CN217422323U - Fire-proof valve - Google Patents

Abstract

The utility model provides a fire-proof valve, relating to the technical field of valves, which comprises a valve body and a fire-proof sheet arranged on the valve body; the fire-proof piece comprises a connecting part and a fusible part which are connected, the connecting part is fixedly connected with the valve body, and the fire-proof piece is provided with a limiting structure for limiting the fire-proof rod between the fire-proof piece and the valve body; the fusible part can be separated from the connecting part under the action of high heat, and the fireproof rod is controlled to release to push the check sheet to turn over to a closed state. The technical problem of how to smoothly close the check sheet in the fire in the prior art is solved, and the technical effects of effectively preventing smoke from entering a public flue and preventing the fire from spreading are achieved.

Description

Fire-proof valve

Technical Field

The utility model belongs to the technical field of the technique of valve and specifically relates to a fire prevention valve is related to.

Background

Currently, range hoods are installed in most kitchens. When the range hood is used, the smoke exhaust pipe of the range hood is communicated with the public flue in a building, in order to reduce or even prevent smoke in the public flue from flowing back into a kitchen through the smoke exhaust pipe, a fire damper is generally installed between the smoke exhaust pipe and the public flue, so that the smoke in the public flue can be reduced and can flow back into the kitchen, and the effect of preventing fire spreading can be achieved when the public flue is in a fire disaster.

In the prior art, a fire damper includes a valve body and a check plate for opening or closing an exhaust hole of the valve body. In general use, the check sheet is in a state of opening the valve body vent hole, and once a fire occurs, the check sheet is required to close the valve body vent hole so as to prevent smoke from flowing back to a user home through the common flue, so that it is very necessary to smoothly close the valve body vent hole by the check sheet when the fire occurs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire prevention valve to how to alleviate that exists among the prior art when the conflagration, make the check sheet realize closed technical problem smoothly.

In a first aspect, the present invention provides a fire damper, including: the valve body and the fireproof sheet are arranged on the valve body;

the fire-proof piece comprises a connecting part and a fusible part which are connected, the connecting part is fixedly connected with the valve body, and the fire-proof piece is provided with a limiting structure for limiting the fire-proof rod between the fire-proof piece and the valve body;

the fusible part can be separated from the connecting part under the action of high heat, and the fire-proof rod is controlled to release to push the check sheet to turn over to a closed state.

Furthermore, one end of the connecting part, which is far away from the fusible part, is provided with a convex edge;

the valve body is provided with a limiting hole, and the convex edge is inserted in the limiting hole.

Furthermore, the connecting part is also provided with a first fixing hole, and the valve body is provided with a second fixing hole matched with the first fixing hole;

and a connecting piece is arranged between the first fixing hole and the second fixing hole in a penetrating manner.

Further, the fusible part is provided with a lap joint area, the lap joint area is provided with a process hole used for filling molten welding materials, and the process hole is connected with the lap joint area through welding.

Furthermore, limit structure is including locating the section of bending of keeping away from the one end of connecting portion, the extending direction of the section of bending with the extending direction on protruding edge is unanimous.

Further, the valve body comprises a valve back plate and a valve enclosing plate arranged around the valve back plate, and the valve back plate and the valve enclosing plate enclose an accommodating cavity with a side opening;

the limiting hole and the second fixing hole are both arranged at the bottom side of the valve coaming.

Furthermore, the fire damper also comprises a fire-proof rod, and the fire-proof rod comprises connecting sections positioned at two ends and a stopping section positioned in the middle of the connecting sections;

the connecting sections at two ends of the fire-proof rod are rotatably connected to the opposite side walls of the valve body, and the stopping section is limited between the fire-proof sheet and the valve body, so that the fire-proof rod has a twisting trend of turning towards a stopping state;

the overturning track of the fire-proof rod to the stopping state is consistent with the overturning track of the check sheet to the closing state, so that the stopping section can push the back surface of the check sheet to overturn to the closing state after being released.

Furthermore, mounting brackets are arranged on the opposite side walls of the valve body;

the connecting section of the fire-proof rod is arranged on the mounting bracket through a stop elastic piece.

Furthermore, a fixed shaft for mounting the non-return sheet is arranged on the mounting bracket, and the rotating axis of the fixed shaft is lower than that of the connecting section;

the stop section is limited between the fireproof sheet and the bottom side of the valve body, and the fixing shaft is located on the inner side of the valve body relative to the stop section and is higher than the lowest position of the stop section.

Further, the fire-proof pole is constructed of a long pole bent to form an elongated frame;

the long rod is provided with a C-shaped structure, the middle part of the C-shaped structure forms the stop section, and the width of the C-shaped structure is not less than the diameter or the width of the backstop sheet.

Has the advantages that:

the utility model provides a fire-proof valve, the fire prevention piece includes connecting portion and can melt the portion, and connecting portion fixed connection can realize the whole fixed mounting on the valve body of fire prevention piece in the valve body; due to the fact that the fireproof sheet is provided with the limiting structure, after the fireproof sheet is integrally installed on the valve body, the fireproof rod can be limited between the fireproof sheet and the valve body, and the fireproof rod can be regarded as being in a locking state at the moment; because the fusible portion can separate with connecting portion under the high fever effect, after both separation, the effect of locking is no longer played to the fire prevention pole to the fire prevention piece, and the fire prevention pole can be released to realize that the fire prevention pole promotes the non return piece and overturn to the closed state, prevent that the flue gas from getting into public flue.

Therefore, the fire-proof valve can release the fire-proof sheet under the self-owned high-heat condition of a fire, and the non-return sheet is pushed to act through the fire-proof rod, so that the non-return sheet is smoothly closed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a fire damper according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a fire-retardant sheet;

FIG. 3 is a schematic structural view of a valve body;

fig. 4 is a side view of a fire damper according to an embodiment of the present invention, in which a is a partially cut-away position;

FIG. 5 is a partial cross-sectional view taken at A of FIG. 4;

FIG. 6 is a schematic view of the structure of the fire-fighting rod.

Icon:

100-a valve body; 110-a valve back plate; 120-valve coaming; 121-a limiting hole; 122-a second fixing hole;

200-a fire-proof sheet; 210-a connecting portion; 220-fusible parts; 230-bending sections; 211-convex edge; 212-first fixing hole; 221-fabrication holes;

300-a fire-proof rod; 310-a connecting segment; 320-a stop section;

400-mounting a bracket; 410-a fixed shaft;

500-stop elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, the present embodiment provides a fire damper, which includes a valve body 100 and a fire prevention sheet 200 provided to the valve body 100; the fire-proof sheet 200 comprises a connecting part 210 and a fusible part 220 which are connected, the connecting part 210 is fixedly connected with the valve body 100, and the fire-proof sheet 200 is provided with a limiting structure for limiting the fire-proof rod 300 between the fire-proof rod and the valve body 100; the fusible part 220 can be separated from the connection part 210 under the high heat effect, and the release of the fire-proof lever 300 is controlled to realize that the fire-proof lever 300 pushes the check piece to turn over to the closed state.

In the fire damper provided by the embodiment, the connecting portion 210 is connected with the fusible portion 220, and the connecting portion 210 is fixedly connected to the valve body 100, so that the fire-proof piece 200 can be integrally and fixedly mounted on the valve body 100; because the fire-proof piece 200 has a limit structure, after the whole fire-proof piece 200 is mounted on the valve body 100, the fire-proof rod 300 can be limited between the fusible part 220 and the valve body 100, and at this time, the fire-proof rod 300 can be regarded as being in a locking state; because the fusible part 220 can be separated from the connecting part 210 under the action of high heat, after the fusible part and the connecting part are separated, the fireproof sheet 200 does not play a role in locking the fireproof rod 300 any more, and the fireproof rod 300 can be released, so that the fireproof rod 300 pushes the non-return sheet to turn over towards a closed state, and smoke is prevented from entering a public flue.

Therefore, the fire-proof valve of the embodiment can release the fire-proof sheet 200 under the self-owned high-heat condition of a fire, and the non-return sheet is pushed to act through the fire-proof rod 300, so that the non-return sheet is smoothly turned over to the closed state.

Referring to fig. 2 to 5, a convex edge 211 is provided at an end of the connecting portion 210 away from the fusible portion 220; valve body 100 is equipped with spacing hole 121, and protruding edge 211 is inserted and is located spacing hole 121, so set up, can realize just fixing to fire prevention piece 200 is whole, and simultaneously, protruding edge 211 cooperates with spacing hole 121, can play the effect of spacing installation to fire prevention piece 200.

Further, the connecting portion 210 is further provided with a first fixing hole 212, the valve body 100 is provided with a second fixing hole 122 matched with the first fixing hole 212, and a connecting member is arranged between the first fixing hole 212 and the second fixing hole 122 in a penetrating manner.

Alternatively, the connecting member may be a screw, a bolt, a screw, a rivet, or the like.

When the fireproof sheet 200 is fixed, the convex edge 211 penetrates through the limiting hole 121 to form limiting, then the connecting piece penetrates through the first fixing hole 212 and the second fixing hole 122, so that the fireproof sheet 200 is fixed on the valve body 100, the fireproof sheet 200 is ensured to be fixed by only one screw and cannot rotate, and meanwhile, the fireproof sheet 200 can limit the position of the fireproof rod 300 in a normal temperature environment.

Referring to fig. 2, the fusible parts 220 are provided with a lap area provided with a process hole 221 for filling a molten welding material and connected by welding at the lap area.

Wherein, the molten welding material can be metallic tin; the process holes 221 may be opened in a plurality of, for example, two.

In a specific embodiment, the fire-proof sheet 200 may adopt two sheet structures, the materials of the two sheet structures may be the same, the two sheet structures form the aforementioned overlapping region at the joint and are welded at the joint, when a fire occurs, the molten welding material is in a molten state by high heat, so as to separate the two sheet structures, since one of the sheet structures is connected to the valve body 100 through the connecting member, the two sheet structures may not be separated from the valve body 100 within a period of time, while the other sheet structure may be separated, so as to release the fire-proof rod 300. In this embodiment, the overlapping region formed at the joint between the two can be regarded as the fusible part 220.

As a variation, the two sheet structures may be made of different materials, wherein one sheet structure may be made of a fusion welding material, and in such a structure, when a fire occurs, one sheet structure is in a fusion state by high heat, and thus is separated from the other sheet structure; in this embodiment, the entire former sheet structure may be regarded as the fusible part 220.

With reference to fig. 2, the limiting structure includes a bending section 230 disposed at an end away from the connecting portion 210, and an extending direction of the bending section 230 is the same as an extending direction of the protruding edge 211, so as to lock the fire prevention lever 300 between the fire prevention lever and the valve body 100.

Referring to fig. 3, the valve body 100 includes a valve back plate 110 and a valve enclosing plate 120 enclosing the valve back plate 110, and the valve back plate 110 and the valve enclosing plate 120 enclose an accommodating cavity with side openings; the limiting hole 121 and the second fixing hole 122 are both opened at the bottom side of the valve enclosure 120, and thus are configured to match with the check sheet in a manner of being turned and opened from top to bottom.

It should be noted that, according to the opening and closing direction of the non-return sheet, a proper position can be selected for locking the fire-proof rod 300 at the valve body 100, that is, a proper position of the valve body 100 is selected to be provided with the limiting hole 121 and the second fixing hole 122; for example, when the check plate is opened in a bottom-up flip manner, the stopper hole 121 and the second fixing hole 122 may be opened at a top side of the valve enclosure 120 opposite to the bottom side.

The structure of the fire prevention piece 200 has been described above, and the structure of the fire prevention bar 300 will be described in detail.

Referring to fig. 1, 5 and 6, the fire damper further includes a fire-proof lever 300, the fire-proof lever 300 including a connecting section 310 at both ends and a stopping section 320 at the middle thereof; the connecting sections 310 at the two ends of the fire-proof rod 300 are rotatably connected to the opposite side walls of the valve body 100, and the stopping section 320 is limited between the fire-proof sheet 200 and the valve body 100, so that the fire-proof rod 300 has a twisting tendency of turning towards a stopping state; the trajectory of the fire-proof lever 300 turning to the blocking state is identical to the trajectory of the non-return flap turning to the closing state, so that the blocking section 320 can push the back of the non-return flap to turn to the closing state after being released.

In brief, when a fire disaster does not occur, referring to fig. 5, the stopping section 320 is limited between the bending section 230 and the bottom side of the valve enclosure 120, and at this time, the opening track of the check plate is left, so that the check plate can be turned over from top to bottom to be opened; when a fire breaks out, the stopping section 320 is released, and since the turning track of the fire-proof rod 300 to the stopping state is identical to the turning track of the non-return sheet to the closing state, at this time, the stopping section 320 will push the back of the non-return sheet to turn to the closing state, so that the non-return sheet is in the closing state.

In this embodiment, referring to fig. 1 and 6, mounting brackets 400 are provided on opposite sidewalls of the valve body 100; the connection section 310 of the fire prevention lever 300 is mounted to the mounting bracket 400 by the stopper elastic member 500.

Alternatively, the stop elastic member 500 may adopt a stop torsion spring so that the fire prevention piece 200 has a return torsion tendency in the locked state.

Further, a fixing shaft 410 for mounting the non-return sheet is provided on the mounting bracket 400, and a rotation axis of the fixing shaft 410 is lower than that of the connecting section 310; the stopping section 320 is limited between the fire-proof sheet 200 and the bottom side of the valve body 100, and the fixing shaft 410 is located on the inner side of the valve body 100 relative to the stopping section 320 and is higher than the lowest position of the stopping section 320.

