CN2339573Y - Improved diaphragm type micro-hole areation device - Google Patents

Abstract

The utility model relates to the improvement of an elastic diaphragm type micro-hole aeration device for water treatment, which is characterized in that a disk type aeration diaphragm with plane structure and a diaphragm supporting seat are changed into a spherical cap shape structure. Thereby, the defects that a plane aeration diaphragm is unable to be attached to the supporting seat tightly because of fatigue relaxation by long-term use and the plane aeration diaphragm is easy to generate water leakage and back flow are overcome. The utility model also causes sludge in water body to be not easy to have deposit accumulation on the surface of the aeration device after air is shut off, thereby, the pressure resistance when the aeration device restarts is lightened, simultaneously, the aeration device with the spherical cap shape is also added with effective aeration service area, the opening density of the diaphragm is reduced, and the service life of the utility model is prolonged. The aeration device of the utility model is suitable for urban sewage and industrial waste water treatment, and the utility model can also be used for biochemical treatment for a slight pollution water source.

Description

A kind of improved microporous diaphragm aerator

Utility model be about to water treatment with the decline improvement of hole aerator of flexible sheet.

The ceramic capillary aerator, owing to exist dedusting and purifying air requirement height, micropore stops up easily in the use, causes aeration resistance to increase, shortcomings such as oxygenation capacity reduction, thus need set up washing unit in addition, thereby application is subjected to certain limitation.For overcoming above-mentioned deficiency, Chinese patent 92205599.8 discloses a kind of disc type diaphragm micro-hole aerator that adopts flexible sheet to make the aeration dispersing element, its formation comprises the elastic linear aeration membrane that has micropore, planar diaphragm support (support) plate and bowl-type plenum chamber.Though this plane disc microporous diaphragm aerator has overcome the ceramic capillary aerator to the api request height, susceptible to plugging shortcoming in the use.But in actual use, rubber diaphragm one is to occur easily aging tired laxly, and the two dimensional structure rear film of can not guaranteeing to stop the supple of gas or steam is close on the supporting plate fully, easily causes water body to flow backwards and enters gas distribution pipeline; The 2nd, micropore is a vertical incision on the planar diaphragm, stopping the supple of gas or steam the back micropore can not closure in full force and effect, especially the rubber diaphragm of working after for some time is tired lax, vertical incision more can not closure in full force and effect, equally easily cause water body to flow backwards and enter aerator, influence aerating system efficient and safe operation through the diaphragm micropore.Enter gas distribution pipeline for stoping water body to flow backwards, then can prevent the unidirectional reverse checkvalve that water body flows backwards in the setting of aerator air supply outlet.Set up unidirectional reverse checkvalve, though can stop aqueous reflux to enter gas distribution pipeline, enter plenum chamber but still can not solve water fully by the refluence of aeration membrane micropore, water enters plenum chamber and can cause aeration resistance to increase equally, the aeration effect descends, power consumption increases, so even the disc type diaphragm aerator of unidirectional reverse checkvalve is housed, do not solve the refluence backwater problem of the back water body of stopping the supple of gas or steam completely.And the setting up of reverse checkvalve, make aeration resistance strengthen, increased the power consume.The effective aeration area of disc type diaphragm aerator is relatively little in addition, and for satisfying the requirement of aeration rate, perforate is generally closeer, and so long-term aeration work causes tearing of rubber diaphragm easily, influences the work-ing life of aerator.Disc type two dimensional structure besides, after stopping aeration, mud precipitates easily and accumulates in the aeration membrane surface, the resistance when having increased aeration once more in the water, strengthening aeration intensity also causes aeration membrane to damage above-mentioned all promoting the use of of all influencing disc type diaphragm aerator in various degree easily.

The purpose of utility model is to overcome the deficiency of above-mentioned prior art, is difficult for accumulated sludge after a kind of stopping the supple of gas or steam is provided, and can effectively stop water body to flow backwards, and effectively the aeration service area is big, the microporous diaphragm aerator of long service life.

The utility model purpose realizes, the main improvement is that disc type aeration membrane and diaphragm support seat with two dimensional structure changes spherical cap-shaped structure into.Specifically, the utility model microporous diaphragm aerator comprises the elasticity aeration membrane that has micropore, aeration membrane supporting base and to the parichnos of aeration membrane air feed, said aeration membrane Bao Meng is characterized in that said aeration membrane and diaphragm support seat are spherical on supporting base.During aeration work, pressure air enters between ball coronal aeration membrane and the supporting base by air supply channel, under the supply gas pressure effect, the former elasticity aeration membrane integral body of being close on the spherical supporting base is heaved left supporting base formation one work distribution space, thereby make pressure air by the evenly outside diffused aeration of the micropore on the aeration membrane; After stopping the supple of gas or steam, the distribution space of working between diaphragm and supporting base disappears, and aeration membrane is replied to be close to and is pressed on spherical supporting base surface under hydraulic pressure and self elastic recovery acting in conjunction.

The said spherical cap-shaped structure of utility model is meant the circular arc domes that comprise similar spherical crown shape projection.Spherical elasticity aeration membrane, a kind of structure preferably are that the base has inside contraction to extend the ring limit of turning up downwards, and the bag that helps diaphragm and supporting base like this covers fixing.Aerating pore on the diaphragm, a kind of bar shaped micropore that is preferably, bar shaped micropore distribute and are staggered up and down to good to be concentric(al) circles especially, can reduce the diaphragm aeration resistance like this, satisfy low tolerance aeration requirement.Pore density is satisfied decrescence few from the diaphragm periphery to the center.Be the raising back micropore closed of stopping the supple of gas or steam, bar shaped micropore otch is excellent with slant cutting edge especially, and otch is oblique to tilt for well the staggered up and down overlap joint of otch when slant cutting edge is closed, the body that more can effectively block water refluence again especially with contrary sphere.The outlet of aerator parichnos wherein especially to be opened in top, supporting base sphere top for well, exports top diaphragm and does not open aerating pore, also can improve water preventing ability.The peripheral folding that can be provided with concavo-convex complementary fit between the corresponding with it diaphragm that reaches of supporting base parichnos outlet seals, and more can improve the back of stopping the supple of gas or steam and stop the water body refluence to enter between aeration membrane and the supporting base.For improving the homogeneity of distribution, air supply outlet can also be located at spherical side face.Make in fact novel aerator and can pass through hollow (band air passageways) bolt being connected of gas distribution pipeline and be connected, also can be connected with gas distribution pipeline by watt obvolvent of closing up and down of anchor ear such as wedge shape grafting with gas distribution pipeline.

Below in conjunction with the description of three preferred embodiments, further specify the utility model structure.

Fig. 1 is the first example structure synoptic diagram.

Fig. 2, Fig. 3 amplify for the embodiment top structure and the different angular cutouts synoptic diagram of micropore.

Fig. 4 is the second example structure synoptic diagram.

Fig. 5 is the 3rd example structure synoptic diagram.

Embodiment 1: referring to Fig. 1, micro-hole aerator has spherical supporting base 2 and the spherical rubber aeration membrane of being close on the supporting base 1, and steam line 3 is formed.Steam line is fixed on center in the spherical supporting base by back up pad 7, and there is air outlet 3.1 at center, supporting base top, and the screw thread 6 that is connected and fixed with gas-distribution pipe is arranged at the steam line bottom.Spherical supporting base is following inwardly to be shunk and forms ring limit 8 to downward liter, and also there is inside contraction the diaphragm bottom and stretches turning up of cooperating with supporting seat ring limit down and encircle limit 4, and diaphragm is held tightly form hermetic seal on supporting base by tightening up hoop 5.The obvolvent web member that aerator is formed by internal thread 6 and last semi-ring 10 that is the wedge shape grafting that is connected together by hollow bolt 9 and following semi-ring 11 is fixed on the gas distribution pipeline, and is communicated with by tracheae insertion gas distribution pipeline gas.Supporting base top center (Fig. 2) has a slightly recessed pit 12, the annulus 13 that projection is arranged in the pit, diaphragm inner top and pit are to there being concavo-convex complementary boss platform 14, and boss has boss ring 15 outward, form the folding sealing that tenon closes concavo-convex complementary waterproof body refluence thereby work in coordination.Aerating pore 16 on the diaphragm (central section, ball top atresia) is fan-shaped otch, otch tilts (also reversible sphere tilts) along sphere and level is miter angle, the flat micropore is concentric(al) circles according to long axis direction and is interspersed up and down on the spherical crown diaphragm, pore density is satisfied decrescence few from the diaphragm periphery to the center.

Embodiment 2: referring to Fig. 4, as embodiment 1, ring 20, one bowl-type chassis 19, limit were embedded in the spherical supporting seat ring limit 20 mutually in spherical supporting base 2 bottoms had, and the fastening on spherical supporting base and bowl-type chassis constitutes a distribution space 21.The bowl-type tray bottom has a hollow bolt 18 to fixedly connected with gas distribution pipeline upper nut 17, and aerator is fixed on the gas distribution pipeline, and hollow bolt plays fixedly aerator effect on the one hand, also is the passage to the aerator air feed on the other hand.

Embodiment 3: referring to Fig. 5, as embodiment 2, bowl-type chassis 19 is fixed with semi-ring 10 in the wedge shape grafting obvolvent, and center chassis has valve 22 to be communicated with gas-distribution pipe gas.Aerator is fixed on the gas distribution pipeline by semi-ring in the wedge shape grafting obvolvent 10 and following semi-ring 11.

Utility model aeration membrane bar shaped micropore otch can also be that contrary sphere radian tilts as Fig. 3.Air supply outlet can also be a plurality of, and tilts in the shape of a spiral, and can also offer some little air supply outlets on sphere.

Utility model aeration membrane and diaphragm support seat are owing to adopt spherical cap-shaped structure, and the back mud of not only stopping the supple of gas or steam is difficult for precipitation and accumulates in the aerator surface; And spherical cap-shaped structure, the back aeration membrane of satisfied stopping the supple of gas or steam remains the driving fit of being close to the diaphragm support seat, even because of life-time service causes diaphragm tired lax, diaphragm also can be close to spherical supporting base surface, be aided with the top air feed, make the aerator back block-water performance big raising of stopping the supple of gas or steam; Secondly, spherical diaphragm also helps the micropore otch is split into inclination, makes bar shaped micropore otch that one staggered overlap joint be arranged, and the staggered up and down superimposed effective closed in hole that makes improves, and the complete closure of more favourable like this micropore more can stop water body to flow backwards than the vertical incision micropore.The folding sealing that air feed port peripheral concavo-convex complementary tenon in top closes is played two road sealing functions to air feed port, and the back water body of more can thoroughly avoiding stopping the supple of gas or steam pours in down a chimney.Working face ovalize when spherical diaphragm aeration is worked, thereby effectively the aeration service area is big than the plane disc type of same diameter, can reduce the existence at dead angle between aeration, and under the same services area, can suitably reduce diaphragm perforation density, anti-this fragility of diaphragm is improved, also can prolongs diaphragm work-ing life.The bar shaped micropore that concentric(al) circles distributes, aeration resistance is little, also can satisfy low tolerance aeration requirement, and it is even to reach gas distribution equally under low aeration intensity, thereby can be used for the low little source of pollution water of oxygen-consumption aeration and biological processing.Therefore utility model has not only overcome diaphragm and laxly can not be close to supporting base because of life-time service is tired, easily produce the defective of leaking and pouring in down a chimney, but also make the mud of stopping the supple of gas or steam in the water body of back be not easy precipitation and accumulate in the aerator surface, thereby alleviated the pressure resistance when aerator is restarted, also increased effective aeration service area simultaneously, reduce diaphragm perforation density, prolonged work-ing life.

Claims (8)

1, a kind of microporous diaphragm aerator, comprise the elasticity aeration membrane that has micropore, aeration membrane supporting base and to the parichnos of aeration membrane air feed, said aeration membrane Bao Meng is characterized in that said aeration membrane and diaphragm support seat are spherical on supporting base.

2,, it is characterized in that said aeration membrane bottom has one inwardly to shrink the ring of stretching down of turning up according to the described micro-hole aerator of claim 1.

3,, it is characterized in that said diaphragm support seat below also has a bowl-type chassis that fastens with it according to the described micro-hole aerator of claim 1.

4,, it is characterized in that micropore is flat bar on the said diaphragm according to the described micro-hole aerator of claim 1.

5,, it is characterized in that said bar shaped micropore otch is oblique according to the described micro-hole aerator of claim 4.

6,, it is characterized in that said bar shaped micropore is concentric(al) circles according to long axis direction and distributes on spherical diaphragm according to the described micro-hole aerator of claim 5.

7,, it is characterized in that the bar shaped micropore that said concentric(al) circles distributes is staggered up and down according to the described micro-hole aerator of claim 6.

8,, it is characterized in that having between said supporting base top and diaphragm top the concavo-convex folding sealing that cooperates according to claim 1,2,3,4,5,6 or 7 described micro-hole aerators.

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