Rice grading device and method

Abstract

The invention relates to the field of rice grading, in particular to a rice grading device and method.The rice grading device comprises a grading bin, a screening assembly movably arranged in the grading bin, a first guiding assembly fixedly installed between two first fixing rings, a second guiding assembly movably arranged in a second fixing ring and an adjusting assembly fixedly installed on the surface of the other end of the grading bin. According to the rice screening device, the multiple round rods define the cylindrical screening barrel, when the screening barrel rotates, the round rods rotate, rice clamped between the two round rods is discharged, when the rice is screened, the screening barrel is cleaned, the situation that the rice blocks the screening barrel is avoided, and the screening efficiency of the screening barrel is kept; and through angle adjustment of the multiple scrapers, the moving speed of rice in the screening barrel is controlled, the rice screening time is prolonged, the situation that part of small-particle rice is wrapped by large-particle rice and synchronously discharged along with the large-particle rice is avoided, and the rice screening and grading precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rice grading, in particular to a rice grading device and a method. Background Art

[0002] Rice is a food consumed daily by the people. It is made from paddy rice after processes such as cleaning, husking, milling, and finished product sorting. After obtaining the finished rice, due to the different grain sizes of the rice, the processing time and steps required will have slight deviations. In order to ensure that different rice has the best taste, the rice needs to be graded. The rice screening and grading devices widely used in the market are mainly vibrating screens, and the screen vibrates to screen and grade the rice.

[0003] When the existing vibrating screen continuously screens rice, rice is continuously put onto the screen, and rice with larger particles is retained above the screen. The rice with larger particles is discharged from above the screen by the inclination angle of the screen or the rotation of the screen, and the rice with smaller particles passes through the screen and is discharged. In the continuous feeding process of rice, when the rice is piled thickly, some rice with smaller particles will be wrapped by rice with larger particles, and as they are discharged synchronously from above the screen, some small rice particles will exist inside the large rice particles screened above the screen, thereby reducing the accuracy of screening and grading. In addition, when the screen vibrates, due to the spindle shape of the rice, some rice particles will be stuck in the mesh of the screen, resulting in clogging of the screen, making it inconvenient to automatically clean the screen during screening and grading. Summary of the invention

[0004] The object of the present invention is to provide a rice grading device and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rice grading device, comprising:

[0007] A grading bin, wherein a first feeding bin is fixedly installed at one end of the grading bin, and a second feeding bin is fixedly penetrated inside the first feeding bin;

[0008] A screening assembly is movably arranged inside the grading bin, the screening assembly comprises two symmetrical No. 1 fixing rings, a No. 2 fixing ring is fixedly installed on the inner surface of the No. 1 fixing ring through a bracket, a plurality of round rods are rotatably connected between the two No. 1 fixing rings and the two No. 2 fixing rings at equal angles, a No. 1 gear is fixedly installed on both end surfaces of two non-adjacent round rods, a No. 2 gear ring is provided on one side of the two No. 1 fixing rings, a No. 3 gear ring is provided on one side of the No. 2 fixing rings, and a plurality of No. 1 gears are respectively meshed and transmission-connected with the No. 2 gear rings and the No. 3 gear rings at corresponding positions;

[0009] A No. 1 guide assembly is fixedly installed between two No. 1 fixing rings;

[0010] A No. 2 guide assembly, movably arranged inside the No. 2 fixed ring;

[0011] The adjusting component is fixedly mounted on the other end surface of the grading bin.

[0012] Furthermore, a waste outlet is provided at the lower end of the outer surface of the grading bin, a through groove is provided at the other end of the outer surface of the grading bin, a No. 1 motor is fixedly mounted on the surface of the other end of the grading bin, a No. 2 gear is fixedly mounted on the output end of the No. 1 motor, a No. 1 gear ring is fixedly mounted on the outer surface of the No. 1 fixing ring, and the No. 2 gear passes through the through groove and is meshed and transmission-connected with the No. 1 gear ring.

[0013] Furthermore, two ends of the plurality of round rods pass through a No. 1 fixing ring and a No. 2 fixing ring at corresponding positions respectively, a No. 2 gear ring at one end inside the grading bin is fixedly connected to the No. 1 unloading bin through a bracket, and a No. 3 gear ring at one end inside the grading bin is fixedly connected to the No. 2 unloading bin and the grading bin through a bracket.

