High-shear dispersing and emulsifying machine with macroscopic powerful flowing function and reaction kettle comprising high-shear dispersing and emulsifying machine

Abstract

The invention provides a macroscopic efficient flowing high-shear dispersing and emulsifying machine and a reaction kettle comprising the same. The high-shear dispersing and emulsifying machine is characterized in that a conjoined body is mounted above a motor; the stator is installed above the connecting body and comprises a cylindrical side wall, and a plurality of eccentric teeth which are arranged at intervals are arranged at the upper end of the cylindrical side wall in a surrounding mode; a plurality of straight teeth which are arranged at intervals are arranged at the lower end part of the side wall of a rotor main body of the rotor in a surrounding manner; the straight teeth are matched and meshed with the eccentric teeth; one end of the main transmission shaft is connected with a rotating shaft of the motor, the other end of the main transmission shaft penetrates through the conjoined body and the stator and is connected with the rotor, and the motor drives the main transmission shaft to drive the rotor to rotate at high speed. According to the invention, a stirrer does not need to be additionally arranged, the microcosmic dispersing and emulsifying capacity and the good macroscopic flow characteristic can be simultaneously realized, the material treatment efficiency can be improved, the equipment investment cost, the energy consumption cost and the maintenance cost are reduced, and the investment of manpower and material resources is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid processing equipment, in particular to a macroscopic high-efficiency flow high-shear dispersion emulsifier and a reaction kettle comprising the same. BACKGROUND

[0002] In the prior art, the high-shear dispersion emulsifier is a process intensification equipment widely used in chemical, pharmaceutical, food, pesticide and other industries, mainly used for dispersion, emulsification and crushing of materials. Such equipment is usually composed of motor, main transmission shaft, rotor, stator and other components, and high shear force is formed between the high-speed rotating rotor and the fixed stator, so that the material in the narrow gap produces strong shear effect, thereby generating large local energy, and finally achieving the effect of dispersion, emulsification and crushing.

[0003] Mixing, dispersion and emulsification processes belong to specific forms of process intensification and exist widely in various chemical production fields. As a core production element, they often have an important impact on product quality, production efficiency and overall economic benefits.

[0004] However, the conventional implementation form is a high-shear dispersion emulsifier installed at the bottom or top of the reaction kettle to mix, disperse and emulsify the material in batches. The evaluation criteria generally include multiple aspects: 1) the uniformity of the finished product is high, and the sampling results at different places have high consistency; 2) the particle size of the finished product meets the requirements; 3) the finished product has high stability and does not separate over time.

[0005] At present, the high-shear dispersion emulsifiers commonly seen on the market mainly adopt rotor-stator structure. However, the existing high-shear dispersion emulsifiers generally have problems of processing dead zones and insufficient macroscopic flow when facing processing capacity scenarios, high viscosity scenarios and slender container scenarios. This is mainly because the traditional high-shear dispersion emulsifier has strong shear capacity at the microscale, but lacks sufficient fluid driving capacity at the macroscale, i.e., insufficient macroscopic fluid flux, resulting in the inability of the material in the container to form effective overall circulation flow.

[0006] Especially when processing high-viscosity materials or operating in a slender container, flow dead zones are easily formed in the far end or corner areas of the container, so that the materials in these areas cannot be fully processed, thereby failing to ensure uniform intensification effect or requiring a longer time to meet the processing requirements.

[0007] To solve this problem, one or more mixers are usually additionally matched with a high shear dispersion emulsifier in industrial production to reduce the flow dead zone and improve the macro circulation effect. However, this approach not only increases the equipment investment cost, energy consumption cost and maintenance cost, but also requires more manpower and resources for operation and management, reduces the production efficiency and increases the production cost.

[0008] Therefore, the present application inventors designed a high shear dispersion emulsifier with macro strong flow and a reaction kettle comprising the same to overcome the above technical problems. SUMMARY

[0009] The technical problem to be solved by the present application is to overcome the defects of the high shear dispersion emulsifier in the prior art, such as the processing dead zone and poor macro flow in the scene of large processing capacity, high viscosity and long and narrow container, and to provide a high shear dispersion emulsifier with macro strong flow and a reaction kettle comprising the same.

[0010] The present application solves the above technical problems by the following technical solutions:

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

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

[0013] a stator and a rotor, wherein the stator is installed above the coupling, the stator comprises a cylindrical side wall, the upper end of the cylindrical side wall is provided with a plurality of eccentric teeth arranged at intervals, the lower end of the side wall of the rotor body of the rotor is provided with a plurality of straight teeth arranged at intervals, and the straight teeth and the eccentric teeth are matched and engaged with each other;

[0014] a main transmission shaft, wherein one end of the main transmission shaft is connected with the rotating shaft of the motor, the other end of the main transmission shaft penetrates through the coupling and the stator, and the other end of the main transmission shaft is connected with the rotor, the motor drives the main transmission shaft to drive the rotor to rotate at high speed.

