Intelligent gap type wheat precision seed metering device

Abstract

This utility model discloses an intelligent slotted precision wheat seed metering device, including a seed box and a seed metering device. The seed metering device is located below the seed box and is surrounded by a 3 / 4 seed protection plate. The seed protection plate and the seed box are welded and fixed. The inner wall of the seed protection plate is provided with a seed guide groove and a seed feeding plate. The seed metering device includes a seed metering tube and a hollow shaft. The outer end of the hollow shaft is connected to an air connector. The seed metering tube is a hollow stainless steel round tube with threads for fixing a differential fine-tuning mechanism. The seed metering tube is provided with multiple air inlets and conical discs. Each pair of conical discs at corresponding positions forms a group. The larger diameter of each group of conical discs is arranged opposite each other. Each group of conical discs is connected and positioned by a positioning ring. An adjusting spring is provided inside each group of conical discs. A support is provided inside the seed metering tube, and three sets of pressure sensors are provided on the support. This utility model, based on intelligent technology, develops an intelligent precision wheat seed metering device that can realize real-time monitoring and control of wheat seeding rate, and is worthy of promotion.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically relating to an intelligent slotted precision wheat seed metering device. Background Technology

[0002] Traditional high-yield wheat cultivation techniques employ large amounts of water, fertilizer, and seeding rates, leading to excessively large seedling populations, resulting in overcrowding, lodging, and small grains. This invention discloses an intelligent slotted precision wheat seed metering device that achieves intelligent precision sowing and fertilization. This technology saves seeds, ensures consistent plant spacing and sowing depth, guarantees uniform seed distribution, avoids seedling overcrowding, and creates ample growing space for wheat and other crops. Furthermore, the uniform distribution of wheat not only ensures sufficient growing space for each plant but also improves water and fertilizer utilization, promoting effective tillering. Based on intelligent technology, this invention develops an intelligent precision wheat seed metering device that enables real-time monitoring and control of wheat seeding rates, making it worthy of widespread application. Summary of the Invention

[0003] The purpose of this invention is to design an intelligent seed metering device for real-time monitoring and control of wheat seeding rate. The technical solution adopted is as follows: An intelligent slotted precision wheat seed metering device includes a seed box and a seed metering device. The seed metering device is located below the seed box and is surrounded by a 3 / 4 seed protection plate. The seed protection plate and the seed box are welded and fixed. The inner wall of the seed protection plate is provided with a seed guide groove and a seed feeding plate. The seed guide groove and the seed feeding plate are fixed to the inner wall of the seed protection plate by screws. The seed metering device includes a seed metering tube and a hollow shaft. The outer end of the hollow shaft is connected to an air connector. The seed metering tube is a hollow stainless steel round tube with threads for fixing a threaded differential fine-tuning mechanism. The seed metering tube is provided with multiple air inlets and conical discs. Every two corresponding conical discs at different positions form a group. The larger diameter of each group of conical discs is arranged opposite each other. Each group of conical discs is connected and positioned by a positioning ring. The left and right adjacent conical discs are provided with adjusting springs. A bracket is provided inside the seed metering tube, and three sets of pressure sensors are provided on the bracket.

[0004] Furthermore, one end of the seeding tube is connected to a hollow shaft via a seeding tube plug, and the other end is connected to a drive shaft assembly, which is driven to rotate by a servo motor.

[0005] Furthermore, the pressure sensors are evenly spaced along the circumferential and lateral directions, and the pressure sensors are connected to the control system.

[0006] Furthermore, the air connector is provided with an air outlet, and the air connector is connected to a vacuum pump.

[0007] Furthermore, the seed box is equipped with a stirring shaft, and the stirring shaft is evenly provided with a number of stirring blades.

[0008] Furthermore, a rolling bearing is fixed at the connection between the hollow shaft and the seed pipe plug.

[0009] Furthermore, the seed metering tube has threads on the side near the seed metering tube plug, and the seed metering tube plug is fixed to the seed metering tube by screws.

[0010] Furthermore, the air intakes are evenly distributed along the circumference of the seed metering pipe.

[0011] Furthermore, the threaded differential fine-tuning mechanism adopts an inner and outer double nut structure.

