CN205002148U - Wind powder blender - Google Patents
Wind powder blender Download PDFInfo
- Publication number
- CN205002148U CN205002148U CN201520654868.3U CN201520654868U CN205002148U CN 205002148 U CN205002148 U CN 205002148U CN 201520654868 U CN201520654868 U CN 201520654868U CN 205002148 U CN205002148 U CN 205002148U
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- China
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- powder
- air
- pipeline
- vent
- mixer
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- Expired - Fee Related
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Abstract
The utility model discloses a wind powder blender has solved the whitewashed problem of malleation support that current wind powder blender exists. Technical scheme includes the body and for the tube cell way, the one end of body is equipped with the tuber pipe one time, the lower extreme of saying for the tube cell is through elbow and circumference festival and this body coupling, its characterized in that, say for the tube cell that even the opening of the same cross -section level that goes up there are a plurality of induced air mouths, the induced air pipeline is connected to the induced air mouth, have an area of the necking segment of the lower extreme opening setting of festival at the body, be equipped with the layer board in the necking segment. The utility model discloses simple structure, convenient to use, the powder is evenly continuous, applicable in multiple powder manufacturing apparatus down.
Description
Technical field
The utility model relates to a kind of boiler powder process field, the air and powder mixer of a kind of coal-burning boiler use specifically.
Background technology
Boiler operatiopn, not only requires to provide certain coal dust amount to powder equipment, and requires continuity, the uniformity of good adjusting function and height.Ensure the safe operation of powder manufacturing apparatus and boiler to the continuity of powder equipment, ensure powder manufacturing apparatus stable operation and Boiler Stable Combustion to the uniformity of powder equipment.In a word, air and powder mixer plays throat function in boiler combustion system, and it can be the basic guarantee of boiler safety, economy, stable operation continuously, equably to powder.The reasonability of air and powder mixer structural design will directly affect the quality of boiler combustion.
Country is to environmental requirement increasingly stringent in recent years, each station boiler, Industrial Boiler is accelerated increasingly to boiler plant transformation and upgrade, especially in the process to the low nitrogen transformation of combustion system, by increasing steady combustion, spout controllable register, reduce the means such as nozzle exit is long-pending, adjustment primary air velocity and cause burner resistance to increase, and then affect the normal work of air and powder mixer.
In the actual motion of boiler, generally there is following problem in tradition air and powder mixer: 1, traditional mixer in actual use, the air of body interior is flushed in the circumference joint of lower powder, easy formation malleation holder powder, affect the uniformity of powder falling, make the coal dust amount entering burner hearth uneven, even occur disconnected powder phenomenon.Severe patient causes the decline of boiler pressure, steam temperature, and the boiler load short time is forced to reduce; 2, air and powder mixer inside is generally provided with fixing supporting plate, air and powder mixer can not regulate according to service requirement and coal varitation, reducing section cannot be coordinated and " more reasonably descend powder space " and " enough negative pressure " two restriction conditions, often occur that the lower powder of air and powder mixer outlet is uneven, be interrupted lower powder phenomenon, cause burner nozzle to occur bulk coal dust or disconnected powder, cause that cold conditions negative pressure is unstable, boiler combustion fluctuation is even flame-out.
Summary of the invention
Order of the present utility model is to solve the problems of the technologies described above, and provides simple, easy to use, the lower powder uniformly continous of a kind of structure, is applicable to the air and powder mixer of multiple powder manufacturing apparatus.
Technical scheme comprise body and give powder pipeline, one end of described body is provided with primary air piping, the described lower end of powder pipeline of giving is connected with body with circumference joint through elbow, it is characterized in that, describedly have multiple air-vent to same cross section horizontal homogeneous on powder pipeline, described air-vent connects air inducing pipeline, and the lower ending opening of described circumference joint is arranged on the reducing section of body, is provided with supporting plate in described reducing section.Described is 265-950mm to the height of air-vent centre distance elbow upper end on powder pipeline.
Described air inducing pipeline is 15 ° ~ 45 ° with the angle to powder pipeline.
The caliber of described air inducing pipeline with giving the diameter ratio of powder pipeline is: 0.17-0.25.
By to a certain cross section level on powder pipeline offering multiple air-vent and air-vent being connected induced duct, introducing to giving in powder pipeline the fraction air stream extracted from air channel nearby, accessing to powder pipeline.Technical staff can suitably adjust air-vent quantity uniform on same cross section according to giving the diameter of powder pipeline.When coal dust via give powder storehouse enter arrive above-mentioned cross section to powder pipeline time, air is flowed through air-vent and sends into powder pipeline with certain speed by the air inducing pipeline in described cross-sectional periphery, take away through coal dust herein, enter elbow, circumference joint, finally mix with the First air in body, part coal dust drops on supporting plate, taken away by the First air in primary air piping, enter burner hearth, avoid the generation of malleation holder powder problem and then ensure that coal dust can enter burner hearth continuously, equably, ensure the safe and stable operation of boiler.In order to ensure blower effect, improve lower powder continuous uniform, preferably described is 265-950mm to the height of air-vent centre distance elbow upper end on powder pipeline; Described air inducing pipeline is 15 ° ~ 45 ° with the angle to powder pipeline.; The caliber of described air inducing pipeline with giving the diameter ratio of powder pipeline is: 0.17-0.25.
