Abrégé

A method and an apparatus for determining the total peroxide content of a cellulose pulp suspension in the pulp suspension bleaching stage, wherein the bleaching chemical is peroxide. A sample is taken from the pulp suspension, which sample is measured in a measuring device (25, 25'). Before measuring, the pH of the sample is adjusted and after that the total peroxide content or the perhydroxyl content of the sample is measured, of which measurement the total peroxide content of the sample is determined.

Classes IPC  ?

• D21C 9/16 - Blanchiment avec des per-composés

Abrégé

A measuring device comprising at least one mixer structure (106) to receive a fibre suspension sample from at least one process part. Each mixer structure (106) is provided with a measuring unit, a feeding valve (208) for feeding feed liquid into a sample line (210) for pushing the sample in the sample line towards the measuring unit, a mixing valve structure (202) for feeding dilution liquid into the mixer structure (106) The mixer structure (106) mixes the flowing sample and the dilution liquid with one another in order to reduce the consistency of the sample. The measuring device measures from the first part of the mixed sample one property of the fibre suspension and the measuring device measures from the second part of the mixed sample a further property.

Classes IPC  ?

• G01N 1/38 - Dilution, dispersion ou mélange des échantillons

Abrégé

A moistening nozzle of a paper web comprises a frame (1) into which air and water are conducted. Inside the frame (1) there is arranged a water nozzle (2) wherewith water is conducted to an outlet of the moistening nozzle and an air nozzle wherewith air is correspondingly conducted to the outlet. The air nozzle (3) and the water nozzle (2) are arranged one within the other such that the air and the water form water mist that is blown out from the moistening nozzle. The air nozzle (3) is provided with an inner thread (10) that brings the air in swirling motion.

Classes IPC  ?

• D21G 7/00 - Dispositifs d'humidification
• B05B 7/10 - Pistolets pulvérisateurs; Appareillages pour l'évacuation produisant une turbulence à la sortie

Abrégé

The invention relates to a seal intended for sealing an axis pair, whereby the axes rotate in the same direction, the inner one of the axes is inside the outer axis and the phase difference of the axes is arranged to remain within prede-fined limits. The seal (200) is a tubular seal made of an elastic material and comprises at least two tube sections (202, 204) fixed to each other. Folds (212, 214) of the at least two tube sections (202, 204) have opposing twisting an-gles. One end of the seal (200) is fastened to the outer axis and the other end is fastened to the inner axis, and the seal (200) is arranged to twist by a torque proportional to the phase difference between the axes.

Classes IPC  ?

• F16J 15/52 - Joints d'étanchéité entre organes mobiles l'un par rapport à l'autre, par étanchéité sans surfaces mobiles l'une par rapport à l'autre, p.ex. des garnitures étanches aux fluides pour transmettre un mouvement au travers d'une paroi par soufflets ou diaphragmes d'étanchéité
• D21G 9/00 - Autres accessoires pour machines à fabriquer le papier
• G01N 11/14 - Recherche des propriétés d'écoulement des matériaux, p.ex. la viscosité, la plasticité; Analyse des matériaux en déterminant les propriétés d'écoulement en déplaçant un corps à l'intérieur du matériau en utilisant des corps en rotation, p.ex. moulinet