CN216479098U - Outer water conservancy diversion formula fire prevention check valve - Google Patents
Outer water conservancy diversion formula fire prevention check valve Download PDFInfo
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- CN216479098U CN216479098U CN202122553515.2U CN202122553515U CN216479098U CN 216479098 U CN216479098 U CN 216479098U CN 202122553515 U CN202122553515 U CN 202122553515U CN 216479098 U CN216479098 U CN 216479098U
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Abstract
The utility model provides an external flow guiding type fireproof check valve which is arranged on a residential exhaust passage and positioned outside the residential exhaust passage. The fireproof check valve is completely arranged outside the residential exhaust duct, does not occupy the internal space of the residential exhaust duct, does not obstruct the smoke emission of the residential exhaust duct, and has the advantages of small system wind resistance and good smoke emission effect.
Description
Technical Field
The utility model belongs to the technical field of residential exhaust ducts, and particularly relates to an external diversion type fireproof check valve.
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.
Fireproof check valve among the prior art is interior water conservancy diversion formula fireproof check valve, fireproof check valve installs the air inlet department at house exhaust passage, its water conservancy diversion part is mainly located the inside of house exhaust passage, need occupy certain house exhaust passage inner space, for example, chinese patent application 2016106548305 discloses a fireproof 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, fireproof check valve still includes the mounting and is used for slowing down the flexible piece of valve block striking 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 2018112855827 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.
The above prior art mainly has the following defects: 1) the occupation of the internal space of the residential exhaust duct can block the emission of the smoke of the residential exhaust duct, and the system has large wind resistance and poor smoke emission effect; 2) the fireproof check valve is easy to be blocked by construction waste, so that the fireproof check valve is ineffective; 3) oil stains accumulated in the residential exhaust duct are not easy to clean, and fire safety hazards exist when the oil stains are accumulated on the surface of the residential exhaust duct.
Therefore, improvements are needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the external flow guide type fireproof check valve which is completely arranged outside the residential exhaust passage, does not occupy the internal space of the residential exhaust passage and does not obstruct the smoke emission of the residential exhaust passage, and has the advantages of small system wind resistance and good smoke emission effect.
In order to achieve the above object, the present invention provides an external flow guiding type fire-proof check valve, which is installed on a residential exhaust passage and located outside the residential exhaust passage, and includes a valve body and a valve flap, wherein the valve flap is openably and closably disposed in the valve body, the valve body is provided with a valve casing having a flow guiding function, and a flow guiding portion is disposed on the valve casing, and the flow guiding portion can guide gas flowing in through the opened valve flap to flow into the residential exhaust passage.
As another specific embodiment of the present invention, the valve body includes a valve shaft, the valve shaft is disposed near the bottom of the valve housing and inside the valve housing, and the valve flap is connected to the valve housing through the valve shaft, wherein the flow guiding portion is located on the upper side of the valve flap.
In another embodiment of the present invention, the guiding portion comprises at least one inclined guiding plate for guiding the gas to flow obliquely upwards.
As another embodiment of the utility model, the angle between the plane of the baffle and the horizontal plane is not more than 75 °.
As another specific embodiment of the utility model, the included angle between the plane of the guide plate and the horizontal plane is 20-40 degrees.
As another specific embodiment of the utility model, the valve flap is a single-flap circular, half-square semicircular or square disk.
As another specific embodiment of the utility model, the valve body is provided with a flange skirt for connection, and the flange skirt corresponds to the air inlet of the residential exhaust passage.
The utility model further comprises a bracket for fixedly connecting the valve body to the air inlet of the residential exhaust duct, wherein the bracket comprises a connecting bracket and a mounting bracket, the connecting bracket is connected with the valve body, the mounting bracket is provided with a locking bolt, and the connecting bracket corresponds to the flange skirt.
As another specific embodiment of the utility model, the connecting bracket is provided with a plurality of connecting positions and is connected with the valve body through different connecting positions, so that the distance between the mounting bracket and the flange skirt edge is changed.
The utility model has the following beneficial effects:
the fireproof check valve does not occupy the internal space of the residential exhaust passage completely, does not block the smoke emission of the residential exhaust passage, and a flow guide structure does not exist in the whole residential exhaust passage any more, so that the smoke is discharged without block;
the fireproof check valve is not influenced by building construction after being installed, and the fireproof check valve installed outside the residential exhaust duct cannot be blocked and damaged by building construction garbage.
The oil stain accumulated in the residential exhaust duct adopting the fireproof check valve is easy to clean, and the potential safety hazard caused by the oil stain accumulated on the outer surface of the residential exhaust duct is reduced.
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 present invention;
FIG. 2 is a first schematic structural diagram of a fire check valve according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram II of the fireproof check valve in embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a valve body according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of the exhaust after the valve flap is opened in embodiment 1 of the present invention;
FIG. 6 is a schematic side view of a valve body according to embodiment 1 of the present invention;
FIG. 7 is a schematic structural view of a stent according to example 1 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.
The upper part, the lower part, the left part and the right part of the utility model are all installed as references according to the vertical mode of the residential exhaust duct, and it should be understood that the installation direction of the fireproof check valve can be changed under the specific application scene, and the fireproof check valve is not limited to the direction shown in the attached drawings of the specification.
Example 1
The present invention provides an external-diversion-type fire check valve 100, as shown in fig. 1, the fire check valve 100 is installed on a residential exhaust duct 200 and is located outside the residential exhaust duct 200.
The residential exhaust duct 200 is supported and fixed by a building wall 300 and a building floor 400, an air inlet 201 is arranged on the residential exhaust duct 200, the fireproof check valve 100 is arranged on the outer side of the air inlet 201, and specifically, the air inlet side of the fireproof check valve 100 is connected with a range hood or an exhaust fan 600 through an exhaust branch pipe 500 to exhaust indoor smoke.
The fireproof check valve 100 is creatively arranged outside the residential exhaust passage 200 in the embodiment, so that the internal space of the residential exhaust passage 200 is not occupied completely, the smoke emission of the residential exhaust passage 200 is not blocked, a flow guide structure does not exist in the whole residential exhaust passage 200 any more, the smoke is discharged without blocking, the whole wind resistance of the residential exhaust passage 200 system is small, and the smoke emission effect is good.
As shown in fig. 2 to 7, the fire check valve 100 of the present embodiment includes a valve body 110 and a flap 120.
The valve body 110 includes a flange skirt 130, a valve housing 140, a valve seat 150 and an air inlet pipe 160, the valve housing 140 is used for providing an upward inclined exhaust passage, the valve seat 150 is disposed on the valve housing 140 and located at an air inlet side of the exhaust passage, the flange skirt 130 is disposed on the valve housing 140 and located at an air outlet side of the exhaust passage, wherein the flange skirt 130 is used for connecting with an air inlet 201 of the residential exhaust passage 200 for smoke evacuation.
Correspondingly, a bracket 141 for installation is further arranged on the valve casing 140 so as to form a sealing fit connection between the flange skirt 130 and the air inlet 201 of the residential exhaust duct 200; as shown in fig. 7, the bracket 141 includes a connection bracket 1411 and a mounting bracket 1412, the connection bracket 1411 is connected with the valve housing 140, and the mounting bracket 1412 is provided with a locking bolt 1413, wherein the connection bracket 1411 corresponds to the flange skirt 130.
Specifically, the connecting bracket 1411 is provided with a plurality of connecting positions 1414, the connecting positions 1414 are threaded holes, the valve housing 140 is provided with positioning screws 147, and the distance between the mounting bracket 1412 and the flange skirt 130 is changed by connecting the different connecting positions 1414 with the screws 147 on the valve housing 140 so as to adapt to residential exhaust ducts with different thicknesses.
The valve flap 120 is rotatably disposed on the valve housing 140 and cooperates with the valve seat 150 to open or close the exhaust passage, thereby opening the valve flap 120 when smoke exhaust is required and closing the valve flap 120 when smoke exhaust is completed.
The valve flap 120 in the present embodiment adopts a single-flap rotation form, and in other preferred examples, the valve flap can be modified according to design requirements, and is not limited here; specifically, as shown in fig. 3, the valve housing 140 in this embodiment has a bottom wall plate 142, the valve shaft 121 is disposed on the bottom wall plate 142, the valve flap 120 is rotatably disposed on the valve housing 140 through the valve shaft 121, and correspondingly, a fire-proof actuator 170 is disposed on the back side of the valve flap 120, that is, the valve flap 120 is locked on the valve seat 150 through the fire-proof actuator and is always in the closed position in case of fire, and the specific structure of the fire-proof actuator 170 is not limited herein.
The valve housing 140 is provided with a flow guiding portion 143, the flow guiding portion 143 cooperates with the opened valve flap 120 to guide the gas to be discharged obliquely upward from the gas outlet side of the exhaust passage, the flow guiding portion 143 at least comprises a flow guiding plate 144, and the flow guiding plate 144 is located on the upper side of the valve flap 120 and obliquely upward along the exhaust direction of the exhaust passage.
Specifically, the baffle 144 in this embodiment serves as a top wall of the valve housing 140, and in other examples, the baffle 144 may be disposed in the inner space of the valve housing 140 to guide the gas to be discharged obliquely upward.
As shown in fig. 4, the included angle α between the plane of the diversion plate 144 and the horizontal plane is not more than 75 °, and preferably, the included angle α between the plane of the diversion plate 144 and the horizontal plane is 20 ° to 40 °, so as to improve the diversion efficiency on the basis of diversion, so that the gas exhausted through the exhaust channel can quickly and naturally enter the residential exhaust duct 200 and finally be exhausted from the roof, thereby realizing high-altitude exhaust.
The angle α between the plane of the deflector 144 and the horizontal in this embodiment is 30 °.
Further, the valve housing 140 in this embodiment has two side wall plates 145, the two side wall plates 145 being located at the left and right sides of the flow guide plate 144, respectively, wherein the opened valve flap 120, the two side wall plates 145 and the flow guide plate 144 form a flow guide channel to guide the gas entering therein to flow obliquely upward, as shown in fig. 5.
The two sidewall plates 145, the baffle plate 144 and the opened flap 120 form a nearly closed guide passage which is inclined upwards, and the gas flowing in from the inlet pipe 160 and the valve seat 150 enters the guide passage and is naturally and smoothly discharged upwards into the residential exhaust, and no turbulence or vortex phenomenon exists at the inlet of the residential exhaust. Preferably, when a circular flap 120 is used, a rectangular baffle 122 with a certain range can be arranged behind the flap 120, as shown in fig. 3, to form a nearly closed exhaust channel which is inclined upwards, so as to guide the smoke to flow obliquely upwards and prevent the smoke from flowing to other directions; similarly, the rectangular baffle 122 can also be directly disposed on the valve housing 140, so as to form a flow guiding effect without interfering with the opening of the valve flap 120.
In other examples, the valve flap 120 may also be a single-flap circular shape, a half-square semicircular shape, or a square disc shape as long as the flow guiding effect is satisfied, and a description thereof is omitted.
In order to accelerate the discharge of the gas and reduce the windage of the exhaust fumes, the plane of the valve seat 150 in this embodiment is inclined downward toward the intake side of the exhaust passage, so that the gas entering the exhaust passage through the valve seat 150 has an inclined upward flow direction, as shown in fig. 5.
The air inlet pipe 160 is connected to the valve seat 150 in a manner of inclining upward along the exhaust direction relative to the horizontal plane, and at this time, the air flows into the exhaust passage through the air inlet pipe 160 to keep the original flow direction, so that the rapid smoke exhaust and exhaust are realized; meanwhile, the exhaust branch pipes 500 connected to the inclined air inlet pipe 160 are also installed in an inclined manner, so that the condition that the traditional exhaust branch pipes need to be bent by 90 degrees is avoided, oil stains accumulated in the exhaust branch pipes 500 can be discharged in time, and the airflow wind resistance of the exhaust branch pipes 500 is reduced.
Preferably, the air inlet tube 160 is perpendicular to the valve seat 150.
In this embodiment, the included angle β between the plane of the valve seat 150 and the vertical plane is not more than 75 °, as shown in fig. 4, preferably, the included angle β between the plane of the valve seat 150 and the vertical plane is 5 ° to 20 ° to form an inclined upward flow of the gas, and the smoke in the household room smoothly flows through the air inlet pipe 160, the valve seat 150, and the exhaust channel (diversion channel), and then is discharged into the air inlet 201 of the residential exhaust duct 200 obliquely upward, so that the wind resistance in the whole process is greatly reduced.
The angle β between the plane of the valve seat 150 in this embodiment and the vertical plane is 13 °.
Specifically, the valve housing 140 has a front end plate 146 having the same inclination as the valve seat, the valve seat 150 is an annular seat fitted with the valve flap 120, the valve seat 150 is disposed on the front end plate 146 and is recessed toward the intake pipe 160 to form a groove seat, and the valve flap 120 is covered on the groove seat to form a sealing connection.
The valve seat 150 and the air inlet pipe 160 are inclined downwards, and the exhaust branch pipe 500 connected with the valve seat and the air inlet pipe is also inclined downwards, so that the exhaust branch pipe 500 is 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 small, and the smoke discharging effect is good.
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 outer diversion type fireproof check valve is characterized by being installed on a residential exhaust passage and located outside the residential exhaust passage and comprising a valve body and a valve clack, wherein the valve clack can be arranged in the valve body in an opening and closing mode, the valve body is provided with a valve casing with a diversion function, a diversion part is arranged on the valve casing, and the diversion part can guide gas flowing in through the opened valve clack to flow into the residential exhaust passage.
2. The external flow guiding type fire prevention check valve of claim 1, wherein the valve body includes a valve shaft disposed inside the valve housing near a bottom of the valve housing, the valve flap being connected to the valve housing through the valve shaft, wherein the flow guiding portion is located on an upper side of the valve flap.
3. The externally-guided fire protection check valve of claim 2, wherein the deflector includes at least one inclined deflector for directing the gas to flow obliquely upward.
4. The external-flow fire-resistant check valve of claim 3 wherein the angle between the plane of the deflector and the horizontal is no more than 75 °.
5. The external flow-guide fire-proof check valve of claim 4, wherein the angle between the plane of the flow guide plate and the horizontal plane is 20-40 °.
6. The external-flow fire-resistant check valve of claim 1 wherein the flap is a single-lobed circular, half-square semi-circular, or square disk.
7. The external flow guiding type fireproof check valve as claimed in claim 1, wherein the valve body is provided with a flange skirt for connection, and the flange skirt corresponds to the air inlet of the residential exhaust duct.
8. The externally guided fire protection check valve of claim 7, further comprising a bracket for fixedly attaching the valve body to the intake port of the residential exhaust duct, the bracket comprising a connecting bracket and a mounting bracket, the connecting bracket being connected to the valve body, the mounting bracket having a locking bolt, wherein the connecting bracket corresponds to the flange skirt.
9. The external flow fire check valve of claim 8 wherein the attachment bracket has a plurality of attachment locations for attachment to the valve body at different attachment locations to vary the spacing between the mounting bracket and the flange skirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122553515.2U CN216479098U (en) | 2021-10-22 | 2021-10-22 | Outer water conservancy diversion formula fire prevention check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122553515.2U CN216479098U (en) | 2021-10-22 | 2021-10-22 | Outer water conservancy diversion formula fire prevention check valve |
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| Publication Number | Publication Date |
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| CN216479098U true CN216479098U (en) | 2022-05-10 |
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| CN202122553515.2U Active CN216479098U (en) | 2021-10-22 | 2021-10-22 | Outer water conservancy diversion formula fire prevention check valve |
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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 CN202122553515.2U patent/CN216479098U/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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