CN206093073U - Fire prevention non return exhaust airway - Google Patents
Fire prevention non return exhaust airway Download PDFInfo
- Publication number
- CN206093073U CN206093073U CN201620999346.1U CN201620999346U CN206093073U CN 206093073 U CN206093073 U CN 206093073U CN 201620999346 U CN201620999346 U CN 201620999346U CN 206093073 U CN206093073 U CN 206093073U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve block
- fire prevention
- exhaust outlet
- duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a fire prevention non return exhaust airway, including main air duct, exhaust pipe, check valve and fire prevention valve, the vent has been seted up on the main air duct lateral wall, the exhaust pipe both ends are air intake and air exit respectively, and the exhaust pipe is by air intake to air exit tilt up to cross -sectional area steadilys decrease gradually, the air intake meets with the vent, air exit and main air duct intercommunication, the check valve is installed to the air exit inboard, and go up along installing the fire prevention valve in the air exit outside, the check valve includes valve block shaft and a plurality of valve blocks, and the valve block shaft level is fixed on row inner wall of the tuyere, and valve block shaft and the above piecemeal activity of valve block focus level straight line are connected, and the valve block can cover whole air exit, be equipped with bellied separation blade on the logical inner wall of the tuyere that the valve block lower extreme corresponds, the valve block can only be followed the air exit and outwards raiseed. The utility model discloses a check valve adopts a plurality of valve blocks, has reduced carminative resistance, when fire prevention, smoke protection gas pour in down a chimney, possesses the smooth and easy advantage of exhaust.
Description
Technical field
The utility model belongs to exhausting duct technical field, and in particular to one kind fire prevention non-return exhausting duct.
Background technology
With high residential building it is increasing, the also more and more higher of the requirement to house air draft.Kitchen in existing residential housing
Common flue is adopted room, toilet exhausting duct more, in order to prevent flue gas from pouring in down a chimney, check-valves is provided with blast pipe, meanwhile, in order to
Fire spread is prevented, fire resisting damper is provided with check-valves, but there is complex structure or exhaust resistance is big, be vented not smooth etc. enough
Problem.
Utility model content
The purpose of this utility model is for the problems referred to above of the prior art, there is provided a kind of simple structure, exhaust are suitable
Smooth fire prevention non-return exhausting duct.
To realize above-mentioned utility model purpose, the utility model employs following technical scheme：
One kind fire prevention non-return exhausting duct, including main air duct, exhaust duct, check (non-return) valve and fire resisting damper；On the wall of the main air duct side
Offer ventilating opening；The exhaust duct two ends are respectively air inlet and exhaust outlet, and exhaust duct is from air inlet to exhaust outlet to updip
Tiltedly, and cross-sectional area gradually successively decreases；Air inlet connects with ventilating opening, and exhaust outlet is connected with main air duct；Install exhaust outlet inner side
There is check (non-return) valve, the upper edge in exhaust outlet outside is provided with fire resisting damper；The check (non-return) valve includes valve shaft and some pieces of valve blocks, valve shaft water
Flat to be fixed on exhaust outlet inwall, valve shaft is connected with piecemeal activity more than valve block center of gravity horizontal linear, and valve block can be covered in
Whole exhaust outlet；Ventilating opening inwall corresponding to valve block lower end is provided with the catch of projection, and valve block can only outwards be lifted from exhaust outlet
Rise.
Above-mentioned fire resisting damper includes fire prevention valve block and hot melt support bar；Fire prevention valve block lower edge is hinged with the upper edge in exhaust outlet outside；
Exhaust outlet edge is provided with the groove being engaged with hot melt support bar, heats one end of support bar with the activity of fire prevention valve block side even
Connect, the other end for heating support bar is against in groove, supports fire prevention valve block.
Above-mentioned hot melt support bar is detachably connected respectively two support bars and constitutes by one piece of hot melt piece two ends.
Said exhaust mouth plane is 0 ° -45 ° with the angle of horizontal plane.
Above-mentioned valve block plane is inclined relative to horizontal 1 ° -45 °.
Annulus is provided with perpendicular to valve block plane on above-mentioned valve block, circle diameter is more than the valve block shaft diameter；Valve shaft is worn
Annulus is crossed, two ends are mutually fixed with exhaust outlet inwall.
Compared to prior art, advantage of the present utility model is：
The utility model fire prevention non-return exhausting duct exhaust duct be inclined upwardly setting and cross-sectional area gradually successively decrease, make gas
Rate of flow of fluid increases, and negative pressure is formed at exhaust outlet, promotes that flue gas is smooth in main air duct to discharge upwards；In addition, check (non-return) valve is adopted
Some pieces of valve blocks, can just make valve block kick up without the need for very big air pressure, so as to reduce the resistance of exhaust, make the smooth row of discharge of flue gas
Tracheae；Using fire-proof valve structure it is simple and reusable.The utility model possesses while fire prevention, flue gas pour in down a chimney
The advantage of smooth in exhaust.
Description of the drawings
Fig. 1 is the sectional view of the utility model embodiment one.
Fig. 2 is exhaust outlet front schematic view in Fig. 1.
Fig. 3 is the sectional view of the utility model embodiment two.
Fig. 4 is exhaust outlet front schematic view in Fig. 3.
In figure：1. main air duct, 11. ventilating openings, 2. exhaust duct, 21. air inlets, 22. exhaust outlets, 23. catch, 24. grooves,
3. check (non-return) valve, 31. valve blocks, 32. valve shafts, 33. annulus, 4. fire resisting damper, 41. fire prevention valve blocks, 42. hot melt support bars, 421. is hot
Fuse piece, 422. support bars.
Specific embodiment
With reference to embodiments and its accompanying drawing is further non-limitingly described in detail to technical solutions of the utility model.
First, basic structure of the present utility model
1st, embodiment one
As illustrated in fig. 1 and 2, fire prevention non-return exhausting duct, including main air duct 1, exhaust duct 2, check (non-return) valve 3 and fire resisting damper 4；Main wind
Ventilating opening 11 is offered on the side wall of road 1；The two ends of exhaust duct 2 are respectively air inlet 21 and exhaust outlet 22, and exhaust duct 2 is by air inlet 21
It is inclined upwardly to exhaust outlet 22, and cross-sectional area gradually successively decreases；Air inlet 21 connects with ventilating opening 11, exhaust outlet 22 and main wind
Road 1 is connected；The plane of exhaust outlet 22 is 0 ° with the angle of horizontal plane, and the inner side of exhaust outlet 22 is provided with check (non-return) valve 3, the outside of exhaust outlet 22
Upper edge is provided with fire resisting damper 4；Check (non-return) valve 3 includes valve shaft 32 and three pieces of valve blocks 31, more than the center of gravity horizontal linear of valve block 31 vertical
Annulus 33 is provided with valve block plane, annulus 33 is with diameter greater than the diameter of valve shaft 32；Valve shaft 32 passes through annulus 33, keeps level,
Two ends are mutually fixed with the inwall of exhaust outlet 22, and the plane of valve block 31 is inclined relative to horizontal 1 °, and valve block 31 can cover in whole air draft
Mouth 22；The inwall of ventilating opening 22 corresponding to the lower end of valve block 31 be provided with projection catch 23, valve block 31 can only from exhaust outlet 22 to
Start outward；Fire resisting damper 4 includes fire prevention valve block 41 and hot melt support bar 42；The fire prevention lower edge of valve block 41 is upper with the outside of exhaust outlet 22 along hinge
Connect；The edge of exhaust outlet 22 is provided with the groove 24 being engaged with hot melt support bar 42, heats one end and the fire prevention valve block of support bar 42
41 sides are flexibly connected, and the other end for heating support bar 42 is against in groove 24, support fire prevention valve block 41；Hot melt support bar 42
Two support bars 422 are bolted respectively by one piece of hot melt piece 421 two ends to constitute.
2nd, embodiment two
As shown in Figures 3 and 4, fire prevention non-return exhausting duct, including main air duct 1, exhaust duct 2, check (non-return) valve 3 and fire resisting damper 4；Main wind
Ventilating opening 11 is offered on the side wall of road 1；The two ends of exhaust duct 2 are respectively air inlet 21 and exhaust outlet 22, and exhaust duct 2 is by air inlet 21
It is inclined upwardly to exhaust outlet 22, and cross-sectional area gradually successively decreases；Air inlet 21 connects with ventilating opening 11, exhaust outlet 22 and main wind
Road 1 is connected；The plane of exhaust outlet 22 is 45 ° with the angle of horizontal plane, and the inner side of exhaust outlet 22 is provided with check (non-return) valve 3, outside exhaust outlet 22
Edge is provided with fire resisting damper 4 on side；Check (non-return) valve 3 includes valve shaft 32 and four pieces of valve blocks 31, more than the center of gravity horizontal linear of valve block 31 hangs down
Directly annulus 33 is provided with valve block plane, annulus 33 is with diameter greater than the diameter of valve shaft 32；Valve shaft 32 passes through annulus 33, keeps water
Flat, two ends are mutually fixed with the inwall of exhaust outlet 22, and the plane of valve block 31 is inclined relative to horizontal 45 °, and valve block 31 can be covered in entirely
Exhaust outlet 22；The inwall of ventilating opening 22 corresponding to the lower end of valve block 31 is provided with the catch 23 of projection, and valve block 31 can only be from exhaust outlet
22 outwards start；Fire resisting damper 4 includes fire prevention valve block 41 and hot melt support bar 42；In the fire prevention lower edge of valve block 41 and the outside of exhaust outlet 22
Edge is hinged；The edge of exhaust outlet 22 is provided with the groove 24 being engaged with hot melt support bar 42, heats one end and the fire prevention of support bar 42
The side of valve block 41 is flexibly connected, and the other end for heating support bar 42 is against in groove 24, supports fire prevention valve block 41；Hot melt is supported
Bar 42 is bolted respectively two support bars 422 and constitutes by one piece of hot melt piece 421 two ends.
2nd, operation principle of the present utility model
When the exhaust fan at ventilating opening is opened, flue gas is entered in exhaust duct from ventilating opening Jing air inlets, by
It is inclined upwardly to exhaust outlet by air inlet in exhaust duct, flue gas upwards and keeps high flow velocities outwards to kick up valve along exhaust duct
Piece, so as to flow into main air duct, the discharge directions of exhaust duct are unanimous on the whole with the airflow direction in main air duct, and exhaust duct is transversal
Area gradually successively decreases, and increases gas flow rate, and negative pressure is formed at exhaust outlet, promotes flue gas smooth to upstream in main air duct
It is dynamic；In addition, check (non-return) valve adopts some pieces of valve blocks, valve block can be just set to kick up without the need for very big air pressure, so as to reduce the resistance of exhaust
Power, makes the smooth discharge blast pipe of flue gas.When exhaust fan is not switched on, check (non-return) valve under gravity seals exhaust outlet, prevents
Flue gas pours in down a chimney the generation of phenomenon.
When there is no fire, fire prevention valve block by hot melt they sup-port on the outside of the exhaust outlet on edge, in opened condition；
When a fire, the hot melt piece on hot melt support bar is heated and deforms upon or fuse, and fire prevention valve block is covered under gravity
On exhaust outlet, exhaust outlet is closed, prevent spreading for fire and flue gas.Need to change after the fusing of hot melt piece or deformation, only need
The hot melt piece unloaded on hot melt support bar is changed i.e. reusable.
It is pointed out that above-described embodiment is only to illustrate technology design of the present utility model and feature, its object is to
Allow person skilled in the art will appreciate that content of the present utility model and implement according to this, this practicality can not be limited with this new
The protection domain of type.All equivalence changes made according to the utility model Spirit Essence or modification, all should cover new in this practicality
Within the protection domain of type.
Claims (6)
1. a kind of fire prevention non-return exhausting duct, it is characterised in that：Including main air duct, exhaust duct, check (non-return) valve and fire resisting damper；The main wind
Ventilating opening is offered on the wall of road side；The exhaust duct two ends are respectively air inlet and exhaust outlet, and exhaust duct is by air inlet to air draft
Mouth is inclined upwardly, and cross-sectional area gradually successively decreases；Air inlet connects with ventilating opening, and exhaust outlet is connected with main air duct；Exhaust outlet
Inner side is provided with check (non-return) valve, and the upper edge in exhaust outlet outside is provided with fire resisting damper；The check (non-return) valve includes valve shaft and some pieces of valve blocks,
Valve shaft is horizontally fixed on exhaust outlet inwall, and valve shaft is connected with piecemeal activity more than valve block center of gravity horizontal linear, valve block
Whole exhaust outlet can be covered in；Ventilating opening inwall corresponding to valve block lower end is provided with the catch of projection, and valve block can only be from air draft
Mouth is outwards started.
2. it is according to claim 1 fire prevention non-return exhausting duct, it is characterised in that：The fire resisting damper includes fire prevention valve block and heat
Molten support bar；Fire prevention valve block lower edge is hinged with the upper edge in exhaust outlet outside；Exhaust outlet edge is provided with what is be engaged with hot melt support bar
Groove, one end for heating support bar is flexibly connected with fire prevention valve block side, and the other end for heating support bar is against in groove, is supported
Play fire prevention valve block.
3. it is according to claim 2 fire prevention non-return exhausting duct, it is characterised in that：The hot melt support bar is by one piece of hot melt piece
Two ends are detachably connected respectively two support bars and constitute.
4. it is according to claim 2 fire prevention non-return exhausting duct, it is characterised in that：The folder of the exhaust outlet plane and horizontal plane
Angle is 0 ° -45 °.
5. it is according to claim 2 fire prevention non-return exhausting duct, it is characterised in that：The valve block plane is with respect to the horizontal plane inclined
Oblique 1 ° -45 °.
6. it is according to claim 2 fire prevention non-return exhausting duct, it is characterised in that：Set perpendicular to valve block plane on the valve block
There is annulus, circle diameter is more than the valve block shaft diameter；Valve shaft passes through annulus, and two ends are mutually fixed with exhaust outlet inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999346.1U CN206093073U (en) | 2016-08-30 | 2016-08-30 | Fire prevention non return exhaust airway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999346.1U CN206093073U (en) | 2016-08-30 | 2016-08-30 | Fire prevention non return exhaust airway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206093073U true CN206093073U (en) | 2017-04-12 |
Family
ID=58477126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620999346.1U Active CN206093073U (en) | 2016-08-30 | 2016-08-30 | Fire prevention non return exhaust airway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206093073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404794A (en) * | 2018-12-05 | 2019-03-01 | 陈辉 | A kind of LED floor lamp |
| CN109539036A (en) * | 2018-12-05 | 2019-03-29 | 陈辉 | A kind of LED floor lamp of automatic water-removing mist |
-
2016
- 2016-08-30 CN CN201620999346.1U patent/CN206093073U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404794A (en) * | 2018-12-05 | 2019-03-01 | 陈辉 | A kind of LED floor lamp |
| CN109539036A (en) * | 2018-12-05 | 2019-03-29 | 陈辉 | A kind of LED floor lamp of automatic water-removing mist |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206093073U (en) | Fire prevention non return exhaust airway | |
| CN202769935U (en) | Optimization type and strong suction type gas water heater | |
| CN106224992B (en) | It is universal come wind rain-proof help fume extractor | |
| CN206176708U (en) | Fuel gas hot water device | |
| CN209131150U (en) | A kind of more backhaul plates of S type expansion change formula liner | |
| CN206053243U (en) | A kind of fire prevention reverse-filling exhausting duct | |
| CN206053246U (en) | Anti- smoke blowing exhausting duct | |
| CN206094169U (en) | Combustion -supporting device of secondary air supply of heating stove | |
| CN209369249U (en) | A kind of anti-return building ventilation flue | |
| CN207299296U (en) | A kind of wall-mounted fresh air machine of side wall | |
| CN203743517U (en) | Flow-guide fire-prevention non-return device for air duct | |
| CN208011725U (en) | Heat compensation system | |
| CN209558945U (en) | A kind of novel full premix heat exchanger device | |
| CN103759281B (en) | Self adaptation wind direction and can link and regulate the natural induced draft fume extractor of resistance | |
| CN207962731U (en) | Passive type secondary ventilation device on gas-cooker | |
| CN204267820U (en) | A kind of flue water conservancy diversion fire prevention check device | |
| CN206723514U (en) | A kind of flow-guiding non-return valve | |
| CN206207746U (en) | A kind of outdoor gas water heater weather proof petticoat pipe | |
| CN206496373U (en) | A kind of energy-saving and emission-reduction stove | |
| CN209638459U (en) | A kind of gas mixing unit that flue gas is flow backwards | |
| CN205783829U (en) | Wall-hung boiler and fume collecting hood thereof | |
| CN207196535U (en) | Boiler air flue anti-blockage structure | |
| CN209726268U (en) | Warming stove | |
| CN208089912U (en) | A kind of reduction box heat sink | |
| CN210373547U (en) | Coal gasification ring convenient to adjust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |