A rice bran removing device for selenium-rich rice processing

Abstract

The application relates to the technical field of rice processing and production, and discloses a rice bran removing device for selenium-rich rice processing and production, which comprises a processing box, a feeding port is arranged at the top of the processing box, a discharging port is arranged at the bottom of the processing box, supporting legs are fixedly connected to the bottom of the processing box, fans are arranged on the left and right sides of the processing box, a plurality of polishing brushes driven by double rotating shafts are arranged, the rotating range of the polishing brushes can cover most of the area of the screen, the polishing dead angle is greatly reduced, each rice grain can be fully polished, the cleanliness of the removed bran and impurities is remarkably improved, the polishing brushes are used for fully rubbing and polishing the rice in high-speed rotation, the abutting plate fixed to the connecting sleeve periodically abuts against and lifts the screen, the screen is subjected to high-frequency up-and-down shaking, the rice layer on the screen can be instantaneously shaken and loosened, the rice pressed on the bottom layer is turned to the surface, the polishing has no dead angle, and the uniformity and completeness of the removed bran are improved.

Description

Technical Field

[0001] This invention relates to the field of rice processing technology, specifically to a rice bran removal device for processing selenium-enriched rice. Background Technology

[0002] During the rice production and processing, unscreened rice husks and bran powder may be mixed in with the rice, resulting in a decrease in the cleanliness of the rice.

[0003] For example, CN220531686U discloses a rice polishing machine, including a feed hopper. A feed pipe is located on the left side of the feed hopper, and a drive motor is located above the feed hopper. Multiple polishing rollers are installed inside the feed hopper. This utility model's technical solution involves pouring rice into the feed pipe from the feed inlet at the top. The protective plate, influenced by the weight of the rice, rotates downwards, causing the rice to fall onto a filter plate. The rice passes through the filter plate, filtering out some impurities and broken rice. Then, it enters the feed hopper through a through-hole. The drive motor drives the polishing rollers to rotate, polishing the rice. During the polishing process, impurities and broken rice in the feed pipe can be discharged by pulling a baffle plate. Simultaneously, the filter plate can be pulled out for cleaning the filter holes to prevent clogging.

[0004] During polishing, rice may accumulate at the bottom, creating dead corners that cannot be polished, resulting in poor removal of rice bran powder. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rice bran removal device for processing selenium-enriched rice, which addresses the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a rice bran removal device for processing selenium-enriched rice, comprising a processing box, an inlet at the top of the processing box, an outlet at the bottom of the processing box, a support leg fixedly connected to the bottom of the processing box, fans respectively arranged on the left and right sides of the processing box, a screen with holes inside the processing box, and a polishing mechanism inside the processing box, the polishing mechanism including a motor fixedly connected to the left side of the processing box, the output end of the motor being fixedly connected to a rotating shaft via a coupling, the rotating shaft moving through the processing box and extending outward, a gear fixedly connected to the outer wall of the rotating shaft, a connecting sleeve movably fitted onto the outer wall of the rotating shaft, and several polishing brushes fixedly connected to the outer wall of the connecting sleeve.

[0007] Preferably, there are two rotating shafts, and the two rotating shafts are meshed with each other by gears.

[0008] Preferably, the inner wall of the processing box is provided with a sliding groove, a slider is slidably connected inside the sliding groove, a first spring is fixedly connected between the slider and the sliding groove, the slider is fixedly connected to the screen, and an abutment plate is fixedly connected to the outer wall of the connecting sleeve, the abutment plate and the screen.

[0009] Preferably, a first fixed plate is fixedly connected inside the processing box, a second spring is fixedly connected to the top of the first fixed plate, and a striking ball is fixedly connected to the top of the second spring. The striking ball contacts the screen. First, the power supply of the device is turned on, so that the motor and fan start working. The selenium-enriched rice to be polished is put into the feed port at the top of the processing box. The rice falls into the screen and spreads evenly. The motor drives the rotating shaft to rotate, and through two meshing gears, it drives two rotating shafts and their connecting sleeves and polishing brushes to rotate in opposite directions. The high-speed rotating polishing brushes brush and tumble the rice on the screen, rubbing away the bran powder on its surface. During the rotation of the rotating shaft, the abutment plate fixed on the connecting sleeve rotates accordingly and periodically abuts and lifts the screen. The sliders on both sides of the screen slide in the groove and compress the first spring; when the abutment plate rotates past, the screen falls rapidly under the reset action of the first spring. This process repeats itself, causing the screen to vibrate up and down at a high frequency and in a regular pattern. This vibration has multiple functions: firstly, it loosens the rice layer, causing the rice to tumble and ensuring thorough polishing; secondly, the vibration causes the polished bran and fine impurities to fall through the holes in the screen. Simultaneously, the fans on both sides of the processing box operate, generating airflow that blows out and collects the falling light bran, while the larger rice grains remain on the screen for further polishing, thus achieving effective air separation. During operation, a second spring fixed to the first fixed plate on the inner wall of the processing box drives a striking ball. With slight vibrations of the box or the movement of the screen, the ball irregularly strikes the screen, generating additional vibration force as an auxiliary means of clearing blockages and further ensuring the unobstructed flow of the holes.

[0010] Preferably, the processing box is provided with a lateral displacement mechanism, which includes a third spring that is sleeved on the outer wall of the rotating shaft.

[0011] Preferably, an abutment rod is fixedly connected to the left side of the connecting sleeve, and an abutment block is fixedly connected to the inner wall of the processing box, with the abutment block in contact with the abutment rod.

[0012] Preferably, there are two lateral displacement mechanisms, each disposed on the outer wall of one of the two connecting sleeves. The lateral displacement mechanisms begin to operate as the connecting sleeves rotate with the shaft. A third spring, fitted onto the outer wall of the shaft, provides elastic force. When the abutment rod fixed to the connecting sleeve contacts the inclined surface of the abutment block fixed to the inner wall during rotation, the connecting sleeve and polishing brush are forced to compress the third spring and generate axial displacement. After the abutment rod passes the abutment block, the connecting sleeve and polishing brush move in opposite directions under the restoring action of the third spring. This process causes the polishing brush to reciprocate axially while rotating, thus covering a wider area and eliminating axial polishing dead angles. The lateral displacement of the polishing brush brings additional horizontal force to the rice grains, making the movement of the rice grains on the screen more complex and random, increasing the probability and uniformity of contact between the rice grains and the polishing brush, avoiding local over-polishing or under-polishing, and making the removal of bran powder more uniform and thorough. The fact that the polishing brush can move left and right along the axis of rotation while rotating greatly expands the actual working range of a single set of polishing brushes, and can clean rice grains in areas that were originally between the brushes and not covered, fundamentally solving the problem of axial polishing dead angles.

[0013] Preferably, the processing box is provided with a pushing mechanism, which includes a second fixing plate fixedly connected to the inner wall of the processing box, and a vertical plate fixedly connected to the top of the screen.

[0014] Preferably, a sliding rod is fixedly connected to the front of the vertical plate, a push plate is movably sleeved on the outer wall of the sliding rod, a connecting rod is hinged between the push plate and the second fixed plate, and the push plate is in contact with the screen.

[0015] Preferably, there are two pushing mechanisms, which are respectively located on the front and rear sides of the processing box. The up-and-down vibration of the screen simultaneously drives the pushing mechanisms. When the screen vibrates, the vertical plate and slide rod fixed to it move up and down accordingly. The push plate on the slide rod is hinged to the second fixed plate through a connecting rod. This linkage mechanism converts the up-and-down vibration of the screen into the horizontal back-and-forth reciprocating motion of the push plate along the slide rod. The movement of the push plate continuously pushes the rice accumulated at the edge or bottom of the screen back to the main working area of ​​the polishing brush and scrapes away any impurities that may be attached to the screen surface, preventing blockage. The reciprocating motion of the push plate can actively push the rice that easily accumulates at the edge or bottom corner of the screen to the main working area of ​​the polishing brush. In particular, it can effectively deal with the dead corners formed between the screen and the side wall of the box, ensuring that all rice can be sent to the polishing area for processing, greatly improving the processing efficiency and thoroughness of the equipment.

[0016] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This rice bran removal device for processing selenium-enriched rice employs multiple polishing brushes driven by dual rotating shafts. Its rotation range covers most of the screen area, significantly reducing polishing dead angles and ensuring each grain of rice is fully polished. This significantly improves the cleanliness of removing bran and impurities. While the polishing brushes rotate at high speed to thoroughly rub and polish the rice, the contact plate fixed to the connecting sleeve periodically abuts and lifts the screen, causing it to vibrate at a high frequency. This instantly loosens the rice layer on the screen, bringing the rice at the bottom to the surface, ensuring no dead angles in the polishing process and improving the uniformity and thoroughness of bran removal. Furthermore, it effectively shakes off bran and fine impurities clogging the screen holes, keeping the screen unobstructed and fundamentally avoiding the problem of reduced screening efficiency caused by screen clogging. This achieves simultaneous polishing and cleaning.

[0017] 2. This rice bran removal device for processing selenium-enriched rice introduces additional horizontal force to the rice grains through the lateral displacement of the polishing brush. This makes the movement of the rice grains on the screen more complex and random, increasing the contact probability and uniformity between the rice grains and the polishing brush. It avoids local over-polishing or under-polishing, resulting in a more uniform and thorough removal of bran powder. As the polishing brush rotates, it can move left and right along the axis of rotation, greatly expanding the actual working range of a single set of polishing brushes. This allows it to clean rice grains in areas that were originally between the brushes and not covered, fundamentally solving the problem of dead angles in axial polishing.

[0018] 3. This rice bran removal device for processing selenium-enriched rice can actively push rice that easily accumulates at the edge or bottom corner of the screen to the main working area of ​​the polishing brush through the reciprocating motion of the push plate. In particular, it can effectively deal with the dead corners formed between the screen and the side wall of the box, ensuring that all rice can be sent into the polishing area for processing, which greatly improves the processing efficiency and thoroughness of the equipment. Attached Figure Description

[0019] Figure 1 This is a front view of the structure of the present invention; Figure 2 This is a rear view of the structure of the present invention; Figure 3 This is a first cross-sectional view of the structure of the present invention; Figure 4 This is a second cross-sectional view of the structure of the present invention; Figure 5 This is a third sectional view of the structure of the present invention; Figure 6 This is the fourth sectional view of the structure of the present invention; Figure 7 This is the fifth cross-sectional view of the structure of the present invention.

[0020] In the diagram: 1. Processing box; 2. Feed inlet; 3. Discharge outlet; 4. Support leg; 5. Fan; 61. Screen; 62. Hole; 7. Polishing mechanism; 711. Motor; 712. Rotating shaft; 713. Connecting sleeve; 714. Polishing brush; 715. Gear; 716. Slide groove; 717. Slider; 718. First spring; 719. Abutting plate; 720. First fixed plate; 721. Second spring; 722. Striking ball; 8. Lateral displacement mechanism; 811. Third spring; 812. Abutting rod; 813. Abutting block; 9. Pushing mechanism; 911. Second fixed plate; 912. Vertical plate; 913. Slide rod; 914. Push plate; 915. Connecting rod. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-7One embodiment of the present invention is: a rice bran removal device for processing selenium-enriched rice, comprising a processing box 1, an inlet 2 at the top of the processing box 1, an outlet 3 at the bottom of the processing box 1, a support leg 4 fixedly connected to the bottom of the processing box 1, fans 5 respectively arranged on the left and right sides of the processing box 1, a screen 61 with holes 62 inside the processing box 1, and a polishing mechanism 7 inside the processing box 1, the polishing mechanism 7 including a motor 711, the motor 711 fixedly connected to the left side of the processing box 1, the output end of the motor 711 fixedly connected to a rotating shaft 712 via a coupling, the rotating shaft 712 movably passing through the processing box 1 and extending outward, a gear 715 fixedly connected to the outer wall of the rotating shaft 712, and a connecting sleeve 713 movably sleeved on the outer wall of the rotating shaft 712. The outer wall of the connecting sleeve 713 is fixedly connected with several polishing brushes 714. There are two rotating shafts 712, which mesh with each other through gears 715. The inner wall of the processing box 1 is provided with a sliding groove 716. A slider 717 is slidably connected inside the sliding groove 716. A first spring 718 is fixedly connected between the slider 717 and the sliding groove 716. The slider 717 is fixedly connected to the screen 61. A contact plate 719 is fixedly connected to the outer wall of the connecting sleeve 713. The contact plate 719 is connected to the screen 61. A first fixing plate 720 is fixedly connected inside the processing box 1. A second spring 721 is fixedly connected to the top of the first fixing plate 720. A striking ball 722 is fixedly connected to the top of the second spring 721. The striking ball 722 contacts the screen 61. First, start the device power supply to make the motor 711 and the fan 5 start working. The selenium-enriched rice to be polished is fed into the feed port 2 at the top of the processing box 1. The rice immediately falls and spreads evenly on the screen 61. The motor 711 drives the rotating shaft 712 to rotate, which in turn drives the two rotating shafts 712, the connecting sleeve 713 and the polishing brush 714 to rotate in opposite directions through two meshing gears 715. The high-speed rotating polishing brush 714 brushes and tumbles the rice on the screen 61, rubbing away the bran powder on its surface. During the rotation of the rotating shaft 712, the abutment plate 719 fixed on the connecting sleeve 713 rotates accordingly and periodically abuts and lifts the screen 61. The sliders 717 on both sides of the screen 61 slide in the groove 716 and compress the first spring 718. When the abutment plate 719 rotates, the screen 61 falls rapidly under the reset action of the first spring 718.This process repeats itself, causing the screen 61 to vibrate up and down at a high frequency and in a regular manner. The up and down vibration of the screen 61 has multiple functions: firstly, it loosens the rice layer, causing the rice to tumble and ensuring that there are no dead corners in the polishing process; secondly, the vibration causes the bran powder and fine impurities that are polished off to fall through the holes 62 on the screen 61. At the same time, the fans 5 set on both sides of the processing box 1 work to generate airflow, blowing out and collecting the falling light bran powder, while the larger rice grains remain on the screen 61 to continue to be polished, thus achieving effective air separation. During the operation of the device, the second spring 721 fixed on the first fixed plate 720 on the inner wall of the processing box 1 drives the striking ball 722. With the slight vibration of the box or the movement of the screen 61, the screen 61 is irregularly struck, generating additional vibration force as an auxiliary means of clearing blockages and further ensuring the unobstructed flow of the holes 62.

[0023] Working Principle: First, the power supply to the device is turned on, causing the motor 711 and fan 5 to start working. The selenium-enriched rice to be polished is fed into the feed inlet 2 at the top of the processing box 1. The rice immediately falls and spreads evenly on the screen 61. The motor 711 drives the rotating shaft 712 to rotate, which, through two meshing gears 715, drives the two rotating shafts 712, their connecting sleeves 713, and the polishing brush 714 to rotate in opposite directions. The high-speed rotating polishing brush 714 brushes and tumbles the rice on the screen 61, rubbing away the bran powder on its surface. During the rotation of the rotating shaft 712, the contact plate 719 fixed to the connecting sleeve 713 rotates accordingly, periodically contacting and lifting the screen 61. The sliders 717 on both sides of the screen 61 slide within the grooves 716, compressing the first spring 718. When the contact plate 719 rotates past, the screen 61 quickly falls under the restoring action of the first spring 718. This process repeats itself, causing the screen 61 to vibrate up and down at a high frequency and in a regular manner. The up and down vibration of the screen 61 has multiple functions: firstly, it loosens the rice layer, causing the rice to tumble and ensuring that there are no dead corners in the polishing process; secondly, the vibration causes the bran powder and fine impurities that are polished off to fall through the holes 62 on the screen 61. At the same time, the fans 5 set on both sides of the processing box 1 work to generate airflow, blowing out and collecting the falling light bran powder, while the larger rice grains remain on the screen 61 to continue to be polished, thus achieving effective air separation. During the operation of the device, the second spring 721 fixed on the first fixed plate 720 on the inner wall of the processing box 1 drives the striking ball 722. With the slight vibration of the box or the movement of the screen 61, the screen 61 is irregularly struck, generating additional vibration force as an auxiliary means of clearing blockages and further ensuring the unobstructed flow of the holes 62.

[0024] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, a lateral displacement mechanism 8 is provided inside the processing box 1. The lateral displacement mechanism 8 includes a third spring 811, which is sleeved on the outer wall of the rotating shaft 712. An abutment rod 812 is fixedly connected to the left side of the connecting sleeve 713, and an abutment block 813 is fixedly connected to the inner wall of the processing box 1. The abutment block 813 contacts the abutment rod 812. There are two lateral displacement mechanisms 8, which are respectively arranged on the outer walls of the two connecting sleeves 713. The lateral displacement mechanism 8 starts to work while the connecting sleeve 713 rotates with the rotating shaft 712. The third spring 811 sleeved on the outer wall of the rotating shaft 712 provides elastic force. When the abutment rod 812, fixed to the connecting sleeve 713, contacts the inclined surface of the abutment block 813 fixed to the inner wall during rotation, the connecting sleeve 713 and the polishing brush 714 are forced to compress the third spring 811 and generate axial displacement. After the abutment rod 812 passes the abutment block 813, the connecting sleeve 713 and the polishing brush 714 move in opposite directions under the reset action of the third spring 811. This process causes the polishing brush 714 to perform axial reciprocating motion while rotating, thereby covering a wider area and eliminating axial polishing dead angles.

[0025] Working principle: As the connecting sleeve 713 rotates with the rotating shaft 712, the lateral displacement mechanism 8 begins to operate. A third spring 811, sleeved on the outer wall of the rotating shaft 712, provides elastic force. When the abutment rod 812, fixed to the connecting sleeve 713, contacts the inclined surface of the abutment block 813 fixed to the inner wall during rotation, the connecting sleeve 713 and the polishing brush 714 are forced to compress the third spring 811, generating axial lateral displacement. After the abutment rod 812 passes the abutment block 813, under the restoring action of the third spring 811, the connecting sleeve 713 and the polishing brush 714 move in opposite directions. This process causes the polishing brush 714 to perform axial reciprocating motion while rotating, thereby covering a wider area and eliminating axial polishing dead angles.

[0026] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, a pushing mechanism 9 is provided inside the processing box 1. The pushing mechanism 9 includes a second fixed plate 911, which is fixedly connected to the inner wall of the processing box 1. A vertical plate 912 is fixedly connected to the top of the screen 61, and a sliding rod 913 is fixedly connected to the front of the vertical plate 912. A push plate 914 is movably sleeved on the outer wall of the sliding rod 913. A connecting rod 915 is hinged between the push plate 914 and the second fixed plate 911. The push plate 914 contacts the screen 61. There are two pushing mechanisms 9, which are respectively arranged on the front and rear sides inside the processing box 1. The up-and-down vibration of the screen 61 simultaneously drives the pushing mechanism 9. When the screen 61 vibrates, the vertical plate 912 and the sliding rod 913 fixed on it move up and down accordingly. The push plate 914 on the slide rod 913 is hinged to the second fixed plate 911 via a connecting rod 915. This linkage mechanism converts the up-and-down vibration of the screen 61 into the horizontal reciprocating motion of the push plate 914 along the slide rod 913. The movement of the push plate 914 continuously pushes the rice accumulated at the edge or bottom of the screen 61 back to the main working area of ​​the polishing brush 714 and scrapes away any impurities that may be attached to the surface of the screen 61, preventing clogging.

[0027] Working principle: The up-and-down vibration of the screen 61 simultaneously drives the pushing mechanism 9. When the screen 61 vibrates, the vertical plate 912 and the slide rod 913 fixed on it move up and down accordingly. The push plate 914 on the slide rod 913 is hinged to the second fixed plate 911 via a connecting rod 915. This linkage mechanism converts the up-and-down vibration of the screen 61 into the horizontal reciprocating motion of the push plate 914 along the slide rod 913. The movement of the push plate 914 continuously pushes the rice accumulated at the edge or bottom of the screen 61 back to the main working area of ​​the polishing brush 714, and scrapes away any impurities that may be attached to the surface of the screen 61, preventing clogging.

[0028] This invention provides a rice bran removal device for processing selenium-enriched rice. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A rice bran removal device for processing selenium-enriched rice, comprising a processing box (1), characterized in that: The processing box (1) has a feed inlet (2) at the top and a discharge outlet (3) at the bottom. The bottom of the processing box (1) is fixedly connected to a support leg (4). Fans (5) are provided on the left and right sides of the processing box (1). A screen (61) is provided inside the processing box (1), and holes (62) are opened inside the screen (61). The processing box (1) is equipped with a polishing mechanism (7). The polishing mechanism (7) includes a motor (711). The motor (711) is fixedly connected to the left side of the processing box (1). The output end of the motor (711) is fixedly connected to a rotating shaft (712) through a coupling. The rotating shaft (712) moves through the processing box (1) and extends outward. A gear (715) is fixedly connected to the outer wall of the rotating shaft (712). A connecting sleeve (713) is movably sleeved on the outer wall of the rotating shaft (712). Several polishing brushes (714) are fixedly connected to the outer wall of the connecting sleeve (713).

2. The rice bran removal device for processing selenium-enriched rice according to claim 1, characterized in that: There are two rotating shafts (712), and the two rotating shafts (712) mesh with each other through gears (715).

3. The rice bran removal device for processing selenium-enriched rice according to claim 2, characterized in that: The inner wall of the processing box (1) is provided with a sliding groove (716), and a slider (717) is slidably connected inside the sliding groove (716). A first spring (718) is fixedly connected between the slider (717) and the sliding groove (716). The slider (717) is fixedly connected to the screen (61). An abutment plate (719) is fixedly connected to the outer wall of the connecting sleeve (713). The abutment plate (719) is connected to the screen (61).

4. The rice bran removal device for processing selenium-enriched rice according to claim 3, characterized in that: The processing box (1) is fixedly connected to a first fixing plate (720), and a second spring (721) is fixedly connected to the top of the first fixing plate (720). A striking ball (722) is fixedly connected to the top of the second spring (721), and the striking ball (722) is in contact with the screen (61).

5. The rice bran removal device for processing selenium-enriched rice according to claim 4, characterized in that: The processing box (1) is provided with a transverse displacement mechanism (8), which includes a third spring (811) and is sleeved on the outer wall of the rotating shaft (712).

6. The rice bran removal device for processing selenium-enriched rice according to claim 5, characterized in that: A contact rod (812) is fixedly connected to the left side of the connecting sleeve (713), and a contact block (813) is fixedly connected to the inner wall of the processing box (1). The contact block (813) is in contact with the contact rod (812).

7. The rice bran removal device for processing selenium-enriched rice according to claim 6, characterized in that: The number of the lateral displacement mechanism (8) is two, and the two lateral displacement mechanisms (8) are respectively arranged on the outer wall of the two connecting sleeves (713).

8. The rice bran removal device for processing selenium-enriched rice according to claim 7, characterized in that: The processing box (1) is equipped with a pushing mechanism (9), which includes a second fixing plate (911) fixedly connected to the inner wall of the processing box (1). The top of the screen (61) is fixedly connected to a vertical plate (912).

9. The rice bran removal device for processing selenium-enriched rice according to claim 8, characterized in that: A slide rod (913) is fixedly connected to the front of the vertical plate (912). A push plate (914) is movably sleeved on the outer wall of the slide rod (913). A connecting rod (915) is hinged between the push plate (914) and the second fixed plate (911). The push plate (914) is in contact with the screen (61).

10. A rice bran removal device for processing selenium-enriched rice according to claim 9, characterized in that: The number of the pushing mechanism (9) is two, and the two pushing mechanisms (9) are respectively arranged on the front and rear sides of the processing box (1).

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