DUST FILTER FOR EMPLOYMENT IN EXPLOITATIONS THREATENED BY GASES.

摘要

Dry dust filter for use in gas-threaded farms, especially in mining and in the construction of underground tunnels with a housing (2) consisting of sheet metal or a similar material, conductor of electricity, in which they are arranged one or more filter elements (10) that receive the dust and through which a stream of air containing dust circulates, which have a filter material (12) that retains the dust and acts as a conductor of electricity and / or are configured in a corresponding manner, characterized in that a gas-impermeable seal (15) is provided between the housing (2) and the edge (11) of the filter element (10), which hinders or prevents the exit of harmful substances from the housing (2), in the form of an elastic sealing cord and in which the electrically conductive filter material (12) is connected to an electric conductor (16) in the form of a copper cord (25) in several places conductively with the filter material (12), which is connected to the housing, eluding the elastic seal (15), so that from the inner side (17) from the edge (11) of the filter element (10) a conductive connection is established with the housing frame (14) which is made of metal.