Continuous cereal composite enzymolysis production system

Abstract

The utility model discloses a continuous cereal composite enzymatic hydrolysis production system, and relates to the field of rice flour enzymatic hydrolysis, a material emulsifying device is respectively connected with a slurry mixing tank and a slurry storage tank, and a jet liquefying device is respectively connected with the slurry storage tank, an amylase storage tank and an enzymatic hydrolysis constant temperature device; the jet liquefying device is used for heating emulsified slurry and amylase by using high-pressure steam to obtain enzymolysis liquefied slurry, the enzyme deactivation device is connected with the enzymolysis constant temperature device, the mixed slurry cooking device is connected with the enzyme deactivation device through a first proportional valve, and the mixed slurry cooking device is connected with the slurry storage tank through a second proportional valve. The spraying liquefying device enables the slurry to cross over a high-viscosity section to obtain liquefied enzymolysis slurry, so that the problem that the conveying is influenced by slurry gelatinization and blockage caused by heating enzymolysis is solved; the enzymolysis temperature is higher than the gelatinization temperature, so that the enzymolysis efficiency is improved; the mixed slurry cooking device is used for mixing enzyme-deactivated liquefied slurry and non-amylase enzymolysis slurry in different proportions, so that the gradient adjustment of the enzymolysis degree under the condition of the same enzymolysis parameter is realized, and the gradient enzymolysis cereal powder is quickly and flexibly obtained.

Description

Technical Field

[0001] This application relates to the field of rice flour enzymatic hydrolysis, and in particular to a continuous grain compound enzymatic hydrolysis production system. Background Technology

[0002] Infants and the elderly have lower intestinal amylase activity and limited digestive and absorptive capacity, making them prone to bloating. Infants, in particular, have limited stomach capacity, and infant rice cereal generally has a low energy density after preparation. Although infants may feel full, their actual energy intake may still be insufficient to meet their normal growth and development needs. Therefore, many cereal powders, such as infant rice cereal and cereal powders suitable for the elderly, now employ enzymatic hydrolysis technology. In this process, large rice starch molecules are broken down into smaller dextrin molecules and a small amount of sugar, thereby improving digestibility and energy density.

[0003] Existing enzymatic hydrolysis processes for rice flour are mostly carried out in enzymatic hydrolysis tanks. First, the enzyme preparation slurry is transported to the tank, then heated to the hydrolysis temperature and held at that temperature for a certain period. Finally, it is transferred to an enzyme inactivation tank for further inactivation. Wheat starch and rice starch slurries typically begin to gelatinize at around 55°C, leading to material blockage and impeded transport. However, efficient enzymatic hydrolysis requires temperatures reaching or even exceeding the gelatinization temperature of starch. This results in extremely low efficiency for rice flour hydrolyzed below the gelatinization temperature. Furthermore, the complex control of hydrolysis parameters during production makes it difficult to quickly and flexibly switch between different hydrolysis gradients to obtain grain flour.

[0004] Therefore, how to effectively avoid material blockage, improve enzymatic hydrolysis efficiency, and quickly and flexibly obtain gradient enzymatically hydrolyzed grain powder are problems that need to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a continuous grain compound enzymatic hydrolysis production system to solve the problems of slurry gelatinization caused by heated enzymatic hydrolysis, material blockage affecting conveying, low enzymatic hydrolysis efficiency, and inability to quickly and flexibly switch to obtain grain powder of various enzymatic hydrolysis gradients.

[0006] To solve the above-mentioned technical problems, this application provides a continuous grain compound enzymatic hydrolysis production system, including: a slurry preparation tank, a material emulsification device, a slurry storage tank, an amylase storage tank, a jet liquefaction device, an enzymatic hydrolysis constant temperature device, an enzyme inactivation device, a mixed slurry cooking device, a first metering valve, and a second metering valve.

[0007] The mixing tank is connected to the material emulsification device, which is connected to the storage tank. The material emulsification device is used to emulsify the slurry to obtain an emulsified slurry. The jet liquefaction device is connected to the storage tank, the amylase storage tank, and the enzymatic hydrolysis constant temperature device. The jet liquefaction device uses high-pressure steam to heat the emulsified slurry and amylase to obtain an enzymatically hydrolyzed liquefied slurry. The enzyme inactivation device is connected to the enzymatic hydrolysis constant temperature device. The mixed slurry cooking device is connected to the enzyme inactivation device via the first metering valve. The mixed slurry cooking device is connected to the storage tank via the second metering valve. The mixed slurry cooking device is used to quantitatively mix the enzyme-inactivated liquefied slurry and the emulsified slurry that has not been hydrolyzed by amylase and cook them to obtain a pregelatinized mixed slurry.

[0008] In an optional embodiment, the system further includes a protease storage tank and a grain powder feeding device, both of which are connected to the slurry mixing tank. A third metering valve is provided on the pipeline connecting the protease storage tank and the slurry mixing tank, and a fourth metering valve is provided on the pipeline connecting the grain powder feeding device and the slurry mixing tank. The slurry mixing tank is used to mix the protease, materials, and water to obtain a slurry.

[0009] In an optional embodiment, a roller device is further included, which is connected to the mixed slurry cooking device. The roller device is used to dry and pulverize the pregelatinized mixed slurry to obtain a compound enzymatically hydrolyzed grain powder.

[0010] In one alternative embodiment, the material emulsification device is a high-shear emulsifier or a colloid mill.

[0011] In one optional embodiment, the high-shear emulsifier includes a working chamber, a motor, a main shaft, a stator, and a rotor. The motor is located at one end of the working chamber, and the main shaft, stator, and rotor are located inside the working chamber. The main shaft is connected to the rotor and the motor, respectively. The motor is used to drive the rotor to rotate so that the slurry is sheared, squeezed, and impacted in the gap between the stator and the rotor. The working chamber has an inlet and an outlet. The inlet is connected to the outlet of the slurry mixing tank, and the outlet is connected to the inlet of the slurry mixing tank and the slurry storage tank, respectively.

[0012] In one optional embodiment, the jet liquefaction device includes a gas chamber, a material chamber, a mixing tube, a lead screw, a needle valve core, and a nozzle. One end of the gas chamber is provided with the nozzle, which is located within the material chamber. One end of the mixing tube communicates with the material chamber. The lead screw is inserted into the gas chamber via its other end. The needle valve core is threadedly connected to the lead screw. Rotation of the lead screw causes the needle valve core to move axially along the lead screw. The needle valve core is used to insert into or move away from the inner hole of the nozzle to change the opening size of the nozzle. The gas chamber has a first steam inlet, the material chamber has a material inlet, and the other end of the mixing tube is a liquefied slurry outlet. The material inlet is connected to the amylase storage tank and the slurry storage tank, respectively. The liquefied slurry outlet is connected to the enzymatic hydrolysis constant temperature device.

[0013] In one optional embodiment, the enzymatic hydrolysis constant temperature device includes a first heating device, an enzymatic hydrolysis tank, and a first spiral coil disposed within the enzymatic hydrolysis tank. The enzyme inactivation device includes a second heating device, an enzyme inactivation tank, and a second spiral coil disposed within the enzyme inactivation tank. Both the enzymatic hydrolysis tank and the enzyme inactivation tank are provided with a heat transfer medium. The first spiral coil is connected to the jet liquefaction device and the second spiral coil, respectively. The second spiral coil is connected to the mixed slurry cooking device.

[0014] In one optional embodiment, the mixed slurry cooking device includes a cylinder and a spiral screw disposed within the cylinder. One end of the cylinder is provided with a slurry outlet, and the side wall of the cylinder is provided with a slurry inlet and a second steam inlet. The slurry outlet is connected to the drum device, and the slurry inlet is connected to the slurry storage tank and the enzyme inactivation device, respectively.

[0015] In one optional embodiment, the drum device includes a steam hood, a feeding pipe, a spreading roller, a steam drum, a scraper, a trough, and a crushing auger. The steam hood is located above the steam drum and is used to draw steam generated by the steam drum. One end of the feeding pipe is connected to the mixing slurry cooking device, and the other end of the feeding pipe faces the gap between the spreading roller and the steam drum. The spreading roller and the steam drum rotate to evenly distribute the slurry on the steam drum. The scraper abuts against the circumferential surface of the steam drum. The trough is located below the scraper. The crushing auger is disposed in the trough. The scraper is used to scrape the dried material on the surface of the steam drum into the trough, and the crushing auger is used to crush the material in the trough.

[0016] In one optional embodiment, both the mixing tank and the storage tank are equipped with a stirring device, which includes a stirring motor, a stirring shaft, and stirring blades. The stirring motor is connected to the stirring shaft, and the stirring blades are disposed on the stirring shaft.

[0017] This application provides a continuous grain compound enzymatic hydrolysis production system, comprising: a slurry preparation tank, a material emulsification device, a slurry storage tank, an amylase storage tank, a jet liquefaction device, an enzymatic hydrolysis constant temperature device, an enzyme inactivation device, a mixed slurry cooking device, a first quantitative valve, and a second quantitative valve. The slurry preparation tank is connected to the material emulsification device, which is connected to the slurry storage tank. The material emulsification device is used to emulsify the slurry to obtain an emulsified slurry. The jet liquefaction device is connected to the slurry storage tank, the amylase storage tank, and the enzymatic hydrolysis constant temperature device. The jet liquefaction device uses high-pressure steam to heat the emulsified slurry and amylase to obtain an enzymatically hydrolyzed liquefied slurry. The enzyme inactivation device is connected to the enzymatic hydrolysis constant temperature device. The mixed slurry cooking device is connected to the enzyme inactivation device via the first quantitative valve, and to the slurry storage tank via the second quantitative valve. The mixed slurry cooking device is used to quantitatively mix and cook the enzyme-inactivated liquefied slurry and the un-enzymatically hydrolyzed emulsified slurry to obtain a pre-gelatinized mixed slurry. The jet liquefaction device allows the slurry to pass through the high-viscosity section, resulting in a liquefied enzymatically hydrolyzed slurry. This solves the problems of gelatinization and material blockage affecting conveying caused by temperature-increased enzymatic hydrolysis. Furthermore, the hydrolysis temperature is higher than the gelatinization temperature, requiring less enzyme, shortening the hydrolysis time, and achieving a higher degree of hydrolysis, thus improving hydrolysis efficiency. The mixed slurry cooking device quantitatively mixes different proportions of enzyme-inactivated liquefied slurry and unhydrolyzed slurry, enabling gradient adjustment of the degree of hydrolysis (measured by DE value) of the grain powder under the same hydrolysis parameters, quickly and flexibly obtaining gradient-hydrolyzed grain powder. This gradient-hydrolyzed grain powder, after being prepared in different proportions, can achieve the same viscosity but different energy densities, precisely suited for groups of different ages with varying stomach capacities and energy density requirements. In addition, by adding protease to the slurry conditioning tank, the viscosity of the slurry is rapidly reduced, the water used in the conditioning process is reduced, the solid content of the slurry is increased, the risk of material blockage is reduced, and the energy consumption required for subsequent roller drying and evaporation of moisture is reduced. The slurry conditioning tank is connected to the high-shear emulsifier for internal circulation, which helps to make the slurry uniform and fine, and prevents stratification caused by protein dissolution. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A structural diagram of a continuous grain compound enzymatic hydrolysis production system provided in this application embodiment;

[0020] Figure 2 A structural diagram of a high-shear emulsifier provided in an embodiment of this application;

[0021] Figure 3A structural diagram of a jet liquefaction device provided in an embodiment of this application;

[0022] Figure 4 A structural diagram of a mixed slurry cooking apparatus provided in an embodiment of this application;

[0023] Figure 5 This is a structural diagram of a roller device provided in an embodiment of this application.

[0024] The attached diagram is labeled as follows: 1-Slurry mixing tank, 2-Material emulsification device, 3-Slurry storage tank, 4-Amylase storage tank, 5-Jet liquefaction device, 6-Enzymatic hydrolysis constant temperature device, 7-Enzyme inactivation device, 8-Mixed slurry cooking device, 9-Protein storage tank, 10-Grain powder feeding device, 11-Drum device, 12-Agitator motor, 13-Agitator shaft, 14-Agitator blades, 201-Working chamber, 202-Motor, 203-Main shaft, 204-Stator, 205-Rotor, 206-Inlet, 207-Outlet, 501-Gas 502-Material cavity, 503-Mixing pipe, 504-Screw, 505-Needle valve core, 506-Nozzle, 507-First steam inlet, 508-Material inlet, 509-Liquefied slurry outlet, 801-Cylinder, 802-Screw, 803-Slurry outlet, 804-Slurry inlet, 805-Second steam inlet, 1101-Steam hood, 1102-Discharge pipe, 1103-Material roller, 1104-Steam drum, 1105-Scraper, 1106-Material trough, 1107-Crushing auger. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0026] The core of this application is to provide a continuous grain compound enzymatic hydrolysis production system, which effectively avoids material blockage, improves enzymatic hydrolysis efficiency, and rapidly and flexibly obtains graded enzymatically hydrolyzed grain powder.

[0027] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 A structural diagram of a continuous grain compound enzymatic hydrolysis production system provided in this application embodiment is shown below. Figure 1As shown, the continuous grain compound enzymatic hydrolysis production system includes: a slurry preparation tank 1, a material emulsification device 2, a slurry storage tank 3, an amylase storage tank 4, a jet liquefaction device 5, an enzymatic hydrolysis constant temperature device 6, an enzyme inactivation device 7, a mixed slurry cooking device 8, a first metering valve, and a second metering valve; the slurry preparation tank 1 is connected to the material emulsification device 2, and the material emulsification device 2 is connected to the slurry storage tank 3. The material emulsification device 2 is used to emulsify the slurry to obtain emulsified slurry. The jet liquefaction device 5 is connected to the slurry storage tank 3 and the amylase storage tank 4. Tank 4 and enzymatic hydrolysis constant temperature device 6, jet liquefaction device 5 use high pressure steam to heat emulsified slurry and amylase to obtain enzymatic hydrolyzed liquefied slurry, enzyme inactivation device 7 is connected to enzymatic hydrolysis constant temperature device 6, mixed slurry cooking device 8 is connected to enzyme inactivation device 7 via first quantitative valve, mixed slurry cooking device 8 is connected to slurry storage tank 3 via second quantitative valve, mixed slurry cooking device 8 is used to quantitatively mix and cook enzyme-inactivated liquefied slurry and unhydrolyzed emulsified slurry to obtain pregelatinized mixed slurry.

[0029] This application does not specifically limit the shape and size of the mixing tank 1. The mixing tank 1 mainly mixes the protease, materials, and water to obtain a slurry. Based on this, a stirring device can be provided for the mixing tank 1. The stirring device includes a stirring motor 12, a stirring shaft 13, and stirring blades 14. Figure 1 As shown, the first end of the stirring shaft 13 is inserted into the mixing tank 1 through the top of the mixing tank 1, and the second end of the stirring shaft 13 is connected to the stirring motor 12. The stirring blades 14 are mounted on the stirring shaft 13 and located inside the mixing tank 1. Further, it may also include a protease storage tank 9 and a grain powder feeding device 10. Both the protease storage tank 9 and the grain powder feeding device 10 are connected to the mixing tank 1. A third metering valve is provided on the pipeline connecting the protease storage tank 9 and the mixing tank 1, and a fourth metering valve is provided on the pipeline connecting the grain powder feeding device 10 and the mixing tank 1. The mixing tank 1 is used to mix the protease, materials, and water to obtain a slurry. The protease storage tank 9 is used to prepare and temporarily store protease to obtain a protease solution with a certain enzyme activity. The grain powder feeding device 10 is mainly used to transport materials to the mixing tank 1. The materials mainly include any one or a combination of rice, millet, wheat, and corn, as well as any one or a combination of fruit and vegetable powder, fruit and vegetable juice, and nutrient fortifiers. Based on this, the grain powder feeding device 10 can also be connected to a dry mixing device, which is used to mix the above materials. A third metering valve is provided on the pipeline connecting the protease storage tank 9 and the mixing tank 1, and a fourth metering valve is provided on the pipeline connecting the grain powder feeding device 10 and the mixing tank 1. The opening degree of the third metering valve and the fourth metering valve can be adjusted respectively, thereby adjusting the protease delivery flow rate and the material delivery flow rate, and thus adjusting the ratio of protease to material.

[0030] This application does not specifically limit the material emulsification device 2, which can be a high-shear emulsifier or a colloid mill. The material emulsification device 2 is mainly used to efficiently and uniformly disperse multiphase materials into a continuous phase to form a stable emulsion, that is, to emulsify the slurry in the mixing tank 1 to obtain an emulsified slurry, thereby achieving the purpose of a uniform and fine slurry.

[0031] The specific structure of a high-shear emulsifier is described below. Figure 2 A structural diagram of a high-shear emulsifier provided in an embodiment of this application is shown below. Figure 2 As shown, the high-shear emulsifier includes a working chamber 201, a motor 202, a main shaft 203, a stator 204, and a rotor 205. The motor 202 is located at one end of the working chamber 201. The main shaft 203, stator 204, and rotor 205 are located inside the working chamber 201. The main shaft 203 is connected to both the rotor 205 and the motor 202. The motor 202 drives the rotor 205 to rotate, causing the slurry to be sheared, squeezed, and impacted in the gap between the stator 204 and the rotor 205. The working chamber 201 has an inlet 206 and an outlet 207. The inlet 206 is connected to the outlet of the mixing tank 1, and the outlet 207 is connected to both the inlet of the mixing tank 1 and the storage tank 3. The outlet 207 can be connected to both the inlet of the mixing tank 1 and the storage tank 3 via a two-way valve. Process steps: The slurry is drawn into the working chamber 201 through the feed port 206. The stator 204 is fixed in the working chamber 201 and forms a precise fit with the rotor 205. The slurry is subjected to strong shearing, squeezing and impact in the gap between the stator 204 and the rotor 205, so as to achieve emulsification and homogenization. The emulsified slurry is then transported to the mixing tank 1 for mixing. After being sheared multiple times by the high-shear emulsifier, the emulsified slurry is transported to the storage tank 3.

[0032] This application embodiment does not specifically limit the shape and size of the slurry storage tank 3. The slurry storage tank 3 is used to temporarily store slurry to ensure continuous production. Of course, a stirring device can also be provided for the slurry storage tank 3 to ensure the uniformity of the emulsified slurry in the slurry storage tank 3. The stirring device includes a stirring motor 12, a stirring shaft 13, and stirring blades 14. The stirring motor 12 is connected to the stirring shaft 13, and the stirring blades 14 are disposed on the stirring shaft 13.

[0033] In this embodiment, the amylase storage tank 4 is used to prepare and temporarily store amylase to obtain an amylase solution with a certain enzyme activity. A fifth metering valve is provided on the pipeline connecting the amylase storage tank 4 and the jet liquefaction device 5, which facilitates the control of the amylase delivery flow rate. Alternatively, a sixth metering valve can be provided on the pipeline connecting the slurry tank 3 and the jet liquefaction device 5. The amylase includes any one or a combination of α-amylase, β-amylase, and glucosylase.

[0034] The jet liquefaction device 5 in this embodiment is used to quantitatively mix slurry and amylase, and to expel the slurry past its gelatinization point in a short time using high-pressure steam, thereby obtaining enzymatically hydrolyzed liquefied slurry. Figure 3 A structural diagram of a jet liquefaction device 5 provided in an embodiment of this application is shown below. Figure 3 As shown, the jet liquefaction device 5 includes a gas chamber 501, a material chamber 502, a mixing pipe 503, a lead screw 504, a needle valve core 505, and a nozzle 506. One end of the gas chamber 501 is equipped with the nozzle 506, which is located inside the material chamber 502. One end of the mixing pipe 503 communicates with the material chamber 502. The lead screw 504 is inserted into the gas chamber 501 through its other end. The needle valve core 505 is threadedly connected to the lead screw 504. Rotation of the lead screw 504 causes the needle valve core to... The core 505 moves axially along the lead screw 504. The needle valve core 505 is used to insert into or move away from the inner hole of the nozzle 506 to change the opening size of the nozzle 506. The gas chamber 501 is provided with a first steam inlet 507, and the material chamber 502 is provided with a material inlet 508. The other end of the mixing pipe 503 is a liquefied slurry outlet 509. The material inlet 508 is connected to the amylase storage tank 4 and the slurry storage tank 3 respectively, and the liquefied slurry outlet 509 is connected to the enzymatic hydrolysis constant temperature device 6. The material inlet 508 can be connected to the amylase storage tank 4 and the slurry storage tank 3 respectively through a two-way valve. Process steps: The emulsified slurry containing amylase is pumped into the material chamber 502 through the material inlet 508. Steam enters the gas chamber 501 through the first steam inlet 507 and is injected into the material chamber 502 through the nozzle 506, generating a high-speed vortex to fully cut and disperse the enzyme-added slurry. It then enters the mixing tube 503 for thorough mixing and saccharification, and finally enters the enzymatic hydrolysis constant temperature device 6 through the liquefied slurry outlet 509. The needle valve core 505 and the lead screw 504 work together to control the flow rate and pressure of the liquid, achieving the required liquefaction temperature and liquefaction effect. Specifically, the front end of the needle valve core 505 is usually designed as a cone or other shape, which mates with the inner hole of the nozzle 506. When the valve core moves forward, the opening of the nozzle 506 decreases; when the valve core moves backward, the opening of the nozzle 506 increases. As the valve core moves forward (inserting into nozzle 506), the opening decreases: The front end of the valve core gradually inserts into the inner hole of nozzle 506, reducing the effective opening area of ​​nozzle 506. With a smaller opening, the passage of fluid through nozzle 506 narrows, and the flow rate decreases accordingly. According to fluid mechanics principles, when the opening decreases, the velocity of the fluid through nozzle 506 increases, and the pressure also rises accordingly. As the valve core moves backward (leaving nozzle 506), the opening increases: The front end of the valve core gradually leaves the inner hole of nozzle 506, increasing the effective opening area of ​​nozzle 506. With a larger opening, the passage of fluid through nozzle 506 widens, and the flow rate increases accordingly. When the opening increases, the velocity of the fluid through nozzle 506 decreases, and the pressure also decreases accordingly.

[0035] This application embodiment does not limit the specific structure of the enzymatic hydrolysis constant temperature device 6 and the enzyme inactivation device 7. The enzymatic hydrolysis constant temperature device 6 is used to maintain a constant temperature for further enzymatic hydrolysis, resulting in a liquefied slurry with a higher degree of enzymatic hydrolysis. The enzyme inactivation device 7 is used to inactivate the enzymes in the enzymatically hydrolyzed slurry by raising the temperature, resulting in an enzyme-inactivated liquefied slurry. Specifically, the enzymatic hydrolysis constant temperature device 6 includes a first heating device, an enzymatic hydrolysis tank, and a first spiral coil disposed within the enzymatic hydrolysis tank. The enzyme inactivation device 7 includes a second heating device, an enzyme inactivation tank, and a second spiral coil disposed within the enzyme inactivation tank. Both the enzymatic hydrolysis tank and the enzyme inactivation tank are equipped with a heat transfer medium. The first spiral coil is connected to the jet liquefaction device 5 and the second spiral coil, respectively. The second spiral coil is connected to the mixed slurry cooking device 8. This application embodiment does not specifically limit the first heating device and the second heating device; they can be electric heating devices or steam heating devices, etc. By setting the first spiral coil and the second spiral coil, both enzymatic hydrolysis and enzyme inactivation are pipeline-type. Compared to enzymatic hydrolysis tanks, where the tank has a certain volume, there is a time difference between the sequential feeding and discharging of materials from the same tank, resulting in different degrees of enzymatic hydrolysis for materials fed in and out at different times. In addition, the feeding and discharging of materials in the tank takes a certain amount of time, making it impossible to achieve precise control over the degree of enzymatic hydrolysis. The pipeline-type enzymatic hydrolysis system of this application reduces the time difference between feeding and discharging, improves the difference in the degree of enzymatic hydrolysis, and thus achieves precise control over the degree of enzymatic hydrolysis.

[0036] In this embodiment, the mixed slurry cooking device 8 is used to quantitatively mix the enzyme-inactivated liquefied slurry with the emulsified slurry in the storage tank 3 that has not been hydrolyzed by amylase, and then cook and pregelatinize the mixture with high-pressure steam to obtain a pregelatinized mixed slurry. Figure 4 A structural diagram of a mixed slurry cooking apparatus 8 provided in an embodiment of this application is shown below. Figure 4 As shown, the mixed slurry cooking device 8 includes a cylinder 801 and a screw 802 disposed inside the cylinder 801. One end of the cylinder 801 has a slurry outlet 803, and the side wall of the cylinder 801 has a slurry inlet 804 and a second steam inlet 805. The slurry outlet 803 is connected to the drum assembly 11, and the slurry inlet 804 is connected to the storage tank 3 and the enzyme inactivation device 7, respectively. Process steps: The mixed slurry (enzyme-inactivated liquefied slurry and un-amylase-hydrolyzed emulsified slurry) is pumped into the cylinder 801 through the slurry inlet 804. Steam entering through the second steam inlet 805 is fully contacted and mixed under the action of the screw 802, and then sprayed into the drum assembly 11 through the slurry outlet 803 via a pipeline. Figure 4 As shown, a column is provided inside the cylinder 801, and a spiral screw 802 is spirally wound along the axial direction of the column. The spiral screw 802 can guide the flow direction of slurry and steam in the cylinder, so that it moves along the spiral path, thereby reducing the short-circuiting phenomenon and dead flow angle of the fluid, and ensuring that the slurry and steam are fully mixed and evenly distributed.

[0037] The mixed slurry cooking device 8 is connected to the enzyme inactivation device 7 via a first metering valve, and to the slurry storage tank 3 via a second metering valve. The flow rates of the enzyme-inactivated liquefied slurry and the un-amylase-hydrolyzed emulsified slurry can be adjusted by changing the opening degrees of the first and second metering valves, thereby controlling the ratio of enzyme-inactivated liquefied slurry to un-amylase-hydrolyzed emulsified slurry in the mixed slurry cooking device 8. This allows for gradient adjustment of the degree of hydrolysis (DE value) of the grain powder under the same enzymatic hydrolysis parameters, enabling rapid and flexible production of gradient-hydrolyzed grain powder. This gradient-hydrolyzed grain powder, when prepared in different proportions, can achieve the same viscosity but different energy densities, precisely suited for different age groups with varying stomach capacities and energy density requirements. Rice noodles that have undergone enzymatic hydrolysis have significantly reduced viscosity because the starch molecules are broken down into smaller molecules such as starch, dextrin, and small sugars. Therefore, with the same amount of water, more rice noodles can be added to the enzymatically hydrolyzed rice noodles without gelatinizing and clumping. However, regular rice noodles can only be mixed with a small amount of rice noodles, otherwise they will not dissolve properly and will clump together.

[0038] Furthermore, it also includes a drum device 11, which is connected to the mixed slurry cooking device 8. The drum device 11 is used to dry and pulverize the pregelatinized mixed slurry to obtain compound enzymatically hydrolyzed grain powder. Figure 5 This is a structural diagram of a roller device 11 provided in an embodiment of this application, as shown below. Figure 5As shown, the drum device 11 includes a steam hood 1101, a feed pipe 1102, a cloth roller 1103, a steam drum 1104, a scraper 1105, a trough 1106, and a crushing auger 1107. The steam hood 1101 is located above the steam drum 1104 and is used to draw steam generated by the steam drum 1104. One end of the feed pipe 1102 is connected to the mixed slurry cooking device 8, and the other end of the feed pipe 1102 faces the cloth roller 1103 and the steam drum. The gap between 1104 allows the feeding roller 1103 and the steam drum 1104 to rotate and evenly distribute the slurry on the steam drum 1104. The scraper 1105 abuts against the circumferential surface of the steam drum 1104. The trough 1106 is located below the scraper 1105. The crushing auger 1107 is located inside the trough 1106. The scraper 1105 is used to scrape the dried material on the surface of the steam drum 1104 into the trough 1106. The crushing auger 1107 is used to crush the material in the trough 1106. Process steps: The pre-gelatinized mixed slurry is sprayed from the feed pipe 1102 into the gap between the steam drum 1104 and the spreading roller 1103. Through the rotation of the steam drum 1104 and the spreading roller 1103, the slurry is evenly distributed on the steam drum 1104. The heat of the steam drum 1104 dries the slurry. The generated steam is drawn through the steam hood 1101 to reduce the temperature and humidity of the space. The material that has been dried to the qualified moisture content on the steam drum 1104 is scraped into the material trough 1106 by the scraper 1105. The crushing auger 1107 in the material trough 1106 crushes the large pieces of material into small pieces, thus obtaining the compound enzymatic hydrolyzed grain powder.

