阅读说明：本技术 一种抛光丸粒循环式大米抛光机 (Polishing pill circulating type rice polishing machine ) 是由 方波 吴俊松 于 2021-10-13 设计创作，主要内容包括：本发明涉及大米抛光技术领域,具体的说是一种抛光丸粒循环式大米抛光机,包括底座,所述底座上端右侧设置有竖直布置的螺旋提升机,所述螺旋提升机内设置有竖直布置的第二转轴,所述第二转轴外周固定设置有螺旋绞龙；所述螺旋提升机上端设置有与外部机架固定连接的顶板,所述顶板上端固定设置有电机,所述电机输出端与第二转轴传动连接；通过抛光丸粒在搅动中能与大米均匀混合,使得米粒抛光接触面大且均匀,米粒能被均匀、高效地抛光,同时米粒受到的压力较小,使得米粒在抛光过程中能较大程度地减少碎米的产生。(The invention relates to the technical field of rice polishing, in particular to a polishing pill circulating type rice polishing machine which comprises a base, wherein a vertically arranged spiral elevator is arranged on the right side of the upper end of the base, a vertically arranged second rotating shaft is arranged in the spiral elevator, and a spiral auger is fixedly arranged on the periphery of the second rotating shaft; the upper end of the spiral elevator is provided with a top plate fixedly connected with an external rack, the upper end of the top plate is fixedly provided with a motor, and the output end of the motor is in transmission connection with a second rotating shaft; can mix with the rice homogeneous mixing through the polishing pill in stirring for the big and even of grain of rice polishing contact surface, the grain of rice can be polished evenly, high-efficiently, and the pressure that the grain of rice received is less simultaneously, makes the grain of rice can reduce the production of broken rice to a great extent in the polishing process.)

1. The polishing pill circulating type rice polishing machine is characterized by comprising a base (1), wherein a vertically arranged spiral elevator (6) is arranged on the right side of the upper end of the base (1), a vertically arranged second rotating shaft (62) is arranged in the spiral elevator (6), and a spiral auger (63) is fixedly arranged on the periphery of the second rotating shaft (62); a top plate (4) fixedly connected with an external rack is arranged at the upper end of the spiral elevator (6), a motor (5) is fixedly arranged at the upper end of the top plate (4), and the output end of the motor (5) is in transmission connection with a second rotating shaft (62); a separating cylinder (2) which is vertically arranged is fixedly arranged on a base (1) on the left side of the spiral elevator (6), a blanking channel (13) communicated with the separating cylinder is arranged in the base (1) at the lower end of the separating cylinder (2), and the blanking channel (13) is obliquely arranged and communicated with the lower part of the spiral elevator (6); the polishing box (3) is fixedly arranged at the upper end of the separating cylinder (2), a feeding hole (31) is formed in the upper end of the polishing box (3), a polishing cavity and a separating cavity (39) which are vertically separated are arranged in the polishing box (3), the polishing cavity is communicated with the separating cavity (39) through a discharging hole (38) formed in the middle of the lower end of the polishing cavity, and the separating cavity (39) is communicated with the inner cavity of the separating cylinder (2) below the separating cavity; the bottom in the polishing cavity is filled with a plurality of polishing pellets (37), a first rotating shaft (32) which is vertically arranged is arranged in the polishing cavity, a spiral disturbance plate (35) is arranged outside the first rotating shaft (32), and the upper end of the first rotating shaft (32) penetrates through the polishing box (3) to be rotatably connected with the top plate (4); a driven belt wheel (34) is sleeved outside a first rotating shaft (32) between the polishing box (3) and the top plate (4), a driving belt wheel (64) is sleeved on a second rotating shaft (62) between the spiral elevator (6) and the top plate (4), and the driving belt wheel (64) is in transmission connection with the driven belt wheel (34) through a belt (65); a communicating pipe (61) communicated with the upper part of the polishing box (3) is arranged at the upper part of the spiral elevator (6), and the communicating pipe (61) is gradually arranged from one side of the spiral elevator (6) to one side of the polishing box (3) in a descending manner; an inner cylinder (21) which is coaxially arranged is arranged in the separating cylinder (2), a space exists between the outer wall of the inner cylinder (21) and the inner wall of the separating cylinder (2), and the lower end of the inner cylinder (21) penetrates through the base (1) and extends to the lower end of the base (1); inner tube (21) upper end extends to in separating chamber (39) and is provided with toper separation head (22), constitute a discharge gap that supplies rice to pass through between the outer wall of toper separation head (22) and separating chamber (39) inner wall, be provided with the mounting hole of intercommunication discharge gap and inner tube (21) on the toper outer wall of toper separation head (22), be provided with second screen cloth (23) in the mounting hole.

2. A polished pellet circulating rice polisher according to claim 1 characterized in that the base (1) is provided with a cold air channel (11) which passes through the blanking channel (13) from front to back, the cold air channel (11) is provided with a first screen (12) near the blanking channel (13), and one side of the cold air channel (11) is provided with an air blower (14) blowing air towards the other side thereof.

3. A rice polisher with a circulation of polishing pellets as defined in claim 2 wherein the spiral agitating plate (35) has a plurality of through holes (36) formed therethrough.

4. A rice polisher with a circulating polishing pellet as claimed in claim 3 wherein the first shaft (32) has a through air channel (33) therein, the lower end of the first shaft (32) passes through the inner barrel (21) and extends to the lower end of the base (1) to communicate with the external air supply device, and the first shaft (32) extends to the upper end of the top plate (4).

5. A polished pellet circulation type rice polisher according to claim 4 characterized in that a throat portion (331) is provided in the air passage (33) above the spiral agitating plate (35), and a plurality of inclined holes (332) communicating the throat portion (331) with the inner cavity of the polishing case (3) are provided in the first rotating shaft (32); the communicating pipe (61) is arranged higher than the throat part (331) towards one side of the polishing box (3).

6. A polished pellet circulating rice polisher according to claim 5 characterized in that a guide plate (333) is hinged to the inner wall of the polishing box (3), one end of the guide plate (333) is located below the communicating pipe (61), the other end of the guide plate (333) extends obliquely downward to the throat (331), and a spring (334) is arranged between the lower end of the guide plate (333) and the inner wall of the polishing box (3).

Technical Field

The invention relates to the technical field of rice polishing, in particular to a polishing pill circulating type rice polishing machine.

Background

The wash-free rice is also called clean rice, is rice which does not need washing before cooking and meets the sanitary requirement, can simplify the cooking process and time, can retain nutrient components such as vitamins, mineral substances and the like in the rice, and avoids the loss of dry substances and nutrient components in the washing process of the rice.

The rice polishing is a key process in the processing process of washing-free rice, bran powder on the surface of rice grains can be removed by polishing, and proper polishing can gelatinize starch on the surface of the rice grains, so that the rice grains have certain brightness, the appearance effect is good, and the commodity value can be improved.

Chinese patent (application No. 2014105177366) discloses a polishing pellet circulation type rice polishing machine, comprising: the polishing device comprises a polishing barrel, a stirring and pushing blade, a polishing pill lifting channel, a rice inlet to be polished and polishing pills, wherein the stirring and pushing blade is arranged in the polishing barrel; the rice polishing device can well realize uniform polishing of rice, reduce the broken rice rate and facilitate replacement of polishing devices. Although the device has set up bran dust screen cloth and dust catcher takeover, but be difficult to guarantee the separation effect of bran powder, consequently the inside bran powder that still can mix of rice can make the frictional contact reduction of polishing equipment and the grain of rice among the polishing process, and then influences the polishing effect of rice.

The polishing pellet circulating rice polishing machine has the advantages that the polishing pellets can be uniformly mixed with rice during stirring, so that the polishing contact surface of rice grains is large and uniform, the rice grains can be uniformly and efficiently polished, and meanwhile, the pressure on the rice grains is small, so that the generation of broken rice can be greatly reduced during the polishing process of the rice grains.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problem that the friction contact between polishing equipment and rice grains is reduced due to bran powder doped in the rice during processing, so that the rice polishing effect is poor, the invention provides the polishing pellet circulating type rice polishing machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: a polishing pill circulating type rice polishing machine comprises a base, wherein a vertically arranged spiral elevator is arranged on the right side of the upper end of the base, a vertically arranged second rotating shaft is arranged in the spiral elevator, and a spiral auger is fixedly arranged on the periphery of the second rotating shaft; the upper end of the spiral elevator is provided with a top plate fixedly connected with an external rack, the upper end of the top plate is fixedly provided with a motor, and the output end of the motor is in transmission connection with a second rotating shaft; a separating cylinder which is vertically arranged is fixedly arranged on a base on the left side of the spiral elevator, a blanking channel communicated with the separating cylinder is arranged in the base at the lower end of the separating cylinder, and the blanking channel is obliquely arranged and communicated with the lower part of the spiral elevator; the polishing device is characterized in that a polishing box is fixedly arranged at the upper end of the separation barrel, a feed inlet is arranged at the upper end of the polishing box, a polishing cavity and a separation cavity which are vertically separated are arranged in the polishing box, the polishing cavity is communicated with the separation cavity through a discharge hole arranged in the middle of the lower end of the polishing cavity, and the separation cavity is communicated with an inner cavity of the separation barrel below the separation cavity; the bottom in the polishing cavity is filled with a plurality of polishing pellets, a first rotating shaft which is vertically arranged is arranged in the polishing cavity, a spiral disturbance plate is arranged outside the first rotating shaft, and the upper end of the first rotating shaft penetrates through the polishing box and is rotatably connected with the top plate; a driven belt wheel is sleeved outside a first rotating shaft between the polishing box and the top plate, a driving belt wheel is sleeved on a second rotating shaft between the spiral elevator and the top plate, and the driving belt wheel is in transmission connection with the driven belt wheel through a belt; the upper part of the spiral elevator is provided with a communicating pipe communicated with the upper part of the polishing box, and the communicating pipe is gradually arranged from one side of the spiral elevator to one side of the polishing box in a descending manner; an inner cylinder is coaxially arranged in the separating cylinder, a space is reserved between the outer wall of the inner cylinder and the inner wall of the separating cylinder, and the lower end of the inner cylinder penetrates through the base and extends to the lower end of the base; the inner tube upper end extends to the separation intracavity and is provided with the toper separation head, constitute a discharge gap that supplies the rice to pass through between the outer wall of toper separation head and the separation intracavity wall, be provided with the mounting hole that feeds through discharge gap and inner tube on the toper outer wall of toper separation head, be provided with the second screen cloth in the mounting hole.

When the rice polishing machine is used, rice is put into the polishing box through the feeding hole, the motor is started, the motor rotates to drive the second rotating shaft to rotate, the first rotating shaft can also rotate due to the arrangement of the driven belt wheel, the driving belt wheel and the belt, so that the spiral disturbance plate rotates, the rice to be polished can be mixed with polishing pills to be stirred and turned over in the falling process, and the polishing is realized through the friction of the polishing pills on the rice; because the polishing pellets can be uniformly mixed with the rice during stirring, the polishing contact surface of the rice grains is large and uniform, the rice grains can be uniformly and efficiently polished, meanwhile, the pressure on the rice grains is small, and the generation of broken rice can be greatly reduced during the polishing process of the rice grains; the polished rice enters the separation cavity through the discharge hole and falls downwards along the discharge gap, and due to the arrangement of the second screen, broken rice, bran powder and complete rice can be separated and discharged from the inner barrel, so that the probability that the polishing effect of the rice is influenced by the bran powder during the subsequent circular polishing of the rice is reduced, meanwhile, the number of broken rice contained in the finished wash-free rice is reduced, and the overall quality is improved; the separated rice enters the bottom of the spiral lifter through the separating cylinder and the blanking channel, and then falls into the polishing box again through the communicating pipe after being lifted by the spiral auger, so that the circular polishing of the rice is realized, and the polishing quality is ensured; and the rice can not receive the polishing when separating cylinder and screw elevator department, consequently can make the rice of this part have enough stroke and realize the cooling, avoid the rice high temperature to produce "the waist of popping" phenomenon, further reduced the production of garrulous rice.

