter, and thus improve the content of soil organic matter. Therefore, scientifically formulating biochar with organic matter and inorganic nutrients is beneficial to improving the utilization rate of fertilizers, thereby increasing soil fertility and improving soil structure.

[0003] At present, the existing methods for mixing biochar and chemical fertilizers are as follows: One is to manually mix and stir multiple elements such as biochar and chemical fertilizers, and then spread them into the soil manually. The manual stirring has a high working intensity, low efficiency, and problems such as uneven fertilizer mixing and spreading. The other is a simple organic fertilizer mixer, whose main disadvantages are uneven mixing of the mixture, easy clogging, low work efficiency, and only using one kind of power, etc. This kind of equipment can only perform single fertilizer stirring and cannot achieve fertilizer spreading.

[0004] In addition, the existing fertilizer mixers have an unsatisfactory mixing effect on chemical fertilizers and biochar. When applying fertilizers, in order to better contact with the soil and play a role, biochar powder is mostly used, while chemical fertilizers are mostly granular. When mixing biochar powder and chemical fertilizer granules, due to differences in strength, density, and fluidity, it is difficult to achieve an efficient and uniform mixing effect.

[0005] Therefore, in the face of the huge agriculture, there is an urgent need for a biochar and chemical fertilizer dispensing equipment with higher efficiency, higher automation degree, and integrated mixing and spreading to better solve these problems. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an agricultural mixed fertilization machine, which rationally combines and designs multiple treatment processes of fertilizer mixing, fertilization spreading, and soil rotary tillage, solves the problem of mixing powder and chemical fertilizer granules, realizes the efficient and uniform mixing of biochar powder and chemical fertilizer granules, and sends the mixed fertilizer into the tillage layer to improve the utilization rate of fertilizers and increase production efficiency.

[0007] The technical solution adopted by the present invention is as follows: An agricultural mixed fertilizing machine provided by the present invention includes a frame, a material box, a stirring device and a double-tiller rotary tillage device. Traveling wheels are installed below the frame. A traction frame is hingedly installed at the front end of the frame. A power transmission device is provided on the upper wall of the frame. The stirring device and the material box are arranged on the upper wall of the frame, and the double-tiller rotary tillage device is arranged on the bottom wall of the frame. A fertilizer discharging device is arranged between the stirring device and the double-tiller rotary tillage device; The double-tiller rotary tillage device includes a lifting chassis and a first cutter group and a second cutter group rotatably arranged in the lifting chassis. A discharge port communicating with the fertilizer discharging device is penetrated through the frame, and the discharge port is arranged between the first cutter group and the second cutter group; The stirring device is arranged above the fertilizer discharging device. The stirring device includes a horizontal stirring container, a stirring shaft and spiral ribbon stirring blades. The stirring shaft rotatably penetrates through the horizontal stirring container. Connecting rods are respectively arranged at both ends of the stirring shaft. The spiral ribbon stirring blades are wound around the outside of the stirring shaft through the connecting rods, and the spiral ribbon stirring blades are rotatably arranged in the horizontal stirring container through the stirring shaft; The power transmission device is provided with a first output shaft and a second output shaft. The first output shaft is in transmission connection with the stirring shaft, and the second output shaft is in transmission connection with the double-tiller rotary tillage device; The material box includes a powder storage cavity and a fertilizer storage cavity. The powder storage cavity is arranged on one side of the material box close to the horizontal stirring container, and the powder storage cavity is arranged above the horizontal stirring container. The fertilizer storage cavity is arranged below the powder storage cavity and on the side of the material box away from the horizontal stirring container. Inclined guide plates are respectively arranged on the bottom walls of the powder storage cavity and the fertilizer storage cavity. A strip-shaped fertilizer discharging pipe is communicated between the bottom end of the fertilizer storage cavity and the horizontal stirring container. Feeding hoppers are respectively communicated with the upper walls of the powder storage cavity and the fertilizer storage cavity; The upper end of the horizontal stirring container is communicated with a material leveling cavity. Powder discharging pipes are symmetrically arranged at the bottom of the powder storage cavity. Feeding ports are symmetrically arranged on the side walls of the material leveling cavity. The powder discharging pipes are communicated with the feeding ports. The powder storage cavity is communicated with the material leveling cavity through the powder discharging pipes. Variable-speed convection type material leveling mechanisms are oppositely arranged at both ends of the material leveling cavity. The variable-speed convection type material leveling mechanism includes a material leveling air pump and a wind baffle. The material leveling air pump is installed on the upper wall of the frame. An air inlet is arranged at the end of the material leveling cavity. A blowing hose is communicated between the material leveling air pump and the air inlet. The material leveling air pump blows air into the material leveling cavity through the air inlet. Adjusting air sliding holes are symmetrically arranged on the upper wall of the material leveling cavity. The wind baffle is slidably arranged in the air adjusting port, and the wind baffle is slidably attached to the inner wall of the material leveling cavity. The wind baffle is arranged between the feeding port and the air inlet. A reciprocating lifting assembly is in transmission connection on the stirring shaft. The reciprocating lifting assembly is connected with the wind baffle and drives the wind baffle to reciprocate up and down to adjust the depth of the wind baffle inserted into the material leveling cavity.

[0008] Further, the reciprocating lifting assembly includes a square frame and an eccentric disk rotatably disposed within the square frame. The eccentric disk is inscribed within the square frame, and the eccentric disk is fixedly connected to the stirring shaft. The stirring shaft eccentrically penetrates the eccentric disk. The square frame is provided with a carriage arranged in an inverted U shape. The carriage is slidably clamped outside the material leveling chamber, and the carriage is connected to the wind deflector.

[0009] Further, an exhaust pipe is penetratingly provided on the upper wall of the material leveling chamber. A filter screen is provided inside the exhaust pipe, and a flapping member is installed inside the exhaust pipe through a spring. The flapping member is disposed above the filter screen.

[0010] Further, a fertilizer discharging control hole is provided on the upper wall of the strip-shaped fertilizer discharging pipe. A fertilizer discharging baffle is slidably installed within the fertilizer discharging control hole. The fertilizer discharging baffle is in sliding fit with the inner wall of the strip-shaped fertilizer discharging pipe. A linear motion actuator four is installed on the side wall of the material box, and the actuator end of the linear motion actuator four is connected to the fertilizer discharging baffle.

[0011] Further, a powder discharging control hole is penetratingly provided on the upper wall of the powder discharging pipe. A powder discharging baffle is slidably installed within the powder discharging control hole. The powder discharging baffle is in sliding fit with the inner wall of the powder discharging pipe. A linear motion actuator five is provided on the side wall of the material box, and the actuator end of the linear motion actuator is connected to the powder discharging baffle.

