CN112032385A

CN112032385A - Automatic closing alarm device of smoke exhaust fireproof valve

Info

Publication number: CN112032385A
Application number: CN202010503938.0A
Authority: CN
Inventors: 吴小兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-04

Abstract

The invention relates to the technical field of fire safety, and discloses an automatic closing alarm device of a smoke exhaust fire damper, which comprises a valve body, wherein an inner cavity above the valve body is movably connected with a driving wheel I, the inner cavity of the driving wheel I is in transmission connection with a driving chain I, one side of the lower surface of the inner cavity of the valve body is fixedly connected with a limiting block, the middle part of the inner cavity of the valve body is fixedly connected with a rotating rod, and the outer surface of the rotating rod is movably connected with a rotating plate. According to the smoke exhaust fire-proof valve, the automatic closing device is additionally arranged, so that when a fire disaster occurs, the hot melting rod is fused after smoke in the smoke exhaust pipeline reaches a certain temperature, the smoke can push the first blade and the second blade to rotate, the rotating plate of the smoke exhaust fire-proof valve rotates through the matching of the driving wheel and the driving chain, the smoke exhaust fire-proof valve is closed, the problem that the traditional smoke exhaust fire-proof valve can be closed only by connecting a power supply is solved, the smoke exhaust fire-proof valve can be closed timely when the fire disaster occurs, and the spread of the fire disaster is avoided.

Description

Automatic closing alarm device of smoke exhaust fireproof valve

Technical Field

The invention relates to the technical field of fire safety, in particular to an automatic closing alarm device of a smoke exhaust fire damper.

Background

The smoke exhaust fire damper is a fire-fighting component, is usually installed on a smoke exhaust pipeline of some mechanical smoke exhaust systems, is commonly used for fire prevention in daily life, and is generally divided into a normally open type smoke exhaust fire damper, a normally closed type smoke exhaust fire damper, a remote control type smoke exhaust fire damper, an automatic reset type smoke exhaust fire damper and the like, and the smoke exhaust fire damper is also divided into two types of 70 ℃ and 280 ℃ according to fusing metal.

The normally open type smoke exhaust fire damper is in an open state at ordinary times, smoke in a room can be exhausted normally through a pipeline, when a fire disaster happens, the smoke exhaust fire damper is used for normally exhausting smoke in the room, when the temperature of the smoke reaches the fusing temperature of the fusing metal, the fusing metal is automatically disconnected, the controller is used for controlling the valve to be automatically closed, the smoke exhaust pipeline is closed, and the fire disaster is prevented from spreading from the smoke exhaust pipeline, however, the traditional normally open type smoke exhaust fire damper only can play a role in smoke exhaust fire prevention, and the smoke exhaust fire damper is usually closed by switching in a power supply or installing a 24V DC power supply, but an indoor circuit is often burnt out due to the fire disaster, the situation that power cannot be supplied to the smoke exhaust fire damper occurs, or the situation that power is insufficient when the fire disaster happens due to the fact that the smoke exhaust fire damper is not started for a long time, so that the smoke exhaust fire, the normal use of the smoke exhaust fire damper is influenced.

Disclosure of Invention

Aiming at the defects of the existing smoke exhaust fire damper in the use process in the background technology, the invention provides an automatic closing alarm device of the smoke exhaust fire damper, which has the advantages of automatic closing and pressure relief alarm and solves the problems in the background technology.

The invention provides the following technical scheme: an automatic closing alarm device of a smoke-discharging fire-proof valve comprises a valve body, wherein an inner cavity above the valve body is movably connected with a driving wheel I, the inner cavity of the driving wheel I is in transmission connection with a transmission chain I, one side of the lower surface of the inner cavity of the valve body is fixedly connected with a limiting block, the middle part of the inner cavity of the valve body is fixedly connected with a rotating rod, the outer surface of the rotating rod is movably connected with a rotating plate, one end of the rotating plate is fixedly connected with a middle shaft of the driving wheel I, a square groove is formed in the middle part of one side of the rotating plate, the outer surface of the rotating rod is positioned at the square groove and is in a gear shape, the middle part of one side of the rotating plate is fixedly connected with a fixed block, one end of the outer surface of the fixed block is movably connected with a rotating block, one side of the rotating block, one side of the rotating block is in transmission connection with a transmission chain II located between the first blade and the second blade, one side of the transmission chain II is in transmission connection with a transmission wheel II, one side of the rotating wheel II is meshed with a transmission gear, one end of the transmission gear is fixedly connected with a middle shaft of the rotating plate, and the transmission gear is meshed with a gear of the rotating rod.

Preferably, the opposite side fixedly connected with seal box of rotor plate, the movable block has been cup jointed in the inner chamber activity of seal box, one side fixedly connected with spring of movable block, the other end fixed connection of spring is in one side of rotor plate, the movable rod has been cup jointed in the inner chamber activity of movable block, and the quantity of spring is three, and is located the upper and lower both ends of movable block one side and the one end of movable rod respectively, one side fixedly connected with fixture block at movable rod surface middle part, the pressure release mouth that is located the movable block middle part is seted up to the one end of movable rod, the gas outlet has been seted up to the other end of movable rod, the movable rod is a cavity section of thick bamboo, and wherein the both ends of cavity communicate pressure release mouth and gas outlet respectively, the side fixedly connected with of fixed block is located the.

Preferably, the first blade is Y-shaped, and one side of the first blade is positioned right above the alarm hole I.

Preferably, the side of one end of the fixing block is provided with an alarm hole II located on one side of the alarm hole I, and the inner cavity of the alarm hole II is fixedly connected with a vibrating reed.

Preferably, the opening diameter of the alarm hole I is larger than that of the alarm hole II.

The invention has the following beneficial effects:

1. according to the smoke exhaust fire-proof valve, the automatic closing device is additionally arranged, so that when a fire disaster occurs, the hot melting rod is fused after smoke in the smoke exhaust pipeline reaches a certain temperature, the smoke can push the first blade and the second blade to rotate, the rotating plate of the smoke exhaust fire-proof valve rotates through the matching of the driving wheel and the driving chain, the smoke exhaust fire-proof valve is closed, the problem that the traditional smoke exhaust fire-proof valve can be closed only by connecting a power supply is solved, the smoke exhaust fire-proof valve can be closed timely when the fire disaster occurs, and the spread of the fire disaster is avoided.

2. The invention has the advantages that through the additional arrangement of the pressure relief mechanism, when a fire disaster occurs and the smoke exhaust fire damper is automatically closed, the indoor air pressure is continuously increased due to the fire disaster combustion, when the indoor instantaneous pressure boost is overlarge due to the indoor explosion and the like, the movable block is pushed to move by the air pressure so as to open the pressure relief opening, the indoor pressure relief is preliminarily carried out through the cooperation of the pressure relief opening, the hollow cavity of the movable rod and the air outlet, the situation that the indoor door and window are continuously damaged by the overlarge air pressure force to cause the fire spreading is avoided, and after the indoor air pressure is continuously increased, the movable block drives the movable rod to synchronously move so as to seal the air outlet, the pressure relief to the indoor is finished, and the fire spreading caused by the continuous pressure relief is avoided.

3. According to the invention, through the Y-shaped design of the first blade and the position at one side of the air outlet, when the smoke exhaust fire-proof valve relieves pressure indoors, the first blade can be impacted by high-speed airflow flowing out of the air outlet, the rotating block is rotated, the tightness of the rotating plate is improved through the matching of the driving wheel and the driving chain, and the rotating plate is arranged to be eccentrically arranged, so that after the rotating plate rotates, the air pressure borne by one end of one side of the rotating plate is greater than the air pressure borne by the other end of the rotating plate, the rotating plate is continuously closed tightly, and the situation that the smoke exhaust fire-proof valve cannot effectively prevent fire due to the rotation of the rotating plate caused by the impact of the high-speed airflow is avoided.

4. According to the invention, the alarm hole I and the alarm hole II with different opening diameters are additionally arranged, so that when the indoor pressure is increased to a certain degree, high-speed airflow generated by pressure relief through the air outlet of the pressure relief mechanism impacts the alarm hole I to generate sharp sound to play a first-order alarm effect, and when the indoor pressure is overlarge, the pressure relief device is closed again, the indoor high-speed airflow only flows out of the alarm hole II and touches the vibrating plate to generate more sharp sound to play a second-order alarm effect.

Drawings

FIG. 1 is a perspective view of a smoke evacuation stage of the present invention;

FIG. 2 is a perspective view of the fire protection stage of the present invention;

FIG. 3 is a schematic diagram of a normal cross-sectional view of a pressure relief device according to the present invention;

FIG. 4 is a schematic cross-sectional view of a pressure relief device according to the present invention;

FIG. 5 is a cross-sectional view of a structural rotor plate of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 7 is an enlarged view of the structure at B in FIG. 3 according to the present invention.

In the figure: 1. a valve body; 2. a driving wheel I; 3. a transmission chain I; 4. a limiting block; 5. rotating the rod; 6. A rotating plate; 7. a sealing box; 8. a movable block; 9. a spring; 10. a movable rod; 11. a pressure relief port; 12. An air outlet; 13. a fixed block; 14. an alarm hole I; 15. a hot melt rod; 16. rotating the block; 17. a first blade; 18. an alarm hole II; 19. a second blade; 20. a transmission chain II; 21. a driving wheel II; 22. A transmission gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an automatic closing alarm device of a smoke exhaust fire damper comprises a valve body 1, an inner cavity above the valve body 1 is movably connected with a driving wheel i 2, the inner cavity of the driving wheel i 2 is connected with a driving chain i 3, one side of the lower surface of the inner cavity of the valve body 1 is fixedly connected with a limiting block 4, the middle part of the inner cavity of the valve body 1 is fixedly connected with a rotating rod 5, the outer surface of the rotating rod 5 is movably connected with a rotating plate 6, the limiting block 4 enables the smoke exhaust fire damper to keep the rotating plate 6 and the valve body 1 in a vertical state in a smoke exhaust state, one end of the rotating plate 6 is fixedly connected with a central shaft of the driving wheel i 2, the middle part of one side of the rotating plate 6 is provided with a square groove, the outer surface of the rotating rod 5 is in a gear shape, the middle part of one side of the rotating plate 6, the other side of the rotating block 16 is movably connected with a second blade 19, one side of the outer surface of the fixed block 13 is movably connected with a hot melting rod 15 positioned on one side of the first blade 17, one side of the rotating block 16 is in transmission connection with a transmission chain II 20 positioned between the first blade 17 and the second blade 19, one side of the transmission chain II 20 is in transmission connection with a transmission wheel II 21, one side of the rotating wheel II 21 is meshed with a transmission gear 22, one end of the transmission gear 22 is fixedly connected with the middle shaft of the rotating plate 6, and the transmission gear 22 is meshed with a gear of the rotating rod 5, so that when a fire disaster occurs indoors and smoke is discharged through a smoke discharge pipeline, when the smoke temperature reaches the fusing temperature of the hot melting rod 15, the hot melting rod 15 is disconnected, smoke impacts the first blade 17 and the second blade 19 to rotate the rotating block 16, and rotates through the transmission wheel II 21 and the transmission chain II 20, and is meshed with a conical gear on one side of, the transmission gear 22 is transversely rotated, and the rotating plate 6 is rotated under the reaction force of the transmission gear 22 through the gear-shaped meshing between the transmission gear 22 and the middle part of the rotating rod 5, so that the smoke exhaust fire damper is automatically closed.

In order to enable the rotating plate 6 to be stably closed under the condition of being closed under the influence of air flow, the rotating rod 5 and the rotating plate 6 are installed in a relatively eccentric mode, namely the rotating rod 5 is installed in an off-axis mode relative to the vertical center axis of the rotating plate 6, so that the area of a wind receiving surface for pushing the rotating plate 6 to be closed is larger than the area of a wind receiving surface for blocking the rotating plate 6 to be closed in the closed state of the rotating plate 6.

