Air pressure flexible bowl seeder

Abstract

The application discloses a kind of air pressure type flexible bowl sowing device, and the sowing device includes bowl roller, seed supply box and seed cleaning brush.The bowl roller is arranged at the seed discharge port of the lower end of seed supply box, and the bowl roller is provided with flexible seed bowl, and seed is filled and sowed by the rotation of rotating shaft, and the excess seed is brushed out by seed cleaning brush to complete sowing.The seed cleaning brush is rotatably arranged above the bowl roller, and both the bowl roller and the seed cleaning brush rotate in clockwise direction.The sowing device provided by the application effectively avoids the problems of easy blockage of suction hole of air suction type sowing device and damage to seeds by seed protection element of bowl hole type sowing device, and does not need seed protection structure and does not damage seeds, so it has high practical value.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of seeding apparatus, in particular to a pneumatic flexible bowl seeder. BACKGROUND

[0002] At present, the precision seeding forms usually have two kinds, one is air suction type seeder, and the other is hole type seeder. The two forms are to arrange suction holes or filling holes on the surface of a cylinder to realize the processes of accurate seed taking, seed holding and seed releasing to seed the seeds to the designated position. The air suction type seeder is to form the pressure difference between the inside and outside of the suction hole through the vacuum of the closed space behind the suction hole arranged on the surface of the cylinder, so as to adsorb the seeds on the suction hole, adsorb the seeds in the filling area, keep the suction under the pressure difference, keep the suction through the seed holding area, and release the seeds in the seed releasing area to realize the single grain seeding. The size of the suction hole is determined according to the type and size of the seeds. The hole type seeder is to arrange the holes corresponding to the seeds on the surface of the cylinder, and the size of the hole can be set according to the size, shape and seeding amount of the seeds. In the seeding process, the seeds are filled into the holes in the filling area, and the excess seeds are removed. When passing through the seed holding area, a seed protection element covers the hole to prevent the seeds from falling off from the hole. In the seed releasing area, the hole is separated from the seed protection element covering the hole, and the seeds fall off from the hole under the action of gravity and are seeded to the corresponding position to realize the precision seeding.

[0003] In reality, the two kinds of precision seeders have some problems which will affect the actual application. The air suction type seeder can adsorb other substances besides the seeds due to the adsorption of the suction hole, so that the impurities (such as seed coat, micro stem, root sprout of germinated seeds, etc.) in the seeds are also adsorbed and blocked in the suction hole, which causes the phenomenon of suction leakage and hole during seeding, especially a large number of suction holes are blocked after a long time of seeding, which cannot be seeded, which is one of the reasons affecting the wide application of the air suction type seeder. The hole type seeder has relative movement between the seed protection element covering the hole and the hole roller, which damages the seeds in the hole, causes the seeds to be broken and crushed, and causes the seed clamping phenomenon, which affects the seeding quality. SUMMARY

[0004] The purpose of the present application is to provide a seeder with the mode of flexible hole bowl seed taking and pneumatic seed holding. After the bowl seed taking, the seeds in the bowl are clamped and fixed by the external air pressure of the bowl to make the seeds remain in the bowl in the seed holding area, which avoids the problems of suction hole blockage of the air suction type seeder and damage of the seed protection element to the seeds of the hole type bowl seeder.

[0005] In order to achieve the above-mentioned purpose, the present application provides a pneumatic flexible bowl seeder, which comprises a bowl roller, a seed supply box and a seed cleaning brush, the seed supply box is open at the upper end, and one side of the bottom wall at the lower end is provided with an opening, which 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 hair brush rotatably arranged directly above the bowl roller, and the seed cleaning brush and the bowl roller 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 uniformly arranged along the outer circumference of the roller body in the direction of the central axis, and a plurality of radial holes are uniformly arranged along the axial direction of the roller body on each axial through hole, the depth of the radial hole extends from the outer surface of the bowl roller to the center direction, and a bottom surface is formed after penetrating the axial through hole.

[0007] Further comprising a rotating shaft, which is located on the central axis of the roller body, the length of the rotating shaft is greater than the length of the roller body, and the rotating shaft is fixedly connected with the roller body; wherein the center of the circle formed by the center lines of the axial through holes in each cross section of the roller body and the center of the cross section of the rotating shaft are the same center.

[0008] Further comprising a flexible seed containing bowl, which is a bowl-shaped body with an open top and is fixed to the bottom surface at the reverse end of the open end, the outer diameter of the open end is the same as the outer diameter of the radial hole and is tightly fitted into the radial hole for seed containing, and the sidewall of the flexible seed containing bowl can be deformed under pressure.

[0009] Further comprising an end cap and a cover, which are circular plates sleeved on the rotating shaft, and are matched with the roller body respectively, and the cover is matched with the roller body at both ends, the cover rotates with the rotating shaft, and the end cap 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 cap, one end of the roller body is clamped in the annular groove, and a closed annular space is formed between the end cap and the end face of the roller body, and the annular space is in communication with each axial through hole;

[0011] Further comprising a gas hole in communication with the air pressure pump and a vent hole in communication with the outside in the end cap; two rib strips are further included in the end cap, the width of the rib strip is greater than the diameter of the axial through hole, and the two rib strips are arranged radially in the annular space to divide the annular space into two independent first and second regions; the gas hole is located in the first region, and the first region is pressurized to a high pressure zone by the air pressure pump; the vent hole is located in the second region, and the second region in communication with the outside is a normal pressure zone.

[0012] Preferably, a sealing mechanism is arranged on the annular surface of the roller body in contact with the end cover, so that the contact surface of the roller body and the end cover is in a sealed state when the roller body rotates.

[0013] Preferably, the flexible seed bowl is made of a flexible material such as rubber or silica gel, and the flexible seed bowl is deformed by air pressure generated by an air pump to hold the seeds, thereby effectively protecting the seeds from damage.

[0014] The seed sower provided by the application has the following advantages.

[0015] The seed sower of the application can effectively avoid the problems of clogging of the suction holes of the air suction type seed sower and damage of the seeds by the seed protection elements of the bowl hole type seed sower by extruding the bowl to keep the seeds in the bowl when the bowl is used to take seeds, and has a simple and compact structure.

[0016] Meanwhile, the impurities trapped in the suction holes can be automatically cleaned at the same time of seed suction and seed discharge, the clogging problem is solved, and the conditions of missing seeding and less seeding are minimized, so that the seeds are evenly sowed and the seed sower can continuously and stably maintain the highest efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a schematic view of the internal structure of the seed sower provided in Embodiment 1 of the application.

[0018] Figure 2 Fig. 2 is a sectional view of the bowl roller 1 in the seed sower provided in Embodiment 1 of the application.

[0019] Figure 3 Fig. 3 is a sectional view of the roller body 11 in the seed sower provided in Embodiment 1 of the application.

[0020] Figure 4 Fig. 4 is a schematic view of the three-dimensional structure of the end cover 14 in the seed sower provided in Embodiment 1 of the application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0022] Embodiment 1

[0023] The application provides a flexible bowl seed sower by air pressure, and the bowl is made of a flexible material such as rubber or silica gel. Figures 1-4The seeder is provided with a bowl roller 1, a seed supply box 2 and a seed cleaning brush 3. The seed supply box 2 is open at the upper end for containing seeds, and one side of the bottom wall at the lower end of the seed supply box 2 is provided with an opening, which 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. The bowl roller 1 comprises a hollow cylindrical roller body 11, a plurality of axial through holes 111 are uniformly arranged along the outer circumference of the roller body 11 in the direction of the central axis, and a plurality of radial holes 112 are uniformly arranged along the axial length direction of each axial through hole 111. The radial holes 112 extend from the outer surface of the bowl roller 1 to the center of the circle, and form a bottom surface 113 after penetrating the axial through hole 111. The bowl roller 1 further comprises a rotating shaft 13 penetrating the central axis of the roller body 11, wherein the center of the circle formed by the center lines of the axial through holes 111 on each cross section of the roller body 11 is the same as the center of the circle of the cross section of the rotating shaft 13. The bowl roller 1 further comprises a flexible seed containing bowl 12, which is a bowl-shaped body with an open top and is fixed to the bottom surface 113 at the reverse end of the open end. The outer diameter of the open end is the same as that of the radial hole 112, and can be embedded in the radial hole 112 for containing seeds. The sidewall of the flexible seed containing bowl 12 can be deformed under pressure. The bowl roller 1 further comprises end caps 14 and covers 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 the rotating shaft 13 is fixedly connected with the roller body 11.

[0024] The end cap 14 and the cover 15 are circular plates sleeved on the rotating shaft 13 and cooperate with the covers at the two ends of the roller body 11. The 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] Reference Figure 2 and Figure 4 An annular groove 143 is formed at one end of the end cap 14, and one end of the roller body 11 is clamped in the annular groove 143. An annular space is formed between the end cap 14 and the end surface of the roller body 11, which is sealed and communicates with each axial through hole 111. An air hole 141 communicating with an air pump and a vent hole 142 communicating with the outside are provided in the end cap 14, and two rib strips 144 are also included. The width of the rib strip 144 is greater than the diameter of the axial through hole 111, and the two rib strips are arranged radially in the annular space to divide the annular space into two independent first region 145 and second region 146. The air hole 141 and the vent hole 142 are respectively located in the first region 145 and the second region 146, and divide the first region 145 and the second region 146 into high pressure area and normal pressure area.

[0026] A sealing rubber strip is further provided on the annular surface of the roller body 11 in contact with the end cap 14, so that the contact surface of the roller body 11 with the end cap 14 is in a sealed state when rotating.

[0027] Reference Figure 1 The seed cleaning brush 3 is a rotating long brush arranged above the bowl roller 1, and rotates in the same direction as the bowl roller 1, i.e. clockwise. The seed cleaning brush 3 is used to clean the excess seeds in the flexible seed bowl 12, so that the flexible seed bowl 12 holds exactly one seed.

[0028] The flexible seed bowl 12 can be made of rubber or silica gel.

[0029] The working mode of the seeder 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 contacts the seed cleaning brush 3, the seed cleaning brush 3 brushes the seeds in the flexible seed bowl 12, so that only one seed is left in the flexible seed bowl 12. At this time, the flexible seed bowl 12 is in communication with the first area 145, and the pressure in the high-pressure area causes the flexible seed bowl 12 to deform, so that the retained seed is clamped. The clamped seed rotates with the bowl roller 1, and when the flexible seed bowl 12 is in communication with the second area 146, the pressure is released, and the flexible seed bowl 12 returns to its original state. At this time, the opening of the flexible seed bowl 12 faces downward, and the seed is released and sown. With the rotation of the rotating shaft 13, the axial through hole 111 is in communication with the high-pressure area or the normal-pressure area, so that the flexible seed bowl 12 repeatedly changes between being deformed by pressure and not being deformed by pressure. Each flexible seed bowl 12 holding a seed changes once per revolution, and the sowing is achieved by reciprocation.

[0030] As can be seen from the above, the seeder provided by the present application does not need a seed protection structure and will not damage the seeds. At the same time, the structure design of the seeder will not cause the phenomenon of empty hole and missed sowing due to the blockage of the seed holding structure, and has high practical value.

[0031] Although the content of the present application has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present application. After reading the above content, various modifications and alternatives of the present application will be obvious to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. An air-pressure flexible bowl planter characterized by, The seeder comprises a bowl roller (1), a seed supply box (2) and a seed cleaning brush (3). The seed supply box (2) is open at the upper end and has an opening on one side of the bottom wall at the lower end, which is the seed discharge port. The bowl roller (1) is cylindrical and is rotatably arranged at the seed discharge port of the lower end of the seed supply box (2). The seed cleaning brush (3) is a rotating long hair brush rotatably arranged directly above the bowl roller (1), and the seed cleaning brush (3) and the bowl roller (1) rotate in the same direction. The bowl roller (1) comprises: a roller body (11), which is cylindrical, and a plurality of axial through holes (111) are uniformly arranged along the outer circumference of the roller body (11) in the direction of the central axis. A plurality of radial holes (112) are uniformly arranged on each axial through hole (111) in the axial length direction of the roller body (11). The radial holes (112) extend from the outer surface of the bowl roller (1) to the center direction, and form a bottom surface (113) after penetrating the axial through hole (111); a rotating shaft (13) located on the central axis of the roller body (11), the length of the rotating shaft (13) is greater than the length of the roller body (11), and the rotating shaft (13) is fixedly connected with the roller body (11). The center of the circle formed by the center lines 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), which is a bowl-shaped body with an open top, and is fixed to the bottom surface (113) at the reverse end of the open end. The outer diameter of the open end is the same as the outer diameter of the radial hole (112), and is tightly fitted into the radial hole (112) for seed storage. The sidewall of the flexible seed bowl (12) can deform under pressure; an end cover (14) and a cover (15), which are circular plates sleeved on the rotating shaft (13), and are matched with the roller body (11) respectively, and are matched with the cover at both ends of the roller body (11). The 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 of claim 1, wherein, One end of the end cover (14) is provided with an annular groove (143), and one end of the roller body (11) is clamped in the annular groove (143). An airtight annular space is formed between the end cover (14) and the end surface of the roller body (11), and the annular space is in communication with each axial through hole (111); In the end cover (14), a gas hole (141) in communication with the air pressure pump and a vent hole (142) in communication with the outside are also arranged; The end cover (14) further comprises two rib strips (144) arranged radially in the annular space, which divide the annular space into two independent first and second regions (145) and (146). The width of the rib strip (144) is greater than the diameter of the axial through hole (111). The air hole (141) is located in the first area (145) which is pressurized into a high pressure area by an air pump; the air vent (142) is located in the second area (146) which is in communication with the outside and is a normal pressure area.

3. The seeder of claim 2, wherein, The annular surface of the roller body (11) in contact with the end cover (14) is provided with a sealing mechanism, so that the contact surface of the roller body (11) and the end cover (14) is in a sealed state when rotating.

4. The seeder according to any one of claims 2-3, wherein, The flexible seed pot bowl (12) is prepared from a deformed flexible material, and the flexible seed pot bowl (12) is deformed by air pressure to hold the seeds.

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