Small rice polisher
By introducing a quick-release maintenance frame and filtration mechanism into a small rice polishing machine, the problem of broken rice and impurity accumulation has been solved, enabling convenient maintenance and efficient cleaning of the equipment, and improving the stability of the equipment and the quality of polished rice.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN MINGWANG FOOD CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
AI Technical Summary
During use, household rice polishing machines are prone to accumulating broken rice and impurities inside, which can cause malfunctions, make maintenance cumbersome and time-consuming, and potentially lead to wear and tear, thus affecting the lifespan of the equipment.
A small rice milling machine was designed, which adopts a quick-release maintenance frame and a filtration mechanism. The outward-folding frame can be achieved by fastening bolts and hinge devices, which facilitates maintenance. Waste is collected through the first and second internal filters, ensuring the cleanliness and stability of the equipment.
It improves the convenience of equipment maintenance and cleaning efficiency, prevents waste from damaging the equipment, ensures the quality of polished rice and the stability of the equipment, reduces maintenance costs, and extends service life.
Smart Images

Figure CN224127345U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice milling machines, and specifically to a small rice milling machine. Background Technology
[0002] A rice polishing machine is a specialized piece of equipment primarily used for the hulling of paddy rice and the whitening of brown rice. It can automatically complete these operations in one go, allowing for a quick and accurate assessment of paddy rice quality. The working principle of the rice polishing machine is that a belt-driven main shaft rotates the feeding rollers and feeding cylinder, propelling the brown rice forward along the shaft into the polishing chamber. Under the combined pressure of the feeding rollers, feeding cylinder, polishing cylinder, polishing rollers, chaff removal screen, and discharge port, the brown rice is squeezed and bleached through friction. Once the rice grains reach the required precision, they are discharged from the discharge port and bagged. Simultaneously, a fan below the polishing chamber draws air into the polishing chamber through the inner hole of the main shaft, fluidizing the rice grains inside, enhancing the whitening effect, and removing some of the heat generated during the whitening process. The bran is discharged through the chaff removal screen and suction hose by the fan into a chaff collector for collection and bagging.
[0003] Currently, a significant problem often encountered in the use of household rice milling machines is the accumulation of broken rice and impurities inside. If these broken rice and impurities are not cleaned in time, they often become stuck between various parts of the machine, not only affecting the normal operation of the rice milling machine, but also potentially leading to a decrease in machine performance or even malfunction.
[0004] When rice milling machines need maintenance to remove broken rice and impurities, users often find that numerous bolts must be removed to open the machine's casing and access the internal components. This process is tedious and time-consuming, significantly reducing maintenance efficiency. Frequent disassembly and reinstallation of bolts can also cause additional wear and tear on the machine, shortening its lifespan. Utility Model Content
[0005] The main objective of this invention is to provide a small rice milling machine that can effectively solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A small rice polishing machine includes a rice polishing machine casing, a cylindrical screen, and a machine base. The cylindrical screen is located inside the rice polishing machine casing, and the machine base is installed on the side wall of the rice polishing machine casing.
[0008] A fixed frame is provided at the opening at the front end of the base, and the front end of the fixed frame is connected to an outward-folding frame through a hinge device. An inner fixed plate is installed inside the frame of the outward-folding frame. The outward-folding frame is connected to the fixed frame by fastening bolts. The outward-folding frame is flipped outward by fastening bolts and hinge device, which facilitates the maintenance of the rice milling machine.
[0009] The fixed frame has a through groove on its end face, and the inner fixed plate is directly opposite the through groove. The inner wall of the inner fixed plate is provided with a first internal filter and a second internal filter from top to bottom. The upper end of the first internal filter and the second internal filter is provided with a collection chamber. Waste inside the rice milling machine is collected through the first internal filter, the second internal filter and the collection chamber.
[0010] As a preferred embodiment of this utility model, the rice milling machine chassis and base are designed as an integral unit, the fixed frame and base are designed as an integral unit, and a groove is formed between the fixed frame and the base. The outer end of the fixed frame is connected to a sealing strip by adhesive.
[0011] As a preferred embodiment of this utility model, the two hinge devices are symmetrically distributed on the outward-folding frame. The outward-folding frame is connected to the hinge devices by bolts. An anti-slip pad is provided between the hinge device and the outward-folding frame, and the anti-slip pad is fixed to the outward-folding frame by adhesive. The hinge device is fixed to the machine base by bolts.
[0012] As a preferred embodiment of this utility model, screw holes are provided on the outward-folding frame and the fixed frame, and fastening bolts are inserted into the screw holes of the outward-folding frame and the fixed frame to fix the outward-folding frame and the fixed frame. Anti-slip strips are connected around the outward-folding frame by adhesive.
[0013] As a preferred embodiment of this utility model, the cross-section of the inner fixing plate is designed in the shape of a "T", and the inner fixing plate is fixed to the outer frame by bolts. A sealing strip is provided at the connection between the inner fixing plate and the outer frame.
[0014] As a preferred embodiment of this utility model, the first internal filter and the second internal filter have the same structure, and the cross-section of the first internal filter and the second internal filter is trapezoidal, the edges of the first internal filter and the second internal filter are arc-shaped, and a gap is formed between the two internal filters.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The quick-release maintenance frame design utilizes a hinged mechanism and fastening bolts to achieve an outward tilt, significantly improving the ease of equipment maintenance. Users can easily open the equipment's interior for routine cleaning and maintenance with simple operations, thereby reducing maintenance costs and enhancing the equipment's maintainability.
[0017] The filtration system includes a first internal filter and a second internal filter, effectively collecting and storing waste generated inside the rice milling machine, such as broken rice and impurities. This not only ensures the cleanliness of the rice milling machine and prevents damage to the equipment from waste, but also improves the quality of the milled rice and guarantees the purity of the product. At the same time, the design of the collection chamber makes waste removal more convenient, further enhancing the practicality and efficiency of the equipment.
[0018] The combined use of the quick-release maintenance frame and the filtration mechanism enhances the stability and durability of the equipment. The outward-folding frame is connected to the hinge device by bolts and is equipped with anti-slip pads to ensure the stability and safety of the outward-folding action. The sealing strip design between the inner fixing plate and the outward-folding frame effectively prevents the leakage of rice grains and dust, maintaining a clean internal environment for the equipment. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 The diagram shows the fixed frame, the outward-folding frame, and the hinge device of this utility model.
[0021] Figure 3 This is an exploded view of the fixed frame, the outward-folding frame, the hinge device, and the inner fixing plate of this utility model.
[0022] Figure 4 This is a diagram showing the inner fixing plate, internal filter, and collection chamber of this utility model.
[0023] In the diagram: 1. Rice milling machine casing; 2. Cylindrical screen; 3. Machine base; 4. Fixed frame; 5. Outward-folding frame; 6. Inner fixing plate; 7. Hinge device; 8. Fastening bolts; 9. Through groove; 10. First internal filter screen; 11. Second internal filter screen; 12. Collection bin. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1 - Figure 4 As shown, a small rice milling machine mainly consists of a rice milling machine casing 1, a cylindrical screen 2, and a base 3. The cylindrical screen 2 is cleverly placed inside the rice milling machine casing 1, while the base 3 is installed on the side wall of the rice milling machine casing 1 to provide stable support.
[0026] A fixed frame 4 is designed at the front opening of the base 3. The front end of the fixed frame 4 is connected to the outward-folding frame 5 via a hinge device 7. An inner fixing plate 6 is installed inside the outward-folding frame 5, and the outward-folding frame 5 is connected to the fixed frame 4 by fastening bolts 8. This design allows the outward-folding frame 5 to achieve an outward-folding action through the cooperation of the fastening bolts 8 and the hinge device 7, thereby facilitating the user's daily inspection and maintenance of the rice milling machine.
[0027] To further improve the convenience of maintenance, a through groove 9 is opened on the end face of the fixed frame 4, and the inner fixing plate 6 is directly opposite this through groove 9. The inner wall of the inner fixing plate 6 is provided with a first internal filter 10 and a second internal filter 11 from top to bottom. The upper ends of these two internal filters are provided with collection chambers 12, which work together to effectively collect and store the waste generated inside the rice polishing machine, ensuring the cleanliness and working efficiency of the rice polishing machine.
[0028] In terms of design, the rice milling machine casing 1 and base 3 are designed as a single unit, and the fixing frame 4 and base 3 are also integrated. A recess is formed between the two, which not only enhances the stability of the structure but also improves the overall aesthetics. In addition, the outer end of the fixing frame 4 is connected to a sealing strip with adhesive to prevent dust and impurities from entering, ensuring a clean internal environment for the rice milling machine.
[0029] To ensure the stability and durability of the outward-folding frame 5, two hinge devices 7 are symmetrically distributed on both sides. The outward-folding frame 5 is connected to the hinge devices 7 by bolts, and anti-slip pads are provided between the hinge devices 7 and the outward-folding frame 5. These pads are fixed to the outward-folding frame 5 with adhesive to prevent slippage during use. At the same time, the hinge devices 7 are fixed to the base 3 by bolts, ensuring the stability of the entire structure.
[0030] Screw holes are provided on the outward-folding frame 5 and the fixed frame 4, through which fastening bolts 8 can be passed to securely fix the outward-folding frame 5 and the fixed frame 4. To further improve safety and stability during use, anti-slip strips are attached to the perimeter of the outward-folding frame 5 with adhesive, which can effectively prevent the operator from slipping during use.
[0031] The design of the inner fixing plate 6 is also ingenious, with a "T"-shaped cross-section. This design not only enhances the structural strength but also facilitates its fixing to the outer frame 5 with bolts. A sealing strip is also provided at the connection between the inner fixing plate 6 and the outer frame 5 to ensure the airtightness of the rice milling machine and prevent the leakage of rice grains and dust.
[0032] Furthermore, the first internal filter 10 and the second internal filter 11 have the same structural design, with a trapezoidal cross-section and arc-shaped edges. This design is not only aesthetically pleasing but also effectively prevents the filter edges from damaging the rice grains. A gap is formed between the two internal filters, allowing the rice grains to pass through smoothly while effectively separating impurities and broken rice, ensuring the quality of the refined rice.
[0033] Mount the base 3 onto the side wall of the rice milling machine casing 1, ensuring its stability. Install the fixing frame 4 at the front opening of the base 3, ensuring a secure connection. Connect the outward-folding frame 5 to the fixing frame 4 via the hinge device 7. Use fastening bolts 8 to connect the outward-folding frame 5 to the fixing frame 4, ensuring that the outward-folding frame 5 can stably perform its outward-folding action.
[0034] Install the first internal filter 10 and the second internal filter 11 on the inner wall of the inner fixing plate 6, ensuring they are arranged sequentially from top to bottom. Connect the inner fixing plate 6 to the outward-folding frame 5 with bolts, ensuring a secure connection. Adhere a sealing strip to the outer end of the fixing frame 4 to prevent dust and impurities from entering. Adhere anti-slip strips around the perimeter of the outward-folding frame 5 to ensure a non-slip effect during use. Fix anti-slip pads to the connection between the outward-folding frame 5 and the hinge device 7 with adhesive to prevent slippage. Fix the hinge device 7 to both sides of the outward-folding frame 5 and the base 3 with bolts, ensuring structural stability.
[0035] Pour the rice to be processed into the rice milling machine casing 1. Turn on the power to the rice milling machine and start the equipment for rice milling. During processing, regularly check whether the outer frame 5 is stable and ensure that it can flip outward normally. If maintenance is required, loosen the fastening bolts 8 and flip the outer frame 5 outward for easy cleaning and maintenance of the interior. Waste generated inside the rice milling machine will enter the collection chamber 12 through the first internal filter 10 and the second internal filter 11. Clean the waste in the collection chamber 12 regularly. Check the sealing strip at the connection between the inner fixing plate 6 and the outer frame 5 to ensure that no rice grains or dust leak out. During use, pay attention to the anti-slip effect of the anti-slip strips to ensure safe operation.
[0036] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A small rice polishing machine, comprising a rice polishing machine casing (1), a cylindrical screen (2), and a base (3), wherein the cylindrical screen (2) is located inside the rice polishing machine casing (1), and the base (3) is installed on the side wall of the rice polishing machine casing (1), characterized in that: The base (3) has a fixed frame (4) at the front opening, and the front end of the fixed frame (4) is connected to an outward-folding frame (5) via a hinge device (7). An inner fixing plate (6) is installed inside the frame of the outward-folding frame (5). The outward-folding frame (5) is connected to the fixed frame (4) via fastening bolts (8). The outward-folding frame (5) is flipped outward by fastening bolts (8) and hinge device (7), which facilitates the maintenance of the rice milling machine. The end face of the fixed frame (4) is provided with a through groove (9), and the inner fixed plate (6) is directly opposite the through groove (9). The inner wall of the inner fixed plate (6) is provided with a first internal filter (10) and a second internal filter (11) from top to bottom. The upper end of the first internal filter (10) and the second internal filter (11) is provided with a collection chamber (12). The waste inside the rice milling machine is collected through the first internal filter (10), the second internal filter (11) and the collection chamber (12).
2. A compact rice mill as claimed in claim 1, wherein: The rice milling machine casing (1) and base (3) are designed as a single unit, the fixed frame (4) and base (3) are designed as a single unit, and a groove is formed between the fixed frame (4) and base (3). The outer end of the fixed frame (4) is connected with a sealing strip by adhesive.
3. A compact rice mill as claimed in claim 2, wherein: Two hinge devices (7) are symmetrically distributed on the outward-folding frame (5). The outward-folding frame (5) is connected to the hinge devices (7) by bolts. Anti-slip pads are provided between the hinge devices (7) and the outward-folding frame (5), and the anti-slip pads are fixed to the outward-folding frame (5) by adhesive. The hinge devices (7) are fixed to the base (3) by bolts.
4. A compact rice mill as claimed in claim 3, wherein: The outward-folding frame (5) and the fixed frame (4) are provided with screw holes. The fastening bolts (8) are in the screw holes of the outward-folding frame (5) and the fixed frame (4) to fix the outward-folding frame (5) and the fixed frame (4). Anti-slip strips are connected around the outward-folding frame (5) by adhesive.
5. A small rice milling machine according to claim 4, characterized in that: The inner fixing plate (6) has a "T" shaped cross section, and the inner fixing plate (6) is fixed to the outer frame (5) by bolts. A sealing strip is provided at the connection between the inner fixing plate (6) and the outer frame (5).
6. A compact rice mill as claimed in claim 5, wherein: The first internal filter (10) and the second internal filter (11) have the same structure, and the cross-section of the first internal filter (10) and the second internal filter (11) is trapezoidal. The edges of the first internal filter (10) and the second internal filter (11) are arc-shaped, and a gap is formed between the two internal filters.