A fixed-point fertilization device for row-sown wheat

Abstract

The present invention discloses a fixed-point fertilizing device for row-sowing wheat, which belongs to the technical field of agricultural equipment. The structure of the device comprises a vehicle body connecting component, a fertilizer storage component and a plurality of fixed-point fertilizing components; the fixed-point fertilizing component comprises a hollow cylinder, a side of the hollow cylinder is connected with a depth positioning arm, the depth positioning arm is slidably connected to a guide cylinder on the side of an L-shaped frame, a cavity is provided in the hollow cylinder, a conical cylinder is detachably fixedly installed at the bottom of the hollow cylinder, the lower end of the cavity extends into the conical cylinder, an injection pipe is connected with the cavity through a hose, a fertilizer injection piston is vertically slidably installed in the cavity, and a plurality of guide tubes are embedded and installed at the bottom of the conical cylinder; the fixed-point fertilizing component of the present application can penetrate into a relatively deep position on the ground to carry out fertilizing operations, ensure the fertilizing depth, and compact the soil in the area where the fertilizer is located during fertilizing, effectively resist the erosion of rainwater, avoid the fertilizer being eroded by rainwater and lost, improve the utilization efficiency of the fertilizer, and enhance the fertilizer application effect.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, in particular to a fixed-point fertilization device for row-sown wheat. Background Art

[0002] Wheat is planted in rows, which can improve ventilation and light conditions within the wheat colony. During the growth process, good ventilation can reduce field humidity and reduce the incidence of diseases. Adequate light ensures the normal photosynthesis of wheat leaves and promotes the accumulation of photosynthetic products.

[0003] In northwest China, soil erosion is severe due to natural factors such as variable climate, concentrated precipitation, and undulating terrain. Water and wind erosion are the main forms of erosion, especially under the influence of strong spring winds and heavy summer rains. In these situations, the traditional fertilization method of trenching and backfilling will cause the soil structure to become loose. Under the influence of rainwater erosion, fertilizer on slopes will gradually accumulate in depressions as it erodes. Over time, this will cause uneven distribution of fertilizer across the surface.

[0004] In addition, an agricultural fertilization control device with application number CN202410542905.5 is disclosed in the patent document. A method of periodically squeezing the fertilization plate on the side of the material-diverting disc is used to achieve intermittent fertilizer delivery. Specifically, it includes a first support plate, a first fixed plate, a sliding rod, a fertilization mechanism and a material distribution barrel. The bottom of the first support plate is fixedly connected to the first fixed plate, the first fixed plate is slidably connected to the sliding rod, a fertilization mechanism is provided on the sliding rod, and a material distribution barrel is installed on the first support plate. The fertilization mechanism includes a roller frame, an extension block, a fertilization plate, a first elastic member, a material-diverting disc and a first torsion spring. The sliding rod is rotatably connected to the roller frame, and a square groove is provided in a circumferential array on the surface of the roller frame. The circumferential array of square grooves in the roller frame is slidably connected to an extension block, and both sides of the extension block are slidably connected to a fertilizing plate, a first elastic member is provided between the fertilizing plate and the extension block, and the extension block is rotatably connected to a material diverter disc through an L-shaped frame, and a first torsion spring is provided between the material diverter disc and the L-shaped frame of the extension block, and a spiral slide groove is provided on the circumferential surface of the material diverter disc, and a clamping column is fixedly connected to one side of the fertilizing plate, and the clamping column is slidably connected to the spiral slide groove of the material diverter disc. When the fertilizing plate moves, it is used to squeeze the material diverter disc to move, and a lifting mechanism is provided on the first support plate, and the lifting mechanism is used to lift the fertilizing mechanism, and a trigger mechanism is provided on the first support plate. When the fertilizing mechanism is active, it is used to trigger the mechanism to make the fertilizer in the distributing barrel enter the fertilizing mechanism;

[0005] When using the technical solution in the above-mentioned patent document, the equipment is manually pushed to drive the rotation of the material-dispensing disc, so that the lower ends of multiple fertilizer plates distributed on the circumference of the material-dispensing disc are inserted into the ground and then pulled out in turn, leaving the fertilizer in the soil; but since the multiple fertilizer plates rotate around the axis of the material-dispensing disc, in order to avoid large-scale digging damage to the soil caused by the fertilizer plates and to ensure the smooth rotation of the material-dispensing disc, the length of the fertilizer plates is limited, so that the fertilizer plates cannot effectively act on deeper positions on the ground, and the fertilization capacity is limited; and the process of discharging fertilizer from the inside of the equipment mainly relies on gravity, and long-term use causes soil adhesion, resulting in poor discharge of fertilizer; therefore, the present application provides a fixed-point fertilization equipment for row-sown wheat. Summary of the Invention