[0012] Wherein, the first cutter group includes a cutter shaft and fixing rings arrayed along the axial direction of the cutter shaft. The fixing rings are arranged equidistantly from the center of the cutter shaft width to both sides. Mounting seats are arrayed on the circumferential side wall of the fixing rings. A left rotary tillage cutter and a right rotary tillage cutter are respectively installed on both sides of each mounting seat through bolts. The left rotary tillage cutter and the right rotary tillage cutter are arranged in opposite directions. The left rotary tillage cutters are arrayed around the circumference of the fixing ring, and the right rotary tillage cutters are arrayed around the circumference of the fixing ring. The left rotary tillage cutters and the right rotary tillage cutters are arranged alternately left and right. The second cutter group has the same structure as the first cutter group.

[0013] Preferably, each fixing ring is circumferentially arranged with 3 left rotary tillage cutters and 3 right rotary tillage cutters.

[0014] Preferably, the left rotary tillage cutters and the right rotary tillage cutters of the first cutter group adopt straight-hook type rotary tillage cutters, and the left rotary tillage cutters and the right rotary tillage cutters of the second cutter group adopt curved blades. The blade head of the curved blade is arc-shaped and the outer arc is a long blade.

[0015] Wherein, the forward speed V of the first cutter group and the second cutter group T = 2.5 - 4 km / h, the rotational speed n of the cutter shaft 刀 = 200 - 300 r / min, and the soil cutting pitch S = 14 - 35 cm.

[0016] Furthermore, a discharge hole is provided at the bottom end of the horizontal stirring container; the fertilizer discharging device includes a material tank with a hollow upper wall and a fertilizer discharging valve. The horizontal stirring container is installed at the upper end of the material tank. The fertilizer discharging valve includes a material baffle and a linear motion actuator II. One side of the material tank is provided with a valve hole in a penetrating manner. The material baffle is slidably inserted into the material tank through the valve hole. The material baffle is slidably attached below the discharge hole. One end of the linear motion actuator II is hinged to the bottom wall of the material tank, and the other end of the linear motion actuator II is hinged to the material baffle. A fertilizer discharging hole is provided at the bottom end of the material tank, and the fertilizer discharging hole is located directly above the discharging port.

[0017] Furthermore, the discharging port is inclined. A valve groove is communicated with the inner wall of one side of the discharging port. A fertilizer application valve is provided in the valve groove. The fertilizer application valve includes a discharge baffle. An adjusting sliding hole is penetrated through the bottom wall of the valve groove. A sliding seat is provided at the bottom wall of the discharge baffle. The sliding seat slidably penetrates through the adjusting sliding hole. A linear motion actuator III is installed on the bottom wall of the frame. One end of the linear motion actuator III is hinged to the bottom wall of the frame, and the other end of the linear motion actuator III is hinged to the sliding seat.

[0018] Furthermore, the spiral ribbon stirring blade includes an inner spiral ribbon and an outer spiral ribbon provided outside the inner spiral ribbon, and the spiral directions of the inner spiral ribbon and the outer spiral ribbon are opposite.

[0019] Furthermore, the power transmission device includes a power box, a power input shaft, a main bevel gear, a first dividing bevel gear, and a second dividing bevel gear. The power box is provided at the upper end of the frame. The main bevel gear, the first dividing bevel gear, and the second dividing bevel gear are respectively rotatably provided in the power box. The first dividing bevel gear and the second dividing bevel gear are respectively rotatably provided on both sides of the main bevel gear. The first dividing bevel gear and the second dividing bevel gear are respectively meshed with both sides of the main bevel gear. The power input shaft rotatably penetrates through the power box and is coaxially connected to the main bevel gear. Axle brackets are symmetrically and fixedly installed on the upper wall of the frame, and the axle brackets are provided on both sides of the power box. The first output shaft and the second output shaft are respectively rotatably provided on both sides of the power box. One end of the first output shaft is rotatably installed on the axle bracket through a bearing, and the other end of the first output shaft rotatably penetrates through the power box and is coaxially connected to the first dividing bevel gear. One end of the second output shaft is rotatably installed on the axle bracket through a bearing, and the other end of the second output shaft rotatably penetrates through the power box and is coaxially connected to the second dividing bevel gear. The end of the power input shaft away from the power box is connected with a universal joint coupling for power input. The universal joint coupling serves as the power input end of the whole device, and the output shaft at the tail of the agricultural tractor serves as the power end and is connected to the universal joint coupling.

[0020] Preferably, a speed reducer is connected to the end of the stirring shaft, and a first belt drive is provided between the first output shaft and the speed reducer.

[0021] Among them, a second belt drive is provided between the second output shaft and the first cutter group, a third belt drive is provided between the first cutter group and the second cutter group, and a tensioning pulley for tensioning the second belt drive is provided on the machine frame. The second belt drive includes an input pulley two, an output pulley two, a transmission belt two and a tensioning pulley. The input pulley two is connected to the second output shaft, the output pulley two is connected to the first cutter group, a transmission through hole is provided through the machine frame, the transmission belt two is wound around the outer sides of the input pulley two and the output pulley two, and the middle part of the transmission belt two passes through the transmission through hole. The tensioning pulley is slidably arranged in the transmission through hole, and a tensioning spring is provided between the tensioning pulley and the side wall of the transmission through hole.

[0022] Furthermore, a first linear motion actuator is provided between the bottom wall of the machine frame and the lifting chassis, and the lifting chassis is installed on the bottom wall of the machine frame through the first linear motion actuator.

[0023] Furthermore, a protective cover is provided outside the power transmission device, the stirring device and the fertilizer discharging device. An avoidance hole is provided at the front end of the protective cover, and the universal joint coupling passes through the avoidance hole and is connected to the power input shaft.

[0024] The beneficial effects achieved by the present invention with the above structure are as follows: 1. The aggregate box, stirring device, fertilizer discharging device and rotary tillage and soil covering of the present invention are integrated, realizing high-efficiency and fully automatic stirring of biochar and chemical fertilizers, solving the problem of mixing chemical fertilizers and soil. The whole device has a high degree of automation, automatically fertilizes during the process of walking on the rotary tillage soil, can realize the full mixing of biochar and chemical fertilizers, and deeply penetrates organic fertilizers and biochar into the soil layer and sends them into the tillage layer, and can realize functions such as mixed fertilization of charcoal-based fertilizers and traditional fertilizers, variable rate fertilization, etc.

[0025] 2. Aiming at the problem of mixing powder and chemical fertilizer particles, the powder and chemical fertilizer particles are first preliminarily homogenized and then integrally mixed. The reciprocating lifting assembly is connected to the windshield and drives the windshield to reciprocate up and down, adjusting the depth of the windshield inserted into the material homogenizing cavity, and then adjusting the air volume sent into the material homogenizing cavity by the material homogenizing air pump, so that the air volume circulation in the material homogenizing cavity changes from large to small and then to large. Different air volumes can disperse the powder to different distances, so as to facilitate the uniform dispersion of the powder in the stirring container. At the same time, the relatively arranged air inlets can make the air flow form convection in the material homogenizing cavity, so that the powder is dispersed more evenly. Since the strip-shaped fertilizer discharging pipe is strip-shaped, the chemical fertilizers in the fertilizer storage cavity can be evenly poured into the horizontal stirring container, so as to realize the preliminary uniform distribution of chemical fertilizer particles and biochar powder. Then, using the structure with different inner and outer spiral directions in the horizontal stirring container, the biochar and chemical fertilizers are fully mixed and stirred, and can be evenly mixed in a short time.

