CN100569336C - Flow guide device for bag filter air duct - Google Patents
Flow guide device for bag filter air duct Download PDFInfo
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- CN100569336C CN100569336C CNB2007100201833A CN200710020183A CN100569336C CN 100569336 C CN100569336 C CN 100569336C CN B2007100201833 A CNB2007100201833 A CN B2007100201833A CN 200710020183 A CN200710020183 A CN 200710020183A CN 100569336 C CN100569336 C CN 100569336C
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- 238000005192 partition Methods 0.000 claims abstract description 13
- 230000007423 decrease Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
用于袋除尘器风道的导流装置属袋除尘器技术领域。其所要解决的技术问题是：提供一种能够提高均风效果，降低袋除尘器运行阻力，提高系统通风量，延长滤袋使用寿命的用于袋除尘器风道的导流装置。其技术要点是：风道中的进出风道隔板(3)按袋室设置，整体呈阶梯状；进风道(4)中的各个袋室均上、下交错的安装两块与阶梯状进风道高度相对应的耙式导流板(2)。由于将风道中的进出风道隔板设计成阶梯状，且在进风道中每个袋室内安装两块上下交错的耙式导流板，从而使各袋室达到相同的过滤负荷，最大限度地增加了风道内粉尘的惯性沉降量，减少了滤袋上粉尘吸附量，降低了滤袋的过滤阻力和出口含尘气体浓度排放，提高了滤袋使用寿命。
The utility model relates to a flow guiding device used for the air duct of a bag dust collector, which belongs to the technical field of bag dust collectors. The technical problem to be solved is to provide a flow guiding device for the air duct of the bag filter which can improve the air uniformity effect, reduce the running resistance of the bag filter, increase the ventilation volume of the system, and prolong the service life of the filter bag. Its technical points are: the inlet and outlet air duct partitions (3) in the air duct are set according to the bag chambers, and the whole is stepped; Rake deflectors (2) corresponding to the height of the duct. Since the partitions of the air inlet and outlet in the air duct are designed in a stepped shape, and two rake-type deflectors staggered up and down are installed in each bag room in the air inlet channel, so that each bag room can achieve the same filtration load and maximize Increase the inertial settlement of dust in the air duct, reduce the dust adsorption on the filter bag, reduce the filter resistance of the filter bag and the discharge of dusty gas concentration at the outlet, and improve the service life of the filter bag.
Description
技术领域 technical field
本发明涉及一种用于袋除尘器风道的导流装置。The invention relates to a flow guiding device for a bag filter air duct.
背景技术 Background technique
目前广泛用于治理建材、冶金化工等行业粉尘污染的袋除尘器主要有气箱式脉冲袋除尘器、管式脉冲袋除尘器等。气箱式脉冲袋除尘器进出风共用同一个风道，进出风口、含尘气体和净化后的干净气体由一块倾斜的风道隔板隔开。含尘气体经由进风道进入袋除尘器的灰斗，经滤袋过滤后，再由风道出口排除。这种风道存在技术缺陷，特别是处理20万m3/h以上含尘气体的大型袋除尘器，缺陷更加明显。其存在的主要问题为：At present, the bag dust collectors widely used in the control of dust pollution in building materials, metallurgy and chemical industries mainly include air box pulse bag dust collectors and tubular pulse bag dust collectors. The inlet and outlet of the air box pulse bag filter share the same air duct, and the air inlet and outlet, dusty gas and purified clean gas are separated by an inclined air duct partition. The dusty gas enters the ash hopper of the bag filter through the air inlet, is filtered by the filter bag, and then is discharged from the outlet of the air duct. There are technical defects in this kind of air duct, especially the large-scale bag filter that handles dusty gas above 200,000 m 3 /h, the defects are more obvious. Its main problems are:
1、不能更好地将各袋室风量分配均匀，各袋室不能保持几乎相同的过滤负荷，使有的袋除尘器过滤阻力较高，滤袋寿命缩短。1. The air volume of each bag room cannot be better distributed evenly, and the filter load of each bag room cannot be maintained almost the same, so that some bag dust collectors have high filtration resistance and shorten the life of filter bags.
2、风道中含尘气体中的粉尘惯性沉降量较少，大量的粉尘吸附在滤袋上，滤袋过滤阻力较高，清灰周期加快，滤袋寿命缩短。2. The inertial sedimentation of dust in the dusty gas in the air duct is small, a large amount of dust is adsorbed on the filter bag, the filter bag has high filtration resistance, the cleaning cycle is accelerated, and the life of the filter bag is shortened.
管式脉冲袋除尘器进风方式与气箱式脉冲袋除尘器基本相同，存在着同样的问题。The air intake mode of the tubular pulse bag filter is basically the same as that of the air box pulse bag filter, and there are the same problems.
发明内容 Contents of the invention
本发明所要解决的技术问题是：旨在克服上述两类脉冲式袋除尘器存在的缺点，提供一种能够提高均风效果，降低袋除尘器运行阻力，提高系统通风量，延长滤袋使用寿命的用于袋除尘器风道的导流装置。其技术方案是：一种用于袋除尘器风道的导流装置，其特征在于：风道中的进出风道隔板按袋室设置，整体呈阶梯状，阶梯状进出风道隔板的阶梯高度由进风口至出风口依次降低；进风道中的各个袋室内均上、下交错的安装两块与阶梯状进风道高度相对应的耙式导流板。The technical problem to be solved by the present invention is: to overcome the shortcomings of the above two types of pulse bag filter, to provide a filter bag filter that can improve the effect of air uniformity, reduce the running resistance of the bag filter, increase the ventilation of the system, and prolong the service life of the filter bag. The guide device for the air duct of the bag filter. The technical solution is: a flow diversion device for the air duct of the bag filter, which is characterized in that: the air duct partitions in and out of the air duct are arranged according to the bag chamber, and the whole is in the shape of a ladder, and the ladder-like steps for entering and exiting the air duct partitions The height decreases sequentially from the air inlet to the air outlet; each bag room in the air inlet is staggered up and down to install two rake-type deflectors corresponding to the height of the stepped air inlet.
上述耙式导流板带有折压角度，其折压角度由进风口至出风口按各袋室依次减少2度。The above-mentioned rake-type deflector has a bending angle, and the bending angle decreases by 2 degrees from the air inlet to the air outlet according to each bag room.
其技术效果是：本发明的用于袋除尘器风道的导流装置，根据每个袋室风量均等的原则，计算出每个袋室所对应风道通风截面，并将风道中的进出风道隔板设计成阶梯状，使各袋室达到相同的过滤负荷；同时，在进风道中每个袋室内安装两块上下交错、带有角度的耙式导流板，从而最大限度地增加了风道内粉尘的惯性沉降量，减少了滤袋上粉尘吸附量，大大降低了滤袋的过滤阻力和出口含尘气体浓度排放，提高了滤袋使用寿命，既有非常好的均风效果，又有较好的粉尘沉降效果。现场运行实测各袋室负压及过滤压差相等，粉尘沉降量达25％-35％，大大提高了除尘器工作效率，降低了滤袋的粉尘吸附量及过滤阻力，降低了清灰强度，减少了清灰次数。Its technical effect is: the flow guiding device for the air duct of the bag filter of the present invention calculates the ventilation section of the air duct corresponding to each bag room according to the principle of equal air volume of each bag room, and calculates the air flow in and out of the air duct. The channel partition is designed in a stepped shape, so that each bag room can achieve the same filtration load; at the same time, two rake-type deflectors that are staggered up and down and angled are installed in each bag room in the air inlet channel, thereby maximizing the increase in filtration efficiency. The inertial settlement of dust in the air duct reduces the dust adsorption on the filter bag, greatly reduces the filter resistance of the filter bag and the discharge of dust-laden gas concentration at the outlet, and improves the service life of the filter bag. It has better dust settlement effect. On-site operation measured that the negative pressure and filter pressure difference of each bag room are equal, and the dust settlement amount reaches 25%-35%, which greatly improves the working efficiency of the dust collector, reduces the dust adsorption capacity and filter resistance of the filter bag, and reduces the cleaning intensity. Reduced cleaning times.
