CN109046792A - A kind of mixed flow type microbubble generator and bubble distributer - Google Patents

A kind of mixed flow type microbubble generator and bubble distributer Download PDF

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Publication number
CN109046792A
CN109046792A CN201811244061.7A CN201811244061A CN109046792A CN 109046792 A CN109046792 A CN 109046792A CN 201811244061 A CN201811244061 A CN 201811244061A CN 109046792 A CN109046792 A CN 109046792A
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CN
China
Prior art keywords
bubble
flow type
mixed flow
type microbubble
microbubble generator
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Granted
Application number
CN201811244061.7A
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Chinese (zh)
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CN109046792B (en
Inventor
孙伟
卫召
韩海生
王若林
胡岳华
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Central South University
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Central South University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/02Froth-flotation processes
    • B03D1/025Froth-flotation processes adapted for the flotation of fines

Abstract

The invention discloses a kind of mixed flow type microbubble generators, including the collapsible tube, trunnion and diffuser being sequentially connected to, the output end of the diffuser is docked with efferent duct, the input end of the collapsible tube is docked with closed gas-liquid mixed room, the gas-liquid mixed room is equipped with pressed gas air inlet pipe and fluid injection pipe, is equipped with helical blade in the efferent duct.The invention also discloses a kind of bubble distributers comprising above-mentioned microvesicle generators.The present invention combines high pressure solution air elutriation and goes out the method that method and Venturi tube jet stream are formed at two kinds of microvesicles of bubble, and bubble is further broken up using helical blade, a large amount of diameters can be formed in the microvesicle of 0.1-0.3mm, being formed by bubble has the characteristics that bubble size is smaller, dispersion ratio is more uniform, and the adjusting of bubble diameter can be realized by replacing the helical blade of different size, have many advantages, such as that job stability height, nozzle are not easy to plug.

Description

A kind of mixed flow type microbubble generator and bubble distributer
Technical field
The invention belongs to mining equiment flotation technology field more particularly to a kind of mixed flow type microbubble generators and bubble distribution Device.
Background technique
Flotation is the important channel for recycling valuable mineral in nonferrous metallic ores, and flotation column has compared to other floatation equipments High concentration ratio, equipment are installed and the lot of advantages such as maintenance is simple, production process is easily controllable, especially sorts to fine mineral particle It is with the obvious advantage, gradually develop into the main floatation equipment of nonferrous metal mine.Bubble is the indispensable key of froth flotation Factor, an effective bubble generator should can generate tiny and uniform bubble under maximum possible aeration quantity. Therefore, the research of flotation column bubble generator is one of most important aspect of flotation column research.
Flotation column bubble generator is divided into internal foam maker and external foam maker according to bubble occurring mode.Internal foam maker It common are standpipe foam maker, filtering disc type foam maker, gravel bed foam maker etc., but these foam makers easily occur in production Fouling, blocking often result in flotation column and are not normally functioning, thus seldom use now, the big measurement of external microvesicle generators at present Become mainstream for internal microvesicle generators.The foaming processes that external bubble generator uses usually have electrolysis method, pressure dissolution Method and mechanical bubble revulsion etc., external bubble generator solves the problems, such as that foam maker is susceptible to plugging, and industrially obtains wide General application.Static mixer can air self-suction and aeration quantity it is big, the size of bubble can be manually adjusted, do not blocked without clear Reason, but its structure is complex, and internal structure requirement on machining accuracy is very high;Swirler type bubble generator is not easy to plug, and works as gas When steeping generator work, flotation column liquid level is more stable, when flotation column does not work, does not need to exclude extra ore pulp, but the gas It is uneven to steep generator bubble distribution, and with segregation phenomena;The bubble diameter that self-suction microbubble generator generates is small, but its is right It is passed through the more demanding of gas, work is not sufficiently stable.
Chinese invention patent 201610467816.4 discloses a kind of fine flotation electrolysis microvesicle generators.But Above-mentioned microvesicle generators using electrolysis foaming, electrolysis foaming is at high cost, electrode life is limited, replacement electrode cost equally compared with Height, and it is electrolysed the oxygen generated and hydrogen belongs to extremely incendive gas, there are larger security risks in use process!Its institute The bubble of generation includes hydrogen, oxygen and general air bubble, these three bubbles are due to density difference, in Mineral Floating Process Also can be different to the adhesion strength of particle, this influences whether the flotation of mineral grain to a certain extent.
Summary of the invention
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, an object of the present invention It is to provide a kind of mixed flow type microbubble generator and bubble distributer, which can form that bubble size is small, dispersion Uniform microvesicle, and job stability is high.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of mixed flow type microbubble generator, including the collapsible tube, trunnion and diffuser being sequentially connected to, the diffuser Output end is docked with efferent duct, and the input end of the collapsible tube is docked with closed gas-liquid mixed room, on the gas-liquid mixed room Equipped with pressed gas air inlet pipe and fluid injection pipe, helical blade is equipped in the efferent duct.
Further, the axis of the fluid injection pipe is overlapped with the axis of the trunnion, the fluid injection pipe and institute Air inlet pipe is stated to arrange in angle.
Further, the size of the angle is 40~45 °.
Further, the cone angle of the collapsible tube is 30~35 °.
Further, the cone angle of the diffuser is 35~40 °.
Further, the longitudinal length ratio of the collapsible tube, trunnion and diffuser is 1:4:2.
Further, the spout of the fluid injection pipe is the conical nozzle that cone angle is 15~20 °.
A kind of bubble distributer, at least two annular gas distribution pipes including being arranged concentrically and being connected by connecting tube and Several above-mentioned mixed flow type microbubble generators are evenly equipped with venthole on the tube wall of each annular gas distribution pipe, are located at outermost ring It is symmetrically arranged on shape gas distribution pipe and corresponds the air inlet being connected to each efferent duct.
Further, adjacent annular gas distribution pipe, which passes through, is located at several connecting tubes companies uniformly distributed between the two and in a ring It is logical.
Compared with prior art, the invention has the following beneficial effects:
1. combining high pressure solution air elutriation goes out the method that method and Venturi tube jet stream are formed at two kinds of microvesicles of bubble, it is formed by micro- Bubble has bubble size smaller, and dispersion is relatively uniform, and has structure simple, and job stability is high, and nozzle is not easy to plug Advantage can also add foaming agent in water flow.
2. the helical blade being equipped in efferent duct can further break up bubble, a large amount of diameters can be formed in 0.1- The microvesicle of 0.3mm, and the adjusting of bubble diameter can be realized by replacing the helical blade of different size.
3. mixed flow microvesicle can be uniformly and stably distributed in flotation column cylinder by bubble distributer, be conducive in floatation equipment The efficient mineralization of bubble and mineral.
Detailed description of the invention
Fig. 1 is invention mixed flow type microbubble generator structural schematic diagram;
Fig. 2 is that bubble distributer of the present invention is mounted on the structural schematic diagram on flotation column.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of mixed flow type microbubble generator, including tube body 1, tube body 1 include collapsible tube 5, the larynx being sequentially communicated Pipe 6 and diffuser 7, the outlet of diffuser 7 are connected with efferent duct 9, and the import of collapsible tube 5 and closed gas-liquid mixed room 4 are direct Connection, gas-liquid mixed room 4 are equipped with gas-pressurized air inlet pipe 2 and fluid injection pipe 3.
The course of work of microvesicle generators is as follows: the fluid sprayed at a high speed from fluid injection pipe 3 introduces gas-liquid mixed room 4 In, make to form negative pressure in gas-liquid mixed room 4, high pressure draught is injected into gas-liquid mixed room 4 through air inlet pipe 2, due to water flow high speed It moves there are huge pressure difference between the negative pressure generated and high pressure gas, gas is entered in water body by a large amount of dissolutions, and water flow exists Since the diminution of tube body cross section causes pressure gradually to convert to kinetic energy at collapsible tube 5, flow velocity is accelerated, and gas and liquid two phases are being shunk Pipe forms strong turbulent fluctuation energy, and gas is sheared, torn by turbulent flow, blending forms a large amount of minor diameter bubbles, and further in larynx It is mixed in pipe 6, exchanging for violent quality and energy occurs for fluid and gas, and completes gas-liquid in the exit of trunnion 6 The energy transfer process of decentralized medium, in diffuser 7, gas and liquid two phases carry out mutual mass transfer, pass energy, due to diffuser cross The unexpected increase in section, leads to flows decrease, and the kinetic energy of gas-liquid mixed stream gradates as pressure energy, and bubble is further dispersed into For the smaller microvesicle of diameter, while the gas dissolved in water body further dissolves out, and a large amount of microvesicles are formed in diffuser.
The present embodiment combines high pressure solution air elutriation and goes out the method that method and Venturi tube jet stream are formed at two kinds of microvesicles of bubble, institute's shape At bubble have the characteristics that bubble size is smaller, dispersion ratio is more uniform, and can be by adjusting hydraulic pressure and air pressure, replacement not The spiral clipper of same specification realizes the adjusting of bubble diameter, has many advantages, such as that job stability height, nozzle are not easy to plug.With biography System Venturi tube acts on molten gas by self-priming and compares, and there are huge pressures between the negative pressure that water flow high-speed motion generates and high pressure gas Power is poor, and gas is entered in water body by a large amount of dissolutions, and the gas of these dissolutions can largely be precipitated in diffuser, in addition, by height Addition foaming agent can also further increase bubble effect in pressure water source.
Invention the present embodiment mixed flow type microbubble generator is equipped with helical blade in efferent duct, and helical blade is removably pacified In efferent duct and coaxially setting.The major diameter of helical blade and the ratio of path are 2:1, and lead angle is 25~30 °, Screw pitch is 5~10mm.Gas-liquid mixed stream can rotate automatically to form the turbulent flow of rotation along the hand of spiral by helical blade, The turbulent flow further shears bubble, further realizes the refinement of bubble, and bubble size is stablized in 0.1-0.3mm, and can be with Helical blade by replacing different size realizes the adjusting of bubble diameter.
Specifically, the axis of fluid injection pipe 3 is overlapped with the axis of trunnion 6, by above-mentioned setting can collapsible tube 5, The stable flow field that is evenly distributed is generated in trunnion 6 and diffuser 7, on the one hand can be formed stable active force to gas, be obtained Diameter is distributed more uniform bubble, on the other hand can also reduce fluid when by trunnion and the friction of tube wall, reduce edge Journey energy loss improves energy conversion efficiency.
Preferably, the injection direction of fluid injection pipe 3 intersects with the injection direction of air inlet pipe 2 and there are certain angle, Corner dimension is preferably 40~45 °.Air inlet pipe 2 is a certain included angle with trunnion central axes, is conducive to the transverse flow for increasing gas Speed can increase the collision shear force of turbulent flow and gas at collapsible tube, be conducive to the dispersion of gas.
It preferably, is further bubble disintegration, the longitudinal section of collapsible tube 5 and diffuser is taper.Wherein, collapsible tube 5 cone angle is 30~35 °, and the cone angle of diffuser 7 is 35~40 °, collapsible tube 5, trunnion 6, diffuser 7 longitudinal length ratio be 1:4:2, the spout of fluid injection pipe 3 are the conical nozzle that cone angle is 15~20 °, and efferent duct 8 is equal diameter pipeline and its internal diameter Equal with the exit internal diameter of diffuser 7, by above-mentioned setting, bubble size can be refined further.
Referring to fig. 2, a kind of bubble distributer, including at least two annulars for being arranged concentrically and being connected by connecting tube 10 Gas distribution pipe 11 and several above-mentioned mixed flow type microbubble generators, it is each annular gas distribution pipe 11 tube wall on be evenly equipped with venthole, be located at Circular symmetric is equipped with the air inlet being connected to each efferent duct 9 one-to-one correspondence and (does not show in figure on outermost annular gas distribution pipe 11 Out).
Specifically, this implementation, using two annular gas distribution pipes 11, the diameter ratio of two annular gas distribution pipes 11 is 1:2, connection Pipe 10 is evenly arranged in the annular space between two annular gas distribution pipes, is set on outermost layer annular gas distribution pipe 11 there are four air inlet, To being connected to a bubble distributer on each air inlet.In practical applications, this bubble distributer is paid the utmost attention to be applied to floating It selects on column, annular gas distribution pipe is arranged in flotation column, and 4 mixed flow type microbubble generators are mounted on the side wall of flotation column cylinder 12 And be connected to the air inlet on annular gas distribution pipe, pressurised stream enters from the fluid injection pipe of mixed flow type microbubble generator, adds It presses air to enter from the air inlet pipe of mixed flow type microbubble generator, forms a large amount of micro-bubbles at diffuser, bubble passes through air inlet Mouth enters shape gas distribution pipe, and is sprayed by the venthole on shape gas distribution pipe, and formation is evenly distributed stable in flotation column cylinder Rise bubble.
Above-described embodiment is only to clearly demonstrate examples made by the present invention, rather than the restriction to embodiment.For For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description It is dynamic.Here without can not be also exhaustive to all embodiments.And the obvious variation or change thus amplified out It is dynamic to be still in the protection scope of this invention.

Claims (9)

1. a kind of mixed flow type microbubble generator, including the collapsible tube, trunnion and diffuser being sequentially connected to, the diffuser it is defeated Outlet is docked with efferent duct, it is characterised in that: the input end of the collapsible tube is docked with closed gas-liquid mixed room, the gas-liquid Mixing chamber is equipped with pressed gas air inlet pipe and fluid injection pipe, is equipped with helical blade in the efferent duct.
2. mixed flow type microbubble generator according to claim 1, it is characterised in that: the axis of the fluid injection pipe and institute The axis for stating trunnion is overlapped, and the fluid injection pipe and the air inlet pipe are arranged in angle.
3. mixed flow type microbubble generator according to claim 2, it is characterised in that: the size of the angle is 40~45 °.
4. mixed flow type microbubble generator according to claim 1 or 2, it is characterised in that: the cone angle of the collapsible tube is 30 ~35 °.
5. mixed flow type microbubble generator according to claim 1 or 2, it is characterised in that: the cone angle of the diffuser is 35 ~40 °.
6. mixed flow type microbubble generator according to claim 1 or 2, it is characterised in that: the collapsible tube, trunnion and expansion The longitudinal length ratio of separate tube is 1:4:2.
7. mixed flow type microbubble generator according to claim 1 or 2, it is characterised in that: the spout of the fluid injection pipe The conical nozzle for being 15~20 ° for cone angle.
8. a kind of bubble distributer, it is characterised in that: including at least two annulars for being arranged concentrically and being connected by connecting tube Gas distribution pipe and several described in any item mixed flow type microbubble generators of claim 1-7, the tube wall of each annular gas distribution pipe On be evenly equipped with venthole, on outermost annular gas distribution pipe annular be equipped with corresponded with each efferent duct be connected into Port.
9. bubble distributer according to claim 8, it is characterised in that: adjacent annular gas distribution pipe, which passes through, to be located between the two And uniformly distributed several connecting tubes connections in a ring.
CN201811244061.7A 2018-10-24 2018-10-24 Mixed-flow type microbubble generator and bubble distributor Active CN109046792B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704447A (en) * 2019-03-05 2019-05-03 苏州方舟环保科技有限公司 A kind of urban river water acid-base accommodation device
CN109908712A (en) * 2019-04-24 2019-06-21 攀钢集团钛业有限责任公司 The air and liquid mixer absorbed for titanium tetrachloride
CN110193429A (en) * 2019-05-23 2019-09-03 三门峡亚太科技有限公司 A kind of ultralow grade alumyte waste residue is without transmission bulk flotation device and floatation process
CN110479127A (en) * 2019-07-18 2019-11-22 中国矿业大学 A kind of micro-nano bubble generating device and the method for generating micro-nano bubble
CN110947525A (en) * 2019-12-16 2020-04-03 李宾 Nanobubble flotation column
CN111081609A (en) * 2019-12-26 2020-04-28 西安奕斯伟硅片技术有限公司 Cleaning and etching system
CN111663040A (en) * 2020-06-22 2020-09-15 中南大学 Method for enhancing oxygen oxidation iron removal in solution by using microbubble generator
WO2020193845A1 (en) * 2019-03-22 2020-10-01 Hilla Consulting Oy A fluid suspension tube
CN112808476A (en) * 2019-11-15 2021-05-18 中国石油天然气集团有限公司 Nozzle atomization effect strengthening device and nozzle
CN114642978A (en) * 2022-03-22 2022-06-21 浙江一龙环保科技有限公司 Suction type rotational flow microbubble generator

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CN201384946Y (en) * 2009-03-24 2010-01-20 山东东岳有机硅材料有限公司 Gas distributor for fluidized bed reactor
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704447A (en) * 2019-03-05 2019-05-03 苏州方舟环保科技有限公司 A kind of urban river water acid-base accommodation device
WO2020193845A1 (en) * 2019-03-22 2020-10-01 Hilla Consulting Oy A fluid suspension tube
CN109908712A (en) * 2019-04-24 2019-06-21 攀钢集团钛业有限责任公司 The air and liquid mixer absorbed for titanium tetrachloride
CN109908712B (en) * 2019-04-24 2024-04-02 攀钢集团钛业有限责任公司 Gas-liquid mixer for titanium tetrachloride absorption
CN110193429A (en) * 2019-05-23 2019-09-03 三门峡亚太科技有限公司 A kind of ultralow grade alumyte waste residue is without transmission bulk flotation device and floatation process
CN110479127A (en) * 2019-07-18 2019-11-22 中国矿业大学 A kind of micro-nano bubble generating device and the method for generating micro-nano bubble
CN112808476A (en) * 2019-11-15 2021-05-18 中国石油天然气集团有限公司 Nozzle atomization effect strengthening device and nozzle
CN110947525A (en) * 2019-12-16 2020-04-03 李宾 Nanobubble flotation column
CN111081609A (en) * 2019-12-26 2020-04-28 西安奕斯伟硅片技术有限公司 Cleaning and etching system
CN111663040A (en) * 2020-06-22 2020-09-15 中南大学 Method for enhancing oxygen oxidation iron removal in solution by using microbubble generator
CN114642978A (en) * 2022-03-22 2022-06-21 浙江一龙环保科技有限公司 Suction type rotational flow microbubble generator
CN114642978B (en) * 2022-03-22 2023-01-10 浙江一龙环保科技有限公司 Suction type rotational flow microbubble generator

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