CN106985314A - A kind of vane cooling system and its operating method - Google Patents
A kind of vane cooling system and its operating method Download PDFInfo
- Publication number
- CN106985314A CN106985314A CN201710176771.XA CN201710176771A CN106985314A CN 106985314 A CN106985314 A CN 106985314A CN 201710176771 A CN201710176771 A CN 201710176771A CN 106985314 A CN106985314 A CN 106985314A
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- CN
- China
- Prior art keywords
- vane
- blower fan
- film
- cold
- kuppe
- Prior art date
- 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
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1658—Cooling using gas
- B29C2035/1666—Cooling using gas dried air
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a kind of vane cooling system and its operating method, including cold tower, Calibrating cage, inflation film and the second blower fan in the first blower fan, vane, IBC, first blower fan, vane, cold tower, Calibrating cage, inflation film, the second blower fan are sequentially connected in IBC, the edge of the Calibrating cage is provided with above kuppe, the kuppe and is provided with drainage blower fan.The present invention increases the amount of cold air, and avoids the waste of cold, reaches the effect of energy-saving and emission-reduction.
Description
Technical field
The present invention relates to vane system, specifically, it is related to a kind of vane cooling system and its operating method.
Background technology
The cooling of plasticized melt is concentrated mainly in inflation section, is cooled down, shaped.The cooling and shaping process of inflation section will
The crystal habit of film is directly influenced, so as to influence the physical and mechanical properties of film, such as：Tensile modulus of elasticity, stretching is strong
Degree, yield strength etc., the improvement of cooling condition, it will largely improve tensile break stress, specific elongation degree of film etc.
Performance.The cooling velocity of film is slower, and line of solidification is higher, for ldpe film, and sufficient movement is extended film by molecule segment
Time in molten condition, be easily pulled with the unbalanced distinguished and admirable influence of vane cold wind and tremble, cause film concavo-convex
Injustice, and for LLDPE films, then big spherocrystal can be produced, so that the mist degree increase of film, glossiness reduction, influence thin
The outward appearance of film.And there is also the defect in terms of some processing for raw materials for production metallocene PE：(1) melt index is low, stream
Dynamic property is poor.Viscosity is poor for shear rate sensitiveness.(2) viscosity is high.Metallocene is processed in conventional LLDPE film lines
During polyethylene, the extrusion moment of torsion rise of screw rod, the electric current increase of motor, energy consumption is typically higher by 5%-15%.(3) cooling velocity
Slowly, thin film stability is poor.MPE melt index is low, and narrow molecular weight distribution, density is low, therefore crystallisation by cooling speed is slow, film into
The type time.Equal cooling air quantity, the line of solidification of mPE films is high, and the stability of film bubble is poor, and equipment capacity is low.Therefore film
Heat transfer, the i.e. cooling effect of vane system eventually influence the production capacity of equipment and the final performance of film.
The cooling velocity of vane, largely, the air output of the cold wind air quantity, i.e. vane that are flowed depending on vane.
The vane cooling system of the current three-layer co-extruded blown film units of A Erbeina, when cold air is with film contacts, due to inflation film
Contact area it is limited, so cold air fails efficient utilization, be directly discharged into air, fail to make full use of its cold, cause to set
Standby energy consumption is big, while being unfavorable for improving the production capacity of blown film unit equipment；It is and thin after another aspect cooling air is blown out through vane
Film carries out heat transfer, and air is directly discharged into afterwards, does not meet the environmental requirement of current " energy-saving and emission-reduction ".
The content of the invention
It is an object of the invention to the defect for overcoming above-mentioned technology presence, there is provided a kind of vane cooling system and its operation side
Method, reaches the effect of energy-saving and emission-reduction.
Its concrete technical scheme is：
Cold tower 3, Calibrating cage 4, inflation film 5 and in a kind of vane cooling system, including the first blower fan 1, vane 2, IBC
Two blower fans 8, first blower fan 1, vane 2, cold tower 3, Calibrating cage 4, the blower fan 8 of inflation film 5 second are sequentially connected in IBC, institute
The edge for stating Calibrating cage 4 is provided with kuppe 6, and the top of kuppe 6 is provided with drainage blower fan 7.
Further, the kuppe 6 is provided with uniform pore openings.
A kind of operating method of vane cooling system, comprises the following steps：After melt flow stream is extruded via die orifice, in traction
Moved longitudinally upward under the stretching action of power, while the cold wind of 12 DEG C of the output of cooling tower 3 is cooled down to it in vane 2 and IBC；
12 DEG C of cold wind that vane 2 is blown out, temperature reaches 15 DEG C after being conducted heat with film；15 DEG C of cold wind under the protection of kuppe,
It is recycled to via drainage blower fan 7 at the import of vane 2, after being mixed with 12 DEG C of air cooling mechanism cold of cold wind, is delivered to vane 2
Film is cooled down again with cooling tower in IBC 3.
Compared with prior art, beneficial effects of the present invention：
1. the present invention sets up the kuppe of a uniform pore openings at the edge of Calibrating cage, the diffusion of vane cold wind is prevented, plus
Strong cooling effect, while receiving influence of the air of external environment to blowing film bubble.
2. the present invention installs a drainage blower fan in the top of kuppe, the cold air blown out by vane is collected, is recycled to
Vane says mouth, recycles its cold.
Brief description of the drawings
Fig. 1 is the structural representation of vane cooling system of the present invention；
Fig. 2 is the x-r curve maps of film bubble before and after embodiment technological transformation, wherein, x1：The x-r curves not undergone technological transformation；
x2：The x-r curves undergone technological transformation.
Embodiment
Technical scheme is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, cold tower 3, Calibrating cage 4 in a kind of vane cooling system, including the first blower fan 1, vane 2, IBC, blowing
Mould the blower fan 8 of film 5 and second, first blower fan 1, vane 2, cold tower 3, Calibrating cage 4, the blower fan 8 of inflation film 5 second in IBC
It is sequentially connected, the edge of the Calibrating cage 4 is provided with kuppe 6, and the top of kuppe 6 is provided with drainage blower fan 7.
Further, the kuppe 6 is provided with uniform pore openings.
A kind of operating method of vane cooling system, comprises the following steps：After melt flow stream is extruded via die orifice, in traction
Moved longitudinally upward under the stretching action of power, while the cold wind of 12 DEG C of the output of cooling tower 3 is cooled down to it in vane 2 and IBC；
12 DEG C of cold wind that vane 2 is blown out, temperature reaches 15 DEG C after being conducted heat with film；15 DEG C of cold wind under the protection of kuppe,
It is recycled to via drainage blower fan 7 at the import of vane 2, after being mixed with 12 DEG C of air cooling mechanism cold of cold wind, is delivered to vane 2
Film is cooled down again with cooling tower in IBC 3.
12 DEG C of the cold wind blown out by vane 2, under the protection of kuppe 6, reduces the diffusion to environment, can
Fully and film contacts, diabatic process is enhanced significantly；On the other hand, 15 DEG C of cold wind after heat transfer, via drainage blower fan 7, is returned
It is sent at the import of vane 2, the air with 12 DEG C in air cooler is mixed, is delivered to the cooling that vane carries out film, increases
The amount of cold air, and avoid the waste of cold.
In order to prove the beneficial effect of technical solution of the present invention, tested as follows.
Embodiment
Experimental facilities：
1st, the three-layer co-extruded blown film units of Germany A Erbeina；
2nd, Shenzhen Kai Pute Electronics Co., Ltd.s cp-3007 hand-helds measuring scale laser designation ultrasonic range finder.If
Standby measurement range：0.1-18m, accuracy：0.005m.
Experimental raw：
LLDPE 2045G
The place of production：Dow Chemical Co., Ltd (Thailand)
Low density polyethylene (LDPE) FB2230
The place of production：Northern Europe Borouge chemical company (United Arab Emirates)
Test factory formula：
Table 1 tests factory formula
Tab.1The recipe of FFS blown film experiment
Experimentation：
1st, two Germany's A Erbeina blown film units of certain factory are chosen, wherein one is undergone technological transformation.
2nd, respectively at mensuration distance die head different height, the real radius of film bubble, and record.
Analysis of experimental results is with discussing：
The radius change curve of two blown film units is made, and is put it into the same coordinate system.
It can be obtained from Fig. 2, the film bubble undergone technological transformation and the film bubble not undergone technological transformation, film bubble radius is with vertical
Essentially identical to the variation tendency of motion, but the film bubble after undergoing technological transformation, film bubble comparatively fast reaches specified breadth value, said
The line of solidification of bright film bubble is low, and its cooling effect is preferable.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention not limited to this, any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (3)
1. a kind of vane cooling system, it is characterised in that including cold tower (3), Calibrating cage in the first blower fan (1), vane (2), IBC
(4), inflation film (5) and the second blower fan (8), first blower fan (1), vane (2), cold tower (3) in IBC, Calibrating cage (4),
The blower fan (8) of inflation film (5) second is sequentially connected, and the edge of the Calibrating cage (4) is provided with kuppe (6), the kuppe (6)
Top is provided with drainage blower fan (7).
2. vane cooling system according to claim 1, it is characterised in that the kuppe (6) is provided with uniform pore openings.
3. a kind of operating method of vane cooling system, it is characterised in that comprise the following steps：Melt flow stream is extruded via die orifice
Afterwards, moved longitudinally upward under the stretching action of tractive force, while cooling tower (3) exports 12 DEG C of cold wind in vane (2) and IBC
It is cooled down；12 DEG C of cold wind of vane (2) blowout, temperature reaches 15 DEG C after being conducted heat with film；15 DEG C of cold wind exists
Under the protection of kuppe, it is recycled to via drainage blower fan (7) at vane (2) import, the cold wind with 12 DEG C of air cooling mechanism cold enters
After row mixing, it is delivered to cooling tower (3) in vane (2) and IBC and film is cooled down again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176771.XA CN106985314A (en) | 2017-03-16 | 2017-03-16 | A kind of vane cooling system and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176771.XA CN106985314A (en) | 2017-03-16 | 2017-03-16 | A kind of vane cooling system and its operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106985314A true CN106985314A (en) | 2017-07-28 |
Family
ID=59413298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710176771.XA Pending CN106985314A (en) | 2017-03-16 | 2017-03-16 | A kind of vane cooling system and its operating method |
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| Country | Link |
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| CN (1) | CN106985314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267326A (en) * | 2020-02-24 | 2020-06-12 | 伍尚华 | Safe type environmental protection blown film device convenient to location |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2061811B (en) * | 1979-11-02 | 1984-07-11 | Harvey R D L R | Cooling blown extruded tubular film |
| GB2286557A (en) * | 1994-02-21 | 1995-08-23 | Windmoeller & Hoelscher | Method and apparatus for cooling the tubular web of a thermoplastic synthetic melt extruded from a film blowing head |
| CN2521026Y (en) * | 2002-01-15 | 2002-11-20 | 山东清源集团有限公司 | Polyethylene film blow moulding machine with closed circulation cool air inter cooling apparatus |
| CN203527730U (en) * | 2013-10-10 | 2014-04-09 | 中山市和美塑胶材料有限公司 | Circulating cooling device in bubble of film blowing machine |
| CN105415551A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film inner and outer airflow collaborative cooling method and device based on chimney effect |
-
2017
- 2017-03-16 CN CN201710176771.XA patent/CN106985314A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2061811B (en) * | 1979-11-02 | 1984-07-11 | Harvey R D L R | Cooling blown extruded tubular film |
| GB2286557A (en) * | 1994-02-21 | 1995-08-23 | Windmoeller & Hoelscher | Method and apparatus for cooling the tubular web of a thermoplastic synthetic melt extruded from a film blowing head |
| CN2521026Y (en) * | 2002-01-15 | 2002-11-20 | 山东清源集团有限公司 | Polyethylene film blow moulding machine with closed circulation cool air inter cooling apparatus |
| CN203527730U (en) * | 2013-10-10 | 2014-04-09 | 中山市和美塑胶材料有限公司 | Circulating cooling device in bubble of film blowing machine |
| CN105415551A (en) * | 2015-12-10 | 2016-03-23 | 华南理工大学 | Blown film inner and outer airflow collaborative cooling method and device based on chimney effect |
Non-Patent Citations (1)
| Title |
|---|
| 夏开邦: "《塑料与农业节水》", 30 April 2002, 北京：中国石化出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267326A (en) * | 2020-02-24 | 2020-06-12 | 伍尚华 | Safe type environmental protection blown film device convenient to location |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170728 |
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| RJ01 | Rejection of invention patent application after publication |