A mobile adsorption type seed metering device

Abstract

The present invention discloses a mobile adsorption type seeding device, comprising a housing, a seed scooping mechanism, a seed flow mechanism and a seeding disk. The housing is provided with a seed scooping mechanism and a seeding disk for rotation. The seeding disk divides the housing into a seed chamber and an air chamber. The seed scooping mechanism is located in the seed chamber. The housing is provided with a seed inlet above and a seed outlet below. The seed outlet is located below the air chamber. The seeding disk is uniformly distributed with a plurality of adsorption areas along the circumference. The adsorption areas are provided with a plurality of seed suction holes. The seed suction holes are all connected to the air chamber. The air chamber is connected to a negative pressure mechanism. The seed scooping mechanism can scoop seeds to the seed suction holes. The seeding disk can be disassembled and replaced. The present invention uses the scooping mechanism to put the seeds of the population into a moving state, which is convenient for accurate adsorption. It changes the traditional static adsorption method and can avoid the phenomenon of multiple adsorptions in one hole due to static accumulation of seeds. The seeding disk with different seed suction holes can also be replaced according to agronomic requirements to achieve precision sowing, thereby solving the difficulty of small-size seeds being difficult to accurately sow.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, in particular to a flow adsorption type seed metering device. Background Art

[0002] Small-size seed crops primarily refer to seeds with an average diameter of less than 3mm. Seeders are categorized by their operating principle into two types: mechanical and pneumatic. When using a mechanical seed meter to sow small-size seeds, too small a hole can easily cause clogging and damage, while too large a hole can hinder precision seeding. Pneumatic seed meters are less sensitive to small-size seeds, making it difficult to control precise seeding.

[0003] Traditional seeding techniques suffer from high sowing costs and subsequent manual thinning expenses, necessitating the development of precision seeding for small-size seeds. Currently, there are few seedmeters suitable for small-size seeds, and their qualification rates are low. Addressing the issue of precision seeding for small-size seeds remains a technical challenge. Therefore, a seedmeter suitable for precision seeding of small-size seeds is urgently needed to promote the mechanization of small-size crop operations. Summary of the Invention

[0004] The purpose of the present invention is to provide a flow adsorption type seed metering device to solve the problems existing in the above-mentioned prior art and enable small-size seeds to be precisely metered by flow adsorption.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a mobile adsorption type seed metering device, comprising a casing, a seed scooping mechanism, a seed flow mechanism and a seeding disk. The seed scooping mechanism and the seeding disk are rotatably arranged in the casing, and the seeding disk divides the casing into a seed chamber and an air chamber. The seed scooping mechanism is located in the seed chamber, a seed inlet is provided above the casing, and a seed outlet is provided below the casing, and the seed outlet is located below the air chamber. The seeding disk is evenly distributed with a number of adsorption areas along the circumference, and a number of seed suction holes are provided on the adsorption areas. The seed suction holes are all connected to the air chamber, and the air chamber is used to be connected to a negative pressure mechanism. The seed scooping mechanism can lift the seeds to the seed suction holes, and the seeding disk can be disassembled and replaced.

[0007] Preferably, the casing includes the seed chamber shell, the seed flow retaining ring and the air chamber shell which are sealed and connected in sequence, the seed flow retaining ring includes an annular shell, a seed flow baffle and a slide groove, the seed flow baffle and the slide groove are provided on the side wall of the annular shell, the slide groove is provided on the bottom of the seed flow baffle, the seed flow baffle can make the seeds approach the adsorption area and stand obliquely in the slide groove, the air chamber shell and the annular shell are correspondingly provided with a seed outlet groove, the seed outlet groove can be spliced into the seed outlet, and the seed chamber shell is provided with the seed inlet.

[0008] Preferably, the bottom surface of the seed flow baffle and the chute are both arranged at an angle of 25° to 60° to the horizontal plane, and a seed flow slope is provided on the side of the seed flow baffle close to the seed plate, and the angle between the seed flow slope and the vertical plane is 30° to 60°. The seed flow baffle is arranged in the vertical plane and is located below the horizontal scoop in the seed scooping mechanism; the seed suction holes are arranged in a row and the connecting line can be perpendicular to the seed flow slope.

[0009] Preferably, the size of the seed flow slope is larger than the size of the adsorption area, and the depth of the chute is 0.6mm~1.2mm; a reflux slope is provided at the bottom of the annular shell, so that the seeds can slide along the reflux slope into the seed chamber shell after sliding along the chute; a chamber baffle is provided at an angle at the bottom of the seed chamber shell.

[0010] Preferably, the air chamber is an arc-shaped air chamber with a central angle of -60° to 180°, and the arc-shaped air chamber can cover the adsorption area located at a central angle of -60° to 180°. The cross-section of the arc-shaped air chamber is semicircular and is connected to an air outlet. One end of the arc-shaped air chamber is arranged corresponding to the flow baffle, and the seed outlet is arranged below the other end.

[0011] Preferably, the seed scooping mechanism includes a seed scooping turntable and a scooping spoon. A plurality of scooping spoons are evenly distributed on the circumference of the seed scooping turntable. The scooping spoon includes three side surfaces and a seed cleaning slope. The seed cleaning slope is the bottom surface of the scooping spoon. The seed cleaning slope is connected to the end of one of the side surfaces and the included angle is 45° to 80°. The seed cleaning slope can cause the seeds to fall along the slope when the scooping spoon is rotated to a horizontal position.

[0012] Preferably, the number of the scoops corresponds to the number of the adsorption zones, the angle between the scoops and the corresponding adsorption zones is 0° to 20°, and the diameter of the scoops on the seed scooping turntable is smaller than the diameter of the seed chamber.

[0013] Preferably, the middle part of the casing is rotatably connected to a transmission shaft, and a connecting seat for adjusting the position of a scoop is provided on the transmission shaft, and both ends of the connecting seat are detachably connected to the seed plate and the seed scoop turntable respectively.

[0014] Preferably, there are two groups of adjustment holes on one end of the seed scooping turntable and the connecting seat, and the two groups of adjustment holes are symmetrically arranged about the center of the transmission shaft. Each group of connecting holes includes four positioning holes distributed at equal central angles, and the other end of the connecting seat is provided with a bolt hole connected to the seed disc.

[0015] Preferably, the thickness of the adsorption area is 0.1 mm to 0.3 mm, the aperture of the seed suction hole is 0.5 mm to 1.2 mm; and an air pressure sensor is provided in the air chamber.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention utilizes a scooping mechanism to put the seeds of a population into motion, which facilitates precise adsorption and changes the traditional static adsorption method. It can avoid the phenomenon of multiple adsorptions in one hole due to static accumulation of seeds. The seeding tray with different seed absorption holes can also be replaced according to agronomic requirements to achieve precise sowing, thereby solving the difficulty of precise sowing of small-particle seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0019] Figure 1 Schematic diagram of the explosion structure of the mobile adsorption type seed metering device in an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the air chamber shell in an embodiment of the present invention;

[0021] Figure 3 This is a structural diagram of a seeding tray in an embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of a connecting base in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the flow retaining ring in an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the seed chamber shell in an embodiment of the present invention;

[0025] Figure 7 This is a structural diagram of a scooping mechanism in an embodiment of the present invention;

[0026] Figure 8 This is a schematic structural diagram of a scoop in an embodiment of the present invention;

[0027] Figure 9 A schematic diagram of the partial structure of the seed baffle and the chute in an embodiment of the present invention;

[0028] Among them: 1-seed disc, 2-connecting seat, 3-seeding turntable, 4-seed chamber shell, 5-air chamber shell, 6-air outlet, 7-adsorption area, 8-seed suction hole, 9-transmission shaft hole, 10-connecting seat fixing hole, 11-arc air chamber, 12-positioning hole, 13-bolt hole, 14-seed inlet, 15-return slope, 16-seed outlet groove, 17-ring shell, 18-seed flow baffle, 19-casing connection hole, 20-seeding turntable mounting hole, 21-scoop, 23-seed cleaning slope, 24-seed flow slope, 25-chute, 26-seed chamber baffle. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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.

[0030] The purpose of the present invention is to provide a flow adsorption type seed metering device to solve the problems existing in the prior art and enable small-size seeds to be precisely metered by flow adsorption.

[0031] 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.

[0032] like Figures 1 to 9 As shown: This embodiment provides a flow adsorption type seed metering device, including a casing, a seed scooping mechanism, a seed flow mechanism and a seed plate 1. The seed scooping mechanism and the seed plate 1 are rotatably arranged in the casing, and the seed plate 1 divides the casing into a seed chamber and an air chamber. The seed scooping mechanism is located in the seed chamber, a seed inlet 14 is provided above the casing, and a seed outlet is provided below the casing, and the seed outlet is located below the air chamber. The seed plate 1 is evenly distributed with a number of adsorption areas 7 along the circumference, and a number of seed suction holes 8 are provided on the adsorption area 7. The seed suction holes 8 are all connected to the air chamber, and the air chamber is used to connect with the negative pressure mechanism. The seed scooping mechanism can lift the seeds to the seed suction holes 8, and the seed plate 1 can be disassembled and replaced.

[0033] Preferably, the casing in this embodiment includes a seed chamber shell 4, a seed flow retaining ring and an air chamber shell 5 that are sealed and connected in sequence, mainly the casing connection hole 19 is connected with bolts, the seed flow retaining ring includes an annular shell 17, a seed flow baffle 18 and a slide 25, the side wall of the annular shell 17 is provided with a seed flow baffle 18 and a slide 25, the bottom of the seed flow baffle 18 is provided with a slide 25, the seed flow baffle 18 can make the seeds close to the adsorption area 7 and stand obliquely in the slide 25, the air chamber shell 5 and the annular shell 17 are correspondingly provided with a seed outlet groove 16, the seed outlet groove 16 can be spliced into a seed outlet, and the seed chamber shell 4 is provided with a seed inlet 14. Among them, the bottom surface of the seed flow baffle 18 and the chute 25 are both set at an angle of 25° to 60° with the horizontal plane. A seed flow slope 24 is set on the side of the seed flow baffle 18 close to the seed plate 1. The angle between the seed flow slope 24 and the vertical plane is 30° to 60°, which can be determined according to the flow effect of the seeds. The preferred angle is 60°. The seed flow baffle 18 is set in the vertical plane and is located below the horizontal scoop 21 in the seed scooping mechanism, so that the seeds in the scoop 21 can slide directly onto the seed clearing slope 23 of the seed flow baffle 18 for arrangement. The seed suction holes 8 are arranged in a row and the connecting line can be perpendicular to the seed flow slope 24, which can ensure that the suction holes pass through the seed filling area separately in sequence. Figure 9 As shown, the chute 25 is composed of two inclined planes connected in sequence, mainly to force the seeds to approach the seed plate 1. The seed flow baffle 18 and the chute 25 of this embodiment are both arranged on a U-shaped part with a certain height, forming a circumferentially arranged seed flow inclined plane 24 as a whole. The seed flow baffle 18 is located at the highest point and can be flush with the horizontal radius of the seed chamber. An air pressure sensor is provided in the air chamber, which can adjust the air chamber pressure according to the pressure change to achieve transient pressure stabilization. The seed flow state uses the seed's own gravity to make it slide along the inclined plane. When the seed moves, it will be arranged and moved in an orderly manner on the inclined plane. When the seed passes through the seed suction hole 8, it can be accurately adsorbed by the seed suction hole 8.

[0034] The seed flow slope 24 is larger than the adsorption zone 7, ensuring that at least one adsorption zone 7 can complete seed adsorption at the seed cleaning slope 23. The depth of the chute 25 is 0.6mm to 1.2mm, facilitating the sideways sliding of the seeds in the chute 25, allowing each seed to be clearly separated. The depth of the chute 25 can be selected according to the seed size. For example, a depth of 0.8mm can be selected for quinoa seeds. A return flow slope 15 is provided at the bottom of the annular shell 17, allowing the seeds to slide along the return flow slope 15 into the seed chamber shell 4 after sliding along the chute 25. This allows unadsorbed seeds to flow back into the seed chamber, waiting to be scooped up again by the scoop 21. The seed cleaning slope 23 is 5mm to 15mm wide and is 1mm to 2mm away from the seed plate, forcing the flat surface of the seeds to slide along the slope for at least the length of the adsorption zone 7. The seed flow slope 24 and the seed plate 1 together form a seed filling zone, where the seeds are adsorbed in a flowing state (also known as a seed absorption zone). The bottom of the seed chamber shell 4 is tilted inward and provided with a chamber baffle 26. The seed chamber baffle 26 is set in a semicircular shape to match the shape of the seed chamber shell 4. It can gather seeds at the position where the scoop 21 passes, making it easier for the scoop 21 to scoop seeds. The baffle and the area behind the seed flow baffle 18 form a seed scooping area. The seed filling area and seed suction area are both located on the chute 25 on the seed flow baffle 18.

[0035] Preferably, the air chamber in this embodiment is an arc-shaped air chamber 11 with a central angle of -60° to 180°. The arc-shaped air chamber 11 can cover the adsorption area 7 located at a central angle of -60° to 180°. The cross-section of the arc-shaped air chamber 11 is semicircular and is connected to an air outlet 6. One end of the arc-shaped air chamber 11 is arranged corresponding to the seed flow baffle 18, and a seed outlet is arranged below the other end. The seed outlet is the seeding area. After the seeds are scooped onto the seed flow slope 24, the seeds slide on the slope by their own gravity, and the seed suction holes 8 can adsorb the flowing seeds. When the seeds rotate to the end (seed outlet) of the arc-shaped air chamber 11 with the seed plate 1, the seeds fall directly due to gravity (no longer subject to adsorption force), thereby achieving precise seeding of small-particle seeds.

[0036] The seed scooping mechanism of the present embodiment preferably includes a seed scooping turntable 3 and a scooping spoon 21. Several scooping spoons 21 are evenly distributed on the circumference of the seed scooping turntable 3. The scooping spoon 21 includes three side surfaces and a seed cleaning slope 23. The seed cleaning slope 23 is the bottom surface of the scooping spoon 21, and forms a cubic dustpan shape with the three side surfaces. The scooping spoon 21 is loosely matched with the seed flow baffle 18. When scooping seeds, the seed flow baffle 18 is equivalent to the top plate of the scooping spoon 21, so that the scooping spoon 21 leaves only one seed entrance, which is convenient for scooping more seeds into the seed filling area. When the scooping spoon 21 enters the seed filling area without the effect of the baffle, the seeds quickly separate from the scooping spoon 21, and the seed cleaning slope 23 is connected to the end of one of the side surfaces and the angle is 45° to 80°. In this embodiment, 60° is preferred, and there is no plate blocking, so that the seeds can quickly separate from the scooping spoon 21, and the seeds are scooped into the seed flow mechanism, and then the seeds are sent to the seed filling area. The seed cleaning slope 23 can make the seeds fall along the slope when the scooping spoon 21 is rotated to a horizontal position. The diameter of the scoop 21 on the seed scooping turntable 3 is smaller than the diameter of the seed chamber, so as to avoid the scoop 21 from scooping up excess seeds with the assistance of the edge of the seed chamber, thereby affecting the scooping amount. Figure 8 The central scoop 21 also includes a through-hole at the bottom for adjusting the angle of the seed-clearing slope 23, ensuring that seeds do not accumulate. This allows seeds to be scooped and quickly released from the scoop 21 by gravity upon reaching the seed filling area. The number of scoops 21 corresponds to the number of suction zones 7, ensuring a stable and continuous seed flow as the seed suction holes 8 pass through the seed filling area. In this embodiment, 18 scoops 21 are arranged around the circumference of the seed scooping disc, corresponding to the number of suction zones 7 on the seed dispensing disc 1, ensuring a continuous supply of seeds to the suction zones 7. The diameter of the seed scooping turntable 3 is smaller than the diameter of the seed chamber, preventing the scoop 21 from scooping excess seeds with the assistance of the chamber edge, which would affect the scooping amount and seed spillage. The offset angle between the scoop 21 and the corresponding suction zone 7 ranges from 0° to 20° and can be adjusted based on the rotational speed and scooping amount required via the scoop 21 position adjustment connector 2, ensuring consistent seed supply between the scoop 21 and the corresponding suction zone 7. The seed cleaning slope 23 is to facilitate the seeds to quickly approach the seed plate 1 after they are separated from the scoop 21; the chute 25 can facilitate the seeds to slide down, thereby forming a seed flow.

[0037] Preferably, the middle part of the housing in this embodiment is rotatably connected to a transmission shaft, and a connecting seat 2 for adjusting the position of a scoop 21 is provided on the transmission shaft. The two ends of the connecting seat 2 are detachably connected to the seeding disk 1 and the seeding turntable 3. Preferably, there are two groups of adjustment holes on one end of the seeding turntable 3 and the connecting seat 2. The transmission shaft holes 9 on the seeding disk 1 and the connecting seat 2 are both shaft holes with two side sections. The seeding disk 1 is also provided with a connecting seat fixing hole 10. The seeding turntable mounting hole 20 through which the transmission shaft passes is a circular hole, which is convenient for realizing the relative rotation of the transmission shaft. The two groups of adjustment holes are symmetrically arranged about the center of the transmission shaft. Each group of connecting holes includes four positioning holes 12 distributed at equal central angles, which is convenient for adjusting the misalignment angle of the scoop 21 on the seeding turntable 3 relative to the adsorption area 7. The other end of the connecting seat 2 is provided with a bolt hole 13 connected to the seeding disk 1. The thickness of the adsorption area 7 is 0.1mm to 0.3mm, which is convenient for drilling. In this embodiment, the adsorption area 7 is made of a copper disc. The diameter of the seed suction hole 8 is 0.5mm to 1.2mm, preferably 0.8mm. In this embodiment, the seed plate 1 fits tightly with the air chamber and has a gap with the seed chamber. The seed suction holes 8 are of two, three, or four types. The seed plate 1 can be replaced according to agronomic requirements.

[0038] When the flow-absorbing seed metering device of this embodiment is in operation, the seeding shaft is driven to rotate the seeding disc 1 and the seed scooping mechanism connected to the seeding disc 1 clockwise. In the seed scooping area, the scooping spoon 21 and the seed chamber baffle 26 work together to scoop up the seeds in the seed chamber 25. As the scooping mechanism rotates, the seeds are delivered to the seed filling area. In the seed filling area, the seeds in the scooping spoon 21, without the action of the seed chamber baffle 26, slide down the seed clearing slope 23 of the scooping spoon 21 by their own gravity to the seed flow slope 24, and then slide down the chute 25, causing the seeds to slide along the seed flow slope 24, eventually forming a seed flow state. The other side of the seeds is tightly attached to the seeding disc 1. When the seed suction holes 8 on the seeding disc 1 pass through the seed flow slope 24, and the seed suction holes 8 on the suction area 7 also pass through the seed flow slope 24, the seeds are accurately sucked, completing the suction. The seeds that are not sucked return to the seed chamber 4 through the return slope 15. Then, under the rotation of the seeding disc 1, the seeds on the seed suction holes 8 are sent to the seeding area. Since there is no negative pressure suction in the seeding area, the seeds will vertically fall away from the seeding disc 1 under their own gravity and finally be discharged from the seeding port 16 to complete the seeding.

[0039] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A mobile adsorption type seed metering device, characterized by: The scooping mechanism comprises a casing, a seed scooping mechanism, a seed flow mechanism and a seed discharging disc, wherein the scooping mechanism and the seed discharging disc are rotatably arranged in the casing, the seed discharging disc divides the casing into a seed chamber and an air chamber, the scooping mechanism is located in the seed chamber, a seed inlet is provided above the casing, a seed outlet is provided below the casing, the seed outlet is located below the air chamber, a plurality of adsorption areas are uniformly distributed on the seed discharging disc along the circumference, a plurality of seed suction holes are provided on the adsorption areas, the seed suction holes are all communicated with the air chamber, the air chamber is used to be connected to a negative pressure mechanism, the scooping mechanism can scoop up seeds to the seed suction holes, and the seed discharging disc can be disassembled and replaced; The casing includes the seed chamber shell, the seed flow retaining ring and the air chamber shell which are sealed and connected in sequence. The seed flow retaining ring includes an annular shell, a seed flow baffle and a slide groove. The seed flow baffle and the slide groove are provided on the side wall of the annular shell. The slide groove is provided on the bottom of the seed flow baffle. The seed flow baffle can make the seeds approach the adsorption area and stand obliquely in the slide groove. The air chamber shell and the annular shell are correspondingly provided with a seed outlet groove. The seed outlet groove can be spliced into the seed outlet. The seed chamber shell is provided with the seed inlet.

2. The mobile adsorption type seed metering device according to claim 1, characterized in that: The bottom surface of the seed flow baffle and the slide groove are both arranged at an angle of 25° to 60° to the horizontal plane. A seed flow slope is provided on the side of the seed flow baffle close to the seed plate. The angle between the seed flow slope and the vertical plane is 30° to 60°. The seed flow baffle is arranged in the vertical plane and is located below the horizontal scoop in the seed scooping mechanism; the seed suction holes are arranged in a row and the connecting line can be perpendicular to the seed flow slope.

3. The mobile adsorption type seed metering device according to claim 2, characterized in that: The size of the seed flow slope is larger than that of the adsorption area, and the depth of the chute is 0.6mm~1.2mm; a reflux slope is provided at the bottom of the annular shell, so that the seeds can slide along the reflux slope into the seed chamber shell after sliding along the chute; a chamber baffle is provided at an angle at the bottom of the seed chamber shell.

4. The mobile adsorption seed metering device according to claim 1, characterized in that: The air chamber is an arc-shaped air chamber with a central angle of -60° to 180°. The arc-shaped air chamber can cover the adsorption area located at a central angle of -60° to 180°. The cross-section of the arc-shaped air chamber is semicircular and is connected to an air outlet. One end of the arc-shaped air chamber is arranged corresponding to the flow baffle, and the seed outlet is arranged below the other end.

5. The mobile adsorption seed metering device according to claim 1, characterized in that: The seed scooping mechanism includes a seed scooping turntable and a scooping spoon. A plurality of scooping spoons are evenly distributed on the circumference of the seed scooping turntable. The scooping spoon includes three side surfaces and a seed cleaning slope. The seed cleaning slope is the bottom surface of the scooping spoon. The seed cleaning slope is connected to the end of one of the side surfaces and the angle is 45° to 80°. The seed cleaning slope can cause the seeds to fall along the slope when the scooping spoon is rotated to a horizontal position.

6. The mobile adsorption seed metering device according to claim 5, characterized in that: The number of the scoops corresponds to the number of the adsorption areas, the angle between the scoops and the corresponding adsorption areas is 0° to 20°, and the diameter of the scoops on the seed scooping turntable is smaller than the diameter of the seed chamber.

7. The mobile adsorption seed metering device according to claim 5, characterized in that: The middle part of the casing is rotatably connected to a transmission shaft, and a connecting seat for adjusting the position of a scoop is provided on the transmission shaft. The two ends of the connecting seat are detachably connected to the seed plate and the seed scooping turntable respectively.

8. The mobile adsorption seed metering device according to claim 7, characterized in that: There are two groups of adjustment holes on one end of the seed scooping turntable and the connecting seat. The two groups of adjustment holes are symmetrically arranged about the center of the transmission shaft. Each group of connecting holes includes four positioning holes distributed at equal central angles. The other end of the connecting seat is provided with a bolt hole connected to the seed disc.

9. The mobile adsorption seed metering device according to claim 1, characterized in that: The thickness of the adsorption area is 0.1 mm to 0.3 mm, and the aperture of the seed suction hole is 0.5 mm to 1.2 mm; an air pressure sensor is provided in the air chamber.

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