CN104874292A - Anti-pollution and easy-to-wash hollow fiber membrane component and preparation method thereof - Google Patents
Anti-pollution and easy-to-wash hollow fiber membrane component and preparation method thereof Download PDFInfo
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- CN104874292A CN104874292A CN201510248688.XA CN201510248688A CN104874292A CN 104874292 A CN104874292 A CN 104874292A CN 201510248688 A CN201510248688 A CN 201510248688A CN 104874292 A CN104874292 A CN 104874292A
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Abstract
The invention relates to the technical filed of water treatment and particularly discloses an anti-pollution and easy-to-wash hollow fiber membrane component and the preparation method thereof. The component comprises an upper end cover, a shell and a membrane core, wherein the membrane is arranged in the shell, the upper end cover, the shell and the membrane are hermetically and dismountably connected and hollow fiber membrane yarns are arranged in the membrane core in a U shape. The invention further discloses the preparation method of the hollow fiber membrane component. According to the anti-pollution and easy-to-wash hollow fiber membrane component and the preparation method thereof, as the upper end cover, the membrane core and the shell are dismountably connected, the membrane core can be conveniently washed and replaced; the service cycle of hollow fibers is prolonged and the use cost is reduced; through the special arrangement of a membrane box distributor, a membrane yarn support body, a membrane yarn distributor and an aeration pipe, not only are the membrane yarns arrayed in order and not intersected and intertwined, and also the washing and cleaning effect can be optimal, the component can be conveniently dismounted and the effect of easiness in washing and pollution prevention can be reached to a maximum extent.
Description
Technical field
The present invention relates to water-treatment technology field, particularly relate to a kind of antipollution, the hollow fiber film assembly of easy cleaning and preparation method.
Background technology
Filling area is large owing to having for hollow-fibre membrane, self supporting structure and the feature such as with low cost, has been widely used in the field such as pretreatment of surface water quality purification, bi-membrane method technique.
Very easily pollute hollow-fibre membrane because raw water quality contains a large amount of suspension, common way strengthens pretreatment measure (such as adopting quartz filter) to reduce the pollution of hollow-fibre membrane, extends its service life.
In addition, employing is also had to improve the method for membrane module internal physical structure to reduce the pollution of hollow-fibre membrane.As: application number 201210254283.3 discloses a kind of column type hollow fiber membrane modular, this patent adopts and arranges multiple air water water conservancy diversion through hole at water inlet end, by improving the uniformity that air water is washed, reducing the method at cleaning dead angle as far as possible, improving the antifouling property of hollow fiber film assembly.Application number 201010556829.1 patent discloses the method preparing free end hollow fiber film assembly, because one end adopts resin-encapsulated, every root hollow fiber film thread of the other end adopts the packaging technology of single encapsulation, wishes that in the course of work, film silk can freely swing to reduce the pollution of film.But the intensity of mode to film silk proposes higher requirement, otherwise the phenomenon very easily occurring film silk in disorder in the course of the work and be wound around, exacerbate the pollution of membrane module.Application number 201010131633.8 patent discloses a kind of external pressure hollow fiber membrane component of antipollution structure, adopt U-shaped film silk hollow fiber film assembly, if but the hollow fiber film thread in assembly stretch tight too tight, then because tunica fibrosa silk in running can not effectively swing, pollutant is very easily deposited between hollow fiber film thread and film silk, is unfavorable for the resistant to pollution raising of hollow-fibre membrane; If hollow fiber film thread is excessively loose, along with current are to the hydraulic blow of hollow fiber film thread in running, hollow fiber film thread very easily comes off from supporter, occurs the phenomenon of the in disorder winding of film silk.
Summary of the invention
For prior art Problems existing, the invention provides a kind of antipollution effect good, be not easily wound around, be easy to cleaned and changed hollow fiber film assembly and preparation method.
For achieving the above object, the present invention adopts following technical scheme:
The hollow fiber film assembly of a kind of antipollution, easy cleaning, comprise upper end cover, housing, film core, film core is placed in housing, and upper end cover and housing, film core are tightly connected, the U-shaped setting of described film in-core hollow fiber film thread, upper end cover, housing, film core are for removably connecting.Hollow fiber film thread adopts U-shaped mounting means, in normal course of operation, by from the normal air purge of membrane module bottom, and can the pollutant on washing hollow-fiber film silk surface up hill and dale.Upper end cover, film core and housing critical piece are by the sealing of O type circle front, end cap, film core and housing are connected by anchor ear, the design of this demountable structure, for suspension or the more occasion of other impurity, after membrane module runs a period of time, independent easily film core can be taken out in assembly, carry out off-line cleaning, reach the effect of easy to clean, if there is the phenomenon of hollow-fibre membrane breakage in running, then only need changing film core, without the need to being changed by whole assembly, decreasing the replacement cost of membrane module.
As preferably, described film in-core comprises bellows distributor, film silk supporter, and the free end of U-shaped film silk is encapsulated in bellows distributor, and film silk support body supports is inside the U-shaped end of film silk.By film silk support body supports inside the U-shaped end of film silk, hollow fiber film thread can be prevented excessively loose, along with current are to the hydraulic blow of hollow fiber film thread in running, there is the phenomenon of the in disorder winding of film silk, also can ensure that hollow fiber film thread effectively swings simultaneously, remove the pollutant be deposited between hollow fiber film thread.
As preferably, described bellows distributor cross section is separated into some fan-shaped, dense water water distributor, central support tube is connected successively under it, film silk supporter is fan-shapedly be connected to central support tube lower end surrounding, the position of each film silk supporter is corresponding with the mesophase spherule of each covering of the fan part of bellows distributor, film silk supporter walked around symmetrically by film silk, and two free ends are encapsulated in corresponding bellows distributor covering of the fan.Such structure not only makes marshalling between film silk, can not cross winding mutually between film silk and film silk, and decrease position, housing inner membrance silk dead angle when filtering operation, coordinate the sewage draining exit that housing lower end is arranged, easily by membrane module surface and the contaminant exclusion of shell internal deposition, the cleaning frequency of film can be extended.When the cleaning of film silk or replacing, by by film silk from slippage the film silk supporter of bottom, can be placed in service sink and carry out simple cleaning and just the suspension of deposition can be washed out, afterwards film silk is enclosed within easily on film silk supporter, thus easily form a complete film core, very convenient.
As preferably, described film silk supporter termination arranges film silk blend stop downwards, and film silk blend stop and film silk supporter removably connect.The setting of film silk blend stop can prevent film silk in running, and particularly in flushing (comprising air purge) process, the in disorder phenomenon causing damaging film silk of film silk, appears in landing from film silk supporter.Detachably arrange and facilitate taking-up to rinse.
As preferably, also comprise film silk distributor, described film silk distributor arranges distribution bar, distributing bar is fan-shaped connection with central support tube, central support tube is corresponding with the covering of the fan position of the covering of the fan position that distribution bar is formed and bellows distributor, film silk distributor is arranged between bellows distributor and film silk supporter, and after film silk supporter walked around symmetrically by film silk, two free ends enter bellows distributor covering of the fan again through the covering of the fan of film silk distributor and encapsulate.Arranging of film silk distributor can ensure film silk ordered arrangement further, and preventing pollution thing deposits between film silk.
As preferably, for removably connecting between the distribution bar of described film silk distributor and central support tube.Be convenient to dismantle rear taking-up film silk rinse.
As preferably, be provided with aerator in described water inlet end housing, aerator adopts boring aeration, and the cross section of aeration tube is separated into some fan-shaped, and every root aeration tube position is corresponding with the position of each film silk supporter.Such aeration tube arranges and can ensure to greatest extent to rinse pointedly each group of film silk, reaches best developing result, film silk can not be disarrayed winding again.
As preferably, described hollow fiber film thread material is polypropylene, polyethylene, Kynoar, polyvinyl chloride, polysulfones, polyether sulfone.The all applicable this structure of hollow fiber film thread of multiple material.
A preparation method for the hollow fiber film assembly of antipollution, easy cleaning, is characterized in that: comprise the steps:
1) bonding dense water water distributor, central support tube successively on the downside of bellows distributor, central support tube lower end outside is fan-shaped bonding film silk supporter;
2) a branch of hollow fiber film thread is curved U-shaped, after walking around film silk supporter symmetrically, two free ends enter bellows distributor covering of the fan to carry out encapsulating, solidifying, and other bundle hollow fiber film threads are carried out aforesaid operations, one by one until all film silks are encapsulated in each covering of the fan of bellows distributor;
3) end face cuts glue, leak detection;
4) aeration tube is carried out bonding with bottom end cover;
5) housing put into by film core, covers upper end cover, with sealing ring sealing, and carries out banding with anchor ear.
As preferably, the distribution bar of the film silk distributor that removably connects in the middle part of step 1) central support tube, step 2) film silk two free end enter bellows distributor covering of the fan again through the covering of the fan of film silk distributor and encapsulate.
The hollow fiber film assembly of a kind of antipollution of the present invention, easy cleaning and preparation method, by removably connecting between upper end cover, film core and housing, can easily film core be cleaned and be changed, extend the life cycle of hollow-fibre membrane, reduce use cost; By the special setting of bellows distributor, film silk supporter, film silk distributor, aeration tube, not only make marshalling between film silk, can not cross winding mutually between film silk and film silk, and be convenient to rinse and clean reach best effect, can also dismantle easily, reach easy cleaning, resistant to pollution effect to greatest extent.
Accompanying drawing explanation
Fig. 1 is the structural representation of hollow fiber film assembly described in the embodiment of the present invention.
Fig. 2 is the syndeton schematic diagram of upper end cover in Fig. 1, film core.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B-B sectional view of Fig. 1.
Fig. 5 is the C-C sectional view of Fig. 1.
Fig. 6 is the D-D sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with Fig. 1-6, the present invention is described further with detailed description of the invention.
The hollow fiber film assembly of a kind of antipollution, easy cleaning, as shown in Figure 1, 2, comprise upper end cover 1, housing 2, film core 3, film core 3 is placed in housing 2, and upper end cover 1 covers thereon, and concentrated water spout 16 is arranged on above upper end cover 1 along housing 2 axial direction, produce the side that the mouth of a river 17 is arranged on upper end cover 1, upper end cover 1 and housing 2, film core 3 are tightly connected, and the U-shaped setting of hollow fiber film thread 4 in film core 3, upper end cover 1, housing 2, film core 3 are for removably connecting.Wherein, upper end cover 1, film core 3 and housing 2 critical piece, by the sealing of O RunddichtringO 14 front, are connected by anchor ear 15 banding between upper end cover 1, film core 3 and housing 2.
Comprise bellows distributor 5, film silk supporter 6 in film core 3, the free end of U-shaped film silk 4 is encapsulated in bellows distributor 5, and film silk supporter 6 is supported on inside film silk 4U type end.
As shown in Figure 3, bellows distributor 5 sectional area is separated into some fan-shaped, as shown in accompanying drawing 1,2, dense water water distributor 7, central support tube 8 is connected successively under it, as shown in accompanying drawing 1,5, film silk supporter 6 is connected to central support tube 8 lower end surrounding in fan-shaped, and the position of each film silk supporter 6 is corresponding with the mesophase spherule of each covering of the fan part of bellows distributor 5, film silk 4 is walked around film silk supporter 6, two free end symmetrically and is encapsulated in corresponding bellows distributor 5 covering of the fan.Film silk supporter 6 termination arranges film silk blend stop 9 downwards, and film silk blend stop 9 and film silk supporter 6 removably connect.
As shown in Figure 4, for the profile of film silk distributor 10, film silk distributor 10 arranges and distributes bar 12, distribute bar 12 to be connected in fan-shaped with central support tube 8, central support tube 8 is corresponding with the covering of the fan position of the covering of the fan position that distribution bar 12 is formed and bellows distributor 5, film silk distributor 10 is arranged between bellows distributor 5 and film silk supporter 6, and after film silk supporter 6 walked around symmetrically by film silk 4, two free ends enter bellows distributor 5 covering of the fan again through the covering of the fan of film silk distributor 10 and encapsulate.
For removably connecting between the distribution bar 12 of described film silk distributor 10 and central support tube 8.
