Color sorter for rice processing

Abstract

The invention discloses a color sorter for rice processing, which relates to the technical field of rice processing, and comprises a base, a color sorting mechanism, an alternate screening mechanism and a sundry discharge mechanism, the color sorting mechanism comprises a supporting inclined frame, and the supporting inclined frame is arranged at the top end of the base; and the alternate screening mechanism comprises a screening frame, and the screening frame is arranged on the upper portion of the middle of the supporting inclined frame. According to the rice screening device, the screening hoppers on the upper layer and the lower layer are driven to alternately rotate at regular time, when one screening hopper is horizontal, the other screening hopper is inclined, and when the screening hoppers are in the horizontal state, rice falling from the discharging chute can be screened, so that large-size impurities mixed in the discharging chute are isolated in the screening hoppers, and the screening efficiency is improved. And the screened rice enters the blanking chute through the receiving hopper and then is subjected to color sorting, so that the influence of large-size impurities on color sorting judgment and the discharge of defective products during rice color sorting are avoided, and the rice color sorting accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rice processing, and particularly to a color sorter for rice processing. Background Art

[0002] A rice color sorter is a machine that automatically sorts out different-color particles in rice based on the differences in the optical properties of rice by using optoelectronic technology, so as to improve the quality of rice and remove impurities. The Chinese patent application with the application number 202010477909.1 discloses a "color sorter for rice processing, which includes a storage room, a carbon dioxide recovery unit, a carbon dioxide storage unit, and a color sorter. The storage room is connected to a temperature control system; the paddy to be processed into rice is stored in the storage room for drying. When drying, dry ice is placed in the storage room and the storage room is closed; as the dry ice sublimes, the storage room will present a low-temperature state to prevent the paddy from spoiling and deteriorating; after the dry ice sublimes, the carbon dioxide and air in the storage room are discharged through the carbon dioxide recovery unit. After separating the air, the carbon dioxide is pressed into a carbon dioxide storage tank, making the storage room in a vacuum state. In a vacuum state, the boiling point of water decreases and the evaporation rate of water increases, so that the paddy can be quickly dried at a low temperature; during the storage process, the carbon dioxide in the carbon dioxide storage tank is introduced into the storage room to isolate the paddy from air and prevent rice weevils from growing."

[0003] This technical solution only solves the problem that the rice is not dried before color sorting. However, among the rice for color sorting, there are not only different-color particles mixed in, such as rice particles with quality defects and small-volume stone particles, but also large-volume sundries. When such large-volume sundries are color sorted together with normal-sized rice particles, they are likely to block the rice particles and are not easy to discharge, resulting in a decrease in the color sorting accuracy of the rice and affecting the processing efficiency of the rice. Summary of the Invention

[0004] The purpose of the present invention is to provide a color sorter for rice processing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A color sorter for rice processing includes a base, and also includes a color sorting mechanism, an alternating screening mechanism, and a sundry discharging mechanism:

[0006] The color sorting mechanism, the color sorting mechanism includes a support inclined frame, and the support inclined frame is arranged at the top end of the base;

[0007] The alternating screening mechanism, the alternating screening mechanism includes a screening frame, and the screening frame is arranged at the upper middle part of the support inclined frame;

[0008] Debris discharging mechanism, the debris discharging mechanism includes a horizontal frame, and there are two horizontal frames both arranged at the upper middle part of the supporting inclined frame.

[0009] Preferably, the color sorting mechanism includes a supporting horizontal frame, a blanking chute, a material rack, a material cylinder, a feeding device and a color sorting device. The supporting horizontal frame is fixedly installed at the top of the supporting inclined frame. There are several blanking chutes and they are evenly and fixedly installed in the supporting horizontal frame. The material rack is fixedly installed at the top of the supporting horizontal frame. The material cylinder is fixedly installed in the material rack. The feeding device is arranged at the top of the supporting horizontal frame and below the material cylinder. The color sorting device is arranged at the lower middle part of the supporting inclined frame, and a debris collection box is fixedly installed at the top of the color sorting device.

