Continuous flow type infant rice flour enzymolysis device

Abstract

The utility model discloses a continuous flow type infant rice flour enzymolysis device which is characterized in that after primary mixing is carried out in a size mixing kettle to form starch water, the starch water is preheated and heated through a heating heat exchanger, and the heated starch water is mixed with quantitative enzyme in an enzyme adding tank to obtain a mixed enzyme material; the mixed enzyme material enters the heat exchange enzymolysis tubes and is rapidly heated to a proper enzymolysis temperature and is subjected to an enzymolysis reaction, the enzymolysis time is increased by one time when one group of heat exchange enzymolysis tubes is added, meanwhile, each group of enzymolysis tubes can control the enzymolysis temperature, and the characteristic of the biological enzyme is that the higher the temperature is within a certain temperature range, the higher the reaction rate of the enzyme is; the enzymolysis reaction time and the reaction temperature are controlled through multiple groups of heat exchange enzymolysis pipes, so that the enzymolysis reaction degree is controlled, after the enzymolysis reaction is finished, the temperature of the mixed liquid is rapidly increased to the inactivation temperature of enzyme through the enzyme inactivation device, the enzymolysis reaction is terminated, continuous enzymolysis reaction of the mixed liquid in the next procedure is avoided, and the enzymolysis efficiency is improved. And the whole enzymolysis reaction can realize channelized continuous production.

Description

Technical Field

[0001] This utility model relates to the field of food engineering technology, and in particular to a continuous flow enzymatic hydrolysis device for infant rice cereal. Background Technology

[0002] Infants' intestinal development is not yet complete, especially infants aged 6-12 months, whose digestive capacity is relatively poor. Therefore, partially enzymatically hydrolyzing infant rice cereal during the production process will help infants digest and absorb it.

[0003] Infant rice cereal can be hydrolyzed using enzymatic processes such as α-amylase, glucosylamylase, and protease to break down starch and protein macromolecules. However, controlling the degree of enzymatic hydrolysis to obtain suitable enzymatically hydrolyzed rice cereal is often difficult. The degree of enzymatic hydrolysis of rice cereal has a significant impact on the reconstitution properties, consistency, and taste of the rice cereal. For example, overly hydrolyzed rice cereal is often difficult to dry and has poor reconstitution properties and taste.

[0004] Currently, the typical enzymatic hydrolysis process for rice flour is as follows: rice flour is prepared into rice slurry in a reaction vessel, the rice slurry is heated to a suitable enzymatic hydrolysis temperature, enzymes are added, and the process is carried out for a certain period of time to complete the enzymatic hydrolysis. The enzymatically hydrolyzed rice slurry is then heated in the reaction vessel to inactivate the enzymes, and the rice slurry is dried after inactivation to obtain enzymatically hydrolyzed rice flour.

[0005] Existing enzymatic hydrolysis devices mostly use reaction vessels for enzymatic hydrolysis, controlling the enzymatic hydrolysis by controlling the temperature and reaction time of the reaction vessel. However, the material volume of a single reaction vessel is large, and the temperature control capability of the slurry preparation vessel is limited, making it impossible to flexibly control the temperature of the material. After the enzymatic hydrolysis is completed, the enzymes in the rice slurry cannot be inactivated in time, causing the enzymatic hydrolysis reaction to continue. It is impossible to accurately control the degree of enzymatic hydrolysis of rice flour, often resulting in over- or under-enzymatic hydrolysis of the product. Utility Model Content

[0006] The purpose of this invention is to provide a continuous flow enzymatic hydrolysis device for infant rice cereal, which enables multi-stage enzymatic hydrolysis and allows for precise control of the degree of enzymatic hydrolysis of materials as needed, enabling small-scale processing.

[0007] To solve the above-mentioned technical problems, this utility model provides a continuous flow enzymatic hydrolysis device for infant rice cereal, comprising:

[0008] The mixing tank is used to feed raw materials into a slurry through the inlet, mix and prepare the slurry, and then output the slurry through the outlet.

[0009] The heater is equipped with a material inlet, a material outlet, a heat exchange medium inlet, and a heat exchange medium outlet. The heat exchange medium is input through the heat exchange medium inlet to heat the slurry input through the material inlet. The heat exchange medium after heat exchange is output through the heat exchange medium outlet, and the heated slurry is output through the material outlet.

[0010] The enzyme addition tank is equipped with a rice slurry inlet, an enzyme solution inlet, and a mixed enzyme material outlet. The heated rice slurry is input through the rice slurry inlet and mixed with the enzyme input through the enzyme solution inlet to form a mixed enzyme material, which is then output through the mixed enzyme material outlet.

