Discharge mechanism of Separator- Alfa Laval Separator

Sludge discharge i s performed as follows. Under centrifugal force acting on pilot valve, packing part is sealed and operating water i s filled in water pressure chamber for closing bowl. Under pressure of the operating water, main cylinder is pushed up to seal main seal ring for purifying operation.

On the other hand, though operating water for closing bowl is constantly supplied to the water pressure chamber for closing bowl, operating water within the water pressure chamber for

closing bowl rotates with the bowl, and therefore pressure generated under centrifugal force and head pressure of operating water to be supplied are balanced to cause water level to be stable at a certain position.

 Operating water for opening bowl is fed for a certain time to the water pressure chamber for opening bowl. Part thereof passes through, but remaining water is filled in the water pressure

Chamber for opening bowl. Under pressure of the operating water, pilot valve slides in counter radial direction.

Seal in the packing part is broken and operating water for closing bowl flows out of the bowl.

If operating water for closing bowl passes through, there is no more force pushing up the main cylinder and the main cylinder i s pushed down by liquid pressure within the bowl.

Seal in the main seal ring part is broken and sludge is instantly discharged out of the bowl.

On completion of sludge discharge, operating water for closing bowl is delivered to the water pressure chamber for closing bowl.

If operating water is filled therein, main cylinder is pushed up to seal the main seal ring part. At this time the packing part is already sealed.

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