[0026] 3. A double - type rotary tiller that combines fertilization and rotary tillage with soil covering is provided. It can carry out rotary tillage and soil fragmentation before and after fertilization, deeply mix the fully - mixed biochar, chemical fertilizer and soil, so that a large amount of effective elements in the chemical fertilizer can volatilize and be completely absorbed by the crop roots. Before sowing, it can effectively increase soil fertility and reduce production costs. The first cutter group device completes rotary tillage, soil fragmentation and stubble removal operations, and then drives the second cutter group to rotate and till through belt drive two, thus realizing the full mixing of soil and chemical fertilizer and completing the entire fertilization process.

[0027] 4. Aiming at the disadvantages in the existing lateral - drive scheme, such as residual wheel ruts behind the wheel - pressed plow, serious missed tillage, uneven force in the offset configuration of the unit, poor operation and straight - running performance, etc., a middle - belt drive structure with uniform overall force and good rigidity is proposed. It can increase the working width, make the force received uniform, thereby improving the rationality of cooperation with hand - tractors. Since this structure is compact and convenient for symmetric distribution, it can reduce power consumption and costs. Compared with gear drive, this structure is suitable for occasions with large center distances, can operate in harsh environments such as low speed and heavy load, has elasticity, good buffering and shock - absorption effects, low noise and vibration, and provides a stable working effect.

[0028] 5. The first cutter group selects straight - hook rotary tillage knives, which can throw chemical fertilizers onto the ground and penetrate deeper soil layers. In this way, the chemical fertilizers can be better plowed into the tillage layer. In addition, using straight - hook rotary tillage knives has a good effect on breaking the tillage layer, especially for soils with high viscosity and poor water permeability. The second cutter group selects curved knives, which have good cutting performance. The plowed soil blocks are relatively small, but the tillage depth is about 15 cm. It can fully combine the organic fertilizers and soil scattered on the ground, turn the chemical fertilizers into the tillage layer, and the distribution is relatively dense, and the situation of burning seedlings is not likely to occur.

[0029] 6. Through comprehensive analysis, a relatively reasonable and advanced arrangement scheme is proposed. It is arranged at equal intervals with the center of the width as the reference. Three rotary tillage knives are arranged at equal intervals in the circumferential direction, alternating left and right, and fixed on the cutter roll through bolts. The rotary tillage knives on the cutter shaft continuously and alternately enter the soil, and there are no gaps during the rotation process, and the uniformity is good. Taking the center of the width as a reference, the left and right are divided into several segments, showing uniformity and symmetry. The left - hand rotary tillage knives and right - hand rotary tillage knives are alternately and symmetrically buried into the soil from both sides of the width - center reference line in turn, so that they are balanced axially and have good stability. The size of the soil blocks obtained is relatively uniform, and it has good crushing ability. The blade teeth of adjacent two units work alternately, which increases the axial interval between the continuously entering soil blades. Therefore, the torque applied on the cutter shaft and the torque distribution are wider. Description of the Drawings

[0030] Figure 1Schematic diagram of the structure of an agricultural compound fertilizer applicator provided by the present invention; Figure 2 Schematic diagram of the structure of another perspective of an agricultural compound fertilizer applicator provided by the present invention; Figure 3 For Figure 2 Partial enlarged view of part A in Figure 4 Schematic diagram of the structure of an agricultural compound fertilizer applicator provided by the present invention with the protective cover removed; Figure 5 Top view of an agricultural compound fertilizer applicator provided by the present invention with the protective cover removed; Figure 6 Cross-sectional view of an agricultural compound fertilizer applicator provided by the present invention with the protective cover removed; Figure 7 For Figure 6 Partial enlarged view of part B in Figure 8 For Figure 6 Partial enlarged view of part C in Figure 9 Schematic diagram of the structure of the stirring device, fertilizer discharging device, material leveling chamber and variable-speed convection type material leveling mechanism; Figure 10 For Figure 9 Partial enlarged view of part D in Figure 11 Schematic diagram of the structure of another perspective of the stirring device, fertilizer discharging device, material leveling chamber and variable-speed convection type material leveling mechanism; Figure 12 Cross-sectional view of the stirring device, fertilizer discharging device, material leveling chamber and variable-speed convection type material leveling mechanism; Figure 13 Schematic diagram of the combined structure of the stirring shaft and the spiral ribbon stirring blade; Figure 14 Schematic diagram of the combined structure of the first cutter group, the second cutter group, belt drive two and belt drive three; Figure 15 Cross-sectional view of the exhaust pipe.

[0031] Among them, 1. Frame, 2. Feed bin, 3. Stirring device, 4. Double-tillage blade rotary tillage device, 5. Traveling wheel, 6. Towing frame, 7. Power transmission device, 8. Fertilizer discharging device, 9. Lifting chassis, 10. First cutter group, 11. Second cutter group, 12. Discharge port, 13. Horizontal stirring container, 14. Stirring shaft, 15. Screw-rib stirring blade, 16. Connecting rod, 17. First output shaft, 18. Second output shaft, 19. Powder storage chamber, 20. Fertilizer storage chamber, 21. Material guiding plate, 22. Strip-shaped fertilizer discharging pipe, 23. Feed hopper, 24. Material leveling chamber, 25. Powder discharging pipe, 26. Feed inlet, 27. Variable-speed convection type material leveling mechanism, 28. Material leveling air pump, 29. Windshield, 30. Air inlet, 31. Air supply hose, 32. Air regulating sliding hole, 33. Reciprocating lifting assembly, 34. Exhaust pipe, 35. Filter screen, 36. Spring, 37. Beating part, 38. Weight sensor, 39. Controller, 40. Display, 41. Square frame, 42. Eccentric disc, 43. Slide carriage, 44. Lower fertilizer control hole, 45. Fertilizer discharging baffle, 46. Linear motion actuator four, 47. Powder discharging control hole, 48. Powder discharging baffle, 49. Linear motion actuator five, 50. Cutter shaft, 51. Fixed ring, 52. Left-handed rotary tillage blade, 53. Right-handed rotary tillage blade, 54. Material discharging hole, 55. Material trough, 56. Fertilizer discharging valve, 57. Material baffle, 58. Linear motion actuator two, 59. Valve hole, 60. Fertilizer discharging hole, 61. Valve groove, 62. Discharge baffle, 63. Adjusting sliding hole, 64. Slide base, 65. Linear motion actuator three, 66. Inner screw-rib, 67. Outer screw-rib, 68. Power box, 69. Power input shaft, 70. Main bevel gear, 71. First dividing bevel gear, 72. Second dividing bevel gear, 73. Shaft bracket, 74. Universal joint coupling, 75. Reducer, 76. Belt drive one, 77. Belt drive two, 78. Tensioning pulley, 79. Tensioning spring, 80. Linear motion actuator one, 81. Control system, 82. Protective cover, 83. Avoidance hole, 84. Belt drive three.

