Double-cavity duckbill for hole drill for vertical separation of seeds and fertilizers

Abstract

This utility model relates to the field of agricultural seeding machinery technology, specifically providing a double-cavity duckbill for a seed-fertilizer vertical splitting seed-fertilizer application device. The structure consists of a fixed duckbill and a movable duckbill hinged together by a hinge and a pin, with a spring between them to allow the movable duckbill to return to its original position. The core innovations are: a double-cavity isolation design: a seed-fertilizer separator is welded inside the fixed duckbill to achieve physical isolation between the seed and fertilizer; a timing control mechanism: an extension plate is provided at the front end of the fertilizer cavity, and a seed-blocking block is welded to the front end of the seed cavity. After the duckbill enters the soil, when the movable duckbill initially opens, the fertilizer falls first (the seed-blocking block prevents the seed from falling), and as it continues to open, the seed detaches from the seed cavity; vertical splitting effect: the extension plate and the seed-blocking block work together to control the timing of the fertilizer application, forming a layered structure of "fertilizer below - seed above". This design achieves staggered vertical splitting of seed and fertilizer through mechanical structural innovation, effectively avoiding direct contact damage between fertilizer and seeds, significantly improving crop emergence rate and seedling growth quality, and providing key technical support for precision seeding.

Description

Technical Field

[0001] This utility model relates to the field of agricultural seeding machinery technology, and in particular to a double-cavity duckbill for a seed-fertilizer vertical application device. Background Technology

[0002] In the context of precision agriculture, seed drills, as a core component of seeding, face the problem of fertilizer contact with seeds during simultaneous application. Fertilizer can easily cause seedling burn during germination, leading to a decrease in germination rate. Developing a dual-cavity duckbill system that enables vertical application of fertilizer to both seeds and seed has become a key technological requirement. Summary of the Invention

[0003] The present invention aims to provide a double-cavity duckbill for applying fertilizer before seeds, thereby achieving stratified application of seeds and fertilizer through time-series control.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: it consists of a moving duckbill, a fixed duckbill, a hinge, a seed-fertilizer partition, an extension plate, a seed-blocking block, a fertilizer cavity, a seed cavity, a semi-circular head rivet, a pin, and a compression spring connecting point.

[0005] Furthermore, the fixed and movable duckbills are connected by hinges and rivets.

[0006] Furthermore, a seed-fertilizer partition is welded inside the fixed duckbill, dividing the internal space of the fixed duckbill into a seed cavity and a fertilizer cavity, which are used to hold seeds and fertilizer respectively.

[0007] Furthermore, the front end length of the fat cavity on the fixed duckbill is slightly greater than the extension plate of the seed cavity, and a seed-blocking block is welded to the front end of the seed cavity.

[0008] Furthermore, when the duckbill enters the soil, the moving duckbill initially opens to allow the fertilizer to fall first (the seed-blocking block prevents the seeds from falling synchronously); as the moving duckbill continues to open, the seeds detach from the seed cavity and fall into the soil.

[0009] Compared to existing technologies, this invention utilizes a synergistic design of seed-blocking blocks and extension plates to construct a precise timing control mechanism for fertilizer application. This means the fertilizer falls into the soil before the seeds, and its vertical height is lower than the seeds, creating a tiered application structure. By improving the sowing structure and optimizing the application logic, this technical solution achieves layered and staggered application of seeds and fertilizer, fundamentally avoiding the direct impact of fertilizer on seed germination. This design effectively improves crop emergence rate, ensures seedling growth quality, and provides reliable technical support for precision agriculture sowing. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of a seed-fertilizer vertical dispensing device of the present invention, with the moving duckbill set to be transparent.

[0011] Figure 2This is a structural diagram of the fixed duckbill of a double-cavity duckbill for vertical seed-fertilizer application according to the present invention.

[0012] Figure 3 This is a three-dimensional structural diagram showing the opening of the moving and fixed duckbill of a double-cavity duckbill for vertical seed-fertilizer application according to this utility model.

