GYW、GW型外濾筒式真空過濾機
 Outside  filtering drum permanent magnetic filter

國家行業標準JB/T2443

外濾筒式真空過濾機廣泛用于選礦、冶金、化工造紙等部門，對經浮選后的有色金屬（銅、鋅、鉛、鎳……）和非金屬（硫、磷、滑石、螢石……）精礦、精煤等進行脫水，也可用于對不易沉淀的懸浮液進行固液分離。

Out side-drum vacuum filter is widely used in ore-processing,  metallurgical industry, chemical plant, paper industry and etc, for dewatering  floatation concentrates of non ferrous metals (such as copper, zinc, lead,  nickel and etc,) and concentrates of non metal (such as sulphur, phosphorus,  talcum, fluorite, coal and etc,) and can also be used for separating liquid and  soild in suspensoids which are not easy to be setted down.

結構：主要由轉鼓、槽子、分配頭、攪拌器、傳動裝置等主要部件組成。

Structure: This kind of  equipment is mainly composed of drum, trough, distribution head, blender, and  transmission device.

工作原理：過濾機操作時礦漿送入溶槽內，這時，槽內的礦漿由于受攪拌器攪拌而得保持懸浮狀態，圓盤轉動時，由于真空過濾機內部的真空，固體物料從礦漿內被吸到此時沉沒在盛有礦漿的槽里的這部份轉鼓外圓表面上。在該過濾機的表面處于真空下時，濾渣形成帶和脫水帶一直保持著。這時，粘掛在上面的物料開始被吸干，在轉鼓的繼續轉動下，出現濾渣刮取帶，在這里，由轉鼓內部的真空變為壓縮空氣，將濾渣吹下和將濾布濾孔吹通。為了能將過濾表面上的濾渣取下，要裝上一種特殊的刮刀。在轉鼓表面重新浸入礦漿前，過濾機表面又受真空作用。

Working  Principle: During the operation of the filter, the slurry is fed into the  trough. At this time, the slurry in the trough remains suspended as the result  of the stirring of the blender. When the disc rotates, due to the vacuum in the  vacuum filter, the solid materials are sucked from the slurry to the surface of  the excircle of this drum submerged in the tank containing slurry. When the  surface of the filter is exposed to vacuum, filter residual formation belt and  dewatering belt are always retained. At this time, materials sticking to it  begin to be sucked dry. When the drum continues to rotate, filter residual  scraping belt appears. Here the vacuum inside the drum changes into compressed  air. It blows down the filter residual and blow off through the filtration hole  of filter cloth. To remove the filter residual on the filtering surface, a kind  of special scraper shall be installed. Before slurry is reinfused to the  surface of the drum, the surface of the filter is again affected by vacuum.