氣動隔膜(mo)泵利用(yong)壓縮空氣做為動力源,是(shi)一種氣動式正向(xiang)位移的(de)自吸泵,在國(guo)內泵類(lei)產(chan)品中屬的一種泵類(lei)產(chan)品,是一種新型(xing)的輸送機械(xie)。
氣動隔膜泵在未自吸前初次泵(beng)動(dong)之流動(dong)模式。
空(kong)氣經由氣閥壓(ya)縮(suo)進(jin)入膜片(pian)A之背(bei)面,由膜片(pian)擠(ji)壓(ya)液室。此(ci)種以空(kong)氣驅動(dong)的方式可免除一般(ban)活塞驅動(dong)之機械應(ying)力,從而顯著地延長膜片(pian)的壽命(ming)。在(zai)壓(ya)縮(suo)空(kong)氣將膜片(pian)A推離中心體時(shi),另一端之(zhi)膜片B同時(shi)被連(lian)結之(zhi)中心(xin)軸拉向中心(xin)體(ti),此時(shi),膜片B背面之(zhi)空氣由出口(kou)排放(fang)到泵體(ti)外。如此使B室形成真空狀態,因而(er)能(neng)靠外面大氣壓力之作(zuo)用將(jiang)流體由入口支管將(jiang)閥球推(tui)離閥座使流體能自由地進入B室(shi)直至填滿。
圖(tu)2:當受空(kong)氣(qi)(qi)擠(ji)(ji)(ji)壓(ya)(ya)之膜片(pian)(pian)A達到其位移(yi)極*,空(kong)氣(qi)(qi) 閥(fa)(fa)(fa)(fa)會將空(kong)氣(qi)(qi)引導至膜片(pian)(pian)B之背面,同(tong)樣形(xing)成擠(ji)(ji)(ji)壓(ya)(ya)力而使其推(tui)離中(zhong)心體(ti),同(tong)時(shi)將連結的(de)膜片(pian)(pian)A拉回(hui)中(zhong)心體(ti),此(ci)時(shi)膜片(pian)(pian)B之驅動(dong)所產生的(de)液壓(ya)(ya)將入口(kou)閥(fa)(fa)(fa)(fa)球推(tui)回(hui)閥(fa)(fa)(fa)(fa)座(zuo),同(tong)時(shi)將出口(kou)閥(fa)(fa)(fa)(fa)球推(tui)離閥(fa)(fa)(fa)(fa)座(zuo)使流(liu)體(ti)能(neng)被(bei)擠(ji)(ji)(ji)壓(ya)(ya)而從出口(kou)排出泵體(ti) 外。膜片(pian)(pian)A被(bei)拉回(hui)中(zhong)心體(ti)這個動(dong)作使A室形(xing)成真(zhen)空(kong)狀態,因而能(neng)靠大氣(qi)(qi)壓(ya)(ya)力作用將流(liu)體(ti)由入口(kou)支管將閥(fa)(fa)(fa)(fa)球推(tui)離閥(fa)(fa)(fa)(fa)座(zuo)而進入A室直至填滿(man)。
通過(guo)在中(zhong)心(xin)軸(zhou)兩(liang)端固定的兩(liang)片隔膜的左右(you)(you)水平運動將材(cai)(cai)(cai)料(liao)(liao)壓(ya)送(song)(song)出去。在圖1的左側(ce)空(kong)(kong)氣(qi)室(shi)(shi)b中(zhong),送(song)(song)入(ru)(ru)壓(ya)縮(suo)空(kong)(kong)氣(qi)使中(zhong)心(xin)軸(zhou)向(xiang)(xiang)左方(fang)向(xiang)(xiang)移動。材(cai)(cai)(cai)料(liao)(liao)室(shi)(shi)B中(zhong)的材(cai)(cai)(cai)料(liao)(liao)被(bei)壓(ya)出,同(tong)(tong)時材(cai)(cai)(cai)料(liao)(liao)室(shi)(shi)A吸(xi)入(ru)(ru)材(cai)(cai)(cai)料(liao)(liao)。當中(zhong)心(xin)軸(zhou)向(xiang)(xiang)左移動到行(xing)程(cheng)盡頭(tou)時,空(kong)(kong)氣(qi)交(jiao)換(huan)閥換(huan)向(xiang)(xiang),壓(ya)縮(suo)空(kong)(kong)氣(qi)被(bei)送(song)(song)入(ru)(ru)右(you)(you)側(ce)空(kong)(kong)氣(qi)室(shi)(shi)a,使中(zhong)心(xin)軸(zhou)向(xiang)(xiang)右(you)(you)方(fang)向(xiang)(xiang)移動。材(cai)(cai)(cai)料(liao)(liao)室(shi)(shi)A中(zhong)的材(cai)(cai)(cai)料(liao)(liao)被(bei)壓(ya)出,同(tong)(tong)時材(cai)(cai)(cai)料(liao)(liao)室(shi)(shi)B吸(xi)入(ru)(ru)材(cai)(cai)(cai)料(liao)(liao)。這樣的動作(zuo)往復進行(xing)材(cai)(cai)(cai)料(liao)(liao)就被(bei)連續(xu)的吸(xi)入(ru)(ru)和吐(tu)出。