Nitrogen fertilizer deep placement device

Abstract

The present application relates to the technical field of fertilizing device, specifically is a kind of nitrogen fertilizer deep application device, including installation platform, lifting mechanism, ditching mechanism, scraper mechanism and fertilizing assembly.Lifting mechanism is installed in the center position of installation platform, lifting platform is connected below lifting mechanism, ditching mechanism is installed in the front end of lifting platform, and scraper mechanism is fixedly connected in the rear end.Scraper mechanism includes obliquely arranged filling assembly, the low end of filling assembly is fixed with earth-moving block, and fertilizing assembly is integrated in its interior.The device realizes ditching, earth-moving, automatic backfilling and synchronous fertilizing function through the collaborative design of ditching mechanism and scraper mechanism.Earth-moving block ensures that fertilizer ditch bottom is flat, and avoids uneven problem.Fertilizing assembly transports nitrogen fertilizer to fertilizer ditch bottom, realizes deep application precision control, solves the problems of fertilizer drift, poor uniformity and environmental pollution in traditional fertilization.At the same time, after the earth of fertilizer ditch is removed, it is handled flat, ensures the consistency of depth, improves the accuracy and uniformity of fertilization, and provides reliable data support for agricultural test research.

Description

Technical Field

[0001] This invention relates to the field of fertilization equipment technology, specifically a nitrogen fertilizer deep application device. Background Technology

[0002] In the Loess Plateau, deep application of nitrogen fertilizer can optimize soil nitrogen distribution and regulate microbial activity, improving the micro-ecological environment of the topsoil. This, driven by microorganisms, regulates nitrification and denitrification processes, reducing nitrous oxide (N2O) production and demonstrating significant emission reduction potential. However, the emission reduction mechanism is unclear. Further research is needed to establish different nitrogen application depths, investigate the relationship between soil environmental factors and the abundance of key functional genes involved in N2O production, as well as the changes in soil microbial community structure, to clarify the driving role of environmental factors on key microbial changes in N2O emissions. Trench fertilization is an effective method among deep fertilizer application techniques. This method involves creating trenches in the soil and placing fertilizer deep within the crop root system. Fertilizer application at different depths can aid in the study of emission reduction mechanisms.

[0003] The prior art includes a cassava field trenching and burying deep fertilizer machine, such as the patent with application number CN202410207712.4, which includes a walking mechanism, a trenching mechanism, and a fertilizing mechanism mounted on a chassis. The trenching mechanism includes a trenching wheel, which is vertically rotatably mounted on a mounting plate. The mounting plate is vertically slidably mounted on a rotating disk, which is rotatably mounted on the chassis. The machine also includes an adjustment unit mounted on the chassis, which includes a depth adjustment unit and a width adjustment unit. The depth adjustment unit is used to adjust the soil penetration depth of the trenching wheel by raising and lowering the mounting plate, and the width adjustment unit is used to adjust the opening angle of the trenching wheel by rotating the rotating disk.

[0004] However, the trenching and fertilizing machine provided by the aforementioned patent still has the following shortcomings during use:

[0005] I. According to its content, the fertilization mechanism includes a silo, and a fertilizer inlet is set at the bottom of the silo. The fertilizer inlet is located on a feeding plate that controls the opening size of the fertilizer inlet. The specific fertilization method is as follows: after the trench is dug, the nitrogen fertilizer in the silo falls into the fertilizer trench through the fertilizer inlet. During this process, due to the strong wind in the Loess Plateau, the open feeding inlet is prone to fertilizer particles scattering, reducing the uniformity of fertilization and polluting the environment.

[0006] Second, some of the soil generated during the trenching process tends to fall back and accumulate in the fertilizer trench, and there is an uneven distribution problem, which leads to inaccurate actual application depth of nitrogen fertilizer and low consistency of depth values, thus affecting the accuracy of subsequent research results. Summary of the Invention

[0007] The purpose of this invention is to provide a nitrogen fertilizer deep application device to solve the problems mentioned in the background art.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] A nitrogen fertilizer deep application device includes an installation platform. The bottom surface of the installation platform is equipped with wheels near both ends. A lifting mechanism is installed at the center of the installation platform. The lifting mechanism includes a lifting platform located below the installation platform. A trenching mechanism is installed at the front end of the lifting platform. A scraper mechanism that works in conjunction with the trenching mechanism is fixedly installed at the rear end of the lifting platform.

[0010] The scraper mechanism includes a soil filling component that is inclined below the lifting platform. A soil shovel is fixedly installed at the lower end of the soil filling component, and the higher end of the soil filling component is fixedly connected to the bottom surface of the lifting platform. The soil filling component includes a fertilizer application component.

[0011] The cross-section of the shovel block is triangular, the bottom surface of the shovel block is horizontal, and the bottom surface of the shovel block is flush with the lowest point of the trenching mechanism.

[0012] A material storage mechanism is fixedly installed on the top surface of the mounting platform near the tail end, and the discharge end of the material storage mechanism is fixedly connected to the inlet end of the fertilizer application component.

[0013] Furthermore, the backfilling assembly includes two inclined and parallel side baffles, an end baffle is fixedly connected between the lower ends of the two side baffles, and the shovel block is fixedly installed on the side of the end baffle away from the side baffles.

[0014] Rollers are rotatably installed between the middle and both ends of the two side baffles. A second motor is fixedly installed on the outer side of one of the side baffles near the top. The uppermost roller shaft, near the second motor, rotates through the corresponding side baffle and is fixedly connected to the output shaft end of the second motor.

[0015] A conveyor belt is wound around the three rollers, and the conveyor belt slides in contact with the inner surfaces of the two side baffles.

[0016] Multiple limiting plates are fixedly installed on the outer surface of the conveyor belt, and the multiple limiting plates are distributed in an array along the circumference of the conveyor belt.

[0017] Each of the two side baffles is fixedly connected to a vertically installed hanging plate at its higher end, and the bottom surface of the lifting platform at the top of the hanging plate is fixedly connected.

[0018] Furthermore, the fertilizer application component includes a material guiding component and a feeding port. The material guiding component is fixedly connected between the bottoms of the two side baffles. The material guiding component has a fertilizer application port at one end near the end baffle. The end of the limiting plate away from the conveyor belt slides in contact with the material guiding component when it passes through the material guiding component.

[0019] The two side baffles each have an inlet located near the top on their sides, and the inlet is located between the material guiding assembly and the conveyor belt. The end of the inlet away from the conveyor belt is fixedly connected to a feed pipe.

[0020] Furthermore, the material guiding assembly includes a base plate fixedly connected between the bottoms of the two side baffles. Telescopic elastic support rods are fixedly installed on the top surface of the base plate near its four corners. The top ends of the four telescopic elastic support rods are fixedly connected to a guide plate arranged parallel to the base plate. The two sides of the guide plate are in sliding contact with the side baffles at the corresponding positions.

[0021] The top surface of the guide plate has a plurality of protruding ribs fixedly installed at the middle position, which are perpendicular to the side of the side baffle. The plurality of protruding ribs are arranged in an array along the length of the guide plate, and the distance between two adjacent protruding ribs is equal to the distance between two adjacent limiting plates. The cross section of the protruding ribs is semi-circular.

[0022] The feed inlet is located on the side of the side baffle, between the guide plate and the conveyor belt;

[0023] The end of the limiting plate furthest from the conveyor belt slides into contact with the guide plate as it passes the material guiding assembly.

[0024] Furthermore, a gathering plate is fixedly installed on the side of the suspended platform away from the side baffle, and the two gathering plates are arranged in a figure-eight shape; a vertical suspension rod is fixedly connected between the top surface of the shovel block and the bottom surface of the lifting platform.

[0025] Furthermore, the lifting mechanism includes a hydraulic cylinder fixedly installed on the top surface of the mounting platform, and the telescopic end of the hydraulic cylinder slides through the mounting platform to the bottom of the mounting platform and is then fixedly connected to the lifting platform.

[0026] The top surface of the lifting platform is fixedly connected to two limiting rods that are symmetrically distributed about the hydraulic cylinders. The top ends of the limiting rods slide through the mounting platform to the top of the mounting platform, and a stop block is fixedly installed on the top end of the limiting rods.

[0027] Furthermore, the ditching mechanism includes a fixed motor and a mounting base. The mounting base is fixedly installed on the bottom surface of the lifting platform. A rotary tillage ditching disc is rotatably installed in the mounting base, and a soil retaining cover that works in conjunction with the rotary tillage ditching disc is fixedly installed on the outside of the mounting base.

[0028] The motor is fixedly installed on the top surface of the lifting platform, and the motor is connected to the rotary tillage and ditching disc through a belt and pulley.

[0029] Furthermore, the storage mechanism includes a hopper mounted on the mounting platform, with a material collection pipe fixedly installed through the discharge end of the hopper. The bottom end of the material collection pipe passes through the mounting platform to the bottom of the mounting platform, and a support rod is fixedly connected between the bottom surface of the hopper and the top surface of the mounting platform.

[0030] The bottom end of the collecting pipe is fixedly connected to a round pipe, and the outer periphery of the round pipe is fixedly connected to the bottom end of the discharge pipe with downward openings. The bottom end of the discharge pipe is fixedly connected to a corrugated telescopic pipe, and the ends of the two corrugated telescopic pipes away from the discharge pipe are respectively fixedly connected to the ends of the two feed pipes away from the side baffle.

[0031] Furthermore, the storage mechanism also includes a partition component, which separates the hopper, the collecting pipe and the round pipe into two storage hoppers with different volumes. The larger storage hopper is used to store nitrogen fertilizer, and the smaller storage hopper is used to store nitrification inhibitor granules.

[0032] The separating assembly includes a first partition plate fixedly installed in the silo, a second partition plate fixedly connected to the bottom end of the first partition plate, and a third partition plate fixedly connected to the bottom end of the second partition plate, which is installed in a circular tube.

[0033] Furthermore, motor four and motor three are fixedly installed at both ends of the circular tube, and both motor four and motor three are coaxial with the circular tube.

[0034] The output shaft of the motor four is rotatably connected to the end face of the round tube and then fixedly connected to the rotating shaft two. The end of the rotating shaft two away from the motor four is rotatably connected to the side of the partition three. The auger blade two is fixedly installed on the periphery of the rotating shaft two.

[0035] The output shaft of the motor three is rotated through the end face of the round tube and then fixedly connected to a rotating shaft one. The end of the rotating shaft one away from the motor three is rotatably connected to the side of the partition three. A screw conveyor blade one is fixedly installed on the periphery of the rotating shaft one.

[0036] The beneficial effects of this invention are:

[0037] 1. This invention, through the coordinated design of a trenching mechanism and a scraper mechanism, achieves real-time soil removal and automatic backfilling during the trenching process. The soil-removing blocks equipped with the scraper mechanism ensure a flat and uniform fertilization surface at the bottom of the fertilization trench, effectively avoiding the unevenness problems present in existing trenching methods. Simultaneously, the soil-filling component of the scraper mechanism integrates a fertilization component, which, in conjunction with the storage mechanism, allows for simultaneous fertilization during trenching. The fertilization component directly delivers nitrogen fertilizer to the bottom of the fertilization trench, achieving precise control of deep application and effectively solving the problems of fertilizer particle scattering, poor fertilization uniformity, and environmental pollution associated with traditional open fertilization methods. Furthermore, by leveling the fertilization trench after soil removal, this invention ensures a high degree of consistency in trench depth, significantly improving the accuracy and uniformity of nitrogen fertilizer application depth, and providing a more reliable data foundation for subsequent agricultural experimental research.

[0038] 2. In the storage mechanism of the present invention, the separation component forms two storage chambers with different volumes. The larger storage chamber is used to store nitrogen fertilizer, and the smaller storage chamber is used to store nitrification inhibitor granules. Therefore, the storage mechanism can simultaneously guide nitrogen fertilizer and nitrification inhibitor granules into the fertilizer application component through two corrugated telescopic pipes. This configuration enables the simultaneous application of nitrogen fertilizer and nitrification inhibitor. Furthermore, by controlling the rotation speed of motor three, the application speed of nitrogen fertilizer can be adjusted within a certain range, and by controlling the rotation speed of motor four, the application speed of nitrification inhibitor can be adjusted within a certain range. Therefore, by controlling the rotation speed ratio of motor three and motor four, the usage ratio of nitrogen fertilizer and nitrification inhibitor can be flexibly adjusted, thereby improving the practicality of the present invention.

[0039] 3. In the material guiding assembly of the present invention, the guide plate, the conveyor belt, and the side baffles on both sides form a material guiding trough. When the conveyor belt in the filling assembly moves the limiting plate, the limiting plate in the material guiding trough will squeeze the guide plate when it passes the protrusion. The telescopic elastic support rod will then contract and store energy. When the limiting plate separates from the protrusion, the telescopic elastic support rod will drive the guide plate to reset. During the operation of the filling assembly, the guide plate will vibrate. This setting can ensure that the nitrogen fertilizer and nitrification inhibitor entering the material guiding trough are fully mixed before falling into the fertilizer trench through the fertilizer inlet. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2This is a three-dimensional schematic diagram of the scraper mechanism in this invention;

[0043] Figure 3 yes Figure 2 A three-dimensional diagram from another angle;

[0044] Figure 4 This is a three-dimensional schematic diagram of the backfilling component in the scraper mechanism;

[0045] Figure 5 yes Figure 4 Enlarged view of section A;

[0046] Figure 6 This is a three-dimensional schematic diagram of the feeding mechanism in this invention;

[0047] Figure 7 yes Figure 6 A three-dimensional diagram from another angle;

[0048] Figure 8 This is a three-dimensional schematic diagram of the connection relationship between the collecting pipe and the circular pipe in this invention;

[0049] Figure 9 This is a three-dimensional schematic diagram of the internal structure of the circular tube in this invention;

[0050] Figure 10 yes Figure 9 Enlarged view of section B;

[0051] Figure 11 This is a schematic diagram of the connection relationship between the material guiding assembly and the side baffle in this invention;

[0052] Figure 12 yes Figure 11 Enlarged view of section D;

[0053] Figure 13 yes Figure 11 Enlarged view of section C;

[0054] The attached figures are labeled as follows:

[0055] 1-Mounting platform, 2-Walking wheel, 3-Hydraulic cylinder, 4-Limit rod, 5-Stop block, 6-Lifting platform, 7-Hanging rod, 8-Rotary tillage and furrowing disc, 9-Motor 1, 10-Mounting base, 11-Scraper mechanism, 12-Support rod, 13-Side baffle, 14-Conveyor belt, 15-Limit plate, 16-Soil shovel, 17-Feed pipe, 18-End baffle, 19-Motor 2, 20-Corrugated telescopic pipe, 21-Hanging plate, 22-Gathering plate, 23-Material guide Components: 24-Roller, 25-Fertilizer inlet, 26-Feed inlet, 27-Hopper, 28-Partition 1, 29-Collection pipe, 30-Round pipe, 31-Motor 3, 32-Motor 4, 33-Discharge pipe, 34-Partition 2, 35-Shaft 1, 36-Auger blade 1, 37-Partition 3, 38-Shaft 2, 39-Auger blade 2, 40-Base plate, 41-Telescopic elastic support rod, 42-Guide plate, 43-Protruding ridge, 44-Soil retaining cover. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Example 1:

[0058] Please see Figures 1-5 In this embodiment of the invention, a nitrogen fertilizer deep application device includes an installation platform 1. The bottom surface of the installation platform 1 is equipped with walking wheels 2 near both ends. A lifting mechanism is installed at the center of the installation platform 1. The lifting mechanism includes a lifting platform 6 located below the installation platform 1. A ditching mechanism is installed at the front end of the lifting platform 6. A scraper mechanism 11 that works in conjunction with the ditching mechanism is fixedly installed at the rear end of the lifting platform 6.

[0059] The scraper mechanism 11 includes a soil filling component that is inclined below the lifting platform 6. A soil shovel block 16 is fixedly installed at the lower end of the soil filling component, and the higher end of the soil filling component is fixedly connected to the bottom surface of the lifting platform 6. The soil filling component includes a fertilizer application component.

[0060] The cross-section of the shovel block 16 is triangular, the bottom surface of the shovel block 16 is horizontal, and the bottom surface of the shovel block 16 is flush with the lowest point of the trenching mechanism.

[0061] A material storage mechanism is fixedly installed on the top surface of the mounting platform 1 near the tail end. The discharge end of the material storage mechanism is fixedly connected to the feed end of the fertilizer application component.

[0062] The backfilling assembly includes two inclined and parallel side baffles 13, an end baffle 18 is fixedly connected between the lower ends of the two side baffles 13, and a shovel block 16 is fixedly installed on the side of the end baffle 18 away from the side baffles 13.

[0063] Rollers 24 are rotatably installed between the middle and both ends of the two side baffles 13. A motor 29 is fixedly installed on the outer side of one side baffle 13 near the top. The uppermost roller 24, near the motor 29, rotates through the corresponding side baffle 13 and is fixedly connected to the output shaft end of the motor 29.

[0064] A conveyor belt 14 is wound around three rollers 24, and the conveyor belt 14 slides in contact with the inner surfaces of the two side baffles 13.

[0065] Multiple limiting plates 15 are fixedly installed on the outer surface of the conveyor belt 14, and the multiple limiting plates 15 are distributed in an array along the circumference of the conveyor belt 14.

[0066] Both side baffles 13 have vertically installed hanging plates 21 fixedly connected to their higher ends, and the top of the hanging plates 21 is fixedly connected to the bottom surface of the lifting platform 6.

[0067] The fertilizer application component includes a material guide component 23 and a feed inlet 26. The material guide component 23 is fixedly connected between the bottoms of the two side baffles 13. The material guide component 23 has a fertilizer inlet 25 at one end near the end baffle 18. The end of the limiting plate 15 away from the conveyor belt 14 slides in contact with the material guide component 23 when it passes through the material guide component 23.

[0068] Both side baffles 13 have inlet ports 26 near the top on their sides, and the inlet ports 26 are located between the guide assembly 23 and the conveyor belt 14. The end of the inlet port 26 away from the conveyor belt 14 is fixedly connected to the feed pipe 17.

[0069] The lifting mechanism includes a hydraulic cylinder 3 fixedly installed on the top surface of the mounting platform 1. The telescopic end of the hydraulic cylinder 3 slides through the mounting platform 1 to the bottom of the mounting platform 1 and is then fixedly connected to a lifting platform 6.

[0070] The top surface of the lifting platform 6 is fixedly connected to two limiting rods 4 that are symmetrically distributed about the hydraulic cylinder 3. The top of the limiting rods 4 slides through the mounting platform 1 to the top of the mounting platform 1, and a stop block 5 is fixedly installed on the top of the limiting rods 4.

[0071] The lifting mechanism can adjust the trenching depth within a certain range by controlling the height of the lifting platform 6, thereby meeting the needs of deep application of nitrogen fertilizer at different depths.

[0072] The ditching mechanism includes a fixed motor 9 and a mounting base 10. The mounting base 10 is fixedly installed on the bottom surface of the lifting platform 6. A rotary tillage ditching disc 8 is rotatably installed in the mounting base 10, and a soil retaining cover 44 that works in conjunction with the rotary tillage ditching disc 8 is fixedly installed on the outside of the mounting base 10.

[0073] Motor 9 is fixedly installed on the top surface of the lifting platform 6, and motor 9 is connected to the rotary tillage and ditching disc 8 through a belt and pulley.

[0074] In the Loess Plateau, deep application of nitrogen fertilizer can optimize soil nitrogen distribution and regulate microbial activity, showing significant emission reduction potential. However, the emission reduction mechanism is unclear, requiring the setting of different nitrogen application depths and research on the abundance of key functional genes in soil environmental factors and N2O production, as well as the characteristics of changes in soil microbial community structure. Existing technologies, such as the patent application number CN202410207712.4, provide a deep fertilization machine for trenching and burying soil in cassava fields. However, this trenching fertilization machine still has the following shortcomings during use:

[0075] 1. The fertilization mechanism includes a silo, with a fertilization port at the bottom of the silo. The fertilization port is located on a feeding plate that controls the opening size of the fertilization port. The specific fertilization method is as follows: after the trench is dug, the nitrogen fertilizer in the silo falls into the fertilizer trench through the fertilization port. During this process, due to the strong winds on the Loess Plateau, the open feeding port can easily cause fertilizer particles to scatter, reducing fertilization efficiency and polluting the environment.

[0076] Second, some of the soil generated during the trenching process tends to fall back and accumulate in the fertilizer trench, and there is an uneven distribution problem, which leads to inaccurate actual application depth of nitrogen fertilizer and low consistency of depth values, thus affecting the accuracy of subsequent research results.

[0077] When using this invention:

[0078] The movement of the main body of the device drives the trenching mechanism and scraper mechanism 11 on the lifting platform 6 to trench. At the beginning of trenching, the lifting mechanism drives the lifting platform 6 to descend at a constant speed, so that the bottom of the trenching mechanism and scraper mechanism 11 gradually extends into the soil while moving, until the preset depth is reached. During this process, the descent path of the scraper mechanism 11 in the soil is inclined, which can avoid the problem that the scraper mechanism 11 is difficult to insert into the soil when descending vertically.

[0079] After the trenching depth stabilizes, the trenching mechanism initially forms a fertilizer trench on the ground using the rotary tillage trenching disc 8. At this time, the original soil in the fertilizer trench becomes broken soil and is stored in the fertilizer trench. As the main body of the device moves forward, and the bottom surface of the soil shovel block 16 in the scraper mechanism 11 is flush with the bottom surface of the fertilizer trench, the broken soil in the fertilizer trench moves along the guide of the inclined surface of the soil shovel block 16 to the filling component of the scraper mechanism 11. At this time, a fertilizer trench with a flat and clean bottom surface is formed directly below the scraper mechanism 11. The filling component guides the broken soil to the fertilizer trench behind, thereby completing the automatic backfilling function.

[0080] During the process of scraper mechanism 11 leveling the fertilizer trench and conveying broken soil for backfilling, the storage mechanism introduces nitrogen fertilizer into the fertilizer application component of the backfilling component. The nitrogen fertilizer falls through the fertilizer application port 25 in the fertilizer application component into the flat fertilizer trench directly below scraper mechanism 11.

[0081] This invention achieves real-time soil removal and automatic backfilling during the ditching process through the coordinated design of the ditching mechanism and the scraper mechanism 11. The soil-removing blocks 16 equipped with the scraper mechanism 11 ensure a flat and uniform fertilization surface at the bottom of the fertilization trench, effectively avoiding the unevenness problem present in existing ditching methods. Simultaneously, the fertilization component is integrated into the soil-filling assembly of the scraper mechanism 11, enabling simultaneous fertilization during ditching in conjunction with the storage mechanism. The fertilization component directly delivers nitrogen fertilizer to the bottom of the fertilization trench, achieving precise control of deep application and effectively solving the problems of fertilizer particle scattering, poor fertilization uniformity, and environmental pollution associated with traditional open fertilization methods. Furthermore, by leveling the fertilization trench after soil removal, this invention ensures a high degree of consistency in trench depth, significantly improving the accuracy and uniformity of nitrogen fertilizer application depth, and providing a more reliable data foundation for subsequent agricultural experimental research.

[0082] Specifically:

[0083] In the ditching mechanism, motor 9 drives rotary tillage ditching disc 8 to perform rotary tillage ditching action through belt and pulley structure. Soil retaining cover 44 covers rotary tillage ditching disc 8. The soil retaining cover 44 can block the soil and prevent the soil fragments formed by rotary tillage ditching disc 8 during the ditching process from overflowing from the ditch, ensuring the amount of soil required for backfilling.

