Electrostatic sieving apparatus

Classifying – separating – and assorting solids – Electrostatic – Free fall type particle charging

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

209129, 209380, B03C 700

Patent

active

054840619

ABSTRACT:
An apparatus for classifying particles by size comprising: a source of direct potential having first and second terminals, a sieve electrode connected to the first terminal, a solid electrode connected to the second terminal. Particles are fed to a transfer point located between the sieve electrode and the solid electrode such that the particles disperse and oscillate between the sieve electrode and the solid electrode whereby smaller particles pass through the sieve electrode. The new equipment has five adjustable operating parameters, screen angle, spacing between electrodes, field strength, powder input rate and electrode taper. The taper between electrodes is usually small, 0.3 to 0.4 of a degree with the larger opening at the top. The taper is used when the input powder is fine and the particle size differential is skewed either towards the high or low side. The purpose of the taper is to reduce the possibility of arcing at the input as well as to control dispersion of the particles. The solid electrode may be flat, or contoured in side-to-side sine wave, step or sawtooth patterns, or in dimples across the surface, to increase the oscillation of particles. A plurality of parallel wire electrodes may be added perpendicular to the long axis of the sieve and solid electrodes at the same potential as the solid electrode in order to increase turbulence and particle oscillation.

REFERENCES:
patent: 2361946 (1940-08-01), Johnson et al.
patent: 2707556 (1955-05-01), Gear et al.
patent: 2803344 (1954-11-01), Morrison
patent: 2848108 (1958-08-01), Brastad et al.
patent: 3247960 (1966-04-01), Brastad
patent: 3249225 (1966-05-01), Stuetzer et al.
patent: 3346110 (1967-10-01), LaFranca, Jr. et al.
patent: 3635340 (1972-01-01), Dunn
patent: 4071169 (1978-01-01), Dunn
patent: 4172028 (1979-10-01), Dunn
patent: 4229285 (1980-10-01), Wild

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electrostatic sieving apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrostatic sieving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic sieving apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-303790

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.