CN106743668A - Powder conveying device - Google Patents
Powder conveying device Download PDFInfo
- Publication number
- CN106743668A CN106743668A CN201510973202.9A CN201510973202A CN106743668A CN 106743668 A CN106743668 A CN 106743668A CN 201510973202 A CN201510973202 A CN 201510973202A CN 106743668 A CN106743668 A CN 106743668A
- Authority
- CN
- China
- Prior art keywords
- pneumatic transmission
- transfer device
- nozzle
- powder transfer
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims description 47
- 238000012546 transfer Methods 0.000 claims description 29
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses a powder conveying device, comprising: one end of the mixing pipe is connected with a venturi; a gas delivery nozzle disposed inside the mixing tube; a feed pipe connected to the mixing pipe and located above the gas delivery nozzle, wherein an angle is formed between the feed pipe and the mixing pipe, and the angle is selected from 0 degree to 90 degrees, but does not include 0 degree or 90 degrees.
Description
Technical field
The present invention is a kind of relevant powder transfer device, espespecially a kind of powder transfer device for conveying high-temperature powder.
Background technology
The carbon dioxide of calcium loop capture now subtracts carbon technique as one kind, and it utilizes CaO to adsorb the CO2 in flue gas come anti-
CaCO3 should be generated, the CO2 concentration in flue gas is thereby reduced.And CaCO3 may separate out CaO and CO2 after being calcined through calcining furnace, its
Middle CaO powders temperature is about at 650~750 DEG C.This CaO powder is generally needed via pneumatic conveyer (Pneumatic
Conveyer 25 meters of feeding warehouses high) are delivered to again, to carry out the circulate operation of carbon capture again, wherein, CaO powders are through pneumatic transporting
After sending, powder temperature still has to maintain more than 400 DEG C with profit operation in workflow.
However, being only capable of carrying out powder conveying at normal temperatures existing powder transfer device at present, it is impossible in response to high temperature powder more
Body.Additionally, the framework of existing powder transfer device is connected on three-way pipe for feed pipe, and pneumatic transmission spray is provided with its three-way pipe
Mouth, the pneumatic transmission nozzle gos deep into length about in the center of charging aperture, so that cannot form effective negative pressure at charging aperture
Sealing gland, and there is updraft to impact charging aperture again.Such as be intended to existing powder transfer device convey high-temperature powder, then be only capable of with
The mode for increasing powder operational ton is carried out, that is, increase the solid/gas ratio of operation.Feed-line crushing relative increase will so be made, made
Charging aperture is impacted into more updrafts, and the excessive scattered and putty of dust occurs.
It is class urgently to be resolved hurrily at present therefore how to provide a kind of powder transfer device with the conveying in response to high-temperature powder
One of topic.
The content of the invention
A purpose of the invention is to provide a kind of powder transfer device, charging aperture is maintained the gas of zero negative pressure or tiny structure
Envelope state, and reach effect of continuous and stabilization charging and conveying powder.
Powder transfer device of the invention includes：Mixing tube, its one end connects a Venturi tube；Pneumatic transmission nozzle, is arranged on this
Inside mixing tube, the aditus laryngis of the mouth end of the pneumatic transmission nozzle towards the Venturi tube；And feed pipe, it is connected on the mixing tube and position
In the top of the pneumatic transmission nozzle, wherein, an angle that 90 degree are less than more than 0 degree is formed between the feed pipe and the mixing tube.
The present invention is directed to prior art its effect, by airdoor control blast and air quantity, and by modulation nozzle
Flow rate units adjust the air-flow velocity of pneumatic transmission nozzle, and the modulation nozzle flow velocity list is further controlled by pressure controller
Unit, to maintain while the sealing gland function of the negative pressure of feed inlet end zero or tiny structure, i.e. modulation blast, air quantity and powder operational ton,
Can modulation nozzle flow velocity automatically, thereby control the terminal temperature of powder, and reach continuous and stabilization charging and conveying powder
Effect.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of powder transfer device of the invention；
Fig. 2A is the efficiency schematic diagram of the temperature with pneumatic transmission air quantity of powder transfer device of the invention；
Fig. 2 B are the efficiency schematic diagram of the temperature with conveying powder amount of powder transfer device of the invention.
Wherein, reference：
The mixing tube of 1 powder transfer device 10
The aditus laryngis of 11 Venturi tube 111
12 121 mouthfuls of pneumatic transmission nozzle ends
The modulation nozzle flow rate units of 13 feed pipe 14
The nut bearing of 141 sliding screw 142
The flexible bent axle of 143 chock plug 144
The air blower of 145 tumbler 15
The pressure controller of 16 air door 17
18th, the pneumatic transmission wind of 19 powder 20
X, Y, Z axis theta 1, the angles of θ 2
Specific embodiment
Hereinafter embodiments of the present invention, those skilled in the relevant technical field are illustrated by particular specific embodiment
Other advantages of the invention and effect can easily be understood by content disclosed in the present specification.
It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to coordinate specification to be taken off
The content shown, for understanding and the reading of those skilled in the relevant technical field, is not limited to the present invention enforceable
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
Do not influence under effect that can be generated of the invention and the purpose to be reached, all should still fall in disclosed technology contents
Obtain in the range of covering.
When high-temperature powder in general technology enters air-transport system, the high-temperature powder of fixed amount mixes with conveying air
Afterwards, its gas flow temperature will rise to a stable terminal temperature.To lift temperature again, in addition to downgrading air quantity, can also increase height
The conveying capacity of warm powder.In the case of air quantity is downgraded, volumetric expansion is caused because pipeline interior air-flow is conducted heat by powder,
Flow velocity will increase in pipeline, as long as therefore according to gas flow temperature change situation, you can maintain Geldart-D particle under the conditions of, tentative calculation
Go out to convey the nargin that downgrades of air quantity, solid/gas ratio relative can be lifted accordingly, and then lift the terminal temperature of powder.Increasing high again
The situation of warm powder conveying amount, in the case of not blocking pipeline, can directly lift the terminal temperature of powder.
But during air quantity or powder conveying amount is downgraded, it is necessary to overcome nozzle flows decrease and the increase of pipeline crushing
Variation, i.e., must design one can self-checking device, charging aperture is maintained the sealing gland state of zero negative pressure or tiny structure, such as
This system could continuously be fed and be conveyed, and powder operational ton and temperature is reached process requirements by adjusting means
Purpose.Powder transfer device of the invention is to reach person designed by above-mentioned purpose.
Fig. 1 is referred to, powder transfer device of the invention 1 mainly includes mixing tube 10, pneumatic transmission nozzle 12 and feed pipe 13,
And selectivity includes modulation nozzle flow rate units 14 again.
The one end of mixing tube 10 linking one has the venturi tube 11 of aditus laryngis 111, and the other end is then optionally connected an air blower
15, wherein, the air blower 15 is used to provide in pneumatic transmission wind 20 to the mixing tube 10.In one embodiment, the mixing tube 10 and should
Air door 16 is provided between air blower 15, is used to the blast and air quantity that control air blower 15 to send into pneumatic transmission wind in the mixing tube 10.
The pneumatic transmission nozzle 12 is located inside the mixing tube 10, and the pneumatic transmission nozzle 12 121, mouth end in the Venturi tube 11
Aditus laryngis 111 near, and towards the aditus laryngis 111.The pneumatic transmission nozzle 12 is a cone, and mouth end 121 refers to small section of the cone
Face end, and the effect of the pneumatic transmission nozzle 12 is to guide the pneumatic transmission wind 20 that air blower 15 provided to blow to aditus laryngis 111.It is real one
Apply in example, the mixing tube 10, the pneumatic transmission nozzle 12 and the Venturi tube 11 are serially connected on same axis Y, this axis Y and axis X
An angle, θ 1 is provided between (being exemplified as level).
The feed pipe 13 accesses the mixing tube 10 from top, specific position in the top of the pneumatic transmission nozzle 12 so that powder 18
Can vertically be fallen in gravity mode near the mouth end 121 of the pneumatic transmission nozzle 12 via the feed pipe 13 or entrance Venturi tube 11.
Wherein, the axis Z (being exemplified as vertical) of an angle, θ 2, i.e. feed pipe 13 is provided between the feed pipe 13 and the mixing tube 10 and is mixed
An angle, θ 2 is provided between the axis Y for closing pipe 10.In one embodiment, the angles of θ 2 can select a conjunction between 0 degree to 90 degree
Suitable person, not usually 0 degree or 90 degree, though being exemplified as 45 degree in Fig. 1, the present invention is not limited thereto.
Modulation nozzle flow rate units 14, are a selective apparatus, and citing is arranged within pneumatic transmission nozzle 12, is used to adjust drum
Air-flow velocity of the pneumatic transmission wind 20 that blower fan 15 is provided in pneumatic transmission nozzle 12.In one embodiment, modulation nozzle flow rate units
14 include sliding screw 141, at least a nut bearing 142, chock plug 143, flexible bent axle 144 and tumbler 145.
