CN205495838U - A rotatory efflux air agitation device for efflux formula flotation device - Google Patents
A rotatory efflux air agitation device for efflux formula flotation device Download PDFInfo
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- CN205495838U CN205495838U CN201620281202.2U CN201620281202U CN205495838U CN 205495838 U CN205495838 U CN 205495838U CN 201620281202 U CN201620281202 U CN 201620281202U CN 205495838 U CN205495838 U CN 205495838U
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- efflux
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Abstract
The utility model relates to a rotatory efflux air agitation device for efflux formula flotation device, including pan feeding pipe, whirl device, conical nozzle, initial hybrid tube, choke, this five part top -down intercommunication. Special structural design has three -dimensional speed when making the ore pulp from the nozzle outgoing, forms rotatory efflux, entrainments the air after getting into initial hybrid tube, carries out violent mixing, and the air constantly gets into through the air inlet of taking certainly simultaneously, accomplishes process of aerifing and preliminary turbulent mineralize mineralization. The corresponding no rotating efflux of the spread ratio in the environment fluid is fast around after the rotatory efflux outgoing, its ability of entrainmenting, mixes mixed cropping with all bigger than ordinary efflux. According to the theory of operation of efflux formula flotation device, rotatory efflux air agitation device can improve aerifys performance and reinforcing bubble mineralize mineralization, plays the positive role to further improving flotation effect.
Description
Technical field
This utility model belongs to preparation equipment field, relates to a kind of rotating jet inflating and stirring device for jet current type flotation machine.
Background technology
Jet current type flotation machine is widely used in the sorting of various mineral, and its airing form realizes by the Involving velocity of high-speed jet.Ore pulp jet beam enters mixing tube and sweeps away surrounding air, forms negative pressure so that air constantly enters from air inlet in pipe, completes gas, liquid, solid and blends.According to the operation principle of jet current type flotation machine, inflating and stirring device plays decisive role to flotation device inflation performance and separating effect, completes flotation device inflation and preliminary bubble mineralization in inflating and stirring device domestic demand.Jet flotation machine is continuous sorting operation, it is desirable to jet stability, keeps certain axial velocity, so could form certain negative pressure in mixing tube, be automatically drawn into air.Rotating jet has three-dimensional velocity, and compared with the jet produced without turn jet or single nozzle, its volume energy-absorbing power and blending effect are all greatly increased.For the rotating jet inflating and stirring device of jet current type flotation machine, its jet produced not only is needed to have certain axial velocity, it is also desirable to certain tangential velocity.Based on rotating jet superiority in velocity form, rotating jet inflating and stirring device can strengthen Involving velocity and blending effect, thus has actively impact on improving inflation performance with enhancing bubble mineralization.The mode producing rotating jet is roughly divided into two kinds: tangential pan feeding is put english and director element is put english.Single tangential pan feeding is put english so that the axial velocity of nozzle is developed by tangential velocity completely, and therefore axial velocity is the most weak, and the jet of such nozzle ejection easily spreads, and impacts subsequent inspiration；And single director element is put english and is made it possible to axial velocity maximum not at shaft core position, as seen patent No. CN1405429A, the jet nozzle (Fig. 1) that the Chinese invention patent " high-pressure rotary penetrates rock-breaking drilling method " of publication date 2003-3-26 is mentioned, its internally installed guide vane wheel is as director element.Owing to director element is typically located at nozzle center position.Often there is center low speed district in the rotating jet produced near axle center, axial velocity maximum is not at shaft core position, but has certain deviation distance with axle center, also can impact subsequent inspiration.Therefore the rotating jet that these modes produce is not appropriate for the inflating and stirring device of flotation device.
Summary of the invention
For above-mentioned existing problems, this utility model is from the axial velocity of jet and tangential velocity analysis, introduce the rotating jet inflating and stirring device to jet flotation machine, strengthening its Involving velocity and immixture by rotating jet, the separating effect improving jet current type flotation machine further is had a positive effect by this.
To achieve these goals, a kind of rotating jet inflating and stirring device for jet current type flotation machine of this utility model.It is made up of feeding pipe, conical nozzle, a diameter of D of feeding pipe0, a diameter of D of conical nozzle2；Being provided with swirl-flow devices between described feeding pipe and described conical nozzle, described swirl-flow devices includes spirillum and two kinds of rotating flow guidance structures of body of putting english.
Described conical nozzle end is connected with the initial mixing pipe with air inlet.
Described initial mixing pipe one end is connected with conical nozzle, and the other end connects trunnion.
The described a diameter of D of initial mixing pipe, a length of L1, and L1Minimum 4.38D；Distance L between described air inlet and nozzle0Minimum 6.2D2。
Described leptospira structure is the cylindrical solid with rectangular thread groove, and axially has straight-through round mouth, and spirillum is built-in to be fixed in straight tube, and its big footpath is equal to feeding pipe diameter D0, path is d0, axially free latus rectum is D1, and d0＞ D1＞ D2, its pitch P is 0.25D0～0.5D0, the angle of spiral 10～30 °, the number of turns is 0.5～1.5 circles.
Described swirl-flow devices is body structure of putting english, the internal portion that puts english is provided with and adds spin-block, for axial circular flow channel in the middle of described body of putting english, flow diameter is equal with conical nozzle inlet diameter, add spin-block circular flow channel outer shroud symmetry tangential distribution vertically, constituting grooved tangential runner, and add spin-block and straight tube wall not inscribe, adding spin-block number is 4-8.
Swirl-flow devices is as a kind of rotating flow guidance structure.When ore pulp has pressure to feed feeding pipe, after swirl-flow devices, obtain axial velocity and tangential velocity simultaneously, enter conical nozzle.
Conical nozzle end is connected with the initial mixing pipe with air inlet, and high-speed jet, after nozzle sprays, is difficult to diffusion, entering initial mixing pipe, volume forms certain negative pressuren zone in inhaling air around, mixing tube, air is constantly entered from air inlet, completes gas, liquid, solid simultaneously and blend.Due to after swirl-flow devices, then to conical nozzle, the jet of nozzle outgoing certain tangential velocity and axial velocity, the rotating jet defining low curl strengthens Involving velocity and the blending effect of jet self, favourable to flotation device inflation and mineralising.
] initial mixing pipe one end connect have trunnion, high-speed jet enters trunnion after initial mixing pipe is tentatively rolled up suction and blended, and the caliber of trunnion is less than initial mixing caliber, gassiness ore pulp jet enters trunnion and becomes narrow beam stream, now occurs enforceable secondary volume inhale and blend.Due to the length of rational mixing tube and diameter and air inlet position, trunnion does not structurally interfere with the stable growth of jet, and weakens volume energy-absorbing power and the blending effect of jet.
From pre-stage test, the position of air inlet influences whether the inflation effect of inflating and stirring device.Understand based on jet mechanics analysis, when the jet at nozzle develops into stable nowed forming, will be through several stages: the initial segment, changeover portion, main paragraph.And the stable development condition of jet inhales the volume of jet and crucial effect is played in blending.In order to not affect the stable growth of jet, through calculating, distance L between itself and nozzle0Minimum 6.2D2.Rotating jet enters trunnion after initial mixing pipe reaches full growth, and from test, flotation device inflation effect is had an impact by mixing tube length, and due to the impact shunk at trunnion suction tube, the growth of jet can be interfered with, have influence on stablizing of jet, thus affect its volume energy-absorbing power.Through calculating, mixed tube diameter is D, pipe range L1Minimum 4.38D.
Understanding based on test and numerical simulation, the structural parameters of rectangular thread groove all have influence on fluid through out-of-date energy loss, and three-dimensional velocity when certainly will have influence on outgoing is strong and weak.In the fixing number of turns, the highest flow process relative growth that makes of lift angle, and the number of turns increases, and flow process also can be made to increase, so taking suitable structural parameters.Ore pulp enters spirillum, a part of ore pulp is by axially free outflow, a part of ore pulp enters rectangular thread groove, being forced property carries out cylindrical helical flowing, two fluids is converged at conical nozzle contraction section, now being coupled by main axial velocity and tangential velocity in velocity form, nozzle contraction section makes again tangentially to flow and axially flows and all strengthened, at a high speed rotating jet after ejection.
Described swirl-flow devices for put english body structure time, described in the internal portion that puts english be provided with and add spin-block.Body of putting english is rotating flow guidance structure, when ore pulp has pressure to feed feeding pipe, after swirl-flow devices, obtains axial velocity and tangential velocity simultaneously, enters conical nozzle.
Adding spin-block and be shaped like arc block, separate fluid matasomatism, build grooved tangential runner, after its volume and number have influence on grooved tangential runner thus have influence on outgoing, three-dimensional velocity is strong and weak.Feeding pipe ore pulp is shunted by body of putting english, and a part is axially free stream, and another part is by the slipstream adding the grooved tangential runner offer that spin-block is constituted, and simultaneously under the drive of axially free stream, slipstream is strengthened.Entrance nozzle contraction section makes again tangentially to flow and axially flows and all strengthened, and forms rotating jet.
The beneficial effects of the utility model are: owing to have employed technique scheme, arrange compact in structure, arrange rationally, inflating and stirring device at jet current type flotation machine introduces rotating jet, by swirl-flow devices and conical nozzle, the three-dimensional velocity of jet during strengthening outgoing, form low curl rotating jet, compared with the jet produced without turn jet and single nozzle, jet entrainment ability at least improves more than 32%, the raising of volume energy-absorbing power makes jet can sweep along more gas, make its good charging, increase aeration quantity, the stirring action of flotation pulp is strengthened, active influence is had to improving jet current type flotation machine separating effect.
Due to jet from nozzle outgoing time self just there is three-dimensional velocity so that in initial mixing pipe, form region wider array of negative pressuren zone, inflating and stirring device internal gasifier had a major impact.Ore pulp is formed by solid-liquid two-phase mixtures, forms jet and sucks air in mixing tube, owing to the axial velocity of jet own is higher, and broken surrounding air, and tangential velocity enhances this effect so that this crushing is not only axial crushing, and is tangentially also occurring；It addition, gasification makes water become water vapour, form many micro-bubbles, it will selectively absorption is on target minreal, increases the hydrophobicity of its floatation process, have impetus to improving concentrate taste further.Now in mixing tube, turbulence intensity is also greatly enhanced, and bubble increases with ore particle touch opportunity, enhances turbulent flow mineralising.
Accompanying drawing explanation
Fig. 1 jet nozzle schematic diagram；
Fig. 2 rotating jet inflating and stirring device schematic diagram；
Fig. 3 is provided with spirochetal swirl-flow devices structural representation；
Fig. 4 leptospira structure schematic diagram；
Fig. 5 is provided with the swirl-flow devices structural representation of body of putting english；
Fig. 6 puts english body structural representation；
Fig. 7 inflating and stirring device schematic diagram；
In Fig. 2,3,4,5,6,7: 1. feeding pipe, 2. swirl-flow devices, 2-1. spirillum, 2-2. puts english body, and 2-21. adds spin-block, 3. conical nozzle, 4. initial mixing pipe, 4-1. air inlet, 5. trunnion.
Detailed description of the invention
Further illustrate with technical solutions of the utility model below in conjunction with the accompanying drawings.
Embodiment one: with reference to 2,3,4,7 schematic diagrams, rotating jet inflating and stirring device as shown in drawings, including feeding pipe 1, spirillum 2-1, conical nozzle 3, initial mixing pipe 4, trunnion 5, is sequentially co-axially mounted, its connected mode is that bolt is fixing to be connected.Spirillum 2-1 is the cylindrical solid with rectangular thread groove, and axially has straight-through round mouth, and rectangular thread groove is built-in to be fixed in straight tube, and its big footpath is equal to feeding pipe diameter D0, path is d0, axially free latus rectum is D1, a diameter of D of conical nozzle2, and d0＞ D1＞ D2, its pitch P is 0.25D0～0.5D0, the angle of spiral 10～30 °, the number of turns is 0.5～1.5 circles.
