CN1197751C - Solid particle pneumatic transfer and blending device - Google Patents
Solid particle pneumatic transfer and blending device Download PDFInfo
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- CN1197751C CN1197751C CN 03150704 CN03150704A CN1197751C CN 1197751 C CN1197751 C CN 1197751C CN 03150704 CN03150704 CN 03150704 CN 03150704 A CN03150704 A CN 03150704A CN 1197751 C CN1197751 C CN 1197751C
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Abstract
The present invention relates to a pneumatic conveying and blending device for solid powder particles. A rotary valve with high pressure difference is used for continuously feeding. Accelerated material and high-speed gas form material-gas streams in an injector, and the material is separated from the gas by separating equipment after the material-gas streams arrive at a specified position through a conveying pipeline; the material is blended one time through a blending bunker with a wall sticking structure. The device of the present invention has larger conveying capacity and further conveying distance, the furthest distance can reach 1500m, the highest conveying height can reach 50m, the separating efficiency can reach 99.99%, and the smallest separating particle diameter can reach 0.5 mum.
Description
Technical field
The strength that the present invention relates to a kind of solid powder/particle body is carried and the blending device.
Background technology
The strength of solid powder/particle body is carried and be meant that the gas that adopts certain flow rate flows in pipeline, and the gas in flowing will promote the mobile of solid powder/particle body in the pipeline, use the conveying of finishing the solid powder/particle body.
In all conglomeraties such as oil, chemical industry, medicine, grain, food, electric power, building materials, metallurgy, mine, storage, all there is the powder material to need to carry.In the course of conveying of powder material, exist material to the mutual pollution problem of environment and environment to material.Be to have many materials to be corrosive on the one hand, penetrating odor is arranged, human body is had very big harmfulness, environment is had pollution; On the other hand, if material is when open type is carried, oxidized, moisture absorption, pollution and loss etc., and promptly environment is to the pollution problem of material.Therefore, the mode of movement of reasonable powder material is to adopt the pipeline of hermetic type to carry, and it mainly is that strength is carried that pipeline is carried.This mode of movement has been compared many advantages with other belt conveying, mechanical transport etc.:
(1) material is carried in closed pipeline, can not leak, and environment is difficult for producing pollutes, and can protect environment well;
(2) closed pipeline can effectively prevent pollution or the influence of surrounding environment to convey materials, guarantees the quality of convey materials;
(3) but the delivery conduit flexible arrangement, floor area is few;
(4) mechanical transmission component is few, and simple in structure, construction and maintenance cost are low;
(5) fed distance is long, and operational throughput is big.
Because the plurality of advantages that strength is carried, the conveying of the solid powder/particle body of present many industries all wishes to adopt this mode.But because the industry that the processing of powder body material relates to is very wide, the character of material varies, technological process is varied, field condition has nothing in common with each other, the actual fed process is a kind of process quite complicated and changeable, relates to appreciiable field again in addition, comprises fluid mechanics, powder technology, automatic control technology etc., this field is in developing period at present, does not set up the complete and ripe engineering theory of a cover as yet.
The pipeline strength is carried substantially can be divided into two classes: promptly send conveying of pot type strength and the conveying of rotary valve type tradition strength, but have the following disadvantages:
Sending pot type pipeline strength carries: control system is complicated, apparatus structure is complicated, the laid down cost height; Movable parts causes the system failure rate height more during operation, the maintenance cost height; Though it is long that its fed distance is carried than other pipeline strength, generally is no more than 300 meters, traffic capacity is not very high usually because it can not be carried continuously simultaneously.
Rotary valve type conventional pipelines strength is carried: although with send the pot type strength and carry the back system building and the maintenance cost of ratio control system and apparatus structure and uncomplicated its conveying mutually higher.Fed distance is short, operational throughput is less.
Formerly in the technology, Chinese patent ZL99231938, a kind of powdery or granular material fluidization Pneumatic conveying pipeline (authorization notification number: 2378358) is provided, crooked deflecting plate is installed on the upper tube wall in delivery duct, make conveying powdered or during granular material, be not easy in pipeline, to deposit, thus the difficult phenomenon that plugging takes place;
Author China Luoyang Polytechnical College pass light is gloomy to provide a kind of novel suction to send the formula strength to carry experimental installation (referring to " design of sulphur phosphorus and powder technology ", 2002, (1): 34-37), in the loader of this experimental installation, introduce pressurized air through nozzle, improved the degree of vacuum of loader, make material sufficient more, enter loader equably.Thereby improved strength and carried the solid and gas mixture ratio;
Author China Qiao Bin provide a kind of pulse phase pneumatic conveying system, the author is according to the interrelation of operational throughput, mixture ratio, conveying air velocity, air quantity, inner diameter of delivery tube, calculate and extrapolate the loss of pressure of total system and the required power of blower fan etc., the size of this delivery system is provided in view of the above.
Above-mentioned these three kinds of apparatus systems, though its characteristics are respectively arranged, equal some shortcomings, such as, in the acceleration of gas feed, and the aspects such as blending of material await to improve.Therefore, delivery pressure is lower, has only 0.08Mpa usually, and corresponding traffic capacity is lower, and fed distance is the longest also has only hundreds of rice far away.Delivery head, blending effect, separation efficiency and particle separation diameter are all undesirable.
Summary of the invention
The present invention provides a kind of solid powder/particle body strength to carry and the blending device in order to overcome the deficiency in the above-mentioned technology formerly.Apparatus of the present invention are according to the theory and the empirical data of rational gas-solid biphase flow, and the rotovalve continuous charging of employing High Pressure Difference adopts the high eductor increasing operational throughput of quickening, and employing has the mixing silo of adherent structure etc.Therefore, will make conveying of the present invention and blending device have higher traffic capacity, farther fed distance, higher delivery head, blending effect and separation efficiency etc. are all better.
The concrete technical scheme that conveying of the present invention and blending device are taked is: material that at first will be to be carried is flowed into by feed bin 4 in the rotovalve 3 of High Pressure Difference, by the rotation of rotovalve 3 material constantly is added in the eductor 2.Simultaneously compressor 1 gas that will have certain flow rate and pressure is blown in the eductor 2, in eductor 2 material is moved at the gas of this certain flow rate, form gas-solid biphase flow along mass transport pipeline 6 with mass transport to appointed positions.When being delivered to assigned address, pass through separation equipment then, gas is separated with material, the gas of separating returns compressor 1 by gas delivery pipeline 5, after the material of separating enters mixing silo 9 blending with adherent structure, or store, or enter packing stage by finished product pipeline 10.All processes is by the control system automatic guidance.
The remarkable result of conveying of the present invention and blending device is:
1, because the materials in the feed bin 4 is to enter into eductor 2 through rotovalve 3, so can guarantee between the feed bin 4 at material place and the diffuser certain pressure reduction is arranged.The pressure reduction of the rotovalve 3 among the present invention can reach 0.35Mpa, thereby the assurance package unit can under high pressure be carried.
2, owing in eductor 2, be the high-speed gas of coming through compressor 1 on the one hand, be the material that gets off through rotovalve 3 on the other hand, both here meet, and form gas-solid biphase flow, enter diffuser.Therefore have bigger traffic capacity,, and can realize fed distance far away, can reach 1500M farthest, higher height is arranged, reach as high as 50M up to 80T/h.
3, because gas and be separating of material the separation equipment that adopts cyclone and bag filter, so separation efficiency can reach 99.99%, the minimum separation particle diameter can reach 0.5 μ m.
4, owing to be adherent structure in mixing silo 9.Therefore, improved the blending effect.The qualification rate of product brings up to 99.8% by 97% of technology formerly.Can reduce effectively and build and maintenance cost, thereby bring huge economic benefit.
5, the overall process of the strength of conveying of the present invention and blending device conveying all is to carry out under the control system automatic guidance, and control system can be controlled time of delivery, traffic capacity, delivery conduit, equipment interlocking and accident condition etc. effectively.Guarantee safe, reliable, the operation of long period ground of delivery system.
Description of drawings
Fig. 1 is the structural representation of conveying of the present invention and blending device.
Fig. 2 is an A-A face cross-sectional schematic among Fig. 1.
The specific embodiment
Further specify the structure of conveying of the present invention and blending device below in conjunction with accompanying drawing.
