A kind of curtain type film assembly and its casting methodTechnical field
The present invention relates to technical field of sewage, and in particular to a kind of curtain type film assembly and its casting method.
Background technology
China is the country of a serious water shortage, and water resource of per capita is only the 1/4 of world's per capita ownership.Current ChinaThe regeneration rate of trade effluent is only 6%, and well below developed country's level, the reclamation rate of municipal wastewater is lower.Membrane technology is madeFor the interdisciplinary new technique that the sixties in last century grow up, the material after its energy-efficient, environment friendly and pollution-free, filtration can be straightTake back with etc. good characteristics so as at home and abroad every field obtains extensive popularization and application.
In the application for processing sewage, often membrane technology is combined with microbial fermentation technology, form a kind of new, heightThe sewage disposal technology of effect, referred to as membrane bioreactor (MBR).The hybrid technology has at home and abroad obtained very high concernDegree, and launch the gesture for developing rapidly.In MBR applications, being achieved in that for membrane technology be immersed in liquid with membrane module, by pipeRoad connects and self prime pump is will transmit through in the form of material extraction.The membrane module is generally divided into two classes, immersion curtain type membraneComponent and immersion column-type film components.In use, curtain type film assembly is because being realized online clearly by installing aerating systemWash, and the mode of offline cleaning, deposition of the polluter on film surface is reduced, the service life of film is improved and extensively shouldWith.
In actual applications, the deposition and on-line cleaning of sludge and offline cleaning can all cause the film silk motion of membrane module to addIt is acute.Under aeration over a long time and washing and cleaning operation, the fatigue resistance of film silk is gradually reduced, and finally results in fracture of wire.The end of membrane moduleAt portion, i.e. ebonite and flexible glue embedding, fracture of wire phenomenon is most also easy to produce, affects membrane module performance, severe patient to affect the stability of MBR.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to solving ebonite present in current curtain type membrane hollow fiber film assembly casting cycle climbs silkCause what flexible glue declined to the protective value of film silk, and ebonite climbs that a degree is too high, flexible glue enters glue and trickles uneven problem, so as toIncrease the fatigue resistance and film silk of film silk root and the cementability of glue.
(2) technical scheme
For achieving the above object, the present invention provides a kind of casting method of curtain type film assembly, and the method comprises the steps：
(1) hollow fiber film thread tow is hung on the support of pouring device；
(2) the film silk tow, cutting film silk plug-hole are tied up；
(3) width apart from uniform application polyurethane glue at film silk bottom 2-4cm, is being smeared for 1-2cm, air-drying：
(4) curtain putamina is inserted in the groove of base of the pouring device, ebonite is poured in the curtain putamina；
(5) carried out inserting adhesive process with film silk, it is 2-4cm to insert glue depth；
(6) after ebonite solidification, flexible glue is added to coat the polyurethane glue, the cladding is to be located from eboniteCladding 2-3cm of the face along membrane fiber length direction；
(7) after flexible glue solidification, with one end for casting upwards, the other end downwards, repeat step（2）-（6）It is rightThe component other end is cast；After the completion of casting, cutting technique is carried out to hollow fiber film assembly, complete pouring for curtain type film assemblyCasting.
Further, the support of pouring device described in step (1) includes support arm and rotatable inner support, described to revolveTurn inner support be with middle-end as fulcrum, upper and lower side can 360 ° rotation stainless steel stents, and upper and lower side be equipped with for positioningLatch, upper end also have multiple hooks for hanging the hollow fiber film thread tow.
Method of the present invention, before the step (3), also includes carrying out subregion to film silk, and adopts mechanism memberThe step of stepping up the film silk of subregion, two mechanism members of each subregion, the polyurethane glue are applied in the middle of two mechanism members.
Film silk gluing is conducive to using mechanism member, it is also possible in avoiding inserting adhesive process, the rambling phenomenon of film silk occur.
Wherein, the mechanism member is condensing tube tongs；The condensing tube tongs has hinge, the other end perpendicular to one end on the direction of film silkCan freely openable；The side of the condensing tube tongs is provided with the vertical latch closure for being available for positioning that rod is passed through, and the quantity of clasp is 1-2.
The positioning being provided with beneficial to condensing tube tongs of above-mentioned vertical latch closure, positioning rod herein can adopt various stick-like structures,Such as thin iron rod etc., disclosure satisfy that and be inserted through vertical latch closure, realize positioning.
Two wall of inside that condensing tube tongs of the present invention is contacted with film silk is provided with high-foaming material, wherein the high foaming materialMaterial preferably selects polyethylene foam occurred frequently, ethene-vinyl acetate expanded material or polyurethane foam material.Such material supplenessHeight, is difficult to injure film silk.
Method of the present invention, preferred steps（2）Film silk tow is divided into into 2-8 area after cleaved film silk and plug-hole,Each subregion clamps film silk using two mechanism members, with positioning rod is through the vertical latch closure in mechanism member and provokes after all film silksThe fixation positioning rod, before spreading glue, rotates 90 ° of the rotatable inner support, smears described poly- after latch fixing-stableUrethane glue；It is preferred that in step（4）After end, rotating the rotatable inner support makes which maintain 20-35 ° between support arm, excellentPositioning rod is released after selecting 25 °, it is artificial to hold up subregion film silk, rotate support arm vertical direction and latch is fixed, after removing mechanism partExecution step（5）.
Method of the present invention, groove described in step (3) scribbled oily matter before insertion curtain putamina, excellentThe oily matter is selected from butter or vaseline.
Further, before described in step (3), ebonite is poured in the curtain putamina, first by the ebonite 60 DEG C-0.5-1 hours are heated at 70 DEG C, and is cooled to 30 DEG C -40 DEG C.Jing after the process, ebonite hardening time is reduced, teeming speed is poured in raisingRate.
Further, the material of hollow fiber film thread described in step (1) be Kynoar (PVDF), polysulfones (PS),Any one in polyether sulfone (PES) or polyfluorinated ethylene (PTFE).
Further, hollow fiber film thread length described in step (1) is 0.5-2.5 rice.
Further, the quantity of hollow fiber film thread described in step (1) is 100-6000 roots.
Further, the poly- ammonia of fast setting of primary solidification by polyurethane glue described in step (2) is 30-60 minutesEster gum water.
Further, described in step (3), the length and width of groove is consistent with the curtain putamina, highly with the curtainThe 1/2 of formula putamina is highly consistent.
Invention also provides the curtain type film assembly that said method is prepared, the curtain type film assembly has more preferableApplication performance and longer service life.
(3) beneficial effect
The inventive method has the advantage that：Film silk is carried out after subregion using homemade condensing tube tongs, it is preliminary using flexible glueHollow fiber film thread is processed, makes between film silk and film silk, to be full of flexible glue, it is to avoid it is too high that ebonite climbs silk.Film silk after subregion fixation,Be not in rambling phenomenon in slotting adhesive process, keep component facade graceful, reduce the artificial process for arranging film silk.InsertingIn adhesive process, ebonite after heating, accelerate by curing rate, and trickling performance is improved, and the time required to reducing solidification, improves work effectRate.Flexible glue is added, flexible glue only need to trickle in the by stages of film silk, and trickling uniformity increases, more preferable protecting film silk rootPortion.
In sum, the inventive method had both improved work efficiency, can overcome again and climb silk because of ebonite, affected flexible glue trickling uniformThe problems such as cementability of property, film silk root fatigue resistance and film silk and flexible glue, adopting said method is obtained high performance curtain type membraneComponent.
Description of the drawings
The single subregion film silks of Fig. 1 apply daub sketch.
Fig. 2 curtain type film assemblies casting support sketch.
Wherein, 1:Vertical latch closure；2:Hinge；3:Thin iron rod；4:Hollow fiber film thread；5:Condensing tube tongs；6:Latch；7:360°Rotatable inner support；8:Support arm；9:Hook；10:Curtain putamina；11:Stainless steel base；12:Regional area（Figure is shown in amplification1）.
Specific embodiment
Embodiments of the present invention are described in further detail below in conjunction with accompanying drawing 1,2 and embodiment.Following examplesFor illustrating the present invention, but can not be used for limiting the scope of the present invention.
Embodiment 1：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：0.5m；
Hollow-fibre membrane silk：PVDF materials, quantity 100；
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Assembly property：Film silk fracture of root number≤99.5%.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk；100 hollow fiber film threads (4) are suspended on into rotatable inner support(7) on 2 hooks (9)；
(2) the long hollow fiber film threads of 0.5m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silkAnd plug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 2 groups of number of partitions adopts two condensing tube tongses per component area, fromEach apart from film silk bottom 25mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) using thin iron rod (3) (diameter is about 5mm) through vertical latch closure (1), after provoking all film silks, the thin ferrum of fixationRod (3)；（Referring to Fig. 1）
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-Urethane glue, spreading glue width 1cm, apart from film silk bottom 20mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessedCoating butter in groove；
(8) prepare epoxy resin ebonite, at 60 DEG C, heat 0.5h, mix homogeneously pours curtain putamina into after being cooled to 40 DEG CIn；
(9) after polyurethane glue 30min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, andUse Fixed latches；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depthSpend for 2cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite instituteFace along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centeringHollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly（Referring to Fig. 2）.
Embodiment 2：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：2m；
Hollow-fibre membrane silk：PTFE materials, quantity 3000；
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk, 3000 hollow fiber film threads (4) are suspended on into rotatable inner support(7) on 6 hooks (9)；
(2) the long hollow fiber film threads of 2m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silk is simultaneouslyPlug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 8 groups of number of partitions adopts two condensing tube tongses per component area, fromEach apart from film silk bottom 30mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) using thin iron rod (3) (diameter is about 8mm) through vertical latch closure (1), after provoking all film silks, the thin ferrum of fixationRod (3)；
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-Urethane glue, spreading glue width 2cm, apart from film silk bottom 40mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessedCoating butter in groove；
(8) prepare epoxy resin ebonite, at 65 DEG C, heat 1h, mix homogeneously is poured into after being cooled to 35 DEG C in curtain putamina；
(9) after polyurethane glue 60min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, andUse Fixed latches；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depthFor 4cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite instituteFace along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centeringHollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly.
Embodiment 3：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：2.5m
Hollow-fibre membrane silk：PVDF materials, quantity 6000
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk, 6000 hollow fiber film threads (4) are suspended in rotatable and are propped upOn 8 hooks (9) of frame (7)；
(2) the long hollow fiber film threads of 2.5m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silkAnd plug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 8 groups of number of partitions adopts two condensing tube tongses per component area, fromEach apart from film silk bottom 30mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) it is using thin iron rod (3) (diameter is about 10mm) through vertical latch closure (1), after provoking all film silks, fixed thinIron rod (3)；
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-Urethane glue, spreading glue width 2cm, apart from film silk bottom 40mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessedCoating butter in groove；
(8) prepare epoxy resin ebonite, at 70 DEG C, heat 1h, mix homogeneously is poured into after being cooled to 40 DEG C in curtain putamina；
(9) after polyurethane glue 60min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, andFixed with latch；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depthFor 4cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite instituteFace along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centeringHollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly.
Although the present invention is described in detail above to have used general explanation and specific embodiment, at thisOn the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art；Therefore,These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.