A flue check valve structure with automatic compensation of sealing surface angle

Abstract

The invention discloses a flue check valve structure with a sealing face angle automatic compensation function. The flue check valve structure comprises a frame body arranged in the circumferential direction of a flue opening and a blade covering the outer side of the frame body, wherein one side of the blade is connected with a first pivot; the first pivot is mounted on the frame body; the blade is connected with the first pivot through a base and a connecting piece; one end of the connecting piece is connected with the first pivot, and the other end of the connecting piece is connected with the base through a second pivot; the base is connected with the blade; and the base is arranged between the connecting piece and the blade, so that a space for relative rotation is formed between the blade and the connecting piece. According to the flue check valve structure with the sealing face angle automatic compensation function, the structure is simple, when a sealing clearance appears between the blade and the frame body, the automatic angle compensation of the blade can be achieved, the sealing clearance is eliminated, the blade is enabled to tightly fit the frame body, the flue opening is effectively sealed, and smoke in the flue is prevented from entering the indoor environment.

Description

technical field [0001] The invention relates to a flue check valve structure with automatic compensation of sealing surface angle. Background technique [0002] Traditional range hoods and integrated stove products, in standard urban buildings, will discharge the collected oil fume into the public flue of residential buildings. As a result, when the user on the upper floor does not use the hood or the wind pressure provided by the hood is low, it is easy to cause the oil fume in the flue to enter the user's room through the air duct, causing the indoor air to be turbid and odorous, which affects the health of the user. . Therefore, in general hoods and integrated stove products, they are equipped with flue check valve components. The current common principle of this component is to use gravity or spring force to turn the blades (which can be metal, plastic, etc.) that can only rotate in one direction. or silicone rubber, etc.) on the sealing surface of the frame to prevent...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of sealing gaps caused by machining errors in single-blade check valves, the invention provides a sealing surface angle automatic compensation that can automatically correct and compensate the sealing gaps, so that the blades can be more stably contacted and pressed against the sealing surface. Flue check valve structure

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