CN107866188A - A kind of pusher fuel combination micro feeding device - Google Patents
A kind of pusher fuel combination micro feeding device Download PDFInfo
- Publication number
- CN107866188A CN107866188A CN201711065638.3A CN201711065638A CN107866188A CN 107866188 A CN107866188 A CN 107866188A CN 201711065638 A CN201711065638 A CN 201711065638A CN 107866188 A CN107866188 A CN 107866188A
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- Prior art keywords
- mixing
- bin
- feeding
- push rod
- mixed fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000002156 mixing Methods 0.000 claims abstract description 75
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 10
- 238000005243 fluidization Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3204—Motor driven, i.e. by means of an electric or IC motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/501—Mixing combustion ingredients, e.g. gases, for burners or combustion chambers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a kind of pusher fuel combination micro feeding device, including drive device, feed bin, blending bunker and agitating device etc..During work, stepper motor drives leading screw rotation, promotes sliding block to move along a straight line, and then acting ram pushes the product into blending bunker, and when the timing of stepper motor rotating speed one, the amount that unit interval material enters blending bunker is definite value.Material tangentially enters blending bunker, form the rotation mixing of material, the agitator of motor driving simultaneously reversely rotates, strength imparting material disturbs, and mixed material enters powder feeding pipe under the Involving velocity of fluidized wind afterwards, exports charging gear, when the timing of fluidized wind flow velocity one, the distance between air distribution plate and material are definite value, and the inventory of now device output is to enter the inventory of blending bunker from feed bin, it is possible to achieve the accurate supply of mixed material.The present invention can realize micro continuous accurate feeding, while can realize the uniform mixing supply of various materials, and have the advantages of material ratio is adjusted in real time.
Description
Technical Field
The invention belongs to the technical field of pulverized coal, biomass and semicoke combustion, and particularly relates to a push type mixed fuel micro-feeding device which is used for realizing continuous and accurate supply of materials with different properties.
Background
In laboratory combustion experimental studies, quantitative, stable, accurate dosing is often required. At present, the accuracy of the common feeding device can meet the requirement under the condition of feeding more than 1g/min, but the accuracy and the stability are poor when the feeding is micro-fed (generally less than 1 g/min). Especially in laboratory research, the feeding amount less than 0.1g/min is often required to be met, and because the feeding amount is small, and the precision and the stability must be met, the common feeding device is difficult to realize.
The feeding devices commonly used in laboratories at present are screw rods, collapse type and fluidization type, among which the screw rods are most used. The screw rod type feeding device drives the screw rod to rotate through the motor, and the screw thread gap on the screw rod is utilized to push the materials to move, so that the device is convenient to operate and large in feeding amount, but for the materials with smaller particle size, the situations of arching and unstable blanking are easy to occur, and the accuracy of an experiment is influenced; chinese patent 200820221966.8 proposes a slump-type feeding device, which can effectively solve the problem of material arching, and uses the gravity of powder to feed powder, but the feeding amount is not easy to control, and the feeding error is large. The common fluidization formula feeder in laboratory at present can realize accurate feed, nevertheless is limited by its material storehouse volume little, can't realize long-time continuous feed, consequently can't satisfy the experimental requirement when carrying out long-time experiment continuous feed.
When carrying out the combustion experiment in the laboratory, often study the co-combustion characteristic in different fuels, consequently need carry out the supply of blending fuel in the combustion experiment often, but the laboratory mostly uses the feed mode of single material as leading at present, if will carry out the supply of blending material, need carry out the ratio in advance, adopt feeder to supply then, this kind of feed mode can't carry out the material ratio change in the experimentation again, cause the waste of material easily, make the experimental efficiency decline simultaneously.
Disclosure of Invention
Aiming at the problems, the invention provides a push type mixed fuel micro-feeding device which can effectively solve the problem that the volume of a common fluidized feeding device is small, can realize long-time accurate feeding, can realize the mixed feeding of materials with different proportions, and can adjust the material proportion in real time in the experimental process.
The invention is realized by adopting the following technical scheme:
a push type mixed fuel micro-feeding device comprises a material mixing system and at least two sets of feeding systems; wherein,
each set of feeding system comprises a horizontally placed bin with two open ends, and a push rod mechanism is arranged at a feeding port of the bin and used for pushing materials to a material mixing system;
the material mixing system includes the mixing bunker that the vertical direction set up, the discharge gate of feed bin communicates to in the mixing bunker in the feed system, the bottom of mixing bunker is provided with the agitating unit who stretches into to the mixing bunker, middle part in the mixing bunker is provided with the air distribution plate, be provided with the air intake between the circumference of this air distribution plate and the mixing bunker inner wall, the discharge gate has been seted up to the center department of air distribution plate, this discharge gate and the one end intercommunication that send the powder pipe, the other end that sends the powder pipe stretches out outside the mixing bunker top, and be provided with the sealing plug between mixing bunker top inner wall and the powder pipe, the intercommunication has a plurality of fluidization wind gaps on the mixing bunker lateral wall between sealing plug and the air.
The invention further improves the technical scheme that the push rod mechanism comprises a base, a rotating structure arranged on the base, a lead screw, a push rod, a sliding block and a plunger, wherein the plunger is arranged in the storage bin, the push rod is horizontally arranged, one end of the push rod is connected with the plunger, the other end of the push rod is movably connected with the sliding block, the lead screw is in threaded connection with the sliding block, and when the push rod mechanism works, the rotating structure drives the lead screw to rotate so as to drive the sliding block to do uniform linear motion, so that the plunger pushes powder in the storage bin to enter the mixing storage bin under the.
The invention is further improved in that the rotating structure comprises a stepping motor and a coupler, and the output end of the stepping motor is connected with the lead screw through the coupler.
The invention is further improved in that the push rod mechanism further comprises a bearing and a bearing seat which are arranged on the base and supported in the middle of the push rod.
The invention is further improved in that the feeding system further comprises a loosening air port communicated with the side wall of the storage bin.
The invention has the further improvement that the discharge port of the storage bin is communicated to the mixing storage bin through a connecting flange, and a ball valve is arranged on a pipeline which is communicated with the mixing storage bin and is communicated with the discharge port of the storage bin.
The invention has the further improvement that the connecting part of the storage bin and the mixing storage bin adopts a reducing structure, the inner diameter of the connecting part is gradually reduced, and the outer side of the reducing structure is communicated with a loose air port.
The invention is further improved in that the stirring device comprises a stirrer arranged in the mixing bin and a stirring motor arranged outside the mixing bin and used for driving the stirrer.
The invention has the further improvement that the rotating direction of the stirrer is opposite to the rotating direction of the materials in the mixing bin, so that the materials are fully mixed.
The invention is further improved in that the number of the fluidizing tuyeres is two, and the fluidizing tuyeres are symmetrically arranged at the outer side of the mixing bin.
The invention has the following beneficial effects:
the invention provides a push type mixed fuel micro-feeding device, which comprises a rotating mechanism, a screw rod, a sliding block, a driver and a controller, wherein the rotating mechanism is composed of a stepping motor and a coupler and drives the screw rod to rotate so as to drive the sliding block to do uniform linear motion; the storage bin and the mixing storage bin are connected by the connecting flange, so that the feeding device is convenient to disassemble, assemble and clean, the part of the storage bin connected with the flange is designed into a reducing structure, the volume of the storage bin is enlarged, meanwhile, the extrusion and abrasion among materials can be reduced, and the reducing part can be flexibly designed according to the actual demand of the storage bin in the design process; a stirrer driven by a stepping motor is arranged in the mixing bin and used for mixing powder; symmetrical fluidization wind gap has been arranged to mixing bunker top, and fluidization wind gets into from this, has arranged the grid plate below fluidization wind gap for the fluidization wind that gets into mixing bunker is as even as possible, and fluidization wind entrainment material back gets into and send the powder pipe, send the powder pipe to run through the sealing plug and is connected with the grid plate, send and seal through the sealing plug between powder pipe and the mixing bunker and handle.
Furthermore, two parallel feeding systems are preferably selected for mixed feeding of materials with different proportions, and the feeding proportion of the materials can be adjusted at any time in the operation process;
furthermore, the two bins are respectively connected with the mixing bin in a tangential direction, so that the materials are rotated and lifted, and the materials can be mixed in the process of being fed from the bins and entering the mixing bin;
furthermore, a diameter-changing mode is adopted before the storage bin is connected with the mixing storage bin, the diameter-changing part can be flexibly designed according to the actual experimental material requirements, and the diameter-changing part is provided with a loose air port so as to reduce the extrusion and abrasion of the material;
furthermore, the rotation direction of the stirrer is opposite to that of the materials, so that the disturbance among the materials can be enhanced, and the materials can be mixed sufficiently;
furthermore, the fluidized air ports are symmetrically arranged, so that a fluidized air flow field is more uniform;
therefore, the push type mixed fuel micro-feeding device provided by the invention can realize accurate material supply of single materials or multiple mixed materials, and has the following advantages compared with the existing feeding device:
1. the large material bin can realize long-time continuous feeding and meet the material supply requirement of a large laboratory table;
2. the material supply is controlled by adopting a stepping motor, and meanwhile, the material is sucked by combining fluidized air, so that the feeding of the powder carried by the air is realized, and the accurate supply of the material can be realized;
3. loosening the materials by using loosening wind at the reducing position of the storage bin, so that the materials can be prevented from being extruded and abraded;
4. a material bin is tangentially arranged in a mixing material bin to form rotary mixing of materials, and a stirrer rotates reversely to further enhance material disturbance so that the materials are uniformly mixed;
5. the material ratio can be adjusted in real time in the experiment process, and the experiment efficiency is improved;
6. the stepping motor is adopted, so that the rotating speed is stable, and meanwhile, the stable operation can be realized at a low speed, and the feeding accuracy is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a propellant mixed fuel micro-feeding device according to the present invention.
3 fig. 3 2 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3
Fig. 3 is a top view of the junction of the silo and the blend silo.
In the figure: 1-stepping motor, 2-coupler, 3-push rod, 4-slide block, 5-lead screw, 6-bearing and bearing seat, 7-base, 8-stock bin, 9-plunger, 10-loose air port, 11-ball valve, 12-stirrer, 13-fluidized air port, 14-powder feeding pipe, 15-sealing plug, 16-air distribution plate, 17-mixing stock bin and 18-connecting flange.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the push type mixed fuel micro-feeding device provided by the invention comprises a stepping motor 1, a coupling 2, a push rod 3, a slide block 4, a screw rod 5, a bearing and bearing seat 6, a base 7, a bin 8, a plunger 9, a loosening air port 10, a ball valve 11, a stirrer 12, a fluidizing air port 13, a powder feeding pipe 14, a sealing plug 15, an air distribution plate 16, a mixed bin 17 and a connecting flange 18.