[0010] Preferably, the alternating screening mechanism includes a rotating shaft, a rotating bucket, a screening bucket, a receiving bucket and a connecting plate. There are two rotating shafts and they are respectively movably installed at the top and bottom of the screening frame. There are two groups of rotating buckets, and each group has several. The bottoms of the two groups of rotating buckets are respectively fixedly sleeved on the two rotating shafts. The screening bucket is fixedly installed at one end of the rotating bucket close to the blanking chute. The receiving bucket is fixedly installed at the bottom of the screening bucket. The connecting plate is fixedly installed inside the screening frame.

[0011] Preferably, the alternating screening mechanism includes a first motor, a first gear, a second gear, a limiting groove and a rack. The first motor is fixedly installed in the middle of the side of the connecting plate away from the rotating bucket. The output shaft of the first motor passes through the connecting plate. The first gear is movably installed inside the screening frame and is located between one end of the rotating shaft and the connecting plate. The first gear is fixedly sleeved on the output shaft of the first motor. There are two second gears and they are respectively fixedly sleeved on the ends of the two rotating shafts close to the first gear. There are two limiting grooves and they are respectively fixedly installed inside the screening frame and on both sides of the first gear. There are two racks and they are respectively movably installed in the two limiting grooves. The two racks are respectively movably connected with the two second gears by meshing. The first gear is movably connected with the two racks by meshing.

[0012] Preferably, the debris discharging mechanism includes support columns, threaded rods and guide frames. There are two groups of support columns and each group has several, and they are respectively evenly and fixedly installed at one ends of the two horizontal frames away from the supporting inclined frame. One end of the threaded rod away from the supporting inclined frame is movably installed at the top of the support column. There are several groups of guide frames and they are respectively evenly and fixedly installed on the two horizontal frames.

[0013] Preferably, the sundry discharging mechanism includes a moving frame, a translation frame and a screw sleeve. There are several moving frames, and their tops are respectively movably installed in each group of guiding frames. There are several translation frames, and they are respectively movably installed in each moving frame. There are several screw sleeves, and they are respectively fixedly installed in the middle of the tops of each translation frame. The screw sleeves are movably sleeved on each threaded rod through threads.

[0014] Preferably, the sundry discharging mechanism includes a support plate, a second motor, a first belt and a second belt. There are two support plates, and they are respectively fixedly installed on two horizontal frames. There are two second motors, and they are respectively fixedly installed on the tops of the two support plates. There are two first belts, and they are respectively movably sleeved on one ends of two groups of threaded rods close to the support column. There are two second belts. One ends of them are respectively movably sleeved on the output shafts of the two second motors, and the other ends are respectively movably sleeved on one of the two groups of threaded rods close to the second motor.

[0015] Preferably, the sundry discharging mechanism includes a partition plate, a rotating seat, a connecting rod and a return spring. There are several partition plates, and their bottoms are respectively movably installed at the bottoms of each screening hopper close to the rotating hopper side. There are two rotating seats in each screening hopper, and they are respectively movably installed at the left and right tops of the screening hopper close to the rotating hopper end. There are two connecting rods in each screening hopper, and they are respectively movably installed in the two rotating seats. One end of the connecting rod close to the partition plate is movably installed on the side of the partition plate close to the screening hopper. The end of the connecting rod far from the partition plate is fixedly installed with a baffle. There are two return springs in each screening hopper, and they are respectively movably sleeved on the two connecting rods and located between the rotating seat and the baffle.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By designing and installing an alternating screening mechanism, the upper and lower layers of screening hoppers are driven to rotate alternately at regular intervals. When one screening hopper is horizontal, the other screening hopper is inclined. When the screening hopper is in the horizontal state, the rice falling from the blanking chute can be screened, so that the large-volume sundries mixed in the blanking chute are isolated in the screening hopper. The screened rice then enters the blanking chute through the receiving hopper and then undergoes color sorting, avoiding the influence of large-volume sundries on color sorting judgment and defective product discharge during rice color sorting, and improving the accuracy of rice color sorting.