[0006] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a fixed-point fertilization equipment for row-sown wheat. The fixed-point fertilization component of the equipment can penetrate into a deeper position on the ground to carry out fertilization operations, thereby ensuring the fertilization depth. At the same time, the soil in the area where the fertilizer is located is compacted to effectively resist the erosion of rainwater, thereby preventing the fertilizer from being lost due to erosion by rainwater, improving the utilization efficiency of the fertilizer, and enhancing the fertilizer application effect.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] Provided is a fixed-point fertilization device for row-sown wheat, comprising a vehicle body connecting component, a fertilizer storage component, and multiple fixed-point fertilization components; the fertilizer storage component is fixedly mounted on the top of the vehicle body connecting component, and the multiple fixed-point fertilization components are mounted at equal intervals on the side of the vehicle body connecting component.

[0009] Furthermore, the vehicle body connecting component includes an L-shaped frame, which is connected to the power equipment; the power equipment can use agricultural tractors such as John Deere agricultural machinery tractors, Dongfanghong tractors, Zoomlion tractors, wheeled tractors, crawler tractors and walk-behind tractors, and the specific equipment model can be adjusted according to the number of fixed-point fertilization components.

[0010] Furthermore, the fertilizer storage component includes a fertilizer storage box, which is fixedly mounted on the top of the L-shaped frame. The bottom of the fertilizer storage box is fixed and connected with a plurality of injection pipes, and the number of the injection pipes is consistent with the number of the fixed-point fertilization components.

[0011] Furthermore, the fixed-point fertilization component includes a hollow cylinder, a depth positioning arm is connected to the side of the hollow cylinder, the depth positioning arm is slidably connected to the guide cylinder on the side of the L-shaped frame, a cavity is provided in the hollow cylinder, a conical cylinder is detachably fixedly installed at the bottom of the hollow cylinder, the lower end of the cavity extends into the conical cylinder, an injection pipe is connected to the cavity through a hose, a fertilizer injection piston is vertically slidably installed in the cavity, a plurality of conduits are embedded in the bottom of the conical cylinder, and the upper ends of the conduits are connected to the cavity;

[0012] The bottom of the fertilizer injection piston, the inner side wall of the cavity and the upper side of the bottom of the cavity together form a fertilizer injection chamber.

[0013] Furthermore, a screw and a rotary driver for driving the screw to rotate are installed in the hollow cylinder, the lower end of the screw extends into the interior of the fertilizer injection piston, an internal threaded ring is fixedly installed on the top of the fertilizer injection piston, and the screw and the internal threaded ring are connected by threaded transmission.

[0014] In the present application, for controlling the amount of fertilizer injected into the cavity through the hose, an optional technical solution is: a sliding port is provided on the side of the hollow cylinder, the hose is connected to the cavity through the sliding port, and the side of the fertilizer injection piston can seal the lower end of the sliding port.

[0015] In the present application, another optional technical solution for controlling the amount of fertilizer injected into the cavity through the hose is: a valve is provided on the injection pipe, and the valve can be a double-flange pneumatic powder butterfly valve with model D641X or a split butterfly valve with model BVSSA03-AB-350.

[0016] Furthermore, the side of the fertilizer injection piston is integrally formed with a ridge, and the ridge is engaged and slidably connected with the cavity.

[0017] Furthermore, a spherical pestle head is integrally formed at the bottom of the conical tube, the diameter of the spherical pestle head is larger than the bottom diameter of the conical tube and smaller than the middle diameter of the conical tube, a concave surface is provided at the junction of the conical tube and the spherical pestle head, and the lower end of the concave surface passes through the concave surface and is in the same virtual curved surface as the concave surface.

[0018] Furthermore, the bottom of the fertilizer injection piston is provided with a conical surface I, the upper side of the bottom of the cavity is provided with a conical surface II that can fit with the conical surface I, and the upper end of the conduit passes through the conical surface II and is in the same virtual curved surface as the conical surface II.

[0019] Furthermore, the row-sowing wheat fixed-point fertilization equipment also includes a quantitative supply component, which includes a relay bin, and the hose is connected to the cavity through the relay bin; a sealing ring is fixedly installed on the side of the relay bin, and the sealing ring is sleeved and fixedly installed on the outside of the hollow cylinder, and the hose is connected to the sliding port through the relay bin.

[0020] Furthermore, a quantitative piston is vertically slidably installed in the relay chamber, and the circumferential side of the quantitative piston is respectively in contact with the inner wall of the relay chamber and the outer wall of the hollow cylinder. The top of the quantitative piston is fixed and connected with a guide pipe, which passes through the top of the relay chamber and extends toward the outside of the relay chamber, and the hose is connected to the guide pipe.

[0021] Furthermore, the depth positioning arm is connected to the hollow cylinder through a connecting seat; the connecting seat is detachably fixedly installed on the outside of the hollow cylinder, the depth positioning arm is slidably connected to the connecting seat, and the top and bottom of the lower end of the depth positioning arm are respectively fixedly installed with springs, and the other end of the spring is detachably fixedly connected to the connecting seat.

[0022] Furthermore, a linear electric cylinder is fixedly mounted on the guide cylinder, a sleeve is fixedly mounted on the movable end of the linear electric cylinder, and the sleeve is sleeve-connected to the T-shaped column at the bottom of the depth positioning arm.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The fixed-point fertilization equipment for wheat in row sowing of the present invention injects fertilizer into a deeper position on the ground, and uses a conical cylinder to reinforce the soil layer at the bottom and side walls of the pit. After the fertilizer is input, the soil on top of the fertilizer is compacted centrally, so that the bottom, sides and top of the area where the fertilizer is located on the ground are fully compacted. Compared with the traditional large-area surface covering and compaction method, the compaction force is concentrated on the sides of the fixed-point fertilization area, which can effectively resist rain erosion and prevent the fertilizer from being lost due to rain erosion, thereby improving the utilization efficiency of the fertilizer and enhancing the fertilization effect.

[0025] 2. The fixed-point fertilization equipment for row-sown wheat in the example of the present invention controls the downward movement of the depth positioning arm and uses a conical barrel to tamp a deeper pit in the surface of the relatively soft loess soil and black loess soil in northwest China, and reinforces the soil layer at the bottom and side walls of the pit to form a fixed-point fertilization area. Since the conical barrel has a structure that is wide at the top and narrow at the bottom, it can be easily inserted deep into the ground, so that fertilizer can be applied to a deeper position on the ground, and the equipment has a good fertilization capacity.

[0026] 3. The fixed-point fertilization equipment for row-sown wheat of the example of the present invention controls the downward movement of the fertilizer injection piston, and applies the fertilizer in the fertilizer injection chamber to the fixed-point fertilization area through the conduit; since the fertilizer in the fertilizer injection chamber is discharged from the conduit by the push of the fertilizer injection piston, the amount of fertilizer applied is precisely controllable, and the fertilizer is discharged under pressure, so that the opening at the lower end of the conduit is not easily blocked due to the problem of sand adhesion, and the fertilization stability is good.

[0027] 4. In the example of the present invention, the vertical movement of the multiple cones is independently controlled by the fixed-point fertilization equipment for wheat in the row sowing. The multiple cones are divided into two groups, and the multiple cones in the two groups are arranged crosswise. By controlling the alternating rise and fall of the two groups of cones, the number of cones in the state of descending and compacting the ground at the same time is reduced, thereby effectively reducing the horizontal disturbance of the ground layer, ensuring that the fertilizer can be accurately delivered to the predetermined location, and minimizing the adverse effects on the soil structure, which helps to improve the fertilization effect and protect the original state of the soil.

[0028] 5. In the exemplary strip-sowing wheat fixed-point fertilization equipment of the present invention, under the action of the spherical pestle head and multiple guide tubes, the fertilizer slides along the outer wall of the spherical pestle head. Under the action of gravity, the fertilizer is dispersed relatively evenly to the surroundings, forming a ring-shaped fertilizer trace at the bottom of the conical cylinder. This ensures the fixed-point application of fertilizer while preventing excessive concentration of fertilizer, which causes it to agglomerate and affects its effectiveness, thereby providing sufficient and balanced nutrient supply for crop growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 The overall structure of the fixed-point fertilization equipment for wheat seeding provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 The overall structure of the fixed-point fertilization equipment for wheat seeding provided by the embodiment of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 A schematic diagram of the structure of a fixed-point fertilization device for wheat in drill sowing provided by an embodiment of the present invention;

[0033] Figure 4 A cross-sectional view of a hollow cylinder, a tapered cylinder, and a spherical pestle head provided in an embodiment of the present invention;

[0034] Figure 5 An exploded view of the structure of the hollow cylinder, tapered cylinder, depth positioning arm and annular shield provided in an embodiment of the present invention;

[0035] Figure 6 A schematic structural diagram of the connecting seat, depth positioning arm and T-shaped column provided in an embodiment of the present invention;

[0036] Figure 7 For the present invention Figure 4 Enlarged view of point A in the middle;

[0037] Figure 8 For the present invention Figure 4 Enlarged view of point B in the middle;

[0038] Figure 9 A cross-sectional view of a fertilizer injection piston and a hollow cylinder provided in an embodiment of the present invention;

[0039] Figure 10 A cross-sectional view of a sealing ring provided by an embodiment of the present invention;

[0040] Figure 11 The overall structure of the fixed-point fertilization equipment for wheat seeding provided by the embodiment of the present invention is shown in FIG. Figure 3 .

[0041] In the figure: 1 body connecting component, 11 L-shaped frame, 12 guide cylinder, 13 linear electric cylinder, 2 fertilizer storage component, 21 fertilizer storage box, 22 injection pipe, 221 valve, 23 hose, 24 screw rod, 25 rotation driver, 26 fertilizer injection piston, 261 ridge, 262 internal thread ring, 263 cone surface I, 3 fixed-point fertilization component, 31 hollow cylinder, 311 cavity, 312 slide, 32 tapered cylinder, 321 concave surface, 322 conduit, 323 cone surface II, 33 spherical pestle head, 34 connecting seat, 35 depth positioning arm, 36 T-shaped column, 37 spring, 38 annular shield, 4 quantitative supply component, 41 sealing ring, 42 relay bin, 43 quantitative piston, 44 export pipe. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0044] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0048] Example 1:

[0049] like Figure 1 、 Figure 2 and Figure 11 As shown, this embodiment provides a fixed-point fertilization equipment for row-sown wheat, including a vehicle body connecting component 1, a fertilizer storage component 2 and a plurality of fixed-point fertilization components 3; the fertilizer storage component 2 is fixedly mounted on the top of the vehicle body connecting component 1, and the plurality of fixed-point fertilization components 3 are evenly spaced and mounted on the side of the vehicle body connecting component 1 to implement multi-row synchronous fertilization and increase the fertilization efficiency of the equipment.

[0050] like Figure 1 and Figure 2 As shown, the vehicle body connecting component 1 includes an L-shaped frame 11, which is connected to the power equipment; the power equipment can use agricultural tractors such as John Deere agricultural machinery tractors, Dongfanghong tractors, Zoomlion tractors, wheeled tractors, crawler tractors and walk-behind tractors, and the specific equipment model can be adjusted according to the number of fixed-point fertilization components 3.

[0051] like Figure 1 、 Figure 2 and Figure 11 As shown, the fertilizer storage component 2 includes a fertilizer storage box 21, which is fixedly installed on the top of the L-shaped frame 11. The fertilizer storage box 21 stores one or more of urea, ammonium sulfate, superphosphate, calcium magnesium phosphate fertilizer, potassium sulfate, nitrogen phosphorus potassium compound fertilizer, and zinc sulfate. The bottom of the fertilizer storage box 21 is fixed and connected with a plurality of injection pipes 22. The number of the injection pipes 22 is consistent with the number of the fixed-point fertilization components 3. The fertilizer in the fertilizer storage box 21 is discharged outward through the injection pipes 22 by gravity or by a feeding screw built into the fertilizer storage box 21, thereby ensuring the continuity and stability of fertilization.

[0052] like Figure 3 、 Figure 4 and Figure 7 As shown, the fixed-point fertilization component 3 includes a hollow cylinder 31, and a depth positioning arm 35 is connected to the side of the hollow cylinder 31. The depth positioning arm 35 is slidably connected to the guide cylinder 12 on the side of the L-shaped frame 11. The bottom of the hollow cylinder 31 is detachably installed with a conical cylinder 32. The conical cylinder 32 is wide at the top and narrow at the bottom, which is easy to insert into the deep ground. It is suitable for use in the relatively soft loess soil and black loess soil in Northwest China, so that fertilizer can be applied to a deeper position on the ground, and the equipment has a good fertilization capacity.

[0053] like Figure 4 As shown, a cavity 311 is provided in the hollow cylinder 31, and the lower end of the cavity 311 extends into the conical cylinder 32. The injection pipe 22 is connected to the cavity 311 through the hose 23. A fertilizer injection piston 26 is vertically slidably installed in the cavity 311. A plurality of conduits 322 are embedded in the bottom of the conical cylinder 32, and the upper ends of the conduits 322 are connected to the cavity 311. The conduits 322 are L-shaped, which reduces the risk of the lower ends of the conduits 322 being blocked by soil and rocks.

[0054] like Figure 4 As shown, the bottom lower side of the fertilizer injection piston 26, the inner side wall of the cavity 311 and the bottom upper side of the cavity 311 together form a fertilizer injection chamber.

