【正文】 8的計算風為 3600=管段1根據(jù)L1=，由《工業(yè)通風》附錄9查出管徑和單位長度摩擦阻力。車間內(nèi)大氣參數(shù)按20℃時查表。首先根據(jù)鋁粉粒徑的大小和性質(zhì)選擇合適的集氣罩和除塵器。12當人體吸入粉塵后，小于5μm的微粒，極易深入肺部，引起中毒性肺炎或矽肺，有時還會引起肺癌。（2）三通的確定三通內(nèi)流速不同的兩股氣流的碰撞，以及氣流速度改變時形成渦流是造成局部阻力的原因。D’3=D3() =360()=308mm根據(jù)通風管道統(tǒng)一規(guī)格，取3=300mm，其對應(yīng)阻力為：=72()=75Pa==47％此時任處于不平衡狀態(tài)。因此取D3=300mm，在運行時在輔以閥門調(diào)節(jié)，消除不平衡。夾角。此外，粉塵還會沾污建筑物，使有價值的古代建筑遭受腐蝕。根據(jù)工藝計算集氣罩尺寸和排風量。關(guān)鍵詞：噴涂；通風；除塵；設(shè)計；水力計算AbstractIn the production process of spray workshop,if not control the emission dust,it can make indoor air environment pollution and destraction ,harmful to works’health,affect the normal ,effective control of production process of harmful effect of indoor air and damage is a very important ventilation is studying this issue of a design is a ventilation and dust removal system design of aluminum powder treatment in spray ,select the Appropriate hood and duster,according to the nature and size of the aluminum ,finish piping layout according to the requirement and the size of the hood and air volume according to the the Pipe diameter and conduct the hydraulic calculation .Select the type and power of the f