A continuous starch acidification high-speed mixing device and mixing method thereof

Abstract

The present invention proposes a continuous starch acidification high-speed mixing device and a mixing method thereof, and belongs to the technical field of resistant dextrin production. The present invention solves the problem that the existing starch acidification mixing device does not mix starch and hydrochloric acid uniformly, and the starch will agglomerate. The present invention comprises a mixer body, a feed scattering device, a nitrogen blowing device, a hydrochloric acid two-fluid atomizer, a stirrer and a driving device. The mixer body is provided with a main mixing cavity and a feed cavity. One end of the feed cavity is provided with a feed port, and the other end is connected to the main mixing cavity. The feed scattering device is arranged in the feed cavity, the nitrogen blowing device is arranged in the feed cavity, the hydrochloric acid two-fluid atomizer is arranged in the feed cavity, the stirrer is arranged in the main mixing cavity, and the driving device is connected to the stirrer in a transmission manner. The present invention can fully mix starch and hydrochloric acid, and reduce costs.

Description

Technical Field

[0001] The invention belongs to the technical field of resistant dextrin production, and particularly relates to a continuous starch acidification high-speed mixing device and a mixing method thereof. Background Art

[0002] Resistant dextrin products are a kind of dietary fiber made from corn starch through dextrinization reaction, industrial extraction and refining under acidic conditions. They are low in calories, can inhibit the rapid rise of blood sugar levels after meals, can regulate the levels of cholesterol and triglycerides in serum, can reduce the content of medium and low-density fat in internal organs, and have the functions of moisturizing the intestines, promoting intestinal health, enhancing immunity, regulating blood sugar and blood lipids, etc. They are widely used in health products, beverages, baked goods, meal replacement foods, slimming products, special dietary foods, etc., and have broad development prospects in the food industry.

[0003] Before corn starch enters the dextrinization process, it is necessary to first acidify the starch. A certain proportion of liquid hydrochloric acid is added to the starch to adjust the pH value of the starch between 2.0 and 2.5. Whether the hydrochloric acid and starch can be fully mixed is a very critical factor affecting the dextrinization conversion rate of the starch.

[0004] At present, the processes for producing resistant dextrin using corn starch as raw material are faced with the following problems:

[0005] 1. Uneven mixing of starch and hydrochloric acid: Current mixing equipment generally has a simple structure and a low rotation speed, mostly 100 revolutions per minute or less, which leads to uneven mixing. The process of converting starch into resistant dextrin must be carried out under low pH and high temperature conditions. Due to uneven mixing, there is unacidified starch. Even if the subsequent temperature is higher, this starch cannot be converted into resistant dextrin, which ultimately leads to a low dextrin conversion rate and increased raw material consumption. Moreover, after a certain proportion of hydrochloric acid is added to starch, a part of the starch is not acidified, which will inevitably cause the other part of the starch to be over-acidified, and it will over-react under high temperature conditions. After the reaction is completed, the color will increase, which will also cause the operating cost of the carbon decolorization system.

[0006] 2. Starch agglomeration leads to the formation of burnt carbonized particles: hydrochloric acid agglomerates after entering the equipment. The moisture content of the agglomerated starch agglomerates is high, and the moisture cannot be evaporated quickly during the subsequent high-temperature dextrinization process. The agglomerated acidified starch will over-react under high temperature conditions, eventually forming burnt carbonized particles, resulting in the material after slurry adjustment being too dark in color, the carbon column decolorization load increasing, and the carbon column decolorization cost increasing; the burnt carbonized particles that are not dissolved in the slurry adjustment process are discharged from the system in the filtration link, and the starch loss increases, resulting in a decrease in the yield of resistant dextrin and an increase in the unit consumption of raw materials.

[0007] Therefore, there is an urgent need for a starch acidification mixing device that can fully mix starch and hydrochloric acid, achieve a good starch acidification effect, and reduce starch agglomeration. Summary of the invention

[0008] In view of this, in order to solve the problems that the existing starch acidification mixing equipment does not mix starch and hydrochloric acid uniformly, resulting in a low dextrin conversion rate, and starch agglomeration leads to the formation of burnt carbonized particles, which increases the difficulty of subsequent operations and the cost of the decolorization section, the present invention proposes a continuous starch acidification high-speed mixing equipment and a mixing method thereof.

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

[0010] A continuous starch acidification high-speed mixing device, comprising:

[0011] The mixer body is provided with a main mixing cavity and a feed cavity, one end of the feed cavity is provided with a feed port, and the other end is connected with the main mixing cavity;

[0012] A feed scattering device, wherein the feed scattering device is arranged in the feed cavity;

[0013] A nitrogen blowing device, wherein the nitrogen blowing device is arranged in the feed cavity;

[0014] A hydrochloric acid two-fluid atomizer, wherein the hydrochloric acid two-fluid atomizer is arranged in the feed cavity;

[0015] A stirrer and a driving device, wherein the stirrer is arranged in the main mixing cavity, and the driving device is drivingly connected to the stirrer.

[0016] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, the frying plate stirrer includes a main shaft and multiple frying plates, the multiple frying plates are fixedly arranged on the main shaft, the main shaft is rotatably arranged in the main mixing cavity, and nitrogen labyrinth seals are arranged at both ends of the main shaft, and the nitrogen labyrinth seal is used to seal the gap between the main shaft and the main mixing cavity.

[0017] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, the main shaft and the stir-frying plate are both made of acid-resistant materials.

[0018] As a preferred embodiment of the above-mentioned continuous starch acidification high-speed mixing equipment, the main shaft can rotate at a speed of 500 to 1000 revolutions per minute.

[0019] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, the driving device includes a driving motor and a transmission structure, and the driving motor is connected to the main shaft through the transmission structure.

[0020] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, there are multiple hydrochloric acid two-fluid atomizers, and the multiple hydrochloric acid two-fluid atomizers are arranged at intervals.

[0021] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, there are multiple nitrogen blowing devices, and the multiple nitrogen blowing devices are arranged at intervals.

[0022] The present invention also provides a continuous starch acidification high-speed mixing method, using the above-mentioned continuous starch acidification high-speed mixing device, comprising:

[0023] The starch is continuously fed into the feed cavity through the feed port;

[0024] The starch is dispersed by a feed dispersing device;

[0025] Blow nitrogen in the direction opposite to the direction of starch movement through a nitrogen blowing device to disperse the starch thoroughly;

[0026] Spray hydrochloric acid into the feed cavity through a hydrochloric acid two-fluid atomizer to fully mix the hydrochloric acid and starch;

[0027] The starch falls into the main mixing chamber and is stirred and mixed by the stirrer.

[0028] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, the main shaft of the stirrer is monitored for vibration online in real time.

[0029] As a preferred solution of the above-mentioned continuous starch acidification high-speed mixing equipment, the temperature of the stirrer of the stirrer is monitored in real time.

[0030] Compared with the prior art, the continuous starch acidification high-speed mixing device and mixing method provided by the present invention have the following beneficial effects:

[0031] 1. The present invention provides a continuous starch acidification high-speed mixing device and a mixing method thereof, which can effectively improve the color of the material and reduce the cost of carbon column decolorization. During the addition process, the starch is broken up by mechanical force and blown off by nitrogen, which improves the Brownian motion of the starch in the falling space, and can be more effectively and fully mixed with the hydrochloric acid sprayed through the two-fluid atomizer, avoiding the problem of agglomeration of hydrochloric acid after entering the equipment in the traditional process, effectively avoiding the formation of burnt carbonized particles, and significantly improving the color of the material after slurrying, reducing the decolorization load of the carbon column, and reducing the decolorization cost of the carbon column.

