CN2697410Y

CN2697410Y - Filtering type fume exhausting check valve

Info

Publication number: CN2697410Y
Application number: CN 200420032480
Authority: CN
Inventors: 秦先军
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-09
Filing date: 2004-01-09
Publication date: 2005-05-04
Anticipated expiration: 2014-01-09

Abstract

The utility model relates to a filtering type fume exhausting check valve, which comprises a valve body 1, an airflow channel 2 is arranged inside the valve body 1, an inlet flue 3 and an outlet flue 4 are respectively arranged on both ends of the airflow channel 2, the outlet flue 4 is provided with a valve plate 5, and the valve plate 5 is connected with the valve body 1 through a rotary shaft 6, the inlet flue 3 is provided with a vane wheel 8 formed by a small vane 7 which can rotate under the function of the airflow, and the vane wheel 8 is connected with the valve body 1 through a vane wheel support frame 9. When the filtering type fume exhausting check valve exhausts flue gas, the vane wheel 8 is rotated by the flue gas, and when the vane wheel 8 rotates, the partial oily soil in the flue gas can be filtered by the vane wheel to reduce the oily soil which gathers on the valve plate 5 as much as possible, and the filtering type fume exhausting check valve reduces the possibility that the valve plate 5 is stuck by the oily soil as much as possible under the condition that the resistance increases a little, guaranteeing the valve runs normally for a long time.

Description

Filtering type smoke evacuation safety check

Technical field

The utility model relates to the safety check that prevents in the vertical central exhaust of a kind of house kitchen system that flue gas from flowing backwards.

Background technique

The oil smoke of by the smoke evacuation safety check range hood being extracted out in the prior art is arranged in into vertical central exhaust road, the greasy dirt problem is perplexing the long-time normal operation of the safety check of discharging fume always, the valve block of valve is easily clung by greasy dirt in use for some time, is difficult to be blown open.The part technology adopts the way that adds a slice oil cleaner screen to block the part greasy dirt and is attached on the valve block, but this resistance increase that makes flue gas be subjected to is very big, and needs often to clean oil cleaner screen, has had a strong impact on smoke discharging effect.If do not add oil cleaner screen, greasy dirt is easy to again attached on the valve gas, accumulated a period of time after, a large amount of greasy dirts will cling valve gas and be difficult to open.Therefore there is certain defective in prior art.

The model utility content

The purpose of this utility model provides a kind of difficult less filtering type smoke evacuation safety check of smoke evacuation resistance that is clung by greasy dirt.

The smoke evacuation safety check

Filtering type smoke evacuation safety check of the present utility model has valve body, be provided with air-flow path in the valve body, the two ends of air-flow path are respectively equipped with into mouth and smoke outlet, the place is provided with valve block at smoke outlet, valve block is connected with valve body by rotating shaft, be provided with the lobulate impeller that can rotate under the effect at air-flow entering the mouth place, impeller is connected with valve body by the impeller supporting frame.

The utility model compared with prior art has following advantage: when smoke evacuation, flue gas makes the impeller rotation, impeller when rotated, can filter the part greasy dirt in the flue gas, reduce greasy dirt accumulates on the valve block as far as possible, under the little situation of resistance increase, reduced valve block as much as possible, ensured the long-time normal operation of valve by the possibility that greasy dirt clings.

Content of the present utility model further illustrates with the following Examples.

Description of drawings

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the sectional view of the A-A direction of Fig. 1;

Fig. 3 is the right elevation of Fig. 1, wherein:

(1) valve body; (2) air-flow path; (3) advance mouth; (4) smoke outlet; (5) valve; (6) rotating shaft; (7) blade; (8) impeller; (9) impeller supporting frame.

Embodiment: referring to Fig. 1-Fig. 3, a kind of filtering type smoke evacuation safety check has valve body 1, be provided with air-flow path 2 in the valve body 1, the two ends of air-flow path 2 are respectively equipped with into mouth 3 and smoke outlet 4,4 places are provided with valve block 5 at smoke outlet, valve block 5 is connected with valve body 1 by rotating shaft 6, is provided with the impeller 8 that the small leaf 7 that can rotate under the effect at air-flow is formed entering mouth 3 places, and impeller 8 is connected with valve body 1 by impeller supporting frame 9.When smoke evacuation, flue gas makes impeller 8 rotations, and impeller 8 when rotated, can filter the part greasy dirt in the flue gas, reduce greasy dirt as far as possible and accumulate on the valve block 5, increase under the little situation at resistance and reduced valve block 5 as much as possible, ensured the long-time normal operation of valve by the possibility that greasy dirt clings.

Claims

1, a kind of filtering type smoke evacuation safety check has valve body, be provided with air-flow path in the valve body, the two ends of air-flow path are respectively equipped with into mouth and smoke outlet, the place is provided with valve block at smoke outlet, valve block is connected with valve body by rotating shaft, it is characterized in that entering the mouth place and being provided with lobulate impeller described, impeller is connected with valve body by the impeller supporting frame.