CN209178095U - Efficient jet aerator - Google Patents

Efficient jet aerator Download PDF

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Publication number
CN209178095U
CN209178095U CN201822058641.9U CN201822058641U CN209178095U CN 209178095 U CN209178095 U CN 209178095U CN 201822058641 U CN201822058641 U CN 201822058641U CN 209178095 U CN209178095 U CN 209178095U
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China
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mixing chamber
low
air
compressed air
pressure air
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CN201822058641.9U
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Chinese (zh)
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丁斌
王艨
陈晓菊
张乐宇
郝泽源
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China 22MCC Group Corp Ltd
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China 22MCC Group Corp Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The utility model provides a kind of efficient jet aerator, and aerator is equipped with recirculated water interface, and recirculated water interface is located on the left of compressed air mixing chamber and is connected with the recirculated water spout in compressed air mixing chamber;It is equipped with low-pressure air mixing chamber on the right side of compressed air mixing chamber, is equipped with two-stage injection mouth in low-pressure air mixing chamber;Dissolved oxygen mixing chamber is equipped on the right side of low-pressure air mixing chamber, low-pressure air mixing chamber and the space separating board of dissolved oxygen mixing chamber are equipped with flowing hole;Turbulent flow generator tube, the affixed air water release spout in turbulent flow generator tube outer end are equipped in dissolved oxygen mixing chamber;The compressed air mixing chamber passes through compressed air channel external compressed air;For the low-pressure air mixing chamber by the external air blower aeration in low-pressure air channel, the mixing wastewater with air liquid that this scheme ejects has bigger kinetic energy, and more violent to the water body stirring in horizontal direction, dead angle is small, and structure is violent to the cutting of gas, and the bubble of generation is more.