[0032] The attached drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0035] As Figures 1-15 shown, an agricultural mixed fertilization machine provided by the present invention includes a frame 1, a material box 2, a stirring device 3 and a double-tiller rotary tillage device 4. A traveling wheel 5 is installed below the frame 1 and serves as a traveling mechanism for traveling. A traction frame 6 is hingedly installed at the front end of the frame 1, and the traction frame 6 is used to connect with an agricultural tractor. A power transmission device 7 is provided on the upper wall of the frame 1, and the output shaft at the tail of the agricultural tractor serves as a power end and is connected to the power transmission device 7, which can achieve quick connection with various types of agricultural tractors, and the connection is convenient and fast; the stirring device 3 and the material box 2 are arranged on the upper wall of the frame 1, the double-tiller rotary tillage device 4 is arranged on the bottom wall of the frame 1, and a fertilizer discharging device 8 is arranged between the stirring device 3 and the double-tiller rotary tillage device 4; The double-tiller rotary tillage device 4 includes a lifting chassis 9 and a first cutter group 10 and a second cutter group 11 rotatably arranged in the lifting chassis 9. A discharge port 12 communicating with the fertilizer discharging device 8 is provided through the frame 1, and the discharge port 12 is arranged between the first cutter group 10 and the second cutter group 11. Rotary tillage and soil crushing are carried out before and after fertilization to deeply mix the fully mixed biochar and chemical fertilizer with the soil. In this way, the effective elements in the chemical fertilizer can volatilize in large amounts and can be completely absorbed by the roots of crops. Before sowing, it can effectively increase soil fertility and reduce production costs. The first cutter group 10 is used for stubble removal and soil crushing operations, and the second cutter group 11 is used for mixing soil and organic fertilizer; The stirring device 3 is arranged above the fertilizer discharging device 8. The stirring device 3 includes a horizontal stirring container 13, a stirring shaft 14 and spiral ribbon stirring blades 15. The stirring shaft 14 rotatably penetrates through the horizontal stirring container 13. Connecting rods 16 are respectively arranged at both ends of the stirring shaft 14. The spiral ribbon stirring blades 15 are wound around the outer side of the stirring shaft 14 through the connecting rods 16, and the spiral ribbon stirring blades 15 are rotatably arranged in the horizontal stirring container 13 through the stirring shaft 14; The power transmission device 7 is provided with a first output shaft 17 and a second output shaft 18. The first output shaft 17 is in transmission connection with the stirring shaft 14, and the second output shaft 18 is in transmission connection with the double-tiller rotary tillage device 4; The material box 2 includes a powder storage chamber 19 and a fertilizer storage chamber 20, wherein the powder storage chamber 19 is arranged on a side of the material box 2 close to the horizontal mixing container 13, the powder storage chamber 19 is arranged above the horizontal mixing container 13, and the fertilizer storage chamber 20 is arranged below the powder storage chamber 19 and on a side of the material box 2 away from the horizontal mixing container 13, and the bottom walls of the powder storage chamber 19 and the fertilizer storage chamber 20 are respectively provided with an inclined material guide plate 21, and a strip fertilizer discharge pipe 22 is connected between the bottom end of the fertilizer storage chamber 20 and the horizontal mixing container 13, and the upper walls of the powder storage chamber 19 and the fertilizer storage chamber 20 are respectively connected with a feed hopper 23, and the length of the strip fertilizer discharge pipe 22 is slightly smaller than the length of the horizontal mixing container 13; The upper end of the horizontal stirring container 13 is connected to a mixing chamber 24, a powder discharge pipe 25 is symmetrically arranged at the bottom of the powder storage chamber 19, and a feed port 26 is symmetrically arranged on the side wall of the mixing chamber 24. The powder discharge pipe 25 is connected to the feed port 26, and the powder storage chamber 19 is connected to the mixing chamber 24 through the powder discharge pipe 25. The biochar powder is fed into the mixing chamber 24 through the feed port 26 through the symmetrically arranged powder discharge pipe 25; The two ends of the sparging chamber 24 are oppositely provided with variable speed convection sparging mechanisms 27, and the variable speed convection sparging mechanism 27 includes a sparging air pump 28 and a wind shield 29. The sparging air pump 28 is installed on the upper wall of the frame 1, and an air inlet 30 is provided at the end of the sparging chamber 24. An air supply hose 31 is provided between the sparging air pump 28 and the air inlet 30. The sparging air pump 28 blows air into the sparging chamber 24 through the air inlet 30. The upper wall of the sparging chamber 24 is symmetrically provided with air adjustment sliding holes 32. The wind shield 29 is slidably arranged in the air adjustment port. The wind shield 29 is slidably fitted with the inner wall of the sparging chamber 24. The wind shield 29 is arranged at the feed inlet 26 and Between the air inlet 30, a reciprocating lifting component 33 is transmission-connected on the stirring shaft 14. The reciprocating lifting component 33 is connected to the wind shield 29 and drives the wind shield 29 to lift and lower back and forth, so as to adjust the depth of the wind shield 29 inserted into the material mixing chamber 24, and then adjust the air volume sent into the material mixing chamber 24 by the material mixing air pump 28, so that the air volume in the material mixing chamber 24 circulates from large to small and then to large. Different air volumes can blow the powder to different distances, so as to make it easier to evenly disperse the powder in the stirring container. At the same time, the relatively arranged air inlets 30 can make the airflow form convection in the material mixing chamber 24, so that the powder is dispersed more evenly.

[0036] An exhaust pipe 34 is provided through the upper wall of the material mixing chamber 24, and a filter screen 35 is provided inside the exhaust pipe 34. A flapping piece 37 is installed inside the exhaust pipe 34 through a spring 36. The flapping piece 37 is arranged above the filter screen 35, and the filter screen 35 filters the powder in the airflow. When the device moves, the spring 36 drives the flapping piece 37 to swing up and down, and the flapping piece 37 flaps the filter screen 35 to prevent the filter screen 35 from being blocked.

[0037] In some embodiments, a weight sensor 38 is provided on the bottom wall of the material guide plate 21, a controller 39 is provided on the frame 1, and a display 40 is provided on the side wall of the material box. The weight sensor 38 facilitates detecting the weight of the materials in the powder storage cavity 19 and the fertilizer storage cavity 20, thereby detecting the discharge amount of the materials, and facilitating the precise control of the ratio of biochar powder and chemical fertilizer.

