Seed selection device for rice cultivation

Abstract

The invention relates to the technical field of cultivation and seed selection, in particular to a seed selection device for rice cultivation, a second sieve plate is obliquely fixed in a shell, a plurality of buffer plates are connected to the lower surface of a first sieve plate at equal intervals in the length direction, and an air outlet of a fan communicates with a first connecting pipe; one end of the first connecting pipe extends into the shell and communicates with a square pipe, the square pipe communicates with a plurality of transverse pipes at equal intervals in the length direction, and the upper end of each transverse pipe communicates with a plurality of first exhaust pipes at equal intervals in the length direction. According to the rice seed screening device, rice seeds moving downwards are buffered and decelerated through a buffer plate, meanwhile, the rice seeds are purged and decelerated through gas flowing upwards, buffering and decelerating are conducted under the cooperation of the buffer plate and gas released by a first exhaust pipe, the collision strength between the rice seeds and a second sieve plate is reduced, and the rice seed screening effect is improved. Seed hull breaking or crack generation caused by impact of the rice seeds is avoided, so that the quality of the screened seeds is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cultivation and seed selection, in particular to a seed selection device for rice cultivation. Background Art

[0002] Rice seeds need to be selected before sowing. Seed selection means choosing rice with full grains for use as seeds. The purpose of seed selection is to remove grass seeds, impurities, galls, diseased grains and unfull grains mixed in the seeds, and improve the quality of the seeds.

[0003] When selecting rice seeds, the rice seeds are introduced into the seed selection device, and the vibrating motor drives the screen plate to vibrate and screen the rice seeds. The screen plate is arranged in multiple layers, and the large particles of debris screened out are released from the lower end of the upper screen, the screened rice seeds are released from the lower end of the lower screen, and the small particles of solid debris are released from the bottom end of the screening device shell. The large particles of debris, rice seeds and small particles of solid debris are screened and released. However, there is a certain distance between the upper screen plate and the lower screen plate. When the rice seeds fall from the upper screen plate and fall on the lower screen plate, the rice seeds fall on the lower screen plate and collide with it. When the rice seeds collide with the lower screen plate, the seeds will cause the shells to break or cracks to form, thereby reducing the quality of the seeds after screening. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that rice seeds fall on the lower sieve plate and collide with it. When the rice seeds collide with the lower sieve plate, the seeds will break or crack, thereby reducing the quality of the seeds after screening. A seed selection device for rice cultivation is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A seed selection device for rice cultivation is designed, including a shell and a fan, a first sieve plate is fixed at an angle in the shell, a second sieve plate is fixed at an angle in the shell, a vibration motor is connected to the bottom end of the shell, a plurality of buffer plates are connected to the lower surface of the first sieve plate at equal intervals along the length direction, and each buffer plate is arranged downwardly and tilted toward the side away from the feed hopper, an air outlet of the fan is connected to a first connecting pipe, one end of the first connecting pipe extends into the shell and is connected to a square tube, a plurality of transverse tubes are connected to the square tube at equal intervals along the length direction, and the upper end of each of the transverse tubes is connected to a plurality of first exhaust pipes at equal intervals along the length direction.

[0006] Preferably, a support rod is fixedly connected inside the shell, and the bottom ends of the plurality of buffer plates are all connected to the support rod.

[0007] Preferably, the first connecting tube is connected to a pressure mechanism for seed dispersion, and the pressure mechanism includes a second connecting tube, one end of the second connecting tube is connected to the first connecting tube, the other end of the second connecting tube extends into the shell and is connected to a U-shaped tube, the upper end of the U-shaped tube is connected to a number of second exhaust pipes at equal intervals along the length direction, the upper end of the U-shaped tube is fixedly connected to an air collecting hood, and the number of second exhaust pipes are located in the air collecting hood, and a first through hole is opened at the upper end of the air collecting hood.

[0008] Preferably, the U-shaped tube is located in the middle position above the square tube.

[0009] Preferably, a plurality of the first through holes are provided and are arranged at equal intervals along the length direction of the gas collecting hood.

[0010] Preferably, each of the first through holes is connected to an air guide pipe, and each air guide pipe is connected to a spiral guide vane.

[0011] Preferably, guide pushing mechanisms for improving the screening effect are symmetrically arranged on both sides of the interior of the shell, and the guide pushing mechanisms include a reduction motor, which is fixedly connected to the shell, and the output end of the reduction motor extends into the shell and is fixedly connected to a pushing fan blade, and the pushing fan blade is located above the second screen plate.

[0012] Preferably, a guide plate is fixedly connected to the inner wall of the shell, and the guide plate is located above the pushing fan blade.

[0013] Preferably, the guide plate is arranged to be inclined downward toward the second screen plate, and a plurality of second through holes are formed on the guide plate.

[0014] Preferably, the apertures of the second through holes are arranged gradually from small to large along the width direction of the guide plate.

[0015] The present invention provides a seed selection device for rice cultivation, which has the following beneficial effects: During the rice seed selection process, the buffer plate buffers and slows down the rice seeds moving downward, and the upward flowing gas blows and slows down the rice seeds. The buffer plate and the gas released by the first exhaust pipe cooperate to perform buffering and deceleration. The second sieve plate is a silicone coated metal sieve plate. The silicone coated metal sieve plate absorbs collision energy through the elastic deformation of the material, thereby reducing the collision strength between the rice seeds and the second sieve plate, avoiding the rice seeds from breaking or cracking due to impact, and thus improving the quality of the seeds after screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a seed selection device for rice cultivation proposed by the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of a seed selection device for rice cultivation proposed by the present invention Figure 2 ; Figure 3 This is a schematic structural diagram of the connection between the shell and the first sieve plate in a seed selection device for rice cultivation proposed by the present invention; Figure 4 This is a structural schematic diagram of the connection between the shell and the second sieve plate of a seed selection device for rice cultivation proposed by the present invention; Figure 5 This is a schematic structural diagram of the connection between the first connecting tube and the square tube in a seed selection device for rice cultivation proposed by the present invention; Figure 6 This is a schematic structural diagram of the connection between the shell and the guide pushing mechanism in a seed selection device for rice cultivation proposed by the present invention; Figure 7 for Figure 7 A schematic diagram of the local enlarged structure at point A above; Figure 8 This is a structural schematic diagram of the connection between the first connecting pipe and the pressurizing mechanism in a seed selection device for rice cultivation proposed by the present invention.

[0017] In the figure: 1. movable frame; 2. support frame; 3. shell; 4. spring; 5. feed hopper; 6. first screen plate; 7. second screen plate; 8. first slag discharge pipe; 9. second slag discharge pipe; 10. third slag discharge pipe; 11. vibration motor; 12. buffer plate; 13. support rod; 14. material conveying elevator; 15. fan; 16. square tube; 17. horizontal tube; 18. first exhaust pipe; 19. air duct pipe; 20. spiral dust collector; 21. pressurizing mechanism; 22. guide pushing mechanism; 211. second connecting pipe; 212. U-shaped tube; 213. second exhaust pipe; 214. air collecting hood; 215. first through hole; 216. air guide pipe; 217. spiral guide vane; 221. reduction motor; 222. pushing fan blade; 223. guide plate; 224. second through hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1: Reference Figure 1-5, a seed selection device for rice cultivation, comprising a mobile frame 1, both sides of the upper end of the mobile frame 1 are connected to support frames 2, a shell 3 is slidably connected between the two support frames 2, both sides of the bottom end of the shell 3 are connected to springs 4, and one end of each spring 4 is connected to the corresponding support frame 2, one side of the shell 3 is connected to a feed hopper 5, a first sieve plate 6 is fixed obliquely in the shell 3, a second sieve plate 7 is fixed obliquely in the shell 3, the sieve holes of the second sieve plate 7 are smaller than the sieve holes of the first sieve plate 6, the second sieve plate 7 is a silicone coated metal sieve plate, a first slag discharge pipe 8 is connected to the lower end side of the first sieve plate 6 on the shell 3, a second slag discharge pipe 9 is connected to the lower end side of the second sieve plate 7 on the shell 3, a third slag discharge pipe 10 is connected to the lower end side of the lower surface of the shell 3, the bottom end of the shell 3 is connected to a vibration motor 11, the lower surface of the first sieve plate 6 is connected along the length Several buffer plates 12 are connected at equal intervals in the direction, and each buffer plate 12 is tilted downward toward the side away from the feed hopper 5. A support rod 13 is fixedly connected in the shell 3, and the bottom ends of several buffer plates 12 are connected to the support rod 13. The upper end of the mobile frame 1 is connected to a fan 15, and the air outlet of the fan 15 is connected to a first connecting pipe. One end of the first connecting pipe extends into the shell 3 and is connected to a square tube 16. The square tube 16 is located below the second sieve plate 7. Several transverse tubes 17 are connected to the square tube 16 at equal intervals along the length direction. The upper end of each transverse tube 17 is connected to several first exhaust pipes 18 at equal intervals along the length direction. A spiral dust collector 20 is fixedly connected to the mobile frame 1, and the spiral dust collector 20 is slidably plugged into the upper end of the shell 3 through the air duct pipe 19. The mobile frame 1 is connected to a material conveying elevator 14 for feeding.

[0020] Working principle: When selecting rice seeds, the rice seeds are poured into the material conveying elevator 14, which lifts the rice seeds to a high place and then pours them into the feed hopper 5. The rice seeds in the feed hopper 5 are poured into the housing 3 and fall onto the first sieve plate 6. After the vibration motor 11 is powered on and started, it generates vibration, which is transmitted to the housing 3. The housing 3 transmits the vibration to the first sieve plate 6 and the second sieve plate 7. At the same time, the air sucked in by the fan 15 after it is started is introduced into the square tube 16 through the first connecting pipe. The gas in the square tube 16 enters different horizontal tubes 17. The gas in the horizontal tube 17 is released from different first exhaust pipes 18. The gas released from the first exhaust pipe 18 flows upward. Since the first sieve plate 6 is tilted and in a vibrating state, the rice seeds roll down along the tilt direction of the first sieve plate 6. During the rolling process, the rice seeds and small particles of solid debris pass through the first sieve plate 6, and the large particles of debris in the rice seeds remain on the second sieve plate 7. The sieved rice seeds and small particles of solid debris come into contact with the upward-flowing airflow, and the airflow purifies and buffers the rice seeds and small particles of solid debris, thereby reducing the speed at which the rice seeds and small particles of solid debris fall downward. After falling down for a distance, the rice seeds and small particles of solid debris come into contact with the buffer plate 12, and the buffer plate 12 provides a buffer for the rice seeds. The rice seeds and the small particles of solid debris are buffered. After buffering, the rice seeds and the small particles of solid debris slide down along the inclined direction of the buffer plate 12. When the rice seeds and the small particles of solid debris slide out from the bottom end of the buffer plate 12, they come into contact with the upward airflow again. The airflow decelerates the rice seeds and the small particles of solid debris by air impact, thereby reducing the collision intensity generated when the rice seeds and the small particles of solid debris fall on the second sieve plate 7. The second sieve plate 7 is a silicone-coated metal sieve plate. The silicone-coated metal sieve plate absorbs the collision energy through the elastic deformation of the material, thereby reducing the collision intensity between the rice seeds and the second sieve plate 7. Since the second sieve plate 7 is tilted and in a vibrating state, the rice seeds roll along the tilting direction of the second sieve plate 7, and the small particles of solid debris in the rice seeds pass through the second sieve plate 7. The screened small particles of solid debris fall on the inner bottom end of the shell 3, and the screened large particles of debris are released from the first discharge pipe 8, the screened rice seeds are released from the second discharge pipe 9, and the screened small particles of solid debris are released from the third discharge pipe 10. In the process of the air flow blowing on the rice seeds, the husks are separated from the rice seeds, and the air flow carries the husks through the first sieve plate 6 into the air duct 19. The air duct 19 guides the air flow carrying the husks into the spiral dust collector 20, and the spiral dust collector 20 separates the gas from the husks. During the rice seed selection process, the buffer plate 12 buffers and decelerates the rice seeds moving downward, and at the same time, the upward flowing airflow blows and decelerates the rice seeds. The buffer plate 12 and the first exhaust pipe 18 cooperate to release the airflow for buffering and deceleration, and the second sieve plate 7 is a silicone coated metal sieve plate. The silicone coated metal sieve plate absorbs collision energy through the elastic deformation of the material, reducing the collision intensity between the rice seeds and the second sieve plate 7, avoiding the rice seeds from breaking or cracking due to impact, thereby improving the quality of the seeds after screening.

