A rice milling machine bran removal mechanism

Abstract

This utility model relates to the field of rice milling machine technology, specifically to a rice milling machine bran removal mechanism, including an operating table; a screening component installed on one side of the operating table, used to separate bran from rice; and a blowing component installed on one side of the screening component, used to separate fine bran fragments from rice. Compared with the prior art, this application adopts a collaborative design of the screening component and the blowing component, achieving coarse and fine bran grading through double-layer vibrating screening of the first and second receiving frames, and precisely separating fine bran fragments with directional airflow from the blower, significantly improving bran removal efficiency and rice grain purity.

Description

Technical Field

[0001] This utility model relates to the field of rice milling machine technology, and in particular to a rice milling machine bran removal mechanism. Background Technology

[0002] In the field of agricultural product processing, rice milling machines are key equipment for processing paddy or brown rice into edible rice. Their bran removal effect directly determines the quality and market value of rice. However, the existing bran removal mechanisms of rice milling machines have revealed many problems in practical applications, which seriously restricts the development of the rice processing industry.

[0003] Existing rice milling machines have significant shortcomings in removing bran and broken rice. On the one hand, there is a lack of effective separation methods for bran and broken rice of different particle sizes, resulting in low bran removal efficiency. Large bran particles and fine broken bran often mix together, making it difficult to separate them completely. This leaves a large amount of impurities in the rice grains, affecting the purity of the rice. On the other hand, existing mechanisms are even more inadequate in handling fine broken bran, which easily adheres to the surface of the rice grains or mixes into them, further reducing the quality of the rice. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a rice milling machine bran removal mechanism to solve the problem of low bran removal efficiency of existing bran removal mechanisms.

[0005] To achieve the above objectives, this utility model provides a rice milling machine bran removal mechanism, comprising: an operating table; a screening component installed on one side of the operating table, the screening component being used to separate bran from rice; and a blowing component installed on one side of the screening component, the blowing component being used to separate fine bran fragments from rice.

[0006] Preferably, the screening component includes a mounting base installed on one side of the operating table, the mounting base having a groove, and a first receiving frame and a second receiving frame slidably installed in the groove, the second receiving frame being positioned above the first receiving frame.

[0007] Preferably, a second sliding column is slidably installed in the slide groove, the first receiving frame and one side of the second sliding column are engaged, a partition plate is fixedly installed in the slide groove, and return springs are fixedly connected to both sides of the bottom of the second sliding column, and the ends of the two return springs away from the second sliding column are fixedly connected to one side of the slide groove and one side of the partition plate.

[0008] Preferably, a first sliding column is slidably installed in the slide groove, and second sliding rods are snapped onto the symmetrical sides of the second receiving frame. The second sliding rods are fixedly connected to the first sliding column. A hydraulic rod is installed in the slide groove, and the output end of the hydraulic rod is fixedly connected to the first sliding column. The first receiving frame is disposed between the two second sliding rods.

[0009] Preferably, cranks are rotatably mounted on both symmetrical sides of the second slide, and a crank arm is rotatably mounted on the other end of the cranks. One end of the crank arm, away from the cranks, is rotatably mounted on one side of the first slide.

[0010] Preferably, a first slide rod is engaged with each of the symmetrical sides of the second receiving frame, and a sliding seat is fixedly installed on each of the symmetrical sides of the mounting base. The other end of the first slide rod is slidably installed in the sliding seat, and the first receiving frame is disposed between the two first slide rods.

[0011] Preferably, the blowing assembly includes a separation chamber that snaps onto one side of the operating table, a fan is installed on one side of the separation chamber, a connecting sleeve is snapped onto one side of the separation chamber, a separation box is snapped onto the other side of the connecting sleeve, and a collection box is provided at the bottom of the separation chamber.

[0012] Preferably, a through hole is provided on one side of the separation chamber, and one side of the first receiving frame is slidably installed in the through hole.

[0013] The beneficial effects of this utility model are:

[0014] 1. This type of rice milling machine's bran removal mechanism is equipped with a screening component. Through the coordinated vibration screening of the first and second receiving frames, bran and broken rice of different particle sizes can be effectively separated, improving the bran removal efficiency. The reciprocating motion driven by the hydraulic rod, combined with the elastic reset function of the return spring, makes the screening process more stable and reliable, reducing clogging. The structure of the separator plate and sliding seat ensures the smooth operation of each moving part, extending the service life of the equipment. The second receiving frame removes large bran particles, while the first receiving frame conveys fine broken bran along with rice grains to the next process. The subsequent fine separation by the blowing component ultimately achieves a high-quality rice milling and bran removal effect.

[0015] 2. This rice milling machine's bran removal mechanism is equipped with a blowing component. The directional airflow generated by the blower can accurately separate the lighter bran from the rice grains, significantly improving the purity of the final rice. The sealed connection between the separation chamber and the connecting sleeve ensures that the airflow acts on the material, improving air separation efficiency while reducing energy consumption. The separate structure of the separation box and the collection box enables automatic classification and collection of bran and rice, avoiding secondary mixing. The sliding fit between the through hole and the first receiving frame allows the screened material to directly enter the air separation process, forming a continuous automated production process. The collaborative work of this component and the screening component forms a dual bran removal system of "mechanical screening + airflow selection", making bran removal more thorough. It is particularly suitable for processing fine bran and ultimately produces high-quality polished rice with lower impurity content. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model 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 for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the screening component of this utility model;

[0019] Figure 3 This is a schematic diagram showing the disassembled structure of the screening component of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 5 This is a three-dimensional structural diagram of the blower assembly of this utility model;

[0022] Figure 6 This is a schematic diagram showing the disassembled structure of the blower assembly of this utility model.

[0023] The diagram is marked as follows:

[0024] 1. Operating table; 2. Mounting base; 3. First receiving frame; 4. Second receiving frame; 5. First slide rod; 6. Second slide rod; 7. Hydraulic rod; 8. First sliding column; 9. Second sliding column; 10. Return spring; 11. Crank; 12. Crank arm; 14. Slide groove; 15. Divider plate; 16. Sliding seat; 17. Separation chamber; 18. Fan; 19. Through hole; 20. Connecting sleeve; 21. Collection box; 22. Separation box. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 6 As shown, the rice milling machine's bran removal mechanism includes: an operating platform 1; a screening component installed on one side of the operating platform 1, used to separate bran from rice; and an air blowing component installed on one side of the screening component, used to separate fine bran fragments from rice. In use, the mixture after rice milling is poured into the screening component. The screening component uses vibration to initially separate larger bran particles from rice grains, intercepting and discharging the large bran particles. The rice grains and fine bran fragments pass through the screen holes into subsequent processing stages. The air blowing component, installed on one side of the screening component, generates a directional airflow. Utilizing the weight difference between rice grains and bran fragments, it blows the lighter, finer bran fragments away from the rice grain stream. The rice grains fall and are collected under gravity, while the bran fragments are carried away by the airflow. The operating platform 1 serves as the support platform for the entire mechanism, ensuring the stable operation of the screening component and the air blowing component. The screening component performs coarse separation, and the air blowing component achieves fine separation; their combined action ensures effective bran removal.

[0028] like Figure 2 , Figure 3 , Figure 4As shown, the screening assembly includes a mounting base 2 installed on one side of the operating table 1. A groove 14 is formed within the mounting base 2, and a first receiving frame 3 and a second receiving frame 4 are slidably installed within the groove 14, with the second receiving frame 4 positioned above the first receiving frame 3. A second sliding column 9 is slidably installed within the groove 14, with one side of the first receiving frame 3 and the second sliding column 9 engaging. A partition plate 15 is fixedly installed within the groove 14. Return springs 10 are fixedly connected to both sides of the bottom of the second sliding column 9, with one end of each return spring 10 away from the second sliding column 9 fixedly connected to one side of the groove 14 and one side of the partition plate 15. A first sliding column 8 is slidably installed within the groove 14, and the second receiving frame 4 is symmetrically positioned within the groove 14. The second slide rod 6 is snapped onto both sides and is fixedly connected to the first slide column 8. A hydraulic rod 7 is installed in the slide groove 14 and its output end is fixedly connected to the first slide column 8. The first receiving frame 3 is located between the two second slide rods 6. Cranks 11 are rotatably mounted on both sides of the second slide column 9. A crank arm 12 is rotatably mounted on the other end of the crank 11. The end of the crank arm 12 away from the crank 11 is rotatably mounted on one side of the first slide column 8. The first slide rod 5 is snapped onto both sides of the second receiving frame 4. A sliding seat 16 is fixedly mounted on both sides of the mounting base 2. The other end of the first slide rod 5 is slidably mounted in the sliding seat 16. The first receiving frame 3 is located between the two first slide rods 5.

[0029] When it is necessary to separate the rice bran mixture, the hydraulic rod 7 is activated, and its output end drives the first sliding column 8 to reciprocate linearly within the trough 14. The second sliding rod 6, which is fixedly connected to the first sliding column 8, moves synchronously, thereby driving the second receiving frame 4 to sway back and forth within the trough 14. At the same time, the first sliding column 8 drives the second sliding column 9 to reciprocate through the transmission action of the crank arm 12 and the crank 11. Since the second sliding column 9 is engaged with the first receiving frame 3, and return springs 10 are provided on both sides connecting the side wall of the trough 14 and the partition plate 15, the first receiving frame 3 generates elastic vibration. The rice bran mixture entering the screening component first... First, the rice grains fall into the second receiving frame 4. During the reciprocating shaking process, large particles of bran are screened out, and the separated rice grains and fine bran fall through the screen holes into the first receiving frame 3 below. The movement of the second receiving frame 4 is kept stable by the sliding of the first sliding rod 5 in the sliding seat 16, while the first receiving frame 3 continues to vibrate under the drive of the second sliding column 9, so that the material is evenly distributed and enters the next process. Throughout the process, the return spring 10 ensures that the vibration component is reset in time, the partition plate 15 maintains the stability of the internal structure of the chute 14, and the power provided by the hydraulic rod 7 is converted into the coordinated vibration of the two receiving frames through mechanical linkage, so as to achieve efficient continuous screening operation.

[0030] like Figure 5 , Figure 6As shown, the blowing assembly includes a separation chamber 17 that is snapped onto one side of the operating table 1. A blower 18 is installed on one side of the separation chamber 17, a connecting sleeve 20 is snapped onto one side of the separation chamber 17, and a separation box 22 is snapped onto the other side of the connecting sleeve 20. A collection box 21 is provided at the bottom of the separation chamber 17. A through hole 19 is opened on one side of the separation chamber 17, and one side of the first receiving frame 3 is slidably installed in the through hole 19. When the sieved rice grains and bran mixture enter the separation chamber 17 through the through hole 19 from the first receiving frame 3, the blower 18 is started to generate a directional airflow, which uses the difference in specific gravity between the rice grains and the bran to perform secondary separation. The lighter bran is blown into the separation box 22 for collection under the action of the airflow, while the heavier rice grains fall directly under the action of gravity and enter the collection box 21 through the bottom of the separation chamber 17 to complete the final separation. The connecting sleeve 20 ensures the airflow channel is sealed, making the air separation process efficient and stable, thereby achieving the complete separation of rice grains and bran.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0032] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rice mill bran removing mechanism characterized by comprising: include: Operating table (1); screening component, the screening component is installed on one side of the operating table (1), the screening component is used to separate bran from rice; blowing component, the blowing component is installed on one side of the screening component, the blowing component is used to separate fine bran from rice.

2. The rice mill bran removing mechanism according to claim 1, characterized in that, The screening assembly includes a mounting base (2) installed on one side of the operating table (1). A sliding groove (14) is provided in the mounting base (2). A first receiving frame (3) and a second receiving frame (4) are slidably installed in the sliding groove (14). The second receiving frame (4) is located above the first receiving frame (3).

3. The rice milling machine bran removal mechanism according to claim 2, characterized in that, A second sliding column (9) is slidably installed in the slide groove (14). The first receiving frame (3) and one side of the second sliding column (9) are engaged. A partition plate (15) is fixedly installed in the slide groove (14). Two return springs (10) are fixedly connected to the bottom of the second sliding column (9) on both sides respectively. The two return springs (10) are fixedly connected to one side of the slide groove (14) and one side of the partition plate (15) at the ends away from the second sliding column (9).

4. The rice mill bran removing mechanism according to claim 3, wherein The first sliding column (8) is slidably installed in the slide groove (14), and the second sliding rod (6) is snapped into the symmetrical sides of the second receiving frame (4). The second sliding rod (6) is fixedly connected to the first sliding column (8). A hydraulic rod (7) is installed in the slide groove (14). The output end of the hydraulic rod (7) is fixedly connected to the first sliding column (8). The first receiving frame (3) is arranged between the two second sliding rods (6).

5. The rice mill bran removing mechanism according to claim 4, wherein A crank (11) is rotatably mounted on both sides of the second slide (9), and a crank arm (12) is rotatably mounted on the other end of the crank (11). One end of the crank arm (12) away from the crank (11) is rotatably mounted on one side of the first slide (8).

6. The rice mill bran removing mechanism according to claim 5, wherein The second receiving frame (4) is fitted with a first slide rod (5) on both sides of its symmetrical sides. The mounting base (2) is fixedly installed with a sliding seat (16) on both sides of its symmetrical sides. The other end of the first slide rod (5) is slidably installed in the sliding seat (16). The first receiving frame (3) is set between the two first slide rods (5).

7. The rice milling machine bran removal mechanism according to claim 2, characterized in that, The blowing assembly includes a separation chamber (17) that is snapped onto one side of the operating table (1). A fan (18) is installed on one side of the separation chamber (17). A connecting sleeve (20) is snapped onto one side of the separation chamber (17). A separation box (22) is snapped onto the other side of the connecting sleeve (20). A collection box (21) is provided at the bottom of the separation chamber (17).

8. The rice mill bran removing mechanism according to claim 7, wherein A through hole (19) is provided on one side of the separation chamber (17), and one side of the first receiving frame (3) is slidably installed in the through hole (19).

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