Continuous Grading, Baking, and Peeling Production System for Hulled Grains

Abstract

This application discloses a continuous grading, baking, and peeling production system for hulled grains. The system includes a grading and screening machine, a baking machine, a cooling machine, and a peeling machine. The grading and screening machine includes multiple screens with different aperture sizes, spaced vertically. The aperture size decreases from top to bottom along the vertical direction. The machine has multiple grading discharge ends corresponding to different screen sizes. The grading and screening machine is used to grade and screen hulled grains into various particle size specifications through the screens of different aperture sizes. Each grading discharge end is independently and sequentially connected to the baking machine, cooling machine, and peeling machine. The baking machine bakes the hulled grains, the cooling machine cools the hulled grains, and the peeling machine cracks and removes the husks from the hulled grains. This application enables integrated production of continuous grading, baking, cooling, and peeling of hulled grains.

Description

Technical Field

[0001] This application relates to the field of food processing technology, and in particular to a continuous grading, roasting, and dehulling production system for hulled grains. Background Technology

[0002] Soybeans have high nutritional value, containing high-quality plant protein, soy isoflavones, and are rich in various vitamins and minerals. They are widely used in the food industry for fermented soy products, soy milk, and edible oils. The soybean skin has low edible value and affects the quality of soy products. Soybean skin is mainly composed of cellulose and has a very low protein content. It also contains some saponins and pigments, which are one source of astringency. Therefore, dehulling soybeans helps to further improve the pure flavor of the products.

[0003] Raw soybeans have a tightly bound outer skin and cotyledons (kernels), making direct peeling difficult and resulting in a high breakage rate. Traditional techniques typically involve moderate roasting to make the skin brittle and shrink, creating gaps between the skin and kernel, greatly reducing the difficulty and increasing peeling efficiency. Raw soybeans contain abundant lipoxygenase. When soybeans are broken, this enzyme reacts rapidly with oxygen in the air, producing aldehydes and ketones that give soybeans their characteristic "beany" odor. Roasting effectively and permanently deactivates (deactivates) lipoxygenase, eliminating or significantly reducing the beany odor in soy products and improving flavor. Gentle roasting triggers the Maillard reaction, imparting a mild, pleasant nutty aroma to soybeans, resulting in a richer and more full-bodied flavor in the final product.

[0004] Traditional soybean peeling production lines roast soybeans of varying sizes together, resulting in uneven roasting and inconsistent quality. Furthermore, during peeling, the fixed roller spacing means that while large-diameter soybeans are effectively peeled when the roller spacing matches their size, smaller soybeans remain intact due to insufficient compression and friction. Conversely, large-diameter soybeans are peeled due to excessive compression and friction, leading to high breakage rates. Peeling soybeans without cooling them further contributes to high breakage rates, and the high temperature also hinders storage and accelerates oil oxidation. The purpose of this application is to provide a highly automated production line capable of precisely grading, roasting, and peeling soybeans. Through refined pretreatment, this line maximizes the quality, yield, flavor, and economic benefits of the final soybean product. Utility Model Content

[0005] Therefore, it is necessary to provide a continuous grading, roasting and dehulling production system for hulled grains that can integrate continuous grading, roasting, cooling and dehulling of soybeans.

[0006] One embodiment of this application provides a continuous grading, roasting, and peeling production system for hulled grains.

[0007] A continuous grading, roasting, and peeling production system for hulled grains includes a grading and screening machine, a roasting machine, a cooling machine, and a peeling machine. The grading and screening machine includes multiple screens with different apertures, which are spaced apart vertically. The apertures of the screens decrease sequentially from top to bottom along the vertical direction. The grading and screening machine is equipped with multiple grading discharge ends corresponding to different screens. The grading and screening machine is used to grade and screen hulled grains into various particle size specifications through the screens with different apertures. Each grading discharge end is independently and sequentially connected to the roasting machine, the cooling machine, and the peeling machine. The roasting machine is used to roast the hulled grains, the cooling machine is used to cool the hulled grains, and the peeling machine is used to crack and peel the hulled grains.

[0008] In some embodiments, the screen is detachably connected to the grading and screening machine.

[0009] In some embodiments, the baking machine has a baking chamber.

[0010] In some embodiments, the baking machine employs one or more of electric heating, natural gas heating, and steam heating.

[0011] In some embodiments, the baking temperature of the oven is adjustable.

[0012] In some embodiments, the baking time of the oven is adjustable.

[0013] In some embodiments, the cooler has a cooling chamber.

[0014] In some embodiments, the cooling chamber is connected to a blower.

[0015] In some embodiments, the blower is frequency-controlled.

[0016] In some embodiments, the top of the cooler is provided with an air outlet communicating with the cooling chamber.

[0017] In some embodiments, the peeling machine has a first roller and a second roller that are rotatable in opposite directions; the first roller and the second roller can rotate in opposite directions under the action of an external driving force to crack and peel the husks of the grain.

[0018] In some embodiments, the distance between the first roller and the second roller is adjustable.

[0019] In some embodiments, the continuous grading, baking, and peeling production system for hulled grains further includes a first vertical elevator, which works in conjunction with the grading and screening machine to lift the hulled grains into the grading and screening machine.

[0020] In some embodiments, the continuous grading, baking, and peeling production system for hulled grains further includes a second vertical elevator connected between the grading discharge end and the corresponding baking machine. The second vertical elevator is used to lift the graded hulled grains into the corresponding baking machine.

[0021] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a third vertical elevator connected between the roaster and the corresponding cooler, the third vertical elevator being used to lift the roasted hulled grains into the corresponding cooler.

[0022] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a fourth vertical elevator connected between the cooler and the corresponding peeling machine, the fourth vertical elevator being used to lift the cooled hulled grains into the corresponding peeling machine.

[0023] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a first collection mechanism, with each of the peeling machines connected to the first collection mechanism, which is used to collect bean hull dust generated by the peeling machines.

[0024] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a fifth vertical elevator connected between the peeling machine and the corresponding first collection mechanism. The fifth vertical elevator is used to lift the bean hull dust into the corresponding first collection mechanism.

[0025] In some embodiments, the first collection mechanism includes one or both of a collection box and a collection bag.

[0026] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a second collection mechanism, with each of the peeling machines connected to the second collection mechanism, which is used to collect the beans produced by the peeling machines.

[0027] In some embodiments, the continuous grading, roasting, and peeling production system for hulled grains further includes a receiving pipe, through which the second collecting mechanism is connected to the peeling machine.

[0028] The aforementioned continuous grading, roasting, and peeling system for whole-hulled grains integrates continuous grading, roasting, cooling, and peeling. It solves problems in traditional technologies such as low peeling rates due to differences in particle size and insufficient cooling, high bean breakage rates, and low automation during the whole-hulled grain peeling process. Continuous integrated production significantly reduces labor costs and improves whole-hulled grain peeling efficiency. This highly automated system enables precise grading, roasting, and peeling of whole-hulled grains. Through meticulous pre-processing, it maximizes the quality, yield, flavor, and economic benefits of the final bean products.

[0029] In the continuous grading, roasting, and peeling production system for whole grains disclosed in this application, the whole grains are first graded and screened. Based on the particle size, the whole grains are graded into different particle sizes and then roasted separately. After grading, the optimal roasting temperature and time can be adjusted for different particle sizes, ensuring that each grain reaches the ideal roasting degree. The grading results in a relatively uniform particle size. When the roasted and cooled whole grains rub and impact in the peeling machine, the force is more even, making it easier to control the peeling rate and breakage rate. After roasting, the beans are soft, hot, and resilient. After cooling, the beans become hard. Cooling the whole grains after roasting facilitates the separation of the bean skin from the bean, improving the peeling rate and reducing bean breakage. At the same time, rapid cooling after roasting effectively prevents oil oxidation. Therefore, the grading, roasting, and peeling production line of this application can integrate grading, roasting, cooling, and peeling of whole grains, with a high degree of automation, suitable for assembly line production, high output, and low manual labor intensity.

[0030] This application describes a grading process for hulled grains that enables uniform roasting and dehulling, preventing the uneven roasting of grains of varying sizes under the same conditions, where smaller grains burn easily while larger grains remain uncooked. Grading allows for adjustment of the optimal roasting temperature and time for grains of different sizes, ensuring each grain reaches the ideal roasting level. This also results in more even force distribution during friction and impact in the dehulling machine, making it easier to control the dehulling and breakage rates. Grading leads to a higher dehulling rate and better overall results. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0033] Figure 1 This is a schematic diagram of a continuous grading, baking, and peeling production system for hulled grains according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures

[0035] 10. Continuous grading, roasting, and peeling production system for hulled grains; 100. Grading and screening machine; 200. Roasting machine; 300. Cooler; 400. Peeling machine; 510. First vertical elevator; 520. Second vertical elevator; 530. Third vertical elevator; 540. Fourth vertical elevator; 550. Fifth vertical elevator; 600. First collecting mechanism; 700. Material receiving pipe; 800. Blower. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "on" or "below" a second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium.

[0038] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] This application provides a continuous grading, roasting, and peeling production system for hulled grains to solve at least one of the following technical problems in conventional soybean production lines: (1) Conventional technology roasts soybeans of different sizes together, resulting in uneven roasting and differences in soybean quality; (2) During the peeling process, since the roller spacing is fixed, when the roller spacing matches the large-diameter soybeans, the large-diameter soybeans can achieve the peeling effect, but the small-diameter soybeans cannot be effectively squeezed and rubbed when passing through the peeling machine, and the small-diameter soybeans after peeling are still intact particles; when the roller spacing matches the small-diameter soybeans, the small-diameter soybeans can achieve the peeling effect, but the large-diameter soybeans have a high rate of bean breakage due to excessive squeezing and friction in the peeling machine; (3) Peeling soybeans directly without cooling will result in a high rate of bean breakage, and the high temperature of the bean kernels is not conducive to storage and accelerates oil oxidation. The continuous grading, roasting, and peeling production system for hulled grains will be described below with reference to the accompanying drawings.

[0041] This application provides an embodiment of a continuous grading, roasting, and dehulling production system for hulled grains. For an example, please refer to [link to relevant documentation]. Figure 1 As shown, Figure 1 This is a schematic diagram of a continuous grading, roasting, and dehulling production system for hulled grains provided in one embodiment of this application. The continuous grading, roasting, and dehulling production system for hulled grains of this application can be used for highly efficient dehulling of hulled grains such as soybeans. The hulled grains in this application include, but are not limited to, soybeans, mung beans, red beans, cowpeas, peas, oats, barley, rice, buckwheat, and sorghum.

[0042] To more clearly illustrate the structure of the continuous grading, roasting, and dehulling production system for hulled grains, the following description, in conjunction with the accompanying drawings, will be provided. For an example, please refer to... Figure 1 As shown, one embodiment of this application provides a continuous grading, baking, and peeling production system for hulled grains.

[0043] A continuous grading, roasting, and peeling production system 10 for hulled grains includes a grading and screening machine 100, a roasting machine 200, a cooling machine 300, and a peeling machine 400. The grading and screening machine 100 includes multiple screens with different aperture sizes, spaced vertically, with the aperture size decreasing from top to bottom. The grading and screening machine 100 has multiple grading discharge ends corresponding to different screens. The grading and screening machine 100 is used to grade and screen hulled grains into various particle size specifications through the screens with different aperture sizes. Each grading discharge end is independently and sequentially connected to the roasting machine 200, the cooling machine 300, and the peeling machine 400. The roasting machine 200 is used to roast the hulled grains. The cooling machine 300 is used to cool the hulled grains. The peeling machine 400 is used to crack and peel the hulled grains.

[0044] The aforementioned continuous grading, roasting, and peeling production system 10 for hulled grains integrates continuous grading, roasting, cooling, and peeling, solving problems such as low peeling rates, high bean breakage rates, and low automation in traditional technologies due to differences in particle size and lack of cooling during the peeling process. Continuous integrated production significantly reduces labor costs and improves the efficiency of hulled grain peeling. This system 10 boasts a high degree of automation, enabling precise grading, roasting, and peeling of hulled grains. Through refined pretreatment, it maximizes the quality, yield, flavor, and economic benefits of the final bean products. Grading hulled grains ensures uniform roasting and peeling, preventing the phenomenon where smaller grains burn easily while larger grains remain undercooked under the same roasting conditions. After grading, the optimal roasting temperature and time can be adjusted for different grain sizes, ensuring that each grain reaches the ideal roasting level. This makes the uniformly sized hulled grains more evenly stressed when they rub and impact in the 400 dehulling machine, making it easier to control the dehulling rate and breakage rate. The graded hulled grains have a high dehulling rate and better results.

[0045] In some embodiments, the number of screens can be set according to actual needs. For example, the number of screens can be set according to the specifications to be graded. Correspondingly, the aperture of different screens can be set according to the grading requirements. In this application, each grading discharge end of the grading and screening machine 100 is connected to a corresponding set of baking machine 200, cooling machine 300 and peeling machine 400. The grading discharge end and screens can be added based on a comprehensive consideration of output, cost input, production continuity and equipment service life. Correspondingly, the number of baking machine 200, cooling machine 300 and peeling machine 400 can be increased according to the number of grading discharge ends. In actual production, this application can realize that after grading, the grains immediately enter the baking, cooling and peeling processes. Grains with different particle sizes after grading can be baked, cooled and peeled at the same time, which greatly improves production efficiency. It eliminates the need for the traditional method of storing the graded grains with husks before baking, cooling and peeling, achieving continuous production. The baking time and peeling parameters of grains with husks of different sizes are basically the same, eliminating the need for high-frequency adjustment of equipment parameters, thus improving production efficiency and equipment service life.

[0046] In this application, the grading and screening machine 100 can separate hulled grains of various sizes according to the actual particle size specifications of the hulled grains. This can be achieved by increasing or decreasing the number of screens and the corresponding aperture. The screen aperture is adjusted according to the actual production needs. Accordingly, in order to enable continuous production, for each additional screen, the connected baking machine 200, cooling machine 300 and peeling machine 400 are equipped with an additional set.

[0047] In some embodiments, the screen is detachably connected to the grading and screening machine 100.

[0048] In some embodiments, the grading and screening machine 100 is provided with a vibrating component connected to each screen to drive the screen to vibrate, so that the screen forms a vibrating screen or a rotary screen to achieve sorting.

[0049] In some embodiments, the baking machine 200 has a baking chamber.

[0050] In some embodiments, the baking machine 200 employs one or more of electric heating, natural gas heating, and steam heating.

[0051] In some embodiments, the baking temperature of the baking machine 200 is adjustable. The baking temperature of the baking machine 200 can be set according to the actual object being processed.

[0052] In some embodiments, the baking time of the baker 200 is adjustable. The baker 200 can be freely set in terms of temperature and duration to meet the baking needs of hulled grains of different sizes.

[0053] In some embodiments, the cooler 300 has a cooling chamber.

[0054] In some embodiments, the cooling chamber is connected to a blower 800. See also Figure 1 As shown, a blower 800 is connected to the bottom of the cooling chamber. An exhaust port is provided at the top of the cooling chamber.

[0055] In some of these implementations, the blower 800 is frequency-controlled.

[0056] In some embodiments, the top of the cooler 300 is provided with an air outlet that communicates with the cooling chamber.

[0057] In this application, the cooler 300 is equipped with a high-power variable frequency blower 800, which can accelerate the cooling of hulled grains. At the same time, the cooler 300 is equipped with an air outlet 7 at the top, which can accelerate the dissipation of heat inside the cooling chamber. By changing the frequency and the discharge speed, the cooler 300 can meet the cooling requirements of hulled grains of different particle sizes to the target temperature.

[0058] In some embodiments, the peeling machine 400 has a first roller and a second roller arranged opposite to each other, which can rotate in opposite directions; the first roller and the second roller can rotate in opposite directions under the action of an external driving force to crack and peel the husks of the grains. The first roller and the second roller are not shown in the accompanying drawings.

[0059] In some embodiments, the gap between the first roller and the second roller is adjustable.

[0060] In this application, the peeling machine 400 peels the husks of grains, separating the kernels from the husk dust. The peeling machine 400 can adjust the roller spacing of the first and second rollers according to different particle sizes of husk grains, thereby reducing kernel breakage while peeling.

[0061] In some embodiments, the continuous grading, roasting and peeling production system 10 for hulled grains further includes a first vertical elevator 510, which is used in conjunction with the grading and screening machine 100 to lift the hulled grains into the grading and screening machine 100.

[0062] In some embodiments, the continuous grading, baking and peeling production system 10 for hulled grains further includes a second vertical elevator 520, which is connected between the grading discharge end and the corresponding baking machine 200. The second vertical elevator 520 is used to lift the graded hulled grains into the corresponding baking machine 200.

[0063] In some embodiments, the continuous grading, roasting, and peeling production system 10 for hulled grains further includes a third vertical elevator 530 connected between the roaster 200 and the corresponding cooler 300. The third vertical elevator 530 is used to lift the roasted hulled grains into the corresponding cooler 300.

[0064] In some embodiments, the continuous grading, roasting, and peeling production system 10 for hulled grains further includes a fourth vertical elevator 540 connected between the cooler 300 and the corresponding peeling machine 400. The fourth vertical elevator 540 is used to lift the cooled hulled grains into the corresponding peeling machine 400.

[0065] In this application, the grading and screening machine 100, the baking machine 200, the cooling machine 300, and the peeling machine 400 discharge the processed hulled grains from their respective outlets after processing. The outlets of the grading and screening machine 100, the baking machine 200, the cooling machine 300, and the peeling machine 400 are each connected to a corresponding vertical elevator, which lifts the processed hulled grains from each device to the top of the next device.

[0066] In some embodiments, the continuous grading, roasting and peeling production system 10 for hulled grains further includes a first collection mechanism 600, with each peeling machine 400 connected to the first collection mechanism 600, which is used to collect bean hull dust generated by the peeling machine 400.

[0067] In some embodiments, the peeling machine 400 is connected to a blower 800, which separates the bean kernels from the lighter bean husk dust. The lighter bean husk dust enters a connected first collection mechanism 600 through a pipe, while the bean kernels are collected by the peeling machine 400 through a collection pipe 700. See also Figure 1 As shown, a blower 800 is connected to the bottom of the peeling machine 400. An exhaust port is provided on the top of the peeling machine 400.

[0068] In some embodiments, the continuous grading, roasting and peeling production system 10 for hulled grains further includes a fifth vertical elevator 550, which is connected between the peeling machine 400 and the corresponding first collection mechanism 600. The fifth vertical elevator 550 is used to lift the bean hull dust into the corresponding first collection mechanism 600.

[0069] In some embodiments, the first collection mechanism 600 includes one or both of a collection box and a collection bag.

[0070] In some embodiments, the continuous grading, roasting and peeling production system 10 for hulled grains further includes a second collection mechanism, with each peeling machine 400 connected to the second collection mechanism, which is used to collect the beans produced by the peeling machine 400.

[0071] In some embodiments, the continuous grading, roasting and peeling production system 10 for hulled grains also includes a receiving pipe 700, through which the second collecting mechanism is connected to the peeling machine 400.

[0072] In some embodiments, the first vertical elevator 510, the second vertical elevator 520, the third vertical elevator 530, the fourth vertical elevator 540, and the fifth vertical elevator 550 are each independently selected from bucket elevators. Bucket elevators are the most classic equipment for vertically lifting granular and small lump materials. The working principle of a bucket elevator includes: a series of buckets are evenly fixed on a traction belt or chain, and a drive unit drives the traction components to rotate cyclically within a closed casing. Material is fed into the buckets from the bottom, lifted to the top, and then ejected from the discharge port under centrifugal force or gravity. The core components of a bucket elevator include: buckets, traction belt / chain, head wheel and bottom wheel, drive unit, and casing. Bucket elevators offer high lifting height, stable conveying, small footprint, and good sealing (reducing dust). Bucket elevators can rely on gravity for unloading, and their operating speed can be set to low speed to suit granular, high-density hulled grains.

[0073] In summary, the continuous grading, roasting, and peeling production system 10 for whole grains of this application first grading and screening the whole grains. Based on the particle size, the whole grains are graded into different particle sizes for roasting. After grading, the optimal roasting temperature and time can be adjusted for different particle sizes, ensuring that each grain reaches the ideal roasting degree. The graded whole grains are generally uniform in size. When the roasted and cooled whole grains rub and impact with the peeling machine 400, the force is more even, making it easier to control the peeling rate and breakage rate. After roasting, the beans are soft, hot, and resilient. After cooling, the beans become hard. Cooling the roasted whole grains first facilitates the separation of the bean skin from the bean, increasing the peeling rate and reducing bean breakage. Simultaneously, rapid cooling after roasting effectively prevents oil oxidation. It is evident that the grading, baking, and peeling production line in this application can integrate grading, baking, cooling, and peeling of hulled grains, with a high degree of automation, suitable for assembly line production, large output, and low manual labor intensity.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A continuous grading, roasting, and dehulling production system for hulled grains, characterized in that, The system includes a grading and screening machine, a baking machine, a cooling machine, and a peeling machine. The grading and screening machine includes multiple screens with different aperture sizes, which are spaced apart vertically. The aperture size of the screens decreases from top to bottom along the vertical direction. The grading and screening machine is equipped with multiple grading discharge ends corresponding to different screens. The grading and screening machine is used to grade and screen hulled grains into various particle size specifications through the screens with different aperture sizes. Each grading discharge end is independently and sequentially connected to the baking machine, the cooling machine, and the peeling machine. The baking machine is used to bake the hulled grains, the cooling machine is used to cool the hulled grains, and the peeling machine is used to crack and remove the husks from the hulled grains.

2. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 1, characterized in that, The screen is detachably connected to the grading and screening machine.

3. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 1, characterized in that, The peeling machine has a first roller and a second roller that are rotatable in opposite directions. The first roller and the second roller can rotate in opposite directions under the action of an external driving force to crack and peel the husks of the grains.

4. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 3, characterized in that, The distance between the first roller and the second roller is adjustable.

5. The continuous grading, roasting, and dehulling production system for hulled grains according to any one of claims 1 to 4, characterized in that, It also satisfies at least one of the following conditions: (1) The continuous grading, baking and peeling production system for hulled grains further includes a first vertical elevator, which is used in conjunction with the grading and screening machine to lift the hulled grains into the grading and screening machine. (2) The continuous grading, baking and peeling production system for hulled grains further includes a second vertical elevator, which is connected between the grading discharge end and the corresponding baking machine. The second vertical elevator is used to lift the graded hulled grains into the corresponding baking machine. (3) The continuous grading, baking and peeling production system for hulled grains further includes a third vertical elevator, which is connected between the baking machine and the corresponding cooling machine. The third vertical elevator is used to lift the baked hulled grains into the corresponding cooling machine. (4) The continuous grading, baking and peeling production system for hulled grains further includes a fourth vertical elevator, which is connected between the cooler and the corresponding peeling machine. The fourth vertical elevator is used to lift the cooled hulled grains into the corresponding peeling machine.

6. The continuous grading, roasting, and dehulling production system for hulled grains according to any one of claims 1 to 4, characterized in that, The continuous grading, roasting, and peeling production system for hulled grains further includes a first collection mechanism, with each peeling machine connected to the first collection mechanism, which is used to collect the bean hull dust generated by the peeling machine.

7. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 6, characterized in that, The continuous grading, roasting, and peeling production system for hulled grains also includes a fifth vertical elevator, which is connected between the peeling machine and the corresponding first collection mechanism. The fifth vertical elevator is used to lift the bean hull dust into the corresponding first collection mechanism.

8. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 6, characterized in that, The first collection mechanism includes one or both of a collection box and a collection bag.

9. The continuous grading, roasting, and dehulling production system for hulled grains according to any one of claims 1-4 and 7-8, characterized in that, The continuous grading, roasting, and peeling production system for hulled grains also includes a second collection mechanism. Each of the peeling machines is connected to the second collection mechanism, which is used to collect the beans produced by the peeling machines.

10. The continuous grading, roasting, and dehulling production system for hulled grains according to claim 9, characterized in that, The continuous grading, roasting, and peeling production system for hulled grains also includes a receiving pipe, through which the second collecting mechanism is connected to the peeling machine.

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