An ultrasonic coupling enzymatic hydrolysis synergistic hydrolysis device and method for preparing freeze-dried soybean powder

Abstract

The present invention relates to the technical field of freeze-dried soybean powder preparation, specifically an ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device and method for freeze-dried soybean powder preparation, including a frame and a conical enzymatic hydrolysis tank that can be driven by a driving member to rotate relative to the frame. It also includes a reaction barrel placed inside the conical enzymatic hydrolysis tank. The bottom of the reaction barrel is connected with a connecting pipe that penetrates the conical enzymatic hydrolysis tank and rotates with the conical enzymatic hydrolysis tank, and an annular discharge pipe installed at the bottom of the reaction barrel. The connecting pipe and the annular discharge pipe are connected through a circulation component; an ultrasonic generator, and an ultrasonic conduction rod installed on the ultrasonic generator penetrates the reaction barrel and extends into the connecting pipe to form a slit with the inner wall of the connecting pipe. The initially added soybean milk raw material is first subjected to cavitation treatment and then enters the conical enzymatic hydrolysis tank to cooperate with the enzymatic hydrolysis medium to achieve enzymatic hydrolysis, realizing the pre-cavitation treatment of the soybean milk raw material. At the same time, during the mixed enzymatic hydrolysis and hydrolysis, the soybean milk raw material and the enzymatic hydrolysis medium can also be circulated into the reaction barrel multiple times and subsequent cavitation treatment can be carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of freeze-dried soybean powder preparation, and in particular to an ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device and method for freeze-dried soybean powder preparation. Background Art

[0002] Freeze-dried soybean powder is made from soybeans through vacuum freeze-drying, retaining nutrients and being convenient for storage and consumption. During its preparation, complex enzymatic hydrolysis and drying processes are generally required. Due to the low contact efficiency between the enzyme and the substrate in traditional enzymatic hydrolysis methods, the degree of protein hydrolysis is limited, and the solubility and taste of the product are not good. In response, ultrasonic technology has been studied to process proteins to improve the preparation effect.

[0003] During the enzymatic hydrolysis of soymilk, soymilk is usually mixed with water and other auxiliary components to form a liquid reaction system, and at the same time, the ultrasonic cavitation effect is combined. The ultrasonic cavitation effect can generate tiny bubbles in soymilk. When these bubbles burst instantaneously, shock waves and microjets will be generated, which can shear and disperse components such as proteins and fats in soymilk. This effect can make the texture of soymilk more delicate, the taste smoother, and at the same time reduce the granularity in soymilk.

[0004] Therefore, during the enzymatic hydrolysis of soymilk, an ultrasonic generator is generally used to act on the enzymatic hydrolysis tank. However, the existing ultrasonic conduction rod is directly inserted into the enzymatic hydrolysis tank to contact the liquid. Although there is a stirring member in the enzymatic hydrolysis tank to achieve the agitation of the liquid to provide enzymatic hydrolysis and effective contact with the ultrasonic conduction rod, there is loss in ultrasonic conduction, and most of the range in the enzymatic hydrolysis tank is not covered by ultrasonic cavitation treatment. Even if the liquid is continuously agitated in the enzymatic hydrolysis tank, there will still be a problem of a small cavitation range, resulting in poor shearing and dispersion effects of components such as proteins and fats in soymilk, affecting the enzymatic hydrolysis and co-hydrolysis effects. Summary of the Invention

[0005] The purpose of the present invention is to provide an ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device and method for freeze-dried soybean powder preparation to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder, comprising a frame and a conical enzymatic hydrolysis tank mounted on the frame and capable of being driven by a driving member to rotate relative to the frame, further comprising: a reaction barrel placed inside the conical enzymatic hydrolysis tank, when the conical enzymatic hydrolysis tank rotates, it can drive the soybean milk raw material into the reaction barrel, and a connecting pipe penetrating through the conical enzymatic hydrolysis tank and rotating with the conical enzymatic hydrolysis tank is connected to the bottom of the reaction barrel; an annular discharge pipe installed at the bottom of the reaction barrel, and the connecting pipe and the annular discharge pipe are connected through a circulation component; an ultrasonic generator, and an ultrasonic conduction rod installed on the ultrasonic generator penetrates through the reaction barrel and extends into the connecting pipe to form a slit with the inner wall of the connecting pipe.

[0007] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder as described above: An impact chamber is provided on the connecting pipe, and a ring-shaped second arc-shaped guiding surface is formed at a position in the impact chamber facing the flowing direction of the soybean milk raw material; a conical head-like part provided at the end of the ultrasonic conduction rod extends into the impact chamber, and a spherical surface for converging and redirecting the soybean milk raw material passing through the second arc-shaped guiding surface is formed at the bottom of the conical head-like part.

[0008] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder as described above: A ring-shaped first arc-shaped guiding surface is formed inside the conical enzymatic hydrolysis tank, the vertical height of the guiding end of the first arc-shaped guiding surface is greater than the vertical height of the upper port of the reaction barrel, and the first arc-shaped guiding surface and the reaction barrel are staggered in the vertical direction.

[0009] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder as described above: The reaction barrel includes a cylindrical barrel and a conical guiding disc connected to the cylindrical barrel, and the bottom of the cylindrical barrel is connected to the connecting pipe; a temperature control chamber is formed inside the cylindrical barrel, and a heat exchange pipe for adjusting the temperature inside the temperature control chamber is provided inside the temperature control chamber.

[0010] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder as described above: The circulation component includes: a circulation pump installed on a mounting plate fixed to the frame, the circulation pump has a liquid inlet end and a liquid outlet end, and a second return pipe and a first return pipe are respectively installed at the liquid inlet end and the liquid outlet end; one end of the first return pipe away from the circulation pump extends into the reaction barrel and is connected to the annular discharge pipe; one end of the second return pipe away from the circulation pump is detachably connected to and kept in a communicating state with the connecting pipe extending out of the conical enzymatic hydrolysis tank.

[0011] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder as described above: A plurality of nozzles are equidistantly installed on the annular discharge pipe along the circumferential direction, and the spraying direction of the nozzles is vertically directed towards the bottom of the conical enzymatic hydrolysis tank.

[0012] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for freeze-dried soybean powder preparation as described above: A receiving frame arranged in a circular structure is fixed on the frame. The conical enzymatic hydrolysis tank penetrates through the receiving frame, and the annular extension formed at the side end of the conical enzymatic hydrolysis tank is rotationally abutted against the upper end surface of the receiving frame.

[0013] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for freeze-dried soybean powder preparation as described above: A connecting sleeve sleeved with the conical enzymatic hydrolysis tank is also detachably fixed on the receiving frame. A gap for placing the annular extension is formed between the connecting sleeve and the receiving frame. A cover body for blocking the upper port of the conical enzymatic hydrolysis tank is installed on the connecting sleeve, and a feed port is arranged on the cover body.

[0014] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for freeze-dried soybean powder preparation as described above: The driving member includes a motor installed on a mounting plate fixed to the frame. The output end of the motor is connected to a reducer. A driving gear is fixed on the output shaft of the reducer, and the driving gear meshes with an annular gear installed on the conical enzymatic hydrolysis tank.

[0015] The ultrasonic coupling enzymatic hydrolysis and co-hydrolysis method for freeze-dried soybean powder preparation, using the ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device as described above, includes the following steps:

[0016] S1. Start the ultrasonic generator and the circulation component. Then continuously add the soybean milk raw material into the reaction barrel. Drain the soybean milk raw material in the reaction barrel into the connecting pipe through the circulation component. The soybean milk raw material passes through the slit to increase the flow rate of the soybean milk raw material, and cooperate with the action of the ultrasonic conduction rod to achieve the synergistic effect of ultrasonic cavitation and hydrodynamic cavitation of the soybean milk raw material.

[0017] S2. The soybean milk raw material after cavitation enters the conical enzymatic hydrolysis tank from the annular discharge pipe. After the addition of the soybean milk raw material is completed, immediately start the driving member to drive the conical enzymatic hydrolysis tank to rotate, and simultaneously add the enzymatic hydrolysis medium into the reaction barrel, so that the soybean milk raw material is mixed with the enzymatic hydrolysis medium. At the same time, while the conical enzymatic hydrolysis tank is rotating, the soybean milk raw material and the enzymatic hydrolysis medium can be circulated into the reaction barrel for cavitation treatment again.

[0018] S3. After continuously circulating for a certain time, complete the treatment of the soybean milk raw material and discharge it from the conical enzymatic hydrolysis tank.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the setting of the reaction barrel and the conical enzymolysis tank, the initially added soymilk raw material is first subjected to cavitation treatment and then enters the conical enzymolysis tank to cooperate with the enzymolysis medium to achieve enzymolysis and hydrolysis, realizing the pre-cavitation treatment of the soymilk raw material. At the same time, during the combined enzymolysis and hydrolysis, the soymilk raw material and the enzymolysis medium can also be circulated into the reaction barrel multiple times for subsequent cavitation treatment, making the cavitation of the soymilk raw material thorough to improve the treatment efficiency; Secondly, when the soymilk raw material passes through the slit (Venturi effect), hydraulic cavitation is realized, and combined with the effect of ultrasonic cavitation, the formation of cavitation microbubbles is strengthened, improving the overall cavitation effect of the reaction system to improve the subsequent enzymolysis and hydrolysis efficiency, effectively avoiding the problems of poor ultrasonic penetration caused by directly applying ultrasonic equipment to the enzymolysis tank and poor cavitation effect due to uneven contact with the soymilk raw material; After the soymilk raw material enters the impact chamber, it accelerates towards the second arc-shaped guide surface along the gap between the inner wall of the impact chamber and the conical head, and then changes the flow direction along the second arc-shaped guide surface and converges with the spherical position, realizing the impact of the soymilk raw material, increasing the turbulence and flow velocity of the soymilk raw material, thereby further increasing the cavitation effect, increasing the number of cavitation microbubbles and strengthening the oscillation and bursting intensity of the bubbles, realizing the whole process strengthening from the generation to the bursting of the microbubbles to improve the overall efficiency of the cavitation treatment; The present invention integrates ultrasonic cavitation, hydraulic cavitation and the enzymolysis process, reduces the complexity of traditional distribution operations, and at the same time optimizes the cooperative effect of ultrasonic cavitation and hydraulic cavitation, effectively improving the treatment effect of the soymilk raw material. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an ultrasonic-coupled enzymolysis and co-hydrolysis device for preparing freeze-dried soybean powder;

[0021] Figure 2 It is a schematic structural diagram of another angle of the ultrasonic-coupled enzymolysis and co-hydrolysis device for preparing freeze-dried soybean powder;

[0022] Figure 3 It is a front view of the ultrasonic-coupled enzymolysis and co-hydrolysis device for preparing freeze-dried soybean powder;

[0023] Figure 4 It is a top view of the conical enzymolysis tank and the reaction barrel in the ultrasonic-coupled enzymolysis and co-hydrolysis device for preparing freeze-dried soybean powder;

[0024] Figure 5 For Figure 4 The sectional view in the A-A direction of

[0025] Figure 6 For Figure 5 The enlarged view of the structure at C in

[0026] Figure 7Schematic diagram of the structure of the conical enzymolysis tank in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0027] Figure 8 It is Figure 7 Sectional perspective view in the B-B direction in;

[0028] Figure 9 Schematic diagram of the connection state of the reaction barrel and the circulation component in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0029] Figure 10 Schematic diagram of the connection state of the reaction barrel and the circulation component from another angle in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0030] Figure 11 Schematic diagram of the separation state of the conical enzymolysis tank, the receiving part, the connecting sleeve and the cover body in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0031] Figure 12 Schematic diagram of the connection state of the first return pipe, the reaction barrel and the annular discharge pipe in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0032] Figure 13 Top view of the connection state of the first return pipe, the reaction barrel and the annular discharge pipe in the ultrasonic coupling enzymolysis and co-hydrolysis device for freeze-dried soybean powder preparation;

[0033] Figure 14 It is Figure 13 Sectional view in the D-D direction in;

[0034] Figure 15 It is Figure 14 Enlarged view of the structure at E in;

[0035] In the figure: 1-frame, 2-mounting plate, 3-supporting wheel, 4-motor, 5-receiving frame, 6-cover body, 7-connecting sleeve, 8-fixing part, 9-feed inlet, 10-ultrasonic generator, 11-first return pipe, 12-driving gear, 13-annular gear, 14-circulation pump, 15-second return pipe, 16-enzymolysis tank, 17-ultrasonic conduction rod, 1701-conical-like head, 18-discharge valve, 19-first arc-shaped guiding surface, 20-reaction barrel, 2001-conical guiding disc, 2002-cylindrical barrel, 21-annular discharge pipe, 22-connecting pipe, 23-impact chamber, 2301-second arc-shaped guiding surface, 24-spray head, 25-heat exchange pipe, 26-annular extension. Detailed implementation method

[0036] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0037] As used herein, the term "exemplary" means "serving as an example, embodiment, or illustration". Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0038] In addition, for a better description of the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can be implemented without some of these specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0039] Please refer to Figures 1 - 15 , in an embodiment of the present invention, an ultrasonic coupling enzymatic hydrolysis and co-hydrolysis device for preparing freeze-dried soybean powder includes a frame 1 and a conical enzymatic hydrolysis tank 16 installed on the frame 1 and capable of being driven by a driving member to rotate relative to the frame 1. A discharge valve 18 for discharging materials is installed at the bottom of the conical enzymatic hydrolysis tank 16. The device further includes: a reaction barrel 20 placed inside the conical enzymatic hydrolysis tank 16. When the conical enzymatic hydrolysis tank 16 rotates, it can drive the soybean milk raw material into the reaction barrel 20. A connecting pipe 22 that penetrates the conical enzymatic hydrolysis tank 16 and rotates with the conical enzymatic hydrolysis tank 16 is connected to the bottom of the reaction barrel 20. An annular discharge pipe 21 is installed at the bottom of the reaction barrel 20. The connecting pipe 22 and the annular discharge pipe 21 are connected through a circulation assembly. An ultrasonic generator 10, and an ultrasonic conduction rod 17 installed on the ultrasonic generator 10 penetrates the reaction barrel 20 and extends into the connecting pipe 22 to form a slit with the inner wall of the connecting pipe 22.

[0040] The soybean milk raw material is continuously added into the reaction barrel 20, and the soybean milk raw material in the reaction barrel 20 is drained into the connecting pipe 22 through the circulation assembly. The soybean milk raw material in the connecting pipe 22 undergoes ultrasonic cavitation through the ultrasonic conduction rod 17. After cavitation, the soybean milk raw material enters the conical enzymatic hydrolysis tank 16 from the annular discharge pipe 21. After the addition of the soybean milk raw material is completed, the driving member is immediately started to drive the conical enzymatic hydrolysis tank 16 to rotate. While the conical enzymatic hydrolysis tank 16 is rotating, the soybean milk raw material can be conveyed into the reaction barrel 20, and at the same time, an enzymatic hydrolysis medium is added into the reaction barrel 20 to preliminarily mix the soybean milk raw material and the enzymatic hydrolysis medium. Subsequently, the soybean milk raw material and the enzymatic hydrolysis medium are circulated into the reaction barrel 20 for cavitation treatment again.

[0041] In this embodiment, through the arrangement of the reaction barrel 20 and the conical enzymolysis tank 16, the initially added soymilk raw material is first subjected to cavitation treatment and then enters the conical enzymolysis tank 16 to cooperate with the enzymolysis medium to achieve enzymolysis and hydrolysis, realizing the pre-cavitation treatment of the soymilk raw material. At the same time, during the mixed enzymolysis and hydrolysis, the soymilk raw material and the enzymolysis medium can also enter the reaction barrel 20 multiple times for subsequent cavitation treatment, making the cavitation of the soymilk raw material thorough to improve the treatment efficiency. Secondly, in this embodiment, when the soymilk raw material passes through the slit (Venturi effect), hydrodynamic cavitation is realized, and combined with the action of ultrasonic cavitation, the formation of cavitation microbubbles is strengthened, improving the overall cavitation effect of the reaction system to improve the subsequent enzymolysis and hydrolysis efficiency, effectively avoiding the problems of poor ultrasonic penetration caused by directly applying the ultrasonic device to the enzymolysis tank and poor cavitation effect due to uneven contact with the soymilk raw material.

[0042] Meanwhile, to enhance the mixing effect of the soymilk raw material and the enzymolysis medium, the inner wall of the conical enzymolysis tank 16 is designed with spiral protrusions. These protrusions can effectively promote the mixing of the soymilk raw material and the enzymolysis medium when the conical enzymolysis tank 16 rotates, ensuring the uniformity of the enzymolysis and hydrolysis reactions, and at the same time increasing the force for the soymilk raw material to move upward along the side wall of the conical enzymolysis tank 16.

[0043] Furthermore, please refer to Figures 4 - 6 , an impact chamber 23 is provided on the connecting pipe 22, and a ring-shaped second arc-shaped guide surface 2301 is formed at a position in the impact chamber 23 facing the flow direction of the soymilk raw material; the conical head 1701 provided at the end of the ultrasonic conduction rod 17 extends into the impact chamber 23, and a spherical surface for converging and changing the direction of the soymilk raw material passing through the second arc-shaped guide surface 2301 is formed at the bottom of the conical head 1701.

[0044] When the soymilk raw material enters the impact chamber 23, it accelerates and impacts towards the second arc-shaped guide surface 2301 along the gap between the inner wall of the impact chamber 23 and the conical head 1701, then changes the flow direction along the second arc-shaped guide surface 2301 and converges with the spherical surface, realizing the impact of the soymilk raw material to increase the turbulence and flow velocity of the soymilk raw material, thereby further increasing the cavitation effect, increasing the number of cavitation microbubbles and strengthening the oscillation and bursting intensity of the bubbles, realizing the whole process strengthening from the generation to the bursting of the microbubbles to improve the overall efficiency of the cavitation treatment. At the same time, after the soymilk raw material is mixed with the enzymolysis medium, it also increases the mixing effect to a certain extent after entering the impact chamber 23. In addition, the setting of the conical head 1701 not only optimizes the flow path of the soymilk raw material, but also enhances the conduction effect of ultrasonic waves in the soymilk raw material through its unique spherical surface design, making the ultrasonic cavitation and hydrodynamic cavitation act more synergistically, jointly improving the formation and bursting efficiency of cavitation microbubbles, and improving the subsequent enzymolysis and hydrolysis reaction efficiency and product quality to a certain extent.

[0045] Furthermore, please refer toFigure 5 , Figure 7 and Figure 8 , a ring-shaped first arc-shaped diversion surface 19 is formed inside the conical enzymolysis tank 16. The vertical height of the guiding end of the first arc-shaped diversion surface 19 is greater than the vertical height of the upper port of the reaction barrel 20, and the first arc-shaped diversion surface 19 intersects with the reaction barrel 20 in the vertical direction.

[0046] When the conical enzymolysis tank 16 rotates, the soymilk raw material moves upward along the inner wall of the conical enzymolysis tank 16 under the action of centrifugal force and flows into the reaction barrel 20 along the first arc-shaped diversion surface 19, realizing the transfer of the soymilk raw material between the conical enzymolysis tank 16 and the reaction barrel 20. This not only ensures that the soymilk raw material can be evenly and fully contacted with the enzymolysis medium, but also promotes the uniform progress of the enzymolysis reaction. At the same time, during the upward movement of the soymilk raw material along the inner wall of the conical enzymolysis tank 16 under the action of centrifugal force, the mixing degree of the soymilk raw material and the enzymolysis medium is also increased, further improving the enzymolysis efficiency.

[0047] The fact that the vertical height of the guiding end of the first arc-shaped diversion surface 19 is greater than the vertical height of the upper port of the reaction barrel 20 provides a channel for the flow of the soymilk raw material, ensuring that the soymilk raw material can smoothly flow into the reaction barrel 20, realizing the circular flow of the soymilk raw material, and cooperating with ultrasonic cavitation and hydraulic cavitation, effectively avoiding the problem of incomplete cavitation in the soymilk raw material resulting in insufficient enzymolysis and hydrolysis.

[0048] Please refer to Figure 5 , Figure 9 and Figure 10 , the reaction barrel 20 includes a cylindrical barrel 2002 and a conical guiding disk 2001 connected to the cylindrical barrel 2002. The bottom of the cylindrical barrel 2002 is communicated with the connecting pipe 22. The upper opening diameter of the conical guiding disk 2001 is larger than its lower opening diameter to form an inverted conical structure. The passing area of the upper opening of the conical guiding disk 2001 is larger than the passing area of the circular through hole formed by enclosing the guiding end of the first arc-shaped diversion surface 19. The conical guiding disk 2001 is used to receive the soymilk raw material introduced by the first arc-shaped diversion surface 19 and guide it into the cylindrical barrel 2002.

[0049] Among them, a temperature control cavity is formed inside the cylindrical barrel 2002, and a heat exchange tube 25 for adjusting the temperature inside the temperature control cavity is arranged in the temperature control cavity. The heat exchange tube 25 is arranged in the cylindrical barrel 2002 in a spiral winding manner. Both ends of the heat exchange tube 25 extend out of the cylindrical barrel 2002 to respectively form a heat exchange medium outlet and a heat exchange medium inlet. By flowing the heat exchange medium in the heat exchange tube 25, the temperature of the reaction system is adjusted, thereby improving the overall cavitation effect.

[0050] Further, please refer to 1 - Figure 3 , Figure 9 andFigure 10 The circulation component includes a circulation pump 14 installed on a mounting plate 2 fixed to the frame 1. The circulation pump 14 has a liquid inlet end and a liquid outlet end, and a second return pipe 15 and a first return pipe 11 are respectively installed at the liquid inlet end and the liquid outlet end; one end of the first return pipe 11 away from the circulation pump 14 extends into the reaction barrel 20 and communicates with the annular discharge pipe 21; one end of the second return pipe 15 away from the circulation pump 14 is detachably connected to and kept in communication with the connecting pipe 22 extending out of the conical enzymolysis tank 16.

[0051] When the circulation pump 14 is operating, a negative pressure is generated in the second return pipe 15, thereby draining the soymilk raw material in the reaction barrel 20, causing the soymilk raw material in the reaction barrel 20 to flow into the second return pipe 15 along the connecting pipe 22, providing a flow force for the soymilk raw material in the reaction barrel 20. After the soymilk raw material undergoes cavitation treatment in the reaction barrel 20 and the connecting pipe 22, it then enters the annular discharge pipe 21 along the first return pipe 11, and finally enters the conical enzymolysis tank 16 through the annular discharge pipe 21, realizing the reciprocating passage of the soymilk raw material through ultrasonic and hydrodynamic cavitation - cyclic enzymolysis and hydrolysis treatment. During this process, the soymilk raw material undergoes cavitation treatment in the reaction barrel 20, which can effectively improve the enzymolysis efficiency. At the same time, through the action of the circulation pump, the soymilk raw material continuously circulates in the system, ensuring the uniformity and sufficiency of the enzymolysis and hydrolysis processes.

[0052] For the convenience of disassembly, the second return pipe 15 is detachably connected to the connecting pipe 22 through a clamp.

[0053] Further, please refer to Figure 8 and Figure 10 , a plurality of nozzles 24 are equidistantly installed on the annular discharge pipe 21 along the circumferential direction. The spraying direction of the nozzles 24 is vertically oriented towards the bottom of the conical enzymolysis tank 16. The soymilk raw material entering the annular discharge pipe 21 is evenly sprayed onto the bottom of the conical enzymolysis tank 16 through the plurality of nozzles 24, realizing the dispersed entry of the soymilk raw material. When the soymilk raw material enters the conical enzymolysis tank 16, it impacts the soymilk raw material originally in the conical enzymolysis tank 16, thereby improving the dispersion effect of the soymilk raw material, further enhancing the dispersion effect and mixing uniformity of the soymilk raw material in the conical enzymolysis tank 16, and improving the enzymolysis and hydrolysis efficiency.

[0054] It should be noted that, please refer to Figures 12 - 15 , after the first return pipe 11 extends into the reaction barrel 20, it is fixed to the bottom of the reaction barrel 20, and the inside of the first return pipe 11 is in communication with the inside of the annular discharge pipe 21, so that the soymilk raw material flowing along the first return pipe 11 or the mixture of the soymilk raw material and the enzymolysis medium directly enters the annular discharge pipe 21 and directly enters the conical enzymolysis tank 16 through the nozzles 24.

[0055] To achieve the stable rotation of the conical enzymolysis tank 16, please refer to Figures 1 - 3 and Figure 11 On the frame 1, a receiving frame 5 arranged in a ring structure is fixed. The conical enzymolysis tank 16 penetrates through the receiving frame 5, and the annular extension 26 formed on the side end of the conical enzymolysis tank 16 is rotationally abutted against the upper end surface of the receiving frame 5. Preferably, a plurality of rollers or balls can be equidistantly arranged along the circumference on the upper end surface of the receiving frame 5, and the annular extension 26 is in rolling contact with the rollers or balls, thereby reducing the friction between the annular extension 26 and the receiving frame 5, ensuring the stable rotation of the conical enzymolysis tank 16. At the same time, the setting of the receiving frame 5 can not only support and position the conical enzymolysis tank 16, but also facilitate the disassembly and assembly of the conical enzymolysis tank 16.

[0056] A connecting sleeve 7 sleeved on the conical enzymolysis tank 16 is also detachably fixed on the receiving frame 5. A gap for placing the annular extension 26 is formed between the connecting sleeve 7 and the receiving frame 5. A cover body 6 for plugging the upper port of the conical enzymolysis tank 16 is installed on the connecting sleeve 7. A feed port 9 is arranged on the cover body 6. By setting the connecting sleeve 7 to connect the cover body 6 for plugging the conical enzymolysis tank 16, it is ensured that the port of the conical enzymolysis tank 16 is plugged during the continuous rotation of the conical enzymolysis tank 16, preventing the rotation of the conical enzymolysis tank 16 from being affected by the setting of the cover body 6. At the same time, the gap between the connecting sleeve 7 and the receiving frame 5 provides an activity space for the annular extension 26, further ensuring the smooth rotation of the conical enzymolysis tank 16. The feed port 9 on the cover body 6 ensures that the soymilk raw material can accurately and efficiently enter the interior of the conical enzymolysis tank 16, thereby improving the efficiency and quality of the entire enzymolysis process.

[0057] It should be added that a connecting rod is installed on the conical guiding disk 2001. The connecting rod is arranged in an L-shaped structure and is used to fix the conical guiding disk 2001 to the connecting sleeve 7, so as to stably support the reaction barrel 20. At the same time, considering subsequent disassembly, the conical guiding disk 2001 and the cylindrical barrel 2002 are set in a detachable connection state, including but not limited to the installation method: the lower bottom edge of the conical guiding disk 2001 extends towards the inside of the cylindrical barrel 2002 to form a connecting block, and the connecting block is used to be fixed to the inner wall of the cylindrical barrel 2002 by bolts.

[0058] Please refer to Figures 1 - 3, the driving member includes a motor 4 installed on a mounting plate 2 fixed to the frame 1. The output end of the motor 4 is connected to a speed reducer. A driving gear 12 is fixed on the output shaft of the speed reducer. The driving gear 12 meshes with an annular gear 13 installed on the conical enzymatic hydrolysis tank 16. The provided motor 4 drives the speed reducer to move, and the speed reducer drives the driving gear 12 to rotate, thereby driving the conical enzymatic hydrolysis tank 16 to rotate under the action of the annular gear 13 to meet the driving requirement.

[0059] Wherein, in order to ensure the stability of the conical enzymatic hydrolysis tank 16 during rotation, a plurality of supporting wheels 3 are further installed on the mounting plate 2. The supporting wheels 3 are in rolling contact with the side wall of the conical enzymatic hydrolysis tank 16. Preferably, the plurality of supporting wheels 3 are equidistantly distributed circumferentially around the conical enzymatic hydrolysis tank 16.

[0060] The ultrasonic coupling enzymatic hydrolysis and synergistic hydrolysis method for preparing freeze-dried soybean powder, using the ultrasonic coupling enzymatic hydrolysis and synergistic hydrolysis device for preparing freeze-dried soybean powder described above, includes the following steps:

[0061] S1. Start the ultrasonic generator 10 and the circulation component. Subsequently, continuously add the soybean milk raw material into the reaction barrel 20. Drain the soybean milk raw material in the reaction barrel 20 into the connecting pipe 22 through the circulation component. The soybean milk raw material passes through the slit to increase the flow rate of the soybean milk raw material, and cooperate with the ultrasonic conduction rod 17 to achieve the synergistic effect of ultrasonic cavitation and hydrodynamic cavitation of the soybean milk raw material;

[0062] S2. The soybean milk raw material after cavitation enters the conical enzymatic hydrolysis tank 16 from the annular discharge pipe 21. After the addition of the soybean milk raw material is completed, immediately start the driving member to drive the conical enzymatic hydrolysis tank 16 to rotate, and simultaneously add the enzymatic hydrolysis medium into the reaction barrel 20, so that the soybean milk raw material is mixed with the enzymatic hydrolysis medium. At the same time, while the conical enzymatic hydrolysis tank 16 is rotating, the soybean milk raw material and the enzymatic hydrolysis medium can be circulated into the reaction barrel 20 for cavitation treatment again;

[0063] S3. After continuous circulation for a certain time, the treatment of the soybean milk raw material is completed and discharged from the conical enzymatic hydrolysis tank 16.

[0064] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0065] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder, comprising a frame (1) and a conical enzymatic hydrolysis tank (16) mounted on the frame (1) and capable of being driven by a driving member to rotate relative to the frame (1), characterized in that: Also includes: a reaction barrel (20) placed in the conical enzymolysis tank (16), wherein the conical enzymolysis tank (16) is capable of driving the soymilk raw material into the reaction barrel (20) when the conical enzymolysis tank (16) rotates, and a connecting pipe (22) is connected at the bottom of the reaction barrel (20) and passes through the conical enzymolysis tank (16) and rotates with the conical enzymolysis tank (16); an annular discharge pipe (21) installed at the bottom of the reaction barrel (20), the connecting pipe (22) being connected to the annular discharge pipe (21) via a circulation component; An ultrasonic generator (10), wherein an ultrasonic wave conducting rod (17) mounted on the ultrasonic generator (10) penetrates the reaction barrel (20) and extends into the connecting pipe (22) to form a slit with the inner wall of the connecting pipe (22); The connecting pipe (22) is provided with an impact chamber (23), and a second arc-shaped flow guide surface (2301) in an annular shape is formed in the impact chamber (23) at a position facing the flow direction of the soymilk raw material; The conical head (1701) provided at the end of the ultrasonic wave conducting rod (17) extends into the impact cavity (23), and the bottom of the conical head (1701) forms a spherical position for redirecting the convergence of the soymilk raw materials passing through the second arc-shaped flow guide surface (2301); A first arc-shaped guide surface (19) in an annular shape is formed on the inner side of the conical enzymolysis tank (16), the vertical height of the guide end of the first arc-shaped guide surface (19) is greater than the vertical height of the upper port of the reaction barrel (20), and the first arc-shaped guide surface (19) and the reaction barrel (20) are staggered in the vertical direction; The reaction barrel (20) comprises a cylindrical barrel (2002) and a conical guide plate (2001) connected to the cylindrical barrel (2002), and the bottom of the cylindrical barrel (2002) is connected to the connecting pipe (22).

2. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: A temperature control cavity is formed on the inner side of the cylindrical barrel (2002), and a heat exchange tube (25) is arranged in the temperature control cavity for adjusting the temperature in the temperature control cavity.

3. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: The loop components include: a circulation pump (14) mounted on a mounting plate (2) fixed to the frame (1), the circulation pump (14) having a liquid inlet end and a liquid outlet end, the liquid inlet end and the liquid outlet end being respectively mounted with a second return pipe (15) and a first return pipe (11); One end of the first reflux pipe (11) away from the circulation pump (14) extends into the reaction barrel (20) and is connected to the annular discharge pipe (21); One end of the second reflux pipe (15) away from the circulation pump (14) is detachably connected to the connecting pipe (22) extending out of the conical enzymolysis tank (16) and maintains a connected state.

4. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 3, characterized in that: A plurality of nozzles (24) are installed on the annular discharge pipe (21) at equal intervals in the circumferential direction, and the spraying direction of the nozzles (24) is vertically toward the bottom of the conical enzymolysis tank (16).

5. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: A receiving frame (5) arranged in an annular structure is fixed on the frame (1), the conical enzymolysis tank (16) passes through the receiving frame (5), and an annular extension piece (26) formed at the side end of the conical enzymolysis tank (16) is rotatably abutted against the upper end surface of the receiving frame (5).

6. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 5, characterized in that: A connecting sleeve (7) which is sleeved with the conical enzymolysis tank (16) is detachably fixed on the receiving frame (5), and a gap is formed between the connecting sleeve (7) and the receiving frame (5) for the annular extension member (26) to be placed; The connecting sleeve (7) is provided with a cover body (6) for sealing the upper port of the conical enzymolysis tank (16), and the cover body (6) is provided with a feed port (9).

7. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: The driving member comprises a motor (4) mounted on a mounting plate (2) fixed to the frame (1); the output end of the motor (4) is connected to a reducer; a driving gear (12) is fixed on an output shaft of the reducer; and the driving gear (12) is meshed with a ring gear (13) mounted on the conical enzymolysis tank (16).

8. A method for preparing freeze-dried soybean powder by ultrasonic-coupled enzymatic hydrolysis, characterized in that: The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to any one of claims 1 to 7 comprises the following steps: S1, starting the ultrasonic generator (10) and the circulation component, then continuously adding soy milk raw materials into the reaction barrel (20), draining the soy milk raw materials in the reaction barrel (20) into the connecting pipe (22) through the circulation component, and the soy milk raw materials pass through the slit to increase the flow speed of the soy milk raw materials, and cooperate with the action of the ultrasonic conduction rod (17) to achieve the synergistic effect of ultrasonic cavitation and hydrodynamic cavitation of the soy milk raw materials; S2, the soymilk raw material after cavitation enters the conical enzymolysis tank (16) from the annular discharge pipe (21). After the soymilk raw material is added, the driving member is immediately started to drive the conical enzymolysis tank (16) to rotate, and the enzymolysis medium is simultaneously added to the reaction barrel (20) so that the soymilk raw material and the enzymolysis medium are mixed. At the same time, while the conical enzymolysis tank (16) is rotating, the soymilk raw material and the enzymolysis medium can be circulated into the reaction barrel (20) for cavitation treatment again; S3. After the circulation continues for a certain period of time, the soymilk raw material is processed and discharged from the conical enzymatic hydrolysis tank (16).

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