CN107736112B - A mechanical and pneumatic combined vegetable precision seed metering device - Google Patents

Abstract

The invention discloses a mechanical pneumatic combined vegetable precision seed sowing device, wherein a driving shaft is sleeved in an inner hole of a rolling bearing, the rolling bearing is positioned by a positioning sleeve, an elastic retainer ring fixes the rolling bearing at a shaft shoulder of a driving shaft, an outer ring of the rolling bearing is in interference fit with an inner hole of an air chamber, a power input end of the driving shaft is connected with a motor through a coupler, a seed sowing plate is arranged on the driving shaft, an air suction channel of the seed sowing plate is connected with an air suction port of a fan through an air suction connecting piece, and an air blowing connecting piece is connected with an air blowing port of the fan through a ventilation pipe. The seed box is attached to the outer side of the air chamber, the seed cleaning brush adjusting plate is attached to the outer side of the air chamber, and the seed cleaning brush is screwed into the seed cleaning brush adjusting plate by threads; the seed stirring wheel is positioned in the seed box, a small motor is connected through a seed stirring shaft, and the seed returning groove is arranged at one side of the seed box; the seed dropping cylinder is arranged below the seed metering disc; a plurality of suction nozzles are arranged on the circumference of the seed metering disc. The invention has the beneficial effects of good sealing performance and capability of realizing the precise sowing of different kinds of vegetable seeds.

Description

A mechanical and pneumatic combined vegetable precision seed metering device

Technical field

The invention belongs to the technical field of agricultural machinery and relates to a mechanical-pneumatic combined vegetable precision seed metering device.

Background technique

The purpose of this invention is to solve the problem of precise sowing of vegetables. At present, vegetable sowing is mainly done manually, and mechanical sowing also has the problem of inaccurate sowing amount. The currently owned vegetable sowing machinery cannot meet the needs of vegetable production. The existing vegetable sowing machinery cannot meet the needs of vegetable production. The air-suction seed metering device in the vegetable seeder has many shortcomings such as poor sealing, single seeding type, different seed sizes, low seeding speed, complex structure, and the cleaned seeds cannot be recycled. There is an urgent need for vegetable precision. Seeder.

Contents of the invention

The object of the present invention is to provide a mechanical-pneumatic combined vegetable precision seed metering device, which solves the problems of poor sealing and poor seeding adaptability in existing air-suction seed metering devices in existing planters.

The technical solution adopted by the present invention includes a drive shaft. The drive shaft is sleeved in the inner hole of the rolling bearing. The rolling bearing is positioned with a positioning sleeve. The elastic retaining ring fixes the rolling bearing at the shoulder of the drive shaft. The outer ring of the rolling bearing passes through the inner hole of the air chamber. Interference fit, the power input end of the drive shaft is connected to the motor through a coupling, the seeding disk is installed on the drive shaft, the suction channel of the seeding disk is connected to the fan suction port through the suction connector, and the blowing connector passes through the ventilation pipe Connected to the blower port of the fan. The seed box fits the outside of the air chamber body, the seed cleaning brush adjustment plate fits the outside of the air chamber body, and the seed cleaning brush is threaded into the seed cleaning brush adjustment plate; the seed stirring wheel is located in the seed box and is connected through the seed stirring shaft Small motor, the seed return trough is made of copper sheet material, the wide side is placed on one side of the seed box, and the narrow side is folded in a U-shape and placed at the tangent between the seed cleaning brush and the seeding plate; the seed drop tube is installed under the seeding plate; seeding A number of suction nozzles are installed on the circumference of the disk, and the suction nozzles are connected with the air suction channel of the seed metering disk; the blowing opening of the air blowing connector is located above the seed dropping tube.

Further, the seeding disk is connected to the air chamber body through an adjusting nut and a compression nut gasket.

Furthermore, three sealing grooves are provided inside the gas chamber body. The large sealing O-ring, the small sealing O-ring, and the blowing port sealing O-ring are respectively placed in the three sealing grooves to seal the gas.

Furthermore, a plurality of threaded holes are provided on the circumference of the seeding plate for replacement of different types of suction nozzles.

Further, by adjusting the height of the seed cleaning brush adjustment plate, seeds of different sizes can be removed.

Furthermore, by changing the type of the seed stirring wheel, the stirring and transportation of seeds of different sizes can be satisfied.

The beneficial effects of the invention are that it has good sealing performance and can achieve precise sowing of different types of vegetable seeds.

Description of the drawings

Figure 1 is a schematic structural diagram of a precision seed metering device;

Figure 2 is a front view of the precision seed metering device;

Figure 3 is a top view of the precision seed metering device;

Figure 4 is a cross-sectional view of the precision seed metering device;

Figure 5 is a schematic diagram of the gas chamber body sealing ring;

Figure 6 is a cross-sectional view of the seeding disk;

Figure 7 is a schematic structural diagram of the suction nozzle.

In the picture, 1. Drive shaft, 2. Rolling bearing, 3. Positioning sleeve, 4. Retaining ring, 5. Air chamber body, 6. Motor, 7. Seed plate, 8. Suction connector, 9. Fan, 10. Air blowing connector, 11. Ventilation pipe, 12. Seed box, 13. Seed cleaning brush adjustment plate, 14. Seed cleaning brush, 15. Seed stirring wheel, 16. Small motor, 17. Seed return tank, 18. Seeding cylinder, 19. Suction nozzle, 20. Adjusting nut, 21. Pressure nut gasket, 22. Large sealing O-ring, 23. Small sealing O-ring, 24. Blow port sealing O-ring.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

As shown in Figures 1 to 7, the present invention includes a drive shaft 1. The drive shaft 1 is sleeved in the inner hole of the rolling bearing 2. The rolling bearing 2 is positioned with a positioning sleeve 3. The elastic retaining ring 4 fixes the rolling bearing 2 on the shoulder of the drive shaft 1. at The channel is connected to the suction port of the fan 9 through the suction connector 8, and the blowing connector 10 is connected to the blowing port of the fan 9 through the ventilation pipe 11.

The seed box 12 is fitted to the outside of the air chamber body 5, the seed cleaning brush adjustment plate 13 is fitted to the outside of the air chamber body 5, the seed cleaning brush 14 is threaded into the seed cleaning brush adjustment plate 13; the seed stirring wheel 15 is located in the seed box 12, the small motor 16 is connected through the seed stirring shaft. The seed return groove 17 is made of copper sheet material. The wide side is placed on one side of the seed box 12, and the narrow side is folded in a U shape and placed at the tangent between the seed cleaning brush 14 and the seeding plate 7. ; The seed dropper 18 is installed below the seeding plate 7; a number of suction nozzles 19 are installed on the circumference of the seeding plate 7, and the suction nozzles 19 are connected with the suction channel of the seeding plate 7; the blowing opening of the air blowing connector 10 is located at Above the seed dropper 18.

The seeding disk 7 is connected to the air chamber body 5 through the adjusting nut 20 and the compression nut gasket 21. The degree of fit of the seeding disk 7 on the air chamber body 5 is controlled by adjusting the adjusting nut 20; three channels are provided on the inside of the air chamber body 5. The sealing groove, the large sealing O-ring 22, the small sealing O-ring 23, and the blowing port sealing O-ring 24 are respectively placed in the three sealing grooves to seal the gas.

When in use, the seeds inside the seed box 12 are stirred by the seed stirring wheel 15 to increase the fluidity of the seeds and transport the seeds to the outlet of the seed box 12. Since the negative pressure chamber of the air chamber body is in a negative pressure state, the seeds will move from the seed box 12 to the outlet of the seed box 12. The outlet of the box 12 is adsorbed on the suction nozzle 19. When the seed metering disk 7 rotates to the position of the seed cleaning brush 14, the seed cleaning brush 14 will brush off the excess seeds and rely on its own gravity to fall along the seed trough 17 to In the seed box 12, it continues to participate in the seed filling process. The seed return tank 17 can be manually adjusted, and the seeds firmly adsorbed on the inner surface of the suction nozzle 19 will follow the rotation of the seeding plate 7 to the air blowing port, and be blown into the air blowing port by the wind. To the seed dropping cylinder 18, the seed arrangement is completed.

The present invention can also control the rotation speed of the seeding disk 7 by changing the rotational speed of the motor 6, thereby controlling the seed spacing of the seeds. The effect of accurately removing excess seeds can be achieved by adjusting the position of the seed cleaning brush adjustment plate 13. The suction nozzle 19 type on the seeding tray 7 can be changed to adapt to the adsorption of different types of vegetable seeds.

The invention provides a method that can achieve precise sowing of different types of vegetable seeds, and recover the cleared seeds into the seed box for efficient utilization, adjustable seeding row spacing and row number, good sealing performance, simple structure and good reliability. Vegetable seed metering device. The advantages of the present invention also include:

(1) The present invention provides a seed return trough under the seed cleaning brush. After the excess seeds are brushed down by the seed cleaning brush, they fall from the seed return trough into the seed box through their own gravity and continue to participate in seed suction.

(2) Increase the fluidity of the seeds in the seed box through the stirring effect of the seed stirring wheel and the grooves on the seed stirring wheel, and transport the seeds to the exit of the seed box to achieve the adsorption effect of the seeds on the seeding plate.

(3) The seed cleaning brush rotates through the thread, and the distance between the bristles and the seed metering plate can be adjusted according to the size of the seeds.

(4) By replacing the suction nozzle parts on the circumference of the seeding plate and the groove wheels with different slot sizes, the filling and adsorption of different seeds can be achieved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention belong to this invention. within the scope of the technical solution of the invention.

Claims (4)

1. A mechanical and pneumatic combined vegetable precision seed sowing device is characterized in that: the device comprises a driving shaft (1), wherein the driving shaft (1) is arranged in a rolling bearing (2), the rolling bearing (2) is positioned by a positioning sleeve (3), an elastic retainer ring (4) is used for fixing the rolling bearing (2) at a shaft shoulder of the driving shaft (1), the outer ring of the rolling bearing (2) is in interference fit with an inner hole of an air chamber body (5), a power input end of the driving shaft (1) is connected with a motor (6) through a coupler, a seed metering disc (7) is arranged on the driving shaft (1), an air suction channel of the seed metering disc (7) is connected with an air suction port of a fan (9) through an air suction connecting piece (8), and an air blowing connecting piece (10) is connected with an air blowing port of the fan (9) through a ventilation pipe (11); the seed box (12) is attached to the outer side of the air chamber body (5), the seed cleaning brush adjusting plate (13) is attached to the outer side of the air chamber body (5), and the seed cleaning brush (14) is screwed into the seed cleaning brush adjusting plate (13) by threads; the seed stirring wheel (15) is positioned in the seed box (12), a small motor (16) is connected through a seed stirring shaft, the seed returning groove (17) is made of copper sheet materials, the wide side is arranged at one side of the seed box (12), and the narrow side is folded into a U shape and is arranged at the tangential position of the seed cleaning brush (14) and the seed metering disc (7); the seed dropping drum (18) is arranged below the seed metering disc (7); a plurality of suction nozzles (19) are arranged on the circumference of the seed metering disc (7), and the suction nozzles (19) are communicated with a suction channel of the seed metering disc (7); the blowing-up opening of the blowing connecting piece (10) is positioned above the seed dropping cylinder (18);

the seed metering disc (7) is connected with the air chamber body (5) through the adjusting nut (20) and the compression nut gasket (21); the inner side of the air chamber body (5) is provided with three sealing grooves, a large sealing O-shaped ring (22) and a small sealing O-shaped ring (23), and the air blowing port sealing O-shaped rings (24) are respectively arranged in the three sealing grooves to play a role in sealing air.

2. A mechanical pneumatic combined vegetable precision seed metering device as claimed in claim 1, wherein: the circumference of the seed metering disc (7) is provided with a plurality of threaded holes for replacing suction nozzles (19) of different types.

3. A mechanical pneumatic combined vegetable precision seed metering device as claimed in claim 1, wherein: seeds of different sizes are removed by adjusting the height of the seed cleaning brush adjusting plate (13).

4. A mechanical pneumatic combined vegetable precision seed metering device as claimed in claim 1, wherein: by varying the type of the seed stirring wheel (15), stirring and transport of seeds of different sizes is satisfied.