Rice color sorter

Abstract

The utility model relates to the technical field of rice processing equipment, and discloses a rice color sorter which comprises a machine body, a feeding device is arranged above the machine body, a color sorting device is arranged below the feeding device, the feeding device comprises a feeding hopper, a feeding port is formed in the upper portion of the feeding hopper, a discharging port is formed in the lower portion of the feeding hopper, and the color sorting device is arranged below the feeding hopper. A color sorting feeding mechanism is arranged at the discharging port, and the color sorting device comprises a first sliding way and a second sliding way which are arranged in the color sorting cavity and incline relatively, a color sorting mechanism located below the first sliding way and the second sliding way, and a dust removal device used for removing dust of the color sorting mechanism. A material receiving device used for receiving the sorted rice of different grades is further arranged below the color sorting device, the influence of dust on the color sorting precision is effectively reduced through the dust removal device, meanwhile, color sorting operation cannot be interfered in the dust removal process, the labor intensity of workers is small, the color sorting precision is high, and the color sorting effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing equipment, in particular to a rice color sorter. Background Art

[0002] Rice is the main food for people in most parts of China. When rice is harvested, it will be more or less damaged, such as moldy grains, defective grains and blackhead grains, which will have a certain impact on the overall quality of rice. Rice color sorter is born. Rice color sorter is a machine that uses photoelectric technology to automatically sort out the different-colored grains in rice according to the difference in the optical properties of rice, thereby achieving the effect of improving the quality of rice and removing impurities.

[0003] The rice color sorter mainly relies on the light sensor in the machine body to generate an output signal to drive the air gun to blow away the rice of different colors according to the intensity and color of the light. It is usually necessary to set a transparent glass in front of the light sensor to prevent the dust in the rice from adhering to the light sensor. However, over time, the dust adhering to the transparent glass will also affect the accuracy of the light sensor in recognizing the color of the rice.

[0004] In the prior art, for example, a color sorter for rice production with application number 202221918709.6, a driving mechanism drives a cleaning rod up and down, and a sponge is used to clean the dust attached to the light-transmitting glass, without manual cleaning, which reduces labor intensity and improves the color sorting effect. However, the cleaning rod is set in front of the photo sensor, and the cleaning rod will interfere with the photo sensor recognition when it is raised and lowered, which has a certain impact on the color sorting effect. Utility Model Content

[0005] The utility model aims to provide a rice color sorter, which effectively reduces the influence of dust on the color sorting accuracy through a dust removal device, and does not interfere with the color sorting operation during the dust removal process, and has low labor intensity, high color sorting accuracy and good color sorting effect.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A rice color sorter comprises a machine body, a feeding device is arranged above the machine body, a color sorting device is arranged below the feeding device, the feeding device comprises a feeding hopper, a feeding port is arranged above the feeding hopper, a discharging port is arranged below the feeding hopper, a color sorting feeding mechanism is arranged at the discharging port, the color sorting device comprises a slideway 1 and a slideway 2 which are arranged relatively inclined in a color sorting chamber, a color sorting mechanism located below the slideway 1 and the slideway 2, and a dust removal device for removing dust from the color sorting mechanism, and a receiving device for receiving rice of different grades after sorting is also arranged below the color sorting device.

[0008] By adopting the above technical scheme, the color sorting feeding mechanism is used to control the feed flow entering the color sorting, so that the rice in the feed hopper gradually enters the color sorting mechanism in a continuous and small amount to perform the color sorting operation, thereby avoiding the problem of poor color sorting accuracy caused by excessive feeding at one time and blocking each other between the rice. After entering the color sorting chamber, the rice slides to the position of the color sorting mechanism through slides 1 and 2 in turn for color sorting operation. At the same time, the dust removal device continuously performs dust removal operation on the position where the color sorting mechanism is located, which can effectively reduce the influence of dust on the color sorting accuracy, without the need for manual cleaning, and greatly reduces the labor intensity of people.

[0009] The utility model is further configured as follows: the color sorting feeding mechanism comprises a feed roller, a plurality of dividing plates are evenly distributed circumferentially of the feed roller, the circumferential diameter of the ends of each of the dividing plates matches the size of the discharge port, the two ends of the feed roller are respectively rotatably connected to the side walls of the discharge port, and one end of the feed roller is connected to a feed motor fixed outside the discharge port.

[0010] By adopting the above technical scheme, when feeding, the feeding motor is started, and the feeding motor drives the feeding roller to rotate, thereby driving the various dividing plates connected to the feeding roller to rotate synchronously. When each dividing plate rotates, it will stir the rice in the feeding hopper, so that the rice in the feeding hopper is looser. At the same time, a plurality of accommodating cavities are formed between the feeding roller and two adjacent dividing plates. The accommodating cavities are used to sequentially put the rice in the feeding hopper into the color selection cavity below. Since the space of the accommodating cavity is small, continuous small-scale feeding operation can be achieved. By controlling the rotation speed of the feeding motor, the feeding flow rate can be controlled. The control process is simple and the operation is convenient.

[0011] The utility model is further configured as follows: the upper ends of the slideway 1 and the slideway 2 are respectively fixedly connected to the inner wall of the color selection chamber, the lower end of the slideway 1 is located on the upper surface of the slideway 2, and the gap between the lower end of the slideway 1 and the upper surface of the slideway 2 can only accommodate one grain of rice passing through at a time.

[0012] By adopting the above technical solution, after the rice enters the color sorting chamber, it first falls on the first slide, and the rice collides with the first slide during the falling process. During the collision, the rice adhering together and the dust wrapped on the surface of the rice will be separated from the rice, so that the rice continues to slide down in a single state until it falls on the second slide, and continues to slide down from the gap between the first slide and the second slide. Since the gap between the upper surfaces of the second slide can only accommodate one grain of rice at a time, the rice on the second slide can only slide down one by one, which further ensures that the rice will not block each other and ensures that each grain of rice entering the color sorting chamber can be fully exposed to the color sorting area, thereby further improving the color sorting accuracy.

[0013] The utility model is further configured as follows: the upper surface of the slideway 2 is provided with a plurality of protrusions parallel to its inclination direction, the cross-section of the protrusions is triangular, only one grain of rice can pass between adjacent protrusions, and the protrusions are located at the lower end of the slideway 1 opposite to the slideway 2 and extend downward.

[0014] By adopting the above technical solution, the protrusion on the second slideway is used to guide the sliding rice, so as to prevent the movement path of the rice from being offset and colliding with each other, resulting in stacking or being unable to be detected by the color sorting mechanism, thereby effectively ensuring the reliability of rice color sorting.

[0015] The utility model is further configured as follows: the color sorting mechanism includes a light source, a color acquisition sensor and a high-pressure nozzle, the color acquisition sensor is connected to the control module through a signal cable, the high-pressure nozzle is connected to the control module through a solenoid valve, and the control module is connected to the solenoid valve through a signal cable.

[0016] By adopting the above technical solution, the light source is used to provide a certain amount of lighting, which is convenient for the color acquisition sensor to collect rice color information. The color acquisition sensor transmits the collected rice color information to the control module through the signal cable. The control module controls the solenoid valve to perform corresponding actions according to the received rice color information, so as to remove rice with abnormal color or impurities.

[0017] The utility model is further configured as follows: the dust removal device includes a light-transmitting cover body arranged outside the color sorting mechanism, the side of the cover body opposite to the light source and the color collection sensor is an opening, the opening is sealed by a transparent movable plate, the upper and lower ends of the movable plate are respectively slidably matched with the slide rails on the inner wall of the color sorting chamber, a rack is fixedly provided on one side of the top of the movable plate, the rack is meshed with a gear, the gear is fixedly connected to a dust removal motor fixed outside the color sorting chamber, a cleaning brush is respectively provided on both sides of the movable plate relative to the light source and the color collection sensor, the upper and lower ends of the cleaning brush are respectively fixed on the cover body, and the cleaning brush is abutted against the outer side surface of the movable plate.

[0018] By adopting the above technical scheme, the dust removal device is used to continuously perform dust removal operations on the color sorting area of ​​the color sorting mechanism during the color sorting process, and the movable plate is used to seal the light-transmitting cover body while ensuring the normal operation of the color sorting mechanism, so that the light-transmitting cover body can effectively protect the color sorting mechanism to prevent dust from entering the color sorting mechanism. During color sorting, the dust removal motor starts to drive the gear to rotate, and the gear rotates to drive the rack to slide so that the movable plate slides along the slide rail. When the movable plate slides along the slide rail, its surface continuously moves relative to the cleaning brush, thereby realizing the cleaning of dust on the surface of the movable plate. By controlling the output shaft of the dust removal motor to rotate alternately in forward and reverse directions, the movable plate surface can be continuously and repeatedly cleaned, so that the movable plate always maintains good light transmittance, and because the cleaning brush is located on both sides of the relative position of the movable plate, the light source and the color collection sensor, the cleaning brush will not interfere with the color sorting operation, further ensuring the color sorting effect.

[0019] The utility model is further configured as follows: the dust removal device further comprises a cleaning pipe opposite to the cleaning brush, and the cleaning pipe is connected to the dust collector through an exhaust fan.

[0020] By adopting the above technical solution, the cleaning pipe is used to clean the dust sliding down the slideway 2 and the dust brushed by the cleaning brush. During cleaning, the exhaust fan is started to generate negative pressure in the cleaning pipe, thereby continuously extracting the cleaned dust to prevent the dust from mixing with the rice below and affecting the quality of the rice. The dust directly enters the dust collector through the exhaust fan for dust removal operation to prevent direct dust discharge from affecting the environment.

[0021] The utility model is further configured as follows: the material receiving device comprises a qualified product receiving hopper, a broken rice receiving hopper and an unqualified product receiving hopper, the broken rice receiving hopper is opposite to the extension line of the second slideway, the qualified product receiving hopper is located on one side of the broken rice receiving hopper, the upper end opening of the broken rice receiving hopper is provided with an inclined screen, the lowest end of the screen extends to the upper end opening of the qualified product receiving hopper, and the unqualified product receiving hopper is on the other side of the broken rice receiving hopper.

[0022] By adopting the above technical solution, the rice grains sliding down the slide are color-sorted by the color sorting mechanism. The color collection sensor in the color sorting mechanism collects the color of each rice grain in turn and transmits the color information to the control module. The control module controls the high-pressure nozzle solenoid valve to perform corresponding actions. When rice with normal color is identified, the solenoid valve is closed, and the rice falls freely into the screen below. The screen further screens the rice. The rice with normal color and complete shape slides along the screen to the qualified product receiving hopper on one side, and the broken rice with normal color but broken falls into the broken rice receiving hopper below through the screen. When rice with abnormal color is identified, the solenoid valve is started to blow the abnormal rice into the unqualified product receiving hopper to achieve rice sorting.

[0023] The beneficial effects of the utility model are:

[0024] 1. The color sorting feeding mechanism of the utility model is used to control the feed flow rate entering the color sorting, so that the rice in the feed hopper gradually enters the color sorting mechanism in a continuous and small amount to perform the color sorting operation, thereby avoiding the problem of poor color sorting accuracy caused by excessive feeding at one time and blocking each other between the rice. After the rice enters the color sorting chamber, it slides to the position of the color sorting mechanism through the slideway 1 and the slideway 2 in turn for the color sorting operation. At the same time, the dust removal device continuously performs dust removal operation on the position where the color sorting mechanism is located, which can effectively reduce the influence of dust on the color sorting accuracy, without manual cleaning, and greatly reduces the labor intensity of people.

[0025] 2. In the utility model, after the rice enters the color sorting chamber, it first falls on the first slide, and the rice collides with the first slide during the falling process. During the collision, the rice adhered together and the dust wrapped on the surface of the rice will be separated from the rice, so that the rice continues to slide down in a single state until it falls on the second slide, and continues to slide down from the gap between the first slide and the second slide. Since the gap between the upper surfaces of the second slide can only accommodate one grain of rice at a time, the rice on the second slide can only slide down one by one, which further ensures that the rice will not block each other and ensures that each grain of rice entering the color sorting chamber can be fully exposed to the color sorting area, thereby further improving the color sorting accuracy.

[0026] 3. The protrusion on the second slideway of the utility model is used to guide the sliding rice, so as to prevent the movement path of the rice from deviating and colliding with each other, thereby causing stacking or being unable to be detected by the color sorting mechanism, thereby effectively ensuring the reliability of rice color sorting.

[0027] 4. The dust removal device in the utility model is used to continuously perform dust removal operations on the color sorting area of ​​the color sorting mechanism during the color sorting process. The movable plate is used to seal the light-transmitting cover body while ensuring the normal operation of the color sorting mechanism, so that the light-transmitting cover body can effectively protect the color sorting mechanism and prevent dust from entering the color sorting mechanism. During color sorting, the dust removal motor starts to drive the gear to rotate. When the gear rotates, the rack is driven to slide so that the movable plate slides along the slide rail. When the movable plate slides along the slide rail, its surface continuously moves relative to the cleaning brush, thereby realizing the cleaning of dust on the surface of the movable plate. By controlling the output shaft of the dust removal motor to rotate alternately in forward and reverse directions, the movable plate surface can be continuously and repeatedly cleaned, so that the movable plate always maintains good light transmittance. Moreover, since the cleaning brush is located on both sides of the relative position of the movable plate, the light source and the color collection sensor, the cleaning brush will not interfere with the color sorting operation, thereby further ensuring the color sorting effect.

[0028] 5. The cleaning pipe in the utility model is used to clean the dust sliding down the slideway 2 and the dust brushed by the cleaning brush. During cleaning, the exhaust fan is started to generate negative pressure in the cleaning pipe, thereby continuously extracting the cleaned dust to prevent the dust from mixing into the rice below and affecting the quality of the rice. The dust directly enters the dust collector through the exhaust fan for dust removal operation to prevent direct dust discharge from affecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of a rice color sorter.

[0031] Figure 2 yes Figure 1 A is a partial enlarged schematic diagram of the middle part.

[0032] Figure 3 The utility model is a schematic diagram of the structure of a slideway 2 in a rice color sorting machine.

[0033] In the figure, 1. machine body; 2. feeding device; 21. feeding hopper; 22. feeding port; 23. discharging port; 3. color sorting device; 31. color sorting chamber; 32. slideway 1; 33. slideway 2; 34. protrusion; 4. color sorting feeding mechanism; 41. feeding roller; 42. dividing plate; 43. feeding motor; 5. color sorting mechanism; 51. light source; 52. color collection sensor; 53. high-pressure nozzle; 6. dust removal device; 61. cover body; 62. movable plate; 63. slide rail; 64. rack; 65. gear; 66. dust removal motor; 67. cleaning brush; 68. cleaning pipe; 7. receiving device; 71. receiving hopper for qualified products; 72. receiving hopper for broken rice; 73. receiving hopper for unqualified products; 74. sieve. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 3As shown, a rice color sorter comprises a machine body 1, a feeding device 2 is provided above the machine body 1, a color sorting device 3 is provided below the feeding device 2, the feeding device 2 comprises a feeding hopper 21, a feeding port 22 is provided above the feeding hopper 21, a discharging port 23 is provided below the feeding hopper 21, a color sorting feeding mechanism 4 is provided at the discharging port 23, the color sorting device 3 comprises a slideway 1 32 and a slideway 2 33 which are relatively inclined and arranged in a color sorting chamber 31, a color sorting mechanism 5 located below the slideway 1 32 and the slideway 2 33, and a dust removal device 6 for dust removal of the color sorting mechanism 5, and a receiving device 7 for separately receiving rice of different grades after sorting is further provided below the color sorting device 3.

