Rice mill and control method thereof

Abstract

The invention relates to a rice husking machine and a control method thereof. The rice husking machine comprises a circulating bin, a rice husking mechanism and a fan. A circulation space is arranged in the circulation bin. The circulating bin is further provided with a rice inlet, a first circulating outlet and a first circulating inlet, and the rice inlet is configured to be controlled to be opened and closed. And a rice milling space is formed in the rice milling mechanism. The rice milling mechanism is further provided with a rice outlet, a bran outlet, a second circulation outlet and a second circulation inlet. The rice outlet is controlled to be opened and closed, the second circulation inlet communicates with the first circulation outlet, and the second circulation outlet communicates with the first circulation inlet. The fan is provided with an air inlet and an air outlet, the air inlet is communicated with the outside of the rice mill, and the air outlet is communicated with the bran outlet. The fan is used for driving to form drying airflow. According to the rice husking machine, the drying airflow can be generated through driving of the fan, the internal space of the circulating bin and the rice husking mechanism is dried, and water vapor in the circulating bin and the rice husking mechanism is rapidly taken away. In addition, the rice husking machine can be switched between a complete machine drying mode and a local drying mode, and unnecessary energy consumption is avoided.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to a rice milling machine and its control method. Background Technology

[0002] During rice processing, rice milling machines remove the husks and bran from the rice through friction and compression, producing edible white rice. However, in high-humidity environments or under continuous operation, moisture easily accumulates inside the equipment, especially in areas such as the circulation chamber, bran chamber, and rice outlet. This moisture mainly comes from the water content of the rice itself, air condensation, and water vapor generated during processing.

[0003] In related technologies, some rice milling machines use natural ventilation. However, natural ventilation has a long dehumidification cycle and low efficiency, making it difficult to reduce the humidity inside the rice milling machine in a timely manner. Summary of the Invention

[0004] Therefore, it is necessary to provide a rice milling machine and its control method that can more efficiently reduce internal humidity in order to address the above problems.

[0005] A rice milling machine, the rice milling machine comprising:

[0006] A circulation chamber has a circulation space inside; the circulation chamber also has a rice inlet, a first circulation outlet and a first circulation inlet, the rice inlet, the first circulation outlet and the first circulation inlet are all connected to the circulation space, and the rice inlet is configured to be opened and closed in a controlled manner.

[0007] A rice milling mechanism having a rice milling space; the rice milling mechanism also having a rice outlet, a bran outlet, a second circulation outlet, and a second circulation inlet, wherein the rice outlet, the bran outlet, the second circulation outlet, and the second circulation inlet are all connected to the rice milling space; the rice outlet is configured to be controlled to open and close, the second circulation inlet is connected to the first circulation outlet, and the second circulation outlet is connected to the first circulation inlet.

[0008] The fan has an air inlet and an air outlet, the air inlet being connected to the outside of the rice milling machine and the air outlet being connected to the bran outlet; the fan is used to drive the formation of a drying airflow.

[0009] In one embodiment, the fan drive is used to generate a drying airflow; the rice milling machine further includes a drying heating element disposed in the flow path of the drying airflow; in the flow direction of the drying airflow, the drying heating element is located upstream of the rice milling mechanism.

[0010] In one embodiment, the rice milling machine further includes a detection element, and the fan and the drying heating element are electrically connected to the detection element;

[0011] The detection element is located in at least one of the circulation chamber and the rice milling mechanism, and is used to detect humidity and / or temperature.

[0012] In one embodiment, the rice milling machine further includes a chamber heating element, which is disposed in the circulation chamber and used to heat the chamber wall of the circulation chamber.

[0013] In one embodiment, the heating element of the chamber is a graphene heating film, which is attached to the surface of the circulation chamber.

[0014] In one embodiment, the rice milling machine further includes a housing, and the circulation chamber and the rice milling mechanism are disposed within the housing;

[0015] The housing has a ventilation opening that connects the inside and outside of the housing; the fan is located on the inner surface of the housing and the air inlet faces the ventilation opening.

[0016] In one embodiment, the rice milling machine further includes a bran box having a bran inlet connected to the bran outlet; the air outlet of the blower is connected to the bran inlet.

[0017] In one embodiment, the fan is configured to have an adjustable speed.

[0018] In one embodiment, the rice milling machine further includes sealing rings, with sealing rings provided between the second circulation inlet and the first circulation outlet, and between the second circulation outlet and the first circulation inlet.

[0019] In one embodiment, the rice milling machine further includes a rice silo having a rice storage space;

[0020] The rice silo includes a silo body and a top cover plate. The top cover plate is detachably installed on the silo body, and the silo body and the top cover plate together define the rice storage space. The silo body has a rice outlet, which connects the rice storage space and the rice inlet.

[0021] A control method for a rice milling machine, comprising:

[0022] Obtain the humidity of the circulating space;

[0023] The fan is controlled to start and stop based on the humidity of the circulating space.

[0024] In one embodiment, after the step of controlling the start / stop of the fan based on the humidity of the circulating space, the method further includes:

[0025] Obtain the temperature of the circulating space;

[0026] Based on the temperature of the circulating space, control the start and stop of the drying heating element and / or the chamber heating element;

[0027] The drying heating element is used to heat the drying airflow generated by the fan, and the chamber heating element is used to heat the chamber wall of the circulating chamber.

[0028] The aforementioned rice milling machine and its control method utilize a fan to generate a drying airflow, drying the internal space of the circulation chamber and rice milling mechanism, quickly removing moisture. Furthermore, by opening the rice inlet and closing the rice outlet, the rice milling machine enters a whole-machine drying mode, where the drying airflow flows sequentially through the rice milling mechanism and circulation chamber, drying the parts of the rice milling machine that require drying. Conversely, by closing the rice inlet and opening the rice outlet, the rice milling machine enters a partial drying mode, where the drying airflow flows into the rice milling mechanism and exits directly from its outlet, drying the rice milling mechanism in a more concentrated and efficient manner. Thus, the rice milling machine can switch between whole-machine drying mode and partial drying mode, drying only as needed, avoiding unnecessary energy consumption. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a rice milling machine in one embodiment of this application.

[0031] Figure 2 for Figure 1 The diagram shows the structure of the rice milling machine with its right side shell hidden.

[0032] Figure 3 for Figure 1 The diagram shows the structure of the right side shell and the fan in the rice milling machine.

[0033] Figure 4 for Figure 1 The diagram shows a cross-sectional structure of the rice milling machine in the whole machine drying mode.

[0034] Figure 5 for Figure 1 The diagram shows a cross-sectional structure of a rice milling machine in partial drying mode.

[0035] Figure 6 This is a flowchart illustrating the control method of a rice milling machine in one embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 100, Rice milling machine; 10, Circulation chamber; 11, Circulation space; 12, Rice inlet; 13, First circulation outlet; 14, First circulation inlet; 20, Rice milling mechanism; 21, Rice milling space; 22, Rice outlet; 23, Bran outlet; 24, Second circulation outlet; 25, Second circulation inlet; 30, Fan; 31, Air inlet; 32, Air outlet; 40, Machine casing; 41, Ventilation vent; 42, Right side casing; 43, Bran box liner; 431, Middle passage; 432, Liner vent; 44, Rice box liner; 50, Rice bin; 51, Bin body; 511, Rice outlet; 52, Top cover; 60, Drying heating element; 70, Bran box; 80, Rice box; 90, Detection element. Detailed Implementation

[0037] 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.

[0038] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, where the term "and / or" appears, it merely describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the relationship between A and B: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects before and after it. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, four, five, etc., unless otherwise explicitly specified.

[0040] 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.

[0041] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0043] As described in the background section, rice milling machines are prone to excessive humidity. The heat generated during operation, causing the rice grains to evaporate their own moisture, is one factor contributing to increased humidity inside the machine. Prolonged retention of moisture inside the equipment can further cause the following problems: rice grains may stick together and clump due to moisture absorption, affecting feeding smoothness and reducing milling efficiency; a humid environment promotes mold growth, affecting food safety; water vapor condenses on metal parts, causing corrosion and shortening equipment lifespan; and localized temperature differences can lead to condensation, further exacerbating the harmful effects of moisture.

[0044] Besides natural ventilation, dehumidification can also be achieved using external fans or built-in heating elements. However, both external fan blowing and built-in heating elements have their own problems. External fans can only create localized turbulence and cannot form a continuous airflow path, resulting in a large dehumidification blind spot. Built-in heating elements suffer from uneven heating, slow thermal response, and a tendency to cause localized overheating, leading to high energy consumption. Furthermore, these dehumidification methods lack temperature and humidity feedback mechanisms, making it impossible to start and stop them as needed, which easily leads to energy waste.

