Sound absorption device or muffler for blow nozzles

A sound absorption device for a blow nozzle formed with a bore extending from a low-pressure side of the nozzle, at which a gas flow enters the nozzle, to a high-pressure side of the nozzle, at which the gas flow streams from the nozzle through a nozzle opening formed at an end of the bore, includes...

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Bibliographic Details
Main Author HENN; MANFRED
Format Patent
LanguageEnglish
Published 06.08.1991
Subjects
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES
LINING MACHINES
PACKING
PERFORMING OPERATIONS
PRINTING
PRINTING MACHINES OR PRESSES
STAMPS
STORING
TRANSPORTING
TYPEWRITERS
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Summary:A sound absorption device for a blow nozzle formed with a bore extending from a low-pressure side of the nozzle, at which a gas flow enters the nozzle, to a high-pressure side of the nozzle, at which the gas flow streams from the nozzle through a nozzle opening formed at an end of the bore, includes a sound-absorbing insert for muffling noise which results from a variation in density of the gas flow as it streams through the nozzle opening and has frequencies ranging over substantially the entire audible frequency range, the sound-absorbing insert being shaped as a truncated cone and being rigidly set into the bore formed in the blow nozzle, with the smaller face of the truncated cone being disposed directly at the nozzle opening, the sound-absorbing insert being a rigid structure formed of sintered bronze spheres having a power grain-size.
Bibliography:Application Number: US19900461245