Rice processing and polishing machine for reducing broken rice

Abstract

The present invention discloses a rice processing and polishing machine for reducing broken rice, which relates to the technical field of rice processing machinery, including a polishing cylinder, a first separating sleeve and a second separating sleeve are fixedly arranged at the bottom of the inner cavity of the polishing cylinder, the first separating sleeve and the second separating sleeve are distributed in concentric circles, a driving and lifting mechanism is commonly arranged on the top, inside and bottom of the polishing cylinder, a feeding mechanism, a mixing and polishing mechanism, a lifting and screening mechanism and a trigger-type closing mechanism are arranged on the outside of the driving and lifting mechanism in sequence from top to bottom, and the feeding mechanism, the mixing and polishing mechanism, the lifting and screening mechanism and the trigger-type closing mechanism are all located inside the polishing cylinder. The present invention can not only make the rice raw material and the polishing pills more effectively and evenly mixed, thereby ensuring the polishing effect and improving the polishing efficiency, but also can better screen the polishing pills, the whole rice and the broken rice, thereby ensuring the quality of the final finished rice.

Description

Technical Field

[0001] The invention relates to the technical field of rice processing machinery, in particular to a rice processing polishing machine for reducing broken rice. Background Art

[0002] After brown rice is milled into rice, there will still be a small amount of bran powder on the surface of the rice grains. This will not only affect the appearance quality and storage quality of the rice, but also affect the taste of the rice after it is made into cooked rice. Therefore, the rice needs to be polished after milling.

[0003] The invention patent with authorization announcement number CN 104258919 B discloses a polishing pill circulation type rice polishing machine, comprising: a polishing cylinder, a stirring and pushing blade, a polishing pill lifting path, an inlet for rice to be polished, and polishing pills. The interior of the polishing cylinder contains stirring and pushing blades, and the polishing cylinder is filled with polishing pills. The top of the polishing cylinder is the inlet for rice to be polished, and the bottom of the polishing cylinder is the discharge path. The upper part of the polishing cylinder contains an opening, and the opening is connected to the discharge port of the polishing pill lifting path. The invention can better achieve uniform polishing of rice, reduce the broken rice rate, and facilitate the replacement of polishing devices.

[0004] However, after actual application by technicians in this field, it was found that the polishing pill circulating rice polishing machine used for rice polishing still has some shortcomings. The most obvious one is that before the rice raw material is added, the polishing pills are usually accumulated at the bottom of the inner cavity of the polishing cylinder, which results in a long time to evenly mix the polishing pills with the rice raw material, which has a great impact on the polishing efficiency.

[0005] In addition, during the subsequent screening, since the discharge amount cannot be controlled, it is very easy to stack the discharge, which will cause some broken rice to be unable to be screened out due to the obstruction of whole rice or polishing balls, and will also affect the quality of the final finished rice.

[0006] Therefore, it is necessary to invent a rice processing polishing machine that reduces broken rice to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide a rice processing and polishing machine for reducing broken rice, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rice processing and polishing machine to reduce broken rice, comprising a polishing cylinder, a first separating sleeve and a second separating sleeve are fixedly arranged at the bottom of the inner cavity of the polishing cylinder, the first separating sleeve and the second separating sleeve are distributed in concentric circles, a driving and lifting mechanism is commonly arranged at the top, inside and bottom of the polishing cylinder, a feeding mechanism, a mixing and polishing mechanism, a lifting and screening mechanism and a trigger-type closing mechanism are arranged on the outside of the driving and lifting mechanism in sequence from top to bottom, and the feeding mechanism, the mixing and polishing mechanism, the lifting and screening mechanism and the trigger-type closing mechanism are all located inside the polishing cylinder.

[0009] Preferably, the driving and lifting mechanism comprises a driving motor, a hollow screw, a polishing pill output hole, a polishing pill input hole, a lifting auger, a driven gear, a driving gear and a threaded sleeve;

[0010] The driving motor is fixedly arranged on the top of the polishing cylinder, the two ends of the hollow screw respectively penetrate the top and the bottom of the polishing cylinder, and are rotatably connected to the polishing cylinder through bearings. The hollow screw is transmission-connected to the driving motor, the polishing pill output hole and the polishing pill input hole are arranged on the front top and the front bottom of the hollow screw, the lifting auger is rotatably nested in the hollow screw through bearings, the driven gear is fixedly sleeved at the outer bottom of the lifting auger, two driving gears and two threaded sleeves are each provided, the two driving gears are respectively rotatably nested on both sides of the bottom of the polishing cylinder through bearings, the two threaded sleeves are respectively fixedly sleeved on the outside of the two driving gears, and the two driving gears are meshed with the driven gears.

[0011] Preferably, the material discharge mechanism comprises a first material guide hopper, a material discharge pipe, a guide rod, a blocking block and an annular flexible baffle;

[0012] The first material guide hopper is fixedly arranged at the top of the inner cavity of the polishing cylinder, the discharge pipe is fixedly arranged at the bottom opening of the first material guide hopper, two guide rods are provided, the two guide rods are respectively fixedly arranged on both sides of the top of the discharge pipe, and are fixedly connected to the inner wall of the polishing cylinder, the blocking block is slidably sleeved on the outside of the two guide rods, the blocking block is sleeved on the outside of the hollow screw and is threadedly connected to the hollow screw, the annular flexible baffle is fixedly arranged at the bottom of the first material guide hopper, and is sleeved on the outside of the discharge pipe.

[0013] Preferably, the mixing and polishing mechanism comprises a second material guide hopper, a first material throwing plate, a connecting base, a second material throwing plate and a mixing rod;

[0014] The second material guide hopper is fixedly arranged in the middle of the inner cavity of the polishing cylinder, the first material throwing plate is rotatably arranged on the inner side of the bottom opening of the second material guide hopper, a slider is fixedly arranged on the inner side of the first material throwing plate, a slide groove is opened on the surface of the hollow screw, the slider is slidably arranged on the inner side of the slide groove along the vertical direction, the connecting base is rotatably sleeved on the outer bottom of the first material throwing plate through a bearing, the second material throwing plate is fixedly sleeved on the outer side of the hollow screw and is located below the polishing shot output hole, a plurality of mixing rods are arranged, and the plurality of mixing rods are evenly fixed on both sides of the hollow screw, and the plurality of mixing rods are all located above the second material guide hopper.

[0015] Preferably, the lifting screening mechanism comprises a lifting plate, a first spring, a side screw and an annular material guiding platform;

[0016] The lifting plate is sleeved on the outside of the hollow screw and is threadedly connected to the hollow screw. The first spring is sleeved on the outside of the hollow screw, and one end of the first spring is fixedly connected to the lifting plate and the other end is fixedly connected to the connecting base. Two side screws are provided, and the two side screws are respectively fixedly connected to the two sides of the bottom of the lifting plate. The annular material guide platform is slidably sleeved on the outside of the two side screws and fixedly provided at the bottom of the inner cavity of the polishing cylinder. The outer wall of the annular material guide platform is in contact with the inner wall of the second separating sleeve, and a plurality of polishing balls are provided on the inner side of the annular material guide platform.

[0017] Preferably, the trigger-type sealing mechanism comprises a fixed collar, a telescopic rod, a blocking sleeve, a lifting collar, a second spring and a third spring;

[0018] The fixing collar is fixedly sleeved on the outside of the hollow screw, two telescopic rods are provided, and the two telescopic rods are respectively slidably penetrated on both sides of the top of the fixing collar, the blocking sleeve is slidably sleeved on the outside of the hollow screw and fixedly connected to the bottom ends of the two telescopic rods, the lifting collar is slidably sleeved on the outside of the hollow screw and fixedly connected to the top ends of the two telescopic rods, two second springs and two third springs are each provided, and two second springs are respectively sleeved on the outsides of the two telescopic rods, the second spring is located between the fixing collar and the blocking sleeve, and two third springs are respectively sleeved on the outsides of the two telescopic rods, and the third spring is located between the fixing collar and the lifting collar.

[0019] The present invention also provides a polishing method for a rice processing polishing machine to reduce broken rice, which specifically comprises the following steps:

[0020] S1, adding rice raw materials into the polishing cylinder through the feed hopper at the top of the polishing cylinder, and the rice raw materials are blocked by the first guide hopper and then all accumulated on the top of the first guide hopper;

[0021] S2, start the driving motor. After the driving motor is started, it drives the hollow screw to rotate. When the hollow screw rotates, it drives the blocking block to gradually rise. At the same time, the hollow screw also drives the lifting plate to descend. During the descent of the lifting plate, due to the slide groove on the surface of the hollow screw and the slider inside the first throwing plate, the hollow screw drives the first throwing plate to rotate continuously. In addition, when the lifting plate descends, it drives the two side screws to descend synchronously. When the side screw descends, it drives the driving gear to rotate. When the driving gear rotates, it drives the lifting auger to rotate through the threaded sleeve and the driven gear. At this time, the polishing pills located on the inner side of the annular guide table enter the hollow screw through the polishing pill input hole, and move upward under the action of the lifting auger, and continuously move to the top of the second throwing plate through the polishing pill output hole;

[0022] S3, after the blocking block rises, the rice raw material on the top of the first material guide hopper continuously falls on the top of the second throwing plate, and is pre-mixed with the polishing pills on the top of the second throwing plate, and then is thrown outward under the action of the second throwing plate, and the thrown rice raw material and the polishing pills are blocked by the annular flexible baffle, and then fall on the top of the second material guide hopper, at this time, the multiple mixing rods continue to rotate driven by the hollow screw, and then the rice raw material mixed with the polishing pills is stirred, so that the rice raw material is effectively polished;

[0023] S4, when the lifting plate descends to a first threshold, polishing is completed, and the compressed first spring is fully restored. Subsequently, as the lifting plate continues to descend, the lifting plate drives the first throwing plate to descend through the first spring and the connecting base, and at the same time presses down the lifting ring, so that the lifting ring drives the blocking sleeve to descend. When the lifting plate descends to a second threshold, the blocking sleeve completes the sealing of the polishing pill input hole. At this time, the polishing pill can no longer enter the hollow screw through the polishing pill input hole. In addition, the slider on the inner side of the connecting base also slides to the lowest end of the slide slot, and the connecting base no longer continues to descend.

[0024] S5, after the first throwing plate descends, the blockage of the bottom opening of the second material guide hopper is released, and the polishing balls and the polished rice fall on the top of the first throwing plate through the bottom opening of the second material guide hopper, and are then thrown by the first throwing plate in a rotating state. At this time, since the mass of the polishing balls is greater than the mass of the intact rice, and the mass of the intact rice is greater than the mass of the broken rice, the thrown polishing balls fall into the inner side of the second separating sleeve, the intact rice falls between the second separating sleeve and the first separating sleeve, and the broken rice falls to the outside of the first separating sleeve;

[0025] S6. When the lifting plate descends to a third threshold, the screening of the polishing balls, whole rice and broken rice is completed. At this time, the driving motor drives the hollow screw to rotate in the opposite direction, thereby resetting the unloading mechanism, the lifting screening mechanism and the trigger-type closing mechanism. In addition, when the lifting plate descends to a third threshold, the lifting plate continuously presses down the lifting collar, thereby compressing the third spring and gradually shortening the telescopic rod.

[0026] Technical effects and advantages of the present invention:

[0027] The present invention is provided with a driving and lifting mechanism, a feeding mechanism, a mixing and polishing mechanism, a lifting and screening mechanism and a trigger-type closing mechanism, so that the driving and lifting mechanism can be used to drive the feeding mechanism and the lifting and screening mechanism, so that the feeding mechanism adds the rice raw material to the mixing and polishing mechanism, and the driving and lifting mechanism lifts the polishing pills, so as to achieve pre-mixing of the rice raw material and the polishing pills, and then the mixing and polishing mechanism is driven by the driving and lifting mechanism to achieve polishing of the rice raw material. In addition, as the lifting and screening mechanism is continuously driven, it can release the sealing of the mixing and polishing mechanism and screen the polished rice, and at the same time, it can also trigger the trigger-type closing mechanism, so that the trigger-type closing mechanism blocks the polishing pills, and avoids the polishing pills being continuously transported upward during the screening process. Compared with the same type of device in the prior art, the present invention can not only make the rice raw material and the polishing pills more effectively and evenly mixed, so as to ensure the polishing effect and improve the polishing efficiency, but also can better screen the polishing pills, whole rice and broken rice, so as to ensure the quality of the final finished rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the internal structure of the polishing tube of the present invention.

[0029] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0030] Figure 3 It is a front sectional structural schematic diagram of the blanking mechanism of the present invention.

[0031] Figure 4 It is a front sectional structural schematic diagram of the mixing and polishing mechanism and the lifting and lowering screening mechanism of the present invention.

[0032] Figure 5 It is a front cross-sectional structural schematic diagram of the trigger-type sealing mechanism of the present invention.

[0033] In the figure: 1, polishing cylinder; 2, first separation sleeve; 3, second separation sleeve; 4, driving lifting mechanism; 41, driving motor; 42, hollow screw; 43, polishing pill output hole; 44, polishing pill input hole; 45, lifting auger; 46, driven gear; 47, driving gear; 48, threaded sleeve; 5, feeding mechanism; 51, first guide hopper; 52, feeding pipe; 53, guide rod; 54, blocking block; 55, annular flexible baffle ; 6. Mixing and polishing mechanism; 61. Second material guide hopper; 62. First material throwing plate; 63. Connecting base; 64. Second material throwing plate; 65. Mixing rod; 7. Lifting screening mechanism; 71. Lifting plate; 72. First spring; 73. Side screw; 74. Ring-shaped material guide platform; 8. Trigger-type closing mechanism; 81. Fixed collar; 82. Telescopic rod; 83. Sealing sleeve; 84. Lifting collar; 85. Second spring; 86. Third spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] The present invention provides Figure 1-5 A rice processing and polishing machine for reducing broken rice shown in the figure comprises a polishing cylinder 1, a first separating sleeve 2 and a second separating sleeve 3 are fixedly arranged at the bottom of the inner cavity of the polishing cylinder 1, the first separating sleeve 2 and the second separating sleeve 3 are distributed in concentric circles, a driving and lifting mechanism 4 is commonly arranged on the top, inside and bottom of the polishing cylinder 1, a feeding mechanism 5, a mixing and polishing mechanism 6, a lifting and screening mechanism 7 and a trigger-type closing mechanism 8 are arranged on the outside of the driving and lifting mechanism 4 in sequence from top to bottom, and the feeding mechanism 5, the mixing and polishing mechanism 6, the lifting and screening mechanism 7 and the trigger-type closing mechanism 8 are all located inside the polishing cylinder 1.

[0037] like Figure 3 and Figure 5As shown, the driving and lifting mechanism 4 includes a driving motor 41, a hollow screw 42, a polishing pill output hole 43, a polishing pill input hole 44, a lifting auger 45, a driven gear 46, a driving gear 47 and a threaded sleeve 48, wherein the driving motor 41 is fixedly arranged on the top of the polishing cylinder 1, and the two ends of the hollow screw 42 respectively penetrate the top of the polishing cylinder 1 and the bottom of the polishing cylinder 1, and are rotatably connected to the polishing cylinder 1 through a bearing, the hollow screw 42 is transmission-connected to the driving motor 41, and the polishing pill output hole 43 and the polishing pill input hole 44 are connected to the polishing pill output hole 43 and the polishing pill input hole 44. The front is opened at the front top and the front bottom of the hollow screw 42. The lifting auger 45 is rotatably nested in the hollow screw 42 through a bearing. The driven gear 46 is fixedly sleeved at the outer bottom of the lifting auger 45. There are two driving gears 47 and two threaded sleeves 48. The two driving gears 47 are respectively rotatably nested at the two sides of the bottom of the polishing tube 1 through bearings. The two threaded sleeves 48 are respectively fixedly sleeved on the outside of the two driving gears 47. The two driving gears 47 are meshed with the driven gear 46.

[0038] By setting the above structure, when the driving gear 47 rotates, the driven gear 46 can be driven to rotate through the threaded sleeve 48, and then the driven gear 46 drives the lifting auger 45 to rotate inside the hollow screw 42. At this time, the polishing balls entering the hollow screw 42 through the polishing ball input hole 44 can be transported upward by the lifting auger 45 and finally output through the polishing ball output hole 43.

[0039] like Figure 3 As shown, the material discharge mechanism 5 includes a first material guide hopper 51, a material discharge pipe 52, a guide rod 53, a blocking block 54 and an annular flexible baffle 55, wherein the first material guide hopper 51 is fixedly arranged at the top of the inner cavity of the polishing cylinder 1, the material discharge pipe 52 is fixedly arranged at the bottom opening of the first material guide hopper 51, two guide rods 53 are provided, and the two guide rods 53 are respectively fixedly arranged on both sides of the top of the material discharge pipe 52, and are fixedly connected to the inner wall of the polishing cylinder 1, the blocking block 54 is slidably sleeved on the outside of the two guide rods 53, the blocking block 54 is sleeved on the outside of the hollow screw 42, and is threadedly connected to the hollow screw 42, and the annular flexible baffle 55 is fixedly arranged at the bottom of the first material guide hopper 51, and is sleeved on the outside of the material discharge pipe 52.

[0040] By setting the above structure, when the hollow screw 42 drives the blocking block 54 to rise, the blocking block 54 can release the blockage of the top opening of the discharge pipe 52, so that the rice raw material can be continuously discharged through the discharge pipe 52. The annular flexible baffle 55 is used to block the pre-mixed rice raw material and the polishing pills, so as to avoid the separation of the polishing pills and the rice raw material due to excessive flying distance.

[0041] like Figure 3and Figure 4 As shown, the mixing and polishing mechanism 6 includes a second material guide hopper 61, a first material throwing disc 62, a connecting base 63, a second material throwing disc 64 and a mixing rod 65, wherein the second material guide hopper 61 is fixedly arranged in the middle of the inner cavity of the polishing cylinder 1, the first material throwing disc 62 is rotatably arranged on the inner side of the bottom opening of the second material guide hopper 61, a slider is fixedly arranged on the inner side of the first material throwing disc 62, a slide groove is opened on the surface of the hollow screw 42, and the slider is slidably arranged on the inner side of the slide groove along the vertical direction, the connecting base 63 is rotatably sleeved on the outer bottom of the first material throwing disc 62 through a bearing, the second material throwing disc 64 is fixedly sleeved on the outer side of the hollow screw 42, and is located below the polishing shot output hole 43, and a plurality of mixing rods 65 are arranged, and a plurality of the mixing rods 65 are evenly fixedly arranged on both sides of the hollow screw 42, and a plurality of the mixing rods 65 are all located above the second material guide hopper 61.

[0042] By setting the above structure, after the rice raw material falls on the top of the second throwing plate 64, the rice raw material can be pre-mixed with the polishing pills on the top of the second throwing plate 64 and then thrown by the second throwing plate 64, and the mixing rod 65 is driven by the hollow screw 42 to stir the rice raw material and the polishing pills, so that the rice raw material is effectively polished.

[0043] like Figure 4 and Figure 5 As shown, the lifting screening mechanism 7 includes a lifting plate 71, a first spring 72, a side screw 73 and an annular material guide platform 74, wherein the lifting plate 71 is sleeved on the outside of the hollow screw 42 and is threadedly connected to the hollow screw 42, the first spring 72 is sleeved on the outside of the hollow screw 42, and one end thereof is fixedly connected to the lifting plate 71 and the other end is fixedly connected to the connecting base 63, two side screws 73 are provided, and the two side screws 73 are respectively fixedly connected to the two sides of the bottom of the lifting plate 71, the annular material guide platform 74 is slidably sleeved on the outside of the two side screws 73, and is fixedly provided at the bottom of the inner cavity of the polishing cylinder 1, the outer wall of the annular material guide platform 74 is in contact with the inner wall of the second separating sleeve 3, and a plurality of polishing pills are provided on the inner side of the annular material guide platform 74.

[0044] By setting the above structure, when the lifting plate 71 descends, it can drive the two side screws 73 to descend synchronously, and then the side screws 73 drive the driving gear 47 to rotate. In addition, the side screws 73 can also play a guiding role, thereby preventing the lifting plate 71 from rotating synchronously with the hollow screw 42. The first spring 72 is set to drive the connecting base 63 to continue to descend.

[0045] like Figure 5As shown, the trigger-type closing mechanism 8 includes a fixed collar 81, a telescopic rod 82, a blocking sleeve 83, a lifting collar 84, a second spring 85 and a third spring 86, wherein the fixed collar 81 is fixedly sleeved on the outside of the hollow screw 42, the telescopic rod 82 is provided with two, the two telescopic rods 82 are respectively slidably penetrated and provided on both sides of the top of the fixed collar 81, the blocking sleeve 83 is slidably sleeved on the outside of the hollow screw 42 and is fixedly connected to the bottom ends of the two telescopic rods 82, the lifting collar 84 is slidably sleeved on the outside of the hollow screw 42 and is fixedly connected to the top ends of the two telescopic rods 82, the second spring 85 and the third spring 86 are both provided with two, the two second springs 85 are respectively sleeved on the outsides of the two telescopic rods 82, the second spring 85 is located between the fixed collar 81 and the blocking sleeve 83, the two third springs 86 are respectively sleeved on the outsides of the two telescopic rods 82, and the third spring 86 is located between the fixed collar 81 and the lifting collar 84.

[0046] By setting the above structure, when the lifting plate 71 descends, the lifting ring 84 can be pressed down. At this time, the second spring 85 is stretched first, and then the lifting ring 84 pushes the sealing sleeve 83 down through the telescopic rod 82, thereby completing the closure of the polishing pill input hole 44, avoiding the situation in which the polishing pills cannot be fully recovered due to the continuous upward output of the polishing pills during the screening process. Subsequently, as the lifting ring 84 continues to descend, the sealing sleeve 83 cannot continue to descend at this time, so the third spring 86 is compressed and the telescopic rod 82 is also shortened.

[0047] Example 2

[0048] The present invention also provides a polishing method for a rice processing polishing machine to reduce broken rice, which specifically comprises the following steps:

[0049] S1, adding rice raw materials into the polishing cylinder 1 through the feed hopper at the top of the polishing cylinder 1, and the rice raw materials are blocked by the first guide hopper 51 and then all accumulated on the top of the first guide hopper 51;

[0050] S2, start the driving motor 41. After the driving motor 41 is started, it drives the hollow screw 42 to rotate. When the hollow screw 42 rotates, it drives the blocking block 54 to gradually rise. At the same time, the hollow screw 42 also drives the lifting plate 71 to descend. During the descent of the lifting plate 71, due to the slide groove on the surface of the hollow screw 42 and the slider inside the first throwing plate 62, the hollow screw 42 drives the first throwing plate 62 to rotate continuously. In addition, when the lifting plate 71 descends, it drives the two side screws 73 to descend synchronously. When the side screws 73 descend, they drive the driving gear 47 to rotate. When the driving gear 47 rotates, it drives the lifting auger 45 to rotate through the threaded sleeve 48 and the driven gear 46. At this time, the polishing pills located on the inner side of the annular guide table 74 enter the hollow screw 42 through the polishing pill input hole 44, and move upward under the action of the lifting auger 45, and continuously move to the top of the second throwing plate 64 through the polishing pill output hole 43;

[0051] S3, after the blocking block 54 rises, the rice raw material on the top of the first guide hopper 51 continuously falls on the top of the second throwing plate 64, and is pre-mixed with the polishing pills on the top of the second throwing plate 64, and then is thrown outward by the second throwing plate 64, and the thrown rice raw material and the polishing pills are blocked by the annular flexible baffle 55, and then fall on the top of the second guide hopper 61, at this time, the multiple mixing rods 65 continue to rotate under the drive of the hollow screw 42, and then stir the rice raw material mixed with the polishing pills, so that the rice raw material is effectively polished;

[0052] S4, when the lifting plate 71 descends a distance that reaches a first threshold, polishing is completed, and the compressed first spring 72 is fully restored at this time. Subsequently, as the lifting plate 71 continues to descend, the lifting plate 71 drives the first throwing plate 62 to descend through the first spring 72 and the connecting base 63, and at the same time presses down the lifting ring 84, so that the lifting ring 84 drives the blocking sleeve 83 to descend. When the lifting plate 71 descends a distance that reaches a second threshold, the blocking sleeve 83 completes the sealing of the polishing pill input hole 44. At this time, the polishing pills can no longer enter the hollow screw 42 through the polishing pill input hole 44. In addition, the slider inside the connecting base 63 also slides to the lowermost end of the slide slot, and the connecting base 63 no longer continues to descend.

[0053] S5, after the first throwing disc 62 descends, the blockage of the bottom opening of the second material guide hopper 61 is released, and the polishing balls and the polished rice fall on the top of the first throwing disc 62 through the bottom opening of the second material guide hopper 61, and are then thrown by the first throwing disc 62 in a rotating state. At this time, since the mass of the polishing balls is greater than the mass of the intact rice, and the mass of the intact rice is greater than the mass of the broken rice, the thrown polishing balls fall into the inner side of the second separating sleeve 3, the intact rice falls between the second separating sleeve 3 and the first separating sleeve 2, and the broken rice falls to the outer side of the first separating sleeve 2;

[0054] S6. When the lifting plate 71 descends a distance that reaches a third threshold, the screening of the polishing balls, whole rice and broken rice is completed. At this time, the driving motor 41 drives the hollow screw 42 to rotate in the opposite direction, thereby resetting the unloading mechanism 5, the lifting screening mechanism 7 and the trigger-type closing mechanism 8. In addition, when the lifting plate 71 descends a distance that reaches the third threshold, the lifting plate 71 continuously presses down the lifting collar 84, thereby compressing the third spring 86, and the telescopic rod 82 gradually shortens.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rice processing and polishing machine for reducing broken rice, comprising a polishing cylinder (1), characterized in that: A first separation sleeve (2) and a second separation sleeve (3) are fixedly arranged at the bottom of the inner cavity of the polishing cylinder (1); the first separation sleeve (2) and the second separation sleeve (3) are arranged in concentric circles; a driving and lifting mechanism (4) is commonly arranged at the top of the polishing cylinder (1), inside the polishing cylinder (1) and at the bottom of the polishing cylinder (1); a material discharge mechanism (5), a material mixing and polishing mechanism (6), a lifting and screening mechanism (7) and a trigger-type closing mechanism (8) are arranged on the outside of the driving and lifting mechanism (4) in order from top to bottom; the material discharge mechanism (5), the material mixing and polishing mechanism (6), the lifting and screening mechanism (7) and the trigger-type closing mechanism (8) are all located inside the polishing cylinder (1); The driving and lifting mechanism (4) comprises a driving motor (41), a hollow screw (42), a polishing pill output hole (43), a polishing pill input hole (44), a lifting auger (45), a driven gear (46), a driving gear (47) and a threaded sleeve (48); The driving motor (41) is fixedly arranged at the top of the polishing cylinder (1); the two ends of the hollow screw (42) respectively penetrate the top of the polishing cylinder (1) and the bottom of the polishing cylinder (1), and are rotatably connected to the polishing cylinder (1) via bearings; the hollow screw (42) is transmission-connected to the driving motor (41); the polishing pill output hole (43) and the polishing pill input hole (44) are arranged at the top and bottom of the front of the hollow screw (42); the lifting auger (45) is rotatably nested inside the hollow screw (42) via bearings; the driven gear (46) is fixedly sleeved at the bottom of the outer side of the lifting auger (45); two driving gears (47) and two threaded sleeves (48) are each provided; the two driving gears (47) are rotatably nested at both sides of the bottom of the polishing cylinder (1) via bearings; the two threaded sleeves (48) are fixedly sleeved at the outer sides of the two driving gears (47); and the two driving gears (47) are meshed with the driven gear (46); The material discharge mechanism (5) comprises a first material guide hopper (51), a material discharge pipe (52), a guide rod (53), a blocking block (54) and an annular flexible baffle (55); The blocking block (54) is slidably sleeved on the outside of the two guide rods (53), the blocking block (54) is sleeved on the outside of the hollow screw (42) and is threadedly connected to the hollow screw (42), and the annular flexible baffle (55) is fixedly arranged at the bottom of the first guide hopper (51) and sleeved on the outside of the discharge pipe (52); The mixing and polishing mechanism (6) comprises a second material guide hopper (61), a first material throwing plate (62), a connecting base (63), a second material throwing plate (64) and a mixing rod (65); The second material guide hopper (61) is fixedly arranged in the middle of the inner cavity of the polishing cylinder (1); the first material throwing disc (62) is rotatably arranged on the inner side of the bottom opening of the second material guide hopper (61); a slider is fixedly arranged on the inner side of the first material throwing disc (62); a slide groove is opened on the surface of the hollow screw (42); the slider is slidably arranged on the inner side of the slide groove along the vertical direction; the connecting base (63) is rotatably sleeved on the outer bottom of the first material throwing disc (62) through a bearing; the second material throwing disc (64) is fixedly sleeved on the outer side of the hollow screw (42) and is located below the polishing pill output hole (43); a plurality of mixing rods (65) are arranged; the plurality of mixing rods (65) are evenly fixedly arranged on both sides of the hollow screw (42); and the plurality of mixing rods (65) are all located above the second material guide hopper (61); The lifting screening mechanism (7) comprises a lifting plate (71), a first spring (72), a side screw (73) and an annular material guiding platform (74); The lifting plate (71) is sleeved and arranged on the outside of the hollow screw (42) and is threadedly connected to the hollow screw (42); the first spring (72) is sleeved and arranged on the outside of the hollow screw (42), and one end of the first spring is fixedly connected to the lifting plate (71) and the other end is fixedly connected to the connecting base (63); two side screws (73) are provided, and the two side screws (73) are respectively fixedly connected to the two sides of the bottom of the lifting plate (71); the annular material guide platform (74) is slidably sleeved and arranged on the outside of the two side screws (73) and is fixedly arranged at the bottom of the inner cavity of the polishing cylinder (1); the outer wall of the annular material guide platform (74) is in contact with the inner wall of the second separation sleeve (3); and a plurality of polishing balls are arranged on the inner side of the annular material guide platform (74); The trigger-type sealing mechanism (8) comprises a fixing collar (81), a telescopic rod (82), a blocking sleeve (83), a lifting collar (84), a second spring (85) and a third spring (86); The fixing collar (81) is fixedly sleeved on the outside of the hollow screw (42); two telescopic rods (82) are provided, and the two telescopic rods (82) are respectively slidably penetrated and provided on both sides of the top of the fixing collar (81); the blocking sleeve (83) is slidably sleeved on the outside of the hollow screw (42) and fixedly connected to the bottom ends of the two telescopic rods (82); the lifting collar (84) is slidably sleeved on the outside of the hollow screw (42) and fixedly connected to the top ends of the two telescopic rods (82); two second springs (85) and two third springs (86) are provided, and the two second springs (85) are respectively sleeved on the outside of the two telescopic rods (82); the second springs (85) are located between the fixing collar (81) and the sealing sleeve (83); the two third springs (86) are respectively sleeved on the outside of the two telescopic rods (82); the third springs (86) are located between the fixing collar (81) and the lifting collar (84).

2. A rice processing and polishing machine for reducing broken rice according to claim 1, characterized in that: The first material guide hopper (51) is fixedly arranged at the top of the inner cavity of the polishing cylinder (1), the material discharge pipe (52) is fixedly arranged at the bottom opening of the first material guide hopper (51), and two guide rods (53) are provided. The two guide rods (53) are respectively fixedly arranged at two sides of the top of the material discharge pipe (52) and are fixedly connected to the inner wall of the polishing cylinder (1).

3. A rice processing and polishing machine for reducing broken rice according to claim 2, characterized in that: Also included is a polishing method for a rice processing polishing machine to reduce broken rice, which specifically comprises the following steps: S1, adding rice raw materials into the polishing cylinder (1) through the feed hopper at the top of the polishing cylinder (1), and the rice raw materials are blocked by the first guide hopper (51) and then all accumulated on the top of the first guide hopper (51); S2, start the driving motor (41), after the driving motor (41) is started, the hollow screw (42) is driven to rotate, and when the hollow screw (42) rotates, the blocking block (54) is driven to gradually rise, and at the same time, the hollow screw (42) also drives the lifting plate (71) to descend. During the process of the lifting plate (71) descending, due to the sliding groove on the surface of the hollow screw (42) and the slider inside the first throwing plate (62), the hollow screw (42) drives the first throwing plate (62) to continue to rotate. In addition, when the lifting plate (71) descends, it drives the two The side screw (73) descends synchronously, and when the side screw (73) descends, it drives the driving gear (47) to rotate. When the driving gear (47) rotates, it drives the lifting auger (45) to rotate through the threaded sleeve (48) and the driven gear (46). At this time, the polishing balls located on the inner side of the annular guide table (74) enter the hollow screw (42) through the polishing ball input hole (44), and move upward under the action of the lifting auger (45), and continue to move to the top of the second throwing plate (64) through the polishing ball output hole (43); S3, after the blocking block (54) rises, the rice raw material on the top of the first material guide hopper (51) continuously falls on the top of the second throwing plate (64) and is pre-mixed with the polishing pills on the top of the second throwing plate (64), and then is thrown outwards by the second throwing plate (64), and the thrown rice raw material and the polishing pills are blocked by the annular flexible baffle (55) and then fall on the top of the second material guide hopper (61). At this time, the plurality of mixing rods (65) are continuously rotated under the drive of the hollow screw (42), and the rice raw material mixed with the polishing pills is stirred, so that the rice raw material is effectively polished; S4, when the lifting plate (71) descends a distance that reaches a first threshold, polishing is completed, and the compressed first spring (72) is completely restored. Subsequently, as the lifting plate (71) continues to descend, the lifting plate (71) drives the first material throwing plate (62) to descend through the first spring (72) and the connecting base (63), and at the same time presses down the lifting ring (84), so that the lifting ring (84) drives the blocking sleeve (83) to descend. When the lifting plate (71) descends a distance that reaches a second threshold, the blocking sleeve (83) completes the sealing of the polishing pill input hole (44), and the polishing pill can no longer enter the hollow screw (42) through the polishing pill input hole (44). In addition, the slider inside the connecting base (63) also slides to the lowermost end of the slide groove, and the connecting base (63) no longer continues to descend. S5, after the first throwing plate (62) descends, the blockage of the bottom opening of the second material guide hopper (61) is released, and the polishing balls and the polished rice fall onto the top of the first throwing plate (62) through the bottom opening of the second material guide hopper (61), and are then thrown by the rotating first throwing plate (62). At this time, since the mass of the polishing balls is greater than the mass of the intact rice, and the mass of the intact rice is greater than the mass of the broken rice, the thrown polishing balls fall into the inner side of the second separation sleeve (3), the intact rice falls between the second separation sleeve (3) and the first separation sleeve (2), and the broken rice falls to the outer side of the first separation sleeve (2); S6. When the lifting plate (71) descends a distance that reaches a third threshold value, the screening of the polishing balls, the whole rice, and the broken rice is completed. At this time, the driving motor (41) drives the hollow screw (42) to rotate in the opposite direction, thereby resetting the unloading mechanism (5), the lifting screening mechanism (7), and the trigger-type closing mechanism (8). In addition, when the lifting plate (71) descends a distance that reaches the third threshold value, the lifting plate (71) continues to press down the lifting collar (84), thereby compressing the third spring (86), and at the same time, the telescopic rod (82) gradually shortens.

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