Pliant media blasting device
OwnerWilliam R. Lynninventor
Life of this patent
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Abstract
The invention relates to a pliant particulate media device which includes an air source for supplying air pressure to a supply container, containing a quantity of pliant blasting media, and a discharge line. The container is connected with a mechanical feed device that positively meters out a desired quantity of blasting media into a discharge line which conveys the blasting media to a discharge nozzle where it is discharged against a surface to be treated to achieve the desired treatment. The invention additionally relates to a recovery system for separating the pliant blasting media from the debris and the other unwanted materials and a system for removing undesired liquids and chemicals from the pliant blasting media after use.
Claims24
A blasting device, suitable for discharging pliant particulate media against a surface to achieve a desired surface treatment, said blasting device comprising:
- a) a storage container, adjacent having an outlet, for containing a supply of pliant particulate blasting media;
- b) a discharge conduit having nozzle means connected to a first end thereof;
- c) media feed means, connecting the outlet of said storage container to a second end of the discharge conduit remote from said nozzle means, for supplying a desired quantity of blasting media from said storage container to the second end of said discharge conduit, said media feed means facilitating positively conveyance of said blasting media into a flow of pressurized air in said discharge conduit to provide a continuous supply of blasting media to said nozzle means;
- d) air supply means connected adjacent the second end of said discharge conduit for supplying the flow of pressurized air thereto;
- e) means for substantially preventing back flow of pressurized air into said storage container;
- f) means for washing a slurry formed from a cleaning liquid and the used blasting media to remove debris and other contaminants from the used blasting media;
- g) means for centrifuging the slurry to separate the cleaned blasting media from the cleaning liquid, debris and other contaminants;
- and
- h) means for filtering the cleaning liquid, debris and other contaminants to separate the debris and other contaminants from the cleaning liquid.
A blasting device, suitable for discharging pliant particulate blasting media against a surface to achieve a desired treatment of that surface, said blasting device comprising:
- a) a storage container, for containing a supply of pliant particulate blasting media, having an outlet;
- b) a discharge conduit having a discharge nozzle connected to a first end thereof;
- c) air supply means connected adjacent a second end of said discharge conduit for supplying a flow of pressurized air thereto;
- d) media feed means, connecting the outlet of said storage container adjacent the second end of the discharge conduit, for supplying a desired quantity of blasting media from said storage container to the second end of said discharge conduit, said media feed means facilitating positive conveyance of said blasting media into said flow of pressurized air in said discharge conduit to provide a continuous supply of blasting media to said nozzle;
- e) means for preventing back flow of the pressurized air flow into said storage container;
- f) means for forming, after use of the blasting media, a liquid slurry of a cleaning liquid and the used blasting media for facilitating removal of absorbed debris and other contaminants from the used blasting media;
- and
- g) means for separating the cleaned blasting media from the cleaning liquid, debris and other contaminants so that the cleaned blasting media may be reused.
An apparatus for treating a contaminated surface with a plurality of discrete, individual particles of a pliant particulate blasting media capable of absorbing a contaminate from the contaminated surface, said apparatus comprising
- a) means for containing a supply of said pliant particulate blasting media;
- b) a discharge conduit having a first end and a second end, the second end facilitating discharge of said pliant particulate blasting media against the contaminated surface for absorbing the contaminate from said contaminated surface;
- c) means for positively conveying said pliant particulate blasting media from said storage means to the first end of said discharge conduit;
- d) means for supplying air flow under pressure to the first end of said discharge conduit whereby the pressurized air flow and said positively conveyed pliant particulate blasting media mix together in said discharge conduit to form a pressurized air and blasting media mixture;
- wherein said apparatus is used in combination with:
- e) a dry light resilient absorbent cellular material pretreated with a dry powder to increase the density and the abrasiveness of the cellular material which comprises said pliant particulate blasting media.
In an apparatus for treating a contaminated surface with a plurality of discrete, individual particles of a pliant particulate blasting media capable of absorbing a contaminate from the contaminated surface, said apparatus comprising
- a) means for containing a supply of said pliant particulate blasting media;
- b) a discharge conduit having a first end and a second end, the second end facilitating discharge of said pliant particulate blasting media against the contaminated surface for absorbing the contaminate from said contaminated surface;
- c) means for positively conveying said pliant particulate blasting media from said storage means to the first end of said discharge conduit;
- d) means for supplying air flow under pressure to the first end of said discharge conduit whereby the pressurized air flow and said positively conveyed pliant particulate blasting media mix together in said discharge conduit to form a pressurized air and blasting media mixture;
- wherein said pliant particulate blasting media comprises a dry light resilient absorbent cellular material pretreated with a dry powder to increase the density and the abrasiveness of said cellular material for enhanced surface treatment.
Dependencies are inferred from the claim text.