CN218422738U - Horizontal single-shaft stirring equipment - Google Patents
Horizontal single-shaft stirring equipment Download PDFInfo
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- CN218422738U CN218422738U CN202220019987.1U CN202220019987U CN218422738U CN 218422738 U CN218422738 U CN 218422738U CN 202220019987 U CN202220019987 U CN 202220019987U CN 218422738 U CN218422738 U CN 218422738U
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Abstract
The utility model discloses a horizontal unipolar agitated vessel. Including arranging a (mixing) shaft and a plurality of stirring rake in the stirred tank in, stirring rake fixed connection is in the (mixing) shaft, its characterized in that: the stirring shaft is divided into three areas along the axial direction of the stirring shaft, wherein the three areas are a first area, a second area and a third area respectively, and the flowing direction of the fluid is the first area, the second area and the third area sequentially; the stirring paddles in the first area are window discs, the stirring paddles in the second area and the stirring paddles in the third area are both composed of one window disc and a plurality of n-shaped kneading elements, and the inner wall surface of the stirring tank in which the third area is located is fixedly provided with n-shaped static kneading elements in the axial direction and the circumferential direction. The utility model discloses an agitated vessel possesses more excellent film forming property and surface renewal performance, is applicable to the final polycondensation process of polyester.
Description
Technical Field
The utility model relates to an agitated vessel especially relates to a horizontal unipolar agitated vessel for polyester final polycondensation.
Background
In the polycondensation reaction system of polyester, polyamide, etc., small molecule volatile monomers are evaporated from prepolymers with lower molecular weight, thereby promoting the equilibrium of the polycondensation reaction system to move towards the positive direction, and the prepolymers with low molecular weight are further polymerized to form polymers with high molecular weight and high performance. The production processes of these products can be generally divided into pre-polycondensation and final polycondensation, wherein the viscosity of the pre-polycondensation system is low, the small molecule volatile monomer is easy to remove from the polymerization system, while the viscosity of the final polycondensation system is very high, the difficulty and time for removing the small molecule volatile monomer from the polymerization system are obviously increased, and the viscosity of the system is also increased along with the progress of the polymerization process, so that the final polycondensation reactor has higher technical difficulty.
Horizontal rotating disc reactor and cage reactor wide application are in polyester's final polycondensation reactor, wherein horizontal rotating disc reactor can divide into horizontal unipolar disc reactor and horizontal biax disc reactor, only there is a (mixing) shaft in the horizontal unipolar disc reactor, there are two (mixing) shafts in the horizontal unipolar disc reactor, cage reactor has net cage formula stirring unit, the polymer fuse-element forms the liquid film that flows on rotatory disc and net cage unit under the combined action such as gravity of self, viscous force, surface tension, the liquid film takes place deformation in the motion process, mix in the fluid in liquid film and the cauldron and the surface renewal simultaneously, but along with the going on of polycondensation, the viscosity of polymer fuse-element further increases, the film forming ability and the surface renewal performance of these equipment receive very big restriction, be difficult to prepare materials such as higher performance polyester.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that exists among the background art, the utility model aims to provide a horizontal unipolar agitated vessel that has excellent film forming properties and surface renewal performance, can be used to polyester final polycondensation.
In order to achieve the above object, the utility model provides a technical scheme that its technical problem adopted is:
the utility model comprises a stirring shaft and a plurality of stirring paddles, wherein the stirring paddles are fixedly connected with the stirring shaft, are sequentially divided into three areas along the axial direction of the stirring shaft, and are sequentially divided into a first area, a second area and a third area according to the flowing direction of fluid; the stirring paddles in the first area are window discs, the stirring paddles in the second area and the stirring paddles in the third area are both composed of one window disc and a plurality of n-shaped kneading elements, and the inner wall surface of the stirring tank in which the third area is positioned is fixedly provided with n-shaped static kneading elements in the axial direction and the circumferential direction.
In the stirring paddles in the second area and the third area, the periphery of the windowing disc is fixedly connected with a plurality of n-shaped kneading elements at intervals along the circumferential direction, the top end of each n-shaped kneading element is radially arranged along the windowing disc and is fixedly connected to the outer edge of the windowing disc, and the surface of each n-shaped kneading element is arranged along the surface vertical to the surface of the windowing disc.
A plurality of static kneading elements are circumferentially arranged on the inner wall surface of the stirring groove between two adjacent stirring paddles in the third region, the static kneading elements are circumferentially and uniformly distributed along the same circumference at intervals, and the static kneading elements are radially positioned between the kneading elements of the stirring paddles and the stirring shaft.
The center of the windowing disc is provided with a through hole through which the stirring shaft coaxially penetrates, and the surface of the windowing disc around the through hole is provided with a plurality of through grooves at intervals along the circumference to serve as windows.
The shapes and sizes of the windows in the windowing discs of the stirring paddles in the first area, the second area and the third area are different.
The window shape is quadrilateral, circular, elliptical and fan-shaped, preferably fan-shaped.
The number of windows in a single windowed disc is in the range of 2 to 8, preferably 3 to 6.
The number of windows in the windowed discs of the paddles in the three zones may be the same or different.
The areas of the windows in the windowing discs of the stirring paddles in the first region, the second region and the third region are gradually reduced and gradually close to the stirring shaft.
At least one stirring blade is arranged in the first area, the second area and the third area.
The distance between two adjacent stirring paddles in the first area is smaller than the distance between two adjacent stirring paddles in the second area and the third area.
The distance between two adjacent stirring paddles in the second area is the same as or different from the distance between two adjacent stirring paddles in the third area.
The kneading elements of the second-region stirring paddle and the kneading elements of the third-region stirring paddle of the stirring device are in a shape of Chinese character 'shan', and the number of the kneading elements in a single stirring paddle is 2-10, preferably 3-8.
The kneading elements of the second zone paddles and the chevron kneading elements of the third zone paddles may be the same or different in size. The number of kneading elements of the second-zone paddle and the number of chevron-shaped kneading elements of the third-zone paddle may be the same or different.
The number of the static kneading elements in the circumferential direction of the wall surface of the stirring tank of the third zone is 2 to 10, preferably 2 to 8.
The number of the kneading elements of the third-zone stirring paddle and the number of the static kneading elements in the same circumferential direction of the inner wall of the stirring tank may be the same or different.
The beneficial effects of the utility model reside in that:
the utility model discloses a stirring rake in three region and kneading the component for all can form the liquid film on the disk of windowing in the stirring rake with kneading the component and static kneading the component, there is periodic kneading effect between kneading the component of stirring rake on kneading the component and the stirred tank wall, can reduce the liquid film thickness and strengthen the surface renewal effect of liquid film.
Compare in traditional disc reactor and cage reactor, the utility model discloses an agitated vessel possesses more excellent film forming property and surface renewal performance, is applicable to the final polycondensation process of polyester.
Drawings
FIG. 1 is a front view of a horizontal single-shaft stirring apparatus for polyester finishing polymerization according to the present invention;
FIG. 2 shows a left side view of the horizontal uniaxial stirring apparatus;
FIG. 3 shows a top view of a horizontal single-shaft stirring apparatus;
FIG. 4 shows a windowed disc for a first zone paddle of a horizontal single axis mixing device.
FIG. 5 shows a windowed disc for a second zone paddle of a horizontal single axis mixing device.
FIG. 6 shows a windowed disk of a third zone paddle of a horizontal single axis mixing device.
In the figure, 1 is a stirring tank, 2 is a stirring shaft, 3, 4.2 and 5.2 are windowed disks, 4.1 and 5.1 are chevron-shaped kneading elements, and 6 is chevron-shaped static kneading elements.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-3, the apparatus comprises a stirring shaft 2 and a plurality of stirring paddles disposed in the stirring tank, the stirring paddles are fixedly connected to the stirring shaft 2, and the apparatus is characterized in that: the stirring shaft 2 is axially and sequentially divided into three areas, namely a first area, a second area and a third area, and the flowing direction of the fluid is sequentially the first area, the second area and the third area; the stirring paddles 3 in the first area are window-opening discs, the stirring paddles 3 in the second area and the stirring paddles 3 in the third area are both composed of one window-opening disc 4.2/5.2 and a plurality of Chinese character 'shan' shaped kneading elements 4.1/5.1, and the inner wall surface of the stirring tank in which the third area is located is fixedly provided with Chinese character 'shan' shaped static kneading elements 6 in the axial direction and the circumferential direction.