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

[0016] According to an embodiment of the present application, the distance n is 1 / 20 to 1 / 5 of the cross-sectional diameter of the cylindrical side wall.

[0017] According to an embodiment of the present application, the depth of the tooth gap is 1 / 4 to 1 / 6 of the working height of the stator.

[0018] According to one embodiment of the present application, the rotor further comprises a plurality of inclined claws, one end of the inclined claws is fixed on the rotor body, and the other end extends outward around the outer sidewall surface of the rotor body.

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

[0020] According to one embodiment of the present application, the included angle between the inclined surface of the inclined claw and the horizontal plane is 15° to 60°.

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

[0022] According to one embodiment of the present application, the high-shear dispersion emulsifier further comprises a mechanical seal, the mechanical seal is installed below the stator, and the main transmission shaft penetrates through the coupling and the mechanical seal.

[0023] According to one embodiment of the present application, the stator further comprises a fixed flange plate, the cylindrical sidewall is fixed on the fixed flange plate, and the fixed flange plate is connected with the upper flange surface of the coupling.

[0024] The present application also provides a reaction kettle, which is characterized in that the reaction kettle comprises the macro-effect flow high-shear dispersion emulsifier as described above.

[0025] The positive progress effect of the present application is that:

[0026] The macro-effect flow high-shear dispersion emulsifier of the present application and the reaction kettle comprising the same do not need to increase the stirrer, can simultaneously have the micro-dispersion emulsification capacity and good macro-flow characteristics, can improve the material processing efficiency, reduce the equipment investment cost, energy consumption cost, and maintenance cost, and reduce the input of manpower and material resources. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and other features, properties, and advantages of the present application will become more apparent through the following description with reference to the accompanying drawings and embodiments, in which the same reference numerals are used throughout to represent the same features, and wherein:

[0028] Figure 1 FIG. 1 is a perspective view of a macro-effect flow high-shear dispersion emulsifier according to the present application.

[0029] Figure 2 FIG. 3 is a schematic view of the structure of a stator in the macro-effect flow high-shear dispersion emulsifier according to the present application.

[0030] Figure 3The figure is a schematic view of the cross section of the cylindrical side wall of the stator of the macro high-efficiency flow high-shear dispersion emulsification machine of the present application.

[0031] Figure 4 The figure is a front view of the cylindrical side wall of the stator of the macro high-efficiency flow high-shear dispersion emulsification machine of the present application.

[0032] Figure 5 The figure is a schematic view of the structure of the rotor of the macro high-efficiency flow high-shear dispersion emulsification machine of the present application.

[0033] Figure 6 The figure is a front view of the rotor of the macro high-efficiency flow high-shear dispersion emulsification machine of the present application.

[0034] Figure 7 The figure is a schematic view of the mixing time detection of the macro high-efficiency flow high-shear dispersion emulsification machine of the present application.

[0035] REFERENCE NUMERALS

[0036] Motor 10

[0037] Coupling 20

[0038] Stator 30

[0039] Rotor 40

[0040] Main transmission shaft 50

[0041] Mechanical seal 60

[0042] Fixed flange 31

[0043] Cylindrical side wall 32

[0044] Eccentric tooth 33

[0045] Tooth slot 34 between eccentric teeth

[0046] Through hole 35

[0047] Rotor body 41

[0048] Inclined claw 42

[0049] Straight tooth 43 DETAILED DESCRIPTION

[0050] In order to make the above objectives, features and advantages of the present application more apparent, the following will describe the specific embodiments of the present application in detail in combination with the drawings.

[0051] The embodiments of the present application will now be described in detail with reference to the drawings. The embodiments of the present application will now be described in detail with reference to the preferred embodiments of the present application, examples of which are shown in the drawings. Wherever possible, the same reference numbers will be used in all the drawings to refer to the same or like parts.

[0052] Furthermore, although the terms used in the present invention are selected from publicly-known and common terms, some of the terms mentioned in the specification of the present invention can be selected by the applicant according to his or her judgment, and the detailed meanings thereof are described in the relevant parts of the description herein.

[0053] Furthermore, the present invention is required to be understood not only by the actual terms used, but also by the meanings implied by each term.

