對于(yu)空(kong)氣脈動(dong)跳汰洗煤機(ji)，風(feng)(feng)、水配合(he)的(de)共同(tong)作用(yong)直接影響跳汰周(zhou)期及床層的(de)松散(san)狀(zhuang)況(kuang)，所以應根據(ju)所要求的(de)床層松散(san)度調節(jie)風(feng)(feng)量(liang)，跳液壓室(shi)(shi)段(duan)的(de)風(feng)(feng)量(liang)比第二(er)段(duan)的(de)大(da)，各段(duan)各分室(shi)(shi)的(de)風(feng)(feng)量(liang)自(zi)入料(liao)到(dao)溢流(liu)堰(yan)依次減(jian)少(shao)，但有時為了加強第二(er)段(duan)中(zhong)煤中(zhong)間分室(shi)(shi)的(de)吸啜作用(yong)，強化細粒矸石(shi)的(de)透(tou)篩(shai)過程，相(xiang)比其他各分室(shi)(shi)，用(yong)風(feng)(feng)量(liang)可適當(dang)的(de)加大(da)。
給入跳(tiao)汰洗(xi)(xi)煤機的(de)水(shui)來(lai)自兩(liang)(liang)個(ge)方面，一是隨(sui)(sui)物料一起給入的(de)水(shui)，二是從篩(shai)下連續可間斷(duan)補加(jia)的(de)篩(shai)下水(shui)，這兩(liang)(liang)部分(fen)水(shui)對于空氣脈(mo)動跳(tiao)汰洗(xi)(xi)煤機機，后都(dou)是通過(guo)溢流堰隨(sui)(sui)輕產物排(pai)出。
洗(xi)煤(mei)機(ji)設備給(gei)(gei)(gei)礦水(shui)(shui)(shui)(shui)主要(yao)是(shi)用(yong)(yong)(yong)(yong)(yong)(yong)來預(yu)先潤(run)濕(shi)煤(mei)炭或礦石(shi)便于(yu)(yu)均勻而(er)又連續的(de)(de)(de)(de)給(gei)(gei)(gei)料(liao)(liao)，該(gai)水(shui)(shui)(shui)(shui)量(liang)(liang)一般(ban)不(bu)(bu)宜過(guo)大(da)，其(qi)用(yong)(yong)(yong)(yong)(yong)(yong)量(liang)(liang)以能(neng)將給(gei)(gei)(gei)料(liao)(liao)口(kou)的(de)(de)(de)(de)原(yuan)料(liao)(liao)全總(zong)潤(run)濕(shi)為限，對(dui)于(yu)(yu)煤(mei)用(yong)(yong)(yong)(yong)(yong)(yong)跳(tiao)(tiao)汰(tai)(tai)機(ji)，沖水(shui)(shui)(shui)(shui)量(liang)(liang)約(yue)占水(shui)(shui)(shui)(shui)量(liang)(liang)的(de)(de)(de)(de)20%到(dao)30%，對(dui)于(yu)(yu)礦用(yong)(yong)(yong)(yong)(yong)(yong)跳(tiao)(tiao)汰(tai)(tai)機(ji)，給(gei)(gei)(gei)礦水(shui)(shui)(shui)(shui)按濃度(du)(du)計算一般(ban)不(bu)(bu)超過(guo)20%-25%。篩(shai)下(xia)水(shui)(shui)(shui)(shui)對(dui)于(yu)(yu)空(kong)(kong)氣(qi)(qi)(qi)脈(mo)動(dong)跳(tiao)(tiao)汰(tai)(tai)機(ji)，其(qi)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)主要(yao)是(shi)補充篩(shai)下(xia)水(shui)(shui)(shui)(shui)量(liang)(liang)的(de)(de)(de)(de)短缺，減(jian)(jian)(jian)小跳(tiao)(tiao)汰(tai)(tai)室和(he)空(kong)(kong)氣(qi)(qi)(qi)室之(zhi)間在(zai)工作(zuo)(zuo)(zuo)是(shi)液位差(cha)，從而(er)增(zeng)加(jia)了(le)空(kong)(kong)氣(qi)(qi)(qi)室內壓縮(suo)的(de)(de)(de)(de)有效(xiao)壓力(li)，篩(shai)下(xia)頂水(shui)(shui)(shui)(shui)所(suo)形成的(de)(de)(de)(de)上升流速很小，約(yue)在(zai)0.5-1.scm/的(de)(de)(de)(de)范圍內，不(bu)(bu)會明顯地改變(bian)脈(mo)動(dong)水(shui)(shui)(shui)(shui)流上升和(he)下(xia)降的(de)(de)(de)(de)流速，但由(you)于(yu)(yu)它減(jian)(jian)(jian)小了(le)跳(tiao)(tiao)汰(tai)(tai)室的(de)(de)(de)(de)空(kong)(kong)氣(qi)(qi)(qi)室之(zhi)間的(de)(de)(de)(de)液位差(cha)，增(zeng)大(da)了(le)壓縮(suo)空(kong)(kong)氣(qi)(qi)(qi)的(de)(de)(de)(de)壓力(li)效(xiao)應，故使(shi)(shi)脈(mo)動(dong)水(shui)(shui)(shui)(shui)流上升時(shi)提(ti)早開始，下(xia)降時(shi)提(ti)前(qian)結束，因(yin)而(er)加(jia)大(da)了(le)上升水(shui)(shui)(shui)(shui)流的(de)(de)(de)(de)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)，減(jian)(jian)(jian)弱下(xia)下(xia)降水(shui)(shui)(shui)(shui)流的(de)(de)(de)(de)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)，加(jia)大(da)篩(shai)下(xia)預(yu)水(shui)(shui)(shui)(shui)的(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)量(liang)(liang)，提(ti)高床層(ceng)松(song)散度(du)(du)，減(jian)(jian)(jian)弱吸(xi)(xi)啜(chuo)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)和(he)細粒物料(liao)(liao)的(de)(de)(de)(de)透篩(shai)，空(kong)(kong)氣(qi)(qi)(qi)脈(mo)動(dong)跳(tiao)(tiao)汰(tai)(tai)洗(xi)煤(mei)機(ji)的(de)(de)(de)(de)分(fen)選(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)水(shui)(shui)(shui)(shui)均循環使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)(yong)，其(qi)損失量(liang)(liang)應由(you)清(qing)水(shui)(shui)(shui)(shui)補加(jia)，在(zai)篩(shai)下(xia)頂水(shui)(shui)(shui)(shui)用(yong)(yong)(yong)(yong)(yong)(yong)量(liang)(liang)的(de)(de)(de)(de)分(fen)配(pei)上，段矸石(shi)段比(bi)第二(er)段中煤(mei)段為各(ge)(ge)段的(de)(de)(de)(de)各(ge)(ge)分(fen)室通常也是(shi)由(you)給(gei)(gei)(gei)料(liao)(liao)端(duan)到(dao)輕產物流依次(ci)減(jian)(jian)(jian)少(shao)，選(xuan)煤(mei)用(yong)(yong)(yong)(yong)(yong)(yong)空(kong)(kong)氣(qi)(qi)(qi)脈(mo)動(dong)跳(tiao)(tiao)汰(tai)(tai)機(ji)操作(zuo)(zuo)(zuo)時(shi)，風(feng)量(liang)(liang)和(he)水(shui)(shui)(shui)(shui)量(liang)(liang)的(de)(de)(de)(de)正確配(pei)合使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)(yong)，對(dui)分(fen)選(xuan)工藝指的(de)(de)(de)(de)好(hao)壞為重要(yao)，雖然在(zai)一定范圍內，加(jia)大(da)風(feng)量(liang)(liang)和(he)增(zeng)加(jia)頂水(shui)(shui)(shui)(shui)都(dou)能(neng)使(shi)(shi)床層(ceng)的(de)(de)(de)(de)松(song)散度(du)(du)提(ti)高，但風(feng)量(liang)(liang)加(jia)大(da)能(neng)強化下(xia)降期吸(xi)(xi)啜(chuo)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)，而(er)加(jia)大(da)頂水(shui)(shui)(shui)(shui)使(shi)(shi)吸(xi)(xi)啜(chuo)作(zuo)(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)(yong)減(jian)(jian)(jian)弱，因(yin)此，在(zai)實際跳(tiao)(tiao)汰(tai)(tai)洗(xi)煤(mei)機(ji)操作(zuo)(zuo)(zuo)中只能(neng)根(gen)據工作(zuo)(zuo)(zuo)經驗和(he)具體操作(zuo)(zuo)(zuo)情況靈活運(yun)用(yong)(yong)(yong)(yong)(yong)(yong)，有人認(ren)為：寧多用(yong)(yong)(yong)(yong)(yong)(yong)風(feng)，不(bu)(bu)多用(yong)(yong)(yong)(yong)(yong)(yong)不(bu)(bu)，這(zhe)是(shi)由(you)于(yu)(yu)加(jia)大(da)項不(bu)(bu)可以減(jian)(jian)(jian)少(shao)精煤(mei)在(zai)矸石(shi)中的(de)(de)(de)(de)損失，但頂水(shui)(shui)(shui)(shui)過(guo)大(da)給(gei)(gei)(gei)全廠(chang)煤(mei)泥水(shui)(shui)(shui)(shui)系統造成沉重負擔，使(shi)(shi)煤(mei)泥在(zai)廠(chang)內回收的(de)(de)(de)(de)工作(zuo)(zuo)(zuo)加(jia)重。
