Fine-whitening rice milling mechanism

Abstract

The utility model discloses a refined rice milling mechanism which comprises a main shaft, the two ends of the main shaft are sleeved with a feeding bearing seat and a discharging bearing seat respectively, a rice sieve assembly and a sieve frame assembly are arranged at the positions, located between the feeding bearing seat and the discharging bearing seat, of the outer side of the main shaft respectively, and the rice sieve assembly is arranged on the inner side of the sieve frame assembly. A bran discharging chamber is formed between the rice sieve assembly and the sieve frame assembly, a roller assembly and a propeller assembly are arranged at the position, between the feeding bearing seat and the discharging bearing seat, of the main shaft in a sleeving mode, the roller assembly comprises at least two rollers, the propeller assembly comprises at least two propellers, and a rice milling chamber is formed between the rice sieve assembly and the roller assembly. The feeding bearing seat and the discharging bearing seat are provided with a feeding port and a discharging port which are communicated with the interior of the rice milling chamber respectively. According to the utility model, at least one conveyor is additionally arranged on the basis of a traditional rice milling mechanism, so that the polishing, whitening and shelling effects of brown rice can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rice milling technical field, concretely relates to a refined white rice milling mechanism. BACKGROUND

[0002] The rice milling mechanism is the mechanism for peeling and whitening brown rice in the rice mill, and is also a relatively important mechanism in the rice milling mechanism. The existing rice milling mechanism of the rice mill generally includes one or two rollers, and a conveyor is configured to convey brown rice. In the existing design, one sand roller is generally provided, and a conveyor is provided at the front end of the sand roller, and a polishing head or an iron roller is also provided at the rear end of the sand roller. In the actual polishing process of brown rice, a small amount of rice is often mixed in the brown rice; when polishing, since only one pusher is provided on the main shaft, the pressure is weakened in the process of the brown rice after being polished by the sand roller to open the brown rice and enter the polishing head or the iron roller provided at the rear end, so that the pressure at the rice outlet is increased, thereby causing problems such as broken rice, high rice temperature, and the like, and finally affecting the polishing, whitening, and hulling effects of brown rice.

[0003] In the existing design, the utility model patent with publication number CN115283048A discloses a rice mill, which includes a rice milling device, and the rice milling device includes: a main shaft arranged in a vertical direction; a driving assembly, a driving end of the driving assembly is connected with the main shaft, and the driving assembly is used for driving the main shaft to rotate around the vertical direction; a sand roller, the sand roller is sleeved outside the main shaft, the sand roller extends in the vertical direction, and the main shaft drives the sand roller to rotate around the vertical direction; a rice sieve net, the rice sieve net is sleeved outside the sand roller, an abrading chamber is formed between the rice sieve net and the sand roller, the abrading chamber is provided with an abrading feeding top port and an abrading discharging bottom port; a rice milling shell, the rice milling shell is sleeved outside the rice sieve net, and a bran discharging chamber is formed between the rice sieve net and the rice milling shell. It further includes a spiral conveyor, and the spiral conveyor is arranged at the upper part of the abrading chamber and is sleeved outside the main shaft.

[0004] As can be seen from the description of the above existing design, the conveyor of the rice mill or the rice milling mechanism in the existing design is generally designed as one, which cannot solve the problems of broken rice, high rice temperature, and the like caused by the weakened pressure of brown rice after being polished by the sand roller to open the brown rice, and cannot guarantee the polishing, whitening, and hulling effects of brown rice. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a refined white rice milling mechanism, which can guarantee the polishing, whitening, and hulling effects of brown rice on the basis of the traditional rice milling mechanism by increasing at least one conveyor.

[0006] The utility model discloses a technical scheme adopted is: a kind of fine white rice milling mechanism, including main shaft, the both ends of main shaft are respectively equipped with feed bearing seat and discharge bearing seat, the one end of main shaft is also equipped with transmission pulley near feed bearing seat or discharge bearing seat, the position of main shaft outside between feed bearing seat and discharge bearing seat is equipped with rice sieve assembly and sieve frame assembly respectively, the rice sieve assembly is arranged in the inboard of sieve frame assembly, the rice sieve assembly and sieve frame assembly form bran discharge chamber between, the position of main shaft between feed bearing seat and discharge bearing seat is equipped with roll assembly and propeller assembly, the roll assembly includes at least two rolls, the propeller assembly includes at least two propellers, the rice sieve assembly and roll assembly form rice milling chamber between, the feed bearing seat and discharge bearing seat are respectively equipped with feed inlet and discharge outlet with the inside communication of rice milling chamber.

[0007] In one embodiment, the roll assembly includes a rice milling sand roller and a rice milling iron roller, the rice milling sand roller is sleeved on one end close to the feed inlet, and the rice milling iron roller is sleeved on one end close to the discharge outlet.

[0008] In one embodiment, the propeller assembly includes a sand roller propeller and an iron roller propeller, the sand roller propeller is sleeved on one end of the rice milling sand roller away from the rice milling iron roller and extends to the inside of the feed bearing seat, and the iron roller propeller is sleeved between the rice milling sand roller and the rice milling iron roller.

[0009] In one embodiment, the rice sieve assembly includes a first rice sieve and a second rice sieve, the first rice sieve is arranged outside the rice milling sand roller, the second rice sieve is arranged outside the rice milling iron roller, the screen hole diameter of the first rice sieve is greater than that of the second rice sieve, and two independent rice milling chambers are formed between the first rice sieve and the rice milling sand roller and between the second rice sieve and the rice milling iron roller respectively.

[0010] In one embodiment, a discharge separation ring is arranged between the sieve frame assembly and the discharge bearing seat.

[0011] In one embodiment, the sieve frame assembly includes a first sieve section, a connecting section and a second sieve section, the first sieve section and the second sieve section are connected through the connecting section, the first sieve section is arranged outside the first rice sieve, the second sieve section is arranged outside the second rice sieve, screen holes are formed on the first sieve section and the second sieve section, the screen hole diameter of the first sieve section is greater than that of the second sieve section, the connecting section is arranged outside the iron roller propeller, and a transition chamber is formed between the connecting section and the iron roller propeller.

[0012] In one embodiment, the sieve frame assembly is formed by a plurality of sieve frames connected to each other, the first sieve section, the connecting section and the second sieve section are arranged on each sieve frame, and a reinforcing rib is arranged on each sieve frame.

[0013] In one embodiment, the main shaft is internally provided with a through hole, and a plurality of ventilation hole assemblies are arranged around the axis of the main shaft. Each ventilation hole assembly includes ventilation holes distributed along the length of the main shaft.

[0014] In one embodiment, the feeding bearing seat includes a first step and a second step connected to each other, and the first step and the second step are respectively provided with a first connecting hole and a second connecting hole connected to each other. The first connecting hole has a larger diameter than the second connecting hole. The sand roller propeller is arranged inside the first connecting hole. The second connecting hole is sequentially provided with a first feeding bearing, a spacer sleeve A, a second feeding bearing, and a spacer sleeve B from one end close to the first connecting hole to one end away from the first connecting hole, and the spacer sleeve B is sleeved with a feeding bearing end cover connected to the end surface of the feeding bearing seat.

[0015] In one embodiment, the feeding bearing seat includes a first step and a second step connected to each other, and the first step and the second step are respectively provided with a first connecting hole and a second connecting hole connected to each other. The first connecting hole has a larger diameter than the second connecting hole. The sand roller propeller is arranged inside the first connecting hole. The second connecting hole is sequentially provided with a first feeding bearing, a spacer sleeve A, a second feeding bearing, and a spacer sleeve B from one end close to the first connecting hole to one end away from the first connecting hole, and the spacer sleeve B is sleeved with a feeding bearing end cover connected to the end surface of the feeding bearing seat.

[0016] The beneficial effects of the present application are as follows: at least one conveyor is added to the traditional rice milling mechanism, and the sand roller propeller ensures that the brown rice can be smoothly polished by the rice milling sand roller after passing through the sand roller propeller, thereby realizing the functions of opening and polishing the brown rice; the iron roller propeller peels and polishes a small amount of unhusked rice mixed in the brown rice, thereby ensuring the quality of the rice; at the same time, the pressure of the rice milling chamber is increased, and the dust on the surface of the rice polished by the rice milling sand roller is removed, thereby achieving a bright and round effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application is a structural schematic diagram;

[0018] Figure 2 The present application is a structural schematic diagram; Figure 1 The present application is a structural schematic diagram;

[0019] Figure 3 The present application is a structural schematic diagram; Figure 2 The present application is a structural schematic diagram;

[0020] Figure 4 The present application is a structural schematic diagram; Figure 2 The present application is a structural schematic diagram;

[0021] Figure 5 The present application is an exploded view;

[0022] Figure 6 The present application is a structural schematic diagram of a screen frame;

[0023] Figure 7 The present application is a structural schematic diagram of a main shaft;

[0024] Figure 8 It is the structure schematic drawing of the feeding bearing seat of the utility model.

[0025] In the drawing: 1, main shaft;2, feeding bearing seat;3, discharging bearing seat;4, transmission pulley;5, rice sieve assembly;6, sieve frame assembly;7, bran discharging chamber;8, roller assembly;9, pusher assembly;10, rice milling chamber;11, feeding port;12, discharging port;13, discharging partition ring;14, first feeding bearing;15, spacer sleeve A;16, second feeding bearing;17, spacer sleeve B;18, feeding bearing end cover;19, bearing bushing;20, discharging bearing;21, discharging bearing end cover;22, iron roller lock nut;23, pulley lock nut;101, through hole;102, ventilation hole assembly;1021, ventilation hole;201, first step;202, second step;203, first connecting hole;204, second connecting hole;501, first rice sieve;502, second rice sieve;601, first sieve section;602, connecting section;603, second sieve section;604, transition chamber;605, reinforcing rib;801, rice milling sand roller;802, rice milling iron roller;901, sand roller pusher;902, iron roller pusher. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0027] As Figures 1-8 shown, the utility model discloses a kind of fine white rice milling mechanism, including main shaft 1, the main shaft 1 two ends are respectively sleeved with feeding bearing seat 2 and discharging bearing seat 3, the main shaft 1 is close to feeding bearing seat 2 or the one end of discharging bearing seat 3 still be sleeved with transmission pulley 4, the position of the main shaft 1 outside between feeding bearing seat 2 and discharging bearing seat 3 is equipped with rice sieve assembly 5 and sieve frame assembly 6 respectively, the rice sieve assembly 5 is arranged in the inside of sieve frame assembly 6, the rice sieve assembly 5 and sieve frame assembly 6 between form bran discharging chamber 7, the position of the main shaft 1 between feeding bearing seat 2 and discharging bearing seat 3 is sleeved with roller assembly 8 and pusher assembly 9, the roller assembly 8 includes at least two rollers, the pusher assembly 9 includes at least two pushers, the rice sieve assembly 5 and roller assembly 8 form rice milling chamber 10, feeding bearing seat 2 and discharging bearing seat 3 are equipped with feeding port 11 and discharging port 12 respectively with the inside communication of rice milling chamber 10.

[0028] In the embodiment, the roller assembly 8 includes rice milling sand roller 801 and rice milling iron roller 802, the rice milling sand roller 801 is sleeved in one end close to feeding port 11, and the rice milling iron roller 802 is sleeved in one end close to discharging port 12.

[0029] In the embodiment, the propeller assembly 9 comprises a sand roller propeller 901 and an iron roller propeller 902, the sand roller propeller 901 is sleeved on the end of the rice milling sand roller 801 away from the rice milling iron roller 802 and extends to the inside of the feeding bearing seat 2, and the iron roller propeller 902 is sleeved between the rice milling sand roller 801 and the rice milling iron roller 802.

[0030] In the embodiment, the rice sieve assembly 5 comprises a first rice sieve 501 and a second rice sieve 502, the first rice sieve 501 is arranged outside the rice milling sand roller 801, the second rice sieve 502 is arranged outside the rice milling iron roller 802, the sieve hole diameter of the first rice sieve 501 is larger than that of the second rice sieve 502, and two independent rice milling chambers 10 are formed between the first rice sieve 501 and the rice milling sand roller 801 and between the second rice sieve 502 and the rice milling iron roller 802 respectively.

[0031] In the embodiment, the discharge separation ring 13 is arranged between the sieve frame assembly 6 and the discharge bearing seat 3.

[0032] In the embodiment, the sieve frame assembly 6 comprises a first sieve section 601, a connecting section 602 and a second sieve section 603, the first sieve section 601 and the second sieve section 603 are connected through the connecting section 602, the first sieve section 601 is arranged outside the first rice sieve 501, the second sieve section 603 is arranged outside the second rice sieve 502, sieve holes are arranged on the first sieve section 601 and the second sieve section 603, the sieve hole diameter of the first sieve section 601 is larger than that of the second sieve section 603, the connecting section 602 is arranged outside the iron roller propeller 902, and a transition chamber 604 is formed between the connecting section 602 and the iron roller propeller 902.

[0033] In the embodiment, the sieve frame assembly 6 is formed by connecting a plurality of sieve frames, the first sieve section 601, the connecting section 602 and the second sieve section 603 are arranged on each of the sieve frames, and a reinforcing rib 605 is arranged on each of the sieve frames.

[0034] In the embodiment, the main shaft 1 is internally provided with a through hole 101, a plurality of ventilation hole assemblies 102 are arranged on the outer side of the main shaft 1 around the axis thereof, and each of the ventilation hole assemblies 102 comprises ventilation holes 1021 distributed on the main shaft 1 along the length direction of the main shaft 1.

[0035] In the embodiment, the feeding bearing seat 2 comprises a first step 201 and a second step 202 connected with each other, the first step 201 and the second step 202 are respectively provided with a first connecting hole 203 and a second connecting hole 204 connected with each other, the first connecting hole 203 has a diameter larger than that of the second connecting hole 204, the sand roller propeller 901 is arranged inside the first connecting hole 203, and the second connecting hole 204 is sequentially provided with a first feeding bearing 14, a spacer sleeve A 15, a second feeding bearing 16 and a spacer sleeve B 17 from one end close to the first connecting hole 203 to one end away from the first connecting hole 203, the spacer sleeve B 17 is sleeved on the main shaft 1, and the feeding bearing end cover 18 connected with the end surface of the feeding bearing seat 2 is sleeved on the spacer sleeve B 17.

[0036] In the embodiment, the discharging bearing seat 3 is provided with a bearing bush 19 sleeved on the main shaft 1, the discharging bearing 20 is sleeved on the bearing bush 19, and the discharging bearing end cover 21 connected with the end surface of the discharging bearing seat 3 is arranged on the end surface of the discharging bearing seat 3 and sleeved on the main shaft 1.

[0037] In the rice milling mechanism, although the disclosed roller assembly 8 and propeller assembly 9 are both two. However, according to the demand of rice milling, more rollers and propellers can be sleeved on the main shaft to meet the demand of actual use. At the same time, the iron roller lock nut 22 and the pulley lock nut 23 are arranged respectively to lock the rice milling iron roller 802 and the transmission pulley 4, so that the rice milling iron roller 802 and the transmission pulley 4 do not displace during rotation. At the same time, after limiting the two ends, other components arranged between the two ends do not need to be limited.

[0038] In the rice milling mechanism, the functions of each assembly are as follows:

[0039] 1. The main shaft 1 is the main supporting component in the rice milling mechanism, which transmits power to other parts of the rice milling mechanism under the drive of the transmission pulley 4. Through the rotation of the main shaft 1, the coordinated work of the components in the rice milling mechanism is realized, so that the milling and processing of brown rice are completed. At the same time, the main shaft 1 is provided with a through hole 101 and a ventilation hole, the ventilation hole enables the negative pressure strong wind to be formed in the rice milling chamber 10. This negative pressure strong wind helps the brown rice to be in a suspended state, in which the influence of gravity on the brown rice is greatly reduced, so that the rice milling process is more efficient and uniform. At the same time, the negative pressure strong wind can also sufficiently reduce the temperature of the rice. The ventilation hole enables the external cold air to enter the rice milling chamber 10 and exchange heat with the materials, so as to reduce the temperature of the rice. This negative pressure strong wind can also make the bran discharge more thorough, so as to reduce the broken rice rate.

[0040] 2、Feed bearing seat 2: Feed bearing seat 2 is located at the feed end of the rice milling mechanism main shaft 1, and mainly functions to support and fix the first feed bearing 14 and the second feed bearing 16, to ensure that the main shaft 1 can rotate stably, preventing the main shaft 1 from deviating or shaking during operation, thereby ensuring the stability and accuracy of the rice milling process. At the same time, the feed bearing seat 2 can also guide the brown rice, so that the brown rice can smoothly enter the inside of the rice milling mechanism for processing.

[0041] 3、Discharge bearing seat 3: Discharge bearing seat 3 is located at the discharge end of the rice milling mechanism main shaft 1, and also functions to support and fix the discharge bearing, to ensure the stability of the main shaft 1 during the discharge process, preventing damage caused by vibration or impact. After the rice milling is completed, the material will be discharged from the discharge port 12, at which time the main shaft 1 will be subjected to the reaction force and friction force from the discharge port 12. The discharge bearing seat 3 can effectively bear these loads, protecting the main shaft 1 and its connected components from damage.

