Air pressure type flexible bowl seeder

Abstract

The invention discloses an air pressure type flexible bowl seeder. The seeder comprises a bowl roller, a seed supply box and a seed cleaning brush, the bowl roller is arranged at a seed outlet in the lower end of the seed supply box, a flexible seed containing bowl is arranged on the bowl roller, seed containing and sowing are achieved along with rotation of the rotating shaft, redundant seeds are brushed out through the seed cleaning brush, and sowing is completed. Wherein the seed cleaning brush is rotationally arranged right above the bowl roller, and the seed cleaning brush and the bowl roller rotate clockwise. The seeder provided by the invention effectively avoids the problems that a seed suction hole of an air suction type seeder is easy to block and a seed protection element of a bowl hole type seeder damages seeds, does not need a seed protection structure, does not damage the seeds, and has a relatively high practical value.

Description

Technical Field

[0001] The invention relates to the field of seeding machines and tools, and in particular to a pneumatic flexible bowl seeding device. Background Art

[0002] At present, there are usually two types of precision seeding, one is the air-suction seeder and the other is the hole-type seeder. Both types are arranged on the cylindrical surface of a cylinder with seed suction holes or seed filling holes to achieve the three processes of precise seed collection, seed holding, and seed placement to sow seeds to the specified position. The air-suction seeder forms a pressure difference between the inside and outside of the seed suction holes through the vacuum of the enclosed space on the back of the seed suction holes arranged on the cylindrical surface, and adsorbs the seeds on the seed suction holes, and adsorbs the seeds in the seed filling area. It operates under the pressure difference, keeps the suction seeds through the seed holding area, reaches the seed placement area to release the negative pressure, and releases the seeds to achieve single seed sowing. The size of the suction hole is determined according to the type and size of the sucked seeds. The hole-type seeder is a cylindrical surface with holes corresponding to the seeds arranged, and the size of the holes can be set according to the size, shape, and sowing amount of the seeds. During the sowing process, in the seed filling area, seeds are filled into the holes and excess seeds are removed. When passing through the seed holding area, a seed protection element covers the holes to prevent the seeds from falling out of the holes. In the seed placing area, the holes are separated from the cover of the seed protection element, and the seeds are separated from the holes under the action of gravity and sown to the corresponding positions, achieving precision sowing.

[0003] In reality, both precision seeders have some problems that affect their practical applications. The air-suction seeder, due to the adsorption effect of its seed holes, not only absorbs seeds, but also other substances, so that impurities in the seeds (such as seed coats, micro-stems, root buds of germinated seeds, etc.) are also adsorbed and block the seed holes, causing leakage during sowing and empty holes. In particular, after a long period of sowing, a large number of seed holes will be blocked, and sowing cannot be carried out. This has always been one of the reasons that affect the widespread application of air-suction seeders; the hole-type seeder, because the seed protection element covering the hole and the hole roller have relative movement, the seed protection element damages the seeds in the hole, causing the seeds to be damaged, broken and stuck, affecting the sowing quality. Summary of the invention

[0004] The purpose of the present invention is to provide a seeder with a flexible hole bowl seeding and air pressure seed holding method. After the seeds are taken from the bowl, the bowl is squeezed by the external air pressure of the bowl so that the seeds in the bowl are clamped and fixed, so that the seeds are kept in the bowl in the seed holding area, thereby avoiding the problem of clogging of the seed suction hole of the air suction seeder and the problem of damage to the seeds by the seed protection element of the bowl hole seeder.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a pneumatic flexible bowl seeder, which comprises a bowl roller, a seed supply box and a seed cleaning brush. The seed supply box has an opening at the upper end and an opening is arranged on one side of the bottom wall at the lower end, and the opening is a seed discharge port; the bowl roller is cylindrical and is rotatably arranged at the seed discharge port at the lower end of the seed supply box; the seed cleaning brush is a rotating long-haired brush rotatably arranged just above the bowl roller, and the seed cleaning brush and the bowl roller both rotate in the same direction, preferably clockwise;

[0006] The bowl roller comprises a roller body, which is cylindrical, and a plurality of axial through holes are evenly opened on the outer circumference of the roller body along the central axis direction, and a plurality of radial holes are evenly opened on each axial through hole along the axial length direction of the roller body, and the depth of the radial hole is extended from the outer surface of the bowl roller to the center direction thereof, and a bottom surface is formed after penetrating the axial through hole;

[0007] It also includes a rotating shaft, which is located on the central axis of the roller body, has a length greater than that of the roller body, and is fixedly connected to the roller body; wherein the center of a circle formed by a line connecting the centers of the axial through holes on each cross section of the roller body is the same as the center of the cross section of the rotating shaft;

[0008] Also included is a flexible seed bowl, which is a bowl-shaped body with an open top, and is fixed to the bottom surface with the opposite end of the open end, and the outer aperture of the open end is the same as the outer aperture of the radial hole, and is tightly fitted and embedded in the radial hole for holding seeds, and the side wall of the flexible seed bowl can be deformed after being compressed;

[0009] It also includes an end cover and a sealing cover, which are circular plates inserted on the rotating shaft, respectively adapted to the roller body, and cooperate with the sealing cover at both ends of the roller body. The sealing cover rotates with the rotating shaft. The end cover is fixed on the frame of the seeder and does not rotate with the rotating shaft.

[0010] Preferably, an annular groove is formed at one end of the end cover, one end of the roller body is embedded in the annular groove, and a closed annular space is formed between the end cover and the end surface of the roller body, and the annular space is connected to each axial through hole;

[0011] The end cover is provided with an air hole connected to the air compressor and a vent hole connected to the outside world; the end cover also includes two ribs, the width of which is greater than the diameter of the axial through hole. The two ribs are radially arranged in the annular space to separate the annular space into two independent first and second areas; the air hole is located in the first area, and the first area is pressurized into a high-pressure area by the air compressor; the vent hole is located in the second area, so that the second area connected to the outside world is a normal pressure area.

[0012] Preferably, a sealing mechanism is also provided on the annular surface where the roller body contacts the end cover, so that the contact surface between the roller body and the end cover is sealed when the roller body rotates, and a sealing strip or the like may be selected.

[0013] Preferably, the flexible seed bowl provided by the present invention can be made of deformable flexible materials such as rubber or silicone. The air pressure generated by the air compressor can deform the flexible seed bowl to hold seeds, which can effectively protect the seeds from damage.

[0014] The seeder provided by the present invention has the following advantages:

[0015] The seeder of the present invention can keep the seeds in the bowl by squeezing the bowl when taking seeds from the bowl, which can effectively avoid the problem of clogging of the seed suction holes of the air-suction seeder and the problem of damage to the seeds by the seed protection elements of the bowl hole seeder, and has a simple and compact structure.

[0016] At the same time, it can automatically clean impurities trapped in the seed suction hole while sucking and discharging seeds, solve the blockage problem, and minimize missed and insufficient seeds. Not only does it sow seeds evenly, but it also enables the seeder to continuously and stably maintain the highest efficiency operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic cross-sectional view of the internal structure of the seeder provided in Example 1 of the present invention when working.

[0018] Figure 2 It is a cross-sectional view of the bowl roller 1 in the seeder provided in Example 1 of the present invention.

[0019] Figure 3 It is a cross-sectional schematic diagram of the roller body 11 in the seeder provided in Example 1 of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the end cover 14 in the seeder provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0022] Example 1

[0023] The present invention provides a pneumatic flexible bowl seeder, Figures 1 to 4The seeder is provided with a bowl roller 1, a seed supply box 2 and a seed cleaning brush 3. The upper end opening of the seed supply box 2 is used to hold seeds, and an opening is arranged on one side of the bottom wall of the lower end of the seed supply box 2, and the opening is a seed discharge port; the bowl roller 1 is cylindrical and is arranged at the seed discharge port at the lower end of the seed supply box 2, and the bowl roller 1 includes a hollow cylindrical roller body 11, and a plurality of axial through holes 111 are evenly arranged on the outer circumference of the roller body 11 along the central axis direction, and a plurality of radial holes 112 are evenly arranged on each axial through hole 111 along the axial length direction, and the depth of the radial hole 112 extends from the outer surface of the bowl roller 1 to the center of the circle, and a bottom surface 113 is formed after penetrating the axial through hole 111; the bowl roller 1 also includes a through hole 112. The rotating shaft 13 passes through the central axis of the roller body 11, wherein the center of the circle formed by the line connecting the centers of the axial through holes 111 on each cross section of the roller body 11 is the same as the center of the cross section of the rotating shaft 13; the bowl roller 1 also includes a flexible seed bowl 12, which is a bowl-shaped body with an open top, and is fixed to the bottom surface 113 with the opposite end of the open end, and the outer aperture of the open end is the same as the outer aperture of the radial hole 112, and can be fitted into the radial hole 112 for seeding, and the side wall of the flexible seed bowl 12 can be deformed after being compressed; the bowl roller 1 also includes an end cap 14 and a cover 15 adapted to the two ends of the roller body 11. The length of the rotating shaft 13 is greater than the length of the roller body 11, and is fixedly connected to the roller body 11.

[0024] The end cap 14 and the sealing cover 15 are circular plates inserted on the rotating shaft 13 and matched with the sealing covers at both ends of the roller body 11. The sealing cover 15 rotates with the rotating shaft 13, and the end cap 14 is fixed on the frame of the seeder and does not rotate with the rotating shaft 13.

[0025] refer to Figure 2 and Figure 4 An annular groove 143 is provided at one end of the end cover 14, and one end of the roller body 11 is embedded in the annular groove 143. A closed annular space connected to each axial through hole 111 is formed between the end cover 14 and the end surface of the roller body 11. An air hole 141 connected to the air compressor and an air vent 142 connected to the outside are also provided in the end cover 14. The end cover 14 also includes two ribs 144. The width of the rib 144 is greater than the diameter of the axial through hole 111. The two ribs are radially arranged in the annular space to separate the annular space into two independent first areas 145 and second areas 146. The air hole 141 and the air vent 142 are respectively located in the first area 145 and the second area 146, and the first area 145 and the second area 146 are respectively divided into a high pressure area and a normal pressure area.

[0026] A sealing strip is also provided on the annular surface where the roller body 11 contacts the end cover 14 , so that the contact surface between the roller body 11 and the end cover 14 is in a sealed state when the roller body 11 rotates.

[0027] refer to Figure 1 The seed cleaning brush 3 is a rotating long-haired brush arranged just above the bowl roller 1. Its rotation direction is the same as that of the bowl roller 1, and both rotate clockwise. The seed cleaning brush 3 is used to clean out excess seeds in the flexible seed bowl 12 so that the flexible seed bowl 12 can hold just one seed.

[0028] The flexible seed holding bowl 12 can be made of materials such as rubber and silicone.

[0029] The working mode of the seeder provided by the present invention is as follows: the bowl roller 1 rotates with the rotating shaft 13, and the seeds enter the flexible seed bowl 12 of the bowl roller 1 from the seed discharge port. When the flexible seed bowl 12 containing seeds contacts the seed cleaning brush 3, the seed cleaning brush 3 will brush out the seeds in the flexible seed bowl 12, so that only one seed is retained. At this time, the flexible seed bowl 12 is connected to the first area 145, and the pressure in the high-pressure area will cause the flexible seed bowl 12 to deform, so that it clamps the retained seeds. The clamped seeds rotate with the bowl roller 1, and when the flexible seed bowl 12 is connected to the second area 146, the pressure is released to restore the flexible seed bowl 12 to its original state. At this time, the opening of the flexible seed bowl 12 faces downward, and the seeds are released and sown. As the rotating shaft 13 rotates, the axial through hole 111 will continuously connect with the high-pressure area or the normal-pressure area, so that the flexible seed bowl 12 will repeatedly change in the state of being deformed by pressure. Each flexible seed bowl 12 holding seeds will change once every rotation, and sowing can be achieved in this reciprocating manner.

[0030] From the above, it can be seen that the seeder provided by the present invention does not require a seed protection structure and will not damage the seeds. At the same time, the structural design adopted by the seeder will not cause empty holes and missing seeds due to blockage of the seed holding structure, and has high practical value.

[0031] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A pneumatic flexible bowl seeder, characterized in that: The seeder comprises a bowl roller (1), a seed supply box (2) and a seed cleaning brush (3); the seed supply box (2) has an opening at the top and an opening at one side of the bottom wall at the bottom, the opening being a seed discharge port; the bowl roller (1) is cylindrical and is rotatably arranged at the seed discharge port at the bottom end of the seed supply box (2); the seed cleaning brush (3) is a rotating long-haired brush rotatably arranged just above the bowl roller (1), and the seed cleaning brush (3) and the bowl roller (1) both rotate in the same direction; Wherein, the bowl roller (1) comprises: A roller body (11), the roller body (11) is cylindrical, a plurality of axial through holes (111) are evenly provided on the outer circumference of the roller body (11) along the central axis direction, each axial through hole (111) is also evenly provided with a plurality of radial holes (112) along the axial length direction of the roller body (11), the depth of the radial hole (112) extending from the outer surface of the bowl roller (1) towards the center of the bowl roller (1), and forming a bottom surface (113) after penetrating the axial through hole (111); A rotating shaft (13), the rotating shaft (13) being located on the central axis of the roller body (11), the length of the rotating shaft (13) being greater than the length of the roller body (11), and being fixedly connected to the roller body (11); wherein the center of a circle formed by a line connecting the centers of the axial through holes (111) on each cross section of the roller body (11) is the same as the center of the cross section of the rotating shaft (13); A flexible seed bowl (12), the flexible seed bowl (12) is a bowl-shaped body with an open top, and is fixed to the bottom surface (113) with the opposite end of the open end, the outer aperture of the open end is the same as the outer aperture of the radial hole (112), and is tightly fitted into the radial hole (112) for holding seeds, and the side wall of the flexible seed bowl (12) can be deformed after being compressed. The end cover (14) and the sealing cover (15) are circular plates that are sleeved on the rotating shaft (13), and are respectively adapted to the roller body (11) and are matched with the sealing covers at both ends of the roller body (11). The sealing cover (15) rotates with the rotating shaft (13), and the end cover (14) is fixed on the frame of the seeder and does not rotate with the rotating shaft (13).

2. The seeder according to claim 1, characterized in that: An annular groove (143) is formed at one end of the end cover (14), and one end of the roller body (11) is embedded in the annular groove (143). A closed annular space is formed between the end cover (14) and the end surface of the roller body (11), and the annular space is communicated with each axial through hole (111); The end cover (14) is provided with an air hole (141) connected to the air compressor and an air vent (142) connected to the outside. The end cover (14) further comprises two ribs (144), which are radially arranged in the annular space to separate the annular space into two mutually independent first areas (145) and second areas (146), and the width of the ribs (144) is greater than the diameter of the axial through hole (111); The air hole (141) is located in the first area (145), and the first area (145) is pressurized into a high-pressure area by an air pump; the air hole (142) is located in the second area (146), so that the second area (146) connected to the outside is a normal pressure area.

3. The seeder according to claim 2, characterized in that: A sealing mechanism is provided on the annular surface where the roller body (11) contacts the end cover (14), so that the contact surface between the roller body (11) and the end cover (14) is in a sealed state when the roller body (11) rotates.

4. The seeder according to any one of claims 2 to 3, characterized in that: The flexible seed-holding bowl (12) is made of a deformable flexible material, and the flexible seed-holding bowl (12) is deformed by air pressure to hold seeds.

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