Compact belt filter - Mode of operation
1. The soiled liquid flows into the inlet box via an inlet connection
mounted on one of the two side walls.
2. The medium is braked with an integrated inlet brake so that it
slowly flows into the recess formed by the filter fleece and
carrier strap.
3. The dirt particles are deposited on the filter fleece and form the
filter cake.
4. Following saturation of the filter fleece, the liquid level rises to
the maximum height.
5. As soon as this level is reached (float switch has floated up),
the geared motor is switched on with a level switch to pull in
new filter fleece (from a roll).
6. As a result, the liquid level drops again and a new filtration
process can begin.
7. The used filter fleece is pushed out of the filtration chamber
together with the dirt particles and then falls into a sludge box
located outside.
Level switch Max. alarm/feed pump OFF (integrated in filter)
As soon as this level is reached (float switch has floated up), the feed pump must be switched off. The pump should then be blocked until the actual float switch for the filter drive has dropped down again and has switched off the geared motor.
Limit switch for filter fleece shortage
The (decreasing) diameter of the fleece roll is monitored with this limit switch. A signal is output beginning at an adjustable point. Then the filter drive must be switched off and the roll replaced (as you use a PLC controller, the output "Please change fleece roll on Filter No. ... " would be very helpful here).
Pushbutton for manual filter fleece draw-in
The pushbutton installed next to the terminal box (surface-mounted housing) is always ready. If a new fleece roll has been inserted, this is used to draw it into the filter drum. The geared motor for the filter drive runs as long as the pushbutton is pressed. If it is released, the motor stops (dead man's circuit).
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