During work, separate unit feed pump can feed one or more rotating jet inflating and stirring device simultaneously.With the pressure of 0.2Mpa～0.3Mpa, the ore pulp prepared is fed feeding pipe 1, and this section is the flowing in typical pressure conduit.Arrive spirillum 2-1, a part of ore pulp is by axially free outflow, a part of fluid enters rectangular thread groove, being forced property carries out cylindrical helical flowing, and two fluids is converged at conical nozzle 3 contraction section, is now coupled by main axial velocity and tangential velocity in velocity form, nozzle contraction section makes again tangentially to flow and axially flows and all strengthened, after ejection, its axial velocity is maintained at 15-20m/s, tangential velocity 0.5-1.5m/s at a high speed, forms low curl rotating jet.Jet enters initial mixing pipe 4, starts volume and inhales and cut air, and air constantly enters from air inlet 4-1, carries out violent gas-liquid-solid mixing, it is achieved preliminary turbulent mineralising.Entering trunnion 5, flow of slurry becomes narrow beam stream, it is achieved secondary mandatory turbulent flow mineralising, enters back into flotation device and carries out floatation process.Wherein, each parameter be determined by treating capacity but must be fulfilled for d0＞ D1＞ D2。
Embodiment two: with reference to 2,5,6,7 schematic diagrams, as shown in drawings, including feeding pipe 1, put english rotating jet inflating and stirring device body 2-2, conical nozzle 3, initial mixing pipe 4, and trunnion 5 is sequentially co-axially mounted, its connected mode is that bolt is fixing to be connected.Put english to be provided with inside body 2-2 and add spin-block 2-21.The body 2-21 that puts english is middle for axial circular flow channel, flow diameter is equal with conical nozzle 3 inlet diameter, adds spin-block 2-21 circular flow channel outer shroud symmetry tangential distribution vertically, constitutes grooved tangential runner, and add spin-block 2-21 and straight tube wall not inscribe, adding spin-block number is 4-8.
During work, separate unit feed pump can feed one or more rotating jet inflating and stirring device simultaneously.With the pressure of 0.2Mpa～0.3Mpa, the ore pulp prepared is fed feeding pipe 1, and this section is the flowing in typical pressure conduit.Arrival is put english body 2-2, and a part of ore pulp is by axially free outflow, and a part of ore pulp enters and provides tangential runner by adding the grooved tangential runner that spin-block constitutes, and simultaneously under the drive of axially free stream, slipstream is strengthened.Entrance nozzle contraction section makes again tangentially to flow and axially flows and all strengthened, and forms rotating jet.Two fluids is converged at conical nozzle 3 contraction section, now coupled by main axial velocity and tangential velocity in velocity form, nozzle contraction section makes again tangentially to flow and axially flows and all strengthened, rotating jet after ejection at a high speed, its speed is maintained at 16-25m/s, tangential velocity 0.2-0.8m/s, forms low curl rotating jet.Jet enters initial mixing pipe 4, starts to roll up accretion cutting air, and air constantly enters from air inlet 4-1, carries out violent gas-liquid-solid mixing, it is achieved preliminary turbulent mineralising.Entering trunnion 5, flow of slurry becomes narrow beam stream, it is achieved secondary mandatory turbulent flow mineralising, enters back into flotation device and carries out floatation process.
Claims (6)
1. for a rotating jet inflating and stirring device for jet current type flotation machine, by feeding pipe (1), taper
Nozzle (3) forms, described feeding pipe (1) a diameter of D0, conical nozzle (3) a diameter of D2；It is special
Levy and be: between described feeding pipe (1) and described conical nozzle (3), be provided with swirl-flow devices (2), institute
The swirl-flow devices (2) stated includes spirillum and two kinds of rotating flow guidance structures of body of putting english.
Rotating jet inflating and stirring device the most according to claim 1, it is characterised in that: described taper
Nozzle (3) end is connected with the initial mixing pipe (4) with air inlet (4-1).
Rotating jet inflating and stirring device the most according to claim 2, it is characterised in that: described is initial
Mixing tube (4) one end is connected with conical nozzle (3), and the other end connects trunnion (5).
Rotating jet inflating and stirring device the most according to claim 2, it is characterised in that: described is initial
Mixing tube (4) a diameter of D, a length of L1, and L1Minimum 4.38D；Described air inlet (4-1) and spray
Distance L between mouth0Minimum 6.2D2。
Rotating jet inflating and stirring device the most according to claim 1, it is characterised in that: described eddy flow
Device (2) is spirillum (2-1) structure；Described spirillum (2-1) is the circle with rectangular thread groove
Post entity, and axially have straight-through round mouth, spirillum (2-1) is built-in to be fixed in straight tube, spirillum (2-1)
Big footpath is equal to feeding pipe (1) diameter D0, spirillum (2-1) path is d0, axially free latus rectum is D1,
And d0＞ D1＞ D2, spirillum (2-1) pitch P is 0.25D0～0.5D0, the angle of spiral 10～30 °, circle
Number is 0.5～1.5 circles.
Rotating jet inflating and stirring device the most according to claim 1, it is characterised in that: described eddy flow
Device (2) is body of putting english (2-2) structure, and internal being provided with of described body of putting english (2-2) adds spin-block (2-21)；
For axial circular flow channel in the middle of described body of putting english (2-1), flow diameter and conical nozzle (3) inlet diameter
Equal, add spin-block (2-21) circular flow channel outer shroud symmetry tangential distribution vertically, constitute grooved tangential runner,
And add spin-block (2-21) and straight tube wall not inscribe, adding spin-block number is 4-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620281202.2U CN205495838U (en) | 2016-04-06 | 2016-04-06 | A rotatory efflux air agitation device for efflux formula flotation device |
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| CN201620281202.2U CN205495838U (en) | 2016-04-06 | 2016-04-06 | A rotatory efflux air agitation device for efflux formula flotation device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689158A (en) * | 2016-04-06 | 2016-06-22 | 北京科技大学 | Rotary jet flow aerating agitation device for jet flow type flotation machine |
| CN110773329A (en) * | 2019-09-19 | 2020-02-11 | 中国矿业大学 | Strong turbulence generating device suitable for micro-fine particle rapid sorting |
| CN112723454A (en) * | 2020-12-04 | 2021-04-30 | 周美蓉 | Efficient jet air flotation machine for sewage treatment |
| CN113751210A (en) * | 2020-09-16 | 2021-12-07 | 江苏中浮矿业科技有限公司 | Cyclone accelerating device for flotation column and flotation column |
| CN114985127A (en) * | 2022-07-15 | 2022-09-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
-
2016
- 2016-04-06 CN CN201620281202.2U patent/CN205495838U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689158A (en) * | 2016-04-06 | 2016-06-22 | 北京科技大学 | Rotary jet flow aerating agitation device for jet flow type flotation machine |
| CN105689158B (en) * | 2016-04-06 | 2017-12-15 | 北京科技大学 | A kind of rotating jet inflating and stirring device for jet current type flotation machine |
| CN110773329A (en) * | 2019-09-19 | 2020-02-11 | 中国矿业大学 | Strong turbulence generating device suitable for micro-fine particle rapid sorting |
| CN113751210A (en) * | 2020-09-16 | 2021-12-07 | 江苏中浮矿业科技有限公司 | Cyclone accelerating device for flotation column and flotation column |
| CN112723454A (en) * | 2020-12-04 | 2021-04-30 | 周美蓉 | Efficient jet air flotation machine for sewage treatment |
| CN112723454B (en) * | 2020-12-04 | 2022-09-06 | 成都市蜀科科技有限责任公司 | Efficient jet air flotation machine for sewage treatment |
| CN114985127A (en) * | 2022-07-15 | 2022-09-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
| CN114985127B (en) * | 2022-07-15 | 2022-11-01 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for changing jet flow shape |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tangshan Jin Jie Industry Co., Ltd. Assignor: University of Science and Technology Beijing Contract record no.: 2017990000239 Denomination of utility model: Rotary jet flow aerating agitation device for jet flow type flotation machine Granted publication date: 20160824 License type: Exclusive License Record date: 20170622 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Tangshan Jin Jie Industry Co., Ltd. Assignor: University of Science and Technology Beijing Contract record no.: 2017990000239 Date of cancellation: 20180530 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20200406 |