[0055] like Figure 5 、 Figure 7 and Figure 9 As shown, the side of the fertilizer injection piston 26 is integrally formed with a ridge 261, which is engaged and slidably connected with the cavity 311 to limit the rotation of the fertilizer injection piston 26 and ensure the stability of the vertical movement of the fertilizer injection piston 26. A linear electric cylinder 13 is fixedly mounted on the guide cylinder 12, and a sleeve is fixedly mounted on the movable end of the linear electric cylinder 13. The sleeve is sleeve-connected to the T-shaped column 36 at the bottom of the depth positioning arm 35.

[0056] The specific details of the fixed-point fertilization equipment for wheat seeding using this application are as follows:

[0057] 1. Preparation before fertilization: Drive the power equipment and move the entire equipment to the wheat planting area where fertilization is required; start the linear electric cylinder 13 to extend, driving the corresponding depth positioning arm 35 to move downward, and use the conical cylinder 32 to tamp a deep pit on the surface of the relatively soft loess soil and black loess in northwest China, and reinforce the soil layer at the bottom and side walls of the pit to form a fixed fertilization area;

[0058] Second, fertilizer application at a fixed point: The fertilizer in the fertilizer storage box 21 is added to the fertilizer injection chamber through the injection pipe 22, the hose 23 and the sliding port 312. The fertilizer injection piston 26 is controlled to move downward, and the fertilizer in the fertilizer injection chamber is applied to the fixed-point fertilization area through the guide tube 322. The linear electric cylinder 13 is activated to retract, driving the conical cylinder 32 to be pulled out of the pit, completing the fixed-point fertilization operation;

[0059] 3. Soil covering and compaction: Control the power equipment to move the distance of the radius of the conical cylinder 32, start the linear electric cylinder 13 again to extend, use the bottom of the conical cylinder 32 to press the soil on the edge of the pit, so that the edge of the pit collapses, and use the collapsed soil to cover the top of the pit to fill the fertilizer. As the conical cylinder 32 concentrates and compacts the soil on the top of the fertilizer, the pores between the soil particles are reduced, so that the air permeability and water permeability of the soil are reduced to a certain extent. The fertilizer can effectively resist the erosion of rainwater, avoid the fertilizer being eroded by rainwater and lost, improve the utilization efficiency of the fertilizer, and enhance the fertilizer application effect.

[0060] In the above step 1, since the vertical movement of the plurality of conical cylinders 32 is controlled independently of each other, the plurality of conical cylinders 32 are divided into two groups, and the plurality of conical cylinders 32 in the two groups are arranged crosswise, as shown in FIG. Figure 2 As shown, the two groups of cones 32 are controlled to rise and fall alternately, so that the number of cones 32 in the state of descending and compacting the ground at the same time is reduced, effectively reducing the horizontal disturbance of the ground soil layer, ensuring that the fertilizer can be accurately delivered to the predetermined location, and minimizing the adverse effects on the soil structure, which helps to improve the effect of fertilization and protect the original state of the soil.

[0061] In the above step 2, since the fertilizer in the fertilizer injection chamber is discharged from the conduit 322 by the push of the fertilizer injection piston 26, the amount of fertilizer applied is precisely controllable, and the fertilizer is discharged under pressure, so that the opening at the lower end of the conduit 322 is not easily blocked by the problem of sand adhesion, and the fertilization stability is good.

[0062] Using the above-mentioned scheme of the present application, the fertilizer is injected into a deeper position of the ground, and the conical cylinder 32 is used to reinforce the soil layer at the bottom and side walls of the pit. After the fertilizer is put in, the soil on the top of the fertilizer is concentratedly compacted, so that the bottom, sides and top of the area where the fertilizer is located on the ground are fully compacted. Compared with the traditional large-area surface covering and compaction method, the compaction force is concentrated on the surrounding sides of the fixed fertilization area, which can effectively resist the erosion of rainwater and prevent the fertilizer from being lost due to rainwater erosion, thereby improving the utilization efficiency of the fertilizer and enhancing the fertilization effect.

[0063] In order to ensure that the fertilizer can be smoothly injected into the conduit 322 from the fertilizer injection cavity, Figure 7 and Figure 8 As shown, a conical surface I 263 is provided at the bottom of the fertilizer injection piston 26, and a conical surface II 323 that can fit with the conical surface I 263 is provided on the upper side of the bottom of the cavity 311. The upper end of the conduit 322 passes through the conical surface II 323 and is located in the same virtual curved surface as the conical surface II 323; so that the conduit 322 can be Figure 8As shown, the opening size formed on the conical surface II 323 at its upper end is larger than the diameter size of the conical surface II 323, and as the fertilizer injection piston 26 continues to move downward until the conical surface I 263 and the conical surface II 323 are in contact, squeezing pressure in both horizontal and vertical directions is provided simultaneously, so that the fertilizer is fully injected into the conduit 322.

[0064] In the present application, the vertical movement control method of the fertilizer injection piston 26 in the hollow cylinder 31 can be controlled by using a hydraulic rod. The hydraulic rod is installed on the hollow cylinder 31, and the movable end of the hydraulic rod is connected to the fertilizer injection piston 26. The hydraulic rod is activated to extend and retract to control the vertical movement of the fertilizer injection piston 26 in the hollow cylinder 31.

[0065] In this application, the vertical movement control mode of the fertilizer injection piston 26 in the hollow cylinder 31 can also be controlled in the following ways, specifically: Figure 4 、 Figure 5 、 Figure 7 and Figure 9 As shown, the screw rod 24 is rotatably installed in the hollow cylinder 31, and the rotary driver 25 is installed on the top of the hollow cylinder 31. The output shaft of the rotary driver 25 is connected to the screw rod 24 through a coupling. The lower end of the screw rod 24 extends toward the inside of the fertilizer injection piston 26. An internal threaded ring 262 is fixedly installed on the top of the fertilizer injection piston 26. The screw rod 24 and the internal threaded ring 262 are connected by a threaded transmission. Start the rotary driver 25 to control the rotation of the screw rod 24. The threaded transmission between the screw rod 24 and the internal threaded ring 262 drives the fertilizer injection piston 26 to move vertically in the hollow cylinder 31.

[0066] In this application, the specific method for controlling the amount of fertilizer injected into the cavity 311 through the hose 23 is as follows:

[0067] An optional technical solution is: a sliding port 312 is provided on the side of the hollow cylinder 31, the hose 23 is connected to the cavity 311 through the sliding port 312, and the side of the fertilizer injection piston 26 can block the lower end of the sliding port 312, so that the fertilizer can smoothly enter the cavity 311 or be intercepted by the fertilizer injection piston 26.

[0068] Another optional technical solution is: a valve 221 is provided on the injection pipe 22, and the valve 221 can be a double-flange pneumatic powder butterfly valve with model D641X or a split butterfly valve with model BVSSA03-AB-350; the control valve 221 is opened or closed to control the fertilizer in the fertilizer storage box 21 to be discharged or stopped through the injection pipe 22.

[0069] The above two solutions can also be used in combination to improve the control accuracy of the fertilizer injection amount.

[0070] Example 2:

[0071] The features that are the same as those in the first embodiment are not described in detail. The differences between the first embodiment and the present embodiment are as follows: Figure 3 、 Figure 5 and Figure 8 As shown, in this embodiment, a spherical pestle head 33 is integrally formed at the bottom of the conical cylinder 32. The diameter of the spherical pestle head 33 is larger than the bottom diameter of the conical cylinder 32 and smaller than the middle diameter of the conical cylinder 32. A concave surface 321 is provided at the junction of the conical cylinder 32 and the spherical pestle head 33. The lower end of the conduit 322 passes through the concave surface 321 and is located in the same virtual curved surface as the concave surface 321. Figure 8 As shown, since the diameter of the concave surface 321 is smaller than the diameter of the spherical pestle head 33, the soil is pre-contacted with the spherical pestle head 33 during the downward movement of the conical cylinder 32, effectively preventing the soil from flowing back into the conduit 322, and the equipment has good continuous operation stability.

[0072] In addition, since the diameter of the spherical pestle head 33 is larger than the bottom diameter of the conical tube 32 and smaller than the middle diameter of the conical tube 32, the opening size of the top of the pit squeezed by the middle of the conical tube 32 is larger than the diameter of the spherical pestle head 33, so that the fertilizer put into the pit will not be brought out to the ground by the spherical pestle head 33, and the fertilization stability is good.

[0073] Using the above-mentioned solution of this embodiment, under the action of the spherical pestle head 33 and the multiple guide tubes 322, the fertilizer slides along the outer wall of the spherical pestle head 33, and the fertilizer is dispersed relatively evenly to the surroundings under the action of gravity, forming an annular fertilizer application mark at the bottom of the conical tube 32. On the basis of ensuring the fixed-point application of fertilizer, it avoids excessive concentration of fertilizer and causing it to agglomerate and affect the fertilizer effect, providing sufficient and balanced nutrient supply for crop growth.

[0074] Example 3:

[0075] The features that are the same as those in the first embodiment are not described in detail. The differences between the first embodiment and the present embodiment are as follows: Figure 4 、 Figure 5 、 Figure 7 、 Figure 9 and Figure 10 As shown, in this embodiment, the row-sowing wheat fixed-point fertilization equipment also includes a quantitative supply component 4, which includes a relay bin 42, and the hose 23 is connected to the cavity 311 through the relay bin 42; a sealing ring 41 is fixedly installed on the side of the relay bin 42, and the sealing ring 41 is sleeved and fixedly installed on the outside of the hollow cylinder 31, and the hose 23 is connected to the sliding port 312 through the relay bin 42.

[0076] like Figure 7As shown, the fertilizer in the fertilizer storage box 21 passes through the injection pipe 22, the hose 23 and the relay bin 42 in sequence, and finally enters the cavity 311 through the slide 312; the upper side of the bottom of the relay bin 42 is provided with a slope I, and the upper side of the bottom of the slide 312 is provided with a slope II, and the slope I and the slope II are in the same virtual plane, which is staggered with the extension direction of the cavity 311, so that the fertilizer stored in the relay bin 42 can slide smoothly into the cavity 311.

[0077] The fixed-point fertilizing component 3 is inserted deep into the ground. When the fertilizing operation is carried out, the hose 23 is in a straight state. During this process, the fertilizer required for the next fertilizing cycle is filled into the relay chamber 42. Compared with the first embodiment, in which the hose 23 is used as a quantitative tool in a single fertilizing process, the above-mentioned solution of this embodiment uses the relay chamber 42 as an intermediate link connecting the hose 23 and the sliding port 312, which can effectively avoid the situation where the fertilizer slides poorly due to the bending of the hose 23 itself, thereby ensuring the fertilizing accuracy and stability of the fixed-point fertilizing.

[0078] A metering piston 43 is vertically slidably installed in the relay bin 42, and the circumferential sides of the metering piston 43 are respectively in contact with the inner wall of the relay bin 42 and the outer wall of the hollow cylinder 31. The top of the metering piston 43 is fixed and connected with a guide pipe 44, which passes through the top of the relay bin 42 and extends toward the outside of the relay bin 42. The hose 23 is connected to the guide pipe 44. The position of the metering piston 43 is manually slid, and the relative position of the guide pipe 44 and the relay bin 42 is locked using fasteners, so as to facilitate accurate adjustment of the single fertilizer application amount.

[0079] Example 4:

[0080] The features that are the same as those in the first embodiment are not described in detail. The differences between the first embodiment and the present embodiment are as follows: Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, in this embodiment, the depth positioning arm 35 is connected to the hollow cylinder 31 through the connecting seat 34; the connecting seat 34 is detachably fixedly installed on the outside of the hollow cylinder 31, and the depth positioning arm 35 is slidingly connected to the connecting seat 34. The top and bottom of the lower end of the depth positioning arm 35 are respectively fixedly installed with springs 37, and the other end of the spring 37 is detachably fixedly connected to the connecting seat 34.

[0081] The springs 37 on both sides of the depth positioning arm 35 play a role of buffering and shock absorption; when the depth positioning arm 35 moves downward, the spherical pestle head 33 at its end will collide with the stone under the ground; due to the presence of the spring 37, at the moment of impending collision, the spring 37 begins to be compressed. This compression process can absorb part of the impending impact force, so that the spherical pestle head 33 will not directly hit the stone with a large impact force, thereby avoiding the occurrence of loosening of the connecting parts of the equipment, displacement of the internal precision structure or rupture of the outer shell.

[0082] like Figure 5 and Figure 6 As shown, a plurality of annular shields 38 are installed between the depth positioning arm 35 and the connecting seat 34. The annular shields 38 are sleeved on the outside of the spring 37 to prevent sand and soil from entering the spring 37, reduce the wear and corrosion of the spring 37, ensure the stable operation of the equipment and extend its service life.

