CN110145923B - Injection molding raw material drying equipment and method - Google Patents
Injection molding raw material drying equipment and method Download PDFInfo
- Publication number
- CN110145923B CN110145923B CN201910382691.9A CN201910382691A CN110145923B CN 110145923 B CN110145923 B CN 110145923B CN 201910382691 A CN201910382691 A CN 201910382691A CN 110145923 B CN110145923 B CN 110145923B
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- 239000002994 raw material Substances 0.000 title claims abstract description 56
- 238000001035 drying Methods 0.000 title claims abstract description 39
- 238000001746 injection moulding Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000008247 solid mixture Substances 0.000 claims abstract description 12
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 8
- 241000251468 Actinopterygii Species 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/10—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses injection molding raw material drying equipment and method, wherein the injection molding raw material drying equipment comprises a mixing cylinder, the bottom end of the mixing cylinder is communicated with a heater and a feeding pipe, the air inlet of the heater is communicated with a dryer, the top end of the mixing cylinder is communicated to an air extractor through a bent pipe, the air extractor pumps raw materials to a material using mechanism, a spoiler is arranged in the mixing cylinder, the spoiler is distributed on the inner wall of the mixing cylinder in an annular fish scale shape, and the middle part of the spoiler inclines towards the joint of a feeding port and the mixing cylinder; in the implementation of the invention, the dried hot air is used for fully mixing, the specific surface area and the flow rate of the particles and the drying medium are high, the heating is more uniform, and the drying effect is better; mixing dry hot air with the raw materials, generating vortex by a spoiler to promote the dry hot air to be fully mixed with the raw materials, fully mixing the mixed gas-solid mixture, absorbing the moisture of the solid raw materials by the dry hot air with the water content lower than the saturated state, and pumping the gas-solid mixture to a material using mechanism by a negative pressure end.
Description
Technical Field
The invention relates to the field of plastic raw material pretreatment equipment and technology, in particular to injection molding raw material drying equipment and method.
Background
Prior to the injection molding process of plastics, the raw materials in the form of granules are subjected to a preliminary treatment, the most important of which is drying. The traditional way uses hot air for drying, and the principle is that after the air is heated, the upper limit of the saturated water content of the air is increased, so that the moisture of the raw material particles is absorbed.
The patent with the publication number of CN205731939U discloses a dry sieving mechanism of living beings granule, its sieve case (1) including the slope setting, sieve case (1) bottom is fixed with support frame (2), sieve case (1) bottom is connected with vibrating motor, sieve case (1) internal fixation has conveyor, the conveyor lower extreme is connected with out hopper (3), sieve case (1) bottom shaping has the waste material export, conveyor is the U-shaped bank of cells, the axial lead direction of U-shaped bank of cells and the slope direction level of sieve case (1) are perpendicular, the U-shaped bank of cells is including heating tank (4) that are located the upper end and screening tank (5) that are located the lower extreme, be equipped with electric heating element in heating tank (4). In the above scheme, after the heating tank is heated by the electric heating assembly, if the drying purpose is required to be achieved in a short time, the high-temperature state of the heating tank needs to be maintained, and the over-temperature damage of the dried object is easily caused.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide the injection molding raw material drying equipment and the injection molding raw material drying method, wherein the specific surface area and the flow rate of particles and a drying medium are improved by using dry hot air, the heating is more uniform, and the drying effect is better.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the injection molding raw material drying equipment comprises a mixing cylinder, wherein the bottom end of the mixing cylinder is communicated with a heater and a feeding pipe, an air inlet of the heater is communicated with a dryer, the top end of the mixing cylinder is communicated with an air extractor through a bent pipe, and the air extractor pumps raw materials to a material using mechanism;
the mixing drum is internally provided with spoilers which are distributed on the inner wall of the mixing drum in an annular fish scale shape, and the middle parts of the spoilers are inclined towards the connecting part of the feed inlet and the mixing drum.
Further, the bottom of the mixing cylinder is conical.
