CN216479144U - Fireproof check valve with internal and external double fireproof functions - Google Patents
Fireproof check valve with internal and external double fireproof functions Download PDFInfo
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- CN216479144U CN216479144U CN202122555028.XU CN202122555028U CN216479144U CN 216479144 U CN216479144 U CN 216479144U CN 202122555028 U CN202122555028 U CN 202122555028U CN 216479144 U CN216479144 U CN 216479144U
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Abstract
The utility model provides a fireproof check valve with an internal and external double fireproof functions, which comprises a valve body, a valve clack, a fireproof actuating mechanism and a temperature sensing element, wherein the fireproof actuating mechanism is used for locking the valve clack and keeping the valve clack in a closed state when a fire disaster happens, the fireproof actuating mechanism is positioned on the back side of the valve clack, the temperature sensing element comprises an internal temperature sensing element positioned in the valve body and an external temperature sensing element positioned outside the valve body, the internal temperature sensing element is used for sensing the temperature inside an exhaust duct of a house and limiting the fireproof actuating mechanism, the external temperature sensing element is used for sensing the temperature outside the exhaust duct of the house, a through hole is formed in the valve body, the internal temperature sensing element and/or the external temperature sensing element can penetrate through the through hole, the internal temperature sensing element and the external temperature sensing element are in heat conduction connection, the internal temperature sensing element and/or the external temperature sensing element are separated after being heated during the fire disaster, and the limiting of the internal temperature sensing element on the fireproof actuating mechanism is invalid. The utility model can sense the indoor temperature change and the temperature change in the house exhaust passage in time, and has the advantages of simple structure and strong practicability.
Description
Technical Field
The utility model belongs to the technical field of fireproof check valves, and particularly relates to a fireproof check valve with an internal and external fireproof function.
Background
The fire-proof check valve is one of the important components of the residential exhaust duct system, and the main functions of the fire-proof check valve are divided into the following three aspects:
1) flow guiding function: the smoke in the house is guided to be exhausted upwards into the house exhaust passage in an organized way and finally exhausted from the roof, so that the high-altitude emission is realized. The air curtain and the vortex are prevented from being formed at the air inlet of the residential exhaust duct, and the smoke discharge resistance is reduced.
2) Check function: when the smoke is discharged, the valve clack is opened under the pushing of the wind power of the range hood or the exhaust fan, and the smoke is allowed to flow into the exhaust passage; when the smoke discharge is stopped, the valve clack is automatically closed under the action of gravity/spring force, so that the smoke backflow is prevented, and the smoke and odor mixing phenomena are avoided.
3) Fireproof effect: in case of fire, when the temperature rises to a specified value, the fire-proof executing mechanism acts to force the valve clack to be forcibly closed and locked in a closed state, so that the spread of smoke and fire is avoided, and the fire-proof safety is ensured.
At present, the fireproof check valves in the prior art have different fireproof structures, for example, the chinese patent application cn200920212736.x discloses a side-opening fireproof check valve which is installed and fixed on the outer wall of an exhaust passage and consists of a check valve and a fireproof valve, the check valve and the fireproof valve are connected through a fixing piece, the fireproof valve comprises a reversible cover plate and a base for installing the cover plate, the cover plate is supported by a spring and a fusible support part to be in a normally open state, one end of the support part is connected with a valve body of the fireproof valve, and the other end is connected with the cover plate, wherein the reversible cover plate is in a side-opening type, is laterally installed on the fireproof valve and can be transversely turned around a shaft to close or open an opening of a diversion flue; the fusible support member of (a) includes at least two fusing points.
For another example, chinese patent application 201710954705.0 discloses a fire-proof check valve, including the valve body and locate the valve block in the valve body, its characterized in that still includes locking device, and locking device includes the drive arrangement that drives the valve block closure and the hot melt retaining member of spacing drive arrangement, and when the hot melt retaining member did not melt, locking device locked drive arrangement, and the valve block can normally be opened and support and carry out spacingly on the drive arrangement, and when the hot melt retaining member melted, locking device removed the locking to the valve block, and drive arrangement drive valve block is in the closed condition.
However, the fire-proof structure adopted in the prior art is either aimed at external fire-proof of the residential exhaust duct or aimed at internal fire-proof of the residential exhaust duct, or two sets of fire-proof structures are arranged to respectively correspond to the residential exhaust duct and the indoor, so that the structure of the fire-proof check valve is extremely complex, and the fire-proof structure is arranged in the exhaust passage, so that the exhaust resistance is increased.
Therefore, improvements are needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a fireproof check valve with an internal and external double fireproof function, which can sense the indoor temperature change and the temperature change in a house exhaust passage in time and has the advantages of simple structure and strong practicability.
In order to achieve the above object, the present invention provides a fire-proof check valve with internal and external dual fire-proof functions, which comprises a valve body, a valve flap, a fire-proof actuator and a temperature-sensing element, wherein the fire-proof actuator is used for locking and keeping the valve flap in a closed state when a fire occurs, the fire-proof actuator is located on the back side of the valve flap, the temperature-sensing element comprises an internal temperature-sensing element located in the valve body and an external temperature-sensing element located outside the valve body, the internal temperature-sensing element is used for sensing the temperature inside an exhaust duct of a house and simultaneously limiting the fire-proof actuator, the external temperature-sensing element is used for sensing the temperature outside the exhaust duct of the house, the valve body is provided with a through hole, and the internal temperature-sensing element and/or the external temperature-sensing element can pass through the through hole, the inner temperature sensing piece and the outer temperature sensing piece are in heat conduction connection, the inner temperature sensing piece and/or the outer temperature sensing piece are/is separated after being heated in a fire disaster, and the inner temperature sensing piece is ineffective in limiting the fire-proof execution mechanism.
As another specific embodiment of the utility model, the inner temperature sensing member and the outer temperature sensing member are bonded together by using a temperature-controlled fusible metal.
As another specific embodiment of the utility model, the fire-proof actuator at least comprises an elastic element and an actuating element, and the inner temperature sensing element and the actuating element are in limit connection and simultaneously compress the elastic element.
As another specific embodiment of the utility model, the valve body is arranged on the residential exhaust duct and is positioned outside the residential exhaust duct.
As another specific embodiment of the utility model, the valve body is provided with an air inlet pipe communicated with the indoor exhaust branch pipe, and the external temperature sensing piece is positioned outside the air inlet pipe.
In another embodiment of the utility model, the valve body has a bottom wall plate, the fire-protection actuator is arranged on the bottom wall plate, the through hole is arranged on the bottom wall plate, and at least part of the external temperature sensing element is arranged below the bottom wall plate.
As another specific embodiment of the present invention, the outer temperature sensing member includes a temperature sensing connecting rod and a locking member, the locking member locks the temperature sensing connecting rod at the through hole, and the temperature sensing connecting rod penetrates from the through hole to the inner side of the valve body and is connected to the inner temperature sensing member.
In another embodiment of the present invention, the locking member is a temperature sensing nut, and one end of the temperature sensing connecting rod is provided with a thread engaged with the temperature sensing nut.
The utility model has the following beneficial effects:
the utility model senses the temperature of the environment in the house exhaust duct through the inner temperature sensing element, senses the outside (indoor) of the house exhaust duct through the outer temperature sensing element, simultaneously detects the temperature of the inside and the outside of the house exhaust duct by connecting the inner temperature sensing element and the outer temperature sensing element, limits the executing element through the inner temperature sensing element, leads the inner temperature sensing element and the outer temperature sensing element to be separated once a fire disaster occurs, and utilizes the elastic element and the fire-proof executing mechanism to generate corresponding fire-proof executing action so as to lock the valve clack and keep the closing state.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a fire check valve according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the closed position of the valve flap according to example 1 of the present invention;
FIG. 3 is a first schematic view showing the valve flap locked in the embodiment 1 of the present invention;
FIG. 4 is a second schematic view showing the valve flap locked in the embodiment 1 of the present invention;
FIG. 5 is a schematic structural diagram of a fire-proof actuator according to embodiment 1 of the present invention;
FIG. 6 is a schematic structural diagram of an actuator according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of an inner temperature-sensing element and an outer temperature-sensing element according to embodiment 1 of the present invention;
fig. 8 is a schematic view of the installation of the fire check valve according to embodiment 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.
Example 1
The utility model provides a fireproof check valve with internal and external double fireproof functions, which comprises a valve body 100, a valve clack 200, a fireproof actuator 300 and a temperature sensing element 400, wherein the fireproof actuator 300 is used for locking and keeping the valve clack 200 in a closed state, and the fireproof actuator 300 is positioned on the back side of the valve clack 200, as shown in figures 1 to 8.
The temperature sensing element 400 comprises an inner temperature sensing element 410 positioned in the valve body 100 and an outer temperature sensing element 420 positioned outside the valve body 100, the inner temperature sensing element 410 is used for sensing the temperature inside the residential exhaust duct 500, the outer temperature sensing element 420 is used for sensing the temperature outside the residential exhaust duct 500, the valve body 100 is provided with a through hole 101, the inner temperature sensing element 410 and/or the outer temperature sensing element 420 can penetrate through the through hole 101, the inner temperature sensing element 410 and the outer temperature sensing element 420 are connected, the inner temperature sensing element and/or the outer temperature sensing element are separated after being heated in case of fire, and the fire-proof execution mechanism 300 generates corresponding fire-proof execution action so as to lock the valve clack 200 and keep the valve clack in a closed state.
Specifically, the inner temperature sensing member 410 and the outer temperature sensing member 420 are bonded together by using the temperature controlled fusible metal 430, wherein when the fire check valve of the present embodiment is applied to a kitchen, the melting point of the temperature controlled fusible metal 430 is 150 ℃, and when the fire check valve is applied to a toilet, the melting point of the temperature controlled fusible metal 430 is 70 ℃, and the melting point of the specific temperature controlled fusible metal 430 can be selectively adjusted according to regulations.
Further, as shown in fig. 7, the outer temperature sensing member 420 includes a temperature sensing connecting rod 421 and a locking member 422, the locking member 422 locks the temperature sensing connecting rod 421 at the through hole 101, and the temperature sensing connecting rod 421 penetrates from the through hole 101 to the inner side of the valve body 100 and is connected to the inner temperature sensing member 410.
Preferably, the locking member 422 is a temperature sensing nut, and one end of the temperature sensing connecting rod 421 is provided with a thread engaged with the temperature sensing nut; in other preferred examples of the present invention, the outer temperature sensing member 420 may be fixedly coupled to the valve body 100 by riveting, welding or bolting.
Still further, the valve body 100 has a bottom wall plate 102, the fire prevention actuator 300 is disposed on the bottom wall plate 102, the through hole 101 is located on the bottom wall plate 102, and at least a portion of the external temperature sensing member 420 is located below the bottom wall plate 102 so as to sense the indoor ambient temperature, and in other preferred examples of the present invention, the external temperature sensing member 420 may also be located at a lower end, an upper end, a front end, or both sides of the valve body 100, which will not be described herein by way of example.
In this embodiment, the valve body 100 is installed on the residential exhaust duct 500 and is located outside the residential exhaust duct 500, as shown in fig. 8, wherein the valve body 100 is provided with an air inlet pipe 103 communicated with an indoor exhaust branch pipe 600, and the external temperature sensing member 420 is located outside the air inlet pipe 103, so as to directly sense the temperature of the external (indoor) environment of the residential exhaust duct 500.
An exemplary fire prevention actuator of this embodiment is shown in fig. 1-6. a fire prevention actuator 300 includes a support 310, a shaft 320, a resilient member 330, and an actuator 340;
the support 310 is disposed on the valve body 100 and located on the back side of the valve flap 200, the rotating shaft 320 is disposed on the support 310 and parallel to the valve shaft 201 on the valve flap 200, the elastic member 330 is disposed on the support 310 and located at the rotating shaft 320, preferably, the elastic member 330 is a torsion spring, the actuating member 340 has a connecting portion 341 and an acting portion 342, and the connecting portion 341 of the actuating member 340 is connected to the rotating shaft 320;
specifically, a through hole 343 is formed in the action part 342 of the actuator 340, and the inner temperature sensing element 410 penetrates out of the through hole 343 and limits the action part 342 through the connecting pin 350, so as to limit the action part 342 from rotating around the rotating shaft 320;
when fire occurs, the outer temperature sensing element 420 and/or the inner temperature sensing element 410 are separated from each other under the action of high temperature, and the actuating element 340 rotates around the rotating shaft 320 by the elastic element 330, so that the acting part 342 of the actuating element 340 is abutted against the valve flap 200.
The back side of the valve flap 200 is provided with a rocker arm 202 for rotational connection, the rocker arm 202 providing an engagement portion 203, and the action portion 342 being capable of abutting against the engagement portion 203 to restrict the valve flap 200 from being opened.
The action portion 342 comprises an abutting plate 344, the engagement portion 203 comprises a stop plate 204, the stop plate 204 has an edge, preferably an arc-shaped edge, and the valve flap 200 is pressed in the closed position by the abutting relationship between the abutting plate 344 and the edge without being opened, wherein a triangular support is formed among the abutting plate 344, the stop plate 204 and the support 310, and the structural stability is good.
Further, a plurality of latch teeth 205 are arranged on the edge, the abutting plate 344 is provided with an inclined surface for the latch teeth 205 to cooperate to form a ratchet tooth 345, as shown in fig. 3 and 6, a one-way sliding fit is formed between the latch teeth 205 and the ratchet tooth 345, so that the supporting relationship between the latch teeth 205 and the ratchet tooth 345 can be maintained without failure even in the case of fire, and the sealing of the valve flap 200 is realized.
In order to further improve the stability and ensure the sealing of the valve flap 200, the abutting plate 344 in this embodiment is provided with a clamping groove 346, the clamping groove 346 has an opening, the bottom of the clamping groove 346 abuts against the edge, and the left side wall and the right side wall of the clamping groove 346 are located on the two sides of the edge to form left and right limiting positions.
Still further, the matching portion 203 is provided with two stop plates 204, the two stop plates 204 are relatively fixed and are respectively located at two sides of the vertical center line of the valve flap 200, as shown in fig. 1 and 3, the abutting plate 344 is provided with two clamping grooves 346, and the two clamping grooves 346 can be matched and abutted with edges of the two stop plates 204, so as to form a multi-point support.
The valve body 100 in this embodiment is installed outside the residential exhaust duct 500, as shown in fig. 8, the outer temperature sensing member 420 is installed by penetrating the valve body 100, and a part of the outer temperature sensing member is exposed outside the valve body 100 and is not shielded by the exhaust branch pipe 600 connected to the range hood, so that the indoor temperature change can be sensed in time in case of fire; the other part of the valve body extends into the valve body 100 to be connected with the inner temperature sensing element 410, so that the temperature change of the exhausted air can be sensed in time during fire, the temperature inside and outside the residential exhaust duct 500 can be detected simultaneously, and the requirement of bidirectional fire prevention is met finally.
In order to facilitate smoke evacuation and exhaust, the valve body 100 in this embodiment is a diversion valve body, which has a top wall plate 104 that is inclined upward along the exhaust direction, so that the smoke entering the valve body 100 is rapidly exhausted to the interior of the residential exhaust duct 500, and the corresponding upper air inlet pipe 103 arranged on the valve body 100 also has the same inclined direction as the top wall plate 104 to provide an inclined upward air inlet direction, which is beneficial for the gas to rapidly enter the residential exhaust duct 500 and be exhausted upward, as shown in fig. 8; of course, other valve body 100 structures capable of achieving normal exhaust and smoke discharge may be used.
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 (8)
1. A fire-proof check valve with internal and external double fire-proof functions is characterized by comprising a valve body, a valve clack, a fire-proof actuating mechanism and a temperature sensing element, wherein the fire-proof actuating mechanism is used for locking the valve clack and keeping the valve clack in a closed state when a fire disaster happens, the fire-proof actuating mechanism is positioned on the back side of the valve clack, the temperature sensing element comprises an internal temperature sensing element positioned in the valve body and an external temperature sensing element positioned outside the valve body, the internal temperature sensing element is used for sensing the temperature inside a residential exhaust passage and limiting the fire-proof actuating mechanism, the external temperature sensing element is used for sensing the temperature outside the residential exhaust passage, a through hole is formed in the valve body, the internal temperature sensing element and/or the external temperature sensing element can penetrate through the through hole, the internal temperature sensing element and the external temperature sensing element are in heat conduction connection, and the internal temperature sensing element and/or the external temperature sensing element are separated after being heated in the fire disaster, and the inner temperature sensing piece is used for limiting the fire-proof actuating mechanism to be invalid.
2. A fire protection check valve having both inner and outer fire protection functions as claimed in claim 1, wherein said inner temperature sensing member and said outer temperature sensing member are bonded together by a temperature-controlled fusible metal.
3. A fire protection check valve with dual fire protection functions of inner and outer sides as claimed in claim 1, wherein said fire protection actuator has at least an elastic member and an actuator, and said inner temperature sensing member and said actuator are connected in a limited manner and simultaneously compress said elastic member.
4. A fire protection check valve having both inside and outside fire protection functions as claimed in claim 1, wherein the valve body is installed on the residential exhaust duct and is located outside the residential exhaust duct.
5. A fire prevention check valve with inner and outer fireproof functions as claimed in claim 4, wherein the valve body is provided with an inlet pipe communicated with an indoor exhaust branch pipe, and the outer temperature sensing member is located outside the inlet pipe.
6. A fire protection check valve having both inside and outside fire protection as claimed in claim 5, wherein said valve body has a bottom wall plate, said fire actuator is disposed on said bottom wall plate, said through hole is located on said bottom wall plate, and at least a portion of said outer temperature sensing member is located below said bottom wall plate.
7. A fire prevention check valve with dual fire prevention functions of inside and outside as claimed in claim 6, wherein said outer temperature sensing member includes a temperature sensing connecting rod and a locking member, said locking member locks said temperature sensing connecting rod at said through hole, said temperature sensing connecting rod penetrates from said through hole to the inside of said valve body and is connected to said inner temperature sensing member.
8. A fire prevention check valve with inner and outer fireproof functions as claimed in claim 7, wherein the locking member is a temperature sensing nut, and one end of the temperature sensing connecting rod is provided with a screw thread engaged with the temperature sensing nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122555028.XU CN216479144U (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with internal and external double fireproof functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122555028.XU CN216479144U (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with internal and external double fireproof functions |
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| CN216479144U true CN216479144U (en) | 2022-05-10 |
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| CN202122555028.XU Active CN216479144U (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with internal and external double fireproof functions |
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Cited By (2)
| 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 |
-
2021
- 2021-10-22 CN CN202122555028.XU patent/CN216479144U/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 |
| 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 |
| CN113790291B (en) * | 2021-10-22 | 2024-08-16 | 广州市彩蝶节能技术有限公司 | Fireproof check valve |
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