CN203743517U - Flow-guide fire-prevention non-return device for air duct - Google Patents
Flow-guide fire-prevention non-return device for air duct Download PDFInfo
- Publication number
- CN203743517U CN203743517U CN201320713603.7U CN201320713603U CN203743517U CN 203743517 U CN203743517 U CN 203743517U CN 201320713603 U CN201320713603 U CN 201320713603U CN 203743517 U CN203743517 U CN 203743517U
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- fixed base
- baffle plate
- torque spring
- fixed
- thermal sensitive
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Abstract
The utility model discloses a flow-guide fire-prevention non-return device for an air duct. The flow-guide fire-prevention non-return device comprises a fixed base with a channel sleeves the outlet of the air duct; a baffle plate for sealing the channel is mounted on the fixed base and is movably connected to the fixed base through the bottom of the baffle plate; a control device is mounted on the fixed base and used for controlling the opening angle of the baffle plate according to the change of pressure on the baffle plate. According to the flow-guide fire-prevention non-return device, each of the air inlet and the air outlet both takes the shape of a circular tube, and the air exhaust direction is the same as the direction of air flow in an air exhaust passage, so that oil fume can be exhausted more smoothly and no dead space exists; a temperature control device ensures that the baffle plate can be forcibly closed when the temperature of a public flue reaches a high-temperature emergency state, and after the high-temperature emergency state is released, a bimetal temperature-sensing plate is reset through simple operation, so as to achieve the purpose of repeated use.
Description
Technical field
The utility model relates to sphere of life, is specifically related to a kind of drainage type fire prevention check device for building smoke evacuation or ventilation channel.
Background technique
Social now, the centralized discharge flue of the many employings of residence building in city, the smoke evacuation of each resident family or exhaust duct are connected with centralized discharge flue respectively, for preventing that the oil smoke in centralized discharge flue from pouring in down a chimney, generally in the outlet port of smoke evacuation or exhaust duct, be provided with sideboard, sideboard will export sealing under normal circumstances, and smoke evacuation is opened during exhaust, mostly existing sideboard is to adopt easy structure, the plate washer that utilizes bearing pin to be flexibly connected covers the outlet port at smoke evacuation or exhaust duct, utilize the thrust of indoor flue gas to make baffle plate take bearing pin and reach the object of smoke evacuation exhaust as fulcrum rotation, although said structure can be realized smoke exhaust and ventilation effect, but its baffle openings is identical and contrary with flue gas ascent direction with gravitational direction, therefore can not avoid pouring in down a chimney of flue gas completely.
In addition in centralized discharge flue, after long-time use, can deposit a large amount of greases, under certain conditions can be on fire, if high temperature now enters smoke evacuation or exhaust duct can damage pipeline and indoor equipment.Therefore on more existing baffle plates, be provided with fire resisting construction simultaneously, as disclosed in application number 201210081247.1 " automatically regulating exhaust air rate oil-smoke-exhausting fireproof check valve ", it comprises and is arranged on same flap on mandrel, front spring, flap head part, rear spring and fuse link, flap baffle plate is wherein pushing rear spring and is being fixed on core back-end by fuse link, flap moves on mandrel along mandrel extruding front spring under the promotion of flue gas, thereby formation discharge flue, while catching fire in centralized discharge flue, high temperature can blow fuse link and make rear spring promote flap head part promotion front spring and flap is withstood, make it be greater than the flue gas thrust in gas exhaust duct and close opening, thereby prevented pouring in down a chimney of high-temperature flue gas.Although this structure can prevent that toxic gas from pouring in down a chimney, its structure only can disposablely be used, once can only pull down whole device after fuse link fusing, changes, and practicability is lower; And because it lacks the control structure of controlling baffle openings angle, make smoke discharging effect poor.
Model utility content
For the problem of the refractory protection unreasonable structure in building smoke evacuation or exhaust duct outlet port in solution prior art, the utility model provides a kind of drainage type fire prevention check device that can automatically close according to temperature variation in discharge flue smoke evacuation or exhaust duct.Concrete scheme is as follows: a kind of ventilation flue drainage type fire prevention check device, comprise and be enclosed within ventilation flue outlet port with the fixed base of hollow channel, the baffle plate of sealing hollow channel is installed on described fixed base, it is characterized in that, described baffle plate is flexibly connected with fixed base by bottom, is provided with according to baffle plate pressure and changes the control gear of controlling baffle plate open angle on described fixed base.
Control for convenience the folding of baffle plate: described control gear comprises smoke evacuation torque spring, described smoke evacuation torque spring is fixed on the joint of baffle plate and fixed base, and the two ends extension rod of smoke evacuation torque spring is attached to respectively on baffle plate and fixed base.
For preventing that the high temperature in discharge flue from entering ventilation flue: be provided with on described fixed base and according to temperature variation, baffle plate be fixed on to the temperature controlling device of closed state, described temperature controlling device comprises temperature distortion and the rear restorable bimetal thermal sensitive piece of cooling, be greater than the locking torque spring of smoke evacuation torque spring elastic force with elastic force, one end of described bimetal thermal sensitive piece is fixed on fixed base, the other end is movable end and close baffle plate, on the movable end of bimetal thermal sensitive piece, be provided with stationary platen, described locking torque spring is fixed on fixed base and the extension rod at two ends is attached to respectively on fixed base and stationary platen.
For firm closed guard: be provided with on described fixed base and according to temperature variation, baffle plate be fixed on to the temperature controlling device of closed state, described temperature controlling device comprises temperature distortion and the rear restorable bimetal thermal sensitive piece of cooling, non-return lock hammer and elastic force are greater than the locking torque spring of smoke evacuation torque spring elastic force, one end of described bimetal thermal sensitive piece is fixed on fixed base, the other end is movable end and close baffle plate, on the movable end of bimetal thermal sensitive piece, be provided with stationary platen, described non-return lock hammer one end is movably fixed on fixed base, the other end contacts with stationary platen, described locking torque spring is fixed on fixed base and the extension rod at two ends is attached to respectively on fixed base and non-return lock hammer.
Each parts are installed for convenience: on described fixed base, be fixed with two supporting bases that relatively protrude, on two supporting bases, axostylus axostyle be installed, described baffle plate, smoke evacuation torque spring, locking torque spring and bimetal thermal sensitive piece are arranged on axostylus axostyle.
Discharge for convenience of flue gas: described hollow channel is circular.
For convenience of installing: the resilient clamp sheet that is provided with clamping ventilation duct on described fixed base.
Intake grill of the present utility model and exhaust outlet adopt round tubular design, and discharge directions is consistent with airflow direction in air outlet flue, cooking fume is discharged more unobstructed, without dead angle.While utilizing temperature controlling device to make common flue temperature reach a high temperature the state of emergency, closing baffle plate by force, and after clearing, utilize simple operations can make bimetal thermal sensitive piece reset, reach the object of repeatedly utilization.Fixed base of the present utility model is of a size of common-mode, no matter for conventional type smokejack or pressure swing type smokejack, can install freely.This programme is without dismounting, without changing any accessory, and can reuse, and meets the energy-conserving and environment-protective that country advocates, the green standard recycling.This programme utilizes the setting of many springs, reaches the unlatching closure effect of baffle plate, rational in infrastructure, seals tight anti-smoke blowing gas effect remarkable.
Accompanying drawing explanation
Fig. 1 schematic diagram of the present utility model;
The structural representation that in Fig. 2 the utility model, baffle plate is opened;
Bimetal thermal sensitive piece and the mounting structure schematic diagram that locks torque spring in Fig. 3 the utility model;
Bimetal thermal sensitive piece and another mounting structure schematic diagram of locking torque spring in Fig. 4 the utility model;
Attached number in the figure explanation: 1-fixed base, 2-baffle plate, 3-smoke evacuation torque spring, 4-bimetal thermal sensitive piece, 401-stationary platen, 5-locking torque spring, 501-extension rod, 6-resilient clamp sheet, 7-axostylus axostyle, 8-non-return lock hammer.
Embodiment
As shown in Figure 1, ventilation flue drainage type fire prevention check device of the present utility model, comprise and be enclosed within ventilation flue outlet port with the fixed base 1 of hollow channel, the baffle plate 2 of sealing hollow channel is installed on described fixed base 1, described baffle plate 2 is flexibly connected with fixed base 1 by bottom, is provided with according to baffle plate 2 pressures and changes the control gear of controlling baffle plate 2 open angles on described fixed base 1.Fixed base 1 of the present utility model is arranged on the termination of ventilation flue, when user is by ventilation flue during to other cooking-fume discharging or exhaust, the pressure of flue gas can promote baffle plate 2 and take and be flexibly connected point and from top, outwards open as fulcrum, in this programme, control gear is applied to pressure on baffle plate 2 and is greater than support force in off position of baffle plate homeostasis and is less than flue gas and be applied to the pressure on baffle plate, therefore folding in the angular range that can open in setting according to the large small front apron 2 of the pressure of flue gas, when not having flue gas to discharge, control gear can be fixed on closed state by baffle plate 2, prevent that the flue gas in centralized discharge flue from pouring in down a chimney.In addition, because baffle plate in this programme 2 is to be flexibly connected with fixed base 1 by bottom, the passage that baffle plate 2 is opened is like this positioned at the top of hollow channel, has both facilitated the discharge of flue gas in ventilation flue, can prevent again the interference of centralized discharge flue bottom flue gas simultaneously and pour in down a chimney.
For controlling the folding condition of baffle plate under different pressures, described control gear of the present utility model comprises smoke evacuation torque spring 3, described smoke evacuation torque spring 3 is fixed on the joint of baffle plate 2 and fixed base 1, and the two ends extension rod 501 of smoke evacuation torque spring 3 is attached to respectively on baffle plate 2 and fixed base 1.Because smoke evacuation torque spring 3 bodies are to be fixed on fixed base 1, the extension rod 501 at its two ends can be pressed on respectively on baffle plate 2 and fixed base 1 under mutual elastic force effect like this, when the flue gas pressures in ventilation flue is greater than the pressure of extension rod 501, baffle plate 2 can be along with the big or small folding of flue gas pressures.When in ventilation flue, flue gas reduces gradually, the pressure on extension rod 501 can push back baffle plate 2 original position and close hollow channel gradually.Adopt the structure of smoke evacuation torque spring 3 can make the opening degree of baffle plate 2 and smoke evacuation situation adapt, avoid baffle plate 2 folding angles excessive or too small.
As Fig. 1, 2, shown in 3, for the high temperature after preventing from catching fire in centralized discharge flue enters ventilation flue, on described fixed base 1 of the present utility model, the temperature controlling device that according to temperature variation, baffle plate is fixed on to closed condition is installed, described temperature controlling device comprises temperature distortion and the rear restorable bimetal thermal sensitive piece 4 of cooling, be greater than the locking torque spring 5 of smoke evacuation torque spring 3 elastic force with elastic force, one end of described bimetal thermal sensitive piece 4 is fixed on fixed base 1, the other end is movable end and close baffle plate 2, on the movable end of bimetal thermal sensitive piece 4, be provided with stationary platen 401, described locking torque spring 5 is fixed on fixed base 1 and the extension rod 501 at two ends is attached to respectively on fixed base 1 and stationary platen 401.In this programme, the movable end of bimetal thermal sensitive piece 4 and baffle plate 2 distances are as the criterion with the maximum folding angle of baffle plate 2, can not affect so the normal folding of baffle plate 2, and after bimetal thermal sensitive piece 4 is heated, the track of distortion is parallel with baffle plate 2.After catching fire in centralized discharge flue, bimetal thermal sensitive piece can at high temperature be out of shape and to curving, the extension rod 501 meeting automatic trips that now ride over the locking torque spring 5 on stationary platen 401 fall behind under elastic force effect and are pressed on baffle plate 2, owing to locking the elastic force of torque spring 5, be greater than the smoke evacuation elastic force of torque spring 3 and the pressure of flue gas, no matter therefore which kind of state baffle plate 2 is at, locking torque spring 5 all can be fixed on baffle plate 2 on hollow channel, has prevented that the interior high temperature of centralized discharge flue from destroying the problem of ventilation flue or relevant device.After in centralized discharge flue, temperature reduces, bimetal thermal sensitive piece 4 can restore to the original state automatically, now the extension rod 501 of locking torque spring 5 is hung on stationary platen again.
As shown in Figure 4, for avoiding locking long distortion of extension rod of torque spring, the utility model increases a non-return lock hammer 8 between locking torque spring 5 and bimetal thermal sensitive piece 4, described non-return lock hammer 8 one end are movably fixed on fixed base 1, the other end contacts with the stationary platen 401 of bimetal thermal sensitive piece, and described locking torque spring 5 is fixed on fixed base 1 and the extension rod 501 at two ends is attached to respectively on fixed base 1 and non-return lock hammer 8.The extension rod that locks torque spring during use be take its fixed end by non-return lock hammer and is pressed on stationary platen as fulcrum, after the temperature distortion of bimetal thermal sensitive piece, the movable end of non-return lock hammer departs from stationary platen and is crushed on baffle plate under the effect of locking torque spring, and makes baffle plate close hollow channel.Adopt this structure can adopt locking torque spring that elasticity is larger to improve sealing effect, and there will not be the phenomenon of its extension rod temperature distortion.
All parts are installed for convenience, the utility model is fixed with two supporting bases that relatively protrude on described fixed base 1, on two supporting bases, axostylus axostyle 7 is installed, described baffle plate 2, smoke evacuation torque spring 3, locking torque spring 5 and bimetal thermal sensitive piece 4 are arranged on axostylus axostyle 7.Concrete axostylus axostyle 7 is that the through hole by being arranged on supporting base is arranged on two supporting bases, at axostylus axostyle 7, be positioned at the parts such as the hold-doun nut that diameter is set on the termination in supporting base outside and is greater than through hole, Fixed latches, when facilitating axostylus axostyle to install, also avoid axostylus axostyle to come off.In this programme, fixed base 1 and baffle plate 2 all adopt metal material, in the bottom of baffle plate 2, hollow sleeve pipe is set, then be through on axostylus axostyle 7 and fixing with fixed base 1, the torque spring 3 of discharging fume equally, non-return lock hammer 8 and locking torque spring 5 are enclosed within on axostylus axostyle 7 by middle passage.
For improving the discharge efficiency of flue gas, described hollow channel of the present utility model is round structure.Wherein the outer side contacting with hollow channel of baffle plate 2 tilts to hollow channel, forms the state fastening, to improve sealing effect.For convenience of the installation and removal of fixed base 1, the two ends of hollow channel described in the utility model are provided with the resilient clamp sheet 6 of clamping gas exhaust duct.The quantity of resilient clamp sheet is between 2～6, for the mouth of pipe of ventilation flue being clamped in to the hollow channel of fixed base.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model with preferred embodiment openly as above, yet not in order to limit the utility model, any technician who is familiar with this patent is not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of the utility model scheme.
Claims (7)
1. ventilation flue drainage type fire prevention check device, comprise and be enclosed within ventilation flue outlet port with the fixed base (1) of hollow channel, the baffle plate (2) of sealing hollow channel is installed on described fixed base (1), it is characterized in that, described baffle plate (2) is flexibly connected with fixed base (1) by bottom, is provided with according to baffle plate (2) pressure and changes the control gear of controlling baffle plate open angle on described fixed base (1).
2. a kind of ventilation flue drainage type fire prevention check device as claimed in claim 1, it is characterized in that, described control gear comprises smoke evacuation torque spring (3), described smoke evacuation torque spring is fixed on the joint of baffle plate (2) and fixed base (1), and the two ends extension rod (501) of smoke evacuation torque spring (3) is attached to respectively on baffle plate (2) and fixed base (1).
3. a kind of ventilation flue drainage type fire prevention check device as claimed in claim 1, it is characterized in that, described fixed base is provided with the temperature controlling device that according to temperature variation, baffle plate is fixed on to closed state on (1), described temperature controlling device comprises temperature distortion and the rear restorable bimetal thermal sensitive piece (4) of cooling, be greater than the locking torque spring (5) of smoke evacuation torque spring elastic force with elastic force, one end of described bimetal thermal sensitive piece (4) is fixed on fixed base (1), the other end is movable end and close baffle plate (2), on the movable end of bimetal thermal sensitive piece (4), be provided with stationary platen (401), described locking torque spring (5) is fixed on fixed base (1) extension rod (501) upper and two ends and is attached to respectively on fixed base (1) and stationary platen (401).
4. a kind of ventilation flue drainage type fire prevention check device as claimed in claim 1, it is characterized in that, described fixed base is provided with the temperature controlling device that according to temperature variation, baffle plate is fixed on to closed state on (1), described temperature controlling device comprises temperature distortion and the rear restorable bimetal thermal sensitive piece (4) of cooling, non-return lock hammer (8) and elastic force are greater than the locking torque spring (5) of smoke evacuation torque spring elastic force, one end of described bimetal thermal sensitive piece (4) is fixed on fixed base (1), the other end is movable end and close baffle plate (2), on the movable end of bimetal thermal sensitive piece (4), be provided with stationary platen (401), described non-return lock hammer one end is movably fixed on fixed base, the other end contacts with stationary platen, described locking torque spring (5) is fixed on fixed base (1) extension rod (501) upper and two ends and is attached to respectively on fixed base (1) and non-return lock hammer (8).
5. the fire prevention of a kind of ventilation flue drainage type as described in claim 3 or 4 check device, it is characterized in that, on described fixed base (1), be fixed with two supporting bases that relatively protrude, axostylus axostyle (7) is installed on two supporting bases, and described baffle plate (2), smoke evacuation torque spring (3), locking torque spring (5) and bimetal thermal sensitive piece (4) are arranged on axostylus axostyle (7).
6. a kind of ventilation flue drainage type fire prevention check device as claimed in claim 1, is characterized in that, described hollow channel is circular.
7. a kind of ventilation flue drainage type fire prevention check device as claimed in claim 1, is characterized in that, is provided with the resilient clamp sheet (6) of clamping ventilation duct on described fixed base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713603.7U CN203743517U (en) | 2013-11-14 | 2013-11-14 | Flow-guide fire-prevention non-return device for air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713603.7U CN203743517U (en) | 2013-11-14 | 2013-11-14 | Flow-guide fire-prevention non-return device for air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743517U true CN203743517U (en) | 2014-07-30 |
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ID=51343318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320713603.7U Expired - Fee Related CN203743517U (en) | 2013-11-14 | 2013-11-14 | Flow-guide fire-prevention non-return device for air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743517U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523718A (en) * | 2016-11-15 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Exhaust adjusting valve structure |
| CN111483527A (en) * | 2019-01-28 | 2020-08-04 | 上海汽车集团股份有限公司 | Side gas curtain and car |
-
2013
- 2013-11-14 CN CN201320713603.7U patent/CN203743517U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523718A (en) * | 2016-11-15 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Exhaust adjusting valve structure |
| CN106523718B (en) * | 2016-11-15 | 2019-02-12 | 安徽江淮汽车集团股份有限公司 | A kind of exhaust regulating valve structure |
| CN111483527A (en) * | 2019-01-28 | 2020-08-04 | 上海汽车集团股份有限公司 | Side gas curtain and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: BEIJING DULONG RUIJIAN TECHNOLOGY DEVELOPMENT CO., LTD. Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20181114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |