Method for operating a surface treatment installation, set of filter modules and surface treatment installation

1. A method for operating a surface treatment installation comprising the steps of:

selecting at least one one-way filter module from a set of one-way filter modules based on an overspray type requiring absorption in a coating booth where the at least one one-way filter module is to be used, wherein each one-way filter module in the set of one-way filter modules has

a housing having an identical module inlet and an identical module outlet, and

a filter unit, wherein the set of one-way filter modules includes at least two filter modules having different filter units;

inserting the at least one one-way filter module in the coating booth;

taking up and carrying overspray produced in the coating booth by an air stream to one or more one-way filter modules in which overspray is separated, wherein, once a limit loading with overspray is reached, a one-way filter module is exchanged for an empty one-way filter module, wherein

each filter unit comprises filter structures which define a flow pathway for the overspray carried through the filter housing, wherein the at least two filter modules having different filter units have

filter structures having a different shape, and/or

a different follow pathway for the overspray carried through the filter housing.

2. The method according to claim 1 , wherein the rheological characteristics of the overspray and/or the particle size distribution of the overspray are taken into consideration in the selection of the one-way filter module.

3. A set of filter modules for use in a surface treatment installation having a coating booth, the set of filter modules comprising:

a) various filter modules, which are formed as exchangeable one-way units with a module housing and a filter unit having filter structures defining a flow pathway through which booth air laden with overspray can be conducted;

and

b) the module housings of the various filter modules have same-connection module inlets;

c) the module housings of the various filter modules have same-connection module outlets;

d) the filter structure and/or the flow pathway of at least two filter modules of the various filter modules are different.

4. The set of filter modules according to claim 3 , wherein the set comprises at least one filter module that is formed as a separation filter.

5. The set of filter modules according to claim 3 , wherein the set comprises at least one filter module that is formed as an inertial filter.

6. The set of filter modules according to claim 3 , wherein the set comprises at least one filter module that is formed as a combination filter with an inertial part and a separation part.

7. The set of filter modules according to claim 5 , wherein the inertial filter is formed as a cyclone.

8. The set of filter modules according to claim 3 , wherein the set comprises at least one filter module with a plurality of filter elements, which are arranged in such a way that a flow labyrinth is formed between the filter elements.

9. The set of filter modules according to claim 8 , wherein the set comprises at least one filter module, in which filter lamellae, filter hollow tubes, filter rods, compartment structures or chamber structures are present as filter elements.

10. The set of filter modules according to claim 9 , wherein the filter elements are formed as filter lamellae with a curved or V-shaped cross section.

11. The set of filter modules according to claim 3 , wherein the set comprises at least one filter module in which a plurality of filter stages is present, which follow one another in the flow direction of the booth air.

12. An installation for the surface treatment of objects, comprising:

a) a coating booth, through which an air stream can be conducted that takes up any overspray produced and carries it away;

b) a separation device, to which this air stream can be supplied and where a majority of at least solids in the overspray are separated from the overspray,

wherein

the separation device including a set of filter modules according to claim 3 .

13. The set of filter modules according to claim 6 , wherein the inertial part of a respective filter module is formed as a cyclone.