[0039] This application provides a continuous grain compound enzymatic hydrolysis production system, comprising: a slurry preparation tank, a material emulsification device, a slurry storage tank, an amylase storage tank, a jet liquefaction device, an enzymatic hydrolysis constant temperature device, an enzyme inactivation device, a mixed slurry cooking device, a first quantitative valve, and a second quantitative valve. The slurry preparation tank is connected to the material emulsification device, which is connected to the slurry storage tank. The material emulsification device is used to emulsify the slurry to obtain an emulsified slurry. The jet liquefaction device is connected to the slurry storage tank, the amylase storage tank, and the enzymatic hydrolysis constant temperature device. The jet liquefaction device uses high-pressure steam to heat the emulsified slurry and amylase to obtain an enzymatically hydrolyzed liquefied slurry. The enzyme inactivation device is connected to the enzymatic hydrolysis constant temperature device. The mixed slurry cooking device is connected to the enzyme inactivation device via the first quantitative valve, and to the slurry storage tank via the second quantitative valve. The mixed slurry cooking device is used to quantitatively mix and cook the enzyme-inactivated liquefied slurry and the un-enzymatically hydrolyzed emulsified slurry to obtain a pre-gelatinized mixed slurry. The jet liquefaction device allows the slurry to pass through the high-viscosity section, resulting in a liquefied enzymatically hydrolyzed slurry. This solves the problems of gelatinization and material blockage affecting conveying caused by temperature-increased enzymatic hydrolysis. Furthermore, the hydrolysis temperature is higher than the gelatinization temperature, requiring less enzyme, shortening the hydrolysis time, and achieving a higher degree of hydrolysis, thus improving hydrolysis efficiency. The mixed slurry cooking device quantitatively mixes different proportions of enzyme-inactivated liquefied slurry and unhydrolyzed slurry, enabling gradient adjustment of the degree of hydrolysis (measured by DE value) of the grain powder under the same hydrolysis parameters, quickly and flexibly obtaining gradient-hydrolyzed grain powder. This gradient-hydrolyzed grain powder, after being prepared in different proportions, can achieve the same viscosity but different energy densities, precisely suited for groups of different ages with varying stomach capacities and energy density requirements.

[0040] In addition, by adding protease to the slurry conditioning tank, the viscosity of the slurry is rapidly reduced, the water used in the conditioning process is reduced, the solid content of the slurry is increased, the risk of material blockage is reduced, and the energy consumption required for subsequent roller drying and evaporation of moisture is reduced. The slurry conditioning tank is connected to the high-shear emulsifier for internal circulation, which helps to make the slurry uniform and fine, and prevents stratification caused by protein dissolution.

[0041] The above provides a detailed description of a continuous grain compound enzymatic hydrolysis production system. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims.

[0042] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A continuous system for the production of complex enzymatic hydrolysis of cereals, characterized by, The application relates to a starch liquefaction and enzyme hydrolysis device. The slurry mixing tank (1) is connected with the material emulsifying device (2), the material emulsifying device (2) is connected with the slurry storage tank (3), the material emulsifying device (2) is used for emulsifying slurry to obtain emulsified slurry, the jet liquefaction device (5) is connected with the slurry storage tank (3), the amylase storage tank (4) and the enzyme hydrolysis constant temperature device (6) respectively, the jet liquefaction device (5) is used for heating the emulsified slurry and amylase by using high-pressure steam to obtain enzyme hydrolysis liquefaction slurry, the enzyme inactivation device (7) is connected with the enzyme hydrolysis constant temperature device (6), the mixed slurry cooking device (8) is connected with the enzyme inactivation device (7) through the first quantitative valve, the mixed slurry cooking device (8) is connected with the slurry storage tank (3) through the second quantitative valve, and the mixed slurry cooking device (8) is used for quantitatively mixing and cooking the enzyme inactivated liquefaction slurry and the emulsified slurry which has not been subjected to amylase enzyme hydrolysis to obtain pre-gelatinized mixed slurry. The device further comprises a protease storage tank (9) and a grain powder feeding device (10), the protease storage tank (9) and the grain powder feeding device (10) are both connected with the slurry mixing tank (1), a third quantitative valve is arranged on the pipeline, through which the protease storage tank (9) is connected with the slurry mixing tank (1), a fourth quantitative valve is arranged on the pipeline, through which the grain powder feeding device (10) is connected with the slurry mixing tank (1), and the slurry mixing tank (1) is used for mixing protease, material and water to obtain slurry.

2. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The device further comprises a roller device (11), the roller device (11) is connected with the mixed slurry cooking device (8), and the roller device (11) is used for drying and crushing the pre-gelatinized mixed slurry to obtain composite enzyme hydrolysis grain powder.

3. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The material emulsifying device (2) is a high-shear emulsifier or a colloid mill.

4. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The high-shear emulsifier comprises a working cavity (201), a motor (202), a main shaft (203), a stator (204) and a rotor (205), the motor (202) is arranged at one end of the working cavity (201), the main shaft (203), the stator (204) and the rotor (205) are located in the working cavity (201), the main shaft (203) is connected with the rotor (205) and the motor (202) respectively, the motor (202) is used for driving the rotor (205) to rotate so that the slurry is subjected to shearing, extrusion and impact in the gap between the stator (204) and the rotor (205), the working cavity (201) is provided with a feeding port (206) and a discharging port (207), the feeding port (206) is connected with the outlet of the slurry mixing tank (1), and the discharging port (207) is connected with the inlet of the slurry mixing tank (1) and the slurry storage tank (3) respectively.

5. The continuous composite enzymatic hydrolysis production system of grain according to claim 4, characterized in that, ​ 6. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The injection liquefaction device (5) comprises a gas cavity (501), a material cavity (502), a mixing pipe (503), a lead screw (504), a needle valve spool (505) and a nozzle (506), one end of the gas cavity (501) is provided with the nozzle (506), the nozzle (506) is located in the material cavity (502), one end of the mixing pipe (503) is communicated with the material cavity (502), the lead screw (504) is inserted into the gas cavity (501) through the other end of the gas cavity (501), the needle valve spool (505) is threadedly connected with the lead screw (504), the rotation of the lead screw (504) makes the needle valve spool (505) move along the axial direction of the lead screw (504), the needle valve spool (505) is used for inserting or moving away from the inner hole of the nozzle (506) to change the opening size of the nozzle (506), the gas cavity (501) is provided with a first steam inlet (507), the material cavity (502) is provided with a material inlet (508), the other end of the mixing pipe (503) is a liquefied slurry outlet (509), the material inlet (508) is connected with the amylase storage tank (4) and the slurry storage tank (3) respectively, and the liquefied slurry outlet (509) is connected with the enzymolysis constant temperature device (6).

7. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The enzymolysis constant temperature device (6) comprises a first heating device, an enzymolysis tank and a first spiral coil pipe arranged in the enzymolysis tank, the enzyme inactivating device (7) comprises a second heating device, an enzyme inactivating tank and a second spiral coil pipe arranged in the enzyme inactivating tank, heat transfer medium is arranged in the enzymolysis tank and the enzyme inactivating tank, the first spiral coil pipe is connected with the injection liquefaction device (5) and the second spiral coil pipe respectively, and the second spiral coil pipe is connected with the mixed slurry cooking device (8).

8. The continuous composite enzymatic hydrolysis production system of grain according to claim 3, characterized in that, The mixed slurry cooking device (8) comprises a cylinder (801) and a spiral screw (802) arranged in the cylinder (801), one end of the cylinder (801) is provided with a slurry outlet (803), the side wall of the cylinder (801) is provided with a slurry inlet (804) and a second steam inlet (805), the slurry outlet (803) is connected with the rolling cylinder device (11), and the slurry inlet (804) is connected with the slurry storage tank (3) and the enzyme inactivating device (7) respectively.

9. The continuous composite enzymatic hydrolysis production system of grain according to claim 3, characterized in that, The drum device (11) comprises a steam cover (1101), a feeding pipe (1102), a cloth roller (1103), a steam drum (1104), a scraper (1105), a trough (1106) and a crushing auger (1107), the steam cover (1101) is located above the steam drum (1104), the steam cover (1101) is used for sucking steam generated by the steam drum (1104), one end of the feeding pipe (1102) is connected with the mixed pulp cooking device (8), the other end of the feeding pipe (1102) is directed to the gap between the cloth roller (1103) and the steam drum (1104), the cloth roller (1103) and the steam drum (1104) rotate to uniformly distribute the slurry on the steam drum (1104), the scraper (1105) abuts against the peripheral surface of the steam drum (1104), the trough (1106) is located below the scraper (1105), the crushing auger (1107) is arranged in the trough (1106), the scraper (1105) is used for scraping the dry material on the surface of the steam drum (1104) into the trough (1106), and the crushing auger (1107) is used for crushing the material in the trough (1106).

10. The continuous composite enzymatic hydrolysis production system of grain according to claim 1, characterized in that, The mixing tank (1) and the pulp storage tank (3) are each provided with a stirring device, the stirring device comprising a stirring motor (12), a stirring shaft (13) and stirring blades (14), the stirring motor (12) being connected with the stirring shaft (13), and the stirring blades (14) being arranged on the stirring shaft (13).

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