CN209840359U

CN209840359U - Smoke prevention and exhaust device

Info

Publication number: CN209840359U
Application number: CN201920065747.3U
Authority: CN
Inventors: 张琪; 吴建美; 王洪波
Original assignee: Zhejiang Aijian Mechanical And Electrical Engineering Co Ltd
Current assignee: Zhejiang Aijian Mechanical And Electrical Engineering Co Ltd
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2019-12-24
Anticipated expiration: 2029-01-15

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to an anti-smoke device, which comprises a fan, wherein the fan is communicated with the indoor space and the outdoor space through a pipeline, a hollow base is arranged on the pipeline, a rubber ball is placed in the hollow base, fluid with the characteristics of expansion with heat and contraction with cold is filled in the rubber ball, a baffle which is butted with the rubber ball and used for preventing the rubber ball from expanding is hinged in the hollow base, a buckle plate extends out of the hollow base from the baffle, the end part of the buckle plate is provided with a clamping hook, and an elastic part which ensures that the buckle plate and the hollow base are relatively fixed is connected between the buckle; the pipeline opening is hinged with a rain cover, a cover opening is formed in the rain cover, and a clamping rod which is buckled into the clamping hook along with the rotation of the rain cover and enables the rain cover to seal the pipeline opening is arranged on the rain cover. The utility model discloses a smoke exhaust preventing device can be favorable to improving the installation effectiveness on can installing the return line fast with rain-proof cover after the conflagration is discharged fume, also is favorable to resources are saved simultaneously.

Description

Smoke prevention and exhaust device

Technical Field

The utility model belongs to the technical field of the technique of fire-fighting equipment and specifically relates to a smoke prevention and exhaust device is related to.

Background

The smoke preventing and exhausting system is one of building ventilating systems and has the main function of exhausting smoke in a building so as to improve the view field in the building, expel the smoke and facilitate fire extinguishing. That is, the smoke and smoke prevention system of a building can be counted as a fire protection auxiliary facility of the building, which plays a very important role in the safety of the building.

The automatic upset fire control of current publication number CN206608967U arranges cigarette cap, including body, rain-proof cover and switching device, air inlet and gas outlet have been seted up on the body, the gas outlet intercommunication of rain-proof cover and body, be equipped with the gas vent of opening down on the rain-proof cover, the bottom and the body of rain-proof cover are articulated, switching device is including being fixed in the pedestal on the body, being located fixture block, the hot response glass ball of pedestal top and being fixed in the connecting rod on the rain-proof cover, the body inner wall is equipped with places the blind hole, the connecting rod is located the pedestal top, is equipped with on the connecting rod and places the blind hole that corresponds from top to bottom of blind hole, the fixture block passes the through-hole of connecting rod and imbeds and places in the blind hole, hot response.

The above prior art solutions have the following drawbacks: rain-proof cover in the contrast-file need operating personnel with a new thermoinduction glass ball with rain-proof cover reinstallation back on the body after leaving the body, and the installation is more complicated, is unfavorable for improving the installation effectiveness.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a smoke exhaust preventing device, after the conflagration is discharged fume, can be favorable to improving the installation effectiveness with rain-proof cover quick installation return pipe, also be favorable to resources are saved simultaneously.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a smoke prevention and exhaust device comprises a fan arranged outdoors, wherein the fan is communicated with the indoor and the outdoor through a pipeline, a hollow base is arranged on the pipeline, a rubber ball is placed in the hollow base, fluid with the characteristics of expansion with heat and contraction with cold is contained in the rubber ball, a baffle which is abutted against the rubber ball and used for preventing the rubber ball from expanding is hinged in the hollow base, a pinch plate extends out of the hollow base from the baffle, a hook is arranged at the end part of the pinch plate, and an elastic part which enables the pinch plate and the hollow base to be relatively fixed is connected between the pinch plate and the hollow base; the opening of the pipeline is hinged with a rain cover, a cover opening facing the ground is arranged on the rain cover, and a clamping rod which is rotated along with the rain cover to be buckled into the clamping hook and enables the rain cover to seal the opening of the pipeline is arranged on the rain cover.

By adopting the technical scheme, the pipeline can be used as a ventilation pipeline in a non-fire alarm state, and gas can be discharged outdoors through the cover opening of the rain cover because the ventilation quantity requirement is not high. When meetting the conflagration, the fan takes the high temperature flue gas out outdoor, and the temperature of general flue gas can exceed 100 degrees centigrade, and the fluid expands rapidly under the principle of expend with heat and contract with cold to prop open the rubber ball and make the rubber ball butt on the baffle, the rubber ball promotes the baffle and makes the baffle rotate around articulated department. At the moment, the buckle plate also rotates and is matched with the hollow base to compress the elastic piece, so that the clamping hook leaves the clamping rod of the rain cover. After the rain cover loses the pulling force, the rain cover is driven by the dead weight and wind power to turn downwards and separate from the opening of the pipeline, so that the opening of the pipeline is completely opened, the air outlet resistance can be reduced, and the emission efficiency of smoke is increased. After the end of discharging fume, the fluid resumes normal volume, only need to make rain-proof cover rotate towards the pipeline opening this moment to make the kelly detain in the trip again can. The arrangement is beneficial to improving the installation efficiency and saving resources. Set up articulated rain-proof cover at the pipeline opening part to and set up the cover mouth towards ground on rain-proof cover, be favorable to preventing that the rainwater from getting into inside the pipeline and causing the damage to the fan.

The utility model discloses further set up to: and a filter screen is arranged on the cover opening.

Through adopting above-mentioned technical scheme, be favorable to blockking animals such as insect or mouse and get into the pipeline from the cover mouth, effectively improved the stability of fan operation.

The utility model discloses further set up to: the fluid is mercury.

Through adopting above-mentioned technical scheme, mercury has good expend with heat and contract with cold characteristic, can respond fast after being heated, makes the rubber ball expand fast and push away the baffle to make rain-proof cover can fall down fast.

The utility model discloses further set up to: the hollow base is provided with a notch communicated with the inner part of the pipeline and the inner cavity of the hollow base at one side back to the opening of the pipeline.

Through adopting above-mentioned technical scheme for the rubber ball that is in hollow base inner chamber can contact the heat of flue gas sooner, is favorable to improving the response speed of rubber ball.

The utility model discloses further set up to: the opening of the notch is provided with a bell mouth facing the fan.

By adopting the technical scheme, the heat of the flue gas entering the inner cavity of the hollow base is increased, and the expansion with heat and contraction with cold of the fluid are increased.

The utility model discloses further set up to: and a dustproof net is embedded on the bell mouth.

Through adopting above-mentioned technical scheme, be favorable to reducing the smoke and dust in the flue gas and get into in the hollow base inner chamber and block up the possibility of hollow base inner chamber, be favorable to improving the response precision of rubber ball.

The utility model discloses further set up to: the end part of the clamping hook is provided with a cambered surface.

By adopting the technical scheme, the clamping hook and the clamping rod are beneficial to reducing the touch friction damage between the clamping hook and the clamping rod, and the service lives of the clamping hook and the clamping rod are effectively prolonged.

The utility model discloses further set up to: the outside of the clamping rod is covered with a rubber layer.

Through adopting above-mentioned technical scheme, be favorable to forming further guard action to the kelly, utilize the high characteristic of rubber coefficient of friction simultaneously, increased the frictional force between kelly and the trip to it is more firm to make between rain-proof cover and the pipeline opening fix.