Furthermore, the number of the heaters is more than two, and the heaters are symmetrically distributed and communicated with the side wall at the bottom end of the mixing cylinder.
Further, the middle part of the bottom end of the mixing cylinder is communicated with a feeding pipe.
Further, a granular drying agent is arranged inside the dryer.
Furthermore, the air inlet of the dryer is communicated with a booster pump, and the sum of the pressures of the booster pump is smaller than that of the air extractor.
Furthermore, the lower end in the middle of the elbow is communicated with a storage barrel, and a filter screen is arranged between the tail end of the elbow and the air pump.
Furthermore, the side walls of the storage cylinder and the tail end of the elbow pipe incline towards the outer side direction, the filter screen covers the inclined part of the side wall towards the outer side direction, and the top end of the storage cylinder is provided with a flow blocking sheet which inclines towards the airflow direction.
A method for drying raw materials of injection molding parts comprises the following steps,
step S1, mixing the dry hot air with the raw materials, and generating vortex by a spoiler to promote the dry hot air to be fully mixed with the raw materials;
step S2, fully mixing the mixed gas-solid mixture, and absorbing the moisture of the solid raw material by dry hot air with the moisture content lower than the saturated state;
step S3, pumping the gas-solid mixture to the material using mechanism by the negative pressure end
Further, in step S3, a storage cylinder is disposed between the negative pressure end and the gas-solid mixing mechanism, the air pressure in the storage cylinder is communicated with the negative pressure end and is kept consistent, and the dried solid raw material enters the storage cylinder due to the gravity.
The benefit effects of the invention are:
the dried dry hot air is used for fully mixing, the specific surface area and the flow rate of the particles and the drying medium are high, the heating is more uniform, and the drying effect is better; mixing dry hot air with the raw materials, generating vortex by a spoiler to promote the dry hot air to be fully mixed with the raw materials, fully mixing the mixed gas-solid mixture, absorbing the moisture of the solid raw materials by the dry hot air with the water content lower than the saturated state, and pumping the gas-solid mixture to a material using mechanism by a negative pressure end.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first embodiment of a drying apparatus according to the present invention;
fig. 2 is a schematic view of a second embodiment of the drying apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention is:
a raw material drying device for injection molding parts comprises a mixing cylinder 1, wherein the bottom end of the mixing cylinder 1 is communicated with a heater 2 and a feeding pipe 4, an air inlet of the heater 2 is communicated with a dryer 3, the top end of the mixing cylinder 1 is communicated to an air extractor 6 through a bent pipe 5, and the air extractor 6 pumps raw materials to a material using mechanism;
the mixing drum 1 is internally provided with the spoiler 101, the spoiler 101 is distributed on the inner wall of the mixing drum 1 in an annular fish scale shape, and the middle part of the spoiler 101 inclines towards the joint of the feed port 4 and the mixing drum 1.
Preferably, the bottom of the mixing drum 1 is conical.
Preferably, the number of the heaters 2 is more than two, and the heaters are symmetrically distributed and communicated with the side wall of the bottom end of the mixing drum 1.
Preferably, the middle of the bottom end of the mixing drum 1 is communicated with a feeding pipe 4.
Preferably, a granular drying agent is provided inside the dryer 3.
Preferably, the air inlet of the dryer 3 is communicated with a booster pump 11, and the sum of the pressures of the booster pump 11 is smaller than the pressure of the air extractor 6.
Preferably, the lower end of the middle part of the elbow 5 is communicated with a storage cylinder 7, and a filter screen 8 is arranged between the tail end of the elbow 5 and the air pump 6.
Preferably, the storage cylinder 7 and the side wall of the end of the elbow pipe 5 are inclined towards the outer side, the filter screen 8 covers the inclined part of the side wall towards the outer side, the top end of the storage cylinder 7 is provided with a flow blocking sheet 10, and the flow blocking sheet 10 is inclined towards the air flow direction.
A method for drying raw materials of injection molding parts comprises the following steps,
step S1, mixing the dry hot air with the raw materials, and generating vortex by the spoiler 101 to promote the dry hot air to be fully mixed with the raw materials;
step S2, fully mixing the mixed gas-solid mixture, and absorbing the moisture of the solid raw material by dry hot air with the moisture content lower than the saturated state;
step S3, pumping the gas-solid mixture to the material using mechanism by the negative pressure end
Preferably, in step S3, a storage cylinder 7 is disposed between the negative pressure end and the gas-solid mixing mechanism, the air pressure in the storage cylinder 7 is communicated with and kept consistent with the negative pressure end, and the dried solid raw material enters the storage cylinder 7 due to the gravity.
The first embodiment is as follows:
the bottom end of the mixing cylinder 1 is communicated with a heater 2 and a feeding pipe 4, an air inlet of the heater 2 is communicated with a dryer 3, the top end of the mixing cylinder 1 is communicated to an air pump 6 through a bent pipe 5, and the air pump 6 pumps the raw materials to a material using mechanism; a spoiler 101 is arranged in the mixing cylinder 1, the spoiler 101 is annularly arranged on the inner wall of the mixing cylinder 1 in a fish scale shape, and the middle part of the spoiler 101 inclines towards the joint of the feed port 4 and the mixing cylinder 1;
mixing dry hot air with the raw materials, generating vortex by the spoiler 101 to promote the dry hot air to be fully mixed with the raw materials, fully mixing the mixed gas-solid mixture, absorbing the moisture of the solid raw materials by the dry hot air with the water content lower than the saturated state, and pumping the gas-solid mixture to a material using mechanism by a negative pressure end.
Example two:
the bottom end of the mixing cylinder 1 is communicated with a heater 2 and a feeding pipe 4, the bottom of the mixing cylinder 1 is conical, the number of the heaters 2 is more than two, the heaters 2 are symmetrically distributed and communicated with the side wall of the bottom end of the mixing cylinder 1, the middle part of the bottom end of the mixing cylinder 1 is communicated with the feeding pipe 4, an air inlet of the heater 2 is communicated with a dryer 3, the top end of the mixing cylinder 1 is communicated with an air pump 6 through a bent pipe 5, an air inlet of the dryer 3 is communicated with a booster pump 11, the sum of the pressures of the booster pump 11 is smaller than that of the air pump 6, the air pump 6 pumps raw materials to a material using mechanism, the lower end of the middle part of the bent pipe 5 is communicated with a storage cylinder 7, a filter screen 8 is arranged between the tail end of the bent pipe; a spoiler 101 is arranged in the mixing cylinder 1, the spoiler 101 is annularly arranged on the inner wall of the mixing cylinder 1 in a fish scale shape, and the middle part of the spoiler 101 inclines towards the joint of the feed port 4 and the mixing cylinder 1;
mix dry hot air and raw materials, the vortex is produced to spoiler 101, promote dry hot air and raw materials intensive mixing, gaseous-solid-state mixture intensive mixing after mixing, the moisture of solid-state raw materials is absorbed by the dry hot air that the water content is less than the saturated state, the negative pressure end is with gaseous-solid-state mixture pump delivery to material mechanism, set up storage cylinder 7 between negative pressure end and the gaseous-solid-state mixing mechanism, atmospheric pressure and negative pressure end intercommunication in the storage cylinder 7 keep unanimous, then solid-state raw materials after the drying because of the action of gravity, get into storage cylinder 7 in, the raw materials after will being tentatively dried are stored to storage cylinder 7 in, later under the influence of slow dry hot air current, further drying.
In the above-mentioned operation, compare traditional mode, use the dry hot-blast intensive mixing that carries out after the drying, the specific surface area and the velocity of flow of high particulate matter and drying medium, it is more even to heat, and drying effect is better.
In the description herein, references to the terms "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides an injection molding raw materials drying equipment which characterized in that: the mixing device comprises a mixing cylinder (1), wherein the bottom end of the mixing cylinder (1) is communicated with a heater (2) and a feeding pipe (4), an air inlet of the heater (2) is communicated with a dryer (3), the top end of the mixing cylinder (1) is communicated to an air pump (6) through a bent pipe (5), and the air pump (6) pumps raw materials to a material using mechanism;
the mixing drum is characterized in that a spoiler (101) is arranged in the mixing drum (1), the spoiler (101) is distributed on the inner wall of the mixing drum (1) in an annular fish scale shape, and the middle part of the spoiler (101) inclines to the joint of the feeding pipe (4) and the mixing drum (1).
2. The injection molding raw material drying apparatus of claim 1, wherein: the bottom of the mixing cylinder (1) is conical.
3. The injection molding raw material drying apparatus of claim 2, wherein: the number of the heaters (2) is more than two, and the heaters are symmetrically distributed and communicated with the side wall of the bottom end of the mixing cylinder (1).
4. The injection molding raw material drying apparatus of claim 2, wherein: the middle part of the bottom end of the mixing drum (1) is communicated with a feeding pipe (4).
5. The injection molding raw material drying apparatus of claim 1, wherein: and a granular drying agent is arranged in the dryer (3).
6. The injection molding raw material drying apparatus of claim 1, wherein: an air inlet of the dryer (3) is communicated with a booster pump (11), and the sum of the pressures of the booster pump (11) is smaller than that of the air extractor (6).
7. The injection molding raw material drying apparatus of claim 1, wherein: the lower end of the middle part of the elbow pipe (5) is communicated with a storage barrel (7), and a filter screen (8) is arranged between the tail end of the elbow pipe (5) and the air pump (6).
8. The injection molding feedstock drying apparatus of claim 7, wherein: the lateral wall of the tail end of the storage cylinder (7) and the bent pipe (5) inclines towards the outer side direction, the filter screen (8) covers the inclined part of the lateral wall towards the outer side direction, the top end of the storage cylinder (7) is provided with a flow blocking sheet (10), and the flow blocking sheet (10) inclines towards the air flow direction.
9. A method for drying raw materials of injection molding parts is characterized by comprising the following steps: the injection molding raw material drying method can implement at least the injection molding raw material drying apparatus of any one of claims 1 to 8;
the method also comprises the following steps of,
step S1, mixing the dry hot air with the raw materials, and generating vortex by the spoiler (101) to promote the dry hot air to be fully mixed with the raw materials;
step S2, fully mixing the mixed gas-solid mixture, and absorbing the moisture of the solid raw material by dry hot air with the moisture content lower than the saturated state;
and step S3, pumping the gas-solid mixture to a material using mechanism by a negative pressure end generated by the air pump (6).
10. A method of drying a feedstock for injection molded parts according to claim 9, wherein: in the step S3, a storage cylinder (7) is disposed between the negative pressure end and the gas-solid mixing mechanism, and the air pressure in the storage cylinder (7) is communicated with and kept consistent with the negative pressure end, so that the dried solid raw material enters the storage cylinder (7) due to the gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382691.9A CN110145923B (en) | 2019-05-09 | 2019-05-09 | Injection molding raw material drying equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382691.9A CN110145923B (en) | 2019-05-09 | 2019-05-09 | Injection molding raw material drying equipment and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145923A CN110145923A (en) | 2019-08-20 |
| CN110145923B true CN110145923B (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910382691.9A Expired - Fee Related CN110145923B (en) | 2019-05-09 | 2019-05-09 | Injection molding raw material drying equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118031553B (en) * | 2024-04-12 | 2024-07-16 | 浙江兄弟药业有限公司 | Multi-layer self-screening type drying granulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2511331A (en) * | 2013-02-28 | 2014-09-03 | Dickinson Legg Ltd | Drying Apparatus |
| CN205066369U (en) * | 2015-09-16 | 2016-03-02 | 湖北水之翼科技有限公司 | Novel dryer |
| CN207716724U (en) * | 2017-12-29 | 2018-08-10 | 铜陵瑞莱科技有限公司 | A kind of Pneumatic drying device |
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