Wherein, the other side of the rotating plate 6 is fixedly connected with a seal box 7, an inner cavity of the seal box 7 is movably sleeved with a movable block 8, one side of the movable block 8 is fixedly connected with a spring 9, the other end of the spring 9 is fixedly connected with one side of the rotating plate 6, an inner cavity of the movable block 8 is movably sleeved with a movable rod 10, the number of the springs 9 is three, the springs 9 are respectively positioned at the upper end and the lower end of one side of the movable block 8 and one end of the movable rod 10, one side of the middle part of the outer surface of the movable rod 10 is fixedly connected with a clamping block, one end of the movable rod 10 is provided with a pressure relief opening 11 positioned at the middle part of the movable block 8, the other end of the movable rod 10 is provided with an air outlet 12, the movable rod 10 is a hollow cylinder, the two ends of the cavity are respectively communicated with the pressure relief opening 11 and the air outlet 12, the side of the fixed block, pressure release mouth 11 is opened completely, then 8 pressurized increases of movable block just drive movable rod 10 synchronous motion, make after the fire damper of discharging fume is in the encapsulated situation, when indoor instantaneous pressure increases, can remove through movable block 8, make pressure release mouth 11 open, make indoor air current flow through pressure release mouth 11, cavity and gas outlet 12 in the movable rod 10, make indoor pressure obtain preliminary pressure release, and when indoor pressure is too big, make movable block 8 drive movable rod 10 and remove, make gas outlet 12 seal, make pressure relief device seal once more, get into the fire prevention state.

Wherein, first blade 17 is "Y" font, and one side of first blade 17 is located alarm hole I14 directly over for behind the fire damper of discharging fume self-closing, when indoor atmospheric pressure is too big, make pressure relief device start-up back, high-speed air current flows through pressure release mouth 11, activity pole 10 cavity and gas outlet 12, and discharge from alarm hole I14, and make and blow out high-speed air current drive inclined blade rotation from alarm hole I14, improve the closeness of fire damper of discharging fume when the pressure release state.

Wherein, the side of fixed block 13 one end is seted up and is located warning hole II 18 of warning hole I14 one side, and the inner chamber fixedly connected with trembler of warning hole II 18 for when indoor pressure is too big, pressure relief device closes the pressure release after, the high velocity draught that flows into cavity in the movable rod 10 can only flow a small amount through warning hole II 18, and through high velocity draught impact trembler, make pressure relief device produce comparatively sharp-pointed sound, send the too big alarm of indoor pressure.

Wherein, the trompil diameter of warning hole I14 is greater than the trompil diameter of warning hole II 18 for after high-speed airstream flows into the movable rod 10 inner chamber from pressure release 11, flow out from warning hole I14 and follow the sound that warning hole II 18 flows out and send different, make the alarm sound through pressure relief device distinguish the atmospheric pressure state on the scene of a fire, make the fire fighter can carry appropriate fire prevention equipment according to the atmospheric pressure state on the scene of a fire.

The using method of the invention is as follows:

when the valve is automatically closed: the smoke discharging fire damper is arranged in a smoke discharging pipeline, the smoke discharging fire damper is normally kept in a normally open state at ordinary times, when a fire disaster happens, smoke is normally discharged from the smoke discharging pipeline, when the temperature of smoke in the smoke discharging pipeline reaches 70 ℃ or 280 ℃, the hot melting rod 15 is fused due to high temperature, the first blade 17 is not clamped by the hot melting rod 15, the smoke blows the first blade 17 and the second blade 19 when flowing through the smoke discharging pipeline, the rotating block 16 is started, the transmission wheel II 21 is rotated through the transmission of the transmission chain II 20, the transmission wheel II 21 is engaged with the conical gear on one side of the transmission gear 22 through the conical gear on one end of the transmission wheel II 21, the transmission gear 22 is transversely rotated and is engaged with the gear on the middle part of the rotating rod 5 through one side of the transmission gear 22, and after the transmission gear 22 is rotated, the rotating rod 5 is fixedly connected with the valve body 1, the rotating plate 6 reversely rotates, through the matching of a driving wheel I2 in an inner cavity above the valve body 1 and a driving chain I3, the two rotating plates 6 synchronously rotate to close the smoke exhaust fire damper and enter a fire prevention state;

