A fertilizer application device and application method based on buoyancy drive principle

Abstract

The present invention discloses a fertilizer application device and application method based on the buoyancy drive principle, which relates to the field of fertilization technology. The present invention includes a buoyancy drive mechanism, an intermittent feeding mechanism, a material guide mechanism, an upper pushing mechanism and an intermittent unloading mechanism. The buoyancy drive mechanism includes a first arc-shaped cavity, a second arc-shaped cavity and a water storage channel. A buoyancy drive member is provided inside the water storage channel. The feeding power assembly is used to realize the relative movement of the two first feeding assemblies and the second feeding assemblies. A semicircular transfer cavity is provided at the bottom of the guide ring body. An inclined guide port connected to the semicircular transfer cavity is provided on the outer surface of the guide ring body. The inner surface of the upper pushing ring body is in contact with the guide ring body. The intermittent unloading mechanism includes a semicircular unloading assembly and a semicircular push plate extending in opposite directions. By providing multiple first arc-shaped cavities for storing different fertilizers, the present invention can add multiple fertilizers to the fertilizer pit at the same time during the fertilization operation, thereby greatly improving the efficiency of the fertilization operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of fertilization, and in particular relates to a fertilizer application device and an application method based on a buoyancy drive principle. Background Art

[0002] In agricultural production, fertilization is an essential management measure to ensure high and stable crop yields. Appropriate fertilization not only ensures crop yield and quality, but also reduces environmental risks. Common fertilization methods involve digging trenches or holes around crop seeds, along the edges of planted seedlings, or at the roots, evenly applying fertilizer and then covering with soil.

[0003] However, when applying multiple fertilizers, traditional fertilization methods typically require adding different fertilizers sequentially to a fertilizer trench or pit and then completing the fertilization process by covering the soil. This makes it difficult to evenly mix the different fertilizers, resulting in low fertilization efficiency, which in turn affects crop nutrient absorption and utilization, hindering the improvement of fertilizer nutrient utilization efficiency. To address this issue, we provide a buoyancy-driven fertilizer application device and method to address these technical issues. Summary of the Invention

[0004] The object of the present invention is to provide a fertilizer application device and application method based on the buoyancy drive principle, which solves the problems in the above-mentioned background technology through the specific structural design of the buoyancy drive mechanism, intermittent feeding mechanism, material guiding mechanism, upper pushing mechanism and intermittent unloading mechanism.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a fertilizer application device based on the buoyancy drive principle, including a buoyancy drive mechanism, the buoyancy drive mechanism including a first arc-shaped cavity and a second arc-shaped cavity symmetrically arranged, the diameter of the first arc-shaped cavity gradually increasing from the inside to the outside, and the diameter of the second arc-shaped cavity gradually increasing from the inside to the outside; the buoyancy drive mechanism also includes two symmetrically arranged water storage channels, and a buoyancy drive member is arranged inside the water storage channels; an intermittent material feeding mechanism, the intermittent material feeding mechanism includes a first material feeding component, a second material feeding component and a material feeding power component, the first material feeding component and the second material feeding component are symmetrically arranged; the first material feeding component is symmetrically slidably fitted inside the first arc-shaped cavity, and the second material feeding component is symmetrically slidably fitted inside the second arc-shaped cavity, and the material feeding power component is used to realize the relative movement of the two first material feeding components and the two second material feeding components; a material guiding mechanism, the material guiding mechanism is coaxially fixedly arranged on Below the arc-shaped cavity, the material guiding mechanism includes a material guiding ring body whose diameter gradually increases from the inside to the outside, a semicircular transfer cavity is opened at the bottom of the material guiding ring body, and an inclined material guiding port connected with the corresponding semicircular transfer cavity is opened on the outer surface of the material guiding ring body; an upper pushing mechanism, the upper pushing mechanism includes an upper pushing ring body whose diameter gradually increases from the inside to the outside, the inner surface of the upper pushing ring body is fitted with the outer surface of the corresponding material guiding ring body, the first arc-shaped cavity is gap-matched with the corresponding upper pushing ring body, and the second arc-shaped cavity is gap-matched with the corresponding upper pushing ring body; and an intermittent unloading mechanism, the intermittent unloading mechanism is rotatably arranged at the bottom of the material guiding mechanism, the intermittent unloading mechanism includes a semicircular unloading assembly and a semicircular pushing plate, the extension directions of the semicircular unloading assembly and the semicircular pushing plate are opposite, the semicircular unloading assembly and the semicircular transfer cavity are arranged one-to-one, and the semicircular push plate and the upper pushing ring body are arranged one-to-one.

[0007] The present invention is further configured such that the buoyancy drive mechanism also includes a fixed ring whose diameter gradually increases from the inside to the outside, and a partition plate is fixedly arranged inside the fixed ring, which divides the interior of the fixed ring into a first arc-shaped cavity and a second arc-shaped cavity through the partition plate; a first elastic member fixedly connected to the partition plate is arranged inside the first arc-shaped cavity and the second arc-shaped cavity, and the surface of the outermost fixed ring is connected to a mounting plate through a support frame.

[0008] The present invention is further configured such that the water storage channel is connected to the fixed ring located at the outermost layer via a fixed frame, and a wire seat is fixedly provided on the top of the water storage channel; an axial rack is slidingly provided on the circumferential side of the fixed ring located at the outermost layer, and the axial rack is arranged in one-to-one correspondence with the water storage channel, and a traction rope passing through the corresponding wire seat is connected between the axial rack and the buoyancy driving component.

[0009] The present invention is further configured as follows: the buoyancy drive mechanism also includes a hopper, which is fixedly connected to the fixed ring located at the outermost layer, and a fertilizer pipe is fixedly arranged at the bottom of the hopper; an outer moistening soil water tray is fixedly arranged on the outer surface of the fertilizer pipe, and a water pump is fixedly installed on the top of the outer moistening soil water tray, and the water outlet of the water pump is connected to the inside of the outer moistening soil water tray through the water outlet pipe, and the water inlet of the water pump is connected to the water inlet pipe, and a drain pipe is connected between the two water storage channels, and the drain pipe is connected to the water inlet pipe; an inner moistening soil cone disk coaxial with the fertilizer pipe is arranged inside the fertilizer pipe, and the top of the inner moistening soil cone disk is connected to the outer moistening soil water tray through a connecting pipe.

[0010] The present invention is further configured such that the first material feeding assembly and the second material feeding assembly both include a plurality of movable plates in a radial array, each movable plate is fixedly connected by a first linkage plate, the first elastic member inside the first arc-shaped cavity is fixedly connected to the corresponding movable plate, and the first elastic member inside the second arc-shaped cavity is fixedly connected to the corresponding movable plate.

[0011] An arc-shaped sealing plate is fixedly provided at the bottom of the movable plate, the first arc-shaped cavity is slidably matched with the corresponding arc-shaped sealing plate, the second arc-shaped cavity is slidably matched with the corresponding arc-shaped sealing plate, the two adjacent arc-shaped sealing plates inside the first arc-shaped cavity are snap-fitted, and the two adjacent arc-shaped sealing plates inside the second arc-shaped cavity are snap-fitted.

[0012] The present invention is further configured such that the feeding power assembly includes two symmetrically arranged mounting plates, a bidirectional screw is rotatably arranged between the two mounting plates, one end of the bidirectional screw is connected to the output end of the power motor on the surface of one of the mounting plates; two bidirectional push plates are symmetrically arranged between the two mounting plates, the bidirectional push plates are fitted with the first linkage plates on both sides thereof, and a second elastic member is fixedly arranged between the bidirectional push plates and the corresponding mounting plates.

[0013] A radial extrusion piece fitted with the bidirectional pushing plate is provided between the bidirectional pushing plate and the corresponding mounting plate. The radial extrusion piece is slidably connected to the top of the partition plate, and the radial extrusion piece is threadedly engaged with the bidirectional screw.

[0014] The present invention is further configured such that a limiting member is fixedly provided on the outer surface of the upper pushing ring body, the limiting member slides in cooperation with the limiting groove on the inner surface of the corresponding guide ring body, the limiting groove on the inner surface of the outermost fixed ring slides in cooperation with the corresponding limiting member, and the top of the upper pushing ring body is provided with a beveled guide groove corresponding to the beveled guide port.

[0015] The present invention is further configured such that the intermittent unloading mechanism also includes a central support seat, the central support seat is fixedly arranged inside the innermost fixed ring, and two unloading shafts are symmetrically arranged on the circumferential side of the central support seat, and the unloading shaft is rotatably connected to the outermost fixed ring; unloading tooth columns are fixedly arranged on both ends of the unloading shaft, and the unloading tooth columns are meshed with corresponding axial racks; the semicircular push plate is fixedly arranged on the circumferential side of the unloading shaft, and the semicircular unloading assembly includes a semicircular unloading box fixedly connected to the unloading shaft, and a unloading port is provided on the circumferential side of the semicircular unloading box.

[0016] The present invention is further configured such that the intermittent material feeding mechanism also includes a material gathering component; wherein, the material gathering component includes a material gathering plate, and each material gathering plate is fixedly connected by a second linkage plate, the first arc-shaped cavity slides with the corresponding material gathering plate, the second arc-shaped cavity slides with the corresponding material gathering plate, and one end of the second linkage plate is fixedly provided with an arc-shaped attachment plate that fits tightly on the outer surface of the outermost fixed ring, and a positioning port is provided on the peripheral side of the arc-shaped attachment plate.

[0017] The material gathering assembly also includes an adjusting ring body rotatably arranged on the outer surface of the outermost fixed ring, and an ear plate corresponding to the arc-shaped attachment plate is fixedly arranged on the top of the adjusting ring body, and the surface of the ear plate is threaded with a positioning rod that is plugged into the corresponding positioning port.

[0018] The present invention has the following beneficial effects:

[0019] 1. The present invention provides a plurality of first arc-shaped cavities, and stores different fertilizers in each first arc-shaped cavity. During the fertilization operation, multiple fertilizers can be added to the fertilization pit at the same time. There is no need to add different fertilizers to the fertilization pit one after another to meet the fertilization needs, thereby greatly improving the efficiency of the fertilization operation and reducing the labor intensity of the fertilization workers.

[0020] 2. The present invention provides a plurality of first arc-shaped cavities and second arc-shaped cavities, stores different fertilizers in each first arc-shaped cavity, and stores organic fine soil in each second arc-shaped cavity. During the fertilization operation, the unloaded fertilizer and organic fine soil fall into the collecting hopper for mixing, and the mixed fertilizer then falls into the fertilization pit through the fertilization channel. After the fertilization is completed, there is no need to cover the soil inside the fertilization pit, thereby greatly improving the efficiency of the fertilization operation.

