CN213017945U - Fireproof flue non-return device - Google Patents
Fireproof flue non-return device Download PDFInfo
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- CN213017945U CN213017945U CN202021867899.4U CN202021867899U CN213017945U CN 213017945 U CN213017945 U CN 213017945U CN 202021867899 U CN202021867899 U CN 202021867899U CN 213017945 U CN213017945 U CN 213017945U
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- Prior art keywords
- fire
- guide cylinder
- springs
- wall
- spring
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- 230000000903 blocking effect Effects 0.000 claims abstract description 44
- 230000002265 prevention Effects 0.000 claims abstract description 19
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003546 flue gas Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000009970 fire resistant effect Effects 0.000 claims 8
- 239000000779 smoke Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a fire-proof type flue non-return device, including draft tube, non-return valve gap and a plurality of fire prevention unit, the non-return valve gap is whole to be sealed the exhaust end of draft tube, and the non-return valve gap can open the exhaust end of draft tube when the air current strikes, fire prevention unit sets up in the draft tube, and fire prevention unit includes dead lever, two fuse-links, two barrier plates and two springs, the dead lever is fixed in on the inner wall of draft tube, barrier plate adopts fire-proof material to make, and the one end of two barrier plates articulates on the inner wall of draft tube, and the other end of two barrier plates can contact each other; one end of the fuse link is connected with the barrier plate, and the other end of the fuse link is connected with the fixed rod; one end of the spring is hinged to the blocking plate, the other end of the spring is hinged to the inner wall of the guide cylinder, and a gap is formed between the two blocking plates in an initial state; the fire prevention and the flue gas of this device get into the performance and obtain very big improvement.
Description
Technical Field
The utility model relates to a flue non return device technical field, concretely relates to fire prevention type flue non return device.
Background
In the life, high-rise building is more and more, and high-rise building adopts public flue, can irritate toxic gas in the flue after the high-rise building catches fire, and under the chimney effect, toxic gas can get into other users through the flue, and installation flue non return device can prevent the oil smoke refluence, can play the connection effect of pipeline again, therefore it is very necessary to install flue non return device.
The patent document of publication No. CN209622139U provides a flue non-return device, which can avoid the backflow of flue gas, and through the cooperation of a non-return valve cover and a flue gas non-return assembly, the non-return valve cover can be locked at high temperature to prevent the flue gas from entering. The smoke and fire are prevented through the check valve cover, and once the check valve cover is damaged in a high-temperature open fire environment, the smoke and fire can spread into residents to cause disastrous results.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a fire prevention type flue non return device to improve the fire prevention and the prevention flue gas entering performance of device.
A fireproof flue non-return device comprises a guide cylinder, a non-return valve cover and a plurality of fireproof units, wherein the non-return valve cover completely seals an exhaust end of the guide cylinder, the non-return valve cover can open the exhaust end of the guide cylinder when air flow impacts, the fireproof units are arranged in the guide cylinder and comprise a fixed rod, two fuse pieces, two blocking plates and two springs, the fixed rod is fixed on the inner wall of the guide cylinder, the blocking plates are made of fireproof materials, one ends of the two blocking plates are hinged to the inner wall of the guide cylinder, the other ends of the two blocking plates can be in contact with each other, and when the end faces of the two blocking plates are in contact with each other, the inner cavity of the guide cylinder can be completely sealed; one end of each fuse link is connected with the barrier plate, the other end of each fuse link is connected with the fixed rod, and the two fuse links are respectively connected with the two barrier plates; one end of each spring is hinged to the corresponding blocking plate, the other end of each spring is hinged to the inner wall of the guide cylinder, the two springs are respectively hinged to the two blocking plates, and a gap is formed between the two blocking plates in an initial state.
In order to solve the problems, the inventor designs the technical scheme, the technical scheme is that a non-return valve cover and a plurality of fireproof units which can be pushed open by airflow are arranged, when the fireproof unit is in an initial state, one end of a fuse link in each fireproof unit is connected with a blocking plate, the other end of the fuse link is connected with a fixed rod, the two fuse links are respectively connected with two blocking plates, a spring is in a compressed state, the fuse link supports against the blocking plates, the positions of the blocking plates are limited by the fuse link and the spring, a gap is formed between the two blocking plates in each fireproof unit, the non-return valve cover seals the exhaust end of a guide cylinder, under the conventional condition, after smoke exhausted from a kitchen and a toilet enters the guide cylinder, the smoke reaches the exhaust end after passing through the gap between the blocking plates, the non-return valve cover is pushed open by the airflow impact force of the smoke and then is exhausted out of the guide cylinder, after a high-rise fire happens, the, when the temperature reaches a certain value, for example 150 deg.C, the fuse link is fused, the blocking plate has no resisting force of fuse link, the device moves by utilizing the elastic restoring force of the spring, when the spring is set to be in a conventional state, the two blocking plates in the fireproof unit are contacted with each other, at the moment, the two blocking plates in the fireproof unit seal the inner cavity of the guide cylinder, the device can discharge smoke in the conventional state, and simultaneously can prevent gas in a public flue from entering when a fire disaster happens, when a fire occurs, the non-return valve cover is used for primary blocking, the fireproof unit is used for secondary blocking, even the non return valve gap suffers damage, the fire prevention unit still can block flue gas and flame, sets up simultaneously that the barrier plate adopts fire resistive material to make, and a plurality of fire prevention unit layer distributions form multistage protection in the draft tube, the fire prevention and the smoke prevention entering performance of very big improvement device.
Preferably, the guide cylinder further comprises an annular plate and a plurality of first springs, the outer circumferential wall of the annular plate is in contact with the inner circumferential wall of the guide cylinder, one end of each first spring is connected with the annular plate, the other end of each first spring is connected with the check valve cover, and the first springs are distributed in the circumferential direction of the axis of the annular plate. In the technical scheme, the first spring is always in an extension state, the exhaust end of the guide cylinder is closed by the check valve cover by using the elastic restoring force of the first spring, and when smoke of kitchens and bathrooms enters the guide cylinder, airflow impacts to jack the check valve cover, so that the exhaust end of the guide cylinder is opened.
Preferably, a plurality of the first springs are evenly distributed around the circumference of the axis of the annular plate. Set up many among this technical scheme first spring around the circumference evenly distributed of annular plate axis, can make non return valve lid atress even.
Preferably, the outer wall of the guide shell is connected with a mounting plate. The outer wall of the guide cylinder in the technical scheme is connected with the mounting plate, so that the device can be conveniently mounted on a flue opening of a kitchen.
Preferably, the mounting plate is annular. The mounting panel is the annular among this technical scheme, and during the installation, the draft tube gets into in the flue mouth, and the mounting panel can be with the whole covers in the clearance between flue mouth and the draft tube in kitchen, prevents that public flue's flue gas from getting into from the clearance between flue mouth and the draft tube, mounting panel and the coaxial setting of draft tube among this technical scheme.
Preferably, a plurality of the fire protection units are distributed at equal intervals.
Preferably, the check valve cover is made of fireproof materials. The check valve cover adopts the fireproof material to make among this technical scheme, and the check valve cover not only can prevent that the flue gas from getting into, can also prevent fires.
Preferably, the spring is a high temperature resistant spring.
The beneficial effects of the utility model are embodied in: in the technical scheme, a check valve cover and a plurality of fireproof units which can be pushed open by airflow are arranged, when the device is in an initial state, one end of a fuse link in each fireproof unit is connected with a blocking plate, the other end of the fuse link is connected with a fixed rod, the two fuse links are respectively connected with the two blocking plates, a spring is in a compressed state, the fuse link supports the blocking plates, the temperature in a common flue rises rapidly after a high-rise building catches fire, when the temperature reaches a certain value, such as 150 ℃, the fuse link fuses, the blocking plates do not have the supporting force of the fuse link, the blocking plates move by utilizing the elastic restoring force of the spring, when the two blocking plates are contacted with each other, the inner cavity of the guide cylinder is sealed by the two blocking plates in each fireproof unit, the device can exhaust smoke under a conventional state, meanwhile, the common flue can be prevented from entering when encountering a fire, and when encountering the fire, the check valve cover is used for primarily blocking, utilize the fire prevention unit to carry out the secondary and block, even the non return valve gap suffers the damage, the fire prevention unit still can block flue gas and flame, sets up the barrier plate simultaneously and adopts fire resistive material to make, and a plurality of fire prevention unit level distributions form multistage protection in the draft tube, the fire prevention and the smoke prevention of very big improvement device get into the performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention when two blocking plates are separated;
fig. 2 is a schematic structural view of the middle fire-proof unit of the present invention when two blocking plates contact each other.
In the attached figure, 1-a guide cylinder, 2-a check valve cover, 3-a fixed rod, 4-a fuse link, 5-a blocking plate, 6-a spring, 7-an annular plate, 8-a first spring and 9-a mounting plate.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Examples
As shown in fig. 1 and 2, the flow guide cylinder comprises a flow guide cylinder 1, a non-return valve cover 2 and a plurality of fireproof units, the non-return valve cover 2 completely seals an exhaust end of the flow guide cylinder 1, the non-return valve cover 2 can open the exhaust end of the flow guide cylinder 1 when an airflow impacts, the fireproof units are arranged in the flow guide cylinder 1, each fireproof unit comprises a fixed rod 3, two fuse pieces 4, two blocking plates 5 and two springs 6, the fixed rod 3 is fixed on the inner wall of the flow guide cylinder 1, the blocking plates 5 are made of fireproof materials, one ends of the two blocking plates 5 are hinged to the inner wall of the flow guide cylinder 1, the other ends of the two blocking plates 5 can be in contact with each other, and the end faces of the two blocking plates 5 can completely seal the inner cavity of the flow guide cylinder 1; one end of each fuse link 4 is connected with the barrier plate 5, the other end of each fuse link 4 is connected with the fixed rod 3, and the two fuse links 4 are respectively connected with the two barrier plates 5; one end of each spring 6 is hinged to each blocking plate 5, the other end of each spring 6 is hinged to the inner wall of the guide cylinder 1, the two springs 6 are respectively hinged to the two blocking plates 5, and a gap is formed between the two blocking plates 5 in an initial state.
The guide cylinder is characterized by further comprising an annular plate 7 and a plurality of first springs 8, wherein the outer circumferential wall of the annular plate 7 is in contact with the inner circumferential wall of the guide cylinder 1, one ends of the first springs 8 are connected with the annular plate 7, the other ends of the first springs 8 are connected with the check valve cover 2, and the plurality of first springs 8 are distributed in the circumferential direction of the axis of the annular plate 7.
In order to force the check valve cover 2 evenly, in the embodiment, a plurality of first springs 8 are distributed evenly around the circumference of the axis of the annular plate 7.
In order to facilitate the installation of the device on the flue opening of the kitchen and toilet, the outer wall of the guide cylinder 1 is connected with an installation plate 9 in the embodiment. The mounting plate 9 is in the form of a ring in this embodiment. The mounting plate 9 is arranged coaxially with the guide shell 1 in this embodiment.
In this embodiment, a plurality of the fire prevention units are equidistantly distributed. In this embodiment, the check valve cover 2 is made of a fireproof material. The spring 6 in this embodiment is a high temperature resistant spring.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. A fireproof flue check device is characterized by comprising a guide cylinder (1), a check valve cover (2) and a plurality of fireproof units, wherein the exhaust end of the guide cylinder (1) is completely sealed by the check valve cover (2), and the check valve cover (2) can open the exhaust end of the guide cylinder (1) when the airflow impacts, the fire prevention unit is arranged in the guide cylinder (1) and comprises a fixed rod (3), two fuse links (4), two barrier plates (5) and two springs (6), the fixing rod (3) is fixed on the inner wall of the guide shell (1), the barrier plates (5) are made of fireproof materials, one end of each barrier plate (5) is hinged on the inner wall of the guide shell (1), the other ends of the barrier plates (5) can be contacted with each other, when the end surfaces of the two blocking plates (5) are contacted with each other, the inner cavity of the guide shell (1) can be completely sealed; one end of each fuse link (4) is connected with the barrier plate (5), the other end of each fuse link (4) is connected with the fixing rod (3), and the two fuse links (4) are respectively connected with the two barrier plates (5); one end of each spring (6) is hinged to each blocking plate (5), the other end of each spring (6) is hinged to the inner wall of the guide cylinder (1), the two springs (6) are respectively hinged to the two blocking plates (5), and a gap is formed between the two blocking plates (5) in an initial state.
2. The fire-proof type flue check device according to claim 1, further comprising an annular plate (7) and a plurality of first springs (8), wherein the outer circumferential wall of the annular plate (7) is in contact with the inner circumferential wall of the guide cylinder (1), one ends of the first springs (8) are connected with the annular plate (7), the other ends of the first springs (8) are connected with the check valve cover (2), and the plurality of first springs (8) are distributed around the circumference of the axis of the annular plate (7).
3. A fire-resistant flue gas check device according to claim 2, characterized in that the first springs (8) are evenly distributed around the circumference of the axis of the annular plate (7).
4. A fire-resistant flue gas check device according to claim 1, characterized in that a mounting plate (9) is attached to the outer wall of the guide shell (1).
5. A fire-resistant flue gas check device according to claim 4, characterised in that the mounting plate (9) is annular.
6. A fire-resistant flue gas check device as in claim 1, wherein said fire-resistant units are equally spaced.
7. A fire-resistant flue gas check device according to claim 1, characterized in that the check valve cover (2) is made of a fire-resistant material.
8. A fire-resistant flue gas check device according to claim 1, characterized in that the spring (6) is a high temperature resistant spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867899.4U CN213017945U (en) | 2020-08-28 | 2020-08-28 | Fireproof flue non-return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867899.4U CN213017945U (en) | 2020-08-28 | 2020-08-28 | Fireproof flue non-return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017945U true CN213017945U (en) | 2021-04-20 |
Family
ID=75474092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021867899.4U Expired - Fee Related CN213017945U (en) | 2020-08-28 | 2020-08-28 | Fireproof flue non-return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115978261A (en) * | 2023-02-13 | 2023-04-18 | 中国建筑标准设计研究院有限公司 | Kitchen flue closed fire-proof valve |
-
2020
- 2020-08-28 CN CN202021867899.4U patent/CN213017945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115978261A (en) * | 2023-02-13 | 2023-04-18 | 中国建筑标准设计研究院有限公司 | Kitchen flue closed fire-proof valve |
| CN115978261B (en) * | 2023-02-13 | 2023-08-04 | 中国建筑标准设计研究院有限公司 | Kitchen flue airtight fire damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |