CN118357007A

CN118357007A - Rice surface polishing device for rice processing

Info

Publication number: CN118357007A
Application number: CN202410800306.9A
Authority: CN
Inventors: 刘建强; 余菊华; 余怿
Original assignee: Hunan Tianzhi Xiangmi Industry Co ltd
Current assignee: Hunan Tianzhi Xiangmi Industry Co ltd
Priority date: 2024-06-20
Filing date: 2024-06-20
Publication date: 2024-07-19
Anticipated expiration: 2044-06-20
Also published as: CN118357007B

Abstract

The application discloses a rice surface polishing device for rice processing, which comprises a main box body, wherein the front end of the main box body is connected with a feeding box, a bran collection box is arranged in the main box body, a bran sieving cylinder is arranged in the bran collection box, and a polishing roller is coaxially assembled in the bran sieving cylinder. According to the rice surface polishing device for rice processing, the scattering box is arranged between the bran sieving cylinder and the polishing roller, and the upper scattering groove and the lower scattering groove are used for transferring rice grains at the outer cavity and the inner cavity of the left cavity of the polishing cavity to the inner cavity and the outer cavity of the right cavity, so that the rice grains are transferred far and near in the radial line direction of the polishing roller, the rice grains are alternately close to the polishing roller, the condition that the rice grains are not transferred between the outer cavity and the inner cavity due to large quantity of the rice grains in the polishing cavity is prevented, the problem that the rice grains are continuously far away from or close to the polishing roller and the problem that the rice grains are unevenly polished is solved, and the effect of improving the polishing uniformity of the rice grains in the polishing cavity is realized.

Description

Rice surface polishing device for rice processing

Technical Field

The invention relates to the technical field of rice processing, in particular to a rice surface polishing device for rice processing.

Background

The polished rice flows down from the storage hopper and enters the polishing chamber under the action of the conveying auger, and meanwhile, the heated water (used when the room temperature is lower than 15 ℃) is fed into the auger and the air spraying pipeline through the rubber pipe and the nozzle by the temperature control water tank through the flowmeter, the water mist and the air spraying pipeline are mixed and then enter the polishing chamber, and the water mist is attached to the surface of rice grains, so that bran powder on the surface of the rice grains is condensed, and the surface of the rice grains is wet and softened. The rotary motion of the rollers in the polishing chamber enables the rice grains to continuously move in the polishing chamber, and in the motion process, relative motion and relative friction are generated among the rice grains, between the rice grains and the polishing rollers and between the rice grains and the rice screen. As the rice grain surface is moist and soft, the bran powder and acne on the rice grain surface can be removed by the friction, and the surface smoothness is improved, so that the rice grain is clean and bright, and the requirement of polishing the rice surface is met. Fine rice bran and paper scraps generated in the polishing process are sucked out by a bran suction fan through a screen.

The rice polishing machine mainly comprises a machine body, a feeding device, a polishing roller, a driving device, a discharging device and the like. The machine body is a basic framework of the rice polishing machine, and is formed by welding solid steel plates so as to ensure stable operation. The feeding device is a device for feeding untreated rice into the machine body. Typically, it consists of a hopper-shaped funnel and a conveyor belt, which automatically conveys the rice to the polishing roller. The polishing roller is a core component of the rice polishing machine and consists of a cylindrical roller. When the rice enters the polishing roller through the feeding device, the polishing roller rotates at a certain speed, so that the rice rubs against the surface of the polishing roller, and bran on the surface of the rice is removed. The driving device is a device for providing power to the polishing roller. Generally, it consists of an electric motor and a transmission system. The motor transmits power to the polishing roller through a transmission system to enable the polishing roller to rotate. The discharging device is a device for discharging polished rice from the machine body. Generally, it consists of a hopper-shaped hopper and a conveyor belt, which automatically conveys polished rice to a designated container or storage device. The working process of the rice polishing machine is as follows: first, untreated rice was put into a feeding device and fed into a polishing roll by a conveyor belt. Then, the driving device is turned on to start the rotation of the polishing roller. During the rotation, the rice rubs against the surface of the polishing roller and the bran is gradually removed. Finally, the polished rice is discharged through a discharging device, and the whole polishing process is completed.

The polishing machine in the prior art further comprises a water spraying device, the water spraying device is used for spraying water mist to rice, the water spraying device is generally installed in the polishing roller, a water injection pipe is installed in the feeding end of the polishing roller, an auxiliary water injection pipe is installed in the discharging chamber, and the water mist is sprayed outwards through the polishing roller. The water quantity in the middle of the polishing roller in the water-spraying mode is large, so that rice bran in the middle of the polishing roller is moist, a screen hole is easy to block, the water quantity at two ends is small, uneven rice water is caused, and the polishing quality of rice grains is affected. The water spraying device sprays water mist once before rice enters the polishing cavity, so that excessive water mist is generated on the front rice grains of the polishing roller, and almost no water mist is generated on the rear rice grains of the polishing roller, and the problem of uneven water of the rice grains is also caused.

Because of the obstruction of the rice layer close to the polishing roller, the rice far away from the polishing roller is difficult to water, and the problem of uneven water of the rice is aggravated.

In the prior art, the polishing effect of centripetal acceleration is an important condition for uniformly polishing rice grains when the rice is polished, namely, the polishing effect is generated on the rice grains by virtue of a certain centripetal acceleration of a polishing roller of a polishing machine. Experiments show that the polishing capability rises linearly with the increase of the circumferential linear speed of the polishing roller of the polishing machine. The closer the rice in the polishing cavity is to the polishing roller, the larger the centripetal force formed by the rotation of the polishing roller to the rice is, the higher the mobility of the rice is, the more friction is received, and the higher the polishing speed is; the smaller the rotation acting force of the polishing roller can be received by the rice far away from the polishing roller, the lower the mobility of the rice is, the less friction is received, so that the higher the polishing degree of the rice close to the polishing roller is in the radial direction of the polishing roller, the lower the polishing degree of the rice far away from the polishing roller is, and the uneven polishing of the rice is caused.

In addition, due to the influence of water mist, residual bran powder can be accumulated and adhered on the polishing roller, namely the so-called bran caking, not only the discharge of the polished bran powder is influenced, but also the heat dissipation in the polishing process is also influenced, broken rice is easily generated in the polishing process, and the polishing effect and the stability of operation are seriously influenced.

Disclosure of Invention

The application provides a rice surface polishing device for rice processing, which has the advantages of uniform rice polishing, uniform water consumption and controllable water consumption, and is used for scraping bran powder layers on the surface of a polishing roller, so as to solve the problem of uneven water consumption caused by spraying water mist from a main shaft by rice, and solve the problem of uneven polishing of the rice in a polishing cavity caused by inconsistent positions of the polishing roller and the problem of bran caking of the polishing roller.

