CN105082511A - Back-flushing type screen washing and changing device - Google Patents
Back-flushing type screen washing and changing device Download PDFInfo
- Publication number
- CN105082511A CN105082511A CN201510431171.4A CN201510431171A CN105082511A CN 105082511 A CN105082511 A CN 105082511A CN 201510431171 A CN201510431171 A CN 201510431171A CN 105082511 A CN105082511 A CN 105082511A
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- CN
- China
- Prior art keywords
- net
- plunger
- changing device
- hydraulic cylinder
- filter screen
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B29C48/256—Exchangeable extruder parts
-
- 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
Abstract
The invention relates to a back-flushing type screen washing and changing device which belongs to the technical field of auxiliary equipment for fiber processing. The back-flushing type screen washing and changing device comprises a plunger, distributing plates, a cutoff slide valve, a screen changer chamber body and a hydraulic cylinder, wherein two hollow chambers are symmetrically formed in the side wall of the plunger; and the distributing plate, a filter screen unit and a filter screen retainer are mounted in each hollow chamber from inside out in sequence; a melt flow channel is formed in the screen changer chamber body, and one end of the melt flow channel is an inlet while the other end of the melt flow channel is an outlet; the cutoff slide valve is arranged on the screen changer chamber body on one side of the inlet, and a back-flushing opening is formed in the cutoff slide valve. The back-flushing type screen washing and changing device is applied to the melt filtering of recycled materials of chemical fiber wastes and has the advantages of being high in filter precision and stable in material supplying.
Description
Technical field
The present invention relates to a kind of backpulsing and wash net net-changing device, belong to fiber process technical field of auxiliary equipment.
Background technology
Net-changing device is that one is arranged between screw head and cross-head, for the solid impurity in filtering liquid and foreign matter, obtains pure liquid.Existing net-changing device mostly is hydraulic control, be made up of cavity, screen pack and hydraulic package, when changing filter screen after net-changing device work a period of time, by hydraulic cylinder outputting power, sieve plate is made to move up and down location, filter mesh realizes the replacing of on-line filtration net, then is cleaned by the filter screen changed.
In production of chemical fibres, because the variation of material, equipment, technology and the switching of product variety inevitably produce waste silk.Along with the sharp increase of chemical fibre production capacity, chemical fibre waste material is also increasing.If be not used, can solid waste be formed on the one hand, or even white garbage; On the other hand, the fossil resources such as oil are non-renewable, and the chemical fiber industry as petrochemical industry downstream is needed badly and carried out recycling to this part waste material.In garbage collection, storage and transport process, meeting entrained solids impurity, if do not filtered and direct reuse, will cause the next procedure of regeneration feed, Zhu Yu regenerates spinning, directly sprays green sheet, injection moulding, bottle blowing etc. again and cannot normally carry out, and affects the quality of final products.
Routine is washed net net-changing device and is mostly only had single-column or twin columns back flush unit, cannot conveniently realize online switching, affect continuity of production process; Meanwhile, what the quantity of draping unit affected material passes through efficiency.On the other hand, usually need to select different filter mediums and combination according to the physical property of material, under the prerequisite realizing good filter effect, guarantee that melt Conveying is steadily smooth.
Based on this, make subject application.
Summary of the invention
In order to overcome, feed existing for existing net-changing device is irregular, filtering accuracy is limited, cannot according to defects such as the physical property flexible configuration filter mediums of material, the invention provides a kind of can fast, four-way online backflushing formula that is efficient, that steadily filter washes net net-changing device.
