CN213088850U

CN213088850U - Fireproof check valve for smoke exhaust pipeline

Info

Publication number: CN213088850U
Application number: CN202022047507.6U
Authority: CN
Inventors: 王攀; 刘晗
Original assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Current assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-04-30
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a fire prevention check valve is used to exhaust pipe, including installing the return bend main part on exhaust pipe, the one end that the return bend main part is located exhaust pipe is the gas vent, the return bend main part is located the outer one end of exhaust pipe and is the air inlet, the return bend main part is equipped with the check valve piece of discharging fume in, one section that the return bend main part is located exhaust pipe is vertical section, the intercommunication is provided with on the lateral wall of the vertical section of return bend main part and holds the chamber, it is provided with the shutoff board that is used for shutoff return bend main part to hold the intracavity slip, be provided with the pressure spring on the interior diapire wall that holds the chamber, the one end of pressure spring is connected with the interior diapire wall that holds the chamber, the other end is connected with the lateral wall of. This application has the effect that promotes flue check valve fire behavior.

Description

Fireproof check valve for smoke exhaust pipeline

Technical Field

The application relates to the field of flue gas outlet valves, in particular to a fireproof check valve for a smoke exhaust pipeline.

Background

The flue check valve is commonly used in the smoke exhaust pipeline of a household range hood, and oil smoke in a kitchen is exhausted into the check valve through a range hood and then is exhausted into a longitudinal flue in a building through the flue check valve.

The existing flue check valve covers the air outlet by means of the gravity of the valve plate, and when the range hood discharges smoke, the valve plate is opened by the driving force of the smoke and then discharged into a smoke discharge pipeline; for the existing residential buildings, one smoke exhaust pipeline is commonly shared by multiple residents.

In view of the above-mentioned related technologies, the inventor believes that, because the smoke exhaust duct is common, when one household catches fire, hot smoke is discharged into the smoke exhaust duct through the flue check valve, and then enters other households through the flue check valves of other households, and at this time, the defect that the flue check valve is poor in fireproof effect appears.

SUMMERY OF THE UTILITY MODEL

In order to promote the fire prevention effect of flue check valve, this application provides a fire prevention check valve for exhaust pipe.

The application provides a fire prevention check valve for exhaust pipe adopts following technical scheme:

a fireproof check valve for a smoke exhaust pipeline comprises a bent pipe main body installed on the smoke exhaust pipeline, wherein one end of the bent pipe main body, which is located in the smoke exhaust pipeline, is an exhaust port, one end of the bent pipe main body, which is located outside the smoke exhaust pipeline, is an air inlet, a smoke exhaust check valve plate is installed in the bent pipe main body, one section of the bent pipe main body, which is located in the smoke exhaust pipeline, is a vertical section, a containing cavity is communicated and arranged on the side wall of the vertical section of the bent pipe main body, a plugging plate used for plugging the bent pipe main body is arranged in the containing cavity in a sliding mode, the plugging plate is located at a position close to the exhaust port, a pressure spring is arranged on the inner bottom wall of the containing cavity, one end of the pressure spring is connected with the inner bottom wall of the containing cavity, the other end of the pressure spring is connected, the fuse wire is close to the position of the containing cavity and the communicating opening of the bent pipe main body, and one end of the plugging plate, which deviates from the pressure spring, is abutted against the fuse wire.

By adopting the technical scheme, when no hot smoke exists in the smoke exhaust pipeline, the smoke exhaust check valve plate can normally perform smoke exhaust work; when the temperature of the smoke in the smoke exhaust pipeline reaches the fusing temperature of the fuse wire, the fuse wire is fused, and the fuse wire does not resist the blocking plate any more; under the effort of pressure spring, the shutoff board is from holding in the intracavity releases the return bend main part, until the shutoff board laminates mutually with the inboard wall of return bend main part, the shutoff board just can carry out the shutoff to the inside of return bend main part this moment, prevents better that hot flue gas from looping through the gas vent and the air inlet of return bend main part and entering into other households, has promoted the fire prevention effect of flue check valve.

Optionally, the accommodating cavity is provided with a telescopic rod, the telescopic rod is arranged in the pressure spring in a penetrating mode, the length direction of the telescopic rod is consistent with the thrust direction of the pressure spring, one end of the telescopic rod is fixed on the inner bottom wall of the accommodating cavity, and the other end of the telescopic rod is connected with the side wall of the plugging plate.

Through adopting above-mentioned technical scheme, when the pressure spring promoted the shutoff board and removed, the extension was followed to the telescopic link because the inside at the pressure spring is worn to establish by the telescopic link to can lead to the thrust direction of pressure spring, thereby can make the shutoff board better to the shutoff effect of return bend main part.

Optionally, the telescopic link includes slide bar and a fixed section of thick bamboo, the slide bar slides and sets up in a fixed section of thick bamboo, the one end of slide bar is connected with the lateral wall of shutoff board, the one end that a fixed section of thick bamboo deviates from the shutoff board is connected with the interior diapire wall that holds the chamber.

By adopting the technical scheme, when the pressure spring pushes the plugging plate to move, the sliding rod and the fixed cylinder slide relatively, so that the sliding rod moves synchronously along with the plugging plate; the sliding rod is more stable in sliding fit with the fixed cylinder, so that the moving process of the plugging plate is more stable.

Optionally, a support bar is horizontally arranged in the elbow main body, and the top wall of the support bar is flush with the bottom wall of the plugging plate.

Through adopting above-mentioned technical scheme, when the shutoff board from holding the intracavity roll-off, the support bar can support the shutoff board, has the effect that makes the shutoff board can remove along the horizontal direction betterly, and furtherly can make the lateral wall of shutoff board better with the laminating effect of the inside wall of return bend main part.

Optionally, an annular clamping groove is formed in the inner side wall of the elbow main body, and the annular clamping groove is opposite to the blocking plate in the horizontal direction.

Through adopting above-mentioned technical scheme, after the shutoff board removed to hold the intracavity, the lateral wall and the annular draw-in groove looks joint of shutoff board can make the difficult emergence swing of shutoff board to make the shutoff effect of shutoff board better.

Optionally, a sealing rubber layer is arranged on the inner side wall of the annular clamping groove.

Through adopting above-mentioned technical scheme, when the lateral wall of shutoff board and annular draw-in groove looks joint, sealing rubber layer can make the difficult clearance through between shutoff board and the return bend main part of flue gas pass through, has the effect that makes the shutoff board better to the isolation effect of flue gas.

Optionally, can dismantle on the inside wall of return bend main part and be provided with two mounting panels, two the mounting panel is located the both sides that hold chamber and return bend main part intercommunication mouth, the fuse is located between two mounting panels, the one end of fuse is connected with a mounting panel, the other end is connected with another mounting panel.

By adopting the technical scheme, the two mounting plates are detachably mounted on the inner side wall of the elbow main body, so that the fuse is arranged at the communication port between the accommodating cavity and the elbow main body, and the mounting plate can be conveniently detached from the elbow main body; when the fuse wire is fused, the fuse wire is convenient to replace.

Optionally, a rivet is arranged on the mounting plate, and the rivet penetrates through the mounting plate and is riveted on the inner side wall of the elbow pipe main body.

By adopting the technical scheme, the rivet penetrates through the mounting plate and is riveted on the elbow pipe main body, so that the mounting plate is mounted on the elbow pipe main body; the rivet has a simple structure and has the effect of facilitating the installation of the mounting plate by workers.

In summary, the present application includes at least one of the following beneficial technical effects:

after the fuse wire is fused, the blocking plate is attached to the inner side wall of the elbow main body under the action of the pressure spring, at the moment, the blocking plate can block the interior of the elbow main body, hot smoke is well prevented from entering other households through the exhaust port and the air inlet of the elbow main body, and the fireproof effect of the flue check valve is improved;

the arrangement of the telescopic rod can guide the thrust direction of the pressure spring, so that the plugging effect of the plugging plate on the elbow main body is better;

the lateral wall of shutoff board and annular draw-in groove looks joint can make the difficult emergence swing of shutoff board to make the shutoff effect of shutoff board better.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present application.

FIG. 2 is a cross-sectional view for showing the internal structure of the elbow body.

Fig. 3 is a sectional view for showing an inner structure of the receiving chamber.

Description of reference numerals: 1. a bend pipe main body; 11. an exhaust port; 12. an air inlet; 13. a smoke exhaust check valve plate; 14. fusing the wires; 15. a supporting strip; 16. an annular neck; 161. a sealing rubber layer; 17. mounting a plate; 171. riveting; 2. an accommodating chamber; 21. a plugging plate; 22. a pressure spring; 23. a telescopic rod; 231. a slide bar; 232. a fixed cylinder; 3. a smoke exhaust pipeline.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a fire prevention check valve for smoke exhaust pipeline. Referring to fig. 1 and 2, the fireproof check valve for the smoke exhaust pipeline comprises a bent pipe main body 1, wherein the bent pipe main body 1 is arranged on a smoke exhaust pipeline 3; an exhaust port 11 is arranged at one end of the elbow main body 1 positioned in the smoke exhaust pipeline 3, an air inlet 12 is arranged at one end of the elbow main body 1 positioned outside the smoke exhaust pipeline 3, and a smoke exhaust check valve plate 13 is arranged in the elbow main body 1; when the general smoke exhaust work is carried out, smoke generated in a household room enters the elbow pipe main body 1 through the air inlet 12 of the elbow pipe main body 1, and then the smoke drives the smoke exhaust check valve plate 13 to be opened, so that the smoke is exhausted into the smoke exhaust pipeline 3 through the air outlet 11 of the elbow pipe main body 1.

Referring to fig. 1 and 2, a section of the elbow main body 1 located in the smoke exhaust pipeline 3 is a vertical section, and the vertical section elbow main body 1 is parallel to the central axis direction of the smoke exhaust pipeline 3; the side wall of the vertical section of the elbow main body 1 is provided with an accommodating cavity 2, the accommodating cavity 2 is a shell with a hollow interior, and the interior of the accommodating cavity 2 is communicated with the interior of the elbow main body 1; a plugging plate 21 is arranged in the accommodating cavity 2 in a sliding manner, the plugging plate 21 is used for plugging the inside of the elbow main body 1, and the plugging plate 21 is positioned at a position close to the exhaust port 11; the inner bottom wall of the accommodating cavity 2 is provided with two pressure springs 22, the two pressure springs 22 are symmetrically arranged, one end of each pressure spring 22 is connected with the inner bottom wall of the accommodating cavity 2, the other end of each pressure spring 22 is connected with the side wall of the plugging plate 21, and the pressure springs 22 have the tendency of enabling the plugging plates 21 to move towards the outside of the accommodating cavity 2 all the time; the vertical fusible link 14 that is provided with in the inside of return bend main part 1, fusible link 14 are located and are close to the position that holds chamber 2 and return bend main part 1 intercommunication mouth, and the one end that shutoff board 21 deviates from pressure spring 22 is with fusible link 14 looks butt.

When the flue gas temperature in the exhaust pipe 3 reaches the fusing temperature of the fusing wire 14, the fusing wire 14 is fused, at the moment, under the action force of the pressure spring 22, the blocking plate 21 is pushed to move towards the outside of the accommodating cavity 2 until the side wall of the blocking plate 21 is abutted against the inner side wall of the elbow main body 1, at the moment, the flue gas can be well prevented from entering the house of a resident through the exhaust port 11 and the air inlet 12 of the elbow main body 1, and the fireproof effect of the flue check valve is improved.

Referring to fig. 2 and 3, the accommodating cavities 2 are symmetrically provided with telescopic rods 23, and one telescopic rod 23 corresponds to one pressure spring 22; the telescopic link 23 comprises slide bar 231 and a fixed cylinder 232, the inside at pressure spring 22 is all worn to establish by slide bar 231 and a fixed cylinder 232, the length direction of slide bar 231 and a fixed cylinder 232 all is unanimous with the thrust direction of pressure spring 22, slide bar 231 slides and sets up in a fixed cylinder 232, the one end of slide bar 231 is connected with the lateral wall of closure plate 21, the one end that a fixed cylinder 232 deviates from closure plate 21 is connected with the interior bottom wall that holds chamber 2.

When the plugging plate 21 moves, the plugging plate 21 drives the sliding rod 231 to slide in the fixed cylinder 232; because the sliding rod 231 and the fixed cylinder 232 are both arranged in the compression spring 22 in a penetrating manner, the compression spring 22 can be well guided.

Referring to fig. 2 and 3, two support bars 15 are horizontally arranged in the elbow main body 1, two ends of each support bar 15 are fixed to the inner side wall of the elbow main body 1, and the top wall of each support bar 15 is flush with the bottom wall of the plugging plate 21.

When the shutoff board 21 removed, the diapire of shutoff board 21 was laminated with the roof of support bar 15 mutually all the time, and shutoff board 21 removes along the horizontal direction, can make the lateral wall of shutoff board 21 better with the laminating effect of the inside wall of return bend main part 1, and furtherly makes shutoff board 21 better to the closed effect of return bend main part 1.

Referring to fig. 2 and 3, an annular clamping groove 16 is formed in the inner side wall of the elbow main body 1, the annular clamping groove 16 is opposite to the blocking plate 21 in the horizontal direction, and a sealing rubber layer 161 is arranged on the inner side wall of the annular clamping groove 16.

When the plugging plate 21 moves under the action of the pressure spring 22, the plugging plate 21 is finally clamped with the annular clamping groove 16, so that the connection relationship between the plugging plate 21 and the elbow main body 1 is more stable; the sealing rubber layer 161 is arranged, so that the effect of the blocking plate 21 for blocking smoke is further improved.

Referring to fig. 2, two mounting plates 17 are arranged on the inner side wall of the elbow main body 1, the cross section of each mounting plate 17 is L-shaped, the two mounting plates 17 are positioned on two sides of a communication port between the accommodating cavity 2 and the elbow main body 1, the fusible link 14 is positioned between the two mounting plates 17, and two ends of the fusible link 14 are respectively fixedly connected with the plate surfaces of the two mounting plates 17; all seted up the perforation on two mounting panels 17, all be provided with rivet 171 on two mounting panels 17, rivet 171 passes behind the corresponding perforation and the inside wall of return bend main part 1 rivets.

The fuse wire 14 is arranged in the elbow pipe main body 1 through the mounting plate 17, and as the mounting plate 17 is riveted in the elbow pipe main body 1 through the rivet 171, when the fuse wire 14 is fused, only one group of the mounting plate 17 and the fuse wire 14 needs to be replaced; there is an advantage in that it is easy to replace the fusible link 14.

The implementation principle of the fireproof check valve for the smoke exhaust pipeline in the embodiment of the application is as follows: firstly, mounting the mounting plate 17 in the elbow main body 1, and enabling the fuse wire 14 to be abutted with one end of the plugging plate 21 departing from the pressure spring 22; when the smoke temperature in the smoke exhaust pipeline 3 reaches the fusing temperature of the fusing wire 14, the fusing wire 14 is fused, the plugging plate 21 is pushed to move under the action of the pressure spring 22 until the plugging plate 21 plugs the end of the exhaust port 11 of the elbow main body 1, and at the moment, hot smoke is not easy to enter the elbow main body 1 from the exhaust port 11, so that the fireproof effect of the flue check valve is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a fire prevention check valve for exhaust pipe which characterized in that: including installing return bend main part (1) on exhaust pipe (3), return bend main part (1) is located the one end in exhaust pipe (3) and is gas vent (11), return bend main part (1) is located the outer one end of exhaust pipe (3) and is air inlet (12), be equipped with in return bend main part (1) and discharge fume check valve piece (13), one section that return bend main part (1) is located exhaust pipe (3) is vertical section, the intercommunication is provided with on the lateral wall of return bend main part (1) vertical section and holds chamber (2), it is provided with shutoff board (21) that are used for shutoff return bend main part (1) to hold to slide in chamber (2), shutoff board (21) are located the position that is close to gas vent (11), be provided with pressure spring (22) on the interior diapire that holds chamber (2), the one end of pressure spring (22) is connected with the interior diapire that holds chamber (2) mutually, The other end is connected with the lateral wall of shutoff board (21), pressure spring (22) have and make shutoff board (21) move towards holding the trend that chamber (2) moved outward all the time, the vertical fuse (14) that is provided with on return bend main part (1), fuse (14) are located and are close to the position that holds chamber (2) and return bend main part (1) intercommunication mouth, shutoff board (21) deviate from the one end and the fuse (14) looks butt of pressure spring (22).

2. The fire-proof check valve for the smoke exhaust pipeline according to claim 1, wherein: the inner wall sealing device is characterized in that a telescopic rod (23) is arranged in the accommodating cavity (2), the telescopic rod (23) is arranged in the pressure spring (22) in a penetrating mode, the length direction of the telescopic rod (23) is consistent with the thrust direction of the pressure spring (22), one end of the telescopic rod (23) is fixed to the inner bottom wall of the accommodating cavity (2), and the other end of the telescopic rod is connected with the side wall of the sealing plate (21).

3. The fire-proof check valve for the smoke exhaust pipeline according to claim 2, wherein: telescopic link (23) include slide bar (231) and fixed section of thick bamboo (232), slide bar (231) slide and set up in fixed section of thick bamboo (232), the one end of slide bar (231) is connected with the lateral wall of shutoff board (21), fixed section of thick bamboo (232) deviate from the one end of shutoff board (21) and hold the interior diapire that chamber (2) are connected.

4. The fire-proof check valve for the smoke exhaust pipeline according to claim 1, wherein: the bent pipe is characterized in that a supporting strip (15) is horizontally arranged in the bent pipe main body (1), and the top wall of the supporting strip (15) is flush with the bottom wall of the plugging plate (21).

5. The fire-proof check valve for the smoke exhaust pipeline according to claim 4, wherein: the inner side wall of the elbow main body (1) is provided with an annular clamping groove (16), and the annular clamping groove (16) is opposite to the plugging plate (21) in the horizontal direction.

6. The fire-proof check valve for the smoke exhaust pipeline according to claim 5, wherein: and a sealing rubber layer (161) is arranged on the inner side wall of the annular clamping groove (16).

7. The fire-proof check valve for the smoke exhaust pipeline according to claim 1, wherein: can dismantle on the inside wall of return bend main part (1) and be provided with two mounting panels (17), two mounting panel (17) are located the both sides that hold chamber (2) and return bend main part (1) intercommunication mouth, fuse (14) are located between two mounting panels (17), the one end of fuse (14) is connected with a mounting panel (17), the other end is connected with another mounting panel (17).

8. The fire-proof check valve for the smoke exhaust pipeline according to claim 7, wherein: be provided with rivet (171) on mounting panel (17), rivet (171) pass mounting panel (17) back riveting on the inside wall of return bend main part (1).