[0011] A multi-stage heat exchange enzymatic hydrolysis tube includes multiple heat exchange enzymatic hydrolysis tubes connected in series. The heat exchange enzymatic hydrolysis tube obtains the mixed enzyme material output from the enzyme addition tank from the material inlet or the reaction material from the output end of the upper-stage heat exchange enzymatic hydrolysis tube. After heat exchange through the heat exchange medium of this stage, it undergoes enzymatic hydrolysis along with the mixed enzyme material or the reaction material, and then outputs the reaction material or the final enzymatic hydrolysis product to the lower-stage heat exchange enzymatic hydrolysis tube.

[0012] An enzyme inactivator is connected to all the heat exchange enzyme hydrolysis tubes of the multi-stage heat exchange enzyme hydrolysis tubes. It is used to obtain the reaction material or the final enzyme hydrolysis product from the heat exchange enzyme hydrolysis tubes, and to heat the reaction material or the final enzyme hydrolysis product to the enzyme inactivation temperature to terminate the enzyme hydrolysis reaction or to dry and dehydrate to terminate the enzyme hydrolysis reaction.

[0013] It also includes a heat exchange medium tank connected to the heater, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator, for providing a heat exchange medium within a predetermined temperature range to the heater, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator, and for recovering the heat exchange medium after heat exchange is completed, wherein the heat exchange medium is water vapor or water.

[0014] The system also includes a heat-insulating jacket disposed on the outer wall of the slurry mixing tank and a stirring paddle disposed on the slurry mixing tank. The heat-insulating jacket is used to keep the slurry in the slurry mixing tank warm, and the stirring paddle is used to stir the slurry in the slurry mixing tank.

[0015] The feed inlet of the slurry mixing tank is located at the top of the main body of the slurry mixing tank, and the discharge outlet of the slurry mixing tank is located at the bottom of the main body of the slurry mixing tank. The discharge outlet is equipped with a discharge valve of the slurry mixing tank, and the discharge outlet is connected to a material pump, through which the output of the slurry is controlled.

[0016] The system also includes an enzyme tank insulation jacket disposed on the outer wall of the enzyme tank body, an enzyme tank stirring paddle disposed inside the enzyme tank body, a rice slurry inlet disposed on the top of the enzyme tank body, an enzyme liquid inlet disposed on the top of the enzyme tank body and equipped with an enzyme liquid inlet valve, a mixed enzyme material outlet disposed on the bottom of the enzyme tank body and equipped with a material outlet valve, a mixed enzyme material pump disposed on the mixed enzyme material outlet to control the output flow rate of the mixed enzyme material, and a peristaltic pump disposed on the enzyme liquid inlet to control the amount of enzyme added to the enzyme tank body.

[0017] The system also includes a sensor group connected to the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube. These sensors are used to detect the stirring speed of the mixing tank, the input amount of the raw material, the operating status of the material pump, the input and output temperatures of the heat exchange medium in the heater, the stirring speed of the enzyme addition tank, the amount of material added by the peristaltic pump, the input and output temperatures of the heat exchange medium in each stage of the multi-stage heat exchange enzymatic hydrolysis tube, the enzymatic hydrolysis time, and the input and output temperatures of the heat exchange medium in the enzyme inactivator.

[0018] It also includes a display group connected to the sensor group for displaying the detection data of the sensor group.

[0019] It also includes a PLC controller connected to the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube, for controlling the operating status of the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube.

[0020] It also includes a parameter setter connected to the PLC controller, used to set the operating data of the slurry preparation tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube.

[0021] The continuous flow enzymatic hydrolysis device for infant rice cereal provided in this embodiment of the invention has the following advantages compared with the prior art:

[0022] The continuous flow enzymatic hydrolysis device for infant rice cereal provided in this embodiment of the invention involves initial mixing in a mixing tank to form a slurry. The slurry is then preheated via a heat exchanger. After heating, the slurry is mixed with a measured amount of enzyme in an enzyme addition tank to obtain a mixed enzyme material. This mixed enzyme material enters a heat exchange enzymatic hydrolysis tube, where it is rapidly heated to the appropriate enzymatic hydrolysis temperature for the enzymatic hydrolysis reaction. Each additional set of heat exchange enzymatic hydrolysis tubes doubles the enzymatic hydrolysis time. Each set of enzymatic hydrolysis tubes can control the enzymatic hydrolysis temperature. The characteristic of biological enzymes is that within a certain temperature range, the higher the temperature, the higher the enzyme reaction rate. By controlling the enzymatic hydrolysis reaction time and temperature using multiple sets of heat exchange enzymatic hydrolysis tubes, the degree of enzymatic hydrolysis can be controlled. The enzyme addition tank, located between the heater and the heat exchange enzymatic hydrolysis tubes, allows for more precise control of the enzymatic hydrolysis time and temperature, ensuring uniform mixing of the enzyme and rice slurry. After the enzymatic hydrolysis reaction is complete, an enzyme inactivator rapidly raises the temperature of the mixture to the enzyme inactivation temperature, terminating the enzymatic hydrolysis reaction and preventing the mixture from continuing to undergo enzymatic hydrolysis in subsequent processes. The entire enzymatic hydrolysis reaction can be achieved through a pipelined continuous production process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of one embodiment of the continuous flow infant rice cereal enzymatic hydrolysis device provided in this utility model;

