CN105151797A - Synchronous mixing and continuous micro-feeding device for various materials - Google Patents
Synchronous mixing and continuous micro-feeding device for various materials Download PDFInfo
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- CN105151797A CN105151797A CN201510541954.8A CN201510541954A CN105151797A CN 105151797 A CN105151797 A CN 105151797A CN 201510541954 A CN201510541954 A CN 201510541954A CN 105151797 A CN105151797 A CN 105151797A
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Abstract
The invention discloses a synchronous mixing and continuous micro powder-feeding device for various materials. The synchronous mixing and continuous micro powder-feeding device comprises a plurality of branch powder feeding systems and a material mixing device, wherein each branch powder feeding system comprises a motor, a lead screw, a lifting platform, a vibrating motor, a vibrating arm, a material storage tube, a guide slide block and a gas chamber; each lead screw is connected with the output shaft of corresponding motor, and each lifting platform is in threaded fit with corresponding lead screw; each material storage tube is arranged on corresponding lifting platform; each gas chamber is arranged at the upper end of corresponding material storage tube; and the top center of each gas chamber is fixedly connected with a branch powder-feeding tube; the bottom of each branch powder-feeding tube is fixedly connected with corresponding guide slide block and extends into corresponding material storage tube; a gas inlet tube is arranged on each gas chamber; the top of the branch powder-feeding tube of each branch powder-feeding system is fixedly connected with the material mixing device; and the two ends of the material mixing device are connected with a gas supplementing tube and a primary powder feeding tube respectively. The synchronous mixing and continuous micro powder-feeding device can realize continuous, stable and automatic micro powder feeding at a low carried gas flow rate; and precise and quantitative mixing and powder-feeding of various materials can be realized by regulating the rotation speed of each motor.
Description
[technical field]
The present invention relates to the solid fuel ignition such as coal dust, living beings technical field and materials-handling technology field, relate to a kind of many materials synchronized mixes and continuous micro to powder device, this device can realize low carry gas velocity under a kind of continuous micro of or many kinds of solids material to powder.
[background technology]
Cold spray process prepares the granular material combustion experiment such as bio-medical coating and the coal dust carried out in Entrained flow reactor, coke, living beings, usually needs continuously, trace, stable to powder.Meanwhile, material carries gas velocity should, close to primary air speed in stove, to ensure that the feeding of material is less on temperature field in furnace, velocity field impact, therefore need the lower gas velocity that carries to flow to powder to realize carrying.Particularly crucial in the experimental study that this is short at material flow, length of the halt is little.
Spiral rod type powder feeding equipment sedimentation furnace experiment in be most widely used give powder device.The material of thread pitch is pushed to screw mandrel end by rotating by screw mandrel, by carrying pneumatic transmission to branch road to tube cell mouth, can realize the delivery rate [Xu Xiangqian, Thermal power engneering, 2008:23 (3)] being low to moderate 1g/min.But this feed-type carry the granular material such as living beings and brown coal time easily block, not easily blanking, stability and applicability poor; In material, add last the avoiding of silica white block, but the introducing of impurity can have an impact to combustion process and residues of combustion, may bring larger error.
Application number be 201110134050.5 Chinese patent application disclose a kind of fluidized continuous micro-feeding device, this device can provide the continuous micro feed being low to moderate 0.05g/min, but, carry gas speed and will reach 600ml/min, when leaving discharge nozzle, too high material speed will have influence on pipe temperature out field and velocity field, will bring certain error in the Entrained flow reactor experiment that length of the halt is short; Meanwhile, for ensureing that delivery rate is stablized, discharge nozzle position is constantly movement in feeding process, and moving velocity determines by delivery rate, and this will make troubles to practical application.
Carry out in laboratory pluralities of fuel mix combustion or additive fuel is affected research time, usually, after being mixed in feed bin with certain selected ratio by different material, traditional single material feed-type feed [Zhao Qingqing, Shanghai University of Science and Technology's journal is used, 2014,36 (6): 511-515].But this mode will cause actual feed ratio to be different from mixing of materials ratio in feed bin because of differences such as different material density, patterns, there is appreciable error.
In the research of laboratory powder carry, often need the lower gas speed and less of powder speed of carrying, ensure stability, continuity simultaneously, and avoid the introducing of additive, existing Powder Microfeeder can not meet the demands.
In laboratory many mixing of materials powder feeding research, often require that realize mixing of materials ratio stablizes the constant and micro-conveying of powder simultaneously, but directly the mixing in material bed of current extensive employing, the mode of conventional feed mix to powder speed is higher and blending ratio unstable, comparatively big error may be brought, can not meet the demands.
[summary of the invention]
The object of the present invention is to provide a kind of stable many materials synchronized mixes and continuous micro to powder device, can provide be low to moderate 0.01g/min to powder speed.
For achieving the above object, the technical solution used in the present invention is:
A kind of many materials synchronized mixes and continuous micro, to powder device, comprise some branch roads to powder system and Component Mixing System;
Branch road comprises motor, screw mandrel, lifting table, vibrating motor to powder system, raises one's arm, pad, storing pipe, flow guide sliding block, air chamber and branch road be to tube cell; Screw mandrel is connected with motor output shaft, and lifting table coordinates with wire rod thread; Lifting table is provided with pad, and pad is provided with storing pipe; First oscillatory system is connected with storing pipe lower end outer wall, and storing pipe upper end is air chamber; The top center of air chamber is fixedly connected with to tube cell with branch road; Branch road is to being fixedly connected with flow guide sliding block bottom tube cell and stretching in storing pipe; Air chamber is provided with air inlet pipe;
Component Mixing System comprises main to tube cell, material mixing device, blowdown pipe and the second oscillatory system; Each branch road is fixedly connected with material mixing device to tube cell top to the branch road of powder system, and the upper and lower two ends of material mixing device are connected to tube cell with blowdown pipe and master respectively, and the second oscillatory system is connected to tube cell with main.
Further, the shape of material mixing device is eggshell state, and its top center is fixedly connected with blowdown pipe, and branch road passes into material mixing device to tube cell from top; Be fixedly connected with to tube cell with main bottom material mixing device.
Further, air chamber and branch road are fixedly installed to tube cell.
Further, the first oscillatory system is identical with the structure of the second oscillatory system, includes interconnective vibrating motor and raises one's arm.
Further, air chamber comprises the upper cover and sealing bolt that cooperatively interact, is sealed and matched between upper cover and sealing bolt by O-ring seal.
Further, the diameter of the material mixing device of eggshell state is up big and down small.
Further, the material of raising one's arm is corrosion-resistant steel, and its outside face is fixedly connected with the fuselage of eccentric wheel vibrating motor, inside face and storing pipe or main to tube cell outer wall close contact.
Further, flow guide sliding block is cylinder, and its center is the through hole passed through to tube cell for branch road, if its periphery is provided with axially extended recess channels; Flow guide sliding block external diameter 1mm less of storing bore, recess channels bottom surface is wide is 1mm, and the side degree of depth is 0.5mm.
Further, carrying air-flow velocity, different branch to the rotating speed of the motor of powder system by controlling different branch to the material air inlet pipe of powder system, independently controlling each material to powder speed, thus control material mixing device outlet mixed material to powder ratio.
Relative to prior art, the present invention has following beneficial effect:
The present invention passes through at the movable storing pipe of air chamber lower disposed that is fixing, sealing, storing pipe under driven by motor with certain speed upward movement, vibrating motor can make material under vibration and airflow function in fluidisation state, thus be easy to be carried, carry gas and enter storing pipe from air inlet pipe and air chamber, carry material and enter branch road to tube cell.Branch road determines by carrying gas velocity to the distance bottom tube cell and between material, is determined by motor speed to powder speed, can realize low carry air-flow velocity under continuous, stable microdose heparin.After different materials enters mixing tube, under the vibration of vibrating motor, realize the Homogeneous phase mixing of different material.Keeping each material to carry air-flow velocity, reactor inlet mixed material ratio can be determined by controlling each material motor speed.
The present invention can realize microdose heparin, and minimum continous-stable reaches 10mg/min to powder speed; Carry gas velocity and can realize continous-stable to powder close to primary air speed, can realize carrying stream microdose heparin, affect less on main to the temperature field of tube cell outlet, velocity field, the Entrained flow reactor experiment short for length of the halt is significant; Mixed to powder by the accurate quantification regulating each material drive motor rotating speed can realize various materials.
[accompanying drawing explanation]
Fig. 1 is integral structure schematic diagram of the present invention;
Fig. 2 is flow guide sliding block structural representation;
Fig. 3 is vibrating motor and structural representation of raising one's arm;
Wherein: 1, motor; 2, screw mandrel; 3, lifting table; 4, pad; 5, vibrating motor; 6, raise one's arm; 7, storing pipe; 8, flow guide sliding block; 9, sealing bolt; 10, O-ring seal; 11, air chamber; 12, air inlet pipe; 13, main to tube cell; 14, material mixing device; 15, branch road is to tube cell; 16, blowdown pipe.
[detailed description of the invention]
Below in conjunction with accompanying drawing and example, the present invention is described in further detail:
Refer to shown in figure, a kind of many materials synchronized mixes and continuous micro, to powder device, comprise some branch roads to powder system and Component Mixing System.
Branch road comprises motor 1, screw mandrel 2, lifting table 3, vibrating motor 5 to powder system, raise one's arm 6, pad 4, storing pipe 7, flow guide sliding block 8, air chamber 11 and branch road be to tube cell 15.Screw mandrel 2 is connected with motor 1 output shaft, lifting table 3 and screw mandrel 2 screw thread fit; Lifting table 3 is provided with pad 4, and pad 4 is provided with storing pipe 7; Screw mandrel 2 rotates and makes lifting table 3 and storing pipe 7 upward movement, first oscillatory system is connected with storing pipe 7 lower end outer wall, storing pipe 7 upper end is air chamber 11, and air chamber 11 comprises the upper cover and sealing bolt 9 that cooperatively interact, is sealed and matched between upper cover and sealing bolt 9 by O-ring seal 10.The upper cover top center of air chamber 11 is fixedly connected with to tube cell 15 with branch road.
Component Mixing System comprises main to tube cell 13, material mixing device 14, blowdown pipe 16 and the second oscillatory system.
Each branch road is fixedly connected with material mixing device 14 to tube cell 15 top to the branch road of powder system, and material mixing device about 14 two ends are connected to tube cell 13 with blowdown pipe 16 and master respectively, and the second oscillatory system is connected to tube cell 13 with main.
Branch road is to being fixedly connected with flow guide sliding block 8 bottom tube cell 15 and stretching in storing pipe 7, and air inlet pipe 12 is arranged in the upper cover wall of air chamber 11.First oscillatory system is identical with the structure of the second oscillatory system, includes vibrating motor 5 and raises one's arm 6.
See Fig. 1 and Fig. 2, the material of flow guide sliding block 8 is polysulphide rubbers or 304 corrosion-resistant steels; Flow guide sliding block 8 is cylinder, and its center is the through hole passed through to tube cell 15 for branch road, if its periphery is provided with axially extended recess channels.Flow guide sliding block 8 external diameter 1mm less of storing pipe 7 internal diameter, recess channels bottom surface is wide is 1mm, and the side degree of depth is 0.5mm; It can make to carry air-flow and press close to tube wall and flow downward, and away from central branches to tube cell mouth, increases air-flow stroke and flow velocity, strengthens the disturbance to material, thus realize better carrying effect to material.
See Fig. 1, the material mixing device 14 of stainless steel is eggshell state, master can by vibration passing to material mixing device 14 to tube cell 13, central gas stream enters material mixing device 14 through blowdown pipe 16, the different powder entered to tube cell 15 from branch road mix with vibration combined action at central gas stream, enter main to tube cell 13.
Pad 4 uses high resiliency vulcanized rubber material, while playing carrying storing pipe 7 effect of increasing, can improve the vibration performance of storing pipe 7.
See Fig. 1 and Fig. 3, raise one's arm 6 inside faces and storing pipe 7 close contact, outside face is connected with vibrating motor 5, plays vibration passing to the effect of storing pipe 7.
Apparatus of the present invention carrying out practically mode is: make goods fluid in storing pipe 7 by vibrating and carrying gas combined action, under flow guide sliding block 8 acts on, carry gas and press close to wall flowing, storing pipe 7 upward movement is to keep material and branch road to tube cell 15 constant distance, carry gas to carry material and to leave to tube cell 15 from branch road and enter material mixing device 14, mix under the central gas stream combined action that blowdown pipe 16 enters, enter main to tube cell 13, vibrating motor 5 drives main vibration to tube cell 13 to make different material Homogeneous phase mixing and stable conveying.Laying sealant circle 10 bottom air chamber 11 and between sealing bolt 9, to ensure that storing pipe 7 upward movement can ensure good seal simultaneously.
