Device to separate oversized particles during field powder transfer

A method for filtering fine powder material using a vibratory screening device, comprising the steps of:

• positioning the vibratory screening device adjacent to a collection receptacle;
• loading a powder material onto a screen located within the vibratory screening device;
• activating a vibration mechanism to induce a vibratory motion in the screen to oscillate the screen to filter oversized particles from the fine powder material;
• collecting the filtered fine powder material in a collection receptacle;
• and
• discharging the oversized particles from the screen;

A mobile screening device for filtering a polyacrylamide powder comprising:

• a central body;
• a downspout attachment connected to the central body;
• a set of downspout latches connected to the downspout attachment;
• the downspout attachment adapted to receive the polyacrylamide powder from a feeder conduit;
• the downspout attachment removably connected to the feeder conduit via the downspout latches;
• wherein the downspout attachment is axially aligned with the feeder conduit;
• a mesh screen positioned downstream the feeder conduit and downstream the downspout attachment;
• an air attachment extending through the central body for connecting a pneumatic motor to the screen.
• the pneumatic motor configured to oscillate the mesh screen from about 20 Hz to about 60 Hz to filter oversized particles from a fine polyacrylamide powder;
• a funnel positioned downstream the screen;
• the funnel configured to convey the fine polyacrylamide powder downstream to a first collection receptacle adjacent the mobile screening device;
• and
• wherein the mobile screening device is capable of being transported to a position adjacent a second collection receptable.