[0014] Furthermore, the second gear ring and the third gear ring at the other end of the grading bin are fixedly connected by a bracket, and are fixedly connected to the grading bin through the bracket, and a No. 1 spiral blade is fixedly installed on one side surface of the No. 1 fixing ring through a U-shaped rod, and the U-shaped rod passes between two adjacent round rods, and the No. 1 spiral blade is movably fitted with the round rod between the No. 1 fixing ring.

[0015] Further, the first guide component includes:

[0016] Two fixing rods, fixedly connected between the two No. 2 fixing rings;

[0017] A plurality of No. 2 spiral blades are equidistantly fixed on the outer surface of the fixing rod and the inner surface of a No. 2 fixing ring, and the No. 2 spiral blades fixed on the inner surface of the No. 2 fixing ring are movably fitted with the inner wall of the No. 1 lower silo.

[0018] Further, the second guide assembly includes:

[0019] The hollow shaft is rotatably connected to the inside of the grading bin and moves through the grading bin, the No. 1 unloading bin and the No. 2 unloading bin;

[0020] A plurality of rotating rods are equidistantly connected to the outer surface of the hollow rotating shaft and penetrate the inner surface of the hollow rotating shaft;

[0021] A plurality of scrapers are respectively fixedly mounted on the surfaces of one ends of the plurality of rotating rods;

[0022] A plurality of limit sleeves are fixedly installed on the inner surface of the hollow shaft at equal intervals;

[0023] The pull rod is slidably connected between the plurality of limit sleeves.

[0024] Preferably: a plurality of racks are equidistantly fixedly installed on the surface of one side of the pull rod, a No. 4 gear is fixedly installed on the other end of the rotating rod, the No. 4 gear is meshingly transmission connected with the rack at the corresponding position, a No. 2 motor is fixedly installed on the surface of one side of the No. 1 lower silo through a bracket, and a No. 3 gear with two meshing transmission connections is fixedly installed on the output end of the No. 2 motor and one end of the hollow rotating shaft.

[0025] Preferably, the adjustment component comprises:

[0026] The silo is fixedly installed on the surface of the other end of the grading bin;

[0027] A feeding pipe is fixedly connected between the feeding bin and the grading bin;

[0028] The electric push rod is fixedly installed on the outer surface of the feeding pipe through a bracket;

[0029] A fixed sleeve, fixedly installed on the output end of the electric push rod;

[0030] The bearing is fixedly installed inside the fixed sleeve.

[0031] Preferably: a fixing block is fixedly installed on the inner ring of the bearing, one end of the pull rod is fixedly connected to the fixing block, a groove is opened on the outer surface of the discharge pipe, a baffle is slidably inserted in the groove, and a connecting frame is fixedly connected between the baffle and the fixing sleeve.

[0032] The present invention also provides a method for using the rice grading device, which specifically comprises the following steps:

[0033] Step 1: Pour the rice into the silo, and then drop it into the screening cylinder surrounded by multiple round rods between the No. 2 fixed rings. The No. 1 motor runs to drive the No. 2 gear to rotate. Through the meshing transmission with the No. 1 gear ring, the No. 1 fixed ring and the No. 2 fixed ring drive the multiple round rods to rotate, so that the screening cylinder surrounded by the round rods screens the rice. At the same time, during the rotation, the multiple No. 1 gears respectively mesh and rotate on the teeth of the No. 2 gear ring and the inner ring of the No. 3 gear ring, so that the multiple round rods rotate when rotating, and the rice stuck between the two round rods is discharged;

[0034] Step 2: The No. 1 spiral blade and the No. 2 spiral blade rotate synchronously with the No. 1 fixed ring, so that the No. 1 spiral blade moves the rice that has just entered to the middle, so that the scraper can push it to move, and the No. 2 spiral blade scrapes the smaller rice particles that have been screened and fallen into the screening cylinder surrounded by the round rods between the No. 1 fixed ring, so that they move to the No. 1 lower silo, and at the same time, smaller impurities and broken rice grains pass through the gaps between the round rods and are discharged from the waste outlet;

[0035] Step 3: Then the No. 2 motor is turned on, and the No. 3 gear is driven to rotate the hollow shaft, driving the multiple scrapers to rotate. The scrapers are adjusted in inclination angle to scrape the rice inside the screening cylinder surrounded by round rods to move inside the No. 2 lower silo. The rice is screened during the movement, and large grains of rice are discharged from the No. 2 lower silo.

[0036] Step 4: The electric push rod retracts, driving the pull rod to move, causing the rack to rub the No. 4 gear to move, driving the rotating rod and the scraper to rotate, and adjusting the angle of the scraper. The smaller the rotation angle of the scraper, the lower the speed of pushing the rice. At the same time, when the scraper adjusts its angle, the baffle is moved synchronously in the slot through the connecting frame. The greater the angle of the scraper is flipped, the greater the distance the baffle moves, the larger the opening area of ​​the discharge pipe is, and the feeding speed of the rice is adjusted.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. Pour the rice into the silo and load it into the screening cylinder formed by multiple round rods between the No. 2 fixed ring. The No. 1 motor runs to make the No. 1 fixed ring and the No. 2 fixed ring drive the multiple round rods to rotate, so that the screening cylinder formed by the round rods screens the rice. Smaller rice particles fall from between two adjacent round rods. At the same time, during the rotation, multiple No. 1 gears mesh and rotate on the teeth of the No. 2 gear ring and the inner ring of the No. 3 gear ring respectively, so that the multiple round rods rotate during the rotation, and the rice stuck between the two round rods is discharged, so that the screening cylinder is cleaned when the rice is screened, avoiding the blocking of the screening cylinder by rice and maintaining the screening efficiency of the screening cylinder.

[0039] 2. The No. 2 motor runs, and the transmission of the No. 3 gear makes the hollow shaft rotate, driving multiple scrapers to rotate, pushing the rice to discharge it, and the electric push rod shrinks. When the scraper adjusts its angle, the baffle moves synchronously inside the slot to adjust the rice feeding speed to adapt it to the speed of rice screening. The pull rod moves to adjust the angle of the scraper. The smaller the rotation angle of the scraper, the lower the speed of pushing the rice to move. When the scraper rotates to a vertical state, the rice feeding stops, so that the rice is continuously screened inside the screening cylinder surrounded by round rods. Therefore, when the screening cylinder rotates, the rice screening time is increased by controlling the moving speed of the rice inside the screening cylinder, avoiding that some rice with smaller particles will be wrapped by the rice with larger particles and discharged synchronously with them, so that the rice screening and grading accuracy is improved.

[0040] 3. The No. 2 spiral blade scrapes the smaller rice particles that have been screened and fallen into the screening cylinder surrounded by round rods between the No. 1 fixed ring, and moves them to the No. 1 lower hopper. At the same time, smaller impurities and broken rice grains pass through the gaps between the round rods and are discharged from the waste outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 It is a schematic diagram of the internal structure of the grading bin in the present invention;

[0043] Figure 3 It is a schematic diagram of the vertical cross-section structure of the grading bin in the present invention;

[0044] Figure 4 It is a schematic diagram of the cross-sectional structure of the grading bin in the present invention;

[0045] Figure 5 It is a schematic diagram of the split structure of the screening component in the present invention;

[0046] Figure 6 It is a schematic diagram of the vertical cross-section structure of the screening component in the present invention;

[0047] Figure 7 It is a schematic diagram of a partial vertical cross-section structure of the No. 2 guide assembly in the present invention;

[0048] Figure 8 It is a schematic diagram of the vertical cross-section structure of the adjustment component and the feed pipe in the present invention;

[0049] Fig. 9 It is a schematic diagram of the structure of No. 1 unloading bin and No. 2 unloading bin in the present invention.

[0050] In the figure: 1. Classification bin; 101. No. 1 feed bin; 102. No. 2 feed bin; 103. Through slot; 104. Waste outlet; 2. Screening assembly; 201. No. 1 fixing ring; 202. No. 2 fixing ring; 203. No. 1 gear ring; 204. Round rod; 205. No. 1 gear; 206. No. 2 gear ring; 207. No. 3 gear ring; 208. No. 1 spiral blade; 3. No. 1 motor; 301. No. 2 gear; 4. No. 1 guide assembly; 401. Fixed rod; 402. No. 2 No. 1 spiral blade; 5. No. 2 guide assembly; 501. hollow shaft; 502. rotating rod; 503. No. 2 motor; 504. No. 3 gear; 505. limiting sleeve; 506. pull rod; 507. rack; 508. scraper; 509. No. 4 gear; 6. adjustment assembly; 601. silo; 602. discharge pipe; 603. slot; 604. baffle; 605. connecting frame; 606. fixing sleeve; 607. bearing; 608. fixing block; 609. electric push rod. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] See also Figure 1-9 In an embodiment of the present invention, a rice grading device and method include a grading bin 1, a No. 1 feeding bin 101 is fixedly installed at one end of the grading bin 1, and a No. 2 feeding bin 102 is fixedly penetrated inside the No. 1 feeding bin 101; a screening component 2 is movably arranged inside the grading bin 1, and the screening component 2 includes two symmetrical No. 1 fixing rings 201, and a No. 2 fixing ring 202 is fixedly installed on the inner surface of the No. 1 fixing ring 201 through a bracket, and a plurality of round rods 204 are rotatably connected between the two No. 1 fixing rings 201 and the two No. 2 fixing rings 202 at equal angles. A No. 1 gear 205 is fixedly installed on the surfaces of both ends of two non-adjacent round rods 204, a No. 2 gear ring 206 is provided on one side of the two No. 1 fixing rings 201, and a No. 3 gear ring 207 is provided on one side of the No. 2 fixing ring 202. Multiple No. 1 gears 205 are respectively meshed and connected with the No. 2 gear rings 206 and the No. 3 gear rings 207 at corresponding positions, the No. 1 guide assembly 4 is fixedly installed between the two No. 1 fixing rings 201, the No. 2 guide assembly 5 is movably arranged inside the No. 2 fixing ring 202, and the adjustment assembly 6 is fixedly installed on the other end surface of the grading bin 1.

[0053] Specifically, the adjustment component 6 controls the angle of the scraper 508, controls the feeding and screening speed of the rice, and controls the feeding speed of the rice. The screening component 2 screens the rice, and the first guide component 4 guides the smaller particles of rice at the screening location to be discharged.

[0054] Embodiment 1

[0055] like Figure 1-6As shown, in this embodiment, a waste discharge port 104 is provided at the lower end of the outer surface of the grading bin 1, a through groove 103 is provided at the other end of the outer surface of the grading bin 1, a No. 1 motor 3 is fixedly installed on the surface of the other end of the grading bin 1, a No. 2 gear 301 is fixedly installed on the output end of the No. 1 motor 3, a No. 1 fixed ring 201 is fixedly installed on the outer surface of the No. 1 gear ring 203, the No. 2 gear 301 penetrates the through groove 103 and is meshed and connected with the No. 1 gear ring 203; the two ends of a plurality of round rods 204 respectively penetrate the No. 1 fixed ring 201 and the No. 2 fixed ring 202 at corresponding positions, and the No. 2 gear 301 at one end of the inner part of the grading bin 1 is fixedly installed on the outer surface of the No. 1 fixed ring 201. The No. 1 gear ring 206 is fixedly connected to the No. 1 material discharge bin 101 through the bracket, and the No. 3 gear ring 207 at one end inside the grading bin 1 is fixedly connected to the No. 2 material discharge bin 102 and the grading bin 1 through the bracket; the No. 2 gear ring 206 and the No. 3 gear ring 207 at the other end inside the grading bin 1 are fixedly connected through the bracket, and are fixedly connected to the grading bin 1 through the bracket, and a No. 1 spiral blade 208 is fixedly installed on one side surface of the No. 1 fixing ring 201 through a U-shaped rod, and the U-shaped rod passes between two adjacent round rods 204, and the No. 1 spiral blade 208 is movably fitted with the round rod 204 between the No. 1 fixing ring 201.

[0056] In this embodiment, rice is poured into the silo 601, and then falls into the screening cylinder surrounded by multiple round rods 204 between the second fixing ring 202. The first motor 3 is turned on to drive the second gear 301 to rotate. Through the meshing transmission with the first gear ring 203, the first fixing ring 201 and the second fixing ring 202 drive the multiple round rods 204 to rotate, so that the screening cylinder surrounded by the round rods 204 screens the rice, and smaller particles of rice fall from between two adjacent round rods 204. At the same time, during the rotation, multiple first gears 205 meshes and rotates on the teeth of the inner ring of the No. 2 gear ring 206 and the No. 3 gear ring 207, respectively, so that the multiple round rods 204 rotate while rotating, and the rice stuck between the two round rods 204 is discharged, so that the screening cylinder is cleaned during rice screening, avoiding rice blocking the screening cylinder and maintaining the screening efficiency of the screening cylinder. The No. 1 spiral blade 208 and the No. 2 spiral blade 402 rotate synchronously with the No. 1 fixed ring 201, so that the No. 1 spiral blade 208 moves the rice that has just entered to the middle, making it easier for the scraper 508 to push it to move.

[0057] like Figure 3 , Figure 4 and Figure 7As shown, in this embodiment, the second guide assembly 5 includes: a hollow shaft 501 rotatably connected to the inside of the grading bin 1, and movably passes through the grading bin 1, the first unloading bin 101 and the second unloading bin 102, a plurality of rotating rods 502 are equidistantly rotatably connected to the outer surface of the hollow shaft 501, and pass through the inner surface of the hollow shaft 501, a plurality of scrapers 508 are respectively fixedly installed on one end surface of the plurality of rotating rods 502, a plurality of limiting sleeves 505 are equidistantly fixedly installed on the inner surface of the hollow shaft 501, The rod 506 is slidably connected between multiple limit sleeves 505; multiple racks 507 are equidistantly fixedly installed on the surface of one side of the pull rod 506, and a No. 4 gear 509 is fixedly installed on the other end of the rotating rod 502. The No. 4 gear 509 is meshingly and transmission-connected with the rack 507 at the corresponding position; a No. 2 motor 503 is fixedly installed on the surface of one side of the No. 1 discharge bin 101 through a bracket, and a No. 3 gear 504 with two meshing and transmission connections is fixedly installed on the output end of the No. 2 motor 503 and one end of the hollow rotating shaft 501.

[0058] During specific implementation, the No. 2 motor 503 is operated, and the transmission of the No. 3 gear 504 causes the hollow shaft 501 to rotate, driving the multiple scrapers 508 to rotate, pushing the rice to be discharged, and the electric push rod 609 drives the pull rod 506 to move, so that the rack 507 rubs the No. 4 gear 509 to move, driving the rotating rod 502 and the scraper 508 to rotate, and adjusting the angle of the scraper 508. The smaller the rotation angle of the scraper 508, the lower the speed of pushing the rice to move. When the scraper 508 rotates to a vertical state, the rice stops being fed, so that the rice is continuously screened inside the screening cylinder surrounded by the round rods 204. Therefore, when the screening cylinder rotates, the moving speed of the rice inside the screening cylinder is controlled to increase the screening time of the rice, avoid that some rice with smaller particles will be wrapped by the rice with larger particles and discharged synchronously with them, and improve the rice screening and grading accuracy.

[0059] like Figure 3 and Figure 4 As shown, in this embodiment, the No. 1 guide assembly 4 includes: two fixed rods 401 fixedly connected between two No. 2 fixed rings 202, a plurality of No. 2 spiral blades 402 are equidistantly fixedly installed on the outer surface of the fixed rods 401 and the inner surface of a No. 2 fixed ring 202, and the No. 2 spiral blades 402 fixed on the inner surface of the No. 2 fixed ring 202 are movably fitted with the inner wall of the No. 1 lower bin 101.

[0060] In specific implementation, the No. 2 spiral blade 402 scrapes the smaller rice particles that are screened and fall into the screening cylinder surrounded by the round rods 204 between the No. 1 fixing ring 201, and moves them to the No. 1 lower hopper 101, while allowing smaller impurities and broken rice grains to pass through the gaps between the round rods 204 and be discharged from the waste outlet 104.

[0061] Embodiment 2

[0062] On the basis of the first embodiment, in order to make up for the problem that the rice feeding speed in the first embodiment is not convenient to adapt to its screening speed, which easily leads to the problem of rice accumulation.

[0063] like Figure 2 and Figure 8 As shown, in this embodiment, the adjustment component 6 includes: a silo 601 is fixedly installed on the other end surface of the grading silo 1, a feed pipe 602 is fixedly connected between the silo 601 and the grading silo 1, an electric push rod 609 is fixedly installed on the outer surface of the feed pipe 602 through a bracket, a fixed sleeve 606 is fixedly installed on the output end of the electric push rod 609, and a bearing 607 is fixedly installed inside the fixed sleeve 606; a fixed block 608 is fixedly installed on the inner ring of the bearing 607, one end of the pull rod 506 is fixedly connected to the fixed block 608, a slot 603 is opened on the outer surface of the feed pipe 602, a baffle 604 is slidably inserted inside the slot 603, and a connecting frame 605 is fixedly connected between the baffle 604 and the fixed sleeve 606.

[0064] During specific implementation, when the electric push rod 609 contracts and the scraper 508 adjusts its angle, the baffle 604 is synchronously moved inside the slot 603 through the connecting frame 605. The greater the angle of the scraper 508 is flipped, the greater the distance the baffle 604 moves, so that the opening area of ​​the discharge pipe 602 is larger, and the feeding speed of the rice is adjusted to adapt to the speed of rice screening.

[0065] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rice grading device, characterized in that: include: A grading bin (1), wherein a first material discharge bin (101) is fixedly mounted at one end of the grading bin (1), and a second material discharge bin (102) is fixedly penetrated inside the first material discharge bin (101); A screening assembly (2) is movably arranged inside the grading bin (1), the screening assembly (2) comprising two symmetrical No. 1 fixing rings (201), a No. 2 fixing ring (202) being fixedly mounted on the inner surface of the No. 1 fixing ring (201) via a bracket, a plurality of round rods (204) being rotatably connected at equal angles between the two No. 1 fixing rings (201) and the two No. 2 fixing rings (202), a No. 1 gear (205) being fixedly mounted on both end surfaces of two non-adjacent round rods (204), a No. 2 gear ring (206) being arranged on one side of the two No. 1 fixing rings (201), a No. 3 gear ring (207) being arranged on one side of the No. 2 fixing ring (202), and a plurality of No. 1 gears (205) being meshingly connected to the No. 2 gear ring (206) and the No. 3 gear ring (207) at corresponding positions respectively; A No. 1 guide assembly (4), fixedly mounted between the two No. 1 fixing rings (201); A second guide assembly (5), movably disposed inside the second fixing ring (202); The adjustment component (6) is fixedly mounted on the other end surface of the grading bin (1).

2. A rice grading device according to claim 1, characterized in that: A waste discharge port (104) is provided at the lower end of the outer surface of the grading bin (1), a through slot (103) is provided at the other end of the outer surface of the grading bin (1), a No. 1 motor (3) is fixedly mounted on the other end surface of the grading bin (1), a No. 2 gear (301) is fixedly mounted on the output end of the No. 1 motor (3), a No. 1 gear ring (203) is fixedly mounted on the outer surface of the No. 1 fixing ring (201), and the No. 2 gear (301) passes through the through slot (103) and is meshed and transmission-connected with the No. 1 gear ring (203).

3. A rice grading device according to claim 1, characterized in that: The two ends of the plurality of round rods (204) respectively penetrate a No. 1 fixing ring (201) and a No. 2 fixing ring (202) at corresponding positions; the No. 2 gear ring (206) at one end inside the grading bin (1) is fixedly connected to the No. 1 material discharge bin (101) via a bracket; and the No. 3 gear ring (207) at one end inside the grading bin (1) is fixedly connected to the No. 2 material discharge bin (102) and the grading bin (1) via a bracket.

4. A rice grading device according to claim 1, characterized in that: The second gear ring (206) and the third gear ring (207) at the other end of the grading bin (1) are fixedly connected via a bracket and are fixedly connected to the grading bin (1) via the bracket; a first spiral blade (208) is fixedly mounted on one side surface of the first fixing ring (201) via a U-shaped rod, and the U-shaped rod passes between two adjacent round rods (204); the first spiral blade (208) is movably fitted to the round rod (204) between the first fixing ring (201).

5. A rice grading device according to claim 1, characterized in that: The first guide assembly (4) comprises: Two fixing rods (401) are fixedly connected between the two No. 2 fixing rings (202); A plurality of No. 2 spiral blades (402) are equidistantly fixedly mounted on the outer surface of the fixing rod (401) and the inner surface of a No. 2 fixing ring (202), and the No. 2 spiral blades (402) fixed on the inner surface of the No. 2 fixing ring (202) are movably fitted with the inner wall of the No. 1 lower bin (101).

6. A rice grading device according to claim 1, characterized in that: The second guide assembly (5) comprises: A hollow rotating shaft (501) is rotatably connected to the interior of the grading bin (1) and moves through the grading bin (1), the first material discharge bin (101) and the second material discharge bin (102); A plurality of rotating rods (502) are equidistantly connected to the outer surface of the hollow rotating shaft (501) and penetrate the inner surface of the hollow rotating shaft (501); A plurality of scrapers (508) are respectively fixedly mounted on one end surface of a plurality of rotating rods (502); A plurality of limiting sleeves (505) are fixedly installed at equal intervals on the inner surface of the hollow rotating shaft (501); The pull rod (506) is slidably connected between the plurality of limiting sleeves (505).

7. A rice grading device according to claim 6, characterized in that: A plurality of racks (507) are fixedly installed at equal intervals on one side surface of the pull rod (506), a No. 3 gear (504) is fixedly installed on the other end of the rotating rod (502), and the No. 3 gear (504) is meshingly connected to the rack (507) at the corresponding position. A No. 2 motor (503) is fixedly installed on one side surface of the No. 1 discharge bin (101) via a bracket, and two No. 3 gears (504) that are meshingly connected are fixedly installed between the output end of the No. 2 motor (503) and one end of the hollow rotating shaft (501).

8. A rice grading device according to claim 6, characterized in that: The regulating component (6) comprises: The material bin (601) is fixedly mounted on the other end surface of the grading bin (1); A feeding pipe (602) is fixedly connected between the feeding bin (601) and the grading bin (1); An electric push rod (609) is fixedly mounted on the outer surface of the feeding tube (602) via a bracket; A fixed sleeve (606) is fixedly mounted on the output end of the electric push rod (609); The bearing (607) is fixedly mounted inside the fixing sleeve (606).

9. A rice grading device according to claim 8, characterized in that: A fixed block (608) is fixedly installed on the inner ring of the bearing (607), one end of the pull rod (506) is fixedly connected to the fixed block (608), a groove (603) is opened on the outer surface of the discharge pipe (602), a baffle (604) is slidably inserted inside the groove (603), and a connecting frame (605) is fixedly connected between the baffle (604) and the fixed sleeve (606).

10. The method for using a rice grading device according to claim 1, characterized in that: The method specifically comprises the following steps: Step 1: Pour the rice into the silo (601), and then drop it into the screening cylinder surrounded by a plurality of round rods (204) between the second fixing ring (202). The first motor (3) is operated to drive the second gear (301) to rotate. Through meshing transmission with the first gear ring (203), the first fixing ring (201) and the second fixing ring (202) drive the plurality of round rods (204) to rotate, so that the screening cylinder surrounded by the round rods (204) screens the rice. At the same time, during the rotation, the plurality of first gears (205) respectively mesh and rotate on the teeth of the inner rings of the second gear ring (206) and the third gear ring (207), so that the plurality of round rods (204) rotate on themselves during the rotation, and the rice stuck between the two round rods (204) is discharged. Step 2: The first spiral blade (208) and the second spiral blade (402) rotate synchronously with the first fixed ring (201), so that the first spiral blade (208) moves the rice that has just entered to the middle, so that the scraper (508) can push it to move, and the second spiral blade (402) scrapes the smaller rice particles that are screened and fall into the screening cylinder surrounded by the round rods (204) between the first fixed ring (201), so that they move to the first lower hopper (101), and at the same time, smaller impurities and broken rice grains pass through the gaps between the round rods (204) and are discharged from the waste outlet (104); Step 3: Then the No. 2 motor (503) is operated, and the No. 3 gear (504) is driven to rotate the hollow shaft (501), thereby driving the plurality of scrapers (508) to rotate, and adjusting the inclination angle of the scrapers (508) to scrape the rice inside the screening cylinder surrounded by the round rods (204) to move inside the No. 2 lower bin (102), and screening is performed during the rice movement, and large grains of rice are discharged from the No. 2 lower bin (102); Step 4: The electric push rod (609) contracts, driving the pull rod (506) to move, causing the rack (507) to rub the fourth gear (509) to move, driving the rotating rod (502) and the scraper (508) to rotate, and adjusting the angle of the scraper (508). The smaller the rotation angle of the scraper (508), the lower the speed of pushing the rice to move. At the same time, when the scraper (508) adjusts its angle, the baffle (604) is synchronously moved inside the slot (603) through the connecting frame (605). The greater the angle of the scraper (508) is flipped, the greater the distance the baffle (604) moves out, so that the opening area of ​​the discharge pipe (602) is larger, and the feeding speed of the rice is adjusted.

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