Dynamic drying simulator

Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor

Patent

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Details

34163, 34207, 34 89, F26B 320

Patent

active

044779810

ABSTRACT:
A simulator for simulating on a test sheet the actions of a dryer section of a paper making machine. The simulator includes a closed chamber to which there is connected a temperature and humidity control system to maintain the chamber in constant temperature and humidity during a test. A dryer fabric web is mounted within the chamber and is so guided as to have two parallel runs thereof in closely spaced relation. A holder is provided for mounting a test sheet between the two runs. Dryers are mounted above and below the two runs. The dryer fabric has openings therein which are selectively positioned in centered relation along the two runs so that the upper dryer may pass through an upper opening, pick up a test sheet and press the same against the dryer fabric of the lower run. Then the dryers are moved upwardly, the dryer fabric shifted the align the other opening along the lower run and then the lower dryer may pass through the lower opening and engage the test sheet from the opposite side so as to force the same upwardly against the dryer fabric of the upper run. The dryers may have circumferentially spaced separate heads and the dryers are mounted for timed rotation to present a new head upon each engagement of the test sheet by a respective one of the dryers.

REFERENCES:
patent: 4415610 (1983-11-01), Choinski
patent: 4438570 (1984-03-01), Dokoupil

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