CN103243894A

CN103243894A - Fireproof non-returning exhaust valve

Info

Publication number: CN103243894A
Application number: CN2012100274587A
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: 2013-08-14
Anticipated expiration: 2032-02-08
Also published as: CN103243894B

Abstract

The invention relates to the technical field of house sharing exhaust systems and provides a fireproof non-returning exhaust valve. The fireproof non-returning exhaust valve comprises a panel, a guide pipe and a normally closed non-returning piece, wherein the panel is provided with an air inlet, the guide pipe is arranged on one side of the panel and communicated with the air inlet, and the normally closed non-returning piece is arranged on an outlet of the guide pipe. A gravity hammer and/or an elastic hammer are/is arranged on the panel and located above the non-returning piece and are/is connected with the panel through a fuse. According to the fireproof non-returning exhaust valve, the normally closed non-returning piece is opened when a draft fan exhausts air into a pipe in a normal state; the non-returning piece falls back to be in a normally closed state when the draft fan stops exhausting air into the pipe, and backward flowing of gas in the pipe is avoided. When a fire happens, the fuse is disconnected, the normally closed non-returning piece is pressed due to gravity of the gravity hammer or elasticity effect of the elastic hammer so as to cover a guide pipe channel, and fire spread is avoided. Accordingly, the non-returning exhaust valve simultaneously has non-returning and fireproof functions by means of an extremely simple and low-cost structure.

Description

A kind of fire prevention exhaust check valve

Technical field

The present invention relates to dwelling house shared ventilation system technical field, more particularly, relate to share a kind of fire prevention exhaust check valve that install at 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.

Summary of the invention

Technical problem to be solved by this invention 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 invention 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 described panel one side and the guide pipe that is communicated with described air inlet port and being located at described guide pipe, on the described panel and the top that is positioned at described non-return sheet is provided with gravity drop hammer and/or elastic force hammer, and described gravity drop hammer and/or elastic force hammer are connected with described panel by fuse.

Particularly, described gravity drop hammer is to make as the composite mortar curing of gelling agent with cement.

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

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

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

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

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

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

Fire prevention exhaust check valve provided by the invention, under the normal condition, during exhaust, open in the pipeline by normally closed non-return sheet for induced draft fan, and when stopping in the 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 disconnects, 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 present invention 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 embodiment of the invention 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 embodiment of the invention 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 embodiment of the invention 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 embodiment of the invention four.

The specific embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.

Embodiment one

With reference to Fig. 1, Fig. 2, be the schematic diagram of the embodiment of the invention 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.Described 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 by fuse 500.In the present embodiment, under the normal condition, during exhaust, open in the pipeline by non-return sheet 300 for induced draft fan, and when stopping in the 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 disconnects, and non-return sheet 300 capping guide pipes 200 passages are pushed down in gravity drop hammer 400 gravity effects, prevent fire spread, and dotted line is represented gravity drop hammer 400 fireproofing states among Fig. 2.In the present embodiment, establish gravity drop hammer 400 on the top of normally closed non-return sheet 300 panel 100, 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, 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 made by fire-resistant of other, on-deformable material.

Further, the outside of panel 100 is provided with the flange-interface 600 that is communicated with air inlet port 110, by 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, this outlet valve can be fixedly installed on the extract duct by 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 by 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 disconnected, 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 herein.

Embodiment three

With reference to Fig. 5, Fig. 6, fire prevention exhaust check valve structural representation for 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, by transformer action, induced draft fan blast pressure value and air inlet port 110 places' force value value differences are increased, thereby increase the capacity in the pipeline, induced draft fan exhaust simultaneously enters 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 make, its by securing member or welding manner fixing with panel 100 on.Certainly, Venturi effect plate 700 also can adopt plastics or other material to make.

Embodiment four

With reference to Fig. 7, generalized section for embodiment of the invention fire prevention exhaust check valve structure, the difference of present embodiment and embodiment one is, panel 100 is provided with an opening 130, 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 made for metal material.

Below only be preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.

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