CN105835336B - A kind of filtering exhaust formula extruder - Google Patents
A kind of filtering exhaust formula extruder Download PDFInfo
- Publication number
- CN105835336B CN105835336B CN201610333671.9A CN201610333671A CN105835336B CN 105835336 B CN105835336 B CN 105835336B CN 201610333671 A CN201610333671 A CN 201610333671A CN 105835336 B CN105835336 B CN 105835336B
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- Prior art keywords
- filter
- screw rod
- machine barrel
- sheath
- filter sheath
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Classifications
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
- B29C48/694—Cylindrical or conical filters
- B29C48/6945—Cylindrical or conical filters surrounding a rotating screw
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of filtering exhaust formula extruder, including decelerator, hopper, screw rod, machine barrel and filter screen porous plate, the filtering exhaust formula extruder also includes filter sheath, impurity removal valve, power connections, described machine barrel includes compression section, fillter section and exhaust section, and described filter sheath, impurity removal valve, power connections are arranged in fillter section.The present invention determines the granularity of filter material by the filter house of filter sheath and the fit clearance δ size of machine barrel; with traditional filter type when the clogging screen pack of filter material; replacing screen pack must be shut down; it could normally produce and compare; the present invention need not only be shut down; any parts need not be changed; and it will not be filled in by gambling; can be with continuous production; product ensures that plasticizing is good; extruder than prior art saves cost 1 18, improves operating efficiency 1 12, product quality is greatly improved.
Description
Technical field
The invention belongs to processing of high molecular material mechanical equipment technical field, specifically a kind of filtering exhaust formula extrusion
Machine.
Background technology
In extrusion plastic products or plastic granulation process, impurity and air in raw material must be removed from just can guarantee that production
Normally.The water content of general raw material can not surpass the 0.2% of raw material, control moisture method have it is several：1st, raw material is entered
Row pre-dried；2nd, pump-down process is extruded.It facts have proved that extrusion pump-down process effect is better than other method.But traditional extrusion
Method for exhausting has be difficult to overcome the shortcomings that, is exactly exhaust outlet blocking due to the screen pack porous plate by extruder head position
And feeding is not smooth, and then expected that clogging exhaust outlet is even vented overflow.At this moment have to shut down that change could be after after screen pack
Continuous production.Extrusion is vented referring to Fig. 1, decelerator shown in Fig. 1 is driven by motor and then drive screw again, and material is from hopper
The screw channel for entering screw rod promotes to the right, and screw rod A areas are material delivery areas, and material enters B areas by A areas and plastified by compression, then reached
First plasticizing metering zone C, the material compression now plastified reach highest, when material reaches E areas, because screw channel deepens, hold
Product mutation is big, now the unexpected step-down of material compression, and the gas expansion being mixed in material is just drained from exhaust outlet, the material warp after exhaust
Second-pumping compression plasticizing filtering enters molding die.
The condition that exhaust extrusion can be produced normally：1st, gas smoothly can drain from exhaust outlet；2nd, the conveying in screw rod G areas
Ability is more than the ability that C areas are sent.The groove depth in general G areas is 1.5-2 times of C areas groove depth, and some are bigger.The problem of real is G
The carrying capacity in area is not only relevant with groove depth pitch, and is influenceed by the filter area of porous plate screen pack, head pressure size etc.,
After screen pack is blocked by impurity, the Flow of Goods and Materials for flowing to mould has some setbacks, and now the material back-pressure at porous plate is very high, material
Porous plate can not be flowed out, and screw rod continues feeding, now material reversely will flow out from exhaust outlet, and at this moment production is forced to stop,
Screen pack must be so replaced, cleaning porous plate could continue to produce.This situation decades, it is necessary to improve it is anxious can not
Treat.
Present invention
The defects of in order to overcome prior art degassing extruder, it is an object of the invention to provide a kind of filtering exhaust formula extrusion
Machine, thoroughly solve the problems, such as complicated shoddy extrusion plastic products or the plug net of plastic reclaimed granulation, and automatic discharge can be realized
Automated production.
To achieve the above object, the present invention uses following technical scheme：
A kind of filtering exhaust formula extruder, including：Decelerator, hopper, screw rod, machine barrel and filter screen porous plate, its feature exist
In：The filtering exhaust formula extruder also includes：Filter sheath, impurity removal valve, power connections, described machine barrel include compression section,
Fillter section and exhaust section, described filter sheath, impurity removal valve, power connections are arranged in fillter section.
Described screw surface is provided with spiral shell rib in compression section and exhaust section, and screw surface does not have spiral shell rib, spiral shell in fillter section
Diameter of the bar in the non-spiral shell rib part of exhaust section changes from small to big, and same spiral shell rib root footpath is also changed from small to big with screw diameter, spiral shell rib
External diameter is constant.
Described filter sheath is arranged in the fillter section of machine barrel and is sleeved on screw rod, and filter sheath is cavity body, filter sheath
Left end be provided with the screw rod positioning hole coordinated with screw rod, the right-hand member of filter sheath is provided with screw rod pilot hole, the cavity body of filter sheath, spiral shell
Bar positioning hole and screw rod pilot hole coordinate with screw rod, and described filter sheath is made up of filter house and impurity reservoir, described mistake
The filter house external diameter of filter ruffle and machine tube inner wall gap are δ, and the scope of gap delta is 0.2mm≤δ≤1mm, the mistake of described filter sheath
The appearance in filter portion is axially arranged with 3-18 charging grooves, and charging groove penetrates filter sheath to impurity reservoir, described filter sheath
Filter house charging groove and charging groove between middle part be radially provided with 12-60 through holes, be distributed on the filtering of filter sheath
On portion's wall, impurity removal valve, one end of impurity removal valve and machine barrel are provided with corresponding to the impurity reservoir of described filter sheath at machine barrel
Connection, the other end of impurity removal valve are provided with power connections, and power connections are connected with impurity removal valve.
Described filter sheath is monoblock type or spliced.
Machine barrel in described exhaust section is provided with exhaust outlet, and spiral shell rib diameter is constant on screw rod, and screw diameter becomes big.
Described decelerator is arranged at one end of machine barrel, and the filter screen porous plate is arranged at the other end of machine barrel.
Described screw rod is arranged inside machine barrel and is connected with decelerator.
The beneficial effects of the present invention are：Due to using above-mentioned technical proposal, by the filter house of filter sheath and matching somebody with somebody for machine barrel
The size for closing gap delta determines the granularity of filter material, must with traditional filter type when filter material clogging screen pack
It must shut down and change screen pack, then could normally produce and compare, the present invention is not only to shut down, it is not necessary to is changed any
Parts, and exhaust outlet will not be filled in by gambling, can be with automatic continuous production, the product of production ensures that plasticizing is good, than existing
The extruder for having technology saves cost 1 18, improves operating efficiency 1 12, product quality is greatly improved.
Brief description of the drawings
Fig. 1 is the extruder exhaust structure schematic diagram of prior art；
Fig. 2 is a kind of organigram of filtering exhaust formula extruder of the present invention；
Fig. 3 is M-M schematic cross-sections in Fig. 2；
Fig. 4 is N-N schematic cross-sections in Fig. 2；
Fig. 5 is the filter sheath section enlarged diagram in Fig. 2；
Fig. 6 is C-C schematic cross-sections in Fig. 5.
Label declaration in accompanying drawing：
1. decelerator, 2. hoppers, 3. screw rods, 4. machine barrels, 41. compression sections, 42. fillter sections, 43. exhaust sections, 5. filter sheaths,
51. filter house, 52. impurity reservoirs, 52. impurity reservoirs, 53. charging grooves, 54. through holes, the cavity body of 55. filter sheaths,
56. screw rod positioning hole, 57. screw rod pilot holes, 6. impurity removal valves；7. power connections；8. filter screen porous plate.
Embodiment
The design of the present invention is described further with reference to the embodiment of Figure of description, in Figure of description
Embodiment be the present invention a kind of filtering exhaust formula extruder, specific embodiment be used only for explain the present invention, be not used to
Limit the present invention.
Fig. 1 is the extruder exhaust structure schematic diagram of prior art：Then decelerator drives drive screw again by motor,
The screw channel that material enters screw rod from hopper promotes to the right, and screw rod A areas are material delivery areas, and material enters B areas by A areas and moulded by compression
Change, then reach first plasticizing metering zone C, the material pressure now plastified reaches highest, when material reaches E areas, due to screw channel
Deepen, volume mutation is big, and now the mutation of material pressure is low, and the gas expansion being mixed in material is just drained from exhaust outlet, the material warp after exhaust
Second-pumping compression plasticizing filtering enters molding die, and the conveying capacity in screw rod G areas is more than the ability that C areas are sent.General G areas
Groove depth is 1.5-2 times of C areas groove depth, and some are bigger.The problem of real is that the carrying capacity in G areas is not only relevant with groove depth pitch, and
And influenceed by the filter area of porous plate screen pack, head pressure size etc., after screen pack is blocked by impurity, flow to mould
Flow of Goods and Materials has some setbacks, and now the material back-pressure at porous plate is very high, and material can not flow out porous plate, and screw rod continues feeding,
Now material reversely will flow out from exhaust outlet, and at this moment production is forced to stop, and must so replace screen pack, cleaning porous plate is
It can continue to produce.
As shown in figures 2-6, a kind of filtering exhaust formula extruder of the invention, including：Decelerator 1, hopper 2, screw rod 3, machine
Cylinder 4 and filter screen porous plate 8, the filtering exhaust formula extruder also include：Filter sheath 5, impurity removal valve 6, power connections 7, it is described
Machine barrel 4 include compression section 41, fillter section 42 and exhaust section 43, described filter sheath 5, impurity removal valve 6, power connections 7 are set
It is placed in 42 in fillter section.
The described surface of screw rod 3 is provided with spiral shell rib in compression section 41 and exhaust section 43, and the surface of screw rod 3 does not have in fillter section 42
Spiral shell rib, diameter of the screw rod 3 in the non-spiral shell rib part of exhaust section 43 change from small to big, same spiral shell rib root footpath with the diameter of screw rod 3 also by
Small to become big, spiral shell rib external diameter is constant.
As shown in figure 5, described filter sheath 5 is arranged in the fillter section 42 of machine barrel 4 and is sleeved on screw rod 3, filter sheath 5
For cavity body 55, the left end of filter sheath 5 is provided with the screw rod positioning hole 57 coordinated with screw rod, and the right-hand member of filter sheath 5 fills provided with screw rod
Distribution 56, cavity body 55, screw rod positioning hole 57 and screw rod pilot hole 56 and the screw rod 3 of filter sheath 5 coordinate, described filter sheath 5
It is made up of filter house 51 and impurity reservoir 52, the external diameter of filter house 51 and the inwall gap of machine barrel 4 of described filter sheath 5 are δ,
Gap δ is 0.5mm, and the appearance of the filter house 51 of described filter sheath 5 is axially arranged with 6 charging grooves 53, and charging groove 53 is uniform,
Feed groove 53 and penetrate filter house 51 to impurity reservoir 52, the charging groove 53 of the filter house 51 of described filter sheath 5 is with entering
Middle part between material groove 53 is radially provided with 24 through holes 54 and is distributed on the wall of filter house 51 of filter sheath 5, described filter sheath 5
Impurity reservoir 52 corresponding to be provided with impurity removal valve 6 at machine barrel 4, one end of impurity removal valve 6 is connected with machine barrel 4, impurity removal valve 6
The other end be provided with power connections 7, power connections 7 are connected with impurity removal valve 6.Described filter sheath 5 is monoblock type or spelling
Connect formula.Machine barrel 4 in described exhaust section 43 is provided with exhaust outlet, and spiral shell rib diameter is constant on screw rod 3, and the diameter of screw rod 3 becomes big.Institute
The decelerator 1 stated is arranged at one end of machine barrel 4, and the filter screen porous plate 8 is arranged at the other end of machine barrel 4.Described screw rod 3 is set
It is placed in the inside of machine barrel 4 and is connected with decelerator 1.
The external diameter of filter house 51 of described filter sheath 5 and the inwall gap of machine barrel 4 be both described fillter section 42 external diameter with
The internal diameter gap of machine barrel is δ.
Operation principle：Raw material enters the screw channel of screw rod 3 from hopper, and screw rod 3 rotates, and material is by a left side in the presence of spiral shell rib
Move right, become viscous state after the heated compression plasticizing of this process material, filtering is entered by the homogenization zone of screw rod 3 first
Section 42.The external diameter of fillter section 42 and the internal diameter gap of machine barrel are δ, and the scope of gap delta is 0.2mm≤δ≤1mm, and 6 are provided with outer garden
Bar feeds groove 53, and aperture 2-φ of φ 5 24, hole is provided with the charging both sides boss of groove 53.When the viscous state plastified
Material from screw rod 3 enter fillter section 42 when, material mainly from charging groove 53 enter.Because δ be present in external diameter and cylinder bore
Big gap, the material of plasticizing can be crossed δ gaps with certain pressure and enter the cavity of filter sheath again from cavity narrow slot from aperture
Enter the exhaust section 43 of screw rod (cavity of filtering to exhaust section 43 is provided with a plurality of narrow slot and communicated).Exhaust section 43 is due to sky
Between become big suddenly, the material come out from narrow slot is depressured suddenly, at this moment will be discharged from exhaust outlet and be arranged comprising aqueous vapor in the material
Go.Enter in addition the material of filtering area impurity and material when its volume is more than δ, be can not cross external diameter reach aperture
, it can only enter impurity storage area (storage area to exhaust section 42 is closing), when the impurity of storage area is few, storage area
Material is plastics and impurity and deposited, when impurity is cumulative, in the presence of high pressure, in the plastic pressure of storage area
Compel to return to filtering area with the pressure higher than filtering area, recross gap delta into aperture to exhaust section 43, because debris can not melt,
Mobility is bad, only rests on storage area.Gap delta can not be crossed and enter aperture, to exhaust section 43.When the impurity saturation of storage
Afterwards, material pressure can also raise, and at this moment solution pressure sensor can provide a signal, drive the baiting valve of slag-drip opening, now impurity
It will be discharged from baiting valve.Baiting valve is closed after pressure is reduced to normal value, enters subsequent cycle work again.
Expect that the porous plate before die head can carry out second of filtering (can not also refilter) again by what is filtered.
Due to by first of filtering, so be just not easy to be blocked when filtering for second, so as to thoroughly solve those compared with
The plug net problem of miscellaneous shoddy regeneration and granulation, and the automated production of automatic discharge can be realized.It is it is pointed out that this
New extrusion filtering exhaust technology can not only be used in regenerated plastics and produce, and can also be mounted between extruder and mould extensively
Produced for various product extrusions.
It is to be noted that the present invention filter method with conventional filtering method except that the mistake of conventional process filtration
Filtering element or net are to determine granularity, i.e. how many mesh number by the size of pore size filter, and filter method of the invention is to pass through
The fit clearance δ of part size determines grade of filtration.Traditional filter method when the clogging screen pack of filter material,
Must shut down could normally produce after resetting index filtra-tion net, but the present invention is not required to shut down, and is not required to change any part, can be automatic
Change, exhaust outlet will not be filled in by gambling.The material of production ensures that plasticizing is good.
Claims (1)
1. a kind of filtering exhaust formula extruder, including decelerator（1）, hopper（2）, screw rod (3), machine barrel (4), filter screen porous plate
（8）, filter sheath（5）, impurity removal valve（6）, power connections（7）, described machine barrel（4）Including compression section (41), fillter section
(42) and exhaust section (43), described filter sheath（5）, impurity removal valve（6）, power connections（7）It is arranged at fillter section（42）It is interior,
Described screw rod（3）Surface is in compression section（41）And exhaust section（43）Provided with spiral shell rib, screw rod（3）Surface is in fillter section（42）Do not have inside
There is spiral shell rib, screw rod (3) is in exhaust section（43）The diameter of non-spiral shell rib part change from small to big, same spiral shell rib root footpath is with screw rod（3）
Diameter also changes from small to big, and spiral shell rib external diameter is constant, described exhaust section（43）Interior machine barrel（4）Exhaust outlet is provided with, described subtracts
Fast device（1）It is arranged at machine barrel（4）One end, described filter screen porous plate（8）It is arranged at the other end of machine barrel (4),Described spiral shell
Bar (3) is arranged at machine barrel (4) inside and is connected with decelerator (1), it is characterised in that：Described filter sheath (5) is arranged at machine barrel
（4）Fillter section（42）It is interior and be sleeved on screw rod（3）On, filter sheath（5）For cavity body（55）, the left end of filter sheath (5) is provided with
With screw rod（3）The screw rod positioning hole (57) of cooperation, the right-hand member of filter sheath (5) are provided with screw rod pilot hole (56), the sky of filter sheath (5)
Cavity (55), screw rod positioning hole（57）With screw rod pilot hole（56）With screw rod（3）Coordinate, described filter sheath (5) is by filter house
(51) being formed with impurity reservoir (52), filter house (51) external diameter and machine barrel (4) inwall gap of described filter sheath (5) are δ,
The scope of gap delta is 0.2mm≤δ≤1mm, described filter sheath（5）Filter house（51）Appearance be axially arranged with 3-18 and enter
Expect groove (53), charging groove (53) is distributed on filter house（51）Appearance, charging groove (53) insertion filter house（51）It is extremely miscellaneous
Matter reservoir（52）, described filter sheath（5）Filter house（51）Charging groove（53）With feeding groove（53）Between in
Portion is radially provided with 12-60 through holes（54）, it is distributed on filter sheath（5）Filter house（51）On wall, described filter sheath (5)
Machine barrel corresponding to impurity reservoir (52)（4）Place is provided with impurity removal valve（6）, impurity removal valve（6）One end be connected with machine barrel (4),
Impurity removal valve（6）The other end be provided with power connections（7）, power connections（7）With impurity removal valve（6）Connection, described mistake
Filter ruffle（5）For monoblock type or spliced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610333671.9A CN105835336B (en) | 2016-05-19 | 2016-05-19 | A kind of filtering exhaust formula extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610333671.9A CN105835336B (en) | 2016-05-19 | 2016-05-19 | A kind of filtering exhaust formula extruder |
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| Publication Number | Publication Date |
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| CN105835336A CN105835336A (en) | 2016-08-10 |
| CN105835336B true CN105835336B (en) | 2017-12-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097393A (en) * | 2017-06-15 | 2017-08-29 | 苏州金泉新材料股份有限公司 | The Screw Extrusion head filter of screw extruder |
| CN108058355B (en) * | 2018-02-07 | 2023-09-12 | 北京工商大学 | Double-screw extruder with forced mixing structure |
| CN108187380A (en) * | 2018-03-06 | 2018-06-22 | 嘉兴希卡姆复合材料有限公司 | A kind of polyamide compoiste material produces special feeding and filtering device |
| CN110978393A (en) * | 2019-12-17 | 2020-04-10 | 徐福全 | Injection mold for injection molding machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA74926C2 (en) * | 2004-03-16 | 2006-02-15 | Yevhenii Petrovych Barmashyn | Extruder for processing of thermoplastic polymeric materials with area of filtration and degassing |
| CN201960726U (en) * | 2011-03-28 | 2011-09-07 | 郑建财 | Non-stop impurity removing plastic extruding machine |
| CN103121282A (en) * | 2013-01-28 | 2013-05-29 | 胡君 | Novel double-screw extruder |
| CN203831605U (en) * | 2013-12-04 | 2014-09-17 | 北京绿城伟业环保科技有限公司 | Plastic granulator, filtering device and filtering net |
| CN205219593U (en) * | 2015-12-18 | 2016-05-11 | 合肥博淮电池科技有限公司 | Module feed arrangement that moulds plastics |
| CN205614985U (en) * | 2016-05-19 | 2016-10-05 | 佛山市奔浩塑料机械有限公司 | Filter exhaust formula extruder |
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- 2016-05-19 CN CN201610333671.9A patent/CN105835336B/en active Active
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