Self-reliance sealing device of wind pipe connecting end

Abstract

The invention relates to a self-reliance sealing device of a wind pipe connecting end. An abutted end is respectively provided with a fixed wind pipe and a movable wind pipe that are abutted with flanges; the wind pipe is further provided with a connecting flange, a sealing valve is arranged between the connecting flange and the abutted flange, wherein a driving device of the sealing valve comprises a driving gear engaged with a rack on a driving rod, the other end of the driving rod penetrates the abutted flange in a sliding manner and is guided by the abutted flange; a guiding bearing ear handle is fixed on the driving rod and a side wall opposite to the rack and is sleeved on the guiding rod parallel to the driving rod in a sliding manner, two ends of the guiding rod are respectively fixed on the abutted flanged and the connecting flange, and the guiding rod between the guiding bearing ear handle and the abutted flange is provided with a pull force spring. In the invention, the cleanness of inner part of the wind pipe is well protected, the time for self-cleaning is shortened when the wind pipe is started next time, the electric control or the manual operation is unnecessary by staffs in the whole action process.

Description

technical field [0001] The invention relates to an airtight device, in particular to a self-forced airtight device at the connecting end of an air pipe. Background technique [0002] In the air conditioning system with fixed space and activity space, the connection between fixed space and activity space is generally connected by clean air duct. The closed multi-leaf regulating valve is generally used at the connection end of the above-mentioned purification air pipe as a closed device, which is superior to the parallel valve (that is, the open type), and is used to adjust the air volume of the air pipe, and can also be used for fresh air and return air. mixing adjustment. The structure and installation drawings of the closed split multi-leaf regulating valve are included in the "Construction Atlas of Construction Installation Engineering (Second Edition)" on pages 205-206, which are divided into manual drive types, such as Figure 1a and 1b As shown, among them 1. fan blad...

AI Technical Summary

Problems solved by technology

For a large air-conditioning system equipped with a closed multi-leaf control valve, when the activity space is open, if the manual drive is used, the staff needs to climb to a height of several meters above the activity space to operate, which is very dangerous and cannot be adjusted in time. The valve is closed; if the electric drive is used, the preparation of the corresponding components is cumbersome and the cost is high, and for some special occasions, the use of electric drive will increase the chance of accidents

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