Drying device applied to producing high-breathability paper products in papermaking industry

Abstract

The invention discloses a drying device applied to producing high-breathability paper products in the papermaking industry. The drying device comprises a circulating fan, a heating device and a drying room which are sequentially connected through a circulating air channel, a cellular circular mesh rotation barrel is arranged inside the drying room, and an air outlet of the cellular circular mesh rotation barrel is connected with an air inlet of the circulating fan through an air sucking drum. A moisture removal air channel which is communicated with the outside and is provided with a control damper is arranged on the circulating air channel between the circulating fan and a combustor. The cellular circular mesh rotation barrel is arranged inside the drying room in the modes that the cellular circular mesh rotation barrel shares the same axis with the air sucking drum and is communicated with the inner cavity of the air sucking drum. The two ends of the cellular circular mesh rotation barrel are combined with a drying room front wallboard and a drying room rear wallboard respectively through connecting pieces. A transmission shaft of the cellular circular mesh rotation barrel is combined with a motor through a speed reducing mechanism. An air inlet of the drying room is formed in the side wall of the drying room which is parallel to the axis of the cellular circular mesh rotation barrel.

Description

technical field [0001] The invention relates to a drying device used in the papermaking industry to produce paper products with high air permeability. Background technique [0002] Papermaking has a long history in our country, and the traditional wet paper drying is carried out on the surface of the drying cylinder. The wet paper is pasted on the surface of the drying cylinder, and the heat is transferred from the drying cylinder to the wet paper, and the purpose of drying is achieved by heating and evaporating water. When the wet paper contacts with the drying cylinder, it starts to heat, the moisture in the wet paper is gradually evaporated, and the moisture in the inner layer of the wet paper diffuses to the surface. The speed of moisture evaporation of wet paper is not only determined by the heat transferred from the drying cylinder to the wet paper, but also related to the temperature of the air around the wet paper surface and the partial pressure of water vapor. Th...

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Problems solved by technology

At present, for the wet paper industry with low air permeability, such as culture, packaging and daily life, the drying cylinder is mostly used. The above method is effective, but for the wet paper with high air permeability, such as air filtration, the efficiency of the above method is relatively low. Low, easy to harden the paper, poor hand feeling, affecting air permeability

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