Classifying – separating – and assorting solids – Plural – diverse separating operations – Gaseous suspension and sifting
Patent
1989-08-17
1991-01-01
Hajec, Donald T.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Gaseous suspension and sifting
209138, 209152, B07B 900, B07B 406
Patent
active
049815814
ABSTRACT:
A dust collecting hood for use in conjunction with a sand cooling, blending, reclaiming of other rotary drum, within the casting industry, the hood incorporates an upper and lower section, either of unitary or separate construction, the upper section including a discharge opening which cooperates with a vacuum pump to draw air through the hood, and the proximate discharge end of the rotary drum, while the lower section of the hood provides a discharge opening for removal of the mold sand from the drum, the hood, at this collection location, while further incorporating ports through which air may pass for forming the air curtain across the associated hood and drum, for removal of said fines, dust, and other deleterious particles from the ambient air.
REFERENCES:
patent: 138019 (1873-04-01), Guilder
patent: 150578 (1874-05-01), Hunter
patent: 311808 (1885-02-01), Butler et al.
patent: 1828247 (1931-10-01), Forster
patent: 3998262 (1976-12-01), Didion
patent: 4050635 (1977-09-01), Mueller et al.
patent: 4566637 (1986-01-01), Deve
Denk Paul M.
Didion Manufacturing Co.
Hajec Donald T.
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