Rice seed screening device

Abstract

The utility model belongs to the technical field of seed selection equipment, and particularly relates to a rice seed screening device which comprises a screening and impurity removing mechanism and a saline seed selection mechanism. The discharging sliding plate is fixed to the end face of the horizontal screen drum and located below the discharging port. The rotating rod is rotationally mounted in the horizontal screen drum; the driving motor is fixed at the end part of the horizontal screen drum and is used for driving the rotating rod to rotate; the spiral blade is fixed on the rotating rod; the supporting legs are fixed on the bottom surface of the horizontal screen drum; the salt water seed selection mechanism comprises a salt water barrel, a salt water storage tank and a salt water storage tank; the salt water barrel is fixed on the supporting legs and is positioned below the discharging sliding plate; a stirring mechanism; according to the seed selection device, the horizontal screen drum is matched with the spiral blades to screen and remove impurities of rice seeds, the seeds after impurity removal automatically fall into the saline water barrel to be soaked in saline water for seed selection, and the seed selection efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of seed selection equipment, specifically relating to a rice seed screening device. Background Technology

[0002] Rice is a herbaceous plant belonging to the genus Oryza, and is the most important and oldest food crop in the Oryza genus. The selection of rice seeds requires the removal of impurities. During the rice threshing process, small stones, dust, and other impurities may be mixed in. Before planting rice, the seeds need to undergo a process of removing impurities and screening, and shriveled grains need to be picked out to ensure that the rice seeds are plump, thereby ensuring the quality of rice growth and survival.

[0003] Currently, there are many types of equipment available on the market for screening and removing impurities from rice seeds, such as vibrating screens and drum screens.

[0004] For example, a search revealed that in the prior art, Chinese utility model patent with authorization announcement number CN221790129U discloses "a rice seed impurity removal and screening device", which includes a screening chamber, two fans rotatably connected to the inner wall of the screening chamber, and protective covers fixedly connected to the outer walls of the two fans. A recovery chamber is provided on the outer wall of the screening chamber corresponding to the fans, and a waste discharge port is fixedly connected to the bottom outer wall of the recovery chamber. A first discharge port is provided on the outer wall of the screening chamber located below the fans, and a second discharge port is provided on the outer wall of the screening chamber located below the first discharge port.

[0005] Existing rice seed screening and purification equipment, including those mentioned above, can screen and remove impurities from rice seeds, but it cannot remove shriveled grains, requiring further selection of the rice seeds after purification, resulting in low efficiency.

[0006] To address the aforementioned problems, this utility model proposes a rice seed screening device. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a rice seed screening device that is convenient to use and has high seed selection efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a rice seed screening device, comprising a screening and impurity removal mechanism and a salt water seed selection mechanism.

[0009] The screening and impurity removal mechanism includes:

[0010] A horizontal screen cylinder has a feeding hopper fixed at the top end and a discharge port machined at the bottom end, and screening holes machined on the bottom surface of the horizontal screen cylinder.

[0011] A feeding slide plate is fixed to the end face of the horizontal screen cylinder and located below the discharge port;

[0012] A rotating rod is rotatably installed inside the horizontal screen cylinder;

[0013] A drive motor is fixed to the end of the horizontal screen cylinder and is used to drive the rotating rod to rotate.

[0014] Helical blades, the helical blades being fixed to the rotating rod;

[0015] Support legs, which are fixed to the bottom surface of the horizontal screen cylinder;

[0016] The brine seed selection mechanism includes:

[0017] A brine tank, which is fixed to the support leg and located below the feeding slide plate;

[0018] A stirring mechanism is installed inside the brine tank to stir the brine and rice seeds.

[0019] As a preferred embodiment of this utility model, the screening and impurity removal mechanism further includes:

[0020] A waste discharge hopper is fixed to the bottom surface of the horizontal screen cylinder.

[0021] As a preferred embodiment of this utility model, the stirring mechanism includes:

[0022] A support frame, which is fixed to the top of the brine tank;

[0023] A stirring rod, which is rotatably mounted on the bottom of the support frame;

[0024] A stirring motor, fixed to the top surface of the support frame, is used to drive the stirring rod to rotate;

[0025] A stirring paddle, which is fixed to the stirring rod.