Preferably, the base is provided with a cold air channel which penetrates through the blanking channel from front to back, a first screen is arranged at the position, close to the blanking channel, of the cold air channel, and an air blower blowing air towards the other side of the cold air channel is arranged in one side of the cold air channel. Through the setting of cold wind passageway, first screen cloth and air-blower, on the one hand, can make the bran powder in the blanking passageway and the more abundant of broken rice separation through the air-blast, guarantee the quality of rice, on the other hand also can carry out abundant cooling to the rice through the blanking passageway, has further reduced the production of broken rice, and in addition, the air-blast mobility of rice in also can improving the blanking passageway avoids the problem of rice jam in the blanking passageway.

Preferably, the spiral disturbance plate is provided with a plurality of through holes which are vertically penetrated. Through the arrangement of the through holes, on one hand, rice grains falling through the through holes can impact rice grains falling along the spiral disturbance plate, so that the separation of bran powder on the surfaces of the rice grains is accelerated, and the subsequent polishing effect is improved; on the other hand, the rice polishing machine is also beneficial to forming air flow in the polishing box and improving the cooling effect on rice.

Preferably, an air passing channel which is through up and down is arranged in the first rotating shaft, the lower end of the first rotating shaft penetrates through the inner barrel and extends to the lower end of the base to be communicated with external air supply equipment, and the first rotating shaft extends to the upper end of the top plate. Through the setting of the air passage in the first rotating shaft, the heat of the rice grains in the polishing box can be taken away through the air flow of the air passage during polishing, and the cooling effect is further improved.

Preferably, a throat part is arranged in the air passing channel above the spiral disturbance plate, and a plurality of inclined holes communicating the throat part with the inner cavity of the polishing box are formed in the first rotating shaft; the communicating pipe is arranged higher than the throat part towards one side of the polishing box. Through the arrangement of the throat part and the inclined holes, negative pressure can be generated at the throat part when high-speed airflow in the air passing channel passes through the throat part, so that bran powder floating on the upper part of the polishing box is sucked into the air passing channel through the inclined holes and then is discharged and collected through the air passing channel, the separation of the bran powder is realized, and the polishing quality is improved; meanwhile, the upper part of the polishing box is under negative pressure, so that airflow in the polishing box flows from bottom to top, and then impacts grains flowing downwards, separation of bran powder and grains is accelerated, cooling of the grains can be improved, and accordingly broken grains are reduced.

Preferably, the polishing box is hinged to the inner wall of the polishing box, one end of the guide plate is located below the communicating pipe, the other end of the guide plate extends obliquely and downwards to the throat, and a spring is arranged between the lower end of the guide plate and the inner wall of the polishing box. Through the arrangement of the guide plate, rice grains flowing down in the communicating pipe can be guided to the throat part, so that the probability that bran powder is sucked into the air passing channel is improved, the separation effect of the bran powder is improved, and the polishing effect of rice is improved; simultaneously, because the setting of spring can make the deflector produce the swing when the deflector flows down along the deflector in the grain of rice, and then throws the grain of rice of smuggleing secretly the bran powder, because the inertia variation in size of bran powder and grain of rice, consequently the separation effect of bran powder has been improved throwing the in-process that falls.

The invention has the following beneficial effects:

1. according to the polishing pellet circulating rice polishing machine, the polishing pellets can be uniformly mixed with rice during stirring, so that the polishing contact surface of rice grains is large and uniform, the rice grains can be uniformly and efficiently polished, and the pressure on the rice grains is small, so that the generation of broken rice can be greatly reduced during the polishing process of the rice grains.

2. According to the polishing pellet circulating rice polishing machine, through the arrangement of the through holes, on one hand, rice grains falling through the through holes can impact rice grains falling along the spiral disturbance plate, so that the separation of bran powder on the surfaces of the rice grains is accelerated, and the subsequent polishing effect is improved; on the other hand, the rice polishing machine is also beneficial to forming air flow in the polishing box and improving the cooling effect on rice.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

in the figure:

