机械5

展示厅除尘装置设计 摘要 随着科学技术的不断发展，工业水平的不断进步，粉尘污染问题变得日趋严重，人们对空气质量的要求越来越高了，大气环境越来越受到重视，空气质量也被列入了每天的天气预报中。 木材加工业作为一项基础工业，在社会的发展中扮演了不可或缺的角色，然而，由于木材工艺的要求，木材加工过程中对大气产生了一定程度的粉尘污染。粉尘的污染首先危害的是人民的健康，严重时对工业，农业，林业生产等都能造成危害。消除粉尘污染，改善环境是关系到保护人民健康、多快好省地发展工农业生产的大事。在木材加工过程中产生的粉尘急需很好地被解决。 木材在加工过程中产生的废料有相对粉尘较大的小木块，一些非颗粒型的刨花，还有大量细小的木屑粉尘等。根据粉尘的特性，旋风除尘器等除尘设备在处理小颗粒时效果不好，而布袋除尘器在这方面具有很大的优势。 木工展示厅是个特殊的场所，展示厅内要求保持清洁，不能有粉尘飞扬，以保证操作工人和参观人员的身体健康。由于除尘器位置要求安装在展厅内（一般安装在室外较多），故本设计选用高效布袋除尘器。其体积小，过滤面积大，外形美观，附合展示厅内除尘系统的技术和整体美观要求。除尘系统采用低噪声环保型风机，在管道的设计上考虑美观性和实用性相结合，另外附合企业规定的噪声标准指标达到要求。 关键词：除尘装置,木材加工,粉尘,袋式除尘器 Desig
n for Exhibitio
n Hall’s dust-catcher ABSTRACT With the all alo
ng developme
nt of scie
nce tech
nologya
nd all alo
ng adva
nceme
nt of i
ndustry,pollutio
n problem become heavier a
nd heavier.Air qualityis required more a
nd more,a
nd atmosphere is attached more a
nd more importa
nce to.Air qualityis also take
n i
nto theweather forecast everyday. As a basicwage,wood-machi
ni
ng is playi
ng as a
n u
ntouchable role.However,because of the requireme
nt of thewood-tech
nics,soot come outwhe
n thewood is bei
ng dried.First,soot is bad for people’s health.I
ndustry,agriculture,wood productio
nwill be impacted badlywhe
n the air is polluted heavily.Clea
n up the air pollutio
n,protect a
nd reform the e
nviro
nme
nt is the great thi
ng leadi
ng to people’s health a
nd developi
ng the eco
nomyquicklya
nd effectively.The soot,comi
ng from thewood-machi
ni
ng,must be take
n orderwith immediately. Thewaste material that theyproduce i
n the course of processi
ng has relative dust tha
n big small billet,some is
not thewood shavi
ng of the particle type,there are a large amou
nt of ti
nysaw-dust.Accordi
ng to characteristic of dust,whirlwi
nd dust remover etc.clea
ner bad resultwhile deali
ngwith the ti
nyparticle,a
nd the sack clea
ner hasverygreat adva
ntages i
n this respect. Woodwork Exhibitio
n room is a special place that keepi
ng atmosphere clea
n a
nd
no flyupward,guara
nteei
ng operati
ngworker a
ndvisitors health.Selecti
ng high-efficie
ncysack clea
ner i
n this desig
n because dema
nd for dust remover positio
n is i
n the exhibitio
n room(i
nstall ge
nerallyi
n the getti
ng more outdoors).Its character is small,large filter area,beautiful,co
nform to tech
nologydema
nd a
nd thewhole dust removal system are required beautiful The dust removal system adopts the lowi
n
noise e
nviro
nme
ntal protectio
n type air blower,payi
ng atte
ntio
n to combi
ni
ng practicabilitywith beautyi
n the desig
n of the pipeli
ne,co
nformi
ng to the sta
ndard of the
noise that e
nterprises stipulate i
n additio
n. Keywords: dust-catcher，wood-machi
ni
ng，soot，sack clea
ner 目录 摘要…………………………………………………………………………1 ABSTRACT……………………………………………………………………3 0引言……………………………………………………………………5 1粉尘…………………………………………………………………6 1.1粉尘的种类…………………………………………………………6 1.2粉尘特性……………………………………………………………6 1.2.1密度………………………………………………………………7 1.2.2粘附性……………………………………………………………7 1.2.3爆炸性………………………………………………………………7 1.2.4荷电性和比电阻……………………………………………………7 1.2.5润湿性………………………………………………………………7 1.2.6粉尘粒径及粒径分布………………………………………………7 1.3粉尘的危害……………………………………………………………8 2除尘………………………………………………………………………8 2.1木工除尘的特点…………………………………………………………9 2.2除尘机理………………………………………………………………9 2.3除尘的三个阶段………………………………………………………10 2.4除尘器分类…………………………………………………………12 2.5除尘器的介绍…………………………………………………………13 2.5.1重力除尘器…………………………………………………………13 2.5.2惯性除尘器…………………………………………………………14 2.5.3离心除尘器…………………………………………………………15 2.5.4袋式除尘器…………………………………………………………15 2.5.5洗涤除尘器…………………………………………………………16 2.5.6电除尘器……………………………………………………………16 2.6除尘器的选择…………………………………………………………17 2.7脉冲袋式除尘器………………………………………………………17 2.7.1脉冲袋式除尘器的除尘原理………………………………………18 2.7.2脉冲袋式除尘器的优点……………………………………………19 2.7.3影响脉冲袋式除尘器性能的因素…………………………………19 3管路设计计算及风机选择………………………………………………20 3.1管路设计………………………………………………………………20 3.1.1管路形式和操作要点………………………………………………20 3.1.2管路材质……………………………………………………………21 3.2管路阻力计算…………………………………………………………21 3.3计算系统的总阻力……………………………………………………37 3.4风机的选择……………………………………………………………38 3.5管路阻力二次计算……………………………………………………40 3.6计算系统的二次总阻力………………………………………………48 3.7风机的二次选择………………………………………………………48 4噪声控制…………………………………………………………………49 4.1噪声控制的方法………………………………………………………49 4.2降低噪声措施…………………………………………………………49 5结论………………………………………………………………………50 参考文献……………………………………………………………………51 附录…………………………………………………………………………51 致谢…………………………………………………………………………51