when the pressure relief is given an alarm: after the smoke exhaust fire damper enters a fire-proof state, relatively large energy is generated due to indoor fire combustion, and when the energy cannot be released or explodes in a closed space, the indoor instantaneous air pressure is increased, the air pressure impacts the movable block 8, the movable block 8 moves to one side due to the fact that the pressure intensity in the seal box 7 is smaller than the pressure intensity on one side of a fire scene, the pressure relief opening 11 is opened, smoke flows into the hollow cavity of the movable rod 10 from the pressure relief opening 11 and is blown out from the air outlet 12, temporary pressure relief is achieved, air flow flows through the alarm hole I14, a sharp sound is generated due to the fact that the flow speed of the smoke is high, a first-order alarm effect is achieved, when the energy on the fire scene is increased too fast, the movable block 8 is impacted by the energy, the movable block 8 drives the movable rod 10 to move, the air outlet 12 on one side of the movable rod 10 moves, and after the smoke outlet 12 moves for, and after the air outlet 12 and the alarm hole I14 are completely staggered, the air outlet 12 is communicated with the alarm hole II 18, so that the smoke exhaust fire damper finishes pressure relief and enters a fire-proof state again, high-speed airflow flowing into the hollow cavity of the movable rod 10 flows out from the alarm hole II 18 in a small amount and impacts a vibrating plate to generate sharper sound, the effect of second-order alarm is achieved, and firefighters are reminded of overlarge indoor pressure.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic closing alarm device of fire damper of discharging fume, includes valve body (1), its characterized in that: the inner chamber swing joint of valve body (1) top has drive wheel I (2), the inner chamber transmission of drive wheel I (2) is connected with driving chain I (3), one side fixedly connected with stopper (4) of valve body (1) inner chamber lower surface, the middle part fixedly connected with dwang (5) of valve body (1) inner chamber, the surface swing joint of dwang (5) has rotor plate (6), the one end of rotor plate (6) and the axis fixed connection of drive wheel I (2), the square groove has been seted up at the middle part of rotor plate (6) one side, just the surface of dwang (5) is located square groove department and is the gear form, the middle part fixedly connected with fixed block (13) of rotor plate (6) one side, the one end swing joint of fixed block (13) surface has rotor block (16), one side fixedly connected with first blade (17) of rotor block (16), the opposite side swing joint of turning block (16) has second blade (19), one side swing joint of fixed block (13) surface has hot melt pole (15) that are located first blade (17) one side, one side transmission of turning block (16) is connected with and is located second (20) of drive chain between first blade (17) and second blade (19), one side transmission of drive chain II (20) is connected with drive wheel II (21), the meshing of one side of turning wheel II (21) has drive gear (22), the axis fixed connection of the one end of drive gear (22) and rotor plate (6), and the meshing of gear department of drive gear (22) and dwang (5).

2. The automatic closing alarm device of a smoke evacuation fire damper of claim 1, wherein: the other side of the rotating plate (6) is fixedly connected with a sealing box (7), the inner cavity of the sealing box (7) is movably sleeved with a movable block (8), one side of the movable block (8) is fixedly connected with a spring (9), the other end of the spring 9 is fixedly connected with one side of the rotating plate 6, a movable rod (10) is movably sleeved with the inner cavity of the movable block (8), the number of the springs (9) is three, the springs are respectively positioned at the upper end and the lower end of one side of the movable block (8) and one end of the movable rod (10), one side of the middle part of the outer surface of the movable rod (10) is fixedly connected with a fixture block, one end of the movable rod (10) is provided with a pressure relief opening (11) positioned in the middle part of the movable block (8), the other end of the movable rod (10) is provided with an air outlet (12), the movable rod (10) is a hollow cylinder, the two ends of the, and the side surface of the fixed block (13) is fixedly connected with an alarm hole I (14) positioned on one side of the air outlet (12).

3. The automatic closing alarm device of a smoke evacuation fire damper of claim 2, wherein: the shape of first blade (17) is "Y" font, and one side of first blade (17) is located the direct top of warning hole I (14).

4. The automatic closing alarm device of a smoke evacuation fire damper of claim 2, wherein: an alarm hole II (18) located on one side of the alarm hole I (14) is formed in the side face of one end of the fixing block (13), and a vibrating reed is fixedly connected to the inner cavity of the alarm hole II (18).

5. The automatic closing alarm device of a smoke evacuation fire damper of claim 4, wherein: the diameter of the opening of the alarm hole I (14) is larger than that of the opening of the alarm hole II (18).