Quick-changeable air seed meter with adjustable seed quantity

Abstract

The application discloses a quick-changeable air-type seed metering device with adjustable seeding quantity, and particularly relates to the technical field of seed metering devices, which comprises two reinforced material taking suction disc assemblies for taking materials, two reinforced hollow seed discharge shell assemblies installed on opposite sides of the two reinforced material taking suction disc assemblies and used for discharging materials, and seed box assemblies slidably connected to the two reinforced hollow seed discharge shell assemblies and used for material conveying. The suction hole is shielded when the suction hole blocking piece is displaced, the flow size during seeding can be easily adjusted according to requirements, the disturbance to the seed colony can be increased, the fluidity is improved, the seed metering is facilitated, the seed area and the seed feeding area are separated by the seed spacing brush, the suction hole can be cleaned, the suction hole is kept unobstructed, each seed box can be moved to the top of the seed supply channel one by one, different seed boxes can convey materials, the suction, seed carrying and seed feeding processes are sequentially circulated, and the application has good practicability.

Description

Technical Field

[0001] This invention relates to the field of seed metering technology, and more specifically, to a pneumatic seed metering device with adjustable seeding rate that allows for rapid seed change. Background Technology

[0002] A pneumatic seed metering device with adjustable seed rate and quick seed change capability is an agricultural machinery device used for rapidly and accurately sowing crop seeds in farmland. It typically consists of a seed storage tank, a seed dispensing system, a seed conveying system, and a plant protection system. This device can quickly and accurately place seeds into the soil, saving time and labor costs associated with manual sowing. It can cover large areas of farmland in a short time, improving planting efficiency.

[0003] Existing pneumatic seed metering devices with adjustable seed quantity and rapid seed change capabilities are mainly divided into two categories: mechanical and pneumatic. Mechanical seed metering devices mostly use orifice or grooved wheel seed metering devices, with random seed quantity. The working principle of pneumatic seed metering devices is to use air pressure to push seeds from the storage tank into the discharge system. The air source generates airflow through the air pressure control system, drawing seeds from the storage tank into the pipes of the discharge system.

[0004] Among them, a search revealed that patent application number CN202111225963.8 discloses a pneumatic seed dispenser and a pneumatic seed metering device with adjustable seed quantity for rapid seed change, relating to the field of agricultural technology. This pneumatic seed dispenser includes a seed box and multiple first conveying pipes. The seed box has a seeding space for holding seeds. The multiple first conveying pipes are all connected to the seed box and are used to communicate with the seeding unit of the pneumatic seed metering device with adjustable seed quantity for rapid seed change. A first suction port is provided on the first conveying pipe, facing downwards and communicating with the seeding space. The first conveying pipe is used to introduce airflow to generate negative pressure at the first suction port, thereby drawing seeds from the seeding space into the first conveying pipe through the first suction port, and then conveying the seeds to the seeding unit under the action of the airflow.

[0005] When this structure is in use, airflow is introduced into the first conveying pipe, and a negative pressure suction is generated at the downward-facing first suction port to directly draw seeds from the seeding space into the first conveying pipe. The seeds entering the first conveying pipe will also move along the first conveying pipe to the seeding unit under the drive of the airflow. Since the suction force of the first suction port is limited, it will gradually draw in the seeds, thereby achieving the purpose of evenly distributing the seeds. The seeds are evenly transported into the first conveying pipe by airflow. This conveying method is not prone to clogging and the conveying is relatively stable. However, it is not easy to make appropriate adjustments for different precision seeding scenarios, which makes the device less convenient to use. It usually uses a single seed box, which makes it difficult to quickly switch between different seeds during field operations, resulting in low adaptability of the device during use. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pneumatic seed metering device with adjustable seeding rate that can quickly change seeds, aiming to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic seed metering device with adjustable seed quantity that can be quickly changed, comprising two reinforced material suction disc assemblies for material collection and a reinforced hollow seed metering shell assembly installed on one side opposite to the two reinforced material suction disc assemblies for material discharge, and a seed box assembly for material conveying slidably connected to each of the two reinforced hollow seed metering shell assemblies.

[0008] The reinforced material-collecting and suction plate assembly includes a reinforced material-collecting and suction plate disposed within a reinforced hollow seed-dispensing housing assembly. Several seed-collecting hole baffles are distributed around the outer side of the reinforced material-collecting and suction plate and along its circumference, each slidably connected to the plate and used for blocking. Each seed-collecting hole baffle has two seed-collecting holes perforated at one end on the surface of the reinforced material-collecting and suction plate. A rotating end cap is provided on the side of the seed-collecting hole baffle facing away from the reinforced material-collecting and suction plate. The rotating end cap is magnetically fixed to the reinforced material-collecting and suction plate by a micro-magnet. Several sliding grooves are distributed around the side of the rotating end cap facing the seed-collecting hole baffles and along its circumference, each located on a corresponding side of the seed-collecting hole baffle. A seed-collecting hole baffle slide rod is slidably connected within each of the sliding grooves and mounted on the corresponding seed-collecting hole baffle.

[0009] As can be seen, in the above technical solution, when the rotating end cap is rotated, each seed suction hole baffle moves along the guide of the seed suction hole baffle slide rod and slide groove on the enhanced material suction plate, blocking the seed suction hole, making it easy to adjust the flow rate during sowing according to the needs, and increasing the disturbance to the seed community, improving the flow rate, and facilitating seed discharge.

[0010] The reinforced hollow seed metering housing assembly includes a reinforced hollow seed metering housing, and a bushing for limiting the position is provided in the middle of the reinforced hollow seed metering housing. The reinforced hollow seed metering housing is located outside the reinforced material suction plate. A material guide pipe for guiding material is provided on the outside of the reinforced hollow seed metering housing. A seed supply channel is opened at the top of the material guide pipe. A seed-separating brush is provided inside the reinforced hollow seed metering housing. A seed-unloading block that is detachably connected to the reinforced hollow seed metering housing is provided at the bottom of the seed-separating brush. The seed-separating brush is perpendicular to the reinforced material suction plate. A flange shaft is provided in the middle of the bushing, and the flange shaft is detachably connected to the reinforced material suction plate by bolts. One end of the flange shaft passes through the bushing and extends to the outside of the reinforced hollow seed metering housing. A drive shaft is provided in the middle of the flange shaft.

[0011] As can be seen, in the above technical solution, the material is transported to the guide pipe and the reinforced hollow seed metering shell through the seed supply channel. At the same time, the seed-separating brush is perpendicular to the reinforced material suction plate to separate the seed area and the seed feeding area. It can also clean the seed suction hole to ensure that the seed suction hole is unobstructed.

[0012] The seed box assembly includes a seed box disposed on top of the reinforced hollow seed discharge shell assembly. The bottom of the seed box is snapped with a seed box insert for material isolation. Several seed compartments are arranged side by side inside the seed box and are respectively connected to the top of the corresponding seed box inserts. Slide plates for guiding the seed box assembly are provided on both sides of the surface of the seed supply channel. The seed box is slidably connected to the slide plates.

[0013] As can be seen, in the above technical solution, the seed box inserts at the bottom of each seed box are pulled out, and the seed box assembly is pushed to adjust its position by the guide of the plate in the reinforced hollow seed discharge shell assembly, so that each seed box can be moved to the top of the seed supply channel one by one, which facilitates the material transportation of different seed boxes.

[0014] An air chamber housing is provided between the two enhanced material suction disc assemblies. A negative pressure air chamber is provided inside the air chamber housing, and a positive pressure air chamber is provided outside the negative pressure air chamber located inside the air chamber housing. The negative pressure air chamber is connected to an external negative pressure system through a negative pressure channel, and the positive pressure air chamber is connected to an external positive pressure system through a positive pressure channel.

[0015] As can be seen from the above technical solution, when the seed suction hole on the enhanced material suction plate is connected to the negative pressure air chamber, the seeds in the enhanced hollow seed metering shell will be adsorbed in the seed suction hole under the agitation of the seed suction hole baffle and the action of negative pressure and rotate with the enhanced material suction plate. When the seed suction hole is connected to the positive pressure air chamber, the seeds adsorbed on the enhanced material suction plate will fall off under the action of gravity and positive pressure and be discharged. This is a pneumatic seed metering device with adjustable seed quantity that can quickly change seeds.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. When the present invention is used, by rotating the rotating end cap, each seed suction hole baffle moves along the guide of the seed suction hole baffle slide rod and slide groove on the enhanced material suction plate, blocking the seed suction hole, making it easy to adjust the flow rate during sowing according to the needs, and increasing the disturbance to the seed community, improving the flow rate, and facilitating seed discharge.

[0018] 2. The present invention conveys the material to the guide pipe and the reinforced hollow seed metering shell through the seed supply channel. At the same time, the seed-separating brush is perpendicular to the reinforced material suction plate to separate the seed area and the seed feeding area, and can also clean the seed suction hole to ensure that the seed suction hole is unobstructed.

[0019] 3. The present invention pulls out the seed box inserts at the bottom of each seed box and pushes the seed box assembly to adjust its position by the guide of the plate slide in the reinforced hollow seed discharge shell assembly, so that each seed box can be moved to the top of the seed supply channel one by one, which facilitates the material transportation of different seed boxes;

[0020] 4. In this invention, when the seed suction hole on the enhanced material suction plate is connected to the negative pressure air chamber, the seeds in the enhanced hollow seed metering shell will be adsorbed into the seed suction hole under the stirring of the seed suction hole baffle and the negative pressure and rotate with the enhanced material suction plate. When the seed suction hole is connected to the positive pressure air chamber, the seeds adsorbed on the enhanced material suction plate will fall off under the action of gravity and positive pressure and be discharged. This invention provides a pneumatic seed metering device with adjustable seed quantity that can quickly change seeds.

[0021] In summary, the overall design is simple and the structure is reasonable. Through the corresponding cooperation of each component, the seed suction hole baffle blocks the seed suction hole when it moves, making it easy to adjust the flow rate during sowing according to needs. It can also increase the disturbance to the seed community, improve the fluidity, and facilitate seed dispensing. The seed separation brush separates the seed area and the seed dispensing area, and can also clean the seed suction hole to ensure that the seed suction hole is unobstructed. Each seed box can be moved to the top of the seed supply channel one by one, which facilitates the conveying of materials by different seed boxes. The seed suction, seed carrying and seed dispensing processes are carried out in a sequential cycle, which is convenient to use and has good practicality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is an exploded view of the overall structure of the present invention.

[0025] Figure 3 This is a front view of the air chamber housing, the reinforced material suction plate, and the rotating end cap of the present invention.

[0026] Figure 4 The diagram shows the enhanced material handling and suction plate, suction hole baffle, and micro magnet of this invention.

[0027] Figure 5 This is a front view of the reinforced hollow seed metering shell assembly of the present invention.

[0028] Figure 6 This is a cross-sectional view of the seed box assembly of the present invention.

[0029] The attached figures are labeled as follows: 1. Reinforced material suction plate assembly; 101. Reinforced material suction plate; 102. Seed suction hole baffle; 103. Miniature magnet; 104. Seed suction hole baffle slide bar; 105. Flange shaft; 106. Rotating end cover; 107. Slide groove;

[0030] 2. Reinforced hollow seed metering shell assembly; 201. Reinforced hollow seed metering shell; 202. Feed guide pipe; 203. Seed supply channel; 204. Slide plate; 205. Seed separating brush; 206. Seed unloading block; 207. Bushing;

[0031] 3. Seed box assembly; 301. Seed box; 302. Seed box insert; 303. Seed compartment;

[0032] 4. Drive shaft;

[0033] 5. Air chamber shell; 501. Negative pressure air chamber; 502. Positive pressure air chamber; 503. Positive pressure channel; 504. Negative pressure channel. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] As attached Figure 1-6 The pneumatic seed metering device with adjustable seed quantity shown can perform xx by coordinating the various structures such as the enhanced material suction plate assembly 1, the enhanced hollow seed metering shell assembly 2, the seed box assembly 3, and the air chamber shell 5. The specific structural settings of the components are as follows.

[0038] The reinforced material suction plate assembly 1 includes a reinforced material suction plate 101 disposed within a reinforced hollow seed dispensing housing assembly 2. Several seed suction hole baffles 102 are distributed around the outer side of the reinforced material suction plate 101 and along its circumference from its axis. These baffles are slidably connected to the reinforced material suction plate 101 and serve as barriers. Each seed suction hole baffle 102 has two seed suction holes extending through it onto the surface of the reinforced material suction plate 101. The seed suction hole baffles 102 are positioned away from the reinforced hollow seed dispensing housing assembly 2. A rotating end cover 106 is provided on one side of the material suction plate 101. The rotating end cover 106 and the reinforced material suction plate 101 are magnetically fixed by a micro magnet 103. The rotating end cover 106 faces the seed suction hole baffle 102 and has several grooves 107 distributed around the circumference of the axis of the rotating end cover 106, which are respectively located on one side of the corresponding seed suction hole baffle 102. Each groove 107 is slidably connected to a seed suction hole baffle slide rod 104 installed on the corresponding seed suction hole baffle 102.

[0039] The reinforced hollow seed metering shell assembly 2 includes a reinforced hollow seed metering shell 201, and a bushing 207 for limiting is provided in the middle of the reinforced hollow seed metering shell 201. The reinforced hollow seed metering shell 201 is located outside the reinforced material suction plate 101, and a guide pipe 202 for guiding material is provided on the outside of the reinforced hollow seed metering shell 201. A seed supply channel 203 is opened at the top of the guide pipe 202. A seed-separating brush 205 is provided inside the reinforced hollow seed metering shell 201. The bottom of the seed brush 205 is provided with a seed unloading block 206 that is detachably connected to the reinforced hollow seed metering housing 201. The seed brush 205 is vertically arranged with the reinforced material suction plate 101. The middle of the bushing 207 is provided with a flange shaft 105, and the flange shaft 105 is detachably connected to the reinforced material suction plate 101 by bolts. One end of the flange shaft 105 passes through the bushing 207 and extends to the outside of the reinforced hollow seed metering housing 201. The middle of the flange shaft 105 is provided with a drive shaft 4.

[0040] The seed box assembly 3 includes a seed box 301 disposed on the top of the reinforced hollow seed housing assembly 2. The bottom of the seed box 301 is snapped with a seed box insert 302 for material isolation. Inside the seed box 301, several seed chambers 303 are arranged side by side and are respectively connected to the top of the corresponding seed box insert 302. Both sides of the surface of the seed supply channel 203 are provided with sliding plates 204 for guiding the seed box assembly 3. The seed box 301 is slidably connected to the sliding plates 204.

[0041] An air chamber housing 5 is provided between the two enhanced material suction plates assemblies 1. A negative pressure air chamber 501 is provided inside the air chamber housing 5. A positive pressure air chamber 502 is provided outside the negative pressure air chamber 501 and located inside the air chamber housing 5. The negative pressure air chamber 501 is connected to an external negative pressure system through a negative pressure channel 504, and the positive pressure air chamber 502 is connected to an external positive pressure system through a positive pressure channel 503.

[0042] When using the above structure, the device is installed on an external traction device such as a tractor. Different materials are added to the corresponding seed box 301, which transports the materials and delivers them to the guide pipe 202 and the reinforced hollow seed discharge shell 201 through the seed supply channel 203.

[0043] Meanwhile, when the device is in use, the seed box inserts 302 at the bottom of each seed box 301 can be pulled out as needed, and the seed box assembly 3 can be pushed to adjust its position by the guide of the reinforced hollow seed discharge shell assembly 2 through the slide plate 204, so that each seed box 301 can be moved to the top of the seed supply channel 203 one by one, making it easy for different seed boxes 301 to transport materials.

[0044] Simultaneously, during seed metering, the drive shaft 4 is driven to rotate at a uniform speed in the W direction by a power output mechanism or ground wheel drive, realizing the seed suction, seed carrying and seed placement processes in a sequential cycle. The flange shaft 105 of the drive shaft 4 drives the enhanced material suction plate 101 to rotate. When the seed suction hole on the enhanced material suction plate 101 is connected to the negative pressure air chamber 501, the seeds in the enhanced hollow seed metering shell 201 will be adsorbed in the seed suction hole under the agitation of the seed suction hole baffle 102 and the negative pressure and rotate with the enhanced material suction plate 101. When the seed suction hole is connected to the positive pressure air chamber 502, the seeds adsorbed on the enhanced material suction plate 101 will fall off under the action of gravity and positive pressure and be discharged. This is a pneumatic seed metering device with adjustable seed quantity that can quickly change seeds.

[0045] Furthermore, by rotating the rotating end cover 106 in the direction of rotation W of the reinforced material suction plate assembly 1 according to the position of the two seed suction holes, each seed suction hole baffle 102 is guided by the seed suction hole baffle slide rod 104 along the corresponding slide groove 107 and moves on the reinforced material suction plate 101 to block the seed suction holes. When the rotating end cover 106 is rotated in the opposite direction of rotation W, the seed suction hole baffle 102 will slide radially inward, restoring the operation of the two seed suction holes. This makes it easy to adjust the flow rate during sowing according to the needs, and can increase the disturbance to the seed community, improve the flowability, and facilitate seed sowing.

[0046] Unlike existing technologies, this application discloses a pneumatic seed metering device with adjustable seed flow rate that allows for rapid seed replacement. The device uses a baffle plate at the seed suction hole to block the suction hole as it moves, making it easy to adjust the flow rate during sowing as needed. This also increases disturbance to the seed community, improving fluidity and facilitating seed metering. A seed-separating brush 205 separates the seed area from the sowing area and can also clean the suction hole, ensuring it remains unobstructed. Each seed box 301 can be moved sequentially to the top of the seed supply channel 203, facilitating material transport between different seed boxes. This allows for a sequential cycle of seed suction, seed carrying, and seed sowing, providing both ease of use and excellent practicality.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pneumatic seed metering device with adjustable seed rate for quick seed change, characterized in that: It includes two reinforced material-grabbing suction disc assemblies (1) for picking up materials and a reinforced hollow seed discharge housing assembly (2) installed on the opposite side of the two reinforced material-grabbing suction disc assemblies (1) for discharging materials; Both of the two reinforced hollow seed discharge shell assemblies (2) are slidably connected to a seed box assembly (3) for material conveying, and an air chamber shell (5) is provided between the two reinforced material suction plate assemblies (1); The enhanced material suction plate assembly (1) includes an enhanced material suction plate (101) disposed in the enhanced hollow seed metering shell assembly (2). On the outer side of the enhanced material suction plate (101) and along the circumference of the axis of the enhanced material suction plate (101), there are several seed suction hole baffles (102) that are slidably connected to the enhanced material suction plate (101) and used for blocking. Each seed suction hole baffle (102) has two seed suction holes through it on one end located on the surface of the enhanced material suction plate (101). The reinforced hollow seed metering shell assembly (2) includes a reinforced hollow seed metering shell (201), and a bushing (207) for limiting is provided in the middle of the reinforced hollow seed metering shell (201). The reinforced hollow seed metering shell (201) is located on the outside of the reinforced material suction plate (101). A guide pipe (202) for guiding material is provided on the outside of the reinforced hollow seed metering shell (201). A seed supply channel (203) is opened at the top of the guide pipe (202). The seed box assembly (3) includes a seed box (301) disposed on the top of the reinforced hollow seed discharge shell assembly (2), and the bottom of the seed box (301) is snapped with a seed box insert (302) for material isolation; The seed suction hole baffle (102) is provided with a rotating end cap (106) on the side opposite to the enhanced material suction plate (101), and the rotating end cap (106) and the enhanced material suction plate (101) are magnetically fixed by a micro magnet (103). The rotating end cap (106) has a plurality of sliding grooves (107) on the side facing the seed suction hole baffle (102) and distributed around the circumference of the axis of the rotating end cap (106), each located on one side of the corresponding seed suction hole baffle (102), and each of the sliding grooves (107) is slidably connected to a seed suction hole baffle slide rod (104) installed on the corresponding seed suction hole baffle (102).

2. The pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 1, characterized in that: The air chamber housing (5) is provided with a negative pressure air chamber (501) inside, and a positive pressure air chamber (502) is provided outside the negative pressure air chamber (501) located inside the air chamber housing (5).

3. The pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 1, characterized in that: The bushing (207) is provided with a flange shaft (105) in the middle, and the flange shaft (105) is detachably connected to the reinforced material suction plate (101) by bolts.

4. The pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 1, characterized in that: The interior of the reinforced hollow seed metering shell (201) is provided with a seed-separating brush (205), and the bottom of the seed-separating brush (205) is provided with a seed-unloading block (206) that is detachably connected to the reinforced hollow seed metering shell (201). The seed-separating brush (205) is arranged perpendicularly to the reinforced material suction plate (101).

5. A pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 1, characterized in that: The seed box (301) has several seed compartments (303) arranged side by side inside, each connected to the top of a corresponding seed box insert (302).

6. A pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 3, characterized in that: One end of the flange shaft (105) passes through the bushing (207) and extends to the outside of the reinforced hollow seed housing (201). A drive shaft (4) is provided in the middle of the flange shaft (105).

7. A pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 2, characterized in that: The negative pressure chamber (501) is connected to an external negative pressure system through a negative pressure channel (504), and the positive pressure chamber (502) is connected to an external positive pressure system through a positive pressure channel (503).

8. A pneumatic seed metering device with adjustable seed quantity for rapid seed change according to claim 1, characterized in that: Both sides of the surface of the seed supply channel (203) are provided with sliding plates (204) for guiding the seed box assembly (3), and the seed box (301) is slidably connected to the sliding plates (204).

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