Rotary vacuum filter working principle
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Scraper discharge is used if the desired separation requires high filtration rate or if heavy solid slurry is used or if the slurry is easy to filter to produce cake formation or if a longer wear resistance is desired for the separation of the mentioned slurry. A scraper blade, which serves to redirect the filter cake into the discharge chute, removes the cake from the filter cloth just before re-entering the vat. This is the standard drum filter discharge. Belt discharge is used if slurry with moderate solid concentration is used or if the slurry is easy to filter to produce cake formation or if a longer wear resistance is desired for the separation of the mentioned slurry. The products for this mechanism are usually sticky, wet and thin thus, requiring the aid of a discharge roll. The filter cloth is washed on both sides with each drum rotation while discharging filter cakes. High energy consumption by the vacuum pump.īasically there are five types of discharge that are used for the rotary vacuum drum filter such as belt, scraper, roll, string and pre coat discharge.
![rotary vacuum filter working principle rotary vacuum filter working principle](https://filtrationchina.com/images/product/rotary-drum-filter/rotary_drum_filter01.jpg)
#ROTARY VACUUM FILTER WORKING PRINCIPLE CRACK#
The cake tends to crack due to their air drawn through by the vacuum system, so that washing and drying are not efficient.The discharge cake contains residual moisture.Besides the drum, other accessories, for example, agitators and vacuum pump, vacuum receivers, slurry pumps are required.Due to the structure, the pressure difference is theoretically limited to atmospheric pressure (1 bar), and in practice somewhat lower.
![rotary vacuum filter working principle rotary vacuum filter working principle](https://i.ytimg.com/vi/K5MEuHf4xSU/maxresdefault.jpg)