In the stirring paddles 3 in the second area and the third area, a plurality of chevron-shaped kneading elements 4.1/5.1 are fixedly connected to the periphery of the windowing disc 4.2/5.2 at intervals along the circumferential direction, the top end of each of the chevron-shaped kneading elements 4.1/5.1 is arranged along the radial direction of the windowing disc 4.2/5.2 and is fixedly connected to the outer edge of the windowing disc 4.2/5.2, the surface of each of the chevron-shaped kneading elements 4.1/5.1 is arranged along the direction vertical to the surface of the windowing disc 4.2/5.2, and the central axis of the stirring shaft 2 passes through the surface of the chevron-shaped kneading element 4.1/5.1.
A circle of static kneading elements 6 which are circumferentially arranged are arranged on the inner wall surface of the stirring groove between two adjacent stirring paddles 3 in the third area and between the last stirring paddle 3 in the third area and the first stirring paddle 3 in the second area, the static kneading elements 6 are circumferentially and uniformly distributed at intervals along the same circumference, and are radially positioned between the kneading elements 4.1/5.1 of the stirring paddles 3 and the stirring shaft 2.
The branches of the static kneading element 6 in the shape of Chinese character 'shan' are respectively positioned between one branch of the kneading element 4.1/5.1 in the stirring paddle 3 in the two sides and the windowed disc, and a small gap is kept between the branches.
A through hole for the coaxial penetration of the stirring shaft 2 is formed in the center of the windowing disc, and as shown in fig. 4-6, a plurality of through grooves are formed in the surface of the windowing disc around the through hole at intervals along the circumference to serve as windows.
The first, second and third zones differ in the size of the window shapes in the windowed discs of paddles 3. As shown in fig. 4-6, the window areas of the windowed discs of the paddles 3 in the first, second and third regions gradually decrease and gradually get closer to the stirring shaft 2.
At least one stirring paddle 3 is arranged in each of the first area, the second area and the third area, and in the specific implementation, a plurality of stirring paddles 3 are arranged in each area.
The distance between two adjacent stirring paddles 3 in the first area is smaller than the distance between two adjacent stirring paddles 3 in the second area and the third area. The distance between two adjacent stirring paddles 3 in the second area is the same as or different from the distance between two adjacent stirring paddles 3 in the third area.
In a specific embodiment, the paddles in the second region consist of a perforated disk 4.2 and a plurality of chevron-shaped kneading elements 4.1, and the paddles in the third region consist of a perforated disk 5.2 and a plurality of chevron-shaped kneading elements 5.1. The window area of the windowing disc 4.2 is smaller than that of the windowing disc 5.2, and the circumference arrangement is closer to the center.
Fluid flows in through the one end of stirred tank, and (mixing) shaft 2 receives the constantly rotatory stirring rake that drives three region of external drive to rotate in step, and then carries out stirring motion to the fluid, stirs the back through the order in first region, second region and third region in proper order, flows out after being stirred the processing from the other end of stirred tank.
Example (b):
the structure and principle of the reactor are as described above, and some reactor structural parameters are as follows: the diameter of stirred tank is 140mm, the diameter of stirred tank is 130mm, interval between the first region stirred tank is 40mm, interval between the second region stirred tank is 60mm, interval between the third region stirred tank is 60mm, the wall of third region stirred tank is along the static kneading component of two chevron types of circumference equipartition, the static kneading component of the wall of third region stirred tank along the axial in equipartition chevron type, interval between the static kneading component of two adjacent chevron types in the axial direction is 60mm.
Claims (9)
1. The utility model provides a horizontal unipolar agitated vessel, is including arranging (mixing) shaft (2) and a plurality of stirring rake in the stirred tank in, stirring rake fixed connection in (mixing) shaft (2), its characterized in that: the stirring shaft (2) is sequentially divided into three areas along the axial direction, and the three areas are sequentially divided into a first area, a second area and a third area according to the flowing direction of fluid; the stirring paddles (3) in the first area are window discs, the stirring paddles (3) in the second area and the stirring paddles (3) in the third area are both composed of one window disc (4.2, 5.2) and a plurality of chevron-shaped kneading elements (4.1, 5.1), and the inner wall surface of the stirring tank where the third area is located is fixedly provided with chevron-shaped static kneading elements (6) in the axial direction and the circumferential direction.
2. The horizontal single-shaft stirring apparatus according to claim 1, wherein: in the stirring paddles (3) in the second area and the third area, the peripheries of the windowing discs (4.2, 5.2) are fixedly connected with a plurality of chevron-shaped kneading elements (4.1, 5.1) at intervals along the circumferential direction, the top ends of the chevron shapes of the kneading elements (4.1, 5.1) are arranged along the radial directions of the windowing discs (4.2, 5.2) and are fixedly connected to the outer edges of the windowing discs (4.2, 5.2), and the surface of the chevron shape of each kneading element (4.1, 5.1) is arranged along the direction vertical to the surface of the windowing discs (4.2, 5.2).
3. The horizontal single-shaft stirring apparatus according to claim 1, wherein: and a circle of static kneading elements (6) which are circumferentially arranged are arranged on the inner wall surface of the stirring groove between every two adjacent stirring paddles (3) in the third region, the static kneading elements (6) are circumferentially and uniformly distributed at intervals along the same circumference, and are radially positioned between the kneading elements (4.1, 5.1) of the stirring paddles (3) and the stirring shaft (2).
4. The horizontal single-shaft stirring apparatus according to claim 1, wherein: the center of the windowing disc is provided with a through hole for the stirring shaft (2) to coaxially penetrate through, and the surface of the windowing disc around the through hole is provided with a plurality of through grooves at intervals along the circumference to serve as windows.
5. The horizontal single-shaft stirring apparatus according to claim 1, wherein: the shapes and sizes of the windows in the windowed discs of the stirring paddles (3) in the first area, the second area and the third area are different.
6. The horizontal uniaxial stirring apparatus according to claim 1 or 5, wherein: the areas of the windows in the windowing discs of the stirring paddles (3) in the first area, the second area and the third area are gradually reduced and gradually close to the stirring shaft (2).
7. The horizontal single-shaft stirring apparatus according to claim 1, wherein: at least one stirring paddle (3) of the first area, the second area and the third area is arranged.
8. The horizontal single-shaft stirring apparatus according to claim 1, wherein: the distance between two adjacent stirring paddles (3) in the first area is smaller than the distance between two adjacent stirring paddles (3) in the second area and the third area.
9. The horizontal single-shaft stirring apparatus according to claim 1, wherein: the distance between two adjacent stirring paddles (3) in the second area is the same as or different from the distance between two adjacent stirring paddles (3) in the third area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220019987.1U CN218422738U (en) | 2022-01-06 | 2022-01-06 | Horizontal single-shaft stirring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220019987.1U CN218422738U (en) | 2022-01-06 | 2022-01-06 | Horizontal single-shaft stirring equipment |
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| Publication Number | Publication Date |
|---|---|
| CN218422738U true CN218422738U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220019987.1U Active CN218422738U (en) | 2022-01-06 | 2022-01-06 | Horizontal single-shaft stirring equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245803A (en) * | 2022-01-06 | 2022-10-28 | 浙江理工大学 | Horizontal single-shaft stirring device for polyester final polycondensation |
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- 2022-01-06 CN CN202220019987.1U patent/CN218422738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245803A (en) * | 2022-01-06 | 2022-10-28 | 浙江理工大学 | Horizontal single-shaft stirring device for polyester final polycondensation |
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