In order to achieve the above purpose, the application adopts the following technical scheme: the utility model provides a rice surface polishing device for rice processing, includes the main tank body, the front end of main tank body is connected with the feeding case, the inside of main tank body is provided with album bran case, the internally mounted of album bran case has a sieve bran section of thick bamboo, the coaxial polishing roller that is equipped with of sieve bran section of thick bamboo, form the polishing chamber between sieve bran section of thick bamboo, the polishing roller, the front end of polishing roller is connected with into the rice auger, it is located the inside of feeding case to advance the rice auger, the periphery of polishing roller is provided with the bulk material case, the top surface of bulk material case is connected on a sieve bran section of thick bamboo to divide into right side chamber and left chamber with the polishing chamber as the benchmark, and the rice exchanges in controlling the intracavity through the bulk material case.

Further, the bulk bin includes unit bulk bin, the bulk bin is formed by the integral type combination of a plurality of unit bulk bin, unit bulk bin includes the box body, the middle part of box body both sides is equipped with the partial flitch, uses the arc extension line of partial flitch to separate polishing chamber into outer chamber and inner chamber as the benchmark, last scattered groove and lower scattered groove have been seted up to the inside of box body, go up the entry end of scattered groove and be located the top of right side partial flitch, the exit end of going up the scattered groove is located the below of left side partial flitch, the entry end of lower scattered groove is located the top of right side partial flitch, the exit end of lower scattered groove is located the below of left side partial flitch, the rice grain in the polishing chamber flows through last scattered groove, lower scattered groove is used for transferring the rice grain of polishing chamber's left outer chamber department to right inner chamber department, lower scattered groove is used for transferring the rice grain of polishing chamber's right inner chamber department to left outer chamber department.

Further, the number of the upper dispersion grooves is two, the upper dispersion grooves are respectively positioned at two sides of the lower dispersion groove, and the sum of the sectional areas of the two upper dispersion grooves is the same as the sectional area of the lower dispersion groove.

Further, the upper fog wind groove is formed in the groove wall of the upper dispersing groove, the lower fog wind groove is formed in the groove wall of the lower dispersing groove, the upper fog wind groove and the lower fog wind groove are identical in structure, the direction of the air outlet of the upper fog wind groove is consistent with the direction of the rice grains moving in the upper dispersing groove, the direction of the air outlet of the lower fog wind groove is consistent with the direction of the rice grains moving in the lower dispersing groove, a fog wind channel is formed in the box body, the upper fog wind groove, the lower fog wind groove and the fog wind channel are communicated, the fog wind channel is connected with a fog wind pipe, the fog wind pipe is connected with an atomizer, and the inlet end of the atomizer is connected with a water tank.

Further, the periphery cover of polishing roller is equipped with scrapes the ring, scrape the ring and include annular plate and oblique shovel limit, the annular plate is annular, and oblique shovel limit is connected in the both sides of annular plate, the outward flange of oblique shovel limit contacts with the outer wall of polishing roller.

Further, the spiral rail has been seted up on the outer wall of polishing roller, be connected with the rail groove guide pillar on the inner wall of pinion rack, rail groove guide pillar moves along the spiral rail, the spiral rail includes forward rail groove and reverse rail groove, forward rail groove, reverse rail groove are the heliciform and extend in the axial of polishing roller, initial constant head tank and terminal constant head tank have been seted up respectively to the front end and the rear end of polishing roller, initial constant head tank and terminal constant head tank's structure are the same, forward rail groove, reverse rail groove's front end rounding off is in initial constant head tank, forward rail groove, reverse rail groove's rear end rounding off is in terminal constant head tank, rail groove guide pillar follows initial constant head tank, forward rail groove, terminal constant head tank, reverse rail groove circulation slip, be provided with slide rail assembly on the outer wall of scraping the ring and the bottom surface of bulk cargo box, the scraping ring is through slide rail assembly along bulk cargo box axial displacement.

Further, the forward rail groove comprises a forward large-diameter groove and a forward small-diameter groove, the reverse rail groove comprises a reverse large-diameter groove and a reverse small-diameter groove, the diameters of the forward large-diameter groove and the reverse large-diameter groove are the same, the diameters of the forward small-diameter groove and the reverse small-diameter groove are the same, the forward large-diameter groove and the reverse small-diameter groove are close to the edge of the polishing roller, the forward small-diameter groove is connected to one end of the forward large-diameter groove, which is close to the center of the polishing roller, the reverse large-diameter groove is connected to one end of the reverse small-diameter groove, which is close to the center of the polishing roller, the middle parts of the initial positioning groove and the final positioning groove are cylindrical, the inner diameters of the initial positioning groove and the final positioning groove are the same as the diameters of the forward large-diameter groove and the reverse large-diameter groove, and the bottom walls of the initial positioning groove and the final positioning groove are respectively provided with an upward moving magnetic ring and a downward moving magnetic ring.

Further, the rail groove guide post comprises a central column, one end of the central column is connected to the inner wall of the annular plate, an upper small-diameter guide post and a lower small-diameter guide post are sequentially arranged on the central column, the diameters of the upper small-diameter guide post and the lower small-diameter guide post are the same, the diameters of the upper small-diameter guide post and the lower small-diameter guide post are larger than those of the central column, a large-diameter guide post is sleeved on the central column, the diameters of the large-diameter guide post are larger than those of the upper small-diameter guide post and the lower small-diameter guide post, annular openings are formed in the upper end and the lower end of the large-diameter guide post, the diameter of the annular openings is larger than those of the upper small-diameter guide post and the lower small-diameter guide post, the large-diameter guide post is alternately covered on the periphery of the upper small-diameter guide post and the lower small-diameter guide post, the diameters of the large-diameter guide post are matched with the outer diameters of the large-diameter guide post, the diameters of the large-diameter small-diameter guide post and the large-diameter-reverse small-diameter guide post are matched with the diameters of the upper small-diameter guide post, the large-diameter guide post is connected with the bottom end of the large-diameter guide post, the large-diameter guide post is connected with a positioning magnetic ring, the upper magnetic ring and the magnetic ring is mutually attractive magnetic ring moves between the positioning ring and the magnetic ring.

The invention has the following beneficial effects:

1. According to the rice surface polishing device for rice processing, the scattering box is arranged between the bran sieving cylinder and the polishing roller, and the upper scattering groove and the lower scattering groove are used for transferring rice grains at the outer cavity and the inner cavity of the left cavity of the polishing cavity to the inner cavity and the outer cavity of the right cavity, so that the rice grains are transferred far and near in the radial line direction of the polishing roller, the rice grains are alternately close to the polishing roller, the condition that the rice grains are not transferred between the outer cavity and the inner cavity due to large quantity of the rice grains in the polishing cavity is prevented, the problem that the rice grains are continuously far away from or close to the polishing roller and the problem that the rice grains are unevenly polished is solved, and the effect of improving the polishing uniformity of the rice grains in the polishing cavity is realized.

2. According to the rice surface polishing device for rice processing, the upper fog air groove and the lower fog air groove are formed in the upper dispersing groove and the lower dispersing groove, the water fog is conveyed into the fog air channel through the fog air pipe by utilizing the atomizer, and enters the upper fog air groove and the lower fog air groove along the fog air channel and is sprayed out from the air outlet, so that the water fog is adhered to the outer surfaces of rice grains in the upper dispersing groove and the lower dispersing groove, the function of adding the water fog to the rice grains is realized, the water pipe can be used for connecting each upper fog air groove and each lower fog air groove, the water fog quantity in the upper fog air groove and the lower fog air groove which enter different positions is controlled, the purpose of controlling the water fog quantity adhered to the rice grains is realized, the excessive or the insufficient water fog on the rice grains is avoided, the uniformity of the rice water is improved, and the purpose of improving the polishing quality of the rice grains is realized.

3. According to the rice surface polishing device for rice processing, provided by the application, the scraping ring is sleeved on the polishing roller, the scraping ring is driven to reciprocate, so that the inclined shovel edge can scrape the bran powder layer adhered on the surface of the polishing roller, the rice polishing effect is prevented from being influenced, in addition, the function of driving the scraping ring to reciprocate along the polishing roller by utilizing the continuous rotation of the polishing roller is realized through the matched guiding action of the guide post of the rail groove and the spiral rail, the additional equipment for driving the scraping ring to reciprocate is not required, and the aim of reducing energy consumption is achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective cross-sectional view of the present application;

FIG. 2 is a partial right side cross-sectional view of the present application;

FIG. 3 is a schematic perspective view of the present application;

FIG. 4 is a perspective view of the bulk bin of the present application;

FIG. 5 is a schematic diagram of a combination of the bulk bin of the present application;

FIG. 6 is a schematic perspective view of a bulk bin unit according to the application;

FIG. 7 is a front view of a unit bulk magazine according to the application;

FIG. 8 is a rear view of the unit bulk magazine of the present application;

FIG. 9 is a cross-sectional view of the upper dispersion tank of the unit dispersion tank of the present application;

FIG. 10 is a cross-sectional perspective view of the upper dispersion tank of the unit dispersion tank of the present application;

FIG. 11 is a cross-sectional view of a lower dispersion tank of the unit dispersion tank of the present application;

FIG. 12 is a cross-sectional perspective view of a lower dispersion tank of the unit dispersion tank of the present application;

Fig. 13 is a schematic perspective view of a polishing roll according to the present application;

fig. 14 is a front view of the polishing roll of the present application;

FIG. 15 is a cross-sectional view A-A of FIG. 14;

FIG. 16 is a B-B cross-sectional view of FIG. 14;

FIG. 17 is a schematic perspective view of a wiper ring according to the present application;

FIG. 18 is a cross-sectional view of a scraper ring of the present application;

FIG. 19 is a schematic view of the connection of the forward rail groove to the rail groove guide of the present application;

FIG. 20 is a schematic diagram of the connection of the end point positioning slot to the track guide of the present application;

FIG. 21 is a schematic view of the connection of the inverted rail and rail guide of the present application.

In the figure: 1. a main case; 2. a feed box; 3. a bran collection box; 301. bran discharging hopper; 302. a rice outlet hopper; 4. a bran sieving cylinder; 451. an outer cavity; 452. an inner cavity; 5. polishing rollers; 6. feeding rice auger; 7. a spiral track; 701. a forward rail groove; 711. a positive large-diameter groove; 712. a small diameter forward groove; 702. a reverse rail groove; 721. a reverse large-diameter groove; 722. a reverse small-diameter groove; 703. an initial positioning groove; 731. moving the magnetic ring upwards; 704. a terminal positioning groove; 741. moving down the magnetic ring; 8. a scraping ring; 801. a ring plate; 802. a sloping shovel edge; 803. a rail groove guide post; 831. a center column; 832. a small diameter guide post is arranged; 833. a lower small-diameter guide post; 834. a large-diameter guide post; 835. positioning a magnetic ring; 9. a bulk bin; 900. a unit bulk bin; 91. a case body; 92. a material dividing plate; 93. an upper dispersion tank; 94. a lower dispersion tank; 95. a mist spraying air duct; 96. a lower fog wind groove; 97. a mist wind channel; 10. a motor; 11. a fog wind pipe; 12. an atomizer; 13. a water tank; 14. a slide rail assembly.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Example 1

Referring to fig. 1, fig. 2 and fig. 3, a rice surface polishing device for rice processing comprises a main box body 1, wherein the front end of the main box body 1 is connected with a feeding box 2, a bran collecting box 3 is arranged in the main box body 1, a bran collecting cylinder 4 is arranged in the bran collecting box 3, a polishing roller 5 is coaxially arranged in the middle of the bran collecting cylinder 4, the front end of the polishing roller 5 is connected with a rice feeding auger 6, the rice feeding auger 6 is positioned in the feeding box 2, and the feeding box 2 is communicated with the inner cavity of the bran collecting cylinder 4, so that the rice feeding auger 6 rotates to push rice in the feeding box 2 into the bran collecting cylinder 4. Taking fig. 1 as an example, the left end of the device is the front end, and the right end of the device is the rear end.

Referring to fig. 1,2 and 3, when the polishing roller 5 rotates, rice bran enters the bran collection box 3 through the sieve holes on the sieving bran cylinder 4, the bottom of the bran collection box 3 is connected with a bran outlet hopper 301, and the rice bran entering the bran collection box 3 is collected and discharged through the bran outlet hopper 301. The rear end of the bran collection box 3 is connected with a rice outlet hopper 302, rice grains move from the front end to the rear end under the action of a rice inlet auger 6, and the polishing effect is achieved due to the friction action of the rice grains and the rice grains, the rice grains and a polishing roller 5 and the rice grains and a bran sieving barrel 4 in the moving process, and finally the rice grains and the bran sieving barrel are conveyed out after entering the rice outlet hopper 302.

Referring to fig. 1,2 and 3, a bulk bin 9 is arranged above the polishing roller 5, the top end of the bulk bin 9 is connected with the bran tube 4, the bottom end of the bulk bin 9 is close to the polishing roller 5, the gap between the bottom surface of the bulk bin 9 and the surface of the polishing roller 5 is smaller than the diameter of rice grains, the rice grains are prevented from entering the gaps between the polishing roller 5 and the bulk bin 9, and the rice grains are guaranteed to flow through the bulk bin 9. The relative position of the bulk bin 9 and the polishing roller 5 can be adjusted, for example, the bulk bin 9 is disposed in the middle of the left or right side of the polishing roller 5.

Referring to fig. 1,2 and 3, the top of the feeding box 2 is provided with a rice feeding hopper, the rice feeding hopper is communicated with the inner cavity of the feeding box 2, the front end of the rice feeding auger 6 is connected with a first belt pulley, the first belt pulley is positioned on the outer side of the feeding box 2, a motor 10 and a speed regulation box are mounted on a bottom bracket of the feeding box 2, a driving shaft of the motor 10 is connected with an input shaft of the speed regulation box, an output shaft of the speed regulation box is connected with a second belt pulley, and the first belt pulley and the second belt pulley are in transmission connection through a belt. The rear end of the polishing roller 5 is rotatably connected to the main casing 1 through a bearing. The motor 10 drives the rice feeding auger 6 and the polishing roller 5 to rotate, and when the rice feeding auger 6 rotates, rice is conveyed into the bran tube 4 from the feeding box 2 and pushed to the rear end of the bran tube 4.

In the application, the rotation direction of the rice feeding auger 6 and the polishing roller 5 is anticlockwise seen from the front end to the rear end, and a polishing cavity is formed between the bran cylinder 4 and the polishing roller 5.

Referring to fig. 1 and 2, the polishing cavity is divided into an outer cavity 451 and an inner cavity 452 by taking half of the height of the bulk bin 9 as a separation line, the bulk bin 9 as a separation point, the right side of the bulk bin 9 as a polishing cavity right cavity, and the left side of the bulk bin 9 as a polishing cavity left cavity. The outer cavity 451 of the right cavity is abbreviated as right outer cavity, the inner cavity of the right cavity is abbreviated as right inner cavity, the outer cavity 451 of the left cavity is abbreviated as left outer cavity, and the inner cavity of the left cavity is abbreviated as left inner cavity. If the bulk bin 9 is not arranged, the rice in the right outer cavity enters the left outer cavity when passing through the top end of the polishing cavity, and the rice in the right inner cavity enters the left inner cavity. According to the application, after passing through the bulk bin 9, the rice in the right outer cavity enters the left inner cavity, the rice in the right inner cavity enters the left outer cavity, so that the rice in the inner cavity and the rice in the outer cavity are exchanged, the rice is promoted to be transferred in the polishing cavity in the radial direction of the polishing roller 5 through the bulk bin 9, a part of the rice is prevented from continuously approaching the polishing roller 5 or being far away from the polishing roller 5, the condition of over-polishing or low polishing degree of the rice is avoided, the polishing dispersion of the rice is reduced, and the polishing uniformity of the rice is improved.

Referring to fig. 4, 5, 6, 7, 8, 9, 10, 11 and 12, the bulk bin 9 includes a unit bulk bin 900, and fig. 5 is a front view of a combination of a plurality of unit bulk bins 900 shown in fig. 7, so that the bulk bin 9 is integrally combined from a plurality of unit bulk bins 900. Referring to fig. 6, 7 and 8, the unit bulk bin 900 includes a bin body 91, a dividing plate 92 is provided at the middle of both sides of the bin body 91, the dividing plate 92 is used for layering rice grains, and an arc extension line of the dividing plate 92 can be regarded as a separation line of the outer cavity 451 and the inner cavity 452. Referring to fig. 6, 9 and 10, an upper dispersion groove 93 is formed in the box 91, an inlet end of the upper dispersion groove 93 faces a right cavity of the polishing cavity, an outlet end of the upper dispersion groove 93 faces a left cavity of the polishing cavity, an inlet end of the upper dispersion groove 93 is located above the distributing plate 92, an outlet end of the upper dispersion groove 93 is located below the distributing plate 92, and the upper dispersion groove 93 is used for conveying rice grains at a right outer cavity to a left inner cavity.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, and fig. 12, a lower dispersion groove 94 is further formed in the box 91, an inlet end of the lower dispersion groove 94 faces a right cavity of the polishing cavity, an outlet end of the lower dispersion groove 94 faces a left cavity of the polishing cavity, an inlet end of the lower dispersion groove 94 is located below the distributing plate 92, an outlet end of the lower dispersion groove 94 is located above the distributing plate 92, and the lower dispersion groove 94 is used for conveying rice grains at the right cavity to the left outer cavity.

Referring to fig. 4, 5, 6, 7, 8, 9, 10, 11 and 12, the number of the upper dispersion grooves 93 is two and are located at both sides of the lower dispersion groove 94, and the sum of the sectional areas of the two upper dispersion grooves 93 is the same as the sectional area of the lower dispersion groove 94. The cross sections of the upper and lower dispersion grooves 93, 94 are circular or square.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, the walls of the two upper dispersion grooves 93 are provided with surrounding upper mist air grooves 95, that is, the upper mist air grooves 95 surround the upper, lower, left and right walls of the upper dispersion grooves 93. Referring to fig. 11 and 12, a surrounding lower fog wind groove 96 is formed on the wall of the lower dispersion groove 94, the upper fog wind groove 95 and the lower fog wind groove 96 have the same structure, and the sections of the upper fog wind groove 95 and the lower fog wind groove 96 are wing-shaped, i.e. similar to the shape of a wing.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, it can be seen from the schematic cross-sectional views of the upper fog wind groove 95 and the lower fog wind groove 96 that the upper fog wind groove 95 and the lower fog wind groove 96 form an air outlet frame, and the cavity of the air outlet frame is thinner towards the forward direction of the air supply, is completely closed, is thicker in the opposite direction, and leaves a narrower gap, which is the air outlet. The air flow spreads and fills the cavity of the air outlet frame, and the air flow is accumulated to a certain degree to exceed the normal air pressure outside the cavity, so that wind is formed. The cavity with a narrow end and a wide and thick end can force the internal air flow to move towards the cavity with a wider end, the air which is continuously extruded with each other can only leak from the fine slit, after the structure continuously runs for a period of time, the air supply pressure can be gradually enhanced, the air flow of the air outlet gap is faster, a negative pressure area is formed at the rear end of the air outlet, and the upper fog wind groove 95 in the prior art is used for applying a bladeless fan.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, the upper fog wind groove 95 surrounding the groove wall forms a circular ring-shaped wind outlet frame, the wind outlet of the upper fog wind groove 95 is communicated with the inner cavity of the upper dispersing groove 93, and the wind outlet of the upper fog wind groove 95 faces to the outlet end of the upper dispersing groove 93. The box body 91 is provided with a fog air channel 97, the fog air channel 97 is communicated with the upper fog air groove 95, the fog air channel 97 is connected with a fog air pipe 11, the fog air pipe 11 is connected with an atomizer 12, the inlet end of the atomizer 12 is connected with a water tank 13, and the atomizer 12 and the water tank 13 are arranged on the top surface of the main box body 1. The atomizer 12 extracts clear water in the water tank 13, and vaporizes the clear water into mist, and the mist is conveyed into the mist air channel 97 through the mist air pipe 11, and the mist in the mist air channel 97 enters the upper mist air groove 95 and is sprayed out from an air outlet of the upper mist air groove 95. Because the air outlet of the upper fog air groove 95 is communicated with the inner cavity of the upper dispersion groove 93, when the rice grains pass through the upper dispersion groove 93, fog sprayed by the upper fog air groove 95 can be adhered to the rice grains, so that the function of spraying the rice grains is realized.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, and fig. 12, since the upper dispersion grooves 93 are distributed along the axis of the polishing roller 5, mist can be additionally sprayed during the process of moving the rice grains from the front end to the rear end of the polishing roller 5. Compared with the mode of spraying water mist once before the rice grains enter the polishing cavity in the prior art, the application can supplement the water mist in the whole moving process of the rice grains, avoids the situation that the rice grains at the front end of the polishing roller 5 are moist due to the fact that too much water mist is sprayed once before the rice grains enter the polishing cavity, and prevents uneven rice polishing caused by too much water mist at the front end and too little water mist at the rear end of the polishing roller 5. In addition, to the mode that adopts in the prior art to set up the orifice on polishing roller 5 to outwards spray water smoke from the orifice, this kind of mode has the problem because the hindrance of rice grain, water smoke is difficult to be stained with on the rice grain far away from polishing roller 5 through the rice grain clearance, leads to the inhomogeneous problem of water smoke that sprays on the rice grain, then causes the rice grain to polish inhomogeneous. According to the application, the upper fog wind grooves 95 are formed around the groove walls around the upper dispersing grooves 93, so that water fog can be sprayed from the periphery of rice when the rice passes through the upper dispersing grooves 93, and the thickness of the rice layer in the upper dispersing grooves 93 is reduced because the rice which enters the upper dispersing grooves 93 and is only one half of the chamber of the polishing cavity, and meanwhile, the water fog is sprayed from the periphery of the rice layer, so that the probability of contact between the water fog and rice grains is greatly improved, and the rice is uniformly adhered with the water fog.

From fig. 9 and fig. 10, the direction of the air outlet of the upper fog wind groove 95 is consistent with the moving direction of the rice grains in the upper dispersing groove 93, and when the fog is sprayed out from the air outlet of the upper fog wind groove 95, negative pressure is formed at one side of the inlet end of the upper dispersing groove 93, the air flow outside the inlet end is pressed into the upper dispersing groove 93 to form the air flow flowing from the inlet end to the outlet end of the upper dispersing groove 93, the air flow forms the effect of sucking the rice grains, the smoothness of the movement of the rice grains in the upper dispersing groove 93 is increased, and the transfer of the rice grains from the right outer cavity to the left inner cavity through the upper dispersing groove 93 is facilitated.

Referring to fig. 11 and 12, a lower mist wind groove 96 is provided in the lower dispersion groove 94, and the structure, principle and function of the lower mist wind groove 96 are the same as those of the upper mist wind groove 95. And the air outlet of the lower fog air chute 96 is directed toward the outlet end of the lower dispersion chute 94 to create a suction effect on the movement of the rice grains from the inlet end to the outlet end of the lower dispersion chute 94, causing the transfer of the rice grains from the right inner chamber to the left outer chamber through the lower dispersion chute 94.

Referring to fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, in the present application, the bulk bin 9 is formed by integrally combining a plurality of unit bulk bins 900, and meanwhile, a plurality of unit cavities formed by an upper dispersing groove 93, a lower dispersing groove 94, an upper mist air groove 95, a lower mist air groove 96 and a mist air channel 97 are formed on the bulk bin 9, and two lower mist air grooves 96 of the same unit bulk bin 900 are mutually communicated and then are communicated with the mist air channel 97. The communication modes of the upper and lower dispersion grooves 93, 94 of the adjacent unit dispersion tanks 900 are selected as follows, and the communication of the upper dispersion grooves 93 is exemplified as follows: the upper dispersion grooves 93 of the adjacent unit dispersion boxes 900 may be mutually communicated and then uniformly communicated with the mist air channel 97, or the upper dispersion groove 93 of each unit dispersion box 900 may be independently communicated with the mist air channel 97, or the upper dispersion grooves 93 of two or more unit dispersion boxes 900 may be mutually communicated as a module, and then the module is uniformly communicated with the mist air channel 97. The selection of the communication modes between the upper dispersion grooves 93 and the mist air channels 97 is mainly related to whether the rice can be uniformly adhered with water mist, and when each lower mist air groove 96 is independently communicated with the mist air channels 97, the air quantity of each lower mist air groove 96 is independently adjusted, so that the water mist adhesion quantity of rice grains at different positions is controlled; adjacent lower fog wind grooves 96 are communicated with each other and are communicated with the fog wind channels 97 uniformly, so that the manufacturing difficulty can be reduced; the modularized communication mode can give consideration to the advantages of uniform adhesion of water mist to rice grains and reduction of manufacturing difficulty, and the specific number of the upper dispersion grooves 93 forming the module can be set according to actual needs.

The working method of the embodiment is as follows:

Starting a motor 10, enabling a rice feeding auger 6 and a polishing roller 5 to rotate anticlockwise, enabling rice grains to enter a feeding box 2 from a rice feeding hopper, enabling the feeding box 2 to be communicated with a bran sieving cylinder 4, enabling rice to enter the bran sieving cylinder 4 under the conveying of the rice feeding auger 6, and enabling the rice grains to be polished through collision and friction in the process of moving along the axis of the polishing roller 5; in the bran cylinder 4, rice grains move anticlockwise along with the polishing roller 5, and when passing through the bulk bin 9, the rice grains at the right outer cavity of the polishing cavity enter the left inner cavity of the polishing cavity through the upper scattering groove 93; the rice grains at the right inner cavity of the polishing cavity enter the left outer cavity of the polishing cavity through the lower dispersion groove 94; thereby realizing the exchange of rice grains at the outer cavity 451 and the inner cavity 452 of the polishing cavity; meanwhile, mist is conveyed into the upper mist air groove 95 and the lower mist air groove 96 through the mist air channel 97, and is uniformly adhered to rice grains, so that the function of spraying the water mist to the rice grains is realized; and the flow of the mist forms an air flow to suck the rice grains, so that the smoothness of movement of the rice grains in the upper dispersing groove 93 and the lower dispersing groove 94 is improved.

Example two

Referring to fig. 1, fig. 2, fig. 13, fig. 14, fig. 17 and fig. 18, compared with the first embodiment, the polishing roller 5 of the present embodiment is provided with a scraping ring 8 around its outer circumference, and the scraping ring 8 is used for removing a bran powder layer formed by condensing bran powder on the surface of the polishing roller 5. Referring to fig. 17 and 18, the scraping ring 8 includes a ring plate 801 and inclined shovel edges 802, the ring plate 801 is annular, the inclined shovel edges 802 are connected to two sides of the ring plate 801, the cross section of each inclined shovel edge 802 is triangular, and an included angle formed by the inclined shovel edges 802 and the contact surface of the polishing roller 5 is an obtuse angle, so that when the scraping ring 8 reciprocates along the polishing roller 5, bran powder layers on the outer wall of the polishing roller 5 can be alternately shoveled by the two inclined shovel edges 802. The scraping ring 8 is driven to move back and forth along the surface of the polishing roller 5 by acting force, and the bran powder layer on the polishing roller 5 is scraped off by the inclined scraping edge 802. The driving force can be in various forms such as a combination of screw and screw pipes, a hydraulic push rod, a combination of rack and pinion and the like.

Example III

Referring to fig. 1, fig. 2, fig. 13, fig. 14, fig. 15, fig. 16, fig. 17, fig. 18, fig. 19, fig. 20, and fig. 21, compared with the embodiment, the embodiment has a spiral track 7 on the outer wall of the polishing roller 5, a track groove guide post 803 is connected to the inner wall of the annular plate 801, the track groove guide post 803 moves along the spiral track 7, and the scraping ring 8 moves reciprocally in the axial direction of the polishing roller 5 in cooperation with the rotation of the polishing roller 5.

Referring to fig. 13, 14, 15, 16, 17, 18, 19, 20, and 21, the spiral track 7 includes a forward track groove 701 and a reverse track groove 702, an initial positioning groove 703 is formed at the front end of the polishing roller 5, a final positioning groove 704 is formed at the rear end of the polishing roller 5, the front ends of the forward track groove 701 and the reverse track groove 702 meet at the initial positioning groove 703, and the rear ends of the forward track groove 701 and the reverse track groove 702 meet at the final positioning groove 704. The bottom of the initial positioning groove 703 is provided with an upward moving magnetic ring 731, and the bottom of the final positioning groove 704 is provided with a downward moving magnetic ring 741. The initial positioning groove 703 and the final positioning groove 704 have the same structure, i.e., the same shape and size. The connection of the forward rail groove 701, the initial positioning groove 703 and the reverse rail groove 702 is smooth, and the connection of the forward rail groove 701, the final positioning groove 704 and the reverse rail groove 702 is smooth in the same manner.

Referring to fig. 13, 14, 15, 16, 17, 18, 19, 20, and 21, the forward and reverse rail grooves 701 and 702 extend spirally in the axial direction of the polishing roller 5, and the cross-sectional shapes of the forward and reverse rail grooves 701 and 702 are as shown in fig. 16, the forward rail groove 701 includes a forward large-diameter groove 711 and a forward small-diameter groove 712, the reverse rail groove 702 includes a reverse large-diameter groove 721 and a reverse small-diameter groove 722, the diameters of the forward and reverse large-diameter grooves 711 and 721 are the same, and the diameters of the forward and reverse small-diameter grooves 712 and 722 are the same. In the forward rail groove 701, a forward large-diameter groove 711 is close to the edge of the polishing roller 5, and a forward small-diameter groove 712 is connected to one end of the forward large-diameter groove 711 close to the center of the polishing roller 5; in the reverse rail groove 702, a reverse small diameter groove 722 is near the edge of the polishing roller 5, and a reverse large diameter groove 721 is connected to one end of the reverse small diameter groove 722 near the center of the polishing roller 5.

Referring to fig. 17, fig. 18, fig. 19, fig. 20 and fig. 21, the rail groove guide post 803 includes a central post 831, referring to fig. 18, one end of the central post 831 is connected to the inner wall of the annular plate 801, an upper small diameter guide post 832 and a lower small diameter guide post 833 are sequentially provided on the central post 831, the diameters of the upper small diameter guide post 832 and the lower small diameter guide post 833 are the same, the diameters of the upper small diameter guide post 832 and the lower small diameter guide post 833 are larger than the diameter of the central post 831, a large diameter guide post 834 is sleeved on the central post 831, the diameter of the large diameter guide post 834 is larger than the diameters of the upper small diameter guide post 832 and the lower small diameter guide post 833, annular openings are provided at the upper end and the lower end of the large diameter guide post 834, the diameter of each annular opening is slightly larger than the diameters of the upper small diameter guide post 832 and the lower small diameter guide post 833, and the large diameter guide post 834 alternately cover the peripheries of the upper small diameter guide post 832 and the lower small diameter guide post 833. The bottom of the large diameter guide post 834 is connected with a positioning magnetic ring 835. An upward moving magnetic ring 731 is arranged on the bottom wall of the initial positioning groove 703, a downward moving magnetic ring 741 is arranged on the bottom wall of the final positioning groove 704, the positioning magnetic ring 835 and the upward moving magnetic ring 731 repel each other, and the positioning magnetic ring 835 and the downward moving magnetic ring 741 attract each other.

Referring to fig. 17, 18, 19, 20 and 21, the diameters of the forward large-diameter groove 711 and the reverse large-diameter groove 721 are matched with the outer diameter of the large-diameter guide post 834, and the diameters of the forward large-diameter groove 711 and the reverse large-diameter groove 721 are generally set to be slightly larger than the outer diameter of the large-diameter guide post 834 during manufacturing, but the end opening diameters of the forward large-diameter groove 711 and the reverse large-diameter groove 721 at the end are smaller than the outer diameter of the large-diameter guide post 834, so that the large-diameter guide post 834 cannot move up and down in the forward large-diameter groove 711 and the reverse large-diameter groove 721. Similarly, the diameters of the forward small diameter groove 712 and the reverse small diameter groove 722 are matched with the diameters of the upper small diameter guide post 832 and the lower small diameter guide post 833, the lower small diameter guide post 833 does not move up and down when moving in the forward small diameter groove 712, and the upper small diameter guide post 832 does not move up and down in the reverse small diameter groove 722. Referring to fig. 15 and 20, the inner diameters of the initial positioning groove 703 and the final positioning groove 704 are the same as the diameters of the forward large-diameter groove 711 and the reverse large-diameter groove 721, the middle parts of the initial positioning groove 703 and the final positioning groove 704 are cylindrical, and the opening diameters of the end parts of the initial positioning groove 703 and the final positioning groove 704 are smaller than the outer diameter of the upper small-diameter guide post 832, so that the upper small-diameter guide post 832 is prevented from moving upwards into the initial positioning groove 703 or the final positioning groove 704.

Referring to fig. 19, a schematic view of the state of the rail groove guide 803 moving in the forward rail groove 701 is shown, where the large-diameter guide 834 covers the outer periphery of the upper small-diameter guide 832, and the large-diameter guide 834 is located in the forward large-diameter groove 711, and the upper small-diameter guide 832 is located in the forward small-diameter groove 712. Referring to fig. 20, when the rail groove guide post 803 moves into the final positioning groove 704 along the forward rail groove 701, the downward moving magnetic ring 741 attracts the positioning magnetic ring 835, so that the large-diameter guide post 834 moves downward to the bottom end of the final positioning groove 704 and covers the periphery of the lower small-diameter guide post 833; referring to fig. 21, the rail groove guide 803 enters the reverse rail groove 702 from the end positioning groove 704, and the large diameter guide 834 enters the reverse large diameter groove 721, and the upper small diameter guide 832 enters the reverse small diameter groove 722. When the rail groove guide post 803 moves from the reverse rail groove 702 to the initial positioning groove 703, referring to fig. 20, the initial positioning groove 703 and the final positioning groove 704 have the same shape and structure, but the upward moving magnetic ring 731 has a repulsive action on the positioning magnetic ring 835, so that the large-diameter guide post 834 moves upward to cover the periphery of the upper small-diameter guide post 832 under the repulsive force of the upward moving magnetic ring 731 on the positioning magnetic ring 835, and then the rail groove guide post 803 enters the forward rail groove 701. Thus, the rail groove guide post 803 moves along the initial positioning groove 703, the forward rail groove 701, the final positioning groove 704 and the reverse rail groove 702 in a circulating manner. At the intersection of the reverse rail groove 702 and the forward rail groove 701, since the combination sequence of the forward large-diameter groove 711 and the forward small-diameter groove 712 of the forward rail groove 701 is arranged in the outer and inner directions with respect to the outer wall of the polishing roller 5, and the combination sequence of the reverse large-diameter groove 721 and the reverse small-diameter groove 722 of the reverse rail groove 702 is arranged in the inner and outer directions with respect to the outer wall of the polishing roller 5, the diameters of the two large-diameter grooves and the two small-diameter grooves are different, the rail groove guide post 803 does not enter the reverse rail groove 702 when moving along the forward rail groove 701, and conversely, the rail groove guide post 803 does not enter the forward rail groove 701 when moving along the reverse rail groove 702. And the opening diameters of the ends of the forward large-diameter groove 711 and the reverse small-diameter groove 722 are smaller than the outer diameter of the large-diameter guide post 834, so that the large-diameter guide post 834 cannot drop downwards at the intersection of the forward rail groove 701 and the reverse rail groove 702, and the rail groove guide post 803 can move along the forward rail groove 701 or the reverse rail groove 702 in a unidirectional circulating manner.

Referring to fig. 2,6, 9, 13, 14 and 17, a slide rail assembly 14 is disposed on the outer wall of the scraper ring 8 and the bottom surface of the bulk bin 9, the slide rail assembly 14 is used for ensuring that the scraper ring 8 moves along the axial direction of the bulk bin 9, the slide rail assembly 14 can adopt a T-shaped guide rail and a T-shaped guide bar, the T-shaped guide bar is connected to the outer wall of the scraper ring 8, the T-shaped guide rail is disposed on the bottom surface of the bulk bin 9, and the T-shaped guide bar slides along the T-shaped guide rail, so that the scraper ring 8 can move along the axial direction of the bulk bin 9 but cannot rotate along the circumferential direction of the polishing roller 5. Referring to fig. 13 and 14, if the rail groove guide 803 is located in the initial positioning groove 703, since the connection of the forward rail groove 701, the initial positioning groove 703 and the reverse rail groove 702 is smooth, and the connection of the forward rail groove 701, the final positioning groove 704 and the reverse rail groove 702 is also smooth, when the polishing roller 5 rotates anticlockwise, the polishing roller 5 is extruded by the inner wall of the initial positioning groove 703, the rail groove guide 803 moves into the reverse rail groove 702, and along with the continuous rotation of the polishing roller 5, the rail groove guide 803 is extruded by the inner wall of the reverse rail groove 702, and the limit effect of the slide rail assembly 14 is achieved, the rail groove guide 803 drives the scraper ring 8 to move axially along the polishing roller 5, so that the inclined scraper edge 802 scrapes the surface of the polishing roller 5, and bran powder on the surface of the polishing roller 5 is removed. Similarly, when the rail groove guide post 803 moves into the final positioning groove 704, the large-diameter guide post 834 moves downwards to cover the periphery of the lower small-diameter guide post 833, and along with the rotation of the polishing roller 5, the rail groove guide post 803 moves into the reverse rail groove 702 and then moves into the initial positioning groove 703, so that the scraping ring 8 moves back and forth along the axial direction of the polishing roller 5, and the function of back and forth scraping the surface of the polishing roller 5 is achieved.

The spiral rail 7 is adopted to drive the scraping ring 8 to move, so that the effect of saving installation of an additional driving device can be achieved, the turbulence effect on rice can be achieved by utilizing the channel of the spiral rail 7, the full contact between the rice and the rice, the polishing roller 5 and the bran barrel 4 is facilitated, and the polishing efficiency ring of the rice is ensured.

In addition, considering that the structures of the forward rail groove 701, the reverse rail groove 702, the initial positioning groove 703 and the final positioning groove 704 are similar to holes in this embodiment, there is a risk of blocking rice grains, so that rice grain blocking can be reduced by increasing the aperture during manufacturing, for example: the pore diameter is greater than twice the diameter of the rice grains.

Claims

1. The utility model provides a rice surface polishing device for rice processing, its characterized in that includes main box (1), the front end of main box (1) is connected with feeding case (2), the inside of main box (1) is provided with collection bran case (3), the internally mounted of collection bran case (3) has a screen bran section of thick bamboo (4), screen bran section of thick bamboo (4) coaxial assembly has polishing roller (5), form the polishing chamber between screen bran section of thick bamboo (4) and polishing roller (5), the front end of polishing roller (5) is connected with into rice auger (6), into rice auger (6) are located feeding case (2) inside, the periphery of polishing roller (5) is provided with bulk bin (9), the top surface of bulk bin (9) is connected on screen bran section of thick bamboo (4), divides into right side chamber and left chamber with bulk bin (9) as benchmark, and rice exchanges in controlling the intracavity through bulk bin (9);

Bulk cargo case (9) are including unit bulk cargo box (900), bulk cargo case (9) are formed by the integral type combination of a plurality of unit bulk cargo box (900), unit bulk cargo box (900) are including box body (91), the middle part of box body (91) both sides is equipped with and divides flitch (92), with the arc extension line of minute flitch (92) as benchmark with polishing chamber separation into outer chamber (451) and inner chamber (452), last dispersion tank (93) and lower dispersion tank (94) have been seted up to the inside of box body (91), the entry end of going up dispersion tank (93) is located the top of right side minute flitch (92), the exit end of going up dispersion tank (93) is located the below of left side minute flitch (92), the exit end of lower dispersion tank (94) is located the below of left side minute flitch (92), the inner chamber that is used for polishing chamber in the polishing chamber is transferred to the inner chamber (93) of the outside of the place of the polishing chamber (94), the inner chamber that will be used for transferring to the left side dispersion tank (93.

2. The rice surface polishing apparatus for rice processing according to claim 1, wherein the number of the upper dispersion grooves (93) is two and is located on both sides of the lower dispersion groove (94), respectively, and the sum of the sectional areas of the two upper dispersion grooves (93) is the same as the sectional area of the lower dispersion groove (94).

3. The rice surface polishing device for rice processing according to claim 2, wherein an upper fog air groove (95) is formed around the groove wall of the upper dispersing groove (93), a lower fog air groove (96) is formed around the groove wall of the lower dispersing groove (94), the upper fog air groove (95) and the lower fog air groove (96) have the same structure, the direction of the air outlet of the upper fog air groove (95) is consistent with the direction of the rice grains moving in the upper dispersing groove (93), the direction of the air outlet of the lower fog air groove (96) is consistent with the direction of the rice grains moving in the lower dispersing groove (94), a fog air channel (97) is formed in the box body (91), the upper fog air groove (95), the lower fog air groove (96) are communicated with the fog air channel (97), the fog air channel (97) is connected with a fog air pipe (11), the air pipe (11) is connected with an atomizer (12), and the inlet end of the atomizer (12) is connected with a water tank (13).

4. A rice surface polishing device for rice processing according to claim 3, wherein the outer circumference of the polishing roller (5) is sleeved with a scraping ring (8), the scraping ring (8) comprises a ring plate (801) and inclined shovel edges (802), the ring plate (801) is annular, the inclined shovel edges (802) are connected to two sides of the ring plate (801), and the outer edges of the inclined shovel edges (802) are in contact with the outer wall of the polishing roller (5).

5. The rice surface polishing device for rice processing according to claim 4, wherein the outer wall of the polishing roller (5) is provided with a spiral rail (7), the inner wall of the annular plate (801) is connected with a rail groove guide pillar (803), the rail groove guide pillar (803) moves along the spiral rail (7), the spiral rail (7) comprises a forward rail groove (701) and a reverse rail groove (702), the forward rail groove (701) and the reverse rail groove (702) spirally extend in the axial direction of the polishing roller (5), the front end and the rear end of the polishing roller (5) are respectively provided with an initial positioning groove (703) and a final positioning groove (704), the structures of the initial positioning groove (703) and the final positioning groove (704) are the same, the front ends of the forward rail groove (701) and the reverse rail groove (702) are smoothly intersected with the initial positioning groove (703), the rear ends of the forward rail groove (701) and the reverse rail groove (702) are smoothly intersected with the final positioning groove (704), the initial positioning groove (701), the front end and the reverse rail groove (702) are smoothly intersected with the final positioning groove (704), the outer wall (703) of the circulating slide rail component (9) and the bottom surface (803) are provided with a sliding component (9), the scraping ring (8) moves axially along the bulk cargo box (9) through a sliding rail assembly (14).

6. The rice surface polishing apparatus for rice processing as recited in claim 5, wherein the forward rail groove (701) includes a forward large-diameter groove (711) and a forward small-diameter groove (712), the reverse rail groove (702) includes a reverse large-diameter groove (721) and a reverse small-diameter groove (722), the forward large-diameter groove (711) and the reverse large-diameter groove (721) have the same diameter, the forward small-diameter groove (712) and the reverse small-diameter groove (722) have the same diameter, the forward large-diameter groove (711) and the reverse small-diameter groove (722) are close to an edge of the polishing roller (5), the forward small-diameter groove (712) is connected to an end of the forward large-diameter groove (711) close to a center of the polishing roller (5), the reverse large-diameter groove (721) is connected to an end of the reverse small-diameter groove (722) close to the center of the polishing roller (5), the middle parts of the initial positioning groove (703) and the end positioning groove (704) are cylindrical, the initial positioning groove (703), the end point (704) and the end point (731) are respectively moved on the same diameter as the forward positioning groove (721), and the end point (741) of the initial positioning groove (703) are respectively.

7. The rice surface polishing device for rice processing as recited in claim 6, wherein the rail groove guide pillar (803) comprises a center pillar (831), one end of the center pillar (831) is connected to an inner wall of the annular plate (801), an upper small diameter guide pillar (832) and a lower small diameter guide pillar (833) are sequentially arranged on the center pillar (831), the diameters of the upper small diameter guide pillar (832) and the lower small diameter guide pillar (833) are the same, the diameters of the upper small diameter guide pillar (832) and the lower small diameter guide pillar (833) are larger than the center pillar (831), the diameter of the center pillar (831) is larger than the diameters of the upper small diameter guide pillar (832) and the lower small diameter guide pillar (833), the diameters of the large diameter guide pillar (834) are larger than the diameters of the upper small diameter guide pillar (832) and the lower small diameter guide pillar (833), the diameter of the large diameter guide pillar (834) are alternately arranged along the center pillar (834) and move up and down, the diameter of the large diameter guide pillar (834) is larger than the diameter of the upper small diameter guide pillar (721), the small diameter guide pillar (833) is larger than the diameter of the small diameter guide pillar (833), the large diameter guide pillar (722) is larger than the small diameter of the small diameter guide pillar (833) and the small diameter opposite groove (722) is larger than the large diameter of the small diameter guide pillar (834), the bottom of the large-diameter guide post (834) is connected with a positioning magnetic ring (835), the positioning magnetic ring (835) and the upward-moving magnetic ring (731) are mutually exclusive, and the positioning magnetic ring (835) and the downward-moving magnetic ring (741) are mutually attracted.