Air pressure type precise seed sowing device for Hami melon seeds

Abstract

The utility model relates to an air pressure type precise seed sowing device for Hami melon seeds. Comprising a shell, a seed-metering disc, a partition plate, a seed guide pipe, a seed-metering air pipe, an air blocking wheel and a seed scraping knife. The shell comprises a front shell and a rear shell, a seed inlet and an air inlet pipe are arranged on the front shell, and an air outlet is formed in the rear shell; the seed-metering disc is rotatably mounted in the seed-metering cavity, and the front cavity is divided into a seed filling area, a seed cleaning area, a seed carrying area and a seed throwing area; seed guide grooves are formed in the side surface, close to the front chamber, of the seed-metering plate at intervals in the circumferential direction; the seed scraping knife is fixedly mounted in the seed cleaning area; the partition plate is vertically mounted in the seed feeding area; the upper end of the seed guide pipe is inserted into the seed feeding area; one end of the seed-metering air pipe is inserted into the upper end of the seed guide pipe; and the choke wheel is rotationally mounted in the rear chamber. According to the Hami melon seed dibbler, seeds can be discharged separately at intervals, the purpose of mechanical dibbling is achieved in cooperation with agricultural mechanical equipment, the labor intensity of workers and the labor cost needed for dibbling the Hami melon seeds are effectively reduced, and the seed dibbling efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of seed metering devices, and particularly to a pneumatic precision seed metering device for Hami melon seeds. Background Art

[0002] Hami melon seeds are lanceolate or oval, with a pointed tip, a blunt base, a smooth surface, and are generally yellowish-white or dirty white. The agronomic requirements for planting are a plant spacing of 45 - 50 cm, a row spacing of 200 - 250 cm, a sowing depth of 2 - 3 cm, and a soil covering thickness of 3 - 4 cm.

[0003] In the planting methods of Hami melons, there are mainly two major methods: direct seeding and transplanting. Traditional direct seeding of Hami melons is manual dibbling, which has a high labor intensity for workers, a high labor cost, and cannot guarantee the operation efficiency. Summary of the Invention

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a pneumatic precision seed metering device for Hami melon seeds, aiming to reduce the planting cost of manual dibbling and improve the dibbling efficiency at the same time.

[0005] A pneumatic precision seed metering device for Hami melon seeds includes a housing, the housing includes a front housing and a rear housing, the front housing and the rear housing enclose a seed metering cavity, the front housing is provided with a seed inlet and an air inlet pipe, and the rear housing is provided with an air outlet hole;

[0006] A seed metering disc, the seed metering disc is rotatably installed in the seed metering cavity and divides the seed metering cavity into a front chamber and a rear chamber. The front chamber is divided into a seed filling area, a seed cleaning area, a seed carrying area, and a seed dropping area; guide seed grooves are arranged at intervals along the circumferential direction on the side of the seed metering disc adjacent to the front chamber, and the guide seed grooves are trapezoidal with a larger outer side and a smaller inner side; through holes communicating with the rear chamber are provided at the bottom of the guide seed grooves;

[0007] A seed scraping knife, the seed scraping knife is fixedly installed in the seed cleaning area;

[0008] A partition plate, the partition plate is vertically installed in the seed dropping area;

[0009] A seed guiding pipe, the upper end of the seed guiding pipe is inserted into the seed dropping area, the lower end of the seed guiding pipe extends downward, and the lower end portion thereof is arranged in an arc shape;

[0010] A seed metering air pipe, one end of the seed metering air pipe is inserted into the upper end of the seed guiding pipe;

[0011] An air blocking wheel, the air blocking wheel is rotatably installed in the rear chamber and corresponds to the position of the seed dropping area, and the outer circumferential surface of the air blocking wheel is attached to the back surface of the seed metering disc.

[0012] In some solutions, stirring teeth extending radially are provided on the front side of the seed metering disc, and the stirring teeth are arranged at intervals along the circumferential direction of the seed metering disc.

[0013] In some solutions, top seed rods matching the through holes are arranged at intervals on the air blocking wheel, and the arc length between two adjacent top seed rods is equal to the arc length between the two through holes.

[0014] The technical solutions provided by this application may include the following beneficial effects:

[0015] Through this application, it is possible to achieve the single - seed discharging at intervals, cooperate with agricultural machinery and equipment to achieve the purpose of mechanical dibbling, effectively reduce the labor intensity of workers and the labor cost required for dibbling cantaloupe seeds, and improve the efficiency of dibbling seeds.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By describing the exemplary embodiments of this application in more detail in conjunction with the drawings, the above - mentioned and other objects, features, and advantages of this application will become more obvious. Among them, in the exemplary embodiments of this application, the same reference numerals generally represent the same components.

[0018] Figure 1 is a schematic structural diagram of the seed metering device shown in the embodiment of this application;

[0019] Figure 2 is Figure 1 an exploded view of;

[0020] Figure 3 is a schematic installation diagram of the seed metering disc of the seed metering device shown in the embodiment of this application;

[0021] Figure 4 is a schematic installation diagram of the partition plate of the seed metering device shown in the embodiment of this application;

[0022] Figure 5 is another schematic structural diagram of the air blocking wheel of the seed metering device shown in the embodiment of this application;

[0023] Figure 6 is another schematic installation structure diagram of the stirring teeth of the seed metering device shown in the embodiment of this application;

[0024] Reference Numerals:

[0025] 1. Outer shell; 111. Front chamber; A. Seed filling area; B. Seed cleaning area; C. Seed carrying area; D. Seed dropping area; 112. Rear chamber; 12. Seed inlet; 13. Air inlet pipe; 14. Air outlet hole; 2. Seed metering disc; 21. Seed guiding groove; 22. Through hole; 3. Partition plate; 4. Seed guiding pipe; 5. Seed metering air pipe; 6. Air blocking wheel; 61. Seed pushing rod; 7. Seed scraping knife; 8. Seed stirring teeth Detailed implementation manners

[0026] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application will be more thorough and complete, and can fully convey the scope of the present application to those skilled in the art.

[0027] Please refer to Figures 1-4 , the present application provides a pneumatic precision seed metering device for Hami melon seeds. When in use, it is installed on agricultural machinery, and the agricultural machinery provides rotational power, high-pressure air, etc. It is mainly used to discharge seeds at uniform intervals, cooperate with the movement of the agricultural machinery to achieve precise seeding, thereby reducing the labor intensity of the staff and the cost required for seeding Hami melon seeds, and improving the efficiency of seeding seeds. It includes an outer shell 1, a seed metering disc 2, a partition plate 3, a seed guiding pipe 4, a seed metering air pipe 5, an air blocking wheel 6, and a seed scraping knife 7.

[0028] The outer shell 1 includes a front shell and a rear shell. The front shell and the rear shell enclose a seed metering cavity. The front shell is provided with a seed inlet 12 and an air inlet pipe 13, and the rear shell is provided with an air outlet hole 14; the air inlet pipe 13 is connected to a blower on the agricultural machinery, and then air is blown into the seed metering cavity to form a positive pressure in the seed metering cavity. The seed inlet 12 is used to introduce seeds into the seed metering cavity, which can be poured manually or through a corresponding mechanism on the agricultural machinery.

[0029] The seed metering disc 2 is rotatably installed in the seed metering cavity, connected to a rotating component on the agricultural machinery, or externally connected to a motor, so as to realize the rotation of the seed metering disc 2. The seed metering disc 2 divides the seed metering cavity into a front chamber 111 and a rear chamber 112; the front chamber 111 is divided into a seed filling area A, a seed cleaning area B, a seed carrying area C, and a seed dropping area D.

[0030] The seed metering disc 2 is provided with seed guiding grooves 21 at intervals along the circumferential direction of the side surface of the front chamber 111. The seed guiding grooves 21 are trapezoidal with a larger outer side and a smaller inner side, which increases the friction between the seeds and the seed guiding grooves 21 under the action of positive pressure air flow, reduces the interference of the population on the target seeds, improves the seed filling performance, and at the same time standardizes the seed filling posture; a through hole 22 communicating with the rear chamber 112 is provided at the bottom of the seed guiding groove 21. Since the front chamber 111 is communicated with the air inlet pipe 13, the front chamber 111 is under positive pressure; in order to prevent air from flowing out of the seed inlet 12 in large quantities, after the seeds are poured into the seed inlet 12, a lid can be used to cover the free end of the seed inlet 12 to form a seal. At the same time, the seed inlet 12 is inclined upward, which can effectively prevent the seeds from falling out of the seed inlet 12 due to jolting during use.

[0031] The seed scraping knife 7 is fixedly installed in the seed cleaning area B. The seed scraping knife 7 is serrated and is used to scrape off the excess seeds that do not have an advantage in pressure to ensure single-grain property.

[0032] The partition plate 3 is vertically installed in the seed throwing area D to isolate the seed throwing area D from other areas, realizing that the air pressures for seed filling and seed dropping can be adjusted out of sync; the upper end of the seed guiding pipe 4 is inserted into the seed throwing area D, and the lower end of the seed guiding pipe 4 extends downward, and the lower end part thereof is arranged in an arc shape; during use, the bending direction of the seed guiding pipe 4 is opposite to the traveling direction of the agricultural machinery. When the lower end of the seed guiding pipe 4 contacts the land, its bent lower end can effectively prevent soil from entering the seed guiding pipe 4 and adhering to its inner wall, thus causing the technical problem that the seeds cannot be discharged smoothly; at the same time, positive pressure is separately introduced into the seed guiding pipe 4, and under the action of high-speed air flow, the seeds are given corresponding initial velocities, reducing collision displacement and bouncing displacement, and achieving jet seeding with uniform plant spacing.

[0033] The air blocking wheel 6 is rotatably installed in the rear chamber 112 and corresponds to the position of the seed throwing area D. The outer circumferential surface of the air blocking wheel 6 is attached to the back surface of the seed metering disc 2. When the exhaust disc rotates, it drives the air blocking wheel 6 to rotate along the tangent direction of the seed metering disc 2.

[0034] In the working process of this application, the cantaloupe seeds are introduced into the seed filling area A from the seed inlet 12, and external air is introduced into the front chamber 111 from the air inlet pipe 13, so that the front chamber 111 forms positive pressure. As the seed metering disc 2 rotates counterclockwise, the seeds are transported from the seed filling area A to the seed cleaning area B, and in the seed cleaning area B, the excess seeds are removed; as the seed metering disc 2 continues to rotate, the seeds enter the seed throwing area D after passing through the seed carrying area C; in the seed throwing area D, the through hole 22 is blocked by the air blocking wheel 6, and the positive pressure received by the seeds disappears, so that the seeds freely fall into the seed guiding pipe 4 and are finally led out by the seed guiding pipe 4.

[0035] In some specific embodiments, stirring teeth 8 extending radially are provided on the front side of the seed metering disc 2. The stirring teeth 8 are arranged at intervals in the circumferential direction of the seed metering disc 2. The arrangement of the stirring teeth 8 can stir up the seeds deposited at the bottom of the seed metering area, effectively ensuring that the seeds in the seed metering area can be completely discharged.

[0036] In this specific embodiment, preferably, as Figure 6 shown, the stirring teeth 8 extend from the center of the seed metering disc 2 to its edge. In order to prevent the stirring teeth 8 from interfering with the seed guiding tube 4 and the partition plate 3, the stirring teeth 8 are hinged to the middle part of the seed metering disc 2. A groove matching the stirring teeth 8 is provided on the seed metering disc 2, and a spring is arranged between the bottom of the groove and the bottom of the stirring teeth 8. In this way, when the stirring teeth 8 rotate to the position of the partition plate 3, they are pressed into the seed metering disc 2, thus solving the technical problem of preventing the stirring teeth 8 from interfering with the seed guiding tube 4 or the partition plate 3. It can be conceived that a corresponding inclined opening is provided on the upper side of the partition plate 3 to facilitate the pressing of the stirring teeth 8 into the seed metering disc 2.

[0037] In some specific embodiments, as Figure 5 shown, top seed rods 61 matching the through holes 22 are arranged at intervals on the air blocking wheel 6. The arc length between two adjacent top seed rods 61 is equal to the arc length between the two through holes 22. While the air blocking wheel 6 blocks the through holes 22, the top seed rods 61 extend into the through holes 22 and push the seeds away from the seed guiding groove 21, ensuring the smooth progress of the seed metering process.

[0038] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technologies in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments.

Claims

1. A pneumatic Hami melon seed precision metering device, characterized in that: include The housing comprises a front housing and a rear housing, the front housing and the rear housing enclose a seeding cavity, the front housing is provided with a seed inlet and an air inlet pipe, and the rear housing is provided with an air outlet; A seeding disc, the seeding disc is rotatably installed in the seeding cavity, and the seeding cavity is divided into a front cavity and a rear cavity, the front cavity is divided into a seed filling area, a seed cleaning area, a seed carrying area, and a seed throwing area; the seeding disc is close to the side of the front cavity and is provided with seed guide grooves at intervals around the circumference thereof, the seed guide grooves are trapezoidal in shape with a larger outer side and a smaller inner side; the bottom of the seed guide groove is provided with a through hole connected to the rear cavity; A seed scraper, the seed scraper is fixedly installed in the seed cleaning area; A partition plate, the partition plate is vertically installed in the seeding area; A seed guide tube, the upper end of which is inserted into the seeding area, the lower end of which is extended downward and is arranged to be arc-shaped; A seed discharging air pipe, one end of which is inserted into the upper end of the seed guide pipe; The air-blocking wheel is rotatably mounted in the rear chamber and corresponds to the position of the seeding area. The outer circumferential surface of the air-blocking wheel is in contact with the back surface of the seeding disk.

2. The pneumatic Hami melon seed precision metering device according to claim 1, characterized in that: The front side surface of the seeding disc is provided with seed stirring teeth extending in the radial direction thereof, and the seed stirring teeth are arranged at intervals in the circumferential direction of the seeding disc.

3. The pneumatic Hami melon seed precision metering device according to claim 1, characterized in that: The air blocking wheel is provided with push rods matching the through holes at intervals, and the arc length between two adjacent push rods is equal to the arc length between the two through holes.

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