[0013] In the diagram: 1. Moving duckbill, 2. Fixed duckbill, 3. Hinge, 4. Seed-fertilizer partition, 5. Extension plate, 6. Seed-blocking block, 7. Fertilizer cavity, 8. Seed cavity, 9. Semi-circular head rivet, 10. Pin, 11. Compression spring hook point. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] The aforementioned double-cavity duckbill for vertical seed-fertilizer application includes a movable duckbill 1, a fixed duckbill 2, a hinge 3, a seed-fertilizer partition 4, an extension plate 5, a seed-blocking block 6, a fertilizer cavity 7, a seed cavity 8, a semi-circular head rivet 9, a pin 10, and a compression spring hook point 11.

[0016] Reference Figure 1 As shown, the fixed duckbill 2 and the hinge 3 are connected together by the pin 10, and the movable duckbill 1 and the hinge 3 are riveted together by the semi-circular head rivet 9. A seed-fertilizer partition 4 is welded onto the fixed duckbill 2. This partition divides the internal space of the fixed duckbill 2 into a seed cavity 8 and a fertilizer cavity 7, which are used to hold seeds and fertilizer, respectively.

[0017] Reference Figure 2 As shown, the length of the extended plate 5 of the fixed duckbill 2 cavity is slightly greater than the length of the front end of the seed cavity, and a seed-blocking block 6 is welded to the front end of the seed cavity.

[0018] Reference Figure 3 As shown, the movable duckbill 1 can rotate around the pin 10 relative to the fixed duckbill 2 by a certain angle. A compression spring for resetting is provided between the hinge 3 and the seat plate of the fixed duckbill 2. This compression spring can restore the movable duckbill 1 to its initial position after the cavitation action.

[0019] The seeding process using the above-mentioned seed-fertilizer vertical application seeder with a double-cavity duckbill is as follows:

[0020] S1: When the seeds are sown, the fertilizer and seeds enter the fertilizer chamber 7 and the seed chamber 8 respectively. The fertilizer accumulates at the front end of the fertilizer chamber 7, while the seeds are blocked by the seed blocking block 6 and cannot reach the front end of the seed chamber 8.

[0021] S2: When the duckbill is inserted into the soil, the movable duckbill 1 opens slightly first, at which point the fertilizer falls first, while the seeds are blocked by the seed-blocking block 6 and cannot fall synchronously; as the movable duckbill 1 continues to open, the seeds will detach from the seed cavity 8 and fall into the soil. Due to the synergistic effect of the seed-blocking block 6 and the extension plate 5, the timing control of fertilizer placement before seed placement is achieved, and the vertical height of the fertilizer in the soil is lower than that of the seeds, forming a layered placement effect.

[0022] The above description only outlines the basic principles and preferred embodiments of this utility model. Those skilled in the art can make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of this utility model.

Claims

1. A double-cavity duckbill for vertical seed-fertilizer application, characterized in that: It includes a movable duckbill (1), a fixed duckbill (2), a hinge (3), a seed-fertilizer partition (4), an extension plate (5), a seed-blocking block (6), a fertilizer cavity (7), a seed cavity (8), a semi-circular head rivet (9), a pin (10), and a spring-loaded contact point (11); the fixed duckbill (2) and the movable duckbill (1) are hinged by the hinge (3), the semi-circular head rivet (9), and the pin (10); a spring for resetting is provided between the hinge (3) and the seat plate of the fixed duckbill (2); the seed-fertilizer partition (4) is welded to the inside of the fixed duckbill (2), and when the movable duckbill (1) and the fixed duckbill (2) are closed, a double cavity is formed: a fertilizer cavity (7) and a seed cavity (8); the front end of the fertilizer cavity (7) has an extension plate (5) that is longer than the seed cavity (8); the front end of the seed cavity (8) is welded with a seed-blocking block (6).

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