Rice washing mechanism and rice mill

Abstract

The application relates to a rice washing mechanism and a rice mill, and relates to the technical field of household rice mills. The rice washing mechanism comprises a water circulation assembly and a cleaning assembly; the water circulation assembly comprises a circulating water pump; the cleaning assembly comprises a rice collecting box, a water spraying impeller, a drainage switch and a first filter piece; the rice collecting box is provided with a cleaning cavity; a water overflow port and a first drainage port are arranged through the cavity wall of the cleaning cavity; the water spraying impeller is rotationally arranged on the cavity bottom wall of the cleaning cavity and is connected with the circulating water pump; the water spraying impeller comprises a plurality of blades; the surface of the blades on the same side of the self rotation axis direction is provided with a water spraying hole; the drainage switch and the first filter piece are both arranged at the first drainage port. The application can improve the low cleaning efficiency problem of the existing household rice mill.

Description

Technical Field

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

[0002] The primary function of traditional household rice milling machines is to dehull paddy rice and grind it into white rice. However, after the milling process, the surface of the rice is usually covered with a large amount of bran, dust, and fine husk fragments. These impurities not only affect the sensory quality of the rice but may also carry dust or microorganisms, impacting health. After using a traditional household rice milling machine, users must transfer the milled rice to a separate container and manually add water, stir, rinse, and drain. This process is cumbersome, wasteful of water, incompletely removes impurities, and results in rice loss.

[0003] To overcome the above-mentioned shortcomings, some household rice milling machines are equipped with a washing device that can automatically clean rice, thereby simplifying user operation and improving user experience. However, they still have the problem of low cleaning efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a rice washing mechanism and rice milling machine to address the problem of low cleaning efficiency in existing household rice milling machines.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a rice washing mechanism, comprising:

[0007] Water circulation components, including a circulating water pump; and

[0008] The cleaning assembly includes a rice collection box, a water spray impeller, a drain switch, and a first filter. The rice collection box has a cleaning chamber for holding rice, and the chamber wall has an overflow outlet and a first drain outlet. The water spray impeller is rotatably mounted on the bottom wall of the cleaning chamber and connected to a circulating water pump. The water spray impeller includes several blades, and the surface of each blade on the same side of its rotation axis has a water spray hole. The drain switch and the first filter are both located at the first drain outlet.

[0009] In one embodiment of the first aspect, the water circulation assembly further includes a water circulation chamber and a second filter element, the second filter element being disposed on the inner wall of the water circulation chamber and separating the inner cavity of the water circulation chamber to form a clear water chamber and a return water chamber; the circulating water pump is disposed in the clear water chamber; the overflow port is connected to the return water chamber so that the water overflowing through the overflow port flows back to the clear water chamber through the return water chamber.

[0010] In one embodiment of the first aspect, the rice collection box is stacked on the water circulation chamber, and the water spray impeller is aligned with the circulating water pump.

[0011] In one embodiment of the first aspect, the rice collection box is provided with a drainage channel, which is located on the side of the overflow outlet away from the washing chamber and is connected to the overflow outlet; the bottom end of the drainage channel and the top end of the return water chamber are both open, and at least part of the return water chamber is aligned with the drainage channel.

[0012] In one embodiment of the first aspect, the cleaning assembly further includes an overflow component disposed on the inner wall of the rice collection box, the height of the overflow component being less than the height of the rice collection box, and an overflow outlet being formed above the overflow component;

[0013] The drainage channel is a drainage chamber, and the washing chamber and the drainage chamber are formed by the overflow component separating the inner cavity of the rice collection box.

[0014] In one embodiment of the first aspect, the height of the overflow component is 75mm-95mm.

[0015] In one embodiment of the first aspect, the first drain outlet is disposed on the overflow member and communicates with the drain cavity.

[0016] In one embodiment of the first aspect, the drain switch includes a slider slidably disposed on the overflow member, and the first drain outlet is located on the sliding path of the slider.

[0017] In one embodiment of the first aspect, the inner wall of the water circulation chamber is provided with a pair of first retaining members, and the wall of the drainage chamber is provided with a second retaining member; the lower part of the second filter element is inserted between the two first retaining members, and the upper part is inserted between the overflow element and the second retaining member.

[0018] In one embodiment of the first aspect, the top surface of the water circulation chamber is provided with a first magnetic surface, and the bottom surface of the rice collection box is provided with a second magnetic surface, wherein the first magnetic surface and the second magnetic surface are magnetically attracted to each other.

[0019] In one embodiment of the first aspect, the outlet of the circulating water pump is connected to a first magnetic connector, the bottom end of the water spray impeller passes through the bottom wall of the cleaning chamber, and is provided with a second magnetic connector, the first magnetic connector and the second magnetic connector being magnetically attracted to each other.

[0020] In one embodiment of the first aspect, the second filter element includes a coarse filter layer, a medium filter layer, and a fine filter layer stacked sequentially along the direction from the return water chamber to the clear water chamber.

[0021] In one embodiment of the first aspect, a second drain outlet is provided through the wall of the water chamber, and a sealing element is detachably embedded in the second drain outlet.

