Dryer drum assembly

Claim 2

An end head assembly for a dryer drum having a drum shell and a drum journal comprising; a headplate member having extending radial side surfaces, said side surfaces having an inner end surface movably supported on the drum journal and an outer end surface rigidly attached to the drum shell whereby any radial pressure on the shell is transmitted only to the drum journal, a flange member having extended radial side surfaces spaced out of contact with said headplate member side surfaces, said flange member side surfaces having an inner end surface rigidly attached to the drum journal and an outer end surface in the vicinity of the drum shell out of contact therewith whereby any axial pressure is transmitted only to the drum journal, and means positioned between said headplate member and said flange side surfaces accommodating relative movement between said members while providing a thermal seal between said members and the drum shell, said means including a pair of spaced expandable heat seal means, one of said pair being positioned in the vicinity of the drum shell between an outer side surface of said flange member and an inner side surface of said headplate member and the other of said pair being positioned in the vicinity of the drum axis between an outer surface of the drum journal and an inner end surface of the headplate member.

Claim 3

End head assemblies for a steam heated dryer drum comprising, a pair of outer members, each having a central opening receiving opposite ends of a drum journal and side surfaces radially extending from said opening to define inner and outer end face surfaces, said outer-end surfaces being rigidly attached to respective ends of a drum shell, one of said inner end surfaces being rigidly attached to one of said journal ends and the other of said inner end surface being in axially movable contact with the other of said journal ends in a radial load bearing relation, a pair of inner members integrally formed With the drum journal along opposite ends thereof, said inner members having side surfaces radially extending from said journal into relatively close proximity and out of contact with the drum shell, each of said inner members being positioned adjacent and axially inwardly a distance from a respective outer member equal to at least any thermally induced dimensional changes occurring in said drum journal, a first means positioned between respective adjacently opposite side surfaces of said members in the vicinity of the drum shell, and a second means positioned between said other inner end surface and said other journal end in an axially movable relation thereto, whereby said means maintain stream pressure within the drum shell and permit relative movement between said outer and inner members while avoiding temperature induced stresses to the drum shell.

Claim 4

End head assemblies for a steam heated dryer drum comprising, a pair of outer members, each having a central opening receiving opposite ends of a drum journal and side surfaces radially extending from said opening to define inner and outer end face surfaces, said outer-end surfaces being rigidly attached to respective ends of a drum shell, one of said inner end surfaces being rigidly attached to one of said journal ends and the other of said inner end surface being in axially movable contact with the other of said journal ends in a radial load bearing relation, a pair of inner members integrally formed With the drum journal along opposite ends thereof, said inner members having side surfaces radially extending from said journal into relatively close proximity and out of contact with the drum shell, each of said inner members being positioned adjacent and axially inwardly a distance from a respective outer member equal to at least any thermally induced dimensional changes occurring in said drum journal, a first means positioned between respective adjacently opposite side surfaces of said members in the vicinity of the drum shell, and a second means positioned between said other inner end surface and said other journal end in an axially movable relation thereto, whereby said means maintain stream pressure within the drum shell and permit relative movement between said outer and inner members while avoiding temperature induced stresses to the drum shell.

Claim 5

The dryer drum assembly as defined in claim 2 wherein one of said pair of said outer members is rigidly attached to an adjacently opposite inner member in the vicinity of the drum journal.

Claim 6

The dryer drum assembly as defined in claim 2 wherein one of said pair of said outer members is rigidly attached to the drum journal and out of contact with an adjacently opposite inner member.

Claim 7

The end head assembly as defined in claim 2, wherein the side surfaces of the outer members are exposed to atmospheric pressure.

Claim 8

The end head assembly as defined in claim 2 wherein the first and second means, comprise resiliently expandable pressure gaskets.

Claim 9

The end head assembly as defined in claim 2, wherein the first means comprises a resiliently expandable pressure gasket, and the second means comprises a ball-bearing means.

Claim 10

A dryer drum assembly comprising, a cylindrical shell, a hollow journal shaft coaxial with said shell, said shaft having means distributing pressurized stream within said shell and means withdrawing spent steam from said shell, said shaft having a pair of opposite flanges positioned in the vicinity of the shaft ends and within the shell periphery out of contact therewith, a pair of opposite head members coaxially mounted on said shaft ends, each outwardly spaced a distance from an adjacently opposite flange equal to at least any thermally induced dimensional changes occuring in said shaft, said head members extending radially outwardly from said shaft into contact with the respective shell ends, one of said head members being rigidly attached to said shaft, the other of said head members being axially movable along said shaft, and means positioned between the respectively adjacently opposite head members and flanges maintaining the pressurized steam within the shell and accommodating relative movement between the flanges and head members whereby thermally induced expansion of the shaft avoids temperature stresses on the shell.

Claim 11

A dryer drum assembly comprising, a cylindrical shell, a hollow journal shaft coaxial with said shell, said shaft having means distributing pressurized stream within said shell and means withdrawing spent steam from said shell, said shaft having a pair of opposite flanges positioned in the vicinity of the shaft ends and within the shell periphery out of contact therewith, a pair of opposite head members coaxially mounted on said shaft ends, each outwardly spaced a distance from an adjacently opposite flange equal to at least any thermally induced dimensional changes occuring in said shaft, said head members extending radially outwardly from said shaft into contact with the respective shell ends, one of said head members being rigidly attached to said shaft, the other of said head members being axially movable along said shaft, and means positioned between the respectively adjacently opposite head members and flanges maintaining the pressurized steam within the shell and accommodating relative movement between the flanges and head members whereby thermally induced expansion of the shaft avoids temperature stresses on the shell.

Claim 12

The dryer drum assembly as defined in claim 8 wherein the means positioned between the respective adjacently opposite head members and flanges comprise an upper resilient expandable heat seal means positioned in the vicinity of the cylindrical shell between said members and a lower ball bearing means positioned away from said upper seal means in a pressure transmitting relation between the other of the pair of head members and the journal shaft and out of contact with the adjacently opposite flange.

Claim 13

An end head assembly for a dryer drum having a drum shell and a drum journal comprising; a head plate member having extended radial side surfaces, said side surfaces having an inner end surface movably supported on the drum journal and an outer end surface rigidly attached to the drum shell whereby any radial pressure on the shell is transmitted only to the drum journal, a flange member having extended radial side surfaces spaced out of contact with said head plate member side surfaces, said flange member side surfaces having an inner end surface rigidly attached to the drum journal and an outer end surface in the vicinity of the drum shell out of contact therewith whereby any axial pressure is transmitted only to the drum journal, and means positioned between said head plate member and said flange side surfaces accommodating relative movement between said members while providing a thermal seal between said members and the drum shell, said means including an expandable heat seal means positioned in the vicinity of the drum shell between an outer side surface of the flange member and an opposed inner side surface of the plate member, and a ball bearing means positioned in the vicinity of the drum axes between an outer surface of the drum journal and the inner end surface of the plate member supporting said plate member on the bearing journal.

Claim 14

An end head assembly for a dryer drum having a drum shell and a drum journal comprising; a head plate member having extended radial side surfaces, said side surfaces having an inner end surface movably supported on the drum journal and an outer end surface rigidly attached to the drum shell whereby any radial pressure on the shell is transmitted only to the drum journal, a flange member having extended radial side surfaces spaced out of contact with said head plate member side surfaces, said flange member side surfaces having an inner end surface rigidly attached to the drum journal and an outer end surface in the vicinity of the drum shell out of contact therewith whereby any axial pressure is transmitted only to the drum journal, and means positioned between said head plate member and said flange side surfaces accommodating relative movement between said members while providing a thermal seal between said members and the drum shell, said means including an expandable heat seal means positioned in the vicinity of the drum shell between an outer side surface of the flange member and an opposed inner side surface of the plate member, and a ball bearing means positioned in the vicinity of the drum axes between an outer surface of the drum journal and the inner end surface of the plate member supporting said plate member on the bearing journal.