Sand roller polishing device for rice mill outlet

Abstract

The present invention discloses a sand roller polishing device for a rice milling machine outlet, which relates to the technical field of rice production, and comprises a polishing seat and a polishing component. A plurality of polishing rollers are rotatably arranged between the front and rear side walls inside the polishing seat, and the front and rear side walls of the polishing seat are fixed with a hollow adjustment seat. The inner bottom end of the hollow adjustment seat is rotatably provided with a plurality of supporting rollers, and a conveyor belt is wound around the outer wall of the plurality of supporting rollers. The axial ends of the polishing rollers are respectively rotated through rectangular adjustment holes and then extend into the two hollow adjustment seats, and the ends of the polishing rollers are rotatably fitted with the upper end of the conveyor belt, and the gap between the adjacent two polishing rollers is adjusted by the adjusting component. The present invention sequentially adjusts the gap between adjacent polishing rollers by the adjusting component, and the polished rice falls through the gap, realizing batch orderly polishing operation, changing the traditional method of exporting rice at one time after a single large amount of polishing, and avoiding that some rice grains are exported without polishing operation, thereby affecting the efficiency of rice processing.

Description

Technical Field

[0001] The invention relates to the technical field of rice production, in particular to a sand roller polishing device for a discharge port of a rice mill. Background Art

[0002] The emery roller rice mill is a common machine used to grind away the cortex of brown rice. There are dense and hard sand blades on the surface of the emery roller. The brown rice enters the milling chamber and is quickly peeled under the high-speed rotation of the emery roller. During the rotation of the emery roller, the rice is polished, which is to finely grind and polish the surface of the rice to improve the smoothness of the rice, so that the surface of the rice grains is as smooth as washed and has a crystal-like luster like pearls. It is an important process in the fine processing of rice. The current emery roller polishing device usually uses a polishing roller for polishing operation, but it is difficult to ensure the polishing effect using only a polishing roller. Since the rice grains are small, there are many rice grains during a single polishing operation, and some rice grains will be discharged without polishing operation, resulting in poor polishing effect, affecting the processing efficiency of rice. Therefore, a emery roller polishing device for the discharge port of the rice mill is designed here to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a sand roller polishing device for a rice milling machine discharge port to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sand roller polishing device at the discharge port of a rice mill comprises a polishing seat and a polishing component, a feed hopper is provided at the upper end of the polishing seat, the polishing component comprises a plurality of polishing rollers, the plurality of polishing rollers are rotatably arranged between the front and rear side walls inside the polishing seat, and the plurality of polishing rollers are rotatably fitted together to receive and polish rice.

[0005] Hollow adjustment seats are fixed to the side walls on both sides of the front and rear of the polishing seat, and rectangular adjustment holes are opened on the side walls of the hollow adjustment seat and the side walls of the polishing seat, a plurality of supporting rollers are rotatably provided at the inner bottom end of the hollow adjustment seat, and a conveyor belt is wound around the outer walls of the plurality of supporting rollers, the axial ends of the polishing roller respectively rotate through the rectangular adjustment holes and extend into the two hollow adjustment seats, and the end of the polishing roller is rotatably fitted with the upper end of the conveyor belt, a motor is fixed to the outer wall of one of the hollow adjustment seats, the output end of the motor rotates through the side wall of the hollow adjustment seat and is connected to a supporting roller on the edge, the motor drives one of the supporting rollers to rotate, and the conveyor belt rotates synchronously through the cooperation with the supporting roller, and because the end of the polishing roller is rotatably fitted with the upper end of the conveyor belt, the rotation of the conveyor belt can drive the plurality of polishing rollers to rotate synchronously, and the plurality of polishing rollers rotate and fit together to receive the polished rice, and the rotation of the polishing roller can perform a polishing operation on the rice.

[0006] The gap between two adjacent polishing rollers is adjusted by an adjusting component. The gap between adjacent polishing rollers is adjusted in turn by the adjusting component, and the polished rice falls through the gap to realize batch and orderly polishing operation, changing the traditional way of exporting rice at one time after a large amount of single polishing, avoiding the phenomenon that some rice grains are exported without polishing operation, thereby avoiding affecting the processing efficiency of rice.

[0007] In a further embodiment, both side walls of the hollow adjustment seat are slidably inserted with T-rods, and one end of the T-rod located inside the hollow adjustment seat is rotatably connected to an arc-shaped push block. The two arc-shaped push blocks inside the same hollow adjustment seat respectively press against the outer walls of the two polishing rollers on the leftmost and rightmost sides. The outer wall of the T-rod is sleeved with an elliptical elastic steel ring. By utilizing the elastic potential energy of the elliptical elastic steel ring, the T-rod can drive the arc-shaped push block to press against the outer wall of the end of the polishing roller on the side in real time, ensuring that all polishing rollers will not separate without the intervention of adjustment components, thereby preventing rice from leaking out and being exported without being polished, and no rework is required.

[0008] In a further embodiment, rubber shielding plates are connected to both sides of the bottom end of the feed hopper of the polishing seat, and the front and rear sides of the bottom end of the rubber shielding plates are respectively fixedly connected to the front and rear side walls of the two arc-shaped push blocks, and the rubber shielding plates on both sides are used as shielding parts for the leftmost and left and right polishing rollers. Since the arc-shaped push blocks are pressed against the outer wall of the end of the polishing roller in real time, the end of the rubber shielding plate can be pressed against the outer wall of the polishing roller to prevent rice from falling from the outside of the leftmost or rightmost polishing roller.

[0009] In a further embodiment, a pressure plate is slidingly provided inside the hollow adjustment seat and is pressed on the upper side of the ends of several polishing rollers. Two arc-shaped stainless steel pressure blocks are fixed to the top side walls inside the hollow adjustment seat, and the ends of the two arc-shaped stainless steel pressure blocks are against both sides of the upper end surface of the pressure plate. The elastic potential energy of the arc-shaped stainless steel pressure blocks can be used to press down the pressure plate in real time, which can press down all the polishing rollers and ensure that the ends of the polishing rollers can be fitted on the conveyor belt in real time to avoid transmission slippage.

[0010] In a further embodiment, the adjusting component includes a second motor and a plurality of shifting blocks, wherein the second motor is fixed to the right side wall of the polishing seat, the output end of the second motor rotates and extends into the polishing seat and is fixedly connected to a transmission shaft located below a plurality of polishing rollers, and the plurality of shifting blocks are fixedly arranged on the outer wall of the transmission shaft in a spiral structure, and the end of the shifting block is a straight-line structure, and the shifting block moves in a circular motion with the transmission shaft as the center, so as to spread apart two adjacent polishing rollers, and allow rice to fall through the gap.

[0011] In a further embodiment, the polishing seat is provided with a plurality of discharge channels located below the plurality of polishing rollers, the bottom end of the polishing seat is provided with a plurality of notches connected to the discharge channels, the notches are provided with conveying components capable of conveying the rice discharged from the discharge channels, and the rice discharged from each discharge channel is received by the conveying components and discharged to the next process.

[0012] In a further embodiment, the conveying component includes two baffles, a plurality of supporting rollers 2 are rotatably arranged between the two baffles, a conveyor belt 2 is wrapped around the outer walls of the plurality of supporting rollers 2, supporting columns are fixed at both ends of the outer walls of the two baffles, a motor 3 is fixed to the top of the side wall of one of the supporting columns, the output end of the motor 3 passes through the supporting column and the side wall of the baffle, and is connected to the sidemost supporting roller 2, the motor 3 drives one of the supporting rollers 2 to rotate, and the motor 3 rotates in coordination with the supporting roller 2, so as to rotate the conveyor belt 2 and export the polished rice received.

[0013] In a further embodiment, a plurality of polishing parts 2 are provided on the side of the bottom end of the discharge channel.

[0014] The second polishing component includes two lifting rods, the top end of the lifting rods is fixedly connected to the side position of the bottom end of the discharge channel, and the bottom ends of the side walls on both sides of the lifting rods are fixed with arc-shaped stainless steel connecting rods. A winding roller is fixed between the two arc-shaped stainless steel connecting rods on the same side, and a polishing belt is wound between the two winding rollers. The polishing belt is in contact with the upper end surface of the second conveyor belt.

[0015] In a further embodiment, a particle groove for placing rice grains is opened on the outer side wall of the second conveyor belt. The rice falling on the second conveyor belt falls into the particle groove. The rice in the particle groove is synchronously conveyed along the second conveyor belt through the polishing belt. The rice will not be blocked due to the contact between the polishing belt and the upper end surface of the second conveyor belt, thereby ensuring efficient polishing operation.

[0016] In a further embodiment, the supporting roller 2 located between two adjacent polishing parts is an elliptical structure, and a tooth block is fixed to the outer wall of the supporting roller 2 with the elliptical structure. The inner wall of the conveyor belt 2 is provided with a tooth groove engaged with the tooth block. Through the engagement of the tooth block and the tooth groove, the supporting roller 2 with the elliptical structure can be driven to rotate, that is, the major semi-axis and the minor semi-axis can be alternately changed, the conveyor belt 2 can be frequently lifted upward, and the rice grains on the conveyor belt 2 can be shaken, so that the rice grains change position during the polishing process, thereby passing through each polishing belt to achieve efficient polishing operation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention is a sand roller polishing device for a rice milling machine discharge port, which utilizes a plurality of polishing rollers to rotate and fit together to receive rice to be polished, a motor drives one of the conveyor belts to transmit, and can provide rotational power for the polishing rollers. The polishing rollers rotate to perform a polishing operation on the rice, and the gaps between adjacent polishing rollers are adjusted in sequence by adjusting components, and the polished rice falls through the gaps, thereby realizing batch orderly polishing operations, changing the traditional method of exporting rice at one time after a large amount of single polishing, and avoiding the phenomenon that some rice grains are exported without being polished, thereby avoiding affecting the processing efficiency of the rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the hollow adjustment seat structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 A magnified view of the structure at center;

[0022] Figure 4 It is a schematic diagram of the connection structure between the arc-shaped push block and the rubber shielding plate of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the motor 2 and the transmission shaft of the present invention;

[0024] Figure 6 It is a side view of the transmission shaft and shift block structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the polishing seat of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the second polishing component of the present invention;

[0027] Fig. 9 For the present invention Figure 7 Enlarged view of the structure at point B in the middle.

[0028] In the figure: 1. polishing seat; 2. motor 2; 21. transmission shaft; 22. shift block; 3. transmission component; 31. support column; 32. baffle; 33. conveyor belt 2; 34. support roller 2; 35. tooth block; 36. particle groove; 4. polishing component 1; 41. hollow adjustment seat; 42. motor 1; 43. polishing roller; 44. pressure plate; 45. support roller 1; 46. arc push block; 47. T-bar; 48. arc stainless steel pressure block; 49. conveyor belt 1; 5. rubber baffle; 6. lifting rod; 61. arc stainless steel connecting rod; 62. winding roller; 63. polishing belt. DETAILED DESCRIPTION

[0029] The following will be described clearly and completely in conjunction with 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.

[0030] Embodiment 1

[0031] See also Figure 1-Figure 9

[0032] This embodiment provides a rice milling machine discharge port sand roller polishing device, including a rice milling machine discharge port sand roller polishing device, including a polishing seat 1 and a polishing component 4, the upper end of the polishing seat 1 is provided with a feed hopper, such as Figure 1 The rice to be polished is poured into the polishing seat 1 through the feed hopper. The polishing component 4 includes a plurality of polishing rollers 43. The plurality of polishing rollers 43 are rotatably arranged between the front and rear side walls inside the polishing seat 1. The plurality of polishing rollers 43 are rotated and fitted together to receive the rice to be polished. The polishing rollers 43 rotate to perform a polishing operation on the rice.

[0033] Hollow adjustment seats 41 are fixed to the side walls on both sides of the polishing seat 1, and rectangular adjustment holes are opened on the side walls of the hollow adjustment seat 41 and the side walls of the polishing seat 1. A plurality of support rollers 45 are rotatably provided at the bottom end of the inner part of the hollow adjustment seat 41, and a conveyor belt 49 is wound around the outer wall of the plurality of support rollers 45. The axial ends of the polishing roller 43 are respectively rotated to pass through the rectangular adjustment holes and then extend into the two hollow adjustment seats 41, and the end of the polishing roller 43 is rotatably fitted with the upper end of the conveyor belt 49, such as Figure 2 As shown, a motor 42 is fixed to the outer wall of one of the hollow adjustment seats 41, and the output end of the motor 42 rotates through the side wall of the hollow adjustment seat 41 and is connected to a support roller 45 at the side, as shown in FIG. Figure 1 As shown, a motor 42 drives one of the supporting rollers 45 to rotate, and a conveyor belt 49 rotates synchronously with the supporting roller 45 through the motor 42. Since the end of the polishing roller 43 rotates and fits with the upper end of the conveyor belt 49, the rotation of the conveyor belt 49 can drive several polishing rollers 43 to rotate synchronously. Several polishing rollers 43 rotate and fit together to receive the rice to be polished. The rotation of the polishing roller 43 can perform a polishing operation on the rice.

[0034] The conventional polishing roller 43 is used for polishing rice in most cases by distributing two polishing rollers 43 in parallel, and setting a gap for leaking rice between the two polishing rollers 43, that is, the rice put into the polishing seat 1 is polished between the two polishing rollers 43. Although this method can also play a polishing role, during the polishing process, some rice is directly leaked out without avoiding contact with the polishing roller 43, resulting in the glossiness of the final product of rice failing to reach the pre-approved glossiness and failing to meet market consumption demand, requiring rework and continued polishing operation, which results in low polishing efficiency and affects rice production efficiency.

[0035] By adopting a plurality of polishing rollers 43 that rotate and fit together in parallel, during the polishing operation, two adjacent polishing rollers 43 rotate and fit together to form a receiving assembly to receive the rice, so that the rice is spread evenly on the plurality of polishing rollers 43. When all the polishing rollers 43 rotate, the rice can be polished quickly, and there will be no leakage of rice during the polishing process.

[0036] Motor 1 42 adopts a servo motor, which can make the conveyor belt 1 49 drive the polishing roller 43 to rotate forward and reverse by rotating forward and reverse, which helps to make the rice creep inside the polishing seat 1, avoid the polishing roller 43 only polishing the rice at the same position, avoid the rice breaking caused by excessive polishing, and at the same time ensure that the rice at the same position can be polished by the polishing roller 43, thereby improving the polishing efficiency.

[0037] The gap between two adjacent polishing rollers 43 is adjusted by an adjusting component, such as Figure 5 and Figure 6 As shown, the gaps between adjacent polishing rollers 43 are adjusted in sequence by adjusting components, and the polished rice falls through the gaps, thereby realizing batch and orderly polishing operations, changing the traditional method of exporting rice at one time after a large amount of single polishing, and avoiding the phenomenon that some rice grains are exported without being polished, thereby avoiding affecting the processing efficiency of rice.

[0038] The adjusting component includes a motor 2 and a plurality of shifting blocks 22. The motor 2 is fixed to the right side wall of the polishing seat 1. The output end of the motor 2 is rotated to extend into the polishing seat 1 and is fixedly connected to a transmission shaft 21 located below the plurality of polishing rollers 43. The plurality of shifting blocks 22 are fixedly arranged on the outer wall of the transmission shaft 21 in a spiral structure. The end of the shifting block 22 is a straight-line structure. The motor 2 drives the transmission shaft 21 to rotate, so that the shifting block 22 performs a circular motion with the transmission shaft 21 as the center. The plurality of shifting blocks 22 can rotate in sequence and pass between two adjacent polishing rollers 43 at corresponding positions, that is, to open the two adjacent polishing rollers 43. The advantage of such a setting is that, on the one hand, the rice can fall through the gap between two adjacent polishing rollers 43 at different positions, and on the other hand, it can avoid the rice on the plurality of polishing rollers 43 being completely exported at one time from leaking out all at once, thereby extending the contact time between the rice and the polishing roller 43 and improving the polishing efficiency.