Simple, easy to use, the lower powder uniformly continous of the utility model structure, avoid the generation such as local stoppages and pressure holder powder problem, be applicable to multiple powder manufacturing apparatus, in the system of particularly giving powder at remote conveying, application advantage is more obvious.
Accompanying drawing explanation
Fig. 1 is this use new structure schematic diagram.
Wherein, 1-is to powder pipeline, and 2-air inducing pipeline, 3-elbow, 4-has an area of joint, 5-supporting plate, 6-body, 6.1-reducing section, 7-primary air piping, 8-air-vent.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is further explained to the utility model:
See Fig. 1, comprise body 6 and give powder pipeline 1, one end of described body 6 is provided with primary air piping 7, the described lower end of powder pipeline 1 of giving is connected with body 6 with circumference joint 4 through elbow 3, describedly have multiple air-vent 2 to same cross section horizontal homogeneous on powder pipeline 1, described air-vent 2 connects air inducing pipeline 3, and the lower ending opening of described circumference joint 4 is arranged on the reducing section 6.1 of body 6, is provided with supporting plate 5 in described reducing section 6.1.Described height H of giving air-vent 8 centre distance elbow 3 upper end on powder pipeline 1 is 265-950mm; Described air inducing pipeline is 15 ° ~ 45 ° with the angle a to powder pipeline; The caliber d of described air inducing pipeline 2 with giving the diameter D ratio of powder pipeline 1 is: 0.17-0.25.
Operation principle:
Partial air is brought into powder pipeline 1 by air-vent 8 by air inducing pipeline 2, the coal dust falling to powder storehouse is sent into body 6 through elbow 3, circumference joint 4, mixes with the First air in primary air piping 7.
First air enters body 6 by First air pipeline 7, and arrive supporting plate 5 hourly velocity and improve, negative pressure increases, and coal dust carrying capacity strengthens, and leaves air and powder mixer smoothly enter burner hearth by spout by the pulverized coal particle falling to body 6 to powder pipeline, ensures burner hearth smooth combustion.
Introduce air stream by air inducing pipeline 2, below the horizontal cross-section at air-vent 8 place, comprise elbow 3, circumference joint 4 significantly reduces to supporting plate 5 upper area static pressure, effectively can stop malleation holder powder, the generation of coal dust deposition problems.And, can according to different boiler plants, the speed suitably improving or reduce air inducing pipeline 2 air flow controls the size of barometric gradient in above-mentioned zone.
The utility model air and powder mixer ensures powder under the continuous uniform of coal dust by changing to the barometric gradient between powder pipeline and primary air piping, can also solve to a certain extent because of coal dust moisture cake, to the problem of powder inequality or stifled powder under the coal dust that the physical principles such as powder pipeline foreign matters from being blocked cause simultaneously.
Claims (4)
1. an air and powder mixer, comprise body and give powder pipeline, one end of described body is provided with primary air piping, the described lower end of powder pipeline of giving is connected with body with circumference joint through elbow, it is characterized in that, describedly have multiple air-vent to same cross section horizontal homogeneous on powder pipeline, described air-vent connects air inducing pipeline, the lower ending opening of described circumference joint is arranged on the reducing section of body, is provided with supporting plate in described reducing section.
2. air and powder mixer as claimed in claim 1, it is characterized in that, described is 265-950mm to the height of air-vent centre distance elbow upper end on powder pipeline.
3. air and powder mixer as claimed in claim 1, is characterized in that, described air inducing pipeline is 15 ° ~ 45 ° with the angle to powder pipeline.
4. the air and powder mixer as described in any one of claim 1-3, is characterized in that, the caliber of described air inducing pipeline with giving the diameter ratio of powder pipeline is: 0.17-0.25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654868.3U CN205002148U (en) | 2015-08-27 | 2015-08-27 | Wind powder blender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654868.3U CN205002148U (en) | 2015-08-27 | 2015-08-27 | Wind powder blender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205002148U true CN205002148U (en) | 2016-01-27 |
Family
ID=55159033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654868.3U Expired - Fee Related CN205002148U (en) | 2015-08-27 | 2015-08-27 | Wind powder blender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205002148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592076A (en) * | 2018-04-02 | 2018-09-28 | 安徽蓝天盈丰环保科技有限公司 | Injection type coal, pulverulent fuel mixer with negative pressure regulatory function and coal dust mixed method |
-
2015
- 2015-08-27 CN CN201520654868.3U patent/CN205002148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592076A (en) * | 2018-04-02 | 2018-09-28 | 安徽蓝天盈丰环保科技有限公司 | Injection type coal, pulverulent fuel mixer with negative pressure regulatory function and coal dust mixed method |
| CN108592076B (en) * | 2018-04-02 | 2019-06-14 | 安徽蓝天盈丰环保科技有限公司 | Injection type coal, pulverulent fuel mixer and coal dust mixed method with negative pressure regulatory function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170120 Address after: 430205 Hubei city of Wuhan province Optics Valley East Lake New Technology Development Zone Avenue financial Hong Kong four No. 18 Optics Valley Road No. 2 Building 1 unit Central Huijin Patentee after: Wuhan Combustion Control Technology Thermal Engineering Co., Ltd. Patentee after: XUZHOU KERONG ENVIRONMENTAL RESOURCES CO., LTD. Address before: Wuhan University of science and Technology Park East Lake New Technology Development Zone, Hubei province Wuhan city two road 430223 No. 6 Patentee before: Wuhan Combustion Control Technology Thermal Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20190827 |