CN105289390B - Jetting flow formula medicament decentralized system and the upgrading facility of sizing mixing using the system - Google Patents

Abstract

The present invention relates to coal slurry preprocessing technical field, and in particular to a kind of jetting flow formula medicament decentralized system and the upgrading facility of sizing mixing using the system.Jetting flow formula medicament decentralized system includes fluid jet nozzle and fluid flow tube road, and fluid jet nozzle includes outer tube body, is coaxially arranged rotating shaft in outer tube body, coaxially arranged active impeller and driven impeller in rotating shaft；The liquid direction that goes out on one siphunculus road of fluid flow tube road connection outer tube body is located in the tangential direction of active impeller and the line mixer for tentatively mixing above-mentioned ore pulp and medicament is arranged in the siphunculus road tube chamber.The system can be efficiently controllable realize medicament and ore pulp be uniformly mixed into material demand.Upgrading facility of sizing mixing includes blending bin and stepped mixing system, blending bin top layout medicament aerosol dispersion system and bottom sets fluid jet nozzle, the liquid outlet of blending bin and the different arrangement of the installation site of outer tube body.The equipment is especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, its high working efficiency and preprocessing process is quick and convenient.

Description

Jetting flow formula medicament decentralized system and the upgrading facility of sizing mixing using the system

Technical field

The present invention relates to coal slurry preprocessing technical field, and in particular to a kind of to select sizing mixing and modification for fine slime for ash difficulty high Jetting flow formula medicament decentralized system and the upgrading facility of sizing mixing using the system.

Background technology

Because the floatability of China's coal slime is generally poor, therefore coal slurry pretreatment is essential in floatation coal separation technique Link, is the prerequisite of the good technical-economic index of flotation device acquisition.The necessity of coal slurry pretreatment mainly has following four Point：1), that floating agent (nonpolar oils collecting agent and foaming agent) is fully dispersed, the floating agent of coal slime is insoluble or poorly soluble in Water, it is only that its is fully dispersed into substantial amounts of fine droplet, it could be uniformly mixed into coal slurry；2), by scattered flotation Medicament is blended in float coal slurry well, and nonpolar oils collecting agent forms relatively stable on the coal grain surface of different-diameter Oil film, improves the hydrophobicity of coal grain；3), floating agent is when coal grain surface generation physical-chemical reaction needs to have certain effect Between；4) float coal slurry, will be entered and will be diluted to rational concentration range.

In the pretreatment process of coal slurry, the dispersion of current flotation agent typically has three kinds of modes：

(1), mechanical dispersion

The XY series ore pulp preprocessors that China researches and develops the eighties in last century are after flotation agent is incorporated into dosing nozzle, to borrow The upper strata blade helped in agitator arm stator mixer rotates, and mechanically disperses, because the linear velocity of agitator arm is limited, Only 8.0m/s, the scattered droplet diameter of institute is larger, mixes in coal slurry not uniform enough, increased flotation agent consumption.

(2), emulsion dispersion

In the water-jetting emulsor structure that some coal preparation plants of China promote the use of, substantially press water sprays from nozzle at high speeds Go out, negative pressure is formed in jet chamber.Flotation agent is consequently inhaled and wraps up in and is rolled onto among jet, through hydraulic blow, shearing, is separated into< 15 μm of oil droplet, emulsion is sprayed by mixing tube.However, the water-jetting emulsor, is generally all the unilateral mode being used as medicine, should Mode causes the gas pressure that jet is subject to unstable, and the mixture homogeneity between medicament and aqueous is often relatively low, still treats further Improve.

(3) aerosol dispersion

The XK series kaskad apparatuses for pre-flotation pulp conditioning begun to use in China the eighties in last century, such as apply for artificial Tangshan state China Tech skill Patent name filed in 15 days January in 2010 of Co., Ltd is " the hybrid coal paste preprocessor of atomization " (application number： 201010033384.9) patent of invention text just discloses following technical scheme：It is by atomization system, upper box body and bottom The part of casing three constitutes.Atomization system is made up of main motor, flexible coupling, sleeve, haze disk and dosing funnel etc..Top Casing is atomized workspace for charging and flotation agent, and there is center feed chute in casing outside, and there is overflow launder the left and right sides.Lower part box is Coal slurry and the well-mixed working space of flotation agent, the left and right sides is mounted on three pieces of upper slides and two pieces of lower skateboards, each slide plate Upper uniform contour bank bar.When actually used, flotation agent is flowed into the sleeve above the disk that hazes through dosing funnel and pipeline, and is splashed Fall in the Pan Zhengmianzhongxinqu that hazes, stick at a high speed rotation card on formed one layer of thin liquid film, under the influence of centrifugal force to Plate edge is moved, and is droplet by the saw cut of plate edge；Enter float coal Jiang Jing centers feed chute and be assigned to upper box body both sides In downflow weir, wide in waterfall shape overflow along weir, it meets during letting out with flotation agent droplet, and some droplet is by weight Power directly drops to ground floor upper slide, afterwards, is mixed with the bank bar of the coal slurry of flotation agent by upper and lower slide plate, continuously jump up and Mixing so that coal slurry is sufficiently mixed with flotation agent droplet, until being discharged into flotation device from bottom half.As in field more Advanced coal slurry pretreatment unit, its flotation agent drop than emulsion dispersion drop will smaller an order of magnitude, dispersion effect compared with It is good；But, it has been found that being rotated because the dispersion effect of floating agent in said structure relies on the disk that hazes when actually used To realize, a sealed shape casing for forming confined space is generally required, the meaningless of vaporific medicament can be avoided to fly away, The formation of its closed environment but often resulted in the disk working environment that such as hazes it is poor and be easy to send product bug, cannot be for Slurries mixed process realizes observation directly perceived or even produces failure also to be difficult to many defects such as discovery in time, thus to execute-in-place and Maintenance work brings puzzlement；Additionally, the disk that hazes of high-speed rotation, too high for motor rotation speed requirements, namely must use Two grades of motors that rotating speed is up to 3000 revs/min can ensure its service behaviour, and this is all actual assembling, buys or even safeguard into Originally severe challenge is caused.

The content of the invention

One of purpose of the invention is to provide a kind of simple structure and rational jetting flow formula medicament disperse system System, with it is efficient and controllable realize medicament and ore pulp be uniformly mixed into material demand.In addition, present invention also offers a set of Using the upgrading facility of sizing mixing of said system, good quenched effect can be played to entering float coal mud, be especially suitable for difficult floating Bed for Fine Coal Modification demand of sizing mixing, its high working efficiency and preprocessing process is quick and convenient.

To achieve the above object, present invention employs following technical scheme：

A kind of jetting flow formula medicament decentralized system, at least including fluid jet nozzle and for providing fluid jet nozzle to mix The fluid flow tube road of liquid, it is characterised in that：The fluid jet nozzle includes outer tube body, the outer tube body profile in two ends internal diameter it is thick and in The thin necking down tubular structure of section internal diameter, fluid flow tube road is communicated in one end of outer tube body, and the outer tube body other end constitutes mixture export； It is coaxial in outer tube body to be arranged with rotating shaft, the coaxially arranged active impeller in close fluid flow tube road one end of rotating shaft and mixture export end is same Axle sets driven impeller；The fluid flow tube road is in threeway columnar structure, and wherein two siphunculus road is respectively communicated with medicament pipeline and ore pulp pipe Road, the liquid direction that goes out for connecting a siphunculus road of outer tube body is located in the tangential direction of active impeller and arrangement in the siphunculus road tube chamber Line mixer for tentatively mixing above-mentioned ore pulp and medicament.

The water conservancy diversion for making mixed liquor that driven impeller is impacted along driven impeller tangential direction is fixed with the inner chamber of outer tube body Stator；One end for disposing driven impeller of outer tube body is the gradually thick toroidal anemostat construction of bore, water conservancy diversion stator cloth It is placed in the close active impeller end of driven impeller.

The scroll impeller construction that water conservancy diversion stator is arranged in the line centered on outer tube body axis, and the liquid stream flow direction for being guided Arrangement in the same direction is turned to driven impeller.

A kind of upgrading facility of sizing mixing of application said system, at least including blending bin and the classification being arranged in blending bin Hybrid system, blending bin top layout medicament aerosol dispersion system and bottom set fluid jet nozzle；Medicament aerosol dispersion system bag The disk that hazes is included, the disk that hazes is located in the cavity of blending bin and is driven with the drive shaft of axis vertical；One of medicine of chemical tank Agent tube outlet extends to the card center of the disk that hazes；Haze disk disk edge lower section be provided for shear dispersion mixing liquid ring Shape dispersal unit；Arrange to enter for introducing the ore pulp of outside ore pulp at space between annular dispersal unit and the tank wall of blending bin Hopper, madial wall constitutes overflow wall for blending bin tank wall for the external groove sidevall of ore pulp feed chute, ore pulp by ore pulp feed chute overflow Wall overflow enters annular dispersal unit charging aperture to be sentenced and mixes with medicament；Fall at the discharging opening arranged beneath inclination angle of annular dispersal unit Fall plate, and it is to be constructed from blending bin tank wall to the bell mouth shape that extension is upwarped at drive axis that plate is fallen at inclination angle, is fallen at inclination angle Many bank bars are set gradually along mixed liquor direct of travel, on plate between inclination angle falls plate and drives between centers to have and fall for mixed liquor Gap；More than one group of agitator arm is also coaxially installed with drive shaft, the inclination angle that agitator arm is arranged in bell mouth shape construction is fallen Fall at plate lower section, stator wall is disposed with around agitator arm, stator wall is postponed and formed downwards by the inner ring that plate is fallen at inclination angle；Outward Body is coaxial with drive shaft and the bottom face through blending bin from bottom to top, and the mixture export of outer tube body points to orlop and stirs Mix at the wheel face of impeller, the liquid outlet of blending bin and the different arrangement of the installation site of outer tube body.

Pad is provided with one layer of flat false base spacer at the bottom face of the blending bin, and both gaps mix single to sandwiched Unit；Mixed cell and annular dispersal unit are formed by catch along mixed liquor flow direction interlaced arrangement.

Stroke diaphragm agitator is set at the tank wall of the blending bin, and stroke diaphragm agitator falls plate lower section positioned at inclination angle Place；The stroke diaphragm agitator includes being extended radially through along drive shaft the stroke axle of blending bin tank wall, and drives the stroke axle Make the motor acted along the linear reciprocation of bar length direction, the rod end positioned at mixing box cavity of stroke axle arranges macromolecule material Material barrier film；The film side of macromolecular material barrier film is fixed in the sleeve top gone out by the inwall projection of blending bin, macromolecule material Expect center and the affixed arrangement of stroke shaft rod end of barrier film.

Stroke diaphragm agitator be four and etc. height along blending bin tank wall circumferentially around uniform.

The rib of straight prismatic is radially arranged at the upper disk surface of the disk that hazes, rib extends to its disk by the axle center of the disk that hazes At edge and rib surface is serrated construction；Each rib edge hazes disk upper disk surface circumferentially around arrangement.

The cover plate of annular is covered with the top of the ore pulp feed chute of the annular, overfall is set through plate body on cover plate, Each overfall is uniform successively along the circumferential direction of cover plate.

It is disposed with along medicament flow direction on the medicament pipeline of the card center for extending to the disk that hazes of chemical tank Diaphragm metering pump, control valve and flowmeter.

The beneficial effects of the present invention are：

1), relatively conventional spray dispersion system, one aspect of the present invention make use of the high flow rate of mixed liquor, so that by master The coaxial synergy of movable vane wheel and driven impeller, and then realize that the automatic liquid stream under mechanical driver part stirs purpose.Work When making, using the flow velocity power of fluid, ore pulp takes medicament and pours at a high speed in active impeller and drive it to rotate, active impeller Timing Belt Dynamic driven impeller is rotated, and then causes medicament constantly being impacted by each impeller along outer tube body traveling process, stirred, and companion With the impact force of outer tube body tube wall, finally cause that mixed liquor is forced emulsion dispersion into fine droplet.On the other hand, ore pulp with Before medicament enters outer tube body, the pipe-line mixer of arrangement in the tube chamber is first passed around tentatively to be mixed, it is whole to ensure Mixed liquor is entered in the fluid jet nozzle with the admixture being more uniformly distributed.Ore pulp more than the especially suitable Bed for Fine Coal content of the present invention In preprocessing process, can be efficient and controllable realize medicament and ore pulp be uniformly mixed into material demand.