Manufacture a coal according to above-mentioned principle and mix Powder Microfeeder with living beings, expection realizes the microdose heparin that blending ratio is 3:1.Motor 1 adopts step size to be the stepping motor of 1.8 degree, adopt 64 Multi-level microstep, screw mandrel 2 helical pitch is 4mm, and storing pipe 7 internal diameter is 10mm, and flow guide sliding block 8 external diameter is 9mm, periphery is evenly provided with 16 axially extended recess channels, diversion groove passage bottom is wide is 1mm, and the side degree of depth is 0.5mm, and spacer thickness is 2mm, branch road is 1mm to tube cell 15 internal diameter, external diameter 3mm.Storing pipe 7 splendid attire Changzhi, side meager coal, bulk density is 735kg/m
3, particle diameter is 63-100 μm, and service property (quality) flow counter controls to carry airshed 30mL/min, regulates Changzhi meager coal drive motor 1 rotating speed to be 10step/s; Side storing pipe 7 splendid attire die mould powdered biomass, bulk density is 354kg/m
3, particle diameter is 63-100 μm, and service property (quality) flow counter controls to carry airshed 30mL/min, regulates living beings drive motor 1 rotating speed to be 7step/s.As above arrange, every 5 minutes use balance mensuration storing pipes 7 and master export mixed-powder mass change to tube cell 13, and after measured, Changzhi meager coal transfer rate is 10.76mg/min, die mould living beings transfer rate is 3.53mg/min, and mixed-powder transfer rate is 14.21mg/min.Mixing feed ratio is about 3.05:1, can meet the demands.
Example 2: the mixing Powder Microfeeder according to same principle expansion instrument being three kinds of materials.Belongings material screen elect as 63-100 μm stand-by, each storing pipe 7 is splendid attire Changzhi meager coal powder, SiO respectively
2powder, Al
2o
3powder, bulk density is respectively 735kg/m
3, 1142kg/m
3, 1724kg/m
3, control that respectively to carry airshed be 20mL/min, drive motor 1 rotating speed is regulated to be 14step/s, 3step/s, 2step/s respectively, measure through balance, each mass transport speed is respectively 15.16mg/min, 5.05mg/min, 5.11mg/min, blending ratio is 59.87%, 19.94%, 20.18%, can meet expection requirement.
Claims (9)
1. the synchronized mixes of material more than and continuous micro, to a powder device, is characterized in that, comprise some branch roads to powder system and Component Mixing System;
Branch road comprises motor (1), screw mandrel (2), lifting table (3), pad (4), vibrating motor (5), raise one's arm (6), storing pipe (7), flow guide sliding block (8), air chamber (11) and branch road to tube cell (15) to powder system; Screw mandrel (2) is connected with motor (1) output shaft, lifting table (3) and screw mandrel (2) screw thread fit; Lifting table (3) is provided with pad (4), and pad (4) is provided with storing pipe (7); First oscillatory system is connected with storing pipe (7) lower end outer wall, and storing pipe (7) upper end is air chamber (11); The top center of air chamber (11) is fixedly connected with to tube cell (15) with branch road; Branch road is to being fixedly connected with flow guide sliding block (8) bottom tube cell (15) and stretching in storing pipe (7); Air chamber (11) is provided with air inlet pipe (12);
Component Mixing System comprises main to tube cell (13), material mixing device (14), blowdown pipe (16) and the second oscillatory system;
Each branch road is fixedly connected with material mixing device (14) to tube cell (15) top to the branch road of powder system, material mixing device (14) up and down two ends is connected to tube cell (13) with blowdown pipe (16) and master respectively, and the second oscillatory system is connected to tube cell (13) with main.
2. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, the shape of material mixing device (14) is eggshell state, its top center is fixedly connected with blowdown pipe (16), and branch road passes into material mixing device (14) to tube cell (15) from top; Material mixing device (14) bottom is fixedly connected with to tube cell (13) with main.
3. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, first oscillatory system is identical with the structure of the second oscillatory system, includes interconnective vibrating motor (5) and raise one's arm (6).
4. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, air chamber (11) comprises the upper cover and sealing bolt (9) that cooperatively interact, is sealed and matched between upper cover and sealing bolt (9) by O-ring seal (10).
5. one many materials synchronized mixes according to claim 2 and continuous micro are to powder device, it is characterized in that, air chamber (11) and branch road are fixedly installed to tube cell (15).
6. one many materials synchronized mixes according to claim 3 and continuous micro are to powder device, it is characterized in that, the material of (6) of raising one's arm is corrosion-resistant steel, its outside face is fixedly connected with the fuselage of eccentric wheel vibrating motor (5), inside face and storing pipe (7) or main to tube cell (13) outer wall close contact.
7. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, flow guide sliding block (8) is cylinder, and its center is the through hole passed through to tube cell (15) for branch road, and its periphery is provided with some axially extended recess channels; Flow guide sliding block (8) external diameter 1mm less of storing pipe (7) internal diameter, recess channels bottom surface is wide is 1mm, and the side degree of depth is 0.5mm.
8. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, air-flow velocity, different branch is carried to the rotating speed of the motor of powder system (1) to the material air inlet pipe (12) of powder system by controlling different branch, independently control each material to powder speed, thus control material mixing device (14) outlet mixed material to powder ratio.
9. one many materials synchronized mixes according to claim 1 and continuous micro are to powder device, it is characterized in that, carry air-flow and enter storing pipe (7) after air inlet pipe (12) and air chamber (11), carry material in storing pipe (7) and enter branch road to tube cell (15), different material mixing in material mixing device (14) after branch road is to tube cell (15), enters main to tube cell (13).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866188A (en) * | 2017-11-02 | 2018-04-03 | 西安交通大学 | A kind of pusher fuel combination micro feeding device |
| CN107879115A (en) * | 2017-11-10 | 2018-04-06 | 哈尔滨工业大学 | A kind of bubble type pressurization trace quantity gives powder device |
| CN109230541A (en) * | 2018-06-30 | 2019-01-18 | 太原理工大学 | A kind of miniature fluidized bed updraft type powder material drawing-in device and feeding method |
| CN109625975A (en) * | 2018-12-25 | 2019-04-16 | 西安交通大学 | A kind of submicron particles, which fluidize, gives powder device |
| CN111422620A (en) * | 2020-04-09 | 2020-07-17 | 佛山市高明曦逻科技有限公司 | Rotary hybrid carrying system and carrying method thereof |
| CN112748046A (en) * | 2020-12-29 | 2021-05-04 | 西安交通大学 | Device and method for measuring viscosity and density of fluid |
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| CN102134715A (en) * | 2010-01-27 | 2011-07-27 | 杭州中科新松光电有限公司 | Laser cladding multi-bin negative-pressure type powder feeder |
| CN102390720A (en) * | 2011-05-23 | 2012-03-28 | 华中科技大学 | Fluidized continuous micro-feeding device |
| CN203569188U (en) * | 2013-10-14 | 2014-04-30 | 苏州大学 | Synchronous powder conveying and automatic converting device for laser cladding graded material |
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| CA874283A (en) * | 1971-06-29 | K. Bullivant Walter | Pneumatic powder feeder and aerosolizer | |
| CN87103098A (en) * | 1986-04-23 | 1987-11-11 | 川崎制铁株式会社 | The back mixed method and the system that are used for the powder feed |
| CN102134715A (en) * | 2010-01-27 | 2011-07-27 | 杭州中科新松光电有限公司 | Laser cladding multi-bin negative-pressure type powder feeder |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866188A (en) * | 2017-11-02 | 2018-04-03 | 西安交通大学 | A kind of pusher fuel combination micro feeding device |
| CN107879115A (en) * | 2017-11-10 | 2018-04-06 | 哈尔滨工业大学 | A kind of bubble type pressurization trace quantity gives powder device |
| CN107879115B (en) * | 2017-11-10 | 2019-10-01 | 哈尔滨工业大学 | A kind of bubble type pressurization trace quantity gives powder device |
| CN109230541A (en) * | 2018-06-30 | 2019-01-18 | 太原理工大学 | A kind of miniature fluidized bed updraft type powder material drawing-in device and feeding method |
| CN109230541B (en) * | 2018-06-30 | 2021-05-18 | 太原理工大学 | Feeding device and feeding method for miniature fluidized bed updraught type powder material |
| CN109625975A (en) * | 2018-12-25 | 2019-04-16 | 西安交通大学 | A kind of submicron particles, which fluidize, gives powder device |
| CN111422620A (en) * | 2020-04-09 | 2020-07-17 | 佛山市高明曦逻科技有限公司 | Rotary hybrid carrying system and carrying method thereof |
| CN111422620B (en) * | 2020-04-09 | 2021-09-28 | 潍坊高滨智能科技有限公司 | Rotary hybrid carrying system and carrying method thereof |
| CN112748046A (en) * | 2020-12-29 | 2021-05-04 | 西安交通大学 | Device and method for measuring viscosity and density of fluid |
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