In the aforementioned arrangement, the switching of the fire prevention lever 300 between the locking state and the releasing state can be achieved by rotating the fire prevention lever 300 about the rotation axis of the connection section 310, and the opening and closing of the check plate can be achieved by the rotation of the check plate about the rotation axis of the fixed shaft 410; meanwhile, by setting the specific positions of the rotation axis of the fixing shaft 410, the rotation axis of the connecting section 310, the fixing shaft 410, the stopping section 320 and the like, when the stopping section 320 of the fire-proof lever 300 is released, effective blocking can be formed on the back surface of the backstop sheet to limit the backstop sheet from being opened.

Referring to fig. 6, the fire prevention pole 300 of the present embodiment is constructed of a long pole bent to form an elongated frame; the long bar has a C-like structure, wherein a middle portion of the C-like structure forms the stopper section 320, and a width of the C-like structure is not less than a diameter or a width of the ratchet piece, so that the stopper section 320 can form an effective stopper at a rear surface of the ratchet piece.

Wherein, each side of the C-like structure can be set as a straight side, and the angle between adjacent sides can be set as 90 degrees.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A fire damper, comprising: the valve comprises a valve body (100) and a fireproof sheet (200) arranged on the valve body (100);

the fireproof sheet (200) comprises a connecting part (210) and a fusible part (220) which are connected, the connecting part (210) is fixedly connected to the valve body (100), and the fireproof sheet (200) is provided with a limiting structure for limiting a fireproof rod (300) between the fireproof sheet and the valve body (100);

the fusible part (220) can be separated from the connecting part (210) under the action of high heat, and the fire-proof rod (300) is controlled to release to push the non-return sheet to turn over to a closed state.

2. A fire damper according to claim 1, characterised in that the end of the connecting portion (210) remote from the fusible portion (220) is provided with a raised edge (211);

the valve body (100) is provided with a limiting hole (121), and the convex edge (211) is inserted in the limiting hole (121).

3. A fire damper according to claim 2, characterised in that the connecting portion (210) is further provided with a first fixing hole (212), and the valve body (100) is provided with a second fixing hole (122) cooperating with the first fixing hole (212);

a connecting piece penetrates between the first fixing hole (212) and the second fixing hole (122).

4. A fire damper according to claim 1, characterised in that the fusible part (220) is provided with a lap area provided with a process hole (221) for filling with molten welding material and connected by welding at the lap area.

5. A fire damper according to claim 2, characterised in that the limiting structure comprises a bending section (230) arranged at an end remote from the connecting portion (210), and the extending direction of the bending section (230) is identical to the extending direction of the convex edge (211).

6. The fire damper according to claim 3, wherein the valve body (100) comprises a valve back plate (110) and a valve enclosing plate (120) surrounding the valve back plate (110), and the valve back plate (110) and the valve enclosing plate (120) enclose a containing cavity with side openings;

the limiting hole (121) and the second fixing hole (122) are both arranged at the bottom side of the valve enclosing plate (120).

7. A fire damper according to any of claims 1-6, characterized in that the fire damper further comprises a fire damper rod (300), the fire damper rod (300) comprising a connecting section (310) at both ends and a stop section (320) in between;

the connecting sections (310) at two ends of the fire-proof rod (300) are rotatably connected to opposite side walls of the valve body (100), and the stopping section (320) is limited between the fire-proof sheet (200) and the valve body (100) so that the fire-proof rod (300) has a twisting tendency of turning towards a stopping state;

the overturning track of the fire-proof rod (300) to the stopping state is consistent with the overturning track of the non-return sheet to the closing state, so that the stopping section (320) can push the back surface of the non-return sheet to overturn to the closing state after being released.

8. A fire damper according to claim 7, characterised in that mounting brackets (400) are provided on opposite side walls of the valve body (100);

the connection section (310) of the fire-proof rod (300) is mounted to the mounting bracket (400) through a stopper elastic member (500).

9. The fire prevention valve of claim 8, wherein a fixing shaft (410) for installing a non-return sheet is provided on the mounting bracket (400), and a rotation axis of the fixing shaft (410) is lower than that of the connection section (310);

the stop section (320) is limited between the fireproof sheet (200) and the bottom side of the valve body (100), and the fixing shaft (410) is located on the inner side of the valve body (100) relative to the stop section (320) and higher than the lowest position of the stop section (320).

10. The fire damper of claim 7, wherein the fire bar (300) is constructed of a long bar bent to form an elongated frame;

the long rod has a C-like structure, the middle part of the C-like structure forms the stopping section (320), and the width of the C-like structure is not less than the diameter or width of the backstop sheet.

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