Anti-oxidation whole-grain germ-remaining rice machine

Abstract

The invention relates to the technical field of grain and whole grain processing machinery, in particular to an antioxidant whole grain germ-remaining rice machine which comprises a box body and a feeding hopper arranged on the upper portion of the box body, low-temperature nitrogen or low-temperature clean air is supplied through an air inlet pipe, meanwhile, high-pressure pulse atomization nutrient solution gel is supplied through an atomization pipe, and a pure natural plant edible protective film is formed. Oxidation rancidity reaction between the cereal germs and the outside is isolated, and the problem of nutrition imbalance of the amino acid proportion and the like of the cereals such as rice or wheat is solved through a liposome embedding technology. Grain is lifted upwards in a tornado state, non-rigid bran grinding and removing are achieved and germs are protected to be in a complete state in cooperation with the effect of the surface linear velocity difference of a conical emery roll, and spraying heads arranged in interval areas of a convex rib spiral structure can enable a continuously-supplied nutrient solution to form high-pressure aerial fog in a rice milling bin along with a beveling turbine structure of a fine polishing roll, so that the high-pressure aerial fog is sprayed to the rice milling bin. And fully mixing and polishing with the husked grains with embryos, so as to achieve the dual purposes of cleaning, washing-free, oxidation-resistant and fresh-keeping.

Description

Technical Field

[0001] This invention relates to the field of grain and whole grain processing machinery technology, and in particular to an antioxidant whole grain germ-preserving rice machine. Background Technology

[0002] Germ-retained rice, known as the "aristocrat of rice" or "rice gold," is processed by rice milling machines to remove the husk and most of the bran layer, retaining 80% of the germ, the nutritional component of the rice grain. Germ-retained rice requires both a high germ retention rate and the precision and taste of ordinary rice. Current germ-retaining rice machines mainly use single-machine circulation and multi-machine continuous processes, resulting in bottleneck problems such as more broken rice, high energy consumption, low yield, and easy spoilage. These problems seriously hinder the sustainable development of the grain industry and must be addressed at their root.

[0003] For example, Chinese patent application number CN202211217516.2 discloses a rice milling mechanism that retains the rice germ layer. It includes a box body, feeding hoppers fixed to both sides of the top of the box body, and a drive motor fixed to the top of the box body. Feed plates are fixedly connected to both sides of the inner wall of the box body. This device, through a two-stage lightweight hulling process, not only extends the rice hulling time and improves the hulling effect, but is also lighter and less stressful than the traditional roller extrusion method, better protecting the grain germ and increasing the retention rate of the grain germ and aleurone layer. However, in actual processing, directly and rigidly removing the bran from the grain will result in a large amount of breakage. Furthermore, as the rice milling rollers rotate, turbulence occurs between the milling plates, causing the germ end of the grain to be subjected to unpredictable impact forces, making it difficult for the germ to remain intact. Simultaneously, for germ rice, if it is not promptly and completely polished with nutrient solution after hulling, it is highly susceptible to oxidative rancidity, affecting its nutritional quality. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose an antioxidant whole grain germ-retaining rice machine to solve the problems of nutrient waste, energy waste and repeated investment caused by single-machine multi-stage and multi-machine continuous processes in the existing whole grain rice making process, as well as the technical problem of rapid oxidation and rancidity of grain and aleurone layer germ after the bran is removed.

[0005] To achieve the above objectives, the present invention provides an antioxidant whole grain germ-retaining rice machine, comprising a housing and a feeding hopper disposed on the upper part of the housing, wherein the housing is provided with a bran-extraction channel, a blower is provided on the bran-extraction channel, and a feeding trough is also provided on the bran-extraction channel; the germ-retaining rice machine further includes:

[0006] An opening and closing mechanism for opening and closing the feed hopper;

[0007] A rice milling bin is fixedly installed inside the box. The cover of the rice milling bin has a discharge port, which is connected to the feed hopper. The bran extraction channel is located at the bottom of the rice milling bin.

[0008] A partitioned rice milling mechanism for anti-oxidative germ-preserving rice milling of grains, wherein the partitioned rice milling mechanism is installed inside the rice milling bin, and a pressure door is installed on the side of the partitioned rice milling mechanism;

[0009] A spray cleaning mechanism for humidifying and cleaning rice bran is installed inside the rice milling silo;

[0010] A conical sanding roller is installed in the rice milling bin via a servo electric cylinder that allows it to be raised and lowered.

[0011] Furthermore, the opening and closing mechanism includes:

[0012] A guide frame installed at the lower port of the feed hopper;

[0013] Servo electric cylinder two, which is installed on the side end of the guide frame;

[0014] A baffle plate is installed on the output end of the second servo electric cylinder. The baffle plate is also slidably disposed within the guide frame to open and close the lower port of the feed hopper.

[0015] Furthermore, the partitioned rice milling mechanism includes:

[0016] The upper fixing plate installed inside the rice milling bin;

[0017] There are two servo electric cylinders, which are respectively installed on both sides of the upper fixed plate;

[0018] A drive motor is installed at the bottom of the rice milling bin;

[0019] The main shaft is mounted on the output end of the drive motor. The center of the main shaft includes an upper cavity and a lower cavity. An air outlet 1 and an air outlet 2 are respectively opened in the upper cavity and lower cavity regions of the main shaft.

[0020] An air inlet pipe is installed on the side of the cover plate of the rice milling bin, and the air inlet end of the air inlet pipe is connected to the upper cavity.

[0021] The fan blades are dispersible and are installed on the upper part of the main shaft and positioned below the lower port of the feed hopper.

[0022] The lower end of the conical sanding roller is equipped with a spiral connecting cylinder. The two sides of the spiral connecting cylinder are respectively movably connected to the output ends of the two servo electric cylinders. The side surface of the conical sanding roller is provided with an air outlet three, which is connected to the air outlet one.

[0023] A fine polishing roller is coaxially mounted on the lower end of the spiral connecting cylinder, and the fine polishing roller is axially slidably placed on the main shaft. The outer surface of the fine polishing roller has a convex rib spiral structure.

[0024] A hexagonal rice sieve, or a circular rice sieve, is installed below the fine polishing roller, and the opening and closing end of the pressure gate is located on the side end of the hexagonal rice sieve;

[0025] An atomizing tube is installed at the lower part of the main shaft and communicates with the lower cavity. A spray head that communicates with the atomizing tube is spirally embedded on the polishing roller. The spray head is placed in the interval area of ​​the convex spiral structure.

[0026] Furthermore, low-temperature nitrogen gas is introduced into the air inlet pipe, and high-pressure atomized nutrient solution is introduced into the atomizing pipe.

[0027] Furthermore, the spray cleaning mechanism includes:

[0028] A lower fixing plate is installed inside the rice milling bin, and a second drive motor is installed on the lower fixing plate;

[0029] A drive gear is mounted on the output end of the second drive motor;

[0030] Driven gear ring, the driven gear ring is rotatably mounted on the lower fixed plate, and the driven gear ring meshes with the driving gear;

[0031] A plurality of brushes are provided and located in the lower outer region of the atomizing tube, and all of the brushes are mounted on the driven toothed ring.

[0032] Furthermore, the diameter ratio of the large and small ends of the conical sand roller is 4:3.

[0033] Furthermore, the hexagonal rice sieve and the convex spiral structure form a shear angle of 60-70 degrees.

[0034] Furthermore, a feeding turbine is also installed on the main shaft, which cooperates with the bran extraction channel.

[0035] The beneficial effects of this invention are as follows: The antioxidant whole grain germ-preserving rice machine of this invention supplies low-temperature nitrogen or low-temperature clean air through the upper air inlet pipe, while simultaneously supplying high-pressure atomized nutrient solution through the lower liquid inlet and atomizing pipe. The nutrient solution gel forms a pure natural, plant-based, edible protective film on the surface of the grain, isolating the grain germ from external oxidative rancidity. Simultaneously, liposome encapsulation technology compensates for the imbalance of amino acid ratios in grains such as rice or wheat. Driven by a drive motor, a servo cylinder drives a conical sanding roller to reciprocate and lift. The obliquely rotating airflow forms a vortex jet inside the rice milling bin, lifting the grain upwards like a tornado. Combined with the difference in linear velocity on the surface of the conical sand roller, it achieves non-rigid removal of the bran, fully protecting the germ end from stress and keeping the germ intact. The spray head, located in the interval area of ​​the spiral structure with raised ribs, along with the oblique turbine structure of the polishing roller, continuously supplies nutrient solution to form a high-pressure mist inside the rice milling bin. This mist fully blends and polishes the bran-removed germ-bearing grain, achieving the dual purpose of cleanliness without washing and anti-oxidation preservation. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a partial structural diagram of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the present invention;

[0039] Figure 3 This is a partial structural schematic diagram of the husk extraction channel in this invention;

[0040] Figure 4 This is a schematic diagram of the structure of the induced draft fan not shown in this invention;

[0041] Figure 5 This is a schematic diagram of the assembly of the opening and closing mechanism and the feeding hopper in this invention;

[0042] Figure 6 This is a schematic diagram of the assembly of the spray cleaning mechanism and the fine polishing roller in this invention;

[0043] Figure 7 This is a schematic diagram of the assembly of the spindle and some structures in this invention;

[0044] Figure 8 This is a schematic diagram of the internal structure of the partitioned rice milling mechanism in this invention;

[0045] Figure 9 This is a schematic diagram of the material feeding turbine of the present invention;

[0046] Figure 10 This is a schematic diagram of the conical sander roller in this invention;

[0047] Figure 11 This is a schematic diagram of vortex airflow suspension grinding in this invention.

[0048] The diagram is marked as follows:

[0049] 1. Housing; 2. Feed hopper; 3. Bran extraction channel; 4. Exhaust fan; 5. Feed chute; 6. Rice milling bin; 7. Feed outlet; 8. Conical sand roller; 9. Servo electric cylinder one; 10. Guide frame; 11. Servo electric cylinder two; 12. Baffle plate; 13. Upper fixed plate; 14. Drive motor one; 15. Main shaft; 16. Air outlet one; 17. Air outlet two; 18. Air inlet pipe; 19. Dispersing fan blade; 20. Pressure gate; 21. Spiral connecting cylinder; 22. Air outlet three; 23. Fine polishing roller; 24. Hexagonal rice sieve; 25. Atomizing tube; 26. Spray head; 27. Lower fixed plate; 28. Drive motor two; 29. ​​Drive gear; 30. Driven gear ring; 31. Brush; 32. Feeding turbine. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0051] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] Embodiments of the present invention propose an antioxidant whole grain germ-retaining rice machine, such as... Figure 1-8 As shown, the machine includes a housing 1 and a feeding hopper 2 located on the upper part of the housing 1. The housing 1 has a bran extraction channel 3 inside, a blower 4 is installed on the bran extraction channel 3, and a feeding trough 5 is also installed on the bran extraction channel 3. The characteristic feature is that the germ-retaining rice machine further includes:

[0053] An opening and closing mechanism for opening and closing the feed hopper 2;

[0054] The rice milling bin 6 is fixedly installed inside the box body 1. The cover plate of the rice milling bin 6 has a discharge port 7, which is connected to the feed hopper 2. The bran extraction channel 3 is located at the bottom of the rice milling bin 6.

[0055] A partitioned rice milling mechanism for anti-oxidative and germ-preserving rice milling of grains is installed inside the rice milling bin 6, and a pressure door 20 is installed on the side of the partitioned rice milling mechanism.

[0056] A spray cleaning mechanism for humidifying and cleaning rice bran is installed inside the rice milling bin 6;

[0057] The conical sanding roller 8 is installed in the rice milling bin 6 by means of a servo electric cylinder 9.

[0058] In this embodiment, the opening and closing mechanism includes:

[0059] Guide frame 10 installed at the lower port of feed hopper 2;

[0060] Servo electric cylinder 2 11 is installed on the side end of guide frame 10;

[0061] The baffle plate 12 is installed on the output end of the servo electric cylinder 11. The baffle plate 12 is also slidably disposed in the guide frame 10 for opening and closing the lower port of the feed hopper 2.

[0062] In this embodiment, the rice milling mechanism includes:

[0063] The upper fixing plate 13 is installed inside the rice milling bin 6;

[0064] There are two servo electric cylinders 9, which are respectively installed on both sides of the upper fixing plate 13;

[0065] Drive motor 14 is installed at the bottom of the rice milling bin 6;

[0066] Main shaft 15 is mounted on the output end of drive motor 14. The center of main shaft 15 includes an upper cavity and a lower cavity. Air outlet 16 and air outlet 17 are respectively opened in the upper cavity and lower cavity areas of main shaft 15.

[0067] Air inlet pipe 18 is installed on the side of the cover plate of rice milling bin 6. The rice husk removal section of air inlet pipe 18 is connected to the upper cavity.

[0068] Dispersing fan blade 19 is installed on the upper part of the main shaft 15 and placed below the lower port of the feed hopper 2.

[0069] The lower end of the conical sanding roller 8 is equipped with a spiral connecting cylinder 21. The two sides of the spiral connecting cylinder 21 are movably connected to the output ends of two servo electric cylinders 11 respectively. The side surface of the conical sanding roller 8 is provided with an air outlet 22, which is connected to the air outlet 16.

[0070] The fine polishing roller 23 is coaxially mounted on the lower end of the spiral connecting cylinder 21, and the fine polishing roller 23 is axially slidably placed on the main shaft 15. The outer surface of the fine polishing roller 23 has a convex rib spiral structure.

[0071] Hexagonal sieve 24 is installed below the polishing roller 23, and the opening and closing end of the pressure gate 20 is located on the side end of the hexagonal sieve 24.

[0072] The atomizing tube 25 is installed at the lower part of the main shaft 15 and is connected to the lower cavity. The fine polishing roller 23 is spirally embedded with a spray head 26 that is connected to the atomizing tube 25. The spray head 26 is placed in the interval area of ​​the convex spiral structure.

[0073] It should be noted that the surface of the conical sand roller 8 is sand grain or diamond texture, and the surface linear velocity ratio between the bottom and top is between 1:2.3 and 1:2.5 to achieve the best effect of retaining the embryo and grinding.

[0074] In this embodiment, as Figure 1 , Figure 2 , Figure 7 , Figure 8 As shown, during use, the baffle plate 12 is slid by the servo electric cylinder 2 11 to open the feed hopper 2. Through the external automatic feeding device, the grain to be milled and the bran removed is placed into the germ rice milling machine through the feed hopper 2. The grain enters the rice milling chamber 6 through the discharge port 7. Low temperature nitrogen or low temperature clean air is supplied by the air inlet pipe 18. The airflow is rushed out through the air outlet 16 in the upper cavity of the main shaft 15. At the same time, high pressure atomized nutrient solution is supplied by the atomizing pipe 25.

[0075] Driven by the drive motor 14, the main shaft 15 drives the dispersing fan blade 19, the conical sand roller 8, the spiral connecting cylinder 21 and the fine polishing roller 23 to rotate synchronously. The grains dispersed by the dispersing fan blade 19 fall vertically or slide down under their own weight. This process is a continuous natural gravity feeding process, which achieves the purpose of single-machine rice production, reducing investment, reducing damage and reducing pollution.

[0076] The conical sand roller 8 is driven by a servo electric cylinder 9 to perform reciprocating lifting and lowering motion, which in turn drives the fine polishing roller 23 to lift and lower synchronously. When the main shaft 15 is rotating, the inner channel of the main shaft 15 adopts a dual-function integrated method, that is, low-temperature nitrogen gas enters from the top and nutrient solution mechanism enters from the bottom. The airflow that is obliquely rotated from the air outlet 16 will form a vortex jet in the rice milling bin 6, which lifts the grain upward in a tornado state. With the help of the surface linear velocity difference of the conical sand roller 8, the bran is removed in a non-rigid manner, which fully protects the germ end from stress and keeps the germ in an intact state. The falling speed of the grain and the whitening accuracy are controlled by controlling the airflow intensity.

[0077] The spray head 26, located in the interval area of ​​the spiral structure with convex ribs, will be evenly distributed at 120 degrees through the straight dotted spray nozzles along with the oblique turbine structure of the polishing roller 23. This will form a high-pressure pulse mist of water vapor mixture in the rice milling bin 6, which will be used to fully mix and polish the germ grains after the bran has been removed. This achieves the dual purpose of cleanliness without washing and anti-oxidation preservation. Finally, the pressure gate 20 is opened to allow the grains to be discharged through the feeding trough 5, while the detached bran is discharged through the bran extraction channel 3 under the suction of the blower 4.

[0078] In this embodiment, as Figure 1 , Figure 6 As shown, the spray cleaning mechanism includes:

[0079] The lower fixing plate 27 is installed inside the rice milling bin 6, and the second drive motor 28 is installed on the lower fixing plate 27.

[0080] The drive gear 29 is mounted on the output end of the drive motor 28.

[0081] Driven gear ring 30 is rotatably mounted on the lower fixed plate 27 and meshes with the driving gear 29;

[0082] There are several brushes 31 and they are placed in the lower outer area of ​​the atomizing tube 25. All of the brushes 31 are mounted on the driven toothed ring 30.

[0083] The output of the drive motor 28 drives the drive gear 29 to rotate, which in turn drives several brushes 31 to rotate continuously via the driven gear ring 30. In the spray area of ​​the rice milling bin 6, the detached bran is moistened, and the brushes 31 can brush off the bran accumulated on the surface of the polishing roller 23, further ensuring the cleaning effect and preventing the disorderly flying bran from scratching the surface of the grain, thus ensuring the surface quality of the grain and its germ.

[0084] In this embodiment, as Figure 8 , Figure 10 , Figure 11As shown, the diameter ratio of the large and small heads of the conical sand roller 8 is 4:3, the hexagonal rice sieve 24 and the convex spiral structure form a shear angle of 60-70 degrees, and the diameter ratio of the optimal linear velocity combination of the conical sand roller 8 and the spiral connecting cylinder 21 is 1:2.2 to 1:2.45. This allows the grains to be completely dehulled while ensuring that the germ retention rate meets the standards. Furthermore, a single machine can process different grains, such as oats, highland barley, millet, and quinoa.

[0085] In this embodiment, as Figure 1 , Figure 9 As shown, a feeding turbine 32 is also installed on the main shaft 15. The feeding turbine 32 cooperates with the bran extraction channel 3. Since the bran of the humidified grain is heavy and easy to clump together, the feeding turbine 32 can break up the clumps of bran in sections and push them into the bran extraction channel 3 to avoid blockage during the bran discharge stage. It is also suitable for grains such as oats that are soft and have a high oil content, and avoids the formation of cakes or clumps.

[0086] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0087] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An antioxidant whole grain germ rice harvester, comprising a housing (1) and a feeding hopper (2) located on the upper part of the housing (1), wherein the housing (1) is provided with a bran extraction channel (3), a blower (4) is provided on the bran extraction channel (3), and a feeding trough (5) is also provided on the bran extraction channel (3); characterized in that, The germ-retaining rice machine also includes: An opening and closing mechanism for opening and closing the feed hopper (2); Rice milling bin (6), the rice milling bin (6) is fixedly installed inside the box body (1), the cover plate of the rice milling bin (6) is provided with a discharge port (7), the discharge port (7) is connected to the feed hopper (2), and the bran extraction channel (3) is located at the lower part of the rice milling bin (6); A partitioned rice milling mechanism for anti-oxidative germ-preserving rice milling of grains, the partitioned rice milling mechanism is installed in the rice milling bin (6), and a pressure door (20) is installed on the side of the partitioned rice milling mechanism; A spray cleaning mechanism for humidifying and cleaning rice bran is installed inside the rice milling bin (6); A conical sanding roller (8) is installed in the rice milling bin (6) by means of a servo electric cylinder (9).

2. The antioxidant whole grain germ-retaining rice machine according to claim 1, characterized in that, The opening and closing mechanism includes: Guide frame (10) installed at the lower port of the feed hopper (2); Servo electric cylinder two (11), the servo electric cylinder two (11) is installed on the side end of the guide frame (10); A baffle plate (12) is installed on the output end of the servo electric cylinder (11). The baffle plate (12) is also slidably disposed in the guide frame (10) for opening and closing the lower port of the feed hopper (2).

3. The antioxidant whole grain germ-retaining rice machine according to claim 1 or 2, characterized in that, The partitioned rice milling mechanism includes: The upper fixing plate (13) is installed inside the rice milling bin (6); There are two servo electric cylinders (9), which are respectively installed on both sides of the upper fixing plate (13); Drive motor 1 (14) is installed at the bottom of the rice milling bin (6); Main shaft (15), the main shaft (15) is mounted on the output end of the drive motor (14), the center of the main shaft (15) includes an upper cavity and a lower cavity, and an air outlet (16) and an air outlet (17) are respectively opened on the main shaft (15) in the upper cavity and the lower cavity area; An air inlet pipe (18) is installed on the side of the cover plate of the rice milling bin (6), and the air inlet end of the air inlet pipe (18) is connected to the upper cavity. Dispersing fan blades (19) are installed on the upper part of the main shaft (15) and placed below the lower port of the feed hopper (2); The lower end of the conical sand roller (8) is equipped with a spiral connecting cylinder (21). The two sides of the spiral connecting cylinder (21) are movably connected to the output ends of the two servo electric cylinders (11). The side surface of the conical sand roller (8) is provided with an air outlet three (22) in a circumferential direction. The air outlet three (22) is connected to the air outlet one (16). A polishing roller (23) is coaxially mounted on the lower end of the spiral connecting cylinder (21), and the polishing roller (23) is axially slidably placed on the main shaft (15). The outer surface of the polishing roller (23) has a convex rib spiral structure. A hexagonal rice sieve (24) is installed below the fine polishing roller (23), and the opening and closing end of the pressure gate (20) is placed on the side end of the hexagonal rice sieve (24). Atomizing tube (25) is installed on the lower part of the main shaft (15) and connected to the lower cavity. A spray head (26) connected to the atomizing tube (25) is spirally embedded on the polishing roller (23). The spray head (26) is placed in the interval area of ​​the convex spiral structure.

4. The antioxidant whole grain germ-retaining rice machine according to claim 3, characterized in that, Low-temperature nitrogen gas is introduced into the air inlet pipe (18), and high-pressure atomized nutrient solution is introduced into the atomizing pipe (25).

5. The antioxidant whole grain germ-retaining rice machine according to claim 4, characterized in that, The spray cleaning mechanism includes: The lower fixing plate (27) installed inside the rice milling bin (6) is equipped with a second drive motor (28); A drive gear (29) is mounted on the output end of the second drive motor (28); Driven gear ring (30), which is rotatably mounted on the lower fixed plate (27), and meshes with the driving gear (29); A number of brushes (31) are placed in the lower outer region of the atomizing tube (25), and the brushes (31) are all mounted on the driven toothed ring (30).

6. The antioxidant whole grain germ-retaining rice machine according to claim 1, characterized in that, The diameter ratio of the large and small ends of the conical sander (8) is 4:

3.

7. The antioxidant whole grain germ-retaining rice machine according to claim 3, characterized in that, The hexagonal rice sieve (24) and the convex spiral structure form a shear angle of 60-70 degrees.

8. The antioxidant whole grain germ-retaining rice machine according to claim 3, characterized in that, The main shaft (15) is also equipped with a feeding turbine (32), which cooperates with the bran extraction channel (3).

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