CN216479145U

CN216479145U - High-stability fireproof actuating mechanism

Info

Publication number: CN216479145U
Application number: CN202122555029.4U
Authority: CN
Inventors: 聂法玉; 谭源生
Original assignee: GUANGZHOU CAIDIE ENERGY-SAVING TECHNOLOGY CO LTD
Current assignee: GUANGZHOU CAIDIE ENERGY-SAVING TECHNOLOGY CO LTD
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-05-10
Anticipated expiration: 2031-10-22

Abstract

The utility model provides a high-stability fireproof actuator for a fireproof check valve, which comprises a valve casing, a valve seat and a valve clack capable of opening and closing, wherein the valve clack is arranged on the valve casing and matched with the valve seat, the fireproof actuator is used for driving the valve clack to close and locking the valve clack in a closed state in case of fire, the valve casing is arranged on the outer side of a residential exhaust passage, the fireproof actuator comprises a support, a rotating shaft, a spring, a temperature sensing piece and an actuating piece, the support is arranged on the valve casing and positioned on the back side of the valve clack, the rotating shaft is arranged on the support, the spring is arranged on the support and positioned at the rotating shaft, the actuating piece is provided with a connecting part and an acting part, the connecting part of the actuating piece is hinged on the rotating shaft, the acting part is connected on the support or the valve casing in a limiting way through the temperature sensing piece and compresses the spring, thereby limiting the rotation of the actuating element, and the acting part is used for rotating around the rotating shaft after the temperature sensing element is separated and is abutted against the valve clack. The utility model has the advantages of strong structural stability and good supporting effect.

Description

High-stability fireproof actuating mechanism

Technical Field

The utility model belongs to the technical field of fireproof check valves, and particularly relates to a high-stability fireproof actuating mechanism for a fireproof check valve.

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 organically discharged upwards into the house exhaust duct and finally discharged from the roof, so that the high-altitude discharge is realized. The air curtain and the 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 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, chinese patent application No. cn200920212736.x discloses a side-opening fireproof check valve, which is installed and fixed on the 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 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 includes at least two fusing points.

For another example, chinese patent application 201821290666.5 discloses a locking structure and water conservancy diversion formula flue fire prevention check valve for fire prevention check valve, including setting up base and the elastic element in the valve body, be provided with movable connecting rod on the base, one side of base articulates there is the retaining member, elastic element is fixed in on the articulated shaft of retaining member and drive the retaining member with movable connecting rod offsets, the one end of retaining member articulates there is the connecting piece that can stretch out and link firmly from the valve body, the articulated shaft that is used for articulated connecting piece adopts low melting point alloy fuse.

However, in the prior art, the actuating member for locking the valve flap has poor supporting effect and weak impact resistance in case of fire, so that the phenomenon of smoke leakage and air leakage occurs at the valve flap.

Therefore, improvements are needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a high-stability fireproof execution mechanism which has the advantages of strong structural stability and good supporting effect.

In order to achieve the purpose, the utility model provides a high-stability fire-proof actuator which is used for a fire-proof check valve, the fire-proof check valve comprises a valve casing, a valve seat and a valve flap capable of opening and closing, the valve flap is arranged on the valve casing and matched with the valve seat, the fire-proof actuator is used for driving the valve flap to close and locking the valve flap in a closed state in case of fire, the valve casing is arranged on the outer side of a residential exhaust passage, and the fire-proof actuator comprises a support, a rotating shaft, a spring, a temperature sensing piece and an actuator;

the support is arranged on the valve shell and positioned on the back side of the valve clack;

the rotating shaft is arranged on the support;

the spring is arranged on the support and positioned at the rotating shaft;

the executive component is provided with a connecting part and an acting part, the connecting part of the executive component is hinged to the rotating shaft, the executive component is connected to the support or the valve shell in a limiting mode through the temperature sensing component and compresses the spring, the temperature sensing component fails in limiting mode of the acting part in case of fire, and the acting part rotates around the rotating shaft and abuts against the valve clack through the spring.

In another embodiment of the present invention, the valve flap has an engaging portion on a back surface side thereof, and the acting portion is capable of abutting against the engaging portion to hold the valve flap in a closed state.

As another specific embodiment of the present invention, the action portion comprises at least one abutting plate, and the engagement portion comprises at least one stop plate having an edge thereon, wherein the abutting plate is capable of abutting against the edge.

As another specific embodiment of the utility model, the edge is provided with a latch section for abutting engagement with the abutment plate.

As another embodiment of the utility model, the edge is also provided with a smooth guide section.

As another embodiment of the utility model, the abutment plate is provided with a bevel for engagement of the ratchet segments to form a ratchet.

As another specific embodiment of the present invention, the abutting plate has a slot with an opening, the bottom of the slot abuts against the edge, and the left and right side walls of the slot are located on both sides of the edge.

As another specific embodiment of the utility model, the matching part is provided with two stop plates which are relatively fixed and are respectively positioned at two sides of the vertical central line of the valve clack, two clamping grooves are arranged on the butt plates, and the two clamping grooves can be matched and butted with the edges of the two stop plates, so that multi-point support is formed.

As another embodiment of the present invention, the spring is a torsion spring.

As another specific embodiment of the utility model, the support is a groove-shaped support which is provided with two opposite limiting plates, and the connecting part of the actuating element is positioned in the support and is contacted with the two limiting plates so as to form a limiting fit.

The utility model has the following beneficial effects:

the fireproof executing mechanism is arranged on the back side of the valve clack, so that the air resistance influence of the fireproof executing mechanism on the exhaust passage can be eliminated, meanwhile, the fireproof executing mechanism has high sensing speed in a fire disaster, can quickly drive the valve clack to be closed and lock the valve clack in a closed state, tightly presses the valve clack through the action part, avoids the phenomena of smoke leakage and air leakage, and has the advantages of strong structural stability and good supporting effect.

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 a fire-proof actuator according to embodiment 1 of the present invention in a normal state;

FIG. 3 is a first schematic view of the fire-protection actuator according to embodiment 1 of the present invention activated in a fire;

FIG. 4 is a second schematic view of the fire-protection actuator according to embodiment 1 of the present invention activated in a fire;

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 structural view of a temperature sensing member 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 present embodiment provides a high-stability fire prevention actuator 400 for a fire prevention check valve, as shown in fig. 1, the fire prevention check valve includes a valve housing 100, a valve seat 200, and a valve flap 300 that can be opened and closed, the valve flap 300 being disposed on the valve housing 100 and cooperating with the valve seat 200, the fire prevention actuator 400 being used to drive the valve flap 300 to close and lock the valve flap 300 in a closed state in case of fire.

As shown in fig. 2-6, the fire-proof actuator 400 includes a support 410, a shaft 420, a spring 430, a temperature sensing element 440 and an actuator 450;

the support 410 is arranged on the valve housing and positioned on the back side of the valve clack 300, the rotating shaft 420 is arranged on the support 410 and arranged in parallel with the valve shaft 301 on the valve clack 300, the spring 430 is arranged on the support 410 and positioned at the rotating shaft 420, preferably, the spring 430 is a torsion spring, the actuating member 450 is provided with a connecting part 451 and an acting part 452, and the connecting part 451 of the actuating member 450 is connected with the rotating shaft 420;

specifically, the action part 452 of the actuator 450 is provided with a through hole 453, the temperature sensing element 440 penetrates through the through hole 453 and forms a limit on the action part 452 through a connecting pin 460, so that the action part 452 is limited to rotate around the rotating shaft 420, and the action part 452 rotates around the rotating shaft 420 and abuts against the valve flap 300 after the temperature sensing element 440 is separated from the rotating shaft in case of fire.

In case of fire, the temperature sensing member 440 is broken (or fused) by high temperature, and the actuating member 450 rotates around the rotating shaft 420 by the spring 430, so that the acting portion 452 of the actuating member 450 is pressed against the valve flap 300.

Specifically, a rocker arm 302 for rotational connection is provided on the back side of the valve flap 300, the rocker arm 302 provides an engagement portion 303, and the action portion 452 can abut against the engagement portion 303 to restrict the valve flap 300 from being opened.

The action portion 452 comprises an abutting plate 454, the engagement portion 303 comprises a stop plate 304, the stop plate 304 has an edge, preferably an arc-shaped edge, and the valve flap 300 is pressed in the closed position by the abutting relation between the abutting plate 454 and the edge without being opened, wherein a triangular support is formed among the abutting plate 454, the stop plate 304 and the support 410, and the structural stability is good.

Further, a plurality of latch teeth are arranged on the edge to form the latch tooth section 305, the abutting plate 454 is provided with an inclined surface for matching with the latch teeth on the latch tooth section 305 to form the ratchet tooth 455, as shown in fig. 3 and 6, a one-way sliding fit is formed between the latch tooth and the ratchet tooth 455, the supporting relationship between the latch tooth and the ratchet tooth is kept and cannot be lost even under the fire condition, and therefore the sealing of the valve clack 300 is realized.

The smooth guiding section 306 is arranged on the edge of the valve clack 300, when the valve clack 300 exhausts and is in an open state to cause fire, the abutting plate 454 rotates, the smooth guiding section 306 can be used for quickly driving the valve clack 300 to close, and the latch section 305 is used for locking the valve clack 300 at a closing position, so that the valve clack 300 is smoother.

In order to further improve the stability and ensure the sealing of the valve flap 300, the abutting plate 454 in this embodiment is provided with a clamping groove 456, the clamping groove 456 has an opening, the bottom of the clamping groove 456 abuts against the edge, and the left and right side walls of the clamping groove 456 are located at the two sides of the edge to form left and right limiting.

Still further, the matching portion 303 is provided with two stop plates 304, the two stop plates 304 are relatively fixed and are respectively located at two sides of the vertical center line of the valve flap 300, as shown in fig. 1 and 3, the abutting plate 454 is provided with two clamping grooves 456, and the two clamping grooves 456 can be matched and abutted with edges of the two stop plates 304, so as to form a multi-point support.

The bracket 410 in this embodiment is a slot-type bracket 410, which has two opposite limiting plates 411, and the connecting part 451 of the actuating part 450 is located in the bracket 410 and contacts with the two limiting plates 411, so as to form a limiting fit.

The temperature sensing member 440 in this embodiment preferably can detect the ambient temperature inside and outside the residential exhaust duct 500 at the same time, as shown in fig. 7, for example, the temperature sensing member 440 includes an inner temperature sensing member 441 located inside the valve housing and an outer temperature sensing member 442 located outside the valve housing, the inner temperature sensing member 441 is used for sensing the temperature inside the residential exhaust duct 500, the outer temperature sensing member 442 is used for sensing the temperature outside the residential exhaust duct 500, the valve housing 100 is provided with a through hole 101, the inner temperature sensing member 441 and/or the outer temperature sensing member 442 can pass through the through hole 101, wherein the inner temperature sensing member 441 and the outer temperature sensing member 442 are connected, the inner temperature sensing member and/or the outer temperature sensing member are separated after being heated during a fire, and the fire protection actuator 400 is activated.

Specifically, the inner temperature sensing element 441 and the outer temperature sensing element 442 are bonded together by using the temperature-controlled fusible metal 443, wherein when the fire check valve of the present embodiment is applied to a kitchen, the melting point of the temperature-controlled fusible metal 443 is 150 ℃, and when the fire check valve is applied to a toilet, the melting point of the temperature-controlled fusible metal 443 is 70 ℃, and the melting point of the specific temperature-controlled fusible metal can be selectively adjusted according to regulations.

The valve casing 100 in this embodiment is installed outside the residential exhaust duct 500, as shown in fig. 8, the outer temperature sensing member 442 is installed by penetrating through the valve casing 100, and a part of the outer temperature sensing member 442 is exposed outside the valve casing 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 exhaust pipe extends into the valve casing 100 to be connected with the inner temperature sensing member 441, 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.

The valve housing 100 of the present embodiment is installed on the outside of the residential air duct 500, as shown in fig. 8, so that the fire-proof check valve of the present embodiment is completely disposed outside the residential air duct 500, unlike the conventional solution in which the valve housing 100 of the fire-proof check valve is installed in the residential air duct 500, in other examples of the present invention, the fire-proof actuator 400 provided in the present embodiment may be applied to the solution installed in the residential air duct 500 according to design requirements, and the present embodiment will not be described again.

In order to facilitate smoke evacuation and exhaust, the valve casing 100 in this embodiment is a flow guiding type valve casing having a top wall plate 102 inclined upward in the exhaust direction, so that smoke entering the valve casing 100 is rapidly exhausted to the interior of the residential exhaust duct 500, and the corresponding air inlet pipe 103 provided on the valve casing 100 also has the same inclination direction as the top wall plate 102 to provide an inclined upward air inlet direction, which facilitates the rapid entry and upward exhaust of gas into the residential exhaust duct 500, as shown in fig. 8; of course, other valve casing 100 structures capable of achieving normal exhaust and exhaustion 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

1. A high-stability fire-proof actuating mechanism is used for a fire-proof check valve, the fire-proof check valve comprises a valve casing, a valve seat and a valve flap capable of opening and closing, the valve flap is arranged on the valve casing and is matched with the valve seat, the fire-proof actuating mechanism is used for driving the valve flap to close and locking the valve flap in a closed state in case of fire, the high-stability fire-proof actuating mechanism is characterized in that the valve casing is arranged on the outer side of a residential exhaust passage, and the fire-proof actuating mechanism comprises a support, a rotating shaft, a spring, a temperature sensing piece and an actuating piece;

the rotating shaft is arranged on the support;

the spring is arranged on the support and positioned at the rotating shaft;

the executive component is provided with a connecting part and an acting part, the connecting part of the executive component is hinged to the rotating shaft, the executive component is connected to the support or the valve shell in a limiting mode through the temperature sensing component and compresses the spring, the temperature sensing component is opposite to the limiting failure of the acting part in a fire disaster, and the acting part surrounds the rotating shaft and abuts against the valve clack.

2. A high stability fire protection actuator as defined in claim 1, wherein said valve flap is provided on a back side thereof with an engaging portion, and said acting portion is capable of abutting against said engaging portion to thereby maintain said valve flap in a closed state.

3. A high stability fire-resistant actuator as claimed in claim 2, wherein said actuating portion includes at least one abutment plate, and said engagement portion includes at least one stop plate having an edge thereon, wherein said abutment plate is capable of abutting said edge.

4. A high stability fire protection actuator as defined in claim 3, wherein said rim is provided with a latch section for abutting engagement with said abutment plate.

5. A high stability fire protection actuator as defined in claim 4, wherein said edge is further provided with a smooth guide section.

6. A high stability fire-resistant actuator as claimed in claim 4, wherein said abutment plate is provided with a ramp for engagement of said ratchet segments to form a ratchet.

7. A high stability fire stop actuator as defined in claim 3, wherein said abutment plate has an open slot therein, a slot bottom of said slot abutting said rim, and left and right sidewalls of said slot being disposed on both sides of said rim.

8. A high stability fire protection actuator as claimed in claim 7, wherein said engaging portion has two said stop plates fixed to each other and located on two sides of a vertical center line of said valve flap, and said abutting plate is provided with two said engaging grooves, and said two engaging grooves can engage and abut with said edges of said two said stop plates to form a multi-point support.

9. The high stability fire actuator of claim 1, wherein the spring is a torsion spring.

10. A high stability fire prevention actuator as defined in claim 1 wherein said bracket is a channel bracket having two opposing retainer plates, and wherein said actuator connection portion is located within said bracket and contacts said two retainer plates to form a positive stop engagement.