CN202768955U - Fire prevention check valve for flue - Google Patents
Fire prevention check valve for flue Download PDFInfo
- Publication number
- CN202768955U CN202768955U CN 201220361827 CN201220361827U CN202768955U CN 202768955 U CN202768955 U CN 202768955U CN 201220361827 CN201220361827 CN 201220361827 CN 201220361827 U CN201220361827 U CN 201220361827U CN 202768955 U CN202768955 U CN 202768955U
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- CN
- China
- Prior art keywords
- check valve
- flue
- blend stop
- air door
- housing
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a part used to be matched with a flue, in particular to a connector connected with the flue. A fire prevention check valve for the flue comprises a shell body, wherein an oil smoke passageway arranged at the middle position of the shell body is provided with an air door, two sides of the air door are connected with the oil smoke passageway through a rotating shaft, an elastic reset device is arranged at the middle position of the rotating shaft, the back face of the shell body is provided with an air door fixing device, and a smoke guiding device can also be arranged. The fire prevention check valve for the flue is simple in structure and low in cost, can prevent the smoke from flowing backward, has a smoke guiding function, and can cut off a fire source, thereby having a good fire prevention function.
Description
Technical field
The utility model relates to a kind of accessory that is used in conjunction with flue, relates in particular to a kind of joint that is connected with flue.
Background technique
Existing flue check valve, in running order lower at range hood, the air door of check valve is in when opening under the airflow function that range hood is carried, because the project organization problem of air door, the air-flow trend that flows out from the air door of safety check all is to blowing down, perhaps to move towards flue vertical with air-flow, thus, if the range hood of each floor is worked simultaneously on the same flue, because downward or horizontal air-flow can affect following flue gas upper reaches, can cause thus the oil smoke of lower floor in the flue to be difficult to upwards discharge.
Notification number is that the patent of CN 201041247Y discloses a kind of safety check, and air door is arranged on the lower end of intracavity through hole, and when kitchen ventilator was worked, air door was backed down by air-flow, and air door leans on gravity reduction when airless, but bad only according to the reset effect of Action of Gravity Field.Notification number is that the patent of CN202149256U also discloses a kind of anti-fire check valve, and resetting means adopts extension spring, also can reach preferably air door reset effect, but the cost of extension spring is higher comparatively speaking, and the structure of this kind check valve is comparatively complicated.
The model utility content
According to above deficiency of the prior art, technical problem to be solved in the utility model is: a kind of fireproof check valve for flue simple in structure, with low cost is provided, can prevent that flue gas from pouring in down a chimney, having the flue gas guide function, and can cut off burning things which may cause a fire disaster, have good fire-proof function.
A kind of fireproof check valve for flue described in the utility model, comprise housing, the housing neutral position is provided with the oil smoke passage, the oil smoke passage is provided with air door, the both sides of air door are connected on the oil smoke passage by rotating shaft, the rotating shaft neutral position is provided with elasticity reset device, and back side of shell also is provided with the air door fixing device.
Described elasticity reset device is spring or shell fragment.
Described air door fixing device comprises stationary axle, check blend stop and support plate, stationary axle and support plate are separately fixed on the housing, and fixed end and the stationary axle of check blend stop are hinged, and and housing between be provided with Returnning spring, Returnning spring one end is fixed, and the other end is connected with the check blend stop; The free end of check blend stop is connected with support plate by fuse link.
Described check blend stop is leptosomatic strip shape body, and the position of check blend stop is lower than the position of rotating shaft, and when normal operation, air door can unrestrictedly be the unlatching shape like this.
Described housing is provided with locating slot, and the free end of check blend stop can fasten with locating slot.
In use, air door is opened under the airflow function that range hood is carried, and when air-flow stopped, under the effect of elasticity reset device, air door automatically reset to be and closes shape.Fuse link is made by temperature sensing material, it is solid structure under the normal temperature, when temperature reaches the melt temperature of fuse link, fuse link melts, because the check blend stop is connected by fuse link with support plate, when breaking out of fire, the temperature of pyrotechnics reaches the fusing-off temperature of fuse link, fuse link fusing, check blend stop and support plate disconnect.Because check blend stop fixed end and stationary axle are hinged, this moment, the check blend stop upwards resetted owing to the effect of Returnning spring, and its free end engages with locating slot on the housing, thereby air door can be tightened, and has stoped the intensity of a fire further to spread.
The outer periphery of described air door is provided with adjacent groove I and boss II, and described oil smoke passage inner periphery correspondence is provided with the boss I, and boss I and groove I fasten.This kind setting can make the obturation effect of air door better.
The position of the utility model rotating shaft operated by rotary motion under the intracavity through hole center deviation, rotating shaft is arranged on the left and right sides of air door, forms eccentric structure, also can pin-joint piece be set at the downside of air door, and pin-joint piece and intracavity through hole are hinged.
The utility model also is provided with the flue gas guiding device, and the flue gas guiding device is installed in the housing back, and housing back inner periphery is provided with Stamping Steel Ribbon, and the bottom of flue gas guiding device is provided with oil leaking hole.Under the guiding function of guiding device, the air-flow that flows out from air door moves upward, and the oil that deposit in the oil smoke can be collected in bottom the guiding device, and flows out by oil leaking hole.
The utility model is simple in structure, with low cost, can prevent that flue gas from pouring in down a chimney, having the flue gas guide function, and can cut off burning things which may cause a fire disaster, has good fire-proof function.
Description of drawings
Fig. 1 is back structures schematic diagram of the present utility model;
Fig. 2 is side cutaway view of the present utility model;
Fig. 3 is the A section enlarged view of Fig. 2;
Fig. 4 is embodiment 2 side structure schematic diagram.
Among the figure: 1, housing; 2, air door; 3, rotating shaft; 4, spring; 5, stationary axle; 6, check blend stop; 7, support plate; 8, locating slot; 9, fixed hole; 10, boss II; 11, groove I; 12, boss I; 13, flue gas guiding device; 14, oil leaking hole.
Embodiment
Be better explanation the utility model, below in conjunction with drawings and Examples the utility model be further described:
As Figure 1-3, fireproof check valve for flue described in the utility model, comprise housing 1, housing 1 neutral position is provided with the oil smoke passage, the oil smoke passage is provided with air door 2, and the both sides of air door 2 are connected on the oil smoke passage by rotating shaft 3, and rotating shaft 3 neutral positions are provided with elasticity reset device, housing 1 back side also is provided with the air door fixing device, and housing 1 back inner periphery is provided with Stamping Steel Ribbon.
Wherein, elasticity reset device is spring 4, and the air door fixing device comprises stationary axle 5, check blend stop 6 and support plate 7, and stationary axle 5 and support plate 7 are separately fixed on the housing 1, and the fixed end of check blend stop 6 and stationary axle 5 are hinged; Stationary axle 5 is provided with Returnning spring, and Returnning spring is between check blend stop 6 fixed ends and housing 1, and the Returnning spring lower end fixes, and the upper end is connected with check blend stop 6; The free end of check blend stop 6 is connected with support plate 7 by fuse link.Check blend stop 6 is leptosomatic strip shape body, and its position is lower than the position of rotating shaft 3.Housing 1 is provided with locating slot 8, and the free end of check blend stop 6 can fasten with locating slot 8.
The outer periphery of air door is provided with adjacent groove I 11 and boss II 10, and described oil smoke passage inner periphery correspondence is provided with boss I 12, and boss I 12 and groove I 11 fasten.
In use, air door 1 is opened under the airflow function that range hood is carried, and when air-flow stopped, under the effect of elasticity reset device, air door 1 automatically reset to be and closes shape.Fuse link is made by temperature sensing material, it is solid structure under the normal temperature, when temperature reaches the melt temperature of fuse link, fuse link melts, because check blend stop 6 and support plate 7 are connected by fuse link, when breaking out of fire, the temperature of pyrotechnics reaches the fusing-off temperature of fuse link, fuse link fusing, check blend stop 6 disconnects with support plate 7.Because check blend stop 6 fixed ends and stationary axle 5 are hinged, this moment, check blend stop 6 upwards resetted because the effect of Returnning spring, and its free end engages with locating slot 8 on the housing 1, thereby air door 1 can be tightened, and stop the intensity of a fire further to spread.
Shown in Fig. 1-4, the utility model is provided with flue gas guiding device 13 on embodiment 1 basis, and flue gas guiding device 13 is installed in housing 1 back, and its bottom is provided with oil leaking hole 14.
Using method is with embodiment 1, and under the guiding function of guiding device 13, the air-flow that flows out from air door 1 moves upward, and the oil that deposit in the oil smoke can be collected in guiding device 13 bottoms, and by oil leaking hole 14 outflows.
Claims (10)
1. fireproof check valve for flue, comprise housing (1), housing (1) neutral position is provided with the oil smoke passage, the oil smoke passage is provided with air door (2), the both sides of air door (2) are connected on the oil smoke passage by rotating shaft (3), it is characterized in that, described rotating shaft (3) neutral position is provided with elasticity reset device, and described housing (1) back side also is provided with the air door fixing device.
2. fireproof check valve for flue according to claim 1 is characterized in that, described elasticity reset device is spring (4) or shell fragment.
3. fireproof check valve for flue according to claim 1, it is characterized in that, described air door fixing device comprises stationary axle (5), check blend stop (6) and support plate (7), stationary axle (5) and support plate (7) are separately fixed on the housing (1), and the fixed end of check blend stop (6) and stationary axle (5) are hinged; Stationary axle (5) is provided with Returnning spring, and Returnning spring is positioned between check blend stop (6) fixed end and the housing (1), and the Returnning spring lower end fixes, and the upper end is connected with check blend stop (6); The free end of check blend stop (6) is connected with support plate (7) by fuse link.
4. fireproof check valve for flue according to claim 3 is characterized in that, the position of described check blend stop (6) is lower than the position of rotating shaft (3).
5. fireproof check valve for flue according to claim 3 is characterized in that, described check blend stop (6) is leptosomatic strip shape body.
6. fireproof check valve for flue according to claim 1 is characterized in that, described housing (1) is provided with locating slot (8), and the free end of check blend stop (6) can fasten with locating slot (8).
7. fireproof check valve for flue according to claim 1, it is characterized in that, the outer periphery of described air door is provided with adjacent groove I (11) and boss II (10), and described oil smoke passage inner periphery correspondence is provided with boss I (12), and boss I (12) and groove I (11) fasten.
8. fireproof check valve for flue according to claim 1 is characterized in that, also is provided with flue gas guiding device (13), and flue gas guiding device (13) is installed in housing (1) back.
9. fireproof check valve for flue according to claim 8 is characterized in that, the bottom of described flue gas guiding device (13) is provided with oil leaking hole (14).
10. according to claim 1 or 8 described fireproof check valve for flues, it is characterized in that, described housing (1) back inner periphery is provided with Stamping Steel Ribbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361827 CN202768955U (en) | 2012-07-25 | 2012-07-25 | Fire prevention check valve for flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361827 CN202768955U (en) | 2012-07-25 | 2012-07-25 | Fire prevention check valve for flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768955U true CN202768955U (en) | 2013-03-06 |
Family
ID=47775530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361827 Expired - Fee Related CN202768955U (en) | 2012-07-25 | 2012-07-25 | Fire prevention check valve for flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525116A (en) * | 2017-10-11 | 2017-12-29 | 杭州老板电器股份有限公司 | Fire-preventing check valve and central cooking fume control equipment |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
-
2012
- 2012-07-25 CN CN 201220361827 patent/CN202768955U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525116A (en) * | 2017-10-11 | 2017-12-29 | 杭州老板电器股份有限公司 | Fire-preventing check valve and central cooking fume control equipment |
| CN107525116B (en) * | 2017-10-11 | 2024-03-22 | 杭州老板电器股份有限公司 | Fireproof check valve and central oil smoke purifying equipment |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
| CN109681680B (en) * | 2017-10-18 | 2024-01-16 | 宁波方太厨具有限公司 | Fireproof check valve for flue of single-chip valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20200725 |