CN100406394C - Impeller air-entrainer air-float device - Google Patents
Impeller air-entrainer air-float device Download PDFInfo
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- CN100406394C CN100406394C CNB2004100507671A CN200410050767A CN100406394C CN 100406394 C CN100406394 C CN 100406394C CN B2004100507671 A CNB2004100507671 A CN B2004100507671A CN 200410050767 A CN200410050767 A CN 200410050767A CN 100406394 C CN100406394 C CN 100406394C
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Abstract
The present invention relates to an impeller air-entrainer air-float device comprising a cell body, an aerating machine, a chain-type scum machine, a slag guiding plate and a spiral conveyor. The slag guiding plate of the air-float device is in a flap shape; a front part and a rear part are sloping plates; a middle part is a horizontal straight plate; a closed cover plate is arranged at the top of the cell body. The impeller of the aerating machine comprises a coupled-axle joint, a hollow disc and guide vanes which are arranged on an upper cover plate and or a lower cover plate of the hollow disc; air distribution holes are arranged on the cover plates of the guide vanes and are positioned at the rear sides of the rotation direction of the guide vanes. The air-float device of the present invention can be applied to various water treating processes to remove contaminants such as oil, suspended matters, etc. in water, has the characteristics of high removal efficiency, low energy consumption, no barriers to the impeller, etc., and can prevent harmful gas from volatilizing and spreading in work environment.
Description
Technical field
The present invention relates to a kind of water treatment device, a kind of impeller bleed formula air-floating apparatus of removing oil and suspended substance in the water of more specifically saying so.
Background technology
The principle of work of air-floating apparatus is to utilize pollutents such as oil, suspended substance in the microbubble planar water, and carries pollutent and rise to the water surface and form scum silica frost, realizes the purpose that purifies water.According to the producing method of microbubble in the water, air supporting can divide several technology such as pressurized dissolved air flotation, electrofloatation, jet air float, turbine air flotation, vacuum air supporting.Widespread use at present be air-dissolving air-float and two kinds of technology of turbine air flotation, and other The Application of Technology is less relatively.Air-dissolving air-float is the difference according to the solubleness in water of air under the different pressures, by pressure air-dissolving then the mode that discharges of low pressure produce microbubble, this Technology Need adopts auxiliary facilitys such as pressure air-dissolving tank, air compressor machine, pressure pump, dissolved air release.Turbine air flotation is the negative pressure introducing air that produces when rotating in water by impeller, then air dispersion is formed microbubble in water, compare with air-dissolving air-float, not only facility investment is few, energy consumption is low, simple to operate, and do not need the dissolved air water that refluxes, occupation area of equipment is little, economical and technically have certain advantage.
The turbine air flotation device is general main by formations such as pond body, aerator (or gas-liquid mixed machine), slag scraper, spiral conveyers, and its key is pond body structure and aeration machine impeller structure.
The pond body of turbine air flotation device usually by aeration zone (being air water mixing zone or zone of action), disengaging zone, overflow formations such as pool.For effectively separating water pollutant, to guarantee that not only microbubble and pollutent rise to the water surface and form stable scum layer in the disengaging zone, to guarantee to scrape slag simultaneously during scum silica frost can steadily, successfully discharge the pond body, prevent that scum silica frost from falling into the water again.Early stage turbine air flotation equipment, its pond body structure and mineral flotation machine are similar, as the WEMCO flotation machine, its problem is to interpenetrate in zone of action and bottom, disengaging zone, and the water of Chi Tizhong is in the state of circulating, the scum layer instability, need continuous discharging slag, not only the scum silica frost amount is big, water ratio is high, and scrapes slag equipment the water surface is stirred greatly, influences the water quality of water outlet.Recent turbine air flotation equipment, its pond body and traditional dissolved air floatation pond are similar, and certain improvement arranged structurally, as disclosed air supporting machines such as US5019083, US5242600 and Chinese patent ZL99239458.9, ZL99243522.6, aeration zone and disengaging zone are separate, can form stable scum layer; For preventing bed mud deposition and aeration machine impeller idle running, return line is set in the bottom of aeration zone and disengaging zone; But still there is following common weak point in above-mentioned air supporting machine pond body: (1) slag-guiding plate is single swash plate, the region area that forms when dreg scraper contacts with swash plate is little, scum silica frost easily dreg scraper with backflow from the dreg scraper bottom before swash plate contacts, scrape the slag difficulty, influence effluent quality; (2) body top in pond is uncovered structure, and Working environment is polluted in the obnoxious flavour diffusion of directly volatilizing.
The aerator of turbine air flotation device is made of drive-motor, bearing, protective shaft sleeve tube, coupling shaft, bearing, impeller etc. usually, its bearing is fixed in body top, pond, impeller part then is immersed in the aeration zone certain depth under water, air is introduced impeller by tubular shaft or protective shaft sleeve tube, and the qi-emitting hole on impeller (or air passageways) is scattered in the water with the microbubble form then.The key of aerator is a blade wheel structure, and its impeller is not only answered big, the air water good mixing effect of amount of air entrainment, and should prevent to stop up.Disclosed impellers such as US5091083, US5242600, US3414245 comprise a plurality of hollow blades, qi-emitting hole is arranged on the rear side of blade tip, it utilizes impeller when rotation at the vacuum vortex that the blade rear side produces, and air is introduced impeller and is released in the water through qi-emitting hole; This impeller vacuum tightness is low, amount of air entrainment is little, and does not have the suction outlet capacity, only depends on the stirring action of impeller to disperse bubble, gas-liquid mixed weak effect; Qi-emitting hole on the blade easily stops up, and reason is that water pollutant easily enters the vacuum vortex, and accumulation covers on the venting hole.Disclosed impellers such as US6270061, US4297214, US2246560, US2238139 are made up of upper and lower cover plate and intermediary guide vane, and upper cover plate is provided with water-in, and gas inlet is positioned at the impeller center; It utilizes the negative pressuren zone introducing air that the impeller center produces in the impeller suction water process, and discharges from periphery in the inner back of mixing with water of impeller; Impeller air water good mixing effect, but the air capacity and the suction water yield that impeller is introduced exist the contradiction that can not increase simultaneously, and the air capacity of impeller rotation or introducing can not be excessive, reason is that impeller intake and inlet mouth all are positioned at the impeller central zone, what the impeller center sucked is air-water mixture, along with revolution increases or the increasing of air introducing amount, air-water mixture density sharply descends, and in center generation vortex vapour lock, the vacuum tightness of negative pressuren zone decreases even disappears, and occur fluctuating widely, the air introducing amount and the suction water yield also reduce thereupon and big ups and downs take place, and equipment is in the unsteady running state.Disclosed impeller such as US1526596, US1374445 is made up of upper and lower cover plate and intermediary guide vane, and lower cover is provided with water-in, and disclosed impellers such as its bleed mechanism and US6270061 are similar, and the air capacity of impeller rotation or introducing can not be excessive.Disclosed impellers such as US5358671, US4959183, US4551285, US4668382, US4425232, US2217231 are made up of upper cover plate and lower blade, this open type impeller also is the negative pressuren zone introducing air that utilizes the impeller center to produce, and all there are certain deficiency in air introducing amount and air water mixed effect.US1413723, US1413724, US3917763, US3650513, US3066921, US2996287, US1345596, US1726125, US5160459 etc. are disclosed to be hollow plate-like impeller, its qi-emitting hole (or air passageways) is positioned on the periphery or upper and lower cover plate of hollow disc, the main faint centrifugal force of air generation itself and the shearing action introducing air of impeller surface or periphery and water body of relying on, the bleed ability is little, need under higher revolution, move, and there is not suction liquid ability, the gas-liquid mixed weak effect.Disclosed impellers such as US5318360, US3070229, US4193949, US382702, form by upper and lower cover plate and guide vane etc., its qi-emitting hole (or exhaust-duct) is positioned on the upper cover plate and lower cover in the impeller periphery or the guide vane outside, though impeller has possessed good suction outlet capacity, the bleed ability is still not enough.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of oil removing and remove suspended substance is effective, deslagging is easy, energy consumption is low, impeller does not have obstruction impeller from bleed formula air-floating apparatus.
Impeller of the present invention is from bleed formula air-floating apparatus, comprise pond body, aerator (or gas-liquid mixed machine), slag scraper, slag-guiding plate and spiral conveyer, wherein the pond body generally includes aeration zone (being air water mixing zone or zone of action), disengaging zone and overflows the pool, and the pond body is provided with water-in, water outlet and slag-drip opening.Wherein said slag-guiding plate is a flap shape slag-guiding plate, and this flap shape slag-guiding plate is made up of anterior swash plate, the straight plate in middle part and rear portion swash plate, and wherein the straight plate level in middle part is placed, and anterior swash plate is lower than the straight plate in middle part, and the rear portion swash plate is higher than the straight plate in middle part.
Impeller of the present invention is provided with several return lines of guiding the aeration zone into from bleed formula air-floating apparatus at the bottom of the pond, disengaging zone, also be provided with simultaneously severally to guide the return line of aeration zone into from overflowing the pool.
Impeller of the present invention is in bleed formula air-floating apparatus, and body top, pond can be provided with seal cover board, and is provided with vapor pipe at the cover plate top.
In addition, for ease of the operation of air supporting machine, on the cover board also be provided with bubble viewing window, water outlet porthole.
Impeller of the present invention is in bleed formula air-floating apparatus, described aerator (or gas-liquid mixed machine) generally includes drive-motor, bearing, protective shaft sleeve tube, coupling shaft, bearing and impeller, can adopt of the prior art anyly, also can adopt the aerator that provides among the present invention.
In the aerator provided by the invention, described impeller mainly is made up of connecting shaft joint, hollow disk and guide vane, and its hollow core connecting shaft joint communicates with hollow disk inside; Hollow disk is made up of upper cover plate, lower cover and cylindrical shell; Guide vane can be installed on the lower cover of the upper cover plate at hollow disk top and/or bottom; Qi-emitting hole is arranged on the cover plate at guide vane place, and is positioned at the rear side of guide vane sense of rotation.
Also can be provided with ring diversion plate on the mixing impeller of the present invention, wherein guide vane one end links to each other with the cover plate of hollow disk, and the other end links to each other with ring diversion plate, forms specific water stream channel.Ring diversion plate is the flat board that the center has circular water-in (or fluid inlet), and this dull and stereotyped profile can adopt arbitrary shape as required, but the general circle of selecting.The formed annular region area of the inside and outside circle of flow deflector at least can the cover part guide vane, preferably can cover guide vane fully.Ring diversion plate can prevent that current from from guide vane upper end or the lower end is sliding leaks, improving the suction water yield and the vacuum tightness of impeller, thereby improving amount of air entrainment and gas-liquid mixed effect; Ring diversion plate can also reduce the towing of water body to blade in addition, reduces the power consumption of impeller.
Can be provided with the supercharging blade in the hollow disk described in the present invention.The supercharging blade can be radial vane, also can adopt BI straight blade or involute urve shape bent blades, and quantity can be identical with guide vane quantity, also can be different.This supercharging blade at least with upper cover plate bottom surface, lower cover end face and the cylinder inner wall of hollow disk inside in one of be connected, its turning direction is identical with the turning direction of guide vane.The effect of supercharging blade is as fan blade, and its front produces certain blast in the wheel rotation process, the impellent in the time of can further improving bleed, thereby the amount of air entrainment of raising impeller.
Described guide vane can be radial vane, also can adopt BI straight blade or involute urve shape bent blades.Blade quantity can be provided with 1～12, is preferably 3～8.
Described qi-emitting hole is arranged in the sector region of each guide vane rear side, and preferred parallel is provided with a row or multi-row in guide vane, and a row or two rows preferably are set.
Described hollow disk can be an one-piece construction, also can be welded by upper cover plate, lower cover and cylindrical shell.
On above-mentioned impeller basis, the present invention can also install a stator that links together with aerator in the outside of impeller, further broken impeller institute dispersive microbubble can produce more tiny, uniform microbubble, and prevents that generation in the aeration zone from easily causing the rotary water current of gas-water separation.Stator can adopt conventional eyelet formula stator, but preferably adopts the vane-type stator.The vane-type stator is made up of the annular plate and the intermediary blade of upper cover plate, bottom, and wherein blade can be the straight-plate type blade, also can adopt the involute-type bent blades; Blade can be installed by BI, also can radial or FC installation.Air under impeller and stator dual function, can be scattered in the water with the microbubble form after introducing impeller by tubular shaft more equably.
On the protective shaft sleeve tube of aerator bearing top provided by the invention and bearing bottom, be equipped with inlet mouth, can close the inlet mouth on bearing top during operation, only by the inlet mouth introducing air on the protective shaft sleeve tube, so that recycle air supporting secret is closed the intravital air in pond, also reduced harmful gas emission simultaneously; Also can introduce small amount of fresh air, the intravital air in airtight pond is replaced by the inlet mouth on bearing top.
Impeller bleed formula air-floating apparatus of the present invention has following advantage:
1, adopts flap shape slag-guiding plate, slag-guiding plate is contacted with dreg scraper on the slag scraper form to scrape the slag region area big, dreg scraper is with after anterior swash plate contacts, the scum silica frost that enters on the straight plate in middle part can all be sealed in this zone, and overflows and discharge the pond body along with dreg scraper moves from the rear portion swash plate.Adopt this flap shape slag-guiding plate, not only scrape slag easily, thoroughly, and scum silica frost is difficult for guaranteeing the water quality of water outlet from the anti-stream in dreg scraper bottom.
2, at the bottom of the pond, disengaging zone, be provided with several return lines of guiding the aeration zone among the present invention, also be provided with simultaneously and severally guide the return line of aeration zone into from overflowing the pool, can prevent mud pond body bottom deposit and stop up the disengaging zone and exhalant region between passage.
3, be provided with seal cover board at body top, pond among the present invention, the cover plate top is provided with vapor pipe, draws the obnoxious flavour that discharges in the air supporting process, prevents to pollute Working environment.
4, the negative pressure that the guide vane rear side produced when impeller provided by the invention had made full use of rotation, the negative pressure that the current modified line produces between guide vane, and current are at the shearing action introducing air of disc surfaces generation, the amount of air entrainment of impeller is big, the air water good mixing effect, not only under slow speed, can introduce a large amount of air, and the bleed hole is not in the central zone of impeller, what the impeller center sucked only is water (or liquid), the vacuum tightness size is not limited by other factors, the air introducing amount and the suction water yield can improve and increase simultaneously with revolution, the amount of air entrainment size adjustment is convenient, and the current shearing action can also prevent that qi-emitting hole from stopping up in addition.
Device of the present invention not only can be used widely in industry and municipal water process field, also can use the Separation and Recovery valuable product in fields such as other liquid liquid separation, liquid-solid separation.
Description of drawings
Fig. 1 is the front view of impeller bleed formula air-floating apparatus specific examples of the present invention.
Fig. 2 is the vertical view of impeller bleed formula air-floating apparatus specific examples of the present invention.
Fig. 3 is the right view of impeller bleed formula air-floating apparatus specific examples of the present invention.
Fig. 4 is the structural representation of aerator specific examples provided by the invention.
Fig. 5 is the A-A sectional view of Fig. 4.
Fig. 6 is the structural representation of a kind of impeller provided by the invention.
Fig. 7 is the B-B sectional view of Fig. 6.
Fig. 8 is the C-C sectional view of Fig. 6.
Embodiment
Further specify structure of the present invention and operation scheme below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Figure 3, impeller bleed formula air-floating apparatus comprises pond body 1, aerator 2, chain-type slag scraper 3, slag-guiding plate 12 and spiral conveyer 4.Pond body 1 is separated into aeration zone 5, disengaging zone 6, is overflowed pool 7 by corresponding dividing plate; The pond body is provided with water-in 9, water port 10 and slag-drip opening 11.Be provided with flap shape slag-guiding plate 12 in the pond body 1, its front portion is a swash plate with the rear portion, and the middle part is the straight horizontal plate; Be provided with middle part return line 15 and return line 16 at the bottom of the pond from overflowing pool 7 to aeration zone 5; Body top, pond is provided with seal cover board 17, and the cover plate top is provided with bubble viewing window 18, vapor pipe 19 and water outlet porthole 20.Pending water enters aeration zone 5 by water-in 9, and after the microbubble of introducing with aerator 2 in aeration zone 5 mixes, enters disengaging zone 6; Microbubble absorption is also carried pollutent such as oil and suspended substance in the water, rises to the water surface and form scum silica frost in disengaging zone 6, and the passage at the bottom of the pond of the water after the purification enters and overflows pool 7, is discharged by water port 10 then; Scrape during the slag, along with 13 along continuous straight runs of the dreg scraper on the chain-type slag scraper 3 move forward, the scum layer on top, disengaging zone enters the straight plate section of slag-guiding plate, is scraped into ash pit 8 from the swash plate top at rear portion then, and discharge the pond body by slag-drip opening 11 under the effect of spiral conveyer.
As Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, aerator 2 mainly is made up of drive-motor 21, bearing 22, protective shaft sleeve tube 23, stator 24, tubular shaft 25, impeller 26 and corresponding bearing, is respectively equipped with inlet mouth 27 and 28 on bearing and protective shaft sleeve tube.Aerator stator 24 is made up of upper cover plate 29, lower annular plate 30 and intermediary blade 31.Impeller 26 is made up of connection spindle nose 32, upper cover plate 33, cylindrical shell 34, lower cover 35, guide vane 38; Qi-emitting hole 37 is arranged on the lower cover 35, and is positioned at guide vane 38 rear sides; Upper cover plate 33, cylindrical shell 34 and lower cover 35 constitute the hollow disk of impeller; For improving amount of air entrainment and gas-liquid mixed effect, impeller 26 also further comprises ring diversion plate 36, and flow deflector 36 is connected with guide vane 38, in hollow disk inside supercharging blade 39 can also be installed simultaneously.Aerator relies on bearing 22 to be installed on the pond body cover plate 17, under the drive of drive-motor 21 and tubular shaft 25, impeller 26 rotates with certain speed in aeration zone 5, and in the inner negative pressure that produces of impeller, air is entered by inlet mouth 27 and 28, and be scattered in the water, and under the effect of stator 24 blades 31, further be broken into more tiny, more uniform microbubble by the form of the qi-emitting hole on tubular shaft 25, the impeller 37 with microbubble.
Claims (13)
1. an impeller is from bleed formula air-floating apparatus, comprise pond body, aerator, slag scraper, slag-guiding plate and spiral conveyer, wherein the pond body comprises aeration zone, disengaging zone and overflows the pool, the pond body is provided with water-in, water outlet and slag-drip opening, it is characterized in that described slag-guiding plate is a flap shape slag-guiding plate, this flap shape slag-guiding plate is made up of anterior swash plate, the straight plate in middle part and rear portion swash plate, and wherein the straight plate level in middle part is placed, anterior swash plate is lower than the straight plate in middle part, and the rear portion swash plate is higher than the straight plate in middle part.
2. air-floating apparatus according to claim 1 is characterized in that body top, described pond is provided with seal cover board, and is provided with vapor pipe at the cover plate top.
3. air-floating apparatus according to claim 2 is characterized in that described seal cover board is provided with bubble viewing window and water outlet porthole.
4. air-floating apparatus according to claim 1, described aerator comprises drive-motor, bearing, protective shaft sleeve tube, coupling shaft, bearing and impeller, wherein impeller comprises connecting shaft joint, hollow disk and guide vane, it is characterized in that described guide vane is arranged on the upper cover plate and/or lower cover of hollow disk, qi-emitting hole is arranged on the cover plate at guide vane place, and is positioned at the rear side of guide vane sense of rotation.
5. air-floating apparatus according to claim 4 is characterized in that described qi-emitting hole is arranged in the sector region of guide vane sense of rotation rear side.
6. air-floating apparatus according to claim 5 is characterized in that described qi-emitting hole is parallel to guide vane one row or two rows are set.
7. air-floating apparatus according to claim 4 is characterized in that being provided with the supercharging blade in the described hollow disk.
8. air-floating apparatus according to claim 4 is characterized in that described impeller is provided with ring diversion plate, and ring diversion plate links to each other with guide vane.
9. air-floating apparatus according to claim 8 is characterized in that described ring diversion plate covers guide vane fully.
10. air-floating apparatus according to claim 4 is characterized in that described guide vane is radial vane, BI straight blade or involute urve shape bent blades.
11. air-floating apparatus according to claim 4 is characterized in that a stator that links together with aerator is installed in the outside of described impeller, this stator adopts eyelet formula stator or vane-type stator.
12. air-floating apparatus according to claim 4 is characterized in that being equipped with inlet mouth on the protective shaft sleeve tube of described aerator bearing top and bearing bottom.
13. air-floating apparatus according to claim 1 is characterized in that being provided with several return lines of guiding the aeration zone at the bottom of the pond, described disengaging zone, simultaneously described air-floating apparatus also is provided with and severally guides the return line of aeration zone into from overflowing the pool.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100507671A CN100406394C (en) | 2004-10-29 | 2004-10-29 | Impeller air-entrainer air-float device |
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| CNB2004100507671A CN100406394C (en) | 2004-10-29 | 2004-10-29 | Impeller air-entrainer air-float device |
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| CN1765757A CN1765757A (en) | 2006-05-03 |
| CN100406394C true CN100406394C (en) | 2008-07-30 |
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| CNB2004100507671A Active CN100406394C (en) | 2004-10-29 | 2004-10-29 | Impeller air-entrainer air-float device |
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| CN106809900A (en) * | 2016-12-29 | 2017-06-09 | 广州凯耀资产管理有限公司 | A kind of modified air flotation turbo |
| CN109606598B (en) * | 2018-11-16 | 2021-05-25 | 刘石全 | Propeller and amphibious landing boat using same |
| CN110759510A (en) * | 2019-12-03 | 2020-02-07 | 盛世惠泽科技（天津）有限公司 | Novel petroleum wastewater treatment device |
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