A boiler secondary air pipe with adjustable air volume

Abstract

This utility model relates to the field of boiler secondary air duct technology, and discloses a boiler secondary air duct with adjustable air volume. The duct includes a secondary air duct with a damper plate fixedly connected to one side. A ventilation hole extending into the interior of the damper plate is formed on its outer wall. An adjusting cylinder is fixedly connected to the inner wall of the damper plate. Fixed baffles are fixedly connected to both sides of the adjusting cylinder. A contraction groove is formed inside the fixed baffle. A telescopic baffle is slidably connected inside the contraction groove via an adjusting mechanism. Multiple sets of vertical grooves are formed at the bottom of the telescopic baffle. This allows the device to block the ventilation holes of the damper plate using a wind-blocking component. By controlling the area of ​​the blocked ventilation holes, the air volume of the secondary air duct can be adjusted, thus preventing incomplete combustion due to insufficient air volume or excessive heat loss due to excessive air volume, thereby greatly improving the practicality of the device.

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