[0021] Example 2: After the rice seeds are introduced into the shell 3 through the feed hopper 5, they fall on the middle position of the first sieve plate 6. The rice seeds pass through the first sieve plate 6 and fall on the middle position of the second sieve plate 7. Since there are fewer rice seeds on both sides of the second sieve plate 7, the sorting uniformity is reduced. At the same time, when most of the rice seeds fall from the middle position of the first sieve plate 6, the airflow released by the first exhaust pipe 18 in the middle position has a limited coverage range and cannot effectively buffer the concentrated falling seeds, resulting in a reduction in the overall buffering effect. Figure 6-8 As another preferred embodiment of the present invention, the difference from Example 1 is that the first connecting pipe is connected to a pressure mechanism 21 for seed dispersion, and the pressure mechanism 21 includes a second connecting pipe 211, one end of the second connecting pipe 211 is connected to the first connecting pipe, and the other end of the second connecting pipe 211 extends into the shell 3 and is connected to a U-shaped pipe 212, and the U-shaped pipe 212 is located in the middle position above the square tube 16, and the upper end of the U-shaped pipe 212 is connected to a plurality of second exhaust pipes 213 at equal intervals along the length direction, and the upper end of the U-shaped pipe 212 is fixedly connected to an air collecting hood 214, and the plurality of second exhaust pipes 213 are located in the air collecting hood 214, and the upper end of the air collecting hood 214 is provided with a first through hole 215, and the first through holes 215 are provided with a plurality of equal intervals along the length direction of the air collecting hood 214, each first through hole 215 is connected to an air guide pipe 216, and each air guide pipe 216 is connected to a spiral guide vane 217.

[0022] Working principle: While the first connecting pipe is introducing the gas into the square tube 16, a portion of the gas in the first connecting pipe is introduced into the second connecting pipe 211, and the second connecting pipe 211 introduces the gas into the U-shaped tube 212. The gas in the U-shaped tube 212 is released from the plurality of second exhaust pipes 213, and the released gas enters the gas collecting cover 214. A portion of the gas released from the first exhaust pipe 18 also enters the gas collecting cover 214. The gas in the gas collecting cover 214 passes through different first through holes 215 and enters the corresponding air duct 216. The gas in each air duct 216 is guided by the spiral guide vanes 217, and forms a vortex flow when released from the upper end of the air duct 216. The formed vortex flow gas moves upward. After the gas is pressurized and guided by the gas collecting hood 214, the air guide duct 216 and the spiral guide vane 217, the upward flow velocity increases, and after the flow velocity increases, it rushes to the middle area of the second sieve plate 7, and blows and buffers the seeds that fall from the middle position of the first sieve plate 6, so that the fallen seeds are scattered on both sides of the upper end of the second sieve plate 7, which is convenient for dispersing the rice seeds located in the middle area on both sides of the upper end of the second sieve plate 7, improving the uniformity of the rice seeds on the second sieve plate 7, thereby improving the sorting effect of the rice seeds. In addition, after enhancing the blowing effect of the middle area of the upper end of the second sieve plate 7, it avoids the strong collision between the seeds that fall from the middle position of the first sieve plate 6 and the second sieve plate 7, thereby improving the buffering effect.

[0023] Example 3: After the gas is pressurized and guided by the gas collecting hood 214, the air guide pipe 216 and the spiral guide vane 217, the upward flow speed increases, and after the flow speed increases, it rushes to the middle area of the second sieve plate 7, and the seeds that fall from the middle position of the first sieve plate 6 are purged and buffered, so that when the fallen seeds are scattered on both sides of the upper end of the second sieve plate 7, a part of the rice seeds scattered on both sides are likely to fall on the upper edge position of the second sieve plate 7, and the upward flow of gas at the edge position is weak, thereby reducing the screening effect of the rice seeds at the upper edge of the second sieve plate 7, refer to Figure 5-6 As another preferred embodiment of the present invention, the difference from Example 2 is that guide pushing mechanisms 22 for improving the screening effect are symmetrically arranged on both sides of the interior of the shell 3, and the guide pushing mechanism 22 includes a reduction motor 221, which is fixedly connected to the shell 3, and the output end of the reduction motor 221 extends into the shell 3 and is fixedly connected to a pushing fan blade 222, which is made of rubber material. The pushing fan blade 222 is located above the second sieve plate 7, and a guide plate 223 is fixedly connected to the inner wall of the shell 3, and the guide plate 223 is located above the pushing fan blade 222. The guide plate 223 is inclined downward toward the second sieve plate 7, and a plurality of second through holes 224 are opened on the guide plate 223, and the aperture of the second through holes 224 is gradually arranged from small to large along the width direction of the guide plate 223.