[0042] 4、Transmission pulley 4: Provides power for the main shaft 1.

[0043] 5、Rice sieve assembly 5: Includes a first rice sieve 501 and a second rice sieve 502, which are used in cooperation with the rice polishing roller 801 and the rice iron roller 802 of the roller assembly 8, to complete the polishing and re-polishing of brown rice in the rice polishing chamber 10.

[0044] 6、Screen frame assembly 6: Cooperates with the rice sieve assembly 5 to complete the bran removal in the bran removal chamber 7; at the same time, the screen frame assembly 6 is set up by connecting several screen frames with each other, facilitating disassembly, and facilitating the replacement and maintenance of the rice sieve assembly 5.

[0045] 7、Roller assembly 8: Includes a rice polishing roller 801 and a rice iron roller 802. The rice polishing roller 801 cooperates with the first rice sieve 501 to complete the polishing of brown rice; the rice iron roller 802 cooperates with the second rice sieve 502 to complete the re-polishing of brown rice, and at the same time, the rice iron roller 802 performs hulling on the rice grains mixed in the brown rice, ensuring the accuracy of the rice.

[0046] 8、Propeller assembly 9: Includes a sand roller propeller 901 and an iron roller propeller 902. The sand roller propeller 901 ensures that the brown rice can be smoothly polished and opened after passing through the sand roller propeller 901 under the action of the rice polishing roller 801. The iron roller propeller 902 has two functions: one is to polish the small amount of unhulled rice grains mixed in the brown rice, thereby ensuring the quality of the rice; the other is to increase the pressure in the rice polishing chamber 10 through the conveying process of the brown rice, to remove the dust on the surface of the rice that has been polished by the rice polishing roller 801, achieving a bright and round effect.

[0047] 9. Discharge ring 13: after the roller assembly 8 and the pusher assembly 9 complete the hulling and polishing of the small amount of unhusked rice, the brown rice and rice hulls are separated, ensuring that the brown rice and rice hulls can be smoothly separated after milling and discharged through different outlets, thereby ensuring the purity of the milled product; at the same time, by adjusting the aperture of the discharge ring 13, the accuracy of the milled rice, i.e. the smoothness of the rice surface and the amount of bran residue, can be controlled.

[0048] In the actual polishing process of brown rice, a small amount of rice is often mixed in the brown rice. Therefore, when the rice milling mechanism is working, the drive device is first used to drive the transmission pulley 4 to rotate, thereby driving the main shaft 1 to rotate. The brown rice and rice enter the milling chamber 10 through the feed port 11, and are pushed to the milling sand roller 801 and the first rice sieve 501 under the action of the sand roller pusher 901. Under the action of the brown rice and the brown rice, the brown rice and the milling sand roller 801, and the brown rice and the first rice sieve 501, the polishing is completed. After polishing, the polished brown rice and the polished brown rice are transported to the milling iron roller 802 and the second rice sieve 502 under the action of the iron roller pusher 902, and the polished brown rice is polished again under the action of the brown rice and the brown rice, the brown rice and the milling iron roller 802, and the brown rice and the second rice sieve 502. At the same time, the rice mixed in is dehulled, ensuring the accuracy of the rice. The milled rice is discharged from the discharge port 12. During the entire process, the rice bran produced enters the bran discharge chamber 7 and is discharged from the bran discharge chamber 7.

[0049] The above-described embodiments only express the specific implementation of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A rice milling mechanism, characterized in that: The utility model relates to a rice mill, comprising a main shaft (1), a feeding bearing seat (2) and a discharging bearing seat (3) are sleeved on both ends of the main shaft (1) respectively, a transmission pulley (4) is further sleeved on one end of the main shaft (1) close to the feeding bearing seat (2) or the discharging bearing seat (3), a rice sieve assembly (5) and a sieve frame assembly (6) are respectively arranged on the outer side of the main shaft (1) between the feeding bearing seat (2) and the discharging bearing seat (3), the rice sieve assembly (5) is arranged on the inner side of the sieve frame assembly (6), a bran discharging chamber (7) is formed between the rice sieve assembly (5) and the sieve frame assembly (6), a roller assembly (8) and a propeller assembly (9) are sleeved on the main shaft (1) between the feeding bearing seat (2) and the discharging bearing seat (3), the roller assembly (8) comprises at least two rollers, the propeller assembly (9) comprises at least two propellers, a rice milling chamber (10) is formed between the rice sieve assembly (5) and the roller assembly (8), a feeding port (11) and a discharging port (12) are respectively arranged on the feeding bearing seat (2) and the discharging bearing seat (3) and communicate with the inside of the rice milling chamber (10).

