Intelligent processing equipment and method for rice nutrition rice of mi zhen based on infrared and visual technology

Abstract

The application discloses a rice processing device and method based on infrared and visual technology, which comprises a rice mill, wherein the discharge pressure of the rice mill is adjusted by a discharge port pressure adjusting device, the sieve screen and the side cover of the rice mill are uniformly provided with resistance plate adjusting devices on the circumferences, the resistance plate adjusting devices are used for adjusting the extension position of the resistance plates, a sampling device is arranged at the discharge port of the rice mill, the sampling device is used for sampling the milled rice and transmitting the milled rice to an online visual detection device, and the online visual detection device is used for detecting the milled rice sample. The nutritional components of the milled rice are detected according to the images of the milled rice, so that the milling pressure is adjusted to improve the quality of the rice or the rice with nutritional components, and if the preset requirement is not met, it is judged that the sand roller in the rice mill is worn, and then the controller adjusts the parameters of the resistance plate extension drive and adjusts the position of the resistance plate, so as to compensate for the defects of the quality reduction of the rice or the rice with nutritional components caused by the increased gap of the worn sand roller.

Description

Technical Field

[0001] This invention relates to the field of rice processing and production technology, and in particular to intelligent processing equipment and methods for Mizhen Nutritional Rice based on infrared and vision technologies. Background Technology

[0002] Milling rice to extract rice bran or produce rice bran nutrient rice is currently the physical separation method in the production of rice bran and rice bran nutrient rice. By setting the sand particle size and milling pressure of the rice milling machine, the outer bran layer, aleurone layer and germ are separated through milling. In order to produce higher quality rice bran or rice bran nutrient rice, a technology has now been developed to detect the rice milling process through visual inspection.

[0003] Chinese patent document CN114425465A discloses an online detection method for rice nutrients, an intelligent rice milling control method, and an apparatus. The method involves selecting rice samples milled to different layers, inputting these samples into a machine vision detection device to obtain multiple types of machine vision samples, detecting the nutrients in each type of sample, and extracting feature values ​​from the machine vision samples. These feature values ​​are then converted into feature vectors, which are used to train a neural network to obtain classification features and a classifier for each type of sample. For each rice sample being detected, the classifier is used to obtain its corresponding classification features, which are then used to match the corresponding machine vision sample class, thereby determining the nutrient content of that sample class. This method enables the detection of nutrients in milled rice using visual inspection technology.

[0004] Patent document CN114260042B discloses an intelligent control system and grain processing equipment for a grain surface grinding and milling device. The intelligent control system includes a data acquisition module; a pressure control loop for controlling the target output pressure of the grain surface grinding and milling device based on the grinding pressure data acquired by the data acquisition module; and a process control loop for flexibly adjusting the target output pressure to match the target processing accuracy. By controlling the grinding pressure and flow rate through sensing during the grinding process, the quality of rice processing can be improved.

[0005] Patent document CN114160234A discloses a method for controlling the rice milling process and a rice milling production line. The method uses rice to be processed as the input to the first rice milling machine in the pre-processing step, and a pre-processed sample as the output target of the last rice milling machine in the pre-processing step. A neural network is trained to determine the milling pressure of the first to Nth rice milling machines in the pre-processing step; wherein the Nth rice milling machine is the last rice milling machine in the pre-processing step. The pre-processed sample refers to a sample with the outer bran completely removed and the aleurone layer intact. Using the pre-processed sample as the input to the first rice milling machine in the finished product process, and a sample with the aleurone layer completely removed and the endosperm intact as the output of the last rice milling machine in the finished product process, the neural network is trained to determine the target achievement rate of the first to Mth rice milling machines in the finished product process; wherein the Mth rice milling machine is the last rice milling machine in the finished product process. By cascading multiple rice milling processes and adjusting the milling pressure of each process, higher quality rice milling products and rice are obtained.

[0006] The core equipment in the aforementioned existing technologies is a rice milling machine, and the structure of the rice milling machine is as follows: Figure 1-5 As shown, as Figure 1 and 2 As shown, raw rice enters the rice milling machine through the feed inlet. Guided by the feed roller, it enters the gap between the sand roller and the resistance plate below. The rotation of the sand roller causes the rice to be crushed between the sand roller and the resistance plate, and the outer layer of the rice is peeled off. The discharge port below is equipped with a pressure bar to control the discharge pressure. The discharge pressure determines the degree of compression of the rice in the rice milling space of the rice milling machine, thereby determining the degree of peeling of the outer layer of the rice.

