Adjustable automatic rotary smoke exhaust valve

Abstract

The invention disclose an adjustable automatic rotating smoke exhaust valve, which aims to solve the problems of difficulty in resetting a smoke exhaust valve and improve the quality and efficiency of smoke exhaust. The adjustable automatic rotating smoke exhaust valve comprises a fixed grid, a rotary grid, an opening and closing device and a control module, wherein the opening and closing device comprises a revolving shaft, a rotating disk, an adjustable limiter, a reset spring, a thermal fusing switch, a low-voltage direct-current motor, a fixed frame, a wiring box and a protection shell; the upper end of the protection shell is connected with the fixed grid; the low-voltage direct-current motor is arranged in the protection shell through the fixed frame; the rotating disk is fixed on the revolving shaft; the adjustable limiter comprises a fixed sheet and a rotary sheet; the fixed sheet is a hollow annular steel sheet; the outer side and the inner side of the annular steel sheet are respectively provided with a clamping protruding sheet and a blocking protruding sheet; the rotary sheet is fixed on the revolving shaft; the rotary grid is impeller-shaped; the fixed grid is in the form of a circular fan blade; the rotary grid is fixed on the revolving shaft; the fixed grid is fixed on a smoke exhaust air duct; two output power wires of the control module are connected with the low-voltage direct-current motor through two terminals in the wiring box of the opening and closing device.

Description

Technical field [0001] The invention relates to a fire-fighting equipment, in particular to a smoke exhaust valve used in a smoke prevention and exhaust system. Background technique [0002] In the smoke prevention and exhaust system, the current general smoke exhaust valve is a plate type electric opening and manual reset exhaust valve. In daily application, maintenance or inspection, it is quite difficult to reset, especially for high-rise factories, supermarkets and other smoke exhaust valves located in higher areas. Therefore, many users often do not open it in order to avoid trouble, resulting in a situation where it is not used for a long time but cannot be opened when it is used, causing great safety hazards. Fire accidents and smoke are the main cause of casualties; at the same time; , There are multiple exhaust valves on the exhaust air duct. The traditional plate-type exhaust valve will open at full capacity during a fire alarm. This will often cause the exhaust valve ...

AI Technical Summary

Problems solved by technology

In daily application, maintenance or testing, it is quite difficult to reset, especially for high-rise factory buildings, supermarkets and other smoke exhaust systems located in high areas.

Therefore, many users often do not open it in order to avoid trouble, resulting in the situation that it cannot be opened when it is not used for a long time, causing great safety hazards. In fire accidents, smoke is the main cause of casualties; , There are multiple smoke exhaust valves on the smoke exhaust duct. The traditional plate type smoke exhaust valve will be fully opened in the event of a fire, which often results in no wind speed and no discharge at the smoke exhaust valve port far from the smoke exhaust fan, which affects the smoke exhaust. quality and efficiency

Images