Low gi mixed grain high value processing starch extraction unit

By designing the slide plate and elastic plate structure of the grain starch centrifugal sieve, the problems of incomplete separation of sweet potato residue and water mixture and clogging of spray nozzles were solved, achieving efficient starch extraction and separation.

CN122098071APending Publication Date: 2026-05-29SHANXI FUNCTIONAL FOOD RES INST OF SHANXI AGRI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI FUNCTIONAL FOOD RES INST OF SHANXI AGRI UNIV
Filing Date
2026-03-18
Publication Date
2026-05-29

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Abstract

The present application relates to the technical field of starch extraction, in particular to a low GI coarse grain high-value processing starch extraction unit; it comprises a machine body, a cover body, a sieve basket, a driving device, a residue bin, a powder bin, a discharge port and a partition plate; a plurality of cleaning plates are arranged on the outer sides of the two fixed plates; when the sliding plate reciprocates in the interior of the discharge pipe, the elastic plate reciprocates in the interior of the nozzle; in the process, the elastic plate reciprocally slides between the two fixed plates, so that the cleaning plates on the fixed plates are scraped on the surface of the elastic plate, thereby scraping the residual sweet potato residue on the surface of the elastic plate, thereby avoiding the problem that the sweet potato residue is adhered to the cleaning plate due to the viscosity of the internal starch, causing the mixture of sweet potato powder and water to be difficult to discharge from the nozzle.
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Description

Technical Field

[0001] This invention relates to the field of coarse grain processing technology, specifically a starch extraction unit for high-value processing of low-GI coarse grains. Background Technology

[0002] Low-GI whole grains are whole grains and legumes with a GI value (glycemic index) of ≤55. Their key feature is slow digestion and absorption, resulting in a gradual rise in blood sugar after consumption, which can avoid large fluctuations in blood sugar. They are also rich in dietary fiber, B vitamins and minerals, and have a greater feeling of fullness and nutrient density than refined rice and flour. They are the preferred ingredients for controlling blood sugar, losing fat and healthy eating.

[0003] Low-GI grains include those processed from tubers, such as sweet potatoes. Specifically, the sweet potatoes are crushed, and the crushed sweet potato flour particles are mixed with water. Then, the starch in the sweet potato flour is extracted, and the starch is separated from the sweet potato residue to obtain starch.

[0004] The residue left after extracting starch from sweet potato flour (sweet potato residue) can be processed into low-GI whole grain foods. Specifically, the low-GI properties are achieved through proper processing and combination. The core reason is that the GI value of potato residue is inherently low (about 35-45, which meets the low-GI standard) and rich in dietary fiber (which can further delay the rise in blood sugar). Specifically, the water in the sweet potato residue can be squeezed out, and it can be mixed with brown rice, oat rice, and red beans (all of which are low-GI whole grains) in a certain proportion. The mixture should be soaked for 2-4 hours in advance (sweet potato residue is hard, and it is easier to cook after soaking). Water can be added and the mixture can be cooked into whole grain rice or porridge to obtain low-GI whole grains.

[0005] However, in the above-mentioned process of separating sweet potato residue, the existing method usually involves mixing the sweet potato residue with water and then putting it into a centrifuge all at once. The centrifuge then rotates, and during the rotation, the sweet potato residue and water are separated by centrifugal force. During this process, the water mixes with the starch in the sweet potato residue, causing the water to carry the starch away from the sweet potato residue, thus reducing the starch content in the sweet potato residue. However, if a large amount of sweet potato starch and water are centrifuged simultaneously, some starch will be adsorbed by the sweet potato residue in the middle area, resulting in incomplete starch separation. If a spraying method is used to inject the mixture of sweet potato starch and water into the centrifuge, the sweet potato starch and starch have a certain degree of stickiness, which can cause the spray nozzle to become clogged.

[0006] In summary, to address the technical problems raised in this paper, this invention proposes a low-GI grain high-value processing starch extraction unit. Summary of the Invention

[0007] To address the aforementioned issue where simultaneous centrifugation of large quantities of sweet potato starch and water leads to some starch being adsorbed by the sweet potato residue in the middle zone, resulting in incomplete starch separation, and the problem of clogging the spray nozzles due to the viscosity of the sweet potato starch and water mixture when spraying it into the centrifuge, this invention proposes a low-GI, high-value-added starch extraction unit for miscellaneous grains. This device includes a miscellaneous grain starch centrifugal sieve, which comprises a body, a cover, a sieve basket, and a drive mechanism; the cover is positioned opposite the machine... The machine body has a closed internal cavity, and the screen basket is set inside the cavity. The drive device makes the screen basket rotate. A slag bin is set on the lower side of the end of the machine body near the cover. The powder bin is located inside the end of the machine body away from the cover. The discharge port on the lower side of the machine body is connected to the powder bin. An annular partition plate is set inside the machine body to separate the slag bin and the powder bin. The screen basket is conical, and the outer side of the screen basket near the cover is rotatably connected to the inner side of the partition plate. The other end is located inside the powder bin. A rotating ring is set in the middle of the screen basket inside the powder bin. The surface of the rotating ring is wavy.

[0008] A feed pipe runs through the cover, and a water inlet pipe is connected to the feed pipe located outside the machine body. A mixing disc is rotatably connected to one end of the feed pipe inside the machine body. The mixing disc is hollow and connected to the feed pipe. Multiple discharge pipes are evenly arranged on the outer ring of the distribution disc, and the discharge pipes are connected to the inside of the mixing disc. A nozzle is provided on the outside of the discharge pipe. A sliding plate is slidably connected inside the discharge pipe. The other end of the sliding plate passes through the end of the discharge pipe, and the end of the sliding plate that passes through the end of the discharge pipe contacts the surface of the rotating ring. An elastic plate is provided on the surface of the sliding plate, and the end of the elastic plate away from the sliding plate extends into the nozzle.

[0009] As a preferred embodiment of this application, two fixing plates are provided on both sides of the inside of the nozzle, the fixing plates are located inside the nozzle, and the elastic plate is located between the two fixing plates.

[0010] As a preferred embodiment of this application, multiple cleaning plates are fixed on both sides of the fixing plate, and the cleaning plates are in contact with the surface of the elastic plate.

[0011] As a preferred embodiment of this application, a rotating ring is provided at one end of the nozzle located inside the discharge pipe, and fixed plates located on both sides inside the nozzle are disposed inside the rotating ring.

[0012] As a preferred embodiment of this application, a pivot is provided at one end of the elastic plate near the slide plate, and the pivot is rotatably connected to the slide plate.

[0013] As a preferred embodiment of this application, the fixed plate is made of an elastic metal sheet, and a blocking plate is provided on the outer side of the end of the elastic plate away from the slide plate; when the elastic plate moves, the blocking plate contacts the end of the fixed plate away from the rotating ring.

[0014] As a preferred embodiment of this application, a rectangular ring is provided at the end of the two fixed plates away from the rotating ring, and the elastic plate passes through the rectangular ring. When the elastic plate moves, the blocking plate contacts the rectangular ring.

[0015] As a preferred embodiment of this application, an infrared spectral sensor and a controller are installed at the discharge port at the lower end of the powder silo.

[0016] The beneficial effects of this invention are as follows:

[0017] By setting multiple cleaning plates on the outside of the two fixed plates, when the slide plate reciprocates inside the discharge pipe, the elastic plate reciprocates inside the nozzle. During this process, the elastic plate slides back and forth between the two fixed plates, causing the cleaning plates on the fixed plates to scrape the surface of the elastic plate, thereby scraping off the remaining sweet potato residue on the surface of the elastic plate. This avoids the problem of sweet potato residue sticking to the cleaning plate due to the stickiness of the starch inside, which would otherwise make it difficult for the sweet potato starch and water to be discharged from the nozzle. Attached Figure Description

[0018] Figure 1 This is a perspective view of the centrifugal sieve in this invention;

[0019] Figure 2 This is a perspective view of the driving device in this invention;

[0020] Figure 3 This is a perspective view of the slag silo in this invention;

[0021] Figure 4 This is a half-sectional view of the centrifugal sieve in this invention;

[0022] Figure 5 This is a cross-sectional view of the sieve basket in this invention;

[0023] Figure 6 This is a structural view of the mixing disc in this invention;

[0024] Figure 7 This is an internal structural view of the nozzle in this invention;

[0025] Figure 8 This is a structural view of the nozzle in this invention;

[0026] Figure 9 This is a cross-sectional view of the discharge pipe in this invention;

[0027] Figure 10 This is a structural view of the elastic plate in this invention;