Shown among Fig. 1 is the structure of conveying of the present invention and blending device.Main structure is: compressor 1 is communicated to eductor 2 through subcooler 101; Feed bin 4 also is communicated to eductor 2 by rotovalve 3.The outlet of eductor 2 is communicated to mass transport pipeline 6, and mass transport pipeline 6 is communicated in the separation equipment 7.The material outlet of separation equipment 7 is communicated to the mixing silo 9 that has weighing and burden device 8.The gas vent of separation equipment 7 is communicated in the compressor 1 by gas delivery pipeline 5.The outlet of mixing silo 9 is connected into product pipeline 10.
The inside of said mixing silo 9 has adherent blending pipe structure, and the bottom is a cone.The cone of bottom is equivalent to a funnel, makes that the flow velocity at feed bin center is littler to the velocity flow profile gradient at bin wall place, more helps the homogeneity of blending.
The pressure reduction that said rotovalve 3 can bear is up to 0.35MPa.
Said separation equipment 7 can be the combination of cyclone 701 and bag filter 702, perhaps is cyclone 701, perhaps is bag filter 702.
The shown separation equipment 7 of Fig. 1 is combinations of cyclone 701 and bag filter 702.
The control system of said conveying of the present invention and blending device (not showing among Fig. 1) is decentralized complex control system (DCS), or Programmable Logic Controller (PLC).
The concrete structure of the mixing silo 9 that Fig. 2 is in apparatus of the present invention to be adopted.
The cutaway view of mixing silo 9A-A face is found out from Fig. 1, on the inwall of said mixing silo 9 with adherent structure adherent blending pipe 902 is set evenly, and different positions has charging hole on adherent blending pipe 902.The bottom of the adherent blending pipe 902 just bottom of mixing silo 9 is blending chamber 901.Material flows in the mixing silo 9 from the material outlet on the disengagement gear 7, at first enter adherent blending pipe 902 by the charging hole of adherent blending pipe 902 after, flow to the blending chamber 901 of mixing silo 9 bottoms again, disposablely finish blending.
In order to make the material blending more even, need obtain the materials of the different height bed of materials, this is seated on the differing heights in the mixing silo 9 with regard to the charging hole that requires adherent blending pipe 902.As 001,002,003 the length of adherent blending pipe on cone among Fig. 2 is unequal.They have guaranteed that the material of bottom enters blending chamber 901.
The quantity of said adherent blending pipe 902 is decided on the size of mixing silo 9.If the diameter of mixing silo 9 is bigger, the quantity of then adherent blending pipe 902 is just many.The quantity of certain adherent blend composition pipe 902 is more, and the homogeneity of blending material is better.When needing higher blending effect and higher blending ability, can increase the quantity of adherent blending pipe if any special occasions.Because blending pipe of every increase just can increase by 3 homogenizing points, the increase of homogenizing point can make to get expects that point is more extensive in spatial distributions, gets material and has more representativeness, and natural blending effect is also better.Certainly, the quantity of adherent blending pipe 902 increases the problem that the complexity that also can bring processing and cost improve too much.
Conveying of the invention described above and blending device show in the following Table 1 with the result of technology contrast formerly.
Table 1: apparatus of the present invention and technology comparing result formerly
| Sequence number | Carry type | Traffic capacity T/h | Delivery pressure MPa | Fed distance M | Delivery head M | Characteristics |
| 1 | Conveying of the present invention and | 10～80 | 0.1～0.35 | 100～ 1500 | ～50 | Carry continuously |
| 2 | Send pot type pipeline | 5～15 | 0.1～0.35 | ≤300 | ≤45 | Be interrupted and carry |
| 3 | Rotary valve type conventional pipelines | 5～15 | 0.03～0.08 | ≤100 | ≤30 | Carry continuously |
By the obvious improvement that demonstrates apparatus of the present invention on ability, pressure, distance, height and the characteristics of carrying in the table 1 fully.
Claims (3)
1, a kind of solid powder/particle body strength is carried and the blending device, mainly comprise: feed bin (4), compressor (1), rotovalve (3) and mass transport pipeline (6), it is characterized in that main structure is: said compressor (1) is communicated to eductor (2) through subcooler (101); Said feed bin (4) is communicated to eductor (2) by rotovalve (3); The outlet of eductor (2) is communicated to mass transport pipeline (6), mass transport pipeline (6) is communicated to separation equipment (7), the material outlet of separation equipment (7) is communicated to the mixing silo (9) that has weighing and burden device (8) and have adherent blending pipe structure, the gas vent of separation equipment (7) is communicated in the compressor (1) by gas delivery pipeline (5), and the outlet of mixing silo (9) is connected into product pipeline (10).
2, solid powder/particle body strength according to claim 1 is carried and the blending device, it is characterized in that said separation equipment (7) is the combination of cyclone (701) and bag filter (702), perhaps being cyclone (701), perhaps is bag filter (702).
3, solid powder/particle body strength according to claim 1 is carried and the blending device, the bottom that it is characterized in that said mixing silo with adherent structure (9) is a cone, post adherent blending pipe (902) on the inwall, the diverse location of adherent blending pipe (902) has charging hole, the bottom of adherent blending pipe (902), just the bottom of mixing silo (9) is blending chamber (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150704 CN1197751C (en) | 2003-09-01 | 2003-09-01 | Solid particle pneumatic transfer and blending device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150704 CN1197751C (en) | 2003-09-01 | 2003-09-01 | Solid particle pneumatic transfer and blending device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1493512A CN1493512A (en) | 2004-05-05 |
| CN1197751C true CN1197751C (en) | 2005-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03150704 Expired - Lifetime CN1197751C (en) | 2003-09-01 | 2003-09-01 | Solid particle pneumatic transfer and blending device |
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| Country | Link |
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| CN (1) | CN1197751C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955090B (en) * | 2005-10-26 | 2011-01-26 | 软控股份有限公司 | Distribution method of implementing remote weighing transporting |
| JP2009529477A (en) * | 2006-03-14 | 2009-08-20 | ビーエーエスエフ ソシエタス・ヨーロピア | Method for conveying water-absorbing polymer particles by air |
| US8651773B2 (en) * | 2006-03-14 | 2014-02-18 | Basf Se | Process for pneumatic conveying of water-absorbing polymer particles |
| CN101837269A (en) * | 2010-06-28 | 2010-09-22 | 天津市普瑞电力科学研究有限责任公司 | Self-priming powder feeding device |
| CN103101767B (en) * | 2013-03-13 | 2015-07-08 | 石家庄四药有限公司 | Enclosed transportation method of powder materials capable of absorbing moisture easily |
| CN103612914B (en) * | 2013-11-28 | 2016-07-27 | 中国中煤能源集团有限公司 | The conveyer device of High temperature powder semi-coke and cooling system |
| CN105692205A (en) * | 2014-11-23 | 2016-06-22 | 陕西煤业化工集团(上海)胜帮化工技术有限公司 | Technique for rising pipe pneumatic dilute-phase conveying |
| KR20160073221A (en) * | 2014-12-16 | 2016-06-24 | 주식회사 포스코 | Apparatus for charging fine iron ore |
| CN106477331A (en) * | 2016-12-07 | 2017-03-08 | 承德雅歌包装科技有限公司 | Polyvinyl chloride resin powder feeding device |
| CN107720278B (en) * | 2017-08-29 | 2019-10-18 | 北京普惠实华科技有限公司 | A kind of rotary valve Dense Phase Pneumatic Conveying System and method |
| CN108163581B (en) * | 2017-11-28 | 2020-06-12 | 荆门市格林美新材料有限公司 | Automatic conveying system |
| CN109506125A (en) * | 2018-12-11 | 2019-03-22 | 中国寰球工程有限公司 | Mixing silo unit centralized arrangement and the system conveyed using integral compressor station |
| CN110027134B (en) * | 2019-04-10 | 2024-05-10 | 中国寰球工程有限公司 | Multifunctional comprehensive treatment system and method for polyolefin powder |
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2003
- 2003-09-01 CN CN 03150704 patent/CN1197751C/en not_active Expired - Lifetime
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| CN1493512A (en) | 2004-05-05 |
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Address after: 201206 21F, Jinqiao Road, 1399, Shanghai, Pudong New Area Patentee after: Shanghai Bolong Equipment Technology Co.,Ltd. Address before: 201206 21F, Jinqiao Road, 1399, Shanghai, Pudong New Area Patentee before: SHANGHAI BLOOM POWDER ENGINEERING Inc. |
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Address after: No.1356, Xinxie Road, Huaxin Town, Qingpu District, Shanghai, 201799 Patentee after: Shanghai Bolong Equipment Technology Co.,Ltd. Address before: 201206 21F, Jinqiao Road, 1399, Shanghai, Pudong New Area Patentee before: Shanghai Bolong Equipment Technology Co.,Ltd. |
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Granted publication date: 20050420 |