CN109772594A - A kind of control system of strong shear pulse air bubble forming - Google Patents
A kind of control system of strong shear pulse air bubble forming Download PDFInfo
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- CN109772594A CN109772594A CN201910135634.0A CN201910135634A CN109772594A CN 109772594 A CN109772594 A CN 109772594A CN 201910135634 A CN201910135634 A CN 201910135634A CN 109772594 A CN109772594 A CN 109772594A
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- Prior art keywords
- airflow
- bubble
- control system
- servo motor
- strong shear
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- 238000005188 flotation Methods 0.000 claims abstract description 12
- 238000010008 shearing Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract 5
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005187 foaming Methods 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000003795 desorption Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009291 froth flotation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
本申请涉及一种强剪切脉冲气流的控制系统，包括气流转换装置、剪切装置、浮选装置和控制装置；通过设置气流转换装置，将稳态气流转换为脉冲式气流，将连续气流转换为脉冲气流的方式来强化气流冲击力，可以降低气泡脱附过程中对浮力的依赖，从而使气泡以较小的尺度提前脱附，此作用下所形成的气泡直径明显降低；在气流转换装置和剪切装置的共同作用下，气泡尺径可减小到0.1mm以下。
The present application relates to a control system for strong shear pulsed airflow, including an airflow conversion device, a shearing device, a flotation device and a control device; by setting the airflow conversion device, the steady-state airflow is converted into a pulsed airflow, and the continuous airflow is converted In order to strengthen the impact force of the airflow by means of pulsed airflow, it can reduce the dependence on buoyancy in the process of bubble desorption, so that the bubbles can be desorbed in advance at a smaller scale, and the diameter of the bubbles formed under this action is significantly reduced; in the airflow conversion device Under the combined action of the shearing device, the diameter of the bubble can be reduced to less than 0.1mm.
Description
Technical field
The present invention relates to flotation technology field, specifically a kind of Strong shear air pulse at bubble control system.
Background technique
Bubble plays an important role in the industries such as chemical industry, petrochemical industry, ore dressing, multiphase heat transfer, one of the most common application
Mainly there are mineral floating, wastewater treatment etc., bubble is identified as the most important condition of heat transfer and mass transfer.Froth flotation is often answered
For the recycling of mineral grain, the size of bubble is to influence a critically important parameter of the rate of recovery in floatation process.Bubble
Effective collision with mineral grain is a weight of the dynamic (dynamical) important indicator of bubble particles and the mineral grain rate of recovery
Want factor.The probability of bubble and particles collision can be described i.e. with the proportionate relationship of bubble diameter and particle diameter:
Wherein, what Dp was represented is the diameter of particle, and what Db was represented is the diameter of bubble.This equation can explain collision
Probability and particle bubble diameter ratio have much relations.When recycling subtle mineral grain, select within the scope of the same order of magnitude
Bubble can largely improve the rate of recovery, while save more dosings.
Common current flotation at bubble technology includes mechanical stirring, jet stream shearing, air pocket cavitation and dissolved air floatation.Mechanical stirring
Formula is larger at bubble flotation environment turbulence level, and average shearing speed is up to 100s-1 in correlative study report flotation device, and bubble is flat
Equal ruler diameter is larger (1.2-2.7mm)；Strong shear when jet stream shearing flows through jet pipe using solution high speed cuts air into bubble, gas
It is average in 0.5mm to steep ruler diameter；For air pocket cavitation using pressure drop of the solution high velocity stream after through enturi tube at bubble, average ruler diameter can
Up to 0.2mm hereinafter, but energy consumption it is higher；Then dissolved air floatation elder generation high pressure makes pressure drop analyse air in air pass into solution
Out at the technology of bubble, without strong disorderly generation, and it is smaller to generate bubble scale, but dissolved air floatation needs high-voltage operation, therefore cost
It is higher.
Summary of the invention
The present invention provides a kind of control system of Strong shear air pulse for generating microvesicle, skill in order to solve existing issue
Art scheme is as follows:
A kind of control system of Strong shear air pulse, including airflow convertor, shear, flotation unit and control
Device.
The airflow convertor includes air compressor, pressure-regulating valve, gas flowmeter, high-frequency electromagnetic valve, wherein
The air compressor, pressure-regulating valve, gas flowmeter, high-frequency electromagnetic valve and gas chamber are sequentially connected.
Shear includes servo motor, porous plate, and the servo motor and porous plate are drivingly connected.
The lower part of the flotation unit is provided with gas chamber, and the porous plate is located above the gas chamber.
Switch time in the frequency and a cycle that the control device passes through control high-frequency electromagnetic valve, steady-state gas flow is turned
It changes into as pulsed gas flow, meanwhile, the control device passes through the velocity of rotation of Serve Motor Control porous plate, and then at bubble
It impact force intensity on direction and is controlled at the shearing force of the vertical direction of bubble.
Further, gear assembly, the servo motor are provided between the servo motor and the porous plate
Output shaft connect with the gear assembly, the transmission shaft of the gear assembly is connected with porous plate.
Further, the gear assembly includes bevel gear one and bevel gear two, the bevel gear one and horizontal cloth
The servo motor set is connected, and the transmission shaft arranged in the bevel gear two and book is connected, the bevel gear one
It is meshed with the bevel gear two.
Further, the transmission shaft is connect with the flotation unit rotatory sealing.
The present invention has the advantages that as follows compared with prior art:
(1) by the parameter of setting airflow convertor, steady-state gas flow can be converted into pulsed gas flow, by continuous gas
The mode that circulation is changed to air pulse carrys out strengthening airflow impact force, can reduce the dependence in bubble desorption process to buoyancy, from
And bubble is desorbed in advance with lesser scale, compared with continuous flow, the diameter of formed bubble be substantially reduced (bubble it is straight
Diameter can control in 0.2mm or less).
(2) airflow convertor in the present invention is by air compressor, pressure-regulating valve, gas flowmeter, high-frequency electromagnetic
Valve controls switch time in the frequency and a cycle of high-frequency electromagnetic valve by control device, steady-state gas flow is converted into arteries and veins
Formula air-flow is rushed, structure is simple, and does not need very big air pressure and consume additional energy resource.
(3) present invention both strengthens into the intensity of impact force on bubble direction, also in hanging down at bubble by increasing shear
Histogram is to the effect for having had more a shearing force, and under the collective effect of airflow convertor and shear, bubble ruler diameter can
It is reduced to 0.1mm or less.
Detailed description of the invention
Attached drawing 1 is the control schematic diagram of Strong shear air pulse of the invention.
Attached drawing 2 is the top view of porous plate.
In attached drawing: 1- air compressor, 2- gas flowmeter, 3- pressure-regulating valve, 4- high-frequency electromagnetic valve, 5- connection member
Part, 6- gear assembly, 7- servo motor, 8- gas chamber, 9- porous plate, 10- control device.
Specific embodiment
Referring to attached drawing 1-2: a kind of Strong shear air pulse control system, including two following parts: (1) technique system
System, including airflow convertor, shear, flotation unit, the airflow convertor include air compressor 1, pressure tune
Save valve 2, gas flowmeter 3, high-frequency electromagnetic valve 4 etc., the shear includes servo motor 7, gear assembly 6, porous
Plate 9；(2) control system adjusts admission pressure by pressure-regulating valve 2, and air flow meter 3 adjusts the flow of air inlet, control dress
Set switch time, rotation speed of servo motor 7 etc. in the frequency and a cycle of 10 control high-frequency electromagnetic valves 4.
Steady-state gas flow is filtered and is compressed by air compressor 1, removes moisture and impurity in air.Filtering and pressure
Pressure of the gas Jing Guo pressure-regulating valve regulating gas after contracting then passes through gas flowmeter 3, on adjusting gas flow meter
Knob flows out gas with certain flow, at this time the steady-state gas flow of the mode constant flow of air-flow.The gas of certain flow is passed through
High-frequency electromagnetic valve 4, high-frequency electromagnetic valve are the switch that can quickly open and close air-flow, coupled control panel 10
Solenoid valve can be subjected to regular regulation according to switch time in certain frequency and a cycle, by solenoid valve member
Part, the generation type of air-flow is from regime shift at pulsed.Gas is passed through in gas chamber 8 by pulsed gas flow through connecting element 5,
Bubble, which can be formed, through the micropore on porous plate 9 enters liquid phase.Using pulsed gas flow by porous plate 9, the diameter of bubble can
To control in 0.2mm hereinafter, its formation mechenism are as follows:
Micropore is at the embodiment that bubble process is substantially that stress acts on, and bubble is before desorption by the common work of multi-acting force
With, including buoyancy, gas shock power, gas-liquid interface tension, hydrostatic pressure, fluid viscous power and the absorption of gas-solid interface liquid film
Power, wherein buoyancy, the gentle light-liquid interfacial tension of gas shock power belong to desorption power, and hydrostatic pressure, fluid viscous power and gas-solid circle
Face liquid film adsorption capacity belongs to anti-desorption power；The critical condition of desorption is that desorption power is greater than anti-desorption power, the bubble institute before desorption
By the state for being in dynamic equilibrium with joint efforts；Under continuous flow state, gas shock power is not strong, and bubble desorption depends on floating
Power；Under normal conditions, bubble needs to be long to ten times of ruler diameter or more could generate enough buoyancy realization desorptions when micropore ruler diameter,
Cause generation bubble ruler diameter often larger；The mode that continuous flow is converted to air pulse is carried out into strengthening airflow impact force, it can be with
The dependence in bubble desorption process to buoyancy is reduced, to make bubble be desorbed in advance with lesser scale, so that the diameter of bubble
It is smaller.
With continued reference to attached drawing 1, in order to further decrease the diameter of bubble, porous plate and servo motor is drivingly connected, watched
After taking the starting of motor 7, passes through gear assembly 6 and porous plate 9 is driven to rotate；While air pulse is passed through, starting shearing
Device both strengthens into the intensity of impact force on bubble direction, the effect of a shearing force has also been had more in the vertical direction at bubble,
Under the collective effect of airflow convertor and shear, bubble ruler diameter can be reduced to 0.1mm or less.
Above-mentioned specific embodiment is used to illustrate the present invention, rather than limits the invention, of the invention
In spirit and protective scope of the claims, to any modifications and changes that the present invention makes, the model that the present invention protects is both fallen within
It encloses.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135634.0A CN109772594B (en) | 2019-02-25 | 2019-02-25 | Control system for strong shearing pulse airflow bubbling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135634.0A CN109772594B (en) | 2019-02-25 | 2019-02-25 | Control system for strong shearing pulse airflow bubbling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109772594A true CN109772594A (en) | 2019-05-21 |
| CN109772594B CN109772594B (en) | 2021-10-12 |
Family
ID=66487544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910135634.0A Expired - Fee Related CN109772594B (en) | 2019-02-25 | 2019-02-25 | Control system for strong shearing pulse airflow bubbling |
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| Country | Link |
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| CN (1) | CN109772594B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939836A (en) * | 2019-04-28 | 2019-06-28 | 郑州大学 | A kind of pulse air flow control application system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2673724A (en) * | 1951-07-14 | 1954-03-30 | Galigher Company | Impeller for flotation machines |
| US4639313A (en) * | 1985-07-05 | 1987-01-27 | The Deister Concentrator Company | Floatation apparatus for concentration of minerals from high water content aqueous slurries |
| CN102989592A (en) * | 2012-12-13 | 2013-03-27 | 广西华锡集团股份有限公司 | Multi-air-stream pulse injection-type floatation machine |
| CN208050179U (en) * | 2018-03-06 | 2018-11-06 | 山东烟台鑫泰黄金矿业有限责任公司 | A kind of stirring-type flotation cell |
| CN108772203A (en) * | 2018-07-01 | 2018-11-09 | 张大伟 | A kind of tin ore mine factory ore dressing flotation device |
| CN108906341A (en) * | 2018-06-19 | 2018-11-30 | 安徽枫雅轩科技信息服务有限公司 | Flotation device is used in a kind of screening of concentrate |
-
2019
- 2019-02-25 CN CN201910135634.0A patent/CN109772594B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2673724A (en) * | 1951-07-14 | 1954-03-30 | Galigher Company | Impeller for flotation machines |
| US4639313A (en) * | 1985-07-05 | 1987-01-27 | The Deister Concentrator Company | Floatation apparatus for concentration of minerals from high water content aqueous slurries |
| CN102989592A (en) * | 2012-12-13 | 2013-03-27 | 广西华锡集团股份有限公司 | Multi-air-stream pulse injection-type floatation machine |
| CN208050179U (en) * | 2018-03-06 | 2018-11-06 | 山东烟台鑫泰黄金矿业有限责任公司 | A kind of stirring-type flotation cell |
| CN108906341A (en) * | 2018-06-19 | 2018-11-30 | 安徽枫雅轩科技信息服务有限公司 | Flotation device is used in a kind of screening of concentrate |
| CN108772203A (en) * | 2018-07-01 | 2018-11-09 | 张大伟 | A kind of tin ore mine factory ore dressing flotation device |
Non-Patent Citations (1)
| Title |
|---|
| 沈政昌等: "《浮选机理论与技术》", 31 October 2012, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939836A (en) * | 2019-04-28 | 2019-06-28 | 郑州大学 | A kind of pulse air flow control application system |
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| Publication number | Publication date |
|---|---|
| CN109772594B (en) | 2021-10-12 |
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