[0054] As Figures 1 to 7 shown, the present invention discloses a macroscopic high-efficiency flow high-shear dispersion emulsifier, comprising: a motor 10, a coupling 20, a stator 30, a rotor 40 and a main transmission shaft 50. Among them, the coupling 20 is installed above the motor 10. The lower part of the coupling 20 is provided with a flange surface 21, which is connected with the flange of the motor 10 through the flange surface 21. The stator 30 is installed above the coupling 20. One end of the main transmission shaft 50 is directly connected with the rotating shaft of the motor 10, and the other end penetrates through the coupling 20 and the stator 30, and is connected with the rotor 40. The motor 10 is used to drive the main transmission shaft 50 to move, so as to drive the rotor 40 to rotate at high speed.

[0055] Preferably, the high-shear dispersion emulsifier further comprises a mechanical seal 60, which is installed below the stator 30, and the main transmission shaft 50 penetrates through the coupling 20 and the mechanical seal 60. The mechanical seal 60 can preferably adopt a set-type double-end structure, which is convenient for disassembly and maintenance. The main transmission shaft 50 penetrates through the coupling 20 and the mechanical seal 60, and the upper end of the main transmission shaft 50 is pressed by a cover-type bolt with the rotor 40.

[0056] As Figure 2 shown, the stator 30 comprises a fixed flange plate 31 and a cylindrical side wall 32, the cylindrical side wall 32 is fixed on the fixed flange plate 31, and the fixed flange plate 31 is connected with the upper flange surface of the coupling 20. The upper end of the cylindrical side wall 32 is surrounded by a plurality of eccentric teeth 33 arranged at intervals. The eccentric teeth 33 can be used to control the fluid flux.

[0057] Preferably, the tooth groove 34 between the two adjacent eccentric teeth 33 is offset from the center line of the cross section of the cylindrical side wall 32 by a distance n in the plane angle direction perpendicular to the cylindrical side wall 32. The structure of the tooth groove 34 can control the finished product particle size index and part of the fluid flux in the dispersion emulsification effect by controlling the slotting structure element.

[0058] As 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 around the outer lateral surface of the rotor body 41. When the straight teeth 43 of the rotor 40 engage the eccentric teeth 33 of the stator 30, the inclined claw 42 wraps around the cylindrical lateral wall 32 of the stator 30. In this embodiment, the inclined claw 42 is designed to achieve macroscopic strong flow, and the inclined surface of the inclined claw 42 has an included angle β with the horizontal plane, which is preferably 20°. Of course, the included angle β can also be any value within the range of 15°-60°, such as 15°, 25°, 30°, 35°, 45°, or 60°. The high-shear dispersion emulsifier controls the discharge capacity of the macroscopic radial flow by adjusting the included angle β, increases the cross-sectional projection area with the increase of the included angle β, and increases the ability to push the radial flow, and in combination with the downward pressure of the inclined surface, maintains the discharge capacity of the axial flow in space.

[0065] According to the above structural description, specific examples are as follows:

[0066] The cross-sectional diameter of the stator 30 is set to 100 mm, the working height of the stator 30 is set to 60 mm, the offset n is set to 5 mm, the slot width a of the tooth slot 34 of the cylindrical lateral wall 32 is set to 10 mm, the slot depth b is set to 15 mm, and the slot number c is set to 8 mm. The rotor body 41 of the rotor 40 is a tooth structure that matches the cylindrical lateral wall 32 of the stator 30, and does not have an offset from the center line of the cross section. The included 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 with the traditional high-shear dispersion emulsifier (the offset value n of the stator slot structure is 0 mm, the slot width a of the cylindrical lateral wall slot is 5 mm, the slot depth b is 15 mm, and the slot depth c is 20 mm. The tooth structure slot depth d of the inner layer body of the rotor is 15, and the rotor does not have an inclined claw structure), the macroscopic strong flow capacity can be greatly improved, which is specifically manifested as a significant reduction in mixing time.

[0068] The detection method is to inject a tracer at the top of the container, and to set a check point at the bottom of the container. After a certain time, the composition of the tracer can be detected at the check point at the bottom of the container, and this time is the mixing time for evaluating the macroscopic strong flow capacity. As shown in Figure 7 The mixing time of the macroscopic strong flow high-shear dispersion emulsifier is reduced by about 30%-50% compared with the traditional high-shear dispersion emulsifier, which reflects the characteristic of greatly improving the macroscopic strong flow.

[0069] The application also provides a reaction kettle comprising the macroscopic high-efficiency flow high-shear dispersion emulsifier as described above. The high-shear dispersion emulsifier is installed at the bottom of the reaction kettle, and the core working parts of the stator and the rotor are immersed in the material, and the material is subjected to violent up-and-down tumbling under the action of the rotor. High-speed jets are formed under the cooperation of the rotor and the stator, and are discharged from the side wall and the lower opening of the stator, and the up-and-down tumbling material enters the cooperative working zone again. Due to the strong axial flow and radial flow generated by the rotor, the discharged material is no longer settled at the bottom, but is pushed upward, thereby forming a flow dead zone in the material area located at the side wall and above.

[0070] Meanwhile, the high-shear dispersion emulsifier realizes dispersion and emulsification with high local energy by relying on the shear capacity generated by cooperation. This structure not only accelerates the mixing effect between materials, but also microscopically completes particle depolymerization, dissolution and the like. In addition, the high-shear dispersion emulsifier benefits from the high macroscopic flow, and realizes good material uniformity and particle micro-presentation in the same mixing time without configuring a stirrer.

[0071] In summary, the macroscopic high-efficiency flow high-shear dispersion emulsifier of the application can be applied to dispersion, emulsification and mixing processes, and has many advantages as follows:

[0072] I. By the double-layer structure design of the rotor, the tooth groove structure of the rotor main body cooperates with the slotted structure of the cylindrical side wall of the stator to realize micro-dispersion and emulsification, and the inclined claw generates strong macroscopic flow, effectively improving the macroscopic flow circulation amount and greatly reducing the mixing time. Compared with the prior art, the mixing time can be shortened by 30%-50% under the same processing conditions.

[0073] II. 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 elongated containers and viscous material systems.

[0074] III. The high-shear dispersion emulsifier can realize macroscopic flow and micro-dispersion and emulsification at the same time without increasing the stirrer, thereby reducing the equipment investment cost, energy consumption cost and maintenance cost, and reducing the labor and material input.

[0075] IV. By adjusting the β angle of the inclined claw, the driving capacity of the macroscopic radial flow can be flexibly controlled according to the requirements of different processes, so as to meet the requirements of different application scenarios.

[0076] For those skilled in the art, the above disclosure 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 invention, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of a single embodiment 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 terms "approximately," "about," or "generally."

[0079] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention 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 the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A high shear dispersion emulsifier for macroscopic potent flow, characterized in that, The high shear dispersion emulsification machine comprises: a motor and a coupling, the coupling being installed above the motor; a stator and a rotor, the stator being installed above the coupling, the stator comprising a cylindrical side wall, an upper end of the cylindrical side wall being provided with a plurality of eccentric teeth arranged at intervals; a lower end of a rotor body of the rotor being provided with a plurality of straight teeth arranged at intervals; the straight teeth and the eccentric teeth being matched and engaged with each other; a main transmission shaft, one end of the main transmission shaft being connected with a rotating shaft of the motor, the other end of the main transmission shaft penetrating the coupling and the stator and being connected with the rotor, the motor driving the main transmission shaft to drive the rotor to rotate at high speed.

2. The high shear dispersion emulsification machine of macro- powerful flow according to claim 1, characterized in that, A tooth gap between two adjacent eccentric teeth is offset from a center line of a cross section of the cylindrical side wall by a distance n in a direction of an angle perpendicular to the cylindrical side wall, the offset direction being opposite to a rotation direction of the stator.

3. The high shear dispersion emulsification machine of macro- powerful flow according to claim 2, characterized in that, The distance n is 1 / 20 to 1 / 5 of a cross section diameter of the cylindrical side wall.

4. The high shear macro-empirical flow dispersing emulsifying machine according to claim 2, characterized in that, A depth of the tooth gap is 1 / 4 to 1 / 6 of a working height of the stator.

5. The high shear macro-empirical flow dispersing emulsifying machine according to claim 1, characterized in that, The rotor further comprises a plurality of inclined claws, one end of the inclined claw being fixed on the rotor body and the other end of the inclined claw extending outward to surround an outer side wall surface of the rotor body; When the straight teeth of the rotor are engaged with the eccentric teeth of the stator, the inclined claws wrap the cylindrical side wall of the stator.

6. The high shear dispersion emulsification machine of macro- powerful flow according to claim 5, characterized in that, An included angle between an inclined surface of the inclined claw and a horizontal plane is 15° to 60°.

7. The high shear dispersion emulsification machine of macro- powerful flow according to claim 6, characterized in that, The included angle is 15°, 20°, 25°, 30°, 35°, 45° or 60°.

8. The high shear macro-empirical flow dispersing emulsifying machine according to claim 1, characterized in that, The high shear dispersion emulsification machine further comprises a mechanical seal, the mechanical seal being installed below the stator, the main transmission shaft penetrating the coupling and the mechanical seal.

9. The high shear dispersion emulsification machine of macro- powerful flow according to claim 5, characterized in that, The stator further comprises a fixed flange, the cylindrical side wall being fixed on the fixed flange, the fixed flange being connected with an upper flange surface of the coupling.

10. A reaction vessel, characterized by, The reaction kettle comprises the macro-effect flow high shear dispersion emulsification machine according to any one of claims 1 to 9.

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