CN103880106B - Squirrel-cage type self-rinsing micro-bubble generator - Google Patents
Squirrel-cage type self-rinsing micro-bubble generator Download PDFInfo
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- CN103880106B CN103880106B CN201410103846.8A CN201410103846A CN103880106B CN 103880106 B CN103880106 B CN 103880106B CN 201410103846 A CN201410103846 A CN 201410103846A CN 103880106 B CN103880106 B CN 103880106B
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Abstract
The invention provides a squirrel-cage type self-rinsing micro-bubble generator applied to air floatation treatment of oily sewage and industrial wastewater. A stock solution forms rotating flow on a rotating blade, and then enters a micro-porous membrane pipe to improve the utilization rate of gas; a ceramic-membrane membrane pipe ensures that generated micro-bubbles are fine and uniform in granularity and large in amount by adopting a squirrel-cage type arrangement and a honeycomb micro-fine pore structure and matching with an air inlet manifold; a control valve, a pressure safety valve and a differential pressure transmitter are arranged on the squirrel-cage type self-rinsing micro-bubble generator to ensure that the device is high in degree of automation; a motor drives a rinsing jacket and a rinsing pipe to continuously rotate to sequentially rinse the micro-porous membrane pipe until regeneration so as to finish the self-rinsing operation; the dirt of the micro-porous membrane pipe can be thoroughly cleaned by using the dual-cleaning of the combination of cleaning liquid rinsing operation and gas purging operation; a micro-bubble tank is designed with three closed chambers, namely a rectification chamber, a gas chamber and a steady-flow chamber; moreover, upper and lower division plates are connected with an annular plate by adopting screws, so that the micro-porous membrane pipe can be disassembled and replaced. The whole set of the device is compact in structure, easy in arrangement, operation and maintenance, and low in running cost.
Description
Technical field
The present invention relates to the microbubble generator of a kind of oily(waste)water and industrial wastewater air flotation process.
Background technology
At present, municipal wastewater and Industrial Wastewater Treatment sector application more have pressurized dissolved air flotation and induction flotation.
Pressurized dissolved air flotation is divided into conventional pressurized dissolved air flotation and heterogeneous air dissolved pump air-flotation system.The bubble that conventional pressurized dissolved air flotation is formed is tiny, but needs the equipment such as configuration gas boosting handling equipment, filler dissolving and outgas device in addition, make system form comparatively complicated, operation energy consumption is higher and occupation area of equipment is larger; Heterogeneous air dissolved pump air-flotation system completes water supercharging in a heterogeneous air dissolved pump, gas sucks and dissolve shear history, produce the particle diameter of microbubble substantially at about 30 μm, gas-liquid mixed degree is high, the configuration of this system is simple, running maintenance is easy, but the Cost Problems of its power consumption and pump self is very important, and heterogeneous air dissolved pump also exists stronger emulsification pretreatment effect to former water, can cause the significantly reduction of purification efficiency.
Induction flotation is divided into mechanical induction air supporting and waterpower induction flotation.Mechanical induction air supporting, i.e. impeller rotary-cut air supporting, its main drawback is that the rotatable parts that mechanical system has are safeguarded complicated, simultaneity factor cannot carry out reflux operation, and there is Liquid level difficulty and occur short Liu Hesiliu district more greatly, comparatively easily in impeller rotary-cut air floatation machine, simultaneously, particle diameter and the impeller rotary-cut intensity of air floatation machine generation microbubble are closely related, and microbubble particle diameter is larger and uneven; Waterpower induction flotation, i.e. jet air float, the power consumption of this technology is low, and do not have rotatable parts in ejector or high speed Venturi tube, shearing force is less simultaneously, the broken loose of adherend can not be caused, but the microbubble particle diameter of generation is comparatively large, and its efficiency is larger by the impact in ejector or high speed Venturi exit aperture, comparatively harsh to the water quality and pressure requirements that enter nozzle, less fluctuation may affect greatly purification efficiency.
In sum, there is many problems in existing pressurized dissolved air flotation and induction flotation in applying at the scene, this innovates on the basis of existing practicable techniques with regard to needing, adopt novel material and complete processing simultaneously, from working efficiency, microbubble granularity, uniformity coefficient and generating capacity, process, install and keep in repair the many-sides such as convenient and running cost and take in, the efficient micro bubble generation device of development of new.
Summary of the invention
In order to overcome defect and the deficiency of the existence of existing air flotation technology, the object of this invention is to provide the squirrel-cage of a kind of applicable oily(waste)water and industrial wastewater air flotation process from rinsing microbubble generator.This microbubble generator, according to designed special construction and technique, possesses compact construction, and gas effciency is high, and microbubble granularity is tiny, even and generating capacity is large, and level of automation is high, is easy to the features such as installation, operation and maintenance and working cost are low.
The technical solution adopted for the present invention to solve the technical problems is that a kind of squirrel-cage of exploitation rinses microbubble generator certainly, primarily of microbubble tank, swirl vane, squirrel-cage microporous membrane pipe assembly, from washing assembly, liquid-inlet pipe, drain pipe, air inlet manifold, rinses manifold and a few part composition of blow-off pipe.In air supporting operation, stoste is flowed through liquid-inlet pipe and enters microbubble tank and formed after rotating fluid by swirl vane and flow into squirrel-cage microporous membrane pipe, gas stream enters microbubble tank and the fine air-flow of logical filmed passing tube micropore cutting formation through air inlet manifold simultaneously, rotating fluid continuous shear stress washes away fine air-flow and produces microbubble, discharges finally by drain pipe.Along with the dirt progressive additive of film pipe micropore, after the air chamber of microbubble tank and rectification room pressure difference are down to minimum permissible value, what microbubble generator proceeded to automatically " dual cleaning " rinses operation certainly, first be the flushing operation of scavenging solution, wash liquid stream enters air chamber through rinsing manifold, logical filmed passing tube micropore forms fine liquid stream and constantly washes away the dirt in micropore, discharges through blow-off pipe containing soiling solution body; Then carry out degree of depth cleaning, i.e. gas purging operation, gas stream enters air chamber through air inlet manifold, and logical filmed passing tube micropore cutting forms fine air-flow and constantly purges dirt residual on micropore, also discharges through blow-off pipe containing dirty air-flow.
Microbubble tank material selection pressure vessel material Q345R, tank chamber entire body inner bushing ring epoxy resins.Microbubble tank adopts the structure of vertical vessel, and top adopts oval dome head, and is connected by the cylindricality tank body of biplate flange and studs and bottom, is sealed between biplate flange by nitrile rubber pad.End socket upper design has cylindrical end tangs, and in the middle of boss, the upper end of inner ring surface is processed with an annular recesses, and groove bottom is processed with the loopful sealing groove of equidistant layered arrangement, and sealing groove matches with this position labyrinth seal, and boss surrounding is evenly arranged six screw holes.Tank base adopts the oval spherical shell with end socket same model, and lower housing portion is designed with cylindrical end tangs, and boss centre is processed with eyelet and surrounding is evenly arranged eight screw holes.
Microbubble tank is from bottom to top divided into rectification room, air chamber and plenum chamber three airtight chamber, and swirl vane is put in rectification indoor, and the stoste entering rectification room through liquid-inlet pipe forms rotating fluid, can improve the utilization ratio of gas when bubble occurs; Air chamber forms by upper lower clapboard is airtight, built-in squirrel-cage microporous membrane pipe assembly, is used as the passage of gas flow, is used as the passage of scavenging solution flowing when rinsing operation when microbubble occurs and purges operation; Plenum chamber is formed by upper spacer and end socket packing, and the rotating fluid carrying microbubble becomes gas-liquid two-phase current stabilization after plenum chamber collects, then is discharged by drain pipe, can reduce the impact that unstable fluid causes pipeline.
180 °, end socket top has been arranged symmetrically with pressure security valve union and drain pipe; pressure safety valve is for the protection of whole producer; when producer internal pressure is too high; pressure safety valve is by mechanical effect relief pressure; pressure security valve union realizes being connected with adopting slotting weldering between end socket, and adopts ring flange to connect with pressure safety valve.Air chamber bottom and rectification room tank skin are provided with upper and lower two pressure difference transmitter joints, pressure difference transmitter automatically detects the pressure difference signal of air chamber and rectification room and changes electric signal into, drive-motor starts, and implements from rinsing operation, and pressure difference transmitter joint realizes being connected with adopting slotting weldering between tank body.The dirt accumulation such as tank base is designed with scum pipe, rectification room tank skin greasy filth need to clean to a certain extent afterwards, and the slag inclusion sewage after cleaning is discharged through scum pipe, adopt to insert to weld to realize being connected between scum pipe with tank body.
Liquid-inlet pipe enters the passage of microbubble tank as stoste, is positioned at tank base, and drain pipe flows out the passage of microbubble tank as gas-liquid two-phase current stabilization, is positioned at end socket top, and liquid-inlet pipe and scum pipe 180 ° are arranged symmetrically with and arrange in " ∫ " shape with drain pipe.Blow-off pipe contains soiling solution body and the passage containing dirty air-flow discharge microbubble tank as from rinsing in operation, be positioned at the central part of tank base, its outlet is positioned at below scum pipe, and entrance is connected by the boss of ring flange and screw and tank base, sealed by nitrile rubber pad between tank body boss and flange.
Air inlet manifold injects the passage of microbubble tank air chamber as gas, is positioned at position on the lower side in the middle part of air chamber, ensures that rotating fluid produces enough bubbles in flowing from bottom to top in microporous membrane pipe; Meanwhile, air inlet manifold is made up of 8 tracheae branches, and each tracheae branch is evenly distributed along the tank skin of microbubble tank, and tracheae outlet axes is respectively just to microporous membrane tubular axis line, ensures that the microbubble that produces is even and generating capacity is large further.Rinse manifold and inject the passage of microbubble tank air chamber as from rinsing scavenging solution in operation, be positioned at position on the upper side in the middle part of air chamber, rinse manifold to be also made up of 8 Ge Yeguan branches, each tracheae branch of the corresponding air inlet manifold of position difference, guarantee scavenging solution washes away scavenging effect during film pipe micropore from top to bottom.Blow-off pipe outlet export in the same way with scum pipe, and with liquid-inlet pipe entrance oppositely, air inlet manifold and washpipe gathering tube entrance are in the same way, and reverse with liquid-inlet pipe entrance.Liquid-inlet pipe, drain pipe, scum pipe, air inlet manifold and rinse manifold and microbubble tank tank skin between all adopts to insert to weld and realizes being connected, liquid-inlet pipe, drain pipe, blow-off pipe, scum pipe, air inlet manifold and rinse manifold and all adopt elbow to realize pipeline with biplate flange to be connected.
Swirl vane surface nickel phosphorus plating, and evenly distributed along rectification room tank skin, and number is 8, and swirl vane tooth trace is the spiral-line launched along rectification room tank skin, and the helix angle value between the evolute of this spiral-line and tank body axis increases with the reduction of stoste viscosity.Each swirl vane comprises nipper and back of the body tooth, and nipper tooth root place disc and rectification room tank skin are tangent, and guarantee stoste can cut the front flank of tooth comparatively glibly; The flank of tooth of nipper adopts recessed arc surface, and the stoste of flowing forms low pressure herein and produces rotating fluid; Nipper tooth top is tangent with back of the body tooth tooth top place disc, and the rotating fluid before ensureing on the flank of tooth tangentially flows out smoothly, keeps the stability of the indoor stoste of whole rectification.The flank of tooth of back of the body tooth adopts the arc surface of epirelief, and back of the body tooth tooth root and rectification room tank skin crossover sites adopt arc transition, avoids swirl vane cross section and rigidity to occur sharply to change, to ensure that the blade in rotating fluid has good mechanical property.
