CN202611199U

CN202611199U - Fireproof non-return exhaust valve

Info

Publication number: CN202611199U
Application number: CN 201220040400
Authority: CN
Inventors: 张琦
Original assignee: 张琦
Current assignee: Shenzhen Wanshaju Industrial Development Ltd.
Priority date: 2012-02-08
Filing date: 2012-02-08
Publication date: 2012-12-19
Anticipated expiration: 2022-02-08

Abstract

The utility model relates to the technical field of residential common exhaust systems, and provides a fireproof non-return exhaust valve which comprises a panel, a guide pipe and a normally closed non-return piece, wherein the panel is provided with a gas inlet, the guide pipe is arranged on one side of the panel and communicated with the gas inlet, and the normally closed non-return piece is arranged at an outlet of the guide pipe. A gravity hammer and/or elastic hammer is arranged on the panel, positioned above the non-return piece and connected with the panel through a fuse. When the fireproof non-return exhaust valve is normal, the normally closed non-return piece is opened when an exhaust fan exhausts gas into a pipeline, the non-return piece falls back to be normally closed when the exhaust fan stops exhausting the gas into the pipeline, and gas in the pipeline is prevented from flowing backwards. When a fire happens, the fuse is cut off, and a sealing cover guide pipe channel of the normally closed non-return piece is pressed to prevent fire spread under the gravity action of the gravity hammer or the elastic action of the elastic hammer. Therefore, the non-return exhaust valve simultaneously has non-return and fireproof functions by the aid of a quite simple and low-cost structure.

Description

A kind of fire prevention exhaust check valve

Technical field

The utility model relates to dwelling house shared ventilation system technical field, more particularly, relates to a kind of fire prevention exhaust check valve that install at shared exhaust duct system air inlet port place.

Background technology

At present, be applied to the type exhaust check valve of dwelling house shared ventilation system, its normally closed non-return sheet only has check function, does not possess fire-proof function.

The utility model content

The utility model technical problem to be solved is to overcome the defective of prior art, provides a kind of simple in structure, the fire prevention exhaust check valve that cost is low, and its non-return sheet not only has check function, also possesses fire-proof function simultaneously.

For solving the problems of the technologies described above; The utility model provides a kind of fire prevention exhaust check valve; Comprise the panel that is provided with air inlet port; The normally closed non-return sheet of the outlet of being located at said panel one side and the guide pipe that is communicated with said air inlet port and being located at said guide pipe, on the said panel and the top that is positioned at said non-return sheet are provided with gravity drop hammer and/or elastic force hammer, and said gravity drop hammer and/or elastic force hammer are connected with said panel through fuse.

Particularly, said elastic force hammer is to constitute with metal spring or metal clips.

Particularly, said panels outside is provided with the flange-interface that is communicated with said air inlet port.

Particularly, said panel is provided with an opening, is provided with the normally closed check device that can insert/extract out in the said opening.

Further, a Venturi effect plate is also established in said guide pipe periphery.

Further, said panel, guide pipe, Venturi effect plate and non-return sheet all adopt metal material to process.

Further, said guide pipe and said Venturi effect plate are fixed on the said panel through securing member or welding manner.

The fire prevention exhaust check valve that the utility model provides, under the normal condition, during exhaust, open by normally closed non-return sheet in pipeline for induced draft fan, and when stopping in pipeline exhaust, the non-return sheet falls after rise and is normally off, prevents that gas pours in down a chimney in the pipeline; When the fire generation, fuse breaks off, and normally closed non-return sheet capping guide pipe passage is pushed down in gravity drop hammer gravity or the effect of elastic force hammer elastic force, prevents fire spread; Therefore, the utility model realizes that with a kind of structure very simple, that cost is low exhaust check valve possesses non-return and fire-proof function simultaneously.

Description of drawings

Fig. 1 is the schematic top plan view of the fire prevention exhaust check valve that provides of the utility model embodiment one;

Fig. 2 is the generalized section of Fig. 1;

Fig. 3 is the schematic top plan view of the fire prevention exhaust check valve that provides of the utility model embodiment two;

Fig. 4 is the generalized section of Fig. 3;

Fig. 5 is the schematic top plan view of the fire prevention exhaust check valve that provides of the utility model embodiment three;

Fig. 6 is the generalized section of Fig. 5;

Fig. 7 is the generalized section of the fire prevention exhaust check valve that provides of the utility model embodiment four.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Embodiment one

With reference to Fig. 1, Fig. 2, be the sketch map of the utility model embodiment one fire prevention exhaust check valve structure.Fire prevention exhaust check valve in the present embodiment is located at dwelling house shared ventilation system air inlet port place.Said fire prevention exhaust check valve comprises the panel 100 that is provided with air inlet port 110, is located at panel 100 inboards and the guide pipe 200 that is communicated with air inlet port 110 and is located at the normally closed non-return sheet 300 that guide pipe 200 exports 210 places and can seal guide pipe 200 passages.On the panel 100 and top that is positioned at non-return sheet 300 is provided with a gravity drop hammer 400, and gravity drop hammer 400 is connected with panel 100 through fuse 500.In the present embodiment, under the normal condition, during exhaust, open by non-return sheet 300 in pipeline for induced draft fan, and when stopping in pipeline exhaust, non-return sheet 300 falls after rise and is normally off, prevents that gas pours in down a chimney in the pipeline; When the fire generation, fuse 500 breaks off, and non-return sheet 300 capping guide pipes 200 passages are pushed down in gravity drop hammer 400 actions of gravity, prevent fire spread, and dotted line is represented gravity drop hammer 400 fireproofing states among Fig. 2.In the present embodiment, on the top of normally closed non-return sheet 300 panel 100, establish gravity drop hammer 400, this very simple structure just makes the non-return sheet 300 that only has check function, possesses fire-proof function simultaneously.

In the present embodiment, gravity drop hammer 400 forms for cement, sandstone slurry curing.Adopt this material unit volume mass big, cost is low, and is fire-resistant; Not yielding under the high temperature, need to prove, in order to prevent breaking of concrete gravity drop hammer 400; Also can be at its gravity drop hammer 400 kalameins, certainly, in the space of kalamein sheet sealing; Gravity drop hammer 400 also can be sand, stone or other discrete material, and gravity drop hammer 400 can also be used other fire-resistant, on-deformable material.

Further, the outside of panel 100 is provided with the flange-interface 600 that is communicated with air inlet port 110, through the flange-interface 600 convenient exhaust hoses that connect.

Particularly, for the globality of flange-interface 600 with panel 100, flange-interface 600 also can outwards be stretched by panel 100 and form.

Particularly, four jiaos of panel 100 are provided with installing hole 120, can this outlet valve be fixedly installed on the extract duct through installing hole 120.

Preferably, in the present embodiment, panel 100, guide pipe 200, non-return sheet 300 all adopt metal material to make, and guide pipe 200 passes through securing member or welds on fixing and the panel 100.

Preferably, in the present embodiment, fuse 500 adopts fuse link, and the fuse link cost is low.

In the present embodiment; Guide pipe 200 is to contain panel 100 air inlet ports 110 by a notch plate and panel 100 to surround and form; Its cross section is rectangular, and the cross section also can be circle or other shape certainly, and guide pipe also can be formed by connecting the air inlet port 110 of a bend pipe lower end and panel 100.

Embodiment two

With reference to Fig. 3, Fig. 4, be present embodiment fire prevention exhaust check valve structural representation, the main difference part of present embodiment and embodiment one only is, gravity drop hammer 400 is hyperphoric to have become elastic force to hammer 410 into shape.When the fire generation, after fuse broke off, gravity drop hammer 400 was to push down normally closed non-return sheet 300 by gravity, and in the present embodiment, elastic force hammer 410 is to push down normally closed non-return sheet 300 capping guide pipes 200 passages by elastic force to prevent fire spread.Dotted line is represented normally closed non-return sheet 300 openings among Fig. 4.Something in common is not given unnecessary details.

Certainly, for strengthening plugging effect, gravity drop hammer 400 and elastic force hammer 410 can be set simultaneously also here.

Embodiment three

With reference to Fig. 5, Fig. 6, be the fire prevention exhaust check valve structural representation of present embodiment, the difference of present embodiment and embodiment one is; The outer periphery one Venturi effect plate 700 of guide pipe 200; Its objective is that Venturi effect plate 700 and guide pipe 200 are surrounded to be formed between allobar, like this, when the pipeline ascending air passes through; This space produces transformer action; Play the normal pressure that reduces this place's air inlet port 110, even reach negative pressure state, play a kind of fixed structure and prevent that gas pours in down a chimney measure in the pipeline.Simultaneously; Through transformer action, induced draft fan blast pressure value and air inlet port 110 place's force value value differences are increased, thereby increase the capacity in pipeline; Induced draft fan exhaust simultaneously gets into transformation space formation rising jet qigong effect is pulled out in the generation of pipeline lower floor, makes system exhaust unimpeded.Something in common is not given unnecessary details.

In the present embodiment, Venturi effect plate 700 adopts metal material to process, its through securing member or welding manner fixing with panel 100 on.Certainly, Venturi effect plate 700 also can adopt plastics or other material.

Embodiment four

With reference to Fig. 7; Be the prevent fires generalized section of exhaust check valve structure of the utility model embodiment; The difference of present embodiment and embodiment one is that panel 100 is provided with an opening 130, and opening 130 places are provided with the normally closed check device 800 that can extract out/insert; Normally closed check device 800 can be extracted out from panel 100 openings 150 places, cleaning, the replacing of convenient normally closed check device 800.Dotted line is represented normally closed check device 800 non-return sheet openings among Fig. 7.Present embodiment and other embodiment something in common are not given unnecessary details.

In the present embodiment, this normally closed check device 800 is processed for metal material.

More than be merely the preferred embodiment of the utility model,, any modification of being done within all spirit at the utility model and the principle, be equal to and replace and improvement etc., all should be included within the protection domain of the utility model not in order to restriction the utility model.

Claims

One kind the fire prevention exhaust check valve; Comprise the panel that is provided with air inlet port; The normally closed non-return sheet of the outlet of being located at said panel one side and the guide pipe that is communicated with said air inlet port and being located at said guide pipe; It is characterized in that: on the said panel and the top that is positioned at said non-return sheet is provided with gravity drop hammer and/or elastic force hammer, and said gravity drop hammer and/or elastic force hammer are connected with said panel through fuse.
2. a kind of fire prevention exhaust check valve as claimed in claim 1 is characterized in that: said elastic force hammer is to constitute with metal spring or metal clips.
3. a kind of fire prevention exhaust check valve as claimed in claim 1, it is characterized in that: said panels outside is provided with the flange-interface that is communicated with said air inlet port.
4. a kind of fire prevention exhaust check valve as claimed in claim 1, it is characterized in that: said panel is provided with an opening, is provided with the normally closed check device that can insert/extract out in the said opening.
5. a kind of fire prevention exhaust check valve as claimed in claim 1 is characterized in that: a Venturi effect plate is also established in said guide pipe periphery.
6. a kind of fire prevention exhaust check valve as claimed in claim 5 is characterized in that: said panel, guide pipe, Venturi effect plate and non-return sheet all adopt metal material to process.
7. like claim 5 or 6 described a kind of fire prevention exhaust check valves, it is characterized in that: said guide pipe and said Venturi effect plate are fixed on the said panel through securing member or welding manner.