最后还有从回收重油方法改进而来的机械分离器，采用金属齿轮盘将油捞起，然后采用分离机将油分离出来放到储罐中。

Finally there are mechanical skimmers - ideal for retrieving heavy oils - which use metal tooth discs, grab buckets and drum separators to remove the oil then pump it into a tank.

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过滤器分为机械式分离器、微粒分离器、油蒸气分离器等类型。

Filter are divided into mechanical separator, particle separator, oil steam separator type etc.

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机械式分离器一般不需要维护，也不需要更换。

Mechanical separator generally do not need to maintain, also do not need to change.

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