Floor scrubber with recycled cleaning solution
First Claim
1. A recirculating floor scrubber supported for movement along a floor surface, a floor scrubber frame, a combined liquid supply and recovery tank on said frame for cleaning solution, said tank providing a bottom wall, powered scrubbers on said frame, a first filter, a vacuum means for removing particulate contaminated cleaning solution from a floor and for delivering said contaminated cleaning solution to said tank through said first filter, said first filter operating to trap and contain at least the larger size particulate within said first filter, a second filter within said tank at a location spaced from said bottom wall, a pump, third filter means located between said pump and said scrubbers, said pump operable to draw cleaning solution from said tank through said second filter and to deliver such cleaning solution through said third filter means to said scrubbers, said third filter means operating to remove small particulate from said cleaning solution before delivery thereof to said scrubbers.
4 Assignments
0 Petitions
Accused Products
Abstract
A floor scrubber with recycled cleaning solution provides a single cleaning solution tank. Cleaning solution is delivered to powered scrubbers, and particulate-bearing contaminated cleaning solution is vacuumed from the floor after use by the scrubbers. The particulate-laden cleaning solution is returned to the storage tank through a primary large area filter located within the storage tank. Subsequently, the partially regenerated cleaning solution is pumped out of the tank through an intermediate filter and is discharged to the scrubbers through a pair of series-connected filters capable of removing very small particles from the cleaning solution. Rechargeable batteries power the unit. The unit can be operated as a self-contained unit without servicing for a period of at least about six to eight hours.
101 Citations
11 Claims
- 1. A recirculating floor scrubber supported for movement along a floor surface, a floor scrubber frame, a combined liquid supply and recovery tank on said frame for cleaning solution, said tank providing a bottom wall, powered scrubbers on said frame, a first filter, a vacuum means for removing particulate contaminated cleaning solution from a floor and for delivering said contaminated cleaning solution to said tank through said first filter, said first filter operating to trap and contain at least the larger size particulate within said first filter, a second filter within said tank at a location spaced from said bottom wall, a pump, third filter means located between said pump and said scrubbers, said pump operable to draw cleaning solution from said tank through said second filter and to deliver such cleaning solution through said third filter means to said scrubbers, said third filter means operating to remove small particulate from said cleaning solution before delivery thereof to said scrubbers.
- 9. A recycling floor cleaner comprising a single tank for cleaning solution, powered scrubber means, a pair of series connected final filters, a secondary filter, a pump having an inlet and an outlet, conduit means connecting said tank to said pump inlet through said secondary filter and connecting said pump outlet to said scrubbers through said final filters, a primary filter in said tank, vacuum means operable to draw contaminated cleaning solution used by said scrubbers to clean a floor through said primary filter into said tank for redelivery to said scrubbers and reuse in cleaning, said primary filter trapping and separating particles larger than a first predetermined size within said primary filter, said final filters trapping and separating particles having a size less than said first predetermined size and greater than a substantially smaller second predetermined size so that recirculated cleaning solution delivered to said scrubbers is substantially free of particles having a size greater than said second predetermined size, some of said particles having a size less than said first predetermined size settling along the lower portion of said tank and cooperating with said primary filter to prevent substantial amounts of said particles from reaching said secondary filters when said cleaning solution is recirculated by said pump.
Specification