[0039] Embodiment 2

[0040] Further improvements have been made on the basis of Example 1:

[0041] like Figure 2-Figure 3 As shown, T-shaped rods 47 are slidably inserted into the side walls of the hollow adjustment seat 41, and one end of the T-shaped rod 47 located inside the hollow adjustment seat 41 is rotatably connected to an arc-shaped push block 46. The two arc-shaped push blocks 46 inside the same hollow adjustment seat 41 are respectively pressed against the outer walls of the two polishing rollers 43 on the left and right, and the outer wall of the T-shaped rod 47 is sleeved with an elliptical elastic steel ring. By utilizing the elastic potential energy of the elliptical elastic steel ring, the T-shaped rod 47 can drive the arc-shaped push block 46 to press against the outer wall of the end of the polishing roller 43 on the side in real time, ensuring that all the polishing rollers 43 will not separate without the intervention of the adjustment components, thereby preventing the rice from leaking out and being exported without being polished, and no rework is required.

[0042] Both sides of the bottom end of the feed hopper of the polishing seat 1 are connected to rubber shielding plates 5, and the front and rear sides of the bottom end of the rubber shielding plate 5 are fixedly connected to the side walls of the front and rear arc-shaped push blocks 46 respectively. Figure 4 As shown, the rubber shielding plates 5 on both sides are used as shielding parts for the leftmost and left and right side polishing rollers 43. Since the arc-shaped push block 46 is pressed against the outer wall of the end of the polishing roller 43 in real time, the end of the rubber shielding plate 5 can be pressed against the outer wall of the polishing roller 43 to prevent rice from falling from the outside of the leftmost or rightmost polishing roller 43.

[0043] The rubber shielding plate 5 has a reversible deformation property. When all the polishing rollers 43 rotate and fit together, the rubber shielding plate 5 is in a tensioned state, and acts as a shielding member to shield the rice on the sides to prevent the rice from falling. When the adjusting component opens the polishing rollers 43, the polishing rollers 43 on both sides will be offset, and the rubber shielding plate 5 will bend and reversibly deform, but it still plays a shielding role to prevent the rice from falling.

[0044] A pressing plate 44 is slidably disposed inside the hollow adjustment seat 41 and is pressed on the upper side of the ends of the plurality of polishing rollers 43. Two arc-shaped stainless steel pressing blocks 48 are fixed to the top side wall inside the hollow adjustment seat 41, and the ends of the two arc-shaped stainless steel pressing blocks 48 are against both sides of the upper end surface of the pressing plate 44. Figure 3 As shown, the elastic potential energy of the arc-shaped stainless steel pressing block 48 is utilized to press down the pressing plate 44 in real time, which can press down all the polishing rollers 43, ensuring that the ends of the polishing rollers 43 can be fitted on the conveyor belt 49 in real time to avoid transmission slippage.

[0045] Embodiment 3

[0046] Further improvements have been made on the basis of Example 2:

[0047] The polishing seat 1 is provided with a plurality of discharge channels located below the plurality of polishing rollers 43. The bottom end of the polishing seat 1 is provided with a plurality of gaps connected to the discharge channels. The gaps are provided with a conveying member 3 capable of conveying the rice guided out of the discharge channels. Figure 1 and Figure 7 As shown, a plurality of discharge channels are used to receive the rice discharged from the gap between two adjacent polishing rollers 43 to prevent the rice from butting together, and then the rice discharged from each discharge channel is received by the conveying component 3 and discharged to the next process.

[0048] The conveying component 3 includes two baffles 32, and a plurality of supporting rollers 2 34 are rotatably arranged between the two baffles 32. A conveyor belt 2 33 is wound around the outer walls of the plurality of supporting rollers 2 34. Support posts 31 are fixed at both ends of the outer walls of the two baffles 32. A motor 3 is fixed to the top of the side wall of one of the supporting posts 31. The output end of the motor 3 passes through the supporting post 31 and the side wall of the baffle 32, and is connected to a supporting roller 2 34 at the edge. The motor 3 drives one of the supporting rollers 2 34 to rotate, and the motor 3 rotates in coordination with the supporting roller 2 34, so as to rotate the conveyor belt 2 33 and export the polished rice received.

[0049] Embodiment 4

[0050] Further improvements have been made on the basis of Example 3:

[0051] The bottom side of the discharge channel is provided with a plurality of polished parts 2, such as Figure 7-Figure 8 As shown, the rice polished by the polishing part 1 4 is polished again by the polishing part 2 to improve the polishing efficiency.

[0052] The second polishing component includes two lifting rods 6, the top of the lifting rods 6 is fixedly connected to the side position of the bottom end of the discharge channel, and the bottom ends of the side walls on both sides of the lifting rods 6 are fixed with arc-shaped stainless steel connecting rods 61. A winding roller 62 is fixed between the two arc-shaped stainless steel connecting rods 61 on the same side, and a polishing belt 63 is wound between the two winding rollers 62. Since the polishing belt 63 is in contact with the upper end surface of the conveyor belt 2 33, the polishing belt 63 can polish the rice passing through again.

[0053] like Fig. 9 As shown, the outer wall of the second conveyor belt 33 is provided with a grain groove 36 for placing rice grains. The rice falling on the second conveyor belt 33 falls into the grain groove 36. The rice located in the grain groove 36 is synchronously conveyed along the second conveyor belt 33 through the polishing belt 63. The rice will not be blocked due to the contact between the polishing belt 63 and the upper end surface of the second conveyor belt 33, thereby ensuring efficient polishing operation.

[0054] The support roller 2 34 located between two adjacent polishing parts is an elliptical structure, and a tooth block 35 is fixed to the outer wall of the support roller 2 34 of the elliptical structure, and a tooth groove engaged with the tooth block 35 is opened on the inner wall of the conveyor belt 2 33. During the conveying process of the conveyor belt 2 33, the tooth block 35 and the tooth groove are engaged, which can drive the support roller 2 34 of the elliptical structure to rotate, that is, the major semi-axis and the minor semi-axis are alternately changed, and the conveyor belt 2 33 can be frequently lifted upward, and the rice grains on the conveyor belt 2 33 can be shaken, so that the rice grains change position during the polishing process, thereby passing through each polishing belt 63, and realizing efficient polishing operation.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand roller polishing device for a rice mill outlet, comprising a polishing seat (1) and a polishing component (4), wherein a feed hopper is provided at the upper end of the polishing seat (1), and the device is characterized in that: The polishing component (4) comprises a plurality of polishing rollers (43), the plurality of polishing rollers (43) being rotatably arranged between the front and rear side walls inside the polishing seat (1), and the plurality of polishing rollers (43) being rotatably fitted together to receive the polished rice; The front and rear side walls of the polishing seat (1) are both fixed with hollow adjustment seats (41), and the side walls of the hollow adjustment seat (41) and the side walls of the polishing seat (1) are both provided with rectangular adjustment holes, the inner bottom end of the hollow adjustment seat (41) is rotatably provided with a plurality of support rollers (45), the outer walls of the plurality of support rollers (45) are wound with a conveyor belt (49), the axial ends of the polishing roller (43) are respectively rotated to pass through the rectangular adjustment holes and then extend into the two hollow adjustment seats (41), and the end of the polishing roller (43) is rotatably fitted with the upper end of the conveyor belt (49), a motor (42) is fixed to the outer wall of one of the hollow adjustment seats (41), and the output end of the motor (42) is rotatably passed through the side wall of the hollow adjustment seat (41) and connected to the support roller (45) at the farthest side; The gap between two adjacent polishing rollers (43) is adjusted by an adjusting component; The adjusting component comprises a second motor (2) and a plurality of shifting blocks (22), wherein the second motor (2) is fixed to the right side wall of the polishing seat (1), the output end of the second motor (2) rotates and extends into the polishing seat (1) and is fixedly connected to a transmission shaft (21) located below the plurality of polishing rollers (43), the plurality of shifting blocks (22) are fixedly arranged on the outer wall of the transmission shaft (21) in a spiral structure, the end of the shifting block (22) is a straight-line structure, the shifting block (22) performs a circular motion with the transmission shaft (21) as the center, and can spread two adjacent polishing rollers (43) apart, so that rice falls through the gap; The polishing seat (1) is provided with a plurality of discharge channels located below the plurality of polishing rollers (43) inside, and a plurality of notches communicating with the discharge channels are provided at the bottom end of the polishing seat (1), wherein a conveying component (3) capable of conveying rice discharged from the discharge channels is provided in the notch; The conveying component (3) comprises two baffles (32), a plurality of supporting rollers (34) are rotatably arranged between the two baffles (32), a conveyor belt (33) is wound around the outer walls of the plurality of supporting rollers (34), supporting columns (31) are fixed at both ends of the outer walls of the two baffles (32), a motor (3) is fixed at the top end of the side wall of one of the supporting columns (31), and an output end of the motor (3) passes through the supporting column (31) and the side wall of the baffle (32), and is connected to a supporting roller (34) at the outermost side.

2. The sand roller polishing device for the discharge port of the rice mill according to claim 1, characterized in that: Both side walls of the hollow adjustment seat (41) are slidably connected with a T-shaped rod (47), one end of the T-shaped rod (47) located inside the hollow adjustment seat (41) is rotatably connected with an arc-shaped push block (46), and two arc-shaped push blocks (46) inside the same hollow adjustment seat (41) are respectively pressed against the outer walls of the two polishing rollers (43) on the leftmost side and the rightmost side; The outer wall of the T-shaped rod (47) is sleeved with an elliptical elastic steel ring.

3. The sand roller polishing device for the discharge port of the rice mill according to claim 2, characterized in that: Both sides of the bottom end of the feed hopper of the polishing seat (1) are connected to rubber shielding plates (5), and the front and rear sides of the bottom end of the rubber shielding plates (5) are fixedly connected to the side walls of the front and rear arc-shaped push blocks (46) respectively.

4. The sand roller polishing device for the discharge port of the rice mill according to claim 2, characterized in that: A pressure plate (44) is slidably provided inside the hollow adjustment seat (41) and is pressed on the upper side of the ends of the plurality of polishing rollers (43). Two arc-shaped stainless steel pressure blocks (48) are fixed to the top side wall inside the hollow adjustment seat (41), and the ends of the two arc-shaped stainless steel pressure blocks (48) are against both sides of the upper end surface of the pressure plate (44).

5. The sand roller polishing device for the discharge port of a rice mill according to claim 1, characterized in that: A plurality of polishing parts 2 are provided on the side of the bottom end of the discharge channel; The second polishing component comprises two hoisting rods (6), the top end of the hoisting rods (6) being fixedly connected to the side position of the bottom end of the discharge channel, the bottom ends of the side walls on both sides of the hoisting rods (6) are fixed with arc-shaped stainless steel connecting rods (61), a winding roller (62) is fixed between the two arc-shaped stainless steel connecting rods (61) on the same side, a polishing belt (63) is wound between the two winding rollers (62), and the polishing belt (63) is in contact with the upper end surface of the second conveyor belt (33).

6. The sand roller polishing device for the discharge port of the rice mill according to claim 5, characterized in that: The outer side wall of the second conveyor belt (33) is provided with a particle groove (36) for placing rice particles.

7. The sand roller polishing device for the discharge port of a rice mill according to claim 6, characterized in that: The second support roller (34) located between two adjacent polishing components is an elliptical structure, a tooth block (35) is fixed on the outer wall of the second support roller (34) of the elliptical structure, and a tooth groove meshing with the tooth block (35) is formed on the inner side wall of the second conveyor belt (33).

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