[0012] The above technical solution can achieve the following beneficial effects: (1) The thread differential fine adjustment mechanism and adjusting spring adopted in this utility model realize the precise fine adjustment of the position of the conical disk, thereby adjusting the adsorption gap according to the requirements of seed size, working environment, etc., and ensuring the accuracy of the gap size value under vibration and wear conditions; (2) A pressure sensor is installed inside the seed metering tube to detect the adsorption pressure in real time and adjust the negative pressure value in a timely manner through the control system to ensure that the seed adsorption force is constant, thereby ensuring the adsorption quantity of wheat seeds. (3) The entire seeding process is electrically driven to reduce interference from external vibrations, especially the effects of internal air pressure and seed adsorption force. Attached Figure Description

[0013] Figure 1 This is the front view of this utility model.

[0014] Figure 2 yes Figure 1 A magnified view of part of the middle section (I).

[0015] Figure 3 This is the left view of this utility model; Figure 4 yes Figure 3 Enlarged view of part of section II; Figure 5 This is a structural diagram of the conical disk of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-5As shown, an intelligent slotted precision wheat seed metering device includes a seed box 12 and a seed metering device. The seed metering device is located below the seed box 12 and its outer periphery is covered by a 3 / 4 seed protection plate 1. The seed protection plate 1 and the seed box 12 are welded and fixed. The inner wall of the seed protection plate 1 is provided with a seed guide groove 21 and a seed feeding plate 22. The seed guide groove 21 and the seed feeding plate 22 are fixed to the inner wall of the seed protection plate 1 by screws. The seed feeding plate 22 scrapes the seeds adsorbed on the slots and puts them into the seed guide groove 21, where they slide down with the seeds. The seed metering device includes a seed metering tube 2 and a hollow shaft 7. The outer end of the spindle 7 is connected to the air connector 6. The seeding tube 2 is a hollow stainless steel round tube with threads for fixing the differential fine adjustment mechanism 10. The seeding tube 2 is provided with multiple air inlets 18 and conical discs 13. Each pair of conical discs 13 at corresponding positions forms a group. The larger diameter of each group of conical discs 13 is set opposite to each other. Each group of conical discs 13 is connected and positioned by a positioning ring 19. An adjusting spring 14 is provided inside each group of conical discs 13. A bracket 4 is provided inside the seeding tube 2, and three pressure sensors 9 are provided on the bracket 4.

[0017] As a preferred embodiment, one end of the seeding tube 2 is connected to the hollow shaft 7 via the seeding tube plug 8, and the other end is connected to the drive shaft assembly 17, which is driven to rotate by a servo motor.

[0018] As a preferred embodiment, the pressure sensors 9 are evenly arranged at circumferential and lateral distances, and the pressure sensors 9 are connected to the control system.

[0019] As a preferred embodiment, the air connector 6 is provided with an air outlet 20, and the air connector 6 is connected to a vacuum pump.

[0020] As a preferred embodiment, the seed box 12 is provided with a stirring shaft 11, and the stirring shaft 11 is uniformly provided with a plurality of stirring blades.

[0021] As a preferred embodiment, a rolling bearing 5 is fixed at the connection between the hollow shaft 7 and the seeding pipe plug 8.

[0022] As a preferred embodiment, the seeding tube 2 is threaded on the side near the seeding tube plug 8, and the seeding tube plug 8 is fixed to the seeding tube 2 by screws 3.

[0023] As a preferred embodiment, the air intake 18 is evenly distributed around the circumference of the seeding pipe 2.

[0024] As a preferred embodiment, the threaded differential fine-tuning mechanism 10 adopts an inner and outer double nut structure with different thread pitches. The inner nut is connected to the thread on the seeding tube 2. By rotating the outer nut, the inner nut can be moved laterally in a small amount.

[0025] The intelligent slotted wheat precision seed metering device disclosed in this utility model adjusts the negative pressure value in a timely manner through a control system connected to a pressure sensor, monitors in real time, and performs precision seeding.

[0026] During operation, when the seed metering tube 2 rotates to the lower position, the seeds adsorbed above it are scraped off the gaps by the seed feeding plate 22 and enter the seed guide groove 21 to facilitate the downward movement of the seeds.

[0027] like Figure 1 As shown, two conical discs are joined together to form five pairs of conical discs, which are sequentially mounted on the seeding tube 2. This invention utilizes a threaded differential fine-tuning mechanism 10 and an adjusting spring 14 to adjust the gap δ between two adjacent left and rear conical discs 13. Specifically, rotating the nut clockwise tightens the right conical disc 13, compressing the springs within the two conical discs 13 through force transmission, thus reducing the gap δ. Conversely, rotating the nut counterclockwise releases the pressure on the right conical disc 13, causing the two adjacent conical discs 13 to separate under the spring force, increasing the gap δ. The threaded differential fine-tuning mechanism 10 uses inner and outer nuts with different pitches. The inner nut is threaded onto the seeding tube 2, and rotating the outer nut allows for slight lateral movement of the inner nut. The vacuum pump rotates, drawing gas out of the seed metering tube 2 through the air outlet 20 at the air connector 6, creating a negative pressure. Under this negative pressure, wheat seeds are adsorbed into the gaps of the conical disc 13, achieving single-seed adsorption through the action of the conical surface. Three sets of pressure sensors 9 are evenly arranged circumferentially and laterally inside the seed metering tube 2. These sensors monitor the internal pressure of the tube. When the pressure is lower than a set value, the pressure sensor's measurement and control system feeds the value back to the central processing unit, driving the vacuum pump to increase its operation; conversely, it decreases its operation, thus achieving precise wheat seed dispensing.

[0028] The seed box 12 is equipped with a stirring shaft 11, which allows the seeds to fall freely. When working, the drive shaft assembly 17 drives the seed metering tube 2 and the conical disc 13 to rotate together. The drive shaft assembly 17 is driven to rotate by a servo motor. The rotation speed of the servo motor can be adjusted in time according to the seed metering volume to achieve precision sowing.

[0029] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. An intelligent slotted precision wheat seed metering device, comprising a seed box (12) and a seed metering device, characterized in that: The seed metering device is located below the seed box (12), and its outer periphery is wrapped with a 3 / 4 seed protection plate (1). The seed protection plate (1) and the seed box (12) are welded and fixed. The inner wall of the seed protection plate (1) is provided with a seed guide groove (21) and a seed feeding plate (22). The seed metering device includes a seed metering tube (2) and a hollow shaft (7). The outer end of the hollow shaft (7) is connected to an air connector (6). The seed metering tube (2) is a hollow stainless steel round tube with threads for fixing the thread differential fine adjustment mechanism. (10) The seeding pipe (2) is provided with multiple air inlets (18) and conical discs (13). Each pair of conical discs (13) at corresponding positions is a group. The large diameter of each group of conical discs (13) is set opposite to each other. Each group of conical discs (13) is connected and positioned by a positioning ring (19). An adjusting spring (14) is provided inside two adjacent conical discs (13). A bracket (4) is provided inside the seeding pipe (2). Three pressure sensors (9) are provided on the bracket (4).

2. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: One end of the seeding tube (2) is connected to the hollow shaft (7) through the seeding tube plug (8), and the other end is connected to the drive shaft assembly (17), which is driven to rotate by a servo motor.

3. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The pressure sensors (9) are evenly arranged at circumferential and lateral distances, and the pressure sensors (9) are connected to the control system.

4. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The air connector (6) is provided with an air outlet (20), and the air connector (6) is connected to a vacuum pump.

5. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The seed box (12) is equipped with a stirring shaft (11), and a number of stirring blades are evenly arranged on the stirring shaft (11).

6. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: A rolling bearing (5) is fixed at the connection between the hollow shaft (7) and the seed pipe plug (8).

7. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The seeding tube (2) has a thread on the side near the seeding tube plug (8), and the seeding tube plug (8) is fixed to the seeding tube (2) by a screw (3).

8. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The air inlets (18) are evenly distributed around the circumference of the seeding pipe (2).

9. The intelligent slotted precision wheat seed metering device according to claim 1, characterized in that: The thread differential fine-tuning mechanism (10) adopts an inner and outer double nut structure.

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