[0036] Furthermore, the color sorting feeding mechanism 4 includes a feed roller 41, and the feed roller 41 has multiple dividing plates 42 evenly distributed in the circumferential direction, and the circumferential diameter of the end of each of the dividing plates 42 matches the size of the discharge port 23. The two ends of the feed roller 41 are respectively rotatably connected to the side walls of the discharge port 23, and one end of the feed roller 41 is connected to a feed motor 43 fixed outside the discharge port 23.

[0037] Furthermore, the upper ends of the slide 1 32 and the slide 2 33 are respectively fixedly connected to the inner wall of the color selection chamber 31, and the lower end of the slide 1 32 is located on the upper surface of the slide 2 33, and the gap between the slide 1 32 and the upper surface of the slide 2 33 can only accommodate one grain of rice at a time.

[0038] Furthermore, the upper surface of the second slide 33 is provided with a plurality of protrusions 34 parallel to its inclination direction, the cross-section of the protrusions 34 is triangular, and only one grain of rice can pass between adjacent protrusions 34. The protrusions 34 are located at the lower end of the slide 1 32 opposite to the slide 2 33 and extend downward.

[0039] Furthermore, the color sorting mechanism 5 includes a light source 51, a color acquisition sensor 52 and a high-pressure nozzle 53, the color acquisition sensor 52 is connected to the control module through a signal cable, the high-pressure nozzle 53 is connected to the control module through a solenoid valve, and the control module is connected to the solenoid valve through a signal cable.

[0040] Furthermore, the dust removal device 6 includes a light-transmitting cover body 61 arranged outside the color sorting mechanism 5, and the side of the cover body 61 opposite to the light source 51 and the color collection sensor 52 is an opening, and the opening is sealed by a transparent movable plate 62, and the upper and lower ends of the movable plate 62 are respectively slidably matched with the slide rail 63 on the inner wall of the color sorting chamber 31, and a rack 64 is fixedly provided on one side of the top of the movable plate 62, and the rack 64 is meshed with a gear 65, and the gear 65 is fixedly connected to a dust removal motor 66 fixed outside the color sorting chamber 31, and a cleaning brush 67 is respectively provided on both sides of the movable plate 62 relative to the light source 51 and the color collection sensor 52, and the upper and lower ends of the cleaning brush 67 are respectively fixed on the cover body 61, and the cleaning brush 67 is against the outer side surface of the movable plate 62.

[0041] Furthermore, the dust removal device 6 also includes a cleaning pipe 68 opposite to the cleaning brush 67, and the cleaning pipe 68 is connected to the dust collector through an exhaust fan.

[0042] Furthermore, the material receiving device 7 includes a qualified product receiving hopper 71, a broken rice receiving hopper 72 and an unqualified product receiving hopper 73. The broken rice receiving hopper 72 is opposite to the extension line of the slide 33. The qualified product receiving hopper 71 is located on one side of the broken rice receiving hopper 72. The upper end opening of the broken rice receiving hopper 72 is provided with an inclined screen 74. The lowest end of the screen 74 extends to the upper end opening of the qualified product receiving hopper 71. The unqualified product receiving hopper 73 is on the other side of the broken rice receiving hopper 72.

[0043] The working principle of the utility model is as follows: the rice to be color-sorted is put into the feed hopper 21, and then the feed motor 43 is started. The feed motor 43 drives the feed roller 41 to rotate, thereby driving the respective dividing plates 42 connected to the feed roller 41 to rotate synchronously. When the respective dividing plates 42 rotate, the rice in the feed hopper 21 is stirred, so that the rice in the feed hopper 21 is looser. At the same time, a plurality of accommodating cavities are formed between the feed roller 41 and two adjacent dividing plates 42. The accommodating cavities are used to sequentially put the rice in the feed hopper 21 into the color sorting cavity 31 below. Since the space of the accommodating cavity is small, continuous small-scale feeding operation can be achieved, thereby avoiding the problem of poor color sorting accuracy caused by blocking each other due to excessive feeding at one time.

[0044] After entering the color sorting chamber 31, the rice first falls on the first slide 32, and collides with the first slide 32 during the falling process. During the collision process, the rice adhered together and the dust wrapped on the surface of the rice will be separated from the rice, so that the rice continues to slide down in a single state until it falls on the second slide 33, and continues to slide down from the gap between the first slide 32 and the second slide 33. Since the gap between the upper surfaces of the second slide 33 can only accommodate one grain of rice at a time, the rice on the second slide 33 can only slide down one by one, further ensuring that the rice will not block each other, ensuring that each grain of rice entering the color sorting chamber 31 can be fully exposed to the color sorting area, thereby further improving the color sorting accuracy.

[0045] After the rice slides to the bottom along the second slideway 33, it directly falls on the position opposite to the color sorting mechanism 5. The color collection sensor 52 in the color sorting mechanism 5 collects the color of each grain of rice in turn and transmits the color information to the control module. The control module controls the electromagnetic valve of the high-pressure nozzle 53 to perform corresponding actions. When the rice with normal color is identified, the electromagnetic valve is closed, and the rice falls freely into the screen 74 below. The screen 74 further screens the rice. The rice with normal color and complete shape slides along the screen 74 to the qualified product receiving hopper 71 on one side. The broken rice with normal color but broken falls into the broken rice receiving hopper 72 below through the screen 74. When the rice with abnormal color is identified, the electromagnetic valve is started to blow the abnormal rice into the unqualified product receiving hopper 73 to achieve rice sorting.

[0046] While the color sorting operation is in progress, the dust removal device 6 continuously performs dust removal operation on the color sorting area of ​​the color sorting mechanism 5. The movable plate 62 in the dust removal device 6 is used to seal the light-transmitting cover body 61 while ensuring the normal operation of the color sorting mechanism 5, so that the light-transmitting cover body 61 can effectively protect the color sorting mechanism 5 and prevent dust from entering the color sorting mechanism 5. During color sorting, the dust removal motor 66 starts to drive the gear 65 to rotate. When the gear 65 rotates, the rack 64 is driven to slide, so that the movable plate 62 slides along the slide rail 63. When the movable plate 62 slides along the slide rail 63, its surface continuously moves relative to the cleaning brush 67, so as to realize the cleaning of the dust on the surface of the movable plate 62. By controlling the output shaft of the dust removal motor 66 to rotate alternately in forward and reverse directions, it can be realized The movable plate 62 is continuously and repeatedly cleaned, so that the movable plate 62 always maintains good light transmittance, and because the cleaning brush 67 is located on both sides of the movable plate 62 relative to the light source and the color collection sensor 52, the cleaning brush 67 will not interfere with the color sorting operation, further ensuring the color sorting effect. At the same time, the cleaning pipe in the dust removal device 6 continuously cleans the dust sliding down the slideway 2 33 and the dust brushed by the cleaning brush 67. During cleaning, the exhaust fan is started to generate negative pressure in the cleaning pipe, thereby continuously sucking away the cleaned dust to avoid dust mixing into the rice below and affecting the quality of the rice. The dust directly enters the dust collector through the exhaust fan for dust removal operation to avoid direct dust discharge and impact on the environment.

Claims

1. A rice color sorter, characterized by: The invention comprises a machine body (1), a feeding device (2) is arranged above the machine body (1), a color sorting device (3) is arranged below the feeding device (2), the feeding device (2) comprises a feeding hopper (21), a feeding port (22) is arranged above the feeding hopper (21), a discharging port (23) is arranged below the feeding hopper (21), a color sorting feeding mechanism (4) is arranged at the discharging port (23), the color sorting device (3) comprises a slideway 1 (32) and a slideway 2 (33) which are arranged in a color sorting chamber (31) and are inclined relative to each other, a color sorting mechanism (5) located below the slideway 1 (32) and the slideway 2 (33), and a dust removal device (6) for removing dust from the color sorting mechanism (5), and a material receiving device (7) for receiving rice of different grades after sorting is also arranged below the color sorting device (3).

2. A rice color sorter according to claim 1, characterized in that: The color sorting feeding mechanism (4) comprises a feeding roller (41), and the feeding roller (41) has a plurality of dividing plates (42) evenly distributed in the circumferential direction, and the circumferential diameter of the ends of each dividing plate (42) matches the size of the discharge port (23), and the two ends of the feeding roller (41) are respectively rotatably connected to the side walls of the discharge port (23), and one end of the feeding roller (41) is connected to a feeding motor (43) fixed outside the discharge port (23).

3. A rice color sorter according to claim 1, characterized in that: The upper ends of the slideway 1 (32) and the slideway 2 (33) are respectively fixedly connected to the inner wall of the color selection chamber (31); the lower end of the slideway 1 (32) is located on the upper surface of the slideway 2 (33) and the gap between the slideway 1 (32) and the upper surface of the slideway 2 (33) can only accommodate one grain of rice passing through at a time.

4. A rice color sorter according to claim 2, characterized in that: The upper surface of the second slideway (33) is provided with a plurality of protrusions (34) parallel to the inclination direction thereof, the cross section of the protrusions (34) being triangular, and only one grain of rice can pass between adjacent protrusions (34), and the protrusions (34) are located at a position opposite to the lower end of the first slideway (32) and the second slideway (33) and extend downward.

5. A rice color sorter according to claim 1, characterized in that: The color sorting mechanism (5) comprises a light source (51), a color collection sensor (52) and a high-pressure nozzle (53); the color collection sensor (52) is connected to a control module via a signal cable; the high-pressure nozzle (53) is connected to the control module via a solenoid valve; and the control module is connected to the solenoid valve via a signal cable.

6. A rice color sorter according to claim 1, characterized in that: The dust removal device (6) comprises a light-transmitting cover (61) arranged outside the color selection mechanism (5); a side of the cover (61) opposite to the light source (51) and the color collection sensor (52) is an opening, and the opening is sealed by a transparent movable plate (62); the upper and lower ends of the movable plate (62) are respectively slidably matched with a slide rail (63) on the inner wall of the color selection chamber (31); a rack (64) is fixedly provided on one side of the top of the movable plate (62); the rack (64) is meshed with a gear (65); the gear (65) is fixedly connected to a dust removal motor (66) fixed outside the color selection chamber (31); a cleaning brush (67) is respectively provided on both sides of the movable plate (62) at a position opposite to the light source (51) and the color collection sensor (52); the upper and lower ends of the cleaning brush (67) are respectively fixed on the cover (61); and the cleaning brush (67) abuts against the outer side surface of the movable plate (62).

7. A rice color sorter according to claim 6, characterized in that: The dust removal device (6) further comprises a cleaning pipe (68) opposite to the cleaning brush (67), and the cleaning pipe (68) is connected to the dust collector via an exhaust fan.

8. A rice color sorter according to claim 7, characterized in that: The material receiving device (7) comprises a qualified product receiving hopper (71), a broken rice receiving hopper (72) and a failed product receiving hopper (73); the broken rice receiving hopper (72) is opposite to the extension line of the second slideway (33); the qualified product receiving hopper (71) is located on one side of the broken rice receiving hopper (72); an inclined screen (74) is provided at the upper opening of the broken rice receiving hopper (72); the lowest end of the screen (74) extends to the upper opening of the qualified product receiving hopper (71); and the failed product receiving hopper (73) is on the other side of the broken rice receiving hopper (72).

Images