Automatic rice polishing device

Abstract

The invention belongs to the field of rice polishing, and particularly relates to an automatic rice polishing device which comprises a polishing box, a polishing roller capable of rotating is arranged in the polishing box, multiple sets of adsorption holes are formed in the surface of the polishing roller, and the multiple sets of adsorption holes are annularly formed in the outer side of the polishing roller at equal intervals. The multiple adsorption holes in each group are linearly arranged at equal intervals, a second negative pressure pump used for transmitting negative pressure to the adsorption holes is arranged at one end of the polishing roller, a friction belt used for polishing rice is arranged above the polishing roller, and an abutting plate capable of moving horizontally is arranged on one side of the polishing roller. And a feeding frame used for feeding rice is installed at the bottom of the polishing box, through the arrangement, comprehensive polishing work on the surface of the rice is achieved, the polishing degrees of all the rice are kept consistent, the phenomenon that the quality is uneven is avoided, meanwhile, the phenomenon that the rice is broken in the whole polishing process is avoided, and the finished product quality of the rice is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of rice polishing, and more specifically, it is an automated rice polishing device. Background Art

[0002] Rice, also known as paddy rice, is a food made from paddy after processes such as cleaning, hulling, milling, and finished product finishing. Rice polishing is an important link in the paddy processing process. Its main purpose is to remove the bran powder on the surface of the rice grains, improving the appearance quality and commercial value of the rice. After polishing, the surface of the rice is smoother, with a beautiful color, and it also helps to improve the storability of the rice and the taste of the cooked rice. The traditional rice polishing device directly puts the rice into the polishing equipment, allowing the rice to rub against the polishing parts and between the rice grains to complete the polishing process. In this polishing process, not only is the polishing degree uncontrollable, which easily causes some rice to be over-polished and some rice to be weakly polished, resulting in uneven quality of the finished product, but also the polishing force is uncontrollable, easily causing the rice to break and be damaged. Summary of the Invention

[0003] To make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: An automated rice polishing device of the present invention includes a polishing box. Inside the polishing box, there is a rotatable polishing roller. The surface of the polishing roller is provided with multiple groups of adsorption holes. The multiple groups of adsorption holes are arranged in an annular equidistant pattern on the outer side of the polishing roller, and the multiple adsorption holes in each group are arranged in a linear equidistant pattern. One end of the polishing roller is provided with a negative pressure pump two for transmitting negative pressure to the adsorption holes. Above the polishing roller, there is a friction belt for polishing the rice. On one side of the polishing roller, there is a translatable pressing plate. At the bottom of the polishing box, there is a feeding frame for putting in the rice. The inner bottom of the feeding frame is fixedly connected with a blocking plate that is movably attached to the outer side of the polishing roller. At the top of the polishing box, there is a negative pressure pump one for recovering the polished bran powder. Through the setting of the polishing roller, the rice to be polished is put into the feeding frame, and the rice will slide into the bottom of the polishing roller under the action of gravity, and multiple adsorption holes will generate negative pressure through the negative pressure pump 2. At the same time, the polishing roller rotates counterclockwise. The diameter of the adsorption hole is much smaller than the diameter of the rice. Therefore, after the rice blocks the adsorption hole, it will no longer continue to adsorb the rice. Finally, the counterclockwise rotating polishing roller will fix the rice grains on its own surface. Since the subsequent rice is sucked from the bottom of the polishing roller and transported upward, and the polishing roller is full of rice toward the side of the feeding frame, the bottom will encounter resistance when transporting the rice upward. In this way, the rice standing upright on the surface of the polishing roller will be turned over and transformed into a lying state, so that the rice on the surface of the polishing roller is in a lying state, and then the friction belt above will grind the outer surface of the rice passing through. The friction belt is made of elastic material, and the friction belt is wrapped around the upper outer side of the polishing roller. The outer surface of the rice passing through will be rubbed. The surface bran powder is removed. The negative pressure adsorbs the rice so that it will not move. Then the polishing roller drives the rice to continue moving. Since each group of adsorption holes is arranged linearly, after moving to the abutment plate position, the abutment plate moves to press a row of rice on the surface of the polishing roller to make the rice separate from the adsorption holes. At the same time, the rice and the polishing roller move relative to each other. The surface of the polishing roller is rough, so the side that is not rubbed by the friction belt can be polished. Then the abutment plate returns to its position. Since there is no suction, the rice falls into the feeding frame at the bottom. The blocking plate divides the two sides of the feeding frame into a finished product area and a feeding area. The negative pressure pump above continuously provides negative pressure to the inside of the polishing box to absorb and transfer the bran powder generated by grinding upward. Through this setting, the comprehensive polishing of the rice surface is achieved, and the polishing degree of all rice is consistent, and there will be no uneven quality. At the same time, the overall polishing process will not cause the rice to break, thereby ensuring the quality of the finished rice.

[0005] Preferably, the friction belt is arranged in a ring shape, and the inner ring of the friction belt is provided with three driven rollers for fixing the position of the friction belt, and an active roller for driving the friction belt to rotate, and the two driven rollers away from the active roller can move in a vertical plane, and the active roller is used to drive the friction belt to rotate clockwise, and the running speed needs to be greater than the speed of the polishing roller so that the rice can be rubbed against the friction belt, and the driven roller is used to maintain the shape of the friction belt so that the bottom of the friction belt can fit the polishing roller, and when the friction belt after friction moves to the top surface, it can be adsorbed by the negative pressure of the negative pressure pump 1 to transfer the bran powder, and by adjusting the two driven rollers away from the active roller, the contact area between the friction belt and the polishing roller can be adjusted, thereby adjusting the strength of the friction rice.

[0006] Preferably, a transfer groove is formed inside the polishing roller. The transfer groove communicates with all the adsorption holes. The negative pressure generating end of the second negative pressure pump is rotationally connected to the polishing roller through the transfer groove. A first servo motor for driving the polishing roller to rotate is arranged at the other end of the polishing roller. Both outer sides of the two ends of the polishing roller are rotationally connected to the polishing box. The second negative pressure pump generates negative pressure from one side and transmits it to the transfer groove, and the transfer groove then transmits the negative pressure to all the adsorption holes to complete the adsorption of rice. The first servo motor drives the polishing roller to perform stable rotational work.

[0007] Preferably, the baffle plate is inclined. A discharge pipe is fixedly connected to the outer side of the polishing box near the bottom. The discharge pipe communicates with the inside of the polishing box. The discharge pipe is located between the baffle plate and the pressing plate. The inclined baffle plate concentrates the peeled rice at the bottom of the polishing box, and the end of the bottom of the polishing box away from the discharge pipe is higher, so that the finished rice can slide out of the discharge pipe under the action of gravity. Since the polishing roller is always in a working state, the equipment causes the polishing box to be in a vibrating state, which can assist in the discharge of rice.

[0008] Preferably, the length of the pressing plate is the same as that of the polishing roller. An elastic pressing pad is fixedly connected to the side of the pressing plate close to the polishing roller. An outwardly convex arc plate is fixedly connected to the top of the pressing plate. After the pressing plate approaches the polishing roller and holds the rice, the pressing pad is used to ensure flexible contact with the rice and reduce the damage caused by pressing. A rough and elastic friction sleeve is also attached to the outer surface of the polishing roller to ensure that the rice will not be excessively worn. The arc plate is used to prevent the rice that should have fallen when the pressing plate is released from bouncing upward. The pressing plate needs to release the rice before the next group of rice arrives.

[0009] Preferably, a second servo motor is fixedly connected to the outer side of the feeding frame. Both outer sides of the driving roller and the driven roller are rotationally connected to the polishing box. A first belt is sleeved between the output end of the second servo motor and the outer side of the driving roller. An electric telescopic rod one and an electric telescopic rod two for driving the driven roller to move are installed on the outer side of the polishing box. The second servo motor drives the first belt and the driving roller to rotate, and the electric telescopic rod one and the electric telescopic rod two adjust the positions of the two driven rollers, thereby changing the contact area between the friction belt and the polishing roller.

[0010] Preferably, moving grooves for passing through the driven rollers are formed on both sides of the polishing box. A rotating shaft is connected to the outside of the driven roller, and the rotating shaft is slidably connected to the moving groove. The output end of the first electric telescopic rod is fixedly connected with a vertically arranged sliding plate. A vertical sliding groove is formed on the surface of the sliding plate. One end of the lower driven roller is inserted into the sliding groove. The moving end of the second electric telescopic rod is rotatably sleeved on the outside of the other driven roller. By providing the first electric telescopic rod, with the elongation and shortening of the first electric telescopic rod, the translation of the sliding plate can be controlled, driving the corresponding driven roller to perform an arc movement in the arc-shaped moving groove, and the arc is adapted to the arc of the polishing roller. The second electric telescopic rod only needs to normally drive the other driven roller to translate to achieve the effect of adjusting the fitting area between the friction belt and the polishing roller.

[0011] Preferably, a plurality of cleaning brushes are arranged at the inner top of the polishing box. The bottom of the cleaning brush is attached to the surface of the friction belt. The negative pressure generating end of the first negative pressure pump is located above the friction belt and partially located between adjacent cleaning brushes. The cleaning brush is used to clean the bran powder on the surface of the friction belt. The bottom of the cleaning brush always contacts the top surface of the friction belt. The bottom of the cleaning brush is relatively long and can be bent appropriately to adapt to the adjustment of the friction belt. At the same time, the suction end of the first negative pressure pump can absorb the bran powder cleaned by the cleaning brush.

[0012] Preferably, a plurality of piston link groups are fixedly connected to the outside of the polishing box. The horizontal moving ends of the plurality of piston link groups are all fixedly connected to the pressing plate. The rotating input ends of the plurality of piston link groups are fixedly connected to each other through a rotatable linkage rod. The piston link group drives the pressing plate to move horizontally. Due to its special movement mode, when the horizontal end moves to the farthest position, it will turn and move back to its original position, so that the time of staying at the farthest end is slightly longer than the moving time. And there is an elastic pressing pad at the end of the pressing plate. Before the horizontal moving end of the piston link group reaches the farthest end, the pressing plate has already pressed the rice. Therefore, the end of the pressing plate can fix the rice for a long time.

[0013] Preferably, a driving disc is fixedly connected to the middle of the output end of the first servo motor. A second belt is sleeved between the driving disc and the linkage rod. A protective shell is sleeved outside the polishing box. The first servo motor and the plurality of piston link groups are all located inside the protective shell. When the first servo motor drives the polishing roller to rotate, it will also synchronously drive the driving disc to rotate, and synchronously drive the linkage rod to rotate through the second belt, thereby starting all the piston link groups. By only controlling the diameters of the driving disc and the linkage rod to make the movement of the pressing plate just adapt to the position where the rice moves, it can be ensured that the rice is accurately fixed at the specified position. This setting not only reduces the number of electrical appliances and the control difficulty, but also only needs to ensure correct adjustment to ensure that the pressing plate can accurately fix the rice every time.

[0014] The beneficial effects of the present invention are as follows: 1. An automatic rice polishing device according to the present invention realizes comprehensive polishing of the rice surface through the setting of polishing rollers, and the polishing degree of all rice is kept consistent, without the phenomenon of uneven quality. At the same time, the whole polishing process will not cause the rice to break, ensuring the finished product quality of the rice.

[0015] 2. In the automatic rice polishing device described in the present invention, the driving roller is used to drive the friction belt to rotate clockwise, and the running speed needs to be greater than the speed of the polishing roller, so that the rice can be frictionally processed with the friction belt. The driven roller is used to maintain the shape of the friction belt, so that the bottom of the friction belt can fit the polishing roller. When the friction belt moves to the top surface after friction, it can be strongly adsorbed by the negative pressure of the first negative pressure pump to transfer the bran powder. By adjusting the two driven rollers far away from the driving roller, the contact area between the friction belt and the polishing roller can be adjusted, thereby adjusting the intensity of friction on the rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is the first perspective three-dimensional view of the present invention; Figure 2 is the second perspective three-dimensional view of the present invention; Figure 3 is the three-dimensional view of the polishing box and the first servo motor of the present invention; Figure 4 is the cross-sectional view of the present invention; Figure 5 is the three-dimensional view of the polishing box and the feeding frame of the present invention; Figure 6 is the three-dimensional view of the driving disc of the present invention; Figure 7 is the partial three-dimensional view of the polishing box of the present invention; In the figure: 1. Polishing box; 2. Protective shell; 3. First negative pressure pump; 4. Feeding frame; 5. Polishing roller; 6. Second negative pressure pump; 7. Discharge pipe; 8. First servo motor; 9. Second servo motor; 10. First belt; 12. Driving disc; 13. Piston connecting rod group; 14. Linking rod; 15. Cleaning brush; 16. Driving roller; 17. Friction belt; 18. Driven roller; 19. Bracing plate; 20. Baffle plate; 21. Transfer groove; 22. First electric telescopic rod; 23. Second belt; 24. Sliding disc; 25. Second electric telescopic rod. DETAILED DESCRIPTION OF THE INVENTION

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] Such as Figures 1 to 7As shown in the figure, an automated rice polishing device according to an embodiment of the present invention includes a polishing box 1. Inside the polishing box 1, there is a rotatable polishing roller 5. The surface of the polishing roller 5 is provided with multiple groups of adsorption holes. The multiple groups of adsorption holes are arranged in an annular equidistant manner on the outer side of the polishing roller 5. Multiple adsorption holes in each group are arranged in a linear equidistant manner. One end of the polishing roller 5 is provided with a negative pressure pump two 6 for transmitting negative pressure to the adsorption holes. Above the polishing roller 5, there is a friction belt 17 for polishing rice. On one side of the polishing roller 5, there is a translatable pressing plate 19. The bottom of the polishing box 1 is installed with a feeding frame 4 for feeding rice. The inner bottom of the feeding frame 4 is fixedly connected with a blocking plate 20 that is movably attached to the outer side of the polishing roller 5. The top of the polishing box 1 is provided with a negative pressure pump one 3 for recovering polished bran powder; During operation, in traditional rice polishing settings, rice is directly placed into the polishing equipment, and the rice rubs against the polishing parts and between the rice grains to complete the polishing process. In this polishing process, not only is the polishing degree uncontrollable, which easily causes some rice to be over-polished and some rice to be weakly polished, resulting in uneven quality of the finished products, but also the polishing force is uncontrollable, which easily causes the rice to break and be damaged; For some relatively precious rice, such as tribute rice in many places, the output is small and the demand is large. If traditional polishing equipment is used for polishing, it will cause large losses and is not conducive to subsequent sales; By setting the polishing roller 5, the rice to be polished is put into the feeding frame 4, and the rice will slide into the bottom of the polishing roller 5 under the action of gravity, and the multiple adsorption holes will generate negative pressure through the negative pressure pump 26. At the same time, the polishing roller 5 rotates counterclockwise. The diameter of the adsorption hole is much smaller than the diameter of the rice. Therefore, after the rice blocks the adsorption hole, it will no longer continue to adsorb the rice. Finally, the counterclockwise rotating polishing roller 5 will fix the rice grains on its surface. Since the subsequent rice is sucked from the bottom of the polishing roller 5 and transported upward, and the polishing roller 5 is full of rice toward the side of the feeding frame 4, the bottom will encounter resistance when transporting the rice upward. In this way, the rice standing upright on the surface of the polishing roller 5 will be turned over and transformed into a lying state, so that the rice on the surface of the polishing roller 5 is in a lying state, and then the upper friction belt 17 will grind the outer surface of the rice passing through. The friction belt 17 is made of elastic material, and the friction belt 17 is wrapped around the upper outer side of the polishing roller 5. The outer surface of the rice passing through will be rubbed. The rice is then moved to the position of the plate 19, and the plate 19 moves to press a row of rice on the surface of the polishing roller 5, so that the rice is separated from the adsorption holes. At the same time, the rice and the polishing roller 5 move relative to each other. The surface of the polishing roller 5 is rough, and the side that is not rubbed by the friction belt 17 can be polished. Then the plate 19 returns to its position. Since there is no suction, the rice falls into the feeding frame 4 at the bottom. The blocking plate 20 divides the two sides of the feeding frame 4 into a finished product area and a feeding area. The negative pressure pump 3 above continuously provides negative pressure to the inside of the polishing box 1 to absorb and transfer the bran powder generated by grinding upward. Through this arrangement, the comprehensive polishing of the rice surface is achieved, and the polishing degree of all rice is consistent, and there will be no uneven quality. At the same time, the overall polishing process will not cause the rice to break, thereby ensuring the quality of the finished rice. The length of rice is generally less than one centimeter, and the spacing between the adsorption holes in each group can be two centimeters. When a polishing roller 5 with a length of five meters and a diameter of two meters is set, the number of rice adsorbed in one group of adsorption holes is 250 grains, the circumference of the polishing roller 5 is about six meters, and the spacing between each group of adsorption holes is six centimeters, which is about one hundred groups. The polishing roller 5 can process 25,000 grains in one rotation, which is about one kilogram of rice. By controlling the rotation speed of the polishing roller 5 to one circle in six seconds, ten kilograms of rice can be stably processed in one minute. The processing speed is not lower than that of traditional equipment, and the size of the equipment also determines the processing speed.

