CN217373025U - Continuous drying device and processing equipment for plastic particles - Google Patents
Continuous drying device and processing equipment for plastic particles Download PDFInfo
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- CN217373025U CN217373025U CN202221405791.2U CN202221405791U CN217373025U CN 217373025 U CN217373025 U CN 217373025U CN 202221405791 U CN202221405791 U CN 202221405791U CN 217373025 U CN217373025 U CN 217373025U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model discloses a continuous drying device for plastic particles, which comprises a drying mechanism, and a feeding mechanism, an air supply mechanism, an air draft mechanism and a discharging mechanism which are respectively communicated with the drying mechanism; the feeding mechanism and the air draft mechanism are communicated at the upper part of the drying mechanism, and the discharging mechanism and the air supply mechanism are communicated at the lower part of the drying mechanism; the air supply mechanism is used for feeding dry gas into the drying mechanism, the feeding mechanism is used for feeding plastic particles into the drying mechanism, and the discharging mechanism is used for outputting the plastic particles which are dried by the drying mechanism and cooled by the dry gas. The utility model discloses a plastic granules's continuous drying device can be so that plastic granules can heat the drying under higher temperature, can avoid plastic granules's caking again simultaneously, effectively realizes continuity of production and reduces the energy consumption of follow-up man-hour and production efficiency's promotion.
Description
Technical Field
The invention relates to the technical field of drying and processing of high polymer materials, in particular to a continuous drying device for plastic particles and processing equipment comprising the same.
Background
The traditional polymer plastic can be softened when heated to a temperature higher than the softening temperature in the dehumidification and drying process, and polymer plastic particles can be stuck together by the phenomenon, so that the polymer plastic particles are difficult to move and subsequent thermoforming (injection molding, compression molding and the like) production operation is stopped.
Disclosure of Invention
In view of this, in order to overcome the defects of the prior art, the utility model aims at providing a continuous type drying device of plastic granules, can avoid the problem that the plastic granules that traditional drying device leads to bonds the caking.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a continuous drying device for plastic particles comprises a drying mechanism, and a feeding mechanism, an air supply mechanism, an air draft mechanism and a discharging mechanism which are respectively communicated with the drying mechanism; the feeding mechanism and the air draft mechanism are communicated at the upper part of the drying mechanism, and the discharging mechanism and the air supply mechanism are communicated at the lower part of the drying mechanism; the air supply mechanism is used for feeding dry gas into the drying mechanism, the feeding mechanism is used for feeding plastic particles into the drying mechanism, and the discharging mechanism is used for outputting the plastic particles which are dried by the drying mechanism and cooled by the dry gas.
According to some preferred implementation aspects of the utility model, pan feeding mechanism includes into the hopper, connects material storehouse on dry mechanism upper portion, be used for making form the material storehouse in the negative pressure material fan, connect first pipeline between hopper and the material storehouse, connect the second pipeline between material storehouse and dry mechanism and connect third pipeline between material fan and the material storehouse.
According to some preferred implementation aspects of the present invention, the first pipeline is provided with a first valve, and the second pipeline is provided with a second valve.
According to some preferred implementation aspects of the present invention, the discharging mechanism includes a fourth pipeline communicated with the bottom of the drying mechanism and a third valve disposed on the fourth pipeline.
According to some preferred implementation aspects of the present invention, the air supply mechanism includes an air compressor, a fifth pipeline communicated between the air compressor and the bottom of the drying mechanism, and a dryer disposed on the fifth pipeline.
According to some preferred implementation aspects of the present invention, the air draft mechanism includes a vacuum pump and a sixth pipe communicated between the vacuum pump and the upper portion of the drying mechanism, and the vacuum pump is used for exhausting gas in the drying mechanism and making a negative pressure be formed in the drying mechanism. The vacuum degree (absolute pressure value of a vacuum pump) in the microwave dryer is 50-150 Pa.
According to some preferred aspects of the invention, the temperature of the drying gas is 5-15 ℃. The drying gas is drying gas with a dew point of-60 ℃, and is preferably inert gas. The flow rate of the drying gas is 12-14 m 3 /h。
According to some preferred embodiments of the invention, the drying mechanism is a microwave dryer. The heating temperature of the microwave dryer is set between the softening temperature and the melting point of the plastic particles.
The invention also provides processing equipment which comprises the continuous drying device for the plastic particles and the processing mechanism, wherein the discharging mechanism is arranged between the processing mechanism and the drying mechanism.
According to some preferred implementation aspects of the utility model, processing agency includes thermoforming screw rod material pipe and mould, thermoforming screw rod material pipe is used for getting into after melting plastic granules heating shaping in the mould.
Because of the implementation of above technical scheme, the utility model discloses compare with prior art and have following advantage: the utility model discloses a plastic granules's continuous drying device carries out the drying to plastic granules through drying mechanism, simultaneously, send into the lower dry gas of temperature in order to cool off plastic granules's surface in to drying mechanism through air supply mechanism, and then can make plastic granules can carry out the drying of heating under higher temperature, can avoid plastic granules's caking simultaneously again, effectively realizes continuity production and reduces the promotion of the energy consumption of follow-up man-hour and production efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view showing a structure of a continuous processing apparatus for plastic pellets according to a preferred embodiment of the present invention;
in the attached drawings, 1, a hopper is arranged; 2. a material bin; 3. an air compressor; 4. a microwave dryer; 5. a feeding fan; 6. a first valve; 7. a second valve; 8. a third valve; 9. thermoforming a screw material tube; 10. a mold; 11. an air dryer; 12 a vacuum pump; 13. a first conduit; 14. a second pipe; 15 a third conduit; 16. a fourth conduit; 17. a fifth pipeline; 18. and a sixth pipeline.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1, the continuous processing equipment for plastic granules in this embodiment includes a feeding mechanism, a drying mechanism, an air supply mechanism, an air draft mechanism, a discharging mechanism, and a processing mechanism. Wherein the drying mechanism is a microwave dryer 4, and the feeding mechanism, the air supply mechanism, the air draft mechanism and the discharging mechanism are all communicated with the microwave dryer 4. More specifically, in this embodiment, the feeding mechanism and the air draft mechanism are communicated with the upper portion of the microwave dryer 4, and the discharging mechanism and the air supply mechanism are communicated with the lower portion of the microwave dryer 4.
The feeding mechanism is used for feeding materials into the microwave dryer 4, and the discharging mechanism is communicated between the microwave dryer 4 and the processing mechanism and used for conveying plastic particles which are dried by the microwave dryer 4 and cooled by drying gas to the processing mechanism for processing. So that the plastic particles enter the microwave dryer 4 from the feeding mechanism for drying and then enter the discharging mechanism for discharging, and finally enter the processing mechanism, and the plastic particles move from top to bottom in the microwave dryer 4. The drying gas serves, on the one hand, to cool the surface of the plastic granules and, on the other hand, to remove moisture. And through carrying out the evacuation to microwave dryer's inside, on the one hand will have the gas of moisture to be taken away, and on the other hand is used for reducing the pressure in the microwave dryer, has reduced the boiling point of water for moisture in the material can spread to the surface of granule through pressure differential and concentration difference, further accelerates dehumidification, dry effect.
The air supply mechanism is used for supplying low-temperature (5-15 ℃) dry air into the microwave dryer 4 and cooling the surfaces of the high-temperature plastic particles. The air draft mechanism is used for pumping away the gas which absorbs moisture in the microwave dryer 4 and maintaining a certain negative pressure in the microwave dryer 4, so that on one hand, the microwave drying is better realized, and on the other hand, the gas enters the microwave dryer 4 from the lower part of the microwave dryer 4 and is discharged from the upper part of the microwave dryer 4. That is, the gas moves from bottom to top in the microwave dryer 4, and the moving direction of the gas is opposite to that of the plastic particles in the microwave dryer 4, so that the gas and the plastic particles are fully mixed, the temperature of the surfaces of the plastic particles is reduced through the gas, the plastic particles and the moisture in the microwave dryer 4 are taken away, and the staying time of the plastic particles in the microwave dryer 4 can be controlled through controlling the flow of the gas.
The moving direction of the gas and the plastic particles is shown by arrows in fig. 1, wherein the solid line arrows represent the moving direction of the plastic particles, and the dotted line arrows represent the moving direction of the gas.
The feeding mechanism in the embodiment comprises a feeding hopper 1, a material bin 2 connected to the upper part of a microwave dryer 4, a feeding fan 5 used for enabling negative pressure to be formed in the material bin 2, a first pipeline 13 connected between the feeding hopper 1 and the material bin 2, a second pipeline 14 connected between the material bin 2 and the microwave dryer 4, a third pipeline 15 connected between the feeding fan 5 and the material bin 2, a first valve 6 arranged on the first pipeline 13 and a second valve 7 arranged on the second pipeline 14, wherein after the feeding fan 5 is started, negative pressure is formed in the material bin 2, and plastic particles in the feeding hopper 1 are sucked into the material bin 2 under the condition that the first valve 6 is opened; with the second valve 7 open, the plastic granules in the material bin 2 enter the microwave dryer 4 for drying.
The discharging mechanism in this embodiment comprises a fourth pipeline 16 communicated between the bottom of the microwave dryer 4 and the processing mechanism, and a third valve 8 arranged on the fourth pipeline 16, wherein when the third valve 8 is opened, the plastic particles at the bottom of the microwave dryer 4 enter the processing mechanism through the fourth pipeline 16.
The air supply mechanism in this embodiment includes an air compressor 3, a fifth pipeline 17 communicated between the air compressor 3 and the bottom of the microwave dryer 4, and a dryer 11 disposed on the fifth pipeline 17, the air compressor 3 can generate air with a certain flow rate, the dryer 11 is used for filtering water in the air, and finally, the dried air with a lower temperature is delivered to the microwave dryer 4 and has a certain air flow rate.
The air draft mechanism in the embodiment comprises a vacuum pump 12 and a sixth pipeline 18 communicated between the vacuum pump 12 and the upper part of the microwave dryer 4, wherein the vacuum pump 12 is used for exhausting air in the microwave dryer 4 and enabling a certain negative pressure to be formed in the microwave dryer 4.
The processing mechanism in this embodiment includes a thermal forming screw material tube 9 and a mold 10, and the plastic particles after microwave drying enter the thermal forming screw material tube 9 through a fourth pipeline 16, and enter the mold 10 after the thermal forming screw material tube 9 is heated to be molten, sheared and compressed to be manufactured into a product.
The continuous drying method adopting the continuous drying equipment for the plastic particles comprises the following steps: heating plastic particles by using a microwave dryer, continuously feeding the plastic particles into the microwave dryer from the upper part of the microwave dryer, continuously discharging the plastic particles from the lower part of the microwave dryer, and performing microwave drying and heating the plastic particles to a temperature above the softening point of the plastic particles when the plastic particles move from the upper part to the lower part of the microwave dryer; meanwhile, continuously blowing drying gas into the microwave dryer from the lower part of the microwave dryer for cooling the surface of the plastic particles, controlling the residence time of the plastic particles in the microwave dryer and vacuumizing the microwave dryer through the upper part of the microwave dryer. The plastic particles run in the microwave dryer in the opposite direction to the drying gas. That is, the plastic particles move from top to bottom, the microwave heats the plastic particles in the process of moving from top to bottom, and the gas moves from bottom to top and is used for cooling the surface temperature of the plastic particles.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A continuous drying device for plastic particles is characterized by comprising a drying mechanism, and a feeding mechanism, an air supply mechanism, an air draft mechanism and a discharging mechanism which are respectively communicated with the drying mechanism; the feeding mechanism and the air draft mechanism are communicated at the upper part of the drying mechanism, and the discharging mechanism and the air supply mechanism are communicated at the lower part of the drying mechanism; the air supply mechanism is used for feeding dry gas into the drying mechanism, the feeding mechanism is used for feeding plastic particles into the drying mechanism, and the discharging mechanism is used for outputting the plastic particles which are dried by the drying mechanism and cooled by the dry gas.
2. A continuous drying apparatus according to claim 1, wherein the feeding mechanism comprises a feeding hopper, a material bin connected to an upper portion of the drying mechanism, a feeding fan for forming a negative pressure in the material bin, a first pipeline connected between the feeding hopper and the material bin, a second pipeline connected between the material bin and the drying mechanism, and a third pipeline connected between the feeding fan and the material bin.
3. A continuous drying apparatus according to claim 2, wherein the first conduit is provided with a first valve and the second conduit is provided with a second valve.
4. A continuous drying apparatus according to claim 1, wherein the discharging mechanism comprises a fourth pipe communicated with the bottom of the drying mechanism and a third valve arranged on the fourth pipe.
5. A continuous drying apparatus according to claim 1, wherein the air supply mechanism includes an air compressor, a fifth duct communicating between the air compressor and a bottom of the drying mechanism, and a dryer provided on the fifth duct.
6. A continuous drying apparatus according to claim 1, wherein the air draft mechanism comprises a vacuum pump for exhausting air in the drying mechanism and generating negative pressure in the drying mechanism, and a sixth pipeline communicating between the vacuum pump and the upper part of the drying mechanism.
7. A continuous drying apparatus according to claim 1, wherein the temperature of the drying gas is 5 to 15 ℃.
8. A continuous drying apparatus according to any one of claims 1-7, characterized in that the drying means is a microwave dryer.
9. A processing plant, characterized in that it comprises a continuous drying device for plastic granules according to any one of claims 1 to 8 and a processing means, said outfeed means being arranged between said processing means and said drying means.
10. The processing equipment as claimed in claim 9, wherein the processing mechanism comprises a thermoforming screw material pipe and a mold, and the thermoforming screw material pipe is used for heating and melting plastic particles and then enabling the plastic particles to enter the mold for molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221405791.2U CN217373025U (en) | 2022-06-07 | 2022-06-07 | Continuous drying device and processing equipment for plastic particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221405791.2U CN217373025U (en) | 2022-06-07 | 2022-06-07 | Continuous drying device and processing equipment for plastic particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217373025U true CN217373025U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221405791.2U Active CN217373025U (en) | 2022-06-07 | 2022-06-07 | Continuous drying device and processing equipment for plastic particles |
Country Status (1)
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| CN (1) | CN217373025U (en) |
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2022
- 2022-06-07 CN CN202221405791.2U patent/CN217373025U/en active Active
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