Ultrasonic coupling enzymolysis synergistic hydrolysis device and method for preparing freeze-dried bean powder

Abstract

The invention relates to the technical field of freeze-dried bean powder preparation, in particular to an ultrasonic coupling enzymolysis synergistic hydrolysis device and method for freeze-dried bean powder preparation, and the ultrasonic coupling enzymolysis synergistic hydrolysis device comprises a rack and a conical enzymolysis tank which can be driven by a driving part to rotate relative to the rack, and further comprises a reaction barrel arranged in the conical enzymolysis tank, the bottom of the reaction barrel is communicated with a connecting pipe which penetrates through the conical enzymolysis tank and rotates with the conical enzymolysis tank and an annular discharging pipe which is arranged at the bottom of the reaction barrel, and the connecting pipe is communicated with the annular discharging pipe through a circulating assembly; an ultrasonic conduction rod mounted 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, and initially added soybean milk raw materials are subjected to cavitation treatment and then enter the conical enzymolysis tank to be matched with an enzymolysis medium to realize enzymolysis, so that pre-cavitation treatment on the soybean milk raw materials is realized; meanwhile, when mixed enzymolysis and hydrolysis are carried out, soybean milk raw materials and enzymolysis media can circularly enter the reaction barrel for multiple times, and subsequent cavitation treatment is carried out.

Description

Technical Field

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

[0002] Freeze-dried soy powder is made from soybeans through vacuum freeze drying, which retains nutrients and is easy to store and eat. During its preparation, it generally needs to go through a complex enzymatic hydrolysis and drying process. Due to the low contact efficiency between the enzyme and the substrate in the traditional enzymatic hydrolysis method, the degree of protein hydrolysis is limited, and the solubility and taste of the product are poor. In this regard, some studies have used ultrasonic technology to treat the protein to improve the preparation effect.

[0003] During the enzymatic hydrolysis of soy milk, soy milk is usually mixed with water and other auxiliary ingredients to form a liquid reaction system, and ultrasonic cavitation effect is used at the same time. Ultrasonic cavitation effect can produce tiny bubbles in the soy milk. These bubbles will produce shock waves and microjets when they burst instantly, which can shear and disperse the protein, fat and other components in the soy milk. This effect can make the texture of the soy milk more delicate and the taste smoother, while reducing the granularity in the soy milk.

[0004] Therefore, during the enzymatic hydrolysis of soy milk, an ultrasonic generator is generally used in the enzymatic hydrolysis tank, but the existing ultrasonic transmission rod is directly inserted into the enzymatic hydrolysis tank to contact the liquid. Although a stirring element in the enzymatic hydrolysis tank is used to stir the liquid to provide enzymatic hydrolysis and effective contact with the ultrasonic transmission rod, there is loss in ultrasonic transmission, and most of the area in the enzymatic hydrolysis tank is not covered by the ultrasonic cavitation treatment. Even if the liquid is continuously stirred in the enzymatic hydrolysis tank, the cavitation range is still small, resulting in poor shearing and dispersion effects of components such as protein and fat in the soy milk, affecting the enzymatic hydrolysis and hydrolysis effects. Summary of the invention

[0005] The object of the present invention is to provide an ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device and method for preparing freeze-dried soy powder, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder, comprising a frame and a conical enzymatic hydrolysis tank installed on the frame and capable of being driven by a driving member to rotate relative to the frame, and also comprising: a reaction barrel placed in the conical enzymatic hydrolysis tank, when the conical enzymatic hydrolysis tank rotates, the soy milk raw material can be driven into the reaction barrel, the bottom of the reaction barrel is connected to a connecting pipe that penetrates the conical enzymatic hydrolysis tank and rotates with the conical enzymatic hydrolysis tank; 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, an ultrasonic wave conduction rod installed on the ultrasonic wave generator penetrates the reaction barrel and extends into the connecting pipe to form a slit with the inner wall of the connecting pipe.

[0007] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: an impact chamber is provided on the connecting pipe, and a second arc-shaped guide surface is formed in the impact chamber at a position facing the flow direction of the soy milk raw material; the conical head arranged at the end of the ultrasonic wave conduction rod extends into the impact chamber, and the bottom of the conical head forms a spherical position for converging and redirecting the soy milk raw material passing through the second arc-shaped guide surface.

[0008] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: a first arcuate guide surface in an annular shape is formed on the inner side of the conical enzymatic hydrolysis tank, the vertical height of the guide end of the first arcuate guide surface is greater than the vertical height of the upper port of the reaction barrel, and the first arcuate guide surface and the reaction barrel are staggered in the vertical direction.

[0009] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: the reaction barrel includes a cylindrical barrel and a conical guide plate connected to the cylindrical barrel, and the bottom of the cylindrical barrel is connected to the connecting pipe; a temperature control cavity is formed on the inner side of the cylindrical barrel, and a heat exchange tube for adjusting the temperature in the temperature control cavity is arranged in the temperature control cavity.

[0010] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: the circulation component includes: a circulation pump installed on a mounting plate fixed to the frame, the circulation pump having a liquid inlet end and a liquid outlet end, the liquid inlet end and the liquid outlet end are respectively equipped with a second reflux pipe and a first reflux pipe; the end of the first reflux pipe away from the circulation pump extends into the reaction barrel and is connected to the annular discharge pipe; the end of the second reflux pipe away from the circulation pump is detachably connected to the connecting pipe extending out of the conical enzymatic hydrolysis tank and remains in a connected state.

[0011] The ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy 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 toward the bottom of the conical enzymatic hydrolysis tank.

[0012] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: a receiving frame arranged in an annular structure is fixed on the frame, the conical enzymatic hydrolysis tank passes through the receiving frame, and the annular extension formed at the side end of the conical enzymatic hydrolysis tank is rotatably abutted against the upper end surface of the receiving frame.

[0013] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: the receiving frame is also detachably fixed with a connecting sleeve that is sleeved with the conical enzymatic hydrolysis tank, and a gap is formed between the connecting sleeve and the receiving frame for the placement of the annular extension piece; the connecting sleeve is installed with a cover body for sealing the upper port of the conical enzymatic hydrolysis tank, and the cover body is provided with a feed port.

[0014] The ultrasonically coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above: the driving member includes a motor mounted 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 is meshed with a ring gear mounted on the conical enzymatic hydrolysis tank.

[0015] The ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis method for preparing freeze-dried soy powder adopts the ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above, comprising the following steps: S1, start the ultrasonic generator and the circulation component, then continuously add the soy milk raw material into the reaction barrel, and drain the soy milk raw material in the reaction barrel into the connecting pipe through the circulation component. The soy milk raw material passes through the slit to increase the flow rate of the soy milk raw material, and cooperates with the action of the ultrasonic conduction rod to achieve the synergistic effect of ultrasonic cavitation and hydraulic cavitation of the soy milk raw material; S2, the soymilk raw material after cavitation enters the conical enzymolysis tank from the annular discharge pipe. After the soymilk raw material is added, the driving part is immediately started to drive the conical enzymolysis tank to rotate, and the enzymolysis medium is added into the reaction barrel simultaneously, so that the soymilk raw material and the enzymolysis medium are mixed. At the same time, while the conical enzymolysis tank rotates, the soymilk raw material and the enzymolysis medium can be circulated into the reaction barrel for cavitation treatment again; S3. After a certain period of continuous circulation, the soymilk raw material is processed and discharged from the conical enzymatic hydrolysis tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: through the arrangement 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 realize enzymolysis and hydrolysis, thereby realizing the pre-cavitation treatment of the soymilk raw material; at the same time, when performing mixed enzymolysis and hydrolysis, the soymilk raw material and the enzymolysis medium can be circulated into the reaction barrel for multiple times and then subjected to subsequent cavitation treatment, thereby making the soymilk raw material cavitated thoroughly, thereby improving the treatment efficiency; secondly, when the soymilk raw material passes through the slit (Venturi effect), hydraulic cavitation is realized, and the formation of cavitation microbubbles is strengthened in combination with the effect of ultrasonic cavitation, thereby improving the overall cavitation effect of the reaction system, thereby improving the efficiency of subsequent enzymolysis and hydrolysis, thereby effectively avoiding the problem of ultrasonic penetration caused by directly acting the ultrasonic device in the enzymolysis tank. The invention solves the problems of poor permeability and uneven contact with soybean milk raw materials, resulting in poor cavitation effect; after the soybean milk raw materials enter the impact chamber, they are accelerated along the inner wall of the impact chamber and the gap between the cone-shaped heads to impact toward the second arc-shaped guide surface, and then the flow direction is changed along the second arc-shaped guide surface, and converges with the spherical surface to achieve the collision of the soybean milk raw materials, so as to increase the turbulence and flow speed of the soybean milk raw materials, thereby further increasing the cavitation effect, increasing the number of cavitation microbubbles while strengthening the vibration and explosion intensity of the bubbles, and achieving the whole process of microbubble generation to explosion Intensification, so as to improve the overall efficiency of cavitation treatment; the present invention integrates ultrasonic cavitation, hydraulic cavitation and enzymatic hydrolysis processes, reduces the complexity of traditional distribution operations, and optimizes the synergistic effect of ultrasonic cavitation and hydraulic cavitation, effectively improving the treatment effect of soybean milk raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an ultrasound-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Figure 2 It is a schematic structural diagram of another angle of the ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Figure 3 A front view of an ultrasound-coupled enzymatic hydrolysis device for preparing freeze-dried soybean powder; Figure 4 A top view of a conical enzymolysis tank and a reaction barrel in an ultrasonic-coupled enzymolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Figure 5 for Figure 4 Cross-section view in the AA direction; Figure 6 for Figure 5 A magnified view of the structure at C in the middle; Figure 7 A schematic diagram of the structure of a conical enzymatic hydrolysis tank in an ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Figure 8 for Figure 7 A cross-sectional stereogram in the middle BB direction; Fig. 9 A schematic diagram of the connection state of the reaction barrel and the circulation component in the ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Fig.10 A schematic diagram of the connection state of the reaction barrel and the circulation component from another angle in the ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Fig.11 It is a schematic diagram of the separation state of the conical enzymolysis tank, the receiving part, the connecting sleeve and the cover body in the ultrasonic coupled enzymolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Fig.12 It is a schematic diagram of the connection state of the first reflux pipe, the reaction barrel and the annular discharge pipe in the ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Fig.13 It is a top view of the connection state of the first reflux pipe, the reaction barrel and the annular discharge pipe in the ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder; Fig.14 for Fig.13 Cross-section in the middle DD direction; Fig.15 for Fig.14 Enlarged view of the structure at E in the middle.

[0018] In the figure: 1-frame, 2-mounting plate, 3-support wheel, 4-motor, 5-support frame, 6-cover body, 7-connecting sleeve, 8-fixing part, 9-feeding port, 10-ultrasonic generator, 11-first reflux pipe, 12-driving gear, 13-ring gear, 14-circulating pump, 15-second reflux pipe, 16-enzyme hydrolysis tank, 17-ultrasonic transmission rod, 1701-conical head, 18-discharge valve, 19-first arc-shaped guide surface, 20-reaction barrel, 2001-conical guide plate, 2002-cylindrical barrel, 21-annular discharge pipe, 22-connecting pipe, 23-impact chamber, 2301-second arc-shaped guide surface, 24-nozzle, 25-heat exchange tube, 26-annular extension. DETAILED DESCRIPTION

[0019] 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 accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0020] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0021] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0022] See also Figure 1-Figure 15 In an embodiment of the present invention, an ultrasonic coupled enzymolysis synergistic hydrolysis device for preparing freeze-dried soy powder includes a frame 1 and a conical enzymolysis tank 16 installed on the frame 1 and driven by a driving member to rotate relative to the frame 1, a discharge valve 18 for discharging is installed at the bottom of the conical enzymolysis tank 16, and also includes: a reaction barrel 20 placed in the conical enzymolysis tank 16, when the conical enzymolysis tank 16 rotates, the soy milk raw material can be driven into the reaction barrel 20, and the bottom of the reaction barrel 20 is connected with a connecting pipe 22 that penetrates 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 is connected to the annular discharge pipe 21 through a circulation component; an ultrasonic generator 10, an ultrasonic wave 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.

[0023] The soymilk raw materials are continuously added into the reaction barrel 20, and the soymilk raw materials in the reaction barrel 20 are drained into the connecting pipe 22 through the circulation component. The soymilk raw materials are ultrasonically cavitated through the ultrasonic transmission rod 17 in the connecting pipe 22. The cavitated soymilk raw materials enter the conical enzymolysis tank 16 from the annular discharge pipe 21. After the soymilk raw materials are added, the driving part is immediately started to drive the conical enzymolysis tank 16 to rotate. While the conical enzymolysis tank 16 is rotating, the soymilk raw materials can be transported into the reaction barrel 20, and the enzymolysis medium is added into the reaction barrel 20 at the same time, so that the soymilk raw materials and the enzymolysis medium are preliminarily mixed, and then the soymilk raw materials and the enzymolysis medium are circulated into the reaction barrel 20 for cavitation treatment again.

[0024] In the present embodiment, by setting the reaction barrel 20 and the conical enzymolysis tank 16, the initially added soy milk raw material is first subjected to cavitation treatment and then enters the conical enzymolysis tank 16 to cooperate with the enzymolysis medium to realize enzymolysis and hydrolysis, thereby realizing the pre-cavitation treatment of the soy milk raw material. At the same time, when the mixed enzymolysis and hydrolysis are carried out, the soy milk raw material and the enzymolysis medium can be circulated into the reaction barrel 20 for multiple times and then subjected to subsequent cavitation treatment, so that the soy milk raw material is thoroughly cavitated to improve the processing efficiency; secondly, in the present embodiment, when the soy milk raw material passes through the slit (Venturi effect), hydraulic cavitation is realized, and the formation of cavitation microbubbles is strengthened in combination with the effect of ultrasonic cavitation, thereby improving the overall cavitation effect of the reaction system, thereby improving the subsequent enzymolysis and hydrolysis efficiency, and effectively avoiding the problem that the ultrasonic equipment is directly applied to the enzymolysis tank, resulting in poor ultrasonic penetration, and the uneven contact with the soy milk raw material, resulting in poor cavitation effect.

[0025] At the same time, in order to enhance the mixing effect of the soy milk raw material and the enzymatic hydrolysis medium, the inner wall of the conical enzymatic hydrolysis tank 16 is designed with spiral protrusions, which can effectively promote the mixing of the soy milk raw material and the enzymatic hydrolysis medium when the conical enzymatic hydrolysis tank 16 rotates, ensure the uniformity of the enzymatic hydrolysis and hydrolysis reactions, and increase the force of the soy milk raw material moving upward along the side wall of the conical enzymatic hydrolysis tank 16.

[0026] For further information, see Figure 4-Figure 6 The connecting pipe 22 is provided with an impact cavity 23, and a second arc-shaped guide surface 2301 is formed in the impact cavity 23 at a position facing the flow direction of the soy milk raw material; the cone-shaped head 1701 arranged at the end of the ultrasonic transmission rod 17 extends into the impact cavity 23, and the bottom of the cone-shaped head 1701 forms a spherical position for converging and redirecting the soy milk raw material passing through the second arc-shaped guide surface 2301.

[0027] When the soymilk raw material enters the impact chamber 23, it accelerates along the inner wall of the impact chamber 23 and the gap between the quasi-conical head 1701 to impact the second arc-shaped guide surface 2301, and then changes the flow direction along the second arc-shaped guide surface 2301 and converges with the spherical surface to achieve the collision of the soymilk raw material, so as to increase the turbulence and flow speed of the soymilk raw material, thereby further increasing the cavitation effect, increasing the number of cavitation microbubbles while strengthening the oscillation and explosion intensity of the bubbles, and achieving the whole process of microbubble generation to explosion. Strengthening to improve the overall efficiency of cavitation treatment, at the same time, after the soymilk raw material is mixed with the enzymatic hydrolysis medium, the mixing effect is also increased to a certain extent after entering the impact chamber 23. In addition, the setting of the quasi-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, so that ultrasonic cavitation and hydraulic cavitation work more synergistically, and jointly improve the formation and explosion efficiency of cavitation microbubbles, and to a certain extent improve the subsequent enzymatic hydrolysis and hydrolysis reaction efficiency and product quality.

[0028] For further information, see Figure 5 , Figure 7 and Figure 8 A first arc-shaped guide surface 19 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.

[0029] When the conical enzymolysis tank 16 rotates, the soy milk raw material moves up along the inner wall of the conical enzymolysis tank 16 under the action of centrifugal force, and flows toward the reaction barrel 20 along the first arc-shaped guide surface 19, thereby realizing the transfer of the soy milk raw material between the conical enzymolysis tank 16 and the reaction barrel 20, which not only ensures that the soy milk 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, the upward movement process of the soy milk raw material along the inner wall of the conical enzymolysis tank 16 under the action of centrifugal force also increases the mixing degree of the soy milk raw material and the enzymolysis medium, further improving the enzymolysis efficiency.

[0030] 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, which provides a channel for the flow of the soymilk raw materials, ensuring that the soymilk raw materials can smoothly flow into the reaction barrel 20, realizing the circulation flow of the soymilk raw materials, and cooperating with ultrasonic cavitation and hydraulic cavitation, effectively avoiding the problem of incomplete enzymatic hydrolysis and insufficient hydrolysis caused by incomplete cavitation in the soymilk raw materials.

[0031] See also Figure 5 , Fig. 9 and Fig.10 The reaction barrel 20 includes a cylindrical barrel 2002 and a conical guide plate 2001 connected to the cylindrical barrel 2002. The bottom of the cylindrical barrel 2002 is connected to the connecting pipe 22. The upper end opening diameter of the conical guide plate 2001 is larger than the lower end opening diameter to form an inverted cone structure. The upper end opening of the conical guide plate 2001 has a passing area larger than the passing area of ​​the circular through hole formed by the guide end of the first arc-shaped guide surface 19. The conical guide plate 2001 is used to receive the soymilk raw material introduced by the first arc-shaped guide surface 19 and introduce it into the cylindrical barrel 2002.

[0032] Among them, a temperature control cavity is formed on the inner side of the cylindrical barrel 2002, and a heat exchange tube 25 for adjusting the temperature in 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 threaded 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. The heat exchange medium flows in the heat exchange tube 25 to adjust the temperature of the reaction system, thereby improving the overall cavitation effect.

[0033] For further information, please refer to 1- Figure 3 , Fig. 9 and Fig.10 The circulation component includes a circulation pump 14 installed on a mounting plate 2 fixed to the frame 1, and the circulation pump 14 has a liquid inlet end and a liquid outlet end, and the liquid inlet end and the liquid outlet end are respectively installed with a second reflux pipe 15 and a first reflux pipe 11; the 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; the end of the second reflux pipe 15 away from the circulation pump 14 is detachably connected to the connecting pipe 22 extending from the conical enzymolysis tank 16 and maintains a connected state.

[0034] When the circulating pump 14 is in operation, negative pressure is generated in the second reflux pipe 15, thereby draining the soymilk raw materials in the reaction barrel 20, so that the soymilk raw materials in the reaction barrel 20 flow along the connecting pipe 22 to the second reflux pipe 15, providing flow force for the soymilk raw materials in the reaction barrel 20, and the soymilk raw materials are cavitated in the reaction barrel 20 and the connecting pipe 22, and then enter the annular discharge pipe 21 along the first reflux pipe 11, and finally enter the conical enzymolysis tank 16 through the annular discharge pipe 21, so that the soymilk raw materials are repeatedly subjected to ultrasonic and hydraulic cavitation-cyclic enzymolysis and hydrolysis treatment. In this process, the soymilk raw materials are cavitated in the reaction barrel 20, which can effectively improve the enzymolysis efficiency. At the same time, through the action of the circulating pump, the soymilk raw materials are continuously circulated in the system, ensuring the uniformity and sufficiency of the enzymolysis and hydrolysis processes.

[0035] In order to facilitate disassembly, the second return pipe 15 is detachably connected to the connecting pipe 22 via a clamp.

[0036] For further information, see Figure 8 and Fig.10 A plurality of nozzles 24 are equidistantly installed on the annular discharge pipe 21 along the circumferential direction, and the spraying direction of the nozzles 24 is perpendicular to the bottom of the conical enzymolysis tank 16. The soymilk raw materials entering the annular discharge pipe 21 are evenly sprayed to the bottom of the conical enzymolysis tank 16 through the plurality of nozzles 24, so that the soymilk raw materials are dispersed and enter. When the soymilk raw materials enter the conical enzymolysis tank 16, they impact with the soymilk raw materials originally in the conical enzymolysis tank 16, thereby improving the dispersion effect of the soymilk raw materials, further enhancing the dispersion effect and mixing uniformity of the soymilk raw materials in the conical enzymolysis tank 16, and improving the enzymolysis and hydrolysis efficiency.

[0037] Please note that Figure 12-Figure 15 The first reflux pipe 11 is extended into the reaction barrel 20 and fixed to the bottom of the reaction barrel 20, and the inner side of the first reflux pipe 11 is connected to the inside of the annular discharge pipe 21, so that the soy milk raw material or the mixture of the soy milk raw material and the enzymatic hydrolysis medium flowing along the first reflux pipe 11 directly enters the annular discharge pipe 21 and directly enters the conical enzymatic hydrolysis tank 16 through the nozzle 24.

[0038] In order to achieve stable rotation of the conical enzymolysis tank 16, please refer to Figure 1-Figure 3 and Fig.11 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 the 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. Preferably, the upper end surface of the receiving frame 5 can be provided with a plurality of rollers or balls equidistantly along the circumference, and the annular extension piece 26 is in rolling contact with the rollers or balls, thereby reducing the friction between the annular extension piece 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.

[0039] The receiving frame 5 can also be detachably fixed with a connecting sleeve 7 which is sleeved with the conical enzymolysis tank 16, and a gap is formed between the connecting sleeve 7 and the receiving frame 5 for placing the annular extension piece 26; the connecting sleeve 7 is provided with a cover body 6 for blocking the upper port of the conical enzymolysis tank 16, and the cover body 6 is provided with a feed port 9, and the provided connecting sleeve 7 is used to connect the cover body 6 for blocking the conical enzymolysis tank 16, so as to ensure that the port of the conical enzymolysis tank 16 is kept blocked during the continuous rotation of the conical enzymolysis tank 16, and prevent the rotation of the conical enzymolysis tank 16 from being affected by the setting of the cover body 6, and at the same time, the gap between the connecting sleeve 7 and the receiving frame 5 provides a movable space for the annular extension piece 26, further ensuring the smoothness of the rotation of the conical enzymolysis tank 16, and the feed port 9 on the cover body 6 ensures that the soymilk raw materials can accurately and efficiently enter the interior of the conical enzymolysis tank 16, thereby improving the efficiency and quality of the entire enzymolysis process.

[0040] It should be supplemented that a connecting rod is installed on the conical guide plate 2001, and the connecting rod is arranged in an L-shaped structure, which is used to fix the conical guide plate 2001 and the connecting sleeve 7, so as to stably support the reaction barrel 20. At the same time, considering the subsequent disassembly, the conical guide plate 2001 and the cylindrical barrel 2002 are arranged in a detachable connection state, including but not limited to the following installation methods: the lower bottom edge of the conical guide plate 2001 extends toward the inner side of the cylindrical barrel 2002 with a connecting block, and the connecting block is used to be fixed to the inner wall of the cylindrical barrel 2002 with bolts.

[0041] See also Figure 1-Figure 3The driving member includes 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 the output shaft of the reducer, the driving gear 12 is meshed with a ring gear 13 mounted on the conical enzymolysis tank 16, the motor 4 drives the reducer to move, the reducer drives the driving gear 12 to rotate, thereby cooperating with the action of the ring gear 13 to drive the conical enzymolysis tank 16 to rotate, so as to achieve the driving demand.

[0042] In order to ensure the stability of the conical enzymolysis tank 16 during rotation, a plurality of support wheels 3 are also installed on the mounting plate 2, and the support wheels 3 are in rolling contact with the side walls of the conical enzymolysis tank 16. Preferably, the plurality of support wheels 3 are equidistantly distributed around the conical enzymolysis tank 16 along the circumferential direction.

[0043] The ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis method for preparing freeze-dried soy powder adopts the ultrasonic coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soy powder as described above, comprising the following steps: S1, start the ultrasonic generator 10 and the circulation component, then continuously add the soy milk raw material into the reaction barrel 20, and drain the soy milk raw material in the reaction barrel 20 into the connecting pipe 22 through the circulation component. The soy milk raw material passes through the slit to increase the flow speed of the soy milk raw material, and cooperates with the ultrasonic conduction rod 17 to achieve the synergistic effect of ultrasonic cavitation and hydrodynamic cavitation of the soy milk raw material; 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 added into the reaction barrel 20 simultaneously, so that the soymilk raw material and the enzymolysis medium are mixed. At the same time, while the conical enzymolysis tank 16 rotates, the soymilk raw material and the enzymolysis medium can be circulated into the reaction barrel 20 for cavitation treatment again; S3, after a certain period of continuous circulation, the soymilk raw material is processed and discharged from the conical enzymolysis tank 16.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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) is placed in the conical enzymolysis tank (16), and when the conical enzymolysis tank (16) rotates, it can drive the soy milk raw materials into the reaction barrel (20); the bottom of the reaction barrel (20) is connected to a connecting pipe (22) that penetrates the conical enzymolysis tank (16) and rotates with the conical enzymolysis tank (16); an annular discharge pipe (21) is installed at the bottom of the reaction barrel (20), and the connecting pipe (22) is connected to the annular discharge pipe (21) through a circulation component; an ultrasonic generator (10), and an ultrasonic wave 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).

2. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: The connecting pipe (22) is provided with an impact cavity (23), and a second arc-shaped flow guide surface (2301) in an annular shape is formed in the impact cavity (23) at a position facing the flow direction of the soy milk raw material; a quasi-conical head (1701) provided at the end of the ultrasonic wave conduction rod (17) extends into the impact cavity (23), and the bottom of the quasi-conical head (1701) forms a spherical position for redirecting the flow of the soy milk raw material passing through the second arc-shaped flow guide surface (2301).

3. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: A first arc-shaped guide surface (19) in the form of an annulus 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.

4. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 3, characterized in that: The reaction barrel (20) comprises a cylindrical barrel (2002) and a conical guide plate (2001) connected to the cylindrical barrel (2002); the bottom of the cylindrical barrel (2002) is connected to the connecting pipe (22); a temperature control cavity is formed on the inner side of the cylindrical barrel (2002), and a heat exchange tube (25) for adjusting the temperature in the temperature control cavity is arranged in the temperature control cavity.

5. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 1, characterized in that: The circulation assembly comprises: a circulation pump (14) mounted 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 the liquid inlet end and the liquid outlet end are respectively mounted with a second reflux pipe (15) and a first reflux pipe (11); an 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); an 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.

6. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 5, 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).

7. 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).

8. The ultrasonic-coupled enzymatic hydrolysis synergistic hydrolysis device for preparing freeze-dried soybean powder according to claim 7, 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 placing the annular extension member (26); a cover body (6) for sealing the upper port of the conical enzymolysis tank (16) is installed on the connecting sleeve (7), and a feed port (9) is provided on the cover body (6).

9. 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).

10. A method for preparing freeze-dried soybean powder by using ultrasound-coupled enzymatic hydrolysis synergistic 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 9 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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