2. The mechanism for refining white rice according to claim 1, wherein: The roller assembly (8) comprises a rice milling sand roller (801) and a rice milling iron roller (802), the rice milling sand roller (801) is sleeved on one end close to the feeding port (11), and the rice milling iron roller (802) is sleeved on one end close to the discharging port (12).

3. The mechanism for refining white rice according to claim 2, wherein: The propeller assembly (9) comprises a sand roller propeller (901) and an iron roller propeller (902), the sand roller propeller (901) is sleeved on one end of the rice milling sand roller (801) away from the rice milling iron roller (802) and extends to the inside of the feeding bearing seat (2), and the iron roller propeller (902) is sleeved between the rice milling sand roller (801) and the rice milling iron roller (802).

4. The mechanism for refining white rice according to claim 3, wherein: The rice sieve assembly (5) comprises a first rice sieve (501) and a second rice sieve (502), the first rice sieve (501) is arranged on the outer side of the rice milling sand roller (801), the second rice sieve (502) is arranged on the outer side of the rice milling iron roller (802), the screen hole diameter of the first rice sieve (501) is greater than that of the second rice sieve (502), and two independent rice milling chambers (10) are respectively formed between the first rice sieve (501) and the rice milling sand roller (801) and between the second rice sieve (502) and the rice milling iron roller (802).

5. The mechanism for refining white rice according to claim 1, wherein: A discharging partition ring (13) is arranged between the sieve frame assembly (6) and the discharging bearing seat (3).

6. The mechanism for refining white rice according to claim 4, wherein: The screen frame assembly (6) comprises a first screen section (601), a connecting section (602) and a second screen section (603), the first screen section (601) and the second screen section (603) are connected through the connecting section (602), the first screen section (601) is arranged outside the first mill screen (501), the second screen section (603) is arranged outside the second mill screen (502), the first screen section (601) and the second screen section (603) are both provided with screen holes, the screen hole diameter of the first screen section (601) is larger than that of the second screen section (603), the connecting section (602) is arranged outside the iron roller propeller (902), and a transition chamber (604) is formed between the connecting section (602) and the iron roller propeller (902).

7. The mechanism for refining white rice according to claim 6, wherein: The screen frame assembly (6) is connected by a plurality of screen frames, each of the screen frames is provided with a first screen section (601), a connecting section (602) and a second screen section (603), and each of the screen frames is provided with a reinforcing rib (605).

8. The mechanism for refining white rice according to claim 7, wherein: The main shaft (1) is internally provided with a through hole (101), and a plurality of ventilation hole assemblies (102) are arranged outside the main shaft (1) around the axis of the main shaft (1), each ventilation hole assembly (102) comprises ventilation holes (1021) distributed on the main shaft (1) along the length direction of the main shaft (1).

9. The mechanism for refining white rice according to claim 8, wherein: The feeding bearing seat (2) comprises a first step (201) and a second step (202) connected with each other, the first step (201) and the second step (202) are respectively provided with a first connecting hole (203) and a second connecting hole (204) which are in communication with each other, the diameter of the first connecting hole (203) is larger than that of the second connecting hole (204), the sand roller propeller (901) is arranged inside the first connecting hole (203), the second connecting hole (204) is sequentially provided with a first feeding bearing (14), a spacer sleeve A (15), a second feeding bearing (16) and a spacer sleeve B (17) which are sleeved on the main shaft (1) from one end close to the first connecting hole (203) to one end away from the first connecting hole (203), and the spacer sleeve B (17) is sleeved with a feeding bearing end cover (18) connected with the end face of the feeding bearing seat (2).

10. The mechanism for refining white rice according to claim 8, wherein: The discharging bearing seat (3) is internally provided with a bearing bush (19) sleeved on the main shaft (1), the bearing bush (19) is sleeved with a discharging bearing (20), and the end face of the discharging bearing seat (3) is provided with a discharging bearing end cover (21) sleeved on the main shaft (1) and connected with the end face of the discharging bearing seat (3).

Images