To sum up, the utility model discloses a beneficial technological effect does:

1. through set up articulated rain-proof cover at the pipeline opening part to and set up the cover mouth towards ground on rain-proof cover, be favorable to preventing that the rainwater from getting into inside the pipeline and causing the damage to the fan. The rain-proof cap can fall automatically in the smoke discharging process, the air displacement is increased, the air outlet resistance is reduced, and the smoke discharging efficiency is improved. After the smoke is discharged, the rain cover can be quickly installed on the opening of the return pipeline, so that the installation efficiency of the rain cover is improved, and meanwhile, the resource is saved.

2. Through at cover mouthful installation filter screen, be favorable to blockking animals such as insect or mouse from cover mouthful entering pipeline, effectively improved the stability of fan operation.

3. Through set up the dust screen on the horn mouth, be favorable to reducing the smoke and dust in the flue gas and get into in the hollow base inner chamber and block up the possibility of hollow base inner chamber, be favorable to improving the response precision of rubber ball.

Drawings

Fig. 1 is a schematic view of the whole structure of the smoke exhaust preventing device of the present invention.

Fig. 2 is a schematic view of the internal structure of the middle pipe of the present invention.

In the figure, 1, a pipeline; 11. a hollow base; 111. a rubber ball; 112. a notch; 113. a bell mouth; 114. a dust screen; 12. a baffle plate; 13. buckling the plate; 131. a torsion spring; 14. a hook is clamped; 141. a cambered surface; 15. a fan;

2. a rain cover; 21. covering the opening; 22. a filter screen; 23. and (5) clamping the rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a smoke exhaust preventing device, including setting up fan 15 outdoors, fan 15 communicates indoor and outdoor through pipeline 1. In this embodiment, it has rain-proof cover 2 that is the hemisphere to articulate at pipeline 1 opening part, and the axis of rotation of rain-proof cover 2 is perpendicular to the extending direction of pipeline 1 and can be for pipeline 1 turn over down.

Referring to fig. 1 and 2, a cover opening 21 facing the ground is formed in the rain cover 2. In the present embodiment, the filter net 22 is attached to the hood opening 21.

Referring to fig. 1 and 2, a hollow base 11 is fixed to an inner side wall of the duct 1. In the present embodiment, the hollow base 11 extends in a direction parallel to the axis of the pipe 1. A rubber ball 111 is placed in the hollow base 11, and mercury is contained in the rubber ball 111.

Referring to fig. 1 and 2, a notch 112 communicating the interior of the pipeline 1 and the inner cavity of the hollow base 11 is formed in one side of the hollow base 11, which is away from the rain cover 2. In this embodiment, a bell mouth 113 having an opening facing away from the rain cover 2 is attached to the notch 112, and a dust screen 114 is fitted to the bell mouth 113.

Referring to fig. 1 and 2, a baffle 12 abutting against the rubber ball 111 is hinged to the hollow base 11. In the present embodiment, the baffle 12 is located on the side of the rubber ball 111 facing away from the bell 113.

Referring to fig. 1 and 2, the baffle 12 extends out of the hollow base 11 and is provided with a buckle 13, and a hook 14 facing the opening direction of the pipeline 1 is arranged at the end of the buckle 13. In the present embodiment, an arc surface 141 is provided at an end of the hook 14.

Referring to fig. 1 and 2, an elastic member for keeping the pinch plate 13 and the hollow base 11 relatively fixed is connected between the pinch plate 13 and the hollow base 11. In this embodiment, the elastic member may be a torsion spring 131 installed at the hinge of the baffle 12, an axis of the torsion spring 131 is perpendicular to the extending direction of the hollow base 11, and two ends of the torsion spring 131 abut against the buckle 13 and the hollow base 11, respectively.

Referring to fig. 1 and 2, a clamping rod 23 which is buckled into the clamping hook 14 along with the rotation of the rain cover 2 and enables the rain cover 2 to be relatively fixed with the opening of the pipeline 1 is arranged on the inner wall of the rain cover 2. In this embodiment, the latch rod 23 is covered with a rubber layer.

The working principle of the embodiment is as follows: under the non-fire alarm state, the pipeline 1 can be used as the ventilation pipeline 1, and because the ventilation quantity requirement is not high, the gas can be discharged to the outdoor through the cover opening 21 of the rain cover 2. When a fire disaster occurs, the fan 15 draws high-temperature smoke out of the room, the temperature of the general smoke exceeds 100 ℃, and mercury expands rapidly under the principle of expansion with heat and contraction with cold, so that the rubber ball 111 is spread and abuts against the baffle plate 12, and the rubber ball 111 pushes the baffle plate 12 and enables the baffle plate 12 to rotate around the hinged part. At this time, the buckle 13 also rotates and cooperates with the hollow base 11 to compress the torsion spring 131, thereby causing the hook 14 to leave the catch bar 23 of the rain cover 2. After the pulling force of the rain cover 2 is lost, the rain cover is driven by the dead weight and the wind power to turn downwards and separate from the opening of the pipeline 1, so that the opening of the pipeline 1 is completely opened. When the end of discharging fume, mercury resumes normal volume, only need to make rain-proof cover 2 rotate towards pipeline 1 opening this moment to make in trip 23 detains the trip 14 again can.

This embodiment is through setting up articulated rain-proof cover 2 at 1 opening part of pipeline to and set up the cover mouth 21 towards ground on rain-proof cover 2, be favorable to preventing that the rainwater from getting into 1 inside and causing the damage to fan 15 of pipeline. The rain-proof cap can fall automatically in the smoke discharging process, the air displacement is increased, the air outlet resistance is reduced, and the smoke discharging efficiency is improved. After discharging fume, rain-proof cover 2 can be installed fast back on 1 openings of pipeline, is favorable to improving rain-proof cover 2's installation effectiveness, also is favorable to resources are saved simultaneously.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a prevent fume extractor, is including setting up fan (15) in the open air, and fan (15) are indoor and outdoor through pipeline (1) intercommunication, its characterized in that: the pipeline (1) is provided with a hollow base (11), a rubber ball (111) is placed in the hollow base (11), fluid with the characteristics of expansion with heat and contraction with cold is contained in the rubber ball (111), a baffle (12) which is abutted against the rubber ball (111) and used for preventing the rubber ball (111) from expanding is further hinged in the hollow base (11), a buckle plate (13) extends out of the baffle (12) towards the hollow base (11), a clamping hook (14) is arranged at the end part of the buckle plate (13), and an elastic part which enables the buckle plate (13) and the hollow base (11) to be relatively fixed is connected between the buckle plate (13) and the hollow base (11);

the opening of the pipeline (1) is hinged with a rain cover (2), a cover opening (21) facing the ground is formed in the rain cover (2), and a clamping rod (23) which is rotated along with the rain cover (2) to be buckled into the clamping hook (14) and enables the rain cover (2) to seal the opening of the pipeline (1) is arranged on the rain cover (2).

2. A smoke evacuation prevention device as claimed in claim 1 wherein: a filter screen (22) is arranged on the cover opening (21).

3. A smoke evacuation prevention device as claimed in claim 2 wherein: the fluid is mercury.

4. A smoke evacuation prevention device as claimed in claim 1 wherein: the hollow base (11) is provided with a notch (112) which is communicated with the inside of the pipeline (1) and the inner cavity of the hollow base (11) at one side back to the opening of the pipeline (1).

5. A smoke exhaust prevention device according to claim 4 wherein: a bell mouth (113) with an opening facing the fan (15) is mounted on the notch (112).

6. A smoke exhaust prevention device according to claim 5 wherein: the bell mouth (113) is embedded with a dust screen (114).

7. A smoke evacuation prevention device as claimed in claim 1 wherein: an arc surface (141) is arranged at the end part of the clamping hook (14).

8. A smoke evacuation prevention device as claimed in claim 7 wherein: the outside of the clamping rod (23) is covered with a rubber layer.