Anti-cross valve without choke

Abstract

The invention relates to a non-choked flow anti-series valve for a discharge pipeline of a residential housing which has the function of preventing mixed smoke and flavors. The invention includes a flange opening, a valve core, a valve cover and an air guide hopper; the valve core is a cylindrical or a square cavity; a discharge opening is upward; the lower end of the valve cover is hinged with the lower part of the port of the valve core; the outside air guide hopper and the valve core are sealed as a whole to guide the air inside the valve core to be successfully discharged into the pipeline without any resistance. The bottom surface and the lower side surface of the whole valve are protected by the air guide hopper, the air flow inside the cavity of the valve core is not disturbed by any air flow; simultaneously the air guide hopper has the function of limiting the valve cover. The invention eliminates the traditional device the inside of the pipeline of which is provided with a guide pipe, thus fundamentally solving the problem that the inside of the traditional upper-opened discharge valve is attacked by the main air flow from the bottom surface and the lower side surface in the pipeline, thus leading the air flow to be resisted. Seen from the above, the non-choked flow anti-series valve for a discharge pipeline of a residential housing has a more reasonable structure, is simply mounted, seals tightly, has a low processing cost and discharges more smoothly.

Description

technical field [0001] The present invention is applicable to all kinds of residences, and can effectively prevent the phenomenon of odors in the exhaust ducts of each household and the phenomenon of cross-breeding between exhaust gases, which is conducive to the smooth discharge of exhaust gases into the exhaust ducts, and can effectively prevent external air return to the interior. technical background [0002] In the existing upper opening exhaust valve technology, the valve includes a flange with an air inlet, a valve core with an air outlet, and a valve cover that is arranged on the valve core to open upwards. The valve core has an inner cavity, and the inner cavity communicates with The air inlet and air outlet. But the disadvantage is that when the valve is working (the bonnet is open), the main airflow in the pipeline will flow from the gap between the valve bonnet and the bottom hinge of the spool, and the two lower sides of the relative position of the bonnet and ...

AI Technical Summary

Problems solved by technology

But the disadvantage is that when the valve is working (the bonnet is open), the main airflow in the pipeline will flow from the gap between the valve bonnet and the bottom hinge of the spool, and the two lower sides of the relative position of the bonnet and the spool when they work. It is connected in series to the inner cavity of the valve core, forming an air curtain in the cavity perpendicular to the airflow direction of the indoor discharge pipeline, that is, forming a resistance layer, which seriously interferes with the normal circulation of the air flow inside the valve core cavity, resulting in insufficient exhaust in the valve inner cavity. smooth, the air flow inside the valve cavity is blocked, and the exhaust performance of the entire flue is deteriorated

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