A real-time detection device for rice processing accuracy

Abstract

The present invention discloses a real-time detection device for rice processing accuracy, which relates to the field of optical detection equipment, including a rice milling mechanism, a screening mechanism and a CCD camera; the screening mechanism includes a screening box, a first screening component, a second screening component and a feeding component; a cloth component is provided on the discharging side of the second screening component, so that the rice screened by the second screening component is discharged in a single layer; the CCD camera is provided at the discharging path of the second screening component to collect images of the rice discharged in a single layer. The rice is divided into two parts for screening respectively, which relieves the screening pressure and makes the screening more thorough; the feeding component divides the rice into two parts, which is equivalent to a sampling process for the rice, and the rice image at the second screening component is collected by the CCD camera to detect the rice processing accuracy, so as to realize the real-time detection of the rice processing accuracy, the randomness of the sampling is high, the detection accuracy is improved, and no additional sampling component is required.

Description

Technical Field

[0001] The invention belongs to the field of optical detection equipment, and in particular, relates to a real-time detection device for rice processing accuracy. Background Art

[0002] Rice, also known as rice, is a food made from rice grains after cleaning, husking, milling, and finishing. Rice contains nearly 64% of the nutrients in rice and more than 90% of the nutrients required by the human body. It is also the main food for people in most parts of China. In China, rice is divided into four grades: standard first-grade rice, standard second-grade rice, standard third-grade rice, and standard fourth-grade rice, according to the degree of rice grain skin left on the surface and back groove, that is, the processing accuracy of rice.

[0003] Generally speaking, there are several methods for detecting rice processing accuracy, such as direct comparison method and dyeing image analysis method. The direct comparison method is to compare rice with the corresponding processing accuracy level standard samples and determine the accuracy level through observation. This method is based on subjective experience, and the judgment accuracy is not high and the consistency is poor. It also requires experienced personnel to observe the production situation all the time, which is easy to cause omissions. The dyeing image analysis method requires the rice to be pre-treated and dyed, and then the image is taken to calculate the area ratio of the skin and embryo left, and the rice processing accuracy is judged based on this ratio. This method cannot achieve real-time online processing detection.

[0004] In order to solve the above technical problems, a Chinese invention patent with publication number CN108414532A discloses a rice processing accuracy detection device and a rice processing control system and method; during the rice processing process, the detection device arranges the rice sampled from the upstream rice processing production line into a single rice grain flow through an arrangement device, and controls the rice to slide down the slideway grain by grain, and uses N image acquisition devices to respectively capture images of the sliding rice at corresponding viewing angles to obtain N images, and uses an image processing device to obtain the rice processing accuracy based on M*N images of M rice, thereby realizing online detection of the rice processing accuracy with high detection accuracy.

[0005] When the above detection device is detecting, rice grains need to pass through one by one, and samples can only be taken at fixed positions. The sampling volume is small and the randomness is insufficient, which affects the accuracy of the detection data. Summary of the invention

[0006] In view of the problems in the related art, the present invention proposes a real-time detection device for rice processing accuracy to overcome the above technical problems existing in the existing related art.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention discloses a real-time detection device for rice processing accuracy, comprising a rice milling mechanism, a screening mechanism and a CCD camera; the screening mechanism comprises a screening box, a first screening component, a second screening component and a feeding component; the screening box is provided with a feeding port, and the feeding port is communicated with a discharging end of the rice milling mechanism; the first screening component and the second screening component are both arranged on one side of the feeding component; the feeding component is arranged at the feeding port, and the rice entering at the feeding port is sent to the first screening component and the second screening component for screening respectively; the discharging side of the second screening component is provided with a cloth component, so that the rice screened by the second screening component is discharged in a single layer; the CCD camera is arranged at the discharging path of the second screening component, and collects images of the rice discharged in a single layer.

[0009] As an improvement of the above technical solution, the real-time detection device for rice processing accuracy is described, wherein the feeding assembly includes a first spiral conveying rod, the first spiral conveying rod is located at a position directly below the feed port, and there is a gap between the bottom end of the feed port and the upper end of the first spiral conveying rod; the first screening assembly includes a first screen plate, the feeding end of the first screen plate is located at a position directly below the first spiral conveying rod, and there is a gap between the lower end of the first spiral conveying rod and the upper surface of the first screen plate; the second screening assembly includes a second screen plate, the feeding end of the second screen plate is located on one side of the first spiral conveying rod; the second screen plate is arranged parallel to the upper part of the first screen plate; a feeding channel is arranged on the side of the first spiral conveying rod away from the second screen plate, and the feeding end of the first screen plate is located at the lower part of the feeding channel; sieve holes are arranged on both the first screen plate and the second screen plate.

[0010] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, the cloth assembly includes a baffle, a cloth roller and a cloth motor; the baffle is arranged on the upper part of the second sieve plate, and the lower end of the baffle is connected to the second sieve plate; the cloth roller is arranged in the middle position of the lower end of the baffle; a plurality of cloth grooves are arranged on the roller surface of the cloth roller, the cloth grooves are arranged along the length direction of the cloth roller, and the plurality of cloth grooves are evenly spaced along the circumference of the cloth roller; the width and depth of the cloth grooves are slightly larger than the width of rice; the cloth motor is installed on the outer wall of the screening box, and the driving shaft of the cloth motor is connected to the cloth roller to drive the cloth roller to rotate.

[0011] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, a guide plate is provided on the second sieve plate, the guide plate is located between the baffle and the sieve hole, and the discharge end of the guide plate is facing the cloth roller.

[0012] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, the second sieve plate is provided with drop openings on both sides of the end of the cloth roller, and the drop openings are located on the side of the baffle plate close to the guide plate, and an opening for rice to pass through is provided between the guide plate and the cloth roller; the first sieve plate is located on the drop path of the drop opening.

[0013] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, a pushing assembly is arranged in the screening box, and the pushing assembly is arranged on the feed side of the cloth roller, and is used to push the rice accumulated at the cloth roller into the drop port; the pushing assembly includes a pushing plate, a threaded rod, a slide rail and a pushing motor; the pushing plate is arranged on the feed side of the cloth roller; the central axis of the threaded rod and the cloth roller are arranged in parallel, and both ends of the threaded rod are rotatably mounted on the inner wall of the screening box; the slide rail is arranged on the baffle; one end of the pushing plate is threadedly connected to the threaded rod, and the other end is slidably mounted on the slide rail; the pushing motor is arranged on the outer wall of the screening box, and the driving shaft of the pushing motor is connected to the threaded rod.

[0014] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, a side of the push plate close to the cloth roller is provided with an arc surface, and the arc surface mask is provided on one side of the cloth roller.

[0015] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, a second screw conveying rod is further provided on the upper part of the first sieve plate, and the second screw conveying rod is located between the first sieve plate and the second sieve plate; there are multiple second screw conveying rods, and the multiple second screw conveying rods are evenly spaced in sequence along the length direction of the first sieve plate; the conveying directions of the first screw conveying rod and its adjacent second screw conveying rod are opposite, and the conveying directions of the adjacent second screw conveying rods are opposite.

[0016] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, the distance between the first spiral conveying rod and the plurality of second spiral conveying rods and the first sieve plate gradually increases along the rolling direction of the rice on the first sieve plate.

[0017] As an improvement of the above technical solution, in the real-time detection device for rice processing accuracy, the sub-screening box is provided with a polished rice outlet at a position on one side of the lower end of the first sieve plate, and the discharge end of the first sieve plate and the discharge end of the second sieve plate are both connected to the polished rice outlet; the lower part of the first sieve plate and the lower part of the second sieve plate are provided with receiving plates for receiving broken rice sieved by the first sieve plate and the second sieve plate; the sub-screening box is also provided with a broken rice outlet, and the broken rice outlet is located at the discharge end of the receiving plate at the lower part of the first sieve plate.

[0018] The present invention has the following beneficial effects:

[0019] 1. In the present invention, due to the combined structure of the first sieve plate and the second sieve plate, a part of the processed rice is screened on the first sieve plate, and the other part is screened on the second sieve plate. On the one hand, the rice is divided into two parts and screened separately, which relieves the screening pressure and makes the screening more thorough; on the other hand, the feeding assembly divides the rice into two parts, which is equivalent to a sampling process of the rice, and the rice image at the second screening assembly is collected by a CCD camera to detect the rice processing accuracy, so as to realize the real-time detection of the rice processing accuracy, the randomness of the sampling is high, the detection accuracy is improved, and there is no need to set up a sampling assembly separately; furthermore, the rice is screened at the second screening assembly before image collection, which reduces the interference of broken rice and the like on the image collection.

[0020] 2. In the present invention, the feeding assembly adopts a spiral conveying rod. On the one hand, the rice falling on the spiral conveying rod falls from both sides of the spiral conveying rod to achieve material separation, so that part of the rice enters the first sieve plate and the other part enters the second sieve plate to be screened separately; on the other hand, the spiral conveying rod plays the role of distributing the rice, thereby improving the uniformity of the distribution of the rice on the first sieve plate and the second sieve plate, and further improving the rice screening effect.

