CN206014499U - A kind of efficient oxygenating system of the confined space - Google Patents

Abstract

The utility model discloses a kind of efficient oxygenating system of the confined space, which includes Aeration tank, some deflectors are set along water (flow) direction in the Aeration tank, the Aeration tank is divided into some regions by the deflector, the aerator of centralized arrangement varying number is required according to the dissolved oxygen in the region in some regions respectively, the aerator is rotary-cut mixed flow aerator, water conservancy diversion sickle is provided with above the outlet of the rotary-cut mixed flow aerator, the water conservancy diversion sickle is arranged on outside the central intake pipe, and there is between the water conservancy diversion sickle and the outlet buffer distance；The water conservancy diversion sickle is inverted cone, and its taper is 60 65 °.This utility model solves the problems such as uneven, the overall dissolved oxygen efficiency of aeration is low in Aerobic Pond, cell body sludge deposits, aerator easily comes off, blocks, aging, oxygen transfer efficiency declines the inconvenience of fast, management service, high cost in Practical Project.

Description

A kind of efficient oxygenating system of the confined space

Technical field

This utility model is related to stain disease processing technology field, and more particularly to a kind of confined space for aeration is efficiently filled Oxygen system.

Background technology

Aerobic biological treatment process is processed in all types of industries waste water and city domestic sewage and is widely used in engineering.Aeration is Its crucial process procedure, oxygenation in being realized to sewage by aerator provide oxygen for aerobic microbiological decomposing organic matter And maintain the activity of aerobic microbiological, in addition, aeration also functions to the effect for stirring mixing, it is ensured that activated sludge, dissolved oxygen, organic Pollutant three is fully contacted, and improves wastewater treatment efficiency.Blast aeration is the aeration mode that domestic main flow is adopted, by air blast Machine, air-diffuser and airflow pipe composition.According to the Air Bubble Size for producing, air-diffuser can be divided into microbubble Disperser, middle bubble diffusing apparatus and air pocket disperser.In theory, bubble is less, and gas liquid interfacial area is bigger, oxygen profit Higher with rate, so microporous diaphragm aerator is widely applied with its high usage at present.However, existing aeration sets For but inevitably occurring in actual moving process, in Aerobic Pond, aeration is uneven, and overall dissolved oxygen efficiency is low, pool bottom sludge Alluvial anaerobism, because the coming off, block of aerator, aging etc. caused by coefficient of oxygen utilization dramatic decrease, high energy consumption, high operating cost The problems such as.

Majority aerobic treatment unit adopts blast aeration at present, and diaphragm type aerator is air diffusion apparatus.Fig. 1 is aerating system Schematic diagram, forced air are provided by aerator 30, and airflow pipe plays a part of conveying and distribution, is uniformly fixedly mounted on The air diffusion apparatus 40 of Aeration tank bottom are the key positions of whole aerating system, and its effect is the compression for providing aerator Air is dispersed into bubble as little as possible, to increase the contact interface of air and mixed liquor, promotes the oxygen dissolution in air to arrive Mass transport process in water.

There is problems with existing aerating system practical application：

1. aerator is more by the way of full pond is evenly arranged, and in actual sewage processing procedure, along Aeration tank current side To pollutant levels are gradually lowered, and uniform gas distribution can cause Aeration tank front end aeration not enough, end excess, are to ensure that aeration is equal Even and need increase aeration rate, cause operating cost increase；

2. existing aerating system dissolved oxygen efficiency is not high in general, and the diaphragm type aerator that aerating system is used is formed Bubble very little, though increased gas liquid interfacial area, as bubble size is less, bubble motion speed is slower, it is impossible to form water Stream, the perturbation action to mixed liquor in pond is not strong, finally reduces oxygen transfer process, in addition unidirectional aeration mode only up Cause the stirring effect to pool bottom sludge very poor, cause pool bottom sludge anaerobism；

3. aerator is fixed on bottom of pond, and easily comes off in running, causes local to be lost heart, may finally cause to expose Gas system crash, changes to stop production when safeguarding and drains rear operation；

4. the fenestra of diaphragm type aerator is little, and air flow resistance is big, causes the pressure loss to increase, and corresponding energy consumption rises；

5. quality of rubber materials used by the diaphragm of diaphragm type aerator is easily aging, and service life is shorter, and generally 3 years, diaphragm was old After changing tear, aeration efficiency drastically declines, and produces local pressure release, and fenestra is easily blocked, especially applied in high concentration, high suspended matter, height In the sewage of hardness or easy fouling, cleaning repair and maintenance is difficult；

6. aerator come off, aging, easily stifled the shortcomings of resulted in maintenance cost rising, increased sewage disposal and run into This, or even the normal operation for directly affecting sewage treatment process.

Utility model content

This utility model provides a kind of confined space efficient oxygenating system, to solve in Practical Project in Aerobic Pond aeration not , overall dissolved oxygen efficiency is low, pool bottom sludge deposits, aerator easily comes off, blocks, aging, oxygen transfer efficiency declines fast, management The problems such as safeguarding inconvenience, high cost.

The technical solution of the utility model is as follows：

A kind of efficient oxygenating system of the confined space, which includes Aeration tank, arranges along water (flow) direction some in the Aeration tank The Aeration tank is divided into some regions by deflector, the deflector, respectively according to the dissolved oxygen in the region in some regions Require the aerator of centralized arrangement varying number；The aerator is rotary-cut mixed flow aerator, the rotary-cut mixed flow aeration dress Put main by outer tube, central intake pipe, forward spiral board, reverse spiral board, diverter constitute, the bottom of the outer tube is water inlet Mouthful, top is outlet, and the central intake pipe is vertically built in the outer tube and there is air inlet, bottom to have on its top Gas outlet, the forward spiral board and reverse spiral board are fixed with the central intake pipe, the forward spiral board and described inverse To between spiral board have cushion space；The diverter is fixed on the bottom of the central intake pipe and makes to enter from the center Trachea bottom expellant gas are discharged to surrounding；Water conservancy diversion cutting is provided with above the outlet of the rotary-cut mixed flow aerator Device, the water conservancy diversion sickle are arranged on outside the central intake pipe, and between the water conservancy diversion sickle and the outlet There is buffer distance；The water conservancy diversion sickle is inverted cone, and its taper is 60-65 °.

This utility model is by adding deflector in Aeration tank so that sewage forms suitable flow velocity, and extends waterpower The time of staying, while be divided into several regions by Aeration tank；Also, the aeration of centralized arrangement varying number in each region Device, can make to be spaced apart with relief area along water (flow) direction formation aeration zone.The set-up mode and aeration of aerator centralized arrangement The set-up mode that device is evenly arranged is compared, and aerator centralized arrangement makes to form aeration zone with relief area interval point along water (flow) direction Cloth, the dissolved oxygen concentration of aeration zone are of a relatively high, and the dissolved oxygen of relief area is relatively low, under the promotion of current, high dissolved oxygen area Water flow to low dissolved oxygen area quickly, using the difference of height of oxyty, cause larger oxyty Gradient distribution, improve oxygen Transfer rate, greatly increase oxygenation capacity.The leaf of forward spiral board and reverse spiral board in this utility model, can be passed through The design of piece angle causes current to form eddy flow.Arranging the diverter makes gas outwards expand in one from the periphery of air inlet pipe Angle flow out and can increase the mixed area of gas and water.Wherein, the central intake pipe of rotary-cut mixed flow aerator is vertically interior Put so that device structure is more simplified, air flow is more smooth, and be used as air transporting arrangement simultaneously by arranging central intake pipe Using its underpart as gas outlet and aeration opening, it is possibly realized setting heavy caliber aeration opening；Meanwhile, include respectively having angled The forward spiral board and reverse spiral board of multiple blades has shearing, the effect of eddy flow, can form strong turbulent flow；Special structure When design causes the rotary-cut mixed flow aerator to run, the turbulent extent of periphery mixed liquor can be improved, and pool bottom sludge is formed Strong agitation is acted on, it is to avoid sludge anaerobic occur, strengthens oxygen transfer process significantly, in the confined space centered on the aerator Efficient oxygenation is inside realized.Additionally, rotary-cut mixed flow aerator of the present utility model is made in which without easily by the setting of said structure Part is damaged, each part is not in situation about coming off in running, rotary-cut mixed flow aerator stable performance, operation troubles pole Few, can realize substantially non-maintaining.This utility model is provided with water conservancy diversion sickle, and recognizes the conical surface pair of water conservancy diversion sickle first Oxygen transfer efficiency and oxidation effect have important function, and further by arranging water conservancy diversion sickle so as to suitable The conical surface of angle such that it is able to adapt to the flowing of gas-liquid-solid three-phase mixed liquor, and then play its water conservancy diversion, the function of diffusion.At this In the preferred implementation of utility model, in the vertical direction in region described at least one, the aerator layering is laid.Cause This, aerator layering laying only can be arranged in a region, or only some regions are arranged wherein, or Zone Full is respectively provided with. Aerator is layered laying in vertical direction, on the one hand causes vertical direction aeration uniform, solves what existing aerator was produced Bubble constantly becomes big, the problem that oxygen transfer efficiency weakens in uphill process, on the other hand also greatly enhances current immixture.

In preferred implementation of the present utility model, the water inlet of the outer tube bottom of the rotary-cut mixed flow aerator is Horn-like water inlet.Horn-like the design of intake, is conducive to water circulation.

In preferred implementation of the present utility model, the forward spiral board and the reverse spiral board interval setting, Realize that the eddy flow for entering current therein rises.

In a preferred implementation of the present utility model, on the blade of the forward spiral board and reverse spiral board respectively Multiple impact heads are distributed with.On blade, the design of impact head can form a large amount of micro-bubbles.

In preferred implementation of the present utility model, the outer surface of the water conservancy diversion sickle is distributed with multiple cutting structures Part, those cutting elements are 90-100 ° relative to the angle of the water conservancy diversion sickle, and the length of the cutting element is 3-5cm. This utility model is recognized the cutting element arranged outside water conservancy diversion sickle first relative to the angle of the water conservancy diversion sickle conical surface and is cut The length for cutting component has important function to oxygen transfer efficiency and oxidation effect, and further by arranging the cutting structure Part so as to suitable angle and length, and experiments verify that the angle and length can realize cutting element to gas-liquid-solid The cutting of three-phase mixed liquor.

The above-mentioned water conservancy diversion sickle with cutting element can realize secondary water conservancy diversion, cutting, diffusion to blend fluid of gas and water, warp Verification experimental verification, the structure can effectively lift the oxygenation capacity of aerator, with the rotation for being not provided with water conservancy diversion sickle and cutting element Cut mixed flow aerator to compare, the oxygenation capacity of the rotary-cut mixed flow aerator can lift more than 1.25 times.

In an embodiment of the present utility model, the central intake pipe of the rotary-cut mixed flow aerator by flange with outer Portion's air pipe line connection.

In preferred implementation of the present utility model, the central intake pipe of the rotary-cut mixed flow aerator goes out QI KOU is heavy caliber aeration opening, so as in aeration, aeration opening will not be blocked, and the gesture that air-flow can flow downstream, substantially reduce Air flow resistance, energy conservation and consumption reduction effects are obvious；Meanwhile, the design of heavy caliber aeration opening it also avoid diaphragm type aerator rubber The problem that glue is aging and fenestra is easily stifled.

In a preferred implementation of the present utility model, the rotary-cut mixed flow aerator is with air-blast device by removable The air pipe line for unloading connects, and the rotary-cut mixed flow aerator is arranged in the Aeration tank by support, the rotary-cut Mixed flow aerator is fixedly connected with the support, and the support is placed on bottom of pond and is not fixedly connected with the bottom of pond. By the way, the aerator installation adopted by this utility model is simple and convenient, and can place in water after installing, and by In the design for disassembly of air pipe line, rotary-cut mixed flow aerator is arranged and can be lifted, and is changed Operation, greatly facilitates operation maintenance work, and greatly reduces operating cost.

In preferred implementation of the present utility model, the water inlet bottom of the outer tube is provided with screw connection structure, uses In the outer tube of rotary-cut mixed flow aerator and the support are carried out detachable connection.Setting by this screw connection structure Put, make outer tube and the connection of support not need metal connecting piece such as bolt, screw etc., occur so as to avoid in use The deleterious situation of metalwork corrosion.Also, the structure setting of the whole device in conjunction with the rotary-cut mixed flow aerator, the whole dress Put, occur the unfavorable of metalwork corrosion in use so as to avoid Situation.

In a preferred implementation of the present utility model, at least one surface of the deflector is provided with multiple collisions Head.Specifically, can be to be equipped with multiple impact heads, or of only described deflector on two surfaces of the deflector Surface is provided with multiple impact heads.A large amount of impact heads are set on deflector, the dissolved oxygen in current small gas can be cut into again Bubble, increases gas liquid interfacial area, improves oxygen-transfer efficiency.

In a preferred implementation of the present utility model, the plurality of impact head includes spaced multiple big collisions Head and multiple little impact heads, so as to further increase gas liquid interfacial area, improve oxygen-transfer efficiency.

In some preferred implementations of the present utility model, the Aeration tank is divided into 2-3 region by the deflector.

In some preferred implementations of the present utility model, some regions at least include a leading portion, the leading portion Aerator quantity more than other regions aerator quantity.Such arrangement meets the high aerobic requirement of leading portion, real Existing oxygen supply and aerobic balance, are conducive to energy efficient, reduce operating cost.

In an embodiment of the present utility model, for typical plug-flow Aeration tank, the deflector is by the aeration Pond is divided into 3 regions, and the aerator quantity is set to " leading portion>Stage casing>Back segment ".

Compared with prior art, the beneficial effects of the utility model are as follows：

First, this utility model is by adding deflector in Aeration tank so that sewage forms suitable flow velocity, and extends Hydraulic detention time, while Aeration tank is divided into several regions, in each region, centralized arrangement varying number is (such as leading portion>In Section>Back segment) aerator, make along water (flow) direction formed aeration zone be spaced apart with relief area.According to gas-liquid mass transfer theory, oxygenation The governing factor of process is the Concentraton gradient of gas liquid interfacial area and dissolved oxygen, when aerator is evenly arranged, to each aeration For device, comparatively the dissolved oxygen concentration around which in liquid film is uniform, and the Concentraton gradient of dissolved oxygen is also considered as phase Deng, in this case, the mass transfer power of oxygen is smaller.And when aerator centralized arrangement, the dissolved oxygen concentration phase of aeration zone To higher, the dissolved oxygen of relief area is relatively low, and under the promotion of current, the water in high dissolved oxygen area flows to low dissolved oxygen area quickly, profit With the difference of height of oxyty, larger oxyty Gradient distribution is caused, the transfer rate of oxygen is improve, is greatly increased oxygenation Ability.Additionally, a large amount of impact heads are dispersed with deflector, the dissolved oxygen in current can be cut into micro-bubble again, increase gas Liquid contact area, improves oxygen-transfer efficiency.Finally, leading portion>Stage casing>The arrangement of back segment meets the high aerobic requirement in front end, Oxygen supply and aerobic balance is realized, is conducive to energy efficient, reduce operating cost；

2nd, the utility model proposes the concept of the efficient oxygenation of the confined space, takes many kinds of measures, significantly between reinforcing gas-liquid Mass transport process：(1) new-type rotary-cut mixed flow aerator is adopted, and aeration effect is good, can form a large amount of micro-bubbles during operation；By It is rotary water current in the rotary-cut mixed flow aerator water outlet, and device bottom persistently intakes, top continues water outlet, therefore can expose The strong circulating water flow centered on aerator is formed in gas pond, improves the turbulent extent and current of periphery mixed liquor to pond The strong agitation effect of bottom sludge, it is to avoid sludge anaerobic occur, strengthen oxygen transfer process significantly, in having centered on aerator Limit realizes efficient oxygenation in space；(2) in vertical direction the multi-tier arrangement of aerator and aeration zone and relief area setting, one Aspect causes vertical direction aeration uniform, and the bubble for solving existing aerator generation constantly becomes big, oxygen transfer in uphill process The problem that efficiency weakens, on the other hand also greatly enhances current immixture, in the confined space that aeration zone is combined with relief area Dissolved oxygen efficiency is inside significantly improved, and reducing energy consumption is cost-effective；(3) by arranging deflector, when on the one hand extending hydraulic retention Between, on the other hand it is divided into some regions, zones of different to arrange the aerator of varying number Aeration tank, balances oxygen supply and need Oxygen, realizes that distribution according to need, whole cell body solve existing aerating system molten equivalent to being combined by a large amount of efficiently oxygenation units The not high problem of oxygen efficiency, agrees with energy-saving policy requirements and cost-effective enterprise demand completely；

3rd. the aerator adopted by this utility model is easy for installation, and can place into after installing in water, when replacing is safeguarded Operation is drained without the need for stopping production；

4th. without easily worn part in the aerator that this utility model is adopted, be not in element falling in running Situation；

5th. the aerator that this utility model is adopted has heavy caliber aeration opening, in aeration, will not block, Er Qieqi The gesture that stream can flow downstream, greatly reduces air flow resistance, and energy conservation and consumption reduction effects are obvious；Meanwhile, heavy caliber aeration opening sets Meter also avoid the presence of diaphragm type aerator diaphragm is aging and easily stifled situation.

6th. arrive Article 5 with reference to the above-mentioned the 3rd, the aerator that this utility model is adopted using heavy caliber aeration opening and Inside, without easily worn part, is not in cause whole device failure (existing diaphragm type aerator as some parts come off Film easily fall, film is failed once falling device), material ageing, Pore Blocking the problems such as, stable performance, operation troubles are few, Substantially can realize non-maintaining, even if in need, also because device can be lifted, without the need for stop production drain operation, greatly facilitate fortune Row maintenance work, and greatly reduce operating cost；

7th, the rotary-cut mixed flow aerator that this utility model is adopted is provided with water conservancy diversion sickle, outside the water conservancy diversion sickle Surface is provided with cutting element, and water conservancy diversion sickle and being equipped with for cutting element both structures can effectively lift aerator Oxygenation capacity, compared with the rotary-cut mixed flow aerator for being not provided with water conservancy diversion sickle and cutting element, its oxygenation capacity can be lifted 1.25 more than again.

Certainly, implement arbitrary product of the present utility model to it is not absolutely required to while reaching all the above advantage.

Description of the drawings

Fig. 1 is the schematic diagram of aerating system in prior art；

Fig. 2 illustrates for the vertical direction internal structure arrangement of the efficient oxygenating system of the confined space of this utility model embodiment Figure；

Fig. 3 is the connection diagram of the part for being numbered 9 and 7 in Fig. 2；

Structural representations of the Fig. 4 for the deflector of the efficient oxygenating system of the confined space of this utility model embodiment；

Diverters of the Fig. 5 for the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment Set location schematic diagram relative to central intake pipe；

Forward rotations of the Fig. 6 for the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment The structural representation of stream plate；

Reverse rotations of the Fig. 7 for the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment The structural representation of stream plate；

Forward rotations of the Fig. 8 for the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment The schematic shapes of the impact head arranged on stream plate and/or reverse spiral board；

Fig. 9 shows for the structure of the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment It is intended to；

Water conservancy diversion of the Figure 10 for the rotary-cut mixed flow aerator of the efficient oxygenating system of the confined space of this utility model embodiment The schematic shapes of the cutting element arranged on sickle.

Wherein, 1 water inlet pipe；2 Aeration tanks；3 aeration zones；4 relief areas；5 deflectors；6 outlet pipes；7— Rotary-cut mixed flow aerator；8 aerators；9 airflow pipes；9-1 air pipe lines；9-2 air pipe lines；10 is little Impact head (on deflector)；11 big impact head (on deflectors)；12 flanges；13 air inlet pipe；14 outlets；Outside 15 Cylinder；16 forward spiral boards；17 rising passways；18 reverse spiral boards；19 diverters；20 horn-like water inlets； 21 fixing components；22 impact heads (on spiral board)；23- screw connection structures；24- water conservancy diversion sicklies；25- cutting elements.

Specific embodiment

In view of existing aerator inevitably to occur aeration in Aerobic Pond in actual moving process uneven, overall Dissolved oxygen efficiency is low, and pool bottom sludge deposits anaerobism, comes off because of the parts of aerator, oxygen caused by film blocking, device are aging etc. The problems such as utilization rate dramatic decrease, high energy consumption, high operating cost, someone by automatic control means realize aerating system run on demand with Reducing energy consumption, someone's research and development equally have higher oxygen utilization rate but there is no the new-type aerator of existing aerator defect. All these means are made a general survey of, it is its essence to improve dissolved oxygen efficiency.The height of dissolved oxygen efficiency, with Aeration tank form, aerator In construction and arrangement mode, Aeration tank, flow-shape, sewage quality etc. are closely related.This utility model is to aerator The aspects such as form, arrangement, Aeration tank form, flow-shape carry out multidimensional improvement, propose the general of the efficient oxygenation of the confined space Read, form a kind of efficient oxygenating system for being different from existing microporous diaphragm aeration.

This utility model is exposed above-mentioned not enough and providing one kind has in actual moving process for existing aerating system Limit space-efficient oxygenating system, can be applicable to the Aerobic biological process unit of all types of industries waste water and sanitary sewage.Below with Concrete drawings and Examples are further described to this utility model.Wherein, in accompanying drawing each part and device shape and chi Very little ratio is only used as illustrating, and its shape and relative scale are not drawn in strict accordance with true form and ratio.

Embodiment

The present embodiment adopts new-type aerator, and merges concentration aeration, subregion oxygen-supplying technology, there is provided a kind of confined space Efficient oxygenating system.

Refer to Fig. 2, a kind of efficient oxygenating system of confined space that the present embodiment is provided, including：

Aeration tank (2),

Several deflectors (5) are added along water (flow) direction in Aeration tank (2), Aeration tank (2) is divided into along water (flow) direction Some regions (are tri- regions of I, II, III as shown in Figure 2, can also be two regions or more multi-region in other embodiments Domain), according to the aerator of the concrete condition centralized arrangement varying number of oxygen demand in each region, specifically expose in the present embodiment Gas device is rotary-cut mixed flow aerator (7).Rotary-cut mixed flow aeration according to the concrete condition centralized arrangement varying number of oxygen demand Device balances oxygen supply and aerobic, realization distribution according to need, is conducive to energy efficient, reduction operating cost, and centralized arrangement Mode is also formed aeration zone (3) along water (flow) direction and is spaced apart with relief area (4).

Due to generally, in Aeration tank, leading portion oxygen consumption is more than other regions, it is therefore preferable that the aerator in leading portion arrangement is more In other regions, such as typical plug-flow Aeration tank, microorganism oxygen consumption within front half section pond holds accounts for 70%, second half section in-fighting Oxygen accounts for 30%, designs oxygen-supplying amount distribution according to this, and it can be " leading portion (region I) that aerator quantity is arranged>Stage casing (region II)>Back segment (region III) "；

Meanwhile, at least one region or in some regions or in all regions, rotary-cut mixed flow aerator (7) is being hung down Nogata layered arrangement upwards, as shown in Figures 2 and 3, in the present embodiment, rotary-cut mixed flow aerator (7) in all regions It is divided into two-layer arrangement.Compressed air is provided by aerator (8), and is delivered to rotary-cut mixed flow aeration dress by airflow pipe Put (7).Viewing angles in due to Fig. 2 are difficult to the real connection for embodying airflow pipe 9 and rotary-cut mixed flow aerator (7) Relation, therefore, the airflow pipe for being numbered 9 in Fig. 2 only indicates that air is input in Aeration tank, and is numbered 9 sky Feed channel does not represent the actual shape of pipeline, and the airflow pipe for being numbered 9 in fig. 2 and the rotary-cut mixed flow for being numbered 7 expose Especially annexation is not showed relative position relation between device of air, and this phenomenon in Fig. 2 is not represented Do not connect between the two.Specifically, shown in Fig. 2, being numbered for meaning and is numbered 7 rotary-cut at 9 airflow pipe Relative position relation and annexation details between mixed flow aerator is shown in Figure 3.Airflow pipe 9 may include Air main and air arm.In figure 3, air main (9-3) is by air arm (9-1), (9-2) and rotary-cut mixed flow aeration Device (7) connects, during installation, only need to be fixed with air arm (9-2) by rotary-cut mixed flow aerator (7), and such as rotary-cut need to be mixed Stream aerator (7) is lifted out outside pond, need to only disconnect the connection of air arm (9-2) and air arm (9-1).

Deflector (5)：

Deflector (5) is fixed on the pool wall of Aeration tank (2), in the present embodiment by such as draw-in groove etc., deflector (5) Two surfaces are dispersed with a large amount of impact heads, in other embodiments, or deflector a wherein surface distributed a large amount of Impact head, or some deflectors are that two surfaces arrange impact heads, some deflectors are that a surface arranges impact head, this reality This is not particularly limited to new.Those impact heads may include spaced multiple little impact heads 10 and multiple big impact heads 11, as shown in figure 4, the dissolved oxygen in current can be cut into micro-bubble by again, increase gas liquid interfacial area, improve oxygenation Efficiency.

Rotary-cut mixed flow aerator (7)：

Fig. 9 is referred to, rotary-cut mixed flow aerator (7) is main by outer tube (15), forward central intake pipe (13), spiral board (16), reverse spiral board (18), diverter (19) composition, forward have buffering between spiral board (16) and reverse spiral board (18) Space (17).Multiple impact heads (21) are distributed with the blade of forward spiral board (16) and reverse spiral board (18) respectively, A kind of typical shape of the impact head is as shown in figure 8, the impact head (21) is cone, and its bottom surface and the forward eddy flow The blade of plate (16) or reverse spiral board (18) is mutually fixed.The bottom of outer tube (15) is water inlet, and top is outlet, institute State central intake pipe (13) be vertically built in the outer tube (15) and the central intake pipe (13) top have air inlet, under There is gas outlet, diverter (19) to be fixed on the bottom of the central intake pipe (13) and make from the central intake pipe in portion (13) bottom expellant gas are discharged to surrounding.Wherein, central intake pipe (13) is by flange (12) and air pipe line (9-2) phase Even.The design of intake of outer tube (15) bottom into horn-like water inlet (20), forward spiral board (16) and reverse spiral board (18) Fixed with central intake pipe (13), specifically, forward spiral board (16) and reverse spiral board (18) are arranged and are fixed on air feeding in center The outside of pipe (13).Diverter (19) is connected with central intake pipe (13), diverter (19) enters at cross section Shang Yu centers The position relationship of the bottom of trachea (13) refers to Fig. 5, and diverter (19) is the center positioned at the bottom of central intake pipe (13) Position such that it is able to so that the gas flowed out from central intake pipe (13) is outwards flowed out in an angle for expanding along tube wall, such as Shown in Fig. 9.Mixing wastewater with air liquid passes through reverse spiral board (18) cushion space from the bottom horn-like water inlet (20) of outer tube (17) forward the multiplet eddy flow of spiral board (16) rises, and constantly by forward spiral board (16) and reverse spiral board (18) Impact head (21) (example as shown in Figure 5) cutting of upper distribution, forms a large amount of micro-bubbles, eventually through going out for outer tube (15) top The mouth of a river (14) eddy flow sprays, and produces certain agitaion to the water above outlet (14).

During rotary-cut mixed flow aerator (7) aeration, air is entered and from outlet from the air inlet of central intake pipe (13) Mouth is discharged, and enters in the outer tube of aerator and rotate rising afterwards, and air-flow causes the density of local water body in uphill process Decline, due to there is density contrast, the current of bottom are up gushed from water inlet (20), blend fluid of gas and water is in forward spiral board (16) and inverse It is cut to spiral board (18) and thereon in the presence of a large amount of impact heads (21) of EDS maps, forms a large amount of micro-bubbles, reach The purpose of air water high efficient mixed, subsequent blend fluid of gas and water are spouting from from outlet (14), due to the velocity head of now liquid Switch to pressure head so that air is quickly dissolved in water, while generating small gas in a large number in the presence of water conservancy diversion sickle 15 again Bubble, and the blend fluid of gas and water diffusion of atomization is increased, at the same time recycle stream can be formed in the region centered on aerator, The stirring action to bottom section can be strengthened significantly.From in terms of above-mentioned aeration process, its principle is similar with jet apparatus, is equally all Carry out mixing wastewater with air, experience injection, mixing, the process of water conservancy diversion.Differring primarily in that between the two, this utility model injection It is air, because density contrast is so as to realize with purpose of the gas with water (gas stripping), and the gesture that air-flow can flow downstream, substantially reduce exposure Gas energy consumption, and jet apparatus are then injection liquid, form negative pressure so as to drawing air into and realize by the flow at high speed of liquid Cutting mixing, aeration energy consumption are high.Due to there is similarity in principle with jet apparatus, and there is above-mentioned difference, therefore we Aerator operation principle of the present utility model is referred to as gas stripping type jet current principle.

The close aeration dress of the alternative existing conventional film chip aerator of rotary-cut mixed flow aerator (7) and function Put.

In the present embodiment, by the integrally-built setting of rotary-cut mixed flow aerator (7), especially central intake pipe Arrange, rotary-cut mixed flow aerator (7) is set to heavy caliber aeration opening, therefore, in the present embodiment, described The gas outlet of the central intake pipe (13) of rotary-cut mixed flow aerator (7) is set to heavy caliber aeration opening.Heavy caliber aeration The setting of mouth can be realized blocking in aeration, and the gesture that air-flow can flow downstream, greatly reduce air flow resistance, Energy conservation and consumption reduction effects are obvious；Meanwhile, the design of heavy caliber aeration opening it also avoid diaphragm type aerator ageing of rubber and fenestra is easy Stifled problem.

In the present embodiment, by the integrally-built setting of rotary-cut mixed flow aerator (7), the rotary-cut mixed flow aeration is made Without easily worn part in device (7), be not in situation that parts come off in running, stable performance, operation troubles are few, Substantially can realize non-maintaining.

In the present embodiment, rotary-cut mixed flow aerator (7) is not fixed on bottom of pond, but from bottom of pond about 20-30cm It is configured, is fixed by the component (21) and the support that arrange thereon, support is placed on bottom of pond then, but support does not have Bottom of pond is fixed on, but the power formed and support between by air arm (9-2) is allowed to maintain static.During installation, only need by Even the central intake pipe (13) of standoff aerator (7) is put into pond after flange (12) and air arm (9-2) are fixed In, simplification facilitates installation procedure.Rotary-cut mixed flow aerator (7) itself is generally not in any problem, substantially Non-maintaining, if meet other situations and need to be changed or pulled down, it is only necessary to by air arm (9-1) and air arm (9-2) flange between is pulled down, and is then brought up rotary-cut mixed flow aerator (7) by air arm (9-2), is changed Operation is drained without the need for stopping production when safeguarding, maintenance program simplicity is changed, operation maintenance work is greatly facilitated.

In the present embodiment, the rotary-cut mixed flow aerator that the efficient oxygenating system of the confined space is arranged also is included with bottom Part：

Fig. 9 is referred to, in the present embodiment, above the outlet 14 of the rotary-cut mixed flow aerator 7, water conservancy diversion is provided with Sickle 24, the water conservancy diversion sickle 24 are arranged on outside the central intake pipe 13, and the water conservancy diversion sickle 24 and institute State；The water conservancy diversion sickle 24 is inverted cone, and its taper is 60-65 °. The present embodiment adds water conservancy diversion sickle in the outlet of rotary-cut mixed flow aerator first, and recognizes the cone of water conservancy diversion sickle There is important function in the face of oxygen transfer efficiency and oxidation effect, and further by arranging water conservancy diversion sickle so as to suitable The conical surface of suitable angle such that it is able to adapt to the flowing of gas-liquid-solid three-phase mixed liquor, and then play its water conservancy diversion, the function of diffusion.

Further, in the present embodiment, the outer surface of the water conservancy diversion sickle 24 is distributed with cutting element 25, described cuts The angle that component 25 is cut relative to the water conservancy diversion sickle 24 is 90-100 °, and the length of the cutting element is 3-5cm.Cutting A kind of concrete shape of component 25 refers to Figure 10, and the cutting element 25 is vertebral body, and water conservancy diversion sickle is fixed in its bottom surface 24 outer surface.This utility model recognizes the cutting element arranged outside water conservancy diversion sickle 24 relative to water conservancy diversion sickle first The length of 24 angle and cutting element 25 has important function to oxygen transfer efficiency and oxidation effect, and further passes through The cutting element 25 is set so as to suitable angle and length, and experiments verify that the angle and length can be realized The cutting of sewage gas-liquid-solid three-phase mixed liquor of the cutting element 25 pairs containing sludge.

The water conservancy diversion sickle 24 with cutting element 25 of the present embodiment can be realized secondary water conservancy diversion, cut to blend fluid of gas and water Cut, spread, experiment proves that, the structure can effectively lift the oxygenation capacity of aerator, be not provided with water conservancy diversion sickle 24 and The aerator ratio of cutting element 25, the oxygenation capacity of the rotary-cut mixed flow aerator 7 of the present embodiment can lift more than 1.25 times.

Additionally, in the present embodiment, the central intake pipe 13 of the rotary-cut mixed flow aerator 7 is by flange 12 and outside Air pipe line connects, and the height (equivalent to the length of central intake pipe 13) of the flange 12 is set to from outlet 16 Swirl injection and the current that go out do not produce retardation.

In addition, in the present embodiment, 20 bottom of horn-like water inlet is provided with screw connection structure 23, for by rotary-cut Outer tube 15 and the support of mixed flow aerator carries out detachable connection.By the setting of this screw connection structure, outer tube 15 is made Connection with support does not need metal connecting piece such as bolt, screw etc., occur in use metalwork corruption so as to avoid The deleterious situation of erosion.Also, the structure setting of the whole device in conjunction with the rotary-cut mixed flow aerator, the whole device do not make With metal connecting piece such as bolt, screw etc., so as to avoid the deleterious situation for occurring metalwork corrosion in use.

The efficient oxygenating system of the confined space of the present embodiment is used for the flow process of Air Exposure and is exemplified below：

Fig. 2 is referred to, sewage enters Aeration tank (2) by water inlet pipe (1), sequentially passes through the aerobic place in I, II, III region Reason, its water outlet access follow-up structures by outlet pipe (6).The setting of deflector (5) causes sewage form suitable flow velocity, prolongs Long hydraulic detention time, while be divided into zones of different by Aeration tank (2).Also, required according to the dissolved oxygen of above-mentioned zones of different Rotary-cut mixed flow aerator (7) of centralized arrangement varying number, balances oxygen supply and aerobic, realization distribution according to need.Aerator exists Vertical direction higher slice is laid, and on the one hand causes vertical direction aeration uniform, solves the bubble of existing aerator generation upper Constantly become big, the problem that oxygen transfer efficiency weakens during rising, on the other hand also greatly enhance current immixture.In addition, exposing The centralized arrangement of gas device causes to form aeration zone (3) and relief area (4) in each region, the dissolved oxygen concentration phase of aeration zone (3) To higher, the dissolved oxygen of relief area (4) is relatively low, and under the promotion of current, the water in high dissolved oxygen area flows to low dissolved oxygen area quickly, Using the difference of height of oxyty, larger oxyty Gradient distribution is caused, the transfer rate of oxygen is improve, is greatly increased and fill Oxygen ability.When deflector (5), dissolved oxygen therein is touched in a large number the sewage come from relief area by the upper distribution of deflector (5) Ram (10,11) cut into micro-bubble again, increase gas liquid interfacial area, improve oxygen-transfer efficiency.This utility model is adopted The central intake pipe (13) of rotary-cut mixed flow aerator (7) be connected with extraneous air pipeline (9-2) by flange (12), by rousing The compressed air that blower fan (8) is provided is entered from central intake pipe (13), and is discharged from its underpart gas outlet, the compressed air of discharge Spread to surrounding by the shunting action of diverter (19), and strength attracts current to mix from horn-like water inlet (20) entrance rotary-cut Stream aerator (7), forward spiral board (16) is multiple by reverse spiral board (18) cushion space (17) for mixing wastewater with air liquid Structure spiral, goes up the impact head (21) of arrangement straggly through spiral board (16,18) in mixing wastewater with air liquid eddy flow uphill process Impact several times shearing, countless tiny bubbles can be formed, considerably increase gas-water contact area, and strong mixed flow state is big Mass-transfer efficiency is improve greatly, and finally the turbulent flow containing countless tiny bubbles is sprayed from outer tube (15) top delivery port (14) eddy flow, And 25 water conservancy diversion of cutting element of the conical surface through water conservancy diversion sickle 24 and its appearance EDS maps spreads with cutting and rapidly, realizes sewage The purpose of efficient oxygenation.The powerful circulating water flow centered on rotary-cut mixed flow aerator (7) and disorderly formed in aeration process Stream, even more serves good agitaion to water body, it is to avoid the sludge often occurred in Practical Project deposits in bottom of pond portion Situation, also avoids the deleterious situation of local anaerobic.

The bigbore aeration opening and the gas force and velocity of a current for being downstream of rotary-cut mixed flow aerator (7) greatly reduces sky Air-flow dynamic resistance, significantly reduces energy consumption, and continuous shearing of the impact head to bubble forms countless tiny bubbles, considerably increase gas Water engaging surface is accumulated, and last gas-water turbulent flow rotation sprays, and rapid diffusion substantially increases service area.The aerator is solved Service life that existing aerator is present is short, difficult in maintenance, under high energy consumption, the coefficient of oxygen utilization that causes because of blocking, the reason such as aging The problems such as dropping fast.In a word, whole cell body solves existing aerating system and exposes equivalent to being combined by a large amount of efficiently oxygenation units The not high problem of uneven, the overall dissolved oxygen efficiency of gas, agrees with energy-saving policy requirements and cost-effective enterprise demand completely.

This utility model preferred embodiment disclosed above is only intended to help and illustrates this utility model.Preferred embodiment is simultaneously Without all of details of detailed descriptionthe, it is only described specific embodiment also not limit the utility model.Obviously, according to this theory The content of bright book, can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably Principle of the present utility model and practical application is explained, so that skilled artisan can be best understood by and utilize this Utility model.This utility model is only limited by claims and its four corner and equivalent.

Claims (10)

1. sets along water (flow) direction in the efficient oxygenating system of a kind of confined space, it is characterised in that including Aeration tank, the Aeration tank Some deflectors are put, the Aeration tank is divided into some regions by those deflectors, respectively according to the region in some regions Dissolved oxygen require centralized arrangement varying number aerator；The aerator be rotary-cut mixed flow aerator, the rotary-cut mixed flow Aerator mainly by outer tube, central intake pipe, forward spiral board, reverse spiral board, diverter constitute, the bottom of the outer tube For water inlet, top is outlet, the central intake pipe is vertically built in the outer tube and its top have air inlet, under Portion has gas outlet, and the forward spiral board and reverse spiral board are fixed with the central intake pipe, the forward spiral board and There is between the reverse spiral board cushion space；The diverter is fixed on the bottom of the central intake pipe and makes from described Air feeding in center bottom of the tube expellant gas are discharged to surrounding；Water conservancy diversion is provided with above the outlet of the rotary-cut mixed flow aerator Sickle, the water conservancy diversion sickle are arranged on outside the central intake pipe, and the water conservancy diversion sickle and the outlet Between have buffer distance；The water conservancy diversion sickle is inverted cone, and its taper is 60-65 °.

2. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that hanging down in region described at least one Nogata upwards, lay by the aerator layering.

3. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the rotary-cut mixed flow aerator The water inlet of outer tube bottom is horn-like water inlet.

4. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the forward spiral board and described inverse To spiral board interval setting.

5. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the forward spiral board and reverse rotation Multiple impact heads are distributed with respectively on the blade of stream plate.

6. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the outer surface of the water conservancy diversion sickle Multiple cutting elements are distributed with, those cutting elements are 90-100 ° relative to the angle of the water conservancy diversion sickle, the cutting structure The length of part is 3-5cm.

7. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the rotary-cut mixed flow aerator The gas outlet of the central intake pipe is heavy caliber aeration opening.

8. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that the rotary-cut mixed flow aerator with Air-blast device is connected by dismountable air pipe line, and the rotary-cut mixed flow aerator is arranged on the exposure by support In gas pond, the rotary-cut mixed flow aerator is fixedly connected with the support, and the support be placed on bottom of pond and not with institute State bottom of pond to be fixedly connected.

9. the efficient oxygenating system of the confined space as described in claim 1 or 3, it is characterised in that under the water inlet of the outer tube Portion is provided with screw connection structure.

10. the efficient oxygenating system of the confined space as claimed in claim 1, it is characterised in that for typical plug-flow Aeration tank, The Aeration tank is divided into leading portion, stage casing, 3 regions of back segment by the deflector, and the aerator quantity is set to " leading portion >Stage casing>Back segment ".