Macroscopic high-shear dispersion emulsification machine and reaction kettle comprising same

Abstract

This invention provides a high-shear dispersion emulsifier with strong macroscopic flow and a reaction vessel including the same. The high-shear dispersion emulsifier includes: a motor mounted on top of a coupling; a stator mounted on top of the coupling, the stator including a cylindrical sidewall with multiple eccentric teeth arranged at intervals around the upper end of the cylindrical sidewall; and multiple straight teeth arranged at intervals around the lower end of the sidewall of the rotor body. The straight teeth and eccentric teeth mesh with each other. One end of the main drive shaft is connected to the shaft of the motor, and the other end passes through the coupling and stator, connecting to the rotor. The motor drives the main drive shaft to drive the rotor to rotate at high speed. This invention eliminates the need for an additional mixer, simultaneously possessing microscopic dispersion emulsification capabilities and excellent macroscopic flow characteristics. It can improve material handling efficiency, reduce equipment investment costs, energy consumption costs, and maintenance costs, and also reduce the input of manpower and resources.

Description

Technical Field

[0001] This utility model relates to the field of fluid processing equipment, and in particular to a high-shear dispersion emulsifier with macroscopic strong flow and a reaction vessel including the same. Background Technology

[0002] In existing technologies, high-shear dispersing emulsifiers are widely used process intensification equipment in industries such as chemical, pharmaceutical, food, and pesticides, primarily for the dispersion, emulsification, and crushing of materials. This equipment typically consists of components such as a motor, main drive shaft, rotor, and stator. The high shear force generated between the high-speed rotating rotor and the stationary stator causes intense shearing of the material within a narrow gap, generating significant localized energy and ultimately achieving dispersion, emulsification, and crushing effects.

[0003] Mixing, dispersing, and emulsifying processes are all specific manifestations of process intensification and are widely present in various chemical production fields. As core production factors, they often have a significant impact on product quality, production efficiency, and overall economic benefits.

[0004] However, the conventional implementation is a high-shear dispersing emulsifier installed at the bottom or top of the reactor to mix, disperse and emulsify materials in batches. The evaluation criteria usually include several aspects: 1) high uniformity of the finished product and high consistency of sampling results from various locations; 2) the particle size of the finished product meets the requirements; 3) the finished product has high stability and does not exhibit stratification or other phenomena over time.

[0005] Currently, most high-shear dispersion emulsifiers on the market adopt a rotor-stator structure. However, existing high-shear dispersion emulsifiers generally suffer from dead zones and insufficient macroscopic flow when dealing with high-volume, high-viscosity, and elongated container scenarios. This is mainly because while traditional high-shear dispersion emulsifiers have strong shearing capabilities at the microscale, they often lack sufficient fluid driving capabilities at the macroscale, i.e., insufficient macroscopic fluid flux, which prevents the material within the container from forming an effective overall circulation flow.

[0006] Especially when processing high-viscosity materials or operating in long and narrow containers, dead zones of flow can easily form at the far ends or corners of the container, preventing the material in these areas from being fully processed. This results in the inability to guarantee a uniform strengthening effect or requires a longer processing time to meet the requirements.

[0007] To address this issue, industrial production typically adds one or more mixers to a high-shear dispersion emulsifier to reduce dead zones and improve macroscopic circulation. However, this approach not only increases equipment investment, energy, and maintenance costs, but also requires more manpower and resources for operation and management, reducing production efficiency and increasing overall production costs.

[0008] In view of this, the present invention relates to a high-shear dispersion emulsifier with macroscopically strong flow and a reaction vessel including the emulsion, in order to overcome the above-mentioned technical problems. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the defects of high shear dispersion emulsifiers in the prior art, such as processing dead zones and poor macroscopic flow in scenarios with large throughput, high viscosity and slender containers, and to provide a high shear dispersion emulsifier with strong macroscopic flow and a reaction vessel including the same.

[0010] The present invention solves the above-mentioned technical problems through the following technical solution:

[0011] A high-shear dispersion emulsifier with macroscopically strong flow characteristics, characterized in that the high-shear dispersion emulsifier comprises:

[0012] A motor and a coupling, wherein the coupling is mounted above the motor;

[0013] The stator and rotor are provided. The stator is mounted above the coupling. The stator includes a cylindrical sidewall. The upper end of the cylindrical sidewall is surrounded by a plurality of eccentric teeth arranged at intervals. The lower end of the sidewall of the rotor body is surrounded by a plurality of straight teeth arranged at intervals. The straight teeth and the eccentric teeth mesh with each other.

[0014] The main drive shaft has one end connected to the motor shaft and the other end passing through the coupling and the stator, and connected to the rotor. The motor drives the main drive shaft to drive the rotor to rotate at high speed.

[0015] According to one embodiment of the present invention, the tooth groove between two adjacent eccentric teeth is offset by a distance n from the center line of the cross section of the cylindrical sidewall in a plane angle direction perpendicular to the cylindrical sidewall, and the offset direction is opposite to the rotation direction of the stator.

[0016] According to one embodiment of the present invention, the distance n is 1 / 20 to 1 / 5 of the cross-sectional diameter of the cylindrical sidewall.

[0017] According to one embodiment of the present invention, the depth of the tooth groove is 1 / 4 to 1 / 6 of the working height of the stator.

[0018] According to one embodiment of the present invention, the rotor further includes a plurality of inclined claws, one end of which is fixed to the rotor body and the other end extends outward to surround the outer wall of the rotor body;

[0019] When the straight teeth of the rotor mesh with the eccentric teeth of the stator, the inclined claws wrap around the cylindrical sidewalls of the stator.

[0020] According to one embodiment of the present invention, the inclined surface of the inclined claw has an angle between the inclined surface and the horizontal plane, the angle being 15° to 60°.

[0021] According to one embodiment of the present invention, the included angle is 15°, 20°, 25°, 30°, 35°, 45°, or 60°.

[0022] According to one embodiment of the present invention, the high-shear dispersion emulsifier further includes a mechanical seal, which is installed below the stator, and the main drive shaft passes through the coupling and the mechanical seal.

[0023] According to one embodiment of the present invention, the stator further includes a fixed flange, the cylindrical sidewall is fixed on the fixed flange, and the fixed flange is connected to the upper flange face of the assembly.

[0024] This invention also provides a reaction vessel, characterized in that the reaction vessel includes the macroscopically powerful flow high-shear dispersion emulsifier as described above.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] This invention relates to a high-shear dispersion emulsifier with strong macroscopic flow and a reaction vessel including the present invention. It eliminates the need for an additional mixer and simultaneously possesses microscopic dispersion emulsification capabilities and excellent macroscopic flow characteristics. This improves material handling efficiency, reduces equipment investment costs, energy consumption costs, and maintenance costs, and also reduces the input of human and material resources. Attached Figure Description

[0027] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0028] Figure 1 This is a perspective view of the high-shear dispersion emulsifier with macroscopically strong flow according to this utility model.

[0029] Figure 2 This is a schematic diagram of the stator structure in the high-shear dispersion emulsifier with macroscopic strong flow of this utility model.

[0030] Figure 3 This is a cross-sectional schematic diagram of the cylindrical sidewall of the stator of the high-shear dispersion emulsifier with macroscopically strong flow characteristics of this utility model.

[0031] Figure 4 This is a front view of the cylindrical sidewall of the stator in the high-shear dispersion emulsifier with macroscopically strong flow according to this utility model.

[0032] Figure 5 This is a schematic diagram of the rotor structure in the high-shear dispersion emulsifier with macroscopic strong flow of this utility model.

[0033] Figure 6 This is a front view of the rotor in the high-shear dispersion emulsifier with macroscopically strong flow according to this utility model.

[0034] Figure 7 This is a schematic diagram of the mixing time detection of the high-shear dispersion emulsifier with macroscopic strong flow according to this utility model.

[0035] [Attached image labels]

[0036] Motor 10

[0037] Conjoined 20

[0038] Stator 30

[0039] Rotor 40

[0040] Main drive shaft 50

[0041] Mechanical seal 60

[0042] Fixed flange 31

[0043] Cylindrical sidewall 32

[0044] Eccentric tooth 33

[0045] 34 tooth grooves between eccentric teeth

[0046] Through hole 35

[0047] Rotor body 41

[0048] Inclined claw 42

[0049] Straight teeth 43 Detailed Implementation

[0050] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0051] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0052] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0053] Furthermore, it is required that this utility model be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0054] like Figures 1 to 7 As shown, this utility model discloses a high-shear dispersion emulsifier with macroscopically strong flow, comprising: a motor 10, a coupling 20, a stator 30, a rotor 40, and a main drive shaft 50. The coupling 20 is mounted above the motor 10. A flange face 21 is provided at the lower part of the coupling 20, which is connected to the flange of the motor 10. The stator 30 is mounted above the coupling 20. One end of the main drive shaft 50 is directly connected to the shaft of the motor 10, and the other end passes through the coupling 20 and the stator 30, connecting to the rotor 40. The motor 10 drives the main drive shaft 50, thereby causing the rotor 40 to rotate at high speed.

[0055] Preferably, the high-shear dispersion emulsifier further includes a mechanical seal 60, which is installed below the stator 30. The main drive shaft 50 passes through the coupling 20 and the mechanical seal 60. The mechanical seal 60 can preferably adopt a modular double-end structure for easy disassembly and maintenance. The main drive shaft 50 passes through the coupling 20 and the mechanical seal 60, and the upper end of the main drive shaft 50 is pressed against the rotor 40 by cap bolts.

[0056] like Figure 2 As shown, the stator 30 includes a fixed flange 31 and a cylindrical sidewall 32. The cylindrical sidewall 32 is fixed to the fixed flange 31, and the fixed flange 31 is connected to the upper flange face of the coupling 20. A plurality of eccentric teeth 33 are arranged at intervals around the upper end of the cylindrical sidewall 32. The eccentric teeth 33 can be used to control fluid flow.

[0057] Preferably, the groove 34 between two adjacent eccentric teeth 33 is offset by a distance n from the center line of the cross-section of the cylindrical sidewall 32 in a plane angle direction perpendicular to the cylindrical sidewall 32. By controlling the groove structure elements, the particle size index of the finished product and part of the fluid flux in the dispersion and emulsification effect can be controlled.

[0058] like Figure 3As shown, the distance n here can typically be preferably 1 / 20 to 1 / 5 of the cross-sectional diameter of the cylindrical sidewall 32. For example, when the cross-sectional diameter of the cylindrical sidewall 32 is 100, the distance n = 5 mm. Of course, the distance n can also be any value between 5 and 20 mm, such as 5 mm, 7 mm, 9 mm, 10 mm, 12 mm, 12.5 mm, 15 mm, 18 mm, and 20 mm.

[0059] At the same time, the offset direction of the eccentric tooth 33 is opposite to the rotation direction. For example, when viewed from above, the rotor rotates clockwise, but the offset is usually counterclockwise.

[0060] Furthermore, the groove width 'a', groove depth 'b', and number of grooves 'c' of the 32 grooves on the cylindrical sidewall are all adjustable structural elements. Typically, the groove width 'a' and the number of grooves 'c' jointly affect the fluid flux. Numerically, a larger groove width 'a' results in a smaller number of grooves 'c', leading to a larger flow rate and emphasizing the enhancement of local macroscopic flow. Conversely, a smaller groove width 'a' emphasizes the enhancement of local microscopic dispersion and emulsification.

[0061] like Figure 4 As shown, the groove depth b alone affects a portion of the fluid throughput. Typically, the depth of the groove 34 is 1 / 4 to 1 / 6 of the working height of the stator 30. For example, when the working height of the stator 30 is 60 mm, the groove depth b = 15 mm. Of course, the groove depth b can also be any value between 10 and 15 mm, such as 11 mm, 12.5 mm, 14 mm, and 15 mm. The larger the value, the greater the flow rate, and the more feasible it is to achieve a wide distribution of finished particle size, but it is more conducive to local circulation.

[0062] In addition, at least one through hole 35 is provided in the lower part of the cylindrical sidewall 32, through which the fluid flow rate can be controlled.

[0063] like Figure 5 As shown, the rotor 40 includes a rotor body 41 and multiple inclined claws 42. Multiple straight teeth 43 are arranged at intervals around the lower end of the sidewall of the rotor body 41. When the rotor 40 is installed with the stator 30, the straight teeth 42 and the eccentric teeth 33 mesh with each other. The grooves between adjacent straight teeth 43 can be used to control the finished particle size index and part of the fluid flux in the dispersion and emulsification effect. The grooves are typically at a plane angle perpendicular to the rotor prototype interface and do not have an offset from the cross-sectional centerline. The groove depth d is related to the groove depth b of the slot in the cylindrical sidewall 32 of the stator 30. For example, when the groove depth b = 20 mm, the groove depth d can preferably be any value between 15-21 mm, such as 15 mm, 17 mm, 20 mm, 21 mm, etc. A larger difference between d and b is more beneficial for increasing the local fluid flux, but it will cause the finished particle size to exhibit a wider distribution, i.e., an increase in the value of D90.

[0064] One end of the inclined claw 42 is fixed to the rotor body 41, and the other end extends outward to surround the outer wall of the rotor body 41. When the straight teeth 43 of the rotor 40 mesh with the eccentric teeth 33 of the stator 30, the inclined claw 42 wraps around the cylindrical sidewall 32 of the stator 30. In this embodiment, the inclined claw 42 focuses on achieving macroscopic strong flow. The inclined surface of the inclined claw 42 has an angle β with the horizontal plane, which is preferably 20°. Of course, the angle β can also take any value between 15° and 60°, such as 15°, 25°, 30°, 35°, 45°, and 60°. The high-shear dispersion emulsifier controls the drainage capacity of the macroscopic radial flow by adjusting the angle β. As the angle β increases, the cross-sectional projected area increases, increasing the ability to drive the radial flow. Combined with the downward pressure of the inclined surface, the drainage capacity of the axial flow in space is maintained.

[0065] Based on the above structural description, specific examples are as follows:

[0066] The stator 30 has a cross-sectional diameter of 100 mm, a working height of 60 mm, and an offset n of 5 mm. The slots 34 of the cylindrical sidewall 32 have a width a = 10 mm, a depth b = 15 mm, and a number of slots c = 8 mm. The rotor body 41 of the rotor 40 is a toothed structure that mates with the cylindrical sidewall 32 of the stator 30 and does not have an offset from the centerline of the cross-section. The slot depth d of the rotor 40 is 16 mm, and the angle β between the inclined surface of the inclined claw 42 of the rotor 40 and the horizontal plane is set to 20°.

[0067] Compared to traditional high-shear dispersion emulsifiers (stator slotted structure offset value n=0mm, cylindrical sidewall slot width a=5mm, slot depth b=15mm, slot depth c=20mm. Rotor inner main body toothed structure slot depth d=15, rotor has no tilting claw structure), it can significantly improve the macroscopic strong flow capability, specifically manifested in a significant reduction in mixing time.

[0068] The detection method involves placing a tracer at the top of a container and setting a checkpoint at the bottom. After a certain period of time, the tracer can be detected at the checkpoint at the bottom of the container. This time is the mixing time for evaluating macroscopically strong flow capacity. Figure 7 As shown, the mixing time of the high-shear dispersion emulsifier with strong macroscopic flow is reduced by about 30%-50% compared with the traditional high-shear dispersion emulsifier, demonstrating that it can significantly improve the characteristics of strong macroscopic flow.

[0069] This invention also provides a reaction vessel comprising a high-shear dispersion emulsifier with macroscopically strong flow, as described above. The high-shear dispersion emulsifier is installed at the bottom of the reaction vessel, with the core working parts of the stator and rotor immersed in the material. Under the action of the rotor, the material undergoes violent up-and-down tumbling. The synergistic action of the rotor and stator forms a high-speed jet, which is discharged from the stator sidewall and lower openings. Simultaneously, the tumbling material re-enters the synergistic working zone. Due to the strong axial and radial flow generated by the rotor, the discharged material no longer settles to the bottom but is pushed upwards, thereby effectively eliminating flow dead zones located in the material areas on the sidewalls and above.

[0070] Meanwhile, the high-shear dispersion emulsifier relies on the shear capacity generated by synergistic action to achieve dispersion and emulsification with high local energy. This structure not only accelerates the mixing of materials but also completes particle deagglomeration and dissolution at the microscopic level. Furthermore, thanks to the strong macroscopic flow, the high-shear dispersion emulsifier achieves good material uniformity and particle microstructure within the same mixing time without the need for an agitator.

[0071] In summary, this utility model of a high-shear dispersion emulsifier with macroscopically strong flow capability is applicable to dispersion, emulsification, and mixing processes, and has the following advantages:

[0072] I. Through the double-layer structure design of the rotor, the toothed structure of the rotor body and the slotted structure of the cylindrical sidewall of the stator cooperate to achieve micro-dispersion emulsification, while the tilting claws generate strong macro-flow, effectively improving the macro-flow circulation volume and significantly reducing the mixing time. Compared with existing technologies, under the same processing conditions, the mixing time can be shortened by 30%-50%.

[0073] Second, the trapezoidal design of the inclined claw can effectively guide the material to generate macroscopic flow, reduce the flow dead zone, and improve the flow uniformity, especially in slender containers and viscous material systems.

[0074] Third, the high-shear dispersion emulsifier described above can achieve both macroscopic flow and microscopic dispersion emulsification without the need for an additional mixer, thereby reducing equipment investment costs, energy consumption costs, and maintenance costs, and reducing the input of human and material resources.

[0075] Fourth, by adjusting the β angle of the tilting claw, the driving capability of the macroscopic radial flow can be flexibly controlled according to the needs of different processes, thus meeting the requirements of different application scenarios.

[0076] For those skilled in the art, the above disclosure of utility models is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0077] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0078] Similarly, it should be noted that, in order to simplify the description of the embodiments disclosed in this application and thus aid in the understanding of one or more embodiments of the utility model, the foregoing description of the embodiments of this application sometimes combines multiple features into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the object of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of the single embodiments disclosed above. Some embodiments use numbers describing the number of components or attributes; it should be understood that such numbers used in the description of embodiments are modified in some examples by the modifiers "approximately," "about," or "generally."

[0079] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A high-shear dispersion emulsifier with macroscopically strong flow characteristics, The high-shear dispersion emulsifier includes: A motor and a coupling, wherein the coupling is mounted above the motor; The stator and rotor are provided. The stator is mounted above the coupling. The stator includes a cylindrical sidewall. The upper end of the cylindrical sidewall is surrounded by a plurality of eccentric teeth arranged at intervals. The lower end of the sidewall of the rotor body is surrounded by a plurality of straight teeth arranged at intervals. The straight teeth and the eccentric teeth mesh with each other. The main drive shaft has one end connected to the motor shaft and the other end passing through the coupling and the stator, and connected to the rotor. The motor drives the main drive shaft to drive the rotor to rotate at high speed.

2. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 1, characterized in that, The tooth groove between two adjacent eccentric teeth is offset by a distance n from the center line of the cross section of the cylindrical sidewall in a plane angle direction perpendicular to the cylindrical sidewall, and the offset direction is opposite to the rotation direction of the stator.

3. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 2, characterized in that, The distance n is 1 / 20 to 1 / 5 of the cross-sectional diameter of the cylindrical sidewall.

4. The high-shear dispersion emulsifier with strong macroscopic flow as described in claim 2, characterized in that, The depth of the tooth groove is 1 / 4 to 1 / 6 of the working height of the stator.

5. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 1, characterized in that, The rotor also includes a plurality of tilting claws, one end of which is fixed to the rotor body and the other end extends outward to surround the outer wall of the rotor body; When the straight teeth of the rotor mesh with the eccentric teeth of the stator, the inclined claws wrap around the cylindrical sidewalls of the stator.

6. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 5, characterized in that, The inclined surface of the inclined claw has an angle between the inclined surface and the horizontal plane, the angle being 15° to 60°.

7. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 6, characterized in that, The included angles are 15°, 20°, 25°, 30°, 35°, 45°, and 60°.

8. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 1, characterized in that, The high-shear dispersion emulsifier also includes a mechanical seal, which is installed below the stator, and the main drive shaft passes through the coupling and the mechanical seal.

9. The high-shear dispersing emulsifier with strong macroscopic flow as described in claim 5, characterized in that, The stator also includes a fixed flange, the cylindrical sidewall is fixed to the fixed flange, and the fixed flange is connected to the upper flange face of the assembly.

10. A reaction vessel, characterized in that, The reactor includes a high-shear dispersing emulsifier with macroscopically strong flow as described in any one of claims 1-9.

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