[0007] The aforementioned device for controlling the discharge pressure already exists in existing technology. For example, patent document CN112317012A describes a rice milling machine and its rice milling pressure control method. The rice milling pressure of the rice milling machine is determined by real-time sensing of the discharge pressure of the rice milling machine, and the actual rice milling pressure is kept stable at the target rice milling pressure, thereby ensuring the uniform quality of rice milling and the precise matching between the rice milling pressure and the target rice milling precision.

[0008] Existing rice milling machines, during use, such as Figure 3 As shown, it is necessary to ensure that the gap between the resistance plate and the sand roller is 6mm, and to utilize... Figure 4 The standard adjustment gauge shown is used to ensure this spacing; the adjustment structure of the resistance plate is as follows: Figure 5As shown, the extension and retraction of the resistance plate are adjusted by the upper and lower knobs, and locked by the middle knob. In actual use, this standard distance of 6mm can only guarantee the milling of most types of rice. When milling rice with special particle sizes and lengths, additional adjustments are needed to the gap between the resistance plate and the abrasive roller to ensure optimal processing quality. However, due to different production batches, it is often necessary to change the type of rice during production. After the change, the position of the resistance plate needs to be adjusted, and multiple adjustments are required during the production process based on the processing test results of the rice, which is very cumbersome and inconvenient. Furthermore, the wear of the abrasive roller caused by rice milling will increase the gap between the resistance plate and the abrasive roller, thereby reducing the quality and instability of rice processing. This makes the stability of the rice milling process a technical bottleneck in the processing of high-quality rice and rice-flavored nutritious rice. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide an intelligent processing equipment and method for Mizhen nutritional rice based on infrared and vision technology, so as to solve the problem of unstable quality of existing rice processing Mizhen and Mizhen nutritional rice.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0011] The Mizhen Nutritional Rice Intelligent Processing Equipment, based on infrared and vision technology, includes a rice milling machine. The discharge pressure of the rice milling machine is regulated by a discharge port pressure regulating device. Resistance plate regulating devices are evenly distributed on the circumference of the screen and side cover of the rice milling machine. The resistance plate regulating devices are used to adjust the extension and retraction positions of the resistance plates. A sampling device is installed at the discharge port of the rice milling machine. The sampling device is used to sample the milled rice and transmit it to an online visual inspection device. The online visual inspection device inspects the milled rice sample and transmits the inspection results to a controller. The controller adjusts the discharge pressure regulating drive and the resistance plate extension and retraction drive according to the inspection results to control the milling pressure and the milling gap space.

[0012] The rice milling machine described above is equipped with a rice bran near-infrared detection device at the bran suction pipe. The rice bran near-infrared detection device is used to perform near-infrared spectral detection on the components of rice bran that are peeled off after rice milling. The near-infrared spectral detection results are transmitted to the controller. The near-infrared spectral detection results are combined with the results of online visual detection to determine the nutritional components of Mizhen or Mizhen Nutritional Rice, that is, the degree of qualification of rice milling.

[0013] The controller is connected to the analog module, and the output of the analog module is electrically connected to the discharge pressure regulating driver and the resistance plate extension driver.

[0014] The aforementioned resistance plate adjustment device includes an adjustment frame, with the resistance plate in sliding contact with the adjustment frame. The two sides of the rear end of the resistance plate are wedge-shaped, and the two wedge-shaped sides of the resistance plate match the abutments at both ends. The abutments are supported by springs and provide a force for the resistance plate to retract backward. The rear end plane of the resistance plate contacts the transmission block, which is controlled by a resistance plate telescopic motor to slide back and forth, thereby enabling the resistance plate to telescopically extend and retract.

[0015] The aforementioned transfer block slides in contact with the adjusting frame. The rear end of the transfer block is provided with a nut and a groove. The resistance plate telescopic motor is fixedly connected to the rotating screw. The end of the rotating screw meshes with the nut of the transfer block and extends into the groove.

[0016] The aforementioned transfer block has a sliding contact clamping wedge at its rear end. The clamping wedge has wedge-shaped sidewalls at both ends that match the inner wall of the adjusting frame. The clamping wedge is driven by the extension and retraction electromagnetic coil of the clamping rod to slide back and forth, thereby clamping and releasing the transfer block. The rotating screw passes through the middle of the clamping wedge.

[0017] The aforementioned clamping wedge has clamping wedge push rods fixedly connected to both sides of its rear end. The clamping wedge push rods are made of ferromagnetic material. The clamping rod telescopic electromagnetic coil and the resistance plate telescopic motor are fixedly connected to the mounting frame. The mounting frame is fixedly connected to the rear end of the adjustment frame.

[0018] The clamping wedge push rod passes through the rear clamping rod telescopic electromagnetic coil and the mounting bracket. The clamping wedge push rod on one side of the mounting bracket has a boss, and a clamping spring is provided between the boss and the inner side of the mounting bracket.

[0019] The aforementioned adjusting frame has a resistance plate groove at the front that slides in contact with the resistance plate. Abutment receiving grooves are provided on both sides of the resistance plate groove, and these grooves slide in contact with the abutment blocks. A connecting transmission cavity is provided at the rear end of the resistance plate groove. The rear surface of the resistance plate contacts the transmission block at the transmission cavity. A connecting transmission block groove and a clamping wedge receiving groove are provided at the rear end of the transmission cavity.

[0020] The transfer block groove and the clamping wedge receiving groove slide in contact with the transfer block and the clamping wedge respectively; the bottom of the adjustment frame is provided with connecting plates on both sides, and the connecting plates are provided with bolt connection holes and pin holes.

[0021] The top of the aforementioned adjustment frame is fixedly connected to and positioned by the positioning plate, the positioning plate is fixedly connected to and positioned by the feed inlet frame, and the connecting plate is fixedly connected to and positioned by the lower frame of the rice milling machine.

[0022] The processing method using the above-mentioned intelligent processing equipment for Mizhen nutritional rice based on infrared and vision technologies includes the following specific steps:

[0023] Step 1: Equipment initialization before processing; depending on the type of rice to be milled, the online visual inspection device and the near-infrared detection device for rice bran call the corresponding visual nutrient composition model and near-infrared spectral nutrient composition model of rice pearls or rice pearl nutrient rice. The resistance plate is in the initial processing position, the initial pressure of the discharge port is set, and the clamping wedge is in the clamping state; the controller selects the milling degree of the corresponding rice pearls or rice pearl nutrient rice according to the type of rice.

[0024] Step 2: First, place 500KG of clean rice in the bin above the rice milling machine. First, start the rice bran suction fan, then start the motor of the rice milling machine. Then, open the feeding valve and adjust the flow rate of white rice through the feeding valve.

[0025] Step 3: After 500KG of clean rice is discharged from the rice milling machine outlet, add the rice to be processed into the bin above the rice milling machine. The rice to be processed enters the rice milling machine.

[0026] Step 4: When the grinding pressure inside the rice milling machine is greater than the initial pressure set at the discharge port, the milled rice is discharged from the discharge port. The sampling device takes a sample of the milled rice and sends it to the online visual inspection device for milling. At the same time, the rice bran near-infrared detection device performs near-infrared spectral detection on the rice bran that is peeled off during milling.

[0027] Step 5: The online visual inspection device for rice milling performs visual inspection on the sampled milled rice and compares it with the built-in visual nutrient composition model to determine the current degree of milling of the rice. At the same time, the near-infrared detection device for rice bran determines the composition of rice bran based on the near-infrared spectral detection results and judges the current degree of milling of rice based on the built-in near-infrared spectral nutrient composition model. The controller calculates the final degree of milling by the ratio of the two results and compares the calculated degree of milling with the set degree of milling to obtain the net value of the discharge port pressure that needs to be adjusted.

[0028] Step 6: The controller converts the net value of the outlet pressure that needs to be adjusted into an analog signal for the outlet pressure regulating driver through the analog signal module. The outlet pressure regulating driver then controls the outlet pressure regulating device to adjust the outlet pressure.

[0029] Step 7: After adjusting the discharge port pressure, repeat Step 4-Step 6 after the set time t1 until the milled rice meets the set milling degree.

[0030] Step 8: If, after the first adjustment of the discharge port pressure, t2 > t1 after the set time t2, the milled rice still does not meet the set degree of milling, it indicates that the sand roller is worn and the resistance plate needs to be adjusted. Proceed to Step 9.

[0031] Step 9: Based on the difference between the degree of rice grinding obtained after the set time t2 and the set degree of grinding, the wear amount of the outer diameter of the sand roller is obtained. The controller converts the wear amount of the outer diameter into the amount that the resistance plate needs to extend into, and converts it into the analog value required by the resistance plate extension driver through the analog module. The resistance plate extension driver controls the resistance plate to move forward and reach the specified position.

[0032] Step 10: Based on the results of the grinding degree after adjusting the resistance plate, continue to adjust the resistance plate as described in Step 9 until the ground rice meets the set grinding degree.