The rotary structure, the lead screw 5, the push rod 3, the sliding block 4, the bearing and bearing block 6 and the plunger 9 are arranged on the base 7, and the bearing and bearing block 6 is used for being supported in the middle of the push rod 3; the stepping motor 1 and the coupling 2 form a rotating structure of the device, the stepping motor 1 rotates to drive the lead screw 5 to rotate, the driving slide block 4 does uniform linear motion, then the plunger 9 pushes materials to enter the mixing bin 17 under the action of the push rod 3, the bin 8 is connected with the mixing bin 17 through the connecting flange 18, the device is convenient to disassemble, assemble and clean, the ball valve 11 is arranged on a pipeline communicated with the mixing bin 17 at a discharge port of the bin 8, the part of the bin 8 connected with the flange is designed into a reducing structure, the volume of the bin 8 is enlarged, meanwhile, the reducing part is provided with the loosening air port 10, loosening air is introduced to reduce extrusion and abrasion among the materials, the materials enter the mixing bin 16 tangentially, the materials are formed into rotary mixing of the materials in the mixing bin 16, the stirrer 12 driven by the stepping motor is arranged in the mixing bin 16, the stirring motor is controlled to ensure that the rotating direction of the stirrer 12 is opposite to the, enhancing the disturbance among different materials, and further uniformly mixing the materials; the upper portion of the mixing bin 17 is provided with a fluidization air port 13, fluidized air enters the mixing bin through the fluidization air port 13, the fluidized air uniformly flows downwards along the side wall of the mixing bin 17 under the air distribution effect of the air distribution plate 16, mixed materials are sucked in and then enter the powder feeding pipe 14, the mixed materials are fed out of the feeding device, when the speed of the fluidized air is constant, the distance between the air distribution plate 16 and the mixed materials is not changed, and the materials conveyed by the feeding device in unit time, namely the amount of the materials pushed into the mixing bin 17 by the plunger 9, is realized so as to realize accurate feeding of the materials.
The specific working process (taking coal powder and semicoke as examples) is as follows:
before powder feeding, firstly, the connection of all parts is determined to be stable, the sealing parts are checked to be well sealed, and the parts are respectively connected into a storage bin for feeding calibration (the materials left in the storage bin after powder calibration can be recycled). After calibration is completed, the coal powder mixing device enters a feeding stage, a stepping motor is started, the motor is placed in a reverse rotation state, a plunger piston is withdrawn from a stock bin, the stepping motor is stopped, a certain amount of coal powder and semicoke are placed according to specific experimental requirements, the plunger piston is connected with the stock bin, the motor is started and adjusted to be in a forward rotation state, loosening air is introduced at the moment, extrusion and abrasion among the coal powder are reduced, the plunger piston is pushed until the coal powder and the semicoke reach an outlet of the stock bin, the stepping motor is stopped, the rotating speed of each stepping motor is adjusted according to a powder feeding proportion, three stepping motors are started simultaneously, the coal powder and the semicoke simultaneously enter a mixing stock bin, the coal powder and the semicoke are uniformly mixed under the action of a stirrer, fluidizing air is introduced, automatic feeding is started when the material level in the mixing; in the feeding process, the supply quantity of the coal powder or the semicoke can be changed by changing the rotating speed of the motor, so that the proportion of the coal powder and the semicoke in different proportions is realized. After feeding is finished, the stepping motor is respectively enabled to rotate reversely, the fluidizing air and the loosening air are turned off at the moment, the plunger is withdrawn, the flange between the stock bin and the mixing stock bin is dismounted, and stock bin cleaning and material recovery are carried out.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A propulsion type mixed fuel micro-feeding device is characterized by comprising a material mixing system and at least two sets of feeding systems; wherein,
each set of feeding system comprises a bin (8) which is horizontally arranged and is provided with openings at two ends, and a push rod mechanism is arranged at a feeding port of the bin (8) and is used for pushing materials to a material mixing system;
the material mixing system comprises a mixing bin (17) arranged in the vertical direction, a discharge hole of a bin (8) in the feeding system is communicated into the mixing bin (17), a stirring device extending into the mixing bin (17) is arranged at the bottom of the mixing bin (17), an air distribution plate (16) is arranged in the middle of the mixing bin (17), an air inlet is arranged between the circumferential direction of the air distribution plate (16) and the inner wall of the mixing bin (17), a discharge hole is arranged at the center of the air distribution plate (16), the discharge hole is communicated with one end of a powder feeding pipe (14), the other end of the powder feeding pipe (14) extends out of the top of the mixing bin (17), and a sealing plug (15) is arranged between the inner wall of the top of the mixing bin (17) and the powder feeding pipe (14), and a plurality of fluidized air ports (13) are communicated on the side wall of the mixing bin (17) between the sealing plug (15) and the air distribution plate (16).
2. The propelled mixed fuel micro-feeding device according to claim 1, wherein the push rod mechanism comprises a base (7) and a rotating structure arranged on the base (7), a lead screw (5), a push rod (3), a slider (4) and a plunger (9), wherein the plunger (9) is arranged in the storage bin (8), the push rod (3) is horizontally arranged, one end of the push rod is connected with the plunger (9), the other end of the push rod is movably connected with the slider (4), and the lead screw (5) is in threaded connection with the slider (4).
3. The propelling type mixed fuel micro-feeding device according to claim 2, wherein the rotating structure comprises a stepping motor (1) and a coupler (2), and the output end of the stepping motor (1) is connected with the screw rod (5) through the coupler (2).
4. A propellant-mixed fuel micro-feeder according to claim 2, characterized in that the push rod mechanism further comprises a bearing and a bearing seat (6) arranged on the base (7) and supported in the middle of the push rod (3).
5. A propellant co-fuel micro-feeder according to claim 1, characterized in that the feeding system further comprises a loosening tuyere (10) communicating with the side wall of the silo (8).
6. The propelled mixed fuel micro-feeding device as claimed in claim 1, wherein the discharge port of the storage bin (8) is connected to the mixed storage bin (17) through a connecting flange (18), and a ball valve (11) is arranged on a pipeline connecting the discharge port of the storage bin (8) to the mixed storage bin (17).
7. The propelled micro mixed fuel feeding device as claimed in claim 1, wherein a reducing structure is adopted at the connection of the storage bin (8) and the mixing storage bin (16), the inner diameter of the reducing structure is gradually reduced, and a loose air port (10) is communicated with the outer side of the reducing structure.
8. A propellant-mixed fuel micro-feeding device according to claim 1, wherein the stirring device comprises a stirrer (12) disposed in the mixing silo (17), and a stirring motor disposed outside the mixing silo (17) for driving the stirrer (12).
9. A propellant-mixed fuel micro-feeder according to claim 8, characterized in that the rotation direction of the stirrer (11) is opposite to the rotation direction of the materials in the mixing bin (17) to facilitate the thorough mixing of the materials.
10. A propellant-mixed fuel micro-feeder according to claim 1, characterized in that the number of fluidizing tuyeres (13) is two and the fluidizing tuyeres are symmetrically arranged outside the mixing silo (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065638.3A CN107866188A (en) | 2017-11-02 | 2017-11-02 | A kind of pusher fuel combination micro feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065638.3A CN107866188A (en) | 2017-11-02 | 2017-11-02 | A kind of pusher fuel combination micro feeding device |
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| Publication Number | Publication Date |
|---|---|
| CN107866188A true CN107866188A (en) | 2018-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711065638.3A Pending CN107866188A (en) | 2017-11-02 | 2017-11-02 | A kind of pusher fuel combination micro feeding device |
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| Country | Link |
|---|---|
| CN (1) | CN107866188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030706A (en) * | 2018-06-05 | 2018-12-18 | 北京理工大学 | A kind of combustion experimental device for preventing powder from reuniting in transit |
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| CN106512844A (en) * | 2016-11-25 | 2017-03-22 | 攀枝花市旭鼎机械制造有限公司 | Pulverized coal mixing stirrer |
| CN106743511A (en) * | 2016-12-15 | 2017-05-31 | 哈尔滨工业大学 | A kind of pusher micro-feeder |
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- 2017-11-02 CN CN201711065638.3A patent/CN107866188A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157241A (en) * | 1976-03-29 | 1979-06-05 | Avion Manufacturing Co. | Furnace heating assembly and method of making the same |
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| CN102285501A (en) * | 2011-05-23 | 2011-12-21 | 华中科技大学 | Tangential injection continuous micro-feeding device |
| CN102390720A (en) * | 2011-05-23 | 2012-03-28 | 华中科技大学 | Fluidized continuous micro-feeding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109030706A (en) * | 2018-06-05 | 2018-12-18 | 北京理工大学 | A kind of combustion experimental device for preventing powder from reuniting in transit |
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Application publication date: 20180403 |