CN106966173B - A kind of autoexcitation air particles conveying device - Google Patents

A kind of autoexcitation air particles conveying device Download PDF

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Publication number
CN106966173B
CN106966173B CN201710406461.2A CN201710406461A CN106966173B CN 106966173 B CN106966173 B CN 106966173B CN 201710406461 A CN201710406461 A CN 201710406461A CN 106966173 B CN106966173 B CN 106966173B
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China
Prior art keywords
flexible
flexible fins
air
length
delivery pipe
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CN201710406461.2A
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CN106966173A (en
Inventor
张丹
卢雅琳
周健
郑焱
朱圣清
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Jiangsu University of Technology
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Jiangsu University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/58Devices for accelerating or decelerating flow of the materials; Use of pressure generators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04Bulk
    • B65G2201/042Granular material

Abstract

The present invention provides a kind of autoexcitation air particles conveying device, including particle delivery pipe, the first air blower, the second air blower, flexible flow-disturbing component, separator and feeding tank, flexible flow-disturbing component is set to the discharge port in particle delivery pipe and close to feeding tank and is arranged, flexible flow-disturbing component includes fin bar and multiple flexible fins, flexible fins are uniformly arranged on fin bar along the length direction of fin bar, and the axial ends of fin bar is set in the axial cavity of particle delivery pipe.The present invention flows under the drive of air stream along particle delivery pipe after disturbance, does not need to consume additional energy;Flexible fins play the role of enhancing to vertical air velocity, so that particle is easier to suspend and accelerate, can reduce the pressure loss of system;The oscillation of air stream caused by flexible fins changes Particles Moving characteristic, advantageously forms the large scale particle flux of low frequency, can reduce air delivery speed and pipe wear.

Description

A kind of autoexcitation air particles conveying device
Technical field
The present invention relates to a kind of autoexcitation air particles conveying devices.
Background technique
Pneumatic conveying widely exists in the industrial circles such as the energy, chemical industry, food, pharmacy, according to different process requirements, Pneumatic conveying can be divided into Condensed transportation and diluted phase transport.During Condensed transportation, conveying stability is poor, is easy to produce The imagination of line clogging and vibration.Industry in practice, using it is more be diluted phase transport, it is higher during diluted phase transport Conveying speed lead to additional energy consumption, transfer efficiency is lower, further, since particle is carried by high-speed gas, particle it Between and the collision between particle and tube wall be easy to cause abrasion of conveying pipes seriously and conveying particle quality grade reduction the problem of. The key of high efficiency pneumatic transportation system design is the conveying for guaranteeing that conveying particle is capable of continuous-stable, on this basis as far as possible Reduction air delivery speed.
In order to reduce the energy consumption of air-transport system, applying disturbance to the air stream in pipeline is a kind of effective method, Typical way has generates spiral flow or bumpy flow in pipeline.Although these methods can reduce the pressure damage of transportation system Air delivery of becoming estranged speed, but the flow field disturbance generated needs additional energy to provide, energy-efficient effect is not obvious.
Summary of the invention
To solve the bad defect of energy-saving effect of the existing technology, it is defeated that the present invention provides a kind of autoexcitation air particles Send device.
In order to achieve the above object, technical scheme is as follows:
The present invention provides a kind of autoexcitation air particles conveying device, including particle delivery pipe, the first air blower, the second drum Blower, flexible flow-disturbing component, separator and feeding tank, particle delivery pipe are the cylindrical structure with axial cavity, the first air blast Machine and separator are separately connected the axial ends for being set to particle delivery pipe, and feeding tank is connected in particle delivery pipe and leans on Nearly first air blower setting, is equipped with circulation expects pipe between separator and feeding tank, the second air blower is connect with circulation expects pipe, flexible Flow-disturbing component is set to the discharge port in particle delivery pipe and close to feeding tank and is arranged, and flexible flow-disturbing component includes fin bar and more A flexible fins, flexible fins are uniformly arranged on fin bar along the length direction of fin bar, the axial ends setting of fin bar In in the axial cavity of particle delivery pipe.
Preferably, the length of particle internal diameter of delivery hose of the length of flexible fins not less than twice.
Preferably, the ratio between width of the spacing between two flexible fins of arbitrary neighborhood and flexible fins is 1:1.5-1:3.
Preferably, several compliant bumps are evenly distributed on the surface of flexible fins.
Preferably, several streamlined raised lines are evenly distributed on the surface of flexible fins along its length, it is streamlined convex The length direction of item be from a side of flexible fins length direction to the other side of its length direction be arranged and streamlined raised line with The line and flexible fins length direction of the tie point of flexible fins length direction two sides are in a certain angle.
Preferably, transition evagination globoidal structure or intermediate incline structure are equipped between streamlined raised line and flexible fins.
Preferably, flexible fins are that density is no more than 0.93g/cm3Material be prepared.
Preferably, particle conveyance conduit is straight tube structure or bend pipe structure.
The utility model has the advantages that (1) under action of high-speed airflow flexible fins to air stream generate disturbance, particle at feeding tank according to Enter conveyance conduit by gravity, is flowed under the drive of air stream along particle delivery pipe after disturbance, do not need consumption volume Outer energy;
(2) flexible fins play the role of enhancing to vertical air velocity, so that particle is easier to suspend and accelerate, it can The pressure loss of reduction system;
(3) oscillation of air stream caused by flexible fins changes Particles Moving characteristic, advantageously forms the large scale of low frequency Particle flux can reduce air delivery speed and pipe wear.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural schematic diagram of flexible flow-disturbing component of the invention.
Fig. 3 is the pressure loss signal under same particle transport condition whether there is or not installation flexible fins air-transport system Figure.
Fig. 4 is the particle concentration distribution map of system before and after installing flexible fins.
Fig. 5 is the spectrogram of the particle rapidity fluctuation of system before and after installing flexible fins.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, as shown in Figure 1 to Figure 2, provided in one of embodiment of the invention A kind of autoexcitation air particles conveying device, including particle delivery pipe 5, the first air blower 1, the second air blower 6, flexible flow-disturbing group Part, separator 7 and feeding tank 4, particle delivery pipe 5 are the cylindrical structure with axial cavity, the first air blower 1 and separator 7 It is separately connected the axial ends for being set to particle delivery pipe 5, feeding tank 4 is connected in particle delivery pipe 5 and close to first Air blower 1 is arranged, and circulation expects pipe is equipped between separator 7 and feeding tank 4, and the second air blower 6 is connect with circulation expects pipe, and flexibility is disturbed Stream component is set to the discharge port in particle delivery pipe 5 and close to feeding tank 4 and is arranged, and flexible flow-disturbing component includes 2 He of fin bar Four flexible fins 3, flexible fins 3 are uniformly arranged on fin bar 2 along the length direction of fin bar 2, and axial the two of fin bar 2 End is set in the axial cavity of particle delivery pipe 1.
Present embodiment has the advantages that (1) flexible fins under action of high-speed airflow disturb air stream generation Dynamic, particle enters conveyance conduit by gravity at feeding tank, conveys under the drive of air stream along particle after disturbance Pipe flowing, does not need to consume additional energy;
(2) flexible fins play the role of enhancing to vertical air velocity, so that particle is easier to suspend and accelerate, it can The pressure loss of reduction system;
(3) oscillation of air stream caused by flexible fins changes Particles Moving characteristic, advantageously forms the large scale of low frequency Particle flux can reduce air delivery speed and pipe wear.
As shown in Figures 3 to 5, in order to more clearly illustrate the beneficial effect of present embodiment, below to this embodiment party The technical solution of formula has done the Experimental Comparison of several aspects, specific as follows:
As can be seen from Figure 3 then the pressure loss increases as the increase of conveying speed first reduces, in conveying speed When 13.5m/s, the system pressure loss for installing flexible fins is lower than the system for not installing flexible fins, and minimum pressure loses Corresponding air delivery speed is also smaller, and this demonstrate the systems of installation flexible fins can be using smaller conveying speed come real Existing particle conveying, while the system has the smaller pressure loss.
As can be seen from Figure 4 it reduces in particle concentration with the increase of duct height, is installed near duct bottom The system particle concentration of flexible fins will be lower than the system of not installing flexible fins, and flexible fins are installed on and top in the duct System particle concentration be higher than the system for not installing flexible fins.This shows that flexible fins make particle be easier to suspend and add Speed can effectively reduce the pressure loss of system under same transport condition.
As can be seen from Figure 5 the particle fluctuation centre frequency after installing fin will be lower than the system for not installing fin, this Show to be capable of forming the bigger low frequency large scale particle flux of cymomotive force under the disturbance of flexible fins, is guaranteeing conveying stabilization Under the premise of, it can reduce air delivery speed, reduce the energy consumption of system, reduce the abrasion of conveyance conduit.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, the length of particle delivery pipe 5 diameter of the length not less than twice of flexible fins 3 guarantees that flexible fins are smooth It swings, it can be achieved that preferable disturbance effect.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, the ratio between width of spacing and flexible fins between two flexible fins of arbitrary neighborhood is 1:1.5-1:3, is avoided Interference is generated between adjacent two flexible fins, realizes preferable disturbance effect.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, it is evenly distributed with several compliant bumps on the surface of flexible fins, further increases the disturbance effect of flexible fins Fruit.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior Several streamlined raised lines are evenly distributed on the basis of appearance, on the surface of flexible fins along its length, streamlined raised line Length direction is to be arranged from a side of flexible fins length direction to the other side of its length direction and streamlined raised line and flexible The line and flexible fins length direction of the tie point of finned length direction two sides are in a certain angle, increase streamlined raised line, right Air velocity plays the role of enhancing, so that particle is easier to suspend and accelerate.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, it is equipped with transition evagination globoidal structure or intermediate incline structure between streamlined raised line and flexible fins, can avoid Particle is stuck in flexible fins.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, flexible fins are that density is no more than 0.93g/cm3Material be prepared, density is smaller, so that flexible wing Piece can deform under extraneous small effect.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior On the basis of appearance, particle conveyance conduit is straight tube structure or bend pipe structure, is suitable for different structure, more extensively.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention Protection scope.

Claims (7)

1. a kind of autoexcitation air particles conveying device, which is characterized in that including particle delivery pipe, the first air blower, the second drum Blower, flexible flow-disturbing component, separator and feeding tank, particle delivery pipe are the cylindrical structure with axial cavity, the first air blast Machine and separator are separately connected the axial ends for being set to particle delivery pipe, and feeding tank is connected in particle delivery pipe and leans on Nearly first air blower setting, is equipped with circulation expects pipe between separator and feeding tank, the second air blower is connect with circulation expects pipe, flexible Flow-disturbing component is set to the discharge port in particle delivery pipe and close to feeding tank and is arranged, and flexible flow-disturbing component includes fin bar and more A flexible fins, flexible fins are uniformly arranged on fin bar along the length direction of fin bar, the axial ends setting of fin bar In in the axial cavity of particle delivery pipe;It is evenly distributed with along its length on the surface of flexible fins several streamlined convex Item, the length direction of streamlined raised line are to be arranged and flow from a side of flexible fins length direction to the other side of its length direction Line style raised line and the line and flexible fins length direction of the tie point of flexible fins length direction two sides are in a certain angle.
2. autoexcitation air particles conveying device according to claim 1, which is characterized in that the length of flexible fins is not low In the length of twice of particle internal diameter of delivery hose.
3. autoexcitation air particles conveying device according to claim 1, which is characterized in that arbitrary neighborhood two flexible wings The ratio between width of spacing and flexible fins between piece is 1:1.5-1:3.
4. autoexcitation air particles conveying device according to claim 1, which is characterized in that on the surface of flexible fins It is even that several compliant bumps are distributed with.
5. autoexcitation air particles conveying device according to claim 1, which is characterized in that streamlined raised line and flexible wing Transition evagination globoidal structure or intermediate incline structure are equipped between piece.
6. autoexcitation air particles conveying device according to claim 1, which is characterized in that flexible fins are that density does not surpass Cross 0.93g/cm3Material be prepared.
7. autoexcitation air particles conveying device according to claim 1, which is characterized in that particle delivery pipe is straight tube knot Structure or bend pipe structure.
CN201710406461.2A 2017-06-02 2017-06-02 A kind of autoexcitation air particles conveying device Active CN106966173B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108910539A (en) * 2018-07-02 2018-11-30 江苏理工学院 A kind of energy-saving pneumatic conveying system with energy recovery function
CN109354188B (en) * 2018-11-27 2021-03-19 浙江工业大学上虞研究院有限公司 Device and method for treating sewage by synchronous nitrification and denitrification biomembrane method

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US6074136A (en) * 1998-01-27 2000-06-13 Dynamic Air Inc. Multi-port pneumatic switch
US6361253B1 (en) * 1999-03-19 2002-03-26 Durr Environmental, Inc. Method of forming a fire break in a duct
CA2543108A1 (en) * 2006-04-13 2007-10-13 The University Of Newcastle Research Associates Limited Dust reduction in delivery of particulate commodities
CN102000472B (en) * 2010-10-08 2013-03-20 北京大学 Device and method for accelerating particulate matter to interact with each other
CN104888573A (en) * 2015-05-27 2015-09-09 潘祖明 Device and method for promoting aggregation and growth of fine particulate matters
CN205328233U (en) * 2016-01-04 2016-06-22 文登蓝岛建筑工程有限公司 Low amount of wind granule material pneumatic conveyor system that forces down
CN105749690A (en) * 2016-04-28 2016-07-13 河北工业大学 Device and method for promoting interaction of fine particles in smoke of coal-fired boiler
CN106526223A (en) * 2016-10-19 2017-03-22 江苏理工学院 Synchronous measuring apparatus and method for gas-phase velocity field and solid-phase velocity field

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6074136A (en) * 1998-01-27 2000-06-13 Dynamic Air Inc. Multi-port pneumatic switch
US6361253B1 (en) * 1999-03-19 2002-03-26 Durr Environmental, Inc. Method of forming a fire break in a duct
CA2543108A1 (en) * 2006-04-13 2007-10-13 The University Of Newcastle Research Associates Limited Dust reduction in delivery of particulate commodities
CN102000472B (en) * 2010-10-08 2013-03-20 北京大学 Device and method for accelerating particulate matter to interact with each other
CN104888573A (en) * 2015-05-27 2015-09-09 潘祖明 Device and method for promoting aggregation and growth of fine particulate matters
CN205328233U (en) * 2016-01-04 2016-06-22 文登蓝岛建筑工程有限公司 Low amount of wind granule material pneumatic conveyor system that forces down
CN105749690A (en) * 2016-04-28 2016-07-13 河北工业大学 Device and method for promoting interaction of fine particles in smoke of coal-fired boiler
CN106526223A (en) * 2016-10-19 2017-03-22 江苏理工学院 Synchronous measuring apparatus and method for gas-phase velocity field and solid-phase velocity field

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