[0018] 2. The present invention is designed and installed with a sundry discharging mechanism. After the screening hopper is tilted, the driving moving frame is moved to drive the partition plate to rotate. When the partition plate rotates to be flush with the inner bottom end of the screening hopper, a large number of large-volume sundries accumulated in the screening hopper can fall into the sundry collection box, enabling the two screening hoppers to automatically discharge the accumulated sundries during the alternating screening work, so that the two screening hoppers can carry out the screening work for a long time, improving the efficiency of rice color sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the connection between the alternating screening mechanism and the sundry discharging mechanism provided by an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the alternating screening mechanism provided by an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the sundry discharging mechanism provided by an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the connection between the moving frame and the translation frame provided by an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the connection between the partition plate, the rotating seat and the connecting rod provided by an embodiment of the present invention.

[0025] In the figure: 1. Base; 2. Color sorting mechanism; 201. Support inclined frame; 202. Support cross frame; 203. Feeding chute; 204. Material rack; 205. Material cylinder; 206. Feeding device; 207. Color sorting device; 3. Alternating screening mechanism; 301. Screening rack; 302. Rotating shaft; 303. Rotating hopper; 304. Screening hopper; 305. Receiving hopper; 306. Connecting plate; 307. First motor; 308. First gear; 309. Second gear; 310. Limiting groove; 311. Rack; 4. Sundry discharging mechanism; 401. Horizontal frame; 402. Support column; 403. Threaded rod; 404. Guide frame; 405. Moving frame; 406. Translation frame; 407. Screw sleeve; 408. Support plate; 409. Second motor; 410. First belt; 411. Second belt; 412. Partition plate; 413. Rotating seat; 414. Connecting rod; 415. Return spring; 5. Sundry collection box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] A color sorter for rice processing in this embodiment, as Figures 1 to 6 shown, includes a base 1, and also includes a color sorting mechanism 2, an alternating screening mechanism 3, and a foreign matter discharging mechanism 4;

[0028] The color sorting mechanism 2, the color sorting mechanism 2 includes a support inclined frame 201, and the support inclined frame 201 is arranged at the top of the base 1.

[0029] In this embodiment, as Figure 1 shown, the color sorting mechanism 2 includes a support cross frame 202, a blanking chute 203, a material rack 204, a material cylinder 205, a feeding device 206, and a color sorting device 207. The support cross frame 202 is fixedly installed at the top of the support inclined frame 201. There are several blanking chutes 203 and they are evenly fixedly installed in the support cross frame 202. The material rack 204 is fixedly installed at the top of the support cross frame 202. The material cylinder 205 is fixedly installed in the material rack 204. The feeding device 206 is arranged at the top of the support cross frame 202 and below the material cylinder 205. The color sorting device 207 is arranged at the middle and lower part of the support inclined frame 201. A foreign matter collection box 5 is fixedly installed at the top of the color sorting device 207;

[0030] The support cross frame 202, the screening frame 301, and the horizontal frame 401 are fixedly supported by the support inclined frame 201. The blanking chute 203 and the material rack 204 are supported by the support cross frame 202. The material cylinder 205 is installed in the material rack 204. The rice to be color sorted is placed in the feeding cylinder 205. The rice in the material cylinder 205 falls into the feeding device 206. The rice is conveyed to the top of the blanking chute 203 through the feeding device 206, and the rice falls along the blanking chute 203.

[0031] On other levels, this embodiment also provides an alternating screening mechanism 3 for alternately screening large-volume foreign matters mixed in the rice before color sorting, as Figures 1 to 3 shown, the alternating screening mechanism 3, the alternating screening mechanism 3 includes a screening frame 301, and the screening frame 301 is arranged at the middle and upper part of the support inclined frame 201.

[0032] In this embodiment, as Figure 3As shown in the figure, the alternating screening mechanism 3 includes a rotating shaft 302, a rotating hopper 303, a screening hopper 304, a material receiving hopper 305 and a connecting plate 306. There are two rotating shafts 302, which are respectively movably installed at the top and bottom of the screening frame 301. There are two groups of rotating hoppers 303, and each group has several. The bottoms of the two groups of rotating hoppers 303 are respectively fixedly sleeved on the two rotating shafts 302. The screening hopper 304 is fixedly installed at one end of the rotating hopper 303 close to the blanking chute 203. The material receiving hopper 305 is fixedly installed at the bottom of the screening hopper 304. The connecting plate 306 is fixedly installed inside the screening frame 301;

[0033] The large-volume sundries mixed in the rice falling from the blanking chute 203 are blocked by the screening hopper 304, and the large-volume sundries are blocked in the screening hopper 304 by the partition plate 412. The rice screened in the screening hopper 304 falls into the material receiving hopper 305, and then the rice continues to fall on the blanking chute 203 through the material receiving hopper 305.

[0034] In this embodiment, as Figure 3 shown, the alternating screening mechanism 3 includes a first motor 307, a first gear 308, a second gear 309, a limiting groove 310 and a rack 311. The first motor 307 is fixedly installed in the middle of the side of the connecting plate 306 away from the rotating hopper 303. The output shaft of the first motor 307 passes through the connecting plate 306. The first gear 308 is movably installed inside the screening frame 301 and is located between one end of the rotating shaft 302 and the connecting plate 306. The first gear 308 is fixedly sleeved on the output shaft of the first motor 307. There are two second gears 309, which are respectively fixedly sleeved on the two rotating shafts 302 close to the first gear 308. There are two limiting grooves 310, which are respectively fixedly installed inside the screening frame 301 and are located on both sides of the first gear 308. There are two racks 311, which are respectively movably installed in the two limiting grooves 310. The two racks 311 are respectively movably connected with the two second gears 309 through meshing. The first gear 308 is movably connected with the two racks 311 through meshing;

[0035] The first motor 307 drives the first gear 308 to rotate. The first gear 308 drives the two racks 311 to move along the limiting groove 310 at the same time. When the two racks 311 move at the same time, the two rotating shafts 302 are driven to rotate through the second gear 309. When the rotating shafts 302 rotate, the screening hopper 304 is driven to rotate simultaneously with the rotating shafts 302 through the rotating hopper 303. At this time, the upper screening hopper 304 rotates from the horizontal state to the inclined state, while the lower screening hopper 304 rotates from the inclined state to the horizontal state, so that the two screening hoppers 304 can perform screening alternately.

[0036] On other levels, this embodiment also provides a sundry discharging mechanism 4 for discharging the blocked large-volume sundries. AsFigures 2 to 6 As shown, the sundry discharging mechanism 4 includes a horizontal frame 401. There are two horizontal frames 401, both of which are arranged at the upper middle part of the supporting inclined frame 201.

[0037] In this embodiment, as Figure 4 shown, the sundry discharging mechanism 4 includes support columns 402, threaded rods 403 and guide frames 404. There are two groups of support columns 402, and each group has several support columns 402. They are respectively and evenly fixedly installed at one end of the two horizontal frames 401 away from the supporting inclined frame 201. One end of the threaded rod 403 away from the supporting inclined frame 201 is movably installed at the top of the support column 402. There are several groups of guide frames 404, and they are respectively and evenly fixedly installed on the two horizontal frames 401;

[0038] The threaded rod 403 is supported by the support column 402, and the guide frame 404 is installed through the horizontal frame 401.

[0039] In this embodiment, as Figure 5 shown, the sundry discharging mechanism 4 includes moving frames 405, translation frames 406 and screw sleeves 407. There are several moving frames 405, and the tops of them are respectively movably installed in each group of guide frames 404. There are several translation frames 406, and they are respectively movably installed in each moving frame 405. There are several screw sleeves 407, and they are respectively fixedly installed at the middle of the top of each translation frame 406. The screw sleeves 407 are movably sleeved on each threaded rod 403 through threads;

[0040] The screw sleeve 407 drives the translation frame 406 to move away from the blanking chute 203. When the translation frame 406 translates, it drives the moving frame 405 to move along the guide frame 404, and drives the partition plate 412 to rotate through the moving moving frame 405.

[0041] In this embodiment, as Figure 4 shown, the sundry discharging mechanism 4 includes support plates 408, second motors 409, first belts 410 and second belts 411. There are two support plates 408, and they are respectively fixedly installed on the two horizontal frames 401. There are two second motors 409, and they are respectively fixedly installed at the top of the two support plates 408. There are two first belts 410, and they are respectively movably sleeved on one end of the two groups of threaded rods 403 close to the support column 402. There are two second belts 411. One end of each second belt 411 is respectively movably sleeved on the output shafts of the two second motors 409, and the other end is respectively movably sleeved on one of the two groups of threaded rods 403 close to the second motor 409;

[0042] One threaded rod 403 is driven to rotate through the first belt 410, and the other threaded rods 403 on the same layer are driven to rotate simultaneously through the second belt 411. When the threaded rod 403 rotates, the translation frame 406 is driven to move away from the blanking chute 203 through the screw sleeve 407.

[0043] In this embodiment, as Figure 6 shown, the sundry discharge mechanism 4 includes a partition plate 412, a rotating seat 413, a connecting rod 414, and a return spring 415. There are several partition plates 412, and the bottom ends are respectively movably installed at the bottom ends of each screening hopper 304 near the side of the rotating hopper 303. Two rotating seats 413 are provided in each screening hopper 304, and are respectively movably installed at the left and right top ends of the screening hopper 304 near one end of the rotating hopper 303. Two connecting rods 414 are provided in each screening hopper 304, and are respectively movably installed in the two rotating seats 413. One end of the connecting rod 414 close to the partition plate 412 is movably installed on the side of the partition plate 412 close to the screening hopper 304. A baffle is fixedly installed at the end of the connecting rod 414 far from the partition plate 412. Two return springs 415 are provided in each screening hopper 304, and are respectively movably sleeved on the two connecting rods 414, and are located between the rotating seat 413 and the baffle;

[0044] The moving partition plate 412 is driven to rotate by the moving frame 405. Until the partition plate 412 rotates to be flush with the surface of the screening hopper 304, the large-volume sundries accumulated in the screening hopper 304 fall into the sundry collection box 5 from the partition plate 412. When the partition plate 412 rotates, it drives the connecting rod 414 to move simultaneously and drives the rotating seat 413 to rotate simultaneously, so that the return spring 415 is compressed. Before the upper screening hopper 304 returns from the inclined state to the horizontal state, the second motor 409 is used to drive the moving frame 405 to reset. During this process, through the elastic force of the return spring 415, the partition plate 412 is driven to reset by the connecting rod 414, so that the partition plate 412 is perpendicular to the inner bottom surface of the screening hopper 304.

[0045] Working principle: When the present invention is in use, the rice to be color-selected is placed in the feeding cylinder 205. The rice in the feeding cylinder 205 falls into the feeding device 206, and the rice is conveyed to the top end of the blanking chute 203 by the feeding device 206, and the rice falls along the blanking chute 203;

[0046] Before the rice falling from the top of the blanking chute 203 is color-sorted, it first falls into the screening hopper 304 located in the upper layer. The large-volume sundries that fall along the blanking chute 203 simultaneously with the rice are first screened out by the screening hopper 304 and are retained in the screening hopper 304. The large-volume sundries are blocked in the screening hopper 304 by the partition plate 412. The rice screened out in the screening hopper 304 falls into the receiving hopper 305, and then through the receiving hopper 305, the rice continues to fall on the blanking chute 203. At this time, when the rice falls along the blanking chute 203, it bypasses the screening hopper 304 in the lower layer and then enters the area of the color-sorting device 207, and is precisely color-sorted by the color-sorting device 207. During this process, the screening hopper 304 screens the sundries from the rice to be color-sorted, avoiding the influence of large-volume sundries on the precise color-sorting during color-sorting and improving the precision of rice color-sorting;