[0033] The present invention provides an intelligent processing equipment and method for rice-based nutritional rice using infrared and vision technologies. The equipment detects the nutritional components of the milled rice based on captured images. A controller adjusts the control parameters of the discharge pressure regulating driver to regulate the milling pressure, thereby improving the quality of the produced rice-based nutritional rice. Based on the rice sampling and testing results after adjusting the discharge pressure, the system determines whether the improvement in the rice's nutritional components is within a preset range. If it does not meet the preset requirements, it is determined that the sand rollers inside the rice mill are worn. The controller then adjusts the parameters of the resistance plate extension driver to adjust the position of the resistance plate, thereby compensating for the quality decline of the rice-based nutritional rice caused by increased gaps after sand roller wear. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] Figure 1 Schematic diagram of an existing rice milling machine Figure 1 ;

[0036] Figure 2 Schematic diagram of an existing rice milling machine Figure 2 ;

[0037] Figure 3 A schematic diagram showing the resistance plate adjustment requirements of an existing rice milling machine;

[0038] Figure 4 This is a schematic diagram of the resistance plate adjustment process in an existing rice milling machine.

[0039] Figure 5 This is a schematic diagram of the resistance plate adjustment structure of an existing rice milling machine;

[0040] Figure 6 This is a schematic diagram of the structure of the rice milling machine of the present invention;

[0041] Figure 7 This is a cross-sectional view of the rice milling machine of the present invention;

[0042] Figure 8This is a schematic diagram of the resistance plate adjustment device of the present invention;

[0043] Figure 9 for Figure 8 Enlarged view of a portion of the image;

[0044] Figure 10 This is a schematic diagram of the adjustment frame.

[0045] Figure 11 This is a partial sectional view of the rice milling machine of the present invention.

[0046] In the diagram: 1. Sand roller; 2. Screen; 3. Side cover; 4. Pin hole; 5. Resistance plate adjustment device; 5. Adjustment frame; 51. Resistance plate slide groove; 511. Abutment block receiving groove; 512. Transmission block slide groove; 513. Clamping wedge receiving groove; 514. Transmission cavity; 515. Connecting plate; 52. Resistance plate; 6. Abutment block; 7. Transmission block; 8. Clamping wedge; 9. Rotating screw; 10. Resistance plate telescopic motor; 11. Clamping rod telescopic electromagnetic coil; 12. Clamping wedge push rod; 13. Clamping spring; 14. Mounting frame; 15. Feeding roller; 16. Feed inlet frame; 17. Rice mill; 18. Online visual inspection device for milling; 19. Rice bran near-infrared detection device; 20. Controller; 21. Analog module; 22. Discharge pressure adjustment driver; 23. Resistance plate telescopic driver; 24. Sampling device; 25. Bran suction pipe; 26. Discharge port pressure adjustment device; 27. Positioning plate; 28. Lower frame of rice mill; 29. ​​Coupling; 30. Detailed Implementation

[0047] Example:

[0048] The Mizhen Nutritional Rice Intelligent Processing Equipment based on infrared and vision technology includes a rice milling machine 18. The discharge pressure of the rice milling machine 18 is regulated by a discharge port pressure regulating device 27. Resistance plate regulating devices 5 are evenly distributed on the circumference of the screen 2 and side cover 3 of the rice milling machine 18. The resistance plate regulating devices 5 are used to adjust the extension and retraction position of the resistance plate 6. A sampling device 25 is provided at the discharge port of the rice milling machine 18. The sampling device 25 is used to sample the milled rice and transmit it to the online visual inspection device 19. The online visual inspection device 19 inspects the milled rice sample and transmits the inspection results to the controller 21. The controller 21 adjusts the discharge pressure regulating driver 23 and the resistance plate extension and retraction driver 24 according to the inspection results to control the milling pressure and the milling gap space.

[0049] like Figure 6 and 7As shown, after sampling by sampling device 25, online visual inspection device 19 of milling performs visual inspection on the milled rice. The online visual inspection device 19 of milling is equipped with an artificial neural network model of rice image information acquired by machine vision. Based on the captured rice image, the appearance of the milled rice is detected and analyzed. According to the comparison with the preset target of rice pearls or rice pearl nutritious rice, controller 21 can adjust the control parameters of discharge pressure regulating driver 23, thereby adjusting the milling pressure to improve the quality of the produced rice pearls or rice pearl nutritious rice. Based on the sampling and inspection results of rice after adjusting the discharge pressure, it is determined whether the improvement of rice nutritional components is within the preset range. If the preset requirements are not met, it is determined that the sand roller 1 in the rice milling machine 18 is worn. Controller 21 then adjusts the parameters of resistance plate extension driver 24 and adjusts the position of resistance plate 6 to compensate for the defect of decreased quality of rice pearls or rice pearl nutritious rice caused by the increased gap after the sand roller 1 is worn.