For achieving the above object, the technical scheme taked of the present invention is as follows:
Backpulsing washes net net-changing device, comprise plunger, distribution plate, closedown guiding valve, net-changing device cavity and hydraulic cylinder, plunger is symmetrically arranged with two cavitys on its sidewall, be provided with distribution plate, filter screen group and screen retainer from inside to outside successively in cavity, described distribution plate is hemispherical dome structure, and its sphere is towards plunger body, another side is then provided with filter screen group, described filter screen group is made up of skeleton and meticulous net, and skeleton is positioned at meticulous net outside, is fixed outside filter screen group by screen retainer; Plunger at one end loads in net-changing device cavity, and the other end is then connected with the position bar of hydraulic cylinder; Be provided with melt flow channel in described net-changing device cavity, the cavity connects of this melt flow channel and plunger, this melt flow channel runs through net-changing device cavity and arranges, and its one end is entrance, and the other end is outlet; The net-changing device cavity of inlet side is provided with closedown guiding valve, this closedown guiding valve is provided with backwash mouth, the cavity connects of this backwash mouth and plunger; Distribution plate or screen retainer are provided with pressure sensor, this pressure sensor and hydraulic cylinder with close guiding valve and be connected, to realize the transmission of pressure signal.
Further, as preferably:
In described filter screen group, the precision of meticulous net is 10-100 micron, and meticulous net is provided with two-layer.
Lower wall is provided with heating plate to described net-changing device cavity.
Described melt flow channel is provided with two, and with net-changing device chamber central for symmetry axis is arranged in the inner.
Described plunger is provided with two, these two plungers with the center line of net-changing device cavity for symmetry axis is set down at grade.
Described hydraulic cylinder is provided with one, and this hydraulic cylinder is provided with two position bars, and each position pole pair answers a plunger.
Described hydraulic cylinder is provided with two, and each hydraulic cylinder arranges a position bar, and each position pole pair answers a plunger.
Apply the present invention to the melt filtration of the reclaiming material such as chemical fiber waste filament, first distribution plate, filter screen group and screen retainer are loaded in the cavity of plunger successively, and after being fixed with screen retainer, the one end of plunger being equipped with filter screen group loads net-changing device cavity, and its cavity and melt flow channel are overlapped, the other end of plunger is then connected with the position bar of hydraulic cylinder.
Under normal circumstances, melt enters melt flow channel from entrance, and after being filtered by filter screen group after distribution plate distributes, is flowed out, namely complete normal melt filtration and supply work by the outlet of the net-changing device cavity other end, along with the carrying out of filtering, impurity in filter screen group builds up, melt pressure rises thereupon, when pressure sensor detects that melt pressure reaches setting value, this signal sends by pressure sensor, hydraulic valve promotes plunger outward by position bar and moves, entrance one end of the parts such as the filter screen group corresponding to this plunger and melt flow channel disconnects, backwash runner corresponding to backwash mouth is then connected with the melt flow channel corresponding to exit end, sub-fraction melt in exit end melt flow channel flows backwards, the impurity accumulated in filter screen group is taken out of, when the pressure in filter screen group is lower than setting value, this plunger starts move backward and reset under the effect of hydraulic cylinder, proceed normal melt filtration and conveying.So just achieve and once automatically clean filter screen process, realize the object of cleaning filter screen, backwash efficiency is high, and avoid producing and pause, Increasing Production and Energy Saving, saves production cost; Significantly reduce draping frequency, avoid frequent draping.
When backwash cannot realize the removing of impurity, promotion plunger outward is moved to filter screen and spills beyond net-changing device cavity by hydraulic cylinder, now, remove screen retainer, filter screen can be taken off, this filter screen can again recycle after degree of depth cleaning, greatly extends draping interval time; Because plunger is provided with two, these two plungers are symmetrical arranged the symmetry axis both sides with net-changing device cavity, one can be adopted to change one and use pattern, in draping and backwash process, stream pressure is unchanged, flow speed stability, without stopping instantaneously, without melt leakage, can long-time continuous produce.
Accompanying drawing explanation
Fig. 1 is the structural representation of plunger in the present invention;
Fig. 2 is the front view of the present invention when normally using;
Fig. 3 is the side view of the present invention when normally using;
Fig. 4 is the top view of the present invention when normally using;
Fig. 5 is the top view of a kind of backwash state of the present invention;
Fig. 6 is the top view of the another kind of backwash state of the present invention.