Be provided with aerator in water inlet end housing 2, aerator adopts boring aeration, and as shown in Figure 6, the cross section of aeration tube 13 is separated into some fan-shaped, and every root aeration tube 13 position is corresponding with the position of each film silk supporter 6.Aeration tube 13 is bonded on bottom end cover 18, and air purge mouth 19 is arranged on below bottom end cover 18 along housing 2 axial direction, and water inlet 20 is arranged on the side of bottom end cover 18, is connected between bottom end cover 18, housing 2 by anchor ear 15 banding.
Hollow fiber film thread 4 material is polypropylene, polyethylene, Kynoar, polyvinyl chloride, polysulfones, polyether sulfone.
A preparation method for the hollow fiber film assembly of antipollution, easy cleaning, is characterized in that: comprise the steps:
1) bonding dense water water distributor 7, central support tube 8 successively on the downside of bellows distributor 5, central support tube 8 lower end outside is fan-shaped bonding film silk supporter 6, the distribution bar 12 of the film silk distributor 10 that removably connects in the middle part of central support tube 8;
2) a branch of hollow fiber film thread 4 is curved U-shaped, after walking around film silk supporter 6 symmetrically, two free ends enter bellows distributor 5 covering of the fan again through the covering of the fan of film silk distributor 10 to carry out encapsulating, solidifying, other bundle hollow fiber film threads 4 are carried out aforesaid operations, one by one until all film silks 4 are encapsulated in each covering of the fan of bellows distributor 5;
3) end face cuts glue, leak detection;
4) aeration tube 13 is carried out bonding with bottom end cover 18;
5) housing 2 put into by film core 3, covers upper end cover 1, seals with sealing ring 14, and carries out banding with anchor ear 15.
Hollow fiber film thread produces water end (W.E.) encapsulation and adopts polyurethane or epoxy resin.
the method of operation:
For alleviating the operating load of membrane module, the mode can cleaned according to normal work, air purge, backwash and forward.
During normal work: former water enters membrane module bottom from water inlet 20, dense water is after overrich water water distributor 7 is collected, and discharged by membrane module concentrated water spout 16, reach the object of cross-flow filtration, the concentration polarization phenomenon on tube reducing film surface, avoids the severe contamination of film.Under pressure, partial raw water, after the filter bores on hollow-fibre membrane 4 wall is filtered, enters hollow fiber cavity, gets rid of, obtain filtered fluid eventually through the product mouth of a river 17.
Air purge: during air purge, compressed air or blower fan are entered by air purge mouth 19, by aeration tube 13, being distributed in gas uniform bottom film silk 4, thus the effect that the gas-liquid two-phase strengthening film silk 4 is washed.Under the effect of gas-liquid two-phase, effective gas scouring is carried out to film silk 4, and get rid of gas from concentrated water spout 16.Owing to adopting the connected mode of U-shaped end, hollow fiber film thread 4 effectively can swing in gas-liquid two-phase, thus reaches the object removing film surface contaminant.
Backwash: after air purge, carries out backwash to film silk 4, and backwash water utilizes the product water of this assembly.Backwash water enters film silk 4 inner chamber from the product mouth of a river 17, is gone out by the outer surface pollutant of hollow-fibre membrane 4, get rid of from the floss hole (i.e. water inlet 20) of bottom through the filter course of doughnut.
Just wash: after backwash, utilize former water to carry out forward flushing to film silk 4.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention, all equivalences done according to the content of the application's the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (10)
1. the hollow fiber film assembly of an antipollution, easy cleaning, comprise upper end cover (1), housing (2), film core (3), film core (3) is placed in housing (2), upper end cover (1) and housing (2), film core (3) are tightly connected, it is characterized in that: interior hollow fiber film thread (4) the U-shaped setting of described film core (3), upper end cover (1), housing (2), film core (3) are for removably connecting.
2. the hollow fiber film assembly of a kind of antipollution according to claim 1, easy cleaning, it is characterized in that: in described film core (3), comprise bellows distributor (5), film silk supporter (6), the free end of U-shaped film silk (4) is encapsulated in bellows distributor (5), and film silk supporter (6) is supported on inside film silk (4) U-shaped end.
3. a kind of antipollution according to claim 2, the hollow fiber film assembly of easy cleaning, it is characterized in that: described bellows distributor (5) cross section is separated into some fan-shaped, dense water water distributor (7) is connected successively under it, central support tube (8), film silk supporter (6) is connected to central support tube (8) lower end surrounding in fan-shaped, the position of each film silk supporter (6) is corresponding with the mesophase spherule of bellows distributor (5) each covering of the fan part, film silk supporter (6) walked around symmetrically by film silk (4), two free ends are encapsulated in corresponding bellows distributor (5) covering of the fan.
4. the hollow fiber film assembly of a kind of antipollution according to claim 3, easy cleaning, is characterized in that: described film silk supporter (6) termination arranges film silk blend stop (9) downwards, and film silk blend stop (9) and film silk supporter (6) removably connect.
5. a kind of antipollution according to claim 4, the hollow fiber film assembly of easy cleaning, it is characterized in that: also comprise film silk distributor (10), described film silk distributor (10) arranges and distributes bar (12), distribute bar (12) to be connected in fan-shaped with central support tube (8), central support tube (8) is corresponding with the covering of the fan position of the covering of the fan position that distribution bar (12) is formed and bellows distributor (5), film silk distributor (10) is arranged between bellows distributor (5) and film silk supporter (6), after film silk supporter (6) walked around symmetrically by film silk (4), two free ends enter bellows distributor (5) covering of the fan again through the covering of the fan of film silk distributor (10) and encapsulate.
6. the hollow fiber film assembly of a kind of antipollution according to claim 5, easy cleaning, is characterized in that: for removably connecting between the distribution bar (12) of described film silk distributor (10) and central support tube (8).
7. the hollow fiber film assembly of a kind of antipollution according to claim 3, easy cleaning, it is characterized in that: in described water inlet end housing (2), be provided with aerator, aerator adopts boring aeration, the cross section of aeration tube (13) is separated into some fan-shaped, and every root aeration tube (13) position is corresponding with the position of each film silk supporter (6).
8. the hollow fiber film assembly of a kind of antipollution according to claim 1, easy cleaning, is characterized in that: described hollow fiber film thread (4) material is polypropylene, polyethylene, Kynoar, polyvinyl chloride, polysulfones, polyether sulfone.
9. a preparation method for the hollow fiber film assembly of antipollution, easy cleaning, is characterized in that: comprise the steps:
1) bonding dense water water distributor, central support tube successively on the downside of bellows distributor, central support tube lower end outside is fan-shaped bonding film silk supporter;
2) a branch of hollow fiber film thread is curved U-shaped, after walking around film silk supporter symmetrically, two free ends enter bellows distributor covering of the fan to carry out encapsulating, solidifying, and other bundle hollow fiber film threads are carried out aforesaid operations, one by one until all film silks are encapsulated in each covering of the fan of bellows distributor;
3) end face cuts glue, leak detection;
4) aeration tube is carried out bonding with bottom end cover;
5) housing put into by film core, covers upper end cover, with sealing ring sealing, and carries out banding with anchor ear.
10. the preparation method of the hollow fiber film assembly of a kind of antipollution according to claim 9, easy cleaning, it is characterized in that: the distribution bar of the film silk distributor that removably connects in the middle part of step 1) central support tube, step 2) film silk two free end enter bellows distributor covering of the fan again through the covering of the fan of film silk distributor and encapsulate.
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Cited By (5)
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| CN106621843A (en) * | 2015-11-04 | 2017-05-10 | 宜兴市中碳科技有限公司 | Carbon fiber super-thick treatment membrane |
| CN109574148A (en) * | 2018-12-28 | 2019-04-05 | 广州市世来至福科技有限公司 | Water purification filter device and method |
| CN111359444A (en) * | 2018-12-26 | 2020-07-03 | 宁波方太厨具有限公司 | Hollow fiber membrane filter element and packaging method thereof |
| CN111375313A (en) * | 2018-12-28 | 2020-07-07 | 中煤（北京）环保工程有限公司 | Filtration apparatus and filtration method |
| CN112619425A (en) * | 2020-12-18 | 2021-04-09 | 武汉艾科滤膜技术有限公司 | Multi-center-tube hollow fiber membrane module |
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