A polishing method for super-long rice

Abstract

The application discloses a kind of super-long fragrant rice polishing processing method, belongs to super-long fragrant rice processing technical field, comprising the following steps: 1) rice is polished and pretreated, including drying, rice milling, shelling and broken rice separation;2) the rice after broken rice separation is handled using water mist polishing device, so that rice surface separates and uniformly contacts water mist, then polishing treatment is carried out;3) the polished rice is color selected and treated, and the grains are detected using sensors and light sources, and the grains with color not meeting the requirements are separated;4) the rice after color selection is subjected to secondary broken rice separation treatment, and the broken rice is separated from the whole grains;5) the rice after secondary broken rice separation is packaged and stored;The application effectively solves the problem of increased broken rice rate during the polishing process of the existing polishing equipment for long-grain fragrant rice.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of super-long aromatic rice processing, in particular to a super-long aromatic rice polishing processing method. BACKGROUND

[0002] Long-grain aromatic rice is a type of indica rice, with a glutinous taste and a unique aroma. Its characteristics are: the overall appearance of the rice grains should be long and thin; the average length of intact and undamaged whole rice grains is not less than 7 mm; the average width of intact and undamaged whole rice grains is not less than 3 mm; the aromatic rice is always distinct in grains, and compared with ordinary rice, they are longer, with an average length of 7.45 mm, which is 2-3 times that of ordinary rice; some aromatic rice grains are between 6.61 and 7.5 mm long, and the super-long ones are even more than 7.5 mm, reaching about 10.2 mm.

[0003] The current rice processing method is: paddy → preliminary cleaning → hulling → separation of husked rice and chaff → thickness separation → sand roller milling → iron roller milling → fine milling → white rice grading → color selection → polishing → finished rice → packaging. Poor control of dryness and humidity during processing results in a high broken rice rate of the processed rice. In addition, in the above rice processing process, the material must go through multiple mechanical friction procedures before becoming a finished product. In the existing rice polishing process, a double-polishing double-selection or triple-polishing triple-selection method is used for polishing treatment. In the polishing and friction process, the processed rice is usually pursued to be crystal clear, so as to have a good appearance, which reduces its nutritional value and makes the polished rice have a low germ retention rate. Due to the unique body shape characteristics of long-grain aromatic rice, the aspect ratio is large, causing its anisotropic characteristics. During the polishing process of long-grain aromatic rice, the super-long body shape causes the middle part of the rice grain to be in contact with the polishing roller for a long time, resulting in uneven polishing stress of the whole rice grain, which makes it prone to waist explosion during the processing process, increasing the broken rice rate. SUMMARY

[0004] The purpose of the present application is to overcome the problem that in the existing polishing equipment, the middle part of the rice grain is in contact with the polishing roller for a long time during the polishing process of long-grain aromatic rice, resulting in uneven polishing stress of the whole rice grain, which makes it prone to waist explosion during the processing process, increasing the broken rice rate. The present application provides a super-long aromatic rice polishing processing method with a low broken rice rate.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: a super-long aromatic rice polishing processing method, comprising the following steps:

[0006] 1) Pre-treatment of the rice before polishing, including drying, milling, shelling, and broken rice separation;

[0007] 2) After the broken rice separation, the rice is treated with a water mist polishing device to separate and uniformly contact the water mist on the surface of the rice, and then the polishing treatment is performed;

[0008] 3) The polished rice is subjected to color selection treatment, and the rice kernels are detected by using a sensor and a light source to separate out the rice kernels with color not meeting the requirements;

[0009] 4) The rice after color selection is subjected to secondary broken rice separation treatment to separate the broken rice from the whole rice kernels;

[0010] 5) The whole rice kernels after secondary broken rice separation are packaged and stored.

[0011] Further, in the step 2), before the rice is subjected to mist polishing, the rice is brought into contact with a high-voltage static electrode to make the rice charged and repel each other, so that the surface separation and uniform contact with the water mist are achieved; the high-voltage static voltage is 7-12kv.

[0012] Further, in the step 2), the water mist polishing device comprises a frame body, a feeding port, a water mist cavity, a polishing cavity and a discharging port, the feeding port is provided with a high-voltage static electrode, the high-voltage static electrode is connected with a high-voltage static generator through a wire, so that the surface of the rice is charged after the rice is brought into contact with the high-voltage static electrode in the feeding port.

[0013] Further, the lower end of the feeding port is connected with the water mist cavity, the left side of the water mist cavity is provided with a high-pressure water mist nozzle, the top wall of the water mist cavity is provided with a suction plate corresponding to the feeding port, a plurality of suction pipes are arranged on the suction plate at equal intervals, and the suction pipes are arranged at an inclination of 30-45°, so that the lower end of the suction pipe is arranged in a clockwise or counterclockwise circular manner, one end of the suction pipe penetrates through the suction plate and is arranged in the water mist cavity, the other end of the suction pipe penetrates through the frame body and is arranged outside the frame body, and the suction pipe is connected with an air suction fan.

[0014] Further, four suction pipes are arranged on the suction plate at equal intervals, and the circumference formed by the suction pipes has a diameter greater than that of the feeding port, so that the water mist is sucked through the lower end of the suction pipe to move in a circular manner, thereby increasing the contact between the water mist and the rice and making the surface of the rice separate and uniformly contact the water mist.

[0015] Further, a misting sieve plate is arranged between the water mist cavity and the polishing cavity, and the two ends of the misting sieve plate are grounded, so that the static electricity carried by the rice after misting treatment is eliminated, the repulsion between the rice kernels entering the polishing cavity is eliminated, and the rice kernels after misting treatment are polished by the polishing roller.

[0016] The super-long aromatic rice polishing processing method has the following beneficial effects:

[0017] The application is characterized in that before rice mist polishing, the rice is contacted with a high-voltage static electrode of 7-12kv to make the rice charged, so as to make the rice repel each other, and then the surface of the rice is separated and uniformly contacted with the water mist; the high-voltage static electrode is connected with a high-voltage static generator through a wire, so that the surface of the rice is charged after the rice is contacted with the high-voltage static electrode in the feeding inlet; then the rice is wetted by the way of mist spraying water; a plurality of suction pipes are arranged on the suction plate at equal intervals, so as to accelerate the circulation of the water mist in the water mist chamber; the water mist is sucked through the lower end of the suction pipe to form a vortex to make circular motion, so as to increase the contact between the water mist and the rice, and the rice with static electricity can be wetted under the action of the mist spraying water; because the rice is charged with high-voltage static electricity, the rice has repulsion between the rice, so as to form a gap, and the rice with high-voltage static electricity can quickly absorb water molecules, so as to separate the surface of the rice and uniformly contact the water mist, so as to weaken the binding force between the endosperm and the small amount of rice bran on the rice, and the polishing quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic diagram of the water mist polishing device of the long rice polishing processing method.

[0019] Figure 2 It is an internal schematic diagram of the water mist polishing device of the long rice polishing processing method.

[0020] Figure 3 It is a schematic diagram of the suction pipe of the long rice polishing processing method.

[0021] Figure 4 It is a schematic diagram of the bottom of the suction pipe of the long rice polishing processing method.

[0022] Figure 5 It is a bottom view of the suction plate of the long rice polishing processing method.

[0023] Figure 6 It is a schematic diagram of the polishing ball of the water mist polishing device of the long rice polishing processing method.

[0024] In the figure, 1 is a frame body, 2 is a feeding inlet, 3 is a water mist chamber, 4 is a misting sieve plate, 5 is a polishing chamber, 6 is a discharging outlet, and 10 is a polishing roller. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in combination with specific embodiments of the present application. The described embodiments are only some of the embodiments of the present application, rather than all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] Embodiment 1, as described above, the present application provides a polishing processing method of super-long aromatic rice, comprising the following steps: Figure 1-4

[0027] 1) polishing pretreatment of rice, including drying, rice milling, shelling and broken rice separation; that is, the paddy is sent into a drying device to control its moisture content ≤14.5% according to the standard of GB1354-2009, and then the paddy is sent into a rice mill to remove the husk for the first time, and then the broken rice is separated.

[0028] 2) the rice separated by the broken rice is treated by a water mist polishing device to separate and uniformly contact the water mist on the surface of the rice, and then the polishing treatment is performed; that is, before the rice mist polishing, the rice is charged by contacting a 7-12kv high-voltage static electrode to make the rice repel each other, thereby achieving the effect of surface separation and uniform contact with the water mist. The high-voltage static electrode in the feeding port is connected to a high-voltage static generator through a wire, so that the surface of the rice carries an electric charge after contacting the high-voltage static electrode in the feeding port, thereby making the rice carry high-voltage static electricity. Because the rice grains have electrodes, there is a repulsive effect between the rice grains during the falling process, thereby forming gaps, so that the subsequent rice grains can uniformly adsorb water molecules, so that the surface of the rice is quickly and uniformly contacted with water molecules.

[0029] 3) the polished rice is subjected to color selection treatment, and the rice grains are detected by using a sensor and a light source to separate out the rice grains with color not meeting the requirements.

[0030] 4) the rice after color selection is subjected to secondary broken rice separation treatment to separate the broken rice from the intact rice grains.

[0031] 5) the intact rice grains after secondary broken rice separation are packaged and stored in a warehouse.

[0032] ​This application uses the example of our company processing 100 tons of extra-long fragrant rice: After polishing the extra-long fragrant rice according to the polishing method described above, the applicant found that the broken rice rate was ≤0.8%. The commercially available CM6500s-5000s rice polisher achieves a broken rice rate of 1.0-1.2%. In summary, the broken rice rate of the extra-long fragrant rice polished according to the polishing method of this application was ≤0.8%. The applicant turned off the high-voltage electrostatic electrode and performed normal polishing, finding a broken rice rate of 1.1-1.4%. The applicant turned off the exhaust fan, stopped the suction pipe from extracting water mist, and performed normal polishing, finding a broken rice rate of 1.3-1.6%. Furthermore, during the processing, water mist entered the feed port and came into contact with the high-voltage electrostatic electrode, generating spark discharges. This effectively addresses the problem of existing polishing equipment prone to cracking and increased broken rice rates when polishing long-grain fragrant rice. Furthermore, the polishing technology of this application achieves a high rice germ retention rate.

[0033] Example 2, as Figure 1-2 The water mist polishing device used in this application on the basis of Example 1 includes a frame 1, an operation controller is provided on the outer wall of the frame 1, and a feed port 2, a water mist chamber 3, an atomizing screen plate 4, a polishing chamber 5 and a discharge port 6 are provided in the frame 1 from top to bottom. A high-voltage electrostatic electrode is provided in the feed port 2, and the high-voltage electrostatic electrode is connected to a high-voltage electrostatic generator through a wire, so that the surface of the rice carries an electric charge after contacting the high-voltage electrostatic electrode in the feed port. Because the rice grains carry electrodes, there is a repulsive effect between the rice grains during the falling process, thereby forming gaps between the rice grains, which facilitates the subsequent rice grains to evenly adsorb water molecules, so that the rice surface can quickly and evenly contact with the water molecules.

[0034] like Figure 2 As shown, the lower end of the feed port 2 is connected to the water mist chamber 3, and a high-pressure water mist nozzle is provided on the left side of the water mist chamber 3. The end of the high-pressure water mist nozzle is connected to a liquid collecting box, and a water pump is provided in the liquid collecting box, and a pressure gauge and a pressure regulating valve are installed on the water pump. The pressure gauge and the pressure regulating valve are connected to the operation controller, and the pressure regulating valve is adjusted by the operation controller to adjust the size of the nozzle spray pressure. A suction plate is provided on the top wall of the water mist chamber corresponding to the feed port, and 4 suction pipes are provided on the suction plate at equal intervals. One end of the suction pipe passes through the suction plate and is placed in the water mist chamber, and the other end of the suction pipe passes through the frame and is placed outside the frame. The suction pipe is connected to an exhaust fan, as shown Figure 3-5As shown, the suction pipe forms a larger diameter than the inlet diameter, and the suction pipe is arranged at an angle of 30-45°, so that the lower end of the suction pipe is arranged in a clockwise or counterclockwise direction, that is, the lower end of the suction pipe is arranged in a circular direction, so that the water mist sucked by the lower end of the suction pipe forms a vortex, and the water mist discharged from the nozzle makes a circular motion under the action of the suction force, thereby increasing the contact between the water mist and the rice, and the water mist at the top of the water mist chamber 3 is sucked by the arrangement of the suction pipe, so that the water mist at the top of the water mist chamber 3 is prevented from entering the inlet 2 and contacting the high-voltage static electrode to cause high-voltage discharge. The controller is used to set the suction force of the suction end to ensure the circulation rate of the water mist in the water mist chamber 3, so that the water mist can fully contact the water mist during free fall. The above arrangement improves the safety of the water mist polishing device, improves the wetting effect of the rice, and prevents the water in the water mist chamber 3 from entering the inlet 2 and contacting the high-voltage static electrode to cause a spark discharge accident.

[0035] In Example 3, before the rice mist polishing in the super-long aromatic rice polishing method, the rice needs to be brought into contact with a high-voltage static electrode of 7-12kv to be charged, so as to repel each other and achieve the effect of surface separation and uniform contact with the water mist. The high-voltage static treated rice enters the water mist chamber 3 of the water mist polishing device for water mist treatment, that is, the circulation of the water mist in the water mist chamber 3 enables the rice with static electricity to be wetted under the action of the atomized water. Since the rice has high-voltage static electricity, the rice grains have a repelling effect, thereby forming a gap, and the rice with high-voltage static electricity will quickly absorb water molecules, so that the rice surface and the water molecules are quickly and uniformly contacted, thereby weakening the bonding force between the endosperm and the small amount of rice bran remaining on the rice, which is beneficial to improve the subsequent polishing quality. The static electricity carried by the rice after the wetting treatment in the water mist chamber 3 will be weakened, thereby avoiding repulsion caused by the rice carrying the electrode in the subsequent polishing process, which affects the subsequent polishing quality.

[0036] In the test of the high-voltage static treatment of the rice before the rice mist polishing in the super-long aromatic rice polishing method, the high-voltage static generator and the water mist chamber 3 are started by operating the controller, so that the rice passes through the inlet 2 and the water mist chamber 3 in sequence. Two electrode plates are arranged in the inlet 2, the electrode plates are insulated from the device, the contact surface of the electrode plates with the rice carries an electrode, and the surface not in contact with the rice is insulated. The suction force of the suction end and the spray pressure of the nozzle are set by the controller to ensure the circulation rate of the water mist in the water mist chamber 3, so that the rice can fully contact the water mist during free fall.

[0037] The application takes the processing of 1 ton of super-long aromatic rice as an example. First, the surface separation of the rice (i.e. the grains are distinct and not clumped before entering the polishing chamber) and the effect of contact with water mist are tested as follows: when the high-voltage electrostatic electrode is 7-12kv, 30 samples of rice treated by the water mist chamber 3 are randomly selected for inspection. The test shows that the rice wetting rate is 95.6%. When the high-voltage electrostatic electrode is adjusted to 8.5-9.5kv, 30 samples of rice treated by the water mist chamber 3 are randomly selected for inspection. The test shows that the rice wetting rate is 97.5%. When the high-voltage electrostatic electrode is further adjusted to 8.9-9.2kv, 30 samples of rice treated by the water mist chamber 3 are randomly selected for inspection. The test shows that the rice wetting rate is 99.2%.

[0038] Then the applicant tests the subsequent polishing of broken rice based on the above high-voltage electrostatic electrode as follows: when the high-voltage electrostatic electrode is 7-12kv, the color of the rice polished subsequently is relatively uniform, and the broken rice rate is 0.7-0.8%. When the high-voltage electrostatic electrode is 8.5-9.5kv, the color of the rice polished subsequently is uniform, and the broken rice rate is 0.68-0.72%. When the high-voltage electrostatic electrode is 8.9-9.2kv, the color of the rice polished subsequently is uniform, and the broken rice rate is 0.57-0.65%. In summary, when the high-voltage electrostatic electrode is 8.9-9.2kv, the rice polished subsequently by the polishing chamber 5 has good grain quality and low broken rice rate.

[0039] As can be seen from the above, the test shows that the high-voltage electrostatic electrode provided in the water mist polishing device inlet 2 of the super-long aromatic rice makes the super-long aromatic rice adhere to the high-voltage electrostatic electrode. Since the rice grains have an electrode, there is a repulsive effect between the rice grains during the falling process, thereby forming gaps between the rice grains. Then the rice grains enter the water mist chamber 3, so that the rice grains can uniformly absorb water molecules, and the surface of the rice can quickly and uniformly contact with water molecules, thereby weakening the binding force of the endosperm and the small amount of rice bran remaining on the rice. At the same time, in the control test without the high-voltage electrostatic electrode, it is found that the high-voltage electrostatic electrode makes the surface of the rice grains contact with water molecules more quickly and uniformly. The rice treated by the water mist enters the polishing chamber 5 of the water mist polishing device through the atomizing screen plate 4, and is polished by the rotating polishing roller 10. A plurality of polishing balls are arranged on the polishing roller 10 at equal intervals and staggered, which ensures the polishing effect. The polishing balls on the opposite side correspond to the super-long aromatic rice and are provided with symmetrical embedded openings. The rotation of the polishing roller 10 enables the end of part of the rice grains to be placed in the embedded openings during polishing, thereby improving the retention rate of the germ during polishing. The polishing chamber 5 corresponding to the polishing roller 10 is provided with a cleaning brush. The cleaning brush and the rotating polishing roller 10 work together to clean the surface of the rice, thereby further improving the polishing effect of the rice.

[0040] As a preferred embodiment, the water mist cavity 3 is provided with an atomizing screen plate 4 between the polishing cavity 5, both ends of the atomizing screen plate 4 are grounded, so as to eliminate the static electricity carried by the rice after the atomizing treatment, and there is no repulsion between the rice entering the polishing cavity 5 through the first, second and third vibrating screens, and the rice after the water mist is polished by the polishing roller 10.

[0041] The first, second and third vibrating screens are provided between the atomizing screen plate 4 and the polishing cavity 5 at equal intervals, the lower ends of the first, second and third vibrating screens are provided with small vibrating motors, wherein the vibrating motor corresponding to the first vibrating screen works at 60-90HZ / min, the first vibrating screen plays a role of slowing down the rice wetted by the water mist cavity 3, increases the contact time of the water mist and the surface of the rice, so that the surface of the rice can be uniformly contacted and infiltrated by water molecules, thereby weakening the binding force of the endosperm and the small amount of rice bran remaining on the rice, which is beneficial to improve the subsequent polishing quality; the vibrating motor corresponding to the second vibrating screen works at 120-150HZ / min, the vibration of the second vibrating screen further weakens the binding force of the endosperm and the small amount of rice bran remaining on the rice, and the water infiltration effect on the surface of the rice is enhanced in the vibration process; the vibrating motor corresponding to the third vibrating screen works at 90-120HZ / min, the third vibrating screen plays a role of buffering the rice falling from the second vibrating screen, so that the rice can enter the polishing cavity 5 at a uniform speed in the shaking process, and the subsequent polishing quality is improved; the present application combines multiple vibrating screens to slow down the falling speed of the rice treated by the water mist cavity 3 into the polishing cavity 5, so that the rice can uniformly enter the polishing cavity 5 and contact the polishing roller 10, and the polishing is more uniform in the process of polishing by the rotation and rolling of the polishing roller 10, thereby avoiding the insufficient contact of the rice with the water mist due to the too fast falling speed of the rice, the poor infiltration effect, the no obvious weakening of the binding force of the endosperm and the small amount of rice bran remaining on the rice, the poor effect after polishing, the need for multiple polishing, and the increase of the broken rice rate with the increase of the polishing times, thereby reducing the economic value.

[0042] The first vibration screen, the second vibration screen and the third vibration screen are provided with small vibration motors according to the experiments of the applicant. When the vibration motor corresponding to the first vibration screen works at 70-80HZ / min, the vibration motor corresponding to the second vibration screen works at 130-140HZ / min, and the vibration motor corresponding to the third vibration screen works at 90-110HZ / min, the polished rice grains in the polishing cavity 5 are polished by the rolling polishing of the polishing roller 10, and the polished rice grains are uniform in color, low in broken rice rate, and the yellow rice grains are less than or equal to 0.1%. If the vibration motor corresponding to the first vibration screen works at 130-140HZ / min, the vibration motor corresponding to the second vibration screen works at 70-80HZ / min, and the vibration motor corresponding to the third vibration screen works at 90-110HZ / min, the polished rice grains in the polishing cavity 5 are polished by the rolling polishing of the polishing roller 10, and the polished rice grains are relatively glossy and slightly yellow, and the broken rice rate is low. If the vibration motor corresponding to the first vibration screen works at 90-110HZ / min, the vibration motor corresponding to the second vibration screen works at 130-140HZ / min, and the vibration motor corresponding to the third vibration screen works at 70-80HZ / min, the polished rice grains in the polishing cavity 5 are polished by the rolling polishing of the polishing roller 10, and the polished rice grains are relatively glossy and slightly yellow, and the broken rice rate is low. In summary, when the vibration motor corresponding to the first vibration screen works at 70-80HZ / min, the vibration motor corresponding to the second vibration screen works at 130-140HZ / min, and the vibration motor corresponding to the third vibration screen works at 90-110HZ / min, the polished rice grains in the polishing cavity 5 are polished by the rolling polishing of the polishing roller 10, and the polished rice grains are good in quality and low in broken rice rate.

[0043] The application works as follows: the super-long fragrant rice is quantitatively conveyed to the water mist polishing device of the application through the conveying belt, the operation controller is started to operate the components of the water mist polishing device, the rice grains fall from the end of the conveying belt into the feed inlet 2, and the high-voltage electrostatic electrode in the feed inlet 2 makes the rice grains adhere to the high-voltage electrostatic field, and the repulsion between the rice grains in the falling process makes the gaps between the rice grains, and then enters the water mist cavity 3, under the action of the high-pressure water mist nozzle and the suction pipe, the water mist in the water mist cavity 3 forms a cycle, so that the rice grains can uniformly absorb water molecules, and the surface of the rice can quickly and uniformly contact with the water molecules, so that the binding force between the endosperm and the small amount of rice bran on the rice is weakened, then the rice grains pass through the atomizing sieve plate 4 to remove the remaining electric charge carried by the rice grains, and then pass through the first, second and third vibration screens to slow down the falling speed of the rice grains, so that the rice grains can enter the polishing cavity 5 at a uniform speed, under the rotation and rolling polishing of the polishing roller 10, the rotation of the polishing roller 10 makes part of the rice grains in the polishing process can be placed in the embedded port, so as to further improve the retention rate of the germ of the rice in the polishing process under the premise of ensuring the polishing quality, and the polishing roller 10 rotates to polish the rice surface through the cleaning brush, so as to further improve the polishing effect of the rice; thereby effectively solving the problem that the middle part of the rice grain is in contact with the polishing roller 10 for a long time during the polishing process of the long-grain fragrant rice by the existing polishing equipment, which makes the polishing force of the whole rice grain uneven, and increases the broken rice rate in the processing process.

[0044] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

[0045] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A method for polishing super-long fragrant rice, characterized in that: The following steps are involved: 1) Pre-polishing the rice, including drying, milling, hulling and breaking; 2) The rice after the broken rice is separated is treated with a water mist polishing device. Before the rice is polished, the rice is exposed to a 7-12kV high-voltage electrostatic electrode to charge it, which promotes mutual repulsion between the rice, thereby achieving the effect of surface separation and uniform contact with the water mist, and then polishing is performed; the water mist polishing device includes a frame, a feed inlet, a water mist chamber, a polishing chamber and a feed outlet, the feed inlet is provided with the high-voltage electrostatic electrode; the top wall of the water mist chamber is provided with a suction plate corresponding to the feed inlet, and a plurality of suction pipes are evenly spaced on the suction plate, and the suction pipes are arranged in a 3-dimensional pattern. The tilt setting of 0-45° makes the nozzle at the lower end of the suction pipe present a clockwise or counterclockwise circumferential setting, the lower end of the feed port is connected to the water mist chamber, a high-pressure water mist nozzle is provided on the left side of the water mist chamber, one end of the suction pipe passes through the suction plate and is placed in the water mist chamber, and the other end of the suction pipe passes through the frame and is placed outside the frame, the suction pipe is connected to an exhaust fan, and the water mist is sucked through the nozzle at the lower end of the suction pipe to perform a circular motion; an atomizing screen plate is provided between the water mist chamber and the polishing chamber, and both ends of the atomizing screen plate are grounded, thereby eliminating the static electricity carried by the rice after the atomization treatment; 3) The polished rice is subjected to color sorting, where sensors and light sources are used to detect the rice grains and separate out rice grains that do not meet the color requirements; 4) The color-sorted rice is subjected to a secondary broken rice separation process to separate the broken rice from the whole rice kernels; 5) The whole rice grains after secondary broken rice separation are packaged and stored.

2. The super-long fragrant rice polishing method according to claim 1, wherein: Four suction pipes are evenly spaced on the suction plate. The diameter of a circle formed by the suction pipes is larger than the diameter of the feed port. Water mist is sucked through the pipe openings at the lower ends of the suction pipes to make a circular motion, thereby increasing its contact with the rice, so that the rice surface is separated and evenly contacts the water mist.

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