A fertilization device for agricultural planting based on quantitative fertilization

Abstract

This invention relates to the field of agricultural machinery technology. To address the problem that fertilizer adhesion affects the accuracy of quantitative application and the smoothness of fertilization when applying highly viscous fertilizers, a fertilization device for agricultural planting based on quantitative fertilization is disclosed. The device includes a hopper, a quantitative feeding channel, and a replenishment channel. A pusher impeller is installed in the replenishment channel, and a pusher assembly is installed inside the quantitative feeding channel. The pusher assembly includes a square pusher block, a flexible pad, a cleaning scraper, and a transmission assembly. A lifting assembly is located at the top. During operation, the pusher assembly rises to create negative pressure, which, combined with the pusher rod lifting the elastic diaphragm, changes the angle of the inclined plane. This, along with the rotation of the pusher impeller, improves the smoothness of fertilizer dispensing and ensures sufficient filling of the quantitative cavity. When descending, the transmission assembly drives the cleaning scraper to vibrate, scraping away residual fertilizer from the inner wall. Through the synergistic effect of the above structures, this device reduces fertilizer adhesion in the quantitative cavity and feeding channel, ensuring accurate quantitative application, preventing channel blockage, and ensuring smooth dispensing.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a fertilization device for agricultural planting based on quantitative fertilization. Background Technology

[0002] Quantitative fertilization is a crucial step in achieving scientific planting in agricultural production. Excessive fertilization not only wastes fertilizer and increases production costs but can also lead to environmental pollution problems such as soil compaction and eutrophication of water bodies. Insufficient fertilization, on the other hand, affects the normal growth and development of crops, reducing yield and quality. Quantitative fertilization allows for precise nutrient supply according to the needs of crops, ensuring they receive sufficient and appropriate nutrition to promote healthy growth, increase yield and quality, while reducing resource waste and environmental damage caused by fertilizer overuse, thus achieving sustainable agricultural development.

[0003] Chinese Patent CN214430109U discloses a quantitative fertilization device for agricultural planting. The device includes a horizontal base plate, a mixing tank fixedly connected to the top right side of the base plate, a discharge pipe connected to the bottom left side of the mixing tank, and a solenoid valve on the surface of the discharge pipe. A placement box is embedded in the left side of the inner surface of the base plate, and the left side of the discharge pipe extends into the inner cavity of the placement box. A second rotating motor is fixedly connected to the front surface of the placement box. This device uses the output of the second rotating motor to drive a rotating shaft, which in turn drives a rotating wheel. Simultaneously, fertilizer from the mixing tank is transported to the placement box through the discharge pipe. The rotating wheel weighs the fertilizer, and finally, the fertilizer falls through the discharge port, achieving quantitative fertilization. This solves the problem that existing fertilization devices lack quantitative fertilization functionality, resulting in resource waste and inconvenience for users.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Existing quantitative fertilizer application devices usually achieve fertilizer metering through a metering cavity opened on the outside of the rotary wheel. When applying fertilizers with high moisture and viscosity, the fertilizer is prone to sticking to the inside of the metering cavity, affecting its volume and thus affecting the accuracy of metering. Furthermore, when relying solely on the fertilizer's own gravity to enter the metering cavity and fall into the soil through the feeding channel, the fertilizer may also stick to the inner wall of the feeding channel, affecting the smoothness of feeding. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the adhesion of fertilizers with high viscosity in the prior art affects the accuracy of quantitative application and the smoothness of fertilization. To address this, we propose a fertilization device for agricultural planting based on quantitative fertilization.

[0006] To achieve the above objectives, this application adopts the following technical solution: a fertilization device for agricultural planting based on quantitative fertilization, comprising: a fertilization device frame, a hopper fixedly connected to the top of the fertilization device frame, a quantitative feeding channel fixedly connected to the bottom of the hopper, a replenishment channel installed on the side of the quantitative feeding channel, the top of the replenishment channel communicating with the hopper, and the bottom of the replenishment channel communicating with the quantitative feeding channel, a pusher impeller installed at the interface between the replenishment channel and the quantitative feeding channel, the pusher impeller being rotatably connected to the replenishment channel, and a torsion spring installed at the shaft of the pusher impeller, a pusher assembly installed inside the quantitative feeding channel, the pusher assembly comprising a square pusher block, the square pusher block being slidably connected inside the quantitative feeding channel, and a lifting assembly installed on the top of the square pusher block, the lifting assembly being used to move the pusher assembly upward or downward inside the quantitative feeding channel;

[0007] A flexible pad is fixedly connected to the bottom of the square push block, and a cleaning scraper is fixedly connected to the bottom of the flexible pad. An installation slot is opened inside the square push block, and a transmission component is installed inside the installation slot. When the push component moves upward, the transmission component drives the push impeller to rotate counterclockwise and stores force in the torsion spring at its shaft. When the push component moves downward, the transmission component can shake the cleaning scraper.

[0008] Preferably, the transmission assembly includes a transmission block, which is disposed inside the mounting slot, and the bottom end of the transmission block is fixedly connected to the cleaning scraper.

[0009] Preferably, a plurality of first tooth blocks are fixedly connected to one side of the transmission block, the first tooth blocks extend outward through the mounting slot, a spring is fixedly connected to the side of the transmission block away from the first tooth blocks, and the end of the spring away from the transmission block is fixedly connected to the square push block.

[0010] Preferably, a second tooth block is provided on the side of the first tooth block, the second tooth block is fixedly connected to the end of the pusher impeller, and the second tooth block is fixedly connected to the pusher impeller. A plurality of transmission discs are evenly distributed on the outer wall of the second tooth block.

[0011] Preferably, the first tooth block meshes with the transmission disk, and the cross-sectional shape of both the first tooth block and the transmission disk is set as a right-angled triangle. The first tooth block includes a right-angled side plane and an inclined plane, and the right-angled side plane is set horizontally upward.

[0012] Preferably, the lifting assembly includes a support plate, which is disposed inside the quantitative feeding channel and is fixedly connected to the quantitative feeding channel. A motor is installed on the inner wall of the quantitative feeding channel.

[0013] Preferably, the output end of the motor is fixedly connected to a drive gear, and the drive gear is engaged with a driven gear on its side.

[0014] Preferably, a rotating block is fixedly connected to the bottom of the driven gear, and the rotating block is rotatably connected to the inside of the supporting cross plate. A lead screw is coaxially arranged inside the driven gear, and the lead screw is threadedly connected to the driven gear. The bottom end of the lead screw is fixedly connected to the square push block.

[0015] Preferably, a push rod is fixedly connected to the top of the lead screw. When the lead screw is fully lowered, the top surface of the push rod is flush with the bottom surface inside the hopper. The bottom surface inside the hopper is covered with an elastic diaphragm, and the four edges of the elastic diaphragm are fixedly connected to the hopper.

[0016] Preferably, a sealing block is rotatably connected to the bottom end of the quantitative feeding channel. The cross-sectional shape of the sealing block is set as an isosceles triangle. A driving mechanism is installed at the connection between the sealing block and the quantitative feeding channel. The driving mechanism is used to drive the sealing block to rotate to close or open.

[0017] The technical effects and advantages of this invention are as follows:

[0018] In this invention, the negative pressure and gravity generated by the rising pusher assembly work together, combined with the push rod lifting the elastic diaphragm to dynamically change the slope angle, and the power-accumulating rotation of the pusher impeller, effectively improving the smoothness of fertilizer feeding and ensuring efficient filling of the metering cavity. At the same time, when the piston pusher assembly pushes down, it simultaneously scrapes away the residue on the inner wall of the metering cavity's metering channel. The bottom scraper, under the action of the transmission assembly, achieves a shaking-style dynamic scraping, enhancing the peeling force on the fertilizer adhering to the inner wall of the feeding channel. In addition, the coordinated design of no shaking at the top and shaking at the bottom ensures stable feeding and cleaning effect, comprehensively reducing the adhesion of fertilizer in the metering cavity and feeding channel. This avoids affecting the volume of the metering cavity to ensure metering accuracy and prevents blockage of the feeding channel to ensure smooth feeding. Attached Figure Description

[0019] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0020] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the feeding component of the quantitative feeding channel of the present invention in the lowered state;

[0022] Figure 3 This is a cross-sectional structural diagram of the pusher assembly of the quantitative feeding channel of the present invention in the raised state;

[0023] Figure 4 This is an exploded structural diagram of the feeding assembly of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the transmission assembly and the pusher impeller of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the lifting component of the present invention;

[0026] Figure 7 This is a three-dimensional structural diagram of the sealing block portion of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the transmission component of the present invention.

[0028] Legend: 1. Quantitative feeding channel; 2. Replenishing channel; 3. Pushing assembly; 4. Transmission assembly; 5. Lifting assembly; 6. Elastic diaphragm; 7. Hopper; 8. Fertilizer device frame; 9. Sealing block; 10. Pushing impeller; 11. Drive mechanism; 301. Square push block; 302. Mounting slot; 303. Flexible pad; 304. Cleaning scraper; 401. Transmission block; 402. First toothed block; 403. Transmission disc; 404. Second toothed block; 405. Spring; 501. Supporting cross plate; 502. Rotating block; 503. Lead screw; 504. Driven gear; 505. Driving gear; 506. Motor; 507. Push rod. Detailed Implementation

[0029] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0030] Reference Figure 1 As shown, the present invention provides a technical solution: a fertilization device for agricultural planting based on quantitative fertilization, including a fertilization device frame 8, a hopper 7 fixedly connected to the top of the fertilization device frame 8, a quantitative feeding channel 1 fixedly connected to the bottom of the hopper 7, a replenishment channel 2 installed on the side of the quantitative feeding channel 1, the top of the replenishment channel 2 communicating with the hopper 7, and the bottom of the replenishment channel 2 communicating with the quantitative feeding channel 1; the hopper 7 is used to hold fertilizer, and during fertilization, the fertilizer inside the hopper 7 enters the interior of the quantitative feeding channel 1 through the replenishment channel 2 and falls downwards into the soil, completing the fertilization.

[0031] Some fertilizers contain hygroscopic, soluble, or colloidal components, resulting in high viscosity. During quantitative fertilization, these viscous fertilizer particles tend to adhere to the inner wall of the metering chamber and the wall of the feeding channel. As fertilization continues, these deposits gradually accumulate, reducing the volume of the metering chamber and affecting the accuracy of subsequent fertilization. Furthermore, fertilizer adhering to the inner wall of the feeding channel reduces the channel's cross-sectional area, potentially causing blockages and interrupting fertilizer delivery or leading to unstable flow. To address these issues, this application proposes the following improvements:

[0032] Please see Figure 2 , Figure 3 and Figure 7 As shown, a pushing assembly 3 is installed inside the quantitative feeding channel 1. The pushing assembly 3 includes a square pushing block 301, which is slidably connected to the inside of the quantitative feeding channel 1. A flexible pad 303 is fixedly connected to the bottom of the square pushing block 301, and a cleaning scraper 304 is fixedly connected to the bottom of the flexible pad 303. A lifting assembly 5 is installed on the top of the square pushing block 301. The lifting assembly 5 is used to move the pushing assembly 3 up or down inside the quantitative feeding channel 1. A sealing block 9 is rotatably connected to the bottom of the quantitative feeding channel 1. The cross-sectional shape of the sealing block 9 is set as an isosceles triangle. A driving mechanism 11 is installed at the connection between the sealing block 9 and the quantitative feeding channel 1. The driving mechanism 11 is used to drive the sealing block 9 to rotate to close or open.

[0033] When the lifting component 5 moves upward with the pushing component 3, the sealing block 9 is in the closed state. As the pushing component 3 moves upward, the interior of the quantitative feeding channel 1 gradually enters a negative pressure state. When the cleaning scraper 304 moves to the top of the bottom of the feeding channel 2, the fertilizer inside the hopper 7 enters the inner cavity of the quantitative feeding channel 1 through the feeding channel 2 under the action of gravity and negative pressure. When a certain amount is reached, the sealing block 9 opens, and at the same time, the lifting component 5 drives the pushing component 3 to move downward, pushing the fertilizer inside the quantitative feeding channel 1 downward. At the same time, the fertilizer adhering to the inner wall of the quantitative feeding channel 1 can be scraped and cleaned.

[0034] By utilizing the up-and-down movement of the pusher assembly 3 within the quantitative feeding channel 1, fertilizer is efficiently drawn in during the replenishment stage using gravity and negative pressure, ensuring effective filling of the quantitative cavity inside the quantitative feeding channel 1. When the piston pusher assembly 3 pushes down, it can accurately push out the quantitative fertilizer and simultaneously scrape and clean the inner wall of the quantitative feeding channel 1, effectively preventing the accumulation of sticky fertilizer. This stabilizes the volume of the quantitative cavity to ensure quantitative accuracy and reduces the problem of cross-sectional area reduction and blockage caused by adhesives in the feeding channel, ensuring continuous and stable fertilizer delivery. This specifically solves the metering deviation and delivery failure that are prone to occur when applying sticky fertilizer in quantitative fertilization.

[0035] Please see Figure 4 , Figure 5 and Figure 8 As shown, in order to further ensure the smooth flow of fertilizer at the interface between the feeding channel 2 and the feeding assembly 3, and to improve the scraping effect of the feeding assembly 3 on the fertilizer adhering to the inner wall of the quantitative feeding channel 1, this application makes the following improvements: A feeding impeller 10 is installed at the interface between the feeding channel 2 and the quantitative feeding channel 1. The feeding impeller 10 is rotatably connected to the feeding channel 2, and a torsion spring is installed at the shaft of the feeding impeller 10. An installation slot 302 is opened inside the square push block 301. A transmission assembly 4 is installed inside the installation slot 302. When the feeding assembly 3 moves upward, the transmission assembly 4 drives the feeding impeller 10 to rotate counterclockwise and stores force at the torsion spring at its shaft. When the feeding assembly 3 moves downward, the transmission assembly 4 can drive the cleaning scraper 304 to vibrate. The transmission assembly 4 includes a transmission block 401, and the transmission block 401 is disposed inside the installation slot 302. The bottom end is fixedly connected to the cleaning scraper 304. Several first tooth blocks 402 are fixedly connected to one side of the transmission block 401. The first tooth blocks 402 extend outward through the mounting slot 302. A spring 405 is fixedly connected to the side of the transmission block 401 away from the first tooth blocks 402. The end of the spring 405 away from the transmission block 401 is fixedly connected to the square push block 301. A second tooth block 404 is provided on the side of the first tooth block 402. The second tooth block 404 is fixedly connected to the end of the pusher impeller 10. The second tooth block 404 is fixedly connected to the pusher impeller 10. Several transmission discs 403 are evenly distributed on the outer wall of the second tooth block 404. The first tooth block 402 and the transmission discs 403 mesh with each other. The cross-sectional shape of the first tooth block 402 and the transmission discs 403 are both set as right-angled triangles. The first tooth block 402 includes a right-angled side plane and an inclined plane. The right-angled side plane is set horizontally upward.

[0036] When the pushing assembly 3 moves upward, it carries the transmission assembly 4 upward as well. When the first toothed block 402 moves upward, its top right-angled side acts on the right-angled side of the transmission disk 403, thereby pushing the second toothed block 404 to rotate the pushing impeller 10 counterclockwise. While the pushing impeller 10 is rotating, the torsion spring at its shaft stores energy. When the pushing assembly 3 is fully raised above the interface between the feeding channel 2 and the quantitative feeding channel 1, the transmission disk 403 disengages from the first toothed block 402 and rotates clockwise under the elastic potential energy of the torsion spring, thus assisting in breaking up the fertilizer inside the feeding channel 2 and pushing it into the inner cavity of the quantitative feeding channel 1. When the pushing assembly 3 moves downward with the transmission assembly 4, the elastic potential energy of the torsion spring at the shaft of the pushing impeller 10 is completely released, and it can no longer rotate clockwise, so the second toothed block 404 can no longer rotate, and the first toothed block 402... 02 During downward movement, its inclined surface acts on the inclined surface of the transmission disk 403. Under the guidance of the inclined surface, the transmission block 401 is pushed to move away from the first tooth block 402, while compressing the spring 405. After missing a first tooth block 402, the first tooth block 402 is engaged with the transmission disk 403 again under the action of the spring 405. This process repeats. During the descent, the transmission block 401 will vibrate back and forth. Since its bottom end is fixedly connected to the cleaning scraper 304, it can vibrate along with the cleaning scraper 304. Since the cleaning scraper 304 is flexibly connected to the square push block 301 through the flexible pad 303, the flexible pad 303 has a certain buffering effect. This vibration will not be transmitted to the square push block 301 excessively, thus ensuring the stability of the side of the square push block 301 blocking the bottom opening of the feeding channel 2.

[0037] As the feeding assembly 3 rises, it stores power in the feeding impeller 10 via the transmission assembly 4. During the feeding process, the rotation of the feeding impeller 10 effectively breaks up fertilizer that has clumped due to its high viscosity, preventing lumps from clogging the feeding port. At the same time, it pushes the broken material evenly into the quantitative feeding channel 1, ensuring continuous and smooth feeding. This not only improves the fluidity of the fertilizer during the feeding stage but also makes the material entering the piston chamber later more loose, reducing the problem of uneven filling of the quantitative cavity caused by material clumping, and further ensuring the accuracy and stability of quantitative fertilization.

[0038] Existing devices typically use a scraper to push downwards at a constant speed when cleaning the inner wall of the feeding channel. The scraped-off fertilizer may re-adhere to the contact area between the scraper and the wall due to continuous compression, forming a new adhesion layer. This can lead to incomplete removal of localized residues. In this application, the pushing component 3, during its descent, is driven by the transmission component 4 to vibrate the cleaning scraper 304. This vibration, combined with continuous high-frequency vibration and scraping, generates a stronger peeling force on the sticky fertilizer adhering to the inner wall of the quantitative feeding channel 1, facilitating more thorough removal of residues. Furthermore, the impact force generated by the vibration can prevent… The scraped fertilizer re-adheres, thus keeping the feeding channel unobstructed more efficiently and further improving the cleaning effect and fertilization stability. The pushing component 3 does not shake during the upward movement. The outer wall of the flexible pad 303 fits tightly against the inner wall of the quantitative feeding channel 1, which makes it easy to ensure that a stable negative pressure is formed inside the quantitative feeding channel 1 when the pushing component 3 rises. The method of not shaking during the upward movement and shaking during the downward movement is adopted according to the needs. This not only takes into account the stability of the feeding stage to ensure the quantitative basis, but also enhances the cleaning effect of the feeding stage, and comprehensively solves the metering deviation and channel blockage problems that are prone to occur in the quantitative fertilization of sticky fertilizers.

[0039] Please see Figure 2 , Figure 3 and Figure 6 As shown, the lifting assembly 5 includes a support plate 501, which is disposed inside the quantitative feeding channel 1 and is fixedly connected to the quantitative feeding channel 1. A motor 506 is installed on the inner wall of the quantitative feeding channel 1. A drive gear 505 is fixedly connected to the output end of the motor 506, and a driven gear 504 meshes with the side of the drive gear 505. A rotating block 502 is fixedly connected to the bottom of the driven gear 504 and is rotatably connected to the inside of the support plate 501. A lead screw 503 is coaxially disposed inside the driven gear 504 and is threadedly connected to the driven gear 504. The bottom end of the lead screw 503 is fixedly connected to the square push block 301.

[0040] The output end of the motor 506 drives the drive gear 505 to rotate, which in turn drives the driven gear 504 to rotate through the meshing relationship. Since the driven gear 504 is threadedly connected to the lead screw 503, and the lead screw 503 cannot rotate with the driven gear 504, when the driven gear 504 rotates, the lead screw 503 can move up and down under the action of the thread, while driving the pusher assembly 3 to move up or down.

[0041] A push rod 507 is fixedly connected to the top of the lead screw 503. When the lead screw 503 is fully lowered, the top surface of the push rod 507 is flush with the bottom surface of the hopper 7. The bottom surface of the hopper 7 is covered with an elastic diaphragm 6, and the four edges of the elastic diaphragm 6 are fixedly connected to the hopper 7. When the feeding assembly 3 is lowered, the push rod 507 is also lowered. The elastic diaphragm 6 covers the inclined surface at the bottom of the hopper 7. When the feeding assembly 3 rises to replenish the material, the top of the lead screw 503 moves the push rod 507 upward, while simultaneously pushing the elastic diaphragm 6 upward, forming a gradually steepening inclined surface on the side of the top opening of the feeding channel 2. By dynamically and gradually changing the angle of the inclined surface, the force balance of the fertilizer inside the hopper 7 can be continuously broken, avoiding the formation of bridging or caking near the top of the feeding channel 2, and ensuring smooth material flow.

[0042] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A fertilizing device for agricultural cultivation based on quantitative fertilization, characterized by, The utility model provides a kind of fertilizer device frame, the upper fixed connection of the fertilizer device frame is connected with hopper, the bottom of the hopper is fixedly connected with quantitative discharge channel, the side of the quantitative discharge channel is equipped with replenishment channel, the top of the replenishment channel is communicated with hopper, and the bottom of the replenishment channel is communicated with quantitative discharge channel, the interface of the replenishment channel and quantitative discharge channel is equipped with pusher impeller, the pusher impeller is rotatably connected between the replenishment channel, and the pivot of the pusher impeller is equipped with torsion spring, the inside of the quantitative discharge channel is equipped with pusher assembly, the pusher assembly includes square push block, the square push block is slidably connected in the inside of quantitative discharge channel, the top of the square push block is equipped with lifting assembly, and the lifting assembly is used to move upwards or downwards in the inside of quantitative discharge channel with pusher assembly. The bottom of the square push block is fixedly connected with flexible pad, and the bottom of the flexible pad is fixedly connected with cleaning scraper, the inside of the square push block is equipped with mounting notch, the inside of the mounting notch is equipped with transmission assembly, when pusher assembly moves upwards, transmission assembly rotates counterclockwise with pusher impeller, and stores force to torsion spring at its pivot, when pusher assembly moves downwards, transmission assembly can shake with cleaning scraper. The transmission assembly includes transmission block, and the transmission block is arranged in the inside of mounting notch, and the bottom of the transmission block is fixedly connected with cleaning scraper. The side of the transmission block is fixedly connected with a plurality of first tooth blocks, the first tooth blocks are outwardly extended through mounting notch, the side of the transmission block away from the first tooth blocks is fixedly connected with spring, and the end of the spring away from the transmission block is fixedly connected with the square push block. The side of the first tooth block is provided with second tooth block, the second tooth block is fixedly connected to the end of the pusher impeller, and the second tooth block is fixedly connected between the pusher impeller, and the outer wall of the second tooth block is evenly distributed with a plurality of transmission discs. The first tooth block and transmission disc are mutually engaged, the cross-sectional shape of the first tooth block and transmission disc is all set as right triangle, the first tooth block includes right angle side plane and inclined plane, and the right angle side plane is horizontally upward.

2. The fertilizing device for agricultural planting based on quantitative fertilization according to claim 1, characterized in that: The lifting assembly includes support cross plate, the support cross plate is arranged in the inside of quantitative discharge channel, and the support cross plate is fixedly connected with quantitative discharge channel, and the inner wall of the quantitative discharge channel is equipped with motor.

3. The fertilizing device for agricultural planting based on quantitative fertilization according to claim 2, characterized in that: The output end of the motor is fixedly connected with driving gear, and the side of the driving gear is engaged with driven gear.

4. The fertilizing device for agricultural planting based on quantitative fertilization according to claim 3, characterized in that: The bottom of the driven gear is fixedly connected with rotating block, and the rotating block is rotatably connected in the inside of support cross plate, the inside of the driven gear is coaxially provided with lead screw, and the lead screw is threadedly connected with the driven gear, and the bottom of the lead screw is fixedly connected with the square push block.

5. The fertilizing device for agricultural planting based on quantitative fertilization according to claim 4, characterized in that: The top of the lead screw is fixedly connected with push rod, when the lead screw is completely lowered, the top surface of the push rod is flush with the inside bottom surface of the hopper, the inside bottom surface of the hopper is covered with elastic diaphragm, and the four edges of the elastic diaphragm are fixedly connected with the hopper.

6. The fertilizing device for agriculture planting based on quantitative fertilization according to claim 1, characterized in that: The bottom end of the quantitative feeding channel is rotationally connected with a blocking block, the cross-sectional shape of the blocking block is set as an isosceles triangle, a driving mechanism is installed at the connection between the blocking block and the quantitative feeding channel, and the driving mechanism is used for driving the blocking block to rotate to close or open.

Images