[0024] Working principle: When the gas ejected from the air guide 216 sweeps the rice seeds in the middle area of the second sieve plate 7, the swept rice seeds fall to both sides. A portion of the rice seeds falling to both sides fall on the guide plate 223. The rice seeds slide along the inclined direction of the guide plate 223. During the sliding process, the rice seeds fall from different second through holes 224. The rice seeds falling from the second through holes 224 fall on both sides of the upper end of the second sieve plate 7, thereby reducing the rice seeds falling on the upper edge of the second sieve plate 7. At the same time, after the reduction motor 221 is started, it drives the pushing fan blades 222 to rotate, and the pushing fan blades 222 push the rice seeds at the upper edge of the second sieve plate 7 to the middle area. With the cooperation of the vibration of the second sieve plate 7, the rice seeds are prevented from accumulating at the upper edge of the second sieve plate 7, thereby improving the screening effect of the second sieve plate 7 on the rice seeds.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A seed selection device for rice cultivation, comprising a housing (3) and a fan (15), wherein a first sieve plate (6) is fixed obliquely in the housing (3), characterized in that: in: A second sieve plate (7) is fixed obliquely in the shell (3), a vibration motor (11) is connected to the bottom end of the shell (3), a plurality of buffer plates (12) are connected to the lower surface of the first sieve plate (6) at equal intervals along the length direction, and each buffer plate (12) is arranged obliquely downward toward the side away from the feed hopper (5), an air outlet of the fan (15) is connected to a first connecting pipe, one end of the first connecting pipe extends into the shell (3) and is connected to a square tube (16), a plurality of transverse tubes (17) are connected to the upper end of the square tube (16) at equal intervals along the length direction, and a plurality of first exhaust pipes (18) are connected to the upper end of each transverse tube (17) at equal intervals along the length direction.

2. The seed selection device for rice cultivation according to claim 1, characterized in that: A support rod (13) is fixedly connected inside the housing (3), and the bottom ends of the plurality of buffer plates (12) are all connected to the support rod (13).

3. The seed selection device for rice cultivation according to claim 1, characterized in that: The first connecting tube is connected to a pressurizing mechanism (21) for seed dispersion, and the pressurizing mechanism (21) includes a second connecting tube (211), one end of the second connecting tube (211) is connected to the first connecting tube, the other end of the second connecting tube (211) extends into the shell (3) and is connected to a U-shaped tube (212), the upper end of the U-shaped tube (212) is connected to a plurality of second exhaust pipes (213) at equal intervals along the length direction, the upper end of the U-shaped tube (212) is fixedly connected to an air collecting hood (214), the plurality of second exhaust pipes (213) are located in the air collecting hood (214), and the upper end of the air collecting hood (214) is provided with a first through hole (215).

4. The seed selection device for rice cultivation according to claim 3, characterized in that: The U-shaped tube (212) is located at a middle position above the square tube (16).

5. The seed selection device for rice cultivation according to claim 4, characterized in that: A plurality of the first through holes (215) are provided and are arranged at equal intervals along the length direction of the gas collecting cover (214).

6. The seed selection device for rice cultivation according to claim 4, characterized in that: Each of the first through holes (215) is connected to an air guide pipe (216), and each air guide pipe (216) is connected to a spiral guide vane (217).

7. The seed selection device for rice cultivation according to claim 6, characterized in that: Guide pusher mechanisms (22) for improving the screening effect are symmetrically arranged on both sides of the interior of the housing (3). The guide pusher mechanism (22) includes a reduction motor (221). The reduction motor (221) is fixedly connected to the housing (3). The output end of the reduction motor (221) extends into the housing (3) and is fixedly connected to a pusher blade (222). The pusher blade (222) is located above the second sieve plate (7).

8. The seed selection device for rice cultivation according to claim 7, characterized in that: A guide plate (223) is fixedly connected to the inner wall of the housing (3), and the guide plate (223) is located above the pushing blade (222).

9. The seed selection device for rice cultivation according to claim 8, characterized in that: The guide plate (223) is arranged obliquely downward in the direction of the second screen plate (7), and a plurality of second through holes (224) are formed on the guide plate (223).

10. The seed selection device for rice cultivation according to claim 9, characterized in that: The apertures of the second through holes (224) are arranged gradually from small to large along the width direction of the guide plate (223).

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