Swirl vane increases along tooth trace gradually at the normal plane face height perpendicular to tooth trace, and the osculatory of stoste on the front flank of tooth is by short elongated for this reason, and contact area is changed from small to big, and reduction stoste stream is to the impact of blade and guarantee forms stable rotating fluid.All evenly distributed swirl vane topmost end faces and squirrel-cage microporous membrane pipe position one_to_one corresponding, after ensureing that the stoste entering rectification room by liquid-inlet pipe forms rotating fluid on every sheet rotating paddle, the microporous membrane pipe of respective correspondence position can be flowed into continuously and stably, the velocity of shear of stoste can be accelerated thus, improve gas effciency.
Squirrel-cage microporous membrane pipe assembly mainly comprises microporous membrane pipe, upper lower clapboard and ring flat-plate.Microporous membrane pipe adopts long-tube component, its material selection ceramic membrane film pipe, with a large amount of " honeycomb fashion " fine pore on tube wall, and has some strength and erosion resistance, ensures that the microbubble granularity that microporous membrane pipe produces is tiny, even and generating capacity is large.Microporous membrane pipe two ends respectively with the eyelet UNICOM of upper lower clapboard, and ensure stopping property with eyelet wall by shrink-fit.Microporous membrane pipe is evenly distributed along air chamber, and number equals swirl vane number.
The material of upper lower clapboard and upper lower ring plate all selects two-way stainless steel, upper spacer adopts cylindricality plectane that microbubble tank top is divided into plenum chamber and air chamber Liang Ge airtight chamber, in the middle of upper spacer, inner ring surface is processed with the loopful sealing groove of equidistant layered arrangement, sealing groove matches with the labyrinth seal of this position, surrounding is evenly arranged eight circular eyelets, and edge is processed with evenly distributed screw hole.Upper ring plate adopts ringlike round plate, realize being connected by the mode of circumferential weld with the tank wall of microbubble tank, in the middle of upper ring plate, the upper end of inner ring surface is processed with the annular recesses of a square-section, realize fixing with upper spacer outer ring surface running fit, below groove, be processed with the tapped through hole be evenly arranged with upper spacer screw hole equal amts.Lower clapboard is used for microbubble tank bottom to be divided into air chamber and rectification Shi Liangge airtight chamber, its structure and size identical with upper spacer, just its outer ring surface adopts upper coarse and lower fine back taper.Structure and the size of lower ring plate are identical with upper ring plate, and just the cross section of annular recesses is isosceles trapezoid, and groove anchor ring coordinates with the back taper outer ring surface of lower clapboard and realizes locating, the levelness of lower clapboard and the verticality of microporous membrane pipe in guarantee.Upper spacer is undertaken connecting and being sealed by nitrile rubber pad with upper ring plate and between lower clapboard with lower ring plate by screw, and in microbubble tank, the material of all screws all selects stainless steel.
Motor, shaft coupling, electric machine support, packing seal, end socket labyrinth seal, transmission shaft, upper spacer labyrinth seal, axle sleeve, lower clapboard labyrinth seal, irrigating sleeve and washpipe is comprised from washing assembly.Servosystem selected by motor, and shaft coupling adopts flange-face coupling, realizes connecting between motor shaft with transmission shaft by bolt, and motor drives irrigating sleeve and washpipe to rotate by transmission shaft and axle sleeve after step-down gear slows down.Electric machine support upper end adopts ringlike round plate, plectane surrounding is evenly arranged four eyelets, is connected with motor by bolt, and three rack legs all adopt same model angle steel, its upper end and plectane carry out welding and lower end is welded with end socket, thus realize fixing between motor and microbubble tank.
Transmission shaft is used for transmitting power, adopts the ladder rotary structure of variable cross-section, comprises spindle nose, axle body, axle journal and lower spindle nose.Upper spindle nose is positioned at the top of transmission shaft, and its top is processed with keyway, and connect with shaft coupling after installing flat key, bottom outer ring surface carries out precision work, coordinates with packing seal and end socket labyrinth seal.Axle body is used for connecting spindle nose and axle journal, and axle journal outer ring surface carries out precision work, coordinates with upper spacer labyrinth seal.Lower spindle nose adopts spline structure to connect with axle sleeve.Axle sleeve is used for joint transmission axle and washpipe, and its upper and lower two ends are all processed with four spline keyways be evenly arranged.
Adopt the double seal of packing seal and end socket labyrinth seal between transmission shaft and end socket, oil immersion asbestos packing selected by gland sealed filler, adopts three along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle between end socket labyrinth seal and transmission shaft.Transmission shaft and upper spacer and adopt the labyrinth seal of same model to seal between coupling shaft and lower clapboard, adopt three equally between labyrinth seal with transmission shaft along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle.
Irrigating sleeve is used for realizing from the UNICOM between washing assembly and squirrel-cage microporous membrane pipe assembly, during air supporting operation, irrigating sleeve departs from microporous membrane pipe and is positioned at lower nozzle on lower clapboard, and the position be between two microporous membrane pipes, namely from washing assembly not with microporous membrane pipe UNICOM, and when certainly rinsing operation, irrigating sleeve just to the lower nozzle of microporous membrane pipe, namely from washing assembly and microporous membrane pipe UNICOM.Often overlap, from washing assembly, two irrigating sleeves are housed, and be arranged symmetrically with along drive shaft axis, each irrigating sleeve comprises closed tube, spring and spring case.Closed tube adopts step shaft structure, material selection 35CrMo, bonderizing is carried out in modifier treatment rear surface, intermediate throughholes diameter equals the diameter of bore of microporous membrane pipe, it is from top to bottom followed successively by shoulder, axle journal and locating shaft, milled processed is carried out in shoulder upper surface, with the lower surface precision-fit of lower clapboard; Axle journal is used for connecting shoulder and locating shaft, and axle journal and shoulder lower surface are connected to form the shaft shoulder, and its outer spring is run through in location; Locating shaft outer ring surface carries out precision work, with the inner hole refined sucking fit of spring case, forms moving sets, in conjunction with the compressive action of spring, realizes the sealing between irrigating sleeve and lower clapboard.Spring case adopts tube cap structure, ring body is processed with loopful groove, is used for placing spring; Lower end is processed with eyelet, is connected with the elbow of washpipe by slotting weldering.
Washpipe is from rinsing irrigating sleeve powered rotation in operation and as containing soiling solution body with contain the passage that dirty air-flow flow to blowdown pipeline, it mainly comprises elbow, threeway, coupling shaft, bearing shell, sleeve and thrust roller bearing, coupling shaft is used for the transmission of power of drive-motor to the end fitting from washing assembly, adopt the ladder rotary structure of variable cross-section, comprise spindle nose and axle journal, spindle nose adopts spline structure to connect with axle sleeve, and axle journal outer ring surface carries out precision work, coordinate with lower clapboard labyrinth seal.Threeway is as the body of washpipe, and middle supervisor upper end is connected by circumferential weld with the axle journal of coupling shaft, and siphunculus upper end, both sides is connected by circumferential weld with elbow respectively, and the angle between the siphunculus axis of both sides is designed to 90 °.Threeway supervisor bottom adopts step shaft structure, is from top to bottom followed successively by shoulder, axle body and spindle nose, and axle body is used for connecting shoulder and spindle nose, and precision work need be carried out in axle body surface, with the inner ring surface running fit of bearing shell; Axle body and shoulder lower surface are connected to form the shaft shoulder, locate the bearing shell that runs through outside axle body, and spindle nose and axle body lower surface are connected to form the shaft shoulder, locate on the thrust roller bearing that runs through outside spindle nose and enclose; Spindle nose outer ring surface carries out precision work, encloses shrink-fit with on thrust roller bearing.
Bearing shell adopts dissection type structure, material selection mmaterial, bearing shell inner ring surface is drilled with the blind hole of certain density and pore size, the blind hole eyelet of every aspect is uniformly distributed, basal spacing is equal, and the eyelet between each aspect is staggered, and in operation, each blind hole eye is full of fluid, make to remain certain oil film between the contact surface of bearing shell and threeway axle body, to ensure the lubricant effect between the two.Bearing shell two halves cut open body seam crossing and are designed with oil duct, ensure that bearing shell is fully reliable for oil supply further.
Sleeve outer ring surface diameter equals the internal diameter of eyelet in the middle of microbubble tank bottom boss, and realizes fixing between washpipe and tank body by circumferential weld.In the middle of sleeve, duct adopts variable cross-section ladder rotary structure, and duct upper diameter equals bearing shell outer ring surface diameter, and is greater than the external diameter that thrust roller bearing encloses; The external diameter that duct mid diameter encloses under equaling thrust roller bearing, precision work is carried out on surface, and with thrust roller bearing under enclose precision-fit; Be connected to form the shaft shoulder with lower end surface in the middle part of duct, enclose under the thrust roller bearing of location, realize the fixing of thrust roller bearing thus.
The technique effect that the present invention can reach is, stoste enters microporous membrane pipe form rotating fluid on rotating paddle after again, can accelerate the velocity of shear of stoste, improves the utilization ratio of gas when bubble occurs; Ceramic membrane film pipe adopts squirrel-cage to arrange and honeycomb fashion fine pore structure, and coordinate the air inlet manifold with 8 corresponding tracheae branches, microbubble generator can be avoided the Strong shear effect of stoste stream, ensure that the microbubble granularity that complete assembly produces is tiny, even and generating capacity is large; Control valve on air inlet manifold adjusts air input automatically to control aeration rate, the pressure safety valve on end socket top discharges too high pressure automatically by mechanical effect, pressure difference transmitter simultaneously on air chamber and rectification room automatically detects pressure difference signal and changes electric signal into, drive-motor starts to be implemented, from rinsing operation, to make the level of automation of complete assembly high; Motor drives irrigating sleeve and washpipe to rotate by transmission shaft after step-down gear slows down, and rinses microporous membrane pipe successively until regeneration, completes from rinsing operation; Scavenging solution is through rinsing the flushing operation of dirt in manifold 8 liquid pipe branch flush film pipe micropores, and bound gas, through the purging operation of air inlet manifold 8 tracheae branches, i.e. dual cleaning, thoroughly can clean the dirt of film pipe micropore; Microbubble tank adopts upper lower clapboard to be divided into the unique texture of rectification room, air chamber and plenum chamber three airtight chamber, goes up between lower clapboard and ring flat-plate simultaneously and adopts screw attachment, make microporous membrane pipe freely to dismantle and to change; Packing seal and labyrinth seal is adopted to realize sealing from washing assembly; Microbubble generator compact construction, be that the layout of whole air supporting choosing sled saves space, each interface adopts flange to connect, and is easy to install, and configuration automation control system, makes its easy handling, easy to maintenance and working cost is low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is from the typical structure sketch rinsing microbubble generator according to squirrel-cage proposed by the invention.
Fig. 2 is A-A sectional view of Fig. 1.
Fig. 3 is that squirrel-cage is from the structure diagram rinsing microbubble tank in microbubble generator.
Fig. 4 is B-B sectional view of Fig. 3.
Fig. 5 is that squirrel-cage is from the structure diagram rinsing squirrel-cage microporous membrane pipe assembly in microbubble generator.
Fig. 6 is that squirrel-cage is from the structure diagram rinsed from washing assembly in microbubble generator.
Fig. 7 is that squirrel-cage is from the structure diagram rinsed from washing assembly irrigating sleeve and washpipe in microbubble generator.
Fig. 8 is that squirrel-cage is from the air supporting work flow sketch rinsing microbubble generator.
Fig. 9 is that squirrel-cage is from the flushing work flow sketch rinsing microbubble generator.
Figure 10 is that squirrel-cage is from the purging work flow sketch rinsing microbubble generator.
In figure, 1-is from washing assembly, 2-microbubble tank, 3-squirrel-cage microporous membrane pipe assembly, 4-swirl vane, 5-liquid-inlet pipe, 6-blow-off pipe, 7-air inlet manifold, 8-rinses manifold, 9-drain pipe, 10-pressure security valve union, 11-end socket, 12-studs, 13-biplate flange, 14-tank body, 15-scum pipe, 16-pressure difference transmitter joint, 17-upper spacer, 18-upper ring plate, 19-microporous membrane pipe, 20-lower clapboard, 21-lower ring plate, 22-motor, 23-shaft coupling, 24-electric machine support, 25-packing seal, the labyrinth seal of 26-end socket, 27-transmission shaft, the labyrinth seal of 28-upper spacer, 29-axle sleeve, the labyrinth seal of 30-lower clapboard, 31-irrigating sleeve, 32-washpipe, 33-coupling shaft, 34-closed tube, 35-spring, 36-spring case, 37-elbow, 38-threeway, 39-bearing shell, 40-sleeve, 41-thrust bearing.
Embodiment
In fig. 1 and 2, squirrel-cage forms by from washing assembly 1, microbubble tank 2, squirrel-cage microporous membrane pipe assembly 3, swirl vane 4, liquid-inlet pipe 5, blow-off pipe 6, air inlet manifold 7, flushing manifold 8 and drain pipe 9 from rinsing microbubble generator.During assembling, first liquid-inlet pipe 5 and blow-off pipe 6 and pipeline thereof are received on microbubble tank 2 tank body successively, then will to insert from the irrigating sleeve of washing assembly 1 and washpipe in the rectification room of microbubble tank 2 and install lower clapboard, then by microporous membrane pipe, transmission shaft and axle sleeve to be inserted in the air chamber of microbubble tank 2 and are installed upper spacer, each microporous membrane pipe position one_to_one corresponding of swirl vane 4 topmost end face and squirrel-cage microporous membrane pipe assembly 3, finally install microbubble tank 2 end socket respectively, shaft coupling and motor, and drain pipe 9 is received on microbubble tank 2 end socket, each tracheae branch of air inlet manifold 7 receives on microbubble tank 2 tank body in turn with the Ge Yeguan branch and pipeline thereof of rinsing manifold 8.
In fig. 1 and 2, squirrel-cage is in time rinsing microbubble generator debugging, first hydro-test is carried out to whole device, test pressure is 1.25 times of design pressure, and checking has No leakage from the sealing of the shaft seal of washing assembly 1, microbubble tank 2 end socket and tank body, tank flange, adapter and manifold flange, pressure difference transmitter piezometric tube and valve.In operation, observe whether produce microbubble granularity tiny and even, and whether the pressure reduction of air chamber and rectification room normal.When safeguarding, the bimester of per, regular deslagging once, manually opens the valve on the scum pipe of tank base, can discharge the slag inclusion sewage after cleaning; Every two years the parts of a detachable squirrel-cage microporous membrane pipe assembly 3 clean.During dismounting squirrel-cage microporous membrane pipe assembly 3, first pressure safety valve, fluid pipeline, motor, shaft coupling and drive shaft seal etc. are dismantled successively; Then turn on the studs on microbubble tank 2 end socket, open end socket, and turn on the screw between upper spacer and upper ring plate, the sealing between dismounting upper spacer and transmission shaft, opens upper spacer; Finally take out each microporous membrane pipe to clean, the dirts such as obstinate greasy dirt can clean with alkali cleaning or with detergent, and the dirt such as incrustation scale and anvil cinder, available hydrochloric acid cleaning.
In fig. 1 and 2, during air supporting, the flow velocity of stoste and flow can realize by regulating the variable valve on liquid-inlet pipe 5.When air supporting and purging operation, each tracheorrhaphy of air inlet manifold 7 props up gas flow rate in exit gas jet velocity and tracheae and realizes by regulating the variable valve in each tracheae branch.When flushing operation, squirrel-cage microporous membrane pipe assembly 3 can by regulating the working pressure of scavenging solution to realize with the inside and outside differential pressure of microbubble tank 2 air chamber.When flushing operation, rinse scavenging solution flow velocity in manifold 8 each liquid pipe branch outlet scavenging solution jet velocity and liquid pipe and realize by regulating the variable valve in Ge Yeguan branch.
In figs. 3 and 4, microbubble tank 2 is made up of pressure security valve union 10, end socket 11, studs 12, biplate flange 13, tank body 14, scum pipe 15 and pressure difference transmitter joint 16.End socket 11 is connected with tank body 14 by biplate flange 13 and studs 12; Pressure security valve union 10 realizes being connected with end socket 11 by inserting weldering, and adopts ring flange to connect with pressure safety valve; Pressure difference transmitter joint 16 realizes being connected with tank body 14 air chamber and rectification room by inserting weldering respectively, and adopts ring flange to connect with piezometric tube and pressure unit; Liquid-inlet pipe 5, drain pipe 9, scum pipe 15, air inlet manifold 7 all adopt slotting weldering to realize being connected with rinsing between manifold 8 with the tank skin of microbubble tank 2.Swirl vane 4 realizes connecting with tank body 14 rectification room by circumferential weld, and evenly distributed along rectification room tank skin.
In Figure 5, squirrel-cage microporous membrane pipe assembly 3 is made up of upper spacer 17, upper ring plate 18, microporous membrane pipe 19, lower clapboard 20 and lower ring plate 21.Microporous membrane pipe 19 two ends are connected with upper spacer 17 and lower clapboard 20 by shrink-fit; Upper ring plate 18 is connected with the tank body 14 of microbubble tank 2 by circumferential weld with lower ring plate 21, realizes the fixing of squirrel-cage microporous membrane pipe assembly 3; Upper spacer 17 is undertaken connecting and being sealed by nitrile rubber pad with upper ring plate 18 and between lower clapboard 20 with lower ring plate 21 by screw.
In Figure 5, when air supporting and purging operation, squirrel-cage microporous membrane pipe assembly 3 can be realized by the working pressure of adjustments of gas with the inside and outside differential pressure of microbubble tank 2 air chamber.During air supporting, in rotating fluid, entrained microbubble amount can be realized by the height of adjustment microporous membrane pipe 19.During air supporting, after stock solution flow increases, contained by unit volume stoste, microbubble amount can be ensured by the quantity increasing microporous membrane pipe 19.
In figure 6, in washing assembly 1, motor 22 is slowed down by step-down gear, and connects rear drive irrigating sleeve 31 by shaft coupling 23, transmission shaft 27 and axle sleeve 29 and washpipe 32 rotates.Electric machine support 24 is connected with motor 22 by bolt, and is fixed on the end socket 11 of microbubble tank 2 by welding support leg.The double seal of packing seal 25 and end socket labyrinth seal 26 is adopted between transmission shaft 27 and end socket 11, adopt upper spacer labyrinth seal 28 in conjunction with ○-shaped seal ring between transmission shaft 27 with upper spacer 17, washpipe 32 coupling shaft adopts lower clapboard labyrinth seal 30 in conjunction with ○-shaped seal ring between lower clapboard 20 simultaneously, realizes the sealing from washing assembly.
In the figure 7, irrigating sleeve 31 is made up of closed tube 34, spring 35 and spring case 36, the lower surface precision-fit of closed tube 34 shoulder upper surface and lower clapboard 20, moving sets is formed between the endoporus of closed tube 34 locating shaft and spring case 36, in conjunction with the compressive action of spring 35, realize the sealing between irrigating sleeve 31 and lower clapboard 20.Washpipe 32 is made up of coupling shaft 33, elbow 37, threeway 38, bearing shell 39, sleeve 40 and thrust bearing 41, and elbow 37 is by inserting the connection of welding and realizing between irrigating sleeve 31 and washpipe 32, and coupling shaft 33 realizes the connection between axle sleeve 29 and washpipe 32 by spline; Bearing shell 39, between threeway 38 axle body and sleeve 40, avoids washpipe 32 to wear and tear; Thrust bearing 41 is positioned on threeway 38 spindle nose, is used for balancing the whole axially loaded from washing assembly 1.
In fig. 8, during air supporting operation, close from washing assembly 1 and flushing manifold 8, irrigating sleeve 31 is in the position between two microporous membrane pipes 19, stoste flows through liquid-inlet pipe 5 and enters rectification room bottom microbubble tank 2, these indoor are full of the stoste with rectification pressure, stoste forms rotating fluid by swirl vane 4, and the inner chamber of squirrel-cage microporous membrane pipe 19 is flowed into through lower clapboard 20, simultaneously gas stream enters sealed gas chamber in the middle part of microbubble tank 2 through each tracheae branch of air inlet manifold 7, this room is full of the gas with design pressure, gas forms fine air-flow by the micropore cutting on microporous membrane pipe 19, rotating fluid continuous shear stress washes away fine air-flow and produces microbubble, the rotating fluid carrying microbubble enters the plenum chamber on microbubble tank 2 top through upper spacer 17, discharge through drain pipe 9 after gas-liquid two-phase current stabilization collects.When microbubble tank 2 internal pressure is too high, the pressure safety valve on end socket 11 is opened automatically by mechanical effect, discharges tank internal pressure.
In fig .9, when the dirt progressive additive of film pipe micropore, pressure difference between the rectification room of microbubble tank 2 and air chamber reduces gradually, after the difference of the indoor rectification pressure of design pressure in air chamber and rectification is lower than minimum permissible pressure value, pressure difference signal is transformed into electric signal by pressure difference transmitter, drive-motor start implement " dual cleaning " certainly rinse operation.What first carry out is the flushing operation of scavenging solution, liquid-inlet pipe 5, air inlet manifold 7 and drain pipe 9 are closed, rinse manifold 8 to open, wash liquid stream enters the air chamber of microbubble tank 2 through rinsing manifold 8 Ge Yeguan branch, this room is full of the scavenging solution with design pressure, motor 22 through step-down gear slow down after by shaft coupling 23, transmission shaft 27 and axle sleeve 29 drive irrigating sleeve 31 and washpipe 32 to rotate, when the lower nozzle of two symmetrical microporous membrane pipes 19 during irrigating sleeve 31 is just to squirrel-cage microporous membrane pipe assembly 3, scavenging solution leads to filmed passing tube micropore and forms fine liquid stream and constantly wash away the dirt in micropore, the inner chamber entering microporous membrane pipe 19 containing soiling solution body produced, flow in drain pipe 9 by lower clapboard 20, finally discharged by blow-off pipe 6.Irrigating sleeve 31 and washpipe 32 ceaselessly move in a circle along shaft coupling 23 axis under motor 22 drives, successively squirrel-cage microporous membrane pipe 19 is rinsed, each microporous membrane pipe 19 is regenerated, when the difference of the indoor rectification pressure of design pressure in air chamber and rectification reaches zero, guard signal sent by pressure difference transmitter, rinses operation and completes.