[0021] 3. The present invention provides an outer moistening water tray and an inner moistening cone tray. Before fertilizing, the water inside the water storage channel is sprayed into the fertilization pit to form an outer moistening water circle and an inner moistening water circle. Under the action of the falling water level, the buoyancy drive member and the traction rope drive the axial rack to move upward, thereby driving the intermittent unloading mechanism to rotate 180° so that the discharge port on the semicircular unloading box is set upward. The mixed fertilizer flows along the fertilization channel to the area between the outer moistening water tray and the inner moistening cone tray. Through this soil moistening fertilization method, the fertilizer after fertilization is partially dissolved in the soil near the roots of the crops, thereby accelerating the crops' absorption of the fertilizer.

[0022] 4. The present invention provides an axial rack meshing with the intermittent unloading mechanism, and connects a traction rope between the buoyancy drive member inside the water storage channel and the axial rack. During the entire fertilization operation, the rotation of the intermittent unloading mechanism is achieved by the buoyancy drive member as the water level drops. There is no need to add an additional power source to control the rotation of the intermittent unloading mechanism, thereby greatly reducing power loss and lowering the operating cost of the fertilization device.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a structural diagram of a fertilizer application device based on the buoyancy drive principle.

[0026] Figure 2 for Figure 1 top view of the structure.

[0027] Figure 3 Schematic diagram of the internal structure of the fertilizer application device of the present invention.

[0028] Figure 4 for Figure 3 A magnified view of the local structure at point A.

[0029] Figure 5 Schematic diagram of the structure of the buoyancy drive mechanism in the present invention.

[0030] Figure 6 for Figure 5 top view of the structure.

[0031] Figure 7 for Figure 5Schematic diagram of the structure from an upward perspective.

[0032] Figure 8 It is a structural schematic diagram of the intermittent feeding mechanism in the present invention.

[0033] Figure 9 for Figure 8 top view of the structure.

[0034] Figure 10 for Figure 8 Schematic diagram of the internal structure.

[0035] Figure 11 It is a flow chart of fertilization operation in the present invention.

[0036] Figure 12 It is a structural schematic diagram of the material guiding mechanism in the present invention.

[0037] Figure 13 for Figure 12 The structural front view.

[0038] Figure 14 It is a structural schematic diagram of the upper pushing mechanism in the present invention.

[0039] Figure 15 It is a structural schematic diagram of the intermittent unloading mechanism in the present invention.

[0040] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0041] 1- buoyancy drive mechanism, 101- first arc cavity, 102- second arc cavity, 103- water storage channel, 104- buoyancy drive member, 105- fixed ring, 106- partition plate, 107- first elastic member, 108- mounting plate, 109- wire seat, 110- axial rack, 111- aggregate hopper, 112- fertilizer pipe, 113- external soil moistening water tray, 114- water pump, 115- water inlet pipe, 116- drain pipe, 117- internal soil moistening cone, 2- intermittent feeding mechanism, 21- first feeding assembly, 211- moving plate, 212- first linkage plate, 213- arc sealing plate, 22- second feeding assembly, 23- feeding power assembly, 231- mounting plate, 232- bidirectional screw, 233- Power motor, 234-bidirectional pushing plate, 235-second elastic member, 236-radial extrusion member, 24-material gathering assembly, 241-material gathering plate, 242-second linkage plate, 243-arc-shaped attachment plate, 244-positioning port, 245-adjusting ring body, 246-positioning rod, 3-material guiding mechanism, 301-material guiding ring body, 302-semicircular transfer cavity, 303-inclined material guiding port, 304-limiting groove, 4-upper pushing mechanism, 401-upper pushing ring body, 402-limiting member, 403-inclined material guiding groove, 5-intermittent unloading mechanism, 51-semicircular unloading assembly, 511-semicircular unloading box, 512-unloading port, 52-semicircular pushing plate, 53-center support seat, 54-unloading shaft, 55-unloading gear column. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Specific embodiment 1

[0044] See also Figure 1-15 The present invention is a fertilizer application device based on the buoyancy drive principle, comprising a buoyancy drive mechanism 1, an intermittent feeding mechanism 2, a material guiding mechanism 3, an upward pushing mechanism 4 and an intermittent unloading mechanism 5;

[0045] The buoyancy drive mechanism 1 includes a first arcuate cavity 101 and a second arcuate cavity 102 symmetrically arranged. The diameter of the first arcuate cavity 101 gradually increases from the inside to the outside, and the diameter of the second arcuate cavity 102 gradually increases from the inside to the outside. The buoyancy drive mechanism 1 also includes two symmetrically arranged water storage channels 103. The water storage channels 103 are provided with buoyancy drive members 104. The position of the buoyancy drive members 104 inside the water storage channels 103 changes with the water level.

[0046] The intermittent feeding mechanism 2 includes a first feeding assembly 21, a second feeding assembly 22, and a feeding power assembly 23. The first feeding assembly 21 and the second feeding assembly 22 are symmetrically arranged. The first feeding assembly 21 symmetrically slides and fits inside the first arc-shaped cavity 101, and the second feeding assembly 22 symmetrically slides and fits inside the second arc-shaped cavity 102. The feeding power assembly 23 is used to realize the relative movement of the two first feeding assemblies 21 and the two second feeding assemblies 22.

[0047] The material guide mechanism 3 is coaxially fixedly arranged below the arc-shaped cavity. The material guide mechanism 3 includes a material guide ring 301 whose diameter gradually increases from the inside to the outside. A semicircular transfer cavity 302 is formed at the bottom of the material guide ring 301. The outer surface of the material guide ring 301 is provided with an inclined material guide port 303 connected to the corresponding semicircular transfer cavity 302.

[0048] The upper pushing mechanism 4 includes an upper pushing ring body 401 whose diameter gradually increases from the inside to the outside. The inner surface of the upper pushing ring body 401 fits with the outer surface of the corresponding guide ring body 301. The first arc-shaped cavity 101 is gap-matched with the corresponding upper pushing ring body 401, and the second arc-shaped cavity 102 is gap-matched with the corresponding upper pushing ring body 401. When the inclined guide port 303 and the corresponding semicircular transfer cavity 302 are in a connected state, the upper pushing ring body 401 can push the falling fertilizer to the inclined guide port 303 by moving upward. Under the action of the inclined surface, the fertilizer flows into the semicircular transfer cavity 302, thereby realizing the unloading of the fertilizer inside the first arc-shaped cavity 101 and the second arc-shaped cavity 102;

[0049] The intermittent unloading mechanism 5 is rotatably arranged at the bottom of the material guiding mechanism 3. The intermittent unloading mechanism 5 includes a semicircular unloading component 51 and a semicircular pushing plate 52. The extension directions of the semicircular unloading component 51 and the semicircular pushing plate 52 are opposite. The semicircular unloading component 51 and the semicircular transfer cavity 302 are arranged in a one-to-one correspondence. The semicircular pushing plate 52 and the upper pushing ring body 401 are arranged in a one-to-one correspondence. The up and down movement of the upper pushing ring body 401 is realized by the rotation of the semicircular pushing plate 52.

[0050] In this embodiment of the present invention, the buoyancy drive mechanism 1 further includes a fixing ring 105 whose diameter gradually increases from the inside to the outside. A partition plate 106 is fixedly provided inside the fixing ring 105 to divide the inside of the fixing ring 105 into a first arc-shaped cavity 101 and a second arc-shaped cavity 102 by the partition plate 106.

[0051] The first arc-shaped cavity 101 and the second arc-shaped cavity 102 are both provided with a first elastic member 107 fixedly connected to the partition plate 106. The surface of the outermost fixed ring 105 is connected to a mounting plate 108 through a support frame. The entire fertilizing device can be installed on the mobile body through the mounting plate 108, so that the fertilizing device moves with the vehicle body. The distance traveled by the mobile body each time is controlled to be the distance between the two fertilizing pits, ensuring that the fertilizing device can be moved directly above the fertilizing pit every time the vehicle body moves.

[0052] In this embodiment of the present invention, the water storage channel 103 is connected to the outermost fixing ring 105 via a fixing frame, and a wire holder 109 is fixedly provided on the top of the water storage channel 103;

[0053] An axial rack 110 is slidingly provided on the side surface of the outermost fixed ring 105. The axial rack 110 is arranged in a one-to-one correspondence with the water storage channel 103, and a traction rope passing through the corresponding wire seat 109 is connected between the axial rack 110 and the buoyancy driving member 104; through this structural arrangement, the upward movement of the axial rack 110 is achieved by the downward movement of the buoyancy driving member 104, and the downward movement of the buoyancy driving member 104 is controlled by the drop in water level. In the present application, every time the intermittent unloading mechanism 5 rotates 180°, the distance that the buoyancy driving member 104 drops as the water level is certain. By controlling the water level change in the water storage channel 103, the buoyancy driving member 104 is kept consistent in the distance it drops each time.

[0054] In this embodiment of the present invention, the buoyancy drive mechanism 1 further includes a collecting hopper 111, which is fixedly connected to the outermost fixed ring 105. A fertilizer pipe 112 is fixedly provided at the bottom of the collecting hopper 111. When the fertilizing device is moved to the top of the fertilizing pit by the vehicle body, the height of the fertilizer pipe 112 is adjusted so that the lower end of the fertilizer pipe 112 is close to the fertilizing pit, so that the discharged fertilizer can fall completely into the fertilizing pit.

[0055] An outer soil and water tray 113 is fixedly provided on the outer surface of the fertilization pipe 112, and a water pump 114 is fixedly installed on the top of the outer soil and water tray 113. The water outlet of the water pump 114 is connected to the inside of the outer soil and water tray 113 through the outlet pipe, and the water inlet of the water pump 114 is connected to the water inlet pipe 115. A drain pipe 116 is connected between the two water storage channels 103, and the drain pipe 116 is connected to the water inlet pipe 115;

[0056] An inner moistening cone disk 117 coaxial with the fertilization pipe 112 is provided inside the fertilization pipe 112, and the top of the inner moistening cone disk 117 is connected to the outer moistening water disk 113 through a connecting pipe. By providing the outer moistening water disk 113 and the inner moistening cone disk 117, before fertilizing, the water inside the water storage channel 103 is sprayed into the fertilization pit to form an outer moistening water circle and an inner moistening water circle. Under the action of the falling water level, the buoyancy drive member 104 and the traction rope drive the axial rack 110 to move upward, thereby driving the intermittent unloading mechanism 5 to rotate 180° so that the discharge port on the semicircular unloading assembly 51 is set downward, and the mixed fertilizer (fertilizer + organic fine soil) flows along the fertilization channel 112 to the area between the outer moistening water disk 113 and the inner moistening cone disk 117. Through this soil moistening fertilization method, the fertilizer after fertilization is partially dissolved in the soil near the roots of the crops, thereby accelerating the absorption of fertilizer by the crops.

[0057] In this embodiment of the present invention, the first feed assembly 21 and the second feed assembly 22 each include a plurality of movable plates 211 in a radial array. The movable plates 211 are fixedly connected to each other via a first linkage plate 212. The first elastic member 107 (arc spring structure) inside the first arc-shaped cavity 101 is fixedly connected to the corresponding movable plate 211. The first elastic member 107 inside the second arc-shaped cavity 102 is fixedly connected to the corresponding movable plate 211.

[0058] An arc-shaped sealing plate 213 is fixedly provided at the bottom of the movable plate 211, the first arc-shaped cavity 101 slides with the corresponding arc-shaped sealing plate 213, the second arc-shaped cavity 102 slides with the corresponding arc-shaped sealing plate 213, the two adjacent arc-shaped sealing plates 213 inside the first arc-shaped cavity 101 are snap-fitted (at this time, the corresponding first elastic member 107 is in a stretched state), and the two adjacent arc-shaped sealing plates 213 inside the second arc-shaped cavity 102 are snap-fitted (at this time, the corresponding first elastic member 107 is in a stretched state).

[0059] In this embodiment of the present invention, the feeding power assembly 23 includes two symmetrically arranged mounting plates 231, between which a bidirectional screw 232 is rotatably arranged, and one end of the bidirectional screw 232 is connected to the output end of a power motor 233 on the surface of one of the mounting plates 231;

[0060] Two bidirectional pushing plates 234 are symmetrically arranged between the two mounting plates 231. The bidirectional pushing plates 234 fit closely with the first linkage plates 212 on both sides thereof. A second elastic member 235 is fixedly arranged between the bidirectional pushing plates 234 and the corresponding mounting plates 231. When the two adjacent arc-shaped sealing plates 213 are engaged with each other, the bidirectional pushing plates 234 fit closely with the first linkage plates 212 on both sides thereof. At this time, the second elastic member 235 is in a stretched state.

[0061] A radial extrusion piece 236 is provided between the bidirectional push plate 234 and the corresponding mounting plate 231, and is fitted with the bidirectional push plate 234. The radial extrusion piece 236 is slidably connected to the top of the partition plate 106, and the radial extrusion piece 236 is threadedly engaged with the bidirectional screw 232. The position of the bidirectional push plate 234 is limited by the radial extrusion piece 236. When the two relatively arranged radial extrusion pieces 236 move away from each other, the second elastic piece 235 gradually contracts and the first elastic piece 107 also contracts synchronously, so that the two bidirectional push plates 234 move away from each other. In this process, the two adjacent arc-shaped sealing plates 213 move away from each other, and the fertilizer falls onto the upper pushing ring body 401 through the opening of the bayonet.

[0062] In this embodiment of the present invention, a limiting member 402 is fixedly provided on the outer surface of the upper pushing ring body 401, and the limiting member 402 slides with the limiting groove 304 on the inner surface of the corresponding guide ring body 301. The limiting groove 304 on the inner surface of the outermost fixed ring 105 slides with the corresponding limiting member 402. Through the above-mentioned structural arrangement, the upper pushing ring body 401 cannot rotate during the up and down movement. A slanted guide groove 403 corresponding to the slanted guide port 303 is provided on the top of the upper pushing ring body 401. The fertilizer falling through the open bayonet directly falls into the corresponding slanted guide groove 403.

[0063] In this embodiment of the present invention, the intermittent unloading mechanism 5 further includes a central support seat 53, which is fixedly disposed inside the innermost fixed ring 105. Two unloading shafts 54 are symmetrically disposed on the circumference of the central support seat 53 for rotation. The unloading shafts 54 are rotatably connected to the outermost fixed ring 105.

[0064] Both ends of the unloading shaft 54 are fixedly provided with unloading tooth columns 55, which are engaged with the corresponding axial racks 110; the semicircular push plate 52 is fixedly provided on the peripheral side of the unloading shaft 54, and the semicircular unloading assembly 51 includes a semicircular unloading box 511 fixedly connected to the unloading shaft 54, and the peripheral side of the semicircular unloading box 511 is provided with a unloading port 512; by providing an axial rack 110 engaged with the intermittent unloading mechanism 5, a traction rope is connected between the buoyancy drive member 104 and the axial rack 110 inside the water storage channel 103. During the entire fertilization operation, the rotation of the intermittent unloading mechanism 5 is achieved by the buoyancy drive member 104 as the water level drops, and there is no need to add an additional power source to control the rotation of the intermittent unloading mechanism 5, thereby greatly reducing the power loss and reducing the operating cost of the fertilization device. Specific embodiment 2

[0066] Based on the specific embodiment 1, the intermittent feeding mechanism 2 further includes a material gathering component 24; wherein,

[0067] The material gathering assembly 24 includes a material gathering plate 241, and each material gathering plate 241 is fixedly connected by a second linkage plate 242. The first arc-shaped cavity 101 slides with the corresponding material gathering plate 241, and the second arc-shaped cavity 102 slides with the corresponding material gathering plate 241. One end of the second linkage plate 242 is fixedly provided with an arc-shaped attachment plate 243 that fits tightly against the outer surface of the outermost fixing ring 105. The side surface of the arc-shaped attachment plate 243 is provided with a positioning hole 244.

[0068] The material gathering component 24 also includes an adjusting ring body 245 rotatably arranged on the outer surface of the outermost fixed ring 105, and an ear plate corresponding to the arc-shaped attachment plate 243 is fixedly arranged on the top of the adjusting ring body 245, and the surface of the ear plate is threadedly matched with a positioning rod 246 that is plugged into the corresponding positioning port 244; when it is necessary to adjust the size of the storage space between the two first material feeding components 21 corresponding to the first arc cavity 101, a corresponding positioning rod 246 is inserted into the positioning port 244 at the corresponding position, and the material gathering plate 241 corresponding to the positioning rod 246 can be realized by rotating the adjusting ring body 245 to slide inside the first arc cavity 101, thereby realizing the regulation of the size of the storage space, so that the fertilizer is gathered to the bayonet between the two adjacent arc sealing plates 213, which is convenient for unloading the fertilizer. The same operation method can also realize the regulation of the size of the storage space between the two first material feeding components 21 corresponding to the second arc cavity 102. Specific embodiment three

[0070] A method for applying fertilizer using a buoyancy-driven fertilizer application device comprises the following steps:

[0071] S01. Different fertilizers are stored in the first arc-shaped cavity 101, and organic fine soil is stored in the second arc-shaped cavity 102. In the initial state, the first elastic member 107 is in a stretched state, the two adjacent arc-shaped sealing plates 213 remain engaged, and the bidirectional push plates 234 are tightly attached to the surfaces of the first linkage plates 212 on both sides.

[0072] S02. When the fertilizer application device moves to the fertilizer application pit, the power motor 233 starts to control the bidirectional screw 232 to rotate forward, so that the two radial extrusion members 236 move to the side away from the bidirectional push plate 234. Under the elastic restoring force of the second elastic member 235, the bidirectional push plate 234 moves toward the corresponding mounting plate 231. Under the elastic restoring force of the first elastic member 107, the engaging openings of the two adjacent arc-shaped sealing plates 213 are opened, and the fertilizer and organic fine soil fall into the corresponding inclined material guide channel 403. As the power motor 233 controls the bidirectional screw 232 to rotate in the opposite direction, the bidirectional push plate 234 moves in the opposite direction and resets.

[0073] S03, the water delivery pump 114 is started to discharge the water in the two water storage channels 103 at the same time, and the discharged water is sprayed into the fertilization pit along the outer moistening water pan 113 and the inner moistening cone pan 117, thereby forming an outer moistening water circle and an inner moistening water circle in the fertilization pit;

[0074] S04, as the water level drops, the buoyancy driving member 104 causes the corresponding axial rack 110 to move upward, and under the cooperation of the axial rack 110 and the discharge tooth column 55, the semicircular discharge box 511 and the semicircular push plate 52 are driven to rotate 180 degrees. At this time, the discharge port 512 on the semicircular discharge box 511 is set vertically downward, and the semicircular push plate 52 pushes the upper push ring 401 upward so that the inclined guide channel 403 is aligned with the corresponding inclined guide channel 303. The fertilizer and organic crushed soil in the inclined guide channel 403 fall into the gathering hopper 111 at the same time for mixing, and the mixed fertilizer falls into the area between the outer moistening soil water circle and the inner moistening soil water circle in the fertilization pit;

[0075] S05, the water delivery pump 114 is started again to control the discharge of the same volume of water. Under the action of the traction rope, the axial rack 110 is moved up again by the same distance, thereby driving the semicircular discharge box 511 and the semicircular push plate 52 to rotate 180 degrees again. At this time, the semicircular discharge box 511 is re-fitted inside the corresponding semicircular transfer cavity 302, and the upper push ring 401 is moved down and reset to make the inclined guide channel 403 disengage from the corresponding inclined guide port 303. The outer moistening water tray 113 and the inner moistening cone tray 117 spray water on the fertilizer pit after fertilization again;

[0076] S06: The fertilizer application device moves to another fertilizer application pit, and steps S02-S05 are repeated to implement the fertilization operation in each fertilizer application pit.

[0077] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fertilizer application device based on the buoyancy drive principle, characterized in that: include: A buoyancy drive mechanism (1), the buoyancy drive mechanism (1) comprising a first arcuate cavity (101) and a second arcuate cavity (102) which are symmetrically arranged, wherein the diameters of the first arcuate cavity (101) and the second arcuate cavity (102) gradually increase from the inside to the outside; the buoyancy drive mechanism (1) further comprises two symmetrically arranged water storage channels (103), wherein a buoyancy drive member (104) is arranged inside the water storage channels (103); An intermittent feeding mechanism (2), the intermittent feeding mechanism (2) comprising a first feeding component (21), a second feeding component (22) and a feeding power component (23); the first feeding component (21) is symmetrically slidably fitted inside the first arc-shaped cavity (101), the second feeding component (22) is symmetrically slidably fitted inside the second arc-shaped cavity (102), and the feeding power component (23) is used to realize the relative movement of the two first feeding components (21) and the two second feeding components (22); A material guiding mechanism (3), the material guiding mechanism (3) is coaxially fixedly arranged below the arc-shaped cavity, the material guiding mechanism (3) comprises a material guiding ring (301) whose diameter gradually increases from the inside to the outside, a semicircular transfer cavity (302) is formed at the bottom of the material guiding ring (301), and an inclined material guiding port (303) communicating with the corresponding semicircular transfer cavity (302) is formed on the outer surface of the material guiding ring (301); An upper pushing mechanism (4), the upper pushing mechanism (4) comprising an upper pushing ring (401) whose diameter gradually increases from the inside to the outside, the inner surface of the upper pushing ring (401) being in contact with the outer surface of the corresponding guide ring (301), the first arc-shaped cavity (101) being in clearance fit with the corresponding upper pushing ring (401), and the second arc-shaped cavity (102) being in clearance fit with the corresponding upper pushing ring (401); An intermittent unloading mechanism (5), wherein the intermittent unloading mechanism (5) is rotatably arranged at the bottom of the material guide mechanism (3), and the intermittent unloading mechanism (5) comprises a semicircular unloading component (51) and a semicircular pushing plate (52), wherein the extension directions of the semicircular unloading component (51) and the semicircular pushing plate (52) are opposite, and the semicircular unloading component (51) and the semicircular transfer cavity (302) are arranged in a one-to-one correspondence, and the semicircular pushing plate (52) and the upper pushing ring (401) are arranged in a one-to-one correspondence; The buoyancy drive mechanism (1) further comprises a fixed ring (105) whose diameter gradually increases from the inside to the outside; the water storage channel (103) and the fixed ring (105) located at the outermost layer are connected via a fixed frame, and a wire seat (109) is fixedly provided on the top of the water storage channel (103); an axial rack (110) is slidably provided on the circumferential side surface of the fixed ring (105) located at the outermost layer, and the axial rack (110) is provided in a one-to-one correspondence with the water storage channel (103), and a traction rope that passes through the corresponding wire seat (109) is connected between the axial rack (110) and the buoyancy drive member (104); The intermittent unloading mechanism (5) further comprises a central support seat (53), two unloading shafts (54) are symmetrically arranged on the peripheral side of the central support seat (53), and unloading tooth columns (55) are fixedly arranged at both ends of the unloading shafts (54), and the unloading tooth columns (55) are meshed with corresponding axial racks (110).

2. A fertilizer application device based on the buoyancy drive principle according to claim 1, characterized in that: A partition plate (106) is fixedly provided inside the fixing ring (105), and the interior of the fixing ring (105) is divided into a first arc-shaped cavity (101) and a second arc-shaped cavity (102) by the partition plate (106); A first elastic member (107) fixedly connected to the partition plate (106) is provided inside the first arc-shaped cavity (101) and the second arc-shaped cavity (102), and a mounting plate (108) is connected to the surface of the outermost fixed ring (105) via a support frame.

3. A fertilizer application device based on the buoyancy drive principle according to claim 2, characterized in that: The buoyancy drive mechanism (1) further comprises a collecting hopper (111), wherein the collecting hopper (111) is fixedly connected to the fixing ring (105) located at the outermost layer, and a fertilizer pipe (112) is fixedly provided at the bottom of the collecting hopper (111); An outer soil and water tray (113) is fixedly provided on the outer surface of the fertilizing pipe (112), a water pump (114) is fixedly installed on the top of the outer soil and water tray (113), the water outlet of the water pump (114) is connected to the inside of the outer soil and water tray (113) through the water outlet pipe, the water inlet of the water pump (114) is connected to the water inlet pipe (115), a drainage pipe (116) is connected between the two water storage channels (103), and the drainage pipe (116) is connected to the water inlet pipe (115); An inner soil moistening cone disk (117) coaxial with the fertilizing pipe (112) is provided inside the fertilizing pipe (112), and the top of the inner soil moistening cone disk (117) is connected to the outer soil moistening water disk (113) via a connecting pipe.

4. A fertilizer application device based on the buoyancy drive principle according to claim 3, characterized in that: The first material feeding assembly (21) and the second material feeding assembly (22) both include a plurality of movable plates (211) in a radial array, each movable plate (211) being fixedly connected via a first linkage plate (212), a first elastic member (107) inside the first arc-shaped cavity (101) being fixedly connected to the corresponding movable plate (211), and a first elastic member (107) inside the second arc-shaped cavity (102) being fixedly connected to the corresponding movable plate (211); An arc-shaped sealing plate (213) is fixedly provided at the bottom of the movable plate (211); the first arc-shaped cavity (101) and the corresponding arc-shaped sealing plate (213) are slidably matched; the second arc-shaped cavity (102) and the corresponding arc-shaped sealing plate (213) are slidably matched; two adjacent arc-shaped sealing plates (213) inside the first arc-shaped cavity (101) are snap-fitted; and two adjacent arc-shaped sealing plates (213) inside the second arc-shaped cavity (102) are snap-fitted.

5. A fertilizer application device based on the buoyancy drive principle according to claim 4, characterized in that: The feeding power assembly (23) comprises two symmetrically arranged mounting plates (231), a bidirectional screw (232) is rotatably arranged between the two mounting plates (231), and one end of the bidirectional screw (232) is connected to the output end of a power motor (233) on the surface of one of the mounting plates (231); Two bidirectional pushing plates (234) are symmetrically arranged between the two mounting plates (231), the bidirectional pushing plates (234) are in contact with the first linkage plates (212) on both sides thereof, and a second elastic member (235) is fixedly arranged between the bidirectional pushing plates (234) and the corresponding mounting plates (231); A radial extrusion piece (236) is provided between the bidirectional push plate (234) and the corresponding mounting plate (231), and is fitted with the bidirectional push plate (234). The radial extrusion piece (236) is slidably connected to the top of the partition plate (106), and the radial extrusion piece (236) is threadedly fitted with the bidirectional screw (232).

6. The fertilizer application device based on the buoyancy drive principle according to claim 5, characterized in that: A limiting member (402) is fixedly provided on the outer surface of the upper pushing ring body (401), and the limiting member (402) is slidably matched with the limiting groove (304) on the inner surface of the corresponding guide ring body (301). The limiting groove (304) on the inner surface of the outermost fixed ring (105) is slidably matched with the corresponding limiting member (402), and a slanted material guide groove (403) corresponding to the slanted material guide port (303) is provided on the top of the upper pushing ring body (401).

7. A fertilizer application device based on the buoyancy drive principle according to claim 6, characterized in that: The central support seat (53) is fixedly arranged inside the innermost fixed ring (105), and the discharge shaft (54) is rotatably connected to the outermost fixed ring (105); the semicircular push plate (52) is fixedly arranged on the peripheral side of the discharge shaft (54), and the semicircular discharge assembly (51) includes a semicircular discharge box (511) fixedly connected to the discharge shaft (54), and a discharge port (512) is provided on the peripheral side of the semicircular discharge box (511).

8. The fertilizer application device based on the buoyancy drive principle according to claim 7, characterized in that: The intermittent feeding mechanism (2) further includes a material gathering component (24); wherein, The material gathering assembly (24) includes a material gathering plate (241), each material gathering plate (241) is fixedly connected via a second linkage plate (242), the first arc-shaped cavity (101) is slidably engaged with the corresponding material gathering plate (241), the second arc-shaped cavity (102) is slidably engaged with the corresponding material gathering plate (241), one end of the second linkage plate (242) is fixedly provided with an arc-shaped attachment plate (243) that is tightly fitted on the outer surface of the outermost fixing ring (105), and a positioning opening (244) is provided on the side surface of the arc-shaped attachment plate (243); The material gathering assembly (24) further comprises an adjusting ring body (245) rotatably arranged on the outer surface of the outermost fixed ring (105), an ear plate corresponding to the arc-shaped attachment plate (243) being fixedly arranged on the top of the adjusting ring body (245), and a positioning rod (246) threadedly engaged with the corresponding positioning port (244) on the surface of the ear plate.

9. The method for applying fertilizer using a buoyancy-driven fertilizer application device according to claim 8, wherein: The steps include: S01. Different fertilizers are stored in the first arc-shaped cavity (101), and organic fine soil is stored in the second arc-shaped cavity (102). In the initial state, the first elastic member (107) is in a stretched state, the two adjacent arc-shaped sealing plates (213) are kept in a locked state, and the bidirectional push plates (234) are tightly attached to the surfaces of the first linkage plates (212) on both sides. S02. When the fertilizer application device moves to the fertilizer application pit, the power motor (233) starts to control the bidirectional screw (232) to rotate in the forward direction, so that the two radial extrusion members (236) move to the side away from the bidirectional push plate (234), and the bidirectional push plate (234) moves to the corresponding mounting plate (231) under the elastic restoring force of the second elastic member (235). Under the elastic restoring force of the first elastic member (107), the engaging openings of the two adjacent arc-shaped sealing plates (213) are opened, and the fertilizer and organic fine soil fall into the corresponding inclined material guide channel (403). As the power motor (233) controls the bidirectional screw (232) to rotate in the reverse direction, the bidirectional push plate (234) moves in the reverse direction and resets; S03, the water delivery pump (114) is started to discharge the water in the two water storage channels (103) at the same time, and the discharged water is sprayed into the fertilizer pit along the outer moistening soil water disk (113) and the inner moistening soil cone disk (117), thereby forming an outer moistening soil water circle and an inner moistening soil water circle in the fertilizer pit; S04, the buoyancy driving member (104) moves upward as the water level drops, and the axial rack (110) and the discharge tooth column (55) cooperate to drive the semicircular discharge box (511) and the semicircular push plate (52) to rotate 180 degrees. At this time, the discharge port (512) on the semicircular discharge box (511) is vertically downwardly arranged, and the semicircular push plate (52) pushes the upper push ring (401) upward so that the inclined guide channel (403) is aligned with the corresponding inclined guide channel (303). The fertilizer and organic crushed soil in the inclined guide channel (403) fall into the gathering hopper (111) at the same time for mixing, and the mixed fertilizer falls into the area between the outer moistening soil water circle and the inner moistening soil water circle in the fertilization pit; S05, the water delivery pump (114) is started again to control the discharge of the same volume of water. Under the action of the traction rope, the axial rack (110) is moved up again by the same distance, thereby driving the semicircular discharge box (511) and the semicircular push plate (52) to rotate 180 degrees again. At this time, the semicircular discharge box (511) is re-fitted inside the corresponding semicircular transfer cavity (302), and the upper push ring (401) is moved down and reset so that the inclined material guide channel (403) is separated from the corresponding inclined material guide port (303). The outer moistening water tray (113) and the inner moistening cone tray (117) spray water on the fertilizer pit after fertilization again; S06: The fertilizer application device moves to another fertilizer application pit, and steps S02-S05 are repeated to implement the fertilization operation in each fertilizer application pit.

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