A rice sorting system

Abstract

The present application relates to the technical field of rice sorting equipment, and provides a rice sorting system, which comprises a first conveying channel for conveying to-be-tested rice, a second conveying channel for conveying to-be-tested rice, a sampler for sampling the to-be-tested rice from the first conveying channel, a grain sorting mechanism for receiving the to-be-tested rice and releasing the to-be-tested rice into the second conveying channel in batches in sequence, and a transfer mechanism for transferring the sampler so that the to-be-tested rice in the sampler can be transferred to the grain sorting mechanism.

Description

Technical Field

[0001] This invention belongs to the technical field of rice sorting equipment, and more specifically, relates to a rice sorting system. Background Technology

[0002] Rice is a vital staple food in my country, crucial to national security. The quality of rice is paramount, and assessing it requires testing the rice grains, necessitating multiple intermittent samplings. The usual method involves manually spreading out different types of rice grains and taking samples from different locations within each grain. These samples are then taken to testing equipment (such as imaging devices) for analysis by technicians. However, this manual, intermittent sampling method is extremely inefficient. Summary of the Invention

[0003] The purpose of this invention is to provide a rice sorting system to solve the technical problem of very low efficiency in the existing technology of manual intermittent sampling.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a rice sorting system is provided, comprising: a first conveying channel for conveying rice to be tested, a second conveying channel for conveying rice to be tested, a sampler for sampling the rice to be tested from the first conveying channel, a grain-separating mechanism for receiving the rice to be tested and releasing the rice to be tested in batches into the second conveying channel, a transfer mechanism for transferring the sampler so that the rice to be tested in the sampler can be transferred to the grain-separating mechanism, and a photographing mechanism for photographing the rice to be tested in the second conveying channel downstream of the grain-separating mechanism.

[0005] Furthermore, the transfer mechanism includes: a bracket, a crossbar mounted on the bracket, a transverse slide table slidably mounted on the crossbar, a longitudinal slide table slidably mounted on the transverse slide table, a first driver for driving the transverse slide table to move, and a second driver for driving the longitudinal slide table to move; the sampler is mounted on the longitudinal slide table.

[0006] Further, the sampler includes: a base connected to the longitudinal slide, a collection tube rotatably mounted on the base about a first horizontal axis, and a third driver for driving the collection tube to rotate; the base can move with the longitudinal slide to a first position and a second position; the collection tube includes: a first straight tube and a second straight tube connected to one end of the first straight tube; the first straight tube and the second straight tube are sequentially connected in an L-shape; the first straight tube and the second straight tube are respectively perpendicular to the first horizontal axis; the collection tube can rotate and switch between a first rotation position and a second rotation position; when the base is in the first position and the collection tube rotates to the first rotation position, the first straight tube is horizontally positioned, the inlet of the first straight tube is located in the first conveying channel, and the inlet of the first straight tube faces upstream of the first conveying channel; when the base is in the second position and the collection tube rotates to the second rotation position, the height from the inlet of the first straight tube to the outlet of the second straight tube decreases sequentially.

[0007] Furthermore, when the external force is removed, the collecting tube can rotate from the first rotation position to the second rotation position.

[0008] Furthermore, the third actuator includes: a rope and a puller disposed on the seat and capable of retracting the rope; the puller is connected to the first straight tube or the second straight tube via the rope;

[0009] And / or the third driver includes: a motor having a drive shaft; the collection tube is connected to the drive shaft, the axis of the drive shaft being coaxial with the first horizontal axis.

[0010] Furthermore, it also includes: a cover plate for covering the inlet of the first straight pipe; the cover plate is rotatably disposed on the inner wall of the inlet of the first straight pipe about a second horizontal axis; when the first straight pipe is horizontally disposed, the cover plate is vertically disposed, and the second horizontal axis is located at the top of the cover plate; the cover plate can open or close the inlet of the first straight pipe when it rotates about the second horizontal axis.

[0011] Furthermore, the grain separating mechanism includes: a vertically arranged storage channel, a rotating column located within the storage channel and rotatable about a third horizontal axis, and a fourth actuator for driving the rotating column to rotate; the rotating column divides the storage channel into an upper channel and a lower channel; a recess is formed on the outer wall of the rotating column for placing the rice to be tested; when the rotating column rotates about the third horizontal axis in a first rotation range, the recess communicates with the upper channel; when the rotating column rotates about the third horizontal axis in a second rotation range, the recess communicates with the lower channel.

[0012] Furthermore, the lower channel is divided into multiple parallel and spaced sub-channels, and the number of recesses is multiple; each sub-channel corresponds to each recess; when the rotating column rotates around the third horizontal axis to a predetermined rotation position within the second rotation range, each recess communicates with the corresponding sub-channel.

[0013] Furthermore, it also includes: a shooting mechanism for photographing the rice to be tested in the second conveying channel downstream of the grain separating mechanism; the shooting mechanism includes: a cover placed above a predetermined shooting position on the second conveying channel and a camera located inside the cover and capable of shooting downwards at the rice to be tested in the second conveying channel.

[0014] Furthermore, it also includes: a first conveyor belt and a second conveyor belt; the first conveyor channel is formed above the first conveyor channel, and the second conveyor channel is formed above the second conveyor belt.

[0015] The beneficial effects of the rice sorting system provided by this invention are as follows: Compared with the prior art, the rice sorting system provided by this invention allows the rice to be tested to be transported along a first conveying channel and a second conveying channel; the sampler can sample the rice to be tested in the first conveying channel; after the sampler obtains the rice to be tested in the first conveying channel, the transfer mechanism transfers the sampler so that the rice to be tested on the sampler can be transferred to the grain separating mechanism, which releases the received rice to be tested in batches into the second conveying channel; when it is necessary to sample a certain type of rice, it is only necessary to put the rice to be tested into the first conveying channel, and the transfer mechanism will move the sampler back and forth in the first conveying channel. The sampler transfers rice samples between the sampler and the grain-splitting mechanism. After sampling the rice in the first conveying channel, the transfer mechanism moves the sampler to transfer the rice to the grain-splitting mechanism. This back-and-forth movement of the sampler allows for intermittent sampling, resulting in high efficiency. The grain-splitting mechanism releases the received rice into the second conveying channel in batches, allowing users to test the rice in the second conveying channel sequentially, reducing the number of times the same type of rice is sampled and significantly improving efficiency. If continuous testing of different types of rice is required, simply place the different types of rice sequentially into the first conveying channel, further improving testing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the rice sorting system provided in an embodiment of the present invention;

[0018] Figure 2 A three-dimensional schematic diagram of the transfer mechanism provided in an embodiment of the present invention;

[0019] Figure 3 A front view schematic diagram of a sampler provided in an embodiment of the present invention (collection tube rotated to the first rotation position);

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 A front view schematic diagram of a sampler provided in an embodiment of the present invention (collection tube rotated to the second rotation position);

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is a front view schematic diagram of the first straight tube collecting rice grains when the collection tube is rotated to the first rotation position, according to an embodiment of the present invention.

[0024] Figure 8 This is an exploded view of the rotating column separating the upper and lower channels according to an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram showing the cooperation between the particle-splitting mechanism and the second conveyor belt provided in an embodiment of the present invention.

[0026] The following are the labeling elements in the figure:

[0027] 11-First conveying channel; 12-Second conveying channel; 13-First conveyor belt; 14-Second conveyor belt; 2-Sampler; 21-Seat; 22-Collection tube; 221-First straight tube; 222-Second straight tube; 223-First horizontal axis; 23-Rope; 24-Cover plate; 241-Second horizontal axis; 3-Grain separating mechanism; 31-Storage channel; 311-Upper channel; 312-Lower channel; 3121-Sub-channel; 32-Rotating column; 321-Recess; 4-Transfer mechanism; 41-Bracket; 42-Crossbar; 43-Transverse slide; 44-Longitudinal slide; 5-Shooting mechanism; 6-Rice grain to be tested. Detailed Implementation

[0028] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Here, A and B can be singular or plural, respectively.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Please refer to the following: Figures 1 to 9 The rice sorting system provided by the present invention will now be described. The rice sorting system includes: a first conveying channel 11 for conveying rice 6 to be tested, a second conveying channel 12 for conveying rice 6 to be tested, a sampler 2 for sampling rice 6 to be tested from the first conveying channel 11, a grain separating mechanism 3 for receiving rice 6 to be tested and releasing rice 6 to be tested in batches into the second conveying channel 12, and a transfer mechanism 4 for transferring the sampler 2 so that rice 6 to be tested in the sampler 2 can be transferred to the grain separating mechanism 3.

[0034] Thus, the rice grains 6 to be tested can be conveyed along the first conveying channel 11, and the rice grains 6 to be tested can be conveyed along the second conveying channel 12; the sampler 2 can sample the rice grains 6 to be tested in the first conveying channel 11. After the sampler 2 obtains the rice grains 6 to be tested in the first conveying channel 11, the transfer mechanism 4 transfers the sampler 2 so that the rice grains 6 to be tested on the sampler 2 can be transferred to the grain separating mechanism 3. The grain separating mechanism 3 releases the received rice grains 6 to be tested in batches into the second conveying channel 12; when it is necessary to sample a certain type of rice grain 6, it is only necessary to put the rice grains 6 to be tested into the first conveying channel 11. The transfer mechanism 4 will transfer the sampler 2 back and forth between the first conveying channel 11 and the grain separating mechanism 3. After the rice grains 6 to be tested are sampled in the first conveying channel 11, the transfer mechanism 4 moves the sampler 2 to transfer the rice grains 6 to be tested in the sampler 2 to the grain separating mechanism 3. The sampler 2 can achieve intermittent sampling during the back-and-forth movement of the sampler 2, which is highly efficient. The grain separating mechanism 3 releases the received rice grains 6 to be tested in batches into the second conveying channel 12, which makes it convenient for users to test the rice grains 6 to be tested in the second conveying channel 12 in batches, reducing the number of times the same type of rice grains 6 to be tested are sampled, which greatly improves efficiency. If it is necessary to continuously test different types of rice grains 6, it is only necessary to put different types of rice grains 6 into the first conveying channel 11 in sequence, which improves the testing efficiency.

[0035] In one embodiment, the first conveying channel 11 can be a space or pipe for the rice grains 6 to be tested to move. In another embodiment, the first conveying channel 11 can be a space formed above a drive belt or drive chain.

[0036] In one embodiment, the second conveying channel 12 can be a space or pipe for the rice grains 6 to be tested to move. In another embodiment, the second conveying channel 12 can be a space formed above a drive belt or drive chain.

[0037] In one embodiment, the sampler 2 can sample the rice grains 6 to be tested by any of the following methods: clamping, scooping, or adsorption.

[0038] In one embodiment, the capturing device can be a camera. In another embodiment, the camera is a CCD.

[0039] In one embodiment, the grain-separating mechanism 3 may release the rice grains 6 to be tested into the second conveying channel 12 in batches once at predetermined intervals.

[0040] Further, please refer to Figures 1 to 9As a specific embodiment of the rice sorting system provided by the present invention, the transfer mechanism 4 includes: a support 41, a crossbar 42 disposed on the support 41, a transverse slide 43 slidably disposed on the crossbar 42, a longitudinal slide 44 slidably disposed on the transverse slide 43, a first driver for driving the transverse slide 43 to move, and a second driver for driving the longitudinal slide 44 to move; the sampler 2 is disposed on the longitudinal slide 44. Thus, the transverse slide 43 can move laterally relative to the crossbar 42 under the drive of the first driver, and the longitudinal slide 44 can move longitudinally relative to the transverse slide 43 under the drive of the second driver. The sampler 2 is disposed on the longitudinal slide 44, allowing the sampler 2 to move laterally and longitudinally relative to the crossbar 42.

[0041] In one embodiment, the first driver may be a linear motor.

[0042] In one embodiment, the second driver may be a linear motor.

[0043] Further, please refer to Figures 1 to 9As a specific embodiment of the rice sorting system provided by the present invention, the sampler 2 includes: a base 21 connected to a longitudinal slide 44, a collection tube 22 rotatably disposed on the base 21 about a first horizontal axis 223, and a third driver for driving the collection tube 22 to rotate; the base 21 can move with the longitudinal slide 44 to a first position and a second position; the collection tube 22 includes: a first straight tube 221 and a second straight tube 222 connected to one end of the first straight tube 221; the first straight tube 221 and the second straight tube 222 are connected in sequence in an L-shape; the first straight tube 221 and the second straight tube 222 are connected in a L-shape; the first straight tube 221 and the second straight tube 222 are connected in a L-shape. The tubes 222 are respectively arranged perpendicularly to the first horizontal axis 223; the collection tube 22 can rotate and switch between the first rotation position and the second rotation position; when the seat 21 is in the first position and the collection tube 22 rotates to the first rotation position, the first straight tube 221 is arranged horizontally, the inlet of the first straight tube 221 is located in the first conveying channel 11, and the inlet of the first straight tube 221 faces the upstream of the first conveying channel 11; when the seat 21 is in the second position and the collection tube 22 rotates to the second rotation position, the height from the inlet of the first straight tube 221 to the outlet of the second straight tube 222 decreases sequentially. Thus, the seat 21 is connected to the longitudinal slide 44, and the seat 21 can move with the longitudinal slide 44; the collection tube 22 is rotatably mounted on the seat 21 about a first horizontal axis; the collection tube 22 can move between a first position and a second position with the longitudinal slide 44; the collection tube 22 includes a first straight tube 221 and a second straight tube 222 communicating with the first straight tube 221, and the first straight tube 221 and the second straight tube 222 are connected in an L-shape; the collection tube 22 can switch between a first rotation position and a second rotation position under the drive of the third driver; when the seat 21 is in the first position and the collection tube 22 rotates to the first rotation position, the first straight tube 221 is horizontally positioned, and the first straight tube... The inlet of 221 is located inside the first conveying channel 11, and the inlet of the first straight pipe 221 faces upstream of the first conveying channel 11, so that the rice to be tested 6 conveyed along the first conveying channel 11 can enter the first straight pipe 221 from the inlet of the first straight pipe 221 and be temporarily stored inside the first straight pipe 221; when the seat 21 is in the second position and the collecting pipe 22 rotates to the second rotating position, the height from the inlet of the first straight pipe 221 to the outlet of the second straight pipe 222 decreases sequentially, so that the rice to be tested 6 inside the first straight pipe 221 can be gradually conveyed downward along the first straight pipe 221 and the second straight pipe 222 under the action of gravity, and finally the rice to be tested 6 inside the first straight pipe 221 can be poured into the grain separating mechanism 3.

[0044] In one embodiment, the bottom of the base 21 has a slot, and the collecting tube 22 has a locking part that extends into and is engaged in the slot. The locking part is pivotally mounted on the two side walls of the slot. In one embodiment, the axis of the pivot is the first horizontal axis 223.

[0045] In one embodiment, the second straight pipe 222, which is connected to the first straight pipe 221, is vertically arranged.

[0046] In one embodiment, the second straight pipe 222 connected to the first straight pipe 221 is made of soft material to reduce damage to the rice grains 6 to be tested.

[0047] Further, please refer to Figures 1 to 9 As a specific embodiment of the rice sorting system provided by the present invention, when the external force is removed, the collecting pipe 22 can rotate from the first rotating position to the second rotating position. In this way, when the external force is removed, the collecting pipe 22 can return to the second rotating position, which facilitates the tilting of the collecting pipe 22.

[0048] Further, please refer to Figures 1 to 9 In one specific embodiment of the rice sorting system provided by the present invention, the third actuator includes: a rope 23 and a traction device disposed on the base 21 and capable of retracting and extending the rope 23; the traction device is connected to a first straight tube 221 or a second straight tube 222 via the rope 23. Thus, the traction device pulls the first straight tube 221 or the second straight tube 222 via the rope 23 to rotate the collection tube 22 from a second rotational position to a first rotational position; when the traction device releases the rope 23, the collection tube 22 can return to the second rotational position under the action of gravity.

[0049] In one embodiment, the third driver includes: a motor with a drive shaft; a collection tube 22 is connected to the drive shaft, the axis of the drive shaft being coaxial with the first horizontal axis 223. Thus, it is very convenient to drive the collection tube 22 to rotate via the motor.

[0050] Further, please refer to Figures 1 to 9 As a specific embodiment of the rice sorting system provided by the present invention, it further includes: a cover plate 24 for covering the inlet of the first straight tube 221; the cover plate 24 is rotatably disposed on the inner wall of the inlet of the first straight tube 221 about a second horizontal axis 241; when the first straight tube 221 is horizontally disposed, the cover plate 24 is vertically disposed, and the second horizontal axis 241 is located at the top of the cover plate 24; when the cover plate 24 rotates about the second horizontal axis 241, it can open or close the inlet of the first straight tube 221. In this way, the cover plate 24, when placed over the inlet of the first straight tube 221, can prevent the rice to be tested 6 from leaking out of the first straight tube 221; when the rice to be tested 6 moves along the first conveying channel 11 and comes into contact with the cover plate 24, it can push the cover plate 24 to enter the first straight tube 221.

[0051] Further, please refer to Figures 1 to 9As a specific embodiment of the rice sorting system provided by the present invention, the grain-separating mechanism includes: a vertically arranged storage channel 31, a rotating column 32 located in the storage channel 31 and rotatable about a third horizontal axis, and a fourth driver for driving the rotating column 32 to rotate; the rotating column 32 divides the storage channel 31 into an upper channel 311 and a lower channel 312; a recessed portion 321 for placing rice grains 6 to be tested is formed on the outer side wall of the rotating column 32; when the rotating column 32 rotates about the third horizontal axis in the first rotation range, the recessed portion 321 is connected to the upper channel 311; when the rotating column 32 rotates about the third horizontal axis in the second rotation range, the recessed portion 321 is connected to the lower channel 312. Thus, after the rice 6 to be tested is poured into the storage channel 31 through the sampler 2, the rice 6 to be tested moves downward along the storage channel 31; the rotating column 32 divides the storage channel 31 into an upper channel 311 and a lower channel 312, and the rice 6 to be tested is stored in the upper channel 311; the outer wall of the rotating column 32 has a recessed part 321; when the rotating column 32 rotates around the third horizontal axis to the first rotation interval, the recessed part 321 communicates with the upper channel 311, and the rice 6 to be tested in the upper channel 311... It can enter the recess 321; when the rotating column 32 rotates around the third horizontal axis to the second rotation interval, the recess 321 is connected to the lower channel 312, and the rice to be tested 6 stored in the recess 321 is poured into the lower channel 312. The rice in the lower channel 312 enters the second conveying channel 12 along the lower channel 312; the rotating column 32 can transfer a batch of rice to be tested 6 from the upper channel 311 to the lower channel 312 by switching between the first rotation interval and the second rotation interval each time.

[0052] In one embodiment, the recess 321 can accommodate a single grain of rice 6 to be tested.

[0053] In one embodiment, the upper channel 311 is funnel-shaped.

[0054] Further, please refer to Figures 1 to 9 In one specific embodiment of the rice sorting system provided by the present invention, the lower channel 312 is divided into multiple parallel and spaced sub-channels 3121, and the number of recesses 321 is multiple; each sub-channel 3121 corresponds one-to-one with each recess 321; when the rotating column 32 rotates around the third horizontal axis to a predetermined rotation position within the second rotation interval, each recess 321 is connected to its corresponding sub-channel 3121. Thus, when the rotating column 32 switches between the first and second rotation intervals once, and when the rotating column 32 rotates around the third horizontal axis to a predetermined rotation position within the second rotation interval, the rice grains 6 to be tested in each recess 321 can be transported to the second conveying channel 12 through their respective corresponding sub-channels 3121.

[0055] In one embodiment, the sub-channels 3121 are arranged in parallel at intervals.

[0056] In one embodiment, each sub-channel 3121 extends in the vertical direction.

[0057] Further, please refer to Figures 1 to 9 As a specific embodiment of the rice sorting system provided by the present invention, it further includes: a shooting mechanism 5 for photographing the rice grains 6 to be tested within the second conveying channel 12 downstream of the grain-separating mechanism; the shooting mechanism 5 includes: a cover mounted above a predetermined shooting position on the second conveying channel 12 and a camera located within the cover and capable of shooting downwards at the rice grains 6 to be tested within the second conveying channel 12. Thus, the camera can photograph the rice grains 6 to be tested within the second conveying channel 12.

[0058] Further, please refer to Figures 1 to 9 As a specific embodiment of the rice sorting system provided by the present invention, it further includes: a first conveyor belt 13 and a second conveyor belt 14; a first conveyor channel 11 is formed above the first conveyor channel 11, and a second conveyor channel 12 is formed above the second conveyor belt 14. Thus, the rice to be tested 6 is conveniently conveyed via the first conveyor belt 13; the rice to be tested 6 is also conveniently conveyed via the second conveyor belt 14.

[0059] In one embodiment, the first conveyor belt 13 extends in a horizontal straight direction. In another embodiment, the surface of the first conveyor belt 13 is horizontally positioned.

[0060] In one embodiment, the second conveyor belt 14 extends in a horizontal straight direction. In another embodiment, the surface of the second conveyor belt 14 is horizontally positioned.

[0061] In one embodiment, the conveying speed of the first conveyor belt 13 is greater than the conveying speed of the second conveyor belt 14. In another embodiment, the conveying speed of the second conveyor belt 14 is greater than the conveying speed of the first conveyor belt 13.

[0062] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A rice sorting system, characterized in that, include: A first conveying channel for conveying rice to be tested, a second conveying channel for conveying rice to be tested, a sampler for sampling the rice to be tested from the first conveying channel, a grain-separating mechanism for receiving the rice to be tested and releasing the rice to be tested in batches into the second conveying channel, and a transfer mechanism for transferring the sampler so that the rice to be tested in the sampler can be transferred to the grain-separating mechanism; The transfer mechanism includes: a bracket, a crossbar mounted on the bracket, a transverse slide table slidably mounted on the crossbar, a longitudinal slide table slidably mounted on the transverse slide table, a first driver for driving the transverse slide table to move, and a second driver for driving the longitudinal slide table to move; the sampler is mounted on the longitudinal slide table. The sampler includes: a base connected to the longitudinal slide, a collection tube rotatably mounted on the base about a first horizontal axis, and a third actuator for driving the collection tube to rotate; the base can move with the longitudinal slide to a first position and a second position; the collection tube includes: a first straight tube and a second straight tube connected to one end of the first straight tube; the first straight tube and the second straight tube are sequentially connected in an L-shape; the first straight tube and the second straight tube are respectively perpendicular to the first horizontal axis; the collection tube can rotate and switch between a first rotation position and a second rotation position; when the base is in the first position and the collection tube rotates to the first rotation position, the first straight tube is horizontally positioned, the inlet of the first straight tube is located in the first conveying channel, and the inlet of the first straight tube faces upstream of the first conveying channel; when the base is in the second position and the collection tube rotates to the second rotation position, the height from the inlet of the first straight tube to the outlet of the second straight tube decreases sequentially, and the rice to be tested in the first straight tube can be gradually conveyed downward along the first straight tube and the second straight tube under the action of gravity to be poured into the grain separating mechanism; It also includes: a cover plate for covering the inlet of the first straight pipe; the cover plate is rotatably disposed on the inner wall of the inlet of the first straight pipe about a second horizontal axis; when the cover plate is placed on the inlet of the first straight pipe, it can prevent the rice to be tested from leaking out of the first straight pipe; when the rice to be tested moves along the first conveying channel and comes into contact with the cover plate, it can push the cover plate to enter the first straight pipe.

2. The rice sorting system as described in claim 1, characterized in that, When the external force is removed, the collecting tube can rotate from the first rotation position to the second rotation position.

3. The rice sorting system as described in claim 2, characterized in that, The third actuator includes: a rope and a puller disposed on the seat and capable of retracting the rope; the puller is connected to the first straight tube or the second straight tube via the rope. And / or the third driver includes: a motor having a drive shaft; the collection tube is connected to the drive shaft, the axis of the drive shaft being coaxial with the first horizontal axis.

4. The rice sorting system as described in claim 1, characterized in that, The grain separating mechanism includes: a vertically arranged storage channel, a rotating column located within the storage channel and rotatable about a third horizontal axis, and a fourth actuator for driving the rotating column to rotate; the rotating column divides the storage channel into an upper channel and a lower channel; a recess is formed on the outer wall of the rotating column for placing the rice to be tested; when the rotating column rotates about the third horizontal axis in a first rotation range, the recess is connected to the upper channel; when the rotating column rotates about the third horizontal axis in a second rotation range, the recess is connected to the lower channel.

5. The rice sorting system as described in claim 4, characterized in that, The lower channel is divided into multiple parallel and spaced sub-channels, and the number of recesses is multiple; each sub-channel corresponds to each recess; when the rotating column rotates around the third horizontal axis to a predetermined rotation position within the second rotation range, each recess communicates with the corresponding sub-channel.

6. The rice sorting system as described in claim 1, characterized in that, Also includes: A photographing mechanism for photographing the rice grains to be tested in the second conveying channel downstream of the grain separating mechanism; the photographing mechanism includes: a cover placed above a predetermined photographing position on the second conveying channel and a camera located inside the cover and capable of photographing the rice grains to be tested in the second conveying channel downwards.

7. The rice sorting system as described in claim 1, characterized in that, Also includes: A first conveyor belt and a second conveyor belt; the first conveyor channel is formed above the first conveyor channel, and the second conveyor channel is formed above the second conveyor belt.

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