Seed-metering pneumatic conveying device for air-suction type no-tillage planter

Abstract

The invention relates to the technical field of agriculture, and discloses a seed-metering pneumatic conveying device for an air-suction type no-tillage planter, which comprises a seed-metering device, the outer wall of the seed-metering device is fixedly connected with an adapter substitute, the outer wall of the adapter substitute is fixedly connected with an adjusting pipe, the outer wall of the adapter substitute is fixedly connected with a ventilation cavity, and the ventilation cavity is fixedly connected with an air outlet of the air-suction type no-tillage planter. An air inlet pipe is fixedly connected to the inner wall of the ventilation cavity, a connecting pipe is fixedly connected to the inner wall of the ventilation cavity, the top end of the connecting pipe is connected to the bottom end of an adapter in an abutting mode, and a seed guide pipe is fixedly connected to the outer wall of the connecting pipe. Through mutual cooperation between the seed guide pipe and the ventilation cavity, the effect that seeds fall at a uniform speed is achieved, the problem that holes or double holes are formed due to seed jumping caused by gravity seed falling of a common air suction seed sowing device is solved, the seeds cannot be blocked and adhered in the seed guide pipe, the uniform falling speed can be kept, and the seed sowing efficiency is improved. Finally, the seeds accurately fall into the dug seed furrows, and the seeding operation is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural technology, and particularly relates to a seed-dispensing air-suction type no-tillage seeding machine. BACKGROUND

[0002] With the expansion of large-scale farms and the acceleration of farmland transfer, the speed of machine operation needs to be improved. With the increase in the cost of high-quality seeds, precision seeding has become a trend to replace traditional broadcasting. The problems of missing and over-seeding of traditional mechanical seeders cause serious seed waste, and precise seeding technology is urgently needed. In addition, crop planting is expanding from single food crops to economic crops, and the traditional seeders have poor adaptability to irregular and small seeds, which cannot meet the diversified needs.

[0003] However, in the prior art, the seeder relies on mechanical gravity seed dropping, and the seed-dispensing air-suction type no-tillage seeding machine combines negative pressure adsorption and positive pressure blowing double air flow control, solves the problems of easy blockage and high energy consumption of the air-suction type seeder, and can adapt to high-speed operation. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a seed-dispensing air-suction type no-tillage seeding machine, which solves the problems of easy blockage and high energy consumption of the air-suction type seeder.

[0005] To achieve the above object, the technical scheme is as follows: a seed-dispensing air-suction type no-tillage seeding machine, comprising a seed dispenser, a conversion joint is fixedly connected to the outer wall of the seed dispenser, an adjusting pipe is fixedly connected to the outer wall of the conversion joint, and a connecting circular hole is formed in the outer wall of the adjusting pipe.

[0006] Through the above technical scheme: the high-speed rotation of the fan promotes the generation of negative pressure wind and positive pressure wind, two kinds of complementary air flows, and forms a closed-loop air flow seeding system. The negative pressure wind is conducted to the adsorption area of the seed plate through a special air duct, and a stable negative pressure field is formed at the adsorption hole on the surface of the seed plate to realize seed adsorption positioning. At the same time, the positive pressure wind is directionally delivered to the closed interior of the air chamber through the air inlet pipe, and a high-pressure environment is formed in the chamber. When the high-pressure airflow is ejected from the chamber nozzle, the cross section is contracted to form a high-speed airflow beam. At this time, the high-speed positive pressure airflow quickly wraps and carries the falling seeds, and then the seeds enter the seed guide pipe smoothly under the guidance of the connecting pipe. This is beneficial to prevent the seeds from being blocked and adhered in the seed guide pipe, and can maintain a uniform falling speed, so that the seeds can finally fall into the prepared seed furrow accurately and complete the seeding operation.

[0007] Preferably, the outer wall of the adjusting pipe is slidably connected with an air chamber.

[0008] Preferably, the outer wall of the adjusting pipe is fixedly connected with a double air duct pipe, and the outer wall of the double air duct pipe is fixedly connected to the inner wall of the air chamber.

[0009] Preferably, the inner wall of the double air duct pipe is fixedly connected with a connecting pipe, and the outer wall of the connecting pipe is slidingly connected to the inner wall of the ventilation cavity.

[0010] Preferably, the bottom end of the connecting pipe is fixedly connected with a seed guiding pipe.

[0011] Preferably, the inner wall of the double air duct pipe is fixedly connected with an air inlet pipe, and the outer wall of the air inlet pipe is slidingly connected to the inner wall of the ventilation cavity.

[0012] Preferably, the inner wall of the air inlet pipe is provided with an air inlet hole.

[0013] Preferably, the adjusting pipe adopts a telescopic sleeve structure, and the overlapping length of the inner sleeve pipe and the outer sleeve pipe is adjusted by axial relative telescopic adjustment, so as to change the cross-sectional size of the airflow passage and realize air volume adjustment.

[0014] Preferably, the inner wall of the ventilation cavity is fixedly connected with an air inlet pipe.

[0015] Preferably, the inner wall of the ventilation cavity is fixedly connected with a connecting pipe, and the top end of the connecting pipe is abuttingly connected to the bottom end of the conversion joint.

[0016] Preferably, the outer wall of the connecting pipe is fixedly connected with a seed guiding pipe.

[0017] Working principle: when the precision seeder is driven by a tractor or other power machine for operation, the rear output shaft drives the fan to rotate at high speed through the transmission mechanism, the high-speed rotation of the fan promotes the generation of two kinds of airflow, i.e. negative pressure wind and positive pressure wind, which are complementary to each other and form a closed-loop airflow seed dispensing system. The negative pressure wind is conducted to the adsorption area of the seed dispensing disc through a special air duct, so as to form a stable negative pressure field at the adsorption hole on the surface of the seed dispensing disc to realize seed adsorption positioning. At the same time, the positive pressure wind is directionally delivered to the closed interior of the ventilation cavity through the air inlet pipe, and a high-pressure environment is formed in the cavity. When the high-pressure airflow is ejected from the cavity nozzle, a high-speed airflow beam is formed due to the cross-sectional contraction. When the seed dispensing disc rotates to the seed dropping area, the seed falls into the airflow passage of the ventilation cavity, and at this time, the high-speed positive pressure airflow rapidly wraps the falling seed, so that the seed enters the seed guiding pipe stably under the wrapping of the airflow and the guiding effect of the connecting pipe. This is beneficial to prevent the seed from being congested and adhered in the seed guiding pipe, and can keep the uniform falling speed, so that the seed is finally accurately dropped into the prepared seed furrow to complete the seeding operation.

[0018] The application provides a seed dispensing air feeding device for an air suction type no-tillage seeder.

[0019] 1. The seed speed is uniformly dropped by the cooperation between the guide tube and the ventilation cavity, the problems of easy blockage and high energy consumption of the air suction seed metering device are solved, the seed is not crowded and adhered in the guide tube, the uniform dropping speed is maintained, and finally the seed is accurately dropped into the prepared seed furrow to complete the seeding operation.

[0020] 2. The high-speed seed dropping is realized by changing the scale of the adjusting pipe to the appropriate air volume, the problems of seed skipping and double holes caused by gravity seed dropping of the ordinary air suction seed metering device are solved, and the seeding accuracy under high-speed operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the present application;

[0022] Figure 2 is a schematic view of the internal structure of the seed metering device of the present application;

[0023] Figure 3 is a schematic view of the local structure of the conversion joint of the present application;

[0024] Figure 4 is a schematic view of the local structure of the ventilation cavity of the present application;

[0025] Figure 5 is a schematic view of the local structure of the connecting pipe of the present application;

[0026] Figure 6 is a schematic view of the local structure of the guide tube of the present application;

[0027] Figure 7 is a schematic view of the internal structure of the air inlet pipe of the present application.

[0028] Among them, 1, seed metering device; 2, conversion joint; 3, adjusting pipe; 4, ventilation cavity; 5, connecting pipe; 6, guide tube; 7, air inlet pipe; 8, connecting round hole; 9, air inlet hole; 10, double air duct pipe. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in combination with the drawings of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 3The embodiment of the present application provides a seed-ejection air-assisted no-tillage seeding machine with a seed-ejection air-feed device, which comprises a seed-ejection device 1, a conversion joint 2 fixedly connected to the outer wall of the seed-ejection device 1, an adjusting pipe 3 fixedly connected to the outer wall of the conversion joint 2, and a connecting circular hole 8 formed in the outer wall of the adjusting pipe 3.

[0031] Specifically, the negative pressure generated by the fan is conducted to the adsorption area of the seed-ejection device 1 through the special air duct, and a stable negative pressure field is formed at the adsorption hole on the surface of the seed-ejection disc, the conversion joint 2 is used for the connection of the air-flow adjusting channel and the seed-ejection channel, the seeds delivered by the seed-ejection device 1 are smoothly guided into the ventilation cavity 4, the smooth flow of the air flow between the components is ensured, the air-assisted seed-ejection and the air-feed seed-guiding functions are cooperatively connected, and the adjusting pipe 3 is used for adjusting the air-suction pressure and the air-flow speed in the adjusting device, the negative pressure intensity at the seed-ejection device 1 is accurately controlled by adjusting the size of the pipe-body air-flow channel, and it is ensured that the seed-ejection device 1 can stably adsorb the seeds and the seeds will not be damaged due to the excessive negative pressure.

[0032] Please refer to the accompanying drawings Figure 4 - the accompanying drawings Figure 7 The outer wall of the adjusting pipe 3 is slidably connected with the ventilation cavity 4, the outer wall of the adjusting pipe 3 is fixedly connected with a double-air-duct pipe 10, the outer wall of the double-air-duct pipe 10 is fixedly connected to the inner wall of the ventilation cavity 4, the inner wall of the double-air-duct pipe 10 is fixedly connected with a connecting pipe 5, the outer wall of the connecting pipe 5 is slidably connected to the inner wall of the ventilation cavity 4, the bottom end of the connecting pipe 5 is fixedly connected with a seed-guiding pipe 6, the inner wall of the double-air-duct pipe 10 is fixedly connected with an air inlet pipe 7, the outer wall of the air inlet pipe 7 is slidably connected to the inner wall of the ventilation cavity 4, the inner wall of the air inlet pipe 7 is provided with an air inlet hole 9, and the adjusting pipe 3 adopts a telescopic sleeve structure, the overlapping length of the inner and outer sleeve pipes is adjusted by the axial relative telescopic adjustment, the size of the cross section of the air-flow channel is changed, and air-flow adjustment is realized.

[0033] Specifically, the positive pressure air generated by the fan is directionally delivered to the inside of the closed cavity of the ventilation cavity 4 through the air inlet pipe 7, a high-pressure environment is formed in the cavity, when the air flow is sprayed out of the cavity spout, a high-speed air flow beam is formed due to the cross section contraction, when the seed-ejection device 1 rotates to the seed-falling area, the seeds fall into the air-flow channel of the ventilation cavity 4, at this time, the high-speed positive pressure air flow rapidly wraps and entrains the falling seeds, a seed-carrying delivery mode is formed, the seeds are wrapped by the air flow, are smoothly guided into the seed-guiding pipe 6 by the guiding effect of the connecting pipe 5, the seeds will not be congested and adhered in the seed-guiding pipe 6 due to the continuous pushing of the high-speed air flow, and can keep a uniform falling speed, finally, the seeds are accurately dropped into the prepared seed furrow, and the seeding work is completed.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A seed metering and pneumatic conveying device for a pneumatic suction no-till planter, comprising a seed meterer (1), characterized in that: The outer wall of the seed meter (1) is fixedly connected to a conversion connector (2), and the outer wall of the conversion connector (2) is fixedly connected to an adjusting pipe (3). The outer wall of the adjusting pipe (3) is provided with a connecting round hole (8).

2. The seed conveying device for a pneumatic no-till planter according to claim 1, characterized in that: The outer wall of the regulating pipe (3) is slidably connected to a ventilation cavity (4).

3. The seed conveying device for a pneumatic suction no-till planter according to claim 1, characterized in that: The outer wall of the regulating pipe (3) is fixedly connected to a double air duct pipe (10), and the outer wall of the double air duct pipe (10) is fixedly connected to the inner wall of the ventilation cavity (4).

4. The seed conveying device for a pneumatic suction no-till planter according to claim 3, characterized in that: The inner wall of the dual air duct (10) is fixedly connected to a connecting pipe (5), and the outer wall of the connecting pipe (5) is slidably connected to the inner wall of the ventilation cavity (4).

5. The seed conveying device for a pneumatic suction no-till planter according to claim 4, characterized in that: The bottom end of the connecting pipe (5) is fixedly connected to the seed guide pipe (6).

6. The seed conveying device for a pneumatic suction no-till planter according to claim 4, characterized in that: The inner wall of the dual air duct (10) is fixedly connected to an air inlet pipe (7), and the outer wall of the air inlet pipe (7) is slidably connected to the inner wall of the ventilation cavity (4).

7. The seed conveying device for a pneumatic suction no-till planter according to claim 6, characterized in that: The inner wall of the air inlet pipe (7) is provided with an air inlet hole (9).

8. The seed conveying device for a pneumatic suction no-till planter according to claim 1, characterized in that: The regulating pipe (3) adopts a telescopic sleeve structure. By adjusting the overlapping length of the inner and outer sleeves through axial relative telescopic adjustment, the cross-sectional size of the airflow channel is changed, thereby realizing air volume regulation.

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