摘要:
Suction or blow thermal roller (1) comprising: - a cylindrical body (2) extending along a longitudinal direction (X-X); said cylindrical body (2) comprising at least one inner tubular element (3) and at least one outer tubular element (4) that is concentrically arranged around said inner tubular element (3); said inner tubular element (3) comprises an outer diameter d and said outer tubular element (4) comprises an inner diameter D, being D>d; - two hubs (6), each arranged at one end of the cylindrical body (2); - at least one heat-exchange chamber (10) realized between said inner tubular element (3) and said outer tubular element (4); characterized by comprising a coating layer (11) for said inner tubular element (3); - said coating layer (11) comprises at least one rib (12) arranged along a helical path around said longitudinal direction (X-X); said at least one rib (12) being made in one piece in the coating layer (11) and realizing at least one helical channel (13) between said coating layer (11) and said outer tubular element (4); - said first helical channel (13) being made at least partially in said coating layer (11) so that said at least one rib (12) forms the side walls of said helical channel (13); - said rib (12) comprising a plurality of radial pass-through channels (31); - said outer tubular element (4) comprising a plurality of first suction holes (30) communicating with said radial pass-through channels (31); - said radial pass-through channels (31) communicating with an air suction assembly (32).
摘要:
The present invention relates to a component for a machine for producing and/or treating a fibrous web, comprising a base body, at least one metallic functional layer which is at least indirectly applied thereto, wherein the at least one functional layer comprises dispersion-hardening particles or MAX phase particles or is produced therefrom.
摘要:
An industrial roll, comprising: a substantially cylindrical shell having an outer surface and an internal lumen; a polymeric cover circumferentially overlying the shell outer surface, wherein the shell and cover have a plurality of through holes that provide fluid communication between the lumen and the atmosphere, the through holes being arranged in an array of rows and columns; and a sensing system comprising: a plurality of sensors embedded in the cover, the sensors configured to sense an operating parameter of the roll and provide signals related to the operating parameter, wherein at least some of the sensors include an aperture, and wherein some of the through holes of the cover extend through respective apertures of the sensors; a processor operatively associated with the sensors that processes signals provided by the sensors; and at least one signal-carrying member connected with at least one of the sensors, the signal-carrying member comprising a first segment that is routed between two columns of through holes and a second segment merging with the first segment that is routed between two rows of through holes.
摘要:
The invention relates to a quick-change calender (100), in particular for the treatment of non-woven fabric, textiles, plastic or paper webs, comprising at least one roll nip (3), at least one roller (1) being arranged in a movable magazine (6) together with at least one alternative roller (4, 5).
摘要:
The invention relates to a roller (1) for a machine for producing, further processing and/or finishing a fibrous material web such as a paper-, paperboard- or tissue web, said roller comprising a roller core (2) and a roller cover (3) arranged on the roller core (2) and having at least one layer. According to the invention, at least one device (7) is provided in the roller cover (3) for conducting away electrical charges, said device being conductively connected to a ground connection located outside the roller (1).
摘要:
A roller (1), in particular for use in a machine for producing and/or for finishing a fiber web such as a paper or cardboard web, comprises a roller core (2) and a roller cover (3) which is formed on said roller core and which has at least one layer made of a resin material (4) with at least one fiber material (5) embedded therein. The at least one layer has an outer surface which is suitable for coming into direct or indirect contact with the fiber web. The at least one fiber material (5) comprises fibers with a linear density of 0.5 to 5 dtex, preferably 0.5 to 2 dtex.