초록 ▼

An industrial scrubbing machine is provided including a foam and spray suppressor in the detergent solution recovery system. The foam suppressor decreases the velocity of the detergent solution as it is drawn from the floor back into the apparatus by the squeegee. The decrease in velocity of the det

An industrial scrubbing machine is provided including a foam and spray suppressor in the detergent solution recovery system. The foam suppressor decreases the velocity of the detergent solution as it is drawn from the floor back into the apparatus by the squeegee. The decrease in velocity of the detergent solution allows the solution to be redeposited in the scrubbing apparatus with a minimum of agitation, thus suppressing the tendency of the detergent solution to foam and form spray. The apparatus may have a foam filter in the solution recovery tank to assist in controlling foam development and movement. Further, the apparatus may have spray nozzles to apply a mist to break foam that has developed.

대표청구항 ▼

A scrubbing machine comprising: a body; wheels rotatably affixed to said body; tank means for containing scrubbing solution, said tank means comprising a single recovery tank; means for conveying said solution from said tank means to the surface to be scrubbed; means for working the solution on the

A scrubbing machine comprising: a body; wheels rotatably affixed to said body; tank means for containing scrubbing solution, said tank means comprising a single recovery tank; means for conveying said solution from said tank means to the surface to be scrubbed; means for working the solution on the surface; vacuum squeegee means for recovering said solution from the scrubbed surface; means for conveying said solution from said squeegee means to said tank means; said conveying means including a vacuum fan and duct means, said vacuum fan providing sufficiently high velocity to pick up said solution from the surface, said velocity being sufficiently great that substantial foaming would occur in said tank means if said velocity were maintained throughout said duct means; said duct means having an entrance cross section area to an exit cross sectional area ratio sufficient to substantially reduce the necessary high velocity of the solution at the squeegee means to a critical lower velocity which minimizes foaming and spraying, wherein at least a portion of said duct means has a substantially uniformly increasing cross sectional area whereby said solution velocity is reduced sufficiently to avoid development of foam and spray as said recovered solution is conveyed to said tank means.