CN113864499B - Fireproof check valve with inner and outer fireproof functions - Google Patents
Fireproof check valve with inner and outer fireproof functions Download PDFInfo
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- CN113864499B CN113864499B CN202111236398.5A CN202111236398A CN113864499B CN 113864499 B CN113864499 B CN 113864499B CN 202111236398 A CN202111236398 A CN 202111236398A CN 113864499 B CN113864499 B CN 113864499B
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- 230000009471 action Effects 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 5
- 239000003517 fume Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/386—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the closure members being rotatable or pivoting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a fireproof check valve with an inner and outer fireproof function, which comprises a valve body, an openable valve clack and a fireproof executing device, wherein the valve body is arranged outside an exhaust passage of a residence; the support is arranged on the valve body and is positioned on the back side of the valve clack, the rotating shaft is arranged on the support, the elastic piece is positioned at the rotating shaft, the fireproof executing piece is provided with a connecting part and an acting part, and the connecting part of the fireproof executing piece is connected with the rotating shaft; the valve body is provided with a through hole, the external temperature sensing piece is positioned at the outer side of the valve body and communicated with the indoor environment, the internal temperature sensing piece is positioned at the inner side of the valve body and communicated with the indoor environment of the residential exhaust passage, the external temperature sensing piece and/or the internal temperature sensing piece pass through the through hole, and the internal temperature sensing piece is used for limiting the fireproof executing piece and compressing the elastic piece; the invention can timely sense the indoor temperature change and the temperature change in the residential exhaust passage, and has the advantages of simple structure and strong practicability.
Description
Technical Field
The invention belongs to the technical field of fireproof check valves, and particularly relates to a fireproof check valve with an inner fireproof function and an outer fireproof function.
Background
The fire-resistant check valve is one of the important components of the residential exhaust system, and its main functions are divided into three aspects:
1) Diversion effect: the flue gas in the house is guided to be orderly discharged upwards into the house exhaust passage and finally discharged from the roof, so that high-altitude discharge is realized. Air curtain and vortex are prevented from being formed at the air inlet of the residential exhaust passage, and the smoke discharge resistance is reduced.
2) Check function: when the smoke is discharged, the valve clack is opened under the pushing of wind power of the range hood or the exhaust fan, and the smoke is allowed to flow into the exhaust passage; when the fume emission is stopped, the valve clack is automatically closed under the action of gravity/spring force, so that the fume backflow is prevented, and the phenomena of fume and odor are avoided.
3) Fireproof effect: in case of fire, when the temperature rises to a specified value, the fireproof 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 fireproof safety is ensured.
At present, fireproof check valves in the prior art have different fireproof structures, for example, chinese patent application No. 200920212736.X discloses a side-opening type fireproof check valve which is installed and fixed on an outer wall of an exhaust passage, the fireproof check valve 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 turnover cover plate and a base for installing the cover plate, the cover plate is supported by a spring and a fusible supporting part to be in a normally open state, one end of the supporting part is connected with a valve body of the fireproof valve, and the other end of the supporting part is connected with the cover plate, wherein the turnover cover plate is in a side-opening type, is laterally installed on the fireproof valve and can transversely turn around a shaft, and closes or opens an opening of a diversion flue; the fusible support part comprises at least two fusing points.
For 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, locking device includes the closed drive arrangement of drive valve block and spacing drive arrangement's hot melt retaining member, when hot melt retaining member does not melt, locking device locks drive arrangement, the valve block can normally open and support and carry out spacingly on the drive arrangement, when hot melt retaining member melts, locking device releases the locking to the valve block, drive arrangement drive valve block is in the closed state.
However, the fireproof structure adopted in the prior art is used for performing external fireproof on the residential exhaust passage, or performing internal fireproof on the interior of the house, or setting two sets of fireproof structures corresponding to the residential exhaust passage and the interior of the house respectively, so that the fireproof check valve is complicated in structure, and the fireproof structure is arranged in the exhaust passage, so that the exhaust resistance is increased.
Therefore, improvements are needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the fireproof check valve with the inner and outer double fireproof functions, which can timely sense the indoor temperature change and the temperature change in the residential exhaust passage, thereby realizing the inner and outer double fireproof functions and having the advantages of simple structure and strong practicability.
In order to achieve the above-mentioned purpose, the invention provides a fireproof check valve with inner and outer dual fireproof functions, the fireproof check valve comprises a valve body, a valve clack which can be opened and closed and a fireproof executing device for locking the valve clack, the valve body is arranged outside an exhaust passage of a residence, and the fireproof executing device comprises a support, a rotating shaft, an elastic piece, a fireproof executing piece, an outer temperature sensing piece and an inner temperature sensing piece;
the support is arranged on the valve body and positioned on the back side of the valve clack;
the rotating shaft is arranged on the support;
the elastic piece is arranged on the support and positioned at the rotating shaft;
the fireproof executing piece is provided with a connecting part and an action part, and the connecting part of the fireproof executing piece is connected with the rotating shaft;
the valve body is provided with a through hole, the external temperature sensing piece is positioned at the outer side of the valve body and communicated with the indoor environment, the internal temperature sensing piece is positioned at the inner side of the valve body and communicated with the internal environment of the residential exhaust passage, the external temperature sensing piece and/or the internal temperature sensing piece pass through the through hole, the external temperature sensing piece is connected with the internal temperature sensing piece, and the internal temperature sensing piece is used for limiting the fireproof executing piece and simultaneously compressing the elastic piece;
when the internal and/or external temperature of the residential exhaust passage reaches a set value in a fire disaster, the limit failure of the internal temperature sensing piece to the fireproof executing piece is caused, and the acting part of the fireproof executing piece rotates around the rotating shaft by utilizing the elastic piece, so that the valve clack is locked in a closed state.
In the technical scheme of the invention, the temperature in the exhaust passage of the house and the indoor temperature are respectively sensed by adopting the inner temperature sensing piece and the outer temperature sensing piece which are connected with each other, and the two are in heat conduction connection, namely, the outer temperature sensing piece and the inner temperature sensing piece can be separated from each other no matter whether the temperature reaches a set value due to the fact that the temperature is generated at one position of the outer temperature sensing piece or the inner temperature sensing piece, so that the inner temperature sensing piece is invalid in limiting of the fireproof executing piece, and the fireproof executing piece executes fireproof action.
Furthermore, the fireproof executing device is arranged on the back side of the valve clack, does not occupy an exhaust channel, does not cause resistance to smoke exhaust and exhaust, and is convenient for improving the smoothness of exhaust; meanwhile, the outer temperature sensing piece is arranged on the outer side of the valve body and is communicated with the indoor environment, so that the indoor environment temperature is sensed in real time, and the problem that the traditional inner fireproof structure is arranged on the air inlet side of the valve clack to be wrapped by the exhaust branch pipe (for example, the structure of the prior patent 201921148868.0) is avoided, and the indoor environment temperature cannot be sensed directly.
Specifically, the external temperature sensing piece penetrates through the valve body and is bonded with the internal temperature sensing piece, and the bonding medium is temperature-control fusible metal. When fire disaster occurs outside (in a room) the exhaust passage, the outer temperature sensing piece is heated to melt the temperature control metal and is separated from the inner temperature sensing piece, and the fireproof executing piece generates fireproof action by utilizing the action of the elastic piece to promote the valve clack to be closed and locked in a closed state; when oil stains in the exhaust passage catch fire, the inner temperature sensing piece is heated to melt the temperature control metal and separate from the outer temperature sensing piece, and the elastic force of the elastic piece is utilized to drive the fireproof executing piece to act so as to drive the valve clack to be closed and locked in a closed state.
As another embodiment of the present invention, the back side of the valve flap is provided with a fitting portion, and the acting portion of the fire prevention actuator can abut against the fitting portion to thereby restrict the valve flap from being opened.
As another embodiment of the invention, the acting part at least comprises an abutting plate, the matching part at least comprises a stop plate, and the stop plate is provided with a stop edge for abutting matching, wherein the abutting plate can abut against the stop edge.
As another specific embodiment of the invention, the stop edge is arc-shaped, and a plurality of latches for abutting and matching with the abutting plate are arranged on the stop edge.
As another embodiment of the present invention, the abutment plate is provided with inclined surfaces for latch engagement to form ratchet teeth.
As another specific embodiment of the invention, the abutting plate is provided with a clamping groove, the clamping groove is provided with an opening, the bottom of the clamping groove is abutted against the stop edge, and the left side wall and the right side wall of the clamping groove are positioned at the two sides of the stop edge.
As another specific embodiment of the invention, the matching part is provided with two stop plates which are relatively fixed and respectively positioned at two sides of the vertical central line of the valve clack, the two stop plates are provided with two clamping grooves, and the two clamping grooves can be matched and abutted with the stop edges on the two stop plates, so that a multi-point support is formed.
As another specific embodiment of the invention, the action part is provided with a perforation, and the inner temperature sensing piece penetrates out of the perforation and is limited and connected with the action part through a connecting pin.
As another specific embodiment of the invention, the external temperature sensing piece comprises a temperature sensing connecting rod and a locking piece, wherein the locking piece locks the temperature sensing connecting rod at the through hole, and the temperature sensing connecting rod penetrates into the inner side of the valve body from the through hole and is connected with the internal temperature sensing piece.
As another embodiment of the present invention, the elastic member is a torsion spring.
The invention has the following beneficial effects:
the invention senses the temperature of the internal environment of the residential exhaust passage through the inner temperature sensing piece, senses the outside (indoor) of the residential exhaust passage through the outer temperature sensing piece, simultaneously detects the temperature of the inside and the outside of the residential exhaust passage through the heat conduction connection of the inner temperature sensing piece and the outer temperature sensing piece, limits the fireproof executing piece through the inner temperature sensing piece, and realizes the fireproof executing piece to generate fireproof action by utilizing the elastic piece once the fire disaster occurs and the inner temperature sensing piece and the outer temperature sensing piece are separated, so as to promote the valve clack to be closed and locked in a closed state.
The invention adopts the single fireproof executing piece to lock the valve clack, and the fireproof executing piece is limited by the external induction Wen Jian and the internal temperature sensing piece which are connected with each other, so that the indoor temperature change and the temperature change in the residential exhaust passage are sensed simultaneously, and the invention has the advantages of simple structure and strong practicability.
The invention has good matching stability between the action part on the fireproof executing part and the matching part on the back side of the valve clack, good supporting effect, avoids leakage in fire, cuts off the air flow passage between the exhaust passage and households, and prevents the fire from spreading.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view showing the structure of a fire-preventing check valve according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the closing posture of the valve clack of embodiment 1 of the present invention;
FIG. 3 is a schematic diagram I of the embodiment 1 of the present invention in which the valve flap is locked;
FIG. 4 is a second schematic illustration of the valve flap of example 1 of the present invention being locked;
fig. 5 is a schematic structural view of a fire protection performance device according to embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a fire prevention actuator according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of an inner temperature sensing member and an outer temperature sensing member according to embodiment 1 of the present invention;
fig. 8 is a schematic installation view of the fire protection check valve of embodiment 1 of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
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 described herein, and the scope of the invention is therefore not limited to the specific embodiments disclosed below.
Example 1
The invention provides a fireproof check valve with an inner fireproof function and an outer fireproof function, as shown in fig. 1-8, the fireproof check valve comprises a valve body 100, an openable valve clack 200 and a fireproof executing device 300 for locking the valve clack 200, wherein the valve body 100 is arranged on an exhaust passage and positioned outside the exhaust passage, the valve body 100 is used for providing an exhaust passage, the valve clack 200 is opened when the exhaust is completed, the valve clack 200 is closed when the exhaust is completed, and the fireproof executing device 300 locks the valve clack 200 at a closed position when a fire disaster occurs.
Wherein, the fire prevention performing device 300 includes a support 310, a rotation shaft 320, an elastic member 330, a fire prevention performing member 340, an external temperature sensing member 350, and an internal temperature sensing member 360;
the support 310 is disposed on the valve body 100 and is located on the back side of the valve clack 200, the rotating shaft 320 is disposed on the support 310 and is parallel to the valve shaft 201 on the valve clack 200, the elastic member 330 is disposed on the support 310 and is located at the rotating shaft 320, the elastic member 330 is preferably a torsion spring, the fireproof executing member 340 has a connecting portion 341 and an acting portion 342, and the connecting portion 341 of the fireproof executing member 340 is connected with the rotating shaft 320;
the valve body 100 is provided with a through hole 101, the external temperature sensing piece 350 is positioned at the outer side of the valve body 100 and communicated with the indoor environment, the internal temperature sensing piece 360 is positioned at the inner side of the valve body 100 and communicated with the indoor environment of the residential exhaust passage, the external temperature sensing piece 350 and/or the internal temperature sensing piece 360 pass through the through hole 101, the external temperature sensing piece 350 is connected with the internal temperature sensing piece 360, and the internal temperature sensing piece 360 is used for limiting the fireproof executing piece 340 and simultaneously compressing the elastic piece 330;
specifically, the acting portion 342 of the fireproof executing member 340 is provided with a through hole 343, and the inner temperature sensing member 360 penetrates out of the through hole 343 and is limited and connected (specifically, abutted) to the acting portion 342 by the connecting pin 370, so as to limit the acting portion 342 to rotate around the rotating shaft 320;
further, as shown in fig. 7, the external sensing member 350 includes a temperature sensing link 351 and a locking member 352, the locking member 352 locks the temperature sensing link 351 at the through hole 101, and the temperature sensing link 351 penetrates from the through hole 101 to the inside of the valve body 100 and is connected to the internal sensing member 360.
The inner temperature sensing piece 360 and the outer temperature sensing piece 350 are bonded together, the bonding medium is a temperature-controlled fusible metal 380, and the two are in heat conduction connection, namely, no matter the outer temperature sensing piece 350 or the inner temperature sensing piece 360 only needs to have a high temperature exceeding a set temperature, the outer temperature sensing piece 350 and the inner temperature sensing piece 360 can be separated, and the fireproof executing piece 340 is triggered to execute fireproof action.
When the temperature-controlled fusible metal 380 is applied to a kitchen, the melting point of the temperature-controlled fusible metal 380 is 150 ℃, and when the temperature-controlled fusible metal 380 is applied to a toilet, the melting point of the specific temperature-controlled fusible metal 380 can be selectively adjusted according to relevant regulations of different applications of the industry.
The external sensing member 350 and/or the internal sensing member 360 are separated from each other under the high temperature during a fire, and the fire prevention executing member 340 is rotated around the rotation shaft 320 by the elastic member 330, thereby abutting the acting portion 342 of the fire prevention executing member 340 against the valve flap 200.
A preferred abutment mating structure for effecting locking of the flap 200 in the closed position in this embodiment is shown in fig. 3-6.
The back surface side of the valve flap 200 is provided with a rocker arm 202 for rotational connection, the rocker arm 202 provides an engagement portion 203, and the acting portion 342 can abut against the engagement portion 203 to restrict the valve flap 200 from being opened.
The acting portion 342 includes an abutment plate 344, the matching portion 203 includes a stop plate 204, the stop plate 204 has a stop edge, which is specifically an arc-shaped stop edge, and the valve flap 200 is pressed in the closed position by the abutment relationship formed between the abutment plate 344 and the arc-shaped stop edge and cannot be opened, wherein a triangular support is formed among the abutment plate 344, the stop plate 204 and the support 310, so that the structural stability is good.
Further, the stop edge is provided with a plurality of latches 205, and the abutting plate 344 is provided with an inclined plane for the cooperation of the latches 205 to form ratchet teeth 345, as shown in fig. 3 and 6, the latches 205 and the ratchet teeth 345 form unidirectional sliding cooperation, and even in case of fire, the supporting relationship between the two can still be kept without failure, so that the sealing of the valve clack 200 is realized.
In order to further improve stability and ensure sealing at the valve clack 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 stop edge, and the left and right side walls of the clamping groove 346 are located at two sides of the stop edge to form left and right limiting.
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 clack 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 stop edges on the two stop plates 204, so that a multi-point support is formed.
The valve body 100 in this embodiment is installed outside the residential exhaust duct 400, as shown in fig. 8, the external temperature sensing member 350 is installed penetrating the valve body 100, and a part of it is exposed outside the valve body 100 and is not shielded by the exhaust branch pipe 500 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 air exhaust pipe extends into the valve body 100 to be connected with the inner temperature sensing piece 360, and the temperature change in the air exhaust pipe can be timely sensed through the inner temperature sensing piece 360 in case of fire, so that the temperature in the interior and the temperature outside the residential exhaust pipe 400 can be simultaneously detected, and finally the bidirectional fireproof requirement can be realized.
In other examples of the present invention, the external temperature sensing member 350 may be further connected and fixed to the valve body 100 by riveting, welding or bolting.
In order to facilitate smoke discharge and exhaustion, the valve body 100 in this embodiment is a flow guiding valve body, which has a top wall plate 102 inclined upwards along the exhaust direction, so that the smoke entering the valve body 100 is rapidly exhausted into the interior of the residential exhaust passage 400, and the corresponding air inlet pipe 103 arranged on the valve body 100 also has the same inclined direction as the top wall plate 102, so as to provide an inclined upward air inlet direction, which is beneficial to the rapid entry and upward exhaust of the gas into the residential exhaust passage 400, as shown in fig. 8; of course, other valve body structures capable of realizing normal smoke exhaust and exhaust can be adopted.
While the invention has been described in terms of preferred embodiments, it is not intended to limit the scope of the invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (10)
1. The fireproof check valve with the internal and external double fireproof functions comprises a valve body, an openable valve clack and a fireproof executing device for locking the valve clack, and is characterized in that the valve body is arranged outside a residential exhaust passage, and the fireproof executing device comprises a support, a rotating shaft, an elastic piece, a fireproof executing piece, an external temperature sensing piece and an internal temperature sensing piece;
the support is arranged on the valve body and positioned on the back side of the valve clack;
the rotating shaft is arranged on the support;
the elastic piece is arranged on the support and is positioned at the rotating shaft;
the fireproof executing piece is provided with a connecting part and an action part, and the connecting part of the fireproof executing piece is connected with the rotating shaft;
the valve body is provided with a through hole, the external temperature sensing piece is positioned at the outer side of the valve body and is communicated with the indoor environment, the internal temperature sensing piece is positioned at the inner side of the valve body and is communicated with the internal environment of the residential exhaust passage, the external temperature sensing piece and/or the internal temperature sensing piece pass through the through hole, the external temperature sensing piece Wen Jian is connected with the internal temperature sensing piece, and the internal temperature sensing piece is used for limiting the fireproof executing piece and simultaneously compressing the elastic piece;
when the internal and/or external temperature of the residential exhaust passage reaches a set value in a fire disaster, the limit failure of the internal temperature sensing piece to the fireproof executing piece is caused, and the acting part of the fireproof executing piece rotates around the rotating shaft by utilizing the elastic piece, so that the valve clack is locked in a closed state.
2. The fire-proof check valve with both inner and outer fire-proof function according to claim 1, wherein the back side of the valve flap is provided with a mating portion, and the acting portion of the fire-proof actuator can abut against the mating portion to restrict the valve flap from being opened.
3. The fire protection check valve with internal and external double fire protection function according to claim 2, wherein the action part at least comprises an abutting plate, the matching part at least comprises a stop plate, the stop plate is provided with a stop edge for abutting matching, and the abutting plate can abut against the stop edge.
4. A fire-proof check valve with inner and outer double fire-proof function as claimed in claim 3, wherein the stop edge is arc-shaped and provided with a plurality of latches for abutting engagement with the abutting plate.
5. The fire protection check valve with dual internal and external fire protection function according to claim 4, wherein the abutment plate is provided with inclined surfaces for the engagement of the latch to form ratchet teeth.
6. A fire-proof check valve with inner and outer double fire-proof function as claimed in claim 3, wherein the abutting plate is provided with a clamping groove, the clamping groove is provided with an opening, the bottom of the clamping groove is abutted against the stop edge, and the left and right side walls of the clamping groove are positioned on two sides of the stop edge.
7. The fireproof check valve with the inner and outer fireproof functions according to claim 6, wherein the matching part is provided with two stop plates, the two stop plates are relatively fixed and are respectively positioned at two sides of the vertical center line of the valve clack, the abutting plate is provided with two clamping grooves, and the two clamping grooves can be matched and abutted with the stop edges on the two stop plates, so that a multi-point support is formed.
8. The fireproof check valve with the inner and outer fireproof functions according to claim 1, wherein the action part is provided with a perforation, and the inner temperature sensing element penetrates out of the perforation and is in limiting connection with the action part through a connecting pin.
9. The fireproof check valve with the inner and outer fireproof functions according to claim 1, wherein the outer temperature sensing piece comprises a temperature sensing connecting rod and a locking piece, the locking piece locks the temperature sensing connecting rod at the through hole, and the temperature sensing connecting rod penetrates into the inner side of the valve body from the through hole and is connected with the inner temperature sensing piece.
10. The fireproof check valve with the inner and outer fireproof functions according to claim 1, wherein the inner temperature sensing piece and the outer temperature sensing piece are bonded together by adopting temperature control fusible metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236398.5A CN113864499B (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with inner and outer fireproof functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236398.5A CN113864499B (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with inner and outer fireproof functions |
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| Publication Number | Publication Date |
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| CN113864499A CN113864499A (en) | 2021-12-31 |
| CN113864499B true CN113864499B (en) | 2024-03-15 |
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| CN202111236398.5A Active CN113864499B (en) | 2021-10-22 | 2021-10-22 | Fireproof check valve with inner and outer fireproof functions |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN113864491A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Valve clack opening and closing device and method for fireproof check valve |
| 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 |
| CN216479096U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | A high seal valve clack structure for fire prevention check valve |
| CN216479098U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
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| CN216479099U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | Unobstructed fire prevention check valve admits air |
| CN216479145U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | High-stability fireproof actuating mechanism |
| CN216479144U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with internal and external double fireproof functions |
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| CN216479099U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | Unobstructed fire prevention check valve admits air |
| CN216479145U (en) * | 2021-10-22 | 2022-05-10 | 广州市彩蝶节能技术有限公司 | High-stability fireproof actuating mechanism |
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