CN102320121A - Nonstop self-cleaning long-acting filter for extruding machine - Google Patents
Nonstop self-cleaning long-acting filter for extruding machine Download PDFInfo
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- CN102320121A CN102320121A CN201110186205A CN201110186205A CN102320121A CN 102320121 A CN102320121 A CN 102320121A CN 201110186205 A CN201110186205 A CN 201110186205A CN 201110186205 A CN201110186205 A CN 201110186205A CN 102320121 A CN102320121 A CN 102320121A
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- filter
- reversal valve
- screen tube
- screen
- cylinder shell
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Abstract
The invention relates to a nonstop self-cleaning long-acting for an extruding machine, which comprises a filtering cartridge casing and a filtering device, wherein the filtering cartridge casing is provided with a feed opening and a discharge hole; two sets of standby filtering devices which can work in turn are arranged in an inner cavity of a filter screen casing in parallel; an outlet reversing valve is arranged at the discharge end; an outlet of the outlet reversing valve is communicated with the discharge hole; a plug is arranged at one end of the filtering device and is detachably arranged in the filtering cartridge casing; an inlet reversing valve and the outlet reversing valve respectively comprise a reversing valve core and a mounting base body; the mounting base bodies are arranged on the filtering cartridge casing; the extending end of each reversing valve core penetrates through each mounting base body and extends out of the filtering cartridge casing; a distributing opening is arranged on the outlet reversing valve; discharge openings are arranged on cavities of the filtering cartridge casing, which correspond to the two sets of filtering devices; and plugs are correspondingly arranged on the discharge openings. According to the nonstop self-cleaning long-acting disclosed by the invention, two parallel filtering devices are adopted to realize the nonstop net replacing operation, realize the function of automatic cleaning and meet the requirement for continuous production.
Description
Technical field
The present invention relates to the filter technology field of plastics machinery, especially a kind of extruder is not shut down long-acting filter with self-cleaning.
Background technology
In plastics machinery, filter also is a critical component, and plastic raw materials is extruded the back through the extruder heating spiral rod and got into filter net device; Because the plastic raw materials overwhelming majority can not adopt brand-new material article of manufacture, need add various auxiliary materials in process of production, like color material, modification agent etc.; Also can add a certain proportion of recovery cycle stock in the plastics that can be recycled; Because the impurity that contains in these auxiliary materials is more, contains post-production and use that impurity can influence product in the extruded product, filter makes material obtain filtering; And can improve the mixed effect of material, so filter has become necessary part.Traditional long-acting filter comprises the filter cylinder shell, is arranged on screen tube, branch fluid, preceding plug, back plug and heater in the filter cylinder shell.The two ends of filter cylinder shell are respectively through preceding plug and back plug sealing; Divide fluid to be arranged on the screen tube inner chamber; Have several through holes on the screen tube; The screen tube skin is coated with one or more layers screen pack, and the filter cylinder shell is provided with charging aperture and discharging opening, and a plurality of cylindrical heaters are arranged on the housing of filter screen shell.Operation principle: the plastic raw materials that extruder is extruded molten condition gets into filter cylinder from charging aperture, is concentrated by minute fluid after filtering and extrudes to discharging opening, gets into down to operation again.Because the particularity of the production of plastic raw materials extruding raw material, spray silk or going out in the membrane process, needs through being heated into molten condition; Could be formed the goods of different shape by mould, and all need not shut down use, the clean pressure that screen pack produced is less; If impurities more for a long time in the plastic raw materials, filter screen takes place to stop up over pressure and cause danger, along with the increase of pressure; It is many that amount of impurities in the plastics of being held back on the screen pack just becomes, thereby block screen pack.Therefore after filter screen blocks, should in time change filter screen, must shut down when changing filter screen, when changing the screen pack that blocks.The quantity-produced later process is brought influence, and shutdown need be heated again after changing the filter screen reparation, got into later process again, wastes energy, produces substandard products, causes waste.
Summary of the invention
The technical problem that the present invention will solve is: in order to solve the deficiency of prior art; The present invention provides a kind of extruder not shut down long-acting filter with self-cleaning; Adopt two filters of parallel connection to realize not shutting down the draping operation, can also realize the self-cleaning function, satisfy continuous production requirement.
The technical solution adopted for the present invention to solve the technical problems is: a kind of extruder is not shut down long-acting filter with self-cleaning, comprises the filter cylinder shell and is arranged on the filter in the filter cylinder shell inner cavity, has charging aperture and discharging opening on the filter cylinder shell; Described filter comprises screen tube and the coaxial branch fluid that is arranged in the screen tube, has several through holes on the cylindrical shell of screen tube, and the screen tube skin is coated with screen pack; Parallel connection is provided with two and overlaps the filter that spare wheel each other changes jobs in the described filter screen shell inner cavity, has demarcation strip between the two sets filtering device, forms feed cavity between the inwall of filter screen shell and demarcation strip sidewall and the screen pack; Form the discharging chamber between screen tube inwall and the branch fluid; The two ends of demarcation strip are respectively feed end that communicates with feed cavity and the discharge end that communicates with the discharging chamber, and the import reversal valve is installed on the feed end, and the import of import reversal valve is communicated with charging aperture; The outlet reversal valve is installed on the discharge end; The outlet of outlet reversal valve is communicated with discharging opening, and an end of filter is equipped with plug, and plug detachably is installed in the filter cylinder shell; Described import reversal valve includes reversing valve core and pedestal is installed with the outlet reversal valve; Pedestal is installed is installed on the filter cylinder shell, the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell, offers a sub-material mouth on the described outlet reversal valve; Offer discharge port on the cavity of the corresponding two sets filtering device of filter cylinder shell, the corresponding stopper that removably connects that is provided with on the discharge port.Subsequent use each other wheel of two sets filtering device changes jobs, and when exporting reversal valve and wherein a sets filtering device is communicated with, the sub-material mouth is communicated with another set of filter, thereby realizes the purpose of back flush, and impurity is followed fused materials and flowed out from discharge port.
Further, offer two mutually perpendicular outlets on the described outlet reversal valve, described discharging opening is positioned on the bisector of two outlets.This structure realizes the control to back flush, realizes whether back flush through the position of control outlet reversal valve, practices thrift material.
Destroy the structure of screen pack when preventing back flush, improve intensity, described screen tube skin is coated with two-layer at least screen pack.
For making reversal valve be convenient to operation, described import reversal valve and outlet reversal valve include reversing valve core and pedestal are installed, and pedestal is installed is installed on the filter cylinder shell, and the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell.
It is smooth and easy for material is flowed in the filter cylinder shell inner cavity; Raise the efficiency, the branch fluid of described filter has a guiding cone, and the great circle of guiding cone is directly held with the screen tube inwall and is fixedly connected; The larger diameter end of guiding cone also has a bullet that is used for shutoff screen tube end face; Have the passage that supplies fused materials entering feed cavity between bullet and the filter cylinder shell, divide the smaller diameter end of fluid to stretch out screen tube, screen tube is fixedly connected with plug near an end of the minor diameter of guiding cone; Have the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone and the plug, have the perforate that communicates with demarcation strip top discharge end on the plug.
For for convenience detach, the great circle of described guiding cone is directly held with the screen tube inner thread and is removably connected, and screen tube removably connects near an end and the plug screw thread of the minor diameter of guiding cone.
The invention has the beneficial effects as follows that extruder of the present invention is not shut down the two sets filtering device that long-acting filter adopts parallel connection to be provided with self-cleaning, realize not shutting down the replacing filter with the outlet reversal valve through regulating the import reversal valve; The outlet reversal valve offers discharging opening, can realize back flush, does not need dismounting can realize that filter screen cleans; Thereby guarantee the later process operate as normal, reduce the generation of substandard products, shutdown operation is not enhanced productivity; Energy savings; Save time, save material, after the detachable back of filter net device that is in the state of quitting work is changed or is cleaned for future use.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is extruder of the present invention is not shut down one of them duty in the long-acting filter most preferred embodiment with self-cleaning a structural representation;
Fig. 2 is extruder of the present invention is not shut down another duty in the long-acting filter most preferred embodiment with self-cleaning a structural representation;
Fig. 3 is extruder of the present invention is not shut down another duty in the long-acting filter most preferred embodiment with self-cleaning a structural representation;
Fig. 4 is extruder of the present invention is not shut down another duty in the long-acting filter most preferred embodiment with self-cleaning a structural representation.
Among the figure: 1. filter cylinder shell, 11. discharge ports, 12. stoppers, 2. filter, 21. screen tubes; 22. the branch fluid, 22-1. guiding cone, 22-2. bullet, 3. demarcation strip, 31. feed ends; 32. discharge end, 4. the import reversal valve 5. exports reversal valve, 51. sub-material mouth, 6. plugs.
The specific embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Fig. 1-the 4th, extruder of the present invention is not shut down the most preferred embodiment of long-acting filter with self-cleaning, comprises filter cylinder shell 1 and is arranged on the filter 2 in filter cylinder shell 1 inner chamber, has charging aperture and discharging opening on the filter cylinder shell 1; Filter 2 comprises screen tube 21 and the coaxial branch fluid 22 that is arranged in the screen tube 21, has several through holes on the cylindrical shell of screen tube 21, and screen tube 21 skins are coated with two-layer at least screen pack; Parallel connection is provided with two and overlaps the filter 2 that spare wheel each other changes jobs in filter screen shell 1 inner chamber, has demarcation strip 3 between the two sets filtering device 2, forms feed cavity between the inwall of filter screen shell 1 and demarcation strip 3 sidewalls and the screen pack; Form the discharging chamber between screen tube 21 inwalls and the branch fluid 22; The two ends of demarcation strip 3 are respectively feed end 31 that communicates with feed cavity and the discharge end 32 that communicates with the discharging chamber, and import reversal valve 4 is installed on the feed end 31, and the import of import reversal valve 4 is communicated with charging aperture; Outlet reversal valve 5 is installed on the discharge end 32; The outlet of outlet reversal valve 5 is communicated with discharging opening, and an end of filter 2 is equipped with plug 6, and plug 6 detachably is installed in filter cylinder shell 1; Import reversal valve 4 includes reversing valve core and pedestal is installed with outlet reversal valve 5; Pedestal is installed is installed on the filter cylinder shell 1, the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell 1, offers a sub-material mouth 51 on the outlet reversal valve 5; Offer discharge port 11 on the cavity of filter cylinder shell 1 corresponding two sets filtering device 2; The corresponding stopper 12 that removably connects that is provided with for making stopper 12 and discharge port 11 easy accessibility, is selected the form that is threaded for use on the discharge port 11.
Offer two mutually perpendicular outlets on the outlet reversal valve 5, discharging opening 51 is positioned on the bisector of two outlets.
The branch fluid 22 of filter 2 has a guiding cone 22-1; The great circle of guiding cone 22-1 is directly held with screen tube 21 inner threads and is removably connected; The larger diameter end of guiding cone 22-1 also has a bullet 22-2 who is used for shutoff screen tube 21 end faces; Have between bullet 22-2 and the filter cylinder shell 1 and supply fused materials to get into the passage of feed cavity; Divide the smaller diameter end of fluid 22 to stretch out screen tube 21; Screen tube 21 removably connects near an end and plug 6 screw threads of the minor diameter of guiding cone 22-1, has the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone 22-1 and the plug 6, has the perforate that communicates with demarcation strip 3 top discharge ends 32 on the plug 6.
The present invention has changed traditional filtration device structure, and real realization need not shut down the purpose of draping, and the screen tube 21 of employing is a core structure, and filter area is big.Need regulate import reversal valve 4 and outlet reversal valve 5 during use simultaneously; Make one of them filter 2 in running order; Another is in halted state, and can change this moment to the filter 2 that is in halted state, screen pack cleaned for future use again.
Shown in Figure 1, the filter 2 of below is in running order, and the filter 2 of top is in halted state.Sub-material mouth 51 is not communicated with the filter 2 of top; Fused materials gets into from the charging aperture on the filter cylinder shell 1; The feed cavity of filter 2 below getting under the effect of import reversal valve 4, fused materials are filtered through screen pack and are got into screen tube 21 inner chambers, and impurity is filtered net and removes; Fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material.
Shown in Figure 2, the filter 2 of below is in running order, and the filter 2 of top is in halted state.Sub-material mouth 51 is communicated with the filter 2 of top, and fused materials gets into from the charging aperture on the filter cylinder shell 1, the feed cavity of filter 2 below getting under the effect of import reversal valve 4; Fused materials filters through screen pack and gets into screen tube 21 inner chambers; Impurity is filtered net and removes, and fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material; The partial melting material gets into the filter 2 of top through sub-material mouth 51 simultaneously; Realize the purpose of back flush screen pack, behind the flushing certain hour, turn on the stopper 12 of the filter 2 of top, impure material promptly is discharged from.
Shown in Figure 3, operation simultaneously makes import reversal valve 4 and outlet reversal valve 5, makes the filter 2 of top in running order, and the filter 2 of below is in halted state.Sub-material mouth 51 is not communicated with the filter 2 of below, and fused materials gets into from the charging aperture on the filter cylinder shell 1, the feed cavity of filter 2 above getting under the effect of import reversal valve 4; Fused materials filters through screen pack and gets into screen tube 21 inner chambers; Impurity is filtered net and removes, and fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material; The filter 2 of removable below carries out the draping operation simultaneously.
Shown in Figure 4, the filter 2 of top is in running order, and the filter 2 of below is in halted state.Sub-material mouth 51 is communicated with the filter 2 of below, and fused materials gets into from the charging aperture on the filter cylinder shell 1, the feed cavity of filter 2 above getting under the effect of import reversal valve 4; Fused materials filters through screen pack and gets into screen tube 21 inner chambers; Impurity is filtered net and removes, and fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material; The partial melting material gets into the filter 2 of below through sub-material mouth 51 simultaneously; Realize the purpose of back flush screen pack, behind the flushing certain hour, turn on the stopper 12 of the filter 2 of below, impure material promptly is discharged from.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (5)
1. an extruder is not shut down long-acting filter with self-cleaning, comprises filter cylinder shell (1) and is arranged on the filter (2) in filter cylinder shell (1) inner chamber, and the filter cylinder shell has charging aperture and discharging opening on (1); Described filter (2) comprises screen tube (21) and the coaxial branch fluid (22) that is arranged in the screen tube (21); Have several through holes on the cylindrical shell of screen tube (21), screen tube (21) skin is coated with screen pack, it is characterized in that: parallel connection is provided with two and overlaps the filter (2) that spare wheel each other changes jobs in described filter screen shell (1) inner chamber; Has demarcation strip (3) between the two sets filtering device (2); Form feed cavity between the inwall of filter screen shell (1) and demarcation strip (3) sidewall and the screen pack, form the discharging chamber between screen tube (21) inwall and the branch fluid (22), the two ends of demarcation strip (3) are respectively feed end (31) that communicates with feed cavity and the discharge end (32) that communicates with the discharging chamber; Import reversal valve (4) is installed on the feed end (31); The import of import reversal valve (4) is communicated with charging aperture, and outlet reversal valve (5) is installed on the discharge end (32), and the outlet of outlet reversal valve (5) is communicated with discharging opening; One end of filter (2) is equipped with plug (6); Plug (6) detachably is installed in filter cylinder shell (1), and described import reversal valve (4) and outlet reversal valve (5) include reversing valve core and pedestal is installed, and pedestal is installed is installed on the filter cylinder shell (1); The external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell (1); Offer a sub-material mouth (51) on the described outlet reversal valve (5), offer discharge port (11) on the cavity of the corresponding two sets filtering device of filter cylinder shell (1) (2), discharge port (11) is gone up correspondence and is provided with the stopper (12) that removably connects.
2. extruder as claimed in claim 1 is not shut down long-acting filter with self-cleaning, it is characterized in that: offer two mutually perpendicular outlets on the described outlet reversal valve (5), described sub-material mouth (51) is positioned on the bisector of two outlets.
3. extruder as claimed in claim 1 is not shut down long-acting filter with self-cleaning, it is characterized in that: described screen tube (21) skin is coated with two-layer at least screen pack.
4. extruder as claimed in claim 1 is not shut down long-acting filter with self-cleaning; It is characterized in that: the branch fluid (22) of described filter (2) has a guiding cone (22-1); The great circle of guiding cone (22-1) is directly held with the installation of screen tube (21) inwall and is connected; The larger diameter end of guiding cone (22-1) also has a bullet (22-2) that is used for shutoff screen tube (21) end face; Have the passage that supplies fused materials entering feed cavity between bullet (22-2) and the filter cylinder shell (1), divide the smaller diameter end of fluid (22) to stretch out screen tube (21), screen tube (21) is installed with plug (6) near an end of the minor diameter of guiding cone (22-1) and is connected; Have the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone (22-1) and the plug (6), have the perforate that communicates with demarcation strip (3) top discharge end (32) on the plug (6).
5. extruder as claimed in claim 4 is not shut down long-acting filter with self-cleaning; It is characterized in that: the great circle of described guiding cone (22-1) is directly held with screen tube (21) inner thread and is removably connected, and screen tube (21) removably connects near an end and plug (6) screw thread of the minor diameter of guiding cone (22-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110186205.XA CN102320121B (en) | 2011-06-30 | 2011-06-30 | Nonstop self-cleaning long-acting filter for extruding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110186205.XA CN102320121B (en) | 2011-06-30 | 2011-06-30 | Nonstop self-cleaning long-acting filter for extruding machine |
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| Publication Number | Publication Date |
|---|---|
| CN102320121A true CN102320121A (en) | 2012-01-18 |
| CN102320121B CN102320121B (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110186205.XA Active CN102320121B (en) | 2011-06-30 | 2011-06-30 | Nonstop self-cleaning long-acting filter for extruding machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112144A (en) * | 2013-03-04 | 2013-05-22 | 舟山市安格机械有限公司 | Long-lasting bilateral screen exchange device for production of drip irrigation belt |
| CN104494106A (en) * | 2014-12-31 | 2015-04-08 | 常州市永明机械制造有限公司 | Dual-filter-element long-acting net-changing safety protection device on extruder |
| CN108582562A (en) * | 2017-12-28 | 2018-09-28 | 重庆市中塑新材料有限公司 | Centrifugal comminutor |
| CN108889058A (en) * | 2018-09-17 | 2018-11-27 | 陕西黑猫焦化股份有限公司 | Filter device for purifier back segment |
| CN112693094A (en) * | 2020-12-21 | 2021-04-23 | 魏正才 | Double-column switching type net changer |
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| DE19509059C1 (en) * | 1995-03-14 | 1996-03-14 | Wil Man Polymer Filtration Gmb | Controlled sepn. into two-stream fluid system |
| JPH08230017A (en) * | 1995-05-02 | 1996-09-10 | Shiro Tsuchiya | Screen changer for plastic extrusion molding |
| EP0875357A1 (en) * | 1997-05-02 | 1998-11-04 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Filter device for extruders and injection machines |
| CN2592366Y (en) * | 2003-01-07 | 2003-12-17 | 潘应亮 | Non-stop filter net changing apparatus for four-channel columntype extruder |
| CN201211704Y (en) * | 2008-06-02 | 2009-03-25 | 李新忠 | Filter head of plastic extrusion machine |
| CN202162992U (en) * | 2011-06-30 | 2012-03-14 | 常州市创信知识产权代理有限公司 | Long-acting self-cleaning filter without halting for extruder |
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2011
- 2011-06-30 CN CN201110186205.XA patent/CN102320121B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19509059C1 (en) * | 1995-03-14 | 1996-03-14 | Wil Man Polymer Filtration Gmb | Controlled sepn. into two-stream fluid system |
| JPH08230017A (en) * | 1995-05-02 | 1996-09-10 | Shiro Tsuchiya | Screen changer for plastic extrusion molding |
| EP0875357A1 (en) * | 1997-05-02 | 1998-11-04 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Filter device for extruders and injection machines |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112144A (en) * | 2013-03-04 | 2013-05-22 | 舟山市安格机械有限公司 | Long-lasting bilateral screen exchange device for production of drip irrigation belt |
| CN103112144B (en) * | 2013-03-04 | 2015-07-15 | 舟山市安格机械有限公司 | Long-lasting bilateral screen exchange device for production of drip irrigation belt |
| CN104494106A (en) * | 2014-12-31 | 2015-04-08 | 常州市永明机械制造有限公司 | Dual-filter-element long-acting net-changing safety protection device on extruder |
| CN108582562A (en) * | 2017-12-28 | 2018-09-28 | 重庆市中塑新材料有限公司 | Centrifugal comminutor |
| CN108889058A (en) * | 2018-09-17 | 2018-11-27 | 陕西黑猫焦化股份有限公司 | Filter device for purifier back segment |
| CN112693094A (en) * | 2020-12-21 | 2021-04-23 | 魏正才 | Double-column switching type net changer |
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| CN102320121B (en) | 2014-06-04 |
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Effective date of registration: 20180504 Address after: 401322 Chongqing Banan district fish hole hundred section gourd mouth top factory Patentee after: CHONGQING JINLANG ELECTROMECHANICAL MANUFACTURING CO., LTD. Address before: 213161 room 216, 2 building, 158 East Renmin Road, Hutang Town, Wujin District, Changzhou, Jiangsu. Patentee before: Changzhou Chuangxin Knowledge Property Agency Co.,Ltd. |