High-speed shear mixing device and method for nut butter and milk powder

Abstract

This invention relates to the field of mixing technology, specifically to a high-speed shear mixing device and method for nut butter and milk powder, comprising: a tank; a main shaft rotatably disposed within the tank; and multiple stirring components spaced axially along the main shaft, wherein the multiple stirring components axially divide the internal space of the tank into alternating butter and powder chambers, and each stirring component includes multiple blades distributed circumferentially. This invention achieves precise switching between a first state and a second state by using a bevel gear transmission to drive the blades through differential speed cooperation between the main shaft and the drive shaft. When the blades are in the first state, the multiple blades are connected end-to-end, dividing the internal space of the tank into alternating butter and powder chambers, achieving macroscopic partitioned storage of the two materials. When the blades are in the second state, adjacent chambers are connected, and the blades rotate with the main shaft to forcibly stir and shear the materials, achieving thorough mixing of the butter and powder.

Description

Technical Field

[0001] This invention relates to the field of mixing technology, specifically to a high-speed shear mixing device for nut butter and milk powder, and a method for operating the high-speed shear mixing device for nut butter and milk powder. Background Technology

[0002] In the food processing industry, mixing nut butter and milk powder is a common production process, widely used in the preparation of baked goods, nutritional meal replacements, and solid beverages. Nut butter is a high-viscosity semi-fluid material with poor flowability; while milk powder is a lightweight powder material with small particle size, easy to fly, and easy to absorb moisture, making it technically challenging to mix the two evenly. Summary of the Invention

[0003] This invention addresses the problems in the prior art by providing a high-speed shear mixing device and method for nut butter and milk powder, the specific technical solution of which is as follows: On the one hand, this application provides a high-speed shear mixing device for nut butter and milk powder, comprising: Tank body; A main shaft rotatably mounted inside the tank; Multiple stirring components are spaced apart along the main shaft. The multiple stirring components divide the internal space of the tank into alternating sauce chambers and powder chambers along the axial direction. Each stirring component includes multiple blades distributed circumferentially. Each blade is rotatably connected to the main shaft through a secondary shaft. One end of the secondary shaft extends into the main shaft and is connected to a driven bevel tooth. The blade has a first state and a second state. A drive shaft is rotatably disposed inside the tank. The drive shaft is coaxially disposed inside the main shaft. Multiple active bevel teeth are provided along the outer axial direction of the drive shaft. Each of the multiple active bevel teeth corresponds to one of the multiple stirring components. In a set of stirring components and active bevel teeth that correspond to each other, the active bevel teeth simultaneously engage all the driven bevel teeth. When the drive shaft and the main shaft rotate at different speeds, the blade is driven to switch between the first state and the second state through the meshing of the active bevel teeth and the driven bevel teeth. When the drive shaft and the main shaft rotate at the same speed, the blade maintains the current state. In the first state, the blades are in a horizontal position, and all the blades cooperate with each other to separate the adjacent sauce cavity and powder cavity; In the second state, the blade is detached from the horizontal position and is tilted. The adjacent sauce chamber and powder chamber are interconnected. When the blade rotates with the main shaft, the sauce and powder are mixed.

[0004] As a further technical solution of the present invention, the cross-section of the main shaft is a regular polygonal structure, and the number of its sides is the same as the number of blades in the same stirring assembly.

[0005] As a further technical solution of the present invention, the end walls of two adjacent blades that come into contact with each other are inclined structures that cooperate with each other.

[0006] As a further technical solution of the present invention, the blade includes: The motherboard has an inner end connected to the sub-shaft and a sub-board slot opened at the outer end of the motherboard. A sub-plate, which is slidably connected in the sub-plate groove, and has threaded holes; The screw is rotatably disposed within the main board, with one end of the screw threaded into the threaded hole and the other end extending into the main shaft and connected to a gear. It also includes a toothed ring fixedly installed on the inner wall of the tank, the inner side of which has a toothed block area and a blank area distributed circumferentially; When the blade rotates around the secondary shaft and changes its posture, the gear revolves with the blade. When the gear moves to mesh with the tooth block area, it rotates on its own axis and drives the secondary plate to extend or retract relative to the main plate through the screw.

[0007] As a further technical solution of the present invention, when the blade switches from the first state to the second state, the gear enters the tooth block area and rotates along the first direction, driving the sub-plate to retract into the main plate; when the blade returns from the second state to the first state, the gear enters the tooth block area and rotates along the second direction opposite to the first direction, driving the sub-plate to extend outward from the main plate.

[0008] As a further technical solution of the present invention, when the blade is in the first state, the gear corresponds to the blank area of ​​the gear ring in the circumferential direction.

[0009] As a further technical solution of the present invention, it also includes a drive assembly, which includes a motor one and a motor two. The motor one is drivenly connected to the main shaft, and the motor two is drivenly connected to the drive shaft, so that the main shaft and the drive shaft can be driven independently of each other.

[0010] As a further technical solution of the present invention, it also includes a feeding assembly and a discharge pipe disposed at the bottom of the tank, wherein the feeding assembly includes: The sauce pipeline includes a sauce storage hopper, a sauce manifold, and multiple sauce branch pipes. The number and position of the sauce branch pipes correspond to the sauce cavity. The sauce manifold connects all the sauce branch pipes in series, and the sauce storage hopper is connected to the top of the sauce manifold. The powder pipeline includes a powder storage hopper, a powder manifold, and multiple powder branch pipes. The number and position of the powder branch pipes correspond to the powder cavity. The powder manifold connects all the powder branch pipes in series, and the powder storage hopper is connected to the top of the powder manifold. One-way valves are installed at the outlets of both the sauce branch pipe and the powder branch pipe.

[0011] On the other hand, the present invention also provides a method for operating a high-speed shear mixing device for nut butter and milk powder, comprising the following steps: Step 1: Inject materials into the tank through the feeding assembly, so that the nut butter enters each butter chamber and the milk powder enters each powder chamber. At this time, the blades are in the first state, and the butter chamber and the powder chamber are isolated from each other. Step 2: Control the differential rotation of the drive shaft and the main shaft, and drive the blades to switch from the first state to the second state through the meshing of the active bevel teeth and the driven bevel teeth, so that the adjacent sauce chamber and powder chamber are connected to each other. Step 3: Keep the drive shaft and the main shaft rotating at the same speed, so that the blades remain in the second state and the material is stirred and mixed as the main shaft rotates. Step 4: After mixing is complete, discharge the mixture through the discharge pipe.

[0012] As a further technical solution of the present invention, in step two, when the blade switches from the first state to the second state, the gear at the tail of the blade enters the tooth block area of ​​the toothed ring and rotates, driving the sub-plate to retract into the main plate, so as to avoid friction between the blade and the inner wall of the tank; in step four, when the blade returns from the second state to the first state, the gear at the tail of the blade re-enters the tooth block area of ​​the toothed ring and rotates in the opposite direction, driving the sub-plate to extend outward from the main plate, thereby strengthening the sealing and isolation of the sauce cavity and powder cavity by the blade.

[0013] The beneficial effects of this invention are as follows: (1) This invention achieves precise switching between the first state (horizontal separation) and the second state (tilted mixing) of the blades by using bevel gear transmission to drive the blades to swing through differential speed coordination between the main shaft and the drive shaft. When the blades are in the first state, multiple blades are connected end to end to divide the inside of the tank into alternating sauce chambers and powder chambers, realizing macroscopic partitioned storage of the two materials and avoiding premature contact during the feeding stage and the mixing interval. When the blades are in the second state, the adjacent chambers are connected, and the blades rotate with the main shaft to forcefully stir and shear the materials, realizing full mixing of sauce and powder. This "partitioned storage-dynamic mixing" structural design fundamentally solves the problems of uncontrollable material contact timing and difficulty in segmented control of the mixing process in traditional mixing equipment.

[0014] (2) This invention achieves the function of automatic extension and retraction of the sub-plate as the blade swings by setting a retractable sub-plate on the blade and a toothed ring with a toothed block area and a blank area on the inner wall of the tank. Specifically, when the blade switches from the first state to the second state, the gear enters the toothed block area to drive the sub-plate to retract, so that the blade maintains a safe gap with the inner wall of the tank during high-speed rotation and mixing, avoiding the problem of material coking caused by friction wear and frictional heat generation; when the blade returns from the second state to the first state, the gear enters the toothed block area again to drive the sub-plate to extend, so that the outer edge of the sub-plate is close to the inner wall of the tank, which not only enhances the sealing effect of the blade in the first state, but also automatically scrapes and cleans the inner wall of the tank during the extension and retraction process. This intelligent adjustment mechanism of "retracting to avoid gaps when mixing and extending to seal when separating" integrates multiple functions of anti-wear, anti-coking, and enhanced sealing.

[0015] (3) This invention achieves "quantitative and synchronous injection" of nut butter and milk powder by means of a multi-point independent feeding pipeline design. The sauce branch pipeline and the powder branch pipeline are respectively connected to each sauce cavity and each powder cavity, which ensures the initial uniformity of the material distribution along the axial direction and avoids the problem of uneven axial distribution caused by traditional single-point feeding. The one-way valve set at the outlet of each branch pipeline effectively prevents the material from flowing back during the mixing process, ensuring the cleanliness of the feeding system and the accuracy of the metering, laying a good foundation for subsequent uniform mixing. Attached Figure Description

[0016] Figure 1 A schematic diagram of a high-speed shear mixing device for nut butter and milk powder is shown. Figure 2 A schematic diagram of the internal structure of the tank is shown; Figure 3 This diagram illustrates the distribution of sauces and powders inside the can. Figure 4 A schematic diagram of the blade in its first state is shown; Figure 5 A schematic diagram of the blade in its second state is shown. Figure 6 A schematic diagram of the structure of the stirring assembly and the drive shaft is shown; Figure 7 A schematic diagram of the structure of the motherboard and sub-board in operation is shown; Figure 8 It shows Figure 7 Enlarged view of point A in the image; Figure 9 A schematic diagram of the gear and gear ring structure is shown in the first state of the blade; Figure 10 A schematic diagram of the gear and gear ring structure in the second state of the blade is shown; Figure 11A schematic diagram of the drive component is shown.

[0017] 10. Can body; 11. Sauce cavity; 12. Powder cavity; 20. Spindle; 30. Stirring assembly; 31. Blade; 311. Main plate; 3111. Sub-plate groove; 312. Sub-plate; 3121. Threaded hole; 313. Screw; 3131. Gear; 32. Countershaft; 33. Driven bevel gear; 40. Drive shaft; 41. Active bevel gear; 50. Tooth ring; 51. Tooth block area; 52. Blank area; 60. Drive assembly; 61. Motor 1; 62. Motor 2; 70. Feeding assembly; 71. Sauce pipeline; 711. Sauce storage hopper; 712. Sauce manifold; 713. Sauce branch pipeline; 72. Powder pipeline; 721. Powder storage hopper; 722. Powder manifold; 723. Powder branch pipeline; 80. Discharge pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] This embodiment provides a high-speed shear mixing device for nut butter and milk powder, which aims to solve the problems of uneven mixing and low mixing efficiency of high-viscosity sauces (such as nut butter) and powders (such as milk powder) in the prior art.

[0020] The following combination Figures 1 to 11 It is described in detail.

[0021] In this embodiment, the high-speed shear mixing device for nut butter and milk powder includes a tank 10 as an outer container. The tank 10 is the main structure of the device, and its interior forms a sealed mixing space for containing the nut butter and milk powder and performing high-speed shear mixing. The tank 10 has a cylindrical structure to facilitate the installation of internal rotating components and the uniform flow of materials.

[0022] In this embodiment, a main shaft 20 is rotatably disposed at the center of the interior of the tank 10. The main shaft 20 extends along the axial direction of the tank 10, and both ends of the main shaft 20 are supported on the end caps of the tank 10 by bearings (not shown in the figure). The cross-section of the main shaft 20 is a regular polygonal structure. This design facilitates the installation and positioning of subsequent components and ensures that multiple components are evenly distributed in the circumferential direction, thereby generating a balanced shear force during rotation.

[0023] In this embodiment, multiple stirring components 30 are spaced apart along the axial direction of the main shaft 20. These stirring components 30 divide the annular space between the tank 10 and the main shaft 20 into alternating sauce chambers 11 and powder chambers 12. Specifically, the sauce chamber 11 is used to contain nut butter, and the powder chamber 12 is used to contain milk powder. The two are arranged alternately along the axial direction to form a macroscopic premix.

[0024] In this embodiment, each stirring assembly 30 includes a plurality of blades 31 distributed circumferentially along the main shaft 20; the number of sides of the main shaft 20 is the same as the number of blades 31 in the same stirring assembly 30. For example, when the main shaft 20 is a regular hexagon, each stirring assembly 30 includes six blades 31, which are respectively installed on the six sides of the main shaft 20; each blade 31 is rotatably connected to the main shaft 20 through a secondary shaft 32; one end of the secondary shaft 32 is fixedly connected to the blade 31, and the other end extends through the side wall of the main shaft 20 into the internal cavity of the main shaft 20, and a driven bevel tooth 33 is fixedly connected at this end; the blades 31 are designed to swing relative to the main shaft 20 in order to realize dynamic control of the communication state between the sauce chamber 11 and the powder chamber 12. When the blades 31 swing to a specific position, the channel between adjacent chambers can be closed or opened.

[0025] To achieve precise control of the oscillation, the device also includes a drive shaft 40 rotatably disposed within the tank 10 and located inside the main shaft 20; the drive shaft 40 is coaxially disposed with the main shaft 20, but the two are independent of each other and can rotate at different speeds; on the outer wall of the drive shaft 40, a plurality of active bevel teeth 41 are fixedly disposed axially, the number and position of the active bevel teeth 41 correspond one-to-one with the stirring assembly 30, in a corresponding set of stirring assemblies 30 and active bevel teeth 41, the active bevel teeth 41 simultaneously engage all the driven bevel teeth 33 extending from the wall of the main shaft 20.

[0026] The core logic of the dynamic control achieved by this invention lies in the rotational speed relationship between the drive shaft 40 and the main shaft 20. When there is a speed difference (i.e., differential rotation) between the drive shaft 40 and the main shaft 20, the meshing action of the active bevel tooth 41 and the driven bevel tooth 33 will force the blade 31 to oscillate around the secondary shaft 32; when the two rotate at the same speed, the active bevel tooth 41 and the driven bevel tooth 33 are relatively stationary, and the blade 31 maintains its current posture.

[0027] Based on the above principles, this invention defines two key operating states of blade 31: First state: such as Figure 4As shown, at this time, the blade 31 swings to a horizontal position (i.e., in the radial direction perpendicular to the main shaft 20). In this state, multiple blades 31 located in the same stirring assembly 30 are connected end to end and cooperate with each other, which completely blocks the annular channel between the tank 10 and the main shaft 20, thereby tightly separating the adjacent sauce chamber 11 and powder chamber 12. This separation state is used to prevent the two materials from contacting each other in advance at the initial stage of feeding, or to temporarily isolate them when mixing needs to be paused during the mixing process.

[0028] Second state: such as Figure 5 As shown, at this time, the blade 31 swings to an inclined state that is no longer horizontal. In this state, the adjacent sauce chamber 11 and powder chamber 12 are connected to each other through the space left by the swing of the blade 31. At this time, as the main shaft 20 rotates, the blade 31 will generate strong stirring and shearing action on the material, and push the material from one end to the other end to achieve full mixing of nut butter and milk powder.

[0029] Through this design, the device achieves an organic combination of "zoned storage" and "dynamic mixing". During operation, nut butter can be pre-injected into the sauce chamber 11 and milk powder can be pre-placed into the powder chamber 12 to form macroscopic pre-mixing. By utilizing the oscillation timing of the blades 31, the device can precisely control when the two materials come into contact and how they mix, avoiding the problems of powder flying, uneven coating of sauce, or loss of control over the mixing sequence in traditional mixing methods.

[0030] Furthermore, in order to achieve a better sealing and isolation effect when the blade 31 is in the first state, the end walls of the two adjacent blades 31 that come into contact with each other are designed as an inclined structure that cooperates with each other. This structure, which is similar to an inclined surface overlap, allows the adjacent blades to form a labyrinth seal when closed, which can effectively prevent the material from leaking from the blade gaps under the action of high pressure or high viscosity materials, ensuring the reliability of the partition and providing structural guarantee for precise control of the mixing ratio.

[0031] Considering that when the main shaft 20 drives the blades 31 to rotate at high speed, if the outer edge of the blades 31 maintains contact or a small gap with the inner wall of the tank 10 for a long time, it will not only cause severe friction and wear, increasing energy consumption, but may also cause the oils in the nut butter to caramelize and deteriorate due to frictional heat. To solve this problem, this invention improves the blades 31 themselves, enabling them to automatically adjust the distance between them and the inner wall of the tank according to the working state. Please refer to... Figures 5 to 7 The blade 31 specifically includes the following components: Main board 311: Main board 311 is the main structure of blade 31. Its inner end is fixedly connected to the secondary shaft 32, and its outer end has a secondary board groove 3111. Sub-plate 312: Sub-plate 312 is slidably connected in the sub-plate groove 3111 and can extend or retract relative to the main plate 311. The sub-plate 312 is provided with a threaded hole 3121. Screw 313: The screw 313 is rotatably disposed inside the main plate 311, and its axis is parallel to the sliding direction of the sub-plate 312. One end of the screw 313 is threadedly connected to the threaded hole 3121 of the sub-plate 312, and the other end extends out of the main plate 311 and into the spindle 20. A gear 3131 is connected to this end.

[0032] In conjunction with this, the device also includes a toothed ring 50 fixedly mounted on the inner wall of the tank 10. For example... Figure 8 As shown, the toothed ring 50 is a circular ring structure, with a toothed block area 51 and a blank area 52 distributed circumferentially on its inner side. The toothed block area 51 is an arc segment with meshing teeth, and the blank area 52 is a smooth arc segment without teeth.

[0033] The design principle and working process of this structure are as follows: When the blade 31 oscillates around the secondary shaft 32, the gear 3131 at its tail will also perform circular motion. When the gear 3131 moves to the position where it meshes with the tooth block area 51 of the gear ring 50, the gear 3131 is forced to rotate due to the relative motion between the revolution of the blade 31 and the stationary position of the gear ring 50. The rotation of the gear 3131 drives the screw 313 fixedly connected to it to rotate, which in turn drives the secondary plate 312 to extend or retract relative to the main plate 311 along the secondary plate groove 3111 through threaded transmission.

[0034] The core design logic of this invention lies in utilizing the specific motion direction of the blade 31 when switching between the first and second states, in conjunction with the distribution of the tooth block area 51 and the blank area 52 of the toothed ring 50, to achieve precise control over the extension state of the sub-plate 312: When blade 31 switches from the first state to the second state: blade 31 begins to tilt and oscillate around the secondary shaft 32. During this process, gear 3131 at the tail of blade 31 revolves with blade. When it enters the tooth block area 51 of the gear ring 50, as gear 3131 passes through the tooth block area in a specific direction, the gear 3131 meshing with it rotates forward, driving screw 313 to rotate, thereby causing secondary plate 312 to retract along secondary plate groove 3111 into main plate 311 and remain in the retracted state. At this time, a relatively large safety gap is maintained between the outer edge of main plate 311 and the inner wall of tank 10, completely avoiding frictional contact between blade and inner wall of tank during the upcoming high-speed rotational mixing process. This reduces energy consumption and wear, and prevents frictional heat from affecting material quality.

[0035] When blade 31 returns from the second state to the first state: blade 31 begins to swing back around the secondary shaft 32 to a horizontal position. During this process, gear 3131 at the tail of blade 31 re-enters the tooth block area 51 of the gear ring 50, but since the direction of movement of gear 3131 through the tooth block area is opposite to that before, the meshing gear 3131 reverses, driving screw 313 to rotate in the opposite direction, thereby causing secondary plate 312 to extend outward along secondary plate groove 3111, so that the outer edge of secondary plate 312 gradually approaches the inner wall of tank 10. When blade 31 has completely returned to the horizontal position of the first state, gear 3131 just leaves the tooth block area 51 and enters the blank area 52, secondary plate 312 stops moving and remains in the extended state.

[0036] Through this intelligent adjustment mechanism of "retracting to avoid collisions when mixing and extending the seal when separating", this device ensures both operational safety under high-speed mixing conditions and sealing reliability under static separation conditions.

[0037] To achieve independent control of the drive shaft 40 and the main shaft 20, this device also includes a drive assembly 60, which comprises a first motor 61 and a second motor 62. The first motor 61 is connected to the main shaft 20 via a transmission mechanism (such as a gearbox or coupling), and the second motor 62 is connected to the drive shaft 40 via a transmission mechanism. Both motors operate independently, allowing for separate control of their speed and direction. This design allows for precise switching between "same speed" and "differential speed" via the control system, and flexible adjustment of the magnitude, direction, and duration of the differential speed to adapt to materials of different viscosities and mixing ratios, greatly expanding the equipment's process adaptability. For example, when processing high-viscosity nut butter, the differential speed can be appropriately increased to obtain a larger blade oscillation angle, thereby increasing the material flow cross-section; when processing easily scattered milk powder, the blades can be controlled to oscillate slowly to avoid airflow disturbance.

[0038] To achieve continuous or semi-continuous production, this device also includes a feeding assembly 70 and a discharge pipe 80. The discharge pipe 80 is located at the bottom of the tank 10 and is used to discharge the mixed finished product. The feeding assembly 70 includes two independent pipelines for conveying the sauce and powder respectively. Sauce piping 71 includes a sauce storage hopper 711 for temporarily storing nut butter, a sauce manifold 712, and multiple sauce branch pipes 713. The number and location of the sauce branch pipes 713 correspond one-to-one with the sauce chambers 11 inside the tank 10, and the outlet of each sauce branch pipe 713 is connected to the corresponding sauce chamber 11. All sauce branch pipes 713 are connected to the sauce manifold 712, which in turn is connected to the sauce storage hopper 711 at the top.

[0039] Powder piping 72 includes a powder storage hopper 721 for temporary storage of milk powder, a powder manifold 722, and multiple powder branch pipes 723. The number and location of the powder branch pipes 723 correspond one-to-one with the powder chambers 12 inside the tank 10, and the outlet of each powder branch pipe 723 is connected to the corresponding powder chamber 12. All powder branch pipes 723 are connected to the powder manifold 722, which in turn is connected to the powder storage hopper 721 at the top.

[0040] Specifically, one-way valves (not shown in the figure) are installed at the outlets of both the sauce branch pipe 713 and the powder branch pipe 723. The reason for and the beneficial effect of this design is that, through the multi-point independent branch pipe structure, the nut butter and milk powder are "quantitatively and synchronously injected" into their respective chambers, ensuring the initial uniformity of material distribution along the axial direction and avoiding the uneven axial distribution problem caused by traditional single-point feeding. Furthermore, the one-way valves effectively prevent the pressurized mixture from flowing back into the feeding pipe during the mixing process under the agitation of the blades, ensuring the cleanliness of the feeding system, the accuracy of metering, and the independence of pressure between each chamber.

[0041] In summary, the high-speed shear mixing device for nut butter and milk powder provided in this embodiment achieves material partitioning and dynamic mixing by using the differential speed cooperation between the drive shaft 40 and the main shaft 20 and controlling the oscillation of the blades 31 through bevel gear transmission. By setting a retractable sub-plate 312 on the blades 31 and cooperating with the toothed ring 50, the extension and retraction of the sub-plate are automatically adjusted during the blade state switching process. When mixing is turned on, the sub-plate retracts to avoid friction and extends to strengthen the seal when the partition is turned off, which not only ensures the safety of high-speed mixing but also enhances the reliability of static partitioning. Through multi-point independent feeding and one-way valve design, the uniformity of the initial material distribution and the stability of the system are ensured.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A high-speed shear mixing device for nut butter and milk powder, characterized in that, include: Tank body; A main shaft rotatably mounted inside the tank; Multiple stirring components are spaced apart along the main shaft. The multiple stirring components divide the internal space of the tank into alternating sauce chambers and powder chambers along the axial direction. Each stirring component includes multiple blades distributed circumferentially. Each blade is rotatably connected to the main shaft through a secondary shaft. One end of the secondary shaft extends into the main shaft and is connected to a driven bevel tooth. The blade has a first state and a second state. A drive shaft is rotatably disposed inside the tank. The drive shaft is coaxially disposed inside the main shaft. Multiple active bevel teeth are provided along the outer axial direction of the drive shaft. Each of the multiple active bevel teeth corresponds to one of the multiple stirring components. In a set of stirring components and active bevel teeth that correspond to each other, the active bevel teeth simultaneously engage all the driven bevel teeth. When the drive shaft and the main shaft rotate at different speeds, the blade is driven to switch between the first state and the second state through the meshing of the active bevel teeth and the driven bevel teeth. When the drive shaft and the main shaft rotate at the same speed, the blade maintains the current state. In the first state, the blades are in a horizontal position, and all the blades cooperate with each other to separate the adjacent sauce cavity and powder cavity; In the second state, the blade is detached from the horizontal position and is tilted. The adjacent sauce chamber and powder chamber are interconnected. When the blade rotates with the main shaft, the sauce and powder are mixed.

2. The high-speed shear mixing device for nut butter and milk powder according to claim 1, characterized in that, The main shaft has a regular polygonal cross-section, and the number of its sides is the same as the number of blades in the same stirring assembly.

3. The high-speed shear mixing device for nut butter and milk powder according to claim 2, characterized in that, The end walls that meet between two adjacent blades are inclined structures that fit together.

4. The high-speed shear mixing device for nut butter and milk powder according to claim 3, characterized in that, The blade includes: The motherboard has an inner end connected to the sub-shaft and a sub-board slot opened at the outer end of the motherboard. A sub-plate, which is slidably connected in the sub-plate groove, and has threaded holes; The screw is rotatably disposed within the main board, with one end of the screw threaded into the threaded hole and the other end extending into the main shaft and connected to a gear. It also includes a toothed ring fixedly installed on the inner wall of the tank, the inner side of which has a toothed block area and a blank area distributed circumferentially; When the blade rotates around the secondary shaft and changes its posture, the gear revolves with the blade. When the gear moves to mesh with the tooth block area, it rotates on its own axis and drives the secondary plate to extend or retract relative to the main plate through the screw.

5. The high-speed shear mixing device for nut butter and milk powder according to claim 3, characterized in that, When the blade switches from the first state to the second state, the gear enters the tooth block area and rotates along the first direction, driving the sub-plate to retract into the main plate; when the blade returns from the second state to the first state, the gear enters the tooth block area and rotates along the second direction opposite to the first direction, driving the sub-plate to extend outward from the main plate.

6. The high-speed shear mixing device for nut butter and milk powder according to claim 5, characterized in that, When the blade is in the first state, the gear corresponds to the blank area of ​​the gear ring in the circumferential direction.

7. The high-speed shear mixing device for nut butter and milk powder according to claim 6, characterized in that, It also includes a drive assembly, which includes a motor one and a motor two. The motor one is driven to the main shaft, and the motor two is driven to the drive shaft, so that the main shaft and the drive shaft can be driven independently of each other.

8. The high-speed shear mixing device for nut butter and milk powder according to claim 1, characterized in that, It also includes a feeding assembly and a discharge pipe disposed at the bottom of the tank, the feeding assembly comprising: The sauce pipeline includes a sauce storage hopper, a sauce manifold, and multiple sauce branch pipes. The number and position of the sauce branch pipes correspond to the sauce cavity. The sauce manifold connects all the sauce branch pipes in series, and the sauce storage hopper is connected to the top of the sauce manifold. The powder pipeline includes a powder storage hopper, a powder manifold, and multiple powder branch pipes. The number and position of the powder branch pipes correspond to the powder cavity. The powder manifold connects all the powder branch pipes in series, and the powder storage hopper is connected to the top of the powder manifold. One-way valves are installed at the outlets of both the sauce branch pipe and the powder branch pipe.

9. The method of operating the high-speed shear mixing device for nut butter and milk powder according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Inject materials into the tank through the feeding assembly, so that the nut butter enters each butter chamber and the milk powder enters each powder chamber. At this time, the blade is in the first state, and the butter chamber and the powder chamber are isolated from each other. Step 2: Control the differential rotation of the drive shaft and the main shaft, and drive the blades to switch from the first state to the second state through the meshing of the active bevel teeth and the driven bevel teeth, so that the adjacent sauce chamber and powder chamber are connected to each other. Step 3: Keep the drive shaft and the main shaft rotating at the same speed, so that the blades remain in the second state and the material is stirred and mixed as the main shaft rotates. Step 4: After mixing is complete, discharge the mixture through the discharge pipe.

10. The method of operation of the high-speed shear mixing device for nut butter and milk powder according to claim 9, characterized in that, In step two, when the blade switches from the first state to the second state, the gear at the tail of the blade enters the tooth block area of ​​the gear ring and rotates, driving the sub-plate to retract into the main plate to avoid friction between the blade and the inner wall of the tank. In step four, when the blade returns from the second state to the first state, the gear at the tail of the blade re-enters the tooth block area of ​​the gear ring and rotates in the opposite direction, driving the sub-plate to extend outward from the main plate to strengthen the sealing and isolation of the sauce cavity and powder cavity by the blade.

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