[0026] As a preferred embodiment of this utility model, the brine seed selection mechanism further includes:

[0027] The brine tank has a convex bottom plate, which is a cylindrical structure with openings at both the top and bottom. The convex bottom plate is located below the brine tank and is partially embedded inside the brine tank.

[0028] A cylindrical body, which is fixed to the top surface of the convex base plate, and the outer wall of the cylindrical body abuts against the inner wall of the brine tank;

[0029] The second fixing frame is fixed to the support leg, and a second corner brace is fixed between the second fixing frame and the support leg;

[0030] An electric push rod is fixed to the bottom surface of the second fixing frame, and the piston rod of the electric push rod passes through the second fixing frame and is fixedly connected to the convex base plate.

[0031] As a preferred technical solution of this utility model, it also includes:

[0032] Two guide rods are symmetrically fixed to the bottom surface of the convex base plate, and the guide rods pass through the second fixing frame.

[0033] As a preferred technical solution of this utility model, it also includes:

[0034] The No. 1 sealing cap has a discharge port fixed on the outer wall of the brine tank, and the No. 1 sealing cap is installed on the opening of the discharge port by means of threaded engagement;

[0035] The No. 2 sealing cap has a discharge port fixed on the bottom surface of the convex base plate, and the No. 2 sealing cap is installed on the opening of the discharge port by means of threaded engagement.

[0036] As a preferred technical solution of this utility model, it also includes:

[0037] A rubber sealing ring is bonded and fixed to the top surface of the convex base plate.

[0038] As a preferred technical solution of this utility model, it also includes:

[0039] A first fixing frame is fixed to the support leg, and a corner support plate is fixed between the first fixing frame and the support leg. The brine tank passes through the first fixing frame.

[0040] A fixing flange is fixed to the brine tank and is used to fix the brine tank to the first fixing frame.

[0041] Compared with the prior art, the beneficial effects of this utility model are:

[0042] In this invention, a horizontal sieve cylinder combined with spiral blades is used to screen and remove impurities from rice seeds. The seeds after impurity removal automatically fall into a brine tank for brine soaking and seed selection, resulting in high seed selection efficiency.

[0043] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0045] Figure 1 This is a schematic diagram of the structure of this utility model;

[0046] Figure 2 This is a schematic cross-sectional view of the screening and impurity removal mechanism in this utility model;

[0047] Figure 3 This is a cross-sectional schematic diagram of the brine seed selection mechanism in this utility model.

[0048] In the diagram: 1. Screening and impurity removal mechanism; 11. Horizontal screen cylinder; 111. Discharge port; 112. Screening hole; 12. Feeding hopper; 13. Discharge slide plate; 14. Rotating rod; 15. Drive motor; 16. Spiral blade; 17. Impurity discharge hopper; 18. Support leg; 2. Brine seed selection mechanism; 21. Brine tank; 211. Impurity discharge port; 212. Discharge port; 213. Fixed flange; 22. Stirring mechanism; 221. Support frame; 222. Stirring rod; 223. Stirring motor; 224. Stirring paddle; 23. Convex bottom plate; 231. Cylinder body; 232. Guide rod; 233. Rubber sealing ring; 24. Electric push rod; 25. No. 1 sealing cap; 26. No. 2 sealing cap; 3. No. 1 fixed frame; 4. No. 1 corner support plate; 5. No. 2 fixed frame; 6. No. 2 corner support plate. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] Please see Figures 1-3 This utility model provides the following technical solution: a rice seed screening device, comprising a screening and impurity removal mechanism 1 and a salt water seed selection mechanism 2.

