CN109878057A - A kind of melt pipe heating device - Google Patents
A kind of melt pipe heating device Download PDFInfo
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- CN109878057A CN109878057A CN201910164655.5A CN201910164655A CN109878057A CN 109878057 A CN109878057 A CN 109878057A CN 201910164655 A CN201910164655 A CN 201910164655A CN 109878057 A CN109878057 A CN 109878057A
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- Prior art keywords
- melt pipe
- alloy sheath
- wall
- alloy
- melt
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 105
- 239000000956 alloy Substances 0.000 claims abstract description 105
- 239000011229 interlayer Substances 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 25
- 239000000155 melt Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 14
- 238000004321 preservation Methods 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 6
- 239000002985 plastic film Substances 0.000 abstract description 3
- 229920006255 plastic film Polymers 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 239000012943 hotmelt Substances 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention provides a kind of melt pipe heating device, is related to plastic film production technical field, including melt pipe, alloy sheath, electric calorifie installation and attemperator；The alloy sheath is sleeved on melt pipe outer wall, and is provided between alloy sheath and melt pipe outer wall and transmits closed air interlayer for uniform heat；The electric calorifie installation part is arranged inside alloy sheath, generates heat for heating；The attemperator is arranged outside alloy sheath, for reducing the thermal loss of electric calorifie installation；The present invention is heated evenly melt pipe by thermally conductive uniformity, the mobility of air by the design air interlayer between melt pipe and alloy sheath, guarantees that the melt in melt pipe is heated evenly, is not pyrolyzed.
Description
Technical field
The present invention relates to plastic product production technical fields, and in particular to a kind of melt pipe heating device.
Background technique
In the production process of plastic film, by extrusion system after conveying, mixing and metering, melt pipe connects material
The components such as then each component devices of extrusion system, including extruder, blowdown valve, metering pump, fondant filter and die head, to guarantee
Material after melting can quickly be passed through melt pipe with normal flow and enter next process, must be installed and be added outside melt pipe
Thermal is heated to obtain required temperature, in addition also needs installation attemperator to prevent heat rapidly losing.Melt pipe
Heating method have resistance heating, oil heating, special steam heating, heating method generally according to properties of product, environmental requirement and
Cost of investment is determined.
Oily heating method can guarantee melt pipe have good temperature uniformity, but be not easy to melt pipe assembly and disassembly,
Cleaning is easy oil leak, environment easy to pollute, in some instances it may even be possible to fire occur using interface long afterwards.Special steam heating is also not susceptible to
The dismounting of pipeline, steam are easily revealed dangerous.Resistance heating manner due to its it is easy to use, free from environmental pollution, easily controllable and
Using more.
Such as in the prior art, a kind of preheating and Anti-solidification use of high-temperature molten salt transmission pipeline disclosed in CN106131986A
Electric heater unit；The preheating of high-temperature molten salt transmission pipeline and Anti-solidification electric heater unit include being wound in high-temperature molten salt transfer tube
Electric heating tube on pipeline outer wall along high-temperature molten salt transmission pipeline parallel lay-up and is tightly attached to below high-temperature molten salt transmission pipeline
Electric heating tube, electric heating tube are by sequentially passing through multiple insulating fixing pieces and the outer high temperature nichrome electricity for being cased with high temperature fiber set
Resistance silk is made, and structure is simple, and Anti-solidification effect is good；A kind of for another example agricultural film raw material hot melt disclosed in patent CN207931105U
Device, including device noumenon and hot melt room, hot melt room are located inside device noumenon, and there are rotary shaft, rotary shaft table in hot melt room bottom end
Face is equipped with workbench, is equipped with insulating layer inside workbench；It heats ceiling end and is equipped with the ultraviolet germicidal lamp, heat room side table
Face is equipped with the temperature sensor, and the hot melt room other side is equipped with scavenger fan, and hot melt chamber interior is enclosed with heating layer, heats under room
Side is equipped with pedestal, and seat interior side is equipped with rotating electric machine, and the chassis interior other side is equipped with heating motor, heats motor and heating layer
It is electrically connected, also belongs to Electric heating, structure is simple.
The prior art mainly adopts resistance/Electric heatings, realize flash heat transfer；Currently, film in film production field
Stretching the melt pipe electric heater unit on production line is that resistance wire is cast heating device inner wall and melt pipe in aluminium alloy
Outer wall Direct Contact Heating, heat conduction velocity than very fast, due to resistance wire control can not accomplish it is fine and closely woven uniformly, lead to melt pipe
The difference of the inner melt different parts temperature difference is larger, and melt temperature is uneven, and temperature is too high to make melt generate thermal degradation, influences into
Film quality.
Summary of the invention
It is an object of that present invention to provide a kind of melt pipe heating device, which can effectively solve to produce in plastics
Melt pipe uneven heating leads to the temperature unevenness of melt when product produce, and influences subsequent quality of forming film.
To reach above-mentioned purpose, the following technical solutions are proposed: a kind of melt pipe heating device, including melt pipe by the present invention
Road, alloy sheath, electric calorifie installation and attemperator；Alloy sheath generallys use aluminium cast alloy set；
The alloy sheath is sleeved on melt pipe outer wall, and is provided between alloy sheath and melt pipe outer wall for uniform
Heat transmits closed air interlayer；The electric calorifie installation part is arranged inside alloy sheath, generates heat for heating；The guarantor
Warm device is arranged outside alloy sheath, including thermal insulation packing layer and is set in outside thermal insulation packing layer, for fixed heat preservation filling
The insulation cover of layer；Attemperator is used to reduce the thermal loss of electric calorifie installation.
Further, the alloy sheath is two halves arcuated alloy splicing composition, and the arcuated alloy is cut in its length direction
Face is semicircle；Or the alloy sheath includes two, is set in the outer wall of melt pipe, outside alloy sheath interior wall construction and melt pipe
Wall construction adaptation；The different designs of alloy sheath mainly consider that alloy sheath installation and processing complexity, above two design have
Conducive to the installation of alloy sheath, difficulty of processing is reduced.
Further, alloy sheath both ends open edge in the border of melt pipe is respectively arranged with boss, described
End abutment melt pipe outer wall of the boss far from alloy sheath；It is used between the boss, melt pipe outer wall and alloy sheath inner wall
In the air interlayer that formation is closed；The end that the boss abuts melt pipe is set as to the curved arc knot in alloy sheath direction
Structure, the arcuate structure are adapted to melt pipe outer wall；Boss is designed in alloy sheath end, and is arranged to and melt pipe in end
The arcuate structure of road cylindrical outer wall cambered surface adaptation is conducive to constitute closed air interlayer, and structure is simple, is easily worked.
Further, the melt pipe is I-shaped structure, institute along the section of melt pipe axis in its length direction
It states air interlayer to arrange along I-shaped structure outer wall, and air interlayer is in the height phase everywhere in vertical melt pipe outer wall direction
Deng height of the air interlayer in vertical melt pipe outer wall direction is denoted as H, 3mm≤H≤8mm；The air interlayer of high unity has
Conducive to uniform temperature is formed in melt pipe outer wall, guarantee that melt pipe inner melt is heated evenly.
Further, the electric calorifie installation includes power supply, resistance wire, metal tube, temperature element and temperature indicating device；Institute
It states power supply and temperature indicating device is arranged outside melt pipe heating device；The metal tube is evenly arranged in alloy sheath
Portion, and the both ends of metal tube are successively piercing in alloy sheath and attemperator；The resistance wire is pierced by through inside metal tube
In metal tube both ends, and resistance wire is connected to power supply, and dielectric is provided between resistance wire and metal tube；The temperature element
One end is connected to air interlayer, and the other end sequentially passes through alloy sheath and attemperator is connected to temperature indicating device；Heating device adds
Hot part is arranged in alloy sheath, provides heat to alloy sheath, then transfer heat to air interlayer, air interlayer molecule is violent
Movement is so that the temperature of the melt pipe outer wall wrapped up is uniform.
Further, the thermal insulation packing layer is set as heat-preservation cotton, and insulation cover is set as stainless steel cage, stainless steel cage again with
Alloy sheath outer wall riveting, so that thermal insulation packing layer is closely filled in outside alloy sheath between stainless steel cage.
Further, the relatively-stationary plane of two halves arcuated alloy is correspondingly arranged on assembly hole, and the assembly hole is adopted
It is fixed with bolt and nut.
From the above technical scheme, the melt pipe heating device that technical solution of the present invention provides obtains to be had as follows
Beneficial effect:
Melt pipe heating device disclosed by the invention, including melt pipe, alloy sheath, electric calorifie installation and attemperator；
Alloy sheath is sleeved on melt pipe outer wall, formed between melt pipe outer wall it is closed, in vertical melt pipe outer wall direction
Height equal air interlayer everywhere；Electric calorifie installation part is arranged inside alloy sheath, generates heat for heating；Attemperator
It is arranged outside alloy sheath, for reducing the thermal loss of electric calorifie installation；The present invention passes through to electric calorifie installation electrified regulation, heat
It is transferred on alloy sheath, then the air interlayer wrapped up outside alloy sheath melt heating pipeline passes through hot air melt pipe again
Road, and then melt heating.
When alloy sheath heating air interlayer, due to the height of air interlayer is equal everywhere and air in molecule in height
Wen Xia strenuous exercise, the hot air temperature in air interlayer are rapidly achieved uniformly, melt pipe are effectively ensured and is heated evenly, and eliminate
Because resistance wire can not gather generate interval cause influence of the alloy sheath non-uniform temperature to melt in melt pipe；Pass through sky
Thermally conductive uniformity, the mobility of gas, are heated evenly melt pipe, guarantee identical temperature, are further ensured that in melt pipe
Melt be heated evenly, be not pyrolyzed.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of subject matter disclosed by the invention in the case that the design of sample is not conflicting.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that the foregoing and other aspects, reality
Apply example and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the invention will be below
Description in it is obvious, or learnt in practice by the specific embodiment instructed according to the present invention.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, example will be passed through and the embodiments of various aspects of the invention is described in reference to the drawings, in which:
Fig. 1 is the sectional view of melt pipe heating device；
Fig. 2 is the concrete structure diagram of melt pipe heating device；
Fig. 3 is melt pipe heating device internal resistance silk wiring diagram.
Wherein, the specific meaning of each component are as follows:
1- melt pipe, 2- alloy sheath, 3- electric calorifie installation, 4- attemperator, 5- air interlayer, 6- boss, 3.1- metal
Pipe, 3.2- resistance wire, 3.3- temperature element, 4.1- thermal insulation packing layer, 4.2- insulation cover, 7- melt.
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the present disclosure, shown in the drawings of the implementation of many explanations
Example.Embodiment disclosed by the invention does not define comprising all aspects of the invention.It should be appreciated that a variety of designs presented hereinbefore and
Embodiment, and those of describe in more detail below design and embodiment can in many ways in any one come it is real
It applies, this is because conception and embodiment disclosed in this invention are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined use with disclosed by the invention.
Based in the prior art, melt heating mostly uses electrothermal method in melt pipe, realizes flash heat transfer, but due to
Resistance wire 3.2 can not accomplish fine and closely woven uniform arrangement in compo pipe 2, so that the difference of the 1 different zones temperature difference of melt pipe is larger,
Lead to 7 non-uniform temperature of pipeline inner melt, influences subsequent quality of forming film, therefore the present invention is directed to propose a kind of melt pipe adds
Thermal, the heating device structure is simple, 1 outer wall of melt pipe be arranged air interlayer 5, using the thermally conductive uniformity of air,
Mobility is heated evenly the melt 7 in melt pipe 1.
With reference to the accompanying drawing with embodiment shown in the drawings, a kind of melt pipe heating device of the invention is made further
It is specific to introduce.
In conjunction with Fig. 1, a kind of melt pipe heating device, including melt pipe 1, alloy sheath 2, electric calorifie installation 3 and heat preservation dress
Set 4；The alloy sheath 2 is sleeved on 1 outer wall of melt pipe, and is provided between 1 outer wall of alloy sheath 2 and melt pipe for uniform
Heat transmits closed air interlayer 5；3 part of electric calorifie installation is arranged inside alloy sheath 2, generates heat for heating；Institute
It states attemperator 4 to be arranged outside alloy sheath 2, including thermal insulation packing layer 4.1 and is set in outside thermal insulation packing layer 4.1, is used for
The insulation cover 4.2 of fixed thermal insulation packing layer 4.1；Attemperator 4 is used to reduce the thermal loss of electric calorifie installation 3.The present invention discloses
Melt pipe heating device, effectively solving melt pipe uneven heating in plastic product manufacturing line in the prior art causes to melt
The problem of temperature unevenness of body, such as apply on plastic film production lines.
In actual production, alloy sheath 2 generallys use aluminium cast alloy set, can also select alloy sheath made of other materials,
It is determined by needs of production；Cast aluminium alloy set is general cylindrical, may be alternatively configured square tube or other shapes, is set in melt pipe
1 outer wall of road；In its both ends open, the edge in the border of melt pipe 1 is respectively arranged with boss 6 to the alloy sheath 2, and boss 6 is remote
1 outer wall of end abutment melt pipe from alloy sheath 2；Sky between 2 inner wall of the boss 6,1 outer wall of melt pipe and alloy sheath
Cavity segment forms closed air interlayer 5.
In conjunction with specific embodiments of the present invention, the end that the boss 6 abuts melt pipe 1 is set as to 2 side of alloy sheath
To curved arcuate structure, the arcuate structure is adapted to 1 outer wall of melt pipe, i.e., with the cylindrical outer wall cambered surface of melt pipe 1
Sealing effect is reinforced in matching；The melt pipe 1 is I-shaped structure along the section of 1 axis of melt pipe in its length direction,
The air interlayer 5 is arranged along I-shaped structure outer wall, and air interlayer 5 is in the height in vertical 1 outer wall direction of melt pipe
Equal everywhere, defining height of the air interlayer 5 in vertical 1 outer wall direction of melt pipe is H, 3mm≤H≤8mm, the air of formation
The height of interlayer 5 can be evenly heated melt pipe 1 between 3mm~8mm；The air interlayer 5 of high unity is conducive to
1 outer wall of melt pipe forms uniform temperature, guarantees that 1 inner melt of melt pipe is heated evenly.
In the specific implementation process, the height of air interlayer 5, by adjusting the height of boss 6 according to actual production demand
Setting, the application are not specifically limited；And air interlayer 5 is too thin to will affect temperature uniformity, too thick, will affect heat transfer
Effect, effect is best when boss 6 highly selects 5mm in embodiment shown in the drawings.In section Example, in order to easy to process,
Boss 6 is arranged in alloy sheath length direction both ends, is directly sleeved on melt pipe 1, but due to the specific knot of melt pipe 1
The height of structure, air interlayer 5 cannot be equal everywhere, leads to can have certain influence to flow uniformity in melt pipe 1 when heating.
In conjunction with shown in Fig. 2 and Fig. 3, the electric calorifie installation 3 includes power supply, metal tube 3.1, resistance wire 3.2, temperature element
3.3 and temperature indicating device；The power supply and temperature indicating device are arranged outside melt pipe heating device；The metal tube
3.1 are evenly arranged in inside alloy sheath 2, and the both ends of metal tube 3.1 are successively piercing in alloy sheath 2 and attemperator 4；It is described
Resistance wire 3.2 is piercing in 3.1 both ends of metal tube, and resistance wire 3.2 is connected to power supply, resistance wire through inside metal tube 3.1
Dielectric is provided between 3.2 and metal tube 3.1；Described 3.3 one end of temperature element is connected to air interlayer 5, and the other end is successively
Temperature indicating device is connected to through alloy sheath 2 and attemperator 4.Thermal insulation packing layer 4.1 described in the embodiment of the present application is usual
It is set as heat-preservation cotton, it can also be using other inorganic heat preservation packing materials and organic insulation material；Insulation cover 4.2 is set as not
Become rusty steel cage, and for the ease of the maintenance and replacement of heating device, and stainless steel cage by the way of riveting using being connected to and alloy herein
2 outer walls are covered, can also be directly fixed by the way of welding, reduce the loss of heat.
In some embodiments, for the processing and installation convenient for alloy sheath 2, alloy sheath 2 is split into two halves in its length by when manufacture
The arcuated alloy that direction section is semicircle is spent, two halves arcuated alloy is spliced to form the alloy sheath 2 of complete cylindrical shape；Other are implemented
In example, since melt pipe 1 is longer, alloy sheath 2 is arranged to two primary alloy sets, when manufacture, each primary alloy set 2 was divided into two
Half is the arcuated alloy of semicircle in its length direction section, and when installation is successively arranged the outside for being fixed on melt pipe 1,
Boss 6, end abutment melt pipe of the boss 6 far from alloy sheath 2 are set along same border in the both ends open of medium and small alloy sheath
1, form air interlayer 5.In attached embodiment shown in FIG. 1, primary alloy set is first spliced to form using two halves arcuated alloy, then by small
The fixed Integral alloy set 2 for constituting package melt pipe 1 of alloy sheath splicing, and in the relatively-stationary plane of two halves arcuated alloy
Assembly hole is opened up with the relatively fixed end face of primary alloy set of composition, the assembly hole is fixed using bolt and nut, specific implementation
In the process, gusset also is set in two halves arcuated alloy relatively-stationary plane junction, guarantees the fixation of junction and to heat preservation
The sealing of filled layer 4.1.In section Example, using directly two halves arcuated alloy is fixed together with insulation cover 4.2 respectively,
Splicing correspondence position welds or rivets tension handle on insulation cover 4.2 again, is closed by way of tensing handle buckle
The dismounting and fixation of gold set 2 and insulation cover 4.2.The present invention does not limit the connection type of two halves arcuated alloy, arbitrarily makes two halves arc
The connection type that shape alloy split forms alloy sheath 2 is within the scope of the invention.
In further embodiments, since melt pipe 1 is too long, in order to allow the easy for installation of alloy sheath 2, by alloy sheath 2
It is arranged and is spliced to form by 2 or more primary alloy sets.
Of the invention realizes that the principle of melt thermally equivalent is by air interlayer 5,3.2 electrified regulation of resistance wire, heat
Amount is transferred on alloy sheath 2 through metal tube 3.1, the air interlayer 5 that 2 heating of cast aluminium alloy set is formed with 1 outer wall of melt pipe, empty
Air heats in air casing 5, then the melt 7 by being flowed in 1 indirect heating melt pipe 1 of hot air melt pipe,
Due to molecule strenuous exercise at high temperature in air, there is thermally conductive uniformity, mobility, therefore hot air temperature is uniform, realizes
1 inner melt 7 of melt pipe is evenly heated；The present invention effectively solves the generation interval that can not gather because of resistance wire, causes cast aluminium
The problem of alloy sheath non-uniform temperature, guarantees material melt characteristic, and then guarantees quality of forming film.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of melt pipe heating device, including melt pipe, alloy sheath, electric calorifie installation and attemperator, which is characterized in that
It further include air interlayer；
The alloy sheath is sleeved on melt pipe outer wall, and the air interlayer is arranged between alloy sheath and melt pipe outer wall；
The electric calorifie installation part is arranged inside alloy sheath；The attemperator is arranged outside alloy sheath, including thermal insulation packing layer
Be set in outside thermal insulation packing layer, the insulation cover for fixing thermal insulation packing layer.
2. melt pipe heating device according to claim 1, which is characterized in that the alloy sheath both ends open is close to molten
Edge is respectively arranged with boss, end abutment melt pipe outer wall of the boss far from alloy sheath in the border of body pipeline；It is described
Closed air interlayer is formed between boss, melt pipe outer wall and alloy sheath inner wall.
3. melt pipe heating device according to claim 1, which is characterized in that the alloy sheath is two halves arcuated alloy
Splicing composition, the arcuated alloy are semicircle in its length direction section.
4. melt pipe heating device according to claim 1, which is characterized in that the alloy sheath includes two, suit
In the outer wall of melt pipe.
5. melt pipe heating device according to claim 2, which is characterized in that the boss abuts the end of melt pipe
Portion is set as to the curved arcuate structure in alloy sheath direction, and the arcuate structure is adapted to melt pipe outer wall.
6. melt pipe heating device according to claim 5, which is characterized in that the melt pipe is set as growing at it
Spending direction along the section of melt pipe axis is I-shaped structure, and the air interlayer is arranged along I-shaped structure outer wall, and empty
Air casing is equal everywhere in the height perpendicular to melt pipe outer wall direction.
7. melt pipe heating device according to claim 1, which is characterized in that the electric calorifie installation includes power supply, electricity
Hinder silk, metal tube, temperature element and temperature indicating device；
The power supply and temperature indicating device are arranged outside melt pipe heating device；
The metal tube is evenly arranged in inside alloy sheath, and the both ends of metal tube are successively piercing in alloy sheath and heat preservation dress
It sets；The resistance wire is through inside metal tube, being piercing in metal tube both ends, and resistance wire is connected to power supply, resistance wire and gold
Belong to and is provided with dielectric between pipe；Described temperature element one end is connected to air interlayer, and the other end sequentially passes through alloy sheath and guarantor
Warm device is connected to temperature indicating device.
8. melt pipe heating device according to claim 1, which is characterized in that the thermal insulation packing layer is set as keeping the temperature
Cotton, insulation cover is set as stainless steel cage, and insulation cover and alloy sheath outer wall rivet.
9. melt pipe heating device according to claim 6, which is characterized in that define the air interlayer perpendicular to
The height in melt pipe outer wall direction is H, 3mm≤H≤8mm.
10. melt pipe heating device according to claim 3, which is characterized in that the two halves arcuated alloy is relatively solid
Fixed plane is correspondingly arranged on assembly hole, and the assembly hole is fixed using bolt and nut.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910164655.5A CN109878057A (en) | 2019-03-05 | 2019-03-05 | A kind of melt pipe heating device |
| PCT/CN2019/085004 WO2020177207A1 (en) | 2019-03-05 | 2019-04-29 | Melt pipeline heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910164655.5A CN109878057A (en) | 2019-03-05 | 2019-03-05 | A kind of melt pipe heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109878057A true CN109878057A (en) | 2019-06-14 |
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ID=66930795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910164655.5A Pending CN109878057A (en) | 2019-03-05 | 2019-03-05 | A kind of melt pipe heating device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109878057A (en) |
| WO (1) | WO2020177207A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978393A (en) * | 2019-12-17 | 2020-04-10 | 徐福全 | Injection mold for injection molding machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020177207A1 (en) | 2020-09-10 |
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