摘要:
The invention relates to an arrangement in a paper machine or similar, including a press section (11) equipped with one or more press nips (13.1, 13.2) and a dryer section comprising a web-supporting web transfer. Between the press and the first dryer cylinder there are a compactly arranged preimpingement dryer (20) and a vertical impingement dryer (21).
摘要:
A side guiding piece for guiding the chain of a lamellar chain conveyor or other wheel-supported chain conveyor laterally comprises means (7, 9, 12, 13, 20) for attaching it to the chain of the lamellar chain conveyor. A bracket (5) extending to behind at least one wheel (14) of the conveyor chain and support means (12, 13) supported by the axle structure (14) of at least one wheel are arranged into the lateral guide piece. One lateral guide piece comprises locking means (7, 9, 12, 13, 20) supported by at least two consecutive axle structures (14).
摘要:
The forming section comprises two wire loops (11, 21) which form a twin- wire zone which comprises a dewatering element (40) performing initial dewatering and a dewatering device (100b) following it. The dewatering device (100b) comprises a stationary support shaft (110) on which are supported support elements (111, 112, 113, 114) around which circles an impermeable belt loop (120). The dewatering device (100b) further comprises a curvilinear dewatering zone (Z30) over which the wires (11, 21) travel supported by the belt loop (120). The degree of curvature of the curve of the curvilinear dewatering zone (Z30) increases in the travel direction of the belt (120) such that increasing dewatering pressure is applied to pulp suspension travelling between the wires (11, 21) on the curvilinear dewatering zone (Z30).
摘要:
The invention relates to a twin wire press (2) for dewatering a fibre suspension, comprising a lower wire (8) and an upper wire (10) between which a fibre web (F) is formed. An arrangement of rolls (4) comprises a first dewatering control means (22) having a dewatering element (24) forming a press nip (25) with a first roll (26) (or a second dewatering control means), where the element and the first roll, (or alternative second control means), along a section of the press nip where they bear on each other, are adapted to each other to provide a thickness profile designed to provide a dewatering profile, and where the element presses the formed web (F) against the first roll, or the alternative second control means, via the wires, whereby water pressed from the web is drained through the element. The invention also concerns a method for dewatering a fibre suspension.
摘要:
A doctor apparatus for a web forming machine for doctoring a moving surface with the doctor apparatus (10) has a blade (16), a blade holder (14) to which the blade (16) is adapted, a frame component (12) to which the blade holder (14) is adapted, and a loading element (23) arranged between the frame component (12) and the blade holder (14) for loading the blade holder (14) and further the blade (16). The loading element (23) is tied to both the frame component (12) and the blade holder (14). The invention also relates to a blade holder (14) and a method for a web forming machine for doctoring a moving surface (26).
摘要:
A reel (1) for the continuous reeling up of a fibrous web around a reel spool (5) to form a machine roll (6), the reel (1) comprising a reeling drum (10), whereby a nip load can be formed between the machine roll (6) and the reeling drum (10), the machine roll (6) being arranged so as to be movable, during the reeling, along an substantially horizontal path from the starting point of the reeling to the point of transfer of the completed machine roll, the starting point of the reeling being upstream of the reeling drum (10) and the point of transfer downstream of the same, whereby, upstream of the reeling drum, there are primary support means (7) for supporting the machine roll (6) against the reeling drum (10), and downstream of the reeling drum (10), there are secondary forks (8) for supporting the machine roll (6) against the reeling drum (10).