[0084] In the scraper mechanism 11, the bottom surface of the shovel block 16 is flush with the bottom surface of the fertilizer ditch, thereby leveling the bottom surface of the fertilizer ditch during the movement.

[0085] In the backfilling assembly of the scraper mechanism 11, the motor 29 drives the roller 24 to rotate, which in turn drives the conveyor belt 14 to rotate. This causes the conveyor belt 14 to guide the broken soil from the bottom position of the scraper mechanism 11 to the top position, and then fall into the trench behind the scraper mechanism 11, thus completing the automatic backfilling action. The setting of the limiting plate 15 can increase the guiding effect and improve the stability of backfilling.

[0086] In the fertilization component of the soil filling assembly, the feed pipe 17 is connected to the storage mechanism, and the guide component 23, the conveyor belt 14, and the two side baffles 13 form a guide groove. The nitrogen fertilizer in the storage mechanism enters the guide groove through the feed pipe 17. Then, under the action of gravity and the movement of the limiting plate 15 in the guide groove, the nitrogen fertilizer is guided to the bottom position and then falls onto the flat bottom surface of the fertilizer trench through the fertilizer inlet 25, thereby completing the fertilization function.

[0087] Example 2:

[0088] Please see Figure 1 , Figure 2 as well as Figures 6-10 Based on embodiment 1, the storage mechanism includes a hopper 27 set on the mounting platform 1. A material collection pipe 29 is fixedly installed through the discharge end of the hopper 27. The bottom end of the material collection pipe 29 passes through the mounting platform 1 to the bottom of the mounting platform 1. A support rod 12 is fixedly connected between the bottom surface of the hopper 27 and the top surface of the mounting platform 1.

[0089] A circular pipe 30 is fixedly connected to the bottom end of the collecting pipe 29. A discharge pipe 33 with an opening facing downwards is fixedly connected to both ends of the circular pipe 30. A corrugated expansion pipe 20 is fixedly connected to the bottom end of the discharge pipe 33. The ends of the two corrugated expansion pipes 20 away from the discharge pipe 33 are respectively fixedly connected to the ends of the two feed pipes 17 away from the side baffle 13.

[0090] The storage mechanism also includes a partition component, which divides the hopper 27, the collecting pipe 29 and the round pipe 30 into two storage hoppers with different volumes. The larger storage hopper is used to store nitrogen fertilizer, and the smaller storage hopper is used to store nitrification inhibitor granules.

[0091] The separating assembly includes a first partition 28 fixedly installed in the hopper 27, a second partition 34 fixedly connected to the bottom end of the first partition 28 and installed in the collecting pipe 29, and a third partition 37 fixedly connected to the bottom end of the second partition 34 and installed in the round pipe 30.

[0092] Among them, motor 4 32 and motor 31 are fixedly installed at both ends of the circular tube 30, and motor 4 32 and motor 31 are coaxial with the circular tube 30.

[0093] After the output shaft of motor 4 32 rotates through the end face of the round tube 30, it is fixedly connected to the rotating shaft 2 38. The end of the rotating shaft 2 38 away from motor 4 32 is rotatably connected to the side of the partition 3 37. The auger blade 2 39 is fixedly installed on the periphery of the rotating shaft 2 38.

[0094] After the output shaft of motor 31 rotates through the end face of the round tube 30, it is fixedly connected to the rotating shaft 35. The end of the rotating shaft 35 away from motor 31 is rotatably connected to the side of partition 37. The auger blade 36 is fixedly installed on the periphery of the rotating shaft 35.

[0095] In the storage mechanism, the partition components create two storage compartments of different volumes. The larger compartment stores nitrogen fertilizer, while the smaller compartment stores nitrification inhibitor granules. Two corrugated expansion pipes 20 simultaneously guide both nitrogen fertilizer and nitrification inhibitor granules into the application unit. This design enables simultaneous application of nitrogen fertilizer and nitrification inhibitor. The nitrification inhibitor inhibits the activity of nitrifying bacteria in the soil, slowing the conversion of ammonium nitrogen to nitrate nitrogen. This prolongs the existence time of ammonium nitrogen in the soil, making it more readily absorbed by plants. By delaying the nitrification reaction, nitrogen fertilizer loss is reduced, improving overall fertilizer utilization efficiency and contributing to increased crop yield. Simultaneously, it reduces nitrate leaching, lowers the risk of groundwater pollution, and decreases nitrogen emissions, thus reducing greenhouse gas release.

[0096] The application rate of nitrogen fertilizer can be adjusted within a certain range by controlling the rotation speed of motor 31, and the application rate of nitrification inhibitor can be adjusted within a certain range by controlling the rotation speed of motor 4 32. Therefore, by controlling the rotation speed ratio of motor 31 and motor 4 32, the ratio of nitrogen fertilizer to nitrification inhibitor can be flexibly adjusted, thereby improving the practicality of the invention.

[0097] Example 3:

[0098] Please see Figure 3 , Figure 4 and Figures 11-13 Based on embodiment 2, the material guiding assembly 23 includes a base plate 40 fixedly connected between the bottoms of the two side baffles 13. The top surface of the base plate 40 is fixedly installed with telescopic elastic support rods 41 near its four corners. The top ends of the four telescopic elastic support rods 41 are fixedly connected with guide plates 42 arranged parallel to the base plate 40. The two sides of the guide plates 42 are in sliding contact with the side baffles 13 at the corresponding positions.

[0099] The top surface of the guide plate 42 is fixedly installed with a plurality of protruding ribs 43 that are perpendicular to the side of the side baffle 13. The plurality of protruding ribs 43 are arranged in an array along the length of the guide plate 42, and the distance between two adjacent protruding ribs 43 is equal to the distance between two adjacent limiting plates 15. The cross section of the protruding ribs 43 is semi-circular.

[0100] The feed inlet 26 is located on the side of the side baffle 13 between the guide plate 42 and the conveyor belt 14;

[0101] The end of the limiting plate 15 away from the conveyor belt 14 slides in contact with the guide plate 42 as it passes the guide assembly 23.

[0102] In the material guiding assembly 23, the guide plate 42, the conveyor belt 14, and the side baffles 13 on both sides form a material guiding trough. When the conveyor belt 14 in the filling assembly moves the limiting plate 15, the limiting plate 15 in the material guiding trough will squeeze the guide plate 42 when it passes the protrusion 43. The telescopic elastic support rod 41 will then contract and store energy. When the limiting plate 15 separates from the protrusion 43, the telescopic elastic support rod 41 will drive the guide plate 42 to reset. During the operation of the filling assembly, the guide plate 42 will vibrate. This setting can fully mix the nitrogen fertilizer and nitrification inhibitor entering the material guiding trough before they fall into the fertilizer trench through the fertilizer inlet 25. This allows the nitrification inhibitor to be evenly distributed in the nitrogen fertilizer, effectively inhibiting the activity of nitrifying bacteria and slowing down the decomposition rate of nitrogen fertilizer. As a result, the nitrogen fertilizer stays in the soil for a longer time, providing a stable nutrient supply for crops, improving the utilization rate of nitrogen fertilizer, and effectively reducing the volatilization and leaching of nitrogen fertilizer, which helps to reduce greenhouse gas emissions.

[0103] Example 4:

[0104] Please see Figure 1 and Figure 2 Based on embodiment 1, a gathering plate 22 is fixedly installed on the side of the hanging plate 21 away from the side baffle 13. The two gathering plates 22 are arranged in a figure-eight shape. A vertical hanging rod 7 is fixedly connected between the top surface of the shovel block 16 and the bottom surface of the lifting platform 6.

[0105] The installation of the boom 7 enhances the connection stability between the scraper mechanism 11 and the lifting platform 6. The installation of the two gathering plates 22 can guide the soil thrown from the top of the filling component, so that the broken soil can fall accurately into the ditch, thus improving the quality of the filling work.

[0106] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A nitrogen fertilizer deep application device, comprising an installation platform, wherein wheels are installed on the bottom surface of the installation platform near both ends, and a lifting mechanism is installed at the center of the installation platform, characterized in that, The lifting mechanism includes a lifting platform located below the mounting platform. A trenching mechanism is installed at the front end of the lifting platform, and a scraper mechanism that works in conjunction with the trenching mechanism is fixedly installed at the rear end of the lifting platform. The scraper mechanism includes a soil filling component that is inclined below the lifting platform. A soil shovel is fixedly installed at the lower end of the soil filling component, and the higher end of the soil filling component is fixedly connected to the bottom surface of the lifting platform. The soil filling component includes a fertilizer application component. The cross-section of the shovel block is triangular, the bottom surface of the shovel block is horizontal, and the bottom surface of the shovel block is flush with the lowest point of the trenching mechanism. A material storage mechanism is fixedly installed on the top surface of the mounting platform near the tail end. The discharge end of the material storage mechanism is fixedly connected to the inlet end of the fertilizer application component. The backfill assembly includes two inclined and parallel side baffles, with an end baffle fixedly connected between the lower ends of the two side baffles, and a shovel block fixedly installed on the side of the end baffle away from the side baffles. Rollers are rotatably installed between the middle and both ends of the two side baffles. Motor 2 is fixedly installed on the outer side of one side baffle near the top. The uppermost roller shaft near motor 2 rotates through the corresponding side baffle and is fixedly connected to the output shaft end of motor 2. A conveyor belt is wound around three rollers, and the conveyor belt slides in contact with the inner surfaces of the two side baffles. Multiple limiting plates are fixedly installed on the outer surface of the conveyor belt, and the multiple limiting plates are distributed in an array along the circumference of the conveyor belt. Both side baffles have vertically installed hanging plates fixedly connected to their higher ends, and the top of the hanging plates is fixedly connected to the bottom surface of the lifting platform. The fertilizer application assembly includes a material guiding assembly and an inlet. The material guiding assembly is fixedly connected between the bottoms of the two side baffles. The material guiding assembly has a fertilizer inlet at one end near the end baffle. The end of the limiting plate away from the conveyor belt slides in contact with the material guiding assembly when it passes through the material guiding assembly. The two side baffles each have an inlet at a position near the top on their sides. The inlet is located between the material guiding assembly and the conveyor belt. The end of the inlet away from the conveyor belt is fixedly connected to a feed pipe. The material guiding assembly includes a base plate fixedly connected between the bottoms of two side baffles. Telescopic elastic support rods are fixedly installed on the top surface of the base plate near its four corners. The tops of the four telescopic elastic support rods are fixedly connected to a guide plate that is parallel to the base plate. The two sides of the guide plate slide in contact with the side baffles at the corresponding positions. The top surface of the guide plate has multiple protruding ribs fixedly installed at the middle position, which are perpendicular to the side of the side baffle. The multiple protruding ribs are arranged in an array along the length of the guide plate, and the distance between two adjacent protruding ribs is equal to the distance between two adjacent limiting plates. The cross section of the protruding ribs is semi-circular. The feed inlet is located on the side of the side baffle, between the guide plate and the conveyor belt; The end of the limiting plate furthest from the conveyor belt slides into contact with the guide plate as it passes the material guiding assembly. The storage mechanism includes a silo, a collection pipe, a circular pipe, and a partition component. The partition component separates the silo, the collection pipe, and the circular pipe to form two storage chambers with different volumes. The larger storage chamber is used to store nitrogen fertilizer, and the smaller storage chamber is used to store nitrification inhibitor granules.

2. The nitrogen fertilizer deep application device according to claim 1, characterized in that, A gathering plate is fixedly installed on the side of the hanging plate away from the side baffle, and the two gathering plates are arranged in a figure-eight shape; A vertical boom is fixedly connected between the top surface of the shovel block and the bottom surface of the lifting platform.

3. The nitrogen fertilizer deep application device according to claim 1, characterized in that, The lifting mechanism includes a hydraulic cylinder fixedly installed on the top surface of the mounting platform. The telescopic end of the hydraulic cylinder slides through the mounting platform to the bottom of the mounting platform and is then fixedly connected to the lifting platform. The top surface of the lifting platform is fixedly connected to two limit rods that are symmetrically distributed about the hydraulic cylinders. The top of the limit rods slides through the mounting platform to the top of the mounting platform, and a stop block is fixedly installed on the top of the limit rods.

4. The nitrogen fertilizer deep application device according to claim 1, characterized in that, The ditching mechanism includes a fixed motor and a mounting base. The mounting base is fixedly installed on the bottom surface of the lifting platform. A rotary tillage ditching disc is rotatably installed in the mounting base, and a soil retaining cover that works in conjunction with the rotary tillage ditching disc is fixedly installed on the outside of the mounting base. Motor 1 is fixedly installed on the top surface of the lifting platform, and is connected to the rotary tillage and ditching disc via a belt and pulley.

5. A nitrogen fertilizer deep application device according to claim 1, characterized in that, The storage mechanism includes a hopper mounted on the mounting platform. A material collection pipe is fixedly installed through the discharge end of the hopper. The bottom end of the material collection pipe passes through the mounting platform to the bottom of the mounting platform. A support rod is fixedly connected between the bottom surface of the hopper and the top surface of the mounting platform. A circular pipe is fixedly connected to the bottom of the collecting pipe. At both ends of the circular pipe, a downward-opening discharge pipe is fixedly connected. A corrugated expansion pipe is fixedly connected to the bottom of the discharge pipe. The ends of the two corrugated expansion pipes away from the discharge pipe are fixedly connected to the ends of the two feed pipes away from the side baffle, respectively.

6. A nitrogen fertilizer deep application device according to claim 5, characterized in that, The partition assembly includes a partition 1 fixedly installed in the silo, a partition 2 fixedly connected to the bottom end of the partition 1 and a partition 3 fixedly connected to the bottom end of the partition 2 and a circular tube.

7. A nitrogen fertilizer deep application device according to claim 6, characterized in that, Motor 4 and Motor 3 are fixedly installed at both ends of the round tube, and both Motor 4 and Motor 3 are coaxial with the round tube. After the output shaft of motor four rotates through the end face of the round tube, it is fixedly connected to the rotating shaft two. The end of the rotating shaft two away from motor four is rotatably connected to the side of the partition three. The auger blade two is fixedly installed on the periphery of the rotating shaft two. After the output shaft of motor three rotates through the end face of the round tube, it is fixedly connected to shaft one. The end of shaft one away from motor three is rotatably connected to the side of partition three. Screw blade one is fixedly installed on the periphery of shaft one.

Images