In Fig. 10, after flushing operation completes, carry out the second step gas purging operation from rinsing operation, rinse manifold 8 to close, and air inlet manifold 7 is opened, gas stream enters the air chamber of microbubble tank 2 through each tracheae branch of air inlet manifold 7, this room is full of the gas with design pressure, when the lower nozzle of two symmetrical microporous membrane pipes 19 during irrigating sleeve 31 is just to squirrel-cage microporous membrane pipe assembly 3, gas leads to the fine air-flow of filmed passing tube micropore cutting formation and constantly purges dirt residual on micropore, the inner chamber entering microporous membrane pipe 19 containing dirty air-flow produced, flow in drain pipe 9 by lower clapboard 20, finally discharged by blow-off pipe 6.Purged squirrel-cage microporous membrane pipe 19 successively by the circumferential motion of irrigating sleeve 31 and washpipe 32, thoroughly the dirt of cleaning film pipe micropore, purges operation and completes.
Claims (10)
1. a squirrel-cage is from rinsing microbubble generator, in air supporting operation, stoste flows into squirrel-cage microporous membrane pipe after forming rotating fluid by swirl vane, and gas stream enters microbubble tank through air inlet manifold simultaneously, and rotating fluid continuous shear stress washes away fine air-flow and produces microbubble; In flushing operation, first be rinse operation, scavenging solution leads to filmed passing tube micropore and forms fine liquid stream and constantly wash away the dirt in micropore, then purging operation is carried out, gas leads to the fine air-flow of filmed passing tube micropore cutting formation and constantly purges dirt residual on micropore, discharge through blow-off pipe containing soiling solution body with containing dirty air-flow, it is characterized in that:
One microbubble tank; Described microbubble tank tank chamber entire body inner bushing ring epoxy resins, top adopts oval dome head, and is connected by the cylindricality tank body of biplate flange and studs and bottom; Microbubble tank is from bottom to top divided into rectification room, air chamber and plenum chamber three airtight chamber, and swirl vane is put in rectification indoor; Air chamber forms by upper lower clapboard is airtight, built-in squirrel-cage microporous membrane pipe assembly, is used as the passage of gas flow, is used as the passage of scavenging solution flowing when rinsing operation when microbubble occurs and purges operation; Plenum chamber is formed by upper spacer and end socket packing, and the rotating fluid carrying microbubble becomes gas-liquid two-phase current stabilization after plenum chamber collects;
One liquid-inlet pipe and drain pipe; Described liquid-inlet pipe is positioned at tank base, and drain pipe flows out the passage of microbubble tank as gas-liquid two-phase current stabilization, is positioned at end socket top, and liquid-inlet pipe and scum pipe 180 ° are arranged symmetrically with and arrange in " ∫ " shape with drain pipe;
One blow-off pipe; Described blow-off pipe is positioned at the central part of tank base, and its outlet is positioned at below scum pipe;
One air inlet manifold; Described air inlet manifold is positioned at position on the lower side in the middle part of air chamber, and air inlet manifold is made up of 8 tracheae branches, and each tracheae branch is evenly distributed along the tank skin of microbubble tank, and tracheae outlet axes is respectively just to microporous membrane tubular axis line;
One rinses manifold; Described flushing manifold injects the passage of microbubble tank air chamber as from rinsing scavenging solution in operation, is positioned at position on the upper side in the middle part of air chamber, rinses manifold and be also made up of 8 Ge Yeguan branches, each tracheae branch of the corresponding air inlet manifold of position difference;
One swirl vane; Described swirl vane surface nickel phosphorus plating, and evenly distributed along rectification room tank skin, and number is 8, and swirl vane tooth trace is the spiral-line launched along rectification room tank skin; Swirl vane increases along tooth trace gradually at the normal plane face height perpendicular to tooth trace, and the osculatory of stoste on the front flank of tooth is by short elongated for this reason, and contact area is changed from small to big;
One squirrel-cage microporous membrane pipe assembly; Described microporous membrane pipe adopts long-tube component, its material selection ceramic membrane film pipe, with a large amount of " honeycomb fashion " fine pore on tube wall; Microporous membrane pipe two ends respectively with the eyelet UNICOM of upper lower clapboard, and ensure stopping property with eyelet wall by shrink-fit; Microporous membrane pipe is evenly distributed along air chamber, and number equals swirl vane number;
One from washing assembly; Described in washing assembly motor select servosystem, shaft coupling adopts flange-face coupling, and motor drives irrigating sleeve and washpipe to rotate by transmission shaft and axle sleeve after step-down gear slows down; Electric machine support realizes fixing between motor and microbubble tank, and irrigating sleeve realizes from the UNICOM between washing assembly and squirrel-cage microporous membrane pipe assembly, often overlaps, from washing assembly, two irrigating sleeves is housed, and be arranged symmetrically with along drive shaft axis; Washpipe is irrigating sleeve powered rotation and as containing soiling solution body and containing the passage that dirty air-flow flow to blowdown pipeline, bearing shell adopts dissection type structure, material selection mmaterial, and bearing shell inner ring surface is drilled with the blind hole of certain density and pore size; Sleeve outer ring surface diameter equals the internal diameter of eyelet in the middle of tank base boss.
2. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: the end socket top of described microbubble tank has been arranged symmetrically with pressure security valve union and drain pipe, when producer internal pressure is too high, pressure safety valve is by mechanical effect relief pressure;
The air chamber bottom of described microbubble tank and rectification room tank skin are provided with upper and lower two pressure difference transmitter joints, and pressure difference transmitter automatically detects the pressure difference signal of air chamber and rectification room and changes electric signal into, and drive-motor starts, and implements from rinsing operation;
The tank base of described microbubble tank is designed with scum pipe, and the slag inclusion sewage after cleaning is discharged through scum pipe.
3. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: described swirl vane comprises nipper and back of the body tooth, nipper tooth root place disc and rectification room tank skin tangent, the flank of tooth of nipper adopts recessed arc surface, nipper tooth top is tangent with back of the body tooth tooth top place disc, and the flank of tooth of back of the body tooth adopts the arc surface of epirelief.
4. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: all evenly distributed swirl vane topmost end faces and squirrel-cage microporous membrane pipe position one_to_one corresponding in described swirl vane, after ensureing that the stoste entering rectification room by liquid-inlet pipe forms rotating fluid on every sheet rotating paddle, flow into the microporous membrane pipe of respective correspondence position continuously and stably.
5. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: the loopful sealing groove in the middle of described upper spacer, inner ring surface being processed with equidistant layered arrangement, and sealing groove matches with the labyrinth seal of this position; The upper end of inner ring surface is processed with the annular recesses of a square-section in the middle of upper ring plate, with upper spacer outer ring surface running fit and realize fixing;
Described lower clapboard outer ring surface adopts upper coarse and lower fine back taper; The cross section of lower ring plate annular recesses is isosceles trapezoid, and groove anchor ring coordinates with the back taper outer ring surface of lower clapboard and realizes locating, the levelness of lower clapboard and the verticality of microporous membrane pipe in guarantee.
6. squirrel-cage according to claim 1 is from rinsing microbubble generator, and it is characterized in that: the described double seal adopting packing seal and end socket labyrinth seal in washing assembly between transmission shaft and end socket, oil immersion asbestos packing selected by gland sealed filler; Transmission shaft and upper spacer and adopt the labyrinth seal of same model to seal between coupling shaft and lower clapboard, adopt three along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle between labyrinth seal and transmission shaft.
7. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: the upper spindle nose bottom outer ring surface of described transmission shaft carries out precision work, coordinate with packing seal and end socket labyrinth seal, axle journal outer ring surface carries out precision work, coordinate with upper spacer labyrinth seal, lower spindle nose adopts spline structure to connect with axle sleeve;
The upper and lower two ends of described axle sleeve are all processed with four spline keyways be evenly arranged.
8. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: milled processed is carried out in the closed tube shoulder upper surface of described irrigating sleeve, with the lower surface precision-fit of lower clapboard; Axle journal and shoulder lower surface are connected to form the shaft shoulder, and its outer spring is run through in location; Locating shaft outer ring surface carries out precision work, with the inner hole refined sucking fit of spring case, forms moving sets;
The spring case ring body of described irrigating sleeve is processed with loopful groove, is used for placing spring.
9. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: the coupling shaft spindle nose of described washpipe adopts spline structure to connect with axle sleeve, and axle journal outer ring surface carries out precision work, coordinates with lower clapboard labyrinth seal;
Angle between the threeway both sides siphunculus axis of described washpipe is 90 °, and precision work need be carried out, with the inner ring surface running fit of bearing shell in the axle body surface of middle supervisor; Axle body and shoulder lower surface are connected to form the shaft shoulder, locate the bearing shell that runs through outside axle body, and spindle nose and axle body lower surface are connected to form the shaft shoulder, locate on the thrust roller bearing that runs through outside spindle nose and enclose; Spindle nose outer ring surface carries out precision work, encloses shrink-fit with on thrust roller bearing.
10. squirrel-cage according to claim 1 is from rinsing microbubble generator, it is characterized in that: in the middle of described sleeve, the upper diameter in duct equals bearing shell outer ring surface diameter, and is greater than the external diameter that thrust roller bearing encloses; The external diameter that duct mid diameter encloses under equaling thrust roller bearing, precision work is carried out on surface, and with thrust roller bearing under enclose precision-fit; Be connected to form the shaft shoulder with lower end surface in the middle part of duct, enclose under the thrust roller bearing of location.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410103846.8A CN103880106B (en) | 2014-03-19 | 2014-03-19 | Squirrel-cage type self-rinsing micro-bubble generator |
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| CN201410103846.8A CN103880106B (en) | 2014-03-19 | 2014-03-19 | Squirrel-cage type self-rinsing micro-bubble generator |
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| CN103880106B true CN103880106B (en) | 2015-04-08 |
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| CN104944495B (en) * | 2015-05-26 | 2017-03-08 | 中国石油大学(华东) | The equal mixing device of axial-flow type coaxial membrane tube micro air bubble |
| CN111068530B (en) | 2018-10-22 | 2022-02-22 | 中国石油天然气股份有限公司 | Microbubble generation device and equipment |
| JP2020203332A (en) * | 2019-06-14 | 2020-12-24 | 株式会社橋本テクニカル工業 | Grinding liquid supply device, grinding processing system, grinding processing method and cavitation processing module used therein |
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| JP4369804B2 (en) * | 2004-06-14 | 2009-11-25 | 旭有機材工業株式会社 | Floating separation method for organic wastewater |
| US9115006B2 (en) * | 2010-01-14 | 2015-08-25 | Spintek Filtration, Inc. | Gas bubble generation for coalescing |
| CN203741077U (en) * | 2014-03-19 | 2014-07-30 | 中国石油大学(华东) | Squirrel-cage type self-flushing microbubble generator |
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