[0032] 2. The present invention provides a continuous starch acidification high-speed mixing device and a mixing method thereof, which can improve the yield of resistant dextrin and reduce the amount of raw starch used under the same output. Due to the reduction of burnt carbonized particles, the proportion of starch converted into resistant dextrin increases, the starch loss is reduced, the yield of resistant dextrin is improved, and the unit consumption of raw materials is reduced.

[0033] 3. The present invention provides a continuous starch acidification high-speed mixing equipment and a mixing method thereof. The continuous starch acidification high-speed mixing equipment can achieve full mixing of hydrochloric acid and starch. Through the technical innovation of the internal frying plate stirring, the speed can reach 500 to 1000 revolutions per minute and variable frequency adjustment. The high-speed shear force of the frying plate is used to fully mix the acidified starch, effectively avoiding the problem of some starch not being acidified and some starch being over-acidified in the traditional process.

[0034] 4. The present invention provides a continuous starch acidification high-speed mixing equipment and a mixing method thereof. The continuous starch acidification high-speed mixing equipment can achieve sufficient mixing of hydrochloric acid and starch. Compared with the traditional process, the color of the material is significantly reduced under the condition of the same resistant dextrin conversion rate, and the carbon column decolorization cost is reduced accordingly; compared with the traditional process, under the condition of the same color, the conversion rate of resistant dextrin is significantly improved, thereby reducing the unit consumption of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a schematic structural diagram of a continuous starch acidification high-speed mixing device provided in a specific embodiment of the present invention.

[0037] In the figure:

[0038] 1. Nitrogen blowing device; 2. Hydrochloric acid two-fluid atomizer; 3. Main mixing chamber; 4. Main shaft; 5. Feed port; 6. Feed breaking device; 7. Transmission structure; 8. Drive motor; 9. Discharge port; 10. Base; 11. Stir-frying plate stirrer; 12. Nitrogen sealing inlet; 13. Feed chamber. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] See also Figure 1 Description of this embodiment. The present invention provides a continuous starch acidification high-speed mixing device and a mixing method thereof. The continuous starch acidification high-speed mixing device includes a mixer body, a feed scattering device 6, a nitrogen blowing device 1, a hydrochloric acid two-fluid atomizer 2, a stirrer 11 and a driving device. The mixer body is provided with a main mixing chamber 3 and a feed chamber 13. One end of the feed chamber 13 is provided with a feed port 5, and the other end is connected to the main mixing chamber 3. The feed scattering device 6 is arranged in the feed chamber 13, the nitrogen blowing device 1 is arranged in the feed chamber 13, the hydrochloric acid two-fluid atomizer 2 is arranged in the feed chamber 13, the stirrer 11 is arranged in the main mixing chamber 3, and the driving device is transmission-connected to the stirrer 11.

[0044] In the continuous starch acidification high-speed mixing equipment, the raw corn starch continuously enters the mixer body through the feed port 5; because the starch is unevenly distributed during the falling process, a feed scattering device 6 is set below the feed port 5 to initially scatter the starch, and a nitrogen blowing device 1 is set below the feed scattering device 6. The starch particles are thoroughly dispersed by nitrogen backblowing, and the Brownian motion of the starch particles is improved at the same time. The starch can be more evenly distributed in the falling space during the falling process. During the starch falling process, hydrochloric acid with a concentration of 3% to 4% is sprayed into the falling space through the hydrochloric acid two-fluid atomizer 2. The hydrochloric acid spray is fully mixed with the starch under a higher Brownian motion condition and falls into the main mixing chamber 3. A stirrer 11 is set inside the main mixing chamber 3. The stirrer 11 stirs and mixes the starch to fully mix the acidified starch. The evenly mixed acidified starch continuously enters the next process through the discharge port 9. The nitrogen blown in by the nitrogen dispersing device 1 and the air sprayed in by the two-fluid atomizer enter the next process through the discharge port 9, and are finally discharged from the system by the dust removal fan of the next process.

[0045] The continuous starch acidification high-speed mixing equipment simultaneously has the functions of feed breaking up, nitrogen blowing, hydrochloric acid atomization, and high-speed online mixing. By using the continuous starch acidification high-speed mixing equipment for acidification mixing, the formation of carbonized black particles is significantly reduced, the subsequent decolorization cost is reduced, the dextrin conversion rate and the overall yield are improved, thereby reducing the production cost.

[0046] In this embodiment, a base 10 is disposed below the mixer body, and the base 10 is used to support the mixer body.

[0047] Optionally, the stirrer 11 includes a main shaft 4 and a plurality of stirrers, the plurality of stirrers are fixedly arranged on the main shaft 4, the main shaft 4 is rotatably arranged on the main mixing chamber 3, and both ends of the main shaft 4 are provided with nitrogen labyrinth seals, which are used to seal the gap between the main shaft 4 and the main mixing chamber 3. In order to prevent leakage of materials in the main mixing chamber 3, both ends of the main shaft 4 are provided with nitrogen labyrinth seals to seal the gap between the main shaft 4 and the main mixing chamber 3. Since the main shaft 4 needs to rotate at high speed, ordinary mechanical seals will generate heat, resulting in an increase in the temperature at the seal, and even a risk of fire, so a nitrogen labyrinth seal is used. This seal has nitrogen continuously introduced, and the air film can play a sealing role and reduce frictional heating. Since nitrogen is an inert gas, it is safer to use nitrogen as a sealing medium. The structure of the labyrinth seal is a prior art and will not be repeated here.

[0048] like Figure 1 As shown, nitrogen is supplied to the nitrogen labyrinth seal via a nitrogen seal inlet 12 .

[0049] Optionally, the main shaft 4 and the frying plate are both made of acid-resistant materials.

[0050] Optionally, the main shaft 4 can rotate at a speed of 500 to 1000 revolutions per minute. The installation angle of the stir-fry plate varies according to the design purpose inside the main mixing chamber 3 .

[0051] In this embodiment, the stir-frying plates on the main shaft 4 are divided into multiple rows along the circumferential direction of the main shaft, each row of stir-frying plates includes multiple stir-frying plates, and the multiple stir-frying plates in each row are arranged at intervals along the extension direction of the main shaft 4. The stir-frying plates can be divided into 4-8 rows, preferably 4 rows of stir-frying plates are arranged, and the positions of the multiple stir-frying plates in each two adjacent rows correspond to each other.

[0052] Optionally, the driving device includes a driving motor 8 and a transmission structure 7, and the driving motor 8 is connected to the main shaft 4 through the transmission structure 7. The driving motor 8 is frequency-converting and can adjust the speed according to actual needs. Since the speed of the equipment is high, the processing accuracy requirements of the main shaft 4 and the installation requirements of the stir-frying plate are high.

[0053] Optionally, there are multiple hydrochloric acid two-fluid atomizers 2, and multiple hydrochloric acid two-fluid atomizers 2 are arranged at intervals. The two-fluid atomizer is a type of airflow atomizer, and the central tube passes through the liquid nozzle, that is, the liquid nozzle, and the compressed air is ejected from the annular gap after passing through the gas distributor. When the gas-liquid two-phase flow contacts the nozzle outlet end face, since the gas flow velocity ejected from the annular gap is generally 200 to 340 m / s, and the liquid outflow velocity generally does not exceed 2 m / s, there is a large relative velocity between the two fluids, thereby generating a considerable friction force to atomize the liquid.

[0054] Optionally, there are multiple nitrogen gas blowing devices 1, and the multiple nitrogen gas blowing devices 1 are arranged at intervals.

[0055] The present invention also provides a continuous starch acidification high-speed mixing method, using the above-mentioned continuous starch acidification high-speed mixing device, comprising:

[0056] Starch is continuously fed into the feed cavity 13 through the feed port 5 .

[0057] The starch is dispersed by the feed dispersing device 6. Since the starch is unevenly distributed during the falling process, a feed dispersing device 6 is designed below the feed inlet 5 to preliminarily disperse the starch.

[0058] The nitrogen is blown in the direction opposite to the direction of starch movement through the nitrogen blowing device 1 to disperse the starch thoroughly. Three nitrogen blowing devices 1 are designed below the feed dispersing device 6 to disperse the starch particles thoroughly through nitrogen backblowing, while increasing the Brownian motion of the starch particles, so that the starch can be more evenly distributed in the falling space during the falling process.

[0059] Hydrochloric acid is sprayed into the feed cavity 13 through the hydrochloric acid two-fluid atomizer 2 to fully mix the hydrochloric acid with the starch. The hydrochloric acid mist and the starch are fully mixed under a relatively high Brownian motion condition.

[0060] The starch falls into the main mixing chamber 3 and is stirred and mixed by the stirrer 11. The stirrer 11 made of acid-resistant material is arranged inside the main mixing chamber 3, and its main shaft 4 is driven by the driving motor 8 to rotate at a high speed of 500 to 1000 revolutions per minute to fully mix the acidified starch.

[0061] Optionally, the main shaft 4 of the stirrer 11 is monitored for vibration online in real time. Since the main shaft 4 rotates at a high speed, real-time online vibration monitoring of the main shaft 4 can well monitor the operation of the equipment. Once a fault occurs, the vibration becomes larger and exceeds the set value, the equipment will automatically shut down, which can play a protective role.

[0062] Optionally, the stirrer 11 is temperature monitored in real time. Real-time online temperature monitoring can play a protective role. Once a fault occurs, the main mixing chamber 3 rubs against the main shaft 4, and the temperature rises rapidly. When the high limit is reached, the device will automatically shut down.

[0063] The economic benefits of using the continuous starch acidification high-speed mixing equipment provided in this embodiment are:

[0064] After using the continuous starch acidification high-speed mixing equipment provided in this embodiment, the amount of carbonized black particles produced is reduced from 638.4 kg / day to 78.24 kg / day compared with the traditional process, a reduction of 87.74%. Under the same output, the cost of raw starch is saved by 481,000 yuan / year; the specific data are shown in Table 1:

[0065] Table 1: Comparison of carbonized black particle generation

[0066]

[0067] After using the continuous starch acidification high-speed mixing equipment provided in this embodiment, due to the reduction in the amount of carbonized black particles produced, the dry basis yield increased from the original 39.3% to 39.6% compared with the traditional process, and the dry basis yield increased by 0.3% overall. The specific data are shown in Table 2:

[0068] Table 2: Comparison of dry basis yield

[0069] Compare Projects Traditional crafts This embodiment improve Savings (10,000 yuan / year) Dry basis yield comparison % 39.3 39.6 0.3 52.0

[0070] After using the continuous starch acidification high-speed mixing equipment provided in this embodiment, the resistant dextrin content is increased from 50% to 53% compared with the traditional process at the same whiteness of 65, and the resistant dextrin conversion rate is increased by 3%. Under the condition of the original output remaining unchanged, the cost of raw starch is saved by 3.64 million yuan / year; the specific data are shown in Table 3: (The lower the whiteness, the higher the dextrin conversion rate, but the higher the whiteness, the higher the load of the later decolorization process.)

[0071] Table 3: Comparison of resistant dextrin content at the same whiteness

[0072]

[0073] After using the continuous starch acidification high-speed mixing equipment provided in this embodiment, the starch acidification is fully mixed, the amount of carbonized black particles produced is reduced, and the whiteness of dextrinized starch can be increased at the same dextrin conversion rate. The color value ABS of the material entering the carbon column decolorization system is reduced from the original 7.5 to 5.8 compared with the traditional process, and the color value is reduced by 22.67%; through actual data evaluation, the unit consumption of granular activated carbon is reduced from the original 40 kg / ton to 27.6 kg / ton, and the unit consumption is reduced by 30.91%, and the cost of activated carbon is saved by 2.17 million yuan / year; after the color is reduced, the frequency of carbon column carbon pressing is reduced, and the cost of desalted water consumption is reduced by 8,000 yuan / year. The specific data are shown in Table 4:

[0074] Table 4: Comparison of resistant dextrin content at the same whiteness

[0075]

[0076] Comprehensively calculated, the use of the continuous starch acidification high-speed mixing equipment provided in this embodiment can achieve a production cost saving of 6.338 million yuan per year, with considerable economic benefits.

[0077] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A continuous starch acidification high-speed mixing device, characterized in that: include: The mixer body is provided with a main mixing chamber (3) and a feed chamber (13); one end of the feed chamber (13) is provided with a feed port (5), and the other end is connected to the main mixing chamber (3); A feed material breaking up device (6), wherein the feed material breaking up device (6) is arranged in the feed cavity (13); A nitrogen blowing device (1), wherein the nitrogen blowing device (1) is arranged in the feed cavity (13); A hydrochloric acid two-fluid atomizer (2), wherein the hydrochloric acid two-fluid atomizer (2) is arranged in the feed cavity (13); A stirrer (11) and a driving device, wherein the stirrer (11) is arranged in the main mixing chamber (3), and the driving device is connected to the stirrer (11) in a transmission manner.

2. The continuous starch acidification high-speed mixing device according to claim 1, characterized in that: The stir-frying plate stirrer (11) comprises a main shaft (4) and a plurality of stir-frying plates, wherein the plurality of stir-frying plates are fixedly arranged on the main shaft (4), and the main shaft (4) is rotatably arranged in the main mixing chamber (3). Both ends of the main shaft (4) are provided with nitrogen labyrinth seals, and the nitrogen labyrinth seals are used to seal the gap between the main shaft (4) and the main mixing chamber (3).

3. The continuous starch acidification high-speed mixing device according to claim 2, characterized in that: The main shaft (4) and the frying plate are both made of acid-resistant materials.

4. The continuous starch acidification high-speed mixing device according to claim 2, characterized in that: The main shaft (4) can rotate at a speed of 500 to 1000 revolutions per minute.

5. The continuous starch acidification high-speed mixing device according to claim 2, characterized in that: The driving device comprises a driving motor (8) and a transmission structure (7), and the driving motor (8) is drivingly connected to the main shaft (4) via the transmission structure (7).

6. The continuous starch acidification high-speed mixing device according to claim 1, characterized in that: The number of the hydrochloric acid two-fluid atomizers (2) is multiple, and the multiple hydrochloric acid two-fluid atomizers (2) are arranged at intervals.

7. The continuous starch acidification high-speed mixing device according to claim 1, characterized in that: The number of the nitrogen blowing devices (1) is plural, and the plural nitrogen blowing devices (1) are arranged at intervals.

8. A continuous starch acidification high-speed mixing method, characterized in that: The continuous starch acidification high-speed mixing device according to any one of claims 1 to 7 comprises: The starch is continuously fed into the feed cavity (13) through the feed port (5); The starch is dispersed by a feed dispersing device (6); Blowing nitrogen in a direction opposite to the direction of starch movement through a nitrogen blowing device (1) to thoroughly disperse the starch; Spraying hydrochloric acid into the feed cavity (13) through a hydrochloric acid two-fluid atomizer (2) to fully mix the hydrochloric acid with the starch; The starch falls into the main mixing chamber (3) and is stirred and mixed by the stirrer (11).

9. The continuous starch acidification high-speed mixing device according to claim 1, characterized in that: The main shaft (4) of the stirrer (11) is monitored for vibration online in real time.

10. The continuous starch acidification high-speed mixing device according to claim 1, characterized in that: The temperature of the stirrer (11) is monitored in real time.

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