CN216479099U - Unobstructed fire prevention check valve admits air - Google Patents
Unobstructed fire prevention check valve admits air Download PDFInfo
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- CN216479099U CN216479099U CN202122555030.7U CN202122555030U CN216479099U CN 216479099 U CN216479099 U CN 216479099U CN 202122555030 U CN202122555030 U CN 202122555030U CN 216479099 U CN216479099 U CN 216479099U
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Abstract
The utility model provides a smooth-air-inlet fireproof check valve which comprises a valve casing, a valve seat, a valve clack, a flange and an air inlet pipe, wherein the valve casing is used for providing an exhaust passage, the flange is positioned on the air outlet side of the exhaust passage, the valve casing is installed on a residential exhaust passage through the flange and positioned outside the residential exhaust passage, the valve seat is positioned on the air inlet side of the exhaust passage, the air inlet pipe is arranged on the air inlet side of the valve seat and communicated with the exhaust passage, the valve clack is arranged on the valve casing and is matched with the valve seat to open or close the exhaust passage, and the valve seat is inclined upwards relative to the flange along the exhaust direction of the exhaust passage. The fireproof check valve has the advantages of smooth air inlet and small wind resistance.
Description
Technical Field
The utility model belongs to the technical field of fireproof check valves, and particularly relates to a fireproof check valve with smooth air inlet.
Background
The fire-proof check valve is one of the important components of the house exhaust duct system, and has the main function of guiding the smoke in the house to flow upwards into the house exhaust duct and preventing the smoke from flowing backwards, and meanwhile, the fire-proof execution mechanism is arranged to ensure the fire-proof safety.
Fire check valve among the prior art installs on house exhaust passage, its water conservancy diversion part is mainly located the inside of house exhaust passage, need occupy certain space, for example, chinese patent application 2016106548305 discloses a fire check valve, which comprises a body, valve block and coupling mechanism, be equipped with the gas vent on the body, the valve block lid is established on the gas vent, the body passes through coupling mechanism with the valve block and is connected, fire check valve still includes the mounting and is used for slowing down the flexible piece that the valve block strikeed body effort, mounting one end is connected with the valve block, the mounting other end extrudes the flexible piece and makes this flexible piece centre gripping between mounting and valve block.
For another example, chinese patent application 20181855827 discloses a fire-resistant check valve, which includes a valve body having an exhaust port and a valve plate for covering the exhaust port, wherein the valve plate has an annular joining region at its inner peripheral portion for sealingly joining the exhaust port, and a guide plate extending inwardly of the valve body is connected to the inner side of the valve plate along at least a portion of the inner edge of the annular joining region.
However, the fireproof check valve in the prior art is installed inside the residential exhaust duct, and the residential exhaust duct smoke emission is blocked due to the fact that the fireproof check valve occupies the internal space of the residential exhaust duct, so that the problems of large wind resistance, poor smoke emission effect and the like of a system are caused.
Therefore, improvements are needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a smooth-air-inlet fireproof check valve to overcome the defects in the prior art.
The technical scheme of the utility model is as follows:
the utility model provides a smooth fire prevention check valve admits air, including the valve casing, the disk seat, the valve clack, flange and intake pipe, the valve casing is used for providing exhaust passage, the flange is located exhaust passage's one side of giving vent to anger, the valve casing passes through the flange mounting on the house exhaust passage and is located the outside of house exhaust passage, the disk seat is located exhaust passage's one side of admitting air, the intake pipe sets up in the side of admitting air of disk seat and is linked together with exhaust passage, the valve clack sets up on the valve casing and opens or close this exhaust passage with the disk seat cooperation, wherein the disk seat is upwards for the flange along exhaust passage's exhaust direction slope.
In the technical scheme of the utility model, the valve casing is arranged outside the residential exhaust passage, so that the internal space of the residential exhaust passage is not completely occupied, and the exhaust process of smoke of the residential exhaust passage is not obstructed, thereby reducing the wind resistance of the whole system; meanwhile, the valve seat is arranged to be inclined upwards relative to the flange along the exhaust direction of the exhaust channel, and the air inlet pipe is matched, so that the air flowing in through the valve seat has an inclined upwards flowing direction, the flue gas to be discharged can be guided to rapidly enter the residential exhaust channel and has a component (namely upwards flowing) which is the same as the gas flowing direction in the residential exhaust channel, and the exhaust process is smooth and efficient.
Specifically, the valve clack closes on the disk seat with the same tilt state lid under the closure state, and the back is closed to the valve clack, can utilize the gravity of valve clack self, makes valve clack and disk seat laminating be in the same place, is favorable to improving the airtight effect of valve clack, prevents to open because of exhaust passage internal pressure is undulant, leads to the valve clack mistake to open.
As a further embodiment of the utility model, the valve flap has at least one circular contour for forming a sealing fit, and the valve seat has at least one circular seat for the valve flap, on which the circular contour covers.
As another specific embodiment of the utility model, the inner edge of the circular ring seat extends towards the outside vertically to form the air inlet pipe, so that all air in the air inlet pipe directly enters the exhaust passage.
The gas that gets into in the valve casing through the intake pipe in this scheme does not receive any stop, can be direct whole get into in the valve casing and finally discharged.
As a further embodiment of the utility model, the valve housing has a front end plate, on which a circular seat is arranged and recessed towards the inlet pipe to form a groove-shaped seat, on which the circular contour of the valve flap overlaps.
In a further embodiment of the utility model, the valve housing has a front end plate, on which a ring seat is arranged which projects in the exhaust direction of the exhaust channel to form a convex seat, on which the circular contour of the valve flap overlaps.
As a further embodiment of the utility model, the angle between the plane of the valve seat and the plane of the flange does not exceed 60 °.
As another specific embodiment of the utility model, the included angle between the plane of the valve seat and the plane of the flange is 10-30 degrees.
As another specific embodiment of the utility model, a sealing gasket is arranged at the flange.
As another specific embodiment of the present invention, the intake pipe is horizontally or obliquely upward along the exhaust direction of the exhaust passage.
The utility model has the following beneficial effects:
the fireproof check valve is arranged outside the residential exhaust passage, so that the internal space of the residential exhaust passage is not completely occupied, and the exhaust process of smoke of the residential exhaust passage is not obstructed, thereby reducing the wind resistance of the whole system;
the valve seat of the fireproof check valve is inclined upwards relative to the flange along the exhaust direction of the exhaust channel, the air inlet pipe is arranged on the valve seat, and the exhaust branch pipe connected with the air inlet pipe is also inclined correspondingly, so that the downward bending of the exhaust branch pipe is prevented, oil stains accumulated in the exhaust branch pipe can be removed in time, and the airflow wind resistance of the exhaust branch pipe is reduced; meanwhile, in the process that the smoke of the range hood or the exhaust fan flows into the residential exhaust duct, the smoke does not need to turn through a 90-degree right angle, so that the wind resistance is small, and the smoke discharging effect is good.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the installation of embodiment 1 of the fire check valve of the present invention;
FIG. 2 is a first schematic structural view of embodiment 1 of the fire check valve of the present invention;
FIG. 3 is a second schematic structural view of embodiment 1 of the fire check valve of the present invention;
FIG. 4 is a side schematic view of embodiment 1 of the fire check valve of the present invention;
FIG. 5 is a schematic view of the venting of embodiment 1 of the fire check valve of the present invention after the flap has opened;
fig. 6 is another structural view of the valve seat in embodiment 1 of the fire check valve of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Example 1
The present embodiment provides a smooth air intake fire check valve 100 installed outside a residential exhaust duct 200, as shown in fig. 1; wherein the fire check valve 100 includes a valve housing 110, a valve seat 120, a flap 130, a flange 140, and an inlet tube 150, as shown in fig. 2-6.
Wherein the valve housing 110 is used for providing the exhaust passage, the flange 140 is located at the outlet side of the exhaust passage, the valve housing 110 is mounted on the residential exhaust passage 200 through the flange 140 and is located outside the residential exhaust passage 200, and accordingly, a packing 141 and a connection bracket 142 are provided at the flange 140 to form a sealing connection fit.
The valve seat 120 is located on the intake side of the exhaust passage, and the valve flap 130 is disposed on the valve housing 110 and cooperates with the valve seat 120 to open or close the exhaust passage, wherein the valve flap 130 at least has a circular contour for forming a sealing fit, which may be a single-piece circle, a half-square semicircle or a square disc shape with an outer contour, and correspondingly, the valve flap 130 is provided with a sealing ring 131 for forming a sealing fit with the valve seat 120.
Specifically, the valve seat 120 is inclined upward in the exhaust direction of the exhaust passage with respect to the flange 140, and the intake pipe 150 is disposed on the intake side of the valve seat 120 and communicates with the exhaust passage, wherein the intake pipe 150 is inclined upward in the exhaust direction of the exhaust passage, as shown in fig. 4 to 5, and in other preferred examples of the present invention, the intake pipe 150 may be disposed horizontally in the exhaust direction of the exhaust passage, as shown in fig. 6.
The inlet conduit 150 in this embodiment is inclined in the same direction as the valve seat 120 so that the gas entering the exhaust passage from within the inlet conduit 150 has an upwardly inclined flow direction, as shown in figure 5.
Specifically, the included angle α between the plane of the valve seat 120 and the vertical plane is not more than 60 °, preferably, the included angle α between the plane of the valve seat 120 and the vertical plane is 10 ° to 30 °, for example, the included angle α between the plane of the valve seat 120 and the vertical plane shown in fig. 4 is 13 °.
Further, in order to facilitate quick gas discharge, the valve housing 110 in this embodiment is a flow guiding valve housing, the valve housing 110 has a top wall plate 111, the top wall plate 111 is located above the valve flap 130, wherein at least part of gas flowing through the top wall plate 111 keeps its original flow direction, and then the flue gas entering the valve housing 110 can directly flow upwards when being discharged, on one hand, the flue gas going out from the valve housing 110 (exhaust passage) can directly converge with the airflow in the house exhaust passage 200, and on the other hand, the exhaust speed can be kept, and then the flue gas can be smoothly discharged.
Still further, the angle β formed between the top wall plate 111 and the valve seat 120 exceeds 90 °, i.e., the angle between the top wall plate 111 and the horizontal plane is also formed to keep the gas entering the valve housing 110 obliquely discharged upward, as shown in fig. 4-5, and the angle β formed between the top wall plate 111 and the valve seat 120 is 110 ° in this embodiment.
The valve seat 120 of this embodiment is provided with a circular ring seat 121 which is matched with the valve flap 130 to form a sealing connection, the valve flap 130 is covered on the circular ring seat 121, wherein the circular ring seat 121 extends perpendicularly outwards from the inner edge of the circular ring seat 121 to form an air inlet pipe 150, so that all the gas exhausted from the air inlet pipe 150 directly enters the exhaust passage.
Wherein the gas entering the valve housing 110 through the gas inlet pipe 150 is not blocked at all and can directly enter the valve housing 110 in its entirety and finally be discharged.
In this embodiment, the valve housing 110 has a front end plate 112, the annular seat 121 is recessed in the direction opposite to the airflow direction to form a groove-shaped seat, and the valve flap 130 completely covers the annular seat 121, as shown in fig. 4, but in other embodiments of the present invention, the annular seat 121 may also be a convex seat protruding from the front end plate 112 in the airflow direction, as shown in fig. 6.
The valve housing 110 in this embodiment further has two side wall plates 113, the two side wall plates 113 being located at left and right sides of the top wall plate 111, respectively, wherein the opened valve flap 130, the two side wall plates 113 and the top wall plate 111 form a guide passage to guide the gas introduced therein to flow obliquely upward, as shown in fig. 5.
The two side wall plates 113, the top wall plate 111 and the opened valve flap 130 form a nearly closed flow guide channel, and after gas flowing in from the inlet pipe 150 and the valve seat 120 enters the flow guide channel, the gas is naturally and smoothly discharged upwards into the residential exhaust duct, and no turbulence or vortex phenomenon exists at the inlet of the residential exhaust duct. Preferably, when a circular flap 130 is used, a square baffle 132 having a range may be provided behind the flap 130, as shown in fig. 3, to direct the gas to flow obliquely upward and not to the other direction.
In this embodiment, the residential exhaust duct 200 is supported and fixed by the building wall 300 and the building floor 400, the residential exhaust duct 200 is provided with the air inlet 201, the valve casing 110 is installed outside the air inlet 201, and specifically, the air inlet pipe 150 is connected with the range hood 600 or the exhaust fan through the exhaust branch pipe 500 to exhaust indoor smoke.
The valve seat 120 and the air inlet pipe 150 are inclined upwards along the air exhaust direction, and the exhaust branch pipe 500 connected with the valve seat is also inclined upwards, so that the exhaust branch pipe 500 is prevented from being bent downwards, oil stains accumulated in the exhaust branch pipe 500 can be discharged in time, and the airflow wind resistance of the exhaust branch pipe 500 is reduced; meanwhile, in the process that the smoke of the range hood 600 or the exhaust fan flows into the residential exhaust duct 200, the smoke does not need to turn through a 90-degree right angle, so that the wind resistance is very small, and the smoke discharge effect is very good.
The above descriptions are applicable to the prior art, such as a flap opening and closing mechanism for opening and closing the flap 130, a fire prevention actuator activated in case of fire to close and lock the flap 130 in the closed position, and the description of the embodiment is omitted.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the utility model, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (9)
1. The utility model provides a smooth fire prevention check valve of admitting air, its characterized in that includes valve casing, valve seat, valve clack, flange and intake pipe, the valve casing is used for providing exhaust passage, the flange is located exhaust passage's one side of giving vent to anger, the valve casing passes through the flange is installed on house exhaust passage and is located the outside of house exhaust passage, the valve seat is located exhaust passage's one side of admitting air, the intake pipe set up in the side of admitting air of valve seat and be linked together with exhaust passage, the valve clack set up in on the valve casing and with the valve seat cooperation is opened or is closed this exhaust passage, wherein the valve seat for the flange is upwards along exhaust passage's exhaust direction slope.
2. The air intake unobstructed fire resistant check valve as recited in claim 1, wherein said flap has at least a circular contour for forming a sealing fit, said valve seat having at least a circular seat for mating with said flap, said circular contour overlying said circular seat.
3. An unobstructed intake fire prevention check valve as defined in claim 2 wherein said inner edge of said annular seat extends vertically outwardly to form said intake conduit whereby all of the gas in said intake conduit passes directly into the exhaust passage.
4. The unobstructed intake fire check valve as recited in claim 2, wherein said valve housing has a front end plate, said annular seat being disposed on said front end plate and recessed toward said intake pipe to form a grooved seat against which the circular contour of said valve flap is seated.
5. The unobstructed intake fire check valve as defined in claim 2, wherein said valve housing has a front end plate, said annular seat being disposed on said front end plate and projecting in the direction of exhaust of the exhaust passage to form a convex seat against which the circular contour of said valve flap fits.
6. Unobstructed incoming fire check valve as defined in claim 1, wherein said angle between the plane of said seat and the plane of said flange is no more than 60 °.
7. An unobstructed inlet fire prevention check valve as defined in claim 6, wherein the angle between the plane of said seat and the plane of said flange is between 10 ° and 30 °.
8. Unobstructed incoming fire check valve as defined in claim 1 wherein said flange is provided with a gasket.
9. Unobstructed incoming fire check valve as defined in claim 1, wherein said incoming air tube is horizontal or angled upward in the direction of exhaust of the exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122555030.7U CN216479099U (en) | 2021-10-22 | 2021-10-22 | Unobstructed fire prevention check valve admits air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122555030.7U CN216479099U (en) | 2021-10-22 | 2021-10-22 | Unobstructed fire prevention check valve admits air |
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| Publication Number | Publication Date |
|---|---|
| CN216479099U true CN216479099U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122555030.7U Active CN216479099U (en) | 2021-10-22 | 2021-10-22 | Unobstructed fire prevention check valve admits air |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790291A (en) * | 2021-10-22 | 2021-12-14 | 广州市彩蝶节能技术有限公司 | Fireproof check valve |
| CN113864499A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with internal and external double fireproof functions |
| CN113864492A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
-
2021
- 2021-10-22 CN CN202122555030.7U patent/CN216479099U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790291A (en) * | 2021-10-22 | 2021-12-14 | 广州市彩蝶节能技术有限公司 | Fireproof check valve |
| CN113864499A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with internal and external double fireproof functions |
| CN113864492A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
| CN113864499B (en) * | 2021-10-22 | 2024-03-15 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with inner and outer fireproof functions |
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