[0022] In one embodiment of the first aspect, the spray hole includes a first spray hole, a second spray hole and a third spray hole, wherein the first spray hole and the second spray hole are both disposed on the side of the blade near the center of the spray impeller, and the first spray hole is located below the second spray hole, and the third spray hole is located in the middle of the blade.

[0023] The first spray hole is used to rinse the rice at the bottom of the washing chamber, the second spray hole is used to roll the water flow at the bottom of the washing chamber upward, and the third spray hole is used to drive the water in the washing chamber to form a horizontal swirling flow.

[0024] In one embodiment of the first aspect, the number of blades is three, and the three blades are evenly distributed along the circumference of the water jet impeller.

[0025] Secondly, this application also provides a rice milling machine, including a rice milling mechanism and a rice washing mechanism as described in any of the above embodiments. The rice milling mechanism is provided with a rice discharge port, which is aligned with the washing chamber.

[0026] Compared to related technologies, the advantages of this application are as follows: During use, the rice milled by the rice milling mechanism falls into the washing chamber through the rice discharge port. A circulating water pump draws clean water and sprays it from the spray nozzles on the blades of the spray impeller, injecting the water into the washing chamber and gradually submerging the rice. Simultaneously, the blades are driven by the reaction force of the sprayed water, causing the entire spray impeller to rotate, thus agitating the water and rice. Under the action of the water vortex formed by the spray impeller and centrifugal force, the rice and impurities mixed within it are efficiently separated. As the water continues to be injected, the separated impurities, being less dense, float on the surface, while the denser rice falls to the bottom of the washing chamber, completing the separation. When the liquid level in the washing chamber exceeds the height of the overflow port, the water carrying the impurities overflows from the overflow port. Therefore, the above-mentioned rice washing mechanism can automatically wash rice with higher efficiency. After the washing process is complete, the circulating water pump stops working, and the drain switch opens the first drain outlet, allowing the water in the washing chamber to be discharged through the first drain outlet. The rice in the washing chamber is blocked by the first filter element, thus draining the rice for direct use by the user. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the overall structure of the rice washing mechanism in some embodiments of this application;

[0029] Figure 2 This is a schematic diagram of an explosion of the rice washing mechanism in some embodiments of this application. Figure 1 ;

[0030] Figure 3 This is a schematic diagram of an explosion of the rice washing mechanism in some embodiments of this application. Figure 2 ;

[0031] Figure 4 This is a schematic diagram of the water jet impeller in some embodiments of this application;

[0032] Figure 5 This is a top view of the cleaning components in some embodiments of this application;

[0033] Figure 6 This is a cross-sectional schematic diagram of the cleaning component in some embodiments of this application;

[0034] Figure 7 This is a cross-sectional schematic diagram of the rice washing mechanism in some embodiments of this application;

[0035] Figure 8 This is a schematic diagram of the structure of the water circulation component in some embodiments of this application;

[0036] Figure 9 This is a bottom view of the cleaning component in some embodiments of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the circulating water pump in some embodiments of this application;

[0038] Figure 11 This is a schematic diagram of the structure of the cleaning component in some embodiments of this application. Figure 1 ;

[0039] Figure 12 This is a schematic diagram of the structure of the cleaning component in some embodiments of this application. Figure 2 ;

[0040] Figure 13 This is a half-sectional view of the cleaning component in some embodiments of this application;

[0041] Figure 14This is a schematic diagram of the structure of the second filter element in some embodiments of this application;

[0042] Figure 15 This is a schematic diagram of the overall structure of the rice milling machine in some embodiments of this application;

[0043] Figure 16 This is a schematic diagram of the internal structure of the rice milling machine in some embodiments of this application;

[0044] Figure 17 This is a cross-sectional schematic diagram of a rice milling machine in some embodiments of this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10. Rice washing mechanism; 20. Rice milling mechanism; 21. Rice discharge port; 22. Bran discharge port; 23. Rice recycling port; 30. Storage bin; 31. First discharge port; 40. Discharge bin; 41. Second discharge port; 50. Motor assembly; 60. Bran collection box;

[0047] 100. Water circulation assembly; 110. Water circulation chamber; 111. Clear water chamber; 112. Return water chamber; 113. First magnetic suction surface; 114. First handle; 115. Second drain outlet; 116. Sealing component; 117. First retaining component; 120. Second filter element; 121. Coarse filter layer; 122. Medium filter layer; 123. Fine filter layer; 130. Circulating water pump; 131. First magnetic connector; 132. Spray pipe; 133. Suction pipe; 134. Water pump mounting base; 135. Mounting base fixing knob; 20 0. Cleaning component; 210. Rice collection box; 211. Cleaning chamber; 212. Second magnetic suction surface; 213. Second handle; 214. Drainage channel; 215. Second retaining element; 220. Water spray impeller; 221. Blade; 222. Water spray hole; 222a. First water spray hole; 222b. Second water spray hole; 222c. Third water spray hole; 223. Second magnetic suction connector; 230. Drain switch; 240. First filter element; 250. Overflow element; 251. Overflow outlet; 252. First drain outlet. Detailed Implementation

[0048] 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.

[0049] 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.

[0050] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. 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, features defined with "first" or "second" can 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, etc., unless otherwise explicitly specified.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Please refer to the following: Figure 1 , Figure 2 and Figure 3 The embodiments of this application provide a rice washing mechanism 10, including a water circulation component 100 and a washing component 200.

[0055] The water circulation component 100 includes a circulating water pump 130.

[0056] In addition, the washing assembly 200 includes a rice collection box 210, a water spray impeller 220, a drain switch 230, and a first filter element 240. The rice collection box 210 has a washing chamber 211 for holding rice, and an overflow port 251 and a first drain port 252 are provided through the chamber wall of the washing chamber 211. The water spray impeller 220 is rotatably mounted on the bottom wall of the washing chamber 211 and connected to the circulating water pump 130. The water spray impeller 220 includes several blades 221, and each blade 221 has a spray hole 222 on the surface of the same side around its own rotation axis. The drain switch 230 and the first filter element 240 are both located at the first drain port 252.

[0057] In operation, the rice milled by the rice milling mechanism 20 falls into the washing chamber 211 through the rice discharge port 21. The circulating water pump 130 draws clean water and sprays it from the spray holes 222 on the blades 221 of the spray impeller 220, injecting the water into the washing chamber 211 and gradually submerging the rice. Simultaneously, the blades 221 are driven by the reaction force of the sprayed water, causing the entire spray impeller 220 to rotate, thus agitating the water and rice. Under the influence of the water vortex formed by the spray impeller 220 and centrifugal force, the rice and impurities mixed within it are efficiently separated. As water continues to be injected, the separated impurities, being less dense, float on the surface, while the denser rice falls to the bottom of the washing chamber 211, completing the separation. When the liquid level in the washing chamber 211 exceeds the height of the overflow port 251, the water carrying the impurities overflows from the overflow port 251. Therefore, the rice washing mechanism 10 can automatically wash rice with higher efficiency.

[0058] After cleaning, the circulating water pump 130 stops working, and the drain switch 230 opens the first drain port 252, allowing the water in the cleaning chamber 211 to be discharged through the first drain port 252. The rice in the cleaning chamber 211 is intercepted by the first filter element 240, thus draining the rice for direct use by the user.

[0059] Please refer to the following: Figure 4 , Figure 5 and Figure 6 In some embodiments, the number of blades 221 is three, and the three blades 221 are evenly distributed around the impeller 220.

[0060] At this time, the water spray impeller 220 has advantages such as small torque fluctuation, smooth rotation, while taking into account strength and rigidity, simple mold, easy demolding, ensuring cleaning effect, and reducing rice damage.

[0061] For example, the blade 221 is vertically arranged and extends in a direction perpendicular to the rotation axis of the water spray impeller 220, and the height of the blade 221 gradually decreases in a direction away from the rotation axis of the water spray impeller 220.

[0062] Understandably, the spray holes 222 on each blade 221 are located on the same side of the blade 221 along the circumference of the spray impeller 220.

[0063] In some embodiments, the spray hole 222 includes a first spray hole 222a, a second spray hole 222b, and a third spray hole 222c. The first spray hole 222a and the second spray hole 222b are both disposed on the side of the blade 221 near the center of the water spray impeller 220, that is, at the root of the blade 221, and the first spray hole 222a is located below the second spray hole 222b, while the third spray hole 222c is located in the middle of the blade 221.

[0064] The first spray nozzle 222a is used to rinse the rice at the bottom of the washing chamber 211, breaking the adhesion between the rice and the bran, thus achieving a "peel-off" cleaning. The second spray nozzle 222b is used to swirl the water flow at the bottom of the washing chamber 211 upwards, forming a vertical convection to prevent the rice from accumulating at the bottom of the washing chamber 211. The third spray nozzle 222c is used to drive the water in the washing chamber 211 to form a horizontal swirling flow, providing a horizontal velocity component to the water flow.

[0065] Thus, the first spray hole 222a, the second spray hole 222b, and the third spray hole 222c work together. The first spray hole 222a and the second spray hole 222b form vertical convection, while the third spray hole 222c forms horizontal swirling flow. The vertical convection and the horizontal swirling flow together constitute a three-dimensional circulation, causing the rice to tumble within the washing chamber 211 and come into contact with the water flow from all directions.

[0066] For example, the diameters of the first spray hole 222a and the second spray hole 222b are 1.2mm-1.4mm. The first spray hole 222a is approximately 2mm away from the base of the impeller 220, and the second spray hole 222b is approximately 6mm away from the base of the impeller 220. The vertical distance between the first spray hole 222a and the second spray hole 222b is 4mm. Furthermore, the diameter of the third spray hole 222c is 1mm-1.2mm, and it is approximately 8mm away from the second spray hole 222b, and 10mm-12mm away from the outer edge of the blade 221.

[0067] In summary, through the water spray impeller 220, the rice washing mechanism 10 can achieve both water delivery and agitation of the water flow in the washing chamber 211 with only one power source, namely the circulating water pump 130, thereby achieving efficient separation of rice and impurities by utilizing centrifugal force.

[0068] Please refer to it again. Figure 1 , Figure 2 and Figure 3 In some embodiments, the water circulation assembly 100 further includes a water circulation chamber 110 and a second filter element 120. The second filter element 120 is disposed on the inner wall of the water circulation chamber 110 and divides the inner cavity of the water circulation chamber 110 to form a clear water chamber 111 and a return water chamber 112.

[0069] Correspondingly, the circulating water pump 130 is installed in the clear water chamber 111.

[0070] In addition, the overflow outlet 251 is connected to the return water chamber 112 so that the water overflowing through the overflow outlet 251 flows back to the clear water chamber 111 through the return water chamber 112.

[0071] In operation, the circulating water pump 130 draws water from the clear water chamber 111 and injects it into the washing chamber 211 via the spray impeller 220. When the liquid level in the washing chamber 211 exceeds the height of the overflow port 251, the water carrying impurities overflows from the overflow port 251 and enters the return water chamber 112. Subsequently, the impurities are blocked by the second filter element 120, and the water flows through the second filter element 120 and enters the clear water chamber 111, where it is again drawn away by the circulating water pump 130 and injected into the washing chamber 211, thus achieving repeated washing of the rice. Therefore, the rice washing mechanism 10 can continuously and repeatedly wash rice using a small amount of water, further improving washing efficiency and significantly reducing water consumption.

[0072] It should be noted that the water in the clear water chamber 111 can be pre-filled by the user, or a water storage tank can be added to the rice washing mechanism 10, and water can be supplied to the clear water chamber 111 through the water storage tank. Understandably, the water storage tank can hold enough water for multiple rice washes at once. When the water level in the storage tank is low, for example, when the water level mark in the storage tank is below a certain height, the user is reminded to add water to the tank.

[0073] Please combine Figure 7 In some embodiments, the rice collection box 210 is stacked on the water circulation chamber 110, and the water spray impeller 220 is aligned with the circulating water pump 130.

[0074] Understandably, with the water spray impeller 220 rotating on the bottom wall of the washing chamber 211, the rice collection box 210 is stacked on the water circulation chamber 110, and the water spray impeller 220 is aligned with the circulating water pump 130. This facilitates the connection between the water spray impeller 220 and the circulating water pump 130, eliminating the need for additional space below the rice collection box 210. This makes the entire rice washing mechanism 10 more compact and smaller in size.

[0075] In other embodiments, the rice collection box 210 and the water circulation chamber 110 may also be arranged side by side. A pipe is installed below the rice collection box 210 to connect the water spray impeller 220 to the circulating water pump 130.

[0076] Please refer to the following: Figure 8 and Figure 9 Furthermore, in some embodiments, the top surface of the water circulation chamber 110 is provided with a first magnetic surface 113, and the bottom surface of the rice collection box 210 is provided with a second magnetic surface 212. The first magnetic surface 113 and the second magnetic surface 212 are magnetically attracted, so that the water circulation chamber 110 and the rice collection box 210 can be stably stacked together.

[0077] In addition, after cleaning, the user can overcome the magnetic force between the first magnetic surface 113 and the second magnetic surface 212 to separate the rice collection box 210 from the water circulation chamber 110, and then take out the rice collection box 210 for easy rice retrieval.

[0078] For example, a magnetic strip is provided around the outer periphery of the top surface of the water circulation chamber 110, forming a first magnetic surface 113. Similarly, a magnetic strip is provided around the outer periphery of the bottom surface of the rice collection box 210, forming a second magnetic surface 212.

[0079] In this embodiment, one sidewall of the water circulation chamber 110 is recessed inward to form a first handle 114 that can be held by the user so that the user can pull the water circulation chamber 110 and the rice collection box 210 out of the rice milling machine.

[0080] In addition, the opposite side walls of the rice collection box 210 are recessed inward to form a second handle 213 that can be held by the user so that the user can remove the rice collection box 210 from the water circulation chamber 110.

[0081] Please refer to the following: Figure 4 and Figure 10Furthermore, in some embodiments, the outlet of the circulating water pump 130 is connected to a first magnetic connector 131. The bottom end of the spray impeller 220 passes through the bottom wall of the cleaning chamber 211 and is provided with a second magnetic connector 223. The first magnetic connector 131 and the second magnetic connector 223 are magnetically attracted to each other.

[0082] When the water circulation chamber 110 and the rice collection box 210 are stacked, the first magnetic connector 131 and the second magnetic connector 223 are magnetically attracted, and the circulating water pump 130 and the water spray impeller 220 are connected through the first magnetic connector 131 and the second magnetic connector 223, so that water can be sprayed and rice can be washed normally.

[0083] When the user separates the rice collection box 210 from the water circulation chamber 110, the first magnetic connector 131 and the second magnetic connector 223 are disconnected, and the water spray impeller 220 is taken out along with the rice collection box 210.

[0084] For example, the bottom end of the water spray impeller 220 is provided with two annular protrusions. One annular protrusion is located inside the cleaning chamber 211, and the other annular protrusion is located outside the cleaning chamber 211, so that the water spray impeller 220 is rotatably mounted on the bottom wall of the cleaning chamber 211.

