A grain husking machine for rice processing

Abstract

The utility model relates to a grain processing technical field especially relates to a kind of grain peeling machine for rice processing, including: inlet hopper, processing chamber, peeling structure;Inlet hopper is set in processing chamber;Peeling structure is set in processing chamber;Peeling structure includes: sand roller, extruding roller, iron roller, screen;Sand roller is set in extruding roller top;Iron roller is set in extruding roller below;Extruding roller is close to sand roller side and is opened with sieve hole;Extruding roller is opened with cavity inside;Screen is set in iron roller side away from extruding roller.Sand roller's peeling mode is mainly for milling, it is very easy to make rice grain produce scratch even lead to broken rice, influence final rice grain's quality, and iron roller's peeling is mainly for friction, relatively lower efficiency.Compared with prior art, the utility model is matched by sand roller, extruding roller and iron roller, so that material is higher in efficiency in peeling process, and final product is not easy to produce scratch or break, ensures product quality.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, and in particular to a grain dehulling machine for rice processing. Background Technology

[0002] In rice processing, grain hulling is a crucial step, directly impacting the quality and taste of the rice. As consumer demands for rice quality continue to rise, and with the large-scale, industrialized development of the rice processing industry, grain hulling technology is constantly evolving. Efficient and precise hulling techniques can increase rice yield and reduce nutrient loss, thereby enhancing the market competitiveness of rice products and playing a vital role in ensuring food security and meeting consumer needs. Furthermore, advanced hulling technology can reduce processing costs, increase production efficiency, and promote the sustainable development of the rice processing industry.

[0003] In traditional rice processing, using sand rollers is a common method to remove the husk from grains. Sand rollers have a rough surface and are connected to a motor, allowing friction between the roller and the grain to remove the husk. Alternatively, iron rollers are used. Iron rollers are harder, and their rotation exerts greater pressure on the grain, thus achieving husk removal.

[0004] However, the peeling method of sand rollers is mainly grinding, which can easily cause scratches on rice grains or even break rice, affecting the quality of the final rice grains. On the other hand, the peeling method of iron rollers is mainly friction, which is relatively inefficient. Utility Model Content

[0005] In view of the technical problems of the prior art, this utility model provides a grain dehulling machine for rice processing.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A grain dehulling machine for rice processing includes: a feeding hopper, a processing chamber, and a dehulling structure; the feeding hopper is disposed on the processing chamber; the dehulling structure is disposed inside the processing chamber; the dehulling structure includes: a sand roller, a pressing roller, an iron roller, and a screen; the sand roller is disposed above the pressing roller; the iron roller is disposed below the pressing roller; the pressing roller has a screen hole on the side near the sand roller; the pressing roller has a cavity inside; and the screen is disposed on the side of the iron roller away from the pressing roller.

[0008] Furthermore, the processing chamber includes: a discharge plate and a discharge roller; the discharge plate is disposed within the processing chamber; the discharge plate is inclined downwards from the side near the feed hopper to the side near the sand roller; the discharge roller is rotatably disposed on the side of the discharge plate near the sand roller; the discharge roller is connected to a motor; the discharge roller includes: a baffle; the baffle is circumferentially disposed on the outside of the discharge roller; the discharge plate includes: an arc-shaped groove; the arc-shaped groove matches the baffle.

[0009] Furthermore, the feed hopper includes: an inclined plate; the inclined plate is disposed on the side of the feed hopper near the interior of the processing chamber; the inclined plate slopes downward from the side near the discharge roller to the other side.

[0010] Furthermore, the processing chamber also includes: an arc plate and a conveyor plate; the arc plate is located on the side of the sand roller away from the discharge plate; the conveyor plate is located on the side of the arc plate away from the sand roller.

[0011] Furthermore, the processing chamber also includes: a guide plate and a limiting plate; the guide plate is located on the side of the arc plate near the sand roller; the guide plate is connected to the arc plate; the limiting plate is located below the guide plate; the limiting plate is connected to the extrusion roller.

[0012] Furthermore, the extrusion roller also includes: a feeding plate and a discharge port; the discharge port is located on the side of the extrusion roller away from the sand roller; the feeding plate is positioned below the screen holes; the feeding plate is inclined downwards from the side closest to the screen holes to the other side.

[0013] Furthermore, the processing chamber also includes: a guide plate and a collection trough; the guide plate is located below the screen; the collection trough is located on one side of the guide plate; the screen is inclined downwards from the side closest to the collection trough to the other side; the guide plate is inclined downwards from the side furthest from the collection trough to the other side.

[0014] The beneficial effects of this utility model are: by combining the sand roller, the extrusion roller and the iron roller, the material is processed with high efficiency during the peeling process, and the final product is less likely to be scratched or broken, thus ensuring product quality. Attached Figure Description

[0015] Figure 1 : A schematic diagram of the structure of this utility model;

[0016] Figure 2 : Partial structural cross-sectional view of this utility information;

[0017] Figure 3 : Figure 2 A partial structural diagram.

[0018] In the diagram: 1. Feed hopper; 11. Inclined plate; 2. Processing chamber; 21. Discharge plate; 211. Arc groove; 22. Discharge roller; 221. Baffle; 23. Arc plate; 24. Conveying plate; 25. Guide plate; 26. Limiting plate; 27. Flow guide plate; 28. Collection trough; 3. Peeling structure; 31. Sand roller; 32. Extrusion roller; 321. Screen hole; 322. Feeding plate; 323. Discharge port; 33. Iron roller; 34. Screen. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] according to Figure 1-3 This utility model provides a grain peeling machine for rice processing, including: a feeding hopper 1, a processing chamber 2, and a peeling structure 3.

[0021] The feed hopper 1 is located on the processing chamber 2; the peeling structure 3 is located inside the processing chamber 2; the peeling structure 3 includes: a sand roller 31, a pressing roller 32, an iron roller 33, and a screen 34; the sand roller 31 is located above the pressing roller 32; the iron roller 33 is located below the pressing roller 32; the pressing roller 32 has a screen hole 321 on the side near the sand roller 31; a cavity is formed inside the pressing roller 32; the screen 34 is located on the side of the iron roller 33 away from the pressing roller 32. The sand roller 31 is connected to a motor. The iron roller 33 is connected to a motor.

[0022] When it is necessary to peel the rice grains, the rice grains are added to the feed hopper 1, which allows them to enter the processing chamber 2 and fall between the sand roller 31 and the extrusion roller 32. At the same time, the motor is started, causing the sand roller 31 to rotate, so that the rice grains entering between the sand roller 31 and the extrusion roller 32 will be peeled by the sand roller 31. The peeled rice grains continue to fall and fall between the extrusion roller 32 and the iron roller 33. The motor is started, causing the iron roller 33 to rotate, so that the rice grains can be further peeled and polished between the extrusion roller 32 and the iron roller 33. The rice grains are first cleaned by a sanding roller 31 to remove most of the husks, then by an iron roller 33 to remove the remaining small portion of the husks and polish the grains. This polishes away the scratches caused by the sanding roller 31. The sanding roller 31 does not need to remove all the husks, thus minimizing its force on the grains and preventing breakage. The iron roller 33 only handles a small portion of the husks and polishing, requiring less time. Therefore, this invention is more efficient than using the iron roller 33 alone. Furthermore, the extrusion roller 32 works simultaneously with the sanding roller 31 and the iron roller 33, eliminating the need for an additional extrusion roller 32 and reducing overall space requirements. The extrusion roller 32 has sieve holes 321, allowing the husks to automatically enter the cavity of the extrusion roller 32 by gravity for collection. Some husks that move with the rice grains and detach from the iron roller 33 fall onto the sieve 34 after leaving the iron roller 33, separating the rice grains from the husks.

[0023] The processing chamber 2 includes: a discharge plate 21 and a discharge roller 22; the discharge plate 21 is disposed inside the processing chamber 2; the discharge plate 21 is inclined downwards from the side near the feed hopper 1 to the side near the sand roller 31; the discharge roller 22 is rotatably disposed on the side of the discharge plate 21 near the sand roller 31; the discharge roller 22 is connected to a motor; the discharge roller 22 includes: a baffle 221; the baffle 221 is circumferentially disposed on the outside of the discharge roller 22; the discharge plate 21 includes: an arc-shaped groove 211; the arc-shaped groove 211 matches the baffle 221. The feed hopper 1 includes: an inclined plate 11; the inclined plate 11 is disposed on the side of the feed hopper 1 near the interior of the processing chamber 2; the inclined plate 11 is inclined downwards from the side near the discharge roller 22 to the other side. The processing chamber 2 also includes: an arc plate 23 and a conveying plate 24; the arc plate 23 is disposed on the side of the sand roller 31 away from the discharge plate 21; the conveying plate 24 is disposed on the side of the arc plate 23 away from the sand roller 31. The processing chamber 2 also includes: a guide plate 25 and a limiting plate 26; the guide plate 25 is located on the side of the arc plate 23 near the sand roller 31; the guide plate 25 is connected to the arc plate 23; the limiting plate 26 is located below the guide plate 25; the limiting plate 26 is connected to the extrusion roller 32.

[0024] Rice grains entering the processing chamber 2 from the feed hopper 1 fall onto the discharge plate 21 and then slide down to the sand roller 31. A discharge roller 22 is also provided, with a baffle 221 circumferentially arranged on it. The discharge plate 21 has a corresponding arc-shaped groove 211. Even when the discharge roller 22 rotates, the baffle 221 at the arc-shaped groove 211 will adhere to the inner wall of the groove, thus blocking the rice grains. As the discharge roller 22 rotates, the baffle 221 sequentially adheres to the arc-shaped groove 211. When the discharge roller 22 rotates, the first baffle 221 pushes a certain amount of material toward the sand roller 31, the second baffle 221 blocks the subsequent material, and then the second baffle 221 pushes another certain amount of material toward the sand roller 31, the third baffle 221 blocks the subsequent material, and so on. This motor ensures that the rotational speed of the discharge roller 22 remains constant, resulting in a more uniform amount of material delivered to the sand roller 31 each time. This ensures that the appropriate amount of material is processed each time, avoiding both insufficient material affecting efficiency and excessive material making peeling difficult. The inclined plate 11 of the feed hopper 1 slopes downwards from the side closest to the discharge roller 22 to the other side, ensuring that the material falling from the feed hopper 1 reaches the side of the discharge roller 22 away from the sand roller 31, preventing some material from splashing over the discharge roller 22. After passing through the sand roller 31, the material reaches the iron roller 33. The arc plate 23 and the conveyor plate 24 cause the material to first turn at the arc plate 23 before being conveyed onto the iron roller 33. This prevents damage from impact. Furthermore, the material flow rate impacting the conveyor plate 24 is difficult to control; the arc plate 23 reduces the impact force, resulting in a more uniform material flow rate. The guide plate 25 and the limiting plate 26 ensure that the material leaving the sand roller 31 reaches between them, allowing it to contact the arc plate 23 as much as possible for turning.

[0025] The extrusion roller 32 also includes: a feeding plate 322 and a discharge port 323; the discharge port 323 is located on the side of the extrusion roller 32 away from the sand roller 31; the feeding plate 322 is located below the screen hole 321; the feeding plate 322 is inclined downward from the side near the screen hole 321 to the other side. The processing chamber 2 also includes: a guide plate 27 and a collection trough 28; the guide plate 27 is located below the screen 34; the collection trough 28 is located on one side of the guide plate 27; the screen 34 is inclined downward from the side near the collection trough 28 to the other side; the guide plate 27 is inclined downward from the side away from the collection trough 28 to the other side.

[0026] The discharge port 323 on the extrusion roller 32 allows the rice husks entering the cavity to slide down the feeding plate 322 and be discharged through the discharge port 323, thus preventing the cavity from being unable to hold a large amount of rice husks. A guide plate 27 is provided below the screen 34 so that the rice husks falling from the screen 34 can be conveyed to the collection trough 28. The collection trough 28 can be located at the point where the rice husks fall from the end of the feeding plate 322, allowing for simultaneous collection of rice husks from both locations. Outlets can be provided at the end of the screen 34 and on one side of the collection trough 28 to facilitate the discharge of rice grains and rice husks.

[0027] In summary, this utility model, through the combination of sand rollers, extrusion rollers and iron rollers, enables high efficiency in the peeling process of materials, and the final product is less prone to scratches or breakage, thus ensuring product quality.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A grain dehulling machine for rice processing, characterized in that: include: Feed hopper, processing chamber, peeling structure; The feed hopper is located on the processing chamber; The peeling structure is located inside the processing chamber; The peeling structure includes: a sanding roller, a pressing roller, an iron roller, and a screen; The sand roller is positioned above the extrusion roller; The iron roller is positioned below the extrusion roller; The extrusion roller has sieve holes on the side near the sand roller; The extrusion roller has a cavity inside; The screen is positioned on the side of the iron roller away from the extrusion roller.

2. The grain dehulling machine for rice processing as described in claim 1, characterized in that: The processing chamber includes: a discharge plate and a discharge roller; The discharge plate is located inside the processing chamber; The discharge plate is inclined downward from the side near the feed hopper to the side near the sand roller; The discharge roller is rotatably mounted on the discharge plate near the sand roller. The discharge roller is connected to the motor; The discharge roller includes: a baffle; The baffle is circumferentially disposed on the outside of the discharge roller; The discharge plate includes: an arc-shaped groove; The arc-shaped groove matches the baffle.

3. A grain dehulling machine for rice processing as described in claim 2, characterized in that: The feed hopper includes: an inclined plate; The inclined plate is disposed on the side of the feed hopper near the interior of the processing chamber; The inclined plate slopes downwards from one side near the discharge roller to the other side.

4. A grain dehulling machine for rice processing as described in claim 2, characterized in that: The processing chamber also includes: an arc plate and a material conveying plate; The arc plate is disposed on the side of the sand roller away from the discharge plate; The feed plate is positioned on the side of the arc plate away from the sand roller.

5. A grain dehulling machine for rice processing as described in claim 4, characterized in that: The processing chamber also includes: a guide plate and a limiting plate; The guide plate is disposed on the side of the arc plate near the sand roller; The guide plate is connected to the arc plate; The limiting plate is disposed below the guide plate; The limiting plate is connected to the extrusion roller.

6. A grain dehulling machine for rice processing as described in claim 1, characterized in that: The extrusion roller also includes: a feeding plate and a discharge port; The discharge port is located on the side of the extrusion roller away from the sand roller; The feeding plate is positioned below the sieve holes; The feeding plate is inclined downwards from one side near the screen hole to the other side.

7. A grain dehulling machine for rice processing as described in claim 1, characterized in that: The processing chamber also includes: a flow guide plate and a collection tank; The guide plate is positioned below the screen. The collection trough is located on one side of the guide plate; The screen is inclined downwards from one side near the collection trough to the other side; The guide plate slopes downwards from one side away from the collection trough to the other side.

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