A seed water selection device for agricultural rice cultivation

Abstract

The present application relates to the field of agricultural planting, and particularly relates to a seed water selection device for agricultural rice cultivation, which comprises a processing cylinder with an open upper end, a receiving column, a rubbing and stirring unit and a discharging unit. The present application can solve the following problems in the prior art: full seeds, half-full seeds and shriveled seeds cannot be accurately separated when rice seeds are screened in the collecting cavity, resulting in that half-full seeds and shriveled seeds are still contained in the full seeds after water selection, and affecting the water selection precision of rice seeds. The present application can rub and stir the rice seeds to separate the half-full and shriveled poor-quality seeds accumulated at the bottom from the full seeds, so as to accurately and efficiently separate different types of rice seeds. The present application can use the unloading frame and the auxiliary frame to respectively fish the shriveled poor-quality seeds and half-full seeds in the water, so as to accurately separate the full seeds, half-full seeds and shriveled poor-quality seeds.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting, and in particular to a seed water selection device for rice cultivation. Background Technology

[0002] Rice is one of my country's most important food crops, with over 60% of the population relying on it as their staple food. Rice is typically cultivated using seedling transplanting and direct sowing (seeds sown directly into paddy fields). Before using rice seeds to cultivate seedlings or for direct sowing, seed selection is generally performed before soaking and germination to ensure high germination and emergence rates. This selection aims to choose high-quality, plump seeds, separate out semi-plump seeds, and remove shriveled and inferior seeds, laying the foundation for cultivating robust, uniform, and high-quality seedlings, or for improving the emergence and seedling survival rates of direct-sown rice.

[0003] Rice seed selection typically uses clean water. First, the seeds are soaked in water. Plump seeds, due to their greater density than water, sink to the bottom, while semi-plump seeds, with a density similar to water, float in the middle layer. Shriveled, inferior seeds, with a density less than water, float to the surface. This method selects plump, high-quality seeds, improving the germination and emergence rates of rice seeds. At the same time, the selected semi-plump seeds can be used for separate sowing and management, which can also cultivate healthier seedlings, thereby improving the utilization rate of semi-plump seeds.

[0004] However, there are usually some problems when water-selecting rice seeds. With the development of technology, technicians in related fields have also made a lot of optimizations to the water-selection method of rice seeds.

[0005] For example, Chinese Patent CN114713359A discloses a water-selection device for capturing defective rice seeds using buoyancy. It includes a shell, and a screening component and a catching component disposed inside the shell. The screening component includes a drive motor, a rotating shaft disposed at the output end of the drive motor, a first gear disposed on the rotating shaft, a second gear meshing with the first gear, and a stirring component disposed on the second gear. The rotating shaft passes through the shell from the top end and into the shell, and the second gear is located at the bottom end of the shell. The catching component includes a drive cylinder, a drive shaft disposed at the output end of the drive cylinder, and a collection box connected to the drive shaft at the end away from the drive cylinder. The collection box is provided with multiple collection chambers from top to bottom, and the collection box has multiple collection ports, each collection port corresponding to one of the collection chambers.

[0006] In use, the drive motor drives the rotating shaft to rotate the first gear, which in turn drives the second gear to rotate. The second gear then drives the stirring component to stir the water and seeds inside the shell, preventing the seeds from piling up and affecting the screening effect. Then, multiple collection chambers are set in multiple collection boxes to screen the seeds inside the shell in layers, improving screening efficiency and effect.

[0007] However, the above-mentioned rice seed water separation device still has some shortcomings in actual use: Because rice seeds consist of three parts—plump seeds, semi-plump seeds, and shriveled seeds—when rice seeds are stirred in water, all three types become mixed in. Therefore, the existing technology cannot accurately separate plump, semi-plump, and shriveled seeds when screening rice seeds through the collection chamber. This results in plump seeds still containing semi-plump and shriveled seeds after water selection, affecting the accuracy of rice seed selection. On the one hand, the mixing of plump, semi-plump, and shriveled seeds affects the uniformity of seed germination and seedling growth, which is detrimental to improving seedling quality. On the other hand, the underutilization of semi-plump seeds increases the seed cost for farmers.

[0008] Therefore, based on the above-mentioned viewpoints, there is still room for improvement in existing water selection methods for rice seeds. Summary of the Invention

[0009] To address the aforementioned problems, this invention provides a seed water selection device for agricultural rice cultivation, comprising a processing cylinder with an open top, a receiving column installed on the bottom wall of the processing cylinder, a kneading and stirring unit disposed between the processing cylinder and the receiving column, and a discharge unit installed inside the processing cylinder. The kneading and stirring unit includes a cross-shaped frame rotatably mounted on the upper end of the receiving column, and the discharge unit includes multiple discharge ports evenly distributed in a ring along the outer wall of the processing cylinder.

[0010] The kneading and stirring unit also includes a drive motor. The receiving column has an installation groove inside, and the drive motor is installed in the installation groove. The output end of the drive motor is equipped with a rotating shaft. The upper end of the rotating shaft passes through the receiving column and is connected to the cross-shaped frame. The bottom of the cross-shaped frame away from the receiving column is equipped with a U-shaped frame with its opening facing downwards through a support rod. The opposite side of the opening of the U-shaped frame is rotatably connected to a kneading roller through a universal coupling. The outer wall of the kneading roller is evenly provided with multiple ring-shaped execution brushes. A linkage mechanism is provided between the processing cylinder, the receiving column and the U-shaped frame. The linkage mechanism includes a connecting shaft rotatably connected to the inner wall of the opening of the U-shaped frame. A separation and retrieval mechanism is provided on the outer wall of the support rod. The separation and retrieval mechanism includes a displacement block that is slidably sleeved on the outer wall of the support rod.

[0011] Preferably, the linkage mechanism further includes a transmission gear, and an annular groove is provided on the outer wall of the receiving column and the inner wall of the processing cylinder. The two ends of the connecting shaft pass through the U-shaped frame and slide into the annular groove. The connecting shaft and the universal coupling are connected by belt drive, and the two ends of the connecting shaft are fitted with transmission gears that are rotatably connected in the annular groove. The top walls of the annular grooves inside the receiving column and the processing cylinder are respectively equipped with a first annular gear ring and a second annular gear ring that mesh with the transmission gear. Flexible baffle brushes for preventing rice seeds from entering are provided on the upper and lower sides of the outer wall of the annular groove. Multiple stirring rods are symmetrically arranged along the axis and evenly spaced along the length direction on the outer wall of the connecting shaft.

[0012] Preferably, the separation and retrieval mechanism further includes an extension rod, and the displacement block is slidably sleeved on the outer wall of the support rod through a keyway. An extension rod is installed on the side of the displacement block away from the receiving column. A wave groove is opened on the inner side wall of the processing cylinder. The end of the extension rod away from the displacement block is slidably connected to the wave groove. Two connecting plates are symmetrically arranged on the outer wall of the displacement block along the extension rod. A retrieval frame is installed on the side of the connecting plate away from the displacement block.

[0013] Preferably, the retrieval frame includes an inclined plate, which is installed on the side of the connecting plate away from the displacement block. The end of the inclined plate away from the connecting plate gradually slopes downward. A positioning hopper is provided on the upper part of the inclined plate away from the connecting plate. The distance between the opposite sides of the inclined plate and the positioning hopper gradually decreases towards the side away from the connecting plate. Both the inclined plate and the positioning hopper have an arc-shaped structure on the side away from the connecting plate, forming an arc-shaped collection port. The outer walls of the inclined plate and the positioning hopper are detachably fitted with a discharge frame. An auxiliary frame is installed at the lower end of the discharge frame. An opening is provided at the upper end of the auxiliary frame on the side away from the displacement block.

[0014] Preferably, the inclined plate has multiple material passage holes at equal intervals from top to bottom, the material passage holes are arranged horizontally, and multiple baffles are installed at the upper end of the inclined plate. The baffles are at a certain angle to the inclined plate, and the width of the baffles is greater than the distance between the upper and lower side walls of the material passage holes. The end of the baffle away from the inclined plate gradually tilts downward.

[0015] Preferably, the discharge unit further includes a sealing door, and a receiving groove is provided on the upper side wall of the discharge port. The sealing door is slidably connected in the receiving groove. Multiple pushing springs are provided between the upper end of the sealing door and the inner top wall of the receiving groove. A lever that slides through the discharge port is installed on the outer side wall of the sealing door. The upper end of the lever is engaged with the inner top wall of the discharge port by a linkage block. The discharge unit also includes an auxiliary mechanism and a water circulation mechanism installed inside the processing cylinder.

[0016] Preferably, the auxiliary mechanism includes a first annular groove. The processing cylinder has a first annular groove inside. The processing cylinder also has multiple annularly distributed gas storage grooves that are connected to the first annular groove. The upper end of the gas storage groove has two gas passages that penetrate the processing cylinder symmetrically along the length direction. A piston pad is slidably connected inside the gas passage. A top extension rod is installed on the upper end of the piston pad. The bottom wall of the processing cylinder has multiple receiving grooves that correspond to the positions of the gas storage grooves and are connected to the gas passages. A lifting pad connected to the top extension rod is slidably connected inside the receiving groove. Two return springs are symmetrically arranged along the length direction between the lower end of the lifting pad and the receiving groove.

[0017] Preferably, the auxiliary mechanism further includes a support plate, a sliding groove is provided on the inner bottom wall of the discharge port, a support plate is slidably connected in the sliding groove, the support plate is located below the sealing door, a second annular groove is provided at the lower end of the sliding groove outside the first annular groove, an annular top plate is installed on the lower end of multiple support plates, multiple annularly distributed lifting springs are evenly arranged between the lower end of the annular top plate and the inner bottom wall of the second annular groove, and multiple guide rods are installed at equal intervals on the upper end of the support plate, the cross-section of the guide rod is a triangular structure, and there is a trapezoidal through groove between two adjacent guide rods.

[0018] Preferably, the water circulation mechanism includes an annular water tank. An annular water tank is provided inside the treatment cylinder. Multiple annularly distributed water inlets are evenly provided at the upper end of the annular water tank. A cover screen is installed at the upper end of the water inlets. Two water pumps are symmetrically arranged on the outer wall of the treatment cylinder through a mounting bracket. The water inlet end of the water pump extends into the annular water tank. A drain pipe is installed at the water outlet end of the water pump. The end of the drain pipe away from the water pump extends into the upper part of the treatment cylinder. A filter element and a water tank are detachably installed in the middle of the drain pipe.

[0019] Preferably, the bottom wall of the processing cylinder gradually slopes downward from the middle to the outside, the bottom wall of the discharge port is higher than the bottom wall of the processing cylinder, and the bottom wall of the discharge port and the bottom wall of the processing cylinder are parallel, and the kneading roller is parallel to the bottom wall of the discharge port.

[0020] In summary, this application includes at least one of the following beneficial technical effects: I. This invention uses a rotating shaft to drive a cross-shaped frame, support rod, U-shaped frame, and kneading roller to move circumferentially along a receiving column. The kneading roller, in conjunction with the brush on its outer wall, can stir and knead the rice seeds piled on the bottom wall of the processing cylinder. This separates the semi-saturated, shriveled, inferior seeds from the plump seeds, allowing the semi-saturated, shriveled, inferior seeds to float upwards. The brush prevents damage to the rice seeds from the kneading force. Furthermore, the stirring action causes the water in the processing cylinder to flow circumferentially. This water flow, combined with the stirring rod, dislodges air from the rice seeds, further separating plump, semi-saturated, and shriveled inferior seeds more quickly. Thus, the stirring action further achieves the separation of rice seeds.

[0021] Second, the present invention, through the mutual cooperation between the connecting shaft, the transmission gear, the first ring gear and the second ring gear, can drive the kneading roller to revolve along the receiving column while it can rotate in the opposite direction and knead the rice seeds at the bottom of the processing cylinder, thereby increasing the friction between the kneading roller and the rice seeds at the bottom of the processing cylinder, so as to improve the kneading effect of the rice seeds and accelerate the separation speed of the rice seeds.

[0022] Third, this invention uses a water pump to completely extract the water from the treatment cylinder, ensuring that the treatment cylinder contains only rice seeds and no excess water, so that the rice seeds can be discharged without carrying excess water, thus facilitating the subsequent drying process of the rice seeds; in addition, the water pump can discharge water from the water tank into the treatment cylinder through the drain pipe for recycling, and at the same time, the water can be filtered through the filter element to remove impurities from the water.

[0023] Fourth, by controlling the lifting pad to extend from the receiving trough and be higher than the bottom wall of the processing cylinder, the lifting pad can work with the rubbing roller to enhance the rubbing effect on the rice seeds, thereby further accelerating the separation speed of the rice seeds and improving the water selection efficiency.

[0024] V. This invention, through the cooperation between the extension rod and the wave groove, allows the displacement block to move circumferentially along the receiving column while simultaneously moving up and down reciprocally. The displacement block drives the connecting plate, the inclined plate, the positioning bucket, and the unloading frame to move synchronously as a whole. The inclined plate and the positioning bucket can scoop up inferior seeds floating in the water and place them into the unloading frame. At the same time, the auxiliary frame can scoop up semi-full seeds in the water, thereby separating semi-full seeds from shriveled inferior seeds. This allows for precise separation of full seeds, semi-full seeds, and shriveled inferior seeds. Since semi-full seeds also have a certain germination rate, they can be fully utilized, saving rice farmers' expenses. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the first internal structure of the processing cylinder of the present invention.

[0028] Figure 3 This is a schematic diagram of the second internal structure of the processing cylinder of the present invention.

[0029] Figure 4 This is a schematic diagram of the internal structure between the processing cylinder and the receiving column of the present invention.

[0030] Figure 5 This is the present invention. Figure 4 A magnified view of part A.

[0031] Figure 6 This is the present invention. Figure 4 A magnified view of section B.

[0032] Figure 7 This is a schematic diagram of the water circulation mechanism of the present invention.

[0033] Figure 8 This is a schematic diagram of the separation and salvage mechanism of the present invention.

[0034] Figure 9 This is the present invention. Figure 8 A magnified view of a portion of point C.

[0035] Figure 10 This is a cross-sectional schematic diagram of the separation and salvage mechanism of the present invention.

[0036] In the diagram, 1. Processing cylinder; 2. Receiving column; 3. Kneading and stirring unit; 31. Cross-shaped frame; 32. Drive motor; 33. Rotating shaft; 34. Support rod; 35. U-shaped frame; 36. Kneading roller; 37. Actuating brush; 38. Linkage mechanism; 381. Connecting shaft; 382. Transmission gear; 383. First annular gear ring; 384. Second annular gear ring; 385. Stirring rod; 39. Separation and retrieval mechanism; 391. Displacement block; 392. Extension rod; 393. Wave chute; 394. Connecting plate; 395. Retrieval frame; 396. Inclined plate; 397. Positioning hopper; 398. Arc-shaped collection port; 399. Discharge frame; 300. Auxiliary frame; 400 1. Material passage hole; 401. Baffle plate; 5. Discharge unit; 51. Discharge port; 52. Sealing door; 53. Push spring; 54. Lever; 55. Linkage block; 56. Auxiliary mechanism; 561. First annular groove; 562. Air storage groove; 563. Air passage; 564. Piston pad; 565. Top extension rod; 566. Lifting pad; 567. Return spring; 568. Support plate; 569. Second annular groove; 570. Annular top plate; 571. Lifting spring; 572. Guide rod; 58. Water circulation mechanism; 581. Annular water tank; 582. Water inlet; 583. Cover screen; 584. Water pump; 585. Drain pipe; 586. Filter element; 587. Water tank. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-10 The embodiments of the present invention will be described in detail, but the present invention may be implemented in many different ways as defined and covered by the claims.

[0038] This application discloses a seed water selection device for agricultural rice cultivation. The device is primarily used in the water selection process of rice seeds. Technically, it can stir and rub the rice seeds, separating the semi-saturated, shriveled, inferior seeds piled at the bottom from the plump seeds, allowing the semi-saturated, shriveled, inferior seeds to float upwards. Specifically, during water selection, it can separately retrieve the semi-saturated, shriveled, inferior seeds floating on the water surface, thus separating plump seeds, semi-saturated seeds, and shriveled inferior seeds. Furthermore, this device can enhance the rubbing effect of the rice seeds by controlling the height of the lifting pad in conjunction with the rubbing rollers, thereby accelerating the separation speed of the rice seeds and improving water selection efficiency. Example 1

[0039] Reference Figure 1 As shown, a seed water selection device for agricultural rice cultivation includes a processing cylinder 1 with an open top. A receiving column 2 is installed on the bottom wall of the processing cylinder 1. A kneading and stirring unit 3 is arranged between the processing cylinder 1 and the receiving column 2. A discharge unit 5 is installed inside the processing cylinder 1. The kneading and stirring unit 3 includes a cross-shaped frame 31 rotatably installed on the upper end of the receiving column 2. The discharge unit 5 includes a plurality of discharge ports 51 that are evenly opened through the outer wall of the processing cylinder 1 and distributed in a ring. The bottom wall of the processing cylinder 1 gradually slopes downward from the middle to the outside. The bottom wall of the discharge port 51 is higher than the bottom wall of the processing cylinder 1, and the bottom wall of the discharge port 51 is parallel to the bottom wall of the processing cylinder 1.