[0047] When the upper screening hopper 304 has been screening for a period of time, a large amount of large-volume sundries will accumulate on its surface, which will affect the subsequent screening effect. At this time, the first motor 307 is started. The first motor 307 drives the first gear 308 to rotate. The first gear 308 drives two racks 311 to move simultaneously along the limit groove 310. When the two racks 311 move simultaneously, the second gear 309 drives two rotating shafts 302 to rotate. When the rotating shafts 302 rotate, the rotating hopper 303 drives the screening hopper 304 to rotate simultaneously with the rotating shafts 302. At this time, the upper screening hopper 304 rotates from the horizontal state to the inclined state, and the lower screening hopper 304 rotates from the inclined state to the horizontal state, so that the two screening hoppers 304 can alternately perform screening;

[0048] After the screening hopper 304 located in the upper layer rotates to the inclined state, the second motor 409 located in the upper layer is started. When the second motor 409 rotates, it drives a threaded rod 403 to rotate through the first belt 410, and drives other threaded rods 403 of the same layer to rotate simultaneously through the second belt 411. When the threaded rod 403 rotates, the translation frame 406 is driven by the screw sleeve 407 to move away from the blanking chute 203. When the translation frame 406 translates, it drives the moving frame 405 to move along the guide frame 404. The moving moving frame 405 drives the partition plate 412 to rotate until the partition plate 412 rotates to be flush with the surface of the screening hopper 304, and the large-volume sundries accumulated in the screening hopper 304 fall into the sundry collection box 5 from the partition plate 412;

[0049] When the partition plate 412 rotates, it drives the connecting rod 414 to move simultaneously and drives the rotating seat 413 to rotate simultaneously, so that the return spring 415 is compressed. Before the upper screening hopper 304 returns from the inclined state to the horizontal state, the moving frame 405 is driven to reset by the second motor 409. During this process, under the elastic force of the return spring 415, the partition plate 412 is driven to reset by the connecting rod 414, so that the partition plate 412 is perpendicular to the inner bottom surface of the screening hopper 304.

[0050] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0051] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A color sorter for rice processing, including a base (1), characterized in that, It also includes a color sorting mechanism (2), an alternating screening mechanism (3), and a foreign matter discharging mechanism (4): The color sorting mechanism (2), the color sorting mechanism (2) includes a support inclined frame (201), and the support inclined frame (201) is arranged at the top end of the base (1); The alternating screening mechanism (3), the alternating screening mechanism (3) includes a screening frame (301), and the screening frame (301) is arranged at the upper middle part of the support inclined frame (201); The foreign matter discharging mechanism (4), the foreign matter discharging mechanism (4) includes a horizontal frame (401), and there are two horizontal frames (401) both arranged at the upper middle part of the support inclined frame (201).

2. The color sorter for rice processing according to claim 1, wherein: The color sorting mechanism (2) includes a support horizontal frame (202), a blanking chute (203), a material rack (204), a material cylinder (205), a feeding device (206), and a color sorting device (207). The support horizontal frame (202) is fixedly installed at the top end of the support inclined frame (201). There are several blanking chutes (203) and they are uniformly fixedly installed in the support horizontal frame (202). The material rack (204) is fixedly installed at the top end of the support horizontal frame (202). The material cylinder (205) is fixedly installed in the material rack (204). The feeding device (206) is arranged at the top end of the support horizontal frame (202) and below the material cylinder (205). The color sorting device (207) is arranged at the lower middle part of the support inclined frame (201), and a foreign matter collection box (5) is fixedly installed at the top end of the color sorting device (207).

3. The color sorter for rice processing according to claim 2, wherein: The alternating screening mechanism (3) includes a rotating shaft (302), a rotating bucket (303), a screening bucket (304), a receiving bucket (305), and a connecting plate (306). There are two rotating shafts (302) and they are respectively movably installed at the top end and the bottom end of the screening frame (301). There are two groups of rotating buckets (303), and each group has several. The bottom ends of the two groups of rotating buckets (303) are respectively fixedly sleeved on the two rotating shafts (302). The screening bucket (304) is fixedly installed at one end of the rotating bucket (303) close to the blanking chute (203). The receiving bucket (305) is fixedly installed at the bottom end of the screening bucket (304). The connecting plate (306) is fixedly installed inside the screening frame (301).

4. A color sorter for rice processing according to claim 3, characterized in that: The alternating screening mechanism (3) includes a first motor (307), a first gear (308), a second gear (309), a limiting groove (310) and a rack (311). The first motor (307) is fixedly installed in the middle of the side of the connecting plate (306) away from the rotating bucket (303). The output shaft of the first motor (307) passes through the connecting plate (306). The first gear (308) is movably installed inside the screening frame (301) and is located between one end of the rotating shaft (302) and the connecting plate (306). The first gear (308) is fixedly sleeved on the output shaft of the first motor (307). There are two second gears (309), which are respectively fixedly sleeved on one end of the two rotating shafts (302) close to the first gear (308). There are two limiting grooves (310), which are respectively fixedly installed inside the screening frame (301) and are located on both sides of the first gear (308). There are two racks (311), which are respectively movably installed in the two limiting grooves (310). The two racks (311) are respectively movably connected with the two second gears (309) through meshing. The first gear (308) is movably connected with the two racks (311) through meshing.

5. The color sorter for rice processing according to claim 4, wherein: The sundry discharging mechanism (4) includes support columns (402), threaded rods (403) and guide frames (404). There are two groups of support columns (402), and each group has several, and they are respectively evenly and fixedly installed at one end of the two horizontal frames (401) away from the support inclined frame (201). One end of the threaded rod (403) away from the support inclined frame (201) is movably installed at the top of the support column (402). There are several groups of guide frames (404), and they are respectively evenly and fixedly installed on the two horizontal frames (401).

6. The color sorter for rice processing according to claim 5, characterized in that: The sundry discharging mechanism (4) includes moving frames (405), translation frames (406) and screw sleeves (407). There are several moving frames (405), and their tops are respectively movably installed in each group of guide frames (404). There are several translation frames (406), and they are respectively movably installed in each moving frame (405). There are several screw sleeves (407), and they are respectively fixedly installed in the middle of the top of each translation frame (406). The screw sleeves (407) are movably sleeved on each threaded rod (403) through threads.

7. The color sorter for rice processing according to claim 6, wherein: The sundry discharging mechanism (4) includes a support plate (408), a second motor (409), a first belt (410) and a second belt (411). There are two support plates (408) which are respectively and fixedly installed on two horizontal frames (401). There are two second motors (409) which are respectively and fixedly installed at the tops of the two support plates (408). There are two first belts (410) which are respectively movably sleeved on one ends of two groups of threaded rods (403) close to the support column (402). There are two second belts (411), one ends of which are respectively movably sleeved on the output shafts of the two second motors (409), and the other ends of which are respectively movably sleeved on one of the two groups of threaded rods (403) close to the second motor (409).

8. The color sorter for rice processing according to claim 7, characterized in that: The sundry discharging mechanism (4) includes a partition plate (412), a rotating seat (413), a connecting rod (414) and a return spring (415). There are several partition plates (412), and the bottom ends of which are respectively and movably installed at the bottom ends of each screening hopper (304) on the side close to the rotating hopper (303). There are two rotating seats (413) in each screening hopper (304), and they are respectively and movably installed at the left and right top ends of the screening hopper (304) close to the rotating hopper (303). There are two connecting rods (414) in each screening hopper (304), and they are respectively and movably installed in the two rotating seats (413). One end of the connecting rod (414) close to the partition plate (412) is movably installed on the side of the partition plate (412) close to the screening hopper (304). A baffle is fixedly installed at the end of the connecting rod (414) far from the partition plate (412). There are two return springs (415) in each screening hopper (304), and they are respectively movably sleeved on the two connecting rods (414) and located between the rotating seat (413) and the baffle.

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