There is provided a sheet manufacturing apparatus that manufactures a sheet from a material containing fibers, including: an accumulation section that forms a web by accumulating the material containing fibers by an air flow; a web transport section including a transport belt that comes into contact with one surface of the web and holds the web; a humidification section provided to face the one surface of the transport belt and applying moisture from the other surface side of the web; and a suction section provided to face the humidification section with the transport belt interposed therebetween, in which the suction section has a plurality of suction ports for suctioning air, the humidification section has a discharge port for discharging humidified air, and among the plurality of suction ports, a first suction port and the discharge port are disposed to face each other.

There is provided a sheet manufacturing apparatus that manufactures a sheet from a material containing fibers, including: an accumulation section that forms a web by accumulating the material containing fibers by an air flow; a web transport section including a transport belt that comes into contact with one surface of the web and holds the web; a humidification section provided to face the one surface of the transport belt and applying moisture from the other surface side of the web; and a suction section provided to face the humidification section with the transport belt interposed therebetween, in which the suction section has a plurality of suction ports for suctioning air, the humidification section has a discharge port for discharging humidified air, and among the plurality of suction ports, a first suction port and the discharge port are disposed to face each other.

The object of the invention is an apparatus for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the apparatus comprises a measuring receptacle (15) functioning at normal air pressure, in which receptacle the amount of the water (7) of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter (20) and of a measuring weir (8).

A system is disclosed for providing impingement of a fluid for fabric conditioning. The system includes a fluid jet and a control mechanism for adjusting an impingement angle of the fluid jet onto a workpiece such that the angle may be adjusted through an angle that is perpendicular to the workpiece.

A system is disclosed for providing impingement of a fluid for fabric conditioning. The system includes a fluid jet and a control mechanism for adjusting an impingement angle of the fluid jet onto a workpiece such that the angle may be adjusted through an angle that is perpendicular to the workpiece.

A method for monitoring a wear structure including at least one wear element in a machine for generating or processing a fibrous material web, includes providing a time at which the wear element became operational, providing a time at which a defined first wear level of the wear element was reached, providing at least one further characteristic variable, and predicting a remaining operating time of the wear element from the knowledge of the times, in particular from a time difference between the times, as well as from the at least one further characteristic variable, by using a computer system. A device for carrying out the method is also provided.

A method for monitoring a wear structure including at least one wear element in a machine for generating or processing a fibrous material web, includes providing a time at which the wear element became operational, providing a time at which a defined first wear level of the wear element was reached, providing at least one further characteristic variable, and predicting a remaining operating time of the wear element from the knowledge of the times, in particular from a time difference between the times, as well as from the at least one further characteristic variable, by using a computer system. A device for carrying out the method is also provided.

The invention relates to a suction device (15) for use in a papermaking machine (1). The suction device (15) has a length (L) in the machine direction that extends from a first end (16) to a second end (17). The suction device (15) further has a surface (18) which, during use of the suction device (15) in the papermaking machine, will be facing a permeable fabric (4, 6) passing the suction device during operation such that this surface (18) is a fabric-facing surface (18). The fabric-facing surface (18) has a first part (19) which begins at the first end (16) of the suction device (15) and extends towards the second end (17) but ends before the second end (17) of the suction device. The first part (19) of the fabric-facing surface (18) is formed by a plurality of planar surfaces (23) which constitute end surfaces of a plurality of solid elements (21) and lie in the same plane such that, during operation, they can contact a fabric (4, 6) gliding over the fabric-facing surface (18) along a straight path. The solid elements (21) are separated from each other along the length of the suction device (15) such that channels (24) are defined between the solid elements (21), and the suction device (15) can be connected to at least one source of underpressure (26, 27) in such a way that the at least one source of underpressure (26, 27) is in communication with the channels (24) between the solid elements (21) such that, when the suction device (15) is used and the permeable fabric (4, 6) runs over the fabric-facing surface (18), the suction device (15) can act on the permeable fabric (4, 6) through the channels (24) and draw the permeable fabric (4, 6) towards the fabric-facing surface (18). The first part (19) of the fabric-facing surface (18) is followed by a second part (20) of the fabric-facing surface (18). The second part (20) of the fabric-facing surface (18) is a surface (33) formed as an end surface of a final solid element (22) which does not lie in the same plane as planar surfaces (23) belonging to the first part (19) of the fabric-facing surface (18) but is spaced from that plane such that, when the permeable fabric (4, 6) passes over the suction device (15), the permeable fabric (4, 6) will not contact the final solid element (22). The final solid element (22) is sepa

The invention relates to a suction device (15) for use in a papermaking machine (1). The suction device (15) has a length (L) in the machine direction that extends from a first end (16) to a second end (17). The suction device (15) further has a surface (18) which, during use of the suction device (15) in the papermaking machine, will be facing a permeable fabric (4, 6) passing the suction device during operation such that this surface (18) is a fabric-facing surface (18). The fabric-facing surface (18) has a first part (19) which begins at the first end (16) of the suction device (15) and extends towards the second end (17) but ends before the second end (17) of the suction device. The first part (19) of the fabric-facing surface (18) is formed by a plurality of planar surfaces (23) which constitute end surfaces of a plurality of solid elements (21) and lie in the same plane such that, during operation, they can contact a fabric (4, 6) gliding over the fabric-facing surface (18) along a straight path. The solid elements (21) are separated from each other along the length of the suction device (15) such that channels (24) are defined between the solid elements (21), and the suction device (15) can be connected to at least one source of underpressure (26, 27) in such a way that the at least one source of underpressure (26, 27) is in communication with the channels (24) between the solid elements (21) such that, when the suction device (15) is used and the permeable fabric (4, 6) runs over the fabric-facing surface (18), the suction device (15) can act on the permeable fabric (4, 6) through the channels (24) and draw the permeable fabric (4, 6) towards the fabric-facing surface (18). The first part (19) of the fabric-facing surface (18) is followed by a second part (20) of the fabric-facing surface (18). The second part (20) of the fabric-facing surface (18) is a surface (33) formed as an end surface of a final solid element (22) which does not lie in the same plane as planar surfaces (23) belonging to the first part (19) of the fabric-facing surface (18) but is spaced from that plane such that, when the permeable fabric (4, 6) passes over the suction device (15), the permeable fabric (4, 6) will not contact the final solid element (22). The final solid element (22) is sepa

The present disclosure relates to a vacuum dewatering apparatus comprising a vacuum box disposed opposite of a steam box where the steam box comprises a bottom plate having a substantially linear portion and a curvilinear portion. A plurality of apertures are disposed along at least a portion of the curvilinear portion to permit the transmission of steam. In a preferred embodiment, the curvilinear portion is adjacent to the trailing edge and the linear portion is adjacent to the leading edge of the apertured bottom plate. Further, at least a portion of the apertures are aligned opposite the vacuum box which acts to remove the steam. The vacuum dewatering apparatus of the present invention enables the use of high levels of steam improving vacuum dewatering and improving drying efficiency.