Air suction dibbler
By designing an air-suction seeder that combines a fixed plate, a pressure plate, and an air suction plate, and utilizing negative pressure adsorption and a moving nozzle with a fixed blade to assist in sowing, the problem of seed surface damage is solved, thereby improving seed survival rate and sowing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-13
AI Technical Summary
Existing air-suction seeders are prone to damaging the seed surface during the sowing process, resulting in a low survival rate.
A pneumatic seeding device was designed, comprising a fixed plate, a pressure plate, an air suction plate, and a seeder. It protects the seeds through negative pressure adsorption and combines a moving nozzle and a fixed blade to assist in sowing, reducing the frequency of seed rotation and the occurrence of scalding or burning of seedlings.
It effectively protects the seed coat, improves seed survival rate, reduces seedling scalding and burning, and increases sowing efficiency.
Smart Images

Figure CN223987414U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of planting equipment technology, specifically relating to an air-suction seeding device. Background Technology
[0002] Currently, air-suction seeders are widely used due to their high efficiency and precision. The air-suction seed metering device is a key component of the air-suction seeder. Existing air-suction seed metering devices typically include an air-suction chamber and a seed metering disc. The seed metering disc has seed metering holes and is located on the side of the air-suction chamber where negative pressure is created. When negative pressure is generated in the air-suction chamber, the seeds are adsorbed onto the seed metering holes. The seed metering disc rotates, and when it reaches a predetermined position, the negative pressure in the air-suction chamber disappears, the adsorption force of the seed metering disc on the seeds disappears, and the seeds fall under the action of gravity, ready for sowing.
[0003] Existing air-suction seeders mostly achieve overall seeding by rotating an internal moving disc and an external fixed disc. However, during the downward rotation of the seeds, the seed coat on the seed surface is easily damaged, which cannot guarantee the overall survival rate of the seeds. Therefore, an air-suction seeder is needed to help solve this problem. Utility Model Content
[0004] (1) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an air-suction seeder that can keep seeds in a relatively stable environment during operation, effectively preventing seed rotation and thus protecting the seed coat. The seed is moved and dropped into the sowing area through negative pressure adsorption.
[0006] (2) Technical solution
[0007] To solve the above-mentioned technical problems, this utility model provides an air-suction seeder, which includes a pressure plate, a fixed plate rotatably embedded in the center of the pressure plate, a receiving cavity inside the fixed plate, an arc-shaped baffle plate fixed in the receiving cavity, a bell inlet on one side of the fixed plate, the bell inlet communicating with a guide box, an air suction plate embedded in the side of the fixed plate away from the bell inlet, the air suction plate communicating with an air suction pump, a seed suction port on the side of the air suction plate communicating with the receiving cavity, a bell discharge port at the bottom of the fixed plate, a seed outlet on the outer side of the pressure plate, and a seeder for auxiliary sowing installed at the seed outlet.
[0008] Furthermore, a baffle assembly is installed on the side of the fixed plate away from the suction plate, and a communication port is opened near the bottom of the baffle plate. The baffle assembly is located above the bell opening.
[0009] Furthermore, the material stop assembly includes a threaded rod that passes through and is installed on the fixed plate. One end of the threaded rod extends into the receiving cavity. The end of the threaded rod that extends into the receiving cavity is fixed with an ejector spring by a fixing bolt. The end of the threaded rod that extends out of the fixed plate is threaded with a fixing rod.
[0010] Furthermore, the seed outlet is provided in a plurality of manner, and the plurality of seed outlets are arranged in a circular array with the center of the pressure plate as the center.
[0011] Furthermore, the seeder includes a seed box and a seed guide box installed at the seed outlet, the seed guide box being located on the outer side of the pressure plate and the seed box being located on the inner side of the fixed plate.
[0012] Furthermore, the seed guide box has an outlet, and a moving nozzle is installed on the seed guide box at the outlet via a hinge. A fixed blade protrudes from the side of the seed guide box away from the moving nozzle, and the moving nozzle is fixed to the side of the outlet with the moving blade attached to it.
[0013] Furthermore, the moving nozzle is V-shaped overall, and one end of the moving nozzle has a U-shaped plate-like structure.
[0014] Furthermore, the seed suction port is provided in a plurality of manners, and the plurality of seed suction ports are arranged in a circular array with the axis of the pressure plate as the center.
[0015] (3) Beneficial effects
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model, through the coordination of a fixed plate, a rotatable pressure plate on the outside of the fixed plate, an air suction plate, and a seed suction port, can keep the seeds in a relatively stable environment during operation, effectively avoiding the frequency of seed rotation, thereby effectively protecting the seed coat. The negative pressure adsorption method enables the overall movement of the seeds and their dropping into the sowing area.
[0018] This invention features a seeder that, during operation, uses a rotating nozzle to help compress the soil film. The rotating nozzle also works in conjunction with a fixed blade to cut the film, making seed germination and emergence easier, reducing the risk of scalding or burning seedlings, and increasing seedling survival rate. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a top view of the present invention;
[0022] Figure 3 This is a longitudinal sectional view of the present invention;
[0023] Figure 4 This is a schematic diagram of the structure of this utility model after the plate is disassembled;
[0024] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.
[0025] The labels in the attached diagram are as follows: 1. Pressure plate; 2. Fixed plate; 3. Inlet bell; 4. Suction plate; 5. Seed suction port; 6. Baffle plate; 7. Bell discharge port; 8. Material blocking assembly; 9. Threaded rod; 10. Fixing rod; 11. Fixing bolt; 12. Ejection spring; 13. Seeder; 14. Seeding box; 15. Seed guide box; 16. Fixed blade; 17. Moving nozzle; 171. Hinge; 18. Moving blade. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] This specific embodiment is an air-suction seeding device, such as... Figure 1 As shown, the air-suction seeder includes a pressure plate 1, a fixed plate 2 is rotatably installed at the center of the pressure plate 1, a receiving cavity is opened inside the fixed plate 2, an arc-shaped baffle plate 6 is fixed in the receiving cavity, a bell inlet 3 is opened on one side of the fixed plate 2, the bell inlet 3 is connected to the guide box, an air suction plate 4 is embedded on the side of the fixed plate 2 away from the bell inlet 3, the air suction plate 4 is connected to the air suction pump, a seed suction port 5 is opened on the side of the air suction plate 4 connected to the receiving cavity, a number of seed suction ports 5 are provided, the number of seed suction ports 5 are arranged in a circular array with the axis of the pressure plate 1 as the center, and a bell row port 7 is opened at the bottom of the fixed plate 2.
[0028] By coordinating the fixed plate 2, the rotatable pressure plate 1 on the outside of the fixed plate 2, the air suction plate 4, and the seed suction port 5, the seeds can be kept in a relatively stable environment during operation, which can effectively avoid the frequency of seed rotation and thus effectively protect the seed coat. The seeds are moved as a whole and fall into the sowing area through negative pressure adsorption.
[0029] A seed outlet is provided on the outer side of the pressure plate 1. Several seed outlets are arranged in a circular array with the center of the pressure plate 1 as the center. Through the arrangement of several seed outlets, it can be ensured that the seeder 13 for auxiliary sowing is installed at the seed outlet during operation. The seeder 13 includes a seed box 14 and a seed guide box 15 installed at the seed outlet. The seed guide box 15 is located on the outer side of the pressure plate 1, and the seed box 14 is located on the inner side of the fixed plate 2. The seed guide box 15 has a discharge port. A moving nozzle 17 is hinged to the seed guide box 15 at the discharge port via a hinge 171. A fixed blade 16 is protruding on the side of the seed guide box 15 away from the moving nozzle 17. The moving nozzle 17 is attached to the side of the discharge port and a moving blade 18 is fixed thereon. The moving nozzle 17 is V-shaped in general, and one end of the moving nozzle 17 has a U-shaped plate structure.
[0030] With the seeder 13, the soil film can be pressed down by rotating the nozzle 17 during operation. The fixed blade 16 and the moving blade 18 work together to cut the film during rotation, making it easier for seeds to germinate and emerge, reducing the occurrence of scalding and burning of seedlings, and increasing the survival rate of seedlings.
[0031] A baffle assembly 8 is installed on the side of the fixed plate 2 away from the suction plate 4. The baffle plate 6 has a communication port near the bottom. The baffle assembly 8 is located above the bell mouth 7. The baffle assembly 8 includes a threaded rod 9 that is installed on the fixed plate 2. One end of the threaded rod 9 extends into the receiving cavity. The end of the threaded rod 9 that extends into the receiving cavity is fixed with an ejector spring 12 by a fixing bolt 11. The end of the threaded rod 9 that extends out of the fixed plate 2 is threaded with a fixing rod 10.
[0032] With the setting of the baffle assembly 8, when the seed reaches the ejection spring 12 during operation, the seed will be released from the seed suction port 5 under the pressure of the ejection spring 12 and discharged as a whole through the bell discharge port 7.
[0033] Working principle:
[0034] During operation, the feed box is fixed to the inlet 3 with bolts, and the suction pump is connected to the suction plate 4 through the pipe. The seeds enter the receiving cavity inside the fixed plate 2 through the inlet 3. The suction pump drives the pipe to suck air and sucks air at the seed suction port 5. During the suction process at the seed suction port 5, the seeds are adsorbed at the seed suction port 5. At this time, the pressure plate 1 and the suction plate 4 rotate synchronously. When the suction plate 4 rotates, it drives the seed suction port 5 to rotate and makes the seeds rotate as a whole. When the seeds reach the ejection spring 12, the seeds are released from the seed suction port 5 under the pressure of the ejection spring 12 and are discharged as a whole through the discharge port 7.
[0035] When the pressure plate 1 rotates, it drives the seeder 13 to rotate as a whole. The rotating nozzle 17 assists in pressing the soil film. While rotating, the fixed blade 16 and the moving blade 18 work together to cut the film. At the same time, the bell mouth 7 falls down and drops into the seed box 14 and then into the seed guide box 15 to be sown at the designated position.
[0036] All technical features in this embodiment can be freely combined according to actual needs.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air slot planter comprising a press wheel (1), characterized in that, The center of the pressing disc (1) is rotatably embedded with a fixed disc (2), the fixed disc (2) is internally provided with a containing cavity, the containing cavity is fixedly provided with an arc-shaped blocking plate (6), one side of the fixed disc (2) is provided with an inlet bell mouth (3), the inlet bell mouth (3) is communicated with a material guiding box, a side of the fixed disc (2) away from the inlet bell mouth (3) is embedded with an air suction disc (4), the air suction disc (4) is communicated with an air suction pump, a side of the air suction disc (4) communicated with the containing cavity is provided with a seed suction port (5), the bottom of the fixed disc (2) is provided with a bell mouth (7), the outer side of the pressing disc (1) is provided with a seed outlet, and the seed outlet is provided with a seed sowing device (13) for assisting sowing.
2. A gas-filled hole planter according to claim 1, wherein A material blocking assembly (8) is installed on the side of the fixed disc (2) away from the air suction disc (4), the blocking plate (6) is provided with a communication port near the bottom, and the material blocking assembly (8) is located above the bell mouth (7).
3. A gas-filled hole planter according to claim 2, wherein, The material blocking assembly (8) comprises a threaded rod (9) embedded on the fixed disc (2), one end of the threaded rod (9) extends into the containing cavity, the end of the threaded rod (9) extending into the containing cavity is fixedly provided with an ejection spring (12) through a fixing bolt (11), and one end of the threaded rod (9) extending out of the fixed disc (2) is fixedly provided with a fixed rod (10).
4. The air slot planter of claim 1, wherein, The seed outlet is provided with a plurality of seed outlets arranged in a circular array with the center of the pressing disc (1) as the center.
5. A suction hole planter according to claim 4, wherein, The seed sowing device (13) comprises a seed sowing box (14) and a seed guiding box (15) installed at the seed outlet, the seed guiding box (15) is located on the outer side of the pressing disc (1), and the seed sowing box (14) is located on the inner side of the fixed disc (2).
6. A gas-filled hole planter according to claim 5, wherein, The seed guiding box (15) is provided with a discharge port, the seed guiding box (15) is hingedly connected with a movable nozzle (17) at the position corresponding to the discharge port through a hinge (171), a fixed knife (16) is protrudingly arranged on the side of the seed guiding box (15) away from the movable nozzle (17), and the movable nozzle (17) is fixedly provided with a movable knife (18) on the side abutting the discharge port.
7. A gas-filled hole planter according to claim 6, wherein The movable nozzle (17) is in a V-shaped structure, and one end of the movable nozzle (17) is in a U-shaped plate structure.
8. The air slot planter of claim 1, wherein, The seed suction port (5) is provided with a plurality of seed suction ports (5) arranged in a circular array with the axis of the pressing disc (1) as the center.