Coix seed brown rice whitening machine and whitening method thereof

Abstract

The invention relates to the technical field of coix seed brown rice whitening, and particularly discloses a coix seed brown rice whitening machine and a whitening method.The coix seed brown rice whitening machine comprises a base, an upper base is arranged at the top of the base, a bran discharging structure is arranged on one side of the bottom of the base, a processing cavity is formed between the base and the upper base, and the base is rotationally connected with an emery roll through a bearing; a spiral groove is formed in the outer surface of the emery roll, a cavity is formed in the emery roll, a channel is arranged on one side of the cavity, the cavity is communicated with the channel, the other end of the emery roll extends to the outside of the base and is connected with a fan through a connecting column, a screen piece is further arranged on the base, and a plurality of screen holes are formed in the screen piece. The coix seed brown rice whitening device is novel in structure, the coix seed brown rice whitening uniformity is improved, the product quality is improved, unnecessary loss caused by excessive peeling of part of rice grains is prevented, broken rice, rice bran and other byproducts in the whitening process are fully utilized, meanwhile, chaff is prevented from flying around, and chaff recycling is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of whitening of coix seed and brown rice, in particular to a whitening machine for whitening of coix seed and brown rice and a whitening method thereof. Background Art

[0002] Barley and Brown Rice is a healthy food that combines barley and brown rice, usually as a nutritious grain. Each of them has unique health benefits, and together they can not only enhance the nutritional value but also enrich the taste. Barley, also known as coix seed, belongs to the grass family and is a common healthy food. Barley is highly regarded in traditional Chinese medicine and is believed to have the following effects:

[0003] Diuretic and dampness-eliminating: It helps the body to drain water and is suitable for people with edema and heavy dampness. Strengthening the spleen and removing dampness: Coix seed can strengthen the spleen and stomach, which is beneficial to the health of the digestive system and is suitable for people with loss of appetite, indigestion, etc. Anti-inflammatory and antioxidant: Coix seed is rich in antioxidants, such as polyphenols and flavonoids, which help slow down aging and improve skin health. Promoting metabolism: It helps to accelerate metabolism and maintain a healthy state of the body.

[0004] Job's tears are often used to make porridge, soup, or as part of the staple food. It has a slightly tough texture and a certain aroma. Brown rice is rice that has not been husked, retaining the outer husk, germ and bran, so it contains more nutrients than white rice. The main advantages of brown rice include: Rich in dietary fiber: The dietary fiber content of brown rice is much higher than that of white rice, which helps promote gastrointestinal motility and improve constipation; Low glycemic index: The glycemic index of brown rice is low, which helps stabilize blood sugar and is suitable for diabetic patients; Rich in vitamins and minerals: Such as B vitamins, iron, magnesium, zinc, etc., which help maintain the body's normal metabolism and enhance immunity; Enhance satiety: Because it contains more dietary fiber, brown rice can increase satiety and help control weight; The taste of brown rice is relatively rough, slightly tough, but chewy, suitable for making rice, porridge, soup, etc.

[0005] Barley and brown rice is a very healthy food combination. It is not only rich in vitamins and minerals, but also has multiple benefits such as promoting digestion, promoting water and moisture removal, and controlling blood sugar. Through reasonable combination and proper cooking, it can be used as part of daily diet to provide more comprehensive nutrition for the body.

[0006] Whitening of brown rice with coix seed refers to the process of processing brown rice and coix seed to remove the outer bran and the outer skin of coix seed, making it a finer and whiter rice grain. The purpose of this process is to remove the rough part of the surface, making the food taste softer and easier to digest. Specifically, whitening of brown rice with coix seed may involve the following steps: Whitening of brown rice: After the outer bran and germ of brown rice are milled, they can become a state similar to white rice, removing the rough outer layer. Whitened brown rice is usually softer and tastes better than unwhitened brown rice, but correspondingly, it will lose some nutrients, especially fiber and B vitamins, because most of these nutrients are concentrated in the bran and germ parts; Whitening of coix seed: The outer skin of coix seed itself is relatively hard, and it usually needs to be milled or processed to make it more delicate and easier to cook and digest. The taste of whitened coix seed is more delicate, suitable for making porridge or other foods. The whitened barley brown rice is suitable for people who have high requirements for taste, such as those who like to eat soft rice or porridge with a delicate taste. However, in order to ensure the nutrition of the food, it is recommended to eat it with other high-fiber or nutritious foods.

[0007] The whitening of Job's tears brown rice needs to be processed by a whitening machine. The Job's tears brown rice whitening machine is used to remove the outer layer of rice bran from unprocessed grains such as brown rice and Job's tears to make them finer. The whitening effect of the existing Job's tears brown rice whitening machine is not uniform enough. Even for the same batch of raw materials, the degree of whitening of different grains may vary, resulting in excessive peeling of some rice grains, while some rice grains still retain some outer layers, affecting the quality of the product, resulting in a large amount of brown rice and Job's tears outer layers being removed too much, resulting in unnecessary losses. The by-products such as broken rice and rice bran in the whitening process may also be difficult to fully utilize, resulting in a certain amount of food waste. At the same time, the rice bran produced by whitening flies everywhere, affecting the working environment. No solutions have been proposed for related technical issues. Summary of the invention

[0008] In view of the problems in the related technology, the present invention proposes a coix seed brown rice whitening machine and a whitening method thereof to overcome the above-mentioned technical problems existing in the existing related technology. The purpose of the present invention is to improve the uniformity of the whitening of coix seed brown rice, improve the quality of the product, prevent unnecessary losses caused by excessive peeling of some rice grains, make full use of by-products such as broken rice and rice bran in the whitening process, and prevent the flying of dregs and bran to achieve the recovery of dregs and bran.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A coix seed and brown rice whitening machine comprises a base, an upper seat is arranged on the top of the base, a discharge port is provided at the bottom of the base, a bran discharge structure is provided on one side of the bottom of the base, a feed hopper is connected to one side of the top of the upper seat, a processing chamber is formed between the base and the upper seat, an emery roller is rotatably connected to the base through a bearing, a spiral groove is provided on the outer surface of the emery roller, the emery roller is arranged inside the processing chamber, one end of the emery roller extends to the outside of the base and is fixedly connected to a transmission wheel, a cavity is provided inside the emery roller, and the emery roller is provided with a cavity. A channel is provided on one side of the cavity, and the cavity and the channel are connected. The other end of the sand roller extends to the outside of the base and is connected to a fan through a connecting column. The sand roller is also provided with air holes, and the air holes are connected to the cavity. The air outlet of the fan extends to the inside of the channel. A screen is also provided on the base, and a plurality of screen holes are provided on the screen. One end of the screen is fixedly connected to the inside of the base, a gap is formed between the inner wall of the screen and the outer wall of the sand roller, and an opening is formed between the other end of the screen and the inner wall of the base.

[0011] Preferably, the bran discharge structure comprises a support seat and a material guide plate, the support seat is provided with a material storage cavity, the material guide plate is mounted on the support seat, and the material guide plate is provided with a plurality of discharge ports.

[0012] Preferably, the base and the upper seat are connected by a hinge.

[0013] Preferably, the screen is arranged in a semi-cylindrical structure, and the outer side surfaces at both ends of the screen are fixedly connected with a plurality of connecting nails, and connecting flanges are provided at both ends of the screen, and the connecting flanges include a disc body and a cylinder body, the disc body is a semi-disc structure, and the disc body is provided with a plurality of screw holes, and the cylinder body is a semi-cylindrical structure, one end of the cylinder body is fixedly connected to one end of the disc body, the disc body and the cylinder body are coaxial, and the cylinder body is provided with a plurality of connecting holes, and the plurality of connecting holes are equidistantly distributed, and the two connecting flanges are respectively installed at the two ends of the screen through connecting nails and connecting holes, the inner diameter of the inner side surface of the cylinder body away from the disc body matches the outer diameter of the outer side surface of the screen, and the inner diameter of the inner side surface of the cylinder body close to the disc body matches the inner diameter of the inner side surface of the screen.

[0014] Preferably, a buffer rubber pad is provided between the cylinder and the screen, and the screen is fixedly connected to the inner wall of the base via a connecting flange.

[0015] Preferably, a supporting leg is provided on one side of the bran discharge structure.

[0016] Preferably, an arc frame is further provided inside the upper seat, one end of the arc frame is fixedly connected to the inner wall of the upper seat, and an opening 2 is formed between the other end of the arc frame and the inner wall of the upper seat.

[0017] Preferably, the height of the gap is 5-7 cm.

[0018] Preferably, the length direction of the sieve holes is perpendicular to the rotating axis of the emery roller, two adjacent sieve holes are staggered with each other, and the spacing between the sieve plate and the emery roller is 1.0 cm-1.5 cm.

[0019] To achieve the above object, the present invention also provides the following technical solutions:

[0020] A method for whitening a coix seed and brown rice whitening machine, used for the coix seed and brown rice whitening machine described above, characterized in that it comprises the following steps:

[0021] Step 1: Throw the coix seed brown rice into the feed hopper, and it falls to the gap between the sand roller and the screen by gravity;

[0022] Step 2: Using an external driving device, the emery roller is driven to rotate through a belt and a transmission wheel, and the coix seed brown rice is whitened by the friction and impact between the two sides of the gap and the emery roller; the speed of the emery roller is 350r / min-400r / min;

[0023] Step 3: When the sand roller rotates, the fan works, and the wind it generates passes through the channel, cavity, and pores in sequence, and blows toward the gap, so that the bran is discharged from the bran discharge structure, and at the same time, the shelled coix seed brown rice falls downward through the sieve holes.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The present invention is a whitening machine for coix seed and brown rice and a whitening method thereof. A sand roller and a screen are provided, and a gap is formed between the inner wall of the screen and the outer wall of the sand roller. When the coix seed and brown rice enter from the feed hopper, they fall into the gap, and the rotating sand roller shells the coix seed and brown rice. The shelled coix seed and brown rice fall downward through the screen, and the empty shell moves to the right along the channel, and finally falls into the bran discharge structure from the opening formed by the right end of the screen and the inner right side wall of the base. The shelling effect is relatively good, and the bran discharge structure can collect the residual bran in a centralized manner, effectively avoiding the problem of residual bran floating and affecting the working environment, and effectively reducing the unshelled coix seed and brown rice from entering the bran discharge structure, thereby further improving the shelling effect;

[0026] (2) The present invention is a whitening machine for coix seed and brown rice and a whitening method thereof. By setting a bran discharge structure, the bran can be temporarily stored to prevent the bran from floating around. By setting a fan, the wind generated by the fan passes through the channel, the cavity, and the pores in sequence and blows toward the gap, which can accelerate the movement of the bran, and can better make room for the unhulled coix seed and brown rice, further increasing the hulling effect.

[0027] (3) The present invention relates to a coix seed and brown rice whitening machine and a whitening method thereof. By setting an arc frame, a gap is also formed between the arc frame and the sand roller, which can improve the efficiency of shelling. By setting connecting flanges at both ends of the screen, it is convenient to install and disassemble the screen, and the replacement efficiency is high. By setting a buffer rubber pad, when the screen is subjected to the pressure of the coix seed and brown rice, the elastic force of the buffer rubber pad will produce a small elastic displacement, thereby avoiding the rigid screen from damaging the coix seed and brown rice. By setting sieve holes on the screen, adjacent sieve holes are staggered with each other, thereby reducing the friction of the sieve on the coix seed and brown rice, and reducing the broken rice rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the side view of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the present invention from a top view;

[0032] Figure 5 for Figure 4 AA section structure schematic diagram in;

[0033] Figure 6 It is a structural schematic diagram of the screen plate of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the screen plate of the present invention when it is unfolded;

[0035] Figure 8 for Figure 7 Schematic diagram of the local structure at point B.

[0036] Figure numerals: 1. base; 2. upper seat; 3. bran discharge structure; 301. support seat; 302. guide plate; 303. material storage chamber; 304. discharge port; 4. feed hopper; 5. sand roller; 6. transmission wheel; 7. cavity; 8. channel; 9. connecting column; 10. fan; 11. air hole; 12. sieve; 13. sieve hole; 14. connecting nail; 15. connecting flange; 151. disc body; 152. cylinder body; 153. connecting hole; 16. discharge port; 17. buffer rubber pad; 18. supporting leg; 19. arc frame. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1-8 The invention provides a technical solution of a coix seed and brown rice whitening machine and a whitening method thereof: a coix seed and brown rice whitening machine comprises a base 1, and an upper base 2 is arranged on the top of the base 1, and specifically, the base 1 and the upper base 2 play a supporting role; a discharge port 16 is provided at the bottom of the base 1, and specifically, the discharge port 16 is convenient for discharging the processed coix seed and brown rice; a bran discharge structure 3 is provided on one side of the bottom of the base 1, and specifically, the bran discharge structure 3 is convenient for collecting the dregs and bran; a feed hopper 4 is connected to one side of the top of the upper base 2, and a processing chamber is formed between the base 1 and the upper base 2, and specifically, the material can enter the processing chamber from the feed hopper 4; the base 1 is rotatably connected to a sand roller 5 through a bearing, and a spiral groove is provided on the outer surface of the sand roller 5, and the sand roller 5 is arranged inside the processing chamber, and one end of the sand roller 5 extends to the outside of the base 1 and is fixedly connected to a transmission wheel 6, and specifically, an external driving device is connected to the transmission wheel 6 through a belt to drive the The transmission wheel 6 rotates, thereby rotating the sand roller 5 connected to the transmission wheel 6; a cavity 7 is provided inside the sand roller 5, and a channel 8 is provided on one side of the cavity 7, the cavity 7 and the channel 8 are connected, the other end of the sand roller 5 extends to the outside of the base 1, and is connected to a fan 10 through a connecting column 9, and an air hole 11 is also provided on the sand roller 5, the air hole 11 is connected to the cavity 7, and the air outlet of the fan 10 extends to the inside of the channel 8. Specifically, the wind generated by the fan 10 passes through the channel 8, the cavity 7, and the air hole 11 in sequence, and blows toward the gap, which can accelerate the movement of the chaff, and can better make room for the unshelled coix seed brown rice, further increasing the shelling effect; a screen 12 is also provided on the base 1, and a plurality of screen holes 13 are provided on the screen 12, one end of the screen 12 is fixedly connected to the inside of the base 1, a gap is formed between the inner wall of the screen 12 and the outer wall of the sand roller 5, and an opening is formed between the other end of the screen 12 and the inner wall of the base 1.

[0040] In the present embodiment, the emery roller 5 utilizes an external driving device (driving motor) to be connected with the transmission wheel 6 through a belt, so as to drive the emery roller 5 to rotate, and a gap is formed between the inner side surface of the screen and the outer side surface of the emery roller 5. When the coix seed brown rice (with shell) enters the gap, the rotating emery roller 5 shells the coix seed brown rice shell, and the shelled coix seed brown rice falls downward through the screen, while the empty shell moves to the right along the channel 8, and finally falls into the bran discharge structure 3 from the opening formed by the right end of the screen 12 and the inner right side wall of the base 1, so that the shelling effect is better, and the bran discharge structure 3 can collect the dregs and brans in a centralized manner, effectively avoiding the problem that the dregs and brans float and affect the working environment;

[0041] The present invention places the feed hopper 4 close to the left side of the upper seat 2 and the bran discharge structure 3 close to the right side of the base 1. After the material enters from the feed hopper 4, it falls into the gap for hulling. The design of this structure can maximize the distance that the material reaches the bran discharge structure 3, which can effectively reduce the amount of unhulled coix seed and brown rice that enters the bran discharge structure 3, thereby further improving the hulling effect.

[0042] See also Figure 1 As shown, further, the bran discharge structure 3 includes a support seat 301 and a guide plate 302 , the support seat 301 is provided with a material storage cavity 303 , the guide plate 302 is installed on the support seat 301 , and a plurality of discharge ports 304 are opened on the guide plate 302 .

[0043] In this embodiment, the present invention forms an outlet for discharging only the material (hulled coix seed brown rice) on the left side of the discharge port 16 by aligning the right side of the top opening of the bran discharge structure 3 with the right side of the discharge port 16, and forms an outlet for discharging bran (without a filter screen) on the right side;

[0044] The present invention is provided with a material guide plate 302, which is inclined below the discharge port 16 of the base 1. A discharge port 304 is opened on the side of the material guide plate 302. The coix seed and brown rice (the coix seed and brown rice mixed in the dregs) falling through the discharge port 304 falls below the discharge port 16. By providing a storage cavity 303 and a detachable mesh cover at the top opening, the dregs and brans can be temporarily stored. The mesh cover can prevent the dregs and brans from floating around. The storage cavity 303 plays a role in collecting the dregs and brans, and the support seat 301 plays a supporting role.

[0045] See also Figure 1-3 As shown, further, the base 1 and the upper seat 2 are connected by a hinge.

[0046] In this embodiment, a hinge is provided to facilitate the connection between the base 1 and the upper seat 2.

[0047] See also Figure 5-8As shown, further, the screen 12 is arranged in a semi-cylindrical structure, and the outer sides of both ends of the screen 12 are fixedly connected with a plurality of connecting nails 14, and both ends of the screen 12 are provided with connecting flanges 15, and the connecting flanges 15 include a disc body 151 and a cylinder body 152, and the disc body 151 is in a semi-circular disc structure, and a plurality of screw holes are opened on the disc body 151, and the cylinder body 152 is in a semi-cylindrical structure, and one end of the cylinder body 152 is fixedly connected with one end of the disc body 151, and the disc The body 151 and the cylinder 152 are coaxial, and a plurality of connecting holes 153 are opened on the cylinder 152, and the plurality of connecting holes 153 are equidistantly distributed. The two connecting flanges 15 are respectively installed at the two ends of the screen 12 through the connecting nails 14 and the connecting holes 153. The inner diameter of the inner side of the cylinder 152 away from the disc body 151 matches the outer diameter of the outer side of the screen 12, and the inner diameter of the inner side of the cylinder 152 close to the disc body 151 matches the inner diameter of the inner side of the screen 12.

[0048] In this embodiment, the connection between the sieve 12 and the connecting flange 15 is convenient. By matching the inner diameter of the inner side of the cylinder 152 away from the disk 151 with the outer diameter of the outer side of the sieve 12, and matching the inner diameter of the inner side of the cylinder 152 close to the disk 151 with the inner diameter of the inner side of the sieve 12, the cylinder 152 and the inner wall of the sieve 12 will not block or damage the coix seed brown rice due to the different radii.

[0049] See also Figure 8 As shown, further, a buffer rubber pad 17 is provided between the cylinder 152 and the screen 12 , and the screen 12 is fixedly connected to the inner wall of the base 1 through a connecting flange 15 .

[0050] In this embodiment, the buffer rubber pad causes the screen to undergo a slight elastic displacement when the screen is subjected to pressure from the coix seed and brown rice due to the elastic force of the buffer rubber pad, thereby preventing the rigid screen from damaging the coix seed and brown rice.

[0051] See also Figure 1 As shown, further, a supporting leg 18 is provided on one side of the bran discharge structure 3 .

[0052] In this embodiment, the support legs 18 play a supporting role.

[0053] See also Figure 5 As shown, further, an arc frame 19 is provided inside the upper seat 2, one end of the arc frame 19 is fixedly connected to the inner wall of the upper seat 2, and an opening 2 is formed between the other end of the arc frame 19 and the inner wall of the upper seat 2.

[0054] In this embodiment, a gap is also formed between the arc frame and the sand roller, which can improve the efficiency of shelling.

[0055] Furthermore, the height of the gap is 5-7 cm.

[0056] See also Figure 5-8 As shown, further, the length direction of the sieve hole 13 is perpendicular to the rotation axis of the emery roller 5, two adjacent sieve holes 13 are staggered with each other, and the spacing between the sieve plate 12 and the emery roller 5 is 1.0 cm-1.5 cm.

[0057] In this embodiment, by making the length direction of the sieve hole 13 perpendicular to the central axis of the sieve plate 12, the breakage rate of the coix seed brown rice is reduced, the probability of hole clogging is reduced, and the probability of broken rice being squeezed out is reduced; by staggering adjacent sieve holes 13, the friction of the sieve plate 12 on the coix seed brown rice is reduced, thereby reducing the broken rice rate.

[0058] To achieve the above object, the present invention also provides the following technical solutions:

[0059] A method for whitening a coix seed and brown rice whitening machine, used for the above coix seed and brown rice whitening machine, characterized in that it comprises the following steps:

[0060] Step 1: throw the coix seed brown rice into the feed hopper 4, and let it fall to the gap between the sand roller 5 and the screen 12 by gravity;

[0061] Step 2: Using an external driving device, the emery roller 3 is driven to rotate through a belt and a transmission wheel 31, and the coix seed brown rice is whitened by the friction and impact between the two sides of the gap and the emery roller 5; the rotation speed of the emery roller 5 is 350r / min-400r / min;

[0062] Step 3: When the sand roller 5 rotates, the fan 10 works, and the wind it generates passes through the channel 8, the cavity 7, and the air hole 11 in sequence, and blows toward the gap, so that the bran is discharged from the bran discharge structure 3, and at the same time, the shelled coix seed brown rice falls downward through the sieve hole 13.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coix seed brown rice whitening machine, characterized in that: The invention comprises a base (1), wherein an upper seat (2) is arranged on the top of the base (1), a discharge port (16) is provided on the bottom of the base (1), a bran discharge structure (3) is provided on one side of the bottom of the base (1), a feed hopper (4) is connected to the top side of the upper seat (2), a processing chamber is formed between the base (1) and the upper seat (2), the base (1) is rotatably connected to a sand roller (5) via a bearing, a spiral groove is provided on the outer surface of the sand roller (5), the sand roller (5) is arranged inside the processing chamber, one end of the sand roller (5) extends to the outside of the base (1) and is fixedly connected to a transmission wheel (6), a cavity (7) is provided inside the sand roller (5), and a channel (8) is provided on one side of the cavity (7). ), the cavity (7) and the channel (8) are connected, the other end of the sand roller (5) extends to the outside of the base (1) and is connected to a fan (10) through a connecting column (9), the sand roller (5) is also provided with an air hole (11), the air hole (11) is connected to the cavity (7), the air outlet of the fan (10) extends to the inside of the channel (8), the base (1) is also provided with a screen (12), the screen (12) is provided with a plurality of screen holes (13), one end of the screen (12) is fixedly connected to the inside of the base (1), a gap is formed between the inner wall of the screen (12) and the outer wall of the sand roller (5), and an opening is formed between the other end of the screen (12) and the inner wall of the base (1).

2. The coix seed and brown rice whitening machine according to claim 1, characterized in that: The bran discharge structure (3) comprises a support seat (301) and a material guide plate (302); the support seat (301) is provided with a material storage cavity (303); the material guide plate (302) is mounted on the support seat (301); and the material guide plate (302) is provided with a plurality of discharge openings (304).

3. The coix seed and brown rice whitening machine according to claim 2, characterized in that: The base (1) and the upper base (2) are connected via a hinge.

4. The coix seed and brown rice whitening machine according to claim 1, characterized in that: The sieve plate (12) is arranged in a semi-cylindrical structure. The outer sides of both ends of the sieve plate (12) are fixedly connected with a plurality of connecting nails (14). Both ends of the sieve plate (12) are provided with connecting flanges (15). The connecting flanges (15) include a disc body (151) and a cylinder body (152). The disc body (151) is in a semi-circular disc structure. The disc body (151) is provided with a plurality of screw holes. The cylinder body (152) is in a semi-cylindrical structure. One end of the cylinder body (152) is fixedly connected with one end of the disc body (151). The cylinder (151) and the cylinder (152) are coaxial, the cylinder (152) is provided with a plurality of connection holes (153), the plurality of connection holes (153) are equidistantly distributed, the two connection flanges (15) are respectively mounted on the two ends of the sieve plate (12) through the connection pins (14) and the connection holes (153), the inner diameter of the inner side surface of the cylinder (152) away from the disk body (151) matches the outer diameter of the outer side surface of the sieve plate (12), and the inner diameter of the inner side surface of the cylinder (152) close to the disk body (151) matches the inner diameter of the inner side surface of the sieve plate (12).

5. The coix seed and brown rice whitening machine according to claim 4, characterized in that: A buffer rubber pad (17) is provided between the cylinder (152) and the screen plate (12), and the screen plate (12) is fixedly connected to the inner wall of the base (1) via a connecting flange (15).

6. The coix seed and brown rice whitening machine according to claim 1, characterized in that: A supporting leg (18) is provided on one side of the bran discharge structure (3).

7. The coix seed and brown rice whitening machine according to claim 1, characterized in that: An arc frame (19) is also provided inside the upper seat (2), one end of the arc frame (19) is fixedly connected to the inner wall of the upper seat (2), and an opening 2 is formed between the other end of the arc frame (19) and the inner wall of the upper seat (2).

8. The coix seed and brown rice whitening machine according to claim 1, characterized in that: The height of the gap is 5-7 cm.

9. The coix seed and brown rice whitening machine according to claim 1, characterized in that: The length direction of the sieve holes (13) is perpendicular to the rotation axis of the emery roller (5), two adjacent sieve holes (13) are staggered with each other, and the spacing between the sieve plate (12) and the emery roller (5) is 1.0 cm-1.5 cm.

10. A method for whitening coix seed and brown rice using a coix seed and brown rice whitening machine, used for the coix seed and brown rice whitening machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: throwing the coix seed brown rice into the feed hopper (4), and letting it fall by gravity to the gap formed by the sand roller (5) and the screen (12); Step 2: using an external driving device to drive the emery roller (3) to rotate through a belt and a transmission wheel (31), and relying on the friction and impact between the two sides of the gap and the emery roller (5), the coix seed brown rice is whitened; the rotation speed of the emery roller (5) is 350r / min-400r / min; Step 3: When the sand roller (5) rotates, the fan (10) works, and the wind it generates passes through the channel (8), the cavity (7), and the air hole (11) in sequence, and blows toward the gap, so that the bran is discharged from the bran discharge structure (3), and at the same time, the shelled coix seed brown rice falls downward through the sieve hole (13).

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