Vertical peeler centrifuges
Vertical peeler centrifuges
Pharma design - Series V 800 - 1250 BP
Vertical peeler centrifuges type V 1000 - 1250 BP in cGMP execution are mainly used in the pharmaceutical industry. The process housing opens and closes automatically, thus enabling the complete inspection of all components in the process area. Cleaning is carried out by means of an effective, fully automated CIP system and it is complete with the flooding of the process enclosure if necessary.The GMP and specification compliant documentation ensures optimum qualification.Special properties for the benefit of the customer
- Small footprint
- cGMP compliant
- Automatic opening, respectively closing of the process casing
- Optimised product discharge
- Automatic CIP cleaning
- Easy accessibility of all machinery parts in contact with the productFilling
The suspension that is to be separated is filled into the horizontal, overhung perforated basket at a pre-selected loading speed. As a result of the centrifugal force, the solid particles settle on the filter fabric on the basket shell.
The solids are retained by the filter fabric, suspension fluid flows through the forming filter cake, including the filter fabric and leaves the perforated basket through bore-holes in the basket sleeve.
During filling, the fluid level in the basket and the growth of the filter cake are controlled by sensors. Upon reaching the desired filter cake height the filling process is stopped automatically.
Intermediate spin
Depending on the product, a filling process will be interrupted by intermediate spinning with increased speed, in order to free filling volume in the basket and continue the filling process.
Depending on the filtration reaction of the product, intermediate spinning will be repeated several times.
Washing
As soon as the suspension fluid has been centrifuged, the washing the solids in the basket process is started. During this phase the washing fluid is evenly distributed via a suitable washing pipe (nozzle pipe or orifice-type sprayer) throughout the whole length of the basket.
as a result of the centrifugal force, the washing fluid penetrates the filter cake, displaces the still sticking suspension fluid and leaves the basket in the same way as the suspension fluid during filling.
Final spin
In order to separate the fluid from the filter cake the basket is generally accelerated to the maximum allowable speed and kept constant at this speed. Kinetics of the spinning process depend on the solids and fluid parameters, the height of the filter cake and, naturally, the centrifugal force acting upon the fluid to be separated.
Kinetics of the hydro-extraction process depend on the solids and fluid parameters, the height of the filter cake and, naturally, the centrifugal force acting upon the fluid that is to be separated.
The residual humidity in the filter cake decreases over time under the constant centrifugal force and asymptotically it approaches a theoretical limit.
