Scraper-type Vacuum Rotary Drum Filter

刮刀式真空转鼓过滤机属普通开式、外滤面、后（或下）加料、刮刀卸料（以下简称过滤机）。真空转鼓过滤机通过与转鼓同步运转的滤布，在真空（负压）作用下实现悬浮液的固液分离，靠压缩空气反吹并经刮刀装置。

卸除滤饼在由压缩空气反吹实现滤布的再生。具有自动化程度高、操作连续等特点，被广泛用于化工、制药、尾矿、环保等行业。

该过滤机适于过滤固相浓度及比重适中，粒度较均匀的悬浮液。下述情况，适于该过滤机：

A、在两分钟的过滤时间内所获得的滤饼厚度大于5mm悬浮液。

B、固相比重及粒度适中，致使固相沉降速度小于12mm/悬浮液。

C、粘度较小、无胶质不易堵塞滤布，而使滤布较容易再声的悬浮液。

D、在转鼓内相当真空度下，过滤温度小于悬浮液气化温度。

E、滤液内允许剩有少量固相颗粒。

F、处理量大，并要求连续操作的场合。

The scraper-type vacuum drum filter is a common open type, outer filter surface, rear (or lower) feeding, scraper discharge (hereinafter referred to as the filter).

The vacuum drum filter realizes the solid-liquid separation of the suspension under the action of vacuum (negative pressure) through the filter cloth running synchronously with the drum, and it is blown back by compressed air and passed through the scraper device.

The unloaded filter cake is blown back by compressed air to realize the regeneration of the filter cloth. With the characteristics of high degree of automation and continuous operation, it is widely used in chemical, pharmaceutical, tailings, environmental protection and other industries.

This filter is suitable for filtering suspensions with moderate solid phase concentration and specific gravity and relatively uniform particle size. The following conditions are suitable for this filter:

A. The thickness of the filter cake obtained in the filtration time of two minutes is greater than 5 mm suspension.

B, the solid specific gravity and moderate particle size make the solid phase sedimentation velocity less than 12mm/suspension.

C, a suspension with low viscosity, no glue, which is not easy to block the filter cloth, and makes the filter cloth easier to re-sound.

D, the filtration temperature is lower than the vaporization temperature of the suspension under a considerable vacuum in the drum.

E, a small amount of solid particles are allowed in the filtrate.

F, large processing capacity, and occasions requiring continuous operation

Technical Parameters :