雷蒙磨磨粉系統中風力系統的研究與分析

作者：紅星機器 發表于： 2013-03-29 11:01:13更新于： 2020-05-27 17:25:19

楊帥軍老師 紅星技術工程師

獲取報(bao)價

雷蒙磨粉機的組成結構一般由(you)雷蒙磨(又稱(cheng)主機)、鼓風(feng)機、大旋風(feng)分(fen)離器以及管(guan)道組成。風(feng)力(li)系統是雷蒙磨系統的(de)重要(yao)組成部分(fen)，本文將對風(feng)力(li)系統作詳細的(de)介紹。

雷蒙磨粉機

風(feng)(feng)力環(huan)路中共有2個(ge)(ge)零壓(ya)(ya)(ya)面，即(ji)系(xi)統(tong)中壓(ya)(ya)(ya)力為零的(de)點所組成的(de)面，一(yi)(yi)個(ge)(ge)在(zai)鼓風(feng)(feng)機內(nei)(nei)，一(yi)(yi)個(ge)(ge)在(zai)雷蒙磨內(nei)(nei)。雷蒙磨加(jia)料口(kou)處于負壓(ya)(ya)(ya)區，因(yin)此(ci)零壓(ya)(ya)(ya)面在(zai)加(jia)料口(kou)下(xia)部，即(ji)懸輥和磨環(huan)（鋼圈(quan)）一(yi)(yi)帶。開(kai)機時(shi)，要先開(kai)風(feng)(feng)機后開(kai)主機，開(kai)機瞬間(jian)(jian)從加(jia)料口(kou)會(hui)冒(mao)出大量粉(fen)(fen)塵(chen)，須開(kai)機數(shu)分鐘后，加(jia)料口(kou)由正壓(ya)(ya)(ya)轉(zhuan)為負壓(ya)(ya)(ya)，粉(fen)(fen)塵(chen)才不再冒(mao)出。因(yin)此(ci)加(jia)料用(yong)星形給料器(qi)應密封(feng)，若有間(jian)(jian)隙，將(jiang)冒(mao)風(feng)(feng)冒(mao)粉(fen)(fen)。此(ci)外，維修門也應密封(feng)，若其(qi)密封(feng)墊片磨損，應換(huan)新墊片，防止冒(mao)風(feng)(feng)冒(mao)粉(fen)(fen)。大旋(xuan)風(feng)(feng)分離(li)器(qi)底(di)部卸(xie)(xie)料口(kou)應密封(feng)，當從卸(xie)(xie)料口(kou)處吸入(ru)空(kong)氣(qi)達到(dao)旋(xuan)風(feng)(feng)分離(li)器(qi)工作(zuo)風(feng)(feng)量的(de)10%~15%時(shi)，其(qi)收(shou)塵(chen)效率(lv)降到(dao)近似于零。一(yi)(yi)般(ban)大旋(xuan)風(feng)(feng)分離(li)器(qi)的(de)收(shou)塵(chen)效率(lv)約為90%。

在(zai)(zai)環路系(xi)統中，全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)和(he)(he)靜壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)二者(zhe)之間有一(yi)定(ding)距(ju)離(li)。這段距(ju)離(li)內的(de)阻(zu)力(li)等于全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)與靜壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)之間的(de)壓(ya)(ya)(ya)(ya)力(li)差(cha)。在(zai)(zai)移(yi)(yi)(yi)(yi)動(dong)(dong)的(de)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)的(de)計算中，必(bi)須(xu)使(shi)用全(quan)壓(ya)(ya)(ya)(ya)和(he)(he)全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)的(de)概念。全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)和(he)(he)靜壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)總是(shi)成雙出(chu)現的(de)，若(ruo)一(yi)個零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)移(yi)(yi)(yi)(yi)動(dong)(dong)，則(ze)另一(yi)個零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)就會跟(gen)著移(yi)(yi)(yi)(yi)動(dong)(dong)。當(dang)余(yu)(yu)風(feng)(feng)管阻(zu)力(li)不大(da)時，運行(xing)中零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)在(zai)(zai)加料口以(yi)下，一(yi)般(ban)不需(xu)(xu)要(yao)移(yi)(yi)(yi)(yi)動(dong)(dong)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)。生產中應通過(guo)控制余(yu)(yu)風(feng)(feng)管的(de)流量(liang)（控制余(yu)(yu)風(feng)(feng)管閘門）使(shi)全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)穩(wen)定(ding)地(di)處(chu)于懸輥(gun)和(he)(he)磨環（鋼圈）處(chu)，當(dang)余(yu)(yu)風(feng)(feng)管的(de)風(feng)(feng)量(liang)控制在(zai)(zai)合適的(de)數量(liang)范圍時，阻(zu)力(li)又不大(da)于所列(lie)值，則(ze)可以(yi)不移(yi)(yi)(yi)(yi)動(dong)(dong)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)。當(dang)余(yu)(yu)風(feng)(feng)管采用阻(zu)力(li)大(da)的(de)除塵器時，或因防(fang)塵要(yao)求高需(xu)(xu)要(yao)整個風(feng)(feng)力(li)環路在(zai)(zai)負壓(ya)(ya)(ya)(ya)狀態下工作時，全(quan)壓(ya)(ya)(ya)(ya)零(ling)(ling)(ling)(ling)(ling)壓(ya)(ya)(ya)(ya)面(mian)(mian)(mian)(mian)需(xu)(xu)要(yao)由雷(lei)蒙磨內移(yi)(yi)(yi)(yi)到(dao)鼓(gu)風(feng)(feng)機出(chu)口附(fu)近，移(yi)(yi)(yi)(yi)到(dao)鼓(gu)風(feng)(feng)機內。