Description

Efficient jet aerator
Technical field
The utility model relates to industrial production aeration in sewage treatment equipment, and in particular to a kind of efficient jet aerator.
Background technique
Jet aerator is a kind of aerator for integrating air-breathing and hybrid reaction, it is by liquid jet to gas It is aspirated and is compressed, realization brings air/oxygen in water into be achieved the purpose that be oxygenated to sewage.Since jet-flow aeration equipment is simultaneous Have oxygenation and plug-flow effect, it is high that dynamic efficiency ratio turns brush class aerator, safeguard it is simpler than micro-pore aeration, early in external down-stream It is used in factory.And it is domestic later to the research of jet-flow aeration method, ejector series of the profession for sewage treatment has not yet been formed, though So wastewater treatment in China jet Aeration Technology and It has certain development in recent years, but there are also very big gaps with developed country, main Have the following problems: for conventional fluidic aerator only through a jet stream, energy regenerating is lower, therefore coefficient of oxygen utilization, dynamic efficiency It is relatively low;Stirring and plug-flow are ineffective, and complete big serial jet-flow aeration equipment has not yet been formed;Aeration performance operates therewith Time increases and decays.
Traditional jet aerator has self-priming and two kinds of Gas feeding at present:
One, Self-priming jet aeration device is made of immersible pump and ejector.When dive under water pump work when, high pressure spray water flow Jet stream is generated by ejector nozzle, when by the trunnion of diffuser entrance, generates negative pressure in mixing wastewater with air room, automatically will Air more than liquid level is sucked by the conduit for leading to atmosphere.After being sufficiently mixed with water, the mixed liquor of air and water is from ejector It sprays, carries out mixing oxygenation with the water body in pond, and form circulation in pond.
Two, air supply jet aerator is generally located on aeration bottom of pond portion, by pressurized water tubes, compressed air hose or air blower Air hose composition.The air and pressure (hydraulic) water of feeding spray after being sufficiently mixed to horizontal direction, form jet stream and area is mixed, right Water body oxygenic aeration.
The disadvantage is that not being suitable for deep water aeration, suitable middle or small sewage treatment is aerated Self-priming jet aeration device.And it passes The air supply jet aerator of system is the disadvantage is that there is aeration dead angle, and oxygen transfer amount is lower than micro-hole aerator, and it is relatively high to consume energy, and has Larger aeration dead angle.
Utility model content
The utility model aim to solve the problem that existing aerator there are the problem of, a kind of optimization jet-flow aeration at no dead angle is provided Device, and turbulent flow is increased by the design to nozzle, increase the effect of bubble.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of efficient jet aerator, aerator are equipped with recirculated water interface, and recirculated water interface is located at compressed air mixing chamber Left side and it is connected with the recirculated water spout in compressed air mixing chamber;Low-pressure air is equipped on the right side of compressed air mixing chamber to mix Chamber, low-pressure air mixing chamber is interior to be equipped with two-stage injection mouth;Dissolved oxygen mixing chamber is equipped on the right side of low-pressure air mixing chamber, low-pressure air is mixed The space separating board for closing chamber and dissolved oxygen mixing chamber is equipped with flowing hole;Turbulent flow generator tube, turbulent flow generator tube are equipped in dissolved oxygen mixing chamber The affixed air water release spout in outer end;The compressed air mixing chamber passes through compressed air channel external compressed air;The low pressure Air mixing chamber passes through the external air blower aeration in low-pressure air channel.
The utility model is compared with existing aerator, right the advantage is that: 1. because there is the mixed flow effect of " two gas, one liquid " The cutting of gas is more violent, and the bubble of generation is more, increases oxygen transfer rate.2. being made due to compressed air and the recirculated water of pressurization The mixed liquor that must be ejected has bigger kinetic energy, more violent to the water body stirring in horizontal direction, and dead angle is small, in large radius Advantage is more obvious in aeration tank.3. turbulent flow generator tube and air water release spout inner wall are provided with threaded line, so that high speed passes through Mixed liquor form the kinetic energy of a rotation, while frictional force makes mixed liquor speed reduce about 30%, and it is abundant to be conducive to stirring And extend bubble residence time in water.Mixed liquor is after leaving air water release spout, and because of inertia, Scroll-tupe stirs water body, Stirring region is increased, the dead angle of conventional fluidic aerator is reduced, and increases turbulent flow, oxygen transfer rate obviously increases.
Specifically, the low-pressure air mixing cavity outer wall was equipped with port, it is oblique in two-stage injection mouth that this crosses port setting Rear, low-pressure air channel cross port by this and ventilate into low-pressure air mixing chamber.
Preferably, the turbulent flow generator tube and air water release spout inner wall set helicitic texture.This structure can increase cutting gas Body and bubble increase aqueous vapor contact area, and then increase oxygen transfer rate.
Preferably, this aerator is equipped with shelving, and with shelving including steel bracket, steel mid-stent is equipped with circulating water pipe Road;Steel frame upper is aerated wind conveyance conduit equipped with air blower;Pressure is set on the downside of air blower aeration wind conveyance conduit mounting bracket Contracting air hose;The circulating water pipeline, compressed air hose, air blower aeration wind conveyance conduit are separately connected recirculated water interface, pressure Contracting air duct and low-pressure air channel.
Detailed description of the invention
Fig. 1 is this jet aerator outline drawing;
Fig. 2 is jet aerator structural schematic diagram;
Fig. 3 is jet aerator top view;
Fig. 4 is the utility model use state with reference to figure.
In figure: recirculated water interface 1, compressed air interface 2, aeration interface 3, turbulent flow generator tube 4, low-pressure air channel 5, pressure Contracting air duct 6, compressed air mixing chamber 8, two-stage injection mouth 9, low-pressure air mixing chamber 10, crosses port at recirculated water spout 7 11, flowing hole 12, dissolved oxygen mixing chamber 13, air water release spout 14, air blower aeration wind conveyance conduit 15, compressed air hose 16, Circulating water pipeline 17.
Specific embodiment
Jet aerator provided by the utility model is intended to optimize the aeration Dead Core Problems of jet aerator, while also to spray Row improves when mouth structure, increases aerator by turbulent flow, increases bubble.
This jet aerator is designed as two-stage twin-jet nozzle jet aerator, in conjunction with the principle of two kinds of traditional jet aerators And advantage, using the hybrid mode of " two gas, one liquid "." two gas " refers to that compressed air and air blower are supplied gas, and " liquid " refers to circulation Water pump sends treatment sewage.It is mixed by two not good liquor gas, abundant dissolved oxygen.Due to the use of compressed air, reduce air blower Usage amount, reduce the load of air blower, and then reduce aeration load, aeration load is the percentage of sewage treatment plant's total load 50~70%, therefore reduce the corresponding economy of air blower load it is considerable.
In conjunction with attached drawing 1-4, the aerator specific structure of the utility model is:
A kind of efficient jet aerator, aerator are equipped with recirculated water interface 1, and recirculated water interface 1 is located at compressed air mixing It is connected on the left of chamber 8 and with the recirculated water spout 7 in compressed air mixing chamber 8;It is empty that low pressure is equipped on the right side of compressed air mixing chamber 8 Gas mixing chamber 10, low-pressure air mixing chamber 10 is interior to be equipped with two-stage injection mouth 9;Dissolved oxygen is equipped on the right side of low-pressure air mixing chamber 10 to mix The space separating board of chamber 13, low-pressure air mixing chamber 10 and dissolved oxygen mixing chamber 13 is equipped with flowing hole 12;It is set in dissolved oxygen mixing chamber 13 There are turbulent flow generator tube 4, the affixed air water release spout 14 in 4 outer end of turbulent flow generator tube.
The scheme of this programme external " two gas " is: 1. compressed air mixing chamber 8 is empty by the external compression of compressed air channel 6 Gas, it is clear that the compressed air interface 2 for being used for external compressed air air inlet will be equipped on compressed air channel 6.2. low pressure is empty Gas mixing chamber 10 is aerated by the external air blower in low-pressure air channel 5, and same low-pressure air channel 5 also is provided with for external low Press the aeration interface 3 of air.
From figure 2 it can be seen that the outer top of low-pressure air mixing chamber 10 was equipped with port 11, this is crossed port 11 and is arranged two Grade 9 water (flow) direction of jet port rear ramp, low-pressure air channel 5 by this cross port 11 into low-pressure air mixing chamber 10 lead to Gas.
Preferably, the inner wall of the turbulent flow generator tube 4 and air water release spout 14 sets helicitic texture.This internal screw thread turbulent flow Generator tube and internal screw thread air water release spout can increase turbulent flow, increase cutting gas and bubble, increase aqueous vapor contact area, in turn Increase oxygen transfer rate.
Efficient jet aerator is made of FRP material, and bracket uses stainless steel 304 material, and maintenance is simple.
The angle of flare angle design of air water release spout 14 is less than or equal to 20 °.Example air water provided by the utility model Release spout angle design is 4~8 °.Internal screw thread is circular helix, and lead is about the half of length of pipeline.It is described Length of pipeline is the length of turbulent flow generator tube or air water release spout
With reference to the parameter of pump capacity and lift when the diameter of the recirculated water spout 7 of this aerator design.Easy calculating Formula are as follows:
In formula, Qs is pump capacity, m3/h;H is pump head, mH2O (meter water column);D is water nozzle diameter, m.
This aerator is additionally provided with shelving, and with shelving including steel bracket, steel mid-stent is equipped with circulating water pipeline 17; Steel frame upper air blower is aerated wind conveyance conduit 15;Compressed air is set on the downside of air blower aeration wind conveyance conduit mounting bracket Pipe 16;The circulating water pipeline 17, compressed air hose 16, air blower aeration wind conveyance conduit 15 are separately connected the circulation of aerator Water connects 1 mouthful, compressed air channel 2 and low-pressure air channel 3.
Compressed air pressure used in the utility model is 4bar~6bar.Compressed air pressure is adjusted within this range Power, thus the yield of adjustable minute bubbles.
The working process of the utility model is as follows:
1) pressure (hydraulic) water that water circulating pump is sent injects compressed air mixing chamber, while generating negative pressure;
2) it send compressed air to compressed air mixing chamber with air compressor machine, is sufficiently mixed with water with pressure;
3) low-pressure air mixing chamber is reached by two-stage injection mouth by mixed steam water interface, jet port rear is formed Negative pressure is sent into air from port sucking air blower is crossed, carries out secondary mixing;
4) it again through the abundant dissolved oxygen of dissolved oxygen mixing chamber after mixing, then through internal screw thread turbulent flow generator tube, then discharges and sprays through air water Mouth ejects.
Internal screw thread is arranged in this programme at turbulent flow generator tube and air water release spout, compares with light pipe, and pipe internal screw thread can make Fluid rotary enhances the disturbance of fluid near tube wall inner face.Liquid in pipe and gas, which flow through screwed pipe, will form whirlpool and strong Strong collision, the effect by screw thread generate rotation, and the steam bubble generated on inside pipe wall face can also be rotated toward the liquid of movement Body is taken away in time, this structure dramatically increases oxygen transfer rate and oxygen content.
This efficient jet aerator not Shi He deep water (6m or more) aeration, the advantage is that: 1. because there is " two gas, one liquid " Mixed flow effect, more violent to the cutting of gas, the bubble of generation is more, increase oxygen transfer rate.2. due to compressed air and increasing The recirculated water of pressure stirs more violent, dead angle to the water body in horizontal direction so that the mixed liquor ejected has bigger kinetic energy Small, advantage is more obvious in the aeration tank of large radius.3. turbulent flow generator tube and air water release spout inner wall are provided with threaded line, So that the mixed liquor that high speed passes through forms the kinetic energy of a rotation, while frictional force makes mixed liquor speed reduce about 30%, has Sufficiently and extend bubble residence time in water conducive to stirring.Mixed liquor is after leaving air water release spout, because of inertia, whirlpool Formula stirs water body, increases stirring region, reduces the dead angle of conventional fluidic aerator, and increase turbulent flow, oxygen transfer rate is bright It is aobvious to increase.

Claims (9)

1. a kind of efficient jet aerator, aerator is equipped with recirculated water interface, and it is left that recirculated water interface is located at compressed air mixing chamber Side and it is connected with the recirculated water spout in compressed air mixing chamber, it is characterized in that: being equipped with low pressure on the right side of compressed air mixing chamber Air mixing chamber, low-pressure air mixing chamber is interior to be equipped with two-stage injection mouth;Dissolved oxygen mixing chamber is equipped on the right side of low-pressure air mixing chamber, it is low The space separating board of air mixing chamber and dissolved oxygen mixing chamber is pressed to be equipped with flowing hole;Turbulent flow generator tube is equipped in dissolved oxygen mixing chamber, it is rapid Flow the affixed air water release spout in generator tube outer end;The compressed air mixing chamber passes through the external contracting air of compressed air channel;Institute It states low-pressure air mixing chamber and passes through the external air blower aeration in low-pressure air channel.
2. efficient jet aerator as described in claim 1, it is characterized in that: low-pressure air mixing cavity outer wall was equipped with port, This crosses port setting in two-stage injection mouth rear ramp, and low-pressure air channel is crossed port into low-pressure air mixing chamber by this and led to Gas.
3. efficient jet aerator as described in claim 1, it is characterized in that: the diameter of recirculated water spout, which determines, refers to pump capacity And lift, the diameter calculation formula of recirculated water spout are as follows:
In formula, Qs is pump capacity, m3/h;H is pump head, mH2O (meter water column);D is water nozzle diameter, m.
4. efficient jet aerator as described in claim 1, it is characterized in that: turbulent flow generator tube and air water release spout inner wall set spiral shell Line structure.
5. efficient jet aerator as claimed in claim 4, it is characterized in that: internal screw thread is circular helix, lead is about managed The half of line length.
6. the efficient jet aerator as described in claim 1 or 5, it is characterized in that: the angle of flare angle design of air water release spout For less than or equal to 20 °.
7. efficient jet aerator as claimed in claim 6, it is characterized in that: example air water release spout angle provided by the invention It is 4~8 °.
8. efficient jet aerator as claimed in claim 7, it is characterized in that: compressed air pressure is 4bar~6bar.
9. efficient jet aerator as claimed in claim 8, it is characterized in that: this aerator is additionally provided with shelving, with shelve including Light steel bracket, light steel bracket middle part are equipped with circulating water pipeline;Light steel bracket top air blower is aerated wind conveyance conduit;Air blower exposes High-pressure air tube is set on the downside of gas wind conveyance conduit mounting bracket;The circulating water pipeline, high-pressure air tube, air blower aeration wind are defeated The recirculated water interface that send pipeline to be separately connected aerator, compressed air passes through and low-pressure air passes through.
CN201822058641.9U 2018-12-08 2018-12-08 Efficient jet aerator Active CN209178095U (en)

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CN201822058641.9U CN209178095U (en) 2018-12-08 2018-12-08 Efficient jet aerator

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Application Number Priority Date Filing Date Title
CN201822058641.9U CN209178095U (en) 2018-12-08 2018-12-08 Efficient jet aerator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368824A (en) * 2018-12-08 2019-02-22 中国二十二冶集团有限公司 Efficient jet aerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368824A (en) * 2018-12-08 2019-02-22 中国二十二冶集团有限公司 Efficient jet aerator

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