EP0107607A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Extended nip press
Assignee: Beloit Corp
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Filing: 1983-09-09
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Granted: —
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Expires: 2003-09-09
Abstract
Abstract It includes an extended press nip between a rotatable roll shell (10) and a shoe (11) having a concave surface (12) facing the nip with a piston (16) and cylinder (17) support for the shoe and a stationary shaft (26) extending through the roll shell (10) and a piston (32) and cylinder (33) support opposite the nip between the roll shell (10) and shaft (26) with the shoes (11, 29) being essentially the same area and providing opposed equal and opposite forces and the ends of the shafts being supported on a universal bearing (27, 28) so as to permit bending of the shaft (26) with the shell (10) being driven by a gear (38) on the shell and drive gears (39, 40) laterally of the nip and spaced diametrically opposite to each other.
Inventors
- 👤 Edgar J. Justus
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 03:48
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0209; D21F3/0218
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
149 words
Press mechanism for dewatering a traveling fibrous web, characterised by an extended press nip for receiving an endless web (W) and being defined between a rotatable support roll shell (10) and a shoe (11) having a concave surface (12) facing the nip, a pivoted support (15) for said shoe (11) having an axis parallel to the nip, an endless belt (B) trained through the nip to slide over the shoe (11) to carry a web (W) through the nip with water receiving means (F1,F2) passing through the nip to receive water expressed from the web, means (14) to deliver lubricant between said belt (B) and shoe (11), a pressure fluid support (16,17,18) for said shoe (11) providing pressure in the nip, and a pressure fluid support (26,32,33,34) within the roll shell (10) opposite the nip providing a backing force within the shell opposite the force of the shoe (11).
Claim 2
Dependent Claim
149 words
Press mechanism for dewatering a traveling fibrous web, characterised by an extended press nip for receiving an endless web (W) and being defined between a rotatable support roll shell (10) and a shoe (11) having a concave surface (12) facing the nip, a pivoted support (15) for said shoe (11) having an axis parallel to the nip, an endless belt (B) trained through the nip to slide over the shoe (11) to carry a web (W) through the nip with water receiving means (F1,F2) passing through the nip to receive water expressed from the web, means (14) to deliver lubricant between said belt (B) and shoe (11), a pressure fluid support (16,17,18) for said shoe (11) providing pressure in the nip, and a pressure fluid support (26,32,33,34) within the roll shell (10) opposite the nip providing a backing force within the shell opposite the force of the shoe (11).
Claim 3
Dependent Claim
49 words
Press mechanism as claimed in claim 1, characterised in that said shoe (11) and said roll shell (10) are bendable along their axial length and said pressure fluid supports (16,17,18,26,32,33, 34) apply uniform force along said shoe and along said roll for maintining uniform nip pressure along the nip.
Claim 4
Dependent Claim
57 words
Press mechanism as claimed in claim 1 or 2, characterised in that the fluid support for said roll shell (10) includes a shaft (26) extending through the shell (10) with an expansible fluid support (32,33,34) between the shaft and shoe, and a universal bearing (26,28) at each end of the shaft (26) accomodating bending of the shaft.
Claim 5
Dependent Claim
38 words
Press mechanism as claimed in any one of the claims 1 to 3, characterised in that the forces applied by said fluid pressure supports (16,17,18,26,32,33,34) for the shoe (11) and the roll shell (10) are equal and opposite.
Claim 6
Dependent Claim
44 words
Press mechanism as claimed in claim 4, characterised in that said pressure fluid supports each include a piston (16,32) and cylinder (17,33) with the fluid delivered to the cylinder for each support originating from the same source (37) and the pressures being substantially equal.
Claim 7
Dependent Claim
67 words
Press mechanism as claimed in any one of the claims 1 to 5, characterised in that said pressure fluid support (26,32,33,34) within the roll shell (10) includes a sliding second shoe (29) opposite the first shoe (11) with means for supplying lubricating fluid between the roll shell (10) and second shoe (29) and wherein said shoes are of substantially equal length in the direction of roll rotation.
Claim 8
Dependent Claim
60 words
Press mechanism as claimed in any one of the claims 1 to 6, characterised in that the pressure fluid support (26,32,33,34) within the roll shell (10) includes an axial shaft (26) extending through the roll shell and means (19 to 28) are provided mechanically interconnecting the ends of the shaft (26) and the pressure fluid support for said shoe (11).
Claim 9
Dependent Claim
52 words
Press mechanism as claimed in claim 7, characterised in that said means (19 to 28) includes an overhead frame (24), and hanger means (20 to 23) supported from said frame (24) connected to the ends of said shaft (26) and connected to support said pressure fluid support (16,17,18) for said shoe (11).
Claim 10
Dependent Claim
53 words
Press mechanism as claimed in any one of the claimes 1 to 8, characterised by a drive (38 to 42) for rotating the roll shell (10) comprising a driven gear (38) concentric with the roll shell (10) and a drive gear (39,40) positioned laterally of the nip to accommodate bending of the shell.
Claim 11
Dependent Claim
25 words
Press mechanism as claimed in claim 9, including a second drive gear (39,40) lateral of the nip and diametrically opposite the first drive gear (39,40).
Claim 12
Dependent Claim
116 words
Press mechanism for dewatering a traveling fibrous web, characterised by an extended press nip for receiving an endless web and being defined between a rotatable support roll shell (10) and an elongate fluid pressure supported press means (11,15,16,17,18) facing the nip; a shaft (26) extending through the roll shell (10) ; a shoe (29) within the roll shell (10) opposite the nip; a fluid pressure support (32,33,34) between the shoe (29) and shaft (26) opposite the nip; and a drive (38 to 42) for rotating the roll shell (10) comprising a driven gear (38) concentric with the roll shell (10) and a drive gear (39,40) positioned laterally of the nip to accommodate bending of the shell.
Claim 13
Dependent Claim
116 words
Press mechanism for dewatering a traveling fibrous web, characterised by an extended press nip for receiving an endless web and being defined between a rotatable support roll shell (10) and an elongate fluid pressure supported press means (11,15,16,17,18) facing the nip; a shaft (26) extending through the roll shell (10) ; a shoe (29) within the roll shell (10) opposite the nip; a fluid pressure support (32,33,34) between the shoe (29) and shaft (26) opposite the nip; and a drive (38 to 42) for rotating the roll shell (10) comprising a driven gear (38) concentric with the roll shell (10) and a drive gear (39,40) positioned laterally of the nip to accommodate bending of the shell.
Claim 14
Dependent Claim
25 words
Press mechanism as claimed in claim 11, including a second drive gear (39,40) lateral of the nip and diametrically opposite the first drive gear (39,40).
References Cited (Backward Citations)
No citation records indexed.
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