Number in the figure: 1. plunger; 1a. plunger one; 1b. plunger two; 11. cavitys one; 12. cavitys two; 2. distribution plate; 3. filter screen group; 31. skeletons; 32. meticulous filter screens; 4. screen retainer; 5. close guiding valve; 51. backwash mouths; 52. backwash runners; 6. net-changing device cavity; 61. entrances; 62. melt flow channel one; 63. melt flow channel two; 64. outlets; 7. heating plate; 8. hydraulic cylinder; 8a. hydraulic cylinder one; 8b. hydraulic cylinder two; 81. position bars.
Detailed description of the invention
Embodiment 1
The present embodiment backpulsing washes net net-changing device, composition graphs 2, Fig. 3 and Fig. 4, comprise plunger 1, distribution plate 2, close guiding valve 5, net-changing device cavity 6 and hydraulic cylinder 8, composition graphs 1, plunger 1 is symmetrically arranged with two cavitys on its sidewall, be called cavity 1 and cavity 2 12, distribution plate 2 is respectively charged in cavity 1 and cavity 2 12, filter screen group 3 and screen retainer 4, distribution plate 2 is wherein hemispherical dome structure, and its sphere is inner towards plunger 1, another side is then provided with filter screen group 3, filter screen group 3 is made up of two-layer skeleton 31 and two layers of fine net 32, two layers of fine net 32 sets gradually, its precision is 100 microns, two-layer skeleton 31 is positioned at the left and right sides of meticulous net 31, fixed by screen retainer 4 outside filter screen group 3, one end that plunger 1 is provided with cavity loads in net-changing device cavity 6, and the other end is then connected with the position bar 81 of hydraulic cylinder 8, melt flow channel is provided with in net-changing device cavity 6, the cavity connects of this melt flow channel and plunger 1, this melt flow channel runs through net-changing device cavity and arranges, its one end is entrance 61, the other end is outlet 64, and in the present embodiment, melt flow channel is made up of the good melt flow channel 2 63 of symmetrically arranged melt flow channel 1, melt flow channel 1 and melt flow channel 2 63 are symmetrical arranged with entrance 61 place center line, and both ends then converge at outlet 64 place, the net-changing device cavity 6 of entrance 61 side is provided with and closes guiding valve 5, this closedown guiding valve 5 is provided with backwash mouth 51, this backwash mouth 51 is by the cavity connects of backwash runner 52 with plunger 1, distribution plate 2 is provided with pressure sensor, this pressure sensor and hydraulic cylinder 8 with close guiding valve 5 and be connected, to realize the transmission of pressure signal.In the present embodiment, plunger 1 is provided with two, be respectively plunger one 1a and plunger two 1b, plunger two 1b is positioned at immediately below plunger one 1a, and with the center line of net-changing device cavity 6 for symmetry axis is symmetrical arranged, the corresponding hydraulic cylinder 8 of each plunger 1, the hydraulic cylinder that wherein plunger one 1a is corresponding is called hydraulic cylinder one 8a, the hydraulic cylinder that plunger two 1b is corresponding is called hydraulic cylinder two 8b, and corresponding each hydraulic cylinder 8 arranges a position bar 81, the corresponding plunger 1 of each position bar 81.
Under normal circumstances, composition graphs 2-4, melt enters melt flow channel 1 and melt flow channel 2 63 respectively from entrance 61, and filtered by filter screen group 3 after distribution plate 2 distributes, melt first carries out coarse filtration by skeleton 31, then after two layers of fine filter screen 32 fine filtering, then after one skeleton 31, flowed out by the outlet 64 of net-changing device cavity 6 other end, namely complete normal melt filtration and supply work, along with the carrying out of filtering, impurity in filter screen group 3 builds up, melt pressure rises thereupon, when the melt pressure that pressure sensor detects on plunger one 1a reaches setting value, composition graphs 5, this signal sends by pressure sensor, hydraulic valve one 8a promotes plunger one 1a outwards movement by position bar, filter screen group 3 parts such as grade corresponding on the left of plunger one 1a and melt flow channel 1 disconnect, and be communicated with the backwash runner 52 corresponding to backwash mouth 51, the sub-fraction melt then exported in 64 one end melt flow channel flows backwards, the impurity accumulated in filter screen group 3 is taken out of, when the pressure in filter screen group 3 is lower than setting value, plunger one 1a moves backward and resets under the effect of hydraulic cylinder one 8a, backwash runner 52 disconnects with plunger one 1a and being communicated with, plunger one 1a is communicated with melt flow channel 1, and proceed normal melt filtration and conveying, same reason, when filter screen group 3 pressure on the right side of plunger one 1a exceedes setting value, composition graphs 6, plunger one 1a moves backward, and makes the backwash flow passage on right side filter screen group and right side, carries out the backwash of right side filter screen group.
When backwash cannot realize the removing of impurity, promotion plunger 1 is outwards moved to filter screen group 3 and spills beyond net-changing device cavity 6 by hydraulic cylinder 8, now, remove screen retainer 4, filter screen group 3 can be taken off, this filter screen group 3 can again recycle after degree of depth cleaning, greatly extends draping interval time; Because plunger 1 is provided with two, these two plungers 1 are symmetrical arranged the symmetry axis both sides with net-changing device cavity 6, one can be adopted to change one and use pattern, in draping and backwash process, stream pressure is unchanged, flow speed stability, without stopping instantaneously, without melt leakage, can long-time continuous produce; Once automatically cleaning filter screen process, can realize the object of cleaning filter screen, backwash efficiency is high, and avoid producing and pause, Increasing Production and Energy Saving, saves production cost; Significantly reduce draping frequency, avoid frequent draping.
Embodiment 2
The present embodiment is identical with operation principle with the setting of embodiment 1, and difference is: the outer wall of net-changing device cavity 6 is provided with one deck heating plate 7; Hydraulic cylinder 8 is provided with one, and this hydraulic cylinder 8 is provided with two position bars, the corresponding plunger 1 of each position bar 81.The setting of heating plate 7 guarantees that melt keeps constant temperature in conveying and filter process, and same hydraulic cylinder 8 can control the state of two plungers.
Above content is the further description done provided technical scheme in conjunction with the preferred embodiment of the present invention; can not assert that the present invention specifically implements to be confined to these explanations above-mentioned; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. backpulsing washes net net-changing device, it is characterized in that: comprise plunger, distribution plate, closedown guiding valve, net-changing device cavity and hydraulic cylinder, plunger is symmetrically arranged with two cavitys on its sidewall, in cavity, distribution plate, filter screen group and screen retainer are installed from inside to outside successively, described distribution plate is hemispherical dome structure, and its sphere is towards plunger body, another side is then provided with filter screen group, described filter screen group is made up of skeleton and meticulous net, skeleton is positioned at meticulous net outside, is fixed outside filter screen group by screen retainer; Plunger at one end loads in net-changing device cavity, and the other end is then connected with the position bar of hydraulic cylinder; Be provided with melt flow channel in described net-changing device cavity, the cavity connects of this melt flow channel and plunger, this melt flow channel runs through net-changing device cavity and arranges, and its one end is entrance, and the other end is outlet; The net-changing device cavity of inlet side is provided with closedown guiding valve, this closedown guiding valve is provided with backwash mouth, the cavity connects of this backwash mouth and plunger; Distribution plate or screen retainer are provided with pressure sensor, and this pressure sensor is connected with hydraulic cylinder, to realize the transmission of pressure signal.
2. backpulsing as claimed in claim 1 washes net net-changing device, and it is characterized in that: in described filter screen group, meticulous net is provided with two-layer, the precision of every layer of meticulous net is 10-100 micron.
3. backpulsing as claimed in claim 1 washes net net-changing device, it is characterized in that: described net-changing device containment portion is provided with heating plate.
4. backpulsing as claimed in claim 1 washes net net-changing device, it is characterized in that: described melt flow channel is provided with two, and with net-changing device chamber central for symmetry axis is arranged in the inner.
5. backpulsing as claimed in claim 1 washes net net-changing device, it is characterized in that: described plunger comprises plunger one and plunger two, and plunger two is positioned at immediately below plunger one, and plunger one and plunger two with the center line of net-changing device cavity for symmetry axis is symmetrical arranged.
6. backpulsing as claimed in claim 5 washes net net-changing device, and it is characterized in that: described hydraulic cylinder is provided with one, this hydraulic cylinder is provided with two position bars, and each position pole pair answers a plunger.
7. backpulsing as claimed in claim 5 washes net net-changing device, and it is characterized in that: described hydraulic cylinder is provided with two, each hydraulic cylinder arranges a position bar, and each position pole pair answers a plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431171.4A CN105082511A (en) | 2015-07-21 | 2015-07-21 | Back-flushing type screen washing and changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431171.4A CN105082511A (en) | 2015-07-21 | 2015-07-21 | Back-flushing type screen washing and changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105082511A true CN105082511A (en) | 2015-11-25 |
Family
ID=54564261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510431171.4A Pending CN105082511A (en) | 2015-07-21 | 2015-07-21 | Back-flushing type screen washing and changing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105082511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159791A (en) * | 2017-12-27 | 2018-06-15 | 邯郸宏大化纤机械有限公司 | A kind of driving of hydraulic cylinder can back flush online plunger type screen changer |
| CN109778326A (en) * | 2019-01-21 | 2019-05-21 | 浙江绿宇环保股份有限公司 | Polyester waste material regenerates directly spinning filament spun-bonded needle punched non-woven fabrics production technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701118A (en) * | 1985-07-03 | 1987-10-20 | Kreyenborg Verwaltungen Und Beteiligungen Kg | Apparatus for filtering plasticized materials in extruders |
| CN1772460A (en) * | 2005-08-02 | 2006-05-17 | 梁斌 | Column type back wash net changing device |
| US20080217255A1 (en) * | 2004-08-19 | 2008-09-11 | Harald Pohl | Methods for Filtering a Fluid and an Apparatus and Filter Apparatus for Performing Said Method |
| US20110017681A1 (en) * | 2009-05-26 | 2011-01-27 | Bibey Joshua A | Filtration apparatus for filtering a fluid and methods of using the same |
| CN204914519U (en) * | 2015-07-21 | 2015-12-30 | 浙江绿宇环保有限公司 | Backpulsing is washed net and is traded wire stitcher |
-
2015
- 2015-07-21 CN CN201510431171.4A patent/CN105082511A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701118A (en) * | 1985-07-03 | 1987-10-20 | Kreyenborg Verwaltungen Und Beteiligungen Kg | Apparatus for filtering plasticized materials in extruders |
| US20080217255A1 (en) * | 2004-08-19 | 2008-09-11 | Harald Pohl | Methods for Filtering a Fluid and an Apparatus and Filter Apparatus for Performing Said Method |
| CN1772460A (en) * | 2005-08-02 | 2006-05-17 | 梁斌 | Column type back wash net changing device |
| US20110017681A1 (en) * | 2009-05-26 | 2011-01-27 | Bibey Joshua A | Filtration apparatus for filtering a fluid and methods of using the same |
| CN204914519U (en) * | 2015-07-21 | 2015-12-30 | 浙江绿宇环保有限公司 | Backpulsing is washed net and is traded wire stitcher |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108159791A (en) * | 2017-12-27 | 2018-06-15 | 邯郸宏大化纤机械有限公司 | A kind of driving of hydraulic cylinder can back flush online plunger type screen changer |
| CN109778326A (en) * | 2019-01-21 | 2019-05-21 | 浙江绿宇环保股份有限公司 | Polyester waste material regenerates directly spinning filament spun-bonded needle punched non-woven fabrics production technology |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 312000 Zhejiang city of Shaoxing Province Wang robe River Road No. 6 Applicant after: Zhejiang Oasis Environmental Limited by Share Ltd Address before: 312000 Zhejiang city of Shaoxing province Shaoxing robe Jiang Wang Road No. 6 Applicant before: ZHEJIANG LYUYU ENVIRONMENTAL PROTECTION CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |