CN215319877U - Drying device for biaxial stretching polyester film production line - Google Patents
Drying device for biaxial stretching polyester film production line Download PDFInfo
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- CN215319877U CN215319877U CN202121792321.1U CN202121792321U CN215319877U CN 215319877 U CN215319877 U CN 215319877U CN 202121792321 U CN202121792321 U CN 202121792321U CN 215319877 U CN215319877 U CN 215319877U
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Abstract
The utility model discloses a drying device for a biaxially oriented polyester film production line, which comprises a boiling crystallization bed, a drying tower and a cyclone separator, wherein the boiling crystallization bed is arranged on the top of the drying tower; the feed inlet of the drying tower is communicated with the discharge outlet of the boiling crystallization bed, and the feed inlet of the cyclone separator is communicated with the air outlet of the boiling crystallization bed; a hollow stirring shaft is arranged in the drying tower, and hollow stirring blades communicated with the hollow stirring shaft are arranged on the hollow stirring shaft; the hollow stirring blade is provided with an air outlet; crushing teeth are arranged on the inner wall of the boiling crystallization bed and the inner wall of the drying tower; the bottom of the cyclone separator is communicated with a dust collecting tank; still include the hot-air storage tank, the air outlet of hot-air storage tank and the bottom intercommunication of cavity form (mixing) shaft. The device not only drying effect is good, and can smash the raw materials in the drying process, and the raw materials can not agglomerate, has improved the quality of film.
Description
Technical Field
The utility model relates to the technical field of film production, in particular to a drying device for a biaxially oriented polyester film production line.
Background
PET polyester chip and PET diaphragm reclaimed materials are often used in the production of polyester films, the PET water absorption rate is high, and before melt extrusion, the PET chip and the PET diaphragm reclaimed materials need to be dried in advance to remove moisture, so that raw materials are prevented from caking in a drying tower or bridging in a feeding section of an extruder due to the fact that the moisture is too high, hydrolysis reaction in raw material processing is reduced, and production stability, thickness uniformity and product performance are ensured.
Although the existing drying device for the polyester chip raw materials can effectively remove moisture in the raw materials, the drying device is easy to agglomerate in the drying process, so that the drying effect is influenced, and a discharge hole is easy to block, so that the feeding of an extruder is not smooth, the fluctuation of extrusion pressure and die pressure is caused, and the quality of a film is influenced.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: aiming at the defects in the prior art, the drying device for the biaxially oriented polyester film production line is provided, the drying device is good in drying effect, raw materials can be crushed in the drying process, the raw materials cannot be agglomerated, and the quality of the film is improved.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a drying device for a biaxial stretching polyester film production line comprises a boiling crystallization bed, a drying tower and a cyclone separator; the feed inlet of the drying tower is communicated with the discharge outlet of the boiling crystallization bed, and the feed inlet of the cyclone separator is communicated with the air outlet of the boiling crystallization bed;
a hollow stirring shaft is arranged in the drying tower and is connected with a stirring motor at the top of the drying tower; a hollow stirring blade communicated with the hollow stirring shaft is arranged on the hollow stirring shaft; the hollow stirring blade is provided with an air outlet;
crushing teeth are arranged on the inner wall of the boiling crystallization bed and the inner wall of the drying tower; the bottom of the cyclone separator is communicated with a dust collecting tank;
still include the hot-air storage tank, the air outlet of hot-air storage tank and the bottom intercommunication of cavity form (mixing) shaft.
Preferably, the bottom of the left side of the boiling crystallization bed is provided with a hot air inlet, and a filter screen is vertically arranged between the hot air inlet and the discharge port at the bottom in the boiling crystallization bed.
Preferably, in the above aspect, a heat conductive layer is provided on a surface of the hollow stirring blade.
Preferably, the air outlet is provided with turbulence teeth.
Preferably, the gas outlet of the cyclone is communicated with the hot air storage tank through a buffer tank.
Preferably, in the above technical means, a strainer is also provided in the buffer tank.
Preferably, the gas outlet of the cyclone separator is provided with a conical elastic baffle.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that:
the utility model provides a drying device for a biaxial stretching polyester film production line, which comprises a boiling crystallization bed, a drying tower and a cyclone separator, wherein the boiling crystallization bed is arranged on the top of the drying tower; the feed inlet of the drying tower is communicated with the discharge outlet of the boiling crystallization bed, and the feed inlet of the cyclone separator is communicated with the air outlet of the boiling crystallization bed; the polyester film raw material enters a boiling crystallization bed to be boiled and remove the moisture on the surface of the raw material, so that the surface of the raw material is dried and does not have the phenomenon of agglomeration in subsequent drying. A hollow stirring shaft is arranged in a drying tower of the device, and a hollow stirring blade communicated with the hollow stirring shaft is arranged on the hollow stirring shaft; the hollow stirring blade is provided with the air outlet, hot air enters the hollow stirring shaft and is discharged from the air outlet of the hollow stirring blade, hot air is effectively shunted, and drying is carried out while stirring, so that drying is more thorough. The inner walls of the fluidized crystallization bed and the drying tower of the device are provided with crushing teeth; the material can be effectively crushed while being dried, so that the caking phenomenon of the material is avoided, and the bottom of the cyclone separator of the device is communicated with a dust collecting tank; the hot wind discharged from the boiling crystallization bed is separated by the cyclone separator, the dust enters the dust collecting tank, and the hot wind is discharged from the gas outlet and enters the hot air storage tank for recycling, so that the energy is saved.
The left side bottom of the boiling crystallization bed of this device is provided with hot-blast import, and the bottom in the boiling crystallization bed is vertical between hot-blast import and discharge gate to be provided with the filter screen, effectively intercepts the jumbo size material fully to be smashed, prevents that the large granule material from entering into the drying tower in, influence film production quality.
The surface of the hollow stirring blade of the device is provided with the heat conduction layer, so that the heat exchange efficiency between materials is improved, and the drying effect is improved. The air outlet of the device is provided with the turbulence teeth, so that air flow is effectively disturbed, and the heat exchange efficiency between hot air and materials and between the materials is improved.
The gas outlet of the cyclone separator of the device is communicated with the hot air storage tank through the buffer tank. A filter screen is also arranged in the buffer tank. The hot air obtained after the separation of the cyclone separator can be recycled, and the filter screen in the buffer tank can effectively filter the dust mixed in the hot air. The gas outlet of the cyclone separator of the device is provided with the conical elastic baffle, the hot air after separation touches the conical elastic baffle at the gas outlet, and dust mixed in the hot air can enter the cyclone separator again for separation, so that the purity of the hot air is improved.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of an empty stirring vane in the embodiment of the present invention;
in the figure, 1, a boiling crystallization bed; 2. a drying tower; 3. a cyclone separator; 4. a feed inlet; 5. a discharge port; 6. a hot air inlet; 7. filtering with a screen; 8. a hollow stirring shaft; 9. a hollow stirring blade; 10. an air outlet; 11. crushing teeth; 12. a dust collection tank; 13. a hot air storage tank; 14. a gas outlet; 15. a buffer tank; 16. turbulence teeth; 17. a conical elastic baffle; 18. a raw material inlet; 19. a stirring motor.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Examples
As shown in fig. 1 and fig. 2, a drying device for a biaxially oriented polyester film production line comprises a boiling crystallization bed 1, a drying tower 2 and a cyclone separator 3; a feed inlet 4 of the drying tower 2 is communicated with a discharge outlet 5 of the boiling crystallization bed 1, and a feed inlet 4 of the cyclone separator 3 is communicated with an air outlet of the boiling crystallization bed 1; the polyester film raw material enters the boiling crystallization bed from the raw material inlet 18 to be boiled and remove the moisture on the surface of the raw material, so that the phenomenon of agglomeration does not occur in the subsequent drying when the surface of the raw material is dried. A hot air inlet 6 is formed in the bottom of the left side of the boiling crystallization bed 1, and a filter screen 7 is vertically arranged between the hot air inlet 6 and the discharge port 5 at the bottom in the boiling crystallization bed 1; effectively intercept jumbo size material and fully smash, prevent that large granule material from entering into the drying tower in, influencing film production quality.
A hollow stirring shaft 8 is arranged in the drying tower 2, and the hollow stirring shaft 8 is connected with a stirring motor 19 at the top of the drying tower 2; a hollow stirring blade 9 communicated with the hollow stirring shaft 8 is arranged on the hollow stirring shaft 8; the hollow stirring blade 9 is provided with an air outlet 10; the hot air enters the hollow stirring shaft and is discharged from the air outlet holes of the hollow stirring blades, hot air flow is effectively shunted, and drying is carried out while stirring, so that drying is more thorough.
Crushing teeth 11 are arranged on the inner wall of the boiling crystallization bed 1 and the inner wall of the drying tower 2; when the material carries out the drying, smash the tooth and can effectively smash the material, avoid the phenomenon that the caking appears in the material. The bottom of the cyclone separator 3 is communicated with a dust collecting tank 12; the hot air stirring device further comprises a hot air storage tank 13, wherein an air outlet of the hot air storage tank 13 is communicated with the bottom of the hollow stirring shaft 8; the gas outlet 14 of the cyclone separator 3 is communicated with the hot air storage tank 13 through a buffer tank 15; the buffer tank 15 is also internally provided with a filter screen 7.
The hot wind discharged from the boiling crystallization bed is separated by the cyclone separator, the dust enters the dust collecting tank, and the hot wind is discharged from the gas outlet and enters the hot air storage tank for recycling, so that the energy is saved. The filter screen in the buffer tank can effectively filter the dust mixed with in the hot air.
In the present device, a heat conductive layer (not shown) is provided on the surface of the hollow stirring vane 9. The heat exchange efficiency between the materials is improved, and the drying effect is improved. The air outlet 10 is provided with spoiler teeth 16. Effectively disturb the air flow and further improve the heat exchange efficiency between the hot air and the materials and between the materials. A conical elastic baffle 17 is arranged at the gas outlet 14 of the cyclone separator 3; the separated hot air touches the conical elastic baffle at the gas outlet, and the dust in the hot air can enter the cyclone separator again for separation, thereby improving the purity of the hot air.
Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (7)
1. A drying device for a biaxial stretching polyester film production line is characterized in that: comprises a boiling crystallization bed, a drying tower and a cyclone separator; the feed inlet of the drying tower is communicated with the discharge outlet of the boiling crystallization bed, and the feed inlet of the cyclone separator is communicated with the air outlet of the boiling crystallization bed;
a hollow stirring shaft is arranged in the drying tower and is connected with a stirring motor at the top of the drying tower; a hollow stirring blade communicated with the hollow stirring shaft is arranged on the hollow stirring shaft; the hollow stirring blade is provided with an air outlet;
crushing teeth are arranged on the inner wall of the boiling crystallization bed and the inner wall of the drying tower; the bottom of the cyclone separator is communicated with a dust collecting tank;
still include the hot-air storage tank, the air outlet of hot-air storage tank and the bottom intercommunication of cavity form (mixing) shaft.
2. The drying apparatus for a biaxially oriented polyester film production line according to claim 1, wherein: the left side bottom of the boiling crystallization bed is provided with a hot air inlet, and a filter screen is vertically arranged at the bottom in the boiling crystallization bed between the hot air inlet and a discharge port.
3. The drying apparatus for a biaxially oriented polyester film production line according to claim 1, wherein: and the surface of the hollow stirring blade is provided with a heat conduction layer.
4. The drying apparatus for a biaxially oriented polyester film production line according to claim 1, wherein: and turbulent flow teeth are arranged at the air outlet.
5. The drying apparatus for a biaxially oriented polyester film production line according to claim 1, wherein: and a gas outlet of the cyclone separator is communicated with the hot air storage tank through a buffer tank.
6. The drying apparatus for a biaxially oriented polyester film production line according to claim 5, wherein: a filter screen is also arranged in the buffer tank.
7. The drying apparatus for a biaxially oriented polyester film production line according to claim 5, wherein: the gas outlet of the cyclone separator is provided with a conical elastic baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792321.1U CN215319877U (en) | 2021-08-03 | 2021-08-03 | Drying device for biaxial stretching polyester film production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792321.1U CN215319877U (en) | 2021-08-03 | 2021-08-03 | Drying device for biaxial stretching polyester film production line |
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| Publication Number | Publication Date |
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| CN215319877U true CN215319877U (en) | 2021-12-28 |
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| CN202121792321.1U Active CN215319877U (en) | 2021-08-03 | 2021-08-03 | Drying device for biaxial stretching polyester film production line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116874996A (en) * | 2023-09-01 | 2023-10-13 | 山东龙兴塑膜科技股份有限公司 | Preparation method of modified polyester and application of modified polyester in polyester film for coated iron |
-
2021
- 2021-08-03 CN CN202121792321.1U patent/CN215319877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116874996A (en) * | 2023-09-01 | 2023-10-13 | 山东龙兴塑膜科技股份有限公司 | Preparation method of modified polyester and application of modified polyester in polyester film for coated iron |
| CN116874996B (en) * | 2023-09-01 | 2023-12-05 | 山东龙兴塑膜科技股份有限公司 | Preparation method of modified polyester and application of modified polyester in polyester film for coated iron |
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