1. a base; 11. a cold air passage; 12. a first screen; 13. a blanking channel; 14. a blower; 2. a separation cylinder; 21. an inner barrel; 22. a conical separation head; 23. a second screen; 3. a polishing box; 31. a feed inlet; 32. a first rotating shaft; 33. a gas passage; 331. a throat; 332. an inclined hole; 333. a guide plate; 334. a spring; 34. a driven pulley; 35. a spiral disturbance plate; 36. a through hole; 37. polishing the pellets; 38. a discharge hole; 39. a separation chamber; 4. a top plate; 5. a motor; 6. a screw elevator; 61. a communicating pipe; 62. a second rotating shaft; 63. a spiral auger; 64. a drive pulley; 65. a belt.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, a circular rice polishing machine for polishing pellets 37 comprises a base 1, wherein a vertically arranged spiral elevator 6 is arranged on the right side of the upper end of the base 1, a vertically arranged second rotating shaft 62 is arranged in the spiral elevator 6, and a spiral packing auger 63 is fixedly arranged on the periphery of the second rotating shaft 62; the upper end of the spiral elevator 6 is provided with a top plate 4 fixedly connected with an external frame, the upper end of the top plate 4 is fixedly provided with a motor 5, and the output end of the motor 5 is in transmission connection with a second rotating shaft 62; a separating cylinder 2 which is vertically arranged is fixedly arranged on a base 1 on the left side of the spiral elevator 6, a blanking channel 13 communicated with the separating cylinder 2 is arranged in the base 1 at the lower end of the separating cylinder 2, and the blanking channel 13 is obliquely arranged and is communicated with the lower part of the spiral elevator 6; the upper end of the separation barrel 2 is fixedly provided with a polishing box 3, the upper end of the polishing box 3 is provided with a feed inlet 31, a polishing cavity and a separation cavity 39 which are vertically separated are arranged in the polishing box 3, the polishing cavity and the separation cavity 39 are communicated through a discharge hole 38 arranged in the middle of the lower end of the polishing cavity, and the separation cavity 39 is communicated with the inner cavity of the separation barrel 2 below the separation cavity; the bottom in the polishing cavity is filled with a plurality of polishing pellets 37, a first rotating shaft 32 which is vertically arranged is arranged in the polishing cavity, a spiral disturbance plate 35 is arranged outside the first rotating shaft 32, and the upper end of the first rotating shaft 32 penetrates through the polishing box 3 to be rotatably connected with the top plate 4; a driven belt wheel 34 is sleeved outside a first rotating shaft 32 between the polishing box 3 and the top plate 4, a driving belt wheel 64 is sleeved on a second rotating shaft 62 between the spiral elevator 6 and the top plate 4, and the driving belt wheel 64 is in transmission connection with the driven belt wheel 34 through a belt 65; a communicating pipe 61 communicated with the upper part of the polishing box 3 is arranged at the upper part of the spiral elevator 6, and the communicating pipe 61 is gradually arranged from one side of the spiral elevator 6 to one side of the polishing box 3 in a descending manner; an inner cylinder 21 which is coaxially arranged is arranged in the separating cylinder 2, a space exists between the outer wall of the inner cylinder 21 and the inner wall of the separating cylinder 2, and the lower end of the inner cylinder 21 penetrates through the base 1 and extends to the lower end of the base 1; inner tube 21 upper end extends to in the disengagement chamber 39 and is provided with toper separation head 22, constitute a discharge gap that supplies rice to pass through between the outer wall of toper separation head 22 and the disengagement chamber 39 inner wall, be provided with the mounting hole that communicates discharge gap and inner tube 21 on the toper outer wall of toper separation head 22, be provided with second screen cloth 23 in the mounting hole.

