A stirring device for a reaction vessel
By setting No. 1 and No. 2 stirring blades in the reactor to generate relative axial flow, and combining them with through holes to achieve radial and axial flow of the slurry, the problem of insufficient mixing efficiency and uniformity in the prior art is solved, achieving a highly efficient and uniform mixing effect and preventing sedimentation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGXIANG SHULE RUBBER & PLASTIC CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-04
AI Technical Summary
The existing stirring structure of the reactor has shortcomings in terms of mixing efficiency, dispersion degree and reaction uniformity, making it difficult to achieve the desired effect.
The system uses No. 1 and No. 2 stirring blades to generate relative axial flow, and forms a local high-pressure zone through their convergence. Combined with the through holes on the pipe body, it realizes the radial and axial flow of the slurry. It is equipped with a bottom stirring rod to prevent sedimentation.
It significantly improves mixing efficiency and uniformity, enhances fluid shearing, convection and diffusion, and prevents bottom sedimentation.
Smart Images
Figure CN224585925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reactor stirring technology, and specifically to a reactor stirring device. Background Technology
[0002] In the esterification reaction of plasticizers, a reaction vessel is typically used as the main equipment. During operation, slurry raw materials are added to the reaction vessel, and then the stirring device is started to mix the slurry. However, in the existing technology, the stirring structure mostly adopts a single stirring blade form. This simple stirring method has obvious shortcomings, and it is difficult to achieve ideal results in terms of mixing efficiency, dispersion degree, and reaction uniformity. Utility Model Content
[0003] To address the aforementioned technical deficiencies, this invention provides a reactor stirring device that enables the slurry to generate radial flow and axial flow in different directions, resulting in higher mixing efficiency and more uniform mixing.
[0004] This utility model discloses a reaction vessel stirring device, including a tank body. A discharge pipe is provided on the lower side of the tank body, and a feeding pipe is provided on the upper side of the tank body. Valves are provided on the feeding pipe and the discharge pipe. An installation port is provided in the middle of the upper end of the tank body. A drive motor is installed in the installation port. The shaft of the drive motor passes vertically downward through the installation port. A pipe body is coaxially installed at the lower end of the shaft. Both ends of the pipe body are sealed. A first stirring blade is evenly arranged on the outer surface of the upper part of the pipe body, and a second stirring blade is evenly arranged on the outer surface of the lower part of the pipe body. Both the first and second stirring blades are axial flow blades, and when the pipe body rotates, the first and second stirring blades generate relative axial flow. A first through hole is evenly arranged on the upper side of the pipe body of the first stirring blade, a second through hole is evenly arranged on the pipe body between the first and second stirring blades, and a third through hole is evenly arranged on the lower side of the pipe body of the second stirring blade.
[0005] During operation, the drive motor rotates the pipe body, causing the No. 1 and No. 2 stirring blades to generate opposing axial flows. Specifically, the axial flow generated by the No. 1 stirring blade is downward, while the axial flow generated by the No. 2 stirring blade is upward. These axial flows converge and mix between the No. 1 and No. 2 stirring blades. At this point, the slurry pressure at the convergence point increases sharply, causing the mixed slurry to flow radially towards the No. 2 through-hole and enter the pipe body. Part of the mixed slurry entering the pipe body flows upward, and part flows downward. The upward-flowing slurry flows radially out of the No. 1 through-hole on the pipe body and continues to flow downward under the action of the No. 1 stirring blade, while the downward-flowing slurry flows radially out of the No. 3 through-hole on the pipe body and continues to flow upward under the action of the No. 2 stirring blade. This combination of radial and axial flow results in high mixing efficiency and uniform mixing.
[0006] To prevent sedimentation at the bottom, the lower end of the tube is close to the bottom of the tank, and stirring rods are evenly arranged around the lower end of the tube. When the tube rotates, the stirring rods stir the bottom of the tank to prevent sedimentation.
[0007] The reaction vessel stirring device obtained by this utility model has the following advantages: by setting a first stirring blade and a second stirring blade, relative axial flow is generated during stirring and forced to converge, forming a local high-pressure zone, which forces the slurry to form a strong internal circulation in the axial and radial directions through multiple sets of through holes on the pipe body; at the same time, the bottom stirring bar effectively prevents sedimentation, and the overall structure significantly enhances the shearing, convection and diffusion of the fluid, thereby greatly improving the mixing efficiency and uniformity. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0009] Figure 2 This is a front view and cross-sectional view of Embodiment 1 of this utility model. Detailed Implementation
[0010] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0011] Example 1:
[0012] like Figure 1 , 2 As shown, this utility model discloses a reaction vessel stirring device, including a tank body 1. A discharge pipe 11 is provided on the lower side of the tank body 1, and a feeding pipe 2 is provided on the upper side of the tank body 1. Valves are provided on the feeding pipe 2 and the discharge pipe 11. An installation port is provided in the middle of the upper end of the tank body 1. A drive motor 3 is installed in the installation port. The rotating shaft of the drive motor 3 passes vertically downward through the installation port. A pipe body 4 is coaxially installed at the lower end of the rotating shaft. Both ends of the pipe body 4 are sealed. The lower end of the pipe body 4 is close to the bottom of the tank body 1. Stirring rods 9 are evenly arranged around the lower end of the pipe body 4. The upper part of the pipe body 4... A first stirring blade 6 is evenly arranged on the outer surface of the tube body 4, and a second stirring blade 8 is evenly arranged on the outer surface of the lower part of the tube body 4. Both the first stirring blade 6 and the second stirring blade 8 are axial flow blades, and when the tube body 4 rotates, the first stirring blade 6 and the second stirring blade 8 generate relative axial flow. A first through hole 5 is evenly arranged on the upper side of the tube body 4 of the first stirring blade 6, a second through hole 7 is evenly arranged on the tube body 4 between the first stirring blade 6 and the second stirring blade 8, and a third through hole 10 is evenly arranged on the lower side of the tube body 4 of the second stirring blade 8.
[0013] In use, the drive motor 3 causes the tube body 4 to rotate. The rotation of the tube body 4 causes the first stirring blade 6 and the second stirring blade 8 to generate relative axial flows. That is, the axial flow generated by the first stirring blade 6 is downward and the axial flow generated by the second stirring blade is upward. The axial flows generated by the two will converge and mix between the first stirring blade 6 and the second stirring blade 8. At this time, the slurry pressure at the convergence point increases sharply, so the mixed slurry will flow radially to the second through hole 7 and enter the tube body 4. Part of the mixed slurry entering the tube body 4 flows upward and part flows downward. The upward flowing slurry flows out radially from the first through hole 5 on the tube body 4 and continues to flow downward under the action of the first stirring blade 6. The downward flowing slurry flows out radially from the third through hole 10 on the tube body 4 and continues to flow upward under the action of the second stirring blade 8. This makes the slurry have both radial and axial flows, resulting in high mixing efficiency and uniform mixing.
Claims
1. A reaction kettle stirring device, comprising a tank body, a discharge pipe is arranged on the lower side of the tank body, a feeding pipe is arranged on the upper side of the tank body, and valves are arranged on the feeding pipe and the discharge pipe, characterized in that: An installation port is provided at the middle of the upper end of the tank, and a drive motor is installed on the installation port. The shaft of the drive motor passes vertically downward through the installation port, and a pipe is coaxially installed at the lower end of the shaft. Both ends of the pipe are sealed. A first stirring blade is evenly arranged on the outer surface of the upper part of the pipe, and a second stirring blade is evenly arranged on the outer surface of the lower part of the pipe. Both the first and second stirring blades are axial flow blades, and when the pipe rotates, the first and second stirring blades generate relative axial flow. A first through hole is evenly arranged on the upper side of the pipe of the first stirring blade, a second through hole is evenly arranged on the pipe between the first and second stirring blades, and a third through hole is evenly arranged on the lower side of the pipe of the second stirring blade.
2. The stirring device for a reaction vessel according to claim 1, wherein: The lower end of the tube is close to the bottom of the tank, and stirring rods are evenly arranged around the lower end of the tube.