采用本发明导流装置的脉冲式袋除尘器，与同规格同风量的其它袋除尘器相比，出口排放浓度在＜10mg/Nm3，运行阻力＜800Pa，滤袋使用寿命达3年以上。Compared with other bag filters with the same specification and air volume, the pulse bag filter adopting the diversion device of the present invention has outlet emission concentration <10mg/Nm 3 , running resistance <800Pa, and filter bag service life of more than 3 years.
附图说明 Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为图1的左视图。Fig. 2 is a left side view of Fig. 1 .
具体实施方式 Detailed ways
如图1、2所示，带灰斗8的箱体上部的一侧设有与进风管连接的进风法兰1，与该进风管口相对应的箱体另一侧的上部设有与排风管连接的出风法兰7，箱体内由进出风道隔板3将进、出风道隔开。箱体内上方安装有花板，滤袋9的上口安装在花板的通孔上，花板与箱体的顶端之间形成净气室6。除尘器由室隔板10分隔为多个袋室。风道中的进出风道隔板按袋室设置，整体呈阶梯状。阶梯状进出风道隔板的阶梯高度依据进风道4的风速，由进风口至出风口依次降低，直至与出风法兰的底部平行为止。进风道中每个袋室与进风道高度相对应的位置处的风道隔板上11，焊接两块上下交错设置的耙式导流板2。耙式导流板由厚度为5mm的钢板经折压成一定的角度，进风口处的第一袋室内设置的两块耙式导流板的折压角度为150度，其它各袋室内设置的两块耙式导流板的折压角度，均依次每向后每袋室减少2度。As shown in Figures 1 and 2, one side of the upper part of the box body with
其工作原理：当含尘气体由进风法兰口1(进风口)进入进风道4，由于阶梯式进出风道隔板3的作用，含尘气体中的粉尘首先与耙式导流板2发生碰撞，较粗颗粒粉尘失去惯性，由风道沉入灰斗，其余粉尘则随气流上升均匀地进入各袋室，由滤袋9进行过滤，过滤后的干净气体经由净气室6、出风道5、出风法兰7排入大气，完成除尘过程。Its working principle: when the dust-laden gas enters the
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100201833A CN100569336C (en) | 2007-03-02 | 2007-03-02 | Flow guide device for bag filter air duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100201833A CN100569336C (en) | 2007-03-02 | 2007-03-02 | Flow guide device for bag filter air duct |
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| CN101053728A CN101053728A (en) | 2007-10-17 |
| CN100569336C true CN100569336C (en) | 2009-12-16 |
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| CNB2007100201833A Expired - Fee Related CN100569336C (en) | 2007-03-02 | 2007-03-02 | Flow guide device for bag filter air duct |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103830978A (en) * | 2014-04-01 | 2014-06-04 | 东南大学 | Airflow distribution device for down-inlet dust collector |
| CN105251280B (en) * | 2015-11-11 | 2017-03-01 | 陈美青 | Grinding dust cabinet |
| CN107670448B (en) * | 2017-11-06 | 2023-08-25 | 中联重科股份有限公司 | Dust collector and system sand production line |
| CN108160651B (en) * | 2017-12-30 | 2023-08-25 | 江苏科泰检测技术服务有限公司 | Environment-friendly fume chamber for metal detection |
| CN108836182A (en) * | 2018-08-29 | 2018-11-20 | 苏州市春菊电器有限公司 | A kind of handset of vertical push rod dust catcher and vertical push rod dust catcher |
| CN112944880A (en) * | 2021-03-01 | 2021-06-11 | 北京科技大学 | Air duct assembly of hot air drying equipment |
| CN113207700B (en) * | 2021-04-26 | 2022-09-02 | 青岛科创信达科技有限公司 | Asymmetric stepped air supply system suitable for building cultivation and improvement method |
| CN113622213B (en) * | 2021-07-29 | 2023-08-08 | 威海新泓联转印材料科技有限公司 | High-efficient drying-machine is used in papermaking |
| CN114247219B (en) * | 2021-12-28 | 2023-04-14 | 科林环保技术有限责任公司 | High-tolerance anti-blocking air inlet pipe |
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