When the rice polishing device is used, rice is put into the polishing box 3 through the feeding hole 31, the motor 5 is started, the motor 5 rotates to drive the second rotating shaft 62 to rotate, the first rotating shaft 32 can also rotate due to the arrangement of the driven belt wheel 34, the driving belt wheel 64 and the belt 65, the spiral disturbance plate 35 further rotates, the rice to be polished can be mixed with the polishing pills 37 to be stirred and turned over in the falling process, and the polishing is realized through the friction of the polishing pills 37 on the rice; because the polishing pellets 37 can be uniformly mixed with the rice during stirring, the polishing contact surface of the rice grains is large and uniform, the rice grains can be uniformly and efficiently polished, meanwhile, the pressure on the rice grains is small, and the generation of broken rice can be greatly reduced during the polishing process of the rice grains; the polished rice enters the separation cavity 39 through the discharge hole 38 and falls downwards along the discharge gap, and due to the arrangement of the second screen 23, broken rice and bran powder can be separated from the complete rice and discharged from the inner cylinder 21, so that the probability of influencing the rice polishing effect due to the bran powder during the subsequent rice circular polishing is reduced, meanwhile, the number of the broken rice in the finished wash-free rice is reduced, and the overall quality is improved; the separated rice enters the bottom of the spiral elevator 6 through the separating cylinder 2 and the blanking channel 13, then falls into the polishing box 3 again through the communicating pipe 61 after being lifted by the spiral auger 63, so that the circular polishing of the rice is realized, and the polishing quality is ensured; and the rice can not receive the polishing when separating cylinder 2 and screw elevator 6 department, consequently can make the rice of this part have sufficient stroke and realize the cooling, avoid the rice high temperature to produce "the waist that explodes" phenomenon, further reduced the production of garrulous rice.

In an embodiment of the present invention, the base 1 is provided with a cold air channel 11 which penetrates the material dropping channel 13 from front to back, the cold air channel 11 is provided with a first screen 12 near the material dropping channel 13, and an air blower 14 which blows air towards the other side of the cold air channel 11 is arranged in one side of the cold air channel. Through the setting of cold wind passageway 11, first screen cloth 12 and air-blower 14, on the one hand, can make the bran powder in the blanking passageway 13 and the more abundant of broken rice separation through the air-blast, guarantee the quality of rice, on the other hand also can carry out abundant cooling to the rice through blanking passageway 13, has further reduced the production of broken rice, and in addition, the air-blast also can improve the mobility of rice in the blanking passageway 13, avoids the problem that the interior rice of blanking passageway 13 blockked up.

In an embodiment of the present invention, the spiral disturbance plate 35 is provided with a plurality of through holes 36 penetrating vertically. Through the arrangement of the through holes 36, on one hand, rice grains falling through the through holes 36 can impact rice grains falling along the spiral disturbance plate 35, so that the separation of bran powder on the surfaces of the rice grains is accelerated, and the subsequent polishing effect is improved; on the other hand, the formation of air flow in the polishing box 3 is facilitated, and the cooling effect on the rice is improved.

In one embodiment of the present invention, a through air passage 33 is formed in the first shaft 32, a lower end of the first shaft 32 penetrates the inner cylinder 21 and extends to a lower end of the base 1 to communicate with an external air supply device, and the first shaft 32 extends to an upper end of the top plate 4. Through the setting of the air passage 33 in the first rotating shaft 32, the heat of rice grains in the polishing box 3 can be taken away through the air flow of the air passage 33 during polishing, and the cooling effect is further improved.

In one embodiment of the present invention, a throat portion 331 is provided in the air passage 33 above the spiral disturbance plate 35, and a plurality of inclined holes 332 communicating the throat portion 331 and the inner cavity of the polishing chamber 3 are provided in the first shaft 32; the communication pipe 61 is disposed higher than the throat portion 331 toward the polishing tank 3 side. Through the arrangement of the throat 331 and the inclined holes 332, negative pressure can be generated at the throat 331 when high-speed airflow in the air passing channel 33 passes through the throat 331, so that bran powder floating on the upper part of the polishing box 3 is sucked into the air passing channel 33 through the inclined holes 332 and then is discharged and collected through the air passing channel 33, separation of the bran powder is realized, and polishing quality is improved; meanwhile, the upper part of the polishing box 3 is under negative pressure, so that the air flow in the polishing box 3 flows from bottom to top, and then impacts the grains flowing downwards, thereby accelerating the separation of the bran powder and the grains, improving the cooling of the grains and reducing the generation of broken grains.

In one embodiment of the present invention, a guide plate 333 is hinged to the inner wall of the polishing chamber 3, one end of the guide plate 333 is located below the connection pipe 61, the other end of the guide plate 333 extends obliquely downward to the throat 331, and a spring 334 is disposed between the lower end of the guide plate 333 and the inner wall of the polishing chamber 3. Through the arrangement of the guide plate 333, rice grains flowing down the communicating pipe 61 can be guided to the throat 331, so that the probability that bran powder is sucked into the air passage 33 is improved, the separation effect of the bran powder is improved, and the polishing effect of rice is improved; simultaneously, because the setting of spring 334, can make deflector 333 produce the swing when the grain of rice flows down along deflector 333, and then throw the grain of rice of smuggleing secretly the bran powder, because the inertia size of bran powder and grain of rice is different, consequently has improved the separation effect of bran powder at the in-process of throwing down.

When the rice polishing device is used, rice is put into the polishing box 3 through the feeding hole 31, the motor 5 is started, the motor 5 rotates to drive the second rotating shaft 62 to rotate, the first rotating shaft 32 can also rotate due to the arrangement of the driven belt wheel 34, the driving belt wheel 64 and the belt 65, the spiral disturbance plate 35 further rotates, the rice to be polished can be mixed with the polishing pills 37 to be stirred and turned over in the falling process, and the polishing is realized through the friction of the polishing pills 37 on the rice; because the polishing pellets 37 can be uniformly mixed with the rice during stirring, the polishing contact surface of the rice grains is large and uniform, the rice grains can be uniformly and efficiently polished, meanwhile, the pressure on the rice grains is small, and the generation of broken rice can be greatly reduced during the polishing process of the rice grains; the polished rice enters the separation cavity 39 through the discharge hole 38 and falls downwards along the discharge gap, and due to the arrangement of the second screen 23, broken rice and bran powder can be separated from the complete rice and discharged from the inner cylinder 21, so that the probability of influencing the rice polishing effect due to the bran powder during the subsequent rice circular polishing is reduced, meanwhile, the number of the broken rice in the finished wash-free rice is reduced, and the overall quality is improved; the separated rice enters the bottom of the spiral elevator 6 through the separating cylinder 2 and the blanking channel 13, then falls into the polishing box 3 again through the communicating pipe 61 after being lifted by the spiral auger 63, so that the circular polishing of the rice is realized, and the polishing quality is ensured; the rice is not polished when being placed in the separating cylinder 2 and the spiral elevator 6, so that the rice in the part has enough travel to realize cooling, the phenomenon of 'waist explosion' caused by overhigh temperature of the rice is avoided, and the generation of broken rice is further reduced; through the arrangement of the cold air channel 11, the first screen 12 and the air blower 14, on one hand, the bran powder and the broken rice in the blanking channel 13 can be more sufficiently separated through air blowing, the quality of the rice is ensured, on the other hand, the rice passing through the blanking channel 13 can be sufficiently cooled, the broken rice is further reduced, in addition, the flowability of the rice in the blanking channel 13 can be improved through air blowing, and the problem of rice blockage in the blanking channel 13 is avoided; through the arrangement of the through holes 36, on one hand, rice grains falling through the through holes 36 can impact rice grains falling along the spiral disturbance plate 35, so that the separation of bran powder on the surfaces of the rice grains is accelerated, and the subsequent polishing effect is improved; on the other hand, the formation of air flow in the polishing box 3 is facilitated, and the cooling effect on the rice is improved; through the arrangement of the throat 331 and the inclined holes 332, negative pressure can be generated at the throat 331 when high-speed airflow in the air passing channel 33 passes through the throat 331, so that bran powder floating on the upper part of the polishing box 3 is sucked into the air passing channel 33 through the inclined holes 332 and then is discharged and collected through the air passing channel 33, separation of the bran powder is realized, and polishing quality is improved; meanwhile, the upper part of the polishing box 3 is under negative pressure, so that the airflow in the polishing box 3 flows from bottom to top, and then impacts the rice grains flowing downwards, thereby accelerating the separation of the bran powder and the rice grains, improving the cooling of the rice grains and reducing the generation of broken rice; through the arrangement of the guide plate 333, rice grains flowing down the communicating pipe 61 can be guided to the throat 331, so that the probability that bran powder is sucked into the air passage 33 is improved, the separation effect of the bran powder is improved, and the polishing effect of rice is improved; simultaneously, because the setting of spring 334, can make deflector 333 produce the swing when the grain of rice flows down along deflector 333, and then throw the grain of rice of smuggleing secretly the bran powder, because the inertia size of bran powder and grain of rice is different, consequently has improved the separation effect of bran powder at the in-process of throwing down.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.