CN103243894B

CN103243894B - Fireproof non-returning exhaust valve

Info

Publication number: CN103243894B
Application number: CN201210027458.7A
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: 2015-05-20
Anticipated expiration: 2032-02-08
Also published as: CN103243894A

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 house shared ventilation system technical field, more particularly, relate to the one fire prevention exhaust check valve installed at common gas exhaust passage system air inlet port place.

Background technology

At present, be applied to the type exhaust check valve of 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 the defect overcoming prior art, and provide a kind of structure simple, the fire prevention exhaust check valve that cost is low, 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 being provided with air inlet port, be located at described panel side and the normally closed non-return sheet of the guide pipe be communicated with described air inlet port and the outlet of being located at described guide pipe, on described panel and the top being positioned at described non-return sheet is provided with gravity drop hammer and/or spring hammer, described gravity drop hammer and/or spring hammer are connected with described panel by fuse.

Particularly, described gravity drop hammer be using cement as gelling agent composite mortar solidification make.

Particularly, described spring hammer is formed with metal spring or metal clips.

Particularly, described panels outside is provided with the flange-interface be 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 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 described panel by securing member or welding manner.

Fire prevention exhaust check valve provided by the invention, under normal condition, when induced draft fan is vented in pipeline, normally closed non-return sheet is opened, and when stopping being vented in pipeline, non-return sheet falls after rise in normally off, prevents gas in pipelines from pouring in down a chimney; When fire occurs, fuse disconnects, and gravity drop hammer gravity or the effect of spring hammer elastic force, push down normally closed non-return sheet capping guide pipe passage, prevent fire spread; Therefore, the present invention realizes exhaust check valve with a kind of very simple, that cost is low structure and possesses non-return and fire-proof function simultaneously.

Accompanying drawing explanation

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

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 the embodiment of the present invention two provides;

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 the embodiment of the present invention three provides;

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

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

Detailed description of the invention

In order to make object of the present invention, technical scheme and advantage clearly understand, 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 explain the present invention, be not intended to limit the present invention.

Embodiment one

With reference to Fig. 1, Fig. 2, for the embodiment of the present invention one is prevented fires the schematic diagram of exhaust check valve structure.Fire prevention exhaust check valve in the present embodiment is located at house shared ventilation system air inlet port place.Described fire prevention exhaust check valve comprises the panel 100 being provided with air inlet port 110, is located at the guide pipe 200 that is communicated with inside panel 100 and with air inlet port 110 and is located at guide pipe 200 to export 210 places and the normally closed non-return sheet 300 that can seal guide pipe 200 passage.On panel 100 and the top being positioned at non-return sheet 300 is provided with a gravity drop hammer 400, gravity drop hammer 400 is connected with panel 100 by fuse 500.In the present embodiment, under normal condition, when induced draft fan is vented in pipeline, non-return sheet 300 is opened, and when stopping being vented in pipeline, non-return sheet 300 falls after rise in normally off, prevents gas in pipelines from pouring in down a chimney; When fire occurs, fuse 500 disconnects, gravity drop hammer 400 Action of Gravity Field, and push down non-return sheet 300 capping guide pipe 200 passage, prevent fire spread, in Fig. 2, dotted line represents gravity drop hammer 400 fireproofing state.In the present embodiment, on the top panel 100 of normally closed non-return sheet 300, establish gravity drop hammer 400, this very simple structure, just makes the non-return sheet 300 only with check function, possesses fire-proof function simultaneously.

In the present embodiment, gravity drop hammer 400 is cement, sandstone slurry curing forms.Adopt this material mass per volume large, cost is low, fire-resistant, not yielding under high temperature, it should be noted that, in order to prevent breaking of concrete gravity drop hammer 400, also can at its gravity drop hammer 400 kalamein, certainly, in the space that kalamein sheet is closed, gravity drop hammer 400 also can be sand, stone or other discrete material, and gravity drop hammer 400 can also make by fire-resistant of other, on-deformable material.

Further, the outside of panel 100 is provided with the flange-interface 600 be communicated with air inlet port 110, conveniently connects exhaust hose by flange-interface 600.

Particularly, in order to flange-interface 600 and the globality of panel 100, flange-interface 600 also can be stretched out by panel 100 and be formed.

Particularly, the corner of panel 100 is provided with installing hole 120, this outlet valve can be fixedly installed on 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 is by securing member or be welded and fixed with on panel 100.

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

In the present embodiment, guide pipe 200 to be enclosed containing panel 100 air inlet port 110 by a notch plate and panel 100 to form, its rectangular in cross-section, certain cross section also can be circle or other shape, 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 the present embodiment fire prevention exhaust check valve structural representation, the main difference part of the present embodiment and embodiment one is only, gravity drop hammer 400 hyperphoric become spring hammer 410.When fire occurs, after fuse disconnects, gravity drop hammer 400 pushes down normally closed non-return sheet 300 by gravity, and in the present embodiment, spring hammer 410 pushes down normally closed non-return sheet 300 capping guide pipe 200 passage by elastic force to prevent fire spread.In Fig. 4, dotted line represents normally closed non-return sheet 300 opening.Something in common, does not repeat.

Certainly, for strengthening plugging effect, also gravity drop hammer 400 and spring hammer 410 can be set simultaneously herein.

Embodiment three

With reference to Fig. 5, Fig. 6, for the fire prevention exhaust check valve structural representation of the present embodiment, the difference of the present embodiment and embodiment one is, the outer of guide pipe 200 encloses a Venturi effect plate 700, its objective is that Venturi effect plate 700 and guide pipe 200 are enclosed to be formed between allobar, like this, when pipeline ascending air passes through, this space produces transformer action, play the normal pressure reducing this place's air inlet port 110, even reach negative pressure state, play a kind of fixed structure and prevent gas in pipelines from pouring in down a chimney measure.Simultaneously, by transformer action, induced draft fan blast pressure value and air inlet port 110 place force value value difference are increased, thus increase to the capacity in pipeline, induced draft fan exhaust simultaneously enters transformation space formation rising jet and pulls out qigong effect to the generation of pipeline lower floor, makes system exhaust unimpeded.Something in common, does not repeat.

In the present embodiment, Venturi effect plate 700 adopts metal material to make, and it is fixed with on panel 100 by securing member or welding manner.Certainly, Venturi effect plate 700 also can adopt plastics or other material to make.

Embodiment four

With reference to Fig. 7, for the generalized section of embodiment of the present invention fire prevention exhaust check valve structure, the difference of the present embodiment and embodiment one is, panel 100 is provided with an opening 130, opening 130 place is provided with a normally closed check device 800 can extracted out/insert, normally closed check device 800 can be extracted out from panel 100 opening 150 place, facilitates the cleaning of normally closed check device 800, replacing.In Fig. 7, dotted line represents normally closed check device 800 non-return sheet opening.The present embodiment and other embodiment something in common, do not repeat.

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

These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims

1. a fire prevention exhaust check valve, comprise the panel being provided with air inlet port, be located at described panel side and the normally closed non-return sheet of the guide pipe be communicated with described air inlet port and the outlet of being located at described guide pipe, it is characterized in that: on described panel and the top being positioned at described non-return sheet is provided with gravity drop hammer and/or spring hammer, described gravity drop hammer and/or spring hammer are connected with described panel by fuse, under normal condition, when induced draft fan is vented in pipeline, non-return sheet is opened, when stopping being vented in pipeline, non-return sheet falls after rise in normally off, prevents gas in pipelines from pouring in down a chimney; When fire occurs, fuse disconnects, and gravity drop hammer Action of Gravity Field and/or the effect of spring hammer elastic force, push down non-return sheet capping guide pipe passage, prevent fire spread.

2. a kind of fire prevention exhaust check valve as claimed in claim 1, is characterized in that: described gravity drop hammer is that the composite mortar solidification using cement as gelling agent is made.

3. a kind of fire prevention exhaust check valve as claimed in claim 1, is characterized in that: described spring hammer is formed with metal spring or metal clips.

4. a kind of fire prevention exhaust check valve as claimed in claim 1, is characterized in that: described panels outside is provided with the flange-interface be communicated with described air inlet port.

5. a kind of fire prevention exhaust check valve as claimed in claim 1, 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 described opening.

6. 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 described guide pipe periphery.

7. a kind of fire prevention exhaust check valve as claimed in claim 6, is characterized in that: described panel, guide pipe, Venturi effect plate and non-return sheet all adopt metal material to make.

8. as claimed in claims 6 or 7 one fire prevention exhaust check valve, it is characterized in that: described guide pipe and described Venturi effect plate are fixed on described panel by securing member or welding manner.