[0040] In practical applications, rice seeds are first poured into the treatment cylinder 1, then a certain amount of water is poured into the treatment cylinder 1. The rice seeds settle at the bottom of the treatment cylinder 1. Then, the rice seeds are stirred and kneaded by the kneading and stirring unit 3. Finally, the water-selected rice seeds are discharged through the discharge port 51 by the kneading and stirring unit 3 in conjunction with the discharge unit 5.

[0041] Reference Figure 2 , Figure 3 and Figure 4As shown, since the piled rice seeds contain plump seeds, semi-plump seeds, and shriveled inferior seeds, it is necessary to separate them. Therefore, this invention performs a kneading and stirring process during the rice seed water selection, which allows the semi-plump seeds and shriveled inferior seeds piled at the bottom to float upwards. Specifically, this embodiment provides a kneading and stirring unit 3, which further includes a drive motor 32. The receiving column 2 has an internal mounting groove, and the drive motor 32 is installed inside the mounting groove. The drive motor 32... A rotating shaft 33 is installed at the outlet end. The upper end of the rotating shaft 33 passes through the receiving column 2 and is connected to the cross-shaped frame 31. The bottom of the cross-shaped frame 31 away from the receiving column 2 is provided with a U-shaped frame 35 with its opening facing downwards through a support rod 34. The opposite side of the opening of the U-shaped frame 35 is rotatably connected to a kneading roller 36 through a universal coupling. The kneading roller 36 is parallel to the inner bottom wall of the discharge port 51. Multiple ring-shaped execution brushes 37 are evenly arranged on the outer wall of the kneading roller 36. A linkage mechanism 38 is provided between the processing cylinder 1, the receiving column 2 and the U-shaped frame 35. A separation and retrieval mechanism 39 is provided on the outer wall of the support rod 34.

[0042] In the specific implementation process, the drive motor 32 is started, and the drive motor 32 drives the cross-shaped frame 31 to rotate through the rotating shaft 33. The cross-shaped frame 31 drives the support rod 34, the U-shaped frame 35 and the kneading roller 36 to move circumferentially along the receiving column 2. Thus, the kneading roller 36, together with the execution brush 37 on its outer wall, can stir and knead the rice seeds piled on the bottom wall of the processing cylinder 1. This can separate the semi-saturated shriveled inferior seeds piled at the bottom from the plump seeds, so that the semi-saturated shriveled inferior seeds can float upwards. The execution brush 37 can prevent the rice seeds from being damaged by the kneading force. The linkage mechanism 38 can stir the rice seeds above the kneading roller 36 inside the processing cylinder 1. At the same time, the semi-saturated shriveled inferior seeds float to the water surface. The separation and retrieval mechanism 39 can retrieve the semi-saturated shriveled inferior seeds separately, thus achieving precise separation between plump seeds, semi-saturated seeds and shriveled inferior seeds.

[0043] After the rice seeds are water-selected, the rubbing roller 36 continues to move around the receiving column 2, and the rubbing roller 36, together with the brush 37, can sweep the rice seeds at the bottom of the processing cylinder 1 to the discharge port 51, so that the water-selected rice seeds can be discharged from the discharge port 51.

[0044] Reference Figure 5As shown, during the water selection process, some plump rice seeds may contain a small amount of air or not be fully submerged in water and float upwards. At this time, the rice seeds are located above the rubbing roller 36. Therefore, to improve the water selection effect, it is necessary to stir the rice seeds floating on the water surface. Specifically, the linkage mechanism 38 includes a connecting shaft 381 rotatably connected to the inner wall of the opening of the U-shaped frame 35. The linkage mechanism 38 also includes a transmission gear 382. Both the outer wall of the receiving column 2 and the inner wall of the processing cylinder 1 are provided with annular grooves. The two ends of the connecting shaft 381 pass through the U-shaped frame 35 and slide... The connecting shaft 381 and the universal coupling are connected by belt drive, and both ends of the connecting shaft 381 are fitted with transmission gears 382 that are rotatably connected in the annular groove. The top walls of the annular groove inside the receiving column 2 and the processing cylinder 1 are respectively equipped with a first annular gear ring 383 and a second annular gear ring 384 that mesh with the transmission gears 382. Flexible baffle brushes (not shown in the figure) are provided on the upper and lower sides of the outer wall of the annular groove to prevent rice seeds from entering. Multiple stirring rods 385 are symmetrically arranged along the axis and evenly spaced along the length direction on the outer wall of the connecting shaft 381.

[0045] In the specific implementation process, when the support rod 34, U-shaped frame 35 and kneading roller 36 move circumferentially along the receiving column 2, the U-shaped frame 35 drives the connecting shaft 381 and the transmission gear 382 to move synchronously, so that the transmission gear 382 at both ends of the connecting shaft 381 meshes with the first ring gear 383 and the second ring gear 384 respectively, thereby the transmission gear 382 drives the connecting shaft 381 to rotate, and the connecting shaft 381 drives the kneading roller 36 to rotate through the universal coupling and knead the rice seeds at the bottom of the treatment cylinder 1.

[0046] It should be noted that the first annular gear ring 383 and the second annular gear ring 384 are both located above the transmission gear 382. Therefore, the rotation direction of the transmission gear 382 is opposite to the circumferential movement direction of the U-shaped frame 35. As a result, while the kneading roller 36 revolves around the receiving column 2, it can also rotate in the opposite direction, thereby increasing the friction between the kneading roller 36 and the rice seeds at the bottom of the processing cylinder 1, so as to improve the kneading effect on the rice seeds. In addition, while the connecting shaft 381 rotates, it can drive the stirring rod 385 on its outer wall to stir the rice seeds floating in the water inside the processing cylinder 1. The rice seeds are subjected to force and move irregularly, so as to throw out the air in the rice seeds and separate the plump seeds, half-full seeds and shriveled inferior seeds more quickly. Thus, the separation of rice seeds can be further achieved by stirring.

[0047] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, in order to facilitate the pouring of rice seeds after water selection from the processing cylinder 1, in this embodiment, the discharge unit 5 also includes a sealing door 52. The upper side wall of the discharge port 51 is provided with a receiving groove, and the sealing door 52 is slidably connected in the receiving groove. Multiple pushing springs 53 are provided between the upper end of the sealing door 52 and the inner top wall of the receiving groove. A lever 54 that slides through the discharge port 51 is installed on the outer side wall of the sealing door 52. The upper end of the lever 54 and the inner top wall of the discharge port 51 are engaged by a linkage block 55. The discharge unit 5 also includes an auxiliary mechanism 56 and a water circulation mechanism 58 installed inside the processing cylinder 1.

[0048] In this embodiment, the push spring 53 always applies a downward pushing force to the sealing door 52, so that the sealing door 52 abuts against the inner bottom wall of the discharge port 51 in the initial state, thereby sealing the discharge port 51 and preventing water and rice seeds inside the processing cylinder 1 from flowing out of the discharge port 51.

[0049] In the specific implementation process, after the rice seeds are water-selected, the water inside the processing cylinder 1 is first extracted by the water circulation mechanism 58. Then, the sealing door 52 is lifted upward by the lever 54. When the linkage block 55 at the upper end of the lever 54 is engaged with the inner top wall of the discharge port 51, the sealing door 52 will not move downward under the action of the push spring 53. At this time, the discharge port 51 is opened. Then, the rice seeds at the bottom of the processing cylinder 1 are swept to the discharge port 51 by the kneading and stirring unit 3 so as to facilitate the collection of the water-selected rice seeds. In addition, the kneading effect of the rice seeds can be enhanced by the auxiliary mechanism 56.

[0050] Reference Figure 7 As shown, in order to facilitate the discharge of water-selected rice seeds from the discharge port 51, the water in the treatment cylinder 1 needs to be drained beforehand, and the water used for water selection of rice seeds can be recycled. Based on this, this embodiment provides a water circulation mechanism 58. Specifically, the water circulation mechanism 58 includes an annular water trough 581. An annular water trough 581 is provided inside the treatment cylinder 1. Multiple annularly distributed water inlet holes 582 are evenly provided at the upper end of the annular water trough 581. A cover net 583 is installed at the upper end of the water inlet hole 582. Two water pumps 584 are symmetrically arranged on the outer wall of the treatment cylinder 1 through a mounting bracket. The water inlet end of the water pump 584 extends into the annular water trough 581. A drain pipe 585 is installed at the water outlet end of the water pump 584. The end of the drain pipe 585 away from the water pump 584 extends to the upper part of the interior of the treatment cylinder 1. A filter element 586 and a water tank 587 are detachably installed in the middle of the drain pipe 585. The filter element 586 can be quickly disassembled and replaced.

[0051] In the specific implementation process, when rice seeds are poured into the treatment cylinder 1, the rice seeds can be blocked by the cover net 583 to prevent them from entering the water inlet hole 582. When water is poured into the treatment cylinder 1, a small amount of water passes through the cover net 583 and the water inlet hole 582 and enters the annular water tank 581, making the annular water tank 581 full of water. After the rice seeds are water-selected, the water pump 584 is started. The water pump 584 draws the water in the annular water tank 581 into the water tank 587. Then the water in the treatment cylinder 1 continues to flow into the annular water tank 581, thereby completely drawing out the water in the treatment cylinder 1, ensuring that there are only rice seeds in the treatment cylinder 1 and no excess water, so that the rice seeds can be discharged without carrying excess water, which facilitates the subsequent drying treatment of the rice seeds.

[0052] Then, the unselected rice seeds are poured into the treatment cylinder 1, and the water in the water tank 587 is discharged into the treatment cylinder 1 through the drain pipe 585 by the water pump 584. At the same time, the water can be filtered through the filter element 586 to remove impurities in the water, thereby realizing the recycling of water and making the operation convenient. Example 2

[0053] Reference Figure 4 and Figure 5 As shown, based on Embodiment 1, in order to better separate rice seeds, this embodiment also provides an auxiliary mechanism 56 for enhancing the rubbing effect of rice seeds; specifically, the auxiliary mechanism 56 includes a first annular groove 561. The processing cylinder 1 has a first annular groove 561 inside. The processing cylinder 1 also has multiple annularly distributed air storage grooves 562 that are connected to the first annular groove 561 inside. The upper end of the air storage groove 562 has two air passages 563 that penetrate the processing cylinder 1 symmetrically opened along the length direction. A piston pad 564 is slidably connected inside the air passage 563. A top extension rod 565 is installed on the upper end of the piston pad 564. The bottom wall of the processing cylinder 1 has multiple receiving grooves that correspond to the positions of the air storage grooves 562 and are connected to the air passages 563. A lifting pad 566 connected to the top extension rod 565 is slidably connected inside the receiving groove. Two return springs 567 are symmetrically arranged along the length direction between the lower end of the lifting pad 566 and the receiving groove.

[0054] Furthermore, in this embodiment, the auxiliary mechanism 56 also includes a support plate 568. A sliding groove is provided on the inner bottom wall of the discharge port 51. The support plate 568 is slidably connected in the sliding groove. The support plate 568 is located below the sealing door 52. A second annular groove 569 is provided at the lower end of the sliding groove, located outside the first annular groove 561. An annular top plate 570 is installed on the lower end of multiple support plates 568. Multiple annularly distributed lifting springs 571 are evenly arranged between the lower end of the annular top plate 570 and the inner bottom wall of the second annular groove 569. Multiple guide rods 572 are installed at equal intervals on the upper end of the support plate 568. The cross-section of the guide rod 572 is a triangular structure, and there is a trapezoidal through groove between two adjacent guide rods 572.

[0055] In this embodiment, the reset spring 567 always applies a downward contraction force to the lifting pad 566, so that the lifting pad 566 is contracted in the storage groove in the initial state; in addition, the lifting spring 571 always applies an upward lifting force to the annular top plate 570, so that the annular top plate 570 drives the support plate 568 to the highest position in the initial state.

[0056] In the specific implementation process, when water-selecting rice seeds, the sealing door 52 needs to move downward to seal the discharge port 51. At this time, the sealing door 52 applies downward pressure to the support plate 568, causing the support plate 568 to drive the annular top plate 570 to move downward. At the same time, the annular top plate 570 squeezes the air in the second annular groove 569 into the first annular groove 561. Then, the air in the first annular groove 561 passes through the air storage groove 562 and the air passage 563 in sequence to apply an upward pushing force to the piston pad 564, causing the piston pad 564 to drive the top extension rod 565 to drive the lifting pad 566 to extend from the storage groove and be higher than the bottom wall of the processing cylinder 1. This facilitates the lifting pad 566 to work with the rubbing roller 36 to enhance the rubbing effect on the rice seeds, thereby accelerating the separation speed of the rice seeds and improving the water selection efficiency.

[0057] After the rice seeds are water-selected, the sealing door 52 moves upward, and the support plate 568 moves upward and resets under the action of the annular top plate 570 and the lifting spring 571. At this time, the lifting pad 566 moves downward and resets under the action of the reset spring 567, and the air in the air passage 563 is squeezed into the second annular groove 569. Then, the rice seeds in the processing cylinder 1 are swept to the discharge port 51 by the rubbing roller 36 and discharged. During this period, the guide rod 572 will not obstruct the rice seeds, so that the rice seeds can be discharged through the trapezoidal channel. Example 3

[0058] Reference Figure 8As shown in Embodiment 1, in order to ensure the separation between plump seeds and inferior seeds, it is necessary to promptly remove the inferior seeds floating on the water surface during the rice seed water selection process. Based on this, a separation and retrieval mechanism 39 is provided in a specific embodiment of this solution. Specifically, the separation and retrieval mechanism 39 includes a displacement block 391 slidably sleeved on the outer wall of the support rod 34. The displacement block 391 is slidably sleeved on the outer wall of the support rod 34 through a keyway engagement. An extension rod 392 is installed on the side of the displacement block 391 away from the receiving column 2. A wave groove 393 is opened on the inner side wall of the processing cylinder 1. The end of the extension rod 392 away from the displacement block 391 is slidably connected to the wave groove 393. Two connecting plates 394 are symmetrically arranged on the outer wall of the displacement block 391 along the extension rod 392. A retrieval frame 395 is installed on the side of the connecting plate 394 away from the displacement block 391.

[0059] In the specific implementation process, when the support rod 34 moves around the support column 2, it drives the displacement block 391 and the extension rod 392 to move synchronously. During this period, through the cooperation between the extension rod 392 and the wave groove 393, the displacement block 391 can move up and down reciprocally while moving around the support column 2. Thus, the displacement block 391 drives the retrieval frame 395 through the connecting plate 394 to retrieve the semi-saturated and shriveled inferior seeds floating on the water surface and in the middle of the water.

[0060] Reference Figure 9 and Figure 10 As shown, in order to facilitate better retrieval of inferior seeds, in this embodiment, the retrieval frame 395 includes an inclined plate 396. The inclined plate 396 is installed on the side of the connecting plate 394 away from the displacement block 391. The end of the inclined plate 396 away from the connecting plate 394 gradually slopes downward. A positioning bucket 397 is provided on the upper end of the inclined plate 396 away from the connecting plate 394. The distance between the opposite sides of the inclined plate 396 and the positioning bucket 397 gradually decreases towards the side away from the connecting plate 394. Both the inclined plate 396 and the positioning bucket 397 on the side away from the connecting plate 394 are arc-shaped structures and form an arc-shaped collection port 398. The outer walls of the inclined plate 396 and the positioning bucket 397 are detachably fitted with a discharge frame 399. An auxiliary frame 300 is installed at the lower end of the discharge frame 399. An opening is provided at the upper end of the side of the auxiliary frame 300 away from the displacement block 391.

[0061] Furthermore, in this embodiment, the inclined plate 396 is provided with a plurality of material passage holes 400 at equal intervals from top to bottom. The material passage holes 400 are arranged horizontally, and a plurality of baffle plates 401 are installed on the upper end of the inclined plate 396. The baffle plates 401 are at a certain angle to the inclined plate 396, and the width of the baffle plates 401 is greater than the distance between the upper and lower side walls of the material passage holes 400. The end of the baffle plate 401 away from the inclined plate 396 gradually tilts downward.

[0062] In the specific implementation process, when the displacement block 391 moves up and down, it drives the connecting plate 394, the inclined plate 396, the positioning hopper 397, and the unloading frame 399 to move synchronously as a whole. When the displacement block 391 moves upward, the inclined plate 396 and the positioning hopper 397 can scoop the inferior seeds floating in the water into the unloading frame 399. During this period, the baffle plate 401 can prevent the inferior seeds from flowing out of the feed hole 400, and the arc-shaped collection port 398 can prevent the inferior seeds in the unloading frame 399 from flowing out. When the displacement block 391 moves downward, the inferior seeds in the water can enter the unloading frame 399 through the feed hole 400, thereby achieving the separation between plump seeds and inferior seeds. After the rice seeds are water-selected, the unloading frame 399 can be removed, the inferior seeds inside can be poured out, and then it can be reset.

[0063] It should be noted that since shriveled, inferior seeds float to the surface, while semi-full seeds sink a certain distance under their own weight, the semi-full seeds are located below the shriveled, inferior seeds. While the unloading frame 399 scoops up the shriveled, inferior seeds, the auxiliary frame 300 can scoop up the semi-full seeds in the water, thus separating the semi-full seeds from the shriveled, inferior seeds. This allows for precise separation of plump, semi-full, and shriveled, inferior seeds. Furthermore, since semi-full seeds also have a certain germination rate, they can be fully utilized, saving rice farmers' expenses.

[0064] During operation: First step: Pour the rice seeds into the treatment cylinder 1, then pour a certain amount of water into the treatment cylinder 1. The rice seeds will settle at the bottom of the treatment cylinder 1, while some semi-full seeds and shriveled inferior seeds will float on the water surface.

[0065] Step 2: Start the drive motor 32. The drive motor 32 drives the cross-shaped frame 31 to rotate through the rotating shaft 33. The cross-shaped frame 31 drives the support rod 34, the U-shaped frame 35 and the kneading roller 36 to move circumferentially along the receiving column 2. Thus, the kneading roller 36, together with the execution brush 37 on its outer wall, can stir and knead the rice seeds piled on the bottom wall of the processing cylinder 1. This can separate the semi-saturated and shriveled inferior seeds piled at the bottom from the plump seeds, so that the semi-saturated and shriveled inferior seeds can float upward.

[0066] Step 3: The U-shaped frame 35 drives the connecting shaft 381 and the transmission gear 382 to move synchronously along the circumferential direction of the receiving column 2, so that the transmission gear 382 at both ends of the connecting shaft 381 meshes with the first ring gear 383 and the second ring gear 384 respectively. Thus, the transmission gear 382 drives the connecting shaft 381 to rotate, and the rotation direction of the transmission gear 382 is opposite to the circumferential movement direction of the U-shaped frame 35. The connecting shaft 381 drives the kneading roller 36 to rotate and knead the rice seeds at the bottom of the processing cylinder 1.

[0067] In addition, when the sealing door 52 is in its lowest position, it moves the annular top plate 570 downward via the support plate 568. The annular top plate 570 then forces the air in the second annular groove 569 into the first annular groove 561, the air storage groove 562, and the air passage 563 in sequence, and applies an upward pushing force to the piston pad 564. This causes the piston pad 564 to drive the top extension rod 565 to drive the lifting pad 566 to extend from the storage groove and be higher than the bottom wall of the processing cylinder 1. This facilitates the lifting pad 566 to work with the rubbing roller 36 to enhance the rubbing effect on the rice seeds, thereby accelerating the separation speed of the rice seeds.

[0068] Step 4: When the support rod 34 moves circumferentially along the receiving column 2, it drives the displacement block 391 and the extension rod 392 to move synchronously. During this period, through the cooperation between the extension rod 392 and the wave groove 393, the displacement block 391 can move up and down reciprocally while moving circumferentially along the receiving column 2. The displacement block 391 drives the connecting plate 394, the inclined plate 396, the positioning bucket 397, and the unloading frame 399 to move synchronously as a whole. When the displacement block 391 moves upward, the inclined plate 396 and the positioning bucket 397 can retrieve the inferior seeds floating in the water into the unloading frame 399. When the displacement block 391 moves downward, the inferior seeds in the water can enter the unloading frame 399 through the material passage 400. At the same time, the auxiliary frame 300 can retrieve the semi-full seeds in the water, thereby separating the semi-full seeds from the shriveled inferior seeds. In this way, the full seeds, semi-full seeds, and shriveled inferior seeds can be accurately separated respectively.

[0069] Step 5: After the rice seeds are water-selected, start the water pump 584. The water pump 584 draws the water from the annular water tank 581 into the water tank 587. Then the water in the treatment cylinder 1 continues to flow into the annular water tank 581, thereby completely drawing out the water in the treatment cylinder 1, ensuring that there are only rice seeds in the treatment cylinder 1 and no excess water, so that the rice seeds can be discharged.

[0070] Step 6: After the rice seeds are water-selected, the sealing door 52 moves upward, and the support plate 568 moves upward and resets under the action of the annular top plate 570 and the lifting spring 571. At this time, the lifting pad 566 moves downward and resets under the action of the reset spring 567, and the air in the air passage 563 is squeezed into the second annular groove 569. Then, the rice seeds in the processing cylinder 1 are swept to the discharge port 51 by the rubbing roller 36 and discharged. During this period, the rice seeds can be discharged through the trapezoidal channel.

[0071] Then, the unselected rice seeds are poured into the treatment cylinder 1, and the water in the water tank 587 is discharged into the treatment cylinder 1 through the drain pipe 585 by the water pump 584. At the same time, the water can be filtered through the filter element 586 to remove impurities in the water, thereby realizing the recycling of water and making the operation convenient.

[0072] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0073] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seed water selection device for agricultural rice cultivation, comprising a processing cylinder with an open top, a receiving column installed on the bottom wall of the processing cylinder, a kneading and stirring unit arranged between the processing cylinder and the receiving column, and a discharge unit installed inside the processing cylinder, characterized in that: The kneading and mixing unit includes a cross-shaped frame rotatably mounted on the upper end of the receiving column, and the discharge unit includes multiple discharge ports evenly distributed in a ring along the outer wall of the processing cylinder, wherein: The kneading and stirring unit also includes a drive motor. The receiving column has an installation groove inside, and the drive motor is installed in the installation groove. The output end of the drive motor is equipped with a rotating shaft. The upper end of the rotating shaft passes through the receiving column and is connected to the cross-shaped frame. The bottom of the cross-shaped frame away from the receiving column is equipped with a U-shaped frame with an opening facing downwards through a support rod. The opposite side of the opening of the U-shaped frame is rotatably connected to a kneading roller through a universal coupling. The outer wall of the kneading roller is evenly provided with multiple ring-shaped execution brushes. A linkage mechanism is provided between the processing cylinder, the receiving column and the U-shaped frame. The linkage mechanism includes a connecting shaft rotatably connected to the inner wall of the opening of the U-shaped frame. A separation and retrieval mechanism is provided on the outer wall of the support rod. The separation and retrieval mechanism includes a displacement block that is slidably sleeved on the outer wall of the support rod. The linkage mechanism also includes a transmission gear. Both the outer wall of the receiving column and the inner wall of the processing cylinder are provided with annular grooves. The two ends of the connecting shaft pass through the U-shaped frame and slide into the annular groove. The connecting shaft and the universal coupling are connected by belt drive. Both ends of the connecting shaft are fitted with transmission gears that are rotatably connected in the annular groove. The top walls of the annular grooves inside the receiving column and the processing cylinder are respectively equipped with a first annular gear ring and a second annular gear ring that mesh with the transmission gear. Flexible baffle brushes are provided on the upper and lower sides of the outer wall of the annular groove to prevent rice seeds from entering. Multiple stirring rods are symmetrically arranged along the axis and evenly spaced along its length on the outer wall of the connecting shaft. The separation and retrieval mechanism also includes an extension rod. The displacement block is slidably sleeved on the outer wall of the support rod through a keyway. An extension rod is installed on the side of the displacement block away from the receiving column. A wave groove is opened on the inner side wall of the processing cylinder. The end of the extension rod away from the displacement block is slidably connected to the wave groove. Two connecting plates are symmetrically arranged on the outer wall of the displacement block along the extension rod. A retrieval frame is installed on the side of the connecting plate away from the displacement block.

2. The seed water selection device for agricultural rice cultivation according to claim 1, characterized in that: The retrieval frame includes an inclined plate, which is installed on the side of the connecting plate away from the displacement block. The end of the inclined plate away from the connecting plate gradually slopes downward. A positioning hopper is provided on the upper part of the inclined plate away from the connecting plate. The distance between the opposite sides of the inclined plate and the positioning hopper gradually decreases towards the side away from the connecting plate. Both the inclined plate and the positioning hopper have an arc-shaped structure on the side away from the connecting plate, forming an arc-shaped collection port. The outer walls of the inclined plate and the positioning hopper are detachably fitted with a discharge frame. An auxiliary frame is installed at the lower end of the discharge frame. An opening is provided at the upper end of the auxiliary frame on the side away from the displacement block.

3. The seed water selection device for agricultural rice cultivation according to claim 2, characterized in that: The inclined plate has multiple material passage holes at equal intervals from top to bottom. The material passage holes are arranged horizontally, and multiple baffles are installed at the upper end of the inclined plate. The baffles are at a certain angle to the inclined plate, and the width of the baffles is greater than the distance between the upper and lower side walls of the material passage holes. The end of the baffle away from the inclined plate gradually tilts downward.

4. The seed water selection device for agricultural rice cultivation according to claim 1, characterized in that: The discharge unit also includes a sealing door, and a receiving groove is provided on the upper side wall of the discharge port. The sealing door is slidably connected in the receiving groove. Multiple pushing springs are provided between the upper end of the sealing door and the inner top wall of the receiving groove. A lever that slides through the discharge port is installed on the outer side wall of the sealing door. The upper end of the lever and the inner top wall of the discharge port are engaged by a linkage block. The discharge unit also includes an auxiliary mechanism and a water circulation mechanism installed inside the processing cylinder.

5. The seed water selection device for agricultural rice cultivation according to claim 4, characterized in that: The auxiliary mechanism includes a first annular groove. The processing cylinder has a first annular groove inside. The processing cylinder also has multiple annularly distributed gas storage grooves that are connected to the first annular groove. The upper end of the gas storage groove has two gas passages that penetrate the processing cylinder symmetrically along the length direction. A piston pad is slidably connected inside the gas passage. A top extension rod is installed on the upper end of the piston pad. The bottom wall of the processing cylinder has multiple receiving grooves that correspond to the positions of the gas storage grooves and are connected to the gas passages. A lifting pad connected to the top extension rod is slidably connected inside the receiving groove. Two return springs are symmetrically arranged along the length direction between the lower end of the lifting pad and the receiving groove.

6. The seed water selection device for agricultural rice cultivation according to claim 4, characterized in that: The auxiliary mechanism also includes a support plate. A sliding groove is provided on the bottom wall of the discharge port. The support plate is slidably connected in the sliding groove. The support plate is located below the sealing door. A second annular groove is provided at the lower end of the sliding groove, located outside the first annular groove. An annular top plate is installed on the lower end of multiple support plates. Multiple annularly distributed lifting springs are evenly arranged between the lower end of the annular top plate and the inner bottom wall of the second annular groove. Multiple guide rods are installed at equal intervals on the upper end of the support plate. The cross-section of the guide rod is triangular, and there is a trapezoidal through groove between two adjacent guide rods.

7. The seed water selection device for agricultural rice cultivation according to claim 1, characterized in that: The bottom wall of the processing cylinder gradually slopes downward from the middle to the outside. The bottom wall of the discharge port is higher than the bottom wall of the processing cylinder, and the bottom wall of the discharge port and the bottom wall of the processing cylinder are parallel. The kneading roller is parallel to the bottom wall of the discharge port.

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