CN208762251U - A kind of underwater microbubble aerator of differential dual-impeller - Google Patents
A kind of underwater microbubble aerator of differential dual-impeller Download PDFInfo
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- CN208762251U CN208762251U CN201820980393.0U CN201820980393U CN208762251U CN 208762251 U CN208762251 U CN 208762251U CN 201820980393 U CN201820980393 U CN 201820980393U CN 208762251 U CN208762251 U CN 208762251U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to a kind of field for the treatment of of water pollution, specifically provide a kind of underwater microbubble aerator of differential dual-impeller.The device includes the motor being mounted on platform, and water-bed pedestal, and power resources of the transmission shaft as aeration impeller are equipped between motor and the bearing of pedestal；The quick runner being connected directly with transmission shaft, and the slow runner being connected by retarder with transmission shaft are equipped in transmission shaft bottom；It is equipped with spoiler in the lower part of described two impellers, top is equipped with guide shell, and impeller rotation sputters water and gas to horizontal direction, vacuum is caused, to suck gas and water out of guide shell；The top of guide shell is equipped with the ring pontoon for adjusting aqueous vapor ratio.The technical problem that bubble is big, gas-liquid contact time is short, dissolved oxygen efficiency is poor present in existing impeller aeration process, the utility model propose simple and reliable solution for these problems.
Description
Technical field
The utility model belongs to field for the treatment of of water pollution, and in particular to a kind of underwater microbubble aeration dress of differential dual-impeller
It sets.
Background technique
Impeller aerator refers in order to supply oxygen and stir in water treatment technology, impeller is arranged in the water surface, using leaf
A kind of surface aeration equipment that wheel Stirring drives air and water to be mixed.Common impeller aeration is exposed with vertical axis machinery
Device of air meaning is identical, including pump-type impeller aerator, K-type impeller aerator, inversed umbrella type impeller aerator and plate impeller
The modes such as aerator.When impeller is aerated, the revolving speed of impeller is generally very fast, and violent agitation makes the oxygen in air rapidly to water
Middle transfer, impeller stirs while the water flow of aerated space is spread around, therefore impeller is aerated general single device service
Area is larger.
Mechanical force high-speed shearing device rotates the shear action generated for liquid usually using high-speed rotating impeller, by impeller
Biggish bubble is divided into micro-nano bubble in body.The states such as the U.S., Japan have been developed that corresponding product, wherein representative be
The air entraining device of U.S. HydroCal environmental protection company utility model, the device form one using bottom impeller high speed rotation in water
A vacuum area, the air on liquid level are inhaled into water by aerator, and air is ground into bubble by the blade of aerator, and
To the water surface, which is also the basic principle of cavitation aerator for spiral escalation.The microbubble quantity that the device generates
It is more, but due to bubble largely accumulate in around impeller cause bubble quickly can gassing merge, cause bubble size from
Divergence is larger and impeller high speed rotating unit energy consumption is higher.
Impeller aeration the problems such as not blocking under normal circumstances, but bubble diameter is larger, and it is easily poly- and at air pocket.
In addition to cavitation aeration, the impeller for aeration is usually located at pond table, is formed by bubble and is located at pool surface and is relatively large in diameter, institute
Water surface rupture is quickly risen to bubble, the air-water contact time is very short, and only have seldom oxygen that can be transferred in water in bubble,
Therefore low efficiency.In addition, common impeller aeration is difficult to form small microbubble.These factors cause impeller aeration efficiency relatively low, move
Force efficiency is also relatively low.It is main using pressurization release and micro-pore aeration, these sides both at home and abroad at present in terms of microbubble generation technique
The amount that method release generates microbubble is very little, and micro-pore aeration is easy to block.Chinese utility model patent ZL before this
201110092558.3 disclosing a kind of differential dual-impeller automatic aerator, which is exposed by blade impeller and helical runner
Gas, the mode of differential is that the revolving speed of the rotating ratio helical runner of blade impellers is big, to realize the contact surface of water and air
Product increases, but two groups of impellers of the utility model only have helical runner to be partially submerged in water, blade impeller completely the water surface with
On, only spiral, which is gone to, stirs water flower blade impeller and can contact with water and the construction of the utility model is not completely
A kind of mode.
Process above has that bubble present in existing impeller aeration process is big, gas-liquid contact time is short, dissolved oxygen efficiency
The technical problem of difference.Aerator is seized of critically important status in water treatment technology, has the energy conservation of water process to Guan Chong
The meaning wanted develops new high efficient aeration equipment with very important application value.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides that a kind of aeration quantity is big, fast and stable generates
A large amount of microbubbles, dynamic efficiency are higher, the equipment that can be aerated at certain depth of water.
The utility model achieves the above object through the following technical schemes:
A kind of underwater microbubble aerator of differential dual-impeller, is mounted on a horizontal platform, including vertically-mounted
Motor on platform further includes the transmission shaft connected with motor shaft, the pedestal for being mounted on water-bed portion, the pedestal and motor position
Vertical corresponding, the center of pedestal is equipped with a pedestal bearing, and the transmission shaft is connected to pedestal by pedestal bearing；
Described device further includes the quick runner for being mounted on transmission shaft bottom, retarder, and the quick runner surface is equipped with
Multiple minute protrusions；Further include the slow runner for being mounted on retarder output end, further includes being set to quick runner and low speed leaf
Spoiler below is taken turns, the spoiler is a rigid circular plate, is fixed on transmission shaft；
Described device further includes guide shell, and the guide shell is by tubaeform guide shell and cylindrical guide shell lap splice group
At the outer diameter of cylindrical guide shell is 5~10mm bigger than tubaeform guide shell internal diameter, cylindrical guide shell and tubaeform guide shell weight
The length of folded part is greater than the amplitude of variation of water level；The cylinder guide shell is located at the lower section of tubaeform guide shell, bottom
It is connected with a fixed bracket, the support bracket fastened center is equipped with a bracket bearing, is connected by bracket bearing with transmission shaft；
The top of the tubaeform guide shell is equipped with a ring pontoon, the ring pontoon and tubaeform guide shell phase
Even, the space that water passes through, blow-by are retained between.
Further improvement lies in that the ring pontoon is surrounded by wave resistance baffle, the wave resistance baffle is fixed on platform
On, bottom is lower than horizontal plane, and top is equipped with venthole.
Further improvement lies in that the retarder is planetary gear or the retarder of variable ratio one by one, it is motionless
End is connected on pedestal, and low speed end connects slow runner, and speed end connects transmission shaft.
Further improvement lies in that the motor speed is greater than 3000rpm.
Further improvement lies in that the tubaeform guide shell and cylindrical guide shell inner wall are equipped with spiral helicine water conservancy diversion
Slot, the direction of fluting be obliquely, it is consistent with the rotation direction of quick runner.
Further improvement lies in that the slow runner and quick runner are in sustained height.
The utility model mainly solves that bubble present in existing impeller aeration process is big, gas-liquid contact time is short, molten
The technical problem of oxygen efficiency difference provides a kind of big aeration quantity, a large amount of microbubbles of fast and stable generation, oxygen transmission efficiency height, oxygen benefit
Higher with rate height, dynamic efficiency, the equipment that can be aerated at certain depth of water is improving compared with traditional table exposes impeller
The transmission efficiency of oxygen and the utilization rate of oxygen can be increased substantially while microbubble.
Using the bilobed wheel of differential, i.e. the quick runner of diameter very little and the slow runner being relatively large in diameter is used cooperatively, high
The function of fast impeller is aeration, and the function of slow runner is dispersion；Impeller is arranged according to cavitation mode, is formed using impeller negative
It presses the gentle sucking of water；Using water conservancy diversion measure, by guide shell and diversion trench by the gas of the water surface and water according to certain fluidised form and
It controls certain proportion water conservancy diversion and arrives impeller location, water flow presentation turbulent state when water conservancy diversion is to impeller；The setting of quick runner surface is a large amount of
Small protrusion increases air water shear effect.
Quick runner takes the diameter (only 0.10~0.16m or so is determined according to actual tests) of very little, while use is very high
Revolving speed, and very more small protrusions is set on the blade of impeller.In this way, impeller can obtain more preferably when rotating at high speed
Air water shear effect, the shear action of strength results in air water emulsifying effectiveness, and bubble degree of scatter is very high, bubble diameter
Small, bubble distribution diameter is mostly between 0.5~50 μm.And since impeller has small protrusion, air water shear action is strengthened.
Since bubble diameter is small, the residence time is long in water for bubble, and coefficient of oxygen utilization can significantly improve.According to existing result of study, when
For bubble diameter at 50 μm or less, coefficient of oxygen utilization can achieve 85% or more, and the bubble that traditional impeller surface aeration generates
Diameter is mostly very low in 1mm or more even number mm, coefficient of oxygen utilization.Impeller arrangement form used by this method, the bubble generated
Diameter has quite a few can be less than 50 μm, and the rate of climb is very slow, considers further that aeration is located at certain depth of water, small
Bubble can be trapped in water for a long time, and almost until the oxygen in bubble is utilized totally, therefore coefficient of oxygen utilization increases substantially.
Quick runner and slow runner are arranged between cylindrical guide shell and spoiler, and control cylindrical guide shell
Vertical range between lower edge and spoiler is smaller, i.e., the gap between impeller and guiding device is smaller.It is arranged below impeller
Spoiler can form powerful negative pressure when impeller rotates, and aspirate the water of upper impeller, lead to water in guide shell quilt rapidly
It siphons away.Tubaeform guide shell controls the depth flooded in water by setting ring pontoon, that is, requires the upper of tubaeform guide shell
It is fixed value that edge, which is located at water surface depth below, what the water suction of such impeller came mainly from guide shell from water surface water conservancy diversion
Water.Due to forming whirlpool in tubaeform guide shell, mixing wastewater with air reaches down to impeller, even if therefore impeller is located at certain water level
Depths can obtain stable gas supply and aeration effect, significantly reduce equipment and make without special ventilation equipment
Valence, and this simple small-sized aerator that but can largely supply makes it easily apply the surface water aeration in lake and reservoir
Occasion.This point and common impeller aeration have very big difference.
Slow runner is set around quick runner.If it is required that quick runner also mixes air water while shearing air water
Conjunction object, which pushes away, is scattered to surrounding, then the impeller diameter needed is bigger than normal, and energy consumption height is very uneconomical.The quick runner that the utility model uses is straight
Diameter is small, greatly reduces energy consumption, but undesirable to mixing wastewater with air liquid dispersion effect, if a large amount of mixing wastewater with air liquid are trapped in high speed
Impeller nearby can significantly affect the efficiency of aeration, therefore the mixing wastewater with air liquid for needing to form quick runner using slow runner is as early as possible
It is distributed to the range of certain distance around.Slow runner is relatively large in diameter, and blade area is also larger, the rotation speed of slow runner
It is adjusted by retarder.Using the side of the differential collocation operation of the slow runner of the quick runner and major diameter of minor diameter
Formula both ensure that efficient microbubble generated, and it is huge scarce to also avoid similar U.S. HydroCal environmental protection company product energy consumption
Point.
In order to avoid impact force that the water flow of tubaeform guide shell generates impeller is excessive, set in tubaeform guide shell
Diversion trench is set, diversion trench is downward according to streamlined arrangement eddy flow.Water flow forms vortex in downward flow process, and water flow is along cutting
Line direction flows into quick runner, reduces the direct impact to quick runner, reduces energy consumption.
The explanation of specific structure: cylindrical guide shell is connected to the transmission shaft of motor by guide shell bearing and fixed bracket
On, it is relatively-stationary with elevation.Tubaeform guide shell is by ring pontoon and the fixed upper marginal position of wave resistance baffle, by embedding
Enter cylindrical guide shell and fix the position of lower edge, tubaeform guide shell can be with water level height automatic controlled height, loudspeaker
The gravity of shape guide shell and the resistance of water flow are consistent with ring pontoon buoyancy, therefore tubaeform guide shell floods underwater depth is
Fixed value.It is when the depth of immersion of tubaeform guide shell in water is big, then big and narrow-minded into the water of quick runner, it is on the contrary then
Water is small and large-minded, and the depth of immersion of tubaeform guide shell in water should be determined by test.In order to avoid wave is to loudspeaker
Shape guide shell drains the influence of the uniformity of water and also to fix the position of guide shell, in the outer rim of tubaeform guide shell
Side is provided with ring pontoon and wave resistance baffle.The upper limb of ring pontoon and wave resistance baffle is located on the water surface；Ring pontoon and anti-
The lower edge of unrestrained baffle is located under the water surface.Cylindrical guide shell is fixed with transmission shaft relative position, not with water level height rise or
Decline, the outer diameter of cylindrical guide shell is 5~10mm bigger than tubaeform guide shell internal diameter, cylindrical guide shell and tubaeform guide shell
The length L of lap should be greater than the amplitude of variation of water level.
The diameter D of quick runner2Selection: first simplify processing, the rotation of quick runner is accounted for according to centrifugal pump,
In order to reach enough air water emulsifying effectivenesses and provide enough pressure, impeller diameter should be smaller and revolving speed should be higher.For
There is enough hydraulic pressure at maintenance nozzle, according to the basic principle of centrifugal pump, impeller needs lift H to be offeredTAre as follows:Wherein
Emulsifying effectiveness is formed in order to reach ideal cutting air water, in the lesser situation of impeller diameter, with reference to industrial cream
The parameter of change machine, motor speed n should be greater than 3000rpm.It is calculated according to centrifugal pump, in centrifugal pump α2(one when angle is about 10 °
As 6~15 °), C2uIt is approximately 0.95u2.The pressure that need to provide at impeller is that is, centrifugal pump lift, when submersion depth is 10
~30m, then D2For 0.07~0.115m.But impeller agitation is mixing wastewater with air liquid, provided lift cannot be pressed completely
It is calculated according to water, it is contemplated that the small factor of mixing wastewater with air liquid density ratio water.Secondly, the impeller surface of the utility model be not by
According to the seal form of centrifugal pump, but open wide impeller.Third, the surface of impeller is simultaneously rough, but has many protrusions.4th,
The vortex for entering flowing water formation can reduce requirement to impeller power.5th, the diameter of impeller is less than tubaeform guide shell lower end
The diameter of opening.For above-mentioned factor in addition to the 4th point, other are several all to lead to H actually requiredTGreater than the depth of water where impeller
Depth of water h.By estimation, when gas-water ratio is 1, lift H actually requiredTIt can be met the requirements according to 1.5 times of designs of h, work as exposure
Then D when air water depth is 10~30m2For 0.08~0.14m, it is contemplated that there are certain leeway, D2It can take 0.10~
0.16m。
Water inlet is similar to practical weir at the top of the depth of immersion H: guide shell of tubaeform guide shell in water, therefore according to practical weir
Consider, then flowIn formula: m is discharge coefficient, the practical section weir m value 0.45 of no vacuum；B is weir
Width, in the present invention, the width on weir are exactly the perimeter of horn mouth upper limb, it is assumed that tubaeform guide shell upper diameter is D1's
4 times, i.e. 4D1；H is weir head, i.e., the depth of immersion at the top of tubaeform guide shell in water.D under normal circumstances10.30~
Between 0.48m, work as D1For 0.30m, Q 0.508m3/s；Work as D1For 0.48m, Q 1.302m3/s.Work as D1For 0.30m,Then H=0.166m；Work as D1For 0.48m,
Then H=0.227m.Therefore depth of immersion H value is between 0.166~0.227m, and value is by D1Size determines.
The estimation of dynamic efficiency: being 10m calculating, the diameter D of tubaeform guide shell lower ending opening with submersion depth1According to
0.30m is calculated, which can be D22~3 times, and it is related with equipment machining accuracy, it is excessive to will lead to efficiency reduction, enter
Water and tolerance (volume) ratio of stream are 1:1, then the water flow velocity about 12m/s at tubaeform guide shell lower ending opening, and gas velocity is about
18m/s, discharge area 60% at control section, gas passing area about 40%.Then water flow 508L/s, lift HTAccording to depth of water h's
1.5 times of calculating, slow runner power are equivalent to the 1/4 of quick runner, then the power of motor that impeller needs to match is 146kW (water pump
Efficiency eta1With electric efficiency η2Take representative value, 0.8), oxygen-supplying amount 347kgO2/ h considers the distribution of bubble difference size, comprehensive
Coefficient of oxygen utilization is according to 70% estimation, then theoretical power efficiency reaches 2.38kgO2/kW·h.The value is aerated with conventional impellers or it
His table exposes mode compared to higher, but with the middle micro-pore aeration mode of air blower compared with or obviously relatively low.Various aerators
The specified value of theoretical power efficiency, HJ/T 263-2006 regulation jet-flow aeration answer >=2.0；JB T10670-2014 provides umbrella
Type surface aeration machine answers > 2.0；GBT 35183-2017 provide pump-type impeller surface aeration should >=1.9；HJ/T 252-2006
Micro-hole aerator answers >=4.0~5.0 according to unlike material in regulation.In addition, when submersion depth increase, dynamic efficiency sharply under
Drop, when impeller is located at the 20m depth of water, the theoretical power efficiency of calculating is only 1.36kgO2(coefficient of oxygen utilization is according to 80% by/kWh
Estimation)；The 30m depth of water is 0.96kgO2/ kWh (coefficient of oxygen utilization is according to 85% estimation).Therefore the utility model is not suitable for the depth of water
The aeration of excessive occasion, the depth of water are not suitable for more than 10m.
Finally, all data are finely adjusted again after upper machine, for operation result, it is advisable with being aerated electrical efficiency height.
The advantages that the utility model maintains not the blocking of common impeller aeration, equipment is simple, operation maintenance management facilitates.
The effective aeration structure of the utility model is still impeller, therefore maintains the principal advantages of impeller aeration.
The coefficient of oxygen utilization of the bubble diameter very little that quick runner aeration generates, bubble is high；The shearing force of quick runner is strong, gas
Liquid speed difference is big, and thickness of liquid film is small, and mass transport effect is good.Smaller 100~the 160mm of quick runner diameter of the utility model,
Edge linear velocity can achieve 15.7~25.1m/s, and impeller is very good to the shear-mixed effect of bubble and water flow.
By the way that the drainage of tubaeform guide shell is arranged, can certain deep aeration under water, overcome conventional impellers aeration
The shortcomings that being aerated for the water surface, i.e., arrange according to cavitation type.Bubble diameter is small, and the bubble generated is located at certain depth of water, therefore
The residence time greatly prolongs bubble in water, further increases the effect of mass transfer.
Since aerator equipment is small, structure is simple, light-weight, single device service area is big and aeration quantity is big.Therefore this
The aeration method of utility model can be used as the offering oxygen way that the needs such as lake and reservoir are aerated on a large scale, can also be used as sewage treatment
Aeration method, flexible operation.
By the differential dual-impeller of setting high speed and low speed, a large amount of air-water mixtures that quick runner aeration zone is formed can be with
Around being distributed to quickly, the merging phenomenon of bubble is avoided, therefore improves the service area of aeration dynamic efficiency and single device
Increase, dynamic efficiency is significantly improved compared with traditional impeller aeration, overcomes the quick runner of HydroCal company exploitation
The low disadvantage of aerator dynamic efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the fixation bracket annexation figure of the utility model；
Fig. 3 is the utility model bottom substance schematic diagram
In figure: 1 platform, 2- motor, 3- transmission shaft, the fixed bracket of 4-, 41- bracket bearing, 51- cylinder guide shell, 52-
Tubaeform guide shell, 53- ring pontoon, 61- quick runner, 62- retarder, 63- slow runner, 71- pedestal bearing, the bottom 72-
Seat, 8- spoiler.
Specific embodiment
The application is described in further detail with reference to the accompanying drawing, it is necessary to it is indicated herein to be, implement in detail below
Mode is served only for that the application is further detailed, and should not be understood as the limitation to the application protection scope, the field
Technical staff can make some nonessential modifications and adaptations to the application according to above-mentioned application content.
Embodiment 1
Such as Fig. 1~3, a kind of underwater microbubble aerator of differential dual-impeller is mounted on a horizontal platform 1, packet
Vertically-mounted motor 2 on the platform 1 is included, revolving speed is greater than 3000rpm, further includes the transmission shaft 3 connected with 2 axis of motor, installation
Pedestal 72 in water-bed portion, the pedestal 72 and 2 position of motor are corresponding vertically, and the center of pedestal 72 is equipped with 72 bearing of a pedestal,
The transmission shaft 3 is connected to pedestal 72 by 72 bearing of pedestal；
Described device further includes the quick runner 61 for being mounted on 3 bottom of transmission shaft, retarder 62, the slow runner 63 with
Quick runner 61 is in sustained height；61 surface of quick runner is equipped with multiple minute protrusions；It further include being mounted on retarder
The slow runner 63 of 62 output ends further includes being set to quick runner 61 and the spoiler 8 below of slow runner 63.
Such as Fig. 3, the retarder 62 is the epicyclic gearing of a fixed tooth ratio, is also possible to a variable gear ratio
Retarder, non-moving end are connected on pedestal 72, and low speed end connects slow runner 63, and speed end connects transmission shaft 3；The choked flow
Plate 8 is a rigid circular plate, is fixed on transmission shaft 3, and retarder and aeration water flow have been isolated in this way.
Described device further includes guide shell, and the guide shell is spelled by tubaeform guide shell 52 and the cylindrical overlapping of guide shell 51
Composition is connect, the outer diameter of cylindrical guide shell 51 is 5~10mm bigger than tubaeform 52 internal diameter of guide shell, cylindrical guide shell 51 and loudspeaker
The length of 52 lap of shape guide shell is greater than the amplitude of variation of water level；The tubaeform guide shell 52 and cylindrical guide shell 51
Inner wall is equipped with spiral helicine diversion trench, the direction of fluting be obliquely, it is consistent with the rotation direction of quick runner 61.
The ring pontoon 53 is surrounded by wave resistance baffle, and the wave resistance baffle 54 is fixed on platform 1, and bottom is lower than
Horizontal plane, top are equipped with venthole, and gas can be freely accessible to guide shell, not by flow restriction.
The cylinder guide shell 51 is located at the lower section of tubaeform guide shell 52, and bottom is connected with a fixed bracket 4,
The center of the fixed bracket 4 is equipped with a bracket bearing 41, is connected by bracket bearing 41 with transmission shaft 3；
The top of the tubaeform guide shell 52 is equipped with a ring pontoon 53, the ring pontoon 53 and tubaeform water conservancy diversion
Cylinder 52 is connected, between retain the space that passes through of water, blow-by.
The method of the debugging aerator specifically: the adjustment control at a distance from tubaeform guide shell 52 of ring pontoon 53
System enters the aqueous vapor ratio of guide shell, adjusts the diameter of quick runner 61, adjusts the depth of burying of guide shell, measurement aeration electricity effect
Rate takes optimum value as work suitable parameters.
When impeller starts, there is negative pressure in 63 center of quick runner, and due to the presence of spoiler 8, Chi Zhongshui can not be supplemented in
Come.Water in guide shell (containing tubaeform guide shell 52 and cylindrical guide shell 51) is emptied rapidly, and water flow and air-flow can only be from
The upper limb of tubaeform guide shell 52 flows into.Due to being arranged diversion trench in guide shell, thus water flow spiral and under, the hand of spiral of water flow
It is consistent with the direction of rotation of quick runner.The significant shear effect of quick runner causes air water pulverized, bubble formation very little
Particle, general diameter can achieve tens of μm or less.A large amount of air-water mixtures that quick runner is formed are defeated quickly by slow runner
It sends away, therefore avoids the bubble merging phenomenon that minute bubbles concentrate in together appearance.The revolving speed and motor drive of quick runner
Axis revolving speed is identical, and slow runner is slowed down by retarder, 1/50~1/100 that its revolving speed is quick runner, energy is arranged
It consumes lower.
The flow that air water flows into guide shell is controlled by ring pontoon, and ring pontoon and tubaeform guide shell are entirety,
When weight determines, the depth of immersion of the upper limb of tubaeform floating drum in water is dependent on the buoyancy of ring pontoon offer, therefore can
The flow gentle into the water of impeller is controlled with the size by ring pontoon.Since floating drum size is fixed, therefore the water drained
Then throughput is small greatly for flow, and vice versa.Key control parameter when air water flow-rate ratio is the utility model operation.
The rotation speed of quick runner is also a key parameter, if revolving speed causes central negative pressure insufficient slowly excessively, guide shell bottom
Portion, which just will appear, chokes water phenomenon, and air-flow can not introduce, and aerator will be unable to operate normally.And the excessively slow air water shearing effect of revolving speed
Fruit is poor, cannot get or only seldom bubble is microbubble, efficiency can significantly reduce.If revolving speed is too fast, aerator can be normal
Operation, but energy consumption increases.
Regard quick runner as water pump, then according to water pump principle lift calculated be the utility model method impeller most
The foundation that big depth of immersion calculates.Desired revolving speed, the water that impeller floods are considered according to shear effect of the quick runner to aqueous vapor
It is more than that this range efficiency significantly reduces deeply to be advisable no more than 10m.
A kind of embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to this
The protection scope of utility model.
Claims (6)
1. a kind of underwater microbubble aerator of differential dual-impeller is mounted on a horizontal platform (1), including vertically-mounted
Motor (2) on platform (1), it is characterised in that:
Described device further includes the transmission shaft (3) connected with motor (2) axis, the pedestal (72) for being mounted on water-bed portion, the pedestal
(72) corresponding vertically with motor (2) position, the center of pedestal (72) is equipped with a pedestal (72) bearing, and the transmission shaft (3) passes through
Pedestal (72) bearing is connected to pedestal (72)；
Described device further includes the quick runner (61) for being mounted on transmission shaft (3) bottom, retarder (62), the quick runner
(61) surface is equipped with multiple minute protrusions；Further include the slow runner (63) for being mounted on retarder (62) output end, further includes setting
Quick runner (61) and slow runner (63) spoiler below (8) are placed in, the spoiler (8) is a rigid circular plate, Gu
It is scheduled on transmission shaft (3)；
Described device further includes guide shell, and the guide shell is overlapped and is spelled by tubaeform guide shell (52) and cylindrical guide shell (51)
Composition is connect, the outer diameter of cylindrical guide shell (51) is 5~10mm bigger than tubaeform guide shell (52) internal diameter, cylindrical guide shell (51)
It is greater than the amplitude of variation of water level with the length of tubaeform guide shell (52) lap；The cylinder guide shell (51) is located at loudspeaker
The lower section of shape guide shell (52), bottom are connected with a fixed bracket (4), and the center of the fixed bracket (4) is equipped with one
Bracket bearing (41) is connected by bracket bearing (41) with transmission shaft (3)；
The top of the tubaeform guide shell (52) is equipped with a ring pontoon (53), and the ring pontoon (53) is led with tubaeform
Flow cartridge (52) is connected, between retain the space that passes through of water, blow-by.
2. the underwater microbubble aerator of a kind of differential dual-impeller according to claim 1, it is characterised in that: the annular
Floating drum (53) is surrounded by wave resistance baffle, and the wave resistance baffle (54) is fixed on platform (1), and bottom is lower than horizontal plane, on
Portion is equipped with venthole.
3. the underwater microbubble aerator of a kind of differential dual-impeller according to claim 1, it is characterised in that: the deceleration
Device (62) is the retarder of a planetary gear or variable ratio, and non-moving end is connected on pedestal (72), and the connection of low speed end is low
Fast impeller (63), speed end connect transmission shaft (3).
4. the underwater microbubble aerator of a kind of differential dual-impeller according to claim 1, it is characterised in that: the motor
(2) revolving speed is greater than 3000rpm.
5. the underwater microbubble aerator of a kind of differential dual-impeller according to claim 1, it is characterised in that: the loudspeaker
Shape guide shell (52) and cylindrical guide shell (51) inner wall are equipped with spiral helicine diversion trench, the direction of fluting be obliquely, with
The rotation direction of quick runner (61) is consistent.
6. the underwater microbubble aerator of a kind of differential dual-impeller according to claim 1, it is characterised in that: the low speed
Impeller (63) and quick runner (61) are in sustained height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820980393.0U CN208762251U (en) | 2018-06-25 | 2018-06-25 | A kind of underwater microbubble aerator of differential dual-impeller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503052A (en) * | 2018-06-25 | 2018-09-07 | 安徽建筑大学 | A kind of underwater microbubble aerator of differential dual-impeller and its method |
| CN113086153A (en) * | 2021-04-01 | 2021-07-09 | 北京博汇特环保科技股份有限公司 | Uniform water distributor and ship |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503052A (en) * | 2018-06-25 | 2018-09-07 | 安徽建筑大学 | A kind of underwater microbubble aerator of differential dual-impeller and its method |
| CN108503052B (en) * | 2018-06-25 | 2023-06-06 | 安徽建筑大学 | Differential bilobed wheel underwater micro-bubble aeration device and method thereof |
| CN113086153A (en) * | 2021-04-01 | 2021-07-09 | 北京博汇特环保科技股份有限公司 | Uniform water distributor and ship |
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