下引式仓泵
仓泵
F型仓式(shi)气(qi)力(li)输(shu)送(song)(song)(song)泵是在吸取国(guo)内外同类产(chan)品技术(shu)于结构(gou)完善的(de)基础(chu)上,采(cai)用(yong)正压气(qi)力(li)输(shu)送(song)(song)(song)方(fang)式(shi)输(shu)送(song)(song)(song)粉(fen)粒状(zhuang)物(wu)(wu)料(liao),适(shi)用(yong)于电(dian)厂粉(fen)煤(mei)灰、水泥、铸造型砂、矿粉(fen)、粮食、化工原料(liao)等粉(fen)粒状(zhuang)物(wu)(wu)料(liao)的(de)输(shu)送(song)(song)(song),可根据具体地形布置(zhi)输(shu)送(song)(song)(song)管道,实(shi)现集中(zhong)、分散、大高度、长(zhang)距离输(shu)送(song)(song)(song),输(shu)送(song)(song)(song)过程不受气(qi)候条件影响,能确(que)保物(wu)(wu)料(liao)不受潮,利于生产(chan)和环(huan)境保护,本(ben)身配置(zhi)自动(dong)化操作台,可实(shi)现手动(dong)和自动(dong)控(kong)制,自动(dong)控(kong)制采(cai)用(yong)继电(dian)器(qi)或PLC微(wei)处理(li)器(qi)两(liang)种形式(shi)。通过长(zhang)期运(yun)行,实(shi)践证明,其(qi)性能稳定,质量(liang)可靠,无粉(fen)尘污染,是较(jiao)理(li)想的(de)气(qi)力(li)输(shu)送(song)(song)(song)设备。
工(gong)作原理
1. 进料阶段
进(jin)料(liao)阀(fa)和(he)排气阀(fa)打开,物料(liao)自(zi)由落入泵体内,料(liao)满后,料(liao)位计(ji)发出信号,进(jin)料(liao)阀(fa)和(he)排气阀(fa)自(zi)动关闭,完(wan)成(cheng)进(jin)料(liao)过程;
2. 流(liu)化加(jia)压阶(jie)段
打开进气阀(fa),压(ya)缩空气进入泵(beng)体上部(bu)(bu)及底部(bu)(bu),上部(bu)(bu)加压(ya),下(xia)部(bu)(bu)空气扩散后穿(chuan)过流化床,使物料呈(cheng)流态化状态,同时泵(beng)体内压(ya)力上升;
3. 输(shu)送(song)阶段
当(dang)泵(beng)内压力达到一定(ding)值时,压力表或压力开关发出(chu)信号,出(chu)料(liao)阀(fa)自动打开,流(liu)化床上(shang)的(de)物料(liao)流(liu)化加强(qiang),输送(song)开始,泵(beng)内物料(liao)逐渐减少,此时流(liu)化床上(shang)的(de)物料(liao)始终处于边流(liu)化边输送(song)的(de)状态;
4. 吹扫阶(jie)段(duan)
当泵内物料(liao)输(shu)(shu)送完(wan)毕,压力下(xia)降(jiang)到(dao)管道阻力时,压力表(biao)或(huo)压力开关发出信(xin)号,通气(qi)延续一(yi)(yi)定时间,压缩空气(qi)清扫管路(lu),然后进气(qi)阀关闭,间隔一(yi)(yi)定时间,关闭出料(liao)阀,打开进料(liao)阀,完(wan)成一(yi)(yi)次输(shu)(shu)送循环。
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