A rice processing impurity removing and screening device

Abstract

The utility model provides a kind of impurity screening device for rice processing belongs to rice processing technical field;Including:Screening bottom plate, the upper wall surface of screening bottom plate is equipped with screening outer box structure, the inside movable installation of screening outer box structure is equipped with through -hole structure, the inside movable installation of screening outer box structure is equipped with screening structure, the rear wall surface of screening outer box structure is equipped with power structure;This device is divided into screening drum and through -hole drum and rotates in the same speed same direction opposite, can make the position of screening drum and through -hole drum contact keep relative stationary, avoid friction, can the service life of this device to some extent, and the through -hole drum of this device can be inserted into the screen hole of screening drum, can guarantee to clean screen hole.

Description

Technical Field

[0001] This utility model belongs to the field of rice processing technology, specifically relating to a purification and screening device for rice processing. Background Technology

[0002] Rice processing refers to the systematic process of removing impurities from paddy rice, grading, dehulling to separate the bran, milling (removing the bran and germ), polishing, color sorting, grading (classified by the broken rice rate), and packaging and storage, ultimately producing finished products such as polished rice, brown rice, or germ rice that meet food standards. Its core objective is to remove the husk, bran, and impurities from the rice through physical or chemical methods, thereby improving the taste, appearance, and storage stability of the rice, while preserving or enhancing its nutritional value.

[0003] The impurity removal process in rice processing requires separating impurities mixed in with the rice to obtain cleaner raw rice, thus facilitating subsequent processing steps. One proposed impurity removal and screening device for rice processing, with announcement number CN222035650U, features an arc-shaped top block that fits snugly against a perforated screen cylinder. The top of the arc-shaped top block aligns with the screen holes on the perforated screen cylinder. When sand or gravel becomes stuck in the screen holes, the downward pressure from the top of the arc-shaped top block dislodges the sand and gravel, preventing further blockage. However, the relative speed between the bottom of the arc-shaped top block and the perforated screen cylinder causes friction, affecting its lifespan. Furthermore, the arc-shaped top block can only rest on the outer wall of the perforated screen cylinder and cannot penetrate into the screen holes, making it unable to remove impurities stuck inside. Utility Model Content

[0004] To address the issue in existing technologies where the arc-shaped top block and the perforated screen cylinder have relative speeds, leading to friction and affecting service life, this invention provides a rice processing impurity removal and screening device. In this device, the screening roller and the perforated roller rotate at the same speed but in opposite directions, keeping their contact points relatively stationary and preventing friction. This extends the device's lifespan to some extent. The specific technical solution is as follows: A rice processing impurity removal and screening device includes: a screening base plate; a screening outer box structure is mounted on the upper wall of the screening base plate; a perforated structure is movably mounted inside the screening outer box structure; a screening structure is movably mounted inside the screening outer box structure; and a power structure is mounted on the rear wall of the screening outer box structure. The perforated structure includes: two perforated support shafts, a perforated roller, and a synchronous driven gear. The two perforated support shafts are movably mounted inside the screening outer box structure via bearings; the perforated roller is mounted between the two perforated support shafts; and the synchronous driven gear is fixedly mounted outside the perforated support shafts.

[0005] Preferably, the screening outer box structure includes: two screening support plates, a screening box body, and two fixing pins; the two screening support plates are respectively installed on the upper wall of the screening bottom plate, the screening box body is movably installed between the two screening support plates via a shaft, and the two fixing pins are movably installed between the two screening support plates and the screening box body.

[0006] Preferably, the screening structure includes: a screening roller, a synchronous drive gear, a screening shaft, and a rolling support ring; the screening shaft is movably mounted on the rear wall of the screening box via bearings, the screening roller is fixedly mounted on the front wall of the screening shaft, and the screening roller is movably mounted on the front wall of the screening box via the rolling support ring; the synchronous drive gear is fixedly mounted on the outside of the screening shaft, and the synchronous drive gear and the synchronous driven gear mesh.

[0007] Preferably, the power structure includes: a power motor and a motor frame; the motor frame is installed on the rear wall of the screening box, the power motor is fixedly installed inside the motor frame, and the drive end of the power motor is connected to the screening shaft.

[0008] Preferably, the lower wall of the screening box is provided with a material leakage clearance groove.

[0009] Preferably, a storage box is movably installed on the upper wall of the screening base plate.

[0010] Preferably, the outside of the through-hole roller is provided with a plurality of through-hole nails, and the outer diameter of the plurality of through-hole nails is the same as the diameter of the sieve hole of the screening roller.

[0011] Preferably, a sealing cover is installed inside the screening roller via a threaded connection.

[0012] Preferably, the screening roller is fitted with a relatively fixed handle on its exterior.

[0013] The present invention relates to a rice processing impurity removal and screening device. Compared with the prior art, the advantages of this device are as follows: the rice processing impurity removal and screening device consists of a screening roller and a perforated roller that rotate at the same speed but in opposite directions. This allows the contact points of the screening roller and the perforated roller to remain relatively stationary, avoiding friction and extending the service life of the device to a certain extent. Furthermore, the perforated roller can be inserted into the sieve holes of the screening roller, ensuring that the sieve holes are thoroughly cleaned. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of the rice processing impurity removal and screening device provided by this utility model;

[0015] Figure 2A partial structural diagram of the rice processing impurity removal and screening device provided by this utility model;

[0016] Figure 3 A partial structural diagram of the rice processing impurity removal and screening device provided by this utility model;

[0017] Figure 4 An exploded view of the third partial structure of the rice processing impurity removal and screening device provided by this utility model;

[0018] in, Figures 1 to 4 The attached diagram and components of the rice processing impurity removal and screening device are as follows: 1. Screening base plate; 2. Through-hole support shaft; 3. Through-hole roller; 4. Synchronous driven gear; 5. Screening support plate; 6. Screening box; 7. Fixed pin; 8. Screening roller; 9. Synchronous drive gear; 10. Screening shaft; 11. Rolling support ring; 12. Power motor; 13. Motor frame; 14. Storage box; 15. Through-hole nail; 16. Sealing cover plate; 17. Relative fixed handle. Detailed Implementation

[0019] The following are specific implementation cases and appendices. Figures 1-4 The present invention will be further described below, but it is not limited to these embodiments. The present invention provides a technical solution: a rice processing impurity removal and screening device, comprising: a screening base plate 1, a screening outer box structure installed on the upper wall of the screening base plate 1, a through hole structure movably installed inside the screening outer box structure, a screening structure movably installed inside the screening outer box structure, and a power structure installed on the rear wall of the screening outer box structure; the through hole structure includes: two through hole support shafts 2, a through hole roller 3, and a synchronous driven gear 4; the two through hole support shafts 2 are respectively movably installed inside the screening outer box structure through bearings, the through hole roller 3 is installed between the two through hole support shafts 2, the synchronous driven gear 4 is fixedly installed outside the through hole support shafts 2, a storage box 14 is movably installed on the upper wall of the screening base plate 1, and a plurality of through hole nails 15 are provided on the outside of the through hole roller 3, the outer diameter of the plurality of through hole nails 15 being the same as the sieve hole diameter of the screening roller 8.

[0020] As a preferred embodiment, the outer screening box structure further includes: two screening support plates 5, a screening box body 6, and two fixing pins 7; the two screening support plates 5 are respectively installed on the upper wall of the screening bottom plate 1, the screening box body 6 is movably installed between the two screening support plates 5 via a shaft, the two fixing pins 7 are movably installed between the two screening support plates 5 and the screening box body 6, and the lower wall of the screening box body 6 is provided with a material leakage clearance groove.

[0021] As a preferred embodiment, the screening structure further includes: a screening roller 8, a synchronous drive gear 9, a screening shaft 10, and a rolling support ring 11; the screening shaft 10 is movably mounted on the rear wall of the screening box 6 via bearings, the screening roller 8 is fixedly mounted on the front wall of the screening shaft 10, and the screening roller 8 is movably mounted on the front wall of the screening box 6 via the rolling support ring 11, the synchronous drive gear 9 is fixedly mounted on the outside of the screening shaft 10, and the synchronous drive gear 9 and the synchronous driven gear 4 mesh with each other, a sealing cover plate 16 is movably mounted inside the screening roller 8 via threads, and a relatively fixed handle 17 is mounted on the outside of the screening roller 8.

[0022] As a preferred embodiment, the power structure further includes a power motor 12 and a motor frame 13; the motor frame 13 is installed on the rear wall of the screening box 6, the power motor 12 is fixedly installed inside the motor frame 13, and the drive end of the power motor 12 is connected to the screening shaft 10.

[0023] Working principle: Before using this device, the operator first connects the external AC power supply to the device. The device provides power to the electrical equipment and connects the matching controller to the electrical equipment to provide control and working logic.

[0024] During screening, the operator first removes the two fixing pins 7. Under gravity, the screening box 6 rotates around the shaft holes of the two screening support plates 5, keeping the screening roller 8 upright. The operator then removes the sealing cover 16 by twisting it. To prevent the sealing cover 16 and the screening roller 8 from rotating simultaneously, the operator uses the relatively fixed handle 17 to keep the screening roller 8 relatively stationary. After removing the sealing cover 16, the operator fills the rice that needs impurity removal into the screening roller 8, and then reinstalls the sealing cover 16 back into the screening roller 8 using the threaded connection. Next, the operator rotates the screening box 6 and inserts the two fixing pins 7 back into their original positions, fixing the two screening support plates 5 and the screening box 6 relatively in place.

[0025] Next, the operator starts the power motor 12. The drive end of the power motor 12 rotates, which drives the screening shaft 10 to rotate. Since the screening shaft 10 and the screening drum 8 are fixedly connected, the screening drum 8 also rotates. At the same time, the synchronous drive gear 9 also rotates. Under the meshing between the gears, the synchronous driven gear 4 also rotates. The synchronous driven gear 4 drives the two through-hole support shafts 2 and the through-hole drum 3 to rotate in the opposite direction at the same angular velocity as the screening drum 8.

[0026] When the screening roller 8 rotates, it can remove impurities from the rice inside. Small-diameter impurities will pass through the screening roller 8 and finally enter the storage box 14. At the same time, when the screening roller 8 rotates, it will fit synchronously with the through-hole roller 3. The through-hole nail 15 on the outside of the through-hole roller 3 will be inserted into the screening hole of the screening roller 8, which can effectively prevent the screening roller 8 from becoming blocked.

[0027] After the small-diameter impurity removal is completed, the operator stops the power motor 12, then removes the two fixing pins 7, removes the sealing cover 16, and rotates the screening box 6 to allow the rice that has been impurity removed to pour out from the screening drum 8.

[0028] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., 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 utility model 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 utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any 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 processing impurity removal and screening device, comprising: The screening base plate (1) is characterized in that a screening outer box structure is installed on the upper wall of the screening base plate (1), a through hole structure is movably installed inside the screening outer box structure, a screening structure is movably installed inside the screening outer box structure, and a power structure is installed on the rear wall of the screening outer box structure; the through hole structure includes: two through hole support shafts (2), a through hole roller (3), and a synchronous driven gear (4); the two through hole support shafts (2) are respectively movably installed inside the screening outer box structure through bearings, the through hole roller (3) is installed between the two through hole support shafts (2), and the synchronous driven gear (4) is fixedly installed outside the through hole support shafts (2).

2. The rice processing impurity removal and screening device according to claim 1, characterized in that, The screening outer box structure includes: two screening support plates (5), a screening box body (6) and two fixing pins (7); the two screening support plates (5) are respectively installed on the upper wall of the screening bottom plate (1), the screening box body (6) is movably installed between the two screening support plates (5) through a shaft, and the two fixing pins (7) are movably installed between the two screening support plates (5) and the screening box body (6).

3. The rice processing impurity removal and screening device according to claim 1, characterized in that, The screening structure includes: a screening roller (8), a synchronous drive gear (9), a screening shaft (10), and a rolling support ring (11); the screening shaft (10) is movably mounted on the rear wall of the screening box (6) via bearings, the screening roller (8) is fixedly mounted on the front wall of the screening shaft (10), and the screening roller (8) is movably mounted on the front wall of the screening box (6) via the rolling support ring (11), the synchronous drive gear (9) is fixedly mounted on the outside of the screening shaft (10), and the synchronous drive gear (9) and the synchronous driven gear (4) mesh together.

4. The rice processing impurity removal and screening device according to claim 1, characterized in that, The power structure includes a power motor (12) and a motor frame (13); the motor frame (13) is installed on the rear wall of the screening box (6), the power motor (12) is fixedly installed inside the motor frame (13), and the drive end of the power motor (12) is connected to the screening shaft (10).

5. The rice processing impurity removal and screening device according to claim 2, characterized in that, The lower wall of the screening box (6) is provided with a material leakage clearance groove.

6. The rice processing impurity removal and screening device according to claim 1, characterized in that, A storage box (14) is movably installed on the upper wall of the screening base plate (1).

7. The rice processing impurity removal and screening device according to claim 1, characterized in that, The through-hole roller (3) is provided with a number of through-hole nails (15) on its outside, and the outer diameter of the number of through-hole nails (15) is the same as the diameter of the sieve hole of the screening roller (8).

8. The rice processing impurity removal and screening device according to claim 3, characterized in that, The screening drum (8) is fitted with a sealing cover plate (16) via a threaded connection.

9. The rice processing impurity removal and screening device according to claim 3, characterized in that, The screening roller (8) is equipped with a relatively fixed handle (17) on its exterior.

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