Machine coolant recycling system
AssigneeFisher Controls International LLC
InventorsMarvin W. Hawkins, Kenneth H. Carder
Life of this patent
Estimating the term…
Abstract
A machine coolant recycling system has a holding tank in which machine coolant to be recycled is accumulated. The machine coolant in the holding tank is continuously filtered for a predetermined period of time and the surface of the machine coolant is continuously skimmed to remove undesired contaminants therefrom. The machine coolant from the holding tank is supplied to a centrifuge where it is centrifuged and is then pumped to a blending tank where it is chemically tested and reconstituted to its original composition. The machine coolant is then again continuously filtered until it is needed.
Claims39
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants, said recycling system comprising:
- a first holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- first filtration means fluidly connected to said first holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time;
- a centrifuge fluidly connected to said first filtration means to receive said machine coolant from said first filtration means after removal of said first portion of said contaminants, said centrifuge removing a second portion of said contaminants from said machine coolant via centrifugal force;
- a second holding tank fluidly connected to said centrifuge to receive said machine coolant from said centrifuge after removal of said second portion of said contaminants;
- and
- second filtration means fluidly connected to said second holding tank for receiving said machine coolant from said second holding tank, said second filtration means removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant.
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants, said recycling system comprising:
- a holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- first filtration means fluidly connected to said holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time;
- a centrifuge fluidly connected to said first filtration means to receive said machine coolant from said first filtration means after removal of said first portion of said contaminants, said centrifuge removing a second portion of said contaminants from said machine coolant via centrifugal force;
- and
- second filtration means for removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant after said machine coolant has been processed by said centrifuge.
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants from said machine coolant, said recycling system comprising:
- a holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- first filtration means fluidly connected to said holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time, said first filtration means comprising:
- a first filter with a first orifice size;
- and
- a second filter with a second orifice size, said second orifice size being smaller than said first orifice size;
- and
- second filtration means fluidly connected to said first filtration means for removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant after said machine coolant has been completely processed by said first filtration means.
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants from said machine coolant, said recycling system comprising:
- a holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- aeration means for injecting air bubbles into said machine coolant in said holding tank;
- removal means for removing contaminants from the surface of said machine coolant when said machine coolant is in said holding tank;
- first filtration means fluidly connected to said holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time;
- and
- second filtration means fluidly connected to said first filtration means for removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant after said machine coolant has been completely processed by said first filtration means.
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants from said machine coolant, said recycling system comprising:
- a holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- first filtration means fluidly connected to said holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time, said first filtration means comprising:
- a first filter with a first orifice size;
- and
- a second filter with a second orifice size, said second orifice size being smaller than said first orifice size;
- and
- second filtration means fluidly connected to said first filtration means for removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant after said machine coolant has been processed by said first filtration means, said second filtration means comprising at least one filter with a third orifice size, said third orifice size being smaller than said second orifice size.
A machine coolant recycling system for recycling a liquid machine coolant by removal of undesired contaminants from said machine coolant, said recycling system comprising:
- a holding tank for receiving machine coolant to be recycled, said machine coolant containing undesired contaminants;
- aeration means for injecting air bubbles into said machine coolant in said holding tank;
- removal means for removing contaminants from the surface of said machine coolant when said machine coolant is in said holding tank;
- first filtration means fluidly connected to said holding tank for removing a first portion of said contaminants from said machine coolant by filtering said machine coolant for a period of time;
- and
- second filtration means fluidly connected to said first filtration means for removing a third portion of said contaminants from said machine coolant by continuously filtering said machine coolant after said machine coolant has been processed by said first filtration means, said second filtration means comprising at least one filter with a third orifice size, said third orifice size being smaller than said second orifice size.
Dependencies are inferred from the claim text.