此设计采用对选矿用通风机，采用两极电机驱动的方式，对对旋风机的优点进行了进一步的了解，故采用对旋风机。 根据所给的设计参数及有关的设计要求。具体内容包括：通风方式的选择，总体结构方案的确定，叶轮的设计，疏流罩、扩散器和集流器的设计和选择，通风机消声装置的设计。本次设计更加注意对旋通风机的消音问题，注重了电动机的隔爆设计。 关键词:对旋;防暴;轴流通风机;消音器 Abstract The structural desig
n, the ve
ntilator tomography belo
ngs to mi
ne axial fa
n, co
nsideri
ng the mi
ni
ng will have ple
nty of harmful gases, a
nd ca
n cause high co
nce
ntratio
ns of gas explosio
n. Alo
ng with the i
ncrease of mi
ni
ng depth, temperature will gradually rise, these factors for u
ndergrou
nd work perso
n
nel's health a
nd safety of coal productio
n are extremely detrime
ntal to the more serious, the worki
ng perso
n
nel of u
ndergrou
nd mi
ne safety hazards a
nd treme
ndous. A survey of the curre
nt tre
nd of domestic, the desig
n of the co
nce
ntratio
n polarizatio
n, with fa
n motor drivi
ng mode, o
n the merits of the whirlwi
nd machi
ne, the further u
ndersta
ndi
ng of cyclo
ne machi
ne. Accordi
ng to the desig
n parameters a
nd desig
n requireme
nts. Co
nte
nts i
nclude: overall selectio
n of ve
ntilatio
n, desig
n, structural desig
n, flow of the impeller, diffuser, a
nd ru
noff, desig
n a
nd selectio
n of the desig
n of fa
n sile
ncer. The desig
n of the ve
ntilator to pay more atte
ntio
n to the problem, pay atte
ntio
n to the motor deade
ned the isolatio
n desig
n. Keywords To spi
n riot axial fa
n muffler 目录 摘要I Abstract II 第1章绪论1 1.1选题的意义1 1.2国内外现状和发展趋势1 1.3设计的主要内容3 第2章结构设计方案的选择和确定4 2.1结构方案图的选择4 2.2比较两种结构的优缺点5 第3章通风机总体结构设计10 3.1通风方式的确定10 3.1.1抽出式通风10 3.2.2压入式通风10 3.2结构方案简图设计12 3.3主要结构形式的选取12 3.3.1扩散器13 3.3.2集流器与流线罩14 3.3.3叶轮14 3.3.4外壳15 3.3.5确定通风机各级风压比15 3.3.6选择电动机的功率和型号15 第4章叶轮的结构设计18 4.1第一级叶轮的设计18 4.1.1确定叶轮毂比及轮毂直径18 4.1.2确定计算截面20 4.1.3叶片几何尺寸的计算20 4.1.4叶片的绘制23 4.1.5叶轮强度计算25 4.1.6键的校核28 4.2第二级叶轮的设计29 4.2.1确定叶轮毂比及轮毂直径29 4.2.2确定计算截面30 4.2.3叶片几何尺寸的计算31 4.2.4叶片的绘制33 第5章主要结构部件的设计选型36 5.1集流器与流线罩的设计36 5.1.1集流器的设计36 5.1.2流线罩的设计36 5.2扩散器的设计38 5.3通风机轴向间隙和径向间隙38 5.3.1径向间隙的计算38 5.3.2轴向间隙的计算39 5.4风筒的选择40 5.4.1风筒选用要求40 5.4.2局部通风机的风筒选型41 第6章消声器的设计42 结论44 致谢45 参考文献46 附录47 CONTENTS Abstract 2 Chapter 1 I
ntroductio
n 1 1.1 The topic 1 1.2 Status a
nd developme
nt tre
nd 1 1.3 The mai
n co
nte
nts of the desig
n 3 Chapter 2 The selectio
n of desig
n scheme a
nd structure 4 2.1 Structure scheme selectio
n of diagram 4 2.2Compare the adva
ntages a
nd disadva
ntages of the two ki
nds of structure 5 Chapter 3 Fa
n structural desig
n 10 3.1 Ve
ntilatio
n 10 3.1.1 Drawer-type ve
ntilatio
n 10 3.2..2 I
n ve
ntilated 10 3.2 Structure scheme desig
n diagram 12 3.3 The mai
n structure form 12 3.3.1 Diffuser 13 3.3.2 Collecti
ng a
nd streamli
ne mask 14 3.3.3 Impeller 14 3.3.4 Shell 15 3.3.5 Determi
ne the ve
ntilator tha
n at wi
nd 15 3.3.6 Choose the motor power a
nd models 15 Chapter 4 Impeller structure desig
n 18 4.1 The first level of the impeller desig
n 18 4.1.1 Determi
ne diameter wheel rims leaves ratio 18 4.1.2 Determi
ne the computatio
n sectio
n 20 4.1.3 Blade geometry size calculatio
n 20 4.1.4 The blade 23 4.1.5 Impeller stre
ngth calculatio
n 25 4.1.6 The key 28 4.2 Article 2 the impeller's desig
n 29 4.2.1 Determi
ne diameter wheel rims leaves ratio 29 4.2.2 Determi
ne the computatio
n sectio
n 30 4.2.3 Blade geometry size calculatio
n 31 4.2.4 The blade 33 Chapter 5 The mai
n structure parts desig
n selectio
n 36 5.1 Collecti
ng a
nd streamli
ne cover desig
n 36 5.1.1 Collecti
ng desig
n 36 5.1.2 Streamli
ne cover desig
n 36 5.2 Diffuser desig
n 38 5.3 Fa
n radial cleara
nce a
nd axial cleara
nce 38 5.3.1 Radial cleara
nce 38 5.3.2 The axial cleara
nce 39 5.4 The washroom 40 5.4.1 Hair chooses requireme
nts 40 5.4.2 The selectio
n of local-ve
ntilator hair-dryer 41 Chapter 6 The muffler desig
n 42 Theory 44 Cause 45 Participatio
n i
n exam 46 Attached 47 第1章绪论 煤矿井工生产是地下作业，自然条件比较复杂。地面空气在进入井下并流经各作业场所的过程中，将掺入有毒有害气体和矿尘，成分逐渐发生变化。同时，由于地热作用，人体和机械的散热、水分的蒸发等，井下空气的温度和湿度都会显着提高，造成不良的气候条件。因此，对矿井必须进行通风。