WO2021217707A1 - 一种煤粉喷射装置 - Google Patents
一种煤粉喷射装置 Download PDFInfo
- Publication number
- WO2021217707A1 WO2021217707A1 PCT/CN2020/089510 CN2020089510W WO2021217707A1 WO 2021217707 A1 WO2021217707 A1 WO 2021217707A1 CN 2020089510 W CN2020089510 W CN 2020089510W WO 2021217707 A1 WO2021217707 A1 WO 2021217707A1
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- WIPO (PCT)
- Prior art keywords
- cavity
- injection
- pulverized coal
- assembly
- dispersion
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims abstract description 55
- 239000007924 injection Substances 0.000 title claims abstract description 55
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 239000006185 dispersion Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
Definitions
- the utility model belongs to an injection device, in particular to a coal powder injection device.
- the meaning of the nozzle is very close to that of the nozzle.
- One is a common name and the other is a more professional term.
- the nozzles currently used for uniform injection of pulverized coal in blast furnaces have certain defects and lack the function of rebounding and removing impurities, which causes the filter inside the shell to be easily clogged by larger coal particles, reducing the speed of pulverized coal passing, and when spraying It will also cause blockage due to the agglomeration of the pulverized coal, which will further reduce the speed of the pulverized coal and even completely block the nozzle.
- the utility model provides a coal powder injection device.
- a coal powder injection device includes:
- a joint body, one end of the joint body is connected to the storage bin;
- At least two sets of nozzles are installed side by side on the other end of the joint body, and the spray end of the nozzle is exposed outside the body of the joint;
- the nozzle includes a dispersion cavity and a spray cavity;
- a dispersing component is arranged in the dispersing cavity
- An injection assembly the injection assembly is arranged in the injection cavity
- the transmission assembly is used to connect the dispersion assembly and the injection assembly.
- the dispersion component includes:
- a first rotating shaft installed along the axial direction of the dispersion cavity, several impeller groups arranged on the first rotating shaft; the interval between the impeller groups satisfies the following conditions: starting from the end far away from the injection cavity, phase The interval between adjacent impeller groups gradually becomes smaller, and the final distribution is equidistant.
- the injection assembly includes:
- a second rotating shaft installed along the axial direction of the injection cavity, and an impeller set on the second rotating shaft equidistantly fixed.
- the impeller group includes: a plurality of blades distributed radially along the rotating shaft, and the blades are arc-shaped;
- the transmission assembly includes: a connecting shaft that penetrates the first rotation shaft and the second rotation shaft at the same time; A worm gear on the drive shaft, a drive motor fixed on the joint body, and a worm gear connected to the output shaft of the drive motor;
- the worm gear is connected to the worm in transmission.
- a heating chamber is provided between the dispersion chamber and the injection chamber, and a plurality of spindle-shaped heating tubes are arranged equidistantly along the axial direction of the heating chamber; The two ends are respectively communicated with the dispersion cavity and the injection cavity.
- the utility model is used to spray coal powder from the storage bin by setting a dispersing component capable of generating airflow, and during the working process of the dispersing component, not only the gas flow can be generated, but also the larger particles of pulverized coal in the storage bin can be lifted.
- the effect of crushing can further prevent clogging; and the use of airflow to accelerate the volatilization of the humidity on the surface of the coal powder, combined with the heating tube to dry the coal powder, make the sprayed coal powder drier and improve the spraying effect.
- Figure 1 is the first structural diagram of the pulverized coal injection device of the present invention.
- Figure 2 is the second structural diagram of the pulverized coal injection device of the present invention.
- Figure 3 is a schematic diagram of the internal structure of the joint body in the present invention.
- Figure 4 is a cross-sectional view of the joint body in the utility model.
- Figure 5 is a schematic diagram of the structure of the impeller assembly in the utility model.
- joint body 1 to 5 are marked as: joint body 1, nozzle 2, dispersion cavity 3, spray cavity 4, impeller group 5, blade 6, connecting shaft 7, worm gear 8, heating cavity 9, and heating tube 10.
- pulverized coal may agglomerate due to moisture absorption or long-term storage, and it is easy to block the nozzle during spraying.
- the inventor has developed a pulverized coal injection device that is sustainable in injection and does not cause clogging.
- three nozzles are provided on the joint body, and one end of the joint body is used to connect with a storage bin, which can be small and convenient.
- the nozzles are installed side by side on the other end of the joint body, and the spray end of the nozzle is exposed outside the other end of the joint body to facilitate the injection of coal powder.
- the nozzle includes a dispersion cavity and an injection cavity.
- the dispersion cavity is located in the nozzle near the end of the storage bin.
- the cavity is located at one end of the nozzle away from the storage bin.
- the dispersion cavity is provided with a dispersion component
- the injection cavity is provided with an injection component.
- the dispersion component and the injection component can simultaneously generate air flow to suck coal powder from the storage bin and spray it.
- the dispersing component is also used for pulverizing coal powder.
- the dispersion assembly includes: a first rotating shaft, the first rotating shaft is installed inside the dispersion cavity along the axial direction of the dispersion cavity, and a plurality of impellers are arranged side by side on the first rotating shaft
- the distance between adjacent impeller groups satisfies the following conditions: starting from the end away from the injection cavity, the interval between adjacent impeller groups gradually becomes smaller, and is finally distributed at equal distances, refer to FIG. 4.
- the adjacent distance between the impeller group in the dispersing component is to disperse the coal powder.
- the pulverized coal Because pulverized coal is placed in the storage bin for a long time, or due to wet weather, the pulverized coal will partially agglomerate. Therefore, before the pulverized coal reaches the injection cavity, the impeller group that is close to the storage bin and has a larger distance is first The pulverized coal particles are crushed, and then the pulverized coal is sprayed out along the direction of the nozzle.
- the injection assembly includes: a second rotating shaft installed along the axial direction of the injection cavity, and an impeller set fixed on the second rotating shaft equidistantly.
- the impeller group in the injection assembly is to generate the airflow to drive the pulverized coal to rotate and be flung out along the direction of the impeller in the impeller group to achieve the effect of spraying gods.
- the structure of the impeller assembly in the injection assembly and the dispersion assembly is the same, as shown in FIG. 5.
- the impeller group includes a plurality of blades distributed radially along the rotating shaft, and the blades are arc-shaped.
- This mechanism requires the powdered coal particles to be dispersed and sprayed directly in a short time. Therefore, the time for the powdered coal to pass through the nozzle is extremely short, so the crushing strength is relatively high. Therefore, the vertical section of the blade is triangular, which can be used for cutting by the blade.
- the role of the blade here can be stainless steel metal.
- the transmission assembly includes: a connecting shaft that penetrates the first rotation shaft and the second rotation shaft at the same time; A worm wheel, a drive motor fixed on the joint body, and a worm that is connected to the output shaft of the drive motor; the worm wheel is in drive connection with the worm.
- the working principle of this embodiment is as follows: open the valve of the storage bin between injections, and then turn on the drive motor, drive the worm connected to the drive motor to drive the worm gear to rotate, and the drive shaft connected to the worm gear to drive the connecting shaft Rotate. Because the connecting shaft is fixedly connected with the first rotating shaft and the second rotating shaft, the first rotating shaft and the second rotating shaft rotate, that is, the impeller group in the dispersing cavity and the spraying cavity rotates, and the airflow is generated. The pulverized coal is under the action of the airflow. From the storage bin, it passes through the dispersion cavity and the injection cavity and finally sprays out. In this process, the impeller assembly in the dispersion cavity also plays a role of smashing.
- Example 1 It has been shown in Example 1 that the pulverized coal may be agglomerated due to moisture, and the wet pulverized coal is not uniform when sprayed. Therefore, in order to solve this technical problem.
- the inventor provided a heating chamber between the dispersion chamber and the injection chamber. A number of spindle-shaped heating tubes were installed in the heating chamber at equal distances along the axial direction; both ends of the heating tube were connected to each other. The dispersion cavity is communicated with the injection cavity.
- the heating tube here can use the existing heating tube, which can be achieved by heating afterwards.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
一种煤粉喷射装置，包括：接头本体（1），接头本体（1）的一端与储存仓连接，至少两组喷嘴（2），喷嘴（2）并列的安装在接头本体（1）的另一端，喷嘴（2）的喷射端暴露在接头本体（1）外，喷嘴（2）包括分散腔（3）和喷射腔（4），分散组件设置在分散腔（3）内，喷射组件设置在喷射腔（4）内，传动组件用于连接分散组件和喷射组件。该装置能够产生气流的分散组件用于将煤粉从存储仓内喷射出来，且在分散组件工作的过程中不仅仅能够产生气流，还能够对存储仓内较大颗粒的煤粉起到搅碎的作用。
Description
本实用新型属于喷射装置，特别是涉及一种煤粉喷射装置。
喷头，与喷嘴的意义非常接近，一个是俗称，一个是比较专业的说法。
目前使用的高炉煤粉均匀喷吹用喷头存在一定缺陷，缺少回弹除杂的功能，导致外壳内部的过滤网容易被较大的煤粉颗粒堵塞，降低煤粉通过的速度，且在喷涂时也会因为煤粉部分的团聚导致堵塞现象，进一步降低煤粉通过的速度甚至也完全将喷嘴堵住。
本实用新型为解决上述背景技术中存在的技术问题，提供一种煤粉喷射装置。
本实用新型通过以下技术方案来实现：一种煤粉喷射装置，包括：
接头本体，所述接头本体的一端与存储仓连接；
至少两组喷嘴，所述喷嘴并列的安装在所述接头本体的另一端，且所述喷嘴的喷射端暴露在所述接头本体外；所述喷嘴包括分散腔和喷射腔；
分散组件，所述分散组件设置在所述分散腔内；
喷射组件，所述喷射组件设置在所述喷射腔内；
传动组件，所述传动组件用于连接分散组件和喷射组件。
在进一步的实施例中，所述分散组件包括：
沿所述分散腔轴向安装的第一旋转轴，设置在所述第一旋转轴上的若干个叶轮组；所述叶轮组之间的间隔满足以下条件：从远离喷射腔的一端开始，相邻叶轮组之间的间隔逐渐变小，且最终呈等距离分布。
在进一步的实施例中，所述喷射组件包括：
沿所述喷射腔轴向安装的第二旋转轴，等距离的固定在所述第二旋转轴上的叶轮组。
在进一步的实施例中，叶轮组包括：沿旋转轴径向分布的多个叶片，所述叶片呈弧形；
相邻叶片的固定端之间没有间隙，相邻叶片的活动端之间留有间隙；所述叶片的竖截面为三角形。
在进一步的实施例中，所述传动组件包括：同时贯穿固定于第一旋转轴和第二旋转轴的连接轴，固定连接于所述连接轴远离所述喷射组件一端的传动轴，紧密套接在所述传动轴上的蜗轮，固定在所述接头本体上的驱动电机，以及传动连接于所述驱动电机的输出轴上的蜗杆；
所述蜗轮与所述蜗杆传动连接。
在进一步的实施例中，所述分散腔与所述喷射腔之间设置有加热腔，所述加热腔的内部沿其轴向等距离设置有若干个纺锤体状加热管；所述加热管的两端分别与所述分散腔和喷射腔相连通。
本实用新型通过设置能够产生气流的分散组件用于将煤粉从存储仓内喷射出来，且在分散组件工作的过程中不仅仅能够产生气流，还能够对存储仓内较大颗粒的煤粉起到搅碎的作用，进一步防止堵塞；并利用气流加快煤粉表面湿度的挥发，结合加热管对煤粉起到干燥的作用，使得喷出来的煤粉更为干燥，提高喷射效果。
图1为本实用新型的煤粉喷射装置的结构示意图一。
图2为本实用新型的煤粉喷射装置的结构示意图二。
图3为本实用新型中的接头本体的内部的结构示意图。
图4为本实用新型中的接头本体的剖视图。
图5为本实用新型中的叶轮组的结构示意图。
图1至图5中的各标注为：接头本体1、喷嘴2、分散腔3、喷射腔4、叶轮组5、叶片6、连接轴7、蜗轮8、加热腔9、加热管10。
下面结合具体实施例和说明书附图对本实用新型做进一步的描述。
发明人在多次实践的过程中发现：现有的喷头较多的是采用具有弹射功能的喷嘴实现喷射，但是却存在以下几个问题：缺少回弹除杂的功能，喷射不够连贯，效率低。其次，粉煤因吸潮或者长时间放置等问题会出现团聚的现象，在喷射时容易堵塞喷嘴。
因此，发明人为了解决上述技术问题，研发出了一种喷射可持续性且不会导致堵塞的一种煤粉喷射装置。
实施例
1
如图1所示，所述接头本体上设置了三个喷嘴，所述接头本体的一端是用于与存储仓连接，所述存储仓可以是小型的便捷式的。
所述喷嘴并列的安装在所述接头本体的另一端，且所述喷嘴的喷射端暴露在所述接头本体的另一端外，便于煤粉被喷射出来。
为了更好的阐述煤粉是如何被喷射出来的，结合图3至图4，所述喷嘴的内部包括分散腔和喷射腔，所述分散腔位于喷嘴内靠近存储仓的一端，则所述喷射腔位于所述喷嘴内远离所述存储仓的一端。所述分散腔的内部设置有分散组件，所述喷射腔的内部设置有喷射组件，所述分散组件和喷射组件能够同时产生气流，将煤粉从存储仓内吸出并喷射。且所述分散组件还用于粉碎煤粉。
具体的，所述分散组件包括：第一旋转轴，所述第一旋转轴沿所述分散腔的轴向安装在所述分散腔的内部，所述第一旋转轴上并列设置有若干个叶轮组，所述叶轮组相邻之间的距离满足以下条件：从远离喷射腔的一端开始，相邻叶轮组之间的间隔逐渐变小，且最终呈等距离分布，参照图4。分散组件中的叶轮组相邻距离的设置是为了对煤粉起到分散的作用。
因煤粉长期放置在存储仓内，或者因天气潮湿的原因煤粉会发生部分的团聚现象，因此在煤粉到达喷射腔之前，通过与存储仓相靠近的且间距较大的叶轮组首先将煤粉颗粒粉碎，然后再顺着喷嘴的方向将煤粉喷出。
所述所述喷射组件包括：沿所述喷射腔轴向安装的第二旋转轴，等距离的固定在所述第二旋转轴上的叶轮组。喷射组件中的叶轮组则是为了发生气流带动煤粉转动并沿叶轮组中的叶轮方向被甩出，达到喷神的效果。
所述喷射组件与所述分散组件中的叶轮组的结构是相同的，如图5所示。叶轮组包括：沿旋转轴径向分布的多个叶片，所述叶片呈弧形。
为了增加分散腔与喷射腔内部的气流，相邻叶片的固定端之间没有间隙，相邻叶片的活动端之间留有间隙。
该机构要求在短时间内将煤粉颗粒分散直接喷射，因此煤粉经喷嘴的时间是极短的，故对粉碎强度要求较高，因此，所述叶片的竖截面为三角形，起到刀片切割的作用，此处的叶片可以是不锈钢金属。
所述传动组件包括：同时贯穿固定于第一旋转轴和第二旋转轴的连接轴，固定连接于所述连接轴远离所述喷射组件一端的传动轴，紧密套接在所述传动轴上的蜗轮，固定在所述接头本体上的驱动电机，以及传动连接于所述驱动电机的输出轴上的蜗杆；所述蜗轮与所述蜗杆传动连接。
本实施例的工作原理如下：在需要喷射之间打开存储仓的阀门，随后开启驱动电机，传动连接于驱动电机的蜗杆带动与之传动的蜗轮转动，与蜗轮传动连接的传动轴，带动连接轴转动。因连接轴与第一旋转轴和第二旋转轴固定连接，因此第一旋转轴和第二旋转轴转动，即分散腔和喷射腔内的叶轮组转动，产生气流，煤粉在气流的作用下从存储仓内依次经过分散腔和喷射腔最后喷射出去，在此过程中，分散腔内的叶轮组还起到粉碎的作用。
实施例
2
在实施例1已经表明，煤粉可能会因为潮湿发生团聚，潮湿煤粉在喷射时是不均匀的，因此，为了解决这一技术问题。发明人在所述分散腔与所述喷射腔之间设置有加热腔，所述加热腔的内部沿其轴向等距离设置有若干个纺锤体状加热管；所述加热管的两端分别与所述分散腔和喷射腔相连通。
即煤粉经过分散腔分散后，被吸入到纺锤体状加热管进行加热除湿，随后再进入到喷射腔进行喷射，此处的加热管采用现有的加热管即可，通过之后发热便能实现上述技术效果。
Claims (6)
- 一种煤粉喷射装置，其特征在于，包括：接头本体，所述接头本体的一端与存储仓连接；至少两组喷嘴，所述喷嘴并列的安装在所述接头本体的另一端，且所述喷嘴的喷射端暴露在所述接头本体外；所述喷嘴包括分散腔和喷射腔；分散组件，所述分散组件设置在所述分散腔内；喷射组件，所述喷射组件设置在所述喷射腔内；传动组件，所述传动组件用于连接分散组件和喷射组件。
- 根据权利要求1所述的一种煤粉喷射装置，其特征在于，所述分散组件包括：沿所述分散腔轴向安装的第一旋转轴，设置在所述第一旋转轴上的若干个叶轮组；所述叶轮组之间的间隔满足以下条件：从远离喷射腔的一端开始，相邻叶轮组之间的间隔逐渐变小，且最终呈等距离分布。
- 根据权利要求1所述的一种煤粉喷射装置，其特征在于，所述喷射组件包括：沿所述喷射腔轴向安装的第二旋转轴，等距离的固定在所述第二旋转轴上的叶轮组。
- 根据权利要求2或3中任一项所述的一种煤粉喷射装置，其特征在于，叶轮组包括：沿旋转轴径向分布的多个叶片，所述叶片呈弧形；相邻叶片的固定端之间没有间隙，相邻叶片的活动端之间留有间隙；所述叶片的竖截面为三角形。
- 根据权利要求1所述的一种煤粉喷射装置，其特征在于，所述传动组件包括：同时贯穿固定于第一旋转轴和第二旋转轴的连接轴，固定连接于所述连接轴远离所述喷射组件一端的传动轴，紧密套接在所述传动轴上的蜗轮，固定在所述接头本体上的驱动电机，以及传动连接于所述驱动电机的输出轴上的蜗杆；所述蜗轮与所述蜗杆传动连接。
- 根据权利要求1所述的一种煤粉喷射装置，其特征在于，所述分散腔与所述喷射腔之间设置有加热腔，所述加热腔的内部沿其轴向等距离设置有若干个纺锤体状加热管；所述加热管的两端分别与所述分散腔和喷射腔相连通。
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| CN117583107A (zh) * | 2023-12-07 | 2024-02-23 | 阿尔法（江苏）重工科技有限公司 | 一种低耗能的立式中速磨煤机喷嘴结构 |
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| DE2717043A1 (de) * | 1977-04-18 | 1978-10-19 | Ludwig Naake | Stauduesenturbine als windkraftwerk |
| WO1984001758A1 (en) * | 1982-10-27 | 1984-05-10 | Skrinjar Designers Constructor | Turbo jet pump |
| CN201416008Y (zh) * | 2009-05-19 | 2010-03-03 | 范威 | 高炉喷煤用煤粉喷射器 |
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| CN204922968U (zh) * | 2015-09-14 | 2015-12-30 | 济南永泉节能环保科技有限公司 | 三相流双速煤粉燃烧器喷口结构 |
| CN110282615A (zh) * | 2019-06-03 | 2019-09-27 | 上海欣材科技有限公司 | 一种用于石墨烯形成的生产制造系统 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2717043A1 (de) * | 1977-04-18 | 1978-10-19 | Ludwig Naake | Stauduesenturbine als windkraftwerk |
| WO1984001758A1 (en) * | 1982-10-27 | 1984-05-10 | Skrinjar Designers Constructor | Turbo jet pump |
| CN201416008Y (zh) * | 2009-05-19 | 2010-03-03 | 范威 | 高炉喷煤用煤粉喷射器 |
| CN202081113U (zh) * | 2011-04-14 | 2011-12-21 | 山东源泽冶金工程技术有限公司 | 双介质导向复合喷煤枪 |
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| CN110282615A (zh) * | 2019-06-03 | 2019-09-27 | 上海欣材科技有限公司 | 一种用于石墨烯形成的生产制造系统 |
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| CN117583107A (zh) * | 2023-12-07 | 2024-02-23 | 阿尔法（江苏）重工科技有限公司 | 一种低耗能的立式中速磨煤机喷嘴结构 |
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