KAAP、Reishauer、 Liebherr、 Kingelnberg、天津二机等)，我司专供匹配此系统的过滤纸、过滤带，欢迎来电咨询！Method of operation
|| Incoming impurities
|| Flushing unit|
|| Top chamber
|| Continuous plastic belt|
|| Bottom chamber
|| Peeling roll|
|| Discharge of cleansed material
|| Sludge discharge|
Soiled medium is transported from the processing machine into the fouled tank section of the HOFFMANN pressure belt filter. A filter pump accommodates the soiled fluid and routes it into the sealed, closed filter chamber (space between the top chamber and the continuous plastic belt) of the pressure belt filter. The fluid flows through the filter belt and the particles of impurities are trapped on the filter belt, where they form the filter cake. The cleansed fluid is routed to the clean tank section. Machine supply pumps transport the cleansed fluid back to the processing machine.
As the level of impurities (filter cake) rises on the filter belt, the differential pressure in the filter chamber increases. The regeneration process is initiated when the maximum differential pressure is reached, or after a defined time. The fluid inlet is closed and the filter cake blown dry using compressed air. After that, the filter chamber opens automatically and the filter cake is moved out of the chamber on the continuous filter belt and falls into a sludge box.
Upon request, or if required, the cleansed medium is also moderated using a HOFFMANN chilling unit in accordance with plant-specific requirements.
very high throughput volume
easy, local or central installation
filtration without the use of filtration aids
fully automatic, maintenance-friendly operation
continuous supply of your loads with cleansed medium
good filter cake build-up thanks to high differential pressure
high level of cleansing
can be used for fine and clear filtration as a precoat filter with apportionment of filtration aids
high level of process reliability
Opening and closing of the HOFFMANN HKF-type pressure belt filters is performed by two pneumatic cylinders. These cylinders also keep the pressure belt filter closed leak-tight on a loss of pressure.
Depending on the task at hand, the following options are available for filtration:
continuous plastic belt
continuous plastic belt, coated with filtration aids (e.g. cellulose) via a precoat system