At the heart of the units is the so-called filter head, in which the dedusting process is implemented and where the filter bags are suspended. In a pulse-jet filter system there are the compressed air tanks, the control valves and the control system in the filter head.
Modernisation of existing units
A dedusting unit consists mainly of steel structures (hoppers, railings and scaffolding) or durable mechanical parts such as screw conveyors. All these parts have to be manufactured again for a new unit and therefore an additional financial investment is necessary. It is also often the case that specific conditions locally are such that a new unit on the original site can only be installed with certain further financial involvement.
Münstermann supplies a well-proven and effective modification concept for a multitude of applications.
Tha actual modernisation task
The department responsible for dedusting engineering has its origins from two pioneers companies of the branch: Standard Filterbau and Lüscher Filter, which have been taken over by Münstermann. Based on the large number of units on the ground Münstermann has developed a renewal process, in which an old dedusting unit can be easily converted into a modern pulse-jet system. In recent years, Münstermann has collected a great deal of experience in this area and has not restricted itself to the modification of its own units but has in the past years modified almost all the other well-known makes of pulse-jet dedusting units.
At the start of the modification work the suction air pipe system, the clean air exhaust system and the fan fitted to the existing unit have to be examined with regard to their usability. This is followed by the measurement of the filter head to establish the dimensions of the flanges for the connection to the filter base body. When converting to a pulse-jet filter, the old filter head is removed from the filter housing and replaced by a new pulse-jet filter head. Münstermann supplies a flange set for welding to the old filter body so that the old filter housing and the new filter head fit exactly to one another.
The clean air behind the filter is routed via a new clean air pipe to the existing fan. The raw gas piping with the original suction points can very often remain without modification. The new filter head is set up in a flexible way and is transportable in individual filter head modules to the site of assembly. With regard to the often quite inaccessibly installed filters in the production hall a modular design like this is of great importance for the assembly. In addition, the modification of existing pulse-jet units to the modern tank system with integrated pass through valves is possible, which offers considerable savings of compressed air.
