CN220037543U

CN220037543U - Fireproof reset assembly

Info

Publication number: CN220037543U
Application number: CN202321687329.0U
Authority: CN
Inventors: 刘兵
Original assignee: Yancheng Baishida Building Material Co ltd
Current assignee: Yancheng Baishida Building Material Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-11-17
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to a fireproof reset assembly which is arranged in a fireproof check valve, wherein the fireproof check valve comprises a valve body and a valve plate; the valve body comprises a ventilation pipe and a supporting plate formed on the peripheral surface of the ventilation pipe, and the ventilation pipe is provided with an air inlet and an air outlet; the valve plate is pivotally connected with the valve body and matched with the air outlet; the fireproof reset assembly comprises a mounting seat arranged in the ventilation pipe, a first connecting arm, a second connecting arm, a pressing support and a temperature sensing element, wherein one end of the first connecting arm is in pivot connection with the mounting seat, one end of the second connecting arm is in pivot connection with the other end of the first connecting arm, the other end of the second connecting arm is in pivot connection with the valve plate, the pressing support is in pivot connection with the mounting seat and is arranged opposite to the first connecting arm, and the temperature sensing element is arranged on the mounting seat and used for limiting the pressing support; the reliability of the fireproof reset assembly can be guaranteed so as to ensure that the valve plate seals the air outlet.

Description

Fireproof reset assembly

Technical Field

The utility model belongs to the technical field of fireproof check valves, relates to a part of a fireproof check valve, and in particular relates to a fireproof reset assembly.

Background

The fireproof check valve is used for being arranged at an air inlet of the flue and further connected with the smoke exhaust ventilator through the smoke exhaust pipe so as to exhaust dirty air such as indoor oil smoke and the like and prevent smoke in the flue from flowing backwards; and when fire occurs in the building, if the fire spreads from the flue to the room, the check valve can be automatically closed to prevent the fire from spreading.

The Chinese patent application No. 202122516163.3 discloses a fireproof check valve, which comprises a valve pipe and a valve, wherein the valve is hinged at one end of the valve pipe; a supporting seat is arranged in the valve pipe, and a reset arm group for linking the valve to reset and a first fireproof mechanism for limiting the action of the reset arm group are arranged on the supporting seat; the first fireproof mechanism comprises an opening and closing claw, a sliding rod and a fusing component; the support seat is provided with a sliding groove, and the sliding rod can slide along the sliding groove; when the fusing component fuses, the opening and closing claw is in an open state, and the sliding rod slides to the other end of the sliding groove so as to limit the action of the reset arm group; the application mainly solves the problem that the pressing force of the torsion spring to the reset arm group is insufficient; this kind of fire prevention check valve, the slide bar can provide great suppression power to the action of restriction reset arm group makes the unable lifting of reset arm group, thereby taut valve makes the valve can not open, avoids flame to get into indoor exhaust flue through the valve pipe, also can avoid flame to scurry out outdoor exhaust flue through the valve pipe, and fire behavior is good.

The Chinese patent application No. 202123019508.0 discloses a fireproof check valve, which comprises a fireproof arm, an action spring and a fireproof mechanism; the valve body is provided with a guide long hole, the fireproof arm penetrates into the guide long hole and can slide along the guide long hole, one end of the action spring is fixed with the valve body, and the other end of the action spring is fixed with the fireproof arm; the fireproof mechanism is fixed on the valve body; when the fireproof mechanism is fused, the fireproof arm slides to the other end of the guide long hole under the action of the action spring and props against the valve. The application mainly solves the problem that the fireproof check valve is provided with a complex fireproof mechanism; this kind of fire prevention check valve through the cooperation of fire prevention mechanism and fire prevention arm, can realize the locking of valve, when meetting the condition of a fire, can avoid the flame in the public flue gas flue to scurry into resident indoor, or the flame of indoor one end scurry into public flue gas flue, its fire prevention mechanism simple structure is compact, and material cost is lower, and the assembly degree of difficulty is also lower simultaneously.

The fireproof mechanisms in the above patents are relatively complex, and the manufacturing process is complex, so that the cost is high. In addition, the fireproof check valve is required to be provided with a plurality of positioning teeth on the supporting seat, one end of the reset torsion spring can be clamped between every two positioning teeth, namely, a hook of the reset torsion spring can be clamped between every two positioning teeth so as to adjust the resilience force of the reset torsion spring, and therefore the pressure required by the airflow to open the valve is adjusted; or the fireproof mechanism of the fireproof check valve is fixed on the valve body, so that when the fireproof mechanism is not fused, at least one part of the fireproof mechanism can press the fireproof arm at one end of the guide long hole; when the fireproof mechanism is fused, the fireproof arm slides to the other end of the guide long hole under the action of the action spring and props against the valve; the reliability and practicality of the fireproof check valve are all problematic.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a fireproof reset assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a fire protection reset assembly mounted within a fire protection check valve, the fire protection check valve comprising a valve body and a valve plate; the valve body comprises a ventilation pipe and a supporting plate formed on the peripheral surface of the ventilation pipe, and the ventilation pipe is provided with an air inlet and an air outlet; the valve plate is pivotally connected with the valve body and matched with the air outlet;

the fireproof reset assembly comprises a mounting seat arranged in the ventilation pipe, a first connecting arm, a second connecting arm, a pressing support and a temperature sensing element, wherein one end of the first connecting arm is in pivot connection with the mounting seat, one end of the second connecting arm is in pivot connection with the other end of the first connecting arm, the other end of the second connecting arm is in pivot connection with the valve plate, the pressing support is in pivot connection with the mounting seat and is arranged opposite to the first connecting arm, and the temperature sensing element is arranged on the mounting seat and used for limiting the pressing support;

the pressing support is in a limiting state and a releasing state, when the pressing support is in the limiting state, the pressing support abuts against the temperature sensing element, and when the pressing support is in the releasing state, the pressing support abuts against the first connecting arm.

Optimally, an abutting groove is formed on the side surface of the pressing bracket facing the temperature sensing element; when the pressing support is in a limiting state, the temperature sensing element is propped against the propping groove.

Optimally, a first connecting shaft is arranged on the mounting seat in a penetrating way, one end of the first connecting arm is connected to the mounting seat through a pivot of the first connecting shaft, and a limiting spring which is positioned in the mounting seat and penetrates through the first connecting arm is sleeved on the first connecting shaft.

Further, a second connecting shaft is arranged on the mounting seat in a penetrating way, and the distance between the second connecting shaft and the valve plate is smaller than that between the first connecting shaft and the valve plate; the pressing support is pivotally connected to the mounting seat through the second connecting shaft.

Further, a torsion spring is sleeved on the second connecting shaft, the torsion spring is provided with a first torsion arm and a second torsion arm, the first torsion arm is hooked on the side face of the pressing support, and the second torsion arm is hooked on the side face of the mounting seat; when the temperature sensing element is heated and fused, the torsion spring drives the pressing support to rotate towards the direction prescribed by the first connecting arm.

Preferably, an inner recess is formed in the first connecting arm toward the side of the pressing bracket, and the top of the pressing bracket abuts against the inner recess when the pressing bracket is in the released state.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: according to the fireproof reset assembly, the pressing support is matched with the mounting seat, the first connecting arm, the second connecting arm, the temperature sensing element and the like, so that the structure of the fireproof reset assembly can be simplified; and the pressing support has two states of limiting and releasing, when the pressing support is in the limiting state, the pressing support abuts against the temperature sensing element, and when the pressing support is in the releasing state, the pressing support abuts against the first connecting arm, so that the reliability of the fireproof reset assembly can be guaranteed, and the sealing of the air outlet of the valve plate can be guaranteed.

Drawings

FIG. 1 is a first state diagram (limit state) of the fire protection reset assembly of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a second state diagram (released state) of the fire protection reset assembly of the present utility model;

fig. 4 is a partial enlarged view of fig. 3.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings:

the fire-proof reset assembly 2 shown in fig. 1 to 4 is installed in a fire-proof check valve (the fire-proof check valve may be conventional and comprises a valve body 1 and a valve plate 3. The valve body 1 comprises a ventilation pipe 12 and a supporting plate 11 formed on the peripheral surface of the ventilation pipe 12. The ventilation pipe 12 is provided with an air inlet 121 and an air outlet; the valve plate 3 is installed in the valve body 1 to be pivotally connected with the valve body 1 and matched with the air outlet) for pulling the valve plate 3 under certain conditions to forcibly close the air outlet of the valve body 1 (a sealing ring 31 is arranged at the edge of the valve plate 3 to ensure the tightness of the air outlet).

Specifically, the fire prevention reset assembly 2 includes a mount 21, a first connection arm 22, a second connection arm 23, a pressing bracket 24, a temperature sensing element 25, and the like. Wherein the mounting seat 21 is mounted within the ventilation tube 12 (i.e., the mounting seat 21 is mounted to the inner wall of the ventilation tube 12 by conventional fasteners such as screws). One end of the first connecting arm 22 is pivotally connected to the mounting base 21, specifically: the mounting seat 21 is provided with a first connecting shaft 211 in a penetrating way, so that one end of the first connecting arm 22 is pivotally connected to the mounting seat 21 through the first connecting shaft 211 (at this time, the first connecting shaft 211 penetrates through one end of the first connecting arm 22); in this embodiment, the first connecting shaft 211 is sleeved with the limiting spring 212 that is located in the mounting seat 21 and passes through the first connecting arm 22, so that the displacement of the first connecting arm 22 on the first connecting shaft 211 can be limited by using the limiting spring 212, and the stability of long-term use of the first connecting shaft 211 is ensured (the first connecting shaft 211 cannot fall off from the mounting seat 21). One end of the second connecting arm 23 is pivotally connected to the other end of the first connecting arm 22 (in this case, one end of the second connecting arm 23 is connected to the other end of the first connecting arm 22 by a set of bolt pairs) and the other end is pivotally connected to the valve plate 3, specifically, a connecting seat is mounted on the surface of the valve plate 3, and the other end of the second connecting arm 23 is pivotally connected to the connecting seat (conventionally). The pressing bracket 24 is pivotally connected to the mounting base 21 and is disposed opposite to the first connecting arm 22, specifically: the mounting seat 21 is provided with a second connecting shaft 213 in a penetrating manner, at this time, the distance between the second connecting shaft 213 and the valve plate 3 is smaller than that between the first connecting shaft 211 and the valve plate 3, and the pressing bracket 24 is pivotally connected to the mounting seat 21 through the second connecting shaft 213. In this embodiment, the second connecting shaft 213 is sleeved with a torsion spring 242, the torsion spring 242 has a first torsion arm and a second torsion arm, the first torsion arm is hooked on the side surface of the pressing support 24 (the side surface facing the valve plate 3), and the second torsion arm is hooked on the side surface of the mounting seat 21 (the side surface facing the valve plate 3), so that when the temperature sensing element 25 is fused by heating, the temperature sensing element 25 does not limit the pressing support 24 any more, and the torsion spring 242 drives the pressing support 24 to rotate in the direction prescribed by the first connecting arm 22. The temperature sensing element 25 is arranged on the mounting seat 21 and used for limiting the pressing support 24; specifically, the upper portion of the mounting seat 21 has a protruding portion extending horizontally inward, and the temperature sensing element 25 is correspondingly mounted on the protruding portion and restricts the pressing bracket 24 from rotating in the prescribed direction of the first connecting arm 22. Thus, the pressing bracket 24 has two states of limit and release, when it is in the limit state, the pressing bracket 24 abuts against the temperature sensing element 25; when the valve plate 3 is in a release state, the pressing support 24 is pressed against the first connecting arm 22 to enable the first connecting arm 22 to rotate outwards, so that the valve plate 3 forcibly closes the air outlet. The fireproof reset assembly 2 is simple in structure, easy to manufacture and assemble, low in cost, and good in reliability and practicality.

In the present embodiment, an abutment groove 241 is formed on the side surface facing the temperature sensing element 25 in the pressing bracket 24; when the pressing bracket 24 is in a limiting state, the temperature sensing element 25 just abuts against the abutting groove 241, so that the extrusion of the pressing bracket 24 to the torsion spring 242 can be reduced, and the service life of the pressing bracket is prolonged. The side of the first connecting arm 22 facing the pressing bracket 24 is formed with an inner notch 221, and when the pressing bracket 24 is in a released state, the top of the pressing bracket 24 abuts against the inner notch 221, so that the acting force required by the rotation of the first connecting arm 22 can be reduced, and the working reliability of the fireproof reset assembly 2 can be improved.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. A fire-proof reset assembly which is arranged in a fire-proof check valve, wherein the fire-proof check valve comprises a valve body (1) and a valve plate (3); the valve body (1) comprises a ventilation pipe (12) and a supporting plate (11) formed on the peripheral surface of the ventilation pipe (12), and the ventilation pipe (12) is provided with an air inlet (121) and an air outlet; the valve plate (3) is pivotally connected with the valve body (1) and is matched with the air outlet;

the method is characterized in that: the fireproof reset assembly (2) comprises a mounting seat (21) arranged in the ventilation pipe (12), a first connecting arm (22) with one end pivotally connected with the mounting seat (21), a second connecting arm (23) with one end pivotally connected with the other end of the first connecting arm (22) and the other end pivotally connected with the valve plate (3), a pressing bracket (24) pivotally connected on the mounting seat (21) and arranged opposite to the first connecting arm (22), and a temperature sensing element (25) arranged on the mounting seat (21) and used for limiting the pressing bracket (24);

the pressing support (24) has two states of limiting and releasing, when the pressing support is in the limiting state, the pressing support (24) abuts against the temperature sensing element (25), and when the pressing support is in the releasing state, the pressing support (24) abuts against the first connecting arm (22).

2. The fire protection reset assembly of claim 1, wherein: an abutting groove (241) is formed on the side surface of the pressing bracket (24) facing the temperature sensing element (25); when the pressing bracket (24) is in a limiting state, the temperature sensing element (25) is abutted against the abutting groove (241).

3. The fire protection reset assembly of claim 1, wherein: the mounting seat (21) is provided with a first connecting shaft (211) in a penetrating mode, one end of the first connecting arm (22) is connected onto the mounting seat (21) through the first connecting shaft (211) in a pivot mode, and the first connecting shaft (211) is sleeved with a limiting spring (212) which is located in the mounting seat (21) and penetrates through the first connecting arm (22).

4. A fire protection reset assembly according to claim 3, wherein: a second connecting shaft (213) is arranged on the mounting seat (21) in a penetrating way, and the distance between the second connecting shaft (213) and the valve plate (3) is smaller than the distance between the first connecting shaft (211) and the valve plate (3); the pressing bracket (24) is pivotally connected to the mounting base (21) through the second connecting shaft (213).

5. The fire protection reset assembly of claim 4, wherein: the second connecting shaft (213) is sleeved with a torsion spring (242), the torsion spring (242) is provided with a first torsion arm and a second torsion arm, the first torsion arm is hooked on the side surface of the pressing support (24), and the second torsion arm is hooked on the side surface of the mounting seat (21); when the temperature sensing element (25) is heated and fused, the torsion spring (242) drives the pressing support (24) to rotate towards the direction prescribed by the first connecting arm (22).

6. The fire protection reset assembly of claim 1, wherein: an inner notch (221) is formed in the side edge of the first connecting arm (22) facing the pressing bracket (24), and when the pressing bracket (24) is in a release state, the top of the pressing bracket (24) abuts against the inner notch (221).