End wall of a pulp dryer, pulp dryer, and method for observing the inner parts of a pulp dryer
A dryer and end wall technology, applied in the direction of the dryer section, pulp dehydration, wing fan arrangement, etc., to achieve the effect of reducing the total additional length, reducing the number, and improving the safety of the operation
Active Publication Date: 2012-07-18
METSO PAPER INC
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Problems solved by technology
However, this solution does not fully allow for relatively easy execution of maintenance operations in the pulp dryer in all cases
Method used
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[0064] figure 1 A part of an end wall of a pulp dryer according to an embodiment of the invention is shown. The figure shows two end wall elements 2, 2', where the first end wall element 2 can be arranged in a position open towards the operating side of the pulp dryer and the second end wall element 2' can be arranged in a position towards the pulp dryer. A position where the drive side of the dryer is open. The opening direction of the end wall members 2, 2' is figure 1 Indicated by arrows a, a'. The end wall element 2 comprises four partial elements 3, 3', 3", 3"' arranged to open to the operating side in the manner of a folding door. The two partial members 3, 3' are provided with moving means 4, 4', such as grip handles, by means of which the partial members can be moved from the closed position to the open position. The second end wall element 2' comprises six partial elements each opening in the manner of a folding door. The individual partial elements are fixed to ...
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Abstract
The object of the invention is a pulp dryer's end wall (1), which comprises an upper edge and a lower edge, the distance between which edges defines the height of the end wall. An opening (5')for introducing the pulp web inside the pulp dryer or for bringing the web out of the pulp dryer is arranged between the upper and lower edges. One or more openable end wall elements (2, 2') for observing the inner parts of the pulp dryer and for performing maintenance operations is arranged between the upper and lower edges, the end wall element (2, 2') being arrangeable to a closed and an open positionin order to cover or to expose a turn roll (7,7') located in the inner part of the pulp dryer. The height of the openable end wall element is at least 50% of the distance between the axes of two turnrolls (7,7') of the pulp dryer that are one above the other and exposed in the open position. An object of the invention is also a pulp dryer and a method for observing the inner parts of the pulp dryer.
Description
technical field [0001] The invention relates to an end wall of a pulp dryer, a pulp dryer and a method for viewing the interior of a pulp dryer according to the preambles of the appended independent claims. Background technique [0002] In modern pulp dryers, the web formed from pulp, ie the pulp web, is conveyed along a multilayer path by floating on a cushion of air formed with blowing nozzles. The blowing nozzles are arranged in several overlapping, substantially horizontal nozzle levels having an approximate length to that of the pulp dryer. The pulp web is typically introduced into the pulp dryer via its first end, the so-called wet end. Usually, the pulp web enters the pulp dryer at the upper part of the pulp dryer through an inlet provided in the upper part at one end of the pulp dryer. The pulp web is then conveyed along the uppermost nozzle level of the pulp dryer to the second end of the dryer arrangement. A pulp dryer is usually provided with turning rolls at t...
Claims
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IPC IPC(8): D21F5/18E06B3/48D21F5/00
CPCD21F5/00D21F5/18D21C9/18
Inventor 约翰·林霍尔姆
Owner METSO PAPER INC