Vibratory screening apparatus and method for removing suspended solids from liquid
AssigneeDresser Industries, Inc.
InventorDennis R. Eifling
Life of this patent
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Abstract
A vibratory screening apparatus for removing suspended solids from liquid comprising a first mesh screen having openings with first and second dimensions for receiving the suspended solids thereon, a second mesh screen in superimposed abutment with the first screen and having openings with a third and fourth dimension perpendicular to the first screen openings, the third dimensions being larger than the first dimension and the fourth dimension being smaller than the second dimension of the first screen openings, and a vibratory source coupled to the abutting screens for vibrating the screens whereby the openings of the second screen effectively prevent suspended solids from becoming lodged in the openings of the first screen.
Claims14
A vibratory screening apparatus to effectively prevent suspended solids from becoming lodged therein during removal of suspended solids from a liquid comprising:
- a. a first upper mesh screen having openings with first and second different dimensions for receiving said suspended solids thereon,
- b. a second lower mesh screen in superimposed abutting relationship with said first screen and having openings with a third and fourth dimension perpendicular to the dimensions of said first screen openings, said third dimension being larger than the smaller of said dimensions of said first mesh screen openings and said fourth dimension being smaller than the larger of said dimensions of said first mesh screen openings, and
- c. vibratory means coupled to said abutting screens for vibrating said screens whereby said abutting screens effectively prevent suspended solids from becoming lodged in said upper and lower mesh screen openings.
A method of effectively preventing suspended solids from becoming lodged in a vibrating screening apparatus during removal of said suspended solids from a liquid comprising the steps of:
- a. forming a first upper mesh screen having openings with first and second different dimensions for receiving said suspended solids thereon,
- b. placing a second lower mesh screen in superimposed abutting relationship with said first screen, said second screen having openings with a third and fourth dimension perpendicular to the dimensions of said first screen openings and having said third dimension larger than the smaller of said dimensions of said first mesh screen openings and said fourth dimension smaller than the larger of said dimensions of said first mesh screen openings,
- c. passing said liquid through said screens, and
- d. vibrating said screens with a vibratory source coupled to said abutting screens such that said abutting screens effectively prevent said suspended solids from becoming lodged in said openings.
Dependencies are inferred from the claim text.