CN103880106A - Squirrel-cage type self-rinsing micro-bubble generator - Google Patents
Squirrel-cage type self-rinsing micro-bubble generator Download PDFInfo
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- CN103880106A CN103880106A CN201410103846.8A CN201410103846A CN103880106A CN 103880106 A CN103880106 A CN 103880106A CN 201410103846 A CN201410103846 A CN 201410103846A CN 103880106 A CN103880106 A CN 103880106A
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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 a kind of oily(waste)water and industrial wastewater air flotation and process the microbubble generator of use.
Background technology
At present, municipal wastewater and Industrial Wastewater Treatment sector application more have pressurized dissolved air flotation and an 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 forms is tiny, but needs in addition the equipment such as configuration gas boosting handling equipment, filler dissolving and outgas device, makes that system composition is 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 dissolving shear history, the particle diameter of the microbubble that produces is substantially in 30 μ m left and right, 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 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, be impeller rotary-cut air supporting, its main drawback is that the rotatable parts that mechanical system has are safeguarded complicated, simultaneity factor cannot be carried out reflux operation, and impeller rotary-cut air floatation machine exists liquid level control difficulty more greatly, to be prone to short Liu Hesiliu district, 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 inhomogeneous; Waterpower induction flotation, it is jet air float, the power consumption of this technology is low, there is no rotatable parts in ejector or high speed Venturi tube simultaneously, and shearing force is less, can not cause the broken loose of adherend, but the microbubble particle diameter of generation is larger, and its efficiency is subject to the impact of ejector or high speed Venturi tube outlet aperture larger, the water quality and the pressure that enter nozzle are required to comparatively harshness, and less fluctuation may affect greatly purification efficiency.
In sum, in applying at the scene, there is many problems in existing pressurized dissolved air flotation and induction flotation, this just need to innovate on the basis of existing feasibility technology, 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
The defect and the deficiency that exist in order to overcome 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 processing use 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 be a kind of squirrel-cage of exploitation from rinsing microbubble generator, mainly by microbubble tank, swirl vane, squirrel-cage microporous membrane pipe assembly, from washing assembly, liquid-inlet pipe, drain pipe, air inlet manifold, rinse manifold and several parts of blow-off pipe form.In air supporting operation, stoste is flowed through after liquid-inlet pipe enters microbubble tank and forms rotating fluid by swirl vane and is flowed into squirrel-cage microporous membrane pipe, gas stream enters microbubble tank the fine air-flow of logical filmed passing tube micropore cutting formation through air inlet manifold simultaneously, rotating fluid is sheared continuously and is washed away fine air-flow generation microbubble, discharges finally by drain pipe.Along with the dirt progressive additive of film pipe micropore, the air chamber of microbubble tank and rectification room pressure are poor is down to after minimum permissible value, microbubble generator proceeds to the operation of flushing certainly of " dual cleaning " automatically, 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, between biplate flange, seals by paracril 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 chamber, air chamber and three airtight chamber of plenum chamber, the indoor swirl vane of putting of rectification, and the stoste that enters rectification chamber through liquid-inlet pipe forms rotating fluid, the utilization ratio of gas can improve bubble generation time; Air chamber forms by upper lower clapboard is airtight, and built-in squirrel-cage microporous membrane pipe assembly as the passage of gas flow, is used as the mobile passage of scavenging solution when microbubble occurs and purges operation while rinsing operation; Plenum chamber is formed by upper spacer and end socket packing, and the rotating fluid that carries 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; in the time that producer internal pressure is too high; pressure safety valve is by mechanical effect relief pressure; between pressure security valve union and end socket, adopt and insert weldering and realize and being connected, and adopt ring flange to connect with pressure safety valve.Upper and lower two pressure difference transmitter joints are installed on air chamber bottom and rectification chamber tank skin, pressure difference transmitter automatically detects the pressure difference signal of air chamber and rectification chamber and changes electric signal into, drive-motor starts, and implements from rinsing operation, adopts to insert weldering and realize and being connected between pressure difference transmitter joint and tank body.The dirt accumulation such as tank base is designed with scum pipe, rectification chamber 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 weldering and realize and being connected between scum pipe and tank body.
Liquid-inlet pipe enters the passage of microbubble tank as stoste, be positioned at tank base, and drain pipe flows out the passage of microbubble tank as gas-liquid two-phase current stabilization, be positioned at end socket top, and 180 ° of liquid-inlet pipe and scum pipes are arranged symmetrically with and are with drain pipe " ∫ " shape layout.Blow-off pipe is as certainly rinsing in operation containing soiling solution body and discharging the passage of microbubble tank containing dirty air-flow, be positioned at the central part of tank base, its outlet is positioned at scum pipe below, and entrance is connected by the boss of ring flange and screw and tank base, between tank body boss and flange, seal by paracril pad.
Air inlet manifold is injected the passage of microbubble tank air chamber as gas, be positioned at position on the lower side, air chamber middle part, guarantees that rotating fluid produces enough bubble in flowing in microporous membrane pipe from bottom to top; 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 axis is respectively just to microporous membrane tubular axis line, further guarantees that the microbubble producing is even and generating capacity is large.Rinse manifold as the passage that certainly rinses scavenging solution in operation and inject microbubble tank air chamber, be positioned at position on the upper side, air chamber middle part, rinsing manifold is also made up of 8 Ge Yeguan branches, position is the each tracheae branch of corresponding air inlet manifold respectively, guarantees scrubbing effect when scavenging solution washes away film pipe micropore from top to bottom.Blow-off pipe outlet exports in the same way with scum pipe, and reverse with liquid-inlet pipe entrance, and 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 rinsing all adopts between the tank skin of manifold and microbubble tank to be inserted weldering and realizes and being connected, and liquid-inlet pipe, drain pipe, blow-off pipe, scum pipe, air inlet manifold and flushing manifold all adopt elbow to realize pipeline with biplate flange to be connected.
Swirl vane surface nickel phosphor plating processing, and evenly distributed along rectification chamber tank skin, number is 8, and swirl vane tooth trace is the spiral-line launching along rectification chamber tank skin, and the helix angle value between the evolute of this spiral-line and tank body axis reduces and increases with stoste viscosity.Each swirl vane comprises nipper and back of the body tooth, and nipper tooth root place disc and rectification chamber tank skin are tangent, and assurance stoste can be cut the front flank of tooth comparatively glibly; The flank of tooth of nipper adopts recessed arc surface, and mobile stoste forms herein low pressure and produces rotating fluid; Nipper tooth top and back of the body tooth tooth top place disc are tangent, and the rotating fluid before guaranteeing 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 chamber tank skin crossover sites adopt arc transition, avoids swirl vane cross section and rigidity to occur sharply to change, to guarantee that the blade in rotating fluid has good mechanical property.
Swirl vane increases along tooth trace gradually at the normal plane end 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 reduces impact assurance that stoste flows blade and forms rotating fluid stably.All evenly distributed swirl vane topmost end faces are corresponding one by one with squirrel-cage microporous membrane pipe position, guarantee that the stoste that enters rectification chamber by liquid-inlet pipe forms after rotating fluid on every rotating paddle, can flow into continuously and stably the microporous membrane pipe of correspondence position separately, can accelerate thus the velocity of shear of stoste, 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 member, and its material selection ceramic membrane film pipe with a large amount of " honeycomb fashion " fine pores, and has some strength and erosion resistance on tube wall, guarantee the microbubble granularity that microporous membrane pipe produces tiny, evenly and generating capacity large.Microporous membrane pipe two ends respectively with the eyelet UNICOM of upper lower clapboard, and guarantee 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 is all selected 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, on inner ring surface, be 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 annular plectane, realize and 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 fixingly with upper spacer outer ring surface running fit, be processed with the tapped through hole being evenly arranged with upper spacer screw hole equal amts below groove.Lower clapboard is used for microbubble tank bottom to be divided into air chamber and rectification Shi Liangge airtight chamber, and its structure and size are identical with upper spacer, and just its outer ring surface adopts upper coarse and lower fine back taper.The structure of lower ring plate and size are identical with upper ring plate, and just the cross section of annular recesses is isosceles trapezoid, and groove anchor ring coordinates and realizes location with the back taper outer ring surface of lower clapboard, the verticality of the levelness of lower clapboard and microporous membrane pipe in assurance.Between upper spacer and upper ring plate and lower clapboard and lower ring plate, connected and sealed by paracril pad by screw, in microbubble tank, the material of all screws is all selected stainless steel.
Comprise 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 from washing assembly.Motor is selected servosystem, and shaft coupling adopts flange-face coupling, realizes connecting between motor shaft and transmission shaft by bolt, and motor drives irrigating sleeve and washpipe to be rotated by transmission shaft and axle sleeve after step-down gear slows down.Electric machine support upper end adopts annular plectane, plectane surrounding is evenly arranged four eyelets, connects with motor by bolt, and three rack legs all adopt same model angle steel, its upper end and plectane weld and lower end and end socket weld, thereby realize fixing between motor and microbubble tank.
Transmission shaft is used for transferring 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, after installation flat key, connects with shaft coupling, and 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 that are evenly arranged.
Between transmission shaft and end socket, adopt the double seal of packing seal and end socket labyrinth seal, gland sealed filler is selected oil immersion asbestos packing, adopts three along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle between end socket labyrinth seal and transmission shaft.Between transmission shaft and upper spacer and coupling shaft and lower clapboard, adopt the labyrinth seal of same model to seal, between labyrinth seal and transmission shaft, three of same employings are along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle.
Irrigating sleeve is used for realizing the UNICOM between washing assembly and squirrel-cage microporous membrane pipe assembly, when air supporting operation, irrigating sleeve departs from microporous membrane pipe and is positioned at the lower nozzle on lower clapboard, and position between two microporous membrane pipes, from washing assembly not with microporous membrane pipe UNICOM, and while certainly rinsing operation, the just lower nozzle to microporous membrane pipe of irrigating sleeve, from washing assembly and microporous membrane pipe UNICOM.Every cover is equipped with two irrigating sleeves from washing assembly, and is arranged symmetrically with along drive shaft axis, and 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, is processed with loopful groove on ring body, is used for placing spring; Lower end is processed with eyelet, connects with the elbow of washpipe by inserting weldering.
Washpipe provides power conduct containing soiling solution body and contains the passage of dirty air flow stream to blowdown pipeline for certainly rinsing irrigating sleeve rotation in operation, 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 connects 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, and the bearing shell outside axle body is run through in location, and spindle nose and axle body lower surface are connected to form the shaft shoulder, locate on the thrust roller bearing running through outside spindle nose to enclose; Spindle nose outer ring surface carries out precision work, and on thrust roller bearing, encloses shrink-fit.
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 guarantee the lubricant effect of the two.Bearing shell two halves cut open body seam crossing and are designed with oil duct, further guarantee that bearing shell is fully reliable for oil supply.
Sleeve outer ring surface diameter equals the internal diameter of the middle eyelet 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 enclosing on thrust roller bearing; The external diameter that duct middle part diameter equals to enclose under thrust roller bearing, precision work is carried out on surface, and with thrust roller bearing under enclose precision-fit; Middle part, duct is connected to form the shaft shoulder with lower end surface, under the thrust roller bearing of location, encloses, and realizes thus the fixing of thrust roller bearing.
The technique effect that the present invention can reach is that stoste enters microporous membrane pipe form rotating fluid on rotating paddle after again, can accelerate the velocity of shear of stoste, the utilization ratio of gas while improving bubble generation; 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, can avoid the strong shearing action of microbubble generator to stoste stream, guarantee the microbubble granularity that complete assembly produces tiny, evenly and generating capacity large; Control valve on air inlet manifold is adjusted air input automatically to control bubble generating capacity, the pressure safety valve on end socket top discharges too high pressure automatically by mechanical effect, pressure difference transmitter on air chamber and rectification chamber automatically detects pressure difference signal and changes electric signal into simultaneously, 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 be rotated by transmission shaft after step-down gear slows down, and rinses successively microporous membrane pipe until regeneration completes from rinsing operation; The flushing operation of scavenging solution dirt in rinsing manifold 8 liquid pipe branch flush film pipe micropores, bound gas is through the purging operation of 8 tracheae branches of air inlet manifold, i.e. and the dirt of film pipe micropore can be thoroughly cleaned in dual cleaning; Microbubble tank adopts upper lower clapboard to be divided into the unique texture of rectification chamber, air chamber and three airtight chamber of plenum chamber, goes up between lower clapboard and ring flat-plate and adopts screw attachment simultaneously, makes microporous membrane pipe freely to dismantle and to change; Adopt packing seal and labyrinth seal to realize sealing from washing assembly; Microbubble generator compact construction, is that the layout of whole air supporting choosing sled is saved space, and 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 that rinses 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 that rinses 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 that rinses squirrel-cage microporous membrane pipe assembly in microbubble generator.
Fig. 6 is that squirrel-cage is from rinsing the structure diagram from washing assembly in microbubble generator.
Fig. 7 is that squirrel-cage is from rinsing the structure diagram from washing assembly irrigating sleeve and washpipe in microbubble generator.
Fig. 8 is that squirrel-cage is from the air supporting work flow sketch that rinses microbubble generator.
Fig. 9 is that squirrel-cage is from the flushing work flow sketch that rinses microbubble generator.
Figure 10 is that squirrel-cage is from the purging work flow sketch that rinses 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 Fig. 2, squirrel-cage is from rinsing microbubble generator by forming 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.When assembling, first liquid-inlet pipe 5 and blow-off pipe 6 and pipeline thereof are received on microbubble tank 2 tank bodies successively, then will insert in the rectification chamber of microbubble tank 2 from the irrigating sleeve of washing assembly 1 and washpipe and install lower clapboard, then by microporous membrane pipe, transmission shaft and axle sleeve are inserted in the air chamber of microbubble tank 2 and are installed upper spacer, swirl vane 4 topmost end faces are corresponding one by one with each microporous membrane pipe position of squirrel-cage microporous membrane pipe assembly 3, finally install respectively microbubble tank 2 end sockets, shaft coupling and motor, and drain pipe 9 is received on microbubble tank 2 end sockets, each tracheae branch of air inlet manifold 7 and Ge Yeguan branch and the pipeline thereof of flushing manifold 8 are received on microbubble tank 2 tank bodies in turn.
In Fig. 1 and Fig. 2, squirrel-cage is in the time rinsing microbubble generator debugging, first whole device is carried out to hydro-test, test pressure is 1.25 times of design pressure, and inspection has or not leakage from sealing, tank flange, adapter and manifold flange, pressure difference transmitter piezometric tube and the valve of shaft seal, microbubble tank 2 end sockets and the tank body of washing assembly 1.In service, observe the microbubble granularity that produces whether tiny and even, and whether the pressure reduction of air chamber and rectification chamber normal.While maintenance, the bimester of per, regular deslagging once, by the valve on the scum pipe of manual unlocking tank base, can be discharged the slag inclusion sewage after cleaning; Every two years the parts of a detachable squirrel-cage microporous membrane pipe assembly 3 clean.When dismounting squirrel-cage microporous membrane pipe assembly 3, first pressure safety valve, fluid pipeline, motor, shaft coupling and transmission shaft sealing etc. are dismantled successively; Then turn on the studs on microbubble tank 2 end sockets, 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 and clean, the dirts such as obstinate greasy dirt can clean with alkali cleaning or with detergent, and dirts such as incrustation scale and anvil cinder, available hydrochloric acid cleaning.
In Fig. 1 and Fig. 2, when air supporting, the flow velocity of stoste and flow can be by regulating the variable valve on liquid-inlet pipe 5 to realize.When air supporting and purging operation, the each tracheorrhaphy of air inlet manifold 7 props up gas flow rate in exit gas jet velocity and tracheae and realizes by the variable valve in the each tracheae of adjusting branch.In the time rinsing operation, squirrel-cage microporous membrane pipe assembly 3 can be realized by the working pressure that regulates scavenging solution with the inside and outside differential pressure of microbubble tank 2 air chambers.In the time rinsing operation, rinse scavenging solution flow velocity in manifold 8 each liquid pipe branch outlet scavenging solution jet velocity and liquid pipe and realize by the variable valve in adjusting Ge Yeguan branch.
In Fig. 3 and Fig. 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 is realized and being connected with end socket 11 by inserting weldering, and adopts ring flange to connect with pressure safety valve; Pressure difference transmitter joint 16 is realized and being connected with tank body 14 air chambers and rectification chamber respectively by inserting weldering, 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 and rinsing all adopts between the tank skin of manifold 8 and microbubble tank 2 to be inserted weldering realization and is connected.Swirl vane 4 is realized and being connected with tank body 14 rectification chambers by circumferential weld, and evenly distributed along rectification chamber tank skin.
In Fig. 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 connect 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; Between upper spacer 17 and upper ring plate 18 and lower clapboard 20 and lower ring plate 21, connect and seal by paracril pad by screw.
In Fig. 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 chambers.When air supporting, in rotating fluid, entrained microbubble amount can realize by the height of adjusting microporous membrane pipe 19.When air supporting, after stock solution flow increases, the contained microbubble amount of unit volume stoste can guarantee by the quantity that increases microporous membrane pipe 19.
In Fig. 6, in washing assembly 1, motor 22 slows down by step-down gear, and connects rear drive irrigating sleeve 31 and washpipe 32 is rotated by shaft coupling 23, transmission shaft 27 and axle sleeve 29.Electric machine support 24 connects with motor 22 by bolt, and is fixed on by welding support leg on the end socket 11 of microbubble tank 2.Between transmission shaft 27 and end socket 11, adopt the double seal of packing seal 25 and end socket labyrinth seal 26, between transmission shaft 27 and upper spacer 17, adopt upper spacer labyrinth seal 28 in conjunction with ○-shaped seal ring, between washpipe 32 coupling shafts and lower clapboard 20, adopt lower clapboard labyrinth seal 30 in conjunction with ○-shaped seal ring simultaneously, realize the sealing from washing assembly.
In Fig. 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 surfaces and lower clapboard 20, between the endoporus of closed tube 34 locating shafts and spring case 36, form moving sets, 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 realized the connection between irrigating sleeve 31 and washpipe 32 by inserting weldering, and coupling shaft 33 is realized the connection between axle sleeve 29 and washpipe 32 by spline; Bearing shell 39, between threeway 38 axle bodies and sleeve 40, avoids washpipe 32 to wear and tear; Thrust bearing 41 is positioned on threeway 38 spindle noses, is used for balancing the whole axially loaded from washing assembly 1.
In Fig. 8, when air supporting operation, close from washing assembly 1 and flushing manifold 8, the position of irrigating sleeve 31 between two microporous membrane pipes 19, the stoste liquid-inlet pipe 5 of flowing through enters the rectification chamber of microbubble tank 2 bottoms, this indoor stoste with rectification pressure that is full of, stoste forms rotating fluid by swirl vane 4, and flow into the inner chamber of squirrel-cage microporous membrane pipe 19 through lower clapboard 20, gas stream enters the sealed gas chamber at microbubble tank 2 middle parts through the each tracheae of air inlet manifold 7 branch simultaneously, this chamber is full of the gas with design pressure, gas forms fine air-flow by the micropore cutting on microporous membrane pipe 19, rotating fluid is sheared continuously and is washed away fine air-flow generation microbubble, the rotating fluid that carries microbubble enters the plenum chamber on microbubble tank 2 tops through upper spacer 17, after collecting, gas-liquid two-phase current stabilization discharges through drain pipe 9.When microbubble tank 2 internal pressures are when 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 rectification chamber and the air chamber of microbubble tank 2 reduces gradually, after the difference of design pressure in air chamber and the indoor rectification pressure of rectification is lower than minimum permissible pressure value, pressure difference signal is transformed into electric signal by pressure difference transmitter, and drive-motor starts the operation of flushing certainly of implementing " dual cleaning ".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, rinsing manifold 8 opens, wash liquid stream enters the air chamber of microbubble tank 2 through rinsing manifold 8 Ge Yeguan branches, this chamber 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 be rotated, when irrigating sleeve 31 just to squirrel-cage microporous membrane pipe assembly 3 in when the lower nozzle of two symmetrical microporous membrane pipes 19, the logical filmed passing tube micropore of scavenging solution forms fine liquid stream and constantly washes away the dirt in micropore, what produce enters the inner chamber of microporous membrane pipe 19 containing soiling solution body, 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, in the time that the difference of design pressure in air chamber and the indoor rectification pressure of rectification reaches zero, pressure difference transmitter is sent guard signal, rinses operation and completes.
In Figure 10, after flushing operation completes, carry out from the second step gas purging operation of rinsing operation, rinsing manifold 8 closes, and air inlet manifold 7 is opened, gas stream enters the air chamber of microbubble tank 2 through the each tracheae of air inlet manifold 7 branch, this chamber is full of the gas with design pressure, when irrigating sleeve 31 just to squirrel-cage microporous membrane pipe assembly 3 in when the lower nozzle of two symmetrical microporous membrane pipes 19, the logical filmed passing tube micropore cutting of gas forms fine air-flow and constantly purges dirt residual on micropore, what produce enters the inner chamber of microporous membrane pipe 19 containing dirty air-flow, flow in drain pipe 9 by lower clapboard 20, finally discharged by blow-off pipe 6.Circumferential motion by irrigating sleeve 31 and washpipe 32 purges squirrel-cage microporous membrane pipe 19 successively, thoroughly cleans the dirt of 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 is sheared continuously and washed away fine air-flow generation microbubble; In rinsing operation, first be to rinse operation, the logical filmed passing tube micropore of scavenging solution forms fine liquid stream and constantly washes away the dirt in micropore, then purge operation, the logical filmed passing tube micropore cutting of gas forms fine air-flow 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 chamber, air chamber and three airtight chamber of plenum chamber, the indoor swirl vane of putting of rectification; Air chamber forms by upper lower clapboard is airtight, and built-in squirrel-cage microporous membrane pipe assembly as the passage of gas flow, is used as the mobile passage of scavenging solution when microbubble occurs and purges operation while rinsing operation; Plenum chamber is formed by upper spacer and end socket packing, and the rotating fluid that carries 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, be positioned at end socket top, and 180 ° of liquid-inlet pipe and scum pipes are arranged symmetrically with and are with drain pipe " ∫ " shape layout;
One blow-off pipe; Described blow-off pipe is positioned at the central part of tank base, and its outlet is positioned at scum pipe below;
One air inlet manifold; Described air inlet manifold is positioned at position on the lower side, air chamber middle part, 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 axis is respectively just to microporous membrane tubular axis line;
One rinses manifold; Described flushing manifold, as the passage that certainly rinses scavenging solution in operation and inject microbubble tank air chamber, is positioned at position on the upper side, air chamber middle part, rinses manifold and is also made up of 8 Ge Yeguan branches, and position is the each tracheae branch of corresponding air inlet manifold respectively;
One swirl vane; The surface nickel phosphor plating processing of described swirl vane, and evenly distributed along rectification chamber tank skin, number is 8, swirl vane tooth trace is the spiral-line launching along rectification chamber tank skin; Swirl vane increases along tooth trace gradually at the normal plane end 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 member, its material selection ceramic membrane film pipe, on tube wall with a large amount of " honeycomb fashion " fine pores; Microporous membrane pipe two ends respectively with the eyelet UNICOM of upper lower clapboard, and guarantee 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, motor drives irrigating sleeve and washpipe to be rotated by transmission shaft and axle sleeve after step-down gear slows down; Electric machine support is realized fixing between motor and microbubble tank, and irrigating sleeve is realized the UNICOM between washing assembly and squirrel-cage microporous membrane pipe assembly, and every cover is equipped with two irrigating sleeves from washing assembly, and is arranged symmetrically with along drive shaft axis; Washpipe provides power conduct containing soiling solution body and contains the passage of dirty air flow stream to blowdown pipeline for irrigating sleeve rotates, bearing shell employing dissection type structure, and material selection mmaterial, 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 the middle eyelet 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, in the time that producer internal pressure is too high, pressure safety valve is by mechanical effect relief pressure;
Upper and lower two pressure difference transmitter joints are installed on the air chamber bottom of described microbubble tank and rectification chamber tank skin, and pressure difference transmitter automatically detects the pressure difference signal of air chamber and rectification chamber 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 chamber tank skin are tangent, the flank of tooth of nipper adopts recessed arc surface, nipper tooth top and back of the body tooth tooth top place disc are tangent, 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: in described swirl vane, all evenly distributed swirl vane topmost end faces are corresponding one by one with squirrel-cage microporous membrane pipe position, guarantee that the stoste that enters rectification chamber by liquid-inlet pipe forms after rotating fluid on every rotating paddle, flows into the microporous membrane pipe of correspondence position separately continuously and stably.
5. squirrel-cage according to claim 1, from rinsing microbubble generator, is characterized in that: in the middle of described upper spacer, on inner ring surface, be processed with the loopful sealing groove of equidistant layered arrangement, sealing groove matches with the labyrinth seal of this position; In the middle of upper ring plate, the upper end of inner ring surface is processed with the annular recesses of a square-section, realizes fixing with upper spacer outer ring surface running fit;
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 and realizes location with the back taper outer ring surface of lower clapboard, the verticality of the levelness of lower clapboard and microporous membrane pipe in assurance.
6. squirrel-cage according to claim 1, from rinsing microbubble generator, is characterized in that: the described double seal that adopts packing seal and end socket labyrinth seal in washing assembly between transmission shaft and end socket, and gland sealed filler is selected oil immersion asbestos packing; Between transmission shaft and upper spacer and coupling shaft and lower clapboard, adopt the labyrinth seal of same model to seal, between labyrinth seal and transmission shaft, adopt three along the evenly distributed ○-shaped seal ring enhanced leaktightness of axle.
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 that are evenly arranged.
8. squirrel-cage according to claim 1, from rinsing microbubble generator, 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;
On the spring case ring body of described irrigating sleeve, be processed with loopful groove, be used for placing spring.
9. squirrel-cage according to claim 1, from rinsing microbubble generator, 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 in middle supervisor's 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, and the bearing shell outside axle body is run through in location, and spindle nose and axle body lower surface are connected to form the shaft shoulder, locate on the thrust roller bearing running through outside spindle nose to enclose; Spindle nose outer ring surface carries out precision work, and on thrust roller bearing, encloses shrink-fit.
10. squirrel-cage according to claim 1, from rinsing microbubble generator, 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 enclosing on thrust roller bearing; The external diameter that duct middle part diameter equals to enclose under thrust roller bearing, precision work is carried out on surface, and with thrust roller bearing under enclose precision-fit; Middle part, duct is connected to form the shaft shoulder with lower end surface, under the thrust roller bearing of location, encloses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410103846.8A CN103880106B (en) | 2014-03-19 | 2014-03-19 | Squirrel-cage type self-rinsing micro-bubble generator |
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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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| CN103880106A true CN103880106A (en) | 2014-06-25 |
| CN103880106B CN103880106B (en) | 2015-04-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944495A (en) * | 2015-05-26 | 2015-09-30 | 中国石油大学(华东) | Axial-flow coaxial membrane tube microbubble uniform mixing device |
| 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 |
| US11179683B2 (en) | 2018-10-22 | 2021-11-23 | Petrochina Company Limited | Microbubble generation device and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349354A (en) * | 2004-06-14 | 2005-12-22 | Asahi Organic Chem Ind Co Ltd | Floatation separation treatment method of organic wastewater |
| WO2011088236A1 (en) * | 2010-01-14 | 2011-07-21 | 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 |
-
2014
- 2014-03-19 CN CN201410103846.8A patent/CN103880106B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349354A (en) * | 2004-06-14 | 2005-12-22 | Asahi Organic Chem Ind Co Ltd | Floatation separation treatment method of organic wastewater |
| WO2011088236A1 (en) * | 2010-01-14 | 2011-07-21 | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944495A (en) * | 2015-05-26 | 2015-09-30 | 中国石油大学(华东) | Axial-flow coaxial membrane tube microbubble uniform mixing device |
| US11179683B2 (en) | 2018-10-22 | 2021-11-23 | Petrochina Company Limited | 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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| CN103880106B (en) | 2015-04-08 |
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