[0050] The rice milling machine 18 described above is equipped with a rice bran near-infrared detection device 20 at the bran suction pipe 26. The rice bran near-infrared detection device 20 is used to perform near-infrared spectral detection on the rice bran components that are peeled off after rice milling. The near-infrared spectral detection results are transmitted to the controller 21. The near-infrared spectral detection results are combined with the results of online visual detection to determine the nutritional components of rice bran or rice bran nutritional rice.

[0051] like Figure 6 As shown, the rice bran near-infrared detection device 20 contains finished product test samples of different types and different degrees of milling. It judges the current degree of milling of rice based on the rice bran component detection results at the bran suction tube 26, and combines it with the detection results of online vision to improve detection accuracy. At the same time, when the near-infrared spectroscopy detects that the starch content exceeds the preset range, it indicates that the rice has been milled to the endosperm layer. At this time, an alarm signal can be issued by the controller 21.

[0052] The controller 21 is connected to the analog module 22, and the output of the analog module 22 is electrically connected to the discharge pressure regulating driver 23 and the resistance plate extension driver 24.

[0053] The analog module 22 outputs analog voltage or current signals to the discharge pressure regulating driver 23 and the resistance plate extension driver 24 to adjust the discharge pressure and the position of the resistance plate.

[0054] The aforementioned resistance plate adjustment device 5 includes an adjustment frame 51, a resistance plate 6 that slides in contact with the adjustment frame 51, and two wedge-shaped sides at the rear end of the resistance plate 6. The two wedge-shaped sides of the resistance plate 6 match the abutment blocks 7 at both ends. The abutment blocks 7 are supported by springs and provide a force for the resistance plate 6 to retract backward. The rear end plane of the resistance plate 6 contacts the transmission block 8. The transmission block 8 is controlled by the resistance plate telescopic motor 11 to slide back and forth, thereby enabling the resistance plate 6 to extend and retract.

[0055] like Figure 8 and 9 As shown, the telescopic mechanism of the resistance plate adjusting device 5 is set in a segmented form of resistance plate 6, abutment block 7 and transmission block 8, rather than an integral form. This allows for quick replacement in case of malfunction of the resistance plate or the internal structure of the resistance plate adjusting device 5, and also facilitates assembly.

[0056] The aforementioned transfer block 8 is in sliding contact with the adjusting frame 51. The rear end of the transfer block 8 is provided with a nut and a groove. The resistance plate telescopic motor 11 is fixedly connected to the rotating screw 10. The end of the rotating screw 10 meshes with the nut of the transfer block 8 and extends into the groove.

[0057] like Figure 8 and 9 As shown, the shaft end of the resistance plate telescopic motor 11 is fixedly connected to the rotating screw 10 through the coupling 30. The rotation of the resistance plate telescopic motor 11 drives the transmission block 8 to slide back and forth, thereby realizing the telescopic movement of the resistance plate 6.

[0058] The aforementioned transfer block 8 has a sliding contact clamping wedge 9 at its rear end. The clamping wedge 9 has wedge-shaped sidewalls at both ends that match the inner wall of the adjusting frame 51. The clamping wedge 9 is driven by the clamping rod telescopic electromagnetic coil 12 to slide back and forth to achieve the clamping and loosening of the transfer block 8. The rotating screw 10 passes through the middle of the clamping wedge 9.

[0059] The aforementioned clamping wedge 9 has clamping wedge push rods 13 fixedly connected to both sides of its rear end. The clamping wedge push rods 13 are made of ferromagnetic material. The clamping rod telescopic electromagnetic coil 12 and the resistance plate telescopic motor 11 are fixedly connected to the mounting frame 15. The mounting frame 15 is fixedly connected to the rear end of the adjusting frame 51.

[0060] The clamping wedge push rod 13 passes through the clamping rod telescopic electromagnetic coil 12 and the mounting bracket 15 at the rear. The clamping wedge push rod 13 on one side of the mounting bracket 15 is provided with a boss, and a clamping spring 14 is provided between the boss and the inner side of the mounting bracket 15.

[0061] like Figure 9 As shown, a clamping rod telescopic electromagnetic coil 12 is provided on each side of the resistance plate telescopic motor 11. When the clamping rod telescopic electromagnetic coil 12 is energized, it generates a magnetic field in the axial direction of the clamping wedge push rod 13, which pulls the clamping wedge push rod 13 backward to release the transmission block 8. When the clamping rod telescopic electromagnetic coil 12 is de-energized, the clamping spring 14 pushes the clamping wedge push rod 13 forward to achieve clamping.

[0062] The aforementioned adjusting frame 51 has a resistance plate groove 511 at its front end that slides in contact with the resistance plate 6. The resistance plate groove 511 has block receiving grooves 512 on both sides, which slide in contact with the block 7. The rear end of the resistance plate groove 511 has a connected transmission cavity 515. The rear surface of the resistance plate 6 contacts the transmission block 8 at the transmission cavity 515. The rear end of the transmission cavity 515 has a connected transmission block groove 513 and a clamping wedge receiving groove 514.

[0063] The transfer block groove 513 and the clamping wedge receiving groove 514 slide in contact with the transfer block 8 and the clamping wedge 9 respectively; the bottom of the adjusting frame 51 is provided with connecting plates 52 on both sides, and the connecting plates 52 are provided with bolt connection holes and pin holes 4.

[0064] The top of the aforementioned adjusting frame 51 is fixedly connected to and positioned by the positioning plate 28, the positioning plate 28 is fixedly connected to and positioned by the feed inlet frame 17, and the connecting plate 52 is fixedly connected to and positioned by the lower frame 29 of the rice milling machine.

[0065] like Figure 11 As shown, the upper part of the adjusting frame 51 is fixedly connected to the positioning plate 28, the positioning plate 28 is fixedly connected to the feed inlet frame 17, and the connecting plate 52 at the bottom of the adjusting frame 51 is fixedly connected to the lower frame 29 of the rice milling machine. In this way, the rice milling machine 18 forms a rigid frame from bottom to top, with the lower frame 29 of the rice milling machine, the resistance plate adjusting device 5 and the feed inlet frame 17 as the main components, and achieves positioning. This makes it convenient for the screen 2 and the side cover 3 to form a circle based on both sides of the resistance plate adjusting device 5, ensuring the adjustment basis of the resistance plate 6.

[0066] In production, higher precision quality control of rice grains or rice grain nutrient rice can be achieved by cascading multiple rice milling machines 18 and combining visual inspection and near-infrared inspection.

[0067] The processing method using the above-mentioned intelligent processing equipment for Mizhen nutritional rice based on infrared and vision technologies includes the following specific steps:

[0068] Step 1: Equipment initialization before processing; depending on the type of rice to be milled, the online visual inspection device 19 and the near-infrared detection device 20 for rice bran call the corresponding visual nutrient composition model and near-infrared spectral nutrient composition model of rice bran or rice bran nutrient rice. The resistance plate 6 is in the initial processing position, the initial pressure of the discharge port is set, and the clamping wedge 9 is in the clamping state; the controller 21 selects the milling degree of the corresponding rice bran or rice bran nutrient rice according to the type of rice.

[0069] Step 2: First, place 500KG of clean rice in the bin above the rice milling machine 18. First, start the bran suction fan, then start the motor of the rice milling machine 18. Then, open the feeding valve and adjust the rice flow rate through the feeding valve.

[0070] Using clean rice first can prevent rice bran from sticking to the rough surface of the grinding roller. If rice bran sticks to the grinding roller, the rice bran will continue to stick and the thickness of the sticky rice bran will increase, which will reduce the grinding effect. In addition, the grinding roller with sticky rice bran is not easy to clean, which will make it impossible to maintain subsequent operations.

[0071] Step 3: After 500KG of clean rice is discharged from the outlet of rice milling machine 18, add the rice to be processed into the bin above rice milling machine 18. The rice to be processed enters rice milling machine 18.

[0072] Step 4: When the grinding pressure inside the rice milling machine 18 is greater than the initial pressure of the discharge port, the milled rice is discharged from the discharge port. The sampling device 25 takes a sample of the milled rice and sends it to the online visual inspection device 19. At the same time, the rice bran near-infrared detection device 20 performs near-infrared spectral detection on the rice bran that is peeled off during the milling process.

[0073] Step 5: The online visual inspection device 19 of the rice milling system performs visual inspection on the sampled milled rice and compares it with the built-in visual nutrient composition model to determine the current degree of milling of the rice. At the same time, the near-infrared rice bran detection device 20 determines the composition of the rice bran based on the near-infrared spectrum detection results and judges the current degree of milling of the rice based on the built-in near-infrared spectrum nutrient composition model. The controller 21 calculates the final degree of milling by the ratio of the two results and compares the calculated degree of milling with the set degree of milling to obtain the net value of the discharge port pressure that needs to be adjusted.

[0074] Step 6: The controller 21 converts the net value of the outlet pressure that needs to be adjusted into an analog signal of the outlet pressure regulating driver 23 through the analog signal module 22. The outlet pressure regulating driver 23 controls the outlet pressure regulating device 27 to regulate the outlet pressure.

[0075] Step 7: After adjusting the discharge port pressure, repeat Step 4-Step 6 after the set time t1 until the milled rice meets the set milling degree.

[0076] Step 8: If, after the first adjustment of the discharge port pressure, t2 > t1 after the set time t2, the milled rice still does not meet the set degree of milling, it indicates that the sand roller 1 is worn and the resistance plate 6 needs to be adjusted. Proceed to Step 9.

[0077] Step 9: Based on the difference between the degree of rice milling obtained after the set time t2 and the set degree of milling, the wear amount of the outer diameter of the sand roller 1 is obtained. The controller 21 converts the wear amount of the outer diameter into the amount that the resistance plate 6 needs to extend into, and converts it into the analog value required by the resistance plate extension driver 24 through the analog module 22. The resistance plate extension driver 24 controls the resistance plate 6 to move forward and reach the specified position.

[0078] Step 10: Based on the results of the grinding degree after adjusting the resistance plate 6, continue to adjust the resistance plate 6 in Step 9 until the ground rice meets the set grinding degree.

Claims

1. A method for the intelligent processing of rice based on infrared and visual technology, characterized in that: The rice mill (18) is provided with a discharge pressure adjusting device (27) for adjusting the discharge pressure of the rice mill (18), and the screen (2) and the side cover (3) of the rice mill (18) are uniformly provided with resistance plate adjusting devices (5) on the circumference, and the resistance plate adjusting devices (5) are used for adjusting the extension position of the resistance plate (6), and the discharge port of the rice mill (18) is provided with a sampling device (25) for sampling the milled rice and transmitting the milled rice to the online visual detection device (19), and the online visual detection device (19) detects the milled rice sample and transmits the detection result to the controller (21), and the controller (21) adjusts the discharge pressure adjusting drive (23) and the resistance plate extension drive (24) according to the detection result to control the milling pressure and the milling gap space; The rice mill (18) is provided with a discharge pressure adjusting device (27) for adjusting the discharge pressure of the rice mill (18), and the screen (2) and the side cover (3) of the rice mill (18) are uniformly provided with resistance plate adjusting devices (5) on the circumference, and the resistance plate adjusting devices (5) are used for adjusting the extension position of the resistance plate (6), and the discharge port of the rice mill (18) is provided with a sampling device (25) for sampling the milled rice and transmitting the milled rice to the online visual detection device (19), and the online visual detection device (19) detects the milled rice sample and transmits the detection result to the controller (21), and the controller (21) adjusts the discharge pressure adjusting drive (23) and the resistance plate extension drive (24) according to the detection result to control the milling pressure and the milling gap space; The controller (21) is in communication connection with the analog module (22), and the output end of the analog module (22) is electrically connected with the discharge pressure adjusting drive (23) and the resistance plate extension drive (24); The resistance plate adjusting device (5) comprises an adjusting frame (51), the resistance plate (6) is in sliding contact with the adjusting frame (51), and the rear end plane of the resistance plate (6) is in contact with the transmission block (8); The rear end of the transmission block (8) is provided with a clamping wedge (9) in sliding contact, the clamping wedge (9) has wedge-shaped side walls at both ends and is matched with the inner wall of the adjusting frame (51), the clamping wedge (9) is driven by the clamping rod extension electromagnetic coil (12) to slide forward and backward to realize clamping and loosening of the transmission block (8), and the rotating screw (10) penetrates the middle part of the clamping wedge (9); The specific steps of processing are: Step 1, initialization of the equipment before processing; according to the type of rice to be milled, the online visual detection device (19) and the rice bran near-infrared detection device (20) call the corresponding visual nutrient component model and near-infrared spectrum nutrient component model of the rice or the nutrient rice, the resistance plate (6) is in the initial processing position, the initial pressure of the discharge port is set, and the clamping wedge (9) is in the clamping state; the controller (21) selects the corresponding milling degree of the rice or the nutrient rice according to the type of rice; Step 2, first use 500KG clean rice to place in the bin above the rice mill (18), first start the rice bran suction fan, then start the motor of the rice mill (18), then open the feeding valve and adjust the white rice flow through the feeding valve; Step 3, after 500KG clean rice is discharged from the discharge port of the rice mill (18), add the rice to be processed in the bin above the rice mill (18), and the rice to be processed enters the rice mill (18); Step 4: When the grinding pressure inside the rice mill (18) is greater than the initial pressure of the discharge port, the milled rice is discharged from the discharge port. The sampling device (25) takes a sample of the milled rice and sends it to the online visual inspection device (19). At the same time, the rice bran near-infrared detection device (20) performs near-infrared spectral detection on the rice bran that is peeled off during milling. Step 5: The online visual inspection device (19) performs visual inspection on the sampled milled rice and compares it with the built-in visual nutrient composition model to determine the current degree of milling of the rice; at the same time, the near-infrared detection device (20) determines the composition of the rice bran based on the near-infrared spectrum detection results and judges the current degree of milling of the rice based on the built-in near-infrared spectrum nutrient composition model. The controller (21) calculates the final degree of milling by the ratio of the two results and compares the calculated degree of milling with the set degree of milling to obtain the net value of the discharge port pressure that needs to be adjusted. Step 6: The controller (21) converts the net value of the outlet pressure that needs to be adjusted into an analog quantity of the outlet pressure regulating driver (23) through the analog quantity module (22). The outlet pressure regulating driver (23) controls the outlet pressure regulating device (27) to regulate the outlet pressure. Step 7: After adjusting the discharge port pressure, repeat Step 4-Step 6 after the set time t1 until the milled rice meets the set milling degree. Step 8: If, after the first adjustment of the discharge port pressure, t2 > t1 after the set time t2, the milled rice still does not meet the set degree of milling, it indicates that the sand roller (1) is worn and the resistance plate (6) needs to be adjusted. Proceed to Step 9. Step 9: Based on the difference between the degree of rice grinding obtained after the set time t2 and the set degree of grinding, the wear amount of the outer diameter of the sand roller (1) is obtained. The controller (21) converts the wear amount of the outer diameter into the amount that the resistance plate (6) needs to extend into, and converts it into the analog value required by the resistance plate extension driver (24) through the analog quantity module (22). The resistance plate extension driver (24) controls the resistance plate (6) to move forward and reach the specified position. Step 10: Based on the results of the grinding degree after adjusting the resistance plate (6), continue to adjust the resistance plate (6) as described in Step 9 until the ground rice meets the set grinding degree.

2. The method for intelligent processing of nutritious rice according to claim 1, wherein, The resistance plate (6) has wedge-shaped ends on both sides. The wedge-shaped ends of the resistance plate (6) match the abutment blocks (7) at both ends. The abutment blocks (7) are supported by springs and provide the force for the resistance plate (6) to retract backward. The transmission block (8) is controlled by the resistance plate telescopic motor (11) to slide back and forth, thereby enabling the resistance plate (6) to extend and retract.

3. The method for intelligent processing of nutritious rice according to claim 2, wherein, The transfer block (8) slides in contact with the adjustment frame (51). The rear end of the transfer block (8) is provided with a nut and a groove. The resistance plate telescopic motor (11) is fixedly connected to the rotating screw (10). The end of the rotating screw (10) meshes with the nut of the transfer block (8) and extends into the groove.

4. The method for intelligent processing of nutritious rice according to claim 3, wherein, The rear end of the clamping wedge (9) is provided with fixedly connected clamping wedge push rods (13), the clamping wedge push rods (13) are ferromagnetic materials, the clamping rod telescopic electromagnetic coil (12) and the resistance plate telescopic motor (11) are fixedly connected with the mounting frame (15), and the mounting frame (15) is fixedly connected with the rear end of the adjusting frame (51). The clamping wedge push rods (13) penetrate through the rear clamping rod telescopic electromagnetic coil (12) and the mounting frame (15), the clamping wedge push rods (13) on one side of the mounting frame (15) are provided with bosses, and clamping springs (14) are arranged between the bosses and the inner sides of the mounting frame (15).

5. The method for intelligent processing of nutritious rice according to claim 4, wherein, The front part of the adjusting frame (51) is provided with a resistance plate sliding groove (511) in sliding contact with the resistance plate (6), the resistance plate sliding groove (511) is provided with resistance block accommodating grooves (512) on both sides, the resistance block accommodating grooves (512) are in sliding contact with resistance blocks (7), the rear end of the resistance plate sliding groove (511) is provided with a communication transmission cavity (515), the rear surface of the resistance plate (6) is in contact with the transmission block (8) at the transmission cavity (515), the rear end of the transmission cavity (515) is provided with a communication transmission block sliding groove (513) and a clamping wedge accommodating groove (514), The transmission block sliding groove (513) and the clamping wedge accommodating groove (514) are respectively in sliding contact with the transmission block (8) and the clamping wedge (9); the bottom of the adjusting frame (51) is provided with connecting plates (52), and the connecting plates (52) are provided with bolt connection holes and pin holes (4).

6. The method for intelligent processing of nutritious rice according to claim 5, wherein, The top end of the adjusting frame (51) is fixedly connected with and positioned by the positioning plate (28), the positioning plate (28) is fixedly connected with and positioned by the feeding port rack (17), and the connecting plates (52) are fixedly connected with and positioned by the lower end of the rice mill lower rack (29).

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