New book ‘102 Things to Do with a Hole in the Ground‘ spotlights global reclamation projects
Stories of reinvented coal mining regions, regenerated communities and rebuilt ecosystems are told in a new book published this month.
A more efficient way to install filter cloths on a recessed chamber plate
The fabrication of recessed chamber filter cloths requires the installation of grommets around the perimeter and the use of tie wraps to hold the cloth in place. An alternate method is to sew Velcro down the length and across the top. There is a connecting collar for the two pieces of media.
CURRENT TECHNOLOGY
Both of these methods are costly to manufacture and time consuming to install. The connecting “ barrel neck” for the two pieces of media is made with impervious fabric, rubber or a flexible plastic and is either sewn or bonded to the media. The media is made with woven fabric or needled punched felt. Installing these filter cloths is by feeding one side through the feed hole so that each side can be stretched over the plate. Once the cloth is in place it is tied together with tie wraps through the grommets or fastened with Velcro.
BOXED FORM-MAXX FILTER MEDIA
The R/P filter cloth made with FORM-MAXX FILTER MEDIA is made in a two piece design. Each piece is made in the shape of a box with an integral molded extended center core. One core is slightly smaller in diameter than the other to allow them to mesh together forming the “barrel neck”. The barrel neck is coated with a rubber or urethane compound to make it impervious and forms a seal to prevent leakage. The side with the smaller diameter core is placed over the feed side (head) of the plate with the core extending through the feed hole.
The larger size is place over the exit (tail) side of the plate through the feed hole and meshing over the smaller diameter core.
Using FORM-MAXX FILTER MEDIA eliminates the need for the grommets and tie wraps or Velcro by forming the media to fit the shape of the chamber and boxing in the plate.
ADVANTAGES OF USING FORM-MAXX FILTER MEDIA
• ELIMINATES THE NEED FOR GROMMETS AND TIE WRAPS OR VELCRO
• EASIER INSTALLATION OF THE CLOTH THROUGH THE FEED HOLE
• MEDIA IS MOLDED TO EXACT SHAPE OF CHAMBER NO STRETCHING OR CREASING
• MEDIA RESTS ON TOP OF PIPS AND DOES NOT COLLAPSE INTO THE GROOVES
• FINE FILTRATION WITH HIGH FLOW RATES
• MEDIA AVAILABLE IN PP AND PE FROM 1-50 CFM RATINGS
• LARGE COST SAVINGS COMPARED TO SEWN CLOTHS
• REDUCED TIME AND MAINTENANCE FOR CHANGE OUTS.
TWO PIECE MOLDED FELT CGR FILTER CLOTH
A more efficient way to install filter cloths on a CGR filter plate
The method to fabricate filter cloths for the CGR recessed filter plate consists of a sewn in cord around the perimeter with a connecting collar for the two pieces of filter media. To install these cloths with this design is very labor intensive with a high risk of damage to the cloth.
CURRENT TECHNOLOGY
To install these filter cloths that are made with either a woven filter media or a needled punched felt media is by feeding one side through the center hole of the plate so each filter cloth can be stretched over the plate. The connecting “barrel neck” is made from woven impervious fabric, rubber, or a flexible plastic which is either sewn or bonded to the media. Once this barrel neck is in place the cloth is aligned and the cord hammered into the caulking grove with a wedge and hammer or a pneumatic hammer designed for caulking in round cords. This method is very time consuming and if the wedge hits the cloth media it will cause damage and render the cloth unusable.
FORM-MAXX FILTER MEDIA
The CGR filter cloth made with FORM-MAXX FILTER MEDIA is made in a two piece design. Each piece is made with a rounded molded edge with an integral molded extended center core. One core is slightly smaller in diameter than the other to allow them to mesh together forming the “barrel neck”. The barrel neck is coated with a rubber or urethane compound to make it impervious and forms a seal to prevent leakage.
The side with the smaller diameter core is placed over the feed side of the chamber plate with the core extending through the center hole of the plate.
The larger core is placed over the exit side of the plate with the center core extending through the center hole and meshing over the smaller diameter side.
Using FORM-MAXX FILTER MEDIA eliminates the need for the caulking process by forming the media to fit the shape of the chamber. The formed edges snap into the groove which is held in place by tension. These grooves can be filled with urethane to maintain the tension for sealing.
ADVANTAGES BY USING FORM-MAXX FILTER MEDIA.
• ELIMINATES THE CAULKING PROCESS
• EASIER INSTALLATION OF THE CLOTH THROUGH THE FEED HOLE
• MEDIA IS MOLDED TO EXACT SIZE OF CHAMBER NO STRETCHING REQUIRED
• MEDIA WILL NOT CREASE AFTER INSTALLATION
• MEDIA RESTS ON TOP OF PIPS AND DOES NOT COLLAPSE INTO THE GROOVES
• LARGE COST SAVINGS COMPARED TO SEWN CLOTHS
• REDUCED TIME AND MAINTENANCE FOR CHANGE OUTS
• FINE FILTRATION WITH HIGH FLOW RATES
• MEDIA AVAILABLE IN PP AND PE FROM 1-50 CFM RATINGS
BY: Gilbert A. Craig