[0051] Furthermore, by Figure 1As shown, in this embodiment, the screening and impurity removal mechanism 1 includes: a horizontal screen cylinder 11, a feeding slide plate 13, a rotating rod 14, a drive motor 15, a spiral blade 16, and a support leg 18. A feeding hopper 12 is fixed to the top end of the horizontal screen cylinder 11, and a discharge port 111 is machined at the tail end. Screening holes 112 are machined on the bottom surface of the horizontal screen cylinder 11. The feeding slide plate 13 is fixed to the end face of the horizontal screen cylinder 11 and located below the discharge port 111. The rotating rod 14 is rotatably installed inside the horizontal screen cylinder 11. The drive motor 15 is fixed to the end of the horizontal screen cylinder 11 and is used for... The drive rod 14 is rotated, the spiral blade 16 is fixed on the drive rod 14, and the support leg 18 is fixed to the bottom surface of the horizontal screen cylinder 11. With the above scheme, when in use, the rice seeds to be screened are injected into the horizontal screen cylinder 11 from the feed hopper 12. During this period, the drive motor 15 is started to drive the drive rod 14 to rotate, and the spiral blade 16 rotates. When the spiral blade 16 rotates, it will simultaneously stir and propel the rice seeds. Small stones, dust and other impurities pass through the screening hole 112 and are discharged. The rice seeds are finally discharged from the discharge port 111 under the propulsion force of the spiral blade 16.

[0052] It should be noted that in actual use, the horizontal screen cylinder 11 can also be designed to be inclined, and the discharge port 111 is at a low position, so that the rice seeds can slide down the inclined surface during the screening process and be discharged. However, the inclination angle of the horizontal screen cylinder 11 has a great influence on the sliding speed of the rice seeds. If the sliding speed is too fast, it is easy to cause insufficient screening. The horizontal screen cylinder 11 of this utility model is designed horizontally and relies on the propulsion force of the spiral blades 16 to push the rice seeds out. At the same time, it also has a stirring function, which can effectively ensure that the rice seeds are fully screened.

[0053] It's easy to understand that in real life, most impurities in rice seeds are small stones, dust, or debris produced during the threshing process. Generally, there are no impurities larger than rice seeds, because obviously large impurities have already been removed in the previous deawning and washing processes. Therefore, it is only necessary to sift out the remaining small stones, dust, and other small impurities here.

[0054] Furthermore, by Figure 1 and Figure 2As shown in this embodiment, the brine seed selection mechanism 2 includes a brine tank 21 and a stirring mechanism 22. The brine tank 21 is fixed on the support leg 18 and located below the feeding slide plate 13. The stirring mechanism 22 is installed inside the brine tank 21 and is used to stir the brine and rice seeds. With the above scheme, an appropriate amount of brine is injected into the brine tank 21 in advance. After the rice seeds are discharged from the outlet 111, they will enter the brine tank 21 along the feeding slide plate 13. At the same time, the stirring mechanism 22 is started to stir the brine. After stirring, the seeds are left to stand. At this time, the plump seeds will sink because of their higher specific gravity, while the unplump or damaged seeds will float on the water surface because of their lower specific gravity, thus separating them.

[0055] It is worth mentioning that salt water selection is a common seed selection method. By sieving by specific gravity, it can effectively remove unqualified seeds such as empty shells, shriveled grains and diseased grains. Studies have shown that salt water with a specific gravity of 1.13 is usually used for rice seed selection.

[0056] Preferably, by Figure 1 As shown in this embodiment, the screening and impurity removal mechanism 1 further includes an impurity discharge hopper 17, which is fixed to the bottom surface of the horizontal screen cylinder 11. With the above solution, impurities can be easily discharged in a concentrated manner through the impurity discharge hopper 17 during use.

[0057] Optionally, by Figure 1 and Figure 3 As shown, in this embodiment, the stirring mechanism 22 includes: a support frame 221, a stirring rod 222, a stirring motor 223, and a stirring paddle 224. The support frame 221 is fixed to the top of the brine tank 21, the stirring rod 222 is rotatably mounted on the bottom of the support frame 221, the stirring motor 223 is fixed to the top surface of the support frame 221 and is used to drive the stirring rod 222 to rotate, and the stirring paddle 224 is fixed on the stirring rod 222. With the above solution, when in use, the stirring motor 223 is started to drive the stirring rod 222 to rotate, and the stirring rod 222 drives the stirring paddle 224 to rotate, so as to stir the brine and rice seeds.

[0058] Preferably, by Figure 1 and Figure 3As shown, the brine selection mechanism 2 also includes: a convex base plate 23, a cylindrical body 231, a second fixing frame 5, and an electric push rod 24. The brine tank 21 is a cylindrical structure with openings at both the top and bottom. The convex base plate 23 is located below the brine tank 21, and part of the convex base plate 23 is embedded inside the brine tank 21. The cylindrical body 231 is fixed to the top surface of the convex base plate 23, and the outer wall of the cylindrical body 231 abuts against the inner wall of the brine tank 21. The second fixing frame 5 is fixed to the support leg 18, and in... A second corner support plate 6 is fixed between the second fixed frame 5 and the support leg 18. The electric push rod 24 is fixed to the bottom surface of the second fixed frame 5, and the piston rod of the electric push rod 24 passes through the second fixed frame 5 and is fixedly connected to the convex bottom plate 23. With the above scheme, during use, during the soaking period, qualified seeds and some salt water are in the cylinder 231. After removing the floating seeds, the electric push rod 24 is activated to make the convex bottom plate 23 move down, so as to facilitate the removal of the selected qualified rice seeds.

[0059] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, it also includes: guide rods 232. Two guide rods 232 are symmetrically fixed to the bottom surface of the convex base plate 23, and the guide rods 232 pass through the second fixing frame 5. After adopting the above scheme, when in use, the two guide rods 232 are used to guide the convex base plate 23, which improves the stability of the convex base plate 23.

[0060] Preferably, by Figure 1 and Figure 3 As shown, this embodiment also includes: a first sealing cap 25 and a second sealing cap 26. A discharge port 211 is fixed on the outer wall of the brine tank 21. The first sealing cap 25 is installed at the opening of the discharge port 211 by a threaded engagement. A discharge port 212 is fixed on the bottom surface of the convex base plate 23. The second sealing cap 26 is installed at the opening of the discharge port 212 by a threaded engagement. With the above scheme, when using the brine tank, after the seed selection is completed, the two containers are placed below the discharge port 211 and the discharge port 212 respectively. The first sealing cap 25 is screwed off, and some brine and floating seeds are discharged from the discharge port 211 together. Then, the electric push rod 24 is activated to move the convex base plate 23 down. Finally, the second sealing cap 26 is screwed off, and qualified rice seeds and the remaining brine are discharged from the discharge port 212 together.

[0061] Preferably, by Figure 1 and Figure 3 As shown, this embodiment also includes a rubber sealing ring 233, which is bonded and fixed to the top surface of the convex base plate 23. With the above solution, when the convex base plate 23 is connected to the brine tank 21, the rubber sealing ring 233 shrinks, which improves the sealing performance.

[0062] Optionally, by Figure 1and Figure 3 As shown, this embodiment also includes: a first fixing frame 3 and a fixing flange 213. The first fixing frame 3 is fixed on the support leg 18, and a first corner support plate 4 is fixed between the first fixing frame 3 and the support leg 18. The brine tank 21 passes through the first fixing frame 3, and the fixing flange 213 is fixed on the brine tank 21 to fix the brine tank 21 on the first fixing frame 3. With the above scheme, the brine tank 21 is fixed on the first fixing frame 3 by the fixing flange 213 and bolts, and the first corner support plate 4 ensures the stability of the first fixing frame 3.

[0063] It should be noted that the drive motor 15, the stirring motor 223, and the electric push rod 24 are all commercially available conventional equipment with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0064] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0065] Components not described in detail in this article are existing technologies.

[0066] The working principle and usage process of this utility model: When using the screening device of this utility model, an appropriate amount of brine is injected into the brine tank 21 beforehand. The rice seeds to be screened are then injected into the horizontal sieve cylinder 11 from the feeding hopper 12. During this process, the drive motor 15 is started to drive the rotating rod 14 to rotate, and the spiral blades 16 rotate. When the spiral blades 16 rotate, they will simultaneously stir and propel the rice seeds. Small stones, dust and other impurities pass through the screening holes 112 and are discharged. Finally, the rice seeds are discharged from the discharge port 111 under the propulsive force of the spiral blades 16.

[0067] The stirring motor 223 is started to drive the stirring rod 222 to rotate. The stirring rod 222 drives the stirring paddle 224 to rotate. After the rice seeds are discharged from the discharge port 111, they will enter the brine tank 21 along the feeding slide plate 13. The stirring paddle 224 stirs the brine. After stirring, the brine is left to stand. At this time, the plump seeds will sink because of their greater specific gravity, while the unplump or damaged seeds will float on the water surface because of their lower specific gravity, thus separating them.

[0068] After seed selection, place the two containers below the discharge port 211 and the discharge port 212 respectively. Unscrew the first sealing cap 25, and some salt water and floating seeds will be discharged from the discharge port 211. Then, start the electric push rod 24 to move the convex bottom plate 23 down. Finally, unscrew the second sealing cap 26, and qualified rice seeds and the remaining salt water will be discharged from the discharge port 212.

[0069] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rice seed screening device, comprising a screening and impurity removal mechanism (1) and a salt water seed selection mechanism (2), characterized in that: The screening and impurity removal mechanism (1) includes: A horizontal screen cylinder (11) has a feeding hopper (12) fixed at the top end and a discharge port (111) machined at the tail end. A screening hole (112) is machined on the bottom surface of the horizontal screen cylinder (11). The feeding slide plate (13) is fixed to the end face of the horizontal screen cylinder (11) and located below the discharge port (111); A rotating rod (14) is rotatably installed inside the horizontal screen cylinder (11); A drive motor (15) is fixed to the end of the horizontal screen cylinder (11) and is used to drive the rotating rod (14) to rotate. Helical blade (16), the helical blade (16) is fixed on the rotating rod (14); Support leg (18), the support leg (18) is fixed to the bottom surface of the horizontal screen cylinder (11); The brine seed selection mechanism (2) includes: A brine tank (21) is fixed to the support leg (18) and located below the unloading slide plate (13); A stirring mechanism (22) is installed inside the brine tank (21) for stirring the brine and rice seeds.

2. The rice seed screening device according to claim 1, characterized in that: The screening and impurity removal mechanism (1) further includes: A waste discharge hopper (17) is fixed to the bottom surface of the horizontal screen cylinder (11).

3. The rice seed screening device according to claim 1, characterized in that: The stirring mechanism (22) includes: A support frame (221) is fixed to the top of the brine tank (21); A stirring rod (222) is rotatably mounted on the bottom of the support frame (221); A stirring motor (223) is fixed to the top surface of the support frame (221) and is used to drive the stirring rod (222) to rotate. A stirring paddle (224) is fixed on the stirring rod (222).

4. The rice seed screening device according to claim 1, characterized in that: The brine seed selection mechanism (2) also includes: A convex bottom plate (23) is provided. The brine tank (21) is a cylindrical structure with openings at both the top and bottom. The convex bottom plate (23) is located below the brine tank (21) and is partially embedded inside the brine tank (21). A cylindrical body (231) is fixed to the top surface of the convex bottom plate (23), and the outer wall of the cylindrical body (231) abuts against the inner wall of the brine tank (21); The second fixing frame (5) is fixed on the support leg (18), and a second corner brace plate (6) is fixed between the second fixing frame (5) and the support leg (18); An electric push rod (24) is fixed to the bottom surface of the second fixing frame (5), and the piston rod of the electric push rod (24) passes through the second fixing frame (5) and is fixedly connected to the convex base plate (23).

5. The rice seed screening device according to claim 4, characterized in that: Also includes: Guide rods (232), two guide rods (232) are symmetrically fixed to the bottom surface of the convex base plate (23), and the guide rods (232) pass through the second fixing frame (5).

6. The rice seed screening device according to claim 4, characterized in that: Also includes: The No. 1 sealing cap (25) has a discharge port (211) fixed on the outer wall of the brine tank (21). The No. 1 sealing cap (25) is installed on the opening of the discharge port (211) by means of threaded engagement. The second sealing cap (26) has a discharge port (212) fixed on the bottom surface of the convex base plate (23). The second sealing cap (26) is installed on the opening of the discharge port (212) by means of threaded engagement.

7. The rice seed screening device according to claim 4, characterized in that: Also includes: A rubber sealing ring (233) is bonded and fixed to the top surface of the convex base plate (23).

8. The rice seed screening device according to claim 1, characterized in that: Also includes: A first fixing frame (3) is fixed on the support leg (18), and a corner support plate (4) is fixed between the first fixing frame (3) and the support leg (18). The salt water tank (21) passes through the first fixing frame (3). A fixed flange (213) is fixed on the brine tank (21) for fixing the brine tank (21) on the first fixing bracket (3).

Images