[0045] Please see Figures 1 to 5 An embodiment of this application provides a rice milling machine 100, including a circulation chamber 10, a rice milling mechanism 20, and a blower 30. The circulation chamber 10 has a circulation space 11. The circulation chamber 10 also has a rice inlet 12, a first circulation outlet 13, and a first circulation inlet 14, all of which are connected to the circulation space 11. The rice inlet 12 is configured for controlled opening and closing. The rice milling mechanism 20 has a rice milling space 21. The rice milling mechanism 20 also has a rice outlet 22, a bran outlet 23, a second circulation outlet 24, and a second circulation inlet 25, all of which are connected to the rice milling space 21. The rice outlet 22 is configured for controlled opening and closing, the second circulation inlet 25 is connected to the first circulation outlet 13, and the second circulation outlet 24 is connected to the first circulation inlet 14. The blower 30 has an air inlet 31 and an air outlet 32. The air inlet 31 is connected to the outside of the rice milling machine 100, and the air outlet 32 ​​is connected to the bran outlet 23. The blower 30 is used to drive the formation of drying airflow.

[0046] The rice milling machine 100 is a continuous operation rice milling device suitable for household or commercial use, capable of removing rice bran as needed. To achieve its normal function, the rice milling machine 100 also includes a housing 40, a bran box 70, a rice box 80, and a controller. The bran box 70 has a bran inlet, which is positioned corresponding to the bran outlet 23. The rice box 80 has a rice inlet, which is positioned corresponding to the rice outlet 22.

[0047] During rice milling, the rice circulates between the circulating space 11 within the circulating chamber 10 and the milling space 21 within the milling mechanism 20 through the interconnected first circulating outlet 13 and second circulating inlet 25, and the interconnected first circulating inlet 14 and second circulating outlet 24. It is then subjected to the milling action of the milling mechanism 20 to remove the bran. The bran outlet 23 is normally open. The removed bran is discharged sequentially through the bran outlet 23 of the milling mechanism 20 and the bran receiving outlet of the bran box 70 into the bran box 70. The refined rice obtained after removing the bran is discharged sequentially through the rice outlet 22 and the rice receiving outlet into the rice box 80.

[0048] The fan 30 is driven to generate a drying airflow. Depending on the needs (e.g., whether the rice milling machine 100 is in the rice milling state), the rice milling machine 100 can selectively activate the whole-machine drying mode and the partial drying mode, corresponding to two different flow paths.

[0049] In the whole-machine drying mode, the rice inlet 12 of the circulation chamber 10 is open, and the rice outlet 22 is closed. The drying airflow blown from the air outlet 32 ​​of the blower 30 flows into the rice milling space 21 within the rice milling mechanism 20 from the bran outlet 23. At this time, since the rice outlet 22 is closed, the drying airflow can only flow to the circulation space 11 of the circulation chamber 10 and is discharged through the rice inlet 12. In this mode, the drying airflow has a relatively longer path and flows through the two main parts of the rice milling machine 100 that need to be dried: the rice milling mechanism 20 and the circulation chamber 10, thus achieving the purpose of whole-machine drying.

[0050] In the partial drying mode, the rice inlet 12 of the circulation chamber 10 is closed, and the rice outlet 22 is open. The drying airflow blown from the air outlet 32 ​​of the blower 30 flows into the rice milling space 21 within the rice milling mechanism 20 from the bran outlet 23. At this time, because the rice outlet 22 is open and the rice inlet 12 is closed, the drying airflow can only be discharged directly from the rice outlet 22. In this mode, the airflow path is relatively shorter, mainly targeting the rice milling mechanism 20 for drying, making dehumidification more targeted.

[0051] In one embodiment, baffles may be provided at the rice inlet 12 and the rice outlet 22, and the controller can control the movement of the baffles to open and close the rice inlet 12 and the rice outlet 22. In other embodiments, the rice inlet 12 and the rice outlet 22 may also be opened and closed in a controlled manner through deformation or other means, which are not specifically limited here.

[0052] The aforementioned rice milling machine 100 utilizes a fan 30 to generate a drying airflow, drying the internal spaces of the circulation chamber 10 and the rice milling mechanism 20, quickly removing moisture. Furthermore, by opening the rice inlet 12 and closing the rice outlet 22, the rice milling machine 100 enters a whole-machine drying mode, where the drying airflow flows sequentially through the rice milling mechanism 20 and the circulation chamber 10, drying the parts of the rice milling machine 100 that require drying. By closing the rice inlet 12 and opening the rice outlet 22, the rice milling machine 100 enters a partial drying mode, where the drying airflow flows into the rice milling mechanism 20 and exits directly from its outlet 22, drying the rice milling mechanism 20 in a more concentrated and efficient manner. Thus, the rice milling machine 100 can switch between whole-machine drying mode and partial drying mode, drying only as needed, avoiding unnecessary energy consumption.

[0053] In some embodiments, the rice milling machine 100 further includes a drying heating element 60, which is disposed in the flow path of the drying airflow. In the direction of the drying airflow, the drying heating element 60 is located upstream of the rice milling mechanism 20.

[0054] Understandably, after the fan 30 is turned on, the drying heating element 60 can be activated or deactivated. Accordingly, the rice milling machine 100 has a hot air drying mode and a cold air drying mode. In the hot air drying mode, both the fan 30 and the drying heating element 60 are activated, and the drying airflow driven by the fan 30 is heated to become hot air. In the cold air drying mode, the fan 30 is activated, the drying heating element 60 is deactivated, and the drying airflow driven by the fan 30 remains at room temperature.

[0055] In addition, the rice milling machine 100 can also have a hot and cold alternating drying mode, where the drying heating element 60 constantly changes its start and stop status, so that the drying airflow is sometimes hot air and sometimes normal temperature air.

[0056] In this way, the drying airflow generated by the fan 30 can be transformed into hot air under the heating of the drying heating element 60, resulting in a better drying effect.

[0057] Furthermore, the drying heating element 60 is located at the air outlet 32. In this way, the air blown out of the air outlet 32 ​​by the fan 30 can be directly heated by the drying heating element 60 and then flow downstream to perform the drying work.

[0058] Specifically, the drying heating element 60 can be, but is not limited to, a PTC ceramic heating element or a metal heating wire, etc., without specific limitations.

[0059] In some embodiments, the rice milling machine 100 further includes a detection element 90, and the fan 30 and the drying heating element 60 are electrically connected to the detection element 90. The detection element 90 is disposed in at least one of the circulation chamber 10 and the rice milling mechanism 20, and is used to detect humidity and / or temperature.

[0060] Understandably, the fan 30 and the drying heating element 60 are configured to operate based on the detection results of the detection element 90. Specifically, the fan 30, the drying heating element 60, and the detection element 90 are all electrically connected to the controller. The controller can control the operation of the fan 30 and the drying heating element 60 based on the detection results of the drying heating element 60, enabling the rice milling machine 100 to selectively activate the cold air drying mode and the hot air drying mode.

[0061] In this way, the drying operation of the rice milling machine 100 can be based on the detection results of the detection component 90, which can not only accurately dehumidify but also reduce unnecessary energy consumption and achieve closed-loop intelligent control.

[0062] Furthermore, the detection element 90 is provided in the circulation chamber 10 and the rice milling mechanism 20. The detection element 90 provided in the circulation chamber 10 is used to detect the humidity and / or temperature of the circulation space 11, and the detection element 90 provided in the rice milling mechanism 20 is used to detect the humidity and / or temperature of the rice milling space 21.

[0063] Furthermore, in addition to the circulation chamber 10 and the rice milling mechanism 20, the detection component 90 can also be installed at the bran outlet 23, the bran box 70, or the rice outlet 22, etc., to achieve multi-point monitoring and improve control accuracy.

[0064] Specifically, the detection component 90 is a temperature and humidity sensor, which can detect both humidity and temperature.

[0065] In some embodiments, the rice milling machine 100 further includes a chamber heating element, which is disposed in the circulation chamber 10 and is used to heat the chamber wall of the circulation chamber 10.

[0066] In this way, the heating element of the storage chamber can heat the walls of the circulation chamber 10 and maintain the temperature of the walls of the circulation chamber 10 above the dew point temperature to prevent humid air from condensing into water on its inner surface, causing the rice or grains in the circulation space 11 to stick together, clump together, or become moldy.

[0067] Furthermore, the heating element of the chamber is electrically connected to the detection element 90, and starts and stops based on the detection result of the detection element 90.

[0068] In some embodiments, the heating element of the chamber is a heating film, which is attached to the surface of the circulation chamber 10.

[0069] In this way, the heating element of the chamber can better fit the circulating chamber 10, and evenly and fully increase the temperature of the chamber wall of the circulating chamber 10.

[0070] Furthermore, the heating film is a graphene heating film.

[0071] Graphene electrothermal films use flexible substrate materials (such as polyimide) to support single or multiple layers of graphene conductive layers, and can be heated at a constant or variable temperature within the range of 30 to 80°C after being energized.

[0072] Thus, the heating film has the characteristics of high thermal conductivity, low thermal inertia, and uniform heating.

[0073] In other embodiments, the heating film may also be a carbon fiber heating film or a metal foil heating sheet, which has the advantage of lower cost. The heating element of the chamber may also be an electric heating wire, a PTC ceramic heating element, etc. The heating element of the chamber may be disposed on the outer surface, inner surface, or embedded in the chamber wall of the circulation chamber 10, and is not specifically limited here.

[0074] In some embodiments, the rice milling machine 100 also has an intermittent pulse mode, in which the fan 30 starts and stops intermittently after the intermittent pulse mode is activated, and the heating element of the silo continues to keep warm, so as to be suitable for nighttime standby dehumidification scenarios.

[0075] In some embodiments, the circulation chamber 10 and the rice milling mechanism 20 are disposed within the housing 40. The housing 40 has a vent 41, which connects the inner and outer sides of the housing 40. A fan 30 is disposed on the inner surface of the housing 40, and the air inlet 31 faces the vent 41.

[0076] In this way, the ventilation openings 41 on the surface of the housing 40 can ensure the air intake of the fan 30, allowing it to draw in air from the outside, form a dry airflow, dry the inside, and then blow it out.

[0077] In some embodiments, the bran box 70 has a bran inlet that is connected to the bran outlet 23. The air outlet 32 ​​of the blower 30 is connected to the bran inlet.

[0078] In this way, the drying airflow blown out by the blower 30 first flows into the bran box 70 from the bran inlet, and then flows from the bran box 70 to the bran outlet 23. During this process, the bran box 70 is dried as well, further reducing the dehumidification dead corners in the rice milling machine 100.

[0079] In one embodiment, the blower 30 is located inside the left or right shell 42 of the housing 40 and above the bran box assembly space. The top of the bran box liner 43 is provided with an inner liner air vent 432 that connects its upper and lower sides, and the air outlet 32 ​​of the blower 30 is connected to the inner liner air vent 432.

[0080] Thus, the drying airflow generated by the blower 30 is blown through the inner lining air vent 432 to the bran box 70 located in the bran box assembly space, and then sequentially through the bran receiving port at the top of the bran box 70, the middle passage 431 of the bran box inner lining 43, and the bran outlet 23 of the rice milling mechanism 20, and enters the rice milling mechanism 20.

[0081] In some other embodiments, the fan 30 may also be installed on the top or rear side inside the housing 40, and the position of the inner lining air vent 432 may be adjusted accordingly, as long as the drying airflow can smoothly enter the rice milling mechanism 20 to achieve ventilation of the whole machine, without any specific limitation.

[0082] In some embodiments, the fan 30 is configured to have an adjustable speed.

[0083] In this way, the speed of the fan 30 can be adjusted as needed to change the amount of air it blows out, that is, the flow rate of the drying airflow. For example, when the humidity is high, the fan 30 operates at a high speed, and when the humidity is low, the fan 30 operates at a low speed.

[0084] Specifically, the fan 30 uses a DC brushless motor, combined with PWM speed regulation, to achieve stepless airflow adjustment and further optimize energy consumption.

[0085] In some embodiments, the rice milling machine 100 further includes sealing rings, with sealing rings provided between the second circulation inlet 25 and the first circulation outlet 13, and between the second circulation outlet 24 and the first circulation inlet 14.

[0086] In this way, the sealing ring can enhance the airtightness of the connection between the second circulation inlet 25 and the first circulation outlet 13, and between the second circulation outlet 24 and the first circulation inlet 14, thereby reducing the loss of drying airflow.

[0087] In some embodiments, the housing 40 includes an outer shell, a bran box liner 43, and a rice box liner 44. The bran box liner 43 and the rice box liner 44 are disposed within the outer shell, forming a bran box assembly space and a rice box assembly space, respectively, within the outer shell. The bran box 70 is detachably installed in the bran box assembly space. The bran box 70 can be disassembled and assembled in a drawer-like manner and, after being installed, is embedded in the bran box assembly space. The rice box 80 is detachably installed in the rice box assembly space. The rice box 80 can also be disassembled and assembled in a drawer-like manner and, after being installed, is embedded in the rice box assembly space. The bran box liner 43 has a central opening 431, which connects to and communicates with the bran outlet 23. A sealing ring is provided at the connection between the central opening 431 and the bran outlet 23.

[0088] In some embodiments, the rice milling machine 100 further includes a rice silo 50, which has a rice storage space. The rice silo 50 includes a silo body 51 and a top cover 52, the top cover 52 being detachably mounted on the silo body 51, and the silo body 51 and the top cover 52 together define the rice storage space. The silo body 51 has a rice outlet 511, which connects the rice storage space and the rice inlet 12.

[0089] Understandably, the grain storage space of the rice silo 50 is used to store rice, and the maximum amount of rice it can hold is sufficient for the rice milling mechanism 20 to perform at least two cycles of rice milling. The rice silo 50 can be located above the circulation chamber 10. During rice milling, the rice inlet 12 is opened first, and the rice falls into the circulation chamber 10 below through the rice outlet 511 and the rice inlet 12 under the action of gravity. After the amount of rice is sufficient, the rice inlet baffle closes the rice inlet 12 and remains closed during the rice milling process.

[0090] In the whole machine drying mode, the top cover plate 52 is opened so that the drying airflow can flow from the rice inlet 12 and the rice outlet 511 to the grain storage space and out of the rice milling machine 100.

[0091] In this way, the rice silo 50 can temporarily store some rice, increasing the amount of rice that the rice milling machine 100 can mill in a single cycle. In the whole machine drying mode, the drying airflow can also be used to dry the rice silo 50.

[0092] The aforementioned rice milling machine 100 includes a circulation chamber 10, a rice milling mechanism 20, a fan 30, a machine casing 40, a paddy silo 50, a drying and heating element 60, a bran box 70, a rice box 80, a detection element 90, a silo heating element, and a controller. The circulation chamber 10 and the rice milling mechanism 20 are both located within the machine casing 40. The circulation chamber 10 is positioned above the rice milling mechanism 20 and is connected to the second circulation inlet 25 via a first circulation outlet 13 and to the second circulation outlet 24 via a first circulation inlet 14, thus achieving communication with the rice milling mechanism 20. The fan 30 is located within the machine casing 40, specifically in the right side shell 42. A ventilation opening 41 is provided on the right side shell 42, corresponding to the air inlet 31 of the fan 30. The blower 30 is located above the bran box assembly space. The top of the bran box liner 43 has an inner liner air vent 432 connecting its upper and lower sides. The air outlet 32 ​​of the blower 30 connects to the inner liner air vent 432. The drying heating element 60 is located at the air outlet 32 ​​of the blower 30. The housing 40 includes an outer shell, a bran box liner 43, and a rice box liner 44. The bran box liner 43 and the rice box liner 44 are located inside the outer shell, forming the bran box assembly space and the rice box assembly space respectively. The bran box 70 and the rice box 80 are detachably installed in the bran box assembly space. Furthermore, the top of the bran box liner 43 has a central opening 431, which connects to the bran outlet 23 of the rice milling mechanism 20. Thus, after the bran box 70 is installed, it is embedded in the bran box assembly space, participating in the formation of a sealed air duct. The drying airflow generated by the blower 30 is blown through the inner lining air outlet 432 to the bran box 70 located in the bran box assembly space, and then sequentially through the bran receiving port at the top of the bran box 70, the middle passage 431 of the bran box inner lining 43, and the bran outlet 23 of the rice milling mechanism 20, and enters the rice milling mechanism 20.

[0093] Depending on whether the rice milling machine 100 is in the rice milling state, the rice milling machine 100 can selectively activate the whole machine drying mode and the partial drying mode. Based on the humidity and temperature results detected by the detection element 90 in the circulation space 11, the controller can selectively activate the cold air drying mode and the hot air drying mode, and control whether the heating element of the chamber is activated.

[0094] In the whole-machine drying mode, the rice inlet 12 of the circulation chamber 10 is opened, allowing the circulation space 11 to connect with the grain holding space through the rice inlet 12, while the rice outlet 22 is closed. Simultaneously, the top cover 52 is opened, allowing the drying airflow entering the rice milling mechanism 20 to pass through the circulation chamber 10 and the rice hopper 50 before being discharged upwards, forming a complete horizontal-vertical composite airflow path (e.g., ...). Figure 4 (As shown by the middle arrow), to achieve complete removal of moisture from inside the machine.

[0095] In partial drying mode, the rice inlet 12 is closed and the rice outlet 22 is opened. The drying airflow entering the rice milling mechanism 20 is directly discharged from the rice outlet 22, forming a short-path airflow (e.g., ...). Figure 5 (As shown by the middle arrow), perform partial drying to avoid unnecessary energy consumption. At this time, the rice box 80 can be pulled out to allow the drying airflow to be discharged more smoothly outside the rice milling machine 100.

[0096] In hot air drying mode, both the fan 30 and the drying heating element 60 are activated. The drying airflow driven by the fan 30 is heated to form hot air. In cold air drying mode, the fan 30 is activated, but the drying heating element 60 is not activated. The drying airflow driven by the fan 30 remains at room temperature. Furthermore, the controller can automatically adjust the power of the fan 30 and the heating element based on the detection results from the detection element 90.

[0097] The heating element of the storage chamber is a graphene electric heating film, which is attached to the outer peripheral surface of the circulation chamber 10. This graphene electric heating film uses a flexible substrate material (such as polyimide) to support single or multiple layers of graphene conductive layers. After being energized, it can maintain a constant or variable temperature heating within the range of 30-80℃. When the graphene electric heating film is turned on, it can maintain the temperature of the circulation chamber 10 wall above the dew point temperature in a high humidity environment, preventing humid air from condensing into water droplets on the inner wall of the circulation chamber 10, thereby reducing the risk of rice sticking together and becoming moldy.

[0098] The detection element 90 is a temperature and humidity sensor, located inside the circulation chamber 10, used to collect environmental data in real time and transmit the signal to the main control module of the controller. The main control module presets a humidity threshold (e.g., RH>65%) and a temperature compensation strategy. When excessive humidity is detected, the fan 30 is automatically started, and the system determines whether to activate the hot air drying mode or the graphene electric heating film based on the current temperature. For example, in a low-temperature, high-humidity environment, the system prioritizes activating the graphene electric heating film to raise the temperature, supplemented by hot air blowing to achieve efficient dehumidification; in a normal-temperature, high-humidity environment, only cold air blowing is activated to achieve energy saving.

[0099] In addition, the rice milling machine 100 is equipped with sealing rings at all interfaces along the flow path of the drying airflow to ensure airtightness. The start and stop of the fan 30, the heating of the drying heating element 60, the switching of the rice inlet 12, and the switching of the rice outlet 22 are all coordinated by the PLC or microcontroller of the controller, which supports both manual operation and automatic timer modes.

[0100] Thus, the Rice Mill 100, through the combination of optimized airflow structure, precise heat source placement, and intelligent sensor control, constructs a highly efficient, energy-saving, and reliable drying system. This effectively solves the long-standing moisture management problem plaguing the industry. It can intelligently switch drying modes according to operating conditions, features an efficient hot air circulation path, and prevents condensation, improving equipment operational stability, finished rice quality, and energy efficiency. Dehumidification is more thorough, and it can switch between whole-machine / partial drying modes as needed, with better temperature control accuracy. In whole-machine drying mode, the Rice Mill 100 forms a continuous airflow duct, achieving uniform dehumidification throughout the machine. The longer airflow path reduces dehumidification blind spots. With excellent dehumidification performance, moisture accumulation inside the Rice Mill 100 is reduced, alleviating problems such as rice grain sticking and clumping, thereby improving rice milling efficiency and finished rice quality.

[0101] Please refer to the following: Figure 6 This application also provides a control method for a rice milling machine, used to control the aforementioned rice milling machine. The control method for the rice milling machine includes:

[0102] S200: Obtain the humidity of the circulating space.

[0103] The humidity of the circulating space can be detected by a sensor, and the humidity of the circulating space can be the relative humidity.

[0104] S400 controls the start and stop of the fan based on the humidity of the circulating space.

[0105] Specifically, when the humidity of the circulating space is not less than the set humidity threshold, the fan is controlled to start working; when the humidity of the circulating space is less than the set humidity threshold, the fan is controlled to stop working.

[0106] The above-mentioned control method for rice milling machines can automatically control the start and stop of the fan according to the humidity of the circulating space, making the timing of dehumidification more precise and targeted, which helps to reduce the energy consumption of rice milling machines.

[0107] In some embodiments, after controlling the start and stop of the fan based on the humidity of the circulating space, the method further includes:

[0108] Obtain the temperature of the circulation space;

[0109] Based on the temperature of the circulating space, control the start and stop of the drying heating elements and / or the chamber heating elements;

[0110] Among them, the drying heating element is used to heat the drying airflow generated by the fan, and the chamber heating element is used to heat the chamber wall of the circulating chamber.

[0111] Specifically, the temperature of the circulating space can be detected by a sensor. If the temperature of the circulating space is not lower than the set temperature threshold, the drying heating element and / or the chamber heating element will stop working; if the temperature of the circulating space is lower than the set temperature threshold, the drying heating element and / or the chamber heating element will start working.

[0112] In this way, the heating elements and chamber heating elements can be activated only when the temperature of the circulating space is low, thereby increasing the temperature of the drying airflow and improving its drying capacity, as well as increasing the temperature of the circulating chamber walls to prevent condensation from forming on their inner surfaces. When the temperature of the circulating space is high, the heating elements and chamber heating elements can be deactivated to reduce the energy consumption of the rice milling machine.

[0113] 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.

[0114] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 rice milling machine, characterized in that, The rice milling machine includes: A circulation chamber (10) has a circulation space (11) therein; the circulation chamber (10) also has a rice inlet (12), a first circulation outlet (13) and a first circulation inlet (14), the rice inlet (12), the first circulation outlet (13) and the first circulation inlet (14) are all connected to the circulation space (11), and the rice inlet (12) is configured to be opened and closed in a controlled manner; A rice milling mechanism (20) has a rice milling space (21) therein; the rice milling mechanism (20) also has a rice outlet (22), a bran outlet (23), a second circulation outlet (24) and a second circulation inlet (25), the rice outlet (22), the bran outlet (23), the second circulation outlet (24) and the second circulation inlet (25) are all connected to the rice milling space (21); the rice outlet (22) is configured to be controlled to open and close, the second circulation inlet (25) is connected to the first circulation outlet (13), and the second circulation outlet (24) is connected to the first circulation inlet (14); The fan (30) has an air inlet (31) and an air outlet (32), the air inlet (31) being connected to the outside of the rice milling machine, and the air outlet (32) being connected to the bran outlet (23).

2. The rice milling machine according to claim 1, characterized in that, The fan (30) is driven to form a drying airflow; the rice milling machine also includes a drying heating element (60), which is located on the flow path of the drying airflow; in the flow direction of the drying airflow, the drying heating element (60) is located upstream of the rice milling mechanism (20).

3. The rice milling machine according to claim 2, characterized in that, The rice milling machine also includes a detection component (90), and the fan (30) and the drying heating component (60) are electrically connected to the detection component (90); The detection element (90) is disposed in at least one of the circulation chamber (10) and the rice milling mechanism (20) and is used to detect humidity and / or temperature.

4. The rice milling machine according to claim 1, characterized in that, The rice milling machine also includes a chamber heating element, which is located in the circulating chamber (10) and is used to heat the chamber wall of the circulating chamber (10).

5. The rice milling machine according to claim 4, characterized in that, The heating element of the chamber is a graphene heating film, which is attached to the surface of the circulation chamber (10).

6. The rice milling machine according to claim 1, characterized in that, The rice milling machine also includes a housing (40), and the circulation chamber (10) and the rice milling mechanism (20) are located inside the housing (40); The housing (40) has a vent (41) that connects the inside and outside of the housing (40); the fan (30) is located on the inner surface of the housing (40) and the air inlet (31) faces the vent (41).

7. The rice milling machine according to claim 6, characterized in that, The rice milling machine also includes a bran box (70), which has a bran inlet and is connected to the bran outlet (23); the air outlet (32) of the blower (30) is connected to the bran inlet.

8. The rice milling machine according to claim 1, characterized in that, The fan (30) is configured to have an adjustable speed.

9. The rice milling machine according to claim 1, characterized in that, The rice milling machine also includes sealing rings, and sealing rings are provided between the second circulation inlet (25) and the first circulation outlet (13) and between the second circulation outlet (24) and the first circulation inlet (14).

10. The rice milling machine according to claim 1, characterized in that, The rice milling machine also includes a rice silo (50) with a rice storage space; The rice silo (50) includes a silo body (51) and a top cover plate (52). The top cover plate (52) is detachably installed on the silo body (51), and the silo body (51) and the top cover plate (52) together define the rice storage space. The silo body (51) has a rice outlet (511), which connects the rice storage space with the rice inlet (12).

11. A control method for a rice milling machine, characterized in that, The method for controlling the rice milling machine as described in any one of claims 1-10 includes: Obtain the humidity of the circulating space; The fan is started and stopped based on the humidity of the circulating space.

12. The control method for a rice milling machine according to claim 11, characterized in that, After the step of controlling the start and stop of the fan based on the humidity of the circulating space, the method further includes: Obtain the temperature of the circulating space; Based on the temperature of the circulating space, control the start and stop of the drying heating element and / or the chamber heating element; The drying heating element is used to heat the drying airflow generated by the fan, and the chamber heating element is used to heat the chamber wall of the circulating chamber.

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