Turning-plate-type elastic hot wind isolating door

Abstract

The invention discloses a turning-plate-type elastic hot wind isolating door which is used for solving the problems such as non-tight close, over-long close operation time, and the like, of the traditional isolating door. The isolating door is characterized in that a connecting transverse rod is fixed by a telescopic shaft of a driving mechanism; the transverse rod is connected with two straight pulling rods; the other end of each straight pulling rod is connected with two regulating plates; slide guide wheels arranged at the connection parts; two articulated chains are utilized for a door plate and two supporting arms; the door plate is provided with two door pulling rods; and each door pulling rod and each supporting arm are all connected with the two regulating plates. The isolating door provided by the invention has the advantages of flexible opening and closure and tight sealing, ensures that the switching and checking of devices can be carried out conveniently, has short installation period, and can be installed within a minor repair period of 3-5 days, is simple and convenient to operate, has long service life, can be installed once without maintenance, and can be installed on air ducts of a random angle position and different cross section shapes.

Description

Technical field: [0001] The invention relates to a windshield door, in particular to an isolation door for opening and closing hot air at the entrance of a coal mill. Background technique: [0002] The hot air isolation door is a shut-off door installed on the hot air outlet of the boiler air preheater of the thermal power plant to the coal mill inlet pipe. It is mainly used for the isolation and maintenance of the coal mill to isolate the hot air and avoid the hot air at about 340 ° C from hurting maintenance personnel. [0003] Most of the current isolation doors are of the plug-in type, and there are phenomena such as poor isolation closure, long closing time, a large amount of air leakage, easy dust accumulation, high temperature switch failure, etc., resulting in hot air leakage and difficult system maintenance. Invention content: [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a flap-type elastic hot air isol...

AI Technical Summary

Problems solved by technology

[0003] Most of the current isolation doors are of the plug-in type, and there are phenomena such as poor isolation and closing, too long closing time, a large amount of air leakage, easy dust accumulation, high temperature switch failure, etc., resulting in hot air leakage and difficult system maintenance.

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