Self-contained filter assembly for magnetic deburring and polishing machine

1. A magnetic barrel tumbler comprising:

a motor;

a magnetic disc attached to the motor;

a plate positioned above the magnetic disc;

a tub positioned on top of the plate for receiving a solution, magnetic particles, and work pieces; and

a filter assembly positionable in the tub comprising:

a filter housing comprising an inlet and an outlet;

an impeller positioned inside the filter housing, wherein the impeller comprises a solid piece of material with an outer diameter, a concentric through hole, bores cylindrically spaced around a perimeter of the solid piece of material, and a plurality of slits extending from the outer diameter of the impeller to the concentric through hole;

a plurality of magnets each of which is positioned in one of the bores in the impeller combined to the impeller that magnetically couple the impeller to a rotating magnetic field created by the magnetic disc when rotated by the motor, wherein rotation of the magnetic disc rotates the impeller which draws the solution through the inlet of the filter housing and pushes the solution out a first filter and out the outlet of the filter housing.

2. The magnetic barrel tumbler of claim 1 , wherein the filter assembly further comprises an impeller housing for housing the impeller positioned between the inlet of the filter housing and the first filter, wherein the impeller housing further comprises: a lower cover comprising an opening aligned with the inlet of the filter housing, a top cover comprising an opening through which the solution is pushed out of the impeller housing to the first filter, wherein the impeller is positioned inside the impeller housing between the lower cover and the top cover with a space between the outer diameter of the impeller and an inner wall of the impeller housing, and wherein rotation of the impeller draws the solution through the inlet of the filter housing and accelerates the solution toward the outer diameter of the impeller and out the opening in the top cover to the first filter.

3. The magnetic barrel tumbler of claim 1 , wherein the filter assembly further comprises a bearing positioned in the concentric through hole that extends through the impeller; a rod that combines a top of the filter housing to a bottom of the filter housing and extends through the bearing with the plurality of magnets positioned apart from the concentric through hole of the impeller and apart from the rod that extends through the bearing in the concentric through hole of the impeller.

4. The magnetic barrel tumbler of claim 3 , wherein the first filter has a through hole through which the rod extends, and wherein the opening of the top cover of the impeller housing extends into the through hole of the first filter such that the solution is pushed out the opening of the top cover of the impeller housing into the through hole of the first filter and out a side of the first filter and out the outlet of the filter housing.

5. The magnetic barrel tumbler of claim 4 , wherein the filter assembly further comprises a one-way valve positioned on top of the opening in the top cover of the impeller housing to prevent the solution from flowing back into the impeller housing.

6. The magnetic barrel tumbler of claim 5 , wherein the filter assembly further comprises a spacer near the inlet of the filter housing to raise the inlet of the filter housing a sufficient distance off a bottom of the tub to receive the solution through the inlet of the filter housing yet block the work pieces from entering the inlet of the filter housing.

7. The magnetic barrel tumbler of claim 1 , wherein the inlet of the filter housing is at a bottom of the filter housing and concentric with the impeller and an outlet of the filter housing is at a side of the filter housing so that the impeller draws the solution through the inlet at the bottom of the filter housing concentric with the impeller and pushes the solution radially out the outlet of the filter housing.