[0020] The friction belt 17 is arranged in an annular shape, and the inner ring of the friction belt 17 is provided with three driven rollers 18 for fixing the position of the friction belt 17, and an active roller 16 for driving the friction belt 17 to rotate, and the two driven rollers 18 away from the active roller 16 can move on a vertical plane; During operation, the driving roller 16 is used to drive the friction belt 17 to rotate clockwise, and the running speed needs to be greater than that of the polishing roller 5, so that the rice can be friction-treated with the friction belt 17. The driven roller 18 is used to maintain the shape of the friction belt 17, so that the bottom of the friction belt 17 can fit the polishing roller 5. When the friction belt 17 after friction moves to the top surface, it can be strongly adsorbed by the negative pressure of the first negative pressure pump 3 to transfer the bran powder. By adjusting the two driven rollers 18 far away from the driving roller 16, the contact area between the friction belt 17 and the polishing roller 5 can be adjusted, thereby adjusting the intensity of friction on the rice.

[0021] A transfer groove 21 is formed inside the polishing roller 5, and the transfer groove 21 communicates with all the adsorption holes. The negative pressure generating end of the second negative pressure pump 6 is rotationally connected to the polishing roller 5 through the transfer groove 21. A first servo motor 8 for driving the polishing roller 5 to rotate is arranged at the other end of the polishing roller 5. Both outer sides of the two ends of the polishing roller 5 are rotationally connected to the polishing box 1. During operation, the second negative pressure pump 6 generates negative pressure from one side and transmits it to the transfer groove 21, and the transfer groove 21 then transmits the negative pressure to all the adsorption holes to complete the adsorption of the rice. The first servo motor 8 drives the polishing roller 5 to perform stable rotational work.

[0022] The baffle 20 is inclined. A discharge pipe 7 is fixedly connected to the outer side of the polishing box 1 near the bottom. The discharge pipe 7 communicates with the inside of the polishing box 1. The discharge pipe 7 is located between the baffle 20 and the abutting plate 19. During operation, the inclined baffle 20 concentrates the peeled rice at the bottom of the polishing box 1, and the end of the bottom of the polishing box 1 away from the discharge pipe 7 is higher, so that the finished rice can slide out of the discharge pipe 7 under the action of gravity. Since the polishing roller 5 is always in operation, the equipment causes the polishing box 1 to vibrate, which can assist in the discharge of the rice.

[0023] The length of the abutting plate 19 is the same as that of the polishing roller 5. An elastic pressing pad is fixedly connected to the side of the abutting plate 19 close to the polishing roller 5. An outwardly convex arc plate is fixedly connected to the top of the abutting plate 19. During operation, when the abutting plate 19 approaches the polishing roller 5 and holds up the rice, the pressing pad is used to ensure flexible contact with the rice and reduce the damage caused by compression. A rough and elastic friction sleeve is also attached to the outer surface of the polishing roller 5 to ensure that the rice will not be overly worn. The arc plate is used to prevent the rice that should have fallen when the abutting plate 19 is released from bouncing upward. The abutting plate 19 needs to release the rice before the next group of rice arrives.

[0024] A servo motor two 9 is fixedly connected to the outer side of the feeding frame 4. The outer sides of both ends of the driving roller 16 and the driven roller 18 are rotatably connected to the polishing box 1. A first belt 10 is sleeved between the outer side of the driving roller 16 and the output end of the servo motor two 9. An electric telescopic rod one 22 and an electric telescopic rod two 25 for driving the driven roller 18 to move are installed on the outer side of the polishing box 1; During operation, the servo motor two 9 drives the first belt 10 and the driving roller 16 to rotate. The electric telescopic rod one 22 and the electric telescopic rod two 25 adjust the positions of the two driven rollers 18, thereby changing the fitting area between the friction belt 17 and the polishing roller 5.

[0025] Moving grooves for passing through the driven rollers 18 are formed on both sides of the polishing box 1. A rotating shaft is connected to the outer side of the driven roller 18, and the rotating shaft is slidably connected to the moving groove. The output end of the electric telescopic rod one 22 is fixedly connected to a vertically arranged sliding disk 24. A vertical sliding groove is formed on the surface of the sliding disk 24. One end of the lower driven roller 18 is inserted into the sliding groove. The moving end of the electric telescopic rod two 25 is rotatably sleeved on the outer side of the other driven roller 18; During operation, due to the setting of the electric telescopic rod one 22, as the electric telescopic rod one 22 extends and retracts, the translation of the sliding disk 24 can be controlled, driving the corresponding driven roller 18 to perform an arc-shaped movement in the arc-shaped moving groove, and the arc is adapted to the arc of the polishing roller 5. The electric telescopic rod two 25 only needs to normally drive the other driven roller 18 to translate, and the effect of adjusting the fitting area between the friction belt 17 and the polishing roller 5 can be achieved.

[0026] A plurality of cleaning brushes 15 are arranged on the inner top of the polishing box 1. The bottom of the cleaning brush 15 is attached to the surface of the friction belt 17. The negative pressure generating end of the negative pressure pump one 3 is located above the friction belt 17 and partially located between adjacent cleaning brushes 15; During operation, the cleaning brush 15 is used to clean the bran powder on the surface of the friction belt 17. The bottom of the cleaning brush 15 always contacts the top surface of the friction belt 17. The bottom of the cleaning brush 15 is relatively long and can be bent appropriately to adapt to the adjustment of the friction belt 17. At the same time, the suction end of the negative pressure pump one 3 can suck the bran powder cleaned by the cleaning brush 15.

[0027] A plurality of piston link groups 13 are fixedly connected to the outer side of the polishing box 1. The horizontal moving ends of the plurality of piston link groups 13 are all fixedly connected to the pressing plate 19. The rotating input ends of the plurality of piston link groups 13 are fixedly connected to each other through a rotatable linkage rod 14; During operation, the piston connecting rod group 13 drives the abutting plate 19 to move horizontally. Due to its special motion mode, when the piston connecting rod group 13 moves horizontally to the farthest position, it will turn and move back to its original position, resulting in a slightly longer stay time at the farthest end than the moving time. Moreover, the end of the abutting plate 19 is provided with an elastic pressing pad. When the horizontal moving end of the piston connecting rod group 13 has not reached the farthest end, the abutting plate 19 has already pressed the rice. Therefore, the end of the abutting plate 19 can fix the rice for a relatively long time.

[0028] The middle part of the output end of the first servo motor 8 is fixedly connected with a driving disc 12. A second belt 23 is sleeved between the driving disc 12 and the linkage rod 14. A protective shell 2 is sleeved outside the polishing box 1. The first servo motor 8 and multiple piston connecting rod groups 13 are all located inside the protective shell 2; During operation, when the first servo motor 8 drives the polishing roller 5 to rotate, it will also synchronously drive the driving disc 12 to rotate, and synchronously drive the linkage rod 14 to rotate through the second belt 23, thereby starting all the piston connecting rod groups 13. By only controlling the diameters of the driving disc 12 and the linkage rod 14 to make the movement of the abutting plate 19 just match the position where the rice moves, it can ensure that the rice is accurately fixed at the specified position. This setting not only reduces the number of electrical appliances but also reduces the control difficulty. At the same time, as long as the adjustment is correct, it can ensure that the abutting plate 19 can accurately fix the rice every time.

[0029] During operation, the rice to be polished is put into the feeding frame 4 through the setting of the polishing roller 5. The rice will slide into the bottom of the polishing roller 5 under the action of gravity, and negative pressure will be generated in multiple adsorption holes through the negative pressure pump 26. At the same time, the polishing roller 5 rotates counterclockwise. The diameter of the adsorption hole is much smaller than the diameter of the rice. Therefore, after the rice blocks the adsorption hole, it will no longer continue to adsorb the rice. Finally, the counterclockwise rotating polishing roller 5 will fix the rice grains on its surface. Since the subsequent rice is sucked from the bottom of the polishing roller 5 and transported upward, and the polishing roller 5 is full of rice toward the side of the feeding frame 4, the bottom will encounter resistance when transporting the rice upward. In this way, the rice standing upright on the surface of the polishing roller 5 will be turned over and transformed into a lying state, so that the rice on the surface of the polishing roller 5 is in a lying state. After that, the friction belt 17 above will grind the outer surface of the rice passing through. The friction belt 17 is made of elastic material. The friction belt 17 is wrapped around the upper outer side of the polishing roller 5. The outer surface of the rice passing through will be rubbed. The rice is then rubbed to remove the bran powder on the surface. Since the negative pressure absorbs the rice so that it does not move, the polishing roller 5 drives the rice to continue to move. Since each group of adsorption holes is arranged linearly, after moving to the position of the abutment plate 19, the abutment plate 19 moves to press a row of rice on the surface of the polishing roller 5 to allow the rice to escape from the adsorption holes. At the same time, the rice and the polishing roller 5 move relative to each other. The surface of the polishing roller 5 is rough, so the side that is not rubbed by the friction belt 17 can be polished. Then the abutment plate 19 returns to its position. Since there is no suction, the rice falls into the feeding frame 4 at the bottom. The blocking plate 20 divides the two sides of the feeding frame 4 into a finished product area and a feeding area. The negative pressure pump 3 above continuously provides negative pressure to the inside of the polishing box 1 to absorb and transfer the bran powder generated by grinding upwards. Through this arrangement, comprehensive polishing of the rice surface is achieved, and the polishing degree of all rice is kept consistent, and there will be no uneven quality. At the same time, the overall polishing process will not cause the rice to break, thereby ensuring the quality of the finished rice. The active roller 16 is used to drive the friction belt 17 to rotate clockwise, and the running speed needs to be greater than the speed of the polishing roller 5, so that the rice can be rubbed with the friction belt 17. The driven roller 18 is used to maintain the shape of the friction belt 17, so that the bottom of the friction belt 17 can fit the polishing roller 5. When the friction belt 17 moves to the top surface after friction, it can be adsorbed by the negative pressure of the negative pressure pump 3 to transfer the bran powder. By adjusting the two driven rollers 18 away from the active roller 16, the contact area between the friction belt 17 and the polishing roller 5 can be adjusted, thereby adjusting the intensity of the friction of the rice; The negative pressure pump 26 generates negative pressure from one side and transmits it to the transfer groove 21, and the transfer groove 21 transmits the negative pressure to all the adsorption holes to complete the adsorption of rice, and the servo motor 1 8 drives the polishing roller 5 to rotate stably; The inclined baffle plate 20 concentrates the peeled rice at the bottom of the polishing box 1, and the end of the bottom of the polishing box 1 away from the discharge pipe 7 is higher, allowing the finished rice to slide out from the discharge pipe 7 under the action of gravity. Since the polishing roller 5 is always in operation, the equipment causes the polishing box 1 to be in a vibrating state, which can assist in the discharge of rice; When the abutting plate 19 approaches the polishing roller 5 and pushes the rice, the pressing pad is used to ensure flexible contact with the rice and reduce the damage caused by pressing. A rough and elastic friction sleeve is also attached to the outer surface of the polishing roller 5 to ensure that the rice will not be excessively worn. The arc-shaped plate is used to prevent the rice that should have fallen when the abutting plate 19 is released from bouncing upward. The abutting plate 19 needs to release the rice before the next group of rice arrives; The servo motor II 9 drives the belt I 10 and the driving roller 16 to rotate, and the electric telescopic rod I 22 and the electric telescopic rod II 25 adjust the positions of the two driven rollers 18, thereby changing the contact area between the friction belt 17 and the polishing roller 5; Through the setting of the electric telescopic rod I 22, as the electric telescopic rod I 22 extends and retracts, the translation of the sliding disk 24 can be controlled, driving the corresponding driven roller 18 to perform an arc-shaped movement in the arc-shaped movement groove. The arc is adapted to the arc of the polishing roller 5, and the electric telescopic rod II 25 only needs to normally drive the other driven roller 18 to translate to achieve the effect of adjusting the contact area between the friction belt 17 and the polishing roller 5; The cleaning brush 15 is used to clean the bran powder on the surface of the friction belt 17. The bottom of the cleaning brush 15 always contacts the top surface of the friction belt 17. The bottom of the cleaning brush 15 is relatively long and can be bent appropriately to adapt to the adjustment of the friction belt 17. At the same time, the suction end of the negative pressure pump I 3 can suck the bran powder cleaned by the cleaning brush 15; The piston connecting rod group 13 drives the abutting plate 19 to move horizontally. Due to its special movement mode, when the horizontal end moves to the farthest position, it will turn and move back to the original position, so that the time it stays at the farthest end is slightly longer than the moving time. And there is an elastic pressing pad at the end of the abutting plate 19. Before the horizontal moving end of the piston connecting rod group 13 reaches the farthest end, the abutting plate 19 has already pressed the rice, so the end of the abutting plate 19 can fix the rice for a long time; When the servo motor I 8 drives the polishing roller 5 to rotate, it will also synchronously drive the driving disk 12 to rotate, and drive the linkage rod 14 to rotate through the belt II 23, thereby starting all the piston connecting rod groups 13. Just control the diameters of the driving disk 12 and the linkage rod 14 to make the movement of the abutting plate 19 just match the position where the rice moves, and it can ensure that the rice is accurately fixed at the specified position. This setting not only reduces the number of electrical appliances and the control difficulty, but also only needs to ensure correct adjustment to ensure that the abutting plate 19 can accurately fix the rice every time.

[0030] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated rice polishing device, characterized in that: It includes a polishing box (1). Inside the polishing box (1), there is a rotatable polishing roller (5). Multiple adsorption holes are formed on the surface of the polishing roller (5). The multiple groups of adsorption holes are arranged in an annular and equidistant manner on the outer side of the polishing roller (5), and multiple adsorption holes in each group are arranged in a linear and equidistant manner. One end of the polishing roller (5) is provided with a vacuum pump two (6) for transmitting negative pressure to the adsorption holes. Above the polishing roller (5), there is a friction belt (17) for polishing rice. On one side of the polishing roller (5), there is a translatable pressing plate (19). At the bottom of the polishing box (1), there is a feeding frame (4) for feeding rice. At the inner bottom of the feeding frame (4), there is a blocking plate (20) that is movably attached to the outer side of the polishing roller (5). At the top of the polishing box (1), there is a vacuum pump one (3) for recovering polished bran powder.

2. An automatic rice polishing device according to claim 1, characterized in that: The friction belt (17) is arranged in a ring shape. Inside the inner ring of the friction belt (17), there are three driven rollers (18) for fixing the position of the friction belt (17), and a driving roller (16) for driving the friction belt (17) to rotate. The two driven rollers (18) away from the driving roller (16) can move in the vertical plane.

3. An automated rice polishing device according to claim 2, characterized in that: A transmission groove (21) is formed inside the polishing roller (5). The transmission groove (21) communicates with all the adsorption holes. The negative pressure generating end of the vacuum pump two (6) is rotationally connected to the polishing roller (5) through the transmission groove (21). At the other end of the polishing roller (5), there is a servo motor one (8) for driving the polishing roller (5) to rotate. The outer sides of both ends of the polishing roller (5) are rotationally connected to the polishing box (1).

4. An automated rice polishing device according to claim 3, characterized in that: The blocking plate (20) is inclined. A discharge pipe (7) is fixedly connected to the outer side of the polishing box (1) near the bottom. The discharge pipe (7) communicates with the inside of the polishing box (1). The discharge pipe (7) is located between the blocking plate (20) and the pressing plate (19).

5. An automatic rice polishing device according to claim 4, characterized in that: The length of the pressing plate (19) is the same as that of the polishing roller (5). An elastic pressing pad is fixedly connected to the side of the pressing plate (19) close to the polishing roller (5). An outwardly convex arc-shaped plate is fixedly connected to the top of the pressing plate (19).

6. The automated rice polishing device according to claim 5, characterized in that: A servo motor two (9) is fixedly connected to the outer side of the feeding frame (4). The outer sides of both ends of the driving roller (16) and the driven rollers (18) are rotationally connected to the polishing box (1). A belt one (10) is sleeved between the outer side of the driving roller (16) and the output end of the servo motor two (9). An electric telescopic rod one (22) and an electric telescopic rod two (25) for driving the driven roller (18) to move are installed on the outer side of the polishing box (1).

7. An automatic rice polishing device according to claim 6, characterized in that: Both sides of the polishing box (1) are provided with moving grooves for passing through the driven rollers (18). A rotating shaft is connected to the outside of the driven rollers (18), and the rotating shaft is slidably connected to the moving grooves. The output end of the first electric telescopic rod (22) is fixedly connected with a vertically arranged sliding disk (24). A vertical sliding groove is provided on the surface of the sliding disk (24). One end of the lower driven roller (18) is inserted into the sliding groove. The moving end of the second electric telescopic rod (25) is rotatably sleeved on the outside of the other driven roller (18).

8. An automated rice polishing device according to claim 7, characterized in that: A plurality of cleaning brushes (15) are arranged at the inner top of the polishing box (1). The bottom of the cleaning brushes (15) is attached to the surface of the friction belt (17). The negative pressure generating end of the first negative pressure pump (3) is located above the friction belt (17) and partially located between adjacent cleaning brushes (15).

9. An automated rice polishing device according to claim 8, characterized in that: A plurality of piston link groups (13) are fixedly connected to the outside of the polishing box (1). The horizontal moving ends of the plurality of piston link groups (13) are all fixedly connected with a pressing plate (19). The rotating input ends of the plurality of piston link groups (13) are fixedly connected to each other through a rotatable linkage rod (14).

10. An automated rice polishing device according to claim 9, characterized in that: The middle part of the output end of the first servo motor (8) is fixedly connected with a driving disk (12). A second belt (23) is sleeved between the driving disk (12) and the linkage rod (14). A protective shell (2) is sleeved on the outside of the polishing box (1). The first servo motor (8) and the plurality of piston link groups (13) are both located inside the protective shell (2).

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