Peanut precision seeding air suction type seed metering device suitable for saline-alkali soil

Abstract

The present application relates to agricultural machinery, especially a peanut precision planting air suction type seed metering device suitable for saline-alkali soil, comprising a shell, a seed metering disc with a plurality of seed metering concave disc holes arranged at intervals along the circumferential direction, one end of the seed metering concave disc hole being in a concave type, and a concave rubber sleeve being fixedly arranged in the seed metering concave disc hole, a plurality of seed metering mechanisms arranged at intervals along the annular outer circumferential surface of the shell, comprising a pointed nozzle plate, a pointed nozzle seed chamber and a baffle, the pointed nozzle seed chamber being fixedly connected with the shell, the pointed nozzle plate and the baffle being fixedly connected and rotatably connected with the shell through a rotating shaft, and the rotating shaft being connected with the shell through a spring. The seed holes can be fully contacted, the stability of the seed carrying stage can be greatly improved, the seed damage rate in the operation process can be reduced, and the seeding efficiency is improved.

Description

Technical Field

[0001] This invention relates to agricultural machinery, and in particular to a peanut precision seeding air-suction metering device suitable for saline-alkali land. Background Technology

[0002] Currently, peanut seed metering devices on the Chinese market are mainly divided into two types: mechanical seed metering devices and pneumatic seed metering devices. Mechanical seed metering devices have the advantages of simple structure and low cost, but existing mechanical internal filling vertical disc seed metering devices have technical problems such as high requirements for seed shape and size, inability to adapt to high-speed operation, difficulty in achieving precision sowing, and high seed damage rate during operation.

[0003] The air-suction seed metering device applies negative pressure to the seed suction holes on the seed metering disc through the air suction chamber, adsorbing the seeds onto the disc. When the disc rotates to a specific area, the negative pressure disappears, thus achieving seed metering. During operation, the air-suction seed metering device has a low seed damage rate and is not demanding on seed size. However, in field operations, especially in saline-alkali soils, the poor soil structure, poor tillage, insufficient hole contact, and mechanical vibration causing seeds to fall off can lead to missed sowing. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects in the existing technology and to propose a peanut precision sowing air suction seed metering device suitable for saline-alkali land. It can ensure sufficient contact of the seed holes, greatly improve the stability of the seed carrying stage, reduce the seed damage rate during operation, and improve sowing efficiency.

[0005] The technical solution of this invention is: a peanut precision seeding air-suction metering device suitable for saline-alkali land, comprising a shell, and further comprising:

[0006] The seed metering disc has several seed metering concave disc holes spaced apart along its circumference. One end of each seed metering concave disc hole is concave, and a concave rubber sleeve is fixed inside the seed metering concave disc hole.

[0007] Several seeding mechanisms are spaced apart along the annular outer circumference of the shell, including a pointed plate, a pointed seed chamber, and a baffle. The pointed seed chamber is fixedly connected to the shell. The pointed plate and the baffle are fixedly connected and rotatably connected to the shell through a rotating shaft. A spring connects the rotating shaft to the shell.

[0008] In this invention, the concave rubber sleeve includes a circular ring and an inverted conical opening, and the circular ring and the inverted conical opening are fixedly connected by a connecting ring;

[0009] When the concave rubber sleeve is placed inside the seed metering concave disc hole, the inner wall of the seed metering concave disc hole is locked against the outer side of the connecting ring, and the concave port of the seed metering concave disc hole fits against the outer surface of the inverted conical opening.

[0010] The seeding concave disc hole and the concave rubber sleeve are interference-fitted.

[0011] It also includes a vacuum chamber, which is fixedly connected to the seed metering tray.

[0012] The vacuum chamber is equipped with a vacuum partition, which is attached to the side of the seed metering tray, and the seed metering tray and the vacuum partition rotate relative to each other.

[0013] When the pointed plate and the pointed seed chamber are fitted together, they form a closed seed cavity.

[0014] When the baffle comes into contact with the ground, the resistance force of the ground on the baffle causes the baffle to rotate. At this time, the pointed plate rotates to fit with the pointed seed chamber, and the seed is located in the seed chamber.

[0015] When the baffle is not in contact with the ground, it automatically rotates and resets under the elastic force of the spring, and the pointed plate rotates to leave the pointed seed chamber, from which the seeds fall.

[0016] The beneficial effects of this invention are:

[0017] (1) The concave holes of the seed metering disc can further increase the adsorption force of the seed metering disc on the seeds, greatly improve the stability of the seed carrying stage, and improve the working stability of the seed metering device.

[0018] (2) The concave rubber sleeve air suction sowing method can further reduce the seed damage rate during operation. In combination with the concave hole of the seed metering plate, it can increase the contact area of ​​the seeds and make the seed holes fully contact, which greatly improves the stability of the seed carrying stage and avoids the seed falling off due to mechanical vibration and other factors during field operation, thus causing missed sowing, thereby improving the work quality and sowing accuracy.

[0019] (3) The pointed seed outlet avoids manual film breaking and reduces labor costs; at the same time, it can increase its soil breaking effect, making it more suitable for operation in saline-alkali land and improving the accuracy of sowing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first overall assembly structure of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the second overall assembly structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the seed metering disc structure;

[0024] Figure 5 This is a schematic diagram of the concave rubber ferrule.

[0025] In the diagram: 1. Shell, 2. Fan pipe, 3. Vacuum chamber, 4. Seed tray, 5. Seed tray with concave holes, 6. Concave rubber sleeve, 7. Circular ring, 8. Inverted conical opening, 9. Connecting ring, 10. Vacuum partition, 11. Seed stirring tray, 12. Nozzle plate, 13. Nozzle seed chamber, 14. Baffle. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the peanut precision seeding air-suction type seed metering device suitable for saline-alkali land according to the present invention includes a shell 1, a fan pipe 2, a vacuum chamber 3, a seed metering disc 4, and a seed metering mechanism. The shell 1 is cylindrical, and a cylindrical cavity is set inside the shell. The vacuum chamber 3 and the seed metering disc 4 are set inside the cavity. Several seed metering mechanisms are arranged at intervals along the annular outer circumference of the shell.

[0029] The blower pipe 2 is located at the center of the casing. One end of the blower pipe 2 is connected to the vacuum chamber 3 inside the casing, and the other end of the blower pipe 2 is connected to the vacuum pump. After the vacuum pump draws a vacuum, the negative pressure generated in the vacuum chamber 3 causes the peanut seeds to be adsorbed onto the seed metering tray 4.

[0030] A seed metering disc 4 is fixed to one side of the vacuum chamber 3. In this embodiment, the inner side of the seed metering disc 4 is fixedly connected to the vacuum chamber 3 by several bolts. Several seed metering concave holes 5 are spaced apart on the annular outer side of the seed metering disc 4, such as... Figure 4 As shown, one end of the seeding concave plate hole 5 is concave.

[0031] A concave rubber sleeve is fixed inside the concave hole of the seed metering disc. For example... Figure 5 As shown, the concave rubber sleeve 6 includes a circular ring 7 and an inverted conical opening 8, which are fixedly connected by a connecting ring 9. When the concave rubber sleeve 6 is placed inside the seed metering concave disc hole, the inner wall of the seed metering concave disc hole is precisely engaged with the outer side of the connecting ring 9, and the concave end of the seed metering concave disc hole fits against the outer surface of the inverted conical opening. The seed metering concave disc hole 5 and the concave rubber sleeve 6 have an interference fit.

[0032] A concave rubber sleeve is embedded in the seed metering disc and rotates with it. The fit between the concave holes of the seed metering disc and the concave rubber sleeve increases the contact area with the seeds, thereby improving the seed metering disc's adhesion to the seeds, further reducing seed damage during operation, and increasing sowing efficiency.

[0033] A seed inlet box is located on the outer side of the seed metering tray, through which peanut seeds enter the seed metering tray. A vacuum baffle 10 is located inside the vacuum chamber and close to the side wall of the seed metering tray. When the seed metering concave hole on the seed metering tray rotates to the vacuum baffle, the vacuum baffle acts as a barrier between the seed metering concave hole and the vacuum chamber. At this time, the negative pressure acting on the peanut seeds inside the seed metering concave hole disappears, and the peanut seeds fall out of the seed metering concave hole. A seed stirring plate 11 is located on the outer side of the seed metering tray, with a seed dropping hole on the stirring plate 11. After falling off the seed metering tray, the peanut seeds fall directly onto the stirring plate 11 and then directly into the seed metering mechanism on the side wall of the shell through the seed dropping hole.

[0034] The seed metering mechanism includes a pointed plate 12, a pointed seed chamber 13, and a baffle 14. The pointed plate 12 and the pointed seed chamber 13 can form a closed seed cavity. After the peanut seeds pass through the seed dropping hole on the seed stirring plate, they fall directly into the seed cavity under the action of gravity.

[0035] One end of the pointed seed chamber 13 is fixedly connected to the shell, while the other end is pointed. One end of the pointed plate 12 is rotatably connected to the shell, and the other end is also pointed. When the pointed plate 12 rotates to fit against the side wall of the pointed seed chamber 13, a closed seed cavity is formed. By setting the pointed plate and pointed seed chamber, manual film breaking is avoided, reducing labor costs. It also increases soil breaking effect, making it more suitable for operations in saline-alkali land and improving sowing accuracy.

[0036] One end of the baffle 14 is rotatably connected to the housing 1 and fixedly connected to the nozzle plate 12. In this embodiment, the baffle and the nozzle plate are fixed on the same rotating shaft, the rotating shaft is rotatably connected to the housing, and a spring is connected between the rotating shaft and the housing.

[0037] As the shell rotates, when the seed metering mechanism comes into contact with the ridge surface, the baffle 14 first contacts the ridge surface. Under the obstruction of the ridge surface, the baffle 14 rotates, and at the same time, it drives the nozzle plate 12 to rotate, so that the nozzle plate 12 fits against the end face of the nozzle seed chamber 13, forming a closed seed cavity, in which the peanut seed is located. As the shell continues to rotate, the nozzle plate 12 and the nozzle part of the nozzle seed chamber 13 come into contact with the ridge surface, which plays the role of breaking the film and breaking the soil.

[0038] When the shell rotates until the baffle 14 is no longer in contact with the ridge surface, the blocking force acting on the baffle 14 disappears, and the baffle automatically rotates and resets under the elastic force of the spring. During the rotation of the baffle, the pointed plate 12 connected to it rotates, at which point the pointed plate 12 leaves the pointed seed chamber 13, and the peanut seeds in the seed chamber fall from the pointed seed chamber, thus realizing the sowing process.

[0039] The working process of the seed metering device is as follows: During operation, the roller device rotates in contact with the soil, driven by a tractor. Its vacuum chamber, seed metering disc, and seed stirring disc rotate together. Peanut seeds enter the seed filling area of ​​the seed metering device through the seed inlet box. The seed stirring disc agitates the seeds in the filling area. Under the suction force generated by the vacuum negative pressure in the vacuum chamber, the peanuts are adsorbed onto the seed metering disc's concave holes. As the seed metering disc rotates, when the seed metering disc's concave holes rotate to the vacuum partition, the suction force acting on the peanut seeds disappears. Under their own gravity, the peanut seeds fall through the seed dropping holes on the seed stirring disc into the seed metering mechanism below.

[0040] At this point, the baffle inside the seed metering mechanism rotates due to the obstruction of the ridge surface, simultaneously causing the nozzle plate to rotate until it is in contact with the nozzle seed chamber. The peanut seeds then fall into the nozzle seed chamber but cannot fall into the soil, while the nozzle inserts into the soil. When the baffle detaches from the ridge surface, the force exerted by the ridge on the baffle disappears. The baffle then automatically rotates and resets under the action of a spring, simultaneously causing the nozzle plate to rotate and move away from the nozzle seed chamber. At this point, the peanut seeds can fall from the nozzle seed chamber and into the soil, thus completing the peanut seeding process.

[0041] The above provides a detailed description of the peanut precision seeding air-suction metering device suitable for saline-alkali land provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A peanut precision seeding air-suction metering device suitable for saline-alkali land, comprising a shell, characterized in that, Also includes: The seed metering disc has several seed metering concave disc holes spaced apart along its circumference. One end of each seed metering concave disc hole is concave, and a concave rubber sleeve is fixed inside the seed metering concave disc hole. Several seeding mechanisms are spaced apart along the annular outer circumference of the shell, including a pointed plate, a pointed seed chamber and a baffle. The pointed seed chamber is fixedly connected to the shell. The pointed plate and the baffle are fixedly connected and rotatably connected to the shell through a rotating shaft. A spring connects the rotating shaft and the shell. When the pointed tip plate and the pointed tip seed chamber are fitted together, they form a closed seed cavity; When the baffle comes into contact with the ground, the resistance force of the ground on the baffle causes the baffle to rotate. At this time, the pointed plate rotates to fit with the pointed seed chamber, and the seed is located in the seed chamber. The pointed part of the pointed plate and the pointed seed chamber comes into contact with the ridge surface, which plays the role of breaking the film and breaking the soil. When the baffle is not in contact with the ground, the baffle automatically rotates and resets under the elastic force of the spring, and the pointed plate rotates to leave the pointed seed chamber, and the seeds fall from the pointed seed chamber; The concave rubber ferrule includes a circular ring and an inverted conical opening, which are fixedly connected by a connecting ring; When the concave rubber sleeve is placed in the seed metering concave disc hole, the inner wall of the seed metering concave disc hole is locked on the outer side of the connecting ring, and the concave port of the seed metering concave disc hole fits against the outer surface of the inverted conical opening. The seeding concave disc hole and the concave rubber sleeve are interference-fitted.

2. The peanut precision seeding air-suction metering device suitable for saline-alkali land according to claim 1, characterized in that, It also includes a vacuum chamber, which is fixedly connected to the seed metering tray.

3. The peanut precision seeding air-suction metering device suitable for saline-alkali land according to claim 2, characterized in that, The vacuum chamber is equipped with a vacuum partition, which is attached to the side of the seed metering tray, and the seed metering tray and the vacuum partition rotate relative to each other.

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