Filter module and device for the separation of overspray, and plant having the same

Abstract

A filter module for the separation of overspray from overspray-laden cabin air of coating plants, in particular of painting plants, having a filter housing which delimits a filter chamber through which overspray-laden cabin air can be conducted in a main flow direction. A plurality of separation elements composed of a separation material which is permeable to the cabin air is arranged in the filter chamber such that a flow labyrinth is formed between the separation elements. A separation device and a plant for coating articles having such a filter module is also provided.

1 . Filter module for the separation of overspray from the overspray-laden booth air of coating plants comprising: a filter housing which delimits a filter space through which overspray-laden booth air can be conducted in a main flow direction,
 wherein   a multiplicity of separation elements composed of a separation material which is permeable to the booth air are arranged in the filter space such that a flow labyrinth is formed between the separation elements.   
     
     
         2 . Filter module according to  claim 1 , wherein filter lamellae, filter sleeves, compartmented structures or chambered structures are present as separation elements. 
     
     
         3 . Filter module according to  claim 2 , wherein the separation elements are formed as filter lamellae in the form of separation mats. 
     
     
         4 . Filter module according to  claim 2 , wherein the separation elements are formed as filter lamellae with a V-shaped or arcuate cross-section. 
     
     
         5 . Filter module according to  claim 1  wherein the separation material is a fibre material. 
     
     
         6 . Filter module according to  claim 5 , wherein the separation material is a nonwoven material. 
     
     
         7 . Filter module according to  claim 1  wherein the separation elements are arranged in filter stages which follow one another in the main flow direction. 
     
     
         8 . Filter module according to  claim 7 , wherein a material density of the separation elements in the filter stages increases in the main flow direction. 
     
     
         9 . Device for the separation of overspray from the overspray-laden booth air of coating plants having at least one filter module through which overspray-laden booth air can be conducted and in which overspray is deposited, wherein the at least one filter module is a filter module according to  claim 1 . 
     
     
         10 . Plant for coating comprising:
 a) a coating booth, in which coating material can be applied to the articles and through which can be conducted an air flow which takes up and carries off resulting overspray of the coating material;   b) a separation device, to which this booth air can be supplied and where a large part of at least the solids is separated from the overspray,   wherein   c) the separation device is formed according to  claim 9 .   
     
     
         11 . Filter module according to  claim 2  wherein the separation material is a fibre material. 
     
     
         12 . Filter module according to  claim 3  wherein the separation material is a fibre material. 
     
     
         13 . Filter module according to  claim 4  wherein the separation material is a fibre material. 
     
     
         14 . Filter module according to  claim 2  the separation elements are arranged in filter stages which follow one another in the main flow direction. 
     
     
         15 . Filter module according to  claim 3  the separation elements are arranged in filter stages which follow one another in the main flow direction. 
     
     
         16 . Filter module according to  claim 4  the separation elements are arranged in filter stages which follow one another in the main flow direction. 
     
     
         17 . Filter module according to  claim 5  the separation elements are arranged in filter stages which follow one another in the main flow direction. 
     
     
         18 . Filter module according to  claim 6  the separation elements are arranged in filter stages which follow one another in the main flow direction.