CN2050445U

CN2050445U - Paper-making machine drying cylinders hot-blast cover

Info

Publication number: CN2050445U
Application number: CN 89204079
Authority: CN
Inventors: 陈文胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-04-02
Filing date: 1989-04-02
Publication date: 1990-01-03

Abstract

The utility model relates to an improvement to paper making machine drying cylinders hot air cover in paper making industry. A hot air cover is provided with an air distributing chamber with an air inlet opening and a heat transferring chamber with an air exhaust opening, and the two chambers are communicated by a row of hot air pipes. Hot air is blown from the air inlet opening of the air distributing chamber and is exhausted from the air exhaust opening of the heat transferring chamber after heating moisture paper by the hot air pipe, and meanwhile, the moisture evaporated from the moisture paper is carried away to finish the drying process. Owing to adopting direct heating and uniform heating ways, paper making energy resource is largely economized, and drying capacity and paper making quality are increased.

Description

Paper-making machine drying cylinders hot-blast cover

The utility model is the improvement to paper industry paper machine dryer air bells cap.

Paper machine dryer and air bells cap thereof are the important mechanism that is used for dry paper in the paper-making process, the l Water Paper page or leaf is attached to dryer surface during dry paper, by drying cylinder the bottom surface of l Water Paper page or leaf is heated, paper machine dryer has air bells cap usually, air inlet and exhaust outlet are established in the top of air bells cap, the air inlet blowing hot-air, hot blast enters the air bells cap Heat Room from air inlet, the l Water Paper page frame table is heated, make the bottom surface of l Water Paper page or leaf and the heating that surface energy is subjected to drying cylinder and hot blast respectively, thereby make the moisture content accelerated evaporation of page, the moisture content of its evaporation is extracted out by air exhauster by the exhaust outlet of air bells cap, makes the l Water Paper page or leaf obtain drying.Present this dry technology is subjected to certain restriction, so long as relate to the hot blast efficiency of heating surface problem that how to improve air bells cap.The design of present air bells cap is the cavity that advances air bells cap from the top blowing hot-air, the hot blast of the close l Water Paper page or leaf in this cavity has obtained utilizing preferably, promptly do not extracted out exhaust outlet by air exhauster and also carry out heat exchange often away from the hot blast of l Water Paper page or leaf, thereby reduced the usefulness of air bells cap, in addition, this air bells cap is because from top air inlet blowing hot-air, make the l Water Paper of close air inlet be heated more, and be heated hot less away from the l Water Paper of air inlet, make and the each several part of the l Water Paper inequality of being heated influenced dry mass.

The purpose of this utility model provides the high paper machine dryer air bells cap of a kind of thermal efficiency, particularly a kind of can with the air bells cap of l Water Paper page or leaf uniform heat exchange.

Followingly in conjunction with the accompanying drawings the utility model is described: Fig. 1 be air bells cap along drying cylinder partial sectional view radially, Fig. 2 is that air bells cap is along the axial partial sectional view of drying cylinder.Wherein 1 is the gas distributing chamber that two air inlets 3 and 4 are set, the 2nd, the Heat Room of two exhaust outlets 5 and 6 is set, and the 7th, be communicated with the warm-air pipe of joining chamber and Heat Room, the 8th, uniform blowing aperture in the warm-air pipe, the 9th, drying cylinder.Air bells cap of the present utility model is provided with the gas distributing chamber 1 of air inlet and the air-exchanging chamber 2 of exhaust outlet is arranged, gas distributing chamber is at the drying cylinder axial location, change the chamber then in the radial position of drying cylinder 9, two Room are communicated with by row's blowing hot-air pipe 7, these warm-air pipes are evenly arranged on the close position of l Water Paper page or leaf in Heat Room, the bottom of the most close l Water Paper page or leaf is opened row's aperture 8 equably in every warm-air pipe, the hot blast that makes all enter warm-air pipe all directly blows on the l Water Paper page or leaf equably by these apertures, like this, hot blast at first blows into from the air inlet of air bells cap gas distributing chamber, hot blast enters the warm-air pipe of Heat Room after gas distributing chamber's distribution, from the uniform aperture of warm-air pipe, evenly blow to heat exchange on the l Water Paper page or leaf then, hot blast is discharged from the exhaust outlet of Heat Room after heat exchange, and taken away the moisture content that is evaporated on the l Water Paper page or leaf simultaneously, this process circulation is continuous, thereby finishes whole dry run.

Paper machine dryer air bells cap of the present utility model, because the mode that has adopted direct heating and evenly heated, save the papermaking energy greatly, improved drying capacity and papermaking quality, add hot-air as waste heat or the steam that utilizes the paper machine again by heat exchanger, carry out blowing hot wind, then energy-conservation effect is more obvious, can reach 20% to 30%.

Claims

1, a kind of paper machine dryer air bells cap, form by Heat Room and air inlet and exhaust outlet, the air bells cap that is characterised in that of the present utility model is provided with the gas distributing chamber and the Heat Room that exhaust outlet is arranged of air inlet, gas distributing chamber is at the axial location of drying cylinder, Heat Room is in the radial position of drying cylinder, and two Room are communicated with by row's blowing hot-air pipe.

2, air bells cap according to claim 1, it is characterized in that said warm-air pipe in Heat Room near evenly arranging on the position of l Water Paper page or leaf.

3, air bells cap according to claim 1 and 2 is characterized in that said warm-air pipe, and its bottom near the l Water Paper page or leaf is opened row's blowhole equably.