A vertical mixing reactor
By combining the inner and outer blades in the vertical mixing reactor, the problem of uneven mixing of high-viscosity materials is solved, resulting in a more efficient polymerization reaction, increased reaction surface area, and promoted thorough mixing and shearing of the materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU GREATCHINA SINO TECH BIOMEDICAL MATERIALS CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional stirring methods cannot effectively handle high-viscosity materials, resulting in low polymer molecular weight, wide molecular weight distribution, and a large amount of unreacted monomer raw materials remaining. Furthermore, existing reactors exhibit rod climbing and wall sticking phenomena when mixing high-viscosity materials, leading to uneven mixing.
The vertical mixing reaction device uses inner and outer blades to provide various mixing flow patterns, velocities, and shearing effects, increasing the surface area for material mixing and reaction. Through the spiral structure design of the inner and outer blades and the drive mechanism, it achieves thorough mixing and shearing.
It improves the mixing effect of high-viscosity materials, increases the reaction surface area, promotes the polymerization reaction, solves the problems of uneven mixing and sticking to the wall, and improves the efficiency of the polymerization reaction.
Smart Images
Figure CN224405143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stirring and mixing technology, and in particular to a vertical mixing reaction device. Background Technology
[0002] During the polymerization process, the product viscosity gradually increases, the system releases heat, and volatile byproducts are generated. Traditional stirring methods cannot achieve sufficient mixing, resulting in low polymer molecular weight, wide molecular weight distribution, and a large amount of unreacted monomer residue.
[0003] Polycondensation is a reaction that generates byproducts, and rapidly removing these byproducts from the stirred tank system is crucial for increasing the reaction rate. The byproducts are expelled from the gas-liquid interface of the stirred tank under heating and vacuum. Therefore, to accelerate the polymerization reaction, a large gas-liquid interface area and rapid polymer surface renewal are essential. In polycondensation, to ensure the rapid evaporation of byproducts from the polymer surface, the reaction must be accelerated to remove the byproducts from the polymer. Therefore, increasing the polymer surface area is a key focus.
[0004] In reactors with shaft-connected impellers, high-viscosity materials exhibit phenomena such as climbing the impeller, sticking to the walls, and binding the impeller during stirring, leading to uneven mixing. When helical ribbon blades are directly fixed to the frame unit, within the frame unit, the helical ribbon blades inhibit the increase of polymer flow and also disrupt the continuity of the polymer liquid film, resulting in a reduced polymer surface area.
[0005] Therefore, there is a need for a mixing reaction device that can be used to mix high-viscosity materials, increase the surface area of the material mixing reaction, and ultimately improve the polymerization reaction effect. Utility Model Content
[0006] This application addresses the shortcomings of existing production technologies by providing a vertical mixing reaction device. Through the cooperation of inner and outer blades within the reaction vessel, it can provide various mixing flow patterns, velocities, and shearing effects, resulting in a large material mixing and reaction surface area. This ensures thorough mixing of materials, promotes maximum stirring and shearing effects, and improves the polymerization reaction effect.
[0007] The technical solution adopted in this utility model is as follows:
[0008] A vertical mixing reaction device includes a vertically arranged reaction vessel. An inner impeller is disposed at the center of the reaction vessel, and an outer impeller is disposed around the outer ring of the inner impeller. The helical envelope surface of the outer impeller is close to the inner wall of the reaction vessel and maintains a certain gap. The helical envelope surface of the inner impeller is completely within the helical envelope surface of the outer impeller, and a certain gap is maintained between the helical envelope surfaces of the inner and outer impellers. An inner impeller drive mechanism is connected to the center of the upper end of the inner impeller, which can drive the inner impeller to rotate. An outer impeller drive mechanism is connected to the center of the upper end of the outer impeller, which can drive the outer impeller to rotate.
[0009] Furthermore, the reaction vessel has an inverted cone structure.
[0010] Furthermore, both the inner and outer blades have a helical ribbon structure.
[0011] Furthermore, the pitch of the outer blade is greater than that of the inner blade.
[0012] Furthermore, the inner blade drive mechanism includes an inner shaft drive motor, the drive end of which is connected to the input end of a first helical gear reducer, the output end of which is connected to the upper end of an inner stirring shaft, and the lower end of the inner stirring shaft extends into the reaction vessel and is connected to the upper end of the inner blade.
[0013] Furthermore, the outer blade drive mechanism includes an outer shaft drive motor, the drive end of which is connected to the input end of a second helical gear reducer, the output end of which is connected to the upper end of an outer stirring shaft, and the lower end of the outer stirring shaft extends into the reaction vessel and is connected to the upper end of the outer blade.
[0014] Furthermore, the outer blade is a hollow shaft, and an inner blade that can rotate freely is installed inside the outer blade.
[0015] Furthermore, the first helical gear reducer is fixed on the second helical gear reducer, the second helical gear reducer is fixed on the bracket, and the bracket is fixed on the top of the reaction vessel.
[0016] Furthermore, a feed inlet is provided at the top of the reaction vessel, and a discharge outlet is provided at the bottom of the reaction vessel, with a discharge valve installed at the discharge outlet.
[0017] Furthermore, a jacket layer is provided on the inner surface of the reaction vessel, and a hot and cold medium channel is provided inside the jacket layer. A hot and cold medium inlet and a hot and cold medium outlet are respectively provided on the upper and lower parts of the side of the reaction vessel, and the hot and cold medium inlet and the hot and cold medium outlet are respectively connected to the hot and cold medium channel.
[0018] The beneficial effects of this utility model are as follows:
[0019] This invention, through the cooperation of inner and outer blades within the reaction vessel, can provide various mixing flow patterns, velocities, and shearing effects, providing a large material mixing and reaction surface area, ensuring thorough mixing, promoting maximum stirring and shearing effects on the materials, and improving the polymerization reaction effect; the pitch of the outer blade is greater than that of the inner blade, meaning that the mixture is pushed downwards more than it is lifted upwards, thus facilitating unloading. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] The components are: 1. Reaction vessel; 2. Inner impeller; 3. Outer impeller; 4. Jacket layer; 5. Inner stirring shaft; 6. Outer stirring shaft; 7. Inner shaft drive motor; 8. First helical gear reducer; 9. Outer shaft drive motor; 10. Second helical gear reducer; 11. Support frame; 12. Discharge valve. Detailed Implementation
[0022] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0023] like Figure 1 As shown, a vertical mixing reaction device includes a reaction vessel 1 with a vertically arranged inverted cone structure. An inner blade 2 is positioned at the center of the reaction vessel 1, and an outer blade 3 is positioned around the outer ring of the inner blade 2. The helical envelope surface of the outer blade 3 is close to the inner wall of the reaction vessel 1, maintaining a certain gap, so that the outer blade 3 will not collide with the inner wall of the reaction vessel 1 when rotating. The helical envelope surface of the inner blade 2 is completely within the helical envelope surface of the outer blade 3, and a certain gap is maintained between the helical envelope surfaces of the inner blade 2 and the outer blade 3, so that the inner blade 2 and the outer blade 3 will not collide when rotating together.
[0024] like Figure 1 As shown, both the inner blade 2 and the outer blade 3 are spiral ribbon structures. The spiral winding directions of the inner blade 2 and the outer blade 3 can be the same or different. The cooperation between the inner blade 2 and the outer blade 3 can provide a variety of mixing flow patterns, velocities and shearing effects, providing a large material mixing reaction surface area, which enables the material to be fully mixed and promotes the maximum stirring and shearing effect on the material, making the polymerization reaction very efficient.
[0025] When the inner blade 2 and the outer blade 3 are spirally wound in the same direction, the mixture is pushed downward by the inner blade 2 and the outer blade 3 together, forcing the material flow to be squeezed and churned upward along the inner wall of the reaction vessel 1, effectively increasing the shear surface area, increasing the reaction surface area, and making the mixing and chemical reaction more efficient.
[0026] When the inner blade 2 and the outer blade 3 spiral in opposite directions, the material to be mixed is driven downward by the outer blade 3, while the mixture is moved in the opposite direction (i.e., upward) by the inner blade 2. The mixture is thoroughly mixed during this downward and upward agitation.
[0027] The pitch of the outer blade 3 is greater than that of the inner blade 2, which means that the mixture is pushed downwards more than it is lifted upwards, thus facilitating unloading.
[0028] like Figure 1 As shown, the inner blade 2 is connected to the inner blade drive mechanism at its upper center, which drives the inner blade 2 to rotate. The outer blade 3 is connected to the outer blade drive mechanism at its upper center, which drives the outer blade 3 to rotate.
[0029] like Figure 1 As shown, the inner blade drive mechanism includes an inner shaft drive motor 7. The drive end of the inner shaft drive motor 7 is connected to the input end of the first helical gear reducer 8. The output end of the first helical gear reducer 8 is connected to the upper end of the inner stirring shaft 5. The lower end of the inner stirring shaft 5 extends into the reaction vessel 1 and is connected to the upper end of the inner blade 2.
[0030] like Figure 1 As shown, the outer blade drive mechanism includes an outer shaft drive motor 9. The drive end of the outer shaft drive motor 9 is connected to the input end of the second helical gear reducer 10. The output end of the second helical gear reducer 10 is connected to the upper end of the outer stirring shaft 6. The lower end of the outer stirring shaft 6 extends into the reaction vessel 1 and is connected to the upper end of the outer blade 3.
[0031] like Figure 1 As shown, the outer blade 3 is a hollow shaft, and the inner blade 2, which can rotate freely, is installed inside the outer blade 3.
[0032] like Figure 1 As shown, the first helical gear reducer 8 is fixed on the second helical gear reducer 10, the second helical gear reducer 10 is fixed on the bracket 11, and the bracket 11 is fixed on the top of the reaction vessel 1.
[0033] like Figure 1 As shown, a feed inlet is provided at the top of the reaction vessel 1, and a discharge outlet is provided at the bottom of the reaction vessel 1. A discharge valve 12 is provided at the discharge outlet, which controls the opening and closing of the discharge outlet. The mixture is fed into the reaction vessel 1 through the feed inlet and flows out through the discharge outlet.
[0034] like Figure 1As shown, a jacket layer 4 is provided on the inner surface of the reaction vessel 1, and a hot and cold medium channel is provided in the jacket layer 4. A hot and cold medium inlet and a hot and cold medium outlet are respectively provided on the upper and lower parts of the side of the reaction vessel 1. The hot and cold medium inlet and the hot and cold medium outlet are respectively connected to the hot and cold medium channel. The hot and cold medium can circulate in the jacket layer 4, which can cool or heat the mixture.
[0035] The reaction vessel 1 is equipped with a vacuum port, which can be connected to an external vacuum pump for evacuation. This invention can operate under normal pressure or negative pressure. If the reaction is carried out under negative pressure, a vacuum pump is connected for evacuation.
[0036] This invention can be used for mixing high-viscosity materials. The cooperation between the inner blade 2 and the outer blade 3 can provide a variety of mixing flow patterns, speeds and shearing effects, providing a large material mixing reaction surface area, which allows the materials to be fully mixed, promotes the maximum stirring and shearing effect on the materials, and improves the polymerization reaction effect.
[0037] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A vertical mixing reactor apparatus comprising a reaction vessel (1) arranged vertically, characterized in that: An inner blade (2) is provided at the center of the reaction vessel (1), and an outer blade (3) is provided around the outer ring of the inner blade (2). The spiral envelope surface of the outer blade (3) is close to the inner wall of the reaction vessel (1) and maintains a certain gap. The spiral envelope surface of the inner blade (2) is completely within the spiral envelope surface of the outer blade (3). A certain gap is maintained between the spiral envelope surface of the inner blade (2) and the spiral envelope surface of the outer blade (3). The inner blade driving mechanism is connected to the center of the upper end of the inner blade (2). The inner blade driving mechanism can drive the inner blade (2) to rotate. The outer blade driving mechanism is connected to the center of the upper end of the outer blade (3). The outer blade driving mechanism can drive the outer blade (3) to rotate.
2. A vertical mixing reaction apparatus as claimed in claim 1, characterized in that: The reaction vessel (1) has an inverted cone structure.
3. A vertical mixing reaction apparatus as claimed in claim 2, characterized in that: Both the inner blade (2) and the outer blade (3) are spiral ribbon structures.
4. A vertical mixing reaction apparatus as claimed in claim 3, characterized in that: The pitch of the outer blade (3) is greater than the pitch of the inner blade (2).
5. A vertical mixing reaction apparatus as described in claim 4, characterized in that: The inner blade drive mechanism includes an inner shaft drive motor (7), the drive end of the inner shaft drive motor (7) is connected to the input end of the first helical gear reducer (8), the output end of the first helical gear reducer (8) is connected to the upper end of the inner stirring shaft (5), and the lower end of the inner stirring shaft (5) extends into the reaction vessel (1) and is connected to the upper end of the inner blade (2).
6. A vertical mixing reaction apparatus as described in claim 5, characterized in that: The external blade drive mechanism includes an external shaft drive motor (9), the drive end of the external shaft drive motor (9) is connected to the input end of the second helical gear reducer (10), the output end of the second helical gear reducer (10) is connected to the upper end of the external stirring shaft (6), and the lower end of the external stirring shaft (6) extends into the reaction vessel (1) and is connected to the upper end of the external blade (3).
7. A vertical mixing reaction apparatus as described in claim 6, characterized in that: The outer blade (3) is a hollow shaft, and an inner blade (2) that can rotate freely is provided inside the outer blade (3).
8. A vertical mixing reaction apparatus as described in claim 7, characterized in that: The first helical gear reducer (8) is fixed on the second helical gear reducer (10), the second helical gear reducer (10) is fixed on the bracket (11), and the bracket (11) is fixed on the top of the reaction vessel (1).
9. A vertical mixing reaction apparatus as described in claim 8, characterized in that: The reaction vessel (1) is provided with a feed inlet at the top and a discharge outlet at the bottom, and a discharge valve (12) is provided at the discharge outlet.
10. A vertical mixing reaction apparatus as described in claim 9, characterized in that: The inner surface of the reaction vessel (1) is provided with a jacket layer (4), and a hot and cold medium channel is provided inside the jacket layer (4). The upper and lower sides of the reaction vessel (1) are respectively provided with a hot and cold medium inlet and a hot and cold medium outlet, and the hot and cold medium inlet and the hot and cold medium outlet are respectively connected to the hot and cold medium channel.