CN208068829U - A kind of rush plasticizing type polyester fondant filter device - Google Patents
A kind of rush plasticizing type polyester fondant filter device Download PDFInfo
- Publication number
- CN208068829U CN208068829U CN201820152676.6U CN201820152676U CN208068829U CN 208068829 U CN208068829 U CN 208068829U CN 201820152676 U CN201820152676 U CN 201820152676U CN 208068829 U CN208068829 U CN 208068829U
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- China
- Prior art keywords
- melt
- filter
- pipe
- rush
- melt pipe
- Prior art date
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- Expired - Fee Related
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- 229920000728 polyester Polymers 0.000 title claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims description 18
- 210000002445 nipple Anatomy 0.000 claims description 15
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 15
- 238000001125 extrusion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920006267 polyester film Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000000872 buffer Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002266 amputation Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of rush plasticizing type polyester fondant filter device, including two multistage filters, by two multistage filter both ends feed liquor melt pipe parallel with one another, go out liquid melt pipe, an inlet tube is connected on feed liquor melt pipe, inlet tube connecting extruder, go out on liquid melt pipe and is connected to outlet tube, outlet tube connects melt surge tank, melt surge tank connects metering pump, the connectivity part of inlet tube and feed liquor melt pipe is provided with No.1 regulating valve, outlet tube is provided with No. two regulating valves with the connectivity part for going out liquid melt pipe, it is both provided with nitrogen inlet duct on the feed liquor melt pipe of No.1 regulating valve both sides.By the filter screen of three-level different pore size, effectively impurity, big not resinifying agent in melt can be amputated.When melt passes through filter screen, strand orientation, is stretched by fine and closely woven opening of sieve, shearing, and after filter screen, the pressure that opening of sieve is given disappears, and melt swell, molecule chain relaxation is conducive to the raising of polyester fondant degree of plasticification.
Description
Technical field
The utility model belongs to plastic film processing technique field, is related to a kind of flat membrane method polyester film melt extrusion filtering
Device more particularly to nitrogen pressurization, protection, promote plasticizing type polyester fondant filter device.
Background technology
During melt extrusion, in order to remove the impurity in melt, fisheye, aggregated particle or other foreign matters, and protect
Metering pump is injury-free and ensures product quality, therefore installation fondant filter is needed on melt extrusion pipeline.Generally in metering pump
One filter of front and back each installation, before metering pump be coarse filter, effect be make melt by screw rod spiral transport
It is dynamic to become moving along a straight line；Increasing stream back pressure keeps melt closely knit；Thicker impurity and non-fusant is prevented to pass through, protection metering pump,
Extend fine filter service life.
Dish-style or board-like can be used in coarse filtration.Plate-type filtering does not shut down net-changing device also referred to as, it be hydraulically operated device and
Screen pack two parts form.Strainer and spare strainer work simultaneously on a slide plate, in the promotion of hydraulic cylinder when draping
Under, slide plate enters melt flow channel, old net is released, new net change, and slide plate speed is exceedingly fast, and draping action only needs 0.1 second, therefore nothing
It must shut down, therefore claim not shut down draping.
Essence filtering generally use dish-style filter, also has using tubular filter.Dish-style filter by several filter dish and
Filtration barrel body forms, a diameter of 12 inches of filter dish（304.8mm）, inner core diameter 85mm, thickness about 6.5mm.When work melt from
The gap flow direction filter butterfly surface for filtering star stainless steel spacer between butterfly, under melt pressure effect, pass through strainer finally from
The aperture outflow for filtering butterfly inner circle, melt pipe is entered back into the outlet of filter plug.
The gross area of filter is related with the production capacity of film, and filter area is bigger, and usage time is longer, has generally served as
It is necessary to replacing filter when pressure reaches certain pressure difference before and after filter.
The filter cylinder for placing filter dish and star shaped separators is by high temperature forging, inner cavity mirror finish, and R values are wanted
It asks and reaches 0.2 μ.Cylinder will be resistant to the pressure of 350 DEG C of high temperature and 25MPa.
Electrical heating can be used in filter cylinder heating, most handy heat-conducting oil heating, homogeneous heating, easy control of temperature.Add
Hot temperature is generally at 280 DEG C or so.
Though existing melt filter preferably completes the contaminant filter problem in PET melt extrusion, substantially
Meet the needs of production of the polyester films such as BOPET and OPETG.But it is mounted on the subsequent fine filter of metering pump, meeting
So that the stable melt flow into die head some minor swings is occurred, bad shadow is caused to the thickness control of film and stable quality
It rings.
Meanwhile the common disc-type filter for installation of flat membrane method polyester film, not only equipment is huge, occupied space and energy consumption compared with
Greatly, and replacement maintenance is cumbersome, and work difficulty and workload are larger, and there are certain security risks for field maintenance.
In addition, to ensure that melt filtration quality, flow velocity of the melt in fondant filter are generally designed relatively slow, melt
The residence time can be longer in fondant filter hot environment, there is high temperature pyrolysis, hydrolysis and the risk of oxidative degradation.
Utility model content
For thoroughly solve the problems, such as above-mentioned risk existing for current fondant filter device and, eliminate polyester film process
The hidden danger of quality that middle melt flow wave zone comes, the rush plasticizing type polyester fondant mistake that a kind of nitrogen of the utility model pressurizes, protects
Filter device.
To realize the utility model aim, following technical scheme is provided：A kind of rush plasticizing type polyester fondant filter device,
It is characterized by comprising two multistage filters, by two multistage filter both ends feed liquor melt pipe parallel with one another, go out liquid
Melt pipe is connected to an inlet tube on feed liquor melt pipe, and inlet tube connecting extruder goes out on liquid melt pipe and is connected to out liquid
Pipe, outlet tube connect melt surge tank, and melt surge tank connects metering pump, and the connectivity part of inlet tube and feed liquor melt pipe is arranged
Have a No.1 regulating valve, outlet tube and the connectivity part for going out liquid melt pipe are provided with No. two regulating valves, No.1 regulating valve both sides into
It is both provided with nitrogen inlet duct on liquid melt pipe.Manually or automatically switch No.1, No. two regulating valve opening directions, realizes
Continuous filtering and production are realized in switching between two groups of multistage filters.
If being set to dried layer in filter tube body preferably, multistage filter includes filter tube body, uniform intervals
Filter screen, if the filtering accuracy of dried layer filter screen is from thick to thin.
Preferably, filter tube body is spliced by the pipe nipple of several 0.5 ~ 0.65 meter of sections, every layer of filter screen is set to
Between adjacent pipe nipple.
Preferably, filter screen is set as one, two, three layer, the precision of three layer filtration is respectively：250 mesh（60μm）,425
Mesh（35μm）, 800 mesh（18μm）.
Preferably, the pipe nipple after first layer filter screen and first layer filter screen is processed into micro- loudspeaker that inclination angle is 6-8 °
Mouth-shaped.
Preferably, feed liquor melt pipe, going out a diameter of 40 ~ 60mm of liquid melt pipe.
Preferably, the filter internal diameter of tube body of multistage filter is 100 ~ 150mm.
Preferably, filter screen is made of sieve plate and three layers of strainer.
The utility model advantageous effect：The utility model will can effectively be melted by the filter screen of three-level different pore size
Impurity, the amputation of big not resinifying agent in body.When melt passes through filter screen, strand orientation, is drawn by fine and closely woven opening of sieve, shearing
It stretches, after filter screen, the pressure that opening of sieve is given disappears, melt swell, molecule chain relaxation.It is further with runner forward
It broadens, melt flow rate slows down, and melt will be more fluffy, and strand has greater room relaxation and free movement, is conducive to gather
The raising of ester melt degree of plasticification.During this, some in melt are plasticized incomplete materials, pseudomorphic crystal point, small fisheye will be into
One step is plasticized, and achievees the purpose that promote plasticizing.
Under nitrogen pressurization protection, after melt is by tertiary filter, melt surge tank is flowed into together with nitrogen, melt exists
Tank bottom is assembled, and by stirring further homogenizing, part is avoided to generate overheat.Nitrogen focuses on buffering tank top, after continuation of insurance
Protect oxidation of the melt from air.Meanwhile the nitrogen on top also gives the melt certain pressure of buffering pot bottom.
Melt buffers pot bottom and is connect with metering pump inlet by melt pipe.By metering pump by melt conveying to mould
Head.
Melt buffer tank volume is designed as 2-3 times of production line extruder rated output summation per hour.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is filter screen structure schematic diagram.
Specific implementation mode
Embodiment 1：Main extruder；
Pattern：Parallel double-screw extruder；
Screw diameter：120mm；
Draw ratio：40:1；
Maximum plasticating capacity：1200kg/h；
The feed liquor melt pipe 2 mating with it, to go out liquid melt pipe 3 be 60mm, and filter internal diameter of tube body is 150mm.
A kind of rush plasticizing type polyester fondant filter device, including two tertiary filters 1, by two 1 liang of tertiary filters
It holds feed liquor melt pipe 2 parallel with one another, go out liquid melt pipe 3, an inlet tube 4, inlet tube 4 are connected on feed liquor melt pipe 2
Connecting extruder 5 goes out connection outlet tube 6 on liquid melt pipe 3, and outlet tube 6 connects melt surge tank 7, and melt surge tank 7 connects
Metering pump 8, the connectivity part of inlet tube 4 and feed liquor melt pipe 2 are provided with No.1 regulating valve 9, outlet tube 6 and go out liquid melt pipe
3 connectivity part is provided with No. two regulating valves 10, and nitrogen air inlet is both provided on the feed liquor melt pipe 2 of 9 both sides of No.1 regulating valve
Pipe 11.Tertiary filter 1 include the filter tube body 1.1 being spliced by four 0.5 ~ 0.65 meter of pipe nipple 1.1.1 of section, uniformly between
Every the three layer filtration net 1.2 being set in filter tube body 1.1, every layer of filter screen 1.2 is set between adjacent pipe nipple 1.1.1,
The filtering accuracy of three layer filtration net 1.2 from thick to thin, one, two, three layer filtration net（1.2a,1.2b,1.2c）, filtering accuracy difference
For：250 mesh（60μm）, 425 mesh（35μm）, 800 mesh（18μm）.After first layer filter screen 1.2a and first layer filter screen 1.2a
Pipe nipple 1.1.1 is processed into micro- bell shape that inclination angle is 6-8 °.Filter screen 1.2 is by sieve plate 1.2.1 and three layers of strainer
1.2.2 it constitutes, by bolt presses among two section pipe nipple 1.1.1, tube wall plays a supporting role to sieve plate 1.2.1, sealing ring
So that the junctions pipe nipple 1.1.1 is realized sealing, forms the melt canal being fully sealed.Sieve plate 1.2.1 patterns and 5 web plate phase of extruder
Together, it is the certain thickness round web plate uniformly punched.Its perforated area in the runner for the smaller sides pipe nipple 1.1.1 being connected
Diameter is identical.It is main to play support strainer 1.2.2.Sieve plate 1.2.1 outer diameters are between pipe nipple 1.1.1 internal diameters and pipe nipple 1.1.1 inner tubes
Between wall outer diameter.Close to centre position on the outer rings sieve plate 1.2.1, two round shallow slots are offered, for installing sealing ring.It installs additional
The end of the pipe nipple 1.1.1 inner tubal walls of sieve plate 1.2.1 and strainer 1.2.2, with lathe inwards vehicle go out it is identical as sieve plate 1.2.1 outer diameters
Groove, depth be sieve plate 1.2.1 thickness 49.5-49.8%.
Embodiment 2：With reference to embodiment 1：Subsidiary extruder；
Pattern：Parallel double-screw extruder；
Screw diameter：62mm；
Draw ratio：40:1；
Maximum plasticating capacity：200kg/h；
The feed liquor melt pipe 2 mating with it, to go out liquid melt pipe 3 be 40mm, and 1.1 internal diameter of filter tube body is 100mm.
Melt pipe inner tube belongs to high-temperature and pressure pipeline, inner tube homogeneous thick-walled seamless steel pipes, material choosing in above-described embodiment
With austenitic stainless steel, i.e. OCr18Ni9.Inner wall reaches 0.3 μm of mirror finish or less.It can bear 25MPa's at 300 DEG C
Internal pressure.
Strainer material is 304 stainless steels.
Using same mode of heating special steam heating mantle heats may be used, electricity adds in multistage filter and melt pipe
The mode of heat or heat-conducting oil heating.Recommend the mode of special steam heating mantle heats.
Special steam heating mantle is a heating in vacuum set.This heating mantle is that the stainless steel of an electrified heating device is closed
Chuck.It is evacuated inside chuck, suitable special, high-purity liquid is added, then seals it off.When work, utilize
Electrical heating makes liquid vaporize, and realizes vapor heated purpose.Special steam mode of heating does not have to oil pump and recycles fuel feeding, can avoid adding
The heating dead angle that hot jacket occurs reduces maintenance of equipment expense.But electric heating system is required tighter.
Claims (8)
1. a kind of rush plasticizing type polyester fondant filter device, it is characterised in that including two multistage filters, by two multistage mistakes
Filter both ends feed liquor melt pipe parallel with one another goes out liquid melt pipe, and an inlet tube, inlet tube are connected on feed liquor melt pipe
Connecting extruder goes out on liquid melt pipe and is connected to outlet tube, and outlet tube connects melt surge tank, the connection metering of melt surge tank
The connectivity part of pump, inlet tube and feed liquor melt pipe is provided with No.1 regulating valve, outlet tube and the connectivity part for going out liquid melt pipe
No. two regulating valves are provided with, nitrogen inlet duct is both provided on the feed liquor melt pipe of No.1 regulating valve both sides.
2. a kind of rush plasticizing type polyester fondant filter device according to claim 1, it is characterised in that multistage filter packet
If including filter tube body, uniform intervals are set to dried layer filter screen in filter tube body, if the filtering accuracy of dried layer filter screen
From thick to thin.
3. a kind of rush plasticizing type polyester fondant filter device according to claim 2, it is characterised in that filter tube body by
The pipe nipple of several 0.5 ~ 0.65 meter of sections is spliced, and every layer of filter screen is set between adjacent pipe nipple.
4. a kind of rush plasticizing type polyester fondant filter device according to claim 2, it is characterised in that filter screen is set as
One, two, three layers, the precision of three layer filtration is respectively：250 mesh（60μm）, 425 mesh（35μm）, 800 mesh（18μm）.
5. a kind of rush plasticizing type polyester fondant filter device according to claim 4, it is characterised in that first layer filter screen
It is processed into micro- bell shape that inclination angle is 6-8 ° with the pipe nipple after first layer filter screen.
6. a kind of rush plasticizing type polyester fondant filter device according to claim 1, it is characterised in that feed liquor melt pipe,
Go out a diameter of 40 ~ 60mm of liquid melt pipe.
7. a kind of rush plasticizing type polyester fondant filter device according to claim 1, it is characterised in that multistage filter
Filter internal diameter of tube body is 100 ~ 150mm.
8. a kind of rush plasticizing type polyester fondant filter device according to claim 2, it is characterised in that filter screen is by sieve plate
It is constituted with three layers of strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152676.6U CN208068829U (en) | 2018-01-30 | 2018-01-30 | A kind of rush plasticizing type polyester fondant filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152676.6U CN208068829U (en) | 2018-01-30 | 2018-01-30 | A kind of rush plasticizing type polyester fondant filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208068829U true CN208068829U (en) | 2018-11-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820152676.6U Expired - Fee Related CN208068829U (en) | 2018-01-30 | 2018-01-30 | A kind of rush plasticizing type polyester fondant filter device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115917A (en) * | 2018-01-30 | 2018-06-05 | 江苏光辉包装材料有限公司 | A kind of rush plasticizing type polyester fondant filter device |
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2018
- 2018-01-30 CN CN201820152676.6U patent/CN208068829U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115917A (en) * | 2018-01-30 | 2018-06-05 | 江苏光辉包装材料有限公司 | A kind of rush plasticizing type polyester fondant filter device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |