CN107738431A - A kind of backwash net band net-changing device - Google Patents
A kind of backwash net band net-changing device Download PDFInfo
- Publication number
- CN107738431A CN107738431A CN201711223844.2A CN201711223844A CN107738431A CN 107738431 A CN107738431 A CN 107738431A CN 201711223844 A CN201711223844 A CN 201711223844A CN 107738431 A CN107738431 A CN 107738431A
- Authority
- CN
- China
- Prior art keywords
- chamber
- cavity
- net
- changing device
- screen belt
- 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.)
- Withdrawn
Links
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
- B29C48/27—Cleaning; Purging; Avoiding contamination
- B29C48/2725—Cleaning; Purging; Avoiding contamination of filters
- B29C48/273—Cleaning; Purging; Avoiding contamination of filters using back flow
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of backwash net band net-changing device, can effectively solve the problems, such as that screen belt causes production cost higher to be disposable；It includes die cavity, and die cavity is made up of the first cooling chamber, the first heating chamber and the second cooling chamber, and die cavity or so, which runs through, the first chamber groove and the second chamber groove be arrangeding in parallel；Mobilizable first screen belt is placed with first chamber groove, mobilizable second screen belt is placed with the second chamber groove；Material chamber, the first cavity, the first impurity discharging passage and the second impurity discharging passage are provided with first heating chamber；Material chamber is front and rear to run through the first heating chamber, and material chamber intersects with the first cavity；Branching block movable up and down is provided with first cavity；Rotatable first Sealing shield ring is provided with the outside of second cooling chamber and rotatable second Sealing shield ring, branching block are fixedly connected with fluid pressure drive device；Simple and ingenious structure of the present invention, easy to manufacture processing, use range is wide, substantially increases the service life of screen belt.
Description
Technical field
The present invention relates to industrial extruders field, more particularly to a kind of backwash net band net-changing device.
Background technology
Extruder is widely used in the industrial production, essential in the production of most plastic product.Due to modeling
There is impurity in material, so the plastics of molten state need to use the screen belt removal of impurity in an extruder, screen belt uses one section
After time, because impurity is deposited, it is necessary to remove impurity.Traditional net belt type net-changing device, often roll up screen belt needs using after complete
Shut down and change screen belt, sometimes in the larger occasion of molten state plastic pressure in use, being limited by screen pack band matter intensity
Screen belt breakage problem easily occurs, and screen belt is disposable, and cost is higher, limits making for guipure net-changing device
Use scope.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the present invention is just to provide a kind of backwash net band
Net-changing device, can solve screen belt to be disposable, just need to change screen belt after impurity deposition, and to screen pack
The problem of band strength, toughness reguirements are high, and production cost is higher, allows screen belt to rinse repeatedly and uses 30-100 times.
Its technical scheme solved is a kind of backwash net band net-changing device, including die cavity, and die cavity is by the first cooling chamber, the
One heating chamber and the second cooling chamber composition, die cavity or so, which run through, the first chamber groove and the second chamber groove be arrangeding in parallel；First chamber groove
Mobilizable first screen belt is inside placed with, mobilizable second screen belt is placed with the second chamber groove；First heating chamber
It is interior to be provided with material chamber, the first cavity, the first impurity discharging passage and the second impurity discharging passage；Material chamber is front and rear run through the first heating chamber, expect chamber and
First cavity intersects；Branching block movable up and down is provided with first cavity, branching block fore-and-aft direction is provided with through hole, shunting
The first sediment flushing outlet is provided with above block inner via hole, the second sediment flushing outlet is provided with below branching block inner via hole；It is provided with the outside of second cooling chamber
Rotatable first Sealing shield ring and rotatable second Sealing shield ring, branching block are fixedly connected with fluid pressure drive device.
Simple and ingenious structure of the present invention, easy to manufacture processing, use range is wide, and substantially increase screen belt uses the longevity
Life, reduces the intensity and requirement to screen belt.
Brief description of the drawings
Fig. 1 is top view of the present invention.
Fig. 2 is the front sectional view of operating position one of the present invention.
Fig. 3 is the front sectional view of operating position two of the present invention.
Fig. 4 is the front sectional view of operating position three of the present invention.
Fig. 5 is the right side view of operating position one of the present invention.
Fig. 6 is the right side view of operating position two of the present invention.
Fig. 7 is the right side view of operating position three of the present invention.
Embodiment
The embodiment of the present invention is described in further details below in conjunction with accompanying drawing 1-7.
From Fig. 1-7, a kind of backwash net band net-changing device, including die cavity 1, die cavity 1 are added by the first cooling chamber 2, first
The cooling chamber 4 of hot cell 3 and second forms, and die cavity 1 or so, which runs through, the first chamber groove 5 and the second chamber groove 6 be arrangeding in parallel；First chamber groove
Mobilizable first screen belt 7 is placed with 5, mobilizable second screen belt 8 is placed with the second chamber groove 6；First adds
Material chamber 12, the first cavity 13, the first impurity discharging passage 16 and the second impurity discharging passage 17 are provided with hot cell 3；Expect that chamber 12 is front and rear through the
One heating chamber 3, material chamber 12 intersect with the first cavity 13；Branching block 18 movable up and down is provided with first cavity 13, is shunted
The fore-and-aft direction of block 18 is provided with through hole 19, and the top of 18 inner via hole of branching block 19 is provided with the first sediment flushing outlet 20, the inner via hole of branching block 18
19 lower sections are provided with the second sediment flushing outlet 21；The outside of second cooling chamber 4 is provided with rotatable first Sealing shield ring 22 and rotatable the
Two Sealing shield rings 23, branching block 18 are fixedly connected with fluid pressure drive device 24.
In order to ensure implementation result, among described the first cooling chamber 2 and the first heating chamber 3, the first heating chamber 3 and second
Heat insulation slot 9 is equipped among cooling chamber 4.
In order to ensure implementation result, water channel 10 is equipped with described the first cooling chamber 2 and the second cooling chamber 4.
In order to ensure implementation result, heating tube 11, the second cavity 14, the 3rd cavity are provided with the first described heating chamber 3
15, the second cavity 14 and the 3rd cavity 15 extend to and run through the second cooling chamber 4；Second cavity 14 and the first impurity discharging passage 16 with
And first chamber groove 5 be connected, the 3rd cavity 15 is connected with the second impurity discharging passage 17 and the second chamber groove 6.
In order to ensure implementation result, described material chamber 12 along plastics flow direction be divided into charging hole 27, the first runner 28,
Second runner 29, filtering cabin 30, discharge opening 31.
In order to ensure implementation result, the described chamber groove 5 of filtering cabin 30 and first intersects vertically setting.
In order to ensure implementation result, the lower section of first screen belt 7 is provided with the first porous plate 25 in described filtering cabin 30, the
The top of two screen belt 8 is provided with the second porous plate 26.
In order to ensure implementation result, described discharge opening 31 is arranged among the first porous plate 25 and the second porous plate 26.
In the use of the present invention,
There are three operating positions, including operating position one is non-when washing net, branching block 18 is in up and down motion centre position, through hole
19 front ends communicate with charging hole 27, and the rear end of through hole 19 communicates with the first runner 28 and the second runner 29；Operating position two
When i.e. the first screen belt 7 washes net, branching block 18 moves to lowest positions, through hole 19 in the presence of fluid pressure drive device 24
Front end communicates with charging hole 27, and the rear end of through hole 19 only communicates with the second runner 29, while the first runner 28 passes through first row
Miscellaneous hole 20 is connected with the first impurity discharging passage 16；When operating position three is that the second screen belt 8 washes net, branching block 18 drives in hydraulic pressure
Move to the top position in the presence of dynamic device 24, the front end of through hole 19 communicates with charging hole, the rear end of through hole 19 only with first point
Runner 28 is communicated, while the second runner 29 is connected by the second sediment flushing outlet 21 with the second impurity discharging passage 17.
During normal production, branching block 18 is in operating position one, and the plastics of molten state enter pan feeding chamber 12 from charging hole 27, so
Enter the first runner 28 and the second runner 29 under the shunting action of through hole 19 afterwards, then the molten state in the first runner 28
Molten state plastics of the plastics in the second runner 29 after the filtering of the first screen belt 7 and through the filtering of the second screen belt 8 converge
Flow and enter filtering cabin 30, the molten state plastics sub-fraction in last filtering cabin 30 flows along the first chamber groove 5 and the second cavity 14
And quick solidification is attached to formation material plug 32 on the first screen belt 7 in the presence of water channel 10, plays sealing anti-leak, separately
Sub-fraction is flowed along the second chamber groove 6 and the 3rd cavity 15 and quick solidification is attached to the second screen pack in the presence of water channel 10
Material plug 33 is formed on band 8, plays sealing anti-leak, most plastics pass through the injection material chamber 12 of discharge opening 31.
After producing a period of time, the first screen belt 7 and the second screen belt 8 net preceding depositing contaminants and become more, molten state
Plastics flow not smooth, pressure rise before net.Electrical control gear induction pressure raises change, starts heater and material plug 32 is added
Heat, make material plug 32 be changed into partly melting state and may move, while open the first Sealing shield ring 22.Then the band of fluid pressure drive device 24 is started
Dynamic branching block 18 is moved downwardly to operating position two, and now the rear end of 18 inner via hole of branching block 19 only communicates with the second runner 29,
The first runner 28 is connected by the first sediment flushing outlet 20 with the first impurity discharging passage 16 simultaneously；The plastics of molten state enter from charging aperture
Pan feeding chamber 12, the second runner 29 is then entered by the inner via hole 19 of branching block 18, entered after the filtering of the second screen belt 8
Filter position 30, because the runner 28 of filtering cabin 30 and first communicates and in the first runner 28 not from the inner via hole 19 of branching block 18
Molten state plastics are flowed into, so now the molten state plastics in filtering cabin 30 enter the first shunting through the reflux of the first screen belt 7
Road 28, while molten state plastics wash away the impurity before the first screen belt 7 in the first runner 28, clean the first screen belt
7, because the first runner 28 is communicated by the first sediment flushing outlet 20 in branching block 18 and the first impurity discharging passage 16, so impurity can edge
First impurity discharging passage 16 is discharged, and pressing material plug 32 enters the second cavity 14.Clean after a period of time, the first screen belt 7
Preceding pressure declines, and electrical control gear induction pressure declines, and starts fluid pressure drive device 24 and drives branching block 18 to move upward to
Operating position one, heater and fluid pressure drive device 24 are simultaneously closed off, material plug 32 solidifies again, closes the first Sealing shield ring
22, reenter normal production model.
After continuing to produce a period of time, the first screen belt 7 and the second screen belt 8 net preceding depositing contaminants and become more,
Molten state plastics flow not smooth, pressure rise before net.The rise change of electrical control gear induction pressure, can start branching block 18 and enter
Enter operating position three, carry out the cleaning process of the second screen belt 8.Second screen belt 8 cleans mechanism and the first screen belt 7
Cleaning mechanism is identical, and here is omitted.After wash number reaches setting value, electrical control gear sends draping prompting, changes
It according to produce reality is automatic draping or thermal source draping that net mode, which can be, the first Sealing shield ring 22 and the second Sealing shield ring 23
Opening and closing can be by heater control or electrical control gear control.
The present invention proposes the cleaning control mechanism of screen belt, greatly increases the service life of screen belt, simultaneously
Because the material pressure drop of reverse stream is low, the requirement to the intensity of screen belt, the up to backwash of 30-100 times are greatly reduced
Service life reduction net cost.It is applicable to the wire drawings of a variety of industrial plastic melts, granulation, film, sheet material, sheet material, fiber etc.
Production.
Claims (8)
1. a kind of backwash net band net-changing device, it is characterised in that including die cavity（1）, die cavity（1）By the first cooling chamber（2）, first
Heating chamber（3）With the second cooling chamber（4）Composition, die cavity（1）Left and right, which is run through, the first chamber groove be arrangeding in parallel（5）With the second chamber groove
（6）；First chamber groove（5）Inside it is placed with mobilizable first screen belt（7）, the second chamber groove（6）Inside it is placed with mobilizable
Two screen belts（8）；First heating chamber（3）It is interior to be provided with material chamber（12）, the first cavity（13）, the first impurity discharging passage（16）With second
Impurity discharging passage（17）；Expect chamber（12）It is front and rear to run through the first heating chamber（3）, expect chamber（12）With the first cavity（13）It is intersecting；First is empty
Chamber（13）Inside it is provided with branching block movable up and down（18）, branching block（18）Fore-and-aft direction is provided with through hole（19）, branching block
（18）Inner via hole（19）Top is provided with the first sediment flushing outlet（20）, branching block（18）Inner via hole（19）Lower section is provided with the second sediment flushing outlet
（21）；Second cooling chamber（4）Outside is provided with rotatable first Sealing shield ring（22）With rotatable second Sealing shield ring（23）,
Branching block（18）It is fixedly connected with fluid pressure drive device（24）.
A kind of 2. backwash net band net-changing device according to claim 1, it is characterised in that the first described cooling chamber（2）
With the first heating chamber（3）Middle, the first heating chamber（3）With the second cooling chamber（4）Centre is equipped with heat insulation slot（9）.
A kind of 3. backwash net band net-changing device according to claim 1, it is characterised in that the first described cooling chamber（2）
With the second cooling chamber（4）Inside it is equipped with water channel（10）.
A kind of 4. backwash net band net-changing device according to claim 1, it is characterised in that the first described heating chamber（3）
It is interior to be provided with heating tube（11）, the second cavity（14）, the 3rd cavity（15）, the second cavity（14）With the 3rd cavity（15）Extend to
And run through the second cooling chamber（4）；Second cavity（14）With the first impurity discharging passage（16）And the first chamber groove（5）It is connected, the
Three cavitys（15）With the second impurity discharging passage（17）And the second chamber groove（6）It is connected.
A kind of 5. backwash net band net-changing device according to claim 1, it is characterised in that described material chamber（12）Along plastics
Flow direction is divided into charging hole（27）, the first runner（28）, the second runner（29）, filtering cabin（30）, discharge opening（31）.
A kind of 6. backwash net band net-changing device according to claim 1, it is characterised in that described filtering cabin（30）With
One chamber groove（5）Intersect vertically setting.
A kind of 7. backwash net band net-changing device according to claim 1, it is characterised in that described filtering cabin（30）Interior
One screen belt（7）Lower section is provided with the first porous plate（25）, the second screen belt（8）Top is provided with the second porous plate（26）.
A kind of 8. backwash net band net-changing device according to claim 1, it is characterised in that described discharge opening（31）Set
In the first porous plate（25）With the second porous plate（26）It is middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223844.2A CN107738431A (en) | 2017-11-29 | 2017-11-29 | A kind of backwash net band net-changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223844.2A CN107738431A (en) | 2017-11-29 | 2017-11-29 | A kind of backwash net band net-changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107738431A true CN107738431A (en) | 2018-02-27 |
Family
ID=61239431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711223844.2A Withdrawn CN107738431A (en) | 2017-11-29 | 2017-11-29 | A kind of backwash net band net-changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107738431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023115983A1 (en) | 2022-07-11 | 2024-01-11 | Engel Austria Gmbh | Filter device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1446710A (en) * | 1972-08-29 | 1976-08-18 | Kalman P G | Filtering |
| EP0275462A2 (en) * | 1987-01-23 | 1988-07-27 | Indupack Ag | Method for filtering a molten plastic, and filter apparatus for an extruding installation |
| EP0875357A1 (en) * | 1997-05-02 | 1998-11-04 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Filter device for extruders and injection machines |
| DE10103990A1 (en) * | 2000-06-30 | 2002-01-10 | Josef Gail | Device for cleaning thermoplastic material |
| US6422852B1 (en) * | 1998-04-30 | 2002-07-23 | Kreyenborg Verwaltungen Und Beteiligungen Gmbh & Co. Kg | Filter device for extruders and injection moulding machines |
| DE102008014054A1 (en) * | 2008-03-13 | 2009-09-17 | Galun, Jürgen | Band screen melt filter for use in melt processing system to filter thermoplastic melts, has housing provided for sealing of front sides via sealing pieces of same or different geometry design, where sealing pieces are coolable and heatable |
| CN204505781U (en) * | 2015-03-04 | 2015-07-29 | 郑州格雷特机械有限公司 | Hydraulic pilot net belt net-changing device |
| CN207105571U (en) * | 2017-11-29 | 2018-03-16 | 河南安吉塑料机械有限公司 | A kind of backwash net band net-changing device |
-
2017
- 2017-11-29 CN CN201711223844.2A patent/CN107738431A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1446710A (en) * | 1972-08-29 | 1976-08-18 | Kalman P G | Filtering |
| EP0275462A2 (en) * | 1987-01-23 | 1988-07-27 | Indupack Ag | Method for filtering a molten plastic, and filter apparatus for an extruding installation |
| EP0875357A1 (en) * | 1997-05-02 | 1998-11-04 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Filter device for extruders and injection machines |
| US6422852B1 (en) * | 1998-04-30 | 2002-07-23 | Kreyenborg Verwaltungen Und Beteiligungen Gmbh & Co. Kg | Filter device for extruders and injection moulding machines |
| DE10103990A1 (en) * | 2000-06-30 | 2002-01-10 | Josef Gail | Device for cleaning thermoplastic material |
| DE102008014054A1 (en) * | 2008-03-13 | 2009-09-17 | Galun, Jürgen | Band screen melt filter for use in melt processing system to filter thermoplastic melts, has housing provided for sealing of front sides via sealing pieces of same or different geometry design, where sealing pieces are coolable and heatable |
| CN204505781U (en) * | 2015-03-04 | 2015-07-29 | 郑州格雷特机械有限公司 | Hydraulic pilot net belt net-changing device |
| CN207105571U (en) * | 2017-11-29 | 2018-03-16 | 河南安吉塑料机械有限公司 | A kind of backwash net band net-changing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023115983A1 (en) | 2022-07-11 | 2024-01-11 | Engel Austria Gmbh | Filter device |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180227 |
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| WW01 | Invention patent application withdrawn after publication |