Adjustable type non-return fireproof valve

Abstract

The invention provides an adjustable type non-return fireproof valve, comprising an adjusting rod, a wear-resistant nylon rope, fixed bolts, a fireproof valve plate, a slide wheel, a first magnet piece, a counterweight block and a limiting steel ball, wherein upper and lower sides of the right end surface of the non-return fireproof valve body are symmetrically equipped with the fixed bolts; the fireproof valve plate is mounted inside the non-return fireproof valve body; the left side of the fireproof valve plate is equipped with the slide wheel; the lower side of the right end surface of the fireproof valve plate is welded with the counterweight block; the lower side of the right end surface of the fireproof valve plate is equipped with the first magnet piece; the adjusting rod is inserted into the fixed rod in a penetrating mode; the middle position of the ring-shaped side surface of the adjusting rod is wound with the war-resistant nylon rope; and the limiting steel ball is mounted at the right side inside a fixed rod. The design solves the problem that the original non-return fireproof valve is nonadjustable in opening angle, is reasonable in design, conveniently adjusts the opening angle inside the non-return fireproof valve, is simple in structure, and is low in use cost.

Description

technical field [0001] The invention is an adjustable check fire damper, which belongs to the technical field of fire check valves. Background technique [0002] The fire check valve is an integral metal component, mostly made of metal, and has the functions of preventing fire, preventing backflow of smoke and guiding air in the direction of the air outlet. The fire check valve is a valve installed on the public flue to prevent oily smoke and odor. According to the requirements of the Ministry of Construction and the State Environmental Protection Administration, the centralized flue check valve must be installed before the residential building is delivered to reduce pollution. At the same time, this It is also a symbol of the progress of human civilization. The traditional fire check valve usually has a small opening, because the opening size cannot be adjusted, which makes the fire check valve have poor air guiding effect when there is no fire, and the practicability need...

AI Technical Summary

Problems solved by technology

The traditional fire check valve usually has a small opening, because the opening size cannot be adjusted, which makes the fire check valve have poor air guiding effect when there is no fire, and the practicability needs to be improved. Now there is an urgent need for an adjustable check fire valve. Solve the above problems

Images