CN110202771A - A kind of pelletizing template vacuum heat-insulation cover board - Google Patents
A kind of pelletizing template vacuum heat-insulation cover board Download PDFInfo
- Publication number
- CN110202771A CN110202771A CN201810121148.9A CN201810121148A CN110202771A CN 110202771 A CN110202771 A CN 110202771A CN 201810121148 A CN201810121148 A CN 201810121148A CN 110202771 A CN110202771 A CN 110202771A
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- CN
- China
- Prior art keywords
- cover plate
- template
- pelletizing
- vacuum heat
- cover board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to a kind of underwater pelletizer pelletizing template, in particular to a kind of pelletizing template vacuum heat-insulation cover board.Vacuum heat-insulation cover board proposed by the present invention is arranged in the inner ring and outer rings surface of pelletizing template, the conduction, convection current and radiation of these position heats can be obstructed, improve the thermal and insulating performance at these positions, reduce the speed that inner ring and outer rings region generated temperature drop under the action of cooling water is granulated belt edge transmitting to template, the temperature difference that template is granulated belt edge and centre is reduced, pelletizing quality is improved.A kind of pelletizing template vacuum heat-insulation cover board of the present invention includes: lower cover plate, intermediate supports Turbogrid plates, upper cover plate, high temperature resistant heat insulation coating.There is the high temperature resistant heat insulation coating on the inside of several not connected independent vacuum chambers and lower cover plate in vacuum heat-insulation cover plate main body region, has obstructed the loss of the outside convection current of pelletizing template internal heat, conduction, radiation.
Description
Technical field
The present invention relates to a kind of underwater pelletizer pelletizing template, in particular to a kind of pelletizing template vacuum heat-insulation cover board.
Background technique
Underwater pelletizer be melt be extruded pelletizing template be granulated belt surface contacted with cooling water solidify by grain-cutter pelletizing
Plastic granulator.Material under molten condition enters making of being heated under the extruding of extruder screw or Melting pump
In grain template feed cavity, then it is extruded to discharging die hole, extruding pelletization template is granulated belt surface, encounters cool water shower, melts
Material quick solidification, in spaced apart cutter gap, material is extruded into predetermined under the time difference of two certain corners of grain-cutter
The cylindrical body of length, the pelletizing blade rotated are cut away, the particle of formation rule.
Within pelletizing template, material viscosity wants low, and mobility will be got well, after being extruded pelletizing template granulation belt surface,
It is solidified after meeting cooling water, convenient for being formed by pelletizing.
Pelleter can be such that the temperature of template surface reduces after being granulated indoor cool water shower to template surface, template die hole
The material viscosity of interior certain depth improves, and is increased by the resistance of die hole, discharging speed reduces, and when serious, material blocks discharging
Die hole stops flowing, causes pelletizing size uneven, influence percent opening, these are all to need to avoid in pelletizing operation.Cause
This influences whether that the extrusion of the material of all die holes is consistent with pelletizing if the non-uniform temperature that template is granulated band is consistent.
Further analysis shows that template is granulated the phenomenon that belt surface non-uniform temperature, in addition to having knot because of inside heating channel
It is bigger with the structural relation of template outside burnt clogged with soot.In template there are two be granulated with it is adjacent and can be granulated belt edge
The region of heat exchange is generated, first is that the surface that the inner ring with inner circle inboard is contacted with cooling water is granulated, second is that being granulated outside band outer circle
The surface that the outer ring of side is contacted with cooling water.
Since the outer ring and endocyclic area of template surface are under the action of cooling water, thermal loss, the then drop of this part
Temperature area, then to inboard heat exchange, making to be granulated the die hole wall temperature in belt edge close to the region is reduced, and is formed and is granulated inside and outside band
Lip temperature is low, intermediate high temperature field, the phenomenon for causing discharging uneven.
So far, solve the problems, such as that this technology has the surface design arrangement polytetrafluoroethylene (PTFE) guarantor in inner ring and outer rings
The combination of warm thermal insulation board and gasket and outer cover plate, the background such as US9481121B2 of this pelletizing template heat-insulation and heat-preservation,
Described in patent disclosed in CN201566065U.
These measures play certain effect, but the outer cover plate of the prior art is the cover board of solid metal material, Bu Neng
This position effectively obstructs heat transfer, and when having higher thermal requirements to template surface, the effect of solid metal cover board is just not
It is fairly obvious.
Therefore, the heat exchange that inner ring and outer rings region is granulated belt edge to template is reduced, reduces and is granulated belt edge and centre
The temperature difference at position is this field problem to be solved.
Summary of the invention
It is an object of the invention to propose a kind of pelletizing template vacuum heat-insulation cover board, which, which is arranged in, is made
The inner ring and outer rings surface of grain template, can reduce the conduction, convection current and radiation of these position heats, make the thermal insulation separation at these positions
Hot property improves, and reduces inner ring and outer rings region generated temperature drop under the action of cooling water and transmits to template granulation belt edge
Speed, keep template be granulated belt edge it is consistent with the temperature at center, improve pelletizing quality.
A kind of pelletizing template vacuum heat-insulation cover board proposed by the present invention, comprising: lower cover plate 1, intermediate supports Turbogrid plates 2,
Upper cover plate 3, high temperature resistant heat insulation coating 4, the propping bar panel 2 are placed in lower cover plate 1 and upper cover plate) between, lower cover plate 1 and upper cover
The enclosure space that plate 3 and intermediate grid plate 2 surround is vacuum chamber, and high temperature resistant heat insulation coating 4 is applied to the outside of lower cover plate 1.
A kind of pelletizing template vacuum heat-insulation cover board proposed by the present invention, the interior outer rim branch of the intermediate supports Turbogrid plates 2
Support ring 5 and support dowel 7 are connect with the annular brace node 6 of screw mounting hole.
A kind of pelletizing template vacuum heat-insulation cover board proposed by the present invention, the interior outer rim branch of the intermediate supports Turbogrid plates 2
The body region of cover board is separated into several not connected individual cavities with support dowel 7 by support ring 5.
A kind of pelletizing template vacuum heat-insulation cover board proposed by the present invention, the lower cover plate 1 and upper cover plate 3 and intermediate supports
The position of the screw mounting hole of Turbogrid plates 2 is identical with quantity.
A kind of pelletizing template vacuum heat-insulation cover board proposed by the present invention, the outside of the lower cover plate 1 be coated with high temperature resistant every
Hot coating 4.
The present invention compared with prior art the advantages of:
1 lower cover plate of the invention, intermediate supports Turbogrid plates, upper cover plate, high temperature resistant heat insulation coating change original solid cover-plate
Into the cover board to have vacuum heat-preserving chamber and antiradiation coating.
2 are suitable for the upgrading of old heat-preserving cover plate, are also applied for the design of new heat-preserving cover plate.
3 new vacuum heat-insulation cover plate combination designs can also be real using omit inner layer polytetrafluoroethylene (PTFE) insulation board second
Example is applied, spare part is reduced.
Detailed description of the invention
Fig. 1 is a kind of structure chart of pelletizing template vacuum heat-insulation cover board proposed by the invention, in which: lower cover plate 1,
Intermediate supports Turbogrid plates 2, upper cover plate 3, high temperature resistant heat insulation coating 4, interior outer rim bracing ring 5, annular brace node 6, support connection
Muscle 7.
Fig. 2 is that the present invention is applied in pelletizing template outer ring C and inner ring D position view.
Fig. 3 is the second embodiment of the present invention.
Fig. 4 is the structure axonometric drawing after upper cover plate partly cut-away of the present invention.
Specific embodiment
Below with reference to the accompanying drawings, wherein attached drawing be merely to illustrate it is of the invention preferably and alternate embodiment, rather than in order to limit
The purpose of the present invention processed.
Specific embodiment combination Fig. 1, Fig. 2, Fig. 3, Fig. 4 further illustrates the first embodiment of the present invention:
Lower cover plate 1, intermediate supports Turbogrid plates 2, upper cover plate 3 are using laser cutting molding.
By lower cover plate 1 and intermediate supports Turbogrid plates 2 and 3 outer circle of upper cover plate to just, and all screw mounting holes are being also to just,
It is in each interlayer intermediate plate shape solder bonding metal solder, lower cover plate 1 and intermediate supports Turbogrid plates 2 and upper cover plate 3 is fixed, in vacuum brazing
Furnace brazing welding, after soldering, by lower cover plate 1 and intermediate supports Turbogrid plates 2 interior outer rim bracing ring 5 and support dowel 7 and
The cavity that upper cover plate 3 is enclosed forms several independent vacuum chambers.
The solder flowed out after cleaning soldering, shaping, reaming screw mounting hole, by the surface sand-blasting of lower cover plate, cleaning, spraying
High temperature resistant heat insulation coating 4.
It is that the present invention is mounted on pelletizing template outer ring C and inner ring D position view shown in Fig. 2, illustrates visible lower cover plate 1
It is sprayed outside several the independent vacuum chambers and lower cover plate formed with the cavity that intermediate supports Turbogrid plates 2 and upper cover plate 3 are surrounded
It is outside to obstruct heat transfer and damp internal outside inside template in the installation site of diagram for the high temperature resistant heat insulation coating 4 of painting
Heat radiation.
It is that the organization plan of second embodiment of the invention saves when this embodiment is mounted on former sealing position shown in Fig. 3
Thermal insulation thermal insulation board is omited, remaining is identical with the first embodiment.
First embodiment can use in the transformation of old pelletizing template heat-preserving cover plate replacement, for improving pelletizing template
The protection heat insulation of outer ring C and the position inner ring D reduce the temperature difference that pelletizing template is granulated belt surface outer rim and centre,
The consistency of discharging is improved, pelletizing quality is improved.
Thermal insulation separation heat pad inside second embodiment omission, reduces a spare part, can be used for old template transformation,
It can be used for new template design.
Claims (5)
1. a kind of pelletizing template vacuum heat-insulation cover board, including lower cover plate (1), intermediate supports Turbogrid plates (2), upper cover plate (3) are resistance to
High temperature thermal insulation coating (4), it is characterised in that propping bar panel (2) is placed between lower cover plate (1) and upper cover plate (3), lower cover plate (1)
The enclosure space surrounded with upper cover plate (3) and intermediate grid plate (2) is vacuum chamber, and high temperature resistant heat insulation coating (4) is applied to lower cover plate
(1) outside.
2. a kind of pelletizing template vacuum heat-insulation cover board according to claim 1, it is characterised in that intermediate supports Turbogrid plates
(2) interior outer rim bracing ring (5) and support dowel (7) connect with the annular brace node (6) of screw mounting hole.
3. a kind of pelletizing template vacuum heat-insulation cover board according to claim 1, it is characterised in that intermediate supports Turbogrid plates
(2) body region of cover board is separated into several not connected independent skies with support dowel (7) by interior outer rim bracing ring (5)
Chamber.
4. a kind of pelletizing template vacuum heat-insulation cover board according to claim 1, it is characterised in that lower cover plate (1) and upper cover
Plate (3) is identical as the position of the screw mounting hole of intermediate supports Turbogrid plates (2) and quantity.
5. a kind of pelletizing template vacuum heat-insulation cover board according to claim 1, it is characterised in that the outside of lower cover plate (1)
It is coated with high temperature resistant heat insulation coating (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121148.9A CN110202771A (en) | 2018-02-07 | 2018-02-07 | A kind of pelletizing template vacuum heat-insulation cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121148.9A CN110202771A (en) | 2018-02-07 | 2018-02-07 | A kind of pelletizing template vacuum heat-insulation cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110202771A true CN110202771A (en) | 2019-09-06 |
Family
ID=67778562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810121148.9A Pending CN110202771A (en) | 2018-02-07 | 2018-02-07 | A kind of pelletizing template vacuum heat-insulation cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7534927B2 (en) | 2020-11-11 | 2024-08-15 | 株式会社日本製鋼所 | Die plate cover, die head, extruder, and resin pellet manufacturing method |
-
2018
- 2018-02-07 CN CN201810121148.9A patent/CN110202771A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7534927B2 (en) | 2020-11-11 | 2024-08-15 | 株式会社日本製鋼所 | Die plate cover, die head, extruder, and resin pellet manufacturing method |
| EP4227056A4 (en) * | 2020-11-11 | 2024-10-23 | Japan Steel Works Ltd | Die plate cover, die head, extruder, and method for manufacturing resin pellet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190906 |