[0083] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

[0084] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A fixed-point fertilization device for row-sown wheat, comprising a vehicle body connecting component (1), characterized in that: The vehicle body connecting component (1) includes an L-shaped frame (11) connected to the power equipment, a fertilizer storage component (2) is fixedly installed on the top of the L-shaped frame (11), and a plurality of fixed-point fertilizer application components (3) are slidably installed on the side of the L-shaped frame (11); The fertilizer storage component (2) includes a fertilizer storage box (21) fixedly connected to the L-shaped frame (11), and a plurality of injection pipes (22) are fixedly provided at the bottom of the fertilizer storage box (21) and in communication therewith, wherein the number of the injection pipes (22) is the same as the number of the fixed-point fertilization components (3); The fixed-point fertilization component (3) includes a hollow cylinder (31), a depth positioning arm (35) is connected to the side of the hollow cylinder (31), and the depth positioning arm (35) is slidably connected to the guide cylinder (12) on the side of the L-shaped frame (11). A cavity (311) is provided in the hollow cylinder (31) and the conical cylinder (32), and the injection pipe (22) is connected to the cavity (311) through the hose (23). A plurality of conduits (322) are embedded in the bottom of the conical cylinder (32), and the upper ends of the conduits (322) are connected to the cavity (311); A fertilizer injection piston (26) is vertically slidably installed in the cavity (311), and the bottom of the fertilizer injection piston (26), the inner side wall of the cavity (311) and the upper side of the bottom of the cavity (311) together form a fertilizer injection chamber; The bottom of the conical cylinder (32) is integrally formed with a spherical pestle head (33), the diameter of the spherical pestle head (33) being larger than the bottom diameter of the conical cylinder (32) and smaller than the middle diameter of the conical cylinder (32), a concave surface (321) being provided at the junction of the conical cylinder (32) and the spherical pestle head (33), the lower end of the conduit (322) passing through the concave surface (321) and being located within the same virtual curved surface as the concave surface (321).

2. The fixed-point fertilization equipment for wheat seeding according to claim 1, characterized in that: The side of the fertilizer injection piston (26) is integrally formed with a ridge (261), and the ridge (261) is engaged and slidably connected with the cavity (311); A screw rod (24) and a rotary driver (25) for driving the screw rod (24) to rotate are installed in the hollow cylinder (31). The lower end of the screw rod (24) extends into the interior of the fertilizer injection piston (26). An internal threaded ring (262) is fixedly installed on the top of the fertilizer injection piston (26). The screw rod (24) and the internal threaded ring (262) are connected via a threaded transmission.

3. The fixed-point fertilization equipment for row-sowed wheat according to claim 1, characterized in that: The bottom of the fertilizer injection piston (26) is provided with a conical surface I (263), the upper side of the bottom of the cavity (311) is provided with a conical surface II (323) that can fit with the conical surface I (263), and the upper end of the conduit (322) passes through the conical surface II (323) and is located in the same virtual curved surface as the conical surface II (323).

4. The fixed-point fertilization equipment for wheat seeding according to claim 1, characterized in that: It also includes a quantitative supply component (4), which includes a relay chamber (42), and the hose (23) is connected to the cavity (311) through the relay chamber (42); A sealing ring (41) is fixedly installed on the side of the relay chamber (42), and the sealing ring (41) is sleeved and fixedly installed on the outside of the hollow cylinder (31). The hose (23) is connected to the relay chamber (42), and a sliding port (312) that is conductive with the cavity (311) is provided on the side of the hollow cylinder (31), and the relay chamber (42) is connected to the sliding port (312).

5. The fixed-point fertilization equipment for wheat seeding according to claim 4, characterized in that: A quantitative piston (43) is vertically slidably installed in the relay chamber (42), and the peripheral side of the quantitative piston (43) is respectively in contact with the inner wall of the relay chamber (42) and the outer wall of the hollow cylinder (31). The top of the quantitative piston (43) is fixed and connected to a guide pipe (44). The guide pipe (44) passes through the top of the relay chamber (42) and extends toward the outside of the relay chamber (42). The hose (23) is connected to the guide pipe (44).

6. The fixed-point fertilization equipment for row-sowed wheat according to claim 1, characterized in that: The depth positioning arm (35) is connected to the hollow cylinder (31) via a connecting seat (34); The connecting seat (34) is detachably fixedly mounted on the outside of the hollow cylinder (31), the depth positioning arm (35) is slidably connected to the connecting seat (34), the top and bottom of the lower end of the depth positioning arm (35) are respectively fixedly mounted with springs (37), and the other end of the spring (37) is detachably fixedly connected to the connecting seat (34).

7. The fixed-point fertilization equipment for wheat seeding according to claim 1, characterized in that: A linear electric cylinder (13) is fixedly mounted on the guide cylinder (12), a sleeve is fixedly mounted on the movable end of the linear electric cylinder (13), and the sleeve is sleeve-connected to a T-shaped column (36) at the bottom of the depth positioning arm (35).

8. The fixed-point fertilization equipment for wheat seeding according to claim 4, characterized in that: The upper bottom side of the relay bin (42) is provided with an inclined surface I, and the upper bottom side of the sliding opening (312) is provided with an inclined surface II. Inclined surface I and inclined surface II are located in the same virtual plane, and the virtual plane is staggered with the extension direction of the cavity (311).

9. The fixed-point fertilization equipment for row-sowed wheat according to claim 6, characterized in that: A plurality of annular shields (38) are installed between the depth positioning arm (35) and the connecting seat (34), and the annular shields (38) are sleeved on the outside of the spring (37).

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