[0085] In this embodiment, the top of the clean water chamber 111 is open. When the water circulation chamber 110 and the rice collection box 210 are stacked, the bottom end of the water spray impeller 220 passes through the bottom wall of the cleaning chamber 211 and enters the clean water chamber 111.

[0086] In addition, the outlet of the circulating water pump 130 is provided with a vertical spray pipe 132. The bottom end of the spray pipe 132 is threaded to the circulating water pump 130, and the top end is provided with a first magnetic connector 131. The inlet of the circulating water pump 130 is provided with a vertical suction pipe 133. The top end of the suction pipe 133 is threaded to the circulating water pump 130, and the bottom end extends to the bottom of the clear water chamber 111.

[0087] In other embodiments of this application, the top of the water cavity 111 may also be a closed structure. Accordingly, the top of the water spray pipe 132 passes through the top wall of the water cavity 111 and is connected to the first magnetic connector 131.

[0088] Please refer to the following: Figure 3 and Figure 10 In some embodiments, the circulating water pump 130 is mounted and fixed to the side wall of the clear water chamber 111 via a pump mounting base 134 and a mounting base fixing knob 135. The pump mounting base 134 is located inside the clear water chamber 111 and is in close contact with the side wall of the clear water chamber 111. The mounting base fixing knob 135 extends from the outside of the water circulation chamber 110 into the side wall of the clear water chamber 111 and is threadedly connected to the pump mounting base 134. Furthermore, the circulating water pump 130 is threadedly connected to the pump mounting base 134.

[0089] Please refer to it again. Figure 3 In some embodiments, a second drain outlet 115 is provided through the cavity wall of the water cavity 111, and a sealing member 116 is detachably embedded in the second drain outlet 115.

[0090] During the rice washing process, the sealing component 116 is embedded in the second drain outlet 115, sealing the second drain outlet 115. After washing, the user can remove the sealing component 116 and drain the water in the clean water chamber 111 through the second drain outlet 115.

[0091] For example, the sealing element 116 is a drain knob that is threadedly connected to the inner wall of the second drain outlet 115.

[0092] Please refer to it again. Figure 7 In some embodiments, the rice collection box 210 is provided with a drainage channel 214. The drainage channel 214 is located on the side of the overflow outlet 251 away from the washing chamber 211 and is connected to the overflow outlet 251. The bottom end of the drainage channel 214 and the top end of the return water chamber 112 are both open, and at least part of the return water chamber 112 is aligned with the drainage channel 214.

[0093] At this time, the overflow outlet 251 is connected to the return water chamber 112 through the drainage channel 214.

[0094] When the liquid level in the cleaning chamber 211 exceeds the height of the overflow port 251, the water carrying impurities overflows from the overflow port 251 and enters the drain channel 214, then flows downward along the drain channel 214. Since the bottom end of the drain channel 214 and the top end of the return water chamber 112 are both open, and at least part of the return water chamber 112 is aligned with the drain channel 214, the water can flow downward along the drain channel 214 into the return water chamber 112.

[0095] Specifically, when the water circulation chamber 110 and the rice collection box 210 are stacked, the clear water chamber 111 is located below the washing chamber 211, and the return water chamber 112 is located below the drain channel 214. The circulating water pump 130 injects water from the clear water chamber 111 into the washing chamber 211 to wash the rice; the water in the washing chamber 211 overflows from the overflow port 251 into the drain channel 214, carrying away the washed impurities from the washing chamber 211; the water in the drain channel 214 flows downward into the return water chamber 112 under the action of gravity; the water in the return water chamber 112 passes through the second filter element 120 to separate the water flow from the impurities, and then enters the clear water chamber 111 for reuse.

[0096] With the above layout, the rice washing mechanism 10 is driven by only one power source, the circulating water pump 130, to circulate water and complete the processes of washing rice, separating impurities, and regenerating water, thus achieving a simplified structure and a more complex function.

[0097] In other embodiments, the overflow outlet 251 may also be connected to the water circulation chamber 110 via a pipe and communicate with the return water chamber 112.

[0098] In this embodiment, the cleaning assembly 200 further includes an overflow component 250. The overflow component 250 is disposed on the inner wall of the rice collection box 210, the height of the overflow component 250 is less than the height of the rice collection box 210, and an overflow outlet 251 is formed above the overflow component 250.

[0099] In addition, the drainage channel 214 is a drainage chamber, and the washing chamber 211 and the drainage chamber are formed by the overflow member 250 separating the inner cavity of the rice collection box 210.

[0100] When the liquid level in the cleaning chamber 211 is higher than that in the overflow component 250, the water carrying impurities overflows the overflow component 250, flows into the drain chamber above the overflow component 250, and then flows downward under the action of gravity, flowing into the return water chamber 112 from the bottom of the drain chamber.

[0101] In other embodiments of this application, the drainage channel 214 may also be a drainage groove formed on the outer wall of the rice collection box 210. Alternatively, two opposing flow guiding components may be provided on the outer wall of the rice collection box 210, with the drainage channel 214 formed between the two flow guiding components.

[0102] Furthermore, in some embodiments, the height of the overflow component 250 is 75mm-95mm. That is, the height of the overflow component 250 is H, which satisfies 75mm≤H≤95mm.

[0103] Understandably, if the height of the overflow component 250 is too low, the water level will be insufficient to completely separate impurities such as rice bran and dust. If the height of the overflow component 250 is too high, the overflow time of impurities will be slower, the water circulation speed will be reduced, and insufficient water circulation supply may easily occur.

[0104] Therefore, the height of the overflow component 250 is set at 75mm-95mm, which can not only completely separate impurities but also ensure the normal circulation and supply of water.

[0105] Optionally, the height of the overflow component 250 can be 75mm, 80mm, 85mm, 90mm, 95mm or any value between 75mm and 95mm.

[0106] Please refer to the following: Figure 11 , Figure 12 and Figure 13 Furthermore, in some embodiments, the first drain outlet 252 is disposed on the overflow member 250 and communicates with the drain cavity.

[0107] After cleaning is completed, the circulating water pump 130 stops working, and the drain switch 230 opens the first drain port 252, allowing the water in the cleaning chamber 211 to be discharged into the drain chamber through the first drain port 252, and then flow into the return water chamber 112, so as to be discharged in a concentrated manner through the second drain port 115 on the water circulation chamber 110.

[0108] Understandably, the first filter element 240 is fixedly disposed on the overflow element 250 and covers the first drain outlet 252. Exemplarily, the first filter element 240 may be a filter screen.

[0109] In other embodiments, the first drain outlet 252 may also be located on the rice collection box 210. For example, the first drain outlet 252 may be disposed through the bottom wall of the washing chamber 211 and directly communicate with the clean water chamber 111. Alternatively, the first drain outlet 252 may be disposed on the side wall of the rice collection box 210 and communicate with the return water chamber 112 or the clean water chamber 111 via a pipe.

[0110] In some embodiments, the drain switch 230 includes a slider slidably disposed on the overflow member 250, and the first drain outlet 252 is located on the sliding path of the slider.

[0111] During the rice washing process, the sliding member can be slid to completely cover the first drain outlet 252, thus closing the first drain outlet 252 and preventing water from leaking from the washing chamber 211. After washing, the sliding member can be slid to partially cover the first drain outlet 252, or not cover the first drain outlet 252, thus opening the first drain outlet 252 and allowing water in the washing chamber 211 to drain out through the first drain outlet 252, draining the rice.

[0112] In use, the user can manually move the slider back and forth; alternatively, a magnet can be placed on the slider, and an electromagnet can be placed on the overflow component 250 or the rice collection box 210, so that the slider can be moved back and forth by changing the direction of the current in the electromagnet. This embodiment does not limit this.

[0113] Please refer to it again. Figure 7 Furthermore, in some embodiments, the inner wall of the water circulation chamber 110 is provided with a pair of first retaining members 117, and the wall of the drainage chamber is provided with a second retaining member 215. The lower part of the second filter element 120 is inserted between the two first retaining members 117, and the upper part is inserted between the overflow element 250 and the second retaining member 215.

[0114] As mentioned earlier, the bottom of the drain chamber is open, allowing the upper part of the second filter element 120 to be inserted into the drain chamber. The overflow component 250 and the second retaining component 215 then limit the upper part of the second filter element 120. Simultaneously, the inner wall of the water circulation chamber 110 is provided with pairs of first retaining components 117 to limit the lower part of the second filter element 120. This allows users to easily and quickly disassemble and assemble the second filter element 120 for cleaning, maintenance, or replacement.

[0115] In addition, the upper part of the second filter element 120 is inserted between the overflow element 250 and the second retaining element 215, which can make the connection between the water circulation chamber 110 and the rice collection box 210 more stable, and does not affect the user's ability to overcome the magnetic force between the first magnetic surface 113 and the second magnetic surface 212 to separate the rice collection box 210 from the water circulation chamber 110.

[0116] Please see Figure 14 In some embodiments, the second filter element 120 includes a coarse filter layer 121, a medium filter layer 122, and a fine filter layer 123 stacked sequentially along the direction from the return water chamber 112 to the clear water chamber 111.

[0117] As water flows through the return water chamber 112 and enters the clear water chamber 111 via the second filter element 120, it sequentially passes through the coarse filter layer 121, the medium filter layer 122, and the fine filter layer 123. The coarse filter layer 121 intercepts large particles of impurities in the water flow, such as rice husks, pebbles, and silt, while protecting the medium filter layer 122 and the fine filter layer 123 during filtration. The medium filter layer 122 intercepts fine suspended solids, such as dust. The fine filter layer 123 achieves final clarification, ensuring that the effluent is free of particles.

[0118] In this embodiment, the coarse filter layer 121, the medium filter layer 122, and the fine filter layer 123 are all made of filter screens, with their pore sizes decreasing sequentially.

[0119] For example, the coarse filter layer 121 has a pore size of 0.25mm-0.3mm, a mesh density of 40-60 mesh, is made of 304 stainless steel wire mesh or PP plastic perforated plate, and has a thickness of 1mm-2mm. It has high strength, is corrosion resistant, not easily deformed, and is easy to backwash.

[0120] The pore size of the middle filter layer 122 is 0.1mm-0.15mm, the mesh density is 100-150 mesh, and the material is nylon screen or high-purity stainless steel microporous mesh.

[0121] The fine filter layer 123 has a pore size of 0.05mm-0.075mm, a mesh density of 200-300 mesh, and is made of ultra-fine stainless steel wire woven mesh or PTFE (Polytetrafluoroethylene) membrane composite filter mesh with a thickness of 0.5mm-1mm.

[0122] In other embodiments of this application, the middle filter layer 122 may also be a biochemical cotton layer or an activated carbon fiber cloth layer to enhance adsorption capacity and remove some dissolved organic matter, with a thickness of 5mm-10mm.

[0123] Alternatively, the middle filter layer 122 can also be a composite of filter screen and adsorption material.

[0124] When using the rice washing mechanism 10, the rice milled by the rice milling mechanism 20 falls into the washing chamber 211 through the rice droplet 21. The circulating water pump 130 draws water from the clear water chamber 111 and sprays water from the spray holes 222 on the blades 221 of the spray impeller 220, injecting the water into the washing chamber 211 and gradually submerging the rice. At the same time, the blades 221 are driven by the reaction force of the sprayed water, causing the entire spray impeller 220 to start rotating, thereby agitating the water and rice. Under the action of the water vortex formed by the agitation of the spray impeller 220 and the centrifugal force, the rice and the impurities mixed in with the rice are separated. As the water continues to be injected, the separated impurities have a lower density and therefore float on the surface of the water, while the rice has a higher density and falls to the bottom of the washing chamber 211, thus completing the separation. When the liquid level in the washing chamber 211 exceeds the height of the overflow port 251, the water carrying the impurities overflows from the overflow port 251 and enters the return water chamber 112. Subsequently, impurities are blocked by the second filter element 120, and the water flows through the second filter element 120 and enters the clear water chamber 111. It is then pumped away by the circulating water pump 130 and injected into the washing chamber 211 to achieve repeated washing of the rice.

[0125] In summary, the rice washing mechanism 10 drives the water flow to rotate through the water spray impeller 220 at the bottom of the washing chamber 211, and uses centrifugal force to achieve efficient separation of impurities such as rice bran from rice. At the same time, an overflow port is set on the upper part of the side wall of the washing chamber 211. Combined with the principle of buoyancy, impurities with relatively low density are automatically discharged to the return water chamber 112 with the water flow, without manual intervention. Finally, impurities are filtered by the second filter element 120, and water is repeatedly supplied by the circulating water pump 130, which greatly reduces water consumption and prevents rice loss.

[0126] The aforementioned rice washing mechanism 10 integrates a closed-loop automatic washing system based on hydraulic drive and centrifugal and buoyancy separation principles. It separates impurities by utilizing the density difference between rice and impurities such as rice bran, through centrifugal sedimentation and the floating of lighter impurities. The overflow mechanism of the overflow component 250 automatically removes impurities, and the circulating filtration system ensures the recycling of washing water, significantly reducing water consumption. With only a single power source, the rice washing mechanism 10 achieves fully automatic washing without manual intervention, offering advantages such as ease of operation, high washing efficiency, water conservation, environmental friendliness, and a compact, integrated structure.

[0127] Please refer to the following: Figure 15 , Figure 16 and Figure 17 The embodiments of this application also provide a rice milling machine, including a rice milling mechanism 20 and a rice washing mechanism 10 as described in any of the above embodiments. The rice milling mechanism 20 is provided with a rice discharge port 21, which is aligned with the washing chamber 211.

[0128] In use, the rice milled by the rice milling mechanism 20 falls from the rice drop 21 into the washing chamber 211, and then the rice washing mechanism 10 washes the rice, realizing the integration of rice milling and washing.

[0129] This embodiment has the rice washing mechanism 10 of any of the above embodiments, and therefore has all the beneficial effects of the rice washing mechanism 10 of any of the above embodiments, which will not be described in detail here.

[0130] In some embodiments, the rice milling machine further includes a storage bin 30, a discharge bin 40, a motor assembly 50, and a bran collection box 60.

[0131] The storage silo 30 has a first discharge port 31 at its bottom, located above the discharge silo 40. The discharge silo 40 also has a second discharge port 41 at its bottom, which is connected to the inlet of the rice milling mechanism 20. The rice milling mechanism 20 also has a bran discharge port 22 and a paddy circulation port 23. The bran discharge port 22 is connected to the inlet of the bran collection box 60, and the paddy circulation port 23 is connected to the top of the discharge silo 40.

[0132] In use, paddy rice is placed in the storage hopper 30 beforehand. When milling is required, the first discharge port 31 opens, and the paddy rice enters the milling mechanism 20 through the first discharge port 31 and the second discharge port 41. Subsequently, the motor assembly 50 drives the screw in the milling mechanism 20 to rotate, cooperating with the screen in the milling mechanism 20 to dehull the paddy rice. The dehulled husks fall through the gaps in the screen, i.e., the husk discharge port 22, into the husk collection box 60. In particular, the screw is tilted, which can push the paddy rice upward to the paddy rice circulation port 23, and then into the discharge hopper 40, and then back into the milling mechanism 20 through the second discharge port 41 for milling, so that the paddy rice is completely dehulled. After the milling time is reached, the rice discharge port 21 at the bottom of the milling mechanism 20 opens, and the motor assembly 50 drives the screw to rotate in the opposite direction, so that the dehulled rice moves towards the rice discharge port 21 and falls into the washing chamber 211, completing the milling process.

[0133] 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.

[0134] 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 washing mechanism, characterized in that, include: Water circulation components, including a circulating water pump; as well as The cleaning assembly includes a rice collection box, a water spray impeller, a drain switch, and a first filter. The rice collection box has a cleaning chamber for holding rice, and the chamber wall has an overflow outlet and a first drain outlet. The water spray impeller is rotatably mounted on the bottom wall of the cleaning chamber and connected to a circulating water pump. The water spray impeller includes several blades, and the surface of each blade on the same side of its rotation axis has a water spray hole. The drain switch and the first filter are both located at the first drain outlet.

2. The rice washing mechanism according to claim 1, characterized in that, The water circulation assembly further includes a water circulation chamber and a second filter element. The second filter element is disposed on the inner wall of the water circulation chamber and separates the inner cavity of the water circulation chamber to form a clear water chamber and a return water chamber. The circulating water pump is disposed in the clear water chamber. The overflow port is connected to the return water chamber so that the water overflowing through the overflow port flows back to the clear water chamber through the return water chamber.

3. The rice washing mechanism according to claim 2, characterized in that, The rice collection box is stacked on the water circulation chamber, and the water spray impeller is aligned with the circulating water pump.

4. The rice washing mechanism according to claim 3, characterized in that, The rice collection box is provided with a drainage channel, which is located on the side of the overflow outlet away from the washing chamber and is connected to the overflow outlet; the bottom end of the drainage channel and the top end of the return water chamber are both open, and at least part of the return water chamber is aligned with the drainage channel.

5. The rice washing mechanism according to claim 4, characterized in that, The cleaning assembly also includes an overflow component, which is disposed on the inner wall of the rice collection box. The height of the overflow component is less than the height of the rice collection box, and the overflow outlet is formed above the overflow component. The drainage channel is a drainage chamber, and the washing chamber and the drainage chamber are formed by the overflow component separating the inner cavity of the rice collection box.

6. The rice washing mechanism according to claim 5, characterized in that, The height of the overflow component is 75mm-95mm.

7. The rice washing mechanism according to claim 5, characterized in that, The first drain outlet is located on the overflow component and communicates with the drain cavity.

8. The rice washing mechanism according to claim 7, characterized in that, The drain switch includes a sliding member slidably disposed on the overflow member, and the first drain outlet is located on the sliding path of the sliding member.

9. The rice washing mechanism according to claim 5, characterized in that, The inner wall of the water circulation chamber is provided with a pair of first retaining members, and the wall of the drainage chamber is provided with a second retaining member; the lower part of the second filter element is inserted between the two first retaining members, and the upper part is inserted between the overflow element and the second retaining member.

10. The rice washing mechanism according to any one of claims 3 to 9, characterized in that, The top surface of the water circulation chamber is provided with a first magnetic surface, and the bottom surface of the rice collection box is provided with a second magnetic surface. The first magnetic surface and the second magnetic surface are magnetically attracted to each other.

11. The rice washing mechanism according to any one of claims 3 to 9, characterized in that, The outlet of the circulating water pump is connected to a first magnetic connector. The bottom end of the water spray impeller passes through the bottom wall of the cleaning chamber and is provided with a second magnetic connector. The first magnetic connector and the second magnetic connector are magnetically attracted to each other.

12. The rice washing mechanism according to any one of claims 2 to 9, characterized in that, The second filter element includes a coarse filter layer, a medium filter layer, and a fine filter layer stacked sequentially along the direction from the return water chamber to the clear water chamber.

13. The rice washing mechanism according to any one of claims 2 to 9, characterized in that, A second drain outlet is provided through the wall of the water chamber, and a sealing element is detachably embedded in the second drain outlet.

14. The rice washing mechanism according to claim 1, characterized in that, The water spray hole includes a first water spray hole, a second water spray hole and a third water spray hole. The first water spray hole and the second water spray hole are both located on the side of the blade near the center of the water spray impeller, and the first water spray hole is located below the second water spray hole. The third water spray hole is located in the middle of the blade. The first spray hole is used to rinse the rice at the bottom of the washing chamber, the second spray hole is used to roll the water flow at the bottom of the washing chamber upward, and the third spray hole is used to drive the water in the washing chamber to form a horizontal swirling flow.

15. The rice washing mechanism according to claim 1, characterized in that, The number of blades is three, and the three blades are evenly distributed along the circumference of the water jet impeller.

16. A rice milling machine, characterized in that, It includes a rice milling mechanism and a rice washing mechanism as described in any one of claims 1 to 15, wherein the rice milling mechanism is provided with a rice discharge port, and the rice discharge port is aligned with the washing chamber.

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