CN205933365U - Diffuser subassembly reaches wastewater treatment tank including this subassembly - Google Patents

Abstract

The utility model provides a diffuser subassembly reaches wastewater treatment tank including this subassembly, including flexible diffuser membrane and diffuser main part. Flexible diffuser membrane limits the circumference turn -up. The diffuser main part limits and underlies the plectane of flexible diffuser membrane, and cover the edge ring of the cover part of circumference turn -up. Edge ring limit with the circumference turn -up cover the internal surface that partial outside shape conforms. Edge ring with the diffuser main part becomes integrative. This type of diffuser subassembly can provide disposable diffuser component selection, disposable diffuser component selection has many advantages of comparing with the routine techniques, if the easy nature of improving of installation, lower weight and lower cost.

Description

Diffuser assembly and the waste water treatment tank including this assembly

Technical field

The utility model relates generally to wastewater treatment, and systems for using in the treatment of waste water Tiny bubble diffuser assembly.

Background technology

Flexible diffuser is commonly used to support the aerobe process in waste water treatment plant.Flexible diffuser generally include by Discoid, tubulose or belt type film that rubber or other similar materials are constituted, described film is pierced to provide in hole or slit formula Some perforation.In operation, compressed air passes through these perforation transmission, to produce the plume of minute bubbles.Bubble passes through on waste water Rise, and the oxygen maintaining generation required biological processes wherein to need is provided to waste water around.

Fig. 1 illustrates that the local of tiny bubble diffuser assembly 100 disconnects side perspective view, described tiny bubble diffuser group Part generally in modern waste water disposal facility, for processing to " the flooding " of waste water.As one example only, exist Described in F.L.Burton, Wastewater Engineering (McGraw-Hill College, 2002), there is this assembly Wastewater treatment, it is hereby incorporated by herein.When in use, multiple diffuser assemblies are at waste water Array in some lateral distribution duct of reason groove.Diffuser assembly can be for example along given lateral every foot of placement of distribution duct.Lean on Compressed air is sent to lateral distribution pipe via some supports pipeline (for example, dropper and manifold) by the hair-dryer of nearly groove positioning Road.

In diffuser assembly 100, flexible diffuser film 110 is placed on the top of diffuser body 120.Diffuser body 120 include screw thread adapting pipe 130, air intlet 140, and for being coupled to the receiving surface 150 of snap ring 160.Snap ring 160 is protected Hold flexible diffuser film 110 against diffuser body 120.When gas puts on flexible diffuser film 110 through air intlet 140 When, gas pressure expansion flexible diffuser film 110 is away from diffuser body 120, and causes the perforation of film to be opened, so that bringing about the desired sensation Body passes through described perforation to discharge with tiny bubble form.When gas pressure mitigates, flexible diffuser film 110 is in diffuser body Rupture on 120, bore a hole to close and prevent liquid from entering diffuser body 120 in the opposite direction.Generally, join by this way The flexible diffuser film 110 put produces the bubble that diameter is less than five millimeters.The surface area of gained and volume in these bubbles Big ratio promote the effective oxygen transfer between bubble and surrounding waste water.Tiny bubble also results in the shifting upwards in waste water treatment tank Dynamic, this content helping to maintain the solid waste in suspension and mixing described groove.

Diffuser assembly (as diffuser assembly 100) still comparative prevalence including screw thread adapting pipe, because described diffusion Device assembly can be easily attached to gas distribution pipeline via its screw thread adapting pipe and be separated with gas distribution pipeline, to examine Repair.Even so, overhaul this device still relative to labour intensive, and typically require and use experienced operator.In order to often change Diffuser film on rule screw thread diffuser assembly (for example as diffuser assembly 100), diffuser assembly must divide from its gas Distribution pipes are placed on the securing means after removing, and remove the snap ring of diffuser assembly to allow its diffuser film to lift away from.So New diffuser film must be placed in its appropriate location afterwards, and snap ring lubricates and reapplies in appropriate torque value.Permitted In the case of many, snap ring also must be replaced due to damaging.Then only complete diffuser assembly can remove from fixing device, and pacifies again It is filled to its gas distribution pipeline, be attached to appropriate torque value again.

It is thus desirable to the substituting diffuser assembly of some in solution drawbacks described above.

Utility model content

Embodiment of the present utility model solves above-mentioned need by providing the diffuser assembly with flexible diffuser film Will, described flexible diffuser film is captured by diffuser body using integral edge ring, and described integral edge ring can not be with diffuser The remainder of main body is separately.This kind of diffuser assembly can provide disposable diffuser assembly to select, described disposable diffuser Assembly selects the many advantages having compared with routine techniques, and the such as installation easiness improved, relatively low weight becomes with relatively low This.

Aspect of the present utility model is directed to diffuser assembly, and described diffuser assembly includes flexible diffuser film and diffuser Main body.Flexible diffuser film defines circumferential bead.Diffuser body defines the plectane of the flexible diffuser film that underlies, and covers circle The edge ring of the covering part of all crimpings.Edge ring defines the interior table being consistent with the outer shape of the covering part of circumferential bead Face.Edge ring is integral with diffuser body.

Another aspect of the present utility model is directed to Waste Water Treatment, and described Waste Water Treatment includes meeting the preceding paragraph The diffuser assembly limiting.

Finally, of the present utility model or even other aspect is directed to the method manufacturing diffuser assembly.Circumference is defined in reception The flexible diffuser film of crimping.Form diffuser body at least partially through injection mould, described diffuser body defines down The plectane of volt flexible diffuser film, and the edge ring covering the covering part of circumferential bead.Circumference diffuser body is demarcated The fixed inner surface being consistent with the outer shape of the covering part of circumferential bead.Edge ring is integral with diffuser body.

Brief description

With reference to following description, appended claims and accompanying drawing, be better understood with of the present utility model these and other Feature, aspect and advantage, in accompanying drawing：

Fig. 1 illustrates that the local of conventional tiny bubble diffuser assembly disconnects side perspective view；

Fig. 2 illustrates to be attached to three diffusers according to exemplary embodiment of the present utility model of gas distribution pipeline The perspective view of assembly；

Fig. 3 and Fig. 4 illustrates the perspective cross-sectional view of the part along indicated plane in Fig. 2 for the representative diffuser assembly；

Fig. 5 illustrates the decomposition diagram that diffuser assembly is with respect to the downside of gas distribution pipeline；

Fig. 6 illustrates the sectional view of the diffuser assembly and gas distribution pipeline part along indicated plane in Fig. 2；

Fig. 7 illustrates the sectional view of the part of diffuser assembly and gas distribution pipeline, and wherein compressed gas are just being supplied to expansion Scattered device assembly；

Fig. 8 illustrates that molding parts disconnect decomposition diagram with respect to the local of the element of diffuser assembly；

Fig. 9 illustrates the perspective view of the molding parts around the closing of diffuser assembly element；

Before Figure 10 and Figure 11 illustrates to inject molten plastic, the space of circumferential bead being adjacent to diffuser assembly is along figure The sectional view of indicated plane in 9；And

After Figure 12 and Figure 13 is shown respectively injection molten plastic, the section of the same area shown in Figure 10 and Figure 11 Figure.

Specific embodiment

With reference to exemplary embodiment, the utility model will be described.For this reason, these embodiments can be held Row is many to be changed, and its result will still fall within the scope of the utility model.Specific embodiments described herein It is not intended to or should not be inferred to be restrictive condition.

As herein and used in appended claims, if the volume of element is not modified more than 10, So element " substantially not compressed by other things "." direct " meaning of term does not have any intervening element.Finally, if not Cutting, destroy, fusing, or otherwise damage element in the case of, feature can not be separated with the remainder of element, then Feature and described element " integral " by element defining.

Fig. 2 illustrates the perspective view of three diffuser assemblies 200 according to exemplary embodiment of the present utility model, wherein Diffuser assembly 200 is attached to gas distribution pipeline 300.Each of diffuser assembly 200 includes corresponding diffuser master Body 205, described diffuser body supports corresponding flexible diffuser film 210.Diffuser assembly 200 and gas distribution pipeline 300 Can be placed at the bottom of waste water treatment tank.Then, can cause gas distribution pipeline 300 by gas (for example, air) supply to Diffuser assembly 200, to cause diffuser assembly 200 that bubble is discharged into around in waste water.

The other details of the representative diffuser assembly in diffuser assembly 200 shown in Fig. 2 to Fig. 6.Fig. 3 and Fig. 4 shows Go out the perspective cross-sectional view of the appropriate section along indicated plane in Fig. 2 for the diffuser assembly 200, and Fig. 5 illustrates diffuser group The decomposition diagram of the downside with respect to gas distribution pipeline 300 for the part 200.Finally, Fig. 6 illustrates diffuser assembly 200 and gas The sectional view of the part along indicated plane in Fig. 2 for the distribution duct 300.

Flexible diffuser film 210 is discoidal, and defines circumferential bead 215.In this exemplary embodiment, circle All crimpings 215 have the square cross section with fillet.Multiple perforation penetrate flexible diffuser film 210, except expanding flexible In the complete area of center of scattered device film 210 (described further below and mark).Diffuser body 205 define underlie soft Property diffuser film 210 plectane 220, and cover flexible diffuser film 210 circumferential bead 215 a part (hereinafter, " covering part " of circumferential bead 215) edge ring 225.Covering part is made up of the great majority in circumferential bead 215.

Edge ring 225 is used for for flexible diffuser film 210 remaining to diffuser body 205.Edge ring 225 defines and circumference The inner surface 230 that the outer shape of the covering part of crimping 215 is consistent, and indistinctively compress circumferential bead 215.Do so When, edge ring 225 defines multiple slits 235 wherein, and each slit 235 exposes the outer surfaces part of circumferential bead 215 240.Meanwhile, edge ring 225 integral with diffuser body 205 it is meant that not cutting, destroy, melt, or otherwise In the case of damaging diffuser body 205, edge ring 225 can not remove from the remainder of diffuser body 205.This is substantially not It is same as the conventional diffuser assembly 100 in Fig. 1, wherein snap ring 160 is different from diffuser body 120, and is removedly screwed in On the receiving surface 150 of diffuser body 120.

Diffuser body 205 further describes screw thread adapting pipe 245, and described screw thread adapting pipe has and is terminated at plectane 220 In opening 255 in internal gas passageways 250.It is attached to gas service pipes in diffuser assembly 200 in the way of indicated In the case of road 300, inside 305 gas connection of internal gas passageways 250 and gas distribution pipeline 300.Internal gas passageways 250 with its opening 255 in plectane 220 constriction, thus forming aperture 260.The big I in this aperture 260 is directed to Concrete application customizes.Some ribs 265 on the bottom of diffuser body 205 increase extra intensity to diffuser body 205.

Referring still to Fig. 2 to Fig. 6 it should be noted that thin discs 270 are arranged on flexible diffuser film 210 and diffuser body 205 Plectane 220 between.Thin discs 270 include centre bore 275, and described centre bore overlies the opening 255 in plectane 220.As with Under will be further explained in detail, can be by obtaining edge ring around flexible diffuser film 210 injection mould diffuser body 205 The accordance of the covering part with respect to circumferential bead 215 for the inner surface 230 of 225 globality and edge ring 225.Thin discs 270 contribute to this process.

Fig. 7 illustrates diffuser assembly 200 and gas distribution pipeline 300 along the appropriate section of indicated plane in Fig. 2 Sectional view, but just supply to diffuser group via gas distribution pipeline 300 in compressed gas (in this case for air) Under conditions of part 200.Gas pressure expansion flexible diffuser film 210 is away from diffuser body 205, and causes gas from flexibility The perforation of diffuser film 210 is discharged as tiny bubble.The complete area 280 not having to bore a hole of flexible diffuser film 210 is put Opening more than 255 in plectane 220.This complete area 280 allows diffuser assembly to serve as check-valves, and is closing pressure Prevent waste water from overflowing gas distribution pipeline 300 during contracting gas.When cutting off gas pressure, flexible diffuser film 210 is in response to soft Property diffuser film 210 returns to lax, not extended configuration natural tendency, and the weight in response to waste water around and collapse and return to In diffuser body 205.So lax, then produce the condition shown in Fig. 6.Flexible diffuser film 210 is being positioned to as Fig. 6 In in the case of, the complete area 280 overlying opening 255 of flexible diffuser film 210, and prevent waste water enterprising in the opposite direction Enter internal gas passageways 250.

Flexible diffuser film 210 may include elastomer, described elastomer such as, but not limited to, ethylene propylene diene monomer (EPDM).The one or both sides of flexible diffuser film 210 can be covered in for example as the fluoroelastomer of polytetrafluoroethylene (PTFE) (PTFE) In, or flexible diffuser film 210 can be impregnated with fluorine.PTFE coating and fluorine dipping have been demonstrated to reduce the speed of diffuser film blocking Rate.Diffuser body 205 may include injectable mold thermoplastic, and described injectable mold thermoplastic is for example as poly- third Alkene, acronitrile-butadiene-styrene, polyvinyl chloride and polyformaldehyde.Thin discs 270 may also include plastics；In preferred embodiment In, thin discs 270 are formed by with diffuser body 205 identical plastics.

As indicated above, can be by using some molding parts around flexible diffuser film 210 injection mould diffuser master Body 205 is forming diffuser assembly 200.The general aspect of injection mould has been known to those possessing an ordinary skill in the pertinent arts, And also described in some facile publications, described publication includes, as one example only, D.V.Rosatto etc. People, Injection Molding Handbook (Springer Science＆Business Media, 2012), its thus with Way of reference is incorporated herein.The local of the element with respect to diffuser assembly 200 for the molding parts shown in Fig. 8 disconnects, decomposes Perspective view, and under conditions of Fig. 9 is shown in before any molten plastic of injection, around the mold of identical diffuser assembly element closing The perspective view of part.

In order to allow gravity to contribute to this process, execution Fig. 8 and injection mould set forth in fig. 9, wherein flexible diffusion Device film 210 overturns with respect to its orientation in Fig. 2 to Fig. 7.Molding parts include bottom model 400, the first top model 405th, the second top model 410 and insert 415.Before injecting any plastics, flexible diffuser film 210 is put top-downly Put on bottom model 400, so that the multiple support teeth 420 on bottom model 400 support the circumference of flexible diffuser film 210 Crimping 215.Then thin discs 270 are placed on flexible diffuser film 210.Finally, the first top model 405, second is pushed up Portion's model 410 and insert 415 are arranged on the top of bottom model 400 to realize the situation shown in Fig. 9.

Configure by this way, model 400,405,410 around flexible diffuser film 210 circumferential bead 215 define for First space 425 of molten plastic, thus allow the formation of the edge ring 225 of diffuser body 205.Meanwhile, model 400, 405th, 410 and insert 415 define second space 430 in flexible diffuser film more than 210, thus allowing plectane 220 and screw thread The formation of adapting pipe 245.Figure 10 and Figure 11 illustrates to be adjacent to the space 425,430 of circumferential bead 215 along indicated in Fig. 9 The sectional view of plane.According to these views, support how tooth 420 helps support in the space 425 for forming edge ring 225 Circumferential bead 215 becomes apparent from.

Molten plastic can be injected by the injection orifice 435 in top model 405,410.Figure 12 and Figure 13 is shown respectively Figure 10 With the sectional view of the same area shown in Figure 11, but injection formed diffuser body 205 plastics after.Wherein present and prop up Support tooth 420 (Figure 13), finds the multiple slits 235 in edge ring 225, and the plurality of slit is so obvious in figs. 3 and 4, Thus explaining the source of these slits 235.Wherein do not assume support tooth 420 (Figure 12), find the area of encirclement completely of edge ring 225 Domain.Because molten plastic can flow directly to the circumferential bead 215 of flexible diffuser film 210, also find edge ring 225 boundary The fixed inner surface 230 being consistent with the outer shape of the covering part of circumferential bead 215.

When forming the prototype of above-mentioned diffuser assembly 200, find by experience, in the situation that there are not thin discs 270 Under, newly formed plectane 220 has the trend being fused to flexible diffuser film 210.Once so fusing, then flexible diffuser film 210 do not execute on demand.On the contrary, in the case that thin discs 270 are in appropriate location, do not see this fusion, and expand Scattered device assembly 200 is appropriately performed.Therefore, because it contributes to the mode of manufacture process, thin discs 270 are the preferred of the design Aspect.During identical experiment, arrive always according to empiric observation, the square cross of the circumferential bead 215 of flexible diffuser film 210 Face seems to allow edge ring 225 that circumferential bead 215 is firmly anchored into diffuser body 205, and prevents during use Any slip or seepage.Therefore, this shape of cross section is also preferred.In both cases, term " preferably " is intended to anticipate Taste is approved of, but not necessarily falls within the scope of the utility model.

Above-mentioned diffuser assembly 200, thus becoming monomer, " solid-state " diffuser assembly, means described diffuser assembly not Single diffuser film, main body and screw thread snap ring is used in the way of the conventional diffuser assembly in Fig. 1.Thus, diffuser group Part 200, and more generally, falling into the diffuser assembly within the scope of the utility model can be provided compared with routine techniques Some advantages.For example, diffuser assembly 200 can be used as disposable unit in this area.When flexible diffuser film 210 finally becomes When must block, whole diffuser assembly 200 is replaced by new diffuser assembly.This replacement is shirtsleeve operation it is only necessary to one Individual new part it is not necessary to diffuser decompose, lubrication, special key, or to destroying the notable concern of part or seepage.In addition, The weight of diffuser assembly 200 may significantly be less than that the diffuser assembly being made up of independent assembly, because described diffuser assembly 200 are not required to process the stress from the holding member tightened using thick plastics.Finally, can when forming diffuser assembly 200 Can be using less expensive plastic resin, because single diffuser body is more tied than the snap ring of screw thread tensioning and main body in structure Real.In some cases, recycled plastic can select for a kind of.

Should it is once more emphasized that, the embodiment above of the present utility model is only intended to exemplary.Other embodiments Can be using dissimilar and arrangement element, to implement described function.This within the scope of the appended claims A little many alternate embodiment will be apparent to those skilled in the art.

Additionally, all features disclosed herein can be replaced by the alternative characteristics servicing identical, equivalent or similar purpose Change, unless otherwise expressly specified.Therefore, unless otherwise expressly specified, each otherwise disclosed feature be only equivalent or One of universal serial of similar characteristics example.

Claims (13)

1. a kind of diffuser assembly, it includes：

Flexible diffuser film, it defines circumferential bead；And

Diffuser body, it defines the plectane of the described flexible diffuser film that underlies, and the covering part covering described circumferential bead The edge ring divided；

Wherein, described edge ring defines the inner surface being consistent with the outer shape of the described covering part of described circumferential bead；With And described edge ring is integral with described diffuser body.

2. diffuser assembly as claimed in claim 1, wherein said flexible diffuser film includes elastomer.

3. diffuser assembly as claimed in claim 1, wherein said flexible diffuser film defines through described flexible diffuser Multiple perforation of film.

4. diffuser assembly as claimed in claim 1, wherein said diffuser body includes thermoplastic.

5. diffuser assembly as claimed in claim 1, wherein, described plectane defines opening；And described diffuser body circle Determine screw thread adapting pipe, described screw thread adapting pipe has the internal gas passageways being terminated in described opening.

6. diffuser assembly as claimed in claim 5, wherein said flexible diffuser film defines the complete of opening described in overlying Region, described complete area does not have the perforation through described complete area.

7. diffuser assembly as claimed in claim 5, wherein said edge ring defines multiple slit therein, the plurality of narrow Each slit in groove exposes the outer surfaces part of described circumferential bead.

8. diffuser assembly as claimed in claim 1, wherein said covering part is by the most array in described circumferential bead Become.

9. diffuser assembly as claimed in claim 1, wherein said circumferential bead is not generally by described diffuser body pressure Contracting.

10. diffuser assembly as claimed in claim 1, it further includes thin slice, described thin slice be arranged on described plectane with Between described flexible diffuser film.

11. diffuser assemblies as claimed in claim 10, wherein said thin slice includes plastics.

A kind of 12. waste water treatment tank including diffuser assembly, described diffuser assembly includes：

Flexible diffuser film, it defines circumferential bead；And

Diffuser body, it defines the plectane of the described flexible diffuser film that underlies, and the covering part covering described circumferential bead The edge ring divided；

Wherein, described edge ring defines the inner surface being consistent with the outer shape of the described covering part of described circumferential bead；With And described edge ring is integral with described diffuser body.

13. waste water treatment tank as claimed in claim 12, it further includes gas distribution pipeline, wherein said diffuser group Part is connected with the internal gas of described gas distribution pipeline.