Multi-channel spray-quantity-adjustable pneumatic spray-seeding device

Abstract

The invention discloses a multi-channel spray-quantity-adjustable pneumatic spray-seeding device, which relates to the technical field of spray-seeding machines, and comprises a rack, an air source, an airflow ejector, a seed box and a grooved wheel seeder, the air source is arranged at the rear end of the rack, and the airflow ejector is communicated with the air source; a grooved wheel seeder is arranged between the middle part of the airflow ejector and the seed box; the top of a seed-metering device shell in the grooved wheel seeder is communicated with a bottom outlet of a seed box, the bottom of the seed-metering device shell is communicated with the middle of an airflow ejector, a grooved wheel is arranged in the seed-metering device shell, and an output shaft of a gear motor is in transmission connection with the grooved wheel. The air pressure is controlled through the air pump, and the seeding rate is controlled through the gear motor, so that the seeding speed is not influenced by the air pressure, the seeding speed is changed on the premise that the air pressure is not changed, and adaptive regulation and control can be realized according to different vegetation coverage by combining the visual sensor. And the horizontal arrangement can obviously reduce the breakage rate of the coating shells of the coated seeds, so that the germination rate and the growth quality of the seeds are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sprayers, in particular to a multi-channel spraying volume adjustable pneumatic spraying device. Background Art

[0002] my country introduced hydraulic seeding technology in the 1990s and achieved remarkable results at that time. With the promotion and application of pneumatic seeding machines in many countries around the world, people gradually realized the importance of pneumatic seeding in reseeding operations and carried out research and development of pneumatic seeding machines accordingly.

[0003] Existing sprayers are mainly used for precision spraying of crop seeds, usually in a combination of horizontal and vertical arrangements. Research on grassland grass seed sprayers is relatively rare. Patent No. CN113261417A discloses a synchronous air-blowing soil-covering rice direct seeding device, which adjusts the spraying speed by adjusting the air pressure.

[0004] The existing pneumatic seeding devices have difficulty matching seeding speed with seeding uniformity, and the efficiency and effect of seeding operations are not ideal. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-channel pneumatic seeding device with adjustable spray volume to solve the problems existing in the above-mentioned prior art, realize adaptive seeding, and improve the efficiency and effect of seeding operations.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a multi-channel adjustable spray volume pneumatic seeding device, comprising a frame, an air source, an airflow ejector, a seed box and a slotted wheel seeding device; the air source is arranged at the rear end of the frame, and the air inlet end of the airflow ejector is connected with the air source; the slotted wheel seeding device is arranged between the middle part of the airflow ejector and the seed box; the slotted wheel seeding device comprises a slotted wheel, a seeding device shell and a reduction motor; the top of the seeding device shell is connected with the bottom outlet of the seed box, the bottom of the seeding device shell is connected with the middle part of the airflow ejector, the slotted wheel is arranged in the seeding device shell, and the output shaft of the reduction motor is drivingly connected with the slotted wheel.

[0008] Optionally, the air source includes an air pump, and an air outlet of the air pump is connected to an air inlet of the airflow ejector.

[0009] Optionally, the air pump is a high-pressure centrifugal air pump.

[0010] Optionally, an air flow distributor is arranged between the air source and the air inlet of the air flow injector, the air inlet of the air flow distributor is connected to the air source, and a plurality of air outlets are arranged at the air outlet end of the air flow distributor, and each of the air outlets is respectively connected to an air inlet of the air flow injector.

[0011] Optionally, the air outlet of the airflow injector is provided with an airflow diffuser.

[0012] Optionally, a motor support is provided on the frame at one side of the seed metering device housing, and the reduction motor is provided on the motor support.

[0013] Optionally, the sheave and the reduction motor are connected via a coupling.

[0014] Optionally, a visual sensor is provided at the front end of the frame, and the visual sensor is electrically connected to a control module, and the control module is electrically connected to both the reduction motor and the air source.

[0015] Optionally, the control module includes a single chip microcomputer.

[0016] Optionally, an airflow acceleration section with a reduced cross-section is provided inside the airflow ejector.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The multi-channel adjustable spray volume pneumatic sowing device of the present invention controls the air pressure through the air pump and controls the sowing amount through the reduction motor, so that the air pressure does not affect the sowing speed. Under the premise of constant air pressure, the sowing speed can be changed. Combined with the visual sensor, it can realize adaptive regulation of field sowing conditions according to different vegetation coverage. By controlling the output air pressure of the air pump, the air flow speed is changed according to different coated seeds. The air flow distributor adopts a horizontal arrangement to significantly reduce the breakage rate of the coated shell of the coated seeds, thereby improving the germination rate and growth quality of the seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is the whole machine structure diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the seed supply system of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the gas supply system of the present invention;

[0023] Explanation of the reference numerals: 1. Frame; 2. Air flow distributor; 3. High-pressure centrifugal air pump; 4. Seed box; 5. Groove wheel seeder; 6. Single-chip microcomputer; 7. Visual sensor; 8. Air flow injector; 9. Air flow diffuser; 10. Groove wheel; 11. Seeder housing; 12. Motor support; 13. Reducer motor; 14. Coupling. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 3 As shown, this embodiment provides a multi-channel adjustable spray volume pneumatic seeding device, including an air supply system, a seed supply system and a control system. The air supply system includes a high-pressure centrifugal air pump 3, an air flow distributor 2, an air flow injector 8 and an air flow diffuser 9; the seed supply system includes a seed box 4 and a groove wheel seeding device 5; the control system includes a visual sensor 7 and a single-chip computer 6.

[0027] The high-pressure centrifugal air pump 3 is arranged at the rear end of the frame 1, and an air flow distributor 2 is arranged between the high-pressure centrifugal air pump 3 and the air inlet of the air flow injector 8. The air inlet of the air flow distributor 2 is connected to the high-pressure centrifugal air pump 3, and a plurality of air outlets are arranged at the air outlet end of the air flow distributor 2, and each air outlet is respectively connected to the air inlet of an air flow injector 8.

[0028] A grooved wheel seeder 5 is arranged between the middle of the airflow ejector 8 and the seed box 4; the grooved wheel seeder 5 includes a grooved wheel 10, a seeding device housing 11 and a reduction motor 13; a motor support 12 is arranged on one side of the seeding device housing 11 on the frame 1, and the reduction motor 13 is arranged on the motor support 12. The top of the seeding device housing 11 is connected to the bottom outlet of the seed box 4, the bottom of the seeding device housing 11 is connected to the middle of the airflow ejector 8, the grooved wheel 10 is arranged in the seeding device housing 11, and the output shaft of the reduction motor 13 is connected to the grooved wheel 10 through a coupling 14. An airflow diffuser 9 is arranged at the air outlet of the airflow ejector 8.

[0029] A visual sensor 7 is provided at the front end of the frame 1 , and the visual sensor 7 is electrically connected to the single-chip microcomputer 6 , and the single-chip microcomputer 6 is electrically connected to the reduction motor 13 and the high-pressure centrifugal air pump 3 .

[0030] The working principle of the seeding device is as follows: the high-pressure centrifugal air pump 3 provides a wind source and transmits the wind to the airflow distributor 2. The airflow distributor 2 distributes the wind to four outlets at a constant speed and flow rate. The four outlets each transmit the wind to the airflow injector 8. The cross-sectional area inside the airflow injector 8 is reduced for a period of time. The airflow will have an acceleration effect in the airflow injector 8. The visual sensor 7 collects the vegetation coverage image in front and transmits it to the single-chip microcomputer 6 for comparison. The single-chip microcomputer 6 controls the speed of the reduction motor 13 according to the comparison result, thereby controlling the speed of the groove wheel 10, and then controlling the number of seeds falling into the upper entrance of the airflow injector 8. The seeds falling into the airflow injector 8 will be carried by the high-speed airflow into the airflow diffuser 9. In the airflow diffuser 9, the seeds will be carried out of the pipeline by the airflow, and thus fall on the grassland ground, and finally complete the spray seeding.

[0031] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-channel adjustable spray volume pneumatic seeding device, characterized in that: It includes a frame, an air source, an air flow ejector, a seed box and a slotted wheel seeder; the air source is arranged at the rear end of the frame, and the air inlet end of the air flow ejector is connected with the air source; the slotted wheel seeder is arranged between the middle part of the air flow ejector and the seed box; the slotted wheel seeder includes a slotted wheel, a seeding device shell and a reduction motor; the top of the seeding device shell is connected with the bottom outlet of the seed box, the bottom of the seeding device shell is connected with the middle part of the air flow ejector, the slotted wheel is arranged in the seeding device shell, and the output shaft of the reduction motor is drivingly connected with the slotted wheel.

2. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1 is characterized in that: The air source comprises an air pump, and the air outlet of the air pump is connected to the air inlet of the airflow ejector.

3. The multi-channel adjustable spray volume pneumatic seeding device according to claim 2 is characterized in that: The air pump is a high-pressure centrifugal air pump.

4. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1 is characterized in that: An air flow distributor is arranged between the air source and the air inlet of the air flow injector, the air inlet of the air flow distributor is connected to the air source, and a plurality of air outlets are arranged at the air outlet end of the air flow distributor, each of the air outlets is respectively connected to an air inlet of the air flow injector.

5. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1 is characterized in that: The air outlet of the airflow ejector is provided with an airflow diffuser.

6. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1, characterized in that: A motor support is arranged on the frame at one side of the seed metering device housing, and the reduction motor is arranged on the motor support.

7. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1, characterized in that: The groove wheel and the reduction motor are connected via a coupling.

8. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1, characterized in that: A visual sensor is arranged at the front end of the frame, and the visual sensor is electrically connected to a control module, and the control module is electrically connected to both the reduction motor and the air source.

9. The multi-channel adjustable spray volume pneumatic seeding device according to claim 8, characterized in that: The control module includes a single chip microcomputer.

10. The multi-channel adjustable spray volume pneumatic seeding device according to claim 1, characterized in that: An airflow accelerating section with a reduced cross-section is arranged inside the airflow ejector.

Images