Vertical dynamic mixer

Abstract

The utility model relates to the technical field of stirring, in particular to a vertical dynamic mixer which comprises a kettle body and a stirrer, N layers of static blades are arranged on the inner wall of the kettle body, the stirrer is driven by a driving mechanism to rotate in the kettle body, the stirrer comprises a stirring shaft and N layers of dynamic blades arranged on the stirring shaft, and the N layers of static blades are arranged on the stirring shaft. The dynamic blades and the static blades are arranged in a staggered mode in the axial direction, the dynamic blades and the static blades are each of a trapezoidal structure, and N is a positive integer larger than or equal to 2. According to the utility model, the trapezoidal dynamic blades are matched with the static blades, so that fluid is subjected to multiple times of shearing, shunting and merging, and the stirrer has excellent shearing performance, mixing performance and self-cleaning performance, and is suitable for stirring and mixing processes of high-viscosity fluid.

Description

Technical Field

[0001] This utility model relates to the field of mixing technology, and in particular to a vertical dynamic mixer. Background Technology

[0002] Polymer blending technology, characterized by its rapid effectiveness and high efficiency, has become an important method for preparing new materials. Polymer blending typically refers to the process of mixing two or more polymers to obtain polymer composite materials with excellent overall properties. Small amounts of solid or liquid additives are usually added during polymer processing. The significant differences in viscosity and phase state between polymers and additives make it difficult to achieve uniform mixing in a short time.

[0003] Polyethylene terephthalate (PET) is currently the world's most produced and widely used synthetic fiber material. With rising living standards, the demand for functional polyester fiber products with properties such as UV resistance, antistatic properties, antibacterial properties, and flame retardancy is increasing daily. The inorganic nanoparticles in the added functional masterbatches have characteristics such as small particle size, large specific surface area, and high specific surface energy, making them prone to agglomeration in the polymer melt. Therefore, a key issue in melt blending is the uniform dispersion of the added components in the polymer melt. Static mixers, with their special structural design, can mix fluids over a wide Reynolds number range. However, static mixers have relatively weak shear capacity, making it difficult to meet the production needs of high-performance functional fibers. Utility Model Content

[0004] This invention solves the problems in related technologies and proposes a vertical dynamic mixer that uses trapezoidal dynamic blades in combination with static blades to achieve mixing. It has excellent shearing performance, mixing performance and self-cleaning performance, and is suitable for stirring and mixing processes of high viscosity fluids.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a vertical dynamic mixer, including a vessel body and a stirrer, wherein N layers of static blades are installed on the inner wall of the vessel body, and the stirrer is driven to rotate within the vessel body by a drive mechanism. The stirrer includes a stirring shaft and N layers of dynamic blades installed on the stirring shaft. The dynamic blades and the static blades are arranged alternately along the axial direction, and both the dynamic blades and the static blades are trapezoidal structures, wherein N is a positive integer greater than or equal to 2.

[0006] As a preferred embodiment, the length-to-diameter ratio of the vessel body is 2 to 5.

[0007] As a preferred embodiment, the diameter of the stirrer is 0.85 to 0.95 times the diameter of the vessel body.

[0008] As a preferred option, the number of static blades in each layer is 2 to 8.

[0009] As a preferred option, the number of dynamic blades in each layer is 2 to 8.

[0010] As a preferred embodiment, the vessel body is provided with a feed inlet and a discharge outlet.

[0011] Compared with the prior art, the beneficial effects of this utility model are: there is a large velocity gradient between the dynamic blades and the static blades of this utility model, which can enhance the shearing performance and mixing performance. The dynamic blades and the static blades are arranged alternately along the axial direction, and the fluid undergoes multiple shearing, splitting and merging. Therefore, the device has excellent shearing performance, mixing performance and self-cleaning performance, and is suitable for stirring and mixing processes of high viscosity fluids. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the stirrer of this utility model (2 dynamic blades);

[0014] Figure 3 This is a schematic diagram of the structure of the stirrer of this utility model (4 dynamic blades).

[0015] In the picture:

[0016] 1. Kettle body, 2. Static blades, 3. Agitator, 31. Agitator shaft, 32. Dynamic blades, 4. Drive mechanism, 5. Feed inlet, 6. Discharge outlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0023] like Figures 1 to 3 As shown, a vertical dynamic mixer includes a vessel body 1 and a stirrer 3. N layers of static blades 2 are installed on the inner wall of the vessel body 1. The stirrer 3 is driven to rotate inside the vessel body 1 by a drive mechanism 4 (such as a motor reducer). The stirrer 3 includes a stirring shaft 31 and N layers of dynamic blades 32 installed on the stirring shaft 31. The dynamic blades 32 and the static blades 2 are arranged alternately along the axial direction. Both the dynamic blades 32 and the static blades 2 are trapezoidal structures. Compared with traditional rectangular blades, the trapezoidal dynamic blades 32 and static blades 2 have a larger contact area, stronger shearing performance, and enhance the mixing process. Here, N is a positive integer greater than or equal to 2.

[0024] In one embodiment, the number of static blades 2 in each layer is 2 to 8. In this embodiment, the number of static blades 2 in each layer is 3.

[0025] In one embodiment, the number of dynamic blades 32 per layer is 2 to 8. In this embodiment, for example... Figure 2 As shown, each layer of dynamic blades has 2 blades (32), as follows: Figure 3 As shown, the number of dynamic blades 32 in each layer can also be 4.

[0026] In one embodiment, the length-to-diameter ratio of the vessel body 1 is 3, the diameter of the agitator 3 is 0.95 times the diameter of the vessel body 1, and the vessel body 1 is provided with a feed inlet 5 for feeding and a discharge outlet 6 for discharging.

[0027] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A vertical dynamic mixer characterized by: The reactor comprises a kettle body (1) and a stirrer (3), N layers of static blades (2) are installed on the inner wall of the kettle body (1), the stirrer (3) is driven to rotate in the kettle body (1) by a driving mechanism (4), the stirrer (3) comprises a stirring shaft (31) and N layers of dynamic blades (32) installed on the stirring shaft (31), the dynamic blades (32) and the static blades (2) are staggered along the axial direction, and the dynamic blades (32) and the static blades (2) are all trapezoidal structures, wherein N is a positive integer greater than or equal to 2.

2. The vertical dynamic mixer of claim 1, wherein: The length-diameter ratio of the kettle body (1) is 2-5.

3. The vertical dynamic mixer of claim 1, wherein: The diameter of the stirrer (3) is 0.85-0.95 times the diameter of the kettle body (1).

4. The vertical dynamic mixer of claim 1, wherein: The number of static blades (2) in each layer is 2-8.

5. The vertical dynamic mixer of claim 1, wherein: The number of dynamic blades (32) in each layer is 2-8.

6. The vertical dynamic mixer of claim 1, wherein: The kettle body (1) is respectively provided with a feeding port (5) and a discharging port (6).

Images