[0038] The reciprocating lifting assembly 33 includes a square frame 41 and an eccentric disc 42 rotatably disposed within the square frame 41. The eccentric disc 42 is inscribed within the square frame 41. The eccentric disc 42 is fixedly connected to the stirring shaft 14, and the stirring shaft 14 eccentrically penetrates the eccentric disc 42. A slide carriage 43 arranged in an inverted U shape is provided on the square frame 41. The slide carriage 43 is slidably clamped outside the material leveling cavity 24, and the slide carriage 43 is connected to the wind deflector 29. By driving the eccentric disc 42 to rotate through the stirring shaft 14, the eccentric disc 42 drives the slide carriage 43 to reciprocate up and down through the square frame 41, and the slide carriage 43 drives the wind deflector 29 to reciprocate up and down.

[0039] A fertilizer discharge control hole 44 is provided on the upper wall of the strip-shaped fertilizer discharge pipe 22. A fertilizer discharge baffle 45 is slidably installed within the fertilizer discharge control hole 44, and the fertilizer discharge baffle 45 is slidably fitted to the inner wall of the strip-shaped fertilizer discharge pipe 22. A linear motion actuator four 46 is installed on the side wall of the material box 2, and the actuator end of the linear motion actuator four 46 is connected to the fertilizer discharge baffle 45. By the linear movement of the linear motion actuator four 46, the fertilizer discharge baffle 45 is driven to insert into or pull out of the strip-shaped fertilizer discharge pipe 22, controlling the on-off of the strip-shaped fertilizer discharge pipe 22, and further controlling the fertilizer discharge.

[0040] A powder discharge control hole 47 is provided through the upper wall of the powder discharge pipe 25. A powder discharge baffle 48 is slidably installed within the powder discharge control hole 47, and the powder discharge baffle 48 is slidably fitted to the inner wall of the powder discharge pipe 25. A linear motion actuator five 49 is provided on the side wall of the material box 2, and the actuator end of the linear motion actuator is connected to the powder discharge baffle 48.

[0041] The first cutter group 10 includes a cutter shaft 50 and fixing rings 51 arranged in an axial array along the cutter shaft 50. The fixing rings 51 are arranged equidistantly from the center of the width of the cutter shaft 50 to both sides. Mounting seats are arranged in a circumferential array on the circumferential side wall of the fixing rings 51. A left rotary tillage blade 52 and a right rotary tillage blade 53 are respectively installed on both sides of the mounting seat through bolts. The left rotary tillage blade 52 and the right rotary tillage blade 53 are arranged in opposite directions. The left rotary tillage blades 52 are arranged in a circumferential array around the fixing ring 51, and the right rotary tillage blades 53 are arranged in a circumferential array around the fixing ring 51. The left rotary tillage blades 52 and the right rotary tillage blades 53 are arranged alternately left and right. The second cutter group 11 has the same structure as the first cutter group 10.

[0042] In this embodiment, each fixing ring 51 is circumferentially arranged with 3 left rotary tillage blades 52 and 3 right rotary tillage blades 53.

[0043] The left rotary tillage blades 52 and right rotary tillage blades 53 of the first blade group 10 adopt straight-hook type rotary tillage blades, and the left rotary tillage blades 52 and right rotary tillage blades 53 of the second blade group 11 adopt curved blades. The head of the blade of the curved blade is arc-shaped and the outer arc is a long edge. The straight-hook type rotary tillage blade can throw chemical fertilizers onto the ground and penetrate deeper soil layers. In this way, the chemical fertilizers can be better plowed into the tillage layer. In addition, the use of straight-hook type rotary tillage blades has a good effect on breaking the tillage layer, especially for soil with high viscosity and poor water permeability, and can play a better role. The curved blade has good cutting performance, and the plowed soil blocks are relatively small, but the tillage depth is very small, about 15 cm. It can fully combine the organic fertilizers sprinkled on the ground with the soil, turn the chemical fertilizers to the tillage layer, and the distribution is relatively dense, and the situation of burning seedlings is not likely to occur.

[0044] In this embodiment, the curved blade adopts IIT195 series blades, uses an Archimedean spiral as the side edge, the transverse and bending radius r = 30, and the bending angle Qmax = 37°, and the cutting performance is better; the forward speed V of the first blade group 10 and the second blade group 11 T = 2.5 - 4 km / h, the rotational speed n of the knife shaft 50 刀 = 200 - 300 r / min, and the soil cutting pitch S = 14 - 35 cm.

[0045] A blanking hole 54 is provided at the bottom end of the horizontal stirring container 13, and the blanking hole 54 is convenient for blanking the mixed organic fertilizer.

[0046] The fertilizer discharging device 8 includes a material tank 55 with a hollow upper wall and a fertilizer discharging valve 56. The horizontal stirring container 13 is installed at the upper end of the material tank 55. The fertilizer discharging valve 56 includes a material baffle 57 and a linear motion actuator two 58. A valve hole 59 is provided through one side of the material tank 55. The material baffle 57 is slidably inserted into the material tank 55 through the valve hole 59. The material baffle 57 is slidably attached below the blanking hole 54. One end of the linear motion actuator two 58 is hinged to the bottom wall of the material box 2, and the other end of the linear motion actuator two 58 is hinged to the material baffle 57. A fertilizer discharging hole 60 is provided at the bottom end of the material tank 55. The fertilizer discharging hole 60 is provided directly above the discharging port 12. Through the linear movement of the linear motion actuator two 58, the material baffle 57 is driven to insert into or withdraw from the material tank 55, which is convenient for controlling the opening and closing of the blanking hole 54.

[0047] The discharge port 12 is inclined, and a valve groove 61 is communicated and provided on the inner wall of one side of the discharge port 12. A fertilizing valve is provided in the valve groove 61. The fertilizing valve includes a discharge baffle 62. An adjusting sliding hole 63 is penetrated through the bottom wall of the valve groove 61. A sliding seat 64 is provided on the bottom wall of the discharge baffle 62. The sliding seat 64 slidably penetrates through the adjusting sliding hole 63. A linear motion actuator three 65 is installed on the bottom wall of the frame 1. One end of the linear motion actuator three 65 is hinged to the bottom wall of the frame 1, and the other end of the linear motion actuator three 65 is hinged to the sliding seat 64. Through the linear movement of the linear motion actuator three 65, the sliding seat 64 and the discharge baffle 62 are driven to slide out into the discharge port 12 along the valve groove 61, partially or completely blocking the discharge port 12, thereby adjusting the fertilizer discharge amount of the discharge port 12.