2), driven impeller feed liquor direction sets water conservancy diversion stator, so as to ore pulp can be promoted to be rushed with the tangential direction of driven impeller The wheel body of driven impeller is hit, meets hydrodynamics optimal movement feature.Under the percussion in above-mentioned restriction direction, mixed liquor meeting The colliding forces of optimal agitator arm impact, stirring and water conservancy diversion stator are obtained, its mixing dispersion effect can obtain further Lifting.Certainly, it is difficult to completely with accurate tangential direction incision driven impeller via the fluid of water conservancy diversion stator；Therefore, it is actual During operation, fluid with approach tangential direction incision also can, can equally lift the mixing efficiency and effect of original mixed liquor.

3), combined type mode of sizing mixing will be following main developing direction, present invention collection spray dispersion, aerosol dispersion, pipe Road mixing, fall plate mixing, high shear dispersed with stirring and be mixed in one, the depth for realizing coal slime is sized mixing modification.Wherein, medicament Aerosol dispersion system design mixing box cavity center upper portion position, including the disk that hazes, driving haze disk rotation drive shaft And point to the medicament tube outlet hazed at the dish axle heart.Medicament is delivered to the card of the disk that hazes by diaphragm metering pump accurate measurement Center, the disk that hazes rotates at a high speed, and under the influence of centrifugal force, medicament diffuses to form film to surrounding, so as to equably fall in ring The ore pulp that the top of shape dispersal unit goes out with overflow at ore pulp feed chute mixes, and flows into together in annular dispersal unit.

After by annular dispersal unit shear-mixed, mixed liquor drops to inclination angle and falls on plate.Plate is fallen by inclination angle Several groups of bank bars of upper design, low ash content coarse granule is close to skateboarding and is stopped by bank bar, and movement velocity is slow, pretreatment time It is long, promote its surface to adhere to enough and stabilization oil film, into flotation device after can quickly adhere to bubble floating.And ash content high Thin mud due to being worth without flotation, participate in stick operation without excessive, therefore can enter in next stage hybrid system faster.Its Structure can while the coarse grained medicament parcel of ash content high and mix uniformly effect is ensured, selectivity to reduce ash content high thin The pretreatment time of mud, it is to avoid the excessive flotation agent of its adsorption, just slow down their flotation in follow-up flotation device Speed, not only serves the effect for farthest mitigating ash thin mud high to the pollution of floatation clean coal, to lift its operating efficiency, The actual input amount of flotation agent is also greatly reduced simultaneously, and to be conducive to control, it pre-processes cost.

Agitator arm and stator wall constitute combined impeller, and its integral installation is same with the disk that hazes in the center of blending bin Axle is rotated.Material falls the top that plate most significant end is flowed into combined impeller from inclination angle, under the action of forced stirring effect of combined impeller, Further realize the collisional mixing of medicament and mineral.By the stator wall installed in the surrounding of agitator arm, coordinate from bottom to top The mixture export of the outer tube body of feed, is conducive to the collisional mixing of material.In the false base spacer of bottom design of stirring space And sandwiched installs mixed cell between the two, mixed material is mixed cell cube repeated segmentation and alters course and form vortex；By this On the other hand mixed cell, one side rectification ore pulp increases the mixing collision probability of mineral and medicament in transportation.

To sum up state, the present invention is the new size mixing equipment for integrating various functions of sizing mixing, can be played very to entering float coal mud Good quenched effect, is especially suitable for the modification demand of sizing mixing of difficult floating Bed for Fine Coal, its high working efficiency and preprocessing process is quickly square Just.

4), the stroke diaphragm agitator in blending bin tank wall circumferentially, motor can be with dynamic stroke axle certain Moved back and forth in stroke distances, so as to pull macromolecular material barrier film back and forth movement.The structure can ensure that blending bin tank wall surrounding Flow field space be in turbulent flow environment high, it is to avoid the flow fields environment of " center high shear, the low turbulent flow of surrounding ", be conducive to playing whole The quenched effect of sizing mixing of individual stirring space.

5), haze the smooth disk structure of disk relative to tradition, present invention radial direction at the upper disk surface of the disk that entirely hazes Gather jagged rib.When the disk driven shaft that hazes drives and rotates, medicament can be cut by the sawtooth gathered by disc surfaces Drop is cut into, so that extremely equably fall in the top of annular dispersal unit, to mix the annular dispersal unit of inflow with ore pulp, its Dispersed efficiency can be obviously improved.

6), by the overflow groove structure of ore pulp feed chute, it is ensured that the uniformity of charging, by using annular pan feeding, interior The pan feeding mode of side overflow, to maintain out-feed liquid stream stabilization, while forming certain discharge height, ore pulp can slowly overflow all the time Flow out ore pulp feed chute and be sufficiently mixed with medicament at annular dispersal unit.Cover plate is provided with above ore pulp feed chute, Cover plate is provided with some ore pulp discharging openings namely overfall, is imitated along the uniform overflow of ore pulp feed chute with further lifting ore pulp Really.

Brief description of the drawings

Fig. 1 is the structural representation of fluid jet nozzle；

Fig. 2 is the liquid flow arrow of mixed liquor and the relation schematic diagram of active impeller position；

Fig. 3 is the liquid flow arrow of mixed liquor and the relation schematic diagram of driven impeller position；

Fig. 4 is the structural representation of upgrading facility of sizing mixing；

Fig. 5 is the position relationship top view between ore pulp feed chute, annular dispersal unit and the disk that hazes.

Illustrate each structure as follows with component names corresponding relation of the invention：

10- fluid jet nozzles

11- outer tube body 12- rotating shaft 13- active impeller 14- driven impeller 15- water conservancy diversion stators

20- blending bins 21- vacation base spacer 22- mixed cells

30- haze disk 31- rib 40- drive shaft 50- chemical tanks 60- annular dispersal unit

70- ore pulp feed chute 71- cover plate 72- overfalls

80- falls at inclination angle plate 81- bank bar 82- stator wall 90- agitator arms

101- stroke axle 102- motor 103- macromolecular material barrier film 104- sleeves

110- diaphragm metering pump 120- control valve 130- flowmeter 140- pipe-line mixers

Specific embodiment

For ease of understanding, here in connection with Fig. 1-5, described further below is made to specific embodiment of the invention：

1.1 critical piece introductions

(1) blending bin

The design of blending bin 20 is to take into full account that the uniform of pan feeding ore pulp feeds, and is had with medicament to reach each section ore pulp Identical contact mixing probability.

Blending bin 20 can be cylindric or hexahedron shape, and other profiles are alternatively certainly, and cylindrical shape is as shown in Figure 4 Mixing box body.And as illustrated in figures 4-5, ore pulp feed chute 70 is fixed at the top tank wall of blending bin 20.70 liang of ore pulp feed chute Dilution water feeding mouth is arranged in side, is conducive to rapidly and uniformly adjusting pulp density.To ensure the uniform overflow of surrounding, in ore pulp pan feeding The top of groove 70 is provided with cover plate 71, and cover plate 71 is provided with some ore pulp discharging openings namely overfall 72, is 8 in Fig. 5, also dependent on setting Standby size number of aperture can be adjusted.

(2) medicament decentralized system

Medicament decentralized system includes medicament aerosol dispersion system and jetting flow formula medicament decentralized system.

2.1) medicament aerosol dispersion system

Hazed low speed rotation in disk 30, and medicament under the influence of centrifugal force, film is diffuseed to form to surrounding, and by the disk that hazes The serrate rib 31 of band in 30 cards cuts into drop, is finally tangentially dispersed in the upper of annular mixed cell 60 Side.Ore pulp is uniform in the entrance of annular mixed cell 60 after dilution at scattered oil drops and above-mentioned ore pulp feed chute 70 at overflow Mixing is flowed into.

The medicament aerosol dispersion system of this equipment design is distinguished with traditional aerosol dispersion coal paste preprocessor and is：Tradition Aerosol dispersion system be medicament uniquely charging and dispersal device, in order that a large amount of enough dispersions of medicament, its disk that hazes is necessary Rotate at a high speed, the maintenance of equipment replacement cycle is short, and fault rate is high.And the disk 30 that hazes of this equipment is the one of numerous medicament dispersion links Ring, its rotating speed is middle low speed；Meanwhile, in order to realize the dispersion of medicament at the low rotational speed, the key technology taken includes：1) it is, accurate The true medicament amount of feeding, the oil film that medicament feeds too many formation is too thick, is unfavorable for the dispersion of medicament；Fed to accurately measure Pharmaceutical quantities, design has used diaphragm metering pump 110.Diaphragm metering pump 110 itself has function of measuring, and synchronous in medicament pipeline On be also devised with flowmeter 130, to be corrected to measuring pump in use.2), in the whole card of disk 30 that hazes Zigzag rib 31 is devised, under the influence of centrifugal force, medicament diffuses to form film and by saw cut into drop to surrounding, It is able to flow into annular dispersal unit 60 after uniformly mixing with ore pulp.

2.2) jetting flow formula medicament decentralized system

The not enough shortcoming of pharmaceutical quantities is fed in order to make up medicament aerosol dispersion system, is also designed in the bottom position of this equipment Jetting flow formula medicament decentralized system on the other side.

The core of jetting flow formula medicament decentralized system is the fluidic device shown in Fig. 1-3.Compared with conventional fluidic device, The pretreatment of the more applicable many ore pulps of Bed for Fine Coal content of this fluidic device.Fine particle content is more, and coal slime pretreatment time requirement of sizing mixing is long, Therefore medicament can be shifted to an earlier date and mix one with ore pulp, then through pipe-line mixer 130 it is tentatively well mixed after, tangentially give incident flow spray At head.Under the high flow rate power of mixed liquor, liquid stream drives active impeller 13 to drive driven impeller 14 to rotate.Collocation is in driven impeller The water conservancy diversion stator 15 of 14 pan feeding top design, water conservancy diversion stator 15 promotes mixed liquor to be impacted from movable vane with tangent line or close to line direction Wheel 14, meets hydrodynamics optimal movement feature, medicament under the collisional mixing of the impact, stirring and water conservancy diversion stator 15 of impeller, It is able to compulsory emulsification and is dispersed into satisfactory fine droplet.

(3) mixed cell

According to the flow direction of ore pulp and the spatial arrangement structure of equipment, ingenious rational devising mixes knot to this equipment Structure, it had both realized being sufficiently mixed for medicament and ore pulp, and the whole pretreatment space fluid motion morphology of stabilization is played a part of again, Fluid motion is set to meet the optimal flow location form sized mixing.Wherein, the ore pulp after dilution mixes with medicament dispersion emulsion in annular After the top of unit 60 is converged, annular mixed cell 60 can be together flowed into.On the one hand, annular mixed cell 60 is by a number of Catch presses predetermined angular and intersects composition, and material is through the repeated segmentation of annular mixed cell 60 and alters course and forms vortex, reaches mixing Purpose.In addition, the annular cutting channel of annular mixed cell 60, promotes material to enter subsequent processing with optimal fluidised form, so that Material is avoided to fall the direct impact of plate 80 to inclination angle.

And the mixed cell 22 in Fig. 4, when being equally used for realizing the mixing of medicament and ore pulp and ensureing longer pretreatment Between, the decentralization of material is improved to reach and mixed uniformly purpose is ensured.

(4) plate is fallen at inclination angle

Fall plate 80 and act in inclination angle：All of pretreatment ore pulp all undoubtedly can play stirring and stir by stirring region with maximum Mix the effect of impeller；Fall the top of the exit design in combined impeller of plate 80 in inclination angle, it is therefore an objective to promote all of coal slurry to lead to Most strong stirring region is crossed, it is quenched to realize sizing mixing for all coal slimes or even most difficult-to-float coal.And why inclination angle falls plate 80 The inclination angle of ramp shaped is designed to, is, in order to reduce the movement velocity of fluid, to be allowed to stop pretreatment space time longer.Fall at inclination angle Several groups of bank bars 81 designed on plate 80 that fall are then that, in order to distinguish the pretreatment time of large or fine granule, coarse granule is close to plate face motion simultaneously Stopped by bank bar, movement velocity is slow, and pretreatment time is longer；Conversely, fine grained movement velocity is faster, required pretreatment time Can accordingly shorten, finally realize the efficient mixed processing effect of its controllableization.

(5) Forced Mixing stirring space

Forced Mixing stirring space is mainly made up of the multiple layer combination impeller being made up of with agitator arm 90 stator wall 82.Figure In 4,90 points of agitator arm is upper strata agitator arm and lower floor's agitator arm, to constitute bilayer combination blade wheel structure.In paddle The surrounding of wheel 90 is provided with stator wall 82.It is the mixture export of fluidic device of the present invention immediately below lower floor's agitator arm. Stroke diaphragm agitator is arranged at the tank wall of blending bin 20 of surrounding.

Material falls the end of plate 80 and is flowed into first top of combined impeller from inclination angle, under the constraint of stator wall 82, All of ore pulp all flows through the stirring area of bilayer combination impeller, and ore pulp and medicament are stirred by the high shear and pressure of bilayer combination impeller The collisional mixing effect of the effect of mixing and stator system, is able to efficiently mix.The mixed liquor that fluid jet nozzle is ejected also is acted on In stirring region, multiphase flow Forced Mixing stirring region is formd, further ensure that the depth of coal slime is sized mixing modification.In circle The tank wall of cylindricality blending bin 20 arranges one group of stroke diaphragm agitator every 90 ° of angles, and motor 102 exists with dynamic stroke axle 101 Moved back and forth in certain stroke distances, so that the back and forth movement of macromolecular material barrier film 103 is driven, to ensure the stream of tank wall surrounding Space is in turbulent flow environment high, it is to avoid the flow fields environment of " center high shear, the low turbulent flow of surrounding ", is conducive to playing and entirely stirs Mix the quenched effect of sizing mixing in space.

After material is through above-mentioned mixing, then the crack constituted from the bottom face of false base spacer 21 and blending bin 20 is flowed into, from The position central to the left outflow of the bottom face of blending bin 20.The opening of above-mentioned crack is near tank wall position, and blending bin 20 Liquid outlet forms the flow field of four circumferential center ring streams, it is ensured that the stabilization in stirring space flow field in middle position, prevents material Crossfire.A runner is formed in above-mentioned crack, mixed cell 22 is installed, to give full play to sizing mixing for whole equipment space in runner Effect.

2nd, 1 process aspect

This equipment plays good quenched effect to entering float coal mud, is particularly suitable for the modification of sizing mixing of difficult floating Bed for Fine Coal.One In secondary flotation or secondary flotation, floatation feed by cut thick equipment such as a hydrocyclone group, hydrocyclone group add spiral, Cut after thick sieve bend, a section thick sieve bend add the technical gradings such as section thick sieve bend series connection and be divided into thick, fine fraction.Fine fraction is finally used The on-mechanical agitation type flotation machine such as sorting such as flotation column, air jet flotation machine, now using this equipment than traditional pre- place of coal slurry Reason equipment is better.Reason is that in this kind of technique, the ratio that fine fraction accounts for floatation feed is big, and the pretreatment that coal slime needs is more It is long, it is necessary to environment of sizing mixing it is higher, rather than agitation impeller flotator function of sizing mixing in itself is weaker, can substantially be carried using this equipment The effect of such technique high, its operating efficiency and efficiency can be obviously improved.

Claims (7)

1. a kind of upgrading facility of sizing mixing of application jetting flow formula medicament decentralized system, wherein jetting flow formula medicament decentralized system At least include fluid jet nozzle (10) and for providing fluid jet nozzle (10) with the fluid flow tube road of mixed liquor, the fluid jet nozzle (10) including outer tube body (11), outer tube body (11) profile is in the two ends internal diameter slightly thin necking down tubular structure of stage casing internal diameter, Fluid flow tube road is communicated in one end of outer tube body, and outer tube body (11) other end constitutes mixture export；Outer tube body (11) interior coaxial sleeve It is provided with rotating shaft (12), the coaxially arranged active impeller in close fluid flow tube road one end (13) of rotating shaft (12) and mixture export end is coaxial Driven impeller (14) is set；The fluid flow tube road is in threeway columnar structure, and wherein two siphunculus road is respectively communicated with medicament pipeline and ore pulp Pipeline, the liquid direction that goes out for connecting a siphunculus road of outer tube body is located in the tangential direction of active impeller (13) and the siphunculus road tube chamber Inside arrange the line mixer (130) for tentatively mixing above-mentioned ore pulp and medicament；

It is fixed with the inner chamber of outer tube body (11) for making mixed liquor impact driven impeller along driven impeller (14) tangential direction (14) water conservancy diversion stator (15)；One end for disposing driven impeller (14) of outer tube body (11) is the gradually thick toroidal of bore Anemostat is constructed, and water conservancy diversion stator (15) is arranged in the close active impeller end of driven impeller (14)；

The scroll impeller construction that water conservancy diversion stator (15) is arranged in the line centered on outer tube body (11) axis, and the liquid stream for being guided Flow direction turns to arrangement in the same direction with driven impeller (14)；It is characterized in that：

Originally upgrading facility of sizing mixing at least includes blending bin (20) and the stepped mixing system being arranged in blending bin (20), mixing Case (20) top layout medicament aerosol dispersion system and bottom set fluid jet nozzle；Medicament aerosol dispersion system includes the disk that hazes (30) disk (30), is hazed in the cavity of blending bin (20) and is driven with the drive shaft (40) of axis vertical；Chemical tank (50) One of medicament tube outlet extend to the card center of the disk that hazes (30)；Haze disk (30) disk edge lower section set use In the annular dispersal unit (60) of shearing dispersion mixing liquid；It is empty between annular dispersal unit (60) and the tank wall of blending bin (20) Between locate arrangement for introducing the ore pulp feed chute (70) of outside ore pulp, the external groove sidevall of ore pulp feed chute (70) is blending bin (20) case Wall and madial wall constitute overflow wall, and ore pulp enters annular dispersal unit (60) charging aperture by the overflow wall overflow of ore pulp feed chute (70) Sentence and mix with medicament；Fall plate (80) at the discharging opening arranged beneath inclination angle of annular dispersal unit (60), plate is fallen at inclination angle (80) it is to be constructed from blending bin (20) tank wall to the bell mouth shape that extension is upwarped at drive shaft (40) axis, plate is fallen at inclination angle (80) many bank bars (81) are set gradually along mixed liquor direct of travel on, inclination angle is fallen between plate (80) and drive shaft (40) and has confession The gap that mixed liquor falls；More than one group of agitator arm (90), agitator arm (90) are also coaxially installed with drive shaft (40) It is arranged in the inclination angle of bell mouth shape construction to fall at plate (80) lower section, stator wall (82) is disposed with around agitator arm (90), it is fixed Sub- wall (82) is postponed and is formed downwards by the inner ring that plate (80) is fallen at inclination angle；Outer tube body and drive shaft (40) are coaxially and from bottom to top The bottom face through blending bin (20), the mixture export of outer tube body pointed at the wheel face of orlop agitator arm, blending bin (20) liquid outlet and the different arrangement of installation site of outer tube body.

2. upgrading facility of sizing mixing according to claim 1, it is characterised in that：Padded at the bottom face of the blending bin (20) and set There is one layer of flat false base spacer (21), both gaps are used to sandwiched mixed cell (22)；Mixed cell (22) and annular point Throwaway unit (60) is formed by catch along mixed liquor flow direction interlaced arrangement.

3. upgrading facility of sizing mixing according to claim 1, it is characterised in that：Punching is set at the tank wall of the blending bin (20) Journey barrier film agitator, stroke diaphragm agitator falls at plate (80) lower section positioned at inclination angle；The stroke diaphragm agitator includes edge Drive shaft (40) extends radially through the stroke axle (101) of blending bin (20) tank wall, and drives the stroke axle (101) work rectangular along bar To linear reciprocation act motor (102), stroke axle (101) positioned at blending bin (20) inner chamber rod end arrange high score Sub- material septum (103)；The film side of macromolecular material barrier film (103) is fixed in and is gone out by the inwall projection of blending bin (20) Sleeve (104) top, center and stroke axle (101) affixed arrangement of rod end of macromolecular material barrier film (103).

4. upgrading facility of sizing mixing according to claim 3, it is characterised in that：Stroke diaphragm agitator be four and etc. highly Along blending bin (20) tank wall circumferentially around uniform.

5. upgrading facility of sizing mixing according to claim 1, it is characterised in that：At the upper disk surface of the disk that hazes (30) radially The rib (31) of straight prismatic is set, and rib (31) extends to its Pan Yuanchu by the axle center of the disk that hazes (30) and rib surface is in sawtooth Columnar structure；Each rib (31) edge hazes disk (30) upper disk surface circumferentially around arrangement.

6. upgrading facility of sizing mixing according to claim 1, it is characterised in that：The top cover of the ore pulp feed chute (70) sets Have annular cover plate (71), on cover plate (71) through plate body set overfall (72), each overfall (72) along cover plate (71) ring Shape direction is uniform successively.

7. upgrading facility of sizing mixing according to claim 1, it is characterised in that：Chemical tank (50) extends to the disk that hazes (30) Card center medicament pipeline on be disposed with diaphragm metering pump (110), control valve (120) along medicament flow direction And flowmeter (130).