Rice milling structure and household rice mill

Abstract

The application relates to a rice milling structure and a household rice mill, and the rice milling structure comprises a first bin with a first material cavity and a first rice milling opening communicated with the first bin; a second bin with a second material cavity and a second rice milling opening communicated with the second bin; and a rice milling assembly with a rice milling channel communicated with the first rice milling opening and the second rice milling opening. In the rice milling structure, the user only needs to put the rice into the first bin, and then starts the rice milling structure. During the working process of the rice milling structure, the rice is circulated between the first bin and the second bin and repeatedly milled by the rice milling assembly. The whole secondary milling process does not need manual collection and transfer of raw materials, so that the operation steps can be simplified, the processing efficiency is improved, and the problem of spilling and pollution during the transfer of rice is avoided.

Description

Technical Field

[0001] This application relates to the field of rice milling equipment technology, and in particular to a rice milling structure and a household rice milling machine. Background Technology

[0002] A rice milling machine is an important grain processing device used to remove the husk from paddy rice and process it into white rice. It is widely used in homes and small workshops. Most household rice milling machines are one-pass whitening machines, meaning that the paddy rice enters from the feed inlet, passes through the whitening chamber composed of a screw and a screen, is processed once, and is then discharged directly.

[0003] However, in actual use, household rice milling machines often fail to achieve both high hulling and low broken rice rates after a single milling process. Users typically need to manually collect the initial milled rice, re-feed it, and mill it a second time. This process requires repeated manual intervention to achieve the desired hulling and broken rice rates, which is not only cumbersome and inefficient but also prone to spillage and contamination. Summary of the Invention

[0004] Therefore, it is necessary to provide a rice milling structure and a household rice milling machine to address the problem that it is difficult to balance the dehulling rate and broken rice rate after a single milling of rice, and that users need to manually collect the first milled rice and re-feed it.

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

[0006] The first hopper has a first material chamber and a first rice milling opening that communicates with the first material chamber;

[0007] The second hopper has a second material chamber and a second rice milling opening that communicates with the second material chamber;

[0008] A rice milling assembly has a rice milling channel, which is connected to the first rice milling opening and the second rice milling opening respectively;

[0009] The rice milling structure can switch between a first working state and a second working state during operation. When the rice milling structure is in the first working state, the raw material in the first material chamber can flow into the rice milling channel through the first rice milling inlet. The first rice milling inlet is located upstream of the rice milling channel, and the second rice milling inlet is located downstream of the rice milling channel. The raw material in the rice milling channel can flow into the second material chamber through the second rice milling inlet.

[0010] When the rice milling structure is in the second working state, the raw material in the second material chamber can flow into the rice milling channel through the second rice milling inlet. The second rice milling inlet is located upstream of the rice milling channel, and the first rice milling inlet is located downstream of the rice milling channel. The raw material in the rice milling channel can flow into the first material chamber through the first rice milling inlet.

[0011] In one embodiment, the two opposite ends of the rice milling channel are respectively connected to the first rice milling opening and the second rice milling opening, and the rice milling assembly has a rice milling screw disposed in the rice milling channel. The rice milling screw can be controlled to move around its own axis in a first circumferential direction or a second circumferential direction, wherein the first circumferential direction and the second circumferential direction are opposite.

[0012] When the rice milling structure is in the first working state, the rice milling screw moves around the first circumferential direction; when the rice milling structure is in the second working state, the rice milling screw moves around the second circumferential direction.

[0013] In one embodiment, the rice milling structure further includes a rotating component that is kinetically connected to the first hopper and the second hopper and can controllably change the position of the first hopper and the second hopper relative to the rice milling component;

[0014] When the rice milling structure is in the first working state, the first hopper is located above the rice milling assembly, and the second hopper is located below the rice milling assembly; when the rice milling structure is in the second working state, the second hopper is located above the rice milling assembly, and the first hopper is located below the rice milling assembly.

[0015] In one embodiment, the rice milling assembly further includes a rice milling shell, in which the rice milling channel is formed, and the opposite ends of the rice milling shell are respectively connected to the first hopper and the second hopper;

[0016] The rotating component is connected to the rice milling shell in a transmission manner, and the rotating component can drive the rice milling shell to rotate around its own axis.

[0017] In one embodiment, the rotating assembly includes a rotation drive, a drive gear, and a drive gear ring. The drive gear ring is disposed on the rice milling shell and is arranged circumferentially around the rice milling shell. The drive gear is connected to the rotation drive and meshes with the drive gear ring.

[0018] In one embodiment, the rotating assembly further includes a transmission rod, the rotation drive member is connected to the transmission rod, and the drive gear includes a plurality of gears, all of which are spaced apart on the transmission rod;

[0019] The drive gear rings include multiple drive gear rings, all of which are spaced apart along the axial direction of the rice milling shell, and each drive gear ring meshes with one of the drive gears.

[0020] In one embodiment, there are two of each of the rotation drive members and the transmission rods. Each rotation drive member is connected to one of the transmission rods. The two rotation drive members and the two transmission rods are located on opposite sides of the rice milling shell. Each transmission rod is provided with a plurality of drive gears, and each drive gear meshes with one of the drive gear rings.

[0021] In one embodiment, the rice milling shell is further provided with sieve holes, and the rice milling structure also includes a collecting member, which is located below the sieve holes when the rice milling structure is in operation.

[0022] In one embodiment, the first hopper is further provided with a first feed inlet communicating with the first hopper. The first feed inlet can be opened or closed in a controlled manner. When the rice milling structure is in the first working state and the second working state, the first feed inlet and the first rice milling inlet are respectively located at both ends of the first hopper in the direction of gravity.

[0023] In one embodiment, the second hopper is further provided with a second feed inlet communicating with the second feed chamber. The second feed inlet can be opened or closed in a controlled manner. When the rice milling structure is in the first working state or the second working state, the second feed inlet and the second rice milling inlet are respectively located at both ends of the second hopper in the direction of gravity.

[0024] A household rice milling machine includes the rice milling structure as described above.

[0025] The above-described rice milling structure allows users to simply place paddy rice into the first hopper and start the milling mechanism. During operation, the milling mechanism automatically or manually switches between a first and a second working state, causing the paddy rice to circulate between the two hoppers. During this circulation, the paddy rice is repeatedly milled by the milling components, ultimately producing rice grains with ideal broken rice and hulling rates. Compared to traditional rice milling machines, the entire secondary milling process eliminates the need for manual collection and transfer of raw materials; it is completed automatically simply by switching working states. This not only simplifies operation and improves processing efficiency but also avoids the problem of spillage and contamination during rice grain transfer. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a traditional rice milling machine.

[0027] Figure 2 This is a structural diagram of the rice milling structure in some embodiments of this application.

[0028] Figure 3 for Figure 2 An exploded view of the rice milling structure in the embodiment.

[0029] Figure 4 for Figure 2 A cross-sectional schematic diagram of the rice milling structure in the embodiment.

[0030] Figure 5 This is a schematic diagram of the structure of the rice milling assembly and the rotating assembly in some embodiments of this application.

[0031] Figure 6 for Figure 5 A cross-sectional schematic diagram of the rice milling component and the rotating component in the embodiment.

[0032] Figure 7 This is a schematic diagram of the structure of the second hopper in some embodiments of this application.

[0033] Figure 8 This is a schematic diagram of the structure of the rice milling shell in some embodiments of this application.

[0034] Figure 9 This is a schematic diagram of the structure of the drive gear ring in some embodiments of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] Feed port 10; discharge port 11;

[0037] First hopper 100; First feed chamber 110; First rice milling inlet 120; First hopper body 130; First cover plate 140; First feed inlet 150;

[0038] Second hopper 200; Second feed chamber 210; Second rice milling inlet 220; Second hopper body 230; Second cover plate 240; Second feed inlet 250;

[0039] Rice milling assembly 300; rice milling channel 310; rice milling screw 320; rice milling shell 330; rice milling motor 340; sieve hole 350; insertion part 360;

[0040] Rotating component 400; Rotation drive component 410; Drive gear 420; Drive gear ring 430; Transmission rod 440; Slot 450;

[0041] 500 items collected. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] 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 based on the specific circumstances.

[0046] 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.

[0047] 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.

[0048] See Figure 1 , Figure 1 This is a schematic diagram of a traditional rice milling machine, such as... Figure 1 As shown, the rice milling machine has a feeding port 10 on the top and a discharge port 11 on one side. When using the rice milling machine, the user adds raw materials such as rice through the feeding port 10. After the raw materials are milled once in the whitening chamber inside the rice milling machine, they are discharged directly from the discharge port 11 to complete the processing.

[0049] Therefore, for traditional rice milling machines, if the degree of hulling of the brown rice after milling is not up to standard, users need to manually collect the rice grains after the initial milling and pour them back into the feed inlet 10 for secondary milling. The whole process requires manual intervention and involves many steps, which leads to low processing efficiency of paddy rice. Moreover, during the process of collecting and transferring rice grains, it is easy for rice grains to spill and become contaminated, ultimately resulting in a poor user experience.

[0050] To solve the above problems, see Figures 2 to 4 This application provides an embodiment of a household rice milling machine, which includes a milling structure for dehulling paddy rice to separate the bran. This application aims to protect a household rice milling machine belonging to the energy-saving and environmental protection industry, specifically an energy-saving household kitchen appliance. The main function of this household rice milling machine is to efficiently separate the bran from paddy rice and obtain pure rice grains. Through its design and technological application, it can significantly reduce energy consumption during operation, thus meeting the requirements of energy conservation and environmental protection. Furthermore, as a kitchen appliance designed for home use, it not only possesses practicality and convenience but also meets the modern family's pursuit of green living and sustainable development, providing users with a healthier and more environmentally friendly food processing method.

[0051] Specifically, the rice milling structure includes a first hopper 100, a second hopper 200, and a rice milling assembly 300. The first hopper 100 has a first material cavity 110 inside, and the first hopper 100 has a first rice milling opening 120 communicating with the first material cavity 110. The second hopper 200 has a second material cavity 210 inside, and the second hopper 200 has a second rice milling opening 220 communicating with the second material cavity 210.

[0052] The rice milling assembly 300 has a rice milling channel 310 inside, which is connected to a first rice milling inlet 120 and a second rice milling inlet 220. This allows the paddy rice in the first feed chamber 110 to enter the rice milling channel 310 for milling through the first rice milling inlet 120, or the milled paddy rice in the rice milling channel 310 to return to the first feed hopper 100 through the first rice milling inlet 120. Similarly, the paddy rice in the second feed chamber 210 can enter the rice milling channel 310 for milling through the second rice milling inlet 220, or the milled paddy rice in the rice milling channel 310 can return to the second feed hopper 200 through the second rice milling inlet 220.

[0053] It is understandable that the rice milling channel 310 can achieve the milling of paddy rice through the rice milling screw 320, or through other existing extrusion milling structures, as long as the paddy rice can move in the rice milling channel 310 and be milled and dehulled.

[0054] In order to achieve reciprocating milling of rice, the above-mentioned rice milling structure can switch between a first working state and a second working state during operation. When the rice milling structure is in the first working state, the raw material in the first material chamber 110 can flow into the rice milling channel 310 through the first rice milling inlet 120, and the first rice milling inlet 120 is located upstream of the rice milling channel 310. The second rice milling inlet 220 is located downstream of the rice milling channel 310, and the raw material in the rice milling channel 310 can flow into the second material chamber 210 through the second rice milling inlet 220. When the rice milling structure is in the second working state, the raw material in the second material chamber 210 can flow into the rice milling channel 310 through the second rice milling inlet 220, and the second rice milling inlet 220 is located upstream of the rice milling channel 310. The first rice milling inlet 120 is located downstream of the rice milling channel 310, and the raw material in the rice milling channel 310 can flow into the first material chamber 110 through the first rice milling inlet 120.

[0055] In this context, upstream and downstream correspond to the flow direction of the raw materials within the rice milling channel 310. When the raw materials are milled by the extrusion and grinding structure such as the rice milling screw 320 within the rice milling channel 310, they flow along the channel. The first rice milling inlet 120 is located upstream of the rice milling channel 310, and the second rice milling inlet 220 is located downstream. In this case, the raw materials flow from the first rice milling inlet 120 to the second rice milling. Similarly, when the second rice milling inlet 220 is located upstream of the rice milling channel 310, and the first rice milling inlet 120 is located downstream, the raw materials flow from the first rice milling inlet 120 to the second rice milling.

[0056] Thus, when a user needs to repeatedly grind the raw materials, the raw materials can first be put into the first hopper 100, and then the rice milling component 300 can be started. The raw materials in the first hopper 100 can be input into the rice milling channel 310 through the first rice milling inlet 120. During the grinding process in the rice milling channel 310, the raw materials will gradually flow to the second rice milling inlet 220, and finally enter the second hopper 200 through the second rice milling inlet 220, where they will be temporarily stored.

[0057] Afterwards, the user can manually or the rice milling structure can automatically switch from the first working state to the second working state. At this time, the raw materials in the second hopper 200 can flow into the rice milling channel 310 through the second rice milling inlet 220. During the grinding process in the rice milling channel 310, the raw materials will gradually flow to the first rice milling inlet 120 and finally enter the first hopper 100 through the first rice milling inlet 120, where they will be temporarily stored.

[0058] According to actual needs or program settings, the user can switch the rice milling structure between the first and second working states once or multiple times. The raw materials in the first hopper 100 or the second hopper 200 will then repeatedly pass through the rice milling channel 310, achieving cyclical whitening of the raw materials and ultimately realizing the ideal broken rice rate and hulling rate. It should be noted that the aforementioned raw materials can be unmilled paddy rice or rice grains that have undergone one or more milling processes.

[0059] Thus, with the aforementioned rice milling structure, the user only needs to place the paddy rice into the first hopper 100 and start the milling mechanism. During operation, the milling mechanism automatically or manually switches between the first and second working states, allowing the paddy rice to circulate between the first hopper 100 and the second hopper 200. During this circulation, the paddy rice is repeatedly milled by the milling components 300, ultimately producing rice grains with ideal broken rice and hulling rates. Compared to traditional rice milling machines, the entire secondary milling process does not require manual collection and transfer of raw materials; it is completed automatically simply by switching working states. This not only simplifies the operation and improves processing efficiency but also avoids the problem of spillage and contamination during rice grain transfer.

[0060] In some embodiments of this application, in order to achieve the switching between the first rice milling inlet 120 and the second rice milling inlet 220 upstream and downstream, the two opposite ends of the rice milling channel 310 are respectively connected to the first rice milling inlet 120 and the second rice milling inlet 220. Based on this, the rice milling assembly 300 has a rice milling screw 320 disposed in the rice milling channel 310. The rice milling screw 320 can be controlled to move around its own axis in a first circumferential direction or a second circumferential direction, the first circumferential direction and the second circumferential direction being opposite.

[0061] In actual use, a flow space for raw materials is formed between the rice milling screw 320 and the inner wall of the milling channel. When the raw materials enter the space between the rice milling screw 320 and the milling channel, the rotation of the rice milling screw 320 will cause the rice grains to be squeezed against the rice milling screw 320 and the inner wall of the milling channel, thereby achieving the milling of the raw materials and finally completing the dehulling of the rice.

[0062] When the rice milling screw 320 rotates in different circumferential directions, the raw material will flow in opposite directions in the rice milling channel 310. This is so that when the rice milling screw 320 moves in the first circumferential direction, the raw material will flow from the first rice milling opening 120 to the second rice milling opening 220. Conversely, when the rice milling screw 320 moves in the second circumferential direction, the raw material will flow from the second rice milling opening 220 to the first rice milling opening 120.

[0063] Thus, by simply changing the rotation direction of the rice milling screw 320, the switching between the first rice milling nozzle 120 and the second rice milling nozzle 220 between upstream and downstream can be achieved. Optionally, the rice milling structure also includes a rice milling motor 340, which is connected to the rice milling screw 320 and is used to drive the rice milling screw 320 to rotate around its own axis in a first circumferential direction or a second circumferential direction.

[0064] It is understood that in some other embodiments, a pipe can be used to connect the first rice milling port 120 and the second rice milling port 220 to each other, and by setting a valve on the pipe, the first rice milling port 120 and the second rice milling port 220 can flow into the rice milling channel 310 through different paths by switching the valve, thereby realizing the switching of the first rice milling port 120 and the second rice milling port 220 between the upstream and downstream of the rice milling channel 310.

[0065] In some specific embodiments, after the rotation direction of the rice milling screw 320 changes, it is also necessary to adjust the feeding and discharging relationship of the first rice milling port 120 and the second rice milling port 220. Specifically, as can be seen from the above, when the rice milling structure switches from the first working state to the second working state, the first rice milling port 120 will switch from discharging to feeding, while the second rice milling port 220 will switch from feeding to discharging.

[0066] To achieve the adjustment between the above-mentioned feeding and discharging relationship, the rice milling structure also includes a rotating component 400, which is connected to the first hopper 100 and the second hopper 200 and can controllably change the position of the first hopper 100 and the second hopper 200 relative to the rice milling component 300.

[0067] When the rice milling structure is in its first working state, the first hopper 100 is located above the rice milling assembly 300, and the second hopper 200 is located below the rice milling assembly 300. At this time, the raw materials in the first hopper 100 will fall into the rice milling channel 310 under the action of gravity. After being milled by the rice milling screw 320, the raw materials will also fall into the second hopper 200 for temporary storage under the action of gravity.

[0068] When the rice milling structure is in the second working state, the second hopper 200 is located above the rice milling assembly 300, and the first hopper 100 is located below the rice milling assembly 300. At this time, the raw materials temporarily stored in the second hopper 200 will fall into the rice milling channel 310 under the action of gravity. After being milled by the rice milling screw 320, the raw materials will also fall into the first hopper 100 under the action of gravity.

[0069] In other words, when the rice milling structure switches from the first working state to the second working state, the positions of the first hopper 100 and the second hopper 200 are reversed. Then, the rice milling screw 320 is controlled to rotate in the opposite direction, guiding the paddy rice in the second hopper 200 to move in the opposite direction into the first hopper 100 for a second whitening process. Subsequently, the rice milling screw 320 is stopped again, and the positions of the first hopper 100 and the second hopper 200 are reversed again by the rotating component 400, and the above process is repeated. In this way, the cyclic whitening process of paddy rice can be realized.

[0070] Specifically, in some embodiments, see [link to relevant documentation]. Figure 5 and Figure 6 To achieve the change in position between the first hopper 100 and the second hopper 200, the rice milling assembly 300 also includes a rice milling shell 330. A rice milling channel 310 is formed within the rice milling shell 330, and its two opposite ends are connected to the first hopper 100 and the second hopper 200, respectively. Furthermore, a rotating assembly 400 is drively connected to the rice milling shell 330, and the rotating assembly 400 can drive the rice milling shell 330 to rotate around its own axis. During the rotation of the rice milling shell 330 around its own axis, the rice milling structure switches between a first working state and a second working state.

[0071] Specifically, when the rice milling structure is in the first working state, the first hopper 100 is located above the rice milling shell 330, and the second hopper 200 is located below the rice milling shell 330. When the rice milling shell 330 rotates 180° around its own axis under the action of the rotating component 400, the first hopper 100 will be located below the rice milling shell 330, and the second hopper 200 will be located above the rice milling shell 330. At this time, the rice milling screw 320 is controlled to switch from the movement in the first circumferential direction to the movement in the second circumferential direction, and the rice milling structure can complete the switch from the first working state to the second working state.

[0072] When the rice milling structure switches from the second working state to the first working state, the rice milling shell 330 can continue to rotate 180° around its own axis, or rotate 180° in the opposite direction. Then, the rice milling screw 320 is controlled to switch from the movement in the second circumferential direction to the movement in the first circumferential direction, and the rice milling structure can complete the switch from the second working state to the first working state.

[0073] It is understandable that since the rice milling screw 320 is installed inside the rice milling shell 330, the rotation of the rice milling shell 330 around its own axis will not affect the rice milling screw 320. The change in the rotation direction of the rice milling screw 320 is achieved through the rice milling motor 340.

[0074] In some specific embodiments, the rotating assembly 400 includes a rotation drive 410, a drive gear 420, and a drive gear ring 430. The rotation drive 410 can be fixed to an external structure, such as the housing of a household rice milling machine, while the drive gear ring 430 is disposed on the rice milling housing 330 and is arranged circumferentially around the rice milling housing 330. The drive gear 420 is connected to the rotation drive 410 in a transmission manner, and the drive gear 420 and the drive gear ring 430 mesh with each other.

[0075] Thus, when the rotating drive component 410 drives the drive gear 420 to rotate, the drive gear 420 will drive the drive gear ring 430 to rotate, thereby driving the rice milling shell 330 to rotate through the drive gear ring 430, and finally driving the first hopper 100 and the second hopper 200 to reverse up and down through the rice milling shell 330.

[0076] Furthermore, to improve the stability of the rice milling shell 330 during rotation, the rotating assembly 400 also includes a transmission rod 440. The rotation drive component 410 is connected to the transmission rod 440. Multiple drive gears 420 are included, and all drive gears 420 are spaced apart on the transmission rod 440. Multiple drive gear rings 430 are included, and all drive gear rings 430 are spaced apart along the axial direction of the rice milling shell 330, with each drive gear ring 430 meshing with one of the drive gears 420.

[0077] Furthermore, each of the rotating drive component 410 and the transmission rod 440 comprises two units. Each rotating drive component 410 is connected to one of the transmission rods 440. The two rotating drive components 410 and the two transmission rods 440 are located on opposite sides of the rice milling shell 330, and each transmission rod 440 is equipped with multiple drive gears 420, each drive gear 420 meshing with one of the drive gear rings 430. In this way, the two rotating drive components 410 jointly drive the rice milling shell 330, the first shell, and the second shell to rotate together, improving transmission efficiency.

[0078] Thus, the two rotating drive components 410 rotate in the same direction, driving the transmission rod 440, drive gear 420, and drive gear ring 430 to rotate in the same direction. Through the two drive gear rings 430 fitted around the rice milling shell 330, the integrated structure consisting of the rice milling shell 330, the first hopper 100, and the second hopper 200 is driven to rotate. In this way, the two rotating drive components 410 can start simultaneously, causing the integrated structure consisting of the rice milling shell 330, the first hopper 100, and the second hopper 200 to rotate, which, in conjunction with the reverse rotation of the rice milling screw 320, realizes the cyclic whitening process.

[0079] Optionally, the rotation drive 410 is a motor, and each transmission rod 440 is provided with two drive gears 420. The two drive gears 420 are respectively located at both ends of the transmission rod 440. There are also two drive gear rings 430, which are respectively located close to the first housing and the second housing, so that the power of the two rotation drive components 410 can be evenly transmitted to the rice milling housing 330 through the two drive gears 420 and the drive gear rings 430, so that the rice milling housing 330 can stably drive the first housing and the second housing to rotate together.

[0080] Specifically, in some embodiments, see [link to relevant documentation]. Figure 8 and Figure 9 To enable power transmission between the drive gear 420 and the rice milling shell 330, a slot 450 is provided on the inner wall of the drive gear ring 430, extending through the axis of the rice milling shell 330. A insertion part 360 is provided on the rice milling shell 330, which passes through the slot 450. Thus, as the drive gear 420 rotates, it drives the rice milling shell 330 to rotate along with it through the engagement of the slot 450 and the insertion part 360, ultimately causing the first and second shells to rotate together.

[0081] In some embodiments of this application, in order to discharge impurities such as rice husks generated during the rice milling process, the rice milling shell 330 is also provided with sieve holes 350. The rice milling structure also includes a collecting member 500, which is located below the sieve holes 350 when the rice milling structure is in operation. Thus, during the rice milling process in the rice milling channel 310, when the rice is milled by the rice milling screw 320, the rice grains separate from the rice husks. The rice grains remain in the rice milling channel 310 and continue to be milled by the rice milling screw 320, while the rice husks leave the rice milling channel 310 through the sieve holes 350 and eventually fall into the collecting member 500 below, where they are collected for convenient processing.

[0082] Furthermore, in order to avoid the collector 500, the surfaces of the first hopper 100 and the second hopper 200 facing the collector 500 are made into planes to avoid interference between the first hopper 100 and the second hopper 200 and the collector 500 during rotation.

[0083] In some embodiments of this application, in order to facilitate the user to add or remove materials from the first hopper 100, the first hopper 100 is also provided with a first material port 150 that connects the first hopper 100. The first material port 150 can be opened or closed in a controlled manner so that the user can add materials to the first material chamber 110 by opening the first material port 150, and close the first material port 150 after the addition is completed, so that the raw materials will not leak out from the first material port 150 during the rotation of the first hopper 100 by the rotating component 400.

[0084] Furthermore, when the rice milling structure is in the first and second working states, the first feed inlet 150 and the first rice milling inlet 120 are both located at opposite ends of the first hopper 100 in the direction of gravity. Thus, when the rice milling structure is in the first working state, the first feed inlet 150 is located at the top of the first hopper 100, and can be used to feed raw materials into the first feed chamber 110. When the rice milling structure is in the second working state, the first feed inlet 150 is located at the bottom of the first hopper 100. Opening the first feed inlet 150 allows the milled rice grains in the first feed chamber 110 to leave under gravity, thereby discharging the milled rice grains.

[0085] In some embodiments of this application, a second feed inlet 250 communicating with the second feed chamber 210 may also be provided on the second feed hopper 200. The second feed inlet 250 can be opened or closed in a controlled manner. When the rice milling structure is in the first working state or the second working state, refer to Figure 4 and Figure 7 The second feed inlet 250 and the second rice milling inlet 220 are located at opposite ends of the second hopper 200 in the direction of gravity. Similar to the first hopper 100, the second feed inlet 250 can also be provided on the second hopper 200, and the feeding or discharging of the second hopper 200 can be achieved through the second feed inlet 250.

[0086] Understandably, depending on actual usage requirements, either the first feed inlet 150 or the second feed inlet 250 can be selected on the first hopper 100 or the second hopper 200. In other embodiments, the first feed inlet 150 can be set on the first hopper 100 and the second feed inlet 250 can be set on the second hopper 200 simultaneously. One of the first feed inlet 150 and the second feed inlet 250 is mainly used for feeding, and the other is mainly used for discharging. When the rice milling structure is working, the first feed inlet 150 and the second feed inlet 250 are in a closed state, so that the first feed chamber 110, the rice milling channel 310 and the second feed chamber 210 all constitute a closed space in which the rice grains continuously contact and move with the screw, and perform multiple cycles of milling. After the milling is finished, the first feed inlet 150 or the second feed inlet 250 can be opened to obtain rice grains.

[0087] In some specific embodiments, the first hopper 100 includes a first hopper body 130 and a first cover plate 140. The first hopper body 130 is provided with a first feed inlet 150, a first feed chamber 110 and a first rice milling inlet 120. The first cover plate 140 is detachably mounted on the first hopper body 130 and is used to open and close the first feed inlet 150. The first cover plate 140 can be fixed on the first hopper body 130 by means of snaps or threads to close the first feed inlet 150.

[0088] Furthermore, the second hopper 200 may also include a second hopper body 230 and a second cover plate 240. The second hopper body 230 is provided with a second feed inlet 250, a second feed chamber 210 and a second rice milling inlet 220. The second cover plate 240 is detachably mounted on the second hopper body 230 and is used to open and close the second feed inlet 250. The second cover plate 240 can be fixed on the second hopper body 230 by means of snap-fit ​​or interference fit to close the second feed inlet 250.

[0089] It is understood that in some other embodiments, the connection between the first hopper 100 and the rice milling assembly 300 can be made detachable. After detachment, the first hopper 100 can directly feed raw materials and discharge rice grains through the first rice milling port 120. The same applies to the second hopper 200.

[0090] The aforementioned household rice milling machine can repeatedly mill paddy rice simply by switching the working state of the milling structure. All milling processes occur within the same milling channel 310, significantly reducing its size compared to multi-stage milling equipment. This makes it particularly suitable for home use. Designed for family use, this household rice milling machine allows for selective adjustment of the number of times the milling structure switches between the first and second working states to meet the different milling needs of various grains. This ensures ideal milling precision for different types of grains, thus providing broad applicability to meet the requirements of various grains, thereby saving energy and reducing operating costs.

[0091] The above-mentioned rice milling structure also has at least the following advantages:

[0092] 1. Controllable rice milling precision: The number of times the rice milling structure switches between the first and second working states can be controlled according to the number of whitening cycles set by the program, so as to achieve different rice milling precision and realize personalized whitening process according to rice type and user needs.

[0093] 2. Simple structure and small size: All whitening processes occur within the same rice milling channel 310, which greatly reduces the size compared to multi-stage whitening equipment.

[0094] 3. Uniform whitening effect: The above-mentioned rice milling structure can ensure that most rice grains undergo whitening a similar number of times. Since the first hopper 100 and the second hopper 200 are reversed, there will be no situation where the rice grains at the edge of the structure cannot undergo whitening multiple times. Moreover, most of the rice grains stuck in the gaps of the whitening chamber will loosen and fall off during the rotation of the first hopper 100 and the second hopper 200.

[0095] 4. Easy to operate: After the user selects the number of milling times according to the type of rice and the required precision, the rice milling structure can automatically run and output the rice grains required by the user.

[0096] 5. Low broken rice rate: Compared to traditional rice milling machines, the broken rice rate is lower. Traditional rice milling machines cannot ensure that most paddy grains are milled the same number of times, so they have to control the screw speed at a high speed to ensure the dehulling rate. This leads to an increased broken rice rate, and repeatedly milled dehulled rice grains also risk becoming broken. The above-mentioned rice milling structure can ensure that most rice grains are milled the same number of times. Therefore, the speed of the rice milling screw can be appropriately reduced to 320, and the dehulling rate can be ensured by increasing the number of milling times. This will significantly reduce the overall broken rice rate.

[0097] 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.

[0098] 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 structure, characterized in that, The rice milling structure includes: The first hopper (100) has a first material chamber (110) and a first rice milling opening (120) communicating with the first material chamber (110). The second hopper (200) has a second material chamber (210) and a second rice milling inlet (220) connected to the second material chamber (210). The rice milling assembly (300) has a rice milling channel (310), which is connected to the first rice milling opening (120) and the second rice milling opening (220) respectively; The rice milling structure can switch between a first working state and a second working state during operation. When the rice milling structure is in the first working state, the raw material in the first material chamber (110) can flow into the rice milling channel (310) through the first rice milling port (120). The first rice milling port (120) is located upstream of the rice milling channel (310), and the second rice milling port (220) is located downstream of the rice milling channel (310). The raw material in the rice milling channel (310) can flow into the second material chamber (210) through the second rice milling port (220). When the rice milling structure is in the second working state, the raw material in the second material chamber (210) can flow into the rice milling channel (310) through the second rice milling port (220). The second rice milling port (220) is located upstream of the rice milling channel (310), and the first rice milling port (120) is located downstream of the rice milling channel (310). The raw material in the rice milling channel (310) can flow into the first material chamber (110) through the first rice milling port (120).

2. The rice milling structure according to claim 1, characterized in that, The rice milling channel (310) is connected to the first rice milling opening (120) and the second rice milling opening (220) at opposite ends. The rice milling assembly (300) has a rice milling screw (320) disposed in the rice milling channel (310). The rice milling screw (320) can move controllably around its own axis in a first circumferential direction or a second circumferential direction, wherein the first circumferential direction and the second circumferential direction are opposite. When the rice milling structure is in the first working state, the rice milling screw (320) moves around the first circumferential direction. When the rice milling structure is in the second working state, the rice milling screw (320) moves around the second circumferential direction.

3. The rice milling structure according to claim 2, characterized in that, The rice milling structure also includes a rotating component (400), which is connected to the first hopper (100) and the second hopper (200) and can controllably change the position of the first hopper (100) and the second hopper (200) relative to the rice milling component (300); When the rice milling structure is in the first working state, the first hopper (100) is located above the rice milling assembly (300), and the second hopper (200) is located below the rice milling assembly (300); when the rice milling structure is in the second working state, the second hopper (200) is located above the rice milling assembly (300), and the first hopper (100) is located below the rice milling assembly (300).

4. The rice milling structure according to claim 3, characterized in that, The rice milling assembly (300) also includes a rice milling shell (330), in which the rice milling channel (310) is formed, and the two opposite ends of the rice milling shell (330) are respectively connected to the first hopper (100) and the second hopper (200); The rotating component (400) is connected to the rice milling shell (330) in a transmission connection, and the rotating component (400) can drive the rice milling shell (330) to rotate around its own axis.

5. The rice milling structure according to claim 4, characterized in that, The rotating assembly (400) includes a rotation drive (410), a drive gear (420), and a drive gear ring (430). The drive gear ring (430) is disposed on the rice milling shell (330) and is arranged circumferentially around the rice milling shell (330). The drive gear (420) is connected to the rotation drive (410) for transmission, and the drive gear (420) and the drive gear ring (430) mesh with each other.

6. The rice milling structure according to claim 5, characterized in that, The rotating assembly (400) further includes a transmission rod (440), the rotation drive (410) is connected to the transmission rod (440), and the drive gear (420) includes a plurality of gears, all of which are spaced apart on the transmission rod (440). The drive gear ring (430) includes a plurality of drive gear rings (430), all of which are spaced apart along the axial direction of the rice milling shell (330), and each drive gear ring (430) meshes with one of the drive gears (420).

7. The rice milling structure according to claim 6, characterized in that, The rotation drive (410) and the transmission rod (440) each include two, each of the rotation drive (410) is connected to one of the transmission rods (440), the two rotation drive (410) and the two transmission rods (440) are respectively located on opposite sides of the rice milling shell (330), and each of the transmission rods (440) is provided with a plurality of drive gears (420), each of the drive gears (420) meshing with one of the drive gear rings (430).

8. The rice milling structure according to claim 4, characterized in that, The rice milling shell (330) is also provided with a sieve hole (350), and the rice milling structure also includes a collecting component (500). When the rice milling structure is working, the collecting component (500) is located below the sieve hole (350).

9. The rice milling structure according to claim 1, characterized in that, The first hopper (100) is also provided with a first feed inlet (150) communicating with the first hopper (100). The first feed inlet (150) can be opened or closed in a controlled manner. When the rice milling structure is in the first working state and the second working state, the first feed inlet (150) and the first rice milling inlet (120) are respectively located at both ends of the first hopper (100) in the direction of gravity.

10. The rice milling structure according to claim 1, characterized in that, The second hopper (200) is also provided with a second feed inlet (250) that communicates with the second feed chamber (210). The second feed inlet (250) can be opened or closed in a controlled manner. When the rice milling structure is in the first working state or the second working state, the second feed inlet (250) and the second rice milling inlet (220) are located at the two ends of the second hopper (200) in the direction of gravity, respectively.

11. A household rice milling machine, characterized in that, Includes the rice milling structure as described in any one of claims 1-10.

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