[0028] In the diagram: 1. Body; 2. Cover; 3. Screen basket; 4. Drive unit; 11. Slag bin; 12. Powder bin; 13. Discharge port; 14. Isolation plate; 31. Rotating ring; 21. Feed pipe; 22. Water inlet pipe; 23. Mixing disc; 24. Discharge pipe; 25. Nozzle; 26. Slide plate; 27. Elastic plate; 251. Fixing plate; 252. Cleaning plate; 32. Rotating ring; 28. Barrier plate; 29. ​​Rectangular ring; 5. Infrared spectral sensor. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1:

[0031] like Figures 1 to 10 As shown; a low-GI grain high-value processing starch extraction unit, the device includes a grain starch centrifugal sieve, the centrifugal sieve includes a body 1, a cover 2, a sieve basket 3 and a drive device 4; the cover 2 seals the internal cavity of the body 1, the sieve basket 3 is set inside the cavity of the body 1, and the drive device 4 realizes the rotation of the sieve basket 3; the characteristic is that a slag hopper 11 is provided on the lower side of the end of the body 1 near the cover 2; the interior of the end of the body 1 away from the cover 2 is a powder hopper 12, the discharge port 13 opened on the lower side of the body 1 is connected to the powder hopper 12, and an annular isolation plate 14 is provided inside the body 1 to isolate the slag hopper 11 and the powder hopper 12; the sieve basket 3 is conical, and the outer side of the end of the sieve basket 3 near the cover 2 is rotatably connected to the inner side of the isolation plate 14, and the other end is located inside the powder hopper 12. A rotating ring 31 is provided in the middle of the sieve basket 3 inside the powder hopper 12, and the surface of the rotating ring 31 is wavy.

[0032] A feed pipe 21 is provided through the cover 2, and a water inlet pipe 22 is connected to the feed pipe 21 located outside the machine body 1; a mixing disc 23 is rotatably connected to one end of the feed pipe 21 inside the machine body 1, the mixing disc 23 is hollow inside and communicates with the feed pipe 21; a plurality of discharge pipes 24 are evenly arranged on the outer ring of the distribution disc, and the discharge pipes 24 communicate with the inside of the mixing disc 23; a nozzle 25 is provided on the outside of the discharge pipe 24; a sliding plate 26 is slidably connected inside the discharge pipe 24, the other end of the sliding plate 26 passes through the end of the discharge pipe 24, and the end of the sliding plate 26 that passes through the end of the discharge pipe 24 contacts the surface of the rotating ring 31; an elastic plate 27 is provided on the surface of the sliding plate 26, and the end of the elastic plate 27 away from the sliding plate 26 extends into the nozzle 25;

[0033] Two fixing plates 251 are provided on both sides of the inside of the nozzle 25. The fixing plates 251 are located inside the nozzle 25, and the elastic plate 27 is located between the two fixing plates 251.

[0034] Multiple cleaning plates 252 are fixed on both sides of the fixed plate 251, and the cleaning plates 252 are in contact with the surface of the elastic plate 27.

[0035] The specific workflow is as follows;

[0036] Workers load the crushed sweet potato flour into the feed pipe 21. During this process, an external water pipe is connected to the water inlet pipe 22, allowing the sweet potato flour to continuously flow into the feed pipe 21. Water is continuously introduced into the feed pipe 21 through the water inlet pipe 22, mixing the water and sweet potato flour. The mixed sweet potato flour then enters the mixing tray 23, and subsequently flows through the mixing tray 23 into the discharge pipe 24. Finally, it is pumped out through the nozzle 25. When the sweet potato flour mixed with water is sprayed onto the sieve basket 3 through the nozzle 25, the inner ring of the sieve basket 3 has a filter screen. After the sweet potato flour and water are sprayed onto the sieve basket 3, the drive device 4 drives the sieve basket 3 to rotate, causing the water and sweet potato flour mixture sprayed onto the surface of the sieve basket 3 to spread. During the process, the mixture of water and sweet potato starch is subjected to centrifugal force by the sieve basket 3, causing the water mixed with small starch particles to pass through the sieve basket 3 into the powder hopper 12. Subsequently, the water mixed with starch flows out from the discharge port 13 below the powder hopper 12, obtaining a mixture of water and starch. This mixture of water and starch is sent to the next process to extract starch. Meanwhile, the larger sweet potato residue particles are blocked by the filter screen on the sieve basket 3, causing the sweet potato residue to remain on the filter screen. Subsequently, the sieve basket 3 continues to rotate, and the sweet potato residue falls from the sieve basket 3 into the residue hopper 11, causing the sweet potato residue to be discharged from the bottom of the residue hopper 11. After the workers remove the sweet potato residue, they process it to obtain low glycated grains (GI).

[0037] During the above process, as the sieve basket 3 rotates, the rotating ring 31 in the middle of the inner side of the sieve basket 3 rotates synchronously. The discharge pipes 24 are set on the mixing disc 23, and all discharge pipes 24 are inclined on the mixing disc 23. The discharge pipes 24 are parallel to the inner wall of the sieve basket 3, so that the distance between the ends of the discharge pipes 24 near the sieve basket 3 is smaller than the distance between the ends of the discharge pipes 24 away from the sieve basket 3. Furthermore, a sliding plate 26 is slidably connected inside the discharge pipe 24, and one end of the sliding plate 26 extends out of the discharge pipe 24, and the end of the sliding plate 26 extending out of the discharge pipe 24 contacts the rotating ring 31. The surface of the rotating ring 31 is wavy, and a spring is set between the sliding plate 26 and the discharge pipe 24. When the sieve basket 3 rotates, the sieve basket 3... The rotating ring 31 in the middle rotates. During the rotation of the rotating ring 31, the wave surface on the rotating ring 31 guides the slide plate 26, causing the slide plate 26 to reciprocate on the wave surface of the rotating ring 31. At the same time, the slide plate 26 reciprocates inside the discharge pipe 24. The elastic plate 27 set on the surface of the slide plate 26 moves with the slide plate 26. Since the elastic plate 27 is located in the nozzle 25, the elastic plate 27 slides back and forth in the nozzle 25. When the elastic plate 27 slides back and forth in the nozzle 25, it can clean the mixture of sweet potato residue and water in the nozzle 25, thereby avoiding the nozzle 25 from being blocked, which would make it difficult for the mixture of sweet potato residue and water to be sprayed out normally, thus avoiding the problem of low separation efficiency of sweet potato residue and starch.

[0038] Furthermore, by setting fixed plates 251 on both sides inside the discharge pipe 24, and with the elastic plate 27 located between the fixed plates 251, the two fixed plates 251 clamp the elastic plate 27 when it reciprocates inside the nozzle 25. This prevents the elastic plate 27 from reciprocating with the slide plate 26 inside the discharge pipe 24, thus avoiding the problem of the elastic plate 27 sealing the connection between the nozzle 25 and the discharge pipe 24.

[0039] Furthermore, by setting multiple cleaning plates 252 on the outside of the two fixed plates 251, when the slide plate 26 reciprocates inside the discharge pipe 24, the elastic plate 27 reciprocates inside the nozzle 25. During this process, the elastic plate 27 slides back and forth between the two fixed plates 251, causing the cleaning plates 252 on the fixed plates 251 to scrape the surface of the elastic plate 27, thereby scraping off the remaining sweet potato residue on the surface of the elastic plate 27. This avoids the problem of the sweet potato residue sticking to the cleaning plate 252 due to the stickiness of the starch inside, which would make it difficult for the sweet potato starch and water to be discharged from the nozzle 25.

[0040] Example 2:

[0041] like Figures 2 to 10As shown; a rotating ring 32 is provided at one end of the nozzle 25 inside the discharge pipe 24, and the fixing plates 251 located on both sides inside the nozzle 25 are provided on the inner side of the rotating ring 32.

[0042] A pivot is provided at one end of the elastic plate 27 near the slide plate 26, and the pivot is rotatably connected to the slide plate 26.

[0043] The specific workflow is as follows;

[0044] Based on the above embodiment, a rotating ring 32 is provided at one end of the nozzle 25 located inside the discharge pipe 24, and the end of the elastic plate 27 near the slide plate 26 is connected to the slide plate 26 via a rotating shaft. When the slide plate 26 reciprocates inside the discharge pipe 24, the slide plate 26 drives the elastic plate 27 to reciprocate. During the reciprocating motion of the elastic plate 27, since the elastic plate 27 and the slide plate 26 are rotatably connected via a rotating shaft, there is a rotating pair between the elastic plate 27 and the slide plate 26. Therefore, during the movement of the slide plate 26, there is a probability that the elastic plate 27 will rotate. When the elastic plate 27 shows a tendency to rotate... The elastic plate 27 pushes the two fixed plates 251, causing the fixed plates 251 to rotate. When the fixed plates 251 rotate, the rotating ring 32 rotates inside the nozzle 25. When the slide plate 26 reciprocates inside the discharge pipe 24, the elastic plate 27 reciprocates inside the nozzle 25, preventing blockage inside the nozzle 25. At the same time as the elastic plate 27 reciprocates, it rotates inside the nozzle 25, allowing the elastic plate 27 to thoroughly clean the inside of the nozzle 25, thereby preventing blockage and ensuring that the mixture of sweet potato starch and water is not easily sprayed out, thus improving the separation efficiency of sweet potato residue and starch.

[0045] Example 3:

[0046] like Figures 1 to 10 As shown; the fixed plate 251 is made of elastic metal sheet, and a barrier plate 28 is provided on the outer side of the end of the elastic plate 27 away from the slide plate 26; when the elastic plate 27 moves, the barrier plate 28 contacts the end of the fixed plate 251 away from the rotating ring 32.

[0047] A rectangular ring 29 is provided at the end of the two fixed plates 251 away from the rotating ring 32, and the elastic plate 27 passes through the rectangular ring 29. When the elastic plate 27 moves, the blocking plate 28 contacts the rectangular ring 29.

[0048] The specific workflow is as follows;

[0049] Based on the above embodiments, the material of the fixing plate 251 is made of an elastic metal sheet, specifically an elastic steel sheet. A baffle plate 28 is provided on the outer side of the end of the elastic plate 27 away from the slide plate 26. When the elastic plate 27 is inside the nozzle 25 and slides back and forth between the two fixing plates 251, when the baffle plate 28 on the elastic plate 27 contacts the end of the fixing plate 251, the baffle plate 28 squeezes the end of the fixing plate 251, causing the two fixing plates 251 to bend inside the nozzle 25. This causes the fixing plates 251 to agitate inside the nozzle 25, further preventing the nozzle 25 from becoming clogged and reducing the problem of the nozzle 25 failing to spray the mixture of sweet potato starch and water.

[0050] Furthermore, by setting a rectangular ring 29 at the end of the two fixed plates 251 away from the rotating ring 32, the rectangular ring 29 fixes the end of the two fixed plates 251 away from the rotating ring 32. Based on the above, when the elastic plate 27 reciprocates inside the nozzle 25, the blocking plate 28 on the surface of the elastic plate 27 pushes the lower end of the rectangular ring 29, causing the rectangular ring 29 to move towards the end closer to the rotating ring 32. The middle of the fixed plate 251 between the rectangular ring 29 and the rotating ring 32 bends; and the elastic plate 27 will rotate to a certain extent, causing the fixed plate 251 to rotate to a certain extent. Thus, while the fixed plate 251 bends, there is a certain probability that it will rotate, clearing the inside of the nozzle 25 and preventing the nozzle 25 from becoming clogged. This further prevents the sweet potato starch and water from clogging the inside of the nozzle 25.

[0051] Example 4:

[0052] like Figures 1 to 10 As shown; an infrared spectroscopy sensor and controller are installed at the discharge port at the lower end of the powder silo;

[0053] The specific workflow is as follows;

[0054] Based on the above embodiments, an online near-infrared spectral sensor 5 is used, which is fixedly installed at the discharge port 13 at the lower end of the powder silo 12. The probe of the infrared spectral sensor 5 is directly facing the material flow channel of the discharge port 13, and is kept 10-15cm away from the inner wall of the discharge port 13. Distance (to avoid material impact damage); the infrared spectral sensor 5 has a built-in database of starch concentration and spectral intensity standard curves, supporting real-time data calculation and output; after centrifugal separation in the sieve basket 3, the mixture of water and starch flows out from the discharge port 13 at the lower end of the powder hopper 12, flowing through the detection area of ​​the infrared spectral sensor 5; the probe of the infrared spectral sensor 5 continuously emits near-infrared light, penetrating the mixture and capturing the reflected and transmitted spectral signals. The built-in algorithm of the instrument calculates the starch concentration in the mixture in real time based on the spectral intensity comparison standard curve, and transmits the data synchronously to the controller; if the detected starch concentration is lower than the lower limit: the controller automatically increases the speed of the drive device 4, increases the centrifugal force, and at the same time appropriately reduces the feeding speed of the feed pipe 21, prolonging the separation time of the mixture on the sieve basket 3, ensuring that the starch adsorbed on the sweet potato residue is fully detached and passes through the sieve, thereby achieving full separation of starch and sweet potato residue.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-GI grain high-value processing starch extraction unit, the device comprising a grain starch centrifugal sieve, the centrifugal sieve comprising a body (1), a cover (2), a sieve basket (3), and a drive device (4); the cover (2) seals the internal cavity of the body (1), the sieve basket (3) is disposed inside the cavity of the body (1), and the drive device (4) enables the sieve basket (3) to rotate; characterized in that, A slag hopper (11) is provided on the lower side of the end of the machine body (1) near the cover (2); a powder hopper (12) is located inside the end of the machine body (1) away from the cover (2); the discharge port (13) opened on the lower side of the machine body (1) is connected to the powder hopper (12); an annular isolation plate (14) is provided inside the machine body (1); the isolation plate (14) isolates the slag hopper (11) and the powder hopper (12); the screen basket (3) is conical, and the outer side of the screen basket (3) near the cover (2) is rotatably connected to the inner side of the isolation plate (14); the other end is located inside the powder hopper (12); a rotating ring (31) is provided in the middle of the screen basket (3) inside the powder hopper (12); the surface of the rotating ring (31) is wavy. A feed pipe (21) is provided through the cover (2), and a water inlet pipe (22) is connected to the feed pipe (21) located outside the machine body (1); a mixing disc (23) is rotatably connected to one end of the feed pipe (21) inside the machine body (1), the mixing disc (23) is hollow inside and connected to the feed pipe (21); multiple discharge pipes (24) are evenly arranged on the outer ring of the distribution disc, and the discharge pipes (24) are connected to the inside of the mixing disc (23); a nozzle (25) is provided on the outside of the discharge pipe (24); a sliding plate (26) is slidably connected inside the discharge pipe (24), the other end of the sliding plate (26) passes through the end of the discharge pipe (24), and the end of the discharge pipe (24) is in contact with the surface of the rotating ring (31); an elastic plate (27) is provided on the surface of the sliding plate (26), and the end of the elastic plate (27) away from the sliding plate (26) extends into the nozzle (25).

2. The low-GI grain high-value processing starch extraction unit as described in claim 1, characterized in that: Two fixing plates (251) are provided on both sides of the inside of the nozzle (25). The fixing plates (251) are located inside the nozzle (25), and the elastic plate (27) is located between the two fixing plates (251).

3. The low-GI grain high-value processing starch extraction unit as described in claim 2, characterized in that: Multiple cleaning plates (252) are fixed on both sides of the fixed plate (251), and the cleaning plates (252) are in contact with the surface of the elastic plate (27).

4. The low-GI grain high-value processing starch extraction unit as described in claim 3, characterized in that: A rotating ring (32) is provided at one end of the nozzle (25) inside the discharge pipe (24), and the fixing plates (251) on both sides inside the nozzle (25) are located inside the rotating ring (32).

5. The low-GI grain high-value processing starch extraction unit as described in claim 3, characterized in that: The elastic plate (27) is provided with a pivot at one end near the slide plate (26), and the pivot and the slide plate (26) are rotatably connected.

6. The low-GI grain high-value processing starch extraction unit as described in claim 1, characterized in that: The fixed plate (251) is made of elastic metal sheet, and a barrier plate (28) is provided on the outer side of the end of the elastic plate (27) away from the slide plate (26); when the elastic plate (27) moves, the barrier plate (28) contacts the end of the fixed plate (251) away from the rotating ring (32).

7. The low-GI grain high-value processing starch extraction unit as described in claim 6, characterized in that: Two fixed plates (251) are provided with a rectangular ring (29) at the end away from the rotating ring (32), and an elastic plate (27) passes through the rectangular ring (29). When the elastic plate (27) moves, the blocking plate (28) contacts the rectangular ring (29).

8. The low-GI grain high-value processing starch extraction unit as described in claim 1, characterized in that: An infrared spectral sensor (5) and a controller are installed at the discharge port (13) at the lower end of the powder silo (12).