
Equipment designed to achieve the dust separation in industrial processes, guaranteeing emission to the atmosphere under the allowed conditions for dust-free environments.
Its design consists of a metallic cylinder and a cone at its base.
Equiped with filter elements based on sleeves or cartridges.
These elements are placed radially aligned, being fixed to a structure supported by the cylindrical body that will separate it in two zones: the upper part, or clean air chamber, and the lower one or powdery air chamber.
The flow is ducted into the cylindrical body of the filter, tangentially at the lowest part of the sleeves or cartridges and ascends through them to the clean air chamber, retaining the solid particles in the sleeves or cartridge. The filtered air will be ducted to the fan or released to the atmosphere.

THE FILTERING ELEMENTS SHOULD BE SUBMITTED TO CLEANING PROTOCOLS IN ORDER TO AVOID FILTERING SURFACE TO BE COLLATED
The most common cleaning method is applying a strong stream of compressed air, in a short time to the inside of the filter elements, so that the particles that were attached to it are detached and decanted by gravity to the cone of the filter.
It is possible to program the frequency and duration of the compressed air impulses through an automatic sequence control that will be governed according to the degree of clogging of the filtering surface.
The filtering surface of the equipment can be a textile component, known as sleeves filter or synthetic fibrous material, known as cartridge filter.
Types of filtering surface


Textile component filters
→ Its mission is to retain the solid particles of the fluid.
→ It consists of a set of textile elements that are woven in tubular form and arranged in vertical position.
→ Each element is fixed to a structure, also of tubular shape that is supported by the walls of the filter.
Functioning
The flow with dust particles, once it enters the filter, is forced to cross the textile surface where the microparticles are retained, achieving a dust-free current at the output of the equipment.
The particles that have remained adhered to the filter medium, will be detached by means of the compressed air drive that the automatic cleaning system offers. They will be decanted by gravity in the cone of the clindrical body.
Automatic cleaning is programmable depending on the characteristics of each product.
There are different types of filtering fabric, whose use will depend on:


cartridge filters
→ Its mission is to retain the flow solid’s particles.
→ It consists of a set of tubular elements of non-textile material that are arranged in a vertical position.
→ Materials: cellulose, fiberglass, polyester, polypropylene, etc.
→ Each element is supported to a structure that is fixed to the filter’s walls.
→ The filtering surface is arranged in folds in order to provide a larger surface to filter.
The flow with dust particles is forced to cross the filtering surface, where the microparticles are retained, achieving a dust-free current at the output of the equipment.
This type of filter surfaces is capable of controlling microparticles with diameters of 10 μm and 2.5 μm, with an operating efficiency of 99.99%, according to EPA, 1998b.
The particles that have remained adhered to the filter medium, will be detached from its surface by activating the pulsating jet of compressed air and decanted by gravity in the cone of the clindrical body.
TO TAKE INTO ACCOUNT IN THE SELECTION OF THE FILTERING ELEMENT
→ Product’s chemical and physical characteristics composition
→ Operating temperature
→ Flow velocity
→ Gas moisture content
→ Pressure drop
→ Cleaning method to be used