[0025] Among them, 1-mixing tank, 2-heater, 3-enzyme addition tank, 4-first-stage heat exchanger enzymatic hydrolysis tube, 5-second-stage heat exchanger enzymatic hydrolysis tube, 6-third-stage heat exchanger enzymatic hydrolysis tube, 7-enzyme inactivator, 8-enzyme storage tank, 9-peristaltic pump, 18-mixing tank discharge valve, 16-material pump, 20-enzyme solution inlet valve, 19-material outlet valve, 17-mixed enzyme material pump, 10, 11, 12, 13, 14, 15-valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figure 1 , Figure 1 A schematic diagram of one embodiment of the continuous flow enzymatic hydrolysis device for infant rice cereal provided in this utility model.

[0028] In one specific embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device includes:

[0029] The mixing tank 1 receives raw materials through the inlet, mixes and modulates them into a slurry, and then outputs the slurry through the outlet.

[0030] The heater 2 is provided with a material inlet, a material outlet, a heat exchange medium inlet, and a heat exchange medium outlet. The heat exchange medium is input through the heat exchange medium inlet to heat up the slurry input through the material inlet. The heat exchange medium after heat exchange is output through the heat exchange medium outlet, and the heated slurry is output through the material outlet.

[0031] Enzyme tank 3 is equipped with a rice slurry inlet, an enzyme solution inlet, and a mixed enzyme material outlet. The heated rice slurry is input through the rice slurry inlet and mixed with the enzyme input through the enzyme solution inlet to form a mixed enzyme material, which is then output through the mixed enzyme material outlet.

[0032] A multi-stage heat exchange enzymatic hydrolysis tube includes multiple heat exchange enzymatic hydrolysis tubes connected in series. The heat exchange enzymatic hydrolysis tube obtains the mixed enzyme material output from the enzyme addition tank 3 from the material inlet or the reaction material from the output end of the upper-stage heat exchange enzymatic hydrolysis tube. After heat exchange through the heat exchange medium of this stage, it undergoes enzymatic hydrolysis along with the mixed enzyme material or the reaction material, and then outputs the reaction material or the final enzymatic hydrolysis product to the lower-stage heat exchange enzymatic hydrolysis tube.

[0033] The enzyme inactivator 7 is connected to all the heat exchange enzyme hydrolysis tubes of the multi-stage heat exchange enzyme hydrolysis tube, and is used to obtain the reaction material or the final enzyme hydrolysis product from the heat exchange enzyme hydrolysis tube, and to heat the reaction material or the final enzyme hydrolysis product to the enzyme inactivation temperature to terminate the enzyme hydrolysis reaction or to dry and dehydrate to terminate the enzyme hydrolysis reaction.

[0034] After initial mixing in the mixing tank 1 to form slurry, the slurry is preheated by a heat exchanger. The heated slurry is then mixed with a measured amount of enzyme in the enzyme addition tank 3 to obtain a mixed enzyme material. The mixed enzyme material enters the heat exchange enzyme hydrolysis tube and is rapidly heated to the appropriate enzymatic hydrolysis temperature to carry out the enzymatic hydrolysis reaction. Each additional set of heat exchange enzyme hydrolysis tubes doubles the enzymatic hydrolysis time. At the same time, each set of enzyme hydrolysis tubes can control the enzymatic hydrolysis temperature. The characteristic of biological enzymes is that within a certain temperature range, the higher the temperature, the higher the enzyme reaction rate. By controlling the enzymatic hydrolysis reaction time and reaction temperature through multiple sets of heat exchange enzyme hydrolysis tubes, the degree of enzymatic hydrolysis reaction can be controlled. The enzyme addition tank 3 is set between the heater 2 and the heat exchange enzyme hydrolysis tubes to more precisely control the enzymatic hydrolysis time and temperature, and to ensure that the enzyme and rice slurry are mixed evenly. After the enzymatic hydrolysis reaction is completed, the temperature of the mixture is rapidly raised to the enzyme inactivation temperature by the enzyme inactivation device 7 to terminate the enzymatic hydrolysis reaction and prevent the mixture from continuing to undergo enzymatic hydrolysis in subsequent processes. The entire enzymatic hydrolysis reaction can be realized in a pipelined continuous production.

[0035] In this application, since different devices need to be heated, in order to ensure the reliability of preheating and enzyme digestion, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes a heat exchange medium tank connected to the heater 2, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator 7, for providing the heater 2, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator 7 with a heat exchange medium within a predetermined temperature range, and for recovering the heat exchange medium after heat exchange is completed, wherein the heat exchange medium is water vapor or water.

[0036] By setting up a heat exchange medium tank to provide heat exchange medium to designated devices, the high efficiency and stability of heat exchange can be guaranteed.

[0037] Electric heating is not suitable for this application. If electric heating is used, the heating tube will be in direct contact with the material, which may cause local overheating and partial gelatinization of the rice flour, which is not conducive to subsequent production processes. Therefore, heat exchange medium is used for heat exchange.

[0038] This application does not limit the type of heat exchange medium, including but not limited to steam or water. Using steam or water can reduce contamination of materials, and because steam or water has a larger specific heat capacity, it can achieve greater heat exchange and improve heat exchange efficiency.

[0039] To further reduce the interference of the external environment on the entire enzymatic hydrolysis process, and to prevent temperature deviations and reduced control capabilities caused by natural heat exchange between the material and the environment during operation due to high or low temperatures.

[0040] To improve the precise control of the entire reaction process, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes a heat-insulating jacket disposed on the outer wall of the mixing tank 1 and a stirring paddle disposed on the mixing tank 1. The heat-insulating jacket is used to keep the slurry in the mixing tank 1 warm, and the stirring paddle is used to stir the slurry in the mixing tank 1.

[0041] By setting up an insulation jacket, the mixing tank 1 is kept as heat-insulated as possible from the outside environment, improving temperature control and subsequent control accuracy. By setting up an agitator, the materials are fully mixed, and the heat generated in the process is also fully dissipated, making the temperature uniform throughout, improving the uniformity of the subsequent reaction, and providing more precise control over the reaction process.

[0042] This application does not limit the material inlet, outlet, shape, size, etc. of the slurry mixing tank 1. In order to improve the feeding accuracy and discharge uniformity of the material, in one embodiment, the feed inlet of the slurry mixing tank 1 is located at the top of the main body of the slurry mixing tank 1, and the discharge outlet of the slurry mixing tank 1 is located at the bottom of the main body of the slurry mixing tank 1. The discharge outlet is provided with a slurry mixing tank discharge valve 18. The discharge outlet is connected to a material pump 16, and the output of the slurry is controlled by the material pump 16.

[0043] By setting the feed inlet at the top, the material will not remain in the relevant pipes during the feeding process, thus ensuring the accuracy of the material feed.

[0044] A discharge port is set at the bottom, and a slurry mixing tank discharge valve 18 and a material pump 16 are set at the discharge port. The material is conveyed through the material pump 16, which improves the accuracy of material output.

[0045] This application does not limit the structure and control method of the discharge valve 18 of the slurry mixing tank and the material pump 16.

[0046] In this application, enzyme solution is added in enzyme tank 3. To minimize heat loss and improve the accuracy of enzyme solution addition during this process, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes an enzyme tank 3 insulation jacket disposed on the outer wall of the enzyme tank 3 body, an enzyme tank 3 stirring paddle disposed inside the enzyme tank 3 body, a rice slurry inlet disposed on the top of the enzyme tank 3 body, an enzyme solution inlet disposed on the top of the enzyme tank 3 body and equipped with an enzyme solution inlet valve 20, a mixed enzyme material outlet disposed on the bottom of the enzyme tank 3 body and equipped with a material outlet valve 19, a mixed enzyme material pump 17 disposed on the mixed enzyme material outlet to control the output flow rate of the mixed enzyme material, and a peristaltic pump 9 disposed on the enzyme solution inlet to control the amount of enzyme added to the enzyme tank 3 body.

[0047] By setting up an insulated jacket for the enzyme addition tank 3, heat exchange with the outside is reduced during the addition of enzyme solution, thereby improving the temperature accuracy and heat exchange accuracy of subsequent enzymatic hydrolysis, and improving the efficiency and accuracy of enzymatic hydrolysis.

[0048] The enzyme solution is added by peristaltic pump 9, and the output flow rate of the mixed enzyme material is controlled by pump 17 to ensure the accuracy of material input and output.

[0049] In this application, the enzyme addition assistance device includes, but is not limited to, the peristaltic pump 9, and other components may also be used.

[0050] To further improve the detection of equipment operating parameters, enhance the efficiency of subsequent operation, and improve control precision, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes a sensor group connected to the mixing tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube. This sensor group is used to detect the stirring speed of the mixing tank 1, the input amount of the raw material, the operating status of the material pump 16, the input and output temperatures of the heat exchange medium of the heater 2, the stirring speed of the enzyme addition tank 3, the addition amount of the peristaltic pump 9, the input and output temperatures of the heat exchange medium of each stage of the multi-stage heat exchange enzymatic hydrolysis tube, the enzymatic hydrolysis time, and the input and output temperatures of the heat exchange medium of the enzyme inactivator 7.

[0051] By using a sensor array, the operating status of each component is detected, and data feedback is achieved, thereby improving the efficiency of subsequent operations.

[0052] This application does not limit the type or installation method of the sensor group.

[0053] Furthermore, to improve management efficiency, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes a display group connected to the sensor group for displaying the detection data of the sensor group.

[0054] The display group displays the detection data from the sensor group, improving data management efficiency.

[0055] This application does not limit the data display method of the display group. It can display data directly, or display the test results as qualified or not, or other methods.

[0056] To further improve the management efficiency of the equipment, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device further includes a PLC controller connected to the mixing tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube, for controlling the operating status of the mixing tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube.

[0057] By setting up a PLC controller to control the operating status of the slurry preparation tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube, the automation of data control and execution is realized, and the automation of equipment operation is achieved.

[0058] To further improve the flexibility of equipment operation, in one embodiment, the continuous flow infant rice cereal enzymatic hydrolysis device also includes a parameter setting device connected to the PLC controller, used to set the operating data of the mixing tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube.

[0059] The operating data of the slurry preparation tank 1, the heater 2, the enzyme addition tank 3, and the multi-stage heat exchange enzymatic hydrolysis tube can be set by the parameter setting device to meet the operating needs of different users and modes, thereby improving operating efficiency.

[0060] This application does not limit the parameter setting method of the parameter setter; it can be on-site input, remote data input, or other data parameter input methods.

[0061] In one embodiment, the continuous-flow infant rice cereal enzymatic hydrolysis device includes:

[0062] The mixing tank 1 is used to mix rice flour into rice slurry. The mixing tank 1 is equipped with a heat-insulating jacket and a stirring paddle. It has a feed inlet at the top and a discharge outlet at the bottom. The discharge outlet at the bottom is equipped with a valve connected to the material pump 16. The heater 2 is equipped with a material inlet, a material outlet, a heat exchange medium inlet, and a heat exchange medium outlet. The material inlet of the heater 2 is connected to the outlet of the material pump 16, and the material outlet is connected to the enzyme addition tank 3. The enzyme addition tank 3 is equipped with rice slurry inlet and enzyme liquid inlet valves 20 at the top and a material outlet valve 19 at the bottom. The enzyme addition tank 3 is equipped with a heat-insulating jacket and a stirring paddle.

[0063] Enzyme addition tank 3 is used to add enzymes and mix them with rice slurry. The bottom outlet of enzyme addition tank 3 is connected to material pump 16. Enzyme solution inlet valve 20 is connected to peristaltic pump 9 and enzyme storage tank 8.

[0064] The amount of enzyme added is controlled and regulated by peristaltic pump 9. The running speed of peristaltic pump 9 is quantitatively related to the rice slurry output from mixing tank 1. This quantitative relationship is adjusted according to different product requirements.

[0065] The multi-stage heat exchange enzymatic hydrolysis tube includes a primary heat exchange enzymatic hydrolysis tube 4, a secondary heat exchange enzymatic hydrolysis tube 5, and a tertiary heat exchange enzymatic hydrolysis tube 6. The secondary heat exchange enzymatic hydrolysis tube 5 is equipped with a material inlet valve, a material outlet valve, a heat exchange medium inlet valve, and a heat exchange medium outlet. The temperature of the reactants can be adjusted by controlling the opening and closing of the heat exchange medium inlet valve in the primary enzymatic hydrolysis tube. If the material reaches the predetermined degree of enzymatic hydrolysis after passing through the primary heat exchange enzymatic hydrolysis tube 4, the material directly enters the enzyme inactivator 7 through the valve.

[0066] The secondary heat exchange enzymatic hydrolysis tube 5 is equipped with a material inlet valve, a material outlet valve, a heat exchange medium inlet valve, and a heat exchange medium outlet valve. The temperature of the reactants can be adjusted by controlling the opening and closing of the heat exchange medium inlet valve. If the material reaches the predetermined degree of enzymatic hydrolysis after passing through the secondary heat exchange enzymatic hydrolysis tube 5, the material directly enters the enzyme inactivator 7 through the valve.

[0067] The three-stage heat exchanger enzymatic hydrolysis tube 6 is equipped with a material inlet valve, a material outlet valve, a heat exchange medium inlet valve, and a heat exchange medium outlet valve. The temperature of the reactants can be adjusted by controlling the opening and closing of the heat exchange medium inlet valve. After passing through the three-stage heat exchanger enzymatic hydrolysis tube 6, the material enters the enzyme inactivator 7 through the valve.

[0068] The purpose of using a multi-stage heat exchange enzymatic hydrolysis tank is to control the hydrolysis time and temperature. Adding a heat exchange enzymatic hydrolysis tube increases the hydrolysis time and correspondingly increases the hydrolysis rate of the material. Depending on product requirements, the hydrolyzed material is output from the corresponding heat exchange enzymatic hydrolysis tube and enters the enzyme inactivator 7. If only a single heat exchange enzymatic hydrolysis tube is used, it is difficult to control the hydrolysis rate (or degree of hydrolysis). Replacing it with multiple parallel heat exchange enzymatic hydrolysis tubes only increases the material throughput and does not yield products with different hydrolysis rates.

[0069] Enzyme inactivator 7 has an inlet valve connected to the outlet valve of the enzymatic hydrolysis tube, and its outlet is connected to the next process. Enzyme inactivator 7 has an inlet valve for the heat exchange medium and an outlet valve for the heat exchange medium. The temperature of the reactants is adjusted by controlling the opening and closing of the inlet valve. Enzyme inactivator 7 is mainly used to rapidly raise the temperature of the material after enzymatic hydrolysis to the enzyme inactivation temperature, thereby terminating the enzymatic hydrolysis reaction.

[0070] Enzymatic hydrolysis process description: Grain flour and water are mixed in mixing tank 1 to obtain rice slurry. The rice slurry is pumped into a heat exchanger for preheating. The heated rice slurry then enters enzyme addition tank 3. Simultaneously, according to the rice-to-enzyme ratio, a certain amount of peristaltic pump 9 is pumped into enzyme addition tank 3 by controlling the speed. The rice slurry and enzyme solution are stirred and mixed in enzyme addition tank 3 to obtain pre-enzymatically hydrolyzed rice slurry. The pre-enzymatically hydrolyzed rice slurry is pumped into primary heat exchanger enzymatic hydrolysis tube 4 for enzymatic hydrolysis. The opening and closing of corresponding valves are as follows: primary heat exchanger enzymatic hydrolysis tube 4 has valve 10 at the inlet, valve 11 at the outlet to secondary heat exchanger enzymatic hydrolysis tube 5, and valve 12 at the enzyme inactivator 7; secondary heat exchanger enzymatic hydrolysis tube 5 has valve 14 at the outlet to tertiary heat exchanger enzymatic hydrolysis tube 6, and valve 13 at the enzyme inactivator 7; tertiary heat exchanger enzymatic hydrolysis tube 6 has valve 15 at the outlet to the enzyme inactivator 7. Selectively connecting two-stage heat-exchange enzymatic hydrolysis tubes 5 and tertiary heat-exchange enzymatic hydrolysis tubes 6 in series controls the degree of enzymatic hydrolysis. It also controls the temperature of the rice slurry in each heat-exchange enzymatic hydrolysis tube, thus controlling the degree of enzymatic hydrolysis. After enzymatic hydrolysis, the rice slurry enters an enzyme inactivator 7, where the temperature is raised to the enzyme inactivation temperature, terminating the enzymatic hydrolysis reaction.

[0071] Rice and water are mixed and prepared in a mixing tank 1, and preheated by a heat exchanger. The heated rice slurry is then mixed with a measured amount of enzyme in an enzyme addition tank 3 to obtain a rice slurry and enzyme mixture (hereinafter referred to as the mixture). The preheated mixture enters a heat exchange enzyme hydrolysis tube, where it is rapidly heated to the appropriate enzymatic hydrolysis temperature for the enzymatic hydrolysis reaction. Each additional set of heat exchange enzyme hydrolysis tubes doubles the enzymatic hydrolysis time. Each set of enzyme hydrolysis tubes can control the enzymatic hydrolysis temperature. The characteristic of biological enzymes is that within a certain temperature range, the higher the temperature, the higher the enzyme reaction rate. By controlling the enzymatic hydrolysis reaction time and temperature through multiple sets of heat exchange enzyme hydrolysis tubes, the degree of enzymatic hydrolysis can be controlled. The enzyme addition tank 3 is placed between the heater 2 and the first-stage heat exchange enzyme hydrolysis tube 4. This allows for more precise control of the enzymatic hydrolysis time and temperature, and ensures uniform mixing of the enzyme and rice slurry. After the enzymatic hydrolysis reaction is completed, the temperature of the mixture is rapidly raised to the enzyme inactivation temperature by an enzyme inactivator 7, terminating the enzymatic hydrolysis reaction and preventing the mixture from continuing to undergo enzymatic hydrolysis in subsequent processes. The entire enzymatic hydrolysis reaction can be achieved through continuous pipeline production.

[0072] The rice slurry is preheated to a suitable temperature before enzymatic hydrolysis by the heater 2, which helps to activate the starch molecules in the slurry. Because of this preheating, the rice slurry and enzyme, after being mixed and introduced into the heat exchange enzymatic hydrolysis tube, can be rapidly heated to the optimal enzymatic hydrolysis temperature. Since the primary heat exchange enzymatic hydrolysis tube 4, the secondary heat exchange enzymatic hydrolysis tube 5, and the tertiary heat exchange enzymatic hydrolysis tube 6 are tubular reaction devices, they have the advantages of low liquid holdup, high heat and mass transfer efficiency, and small footprint. This allows for automated, intelligent, and continuous production, achieving rapid and precise temperature control of the enzymatic hydrolysis reaction. Furthermore, the reaction time can be precisely controlled by varying the number of enzymatic hydrolysis tubes connected in series. After the enzymatic hydrolysis reaction, the enzyme is rapidly inactivated by the tubular enzyme inactivator 7, terminating the enzymatic hydrolysis reaction.

[0073] In this application, the heater 2 may not be used. The water for preparing the slurry may be preheated, or the rice slurry may be preheated. However, the temperature of the rice slurry is easily affected by the temperature of the rice and the ambient temperature.

[0074] Heating unit 2 can be omitted, and the mixture of rice slurry and enzyme can be directly heated to the optimal enzymatic hydrolysis temperature through the heat exchange enzymatic hydrolysis tube. The purpose of setting up a heating heat exchanger is to standardize the temperature of the rice slurry; if a heating heat exchanger is not set up, the performance requirements of the heat exchange enzymatic hydrolysis tube will be higher.

[0075] More sets of heat exchange enzymatic hydrolysis tubes can also be set up, such as 4 or 5 sets or even more sets;

[0076] Alternatively, the enzyme inactivator 7 can be omitted. After the enzymatically hydrolyzed rice paste exits the enzymatic hydrolysis tube, it can be directly sent to the drying equipment for rapid drying and dehydration, which can also quickly terminate the enzymatic hydrolysis reaction. However, this does not deactivate the enzyme. When the dried rice flour is consumed, it needs to be soaked in water. After absorbing water, the rice paste will continue to undergo enzymatic hydrolysis, which may not meet regulatory requirements.

[0077] The enzyme addition tank 3 uses other devices besides the peristaltic pump 9 that can quantitatively add enzyme solution to achieve quantitative enzyme addition.

[0078] In summary, the continuous flow enzymatic hydrolysis device for infant rice cereal provided by this utility model involves initial mixing in a mixing tank to form a slurry. The slurry is then preheated via a heat exchanger. After heating, the slurry is mixed with a measured amount of enzyme in an enzyme addition tank to obtain a mixed enzyme material. This mixed enzyme material enters a heat exchange enzymatic hydrolysis tube, where it is rapidly heated to the appropriate enzymatic hydrolysis temperature for the enzymatic hydrolysis reaction. Each additional set of heat exchange enzymatic hydrolysis tubes doubles the enzymatic hydrolysis time. Each set of enzymatic hydrolysis tubes can control the enzymatic hydrolysis temperature. The characteristic of biological enzymes is that within a certain temperature range, the higher the temperature, the higher the enzyme reaction rate. By controlling the enzymatic hydrolysis reaction time and temperature using multiple sets of heat exchange enzymatic hydrolysis tubes, the degree of enzymatic hydrolysis can be controlled. The presence of an enzyme addition tank between the heater and the heat exchange enzymatic hydrolysis tubes allows for more precise control of the enzymatic hydrolysis time and temperature, ensuring uniform mixing of the enzyme and rice slurry. After the enzymatic hydrolysis reaction is complete, an enzyme inactivator rapidly raises the temperature of the mixture to the enzyme inactivation temperature, terminating the enzymatic hydrolysis reaction and preventing the mixture from continuing to undergo enzymatic hydrolysis in subsequent processes. The entire enzymatic hydrolysis reaction can be achieved through continuous pipeline production.

[0079] The continuous-flow enzymatic hydrolysis device for infant rice cereal provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A continuous flow enzymatic hydrolysis device for infant rice cereal, characterized in that, include: The mixing tank is used to feed raw materials into a slurry through the inlet, mix and prepare the slurry, and then output the slurry through the outlet. The heater is equipped with a material inlet, a material outlet, a heat exchange medium inlet, and a heat exchange medium outlet. The heat exchange medium is input through the heat exchange medium inlet to heat the slurry input through the material inlet. The heat exchange medium after heat exchange is output through the heat exchange medium outlet, and the heated slurry is output through the material outlet. The enzyme addition tank is equipped with a rice slurry inlet, an enzyme solution inlet, and a mixed enzyme material outlet. The heated rice slurry is input through the rice slurry inlet and mixed with the enzyme input through the enzyme solution inlet to form a mixed enzyme material, which is then output through the mixed enzyme material outlet. A multi-stage heat exchange enzymatic hydrolysis tube includes multiple heat exchange enzymatic hydrolysis tubes connected in series. The heat exchange enzymatic hydrolysis tube obtains the mixed enzyme material output from the enzyme addition tank from the material inlet or the reaction material from the output end of the upper-stage heat exchange enzymatic hydrolysis tube. After heat exchange through the heat exchange medium of this stage, it undergoes enzymatic hydrolysis along with the mixed enzyme material or the reaction material, and then outputs the reaction material or the final enzymatic hydrolysis product to the lower-stage heat exchange enzymatic hydrolysis tube. An enzyme inactivator is connected to all the heat exchange enzyme hydrolysis tubes of the multi-stage heat exchange enzyme hydrolysis tubes. It is used to obtain the reaction material or the final enzyme hydrolysis product from the heat exchange enzyme hydrolysis tubes, and to heat the reaction material or the final enzyme hydrolysis product to the enzyme inactivation temperature to terminate the enzyme hydrolysis reaction or to dry and dehydrate to terminate the enzyme hydrolysis reaction.

2. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 1, characterized in that, It also includes a heat exchange medium tank connected to the heater, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator, for providing the heater, the multi-stage heat exchange enzymatic hydrolysis tube and the enzyme inactivator with a heat exchange medium within a predetermined temperature range, and for recovering the heat exchange medium after heat exchange is completed, wherein the heat exchange medium is water vapor or water.

3. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 2, characterized in that, It also includes a heat-insulating jacket disposed on the outer wall of the slurry mixing tank and a stirring paddle disposed on the slurry mixing tank. The heat-insulating jacket is used to keep the slurry in the slurry mixing tank warm, and the stirring paddle is used to stir the slurry in the slurry mixing tank.

4. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 3, characterized in that, The feed inlet of the slurry mixing tank is located at the top of the main body of the slurry mixing tank, and the discharge outlet of the slurry mixing tank is located at the bottom of the main body of the slurry mixing tank. The discharge outlet is equipped with a discharge valve of the slurry mixing tank, and the discharge outlet is connected to a material pump, through which the output of the slurry is controlled.

5. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 4, characterized in that, It also includes an enzyme tank insulation jacket disposed on the outer wall of the enzyme tank body, an enzyme tank stirring paddle disposed inside the enzyme tank body, a rice slurry inlet disposed on the top of the enzyme tank body, an enzyme liquid inlet disposed on the top of the enzyme tank body and provided with an enzyme liquid inlet valve, a mixed enzyme material outlet disposed on the bottom of the enzyme tank body and provided with a material outlet valve, a mixed enzyme material pump disposed on the mixed enzyme material outlet for controlling the output flow rate of the mixed enzyme material, and a peristaltic pump disposed on the enzyme liquid inlet for controlling the amount of enzyme added to the enzyme tank body.

6. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 5, characterized in that, It also includes a sensor group connected to the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube, for detecting the stirring speed of the mixing tank, the input amount of the raw material, the operating status of the material pump, the input and output temperatures of the heat exchange medium of the heater, the stirring speed of the enzyme addition tank and the addition amount of the peristaltic pump of the enzyme addition tank, the input and output temperatures of the heat exchange medium of each stage of the multi-stage heat exchange enzymatic hydrolysis tube, the enzymatic hydrolysis time, and the input and output temperatures of the heat exchange medium of the enzyme inactivator.

7. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 6, characterized in that, It also includes a display assembly connected to the sensor assembly for displaying the detection data of the sensor assembly.

8. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in any one of claims 1-7, characterized in that, It also includes a PLC controller connected to the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube, for controlling the operating status of the mixing tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube.

9. The continuous flow enzymatic hydrolysis device for infant rice cereal as described in claim 8, characterized in that, It also includes a parameter setter connected to the PLC controller, used to set the operating data of the slurry preparation tank, the heater, the enzyme addition tank, and the multi-stage heat exchange enzymatic hydrolysis tube.

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