[0021] 3. In the present invention, the distribution roller plays the role of distribution, so that the rice falls in a single layer; more importantly, since the width and depth of the distribution trough are only slightly larger than the width of the rice, the rice in the distribution trough is arranged horizontally, so that after the rice falls from the distribution trough, it rolls along the second sieve plate instead of partially sliding and partially rolling. The side images of the rolled rice can be collected by the CCD camera, avoiding the problem that only one side of the sliding rice can be collected while the other side is blocked and cannot be collected, thereby improving the detection accuracy.

[0022] 4. In the present invention, the excess rice at the cloth roller is pushed to the drop port by the pushing assembly, and falls onto the first screen plate from the drop port; since the cloth roller is a single-layer discharge, the second screen plate can only handle a smaller amount of rice screening to avoid clogging at the cloth roller, and through the arrangement of the drop port and the pushing assembly, the cloth roller no longer has the problem of rice accumulation and clogging, so that the second screen plate can handle a larger amount of rice screening, relieve the screening pressure of the first screen plate, and improve the screening effect.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0025] Figure 1 The present invention is a schematic structural diagram of a real-time detection device for rice processing accuracy.

[0026] Figure 2 It is a structural schematic diagram of the screening mechanism of the present invention.

[0027] Figure 3 The internal structure of the screening box of the present invention is shown in FIG. Figure 1 .

[0028] Figure 4 It is a schematic diagram of the relative positions of the first sieve plate and the second sieve plate of the present invention.

[0029] Figure 5 For the present invention Figure 4 A magnified view of the local structure at point A.

[0030] Figure 6 It is a schematic diagram of the structure when the cloth roller of the present invention is completely exposed.

[0031] Figure 7 It is a schematic structural diagram of the present invention when the push plate completely covers the cloth roller.

[0032] Figure 8 It is a schematic diagram of the relative positions of the first spiral conveying rod and the second spiral conveying rod of the present invention.

[0033] In the figure: 100, rice milling mechanism; 200, screening mechanism; 210, screening box; 211, feed inlet; 212, pusher assembly; 2121, pusher plate; 21211, arc surface; 2122, threaded rod; 2123, slide rail; 2124, pusher motor; 213, polished rice outlet; 203, receiving plate; 214, broken rice outlet; 220, first screening assembly; 221, first screen plate; 2211, second spiral conveying rod; 230, second screening assembly; 231, material distribution assembly; 2311, baffle; 2312, material distribution roller; 23121, material distribution trough; 2313, material distribution motor; 232, second screen plate; 2321, guide plate; 2322, material drop port; 240, feeding assembly; 241, first spiral conveying rod; 2411, material drop channel; 300, CCD camera. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0035] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0036] like Figure 1-4 As shown, a real-time detection device for rice processing accuracy comprises a rice milling mechanism 100, a screening mechanism 200 and a CCD camera 300; the screening mechanism 200 comprises a screening box 210, a first screening component 220, a second screening component 230 and a feeding component 240; the screening box 210 is provided with a feed inlet 211, and the feed inlet 211 is connected to the discharge end of the rice milling mechanism 100; the first screening component 220 and the second screening component 230 are both arranged on one side of the feeding component 240; the feeding component 240 is arranged at the feed inlet 211, and sends the rice entering at the feed inlet 211 to the first screening component 220 and the second screening component 230 for screening respectively; the discharging side of the second screening component 230 is provided with a cloth component 231, so that the rice screened by the second screening component 230 is discharged in a single layer; the CCD camera 300 is arranged at the discharge path of the second screening component 230 to collect images of the rice discharged in a single layer.

[0037] The rice milling mechanism 100 is specifically located at the upper part of the screening mechanism 200 (of course, the rice milling mechanism 100 here can also be other mechanisms for fine processing of rice, such as a polishing mechanism), and the feed port 211 connects the rice milling mechanism 100 and the screening mechanism 200. The rice that has been peeled and whitened by the rice milling mechanism 100 enters the screening mechanism 200 through the feed port 211. After the rice enters the screening mechanism 200, a part of the rice is sent to the first screening component 220 for screening through the feeding component 240, and the other part is sent to the second screening component 230 for screening. The rice screened by the second screening component 230 is discharged in a single layer through the cloth component 231. The CCD camera 300 is set at the discharge path of the single-layer discharge of the rice to collect images of the single-layer discharged rice, thereby detecting the processing accuracy of the rice.

[0038] The feeding assembly 240 feeds a part of the rice entering the screening box 210 to the first screening assembly 220 for screening, and the other part to the second screening assembly 230 for screening. On the one hand, the rice is divided into two parts for screening respectively, which relieves the screening pressure and makes the screening more thorough. On the other hand, the feeding assembly 240 divides the rice into two parts, which is equivalent to a sampling process of the rice. The CCD camera 300 collects the rice image at the second screening assembly 230, and the collected image information is used to identify the rice grain surface and the degree of skin retention in the back groove after processing to detect the rice processing accuracy. The sampling is highly random, the detection accuracy is improved, and there is no need to set up a separate sampling assembly. Furthermore, the rice is screened at the second screening assembly 230 and then the image is collected, which reduces the interference of broken rice and the like on image recognition detection.

[0039] like Figure 3-4 As shown, as an improvement of the above technical solution, the feeding assembly 240 includes a first screw conveying rod 241, the first screw conveying rod 241 is located at the lower part of the feed port 211, and there is a gap between the bottom end of the feed port 211 and the upper end of the first screw conveying rod 241; the first screening assembly 220 includes a first screen plate 221, the feeding end of the first screen plate 221 is located at the lower part of the first screw conveying rod 241, and the lower end of the first screw conveying rod 241 and the upper end of the first screen plate 221 are spaced apart from each other. The surface has a spacing; the second screening assembly 230 includes a second screen plate 232, and the feed end of the second screen plate 232 is located on one side of the first spiral conveying rod 241; the second screen plate 232 is arranged parallel to the upper part of the first screen plate 221; a drop channel 2411 is arranged on the side of the first spiral conveying rod 241 away from the second screen plate 232, and the feed end of the first screen plate 221 is located at the lower part of the drop channel 2411; the first screen plate 221 and the second screen plate 232 are both provided with sieve holes.

[0040] The rice falls from the feed port 211 onto the first screw conveyor rod 241, and then falls from both sides of the first screw conveyor rod 241 (the side close to the second sieve plate 232 and the side away from the second sieve plate 232). A portion of the rice falling from the side close to the second sieve plate 232 falls onto the first sieve plate 221 along the threaded channel of the first screw conveyor rod 241, and another portion falls onto the second sieve plate 232 from the outside of the threaded channel of the first screw conveyor rod 241. In order to ensure that the rice can fall onto the second sieve plate 232, the end of the second sieve plate 232 is close to the circumferential surface of the first screw conveyor rod 241, and the projection portion of the first screw conveyor rod 241 from bottom to top in the vertical direction falls. On the second sieve plate 232; the rice falling from the side away from the second sieve plate 232 falls on the first sieve plate 221 through the dropping channel 2411, and then rolls or slides downward through the gap between the first spiral conveying rod 241 and the first sieve plate 221 (of course, the first sieve plate 221 and the second sieve plate 232 are both inclined, and the inclination direction is gradually inclined downward from one end close to the first spiral conveying rod 241 to the other end); the rotation direction of the first spiral conveying rod 241 is to transport the rice falling on the first spiral conveying rod 241 to the side where the second sieve plate 232 is located, ensuring that part of the rice falls from the side of the first spiral conveying rod 241 close to the second sieve plate 232.

[0041] The feeding assembly 240 adopts a first spiral conveying rod 241. On the one hand, the rice falling on the first spiral conveying rod 241 falls from both sides of the first spiral conveying rod 241 to achieve material separation, so that part of the rice enters the first sieve plate 221 and the other part enters the second sieve plate 232 for screening respectively; on the other hand, the rotation of the first spiral conveying rod 241 drives the rice to move along the axial direction of the first spiral conveying rod 241 (i.e., the lateral direction of the first sieve plate 221 and the second sieve plate 232), thereby improving the uniformity of the rice distribution in the lateral direction of the first sieve plate 221 and the second sieve plate 232, that is, the first spiral conveying rod 241 plays the role of a cloth, thereby improving the uniformity of the rice distribution in the first sieve plate 221 and the second sieve plate 232, and further improving the rice screening effect. There is a gap between the first spiral conveying rod 241 and the first sieve plate 221, so that part of the rice always passes through the gap between the first spiral conveying rod 241 and the first sieve plate 221, thereby ensuring the screening efficiency. Of course, the distance between the first spiral conveying rod 241 and the first screen plate 221 is greater than the width of the rice.

[0042] like Figure 4-7As shown, as an improvement of the above technical solution, the cloth assembly 231 includes a baffle 2311, a cloth roller 2312 and a cloth motor 2313; the baffle 2311 is arranged on the upper part of the second sieve plate 232, and the lower end of the baffle 2311 is connected to the second sieve plate 232; the cloth roller 2312 is arranged at the middle position of the lower end of the baffle 2311; a plurality of cloth grooves 23121 are arranged on the roller surface of the cloth roller 2312, the cloth grooves 23121 are arranged along the length direction of the cloth roller 2312, and a plurality of the cloth grooves 23121 are evenly arranged at intervals along the circumference of the cloth roller 2312; the width and depth of the cloth grooves 23121 are slightly larger than the width of rice; the cloth motor 2313 is installed on the outer wall of the screening box 210, and the driving shaft of the cloth motor 2313 is connected to the cloth roller 2312 to drive the cloth roller 2312 to rotate.

[0043] The baffle 2311 is specifically arranged horizontally on the upper part of the second sieve plate 232 to prevent the rice from falling. The left and right ends of the baffle 2311 are fixed on the sub-screening box 210; the distribution roller 2312 is used to make the rice fall in a single layer. Specifically, a distribution groove 23121 is arranged on the roller surface of the distribution roller 2312. The rice on the second sieve plate 232 is screened by the sieve holes on the second sieve plate 232 and rolls down under its own gravity. When it rolls to the distribution roller 2312, it has a certain speed and can enter the distribution roller 2312 when it touches the distribution groove 23121 on the distribution roller 2312. In the material trough 23121, since the width and depth of the distribution trough 23121 are slightly larger than the width of the rice, the rice is arranged horizontally in a single layer in the distribution trough 23121. As the distribution roller 2312 rotates, the distribution trough 23121 containing the rice moves to the side of the baffle 2311 away from the sieve holes. At this time, the rice falls from the distribution trough 23121 and continues to roll down in a single layer along the second sieve plate 232, thereby realizing a single layer of rice on the second sieve plate 232. The CCD camera 300 is set on the side of the baffle 2311 away from the sieve holes to collect images of the single layer of falling rice. On the one hand, the cloth roller 2312 plays the role of cloth, so that the rice falls in a single layer; more importantly, since the width and depth of the cloth trough 23121 are only slightly larger than the width of the rice, the rice in the cloth trough 23121 is arranged horizontally, so that after the rice falls from the cloth trough 23121, it rolls along the second screen plate 232, rather than partially sliding and partially rolling. The side images of the rolled rice can be collected by the CCD camera 300, avoiding the problem that only one side of the sliding rice can be collected while the other side is blocked and cannot be collected, thereby improving the detection accuracy. Generally, the width of rice is about 2mm, and the width and depth of the cloth trough 23121 are designed to be slightly larger than the width of the rice, such as 0.5-1mm larger than the width of the rice.

[0044] like Figure 4As shown, as an improvement of the above technical solution, a guide plate 2321 is provided on the second screen plate 232 , and the guide plate 2321 is located between the baffle 2311 and the screen hole, and the discharge end of the guide plate 2321 faces the cloth roller 2312 .

[0045] The function of the guide plate 2321 is to make the rice screened by the sieve holes on the second sieve plate 232 fall on the distribution roller 2312, ensure that the rice enters the distribution trough 23121 smoothly, and improve the randomness of sampling (the rice that enters the distribution trough 23121 and falls from the side of the baffle 2311 away from the sieve holes is the sample) to ensure the accuracy of detection. There are two guide plates 2321, which are respectively arranged on both sides of the second sieve plate 232. A trumpet-shaped structure is formed between the two guide plates 2321. The large opening end of the trumpet-shaped structure faces the sieve holes of the second sieve plate 232, so that the rice screened by the sieve holes enters between the two guide plates 2321, and the small opening end of the trumpet-shaped structure faces the distribution roller 2312, so that the rice between the two guide plates 2321 falls on the distribution roller 2312.

[0046] like Figure 3 and Figure 7 As shown, as an improvement of the above technical solution, the second sieve plate 232 is provided with drop openings 2322 at both sides of the end of the cloth roller 2312, and the drop openings 2322 are located on the side of the baffle 2311 close to the guide plate 2321, and an opening for rice to pass through is provided between the guide plate 2321 and the cloth roller 2312; the first sieve plate 221 is located on the drop path of the drop opening 2322.

[0047] When a large amount of rice is piled up at the distribution roller 2312, the rice can enter the drop port 2322 from the opening between the guide plate 2321 and the distribution roller 2312, and then fall onto the first screen plate 221, thereby reducing the amount of rice accumulation and the possibility of clogging.

[0048] like Figure 4-5As shown, as an improvement of the above technical solution, a pushing assembly 212 is provided in the screening box 210, and the pushing assembly 212 is arranged on the feeding side of the cloth roller 2312, and is used to push the rice accumulated at the cloth roller 2312 into the drop port 2322; the pushing assembly 212 includes a pushing plate 2121, a threaded rod 2122, a slide rail 2123 and a pushing motor 2124; the pushing plate 2121 is arranged on the feeding side of the cloth roller 2312; the threaded rod 21 22 and the central axis of the cloth roller 2312 are arranged parallel to each other, and both ends of the threaded rod 2122 are rotatably mounted on the inner wall of the screening box 210; the slide rail 2123 is arranged on the baffle 2311; one end of the push plate 2121 is threadedly connected to the threaded rod 2122, and the other end is slidably mounted on the slide rail 2123; the push motor 2124 is arranged on the outer wall of the screening box 210, and the driving shaft of the push motor 2124 is connected to the threaded rod 2122.

[0049] In order to further prevent rice from accumulating at the cloth roller 2312 and causing blockage, the excess rice at the cloth roller 2312 is pushed to the drop port 2322 by the pushing assembly 212, and falls onto the first sieve plate 221 from the drop port 2322; more importantly, when the drop port 2322 and the pushing assembly 212 are not set, due to the single-layer discharge at the cloth roller 2312, the second sieve plate 232 can only handle a smaller amount of rice screening to avoid the problem of easy blockage when the cloth roller 2312 has a large amount of rice processing. By setting the drop port 2322 and the pushing assembly 212, the cloth roller 2312 no longer has the problem of rice accumulation and blockage, so that the second sieve plate 232 can handle a larger amount of rice screening, relieve the screening pressure of the first sieve plate 221, and improve the screening effect. Of course, the first sieve plate 221 still serves as the main screening mechanism to handle a larger amount of rice screening. Specifically: the pusher motor 2124 works, driving the threaded rod 2122 to rotate, so that the pusher plate 2121 moves along the length direction of the threaded rod 2122, that is, the pusher plate 2121 moves along the axial direction of the cloth roller 2312 on the feeding side of the cloth roller 2312. During the movement, the end of the pusher plate 2121 pushes the rice on the feeding side of the cloth roller 2312 into the drop port 2322. When the pusher plate 2121 moves to one side of the inner wall of the screening box 210, the pusher motor 2124 reverses, so that the pusher plate 2121 moves to the other side of the inner wall of the screening box 210, and moves back and forth in sequence to push the material. In order to allow the pusher plate 2121 to move normally and avoid being blocked, the width of the opening between the guide plate 2321 and the cloth roller 2312 should be able to allow the pusher plate 2121 to pass normally. The length of the push plate 2121 is equal to or slightly greater than the length of the cloth roller 2312, and the distance between the end of the cloth roller 2312 and the inner wall of the screening box 210 is greater than the length of the push plate 2121, ensuring that the cloth roller 2312 is fully exposed.

[0050] like Figure 5 As shown, as an improvement of the above technical solution, a side of the push plate 2121 close to the cloth roller 2312 is provided with an arc surface 21211 , and the arc surface 21211 is covered on one side of the cloth roller 2312 .

[0051] An arc surface 21211 is provided on the push plate 2121, so that when the push plate 2121 moves to the side of the cloth roller 2312, it can be covered on the outside of the cloth roller 2312 to prevent the rice in the cloth groove 23121 from sliding on the feeding side during the rotation of the cloth roller 2312, and ensure that a certain amount of rice falls in a single layer after passing through the cloth roller 2312 for processing accuracy detection. Specifically, initially, the material distribution motor 2313 and the material pushing motor 2124 are in a non-working state, and the material pushing plate 2121 is located near the inner wall of the screening box 210, so that the feeding side of the material distribution roller 2312 is completely exposed, and the rice screened by the second screen plate 232 falls to the material distribution roller 2312, and part of the rice enters the material distribution groove 23121, and then the material pushing motor 2124 works to move the material pushing plate 2121 toward the direction close to the material distribution roller 2312. When the material pushing plate 2121 is completely covered outside the material distribution roller 2312, the material pushing motor 2124 stops working, and the material distribution motor 2313 works to drive the material distribution roller 2312 to rotate. The cover is set at the notch of the material distribution groove 23121, and the rice in the material distribution groove 23121 will not fall from the feeding side. With the rotation of the material distribution roller 2312, when the material distribution groove 23121 rotates to the other side, the cover of the push plate 2121 is lost, and the rice falls on the second screen plate 232 due to gravity, and then rolls down along the second screen plate 232. After all the rice on the material distribution roller 2312 falls on the second screen plate 232, the material distribution motor 2313 stops working, and the push motor 2124 starts working again, so that the push plate 2121 moves to the other side of the inner wall of the sub-screen box 210 to fully expose the material distribution roller 2312, and then the push motor 2124 stops working, and the cycle is carried out in sequence. In order to ensure the covering effect of the arc surface 21211 on the notch of the material distribution groove 23121, when the arc surface 21211 covers the outside of the material distribution roller 2312, the arc surface 21211 and the notch of the material distribution groove 23121 have a small distance, such as 0.1-1mm.

[0052] like Figure 4 and Figure 8As shown, as an improvement of the above technical solution, a second screw conveying rod 2211 is further provided on the upper part of the first sieve plate 221, and the second screw conveying rod 2211 is located between the first sieve plate 221 and the second sieve plate 232; there are multiple second screw conveying rods 2211, and the multiple second screw conveying rods 2211 are evenly spaced in sequence along the length direction of the first sieve plate 221; the conveying directions of the first screw conveying rod 241 and its adjacent second screw conveying rod 2211 are opposite, and the conveying directions of the adjacent second screw conveying rods 2211 are opposite.

[0053] By setting a plurality of spiral conveying rods (a first spiral conveying rod 241 and a second spiral conveying rod 2211), and the conveying directions of adjacent spiral conveying rods are opposite, the uniformity of the rice on the first screen plate 221 is further improved, thereby improving the screening effect. The first spiral conveying rod 241 and the plurality of second spiral conveying rods 2211 can be driven by the same driving device (such as a motor, which is specifically installed on the screening box 210), or can be driven separately by a plurality of driving devices.

[0054] like Figure 4 and Figure 8 As shown, as an improvement of the above technical solution, along the rolling direction of the rice on the first screen plate 221, the distances between the first spiral conveying rod 241 and the plurality of second spiral conveying rods 2211 and the first screen plate 221 gradually increase.

[0055] As the rice rolls down along the first sieve plate 221, the content of broken rice and the like becomes smaller and smaller, and the screening pressure becomes smaller and smaller. Along the direction in which the rice rolls downward, the distance between the spiral conveying rod (the first spiral conveying rod 241, the second spiral conveying rod 2211) and the first sieve plate 221 gradually increases, and the resistance to the falling of the rice becomes smaller and smaller, thereby ensuring the screening effect and the screening efficiency.

[0056] like Figure 2 and Figure 4As shown, as an improvement of the above technical solution, the sub-screening box 210 is provided with a polished rice outlet 213 at one side of the lowermost end of the first screen plate 221, and the discharge end of the first screen plate 221 and the discharge end of the second screen plate 232 are both connected to the polished rice outlet 213; the lower parts of the first screen plate 221 and the second screen plate 232 are provided with receiving plates 203, and the two receiving plates 203 are respectively used to receive the broken rice sieved by the first screen plate 221 and the second screen plate 232, the receiving plate 203 at the lower part of the second screen plate 232 is consistent with the second screen plate 232 in inclination direction and has a V-shaped side cross-section, and the discharge end of the receiving plate 203 at the lower part of the second screen plate 232 is connected to the polished rice outlet 213; The material end is connected to a broken rice conveying pipe, and the discharging end of the broken rice conveying pipe is located between the first sieve plate 221 and the corresponding receiving plate 203, so that the broken rice sieved by the first sieve plate 221 and the second sieve plate 232 first falls on the corresponding receiving plates 203 respectively, and the broken rice on the receiving plate 203 below the second sieve plate 232 then falls on the receiving plate 203 below the first sieve plate 221 through the broken rice conveying pipe, and then all the broken rice can fall on the receiving plate 203 below the first sieve plate 221; the sub-screening box 210 is also provided with a broken rice outlet 214, and the broken rice outlet 214 is located at the discharging end of the receiving plate 203 below the first sieve plate 221.

[0057] The screened polished rice falls along the first screen plate 221 or the second screen plate 232, enters the polished rice outlet 213 when it falls to the lower end of the first screen plate 221 or the second screen plate 232, and is finally discharged from the polished rice outlet 213. The screened broken rice falls on the receiving plate 203, and then slides to the broken rice outlet 214 for discharge.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A rice processing precision real-time detection device, comprising a rice milling mechanism (100), a screening mechanism (200) and a CCD camera (300); characterized in that: The screening mechanism (200) comprises a screening box (210), a first screening component (220), a second screening component (230) and a feeding component (240); the screening box (210) is provided with a feed inlet (211), and the feed inlet (211) is connected to the discharge end of the rice milling mechanism (100); the first screening component (220) and the second screening component (230) are both arranged on one side of the feeding component (240); the feeding component (240) is arranged at the feed inlet (211), and sends the rice entering from the feed inlet (211) to the first screening component (220) and the second screening component (230) for screening respectively; the second screening component (230) is provided with a cloth component (231) on the discharge side, so that the rice screened by the second screening component (230) is discharged in a single layer; the CCD camera (300) is arranged at the discharge path of the second screening component (230), and collects images of the rice discharged in a single layer; The feeding assembly (240) comprises a first screw conveying rod (241), the first screw conveying rod (241) is located directly below the feed port (211), and there is a gap between the bottom end of the feed port (211) and the top end of the first screw conveying rod (241); the first screening assembly (220) comprises a first screen plate (221), the feed end of the first screen plate (221) is located directly below the first screw conveying rod (241), and there is a gap between the bottom end of the first screw conveying rod (241) and the top surface of the first screen plate (221); the The second screening assembly (230) comprises a second screen plate (232), wherein a feed end of the second screen plate (232) is located on one side of the first spiral conveying rod (241); the second screen plate (232) is arranged parallel to the upper part of the first screen plate (221); a material drop channel (2411) is arranged on the side of the first spiral conveying rod (241) away from the second screen plate (232), and the feed end of the first screen plate (221) is located at the lower part of the material drop channel (2411); and screen holes are arranged on both the first screen plate (221) and the second screen plate (232); The material distributing assembly (231) comprises a baffle (2311), a material distributing roller (2312) and a material distributing motor (2313); the baffle (2311) is arranged on the upper part of the second sieve plate (232), and the lower end of the baffle (2311) is connected to the second sieve plate (232); the material distributing roller (2312) is arranged at the middle part of the lower end of the baffle (2311); a plurality of material distributing grooves (23121) are arranged on the roller surface of the material distributing roller (2312), and the material distributing motor (2313) is arranged on the roller surface of the material distributing roller (2312). The material trough (23121) is arranged along the length direction of the material distribution roller (2312), and a plurality of the material distribution troughs (23121) are evenly arranged at intervals along the circumference of the material distribution roller (2312); the width and depth of the material distribution trough (23121) are slightly greater than the width of rice; the material distribution motor (2313) is installed on the outer wall of the screening box (210), and the driving shaft of the material distribution motor (2313) is connected to the material distribution roller (2312) to drive the material distribution roller (2312) to rotate; A guide plate (2321) is provided on the second sieve plate (232), the guide plate (2321) is located between the baffle plate (2311) and the sieve hole, and the discharge end of the guide plate (2321) faces the cloth roller (2312); The second sieve plate (232) is provided with a material drop opening (2322) at both sides of the end of the material distribution roller (2312), and the material drop opening (2322) is located on a side of the baffle plate (2311) close to the guide plate (2321), and an opening for rice to pass through is provided between the guide plate (2321) and the material distribution roller (2312); the first sieve plate (221) is located on the material drop path of the material drop opening (2322); A pushing assembly (212) is provided in the screening box (210); the pushing assembly (212) is arranged on the feeding side of the cloth roller (2312) and is used to push the rice accumulated on the cloth roller (2312) into the drop opening (2322); the pushing assembly (212) comprises a pushing plate (2121), a threaded rod (2122), a slide rail (2123) and a pushing motor (2124); the pushing plate (2121) is arranged on the feeding side of the cloth roller (2312); the threaded rod (2122) and the cloth roller (2312) are connected to the pushing plate (2121) and the slide rail (2123) is connected to the pushing motor (2124); The central axes of the rollers (2312) are arranged in parallel, and both ends of the threaded rod (2122) are rotatably mounted on the inner wall of the screening box (210); the slide rail (2123) is arranged on the baffle (2311); one end of the push plate (2121) is threadedly connected to the threaded rod (2122), and the other end is slidably mounted on the slide rail (2123); the push motor (2124) is arranged on the outer wall of the screening box (210), and the drive shaft of the push motor (2124) is connected to the threaded rod (2122).

2. A rice processing precision real-time detection device according to claim 1, characterized in that: A curved surface (21211) is provided on one side of the push plate (2121) close to the cloth roller (2312), and the curved surface (21211) is covered on one side of the cloth roller (2312).

3. A rice processing precision real-time detection device according to claim 1, characterized in that: A second screw conveying rod (2211) is further provided on the upper part of the first sieve plate (221), and the second screw conveying rod (2211) is located between the first sieve plate (221) and the second sieve plate (232); there are a plurality of second screw conveying rods (2211), and the plurality of second screw conveying rods (2211) are evenly spaced and arranged in sequence along the length direction of the first sieve plate (221); the conveying directions of the first screw conveying rod (241) and its adjacent second screw conveying rod (2211) are opposite, and the conveying directions of the adjacent second screw conveying rods (2211) are opposite.

4. A rice processing precision real-time detection device according to claim 3, characterized in that: Along the rolling direction of the rice on the first sieve plate (221), the distances between the first spiral conveying rod (241) and the plurality of second spiral conveying rods (2211) and the first sieve plate (221) gradually increase.

5. The rice processing precision real-time detection device according to claim 1, characterized in that: The screening box (210) is provided with a polished rice outlet (213) at a position on one side of the lowermost end of the first screen plate (221); the discharge end of the first screen plate (221) and the discharge end of the second screen plate (232) are both in communication with the polished rice outlet (213); a receiving plate (203) is provided at the lower part of the first screen plate (221) and the lower part of the second screen plate (232) for receiving broken rice sieved by the first screen plate (221) and the second screen plate (232); and a broken rice outlet (214) is also provided on the screening box (210); the broken rice outlet (214) is located at the discharge end of the receiving plate (203) at the lower part of the first screen plate (221).

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