Sliding screw 141 has helicitic texture, and the helicitic texture is relative to be screwed together in nut bearing 142, and nut bearing 142 is then
It is fixed on the inwall of the pneumatic transmission nozzle 12, therefore, by way of rotating sliding screw 141 sliding screw 141 can be made relative
The shift reciprocately in pneumatic transmission nozzle 12 of nut bearing 142.
Chock plug 143 is arranged on one end of sliding screw 141, and position is near the mouth end 121 of the pneumatic transmission nozzle 12.It is real one
Apply in example, the chock plug 143 is ellipsoid or cone.When chock plug 143 with sliding screw 141 relative to pneumatic transmission nozzle 12 in front and rear
During the shift reciprocately of direction so that the air-out open area at the mouth end 121 of pneumatic transmission nozzle 12 with the shift reciprocately of chock plug 143
Change.It is, by chock plug 143 in the position at the mouth end 121 of pneumatic transmission nozzle 12, and then change the mouth end of pneumatic transmission nozzle 12
121 air-out open area, and the air-flow velocity of pneumatic transmission wind 20 that the air blower 15 provided in pneumatic transmission nozzle 12 can be adjusted
With flow.
One end connection sliding screw 141 of flexible bent axle 144, other end connection rotation dress in place outside mixing tube 10
145 are put, the tumbler 145 concretely rotation dish.The flexible bent axle 144 is rotated by tumbler 145 and interlock and slide
Screw rod 141 so that the shift reciprocately in pneumatic transmission nozzle 12 with respect to nut bearing 142 of sliding screw 141.
In one embodiment, powder transfer device 1 is typically to be configured as shown in Figure 1.In detail, the powder conveying
The axis Y of the Venturi tube 11 of device 1, is that may be selected to be equal or different to θ 2 with the angle, θ 1 of axis X sandwiched one, the angle, θ 1,
Though Fig. 1 is exemplified as 45 degree, the present invention is not limited thereto.
Powder transfer device of the invention 1 more optionally includes a pressure controller 17, and the pressure controller 17 is used to
The condition of negative pressure at the mouth end (i.e. feed pipe 13 is accessed in the part of mixing tube 10) of feed pipe 13 is monitored, and is come according to the condition of negative pressure
The air-flow velocity of modulation pneumatic transmission nozzle 12, that is, the controlling rotary device 145 of pressure controller 17.This pressure controller is set
17 purpose is to maintain the mouth end of the feed pipe 13 can the momentarily sealing gland function in zero negative pressure or tiny structure.
Further referring to Fig. 2A, in the case where fixed conveying powder amount is 1500kg/hr, the powder of the embodiment of the present invention
Body terminal temperature (temperature that i.e. powder enters before feeding warehouse) can still maintain about 400 DEG C, and with the reduction of pneumatic transmission air quantity,
Powder terminal temperature slightly rises.Fig. 2 B separately are referred to, in the case where fixed pneumatic transmission air quantity is 12.2CMM (stere),
With the increase (improving solid/gas ratio) of conveying powder amount, powder terminal temperature can still maintain about 400 DEG C.Thus can demonstrate,prove
Bright powder transfer device of the invention can reach essence really when reducing air quantity or increasing the change operating parameter of powder conveying amount
The good effect of quasi- control powder terminal temperature.
Powder transfer device of the invention by airdoor control blast and air quantity, and can be adjusted by modulation nozzle flow rate units
The air-flow velocity of whole pneumatic transmission nozzle, and the modulation nozzle flow rate units are further controlled by pressure controller, with maintain into
While the sealing gland function of the negative pressure of material mouth end zero or tiny structure, i.e. modulation blast, air quantity and powder operational ton, can modulation spray automatically
Mouth flow velocity, thereby controls the terminal temperature of powder, and reaches effect of continuous and stabilization charging and conveying powder.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the person skilled of this area can under without prejudice to spirit and scope of the invention, above-described embodiment is carried out modification with
Change.Therefore, there is this professional knowledge person such as, without departing from disclosed spirit and skill in art
All equivalent modifications completed under art principle or change, should be contained in the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of powder transfer device, it is characterised in that the device includes：
Mixing tube, its one end connects a Venturi tube；
Pneumatic transmission nozzle, is arranged on inside the mixing tube, the aditus laryngis of the mouth end of the pneumatic transmission nozzle towards the Venturi tube；And
Feed pipe, is connected on the mixing tube and position is in the top of the pneumatic transmission nozzle, wherein, between the feed pipe and the mixing tube
It is formed with an angle that 90 degree are less than more than 0 degree.
2. powder transfer device as claimed in claim 1, it is characterised in that the device further includes modulation nozzle flow rate units,
It is located in the pneumatic transmission nozzle, is used to adjust the air-flow velocity of the pneumatic transmission nozzle.
3. powder transfer device as claimed in claim 2, it is characterised in that the modulation nozzle flow rate units include sliding screw
And an at least nut bearing, the nut bearing is fixed on the inwall of the pneumatic transmission nozzle, and the sliding screw screws togather the nut axle
Hold, so that the sliding screw is relative to the nut bearing reciprocating displacement.
4. powder transfer device as claimed in claim 3, it is characterised in that the modulation nozzle flow rate units further include chock plug,
The chock plug is arranged on sliding screw position this mouthful of one end at end, and the chock plug is ellipsoid or cone.
5. powder transfer device as claimed in claim 3, it is characterised in that the modulation nozzle flow rate units further include flexible song
Axle and the tumbler of the flexible bent axle one end is connected to, the other end of the flexible bent axle connects the sliding screw, with by this
Tumbler rotates the sliding screw.
6. powder transfer device as claimed in claim 1, it is characterised in that the other end connection air blower of the mixing tube, should
Air blower is used to provide pneumatic transmission wind.
7. powder transfer device as claimed in claim 6, it is characterised in that be provided with wind between the mixing tube and the air blower
Door, to control the blast and air quantity of the pneumatic transmission wind.
8. powder transfer device as claimed in claim 1, it is characterised in that the angle is 45 degree.
9. powder transfer device as claimed in claim 1, it is characterised in that the mixing tube, the pneumatic transmission nozzle and the Venturi tube
It is to concatenate on the same axis.
10. powder transfer device as claimed in claim 1, it is characterised in that the device further includes a pressure controller, is used to
According to the condition of negative pressure modulation of the feed pipe pneumatic transmission nozzle, it is used to maintain the negative pressure of feed pipe zero or tiny structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104138709A TWI552941B (en) | 2015-11-23 | 2015-11-23 | Device for transportation of powder |
| TW104138709 | 2015-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106743668A true CN106743668A (en) | 2017-05-31 |
| CN106743668B CN106743668B (en) | 2018-11-30 |
Family
ID=57848194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510973202.9A Active CN106743668B (en) | 2015-11-23 | 2015-12-22 | Powder conveying device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106743668B (en) |
| TW (1) | TWI552941B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110833795A (en) * | 2019-11-29 | 2020-02-25 | 中南钻石有限公司 | Powder loading attachment |
| CN111874637A (en) * | 2020-07-10 | 2020-11-03 | 许昌学院 | Transmission protection mechanism is used in dangerous chemical processing of powder |
| CN112718299A (en) * | 2021-04-02 | 2021-04-30 | 成都天本地源科技有限公司 | Vertical intermittent dilute-phase powder material jet conveying device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI698387B (en) * | 2019-11-15 | 2020-07-11 | 財團法人工業技術研究院 | Powder and granule transport device |
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| CN2076553U (en) * | 1990-07-10 | 1991-05-08 | 鞍山钢铁公司 | Pulverized coal injection flow adjusting device |
| CN2403749Y (en) * | 2000-01-21 | 2000-11-01 | 无锡气动技术研究所 | Powder conveying intermediate lift pump |
| DE202004004976U1 (en) * | 2004-03-30 | 2004-06-03 | Coperion Waeschle Gmbh & Co. Kg | Control device for free cross-sectional surface of nozzle e.g. for supplying granular and powdery bulk materials, has leading straight edge fixed mechanically with nozzle core and with one flank inclined relative to axial direction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110833795A (en) * | 2019-11-29 | 2020-02-25 | 中南钻石有限公司 | Powder loading attachment |
| CN110833795B (en) * | 2019-11-29 | 2022-06-24 | 中南钻石有限公司 | Powder loading attachment |
| CN111874637A (en) * | 2020-07-10 | 2020-11-03 | 许昌学院 | Transmission protection mechanism is used in dangerous chemical processing of powder |
| CN112718299A (en) * | 2021-04-02 | 2021-04-30 | 成都天本地源科技有限公司 | Vertical intermittent dilute-phase powder material jet conveying device |
| CN112718299B (en) * | 2021-04-02 | 2021-07-09 | 成都天本地源科技有限公司 | Vertical intermittent dilute-phase powder material jet conveying device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201718378A (en) | 2017-06-01 |
| CN106743668B (en) | 2018-11-30 |
| TWI552941B (en) | 2016-10-11 |
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