[0048] The spiral ribbon stirring blade 15 includes an inner spiral ribbon 66 and an outer spiral ribbon 67 provided outside the inner spiral ribbon 66. The inner spiral ribbon 66 and the outer spiral ribbon 67 have opposite spiral directions. The outer wall of the outer spiral ribbon 67 is attached to the inner wall of the horizontal stirring container 13. By adopting a structure with different inner and outer spiral directions, the biochar and chemical fertilizers are fully mixed and stirred.

[0049] The power transmission device 7 includes a power box 68, a power input shaft 69, a main bevel gear 70, a first branch bevel gear 71, and a second branch bevel gear 72. The power box 68 is provided at the upper end of the frame 1. The main bevel gear 70, the first branch bevel gear 71, and the second branch bevel gear 72 are respectively rotatably provided in the power box 68. The first branch bevel gear 71 and the second branch bevel gear 72 are respectively rotatably provided on both sides of the main bevel gear 70. The first branch bevel gear 71 and the second branch bevel gear 72 are respectively meshed with both sides of the main bevel gear 70. The power input shaft 69 rotatably penetrates through the power box 68 and is coaxially connected to the main bevel gear 70. Axle brackets 73 are symmetrically and fixedly installed on the upper wall of the frame 1. The axle brackets 73 are provided on both sides of the power box 68. The first output shaft 17 and the second output shaft 18 are respectively rotatably provided on both sides of the power box 68. One end of the first output shaft 17 is rotatably installed on the axle bracket 73 through a bearing. The other end of the first output shaft 17 rotatably penetrates through the power box 68 and is coaxially connected to the first branch bevel gear 71. One end of the second output shaft 18 is rotatably installed on the axle bracket 73 through a bearing. The other end of the second output shaft 18 rotatably penetrates through the power box 68 and is coaxially connected to the second branch bevel gear 72. One end of the power input shaft 69 away from the power box 68 is connected with a universal joint coupling 74 for power input. The universal joint coupling 74 serves as the power input end of the whole device. The output shaft at the tail of the agricultural tractor serves as the power end and is connected to the universal joint coupling 74. The power output by the tractor is transmitted to the power input shaft 69 through the universal joint coupling 74, and the power is respectively transmitted to the first output shaft 17 and the second output shaft 18 through the first branch bevel gear 71 and the second branch bevel gear 72, respectively driving the stirring device 3 and the double-tiller rotary tilling device 4 to work.

[0050] A speed reducer 75 is connected to the end of the stirring shaft 14. A first belt drive 76 is provided between the first output shaft 17 and the speed reducer 75. The first belt drive 76 includes a first input pulley, a first output pulley, and a first transmission belt. The first input pulley is coaxially and fixedly connected to the first output shaft 17. The first output pulley is connected to the speed reducer 75. The first transmission belt is wound around the outer sides of the first input pulley and the first output pulley.

[0051] A second belt drive 77 is provided between the second output shaft 18 and the first cutter group 10. A third belt drive 84 is provided between the first cutter group 10 and the second cutter group 11. The third belt drive 84 includes a third input pulley, a third output pulley, and a third transmission belt. The third input pulley is connected to the cutter shaft 50 of the first cutter group 10. The third output pulley is connected to the cutter shaft 50 of the second cutter group 11. The third transmission belt is wound around the outer sides of the third input pulley and the third output pulley. A tension pulley 78 for tensioning the second belt drive 77 is provided on the frame 1.

[0052] The second belt drive 77 includes a second input pulley, a second output pulley, a second transmission belt, and a tension pulley 78. The second input pulley is connected to the second output shaft 18. The second output pulley is connected to the first cutter group 10. A transmission through hole is provided through the frame 1. The second transmission belt is wound around the outer sides of the second input pulley and the second output pulley. The middle part of the second transmission belt passes through the transmission through hole. The tension pulley 78 is slidably arranged in the transmission through hole. A tension spring 79 is provided between the tension pulley 78 and the side wall of the transmission through hole. The tension pulley 78 and the tension spring 79 are convenient for automatically tensioning the second transmission belt according to the height of the double-tiller rotary tillage device 4.

[0053] A first linear motion actuator 80 is provided between the bottom wall of the frame 1 and the lifting chassis 9. The lifting chassis 9 is installed on the bottom wall of the frame 1 through the first linear motion actuator 80. The first linear motion actuator 80 adjusts the height of the lifting chassis 9, thereby adjusting the height of the double-tiller rotary tillage device 4, which is convenient for rotary tillage operations.

[0054] Any one of a cylinder or a hydraulic cylinder is adopted for the first linear motion actuator 80, the second linear motion actuator 58, the third linear motion actuator 65, the fourth linear motion actuator 46, and the fifth linear motion actuator 49. A control system 81 for respectively driving the first linear motion actuator 80, the second linear motion actuator 58, the third linear motion actuator 65, the fourth linear motion actuator 46, and the fifth linear motion actuator 49 is provided on the frame 1. The control system 81 is electrically connected to the power system of the tractor. The control system 81 is a prior art and will not be described in detail here. The power system of the tractor supplies power to the device.

[0055] A protective cover 82 is provided outside the power transmission device 7, the stirring device 3 and the fertilizer discharging device 8. An avoidance hole 83 is provided at the front end of the protective cover 82, and the universal joint coupling 74 passes through the avoidance hole 83 and is connected to the power input shaft 69.

[0056] During specific use, connect the towing frame 6 to the agricultural tractor, and move the machinery by towing it with the agricultural tractor. The output shaft at the rear of the agricultural tractor serves as the power end and is connected to the power transmission device 7. It can achieve rapid connection with various types of agricultural tractors, and the connection is convenient and fast. Pour biochar powder and chemical fertilizers into the powder storage chamber 19 and the fertilizer storage chamber 20 respectively through the feed hopper 23. The biochar powder and chemical fertilizers are formulated in proportion. Start the material leveling air pump 28. The output shaft at the rear of the agricultural tractor serves as the power end and is connected to the universal joint coupling 74. The power output by the tractor is transmitted to the power input shaft 69 through the universal joint coupling 74, and the power is transmitted to the first output shaft 17 and the second output shaft 18 respectively through the first dividing bevel gear 71 and the second dividing bevel gear 72, driving the stirring device 3 and the double-tiller rotary tilling device 4 to work respectively. The first output shaft 17 drives the stirring shaft 14 to rotate through the first belt drive 76 and the speed reducer 75. Drive the powder discharge baffle 48 to move upward by controlling the linear motion actuator five 49 and extract it from the powder discharge pipe 25. At this time, the powder storage chamber 19 is communicated with the material leveling chamber 24 through the powder discharge pipe 25, and the biochar powder is discharged to both ends of the material leveling chamber 24 through the powder discharge pipe 25. Drive the fertilizer discharge baffle 45 to pull out the strip-shaped fertilizer discharge pipe 22 through the linear movement of the linear motion actuator four 46. The fertilizer storage chamber 20 is communicated with the horizontal stirring container 13 through the strip-shaped fertilizer discharge pipe 22, and chemical fertilizers are fed into the horizontal stirring container 13 through the strip-shaped fertilizer discharge pipe 22. Since the strip-shaped fertilizer discharge pipe 22 is strip-shaped, the chemical fertilizers in the fertilizer storage chamber 20 can be evenly poured into the horizontal stirring container 13. The material leveling air pump 28 blows air into the material leveling chamber 24 through the air inlet 30, so as to blow the biochar powder falling at the feed port 26 towards the middle of the material leveling chamber 24. At the same time, the stirring shaft 14 drives the eccentric disc 42 to rotate. The eccentric disc 42 drives the carriage 43 to reciprocate up and down through the square frame 41. The carriage 43 drives the wind deflector 29 to reciprocate up and down, adjusting the depth of the wind deflector 29 inserted into the material leveling chamber 24, and then adjusting the air volume of the material leveling air pump 28 fed into the material leveling chamber 24, so that the air volume circulation in the material leveling chamber 24 changes from large to small and then to large. Different air volumes can disperse the powder materials to different distances, so as to facilitate the uniform dispersion of the powder materials in the stirring container. At the same time, the relatively arranged air inlets 30 can make the air flow form a convection in the material leveling chamber 24, so that the powder materials are dispersed more evenly. The preliminary uniform distribution of fertilizer particles and biochar powder is realized through the strip-shaped fertilizer discharge pipe 22 and the variable-speed convective material leveling mechanism 27. The stirring shaft 14 drives the spiral ribbon stirring blades 15 to rotate in the horizontal stirring container 13 to further stir and mix the chemical fertilizers and biochar powder falling into the horizontal stirring container 13. The inner spiral ribbon 66 rotates to convey the materials to the outside, and the outer spiral ribbon 67 rotates to gather the materials to the inside. Under the convective movement of the double-layer spiral ribbons, a low-power and high-efficiency mixing environment is formed. The spiral ribbon stirring blades 15 installed on the stirring shaft 14 drive the materials in the barrel, so that the stirrer turns the materials in the barrel within the largest range.When the stirring device 3 is working, the inner spiral belt 66 moves to drive the materials near the axis to rotate around the axis, and axially pushes from the inside to both sides. The outer spiral belt 67 moves to drive the materials near the barrel wall to rotate around the axis, and axially pushes from both sides to the inside, which can achieve uniform mixing in a relatively short time. By the operation steps of initially homogenizing the biochar powder and fertilizer particles and then mixing them as a whole, the mixing efficiency can be effectively improved. After the fertilizer is mixed evenly, the linear motion actuator two 58 is controlled to drive the material baffle 57 to move and draw out the material chute 55, so that there is no obstruction below the blanking hole 54, and the evenly mixed fertilizer falls from the blanking port into the material chute 55. When soil rotary tillage and fertilization spreading are carried out, the height of the lifting chassis 9 is adjusted by the linear motion actuator one 80, so that the first cutter group 10 and the second cutter group 11 are inserted into the ground. Through the linear movement of the linear motion actuator three 65, the sliding seat 64 and the discharge baffle 62 are driven to slide along the valve groove 61 and retract into the valve groove 61, so that the discharge port 12 is partially or completely exposed, and the mixed fertilizer falls into the farmland between the first cutter group 10 and the second cutter group 11 through the discharge port 12. Rotary tillage and soil crushing are carried out before and after fertilization, and the fertilizer discharge amount can be adjusted by adjusting the shielding degree of the discharge baffle 62 on the discharge port 12. The second output shaft 18 drives the first cutter group 10 to rotate for rotary tillage through the belt drive two 77, and the first cutter group 10 drives the second cutter group 11 to rotate for rotary tillage through the belt drive three 84. The first cutter group 10 is used for stubble removal and soil crushing operations, and the second cutter group 11 is used for mixing soil and organic fertilizer. Specifically in use, rotary tillage and fertilization can also be carried out while stirring and mixing.,

[0057] The aggregate box 2, the stirring device 3, the fertilizer discharging device 8 and the rotary tillage and soil covering of the present invention are integrated, realizing high-efficiency and fully automatic stirring of biochar and chemical fertilizers, solving the problem of mixing chemical fertilizers and soil. The whole device has a high degree of automation and automatically fertilizes during the process of walking on the rotary tillage soil.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0059] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An agricultural mixed fertilization machine, characterized in that: It includes a frame, a material box, a stirring device and a double-tiller rotary tillage device. Traveling wheels are installed under the frame. The front end of the frame is hingedly installed with a traction frame. A power transmission device is provided on the upper wall of the frame. The stirring device and the material box are arranged on the upper wall of the frame, and the double-tiller rotary tillage device is arranged on the bottom wall of the frame. A fertilizer discharging device is arranged between the stirring device and the double-tiller rotary tillage device; The double-tiller rotary tillage device includes a lifting chassis and a first cutter group and a second cutter group rotatably arranged in the lifting chassis. A discharge port communicating with the fertilizer discharging device is penetrated through the frame, and the discharge port is arranged between the first cutter group and the second cutter group; The power transmission device is provided with a first output shaft and a second output shaft. The first output shaft is in transmission connection with the stirring device, and the second output shaft is in transmission connection with the double-tiller rotary tillage device; The material box includes a powder storage chamber and a fertilizer storage chamber. The powder storage chamber is arranged on one side of the material box close to the horizontal stirring container, and the powder storage chamber is arranged above the horizontal stirring container. The fertilizer storage chamber is arranged below the powder storage chamber and on the side of the material box away from the horizontal stirring container. Inclined guide plates are respectively arranged on the bottom walls of the powder storage chamber and the fertilizer storage chamber. A strip-shaped fertilizer discharging pipe is communicated between the bottom end of the fertilizer storage chamber and the horizontal stirring container. Feed hoppers are respectively communicated with the upper walls of the powder storage chamber and the fertilizer storage chamber; A material leveling chamber is communicated with the upper end of the horizontal stirring container. Powder discharging pipes are symmetrically arranged at the bottom of the powder storage chamber. Feed ports are symmetrically arranged on the side walls of the material leveling chamber. The powder discharging pipes are communicated with the feed ports. The powder storage chamber is communicated with the material leveling chamber through the powder discharging pipes. Variable-speed convective material leveling mechanisms are oppositely arranged at both ends of the material leveling chamber. The variable-speed convective material leveling mechanism includes a material leveling air pump and a wind baffle. The material leveling air pump is installed on the upper wall of the frame. An air inlet is arranged at the end of the material leveling chamber. A blowing hose is communicated between the material leveling air pump and the air inlet. The material leveling air pump blows air into the material leveling chamber through the air inlet. Adjusting air holes are symmetrically arranged on the upper wall of the material leveling chamber. The wind baffle is slidably arranged in the adjusting air holes, and the wind baffle is slidably attached to the inner wall of the material leveling chamber. The wind baffle is arranged between the feed port and the air inlet. The stirring device is in transmission connection with a reciprocating lifting assembly, and the reciprocating lifting assembly is connected with the wind baffle and drives the wind baffle to reciprocate up and down to adjust the depth of the wind baffle inserted into the material leveling chamber.

2. The agricultural mixed fertilization machine according to claim 1, characterized in that: A first linear motion actuator is arranged between the bottom wall of the frame and the lifting chassis. The lifting chassis is installed on the bottom wall of the frame through the first linear motion actuator. The first cutter group includes a cutter shaft and fixing rings axially arrayed along the cutter shaft. The fixing rings are equally spaced from the center of the cutter shaft width to both sides. Mounting seats are arrayed on the circumferential side walls of the fixing rings. A left rotary tiller and a right rotary tiller are respectively installed on both sides of the mounting seat through bolts. The left rotary tiller and the right rotary tiller are arranged in the opposite direction. The left rotary tillers are circumferentially arrayed around the fixing ring, and the right rotary tillers are circumferentially arrayed around the fixing ring. The left rotary tillers and the right rotary tillers are alternately arranged left and right. The second cutter group has the same structure as the first cutter group.

3. The agricultural mixed fertilizer applicator according to claim 2, characterized in that: The stirring device is arranged above the fertilizer discharging device. The stirring device includes a horizontal stirring container, a stirring shaft and spiral ribbon stirring blades. The stirring shaft rotates through the horizontal stirring container. Connecting rods are respectively arranged at both ends of the stirring shaft. The spiral ribbon stirring blades are wound around the outer side of the stirring shaft through the connecting rods, and the spiral ribbon stirring blades are arranged in the horizontal stirring container by rotating the stirring shaft. The spiral ribbon stirring blades include an inner spiral ribbon and an outer spiral ribbon arranged outside the inner spiral ribbon, and the inner spiral ribbon and the outer spiral ribbon have opposite spiral directions.

4. The agricultural mixed fertilization machine according to claim 3, characterized in that: The left and right rotary tillage blades of the first cutter group adopt straight-hook type rotary tillage blades, and the left and right rotary tillage blades of the second cutter group adopt curved blades. The blade head of the curved blade is arc-shaped and the outer arc is a long blade.

5. The agricultural mixed fertilization machine according to claim 4, characterized in that: The reciprocating lifting assembly includes a square frame and an eccentric disc rotatably arranged in the square frame. The eccentric disc is inscribed in the square frame. The eccentric disc is fixedly arranged on the stirring shaft, and the stirring shaft eccentrically penetrates through the eccentric disc. A sliding frame arranged in an inverted U shape is arranged on the square frame. The sliding frame is slidably clamped outside the material leveling cavity, and the sliding frame is connected to the wind shield.

6. The agricultural mixed fertilization machine according to claim 5, characterized in that: The power transmission device includes a power box, a power input shaft, a main bevel gear, a first dividing bevel gear and a second dividing bevel gear. The power box is arranged at the upper end of the frame. The main bevel gear, the first dividing bevel gear and the second dividing bevel gear are respectively rotatably arranged in the power box. The first dividing bevel gear and the second dividing bevel gear are respectively arranged on both sides of the main bevel gear. The first dividing bevel gear and the second dividing bevel gear are respectively meshed with both sides of the main bevel gear. The power input shaft rotates through the power box and is coaxially connected to the main bevel gear. Axle brackets are symmetrically and fixedly installed on the upper wall of the frame and are arranged on both sides of the power box. The first output shaft and the second output shaft are respectively rotatably arranged on both sides of the power box. One end of the first output shaft is rotatably installed on the axle bracket through a bearing, and the other end of the first output shaft rotates through the power box and is coaxially connected to the first dividing bevel gear. One end of the second output shaft is rotatably installed on the axle bracket through a bearing, and the other end of the second output shaft rotates through the power box and is coaxially connected to the second dividing bevel gear. A universal joint coupling for power input is connected to the end of the power input shaft away from the power box. A second belt drive is arranged between the second output shaft and the first cutter group. A third belt drive is arranged between the first cutter group and the second cutter group. A tensioning pulley for tensioning the second belt drive is arranged on the frame. The end of the stirring shaft is connected with a reducer, and a first belt drive is arranged between the first output shaft and the reducer.

7. An agricultural mixed fertilization machine according to claim 6, characterized in that: An exhaust pipe is penetrated and arranged on the upper wall of the material leveling cavity. A filter screen is arranged inside the exhaust pipe. A flapping member is installed inside the exhaust pipe through a spring, and the flapping member is arranged above the filter screen.

8. The agricultural mixed fertilization machine according to claim 7, characterized in that: The upper wall of the strip fertilizer discharging pipe is provided with a fertilizer discharging control hole, and a fertilizer discharging baffle is slidably installed in the fertilizer discharging control hole. The fertilizer discharging baffle is slidably attached to the inner wall of the strip fertilizer discharging pipe. A linear motion actuator four is installed on the side wall of the material box, and the actuator end of the linear motion actuator four is connected to the fertilizer discharging baffle. The upper wall of the powder discharging pipe is provided with a powder discharging control hole through which a powder discharging baffle is slidably installed. The powder discharging baffle is slidably attached to the inner wall of the powder discharging pipe. A linear motion actuator five is provided on the side wall of the material box, and the actuator end of the linear motion actuator is connected to the powder discharging baffle.

9. The agricultural mixed fertilization machine according to claim 8, characterized in that: The bottom end of the horizontal stirring container is provided with a blanking hole. The fertilizer discharging device includes a material trough with a hollow upper wall and a fertilizer discharging valve. The horizontal stirring container is installed at the upper end of the material trough. The fertilizer discharging valve includes a material baffle and a linear motion actuator two. A valve hole is provided through one side of the material trough, and the material baffle is slidably inserted into the material trough through the valve hole. The material baffle is slidably attached below the blanking hole. One end of the linear motion actuator two is hinged to the bottom wall of the material box, and the other end of the linear motion actuator two is hinged to the material baffle. A fertilizer discharging hole is provided at the bottom end of the material trough, and the fertilizer discharging hole is directly above the discharging port.

10. The agricultural mixed fertilization machine according to claim 9, wherein: The discharging port is inclined. A valve groove is communicated with the inner wall on one side of the discharging port, and a fertilizer applying valve is provided in the valve groove. The fertilizer applying valve includes a discharging baffle. An adjusting sliding hole is provided through the bottom wall of the valve groove. A sliding seat is provided on the bottom wall of the discharging baffle, and the sliding seat slidably penetrates through the adjusting sliding hole. A linear motion actuator three is installed on the bottom wall of the frame. One end of the linear motion actuator three is hinged to the bottom wall of the frame, and the other end of the linear motion actuator three is hinged to the sliding seat.

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