Fireproof valve

Abstract

The utility model discloses a fireproof valve which comprises a valve body, a connecting rod, a hanging plate, a thermal fuse link and at least one pair of upper valve plate and lower valve plate, the upper end of the hanging plate is fixed to the top face of the inner wall of the valve body, the lower end of the hanging plate extends downwards, and the hanging plate is arranged close to the edge of the front end opening of the valve body. The upper valve plates and the lower valve plates are arranged in a one-to-one correspondence mode. The left end and the right end of the upper valve plate or the left end and the right end of the lower valve plate are rotationally installed on the inner wall of the valve body. When the lower end of the hanging plate is connected with the middle of the connecting rod through the thermal fuse link, the upper valve plate and the lower valve plate are in an open state, the upper valve plate and the lower valve plate horizontally extend in the front-back direction, and the upper end and the lower end of the connecting rod are rotationally connected to the front end edge of the upper valve plate and the front end edge of the lower valve plate respectively. When the thermal fuse link is fused due to heating, the connecting rod descends under the action of gravity to drive the upper valve plate and the lower valve plate to rotate so as to close and close the fireproof valve, and a driving device does not need to be configured.

Description

Technical Field

[0001] This utility model relates to the field of building safety technology, and in particular to a fireproof valve. Background Technology

[0002] In the existing technology, building ventilation or smoke exhaust systems are equipped with fire dampers to close and block the spread of smoke in the event of a fire, thereby extending the time available for people to escape.

[0003] Existing fire valves require an actuation device to close, which may cause damage to the power supply system or mechanical components of the actuation device during a fire, preventing the fire valve from closing in time. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to propose a fireproof valve to solve the problem that the fireproof valve cannot be closed in time due to damage to the power supply system or mechanical components of the drive device during a fire.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A fireproof valve includes a valve body, a connecting rod, a mounting plate and a thermoplastic diaphragm, and at least one pair of upper valve plates and lower valve plates;

[0007] The upper end of the hanging plate is fixed to the top surface of the inner wall of the valve body, the lower end of the hanging plate extends downward, and the hanging plate is disposed within the edge of the front opening of the valve body.

[0008] The upper valve plate and the lower valve plate are configured in a one-to-one correspondence; the left and right ends of the upper valve plate or the left and right ends of the lower valve plate are rotatably mounted on the inner wall of the valve body.

[0009] When the lower end of the hanging plate is connected to the middle of the connecting rod through the thermofused slit, the upper valve plate and the lower valve plate are in the open state. The upper valve plate and the lower valve plate extend horizontally in the front-back direction, and the upper end and the lower end of the connecting rod are rotatably connected to the front edge of the upper valve plate and the front edge of the lower valve plate, respectively.

[0010] Specifically, the connecting rod is provided with a first connecting arm, a second connecting arm, and a third connecting arm;

[0011] The upper valve plate is equipped with a first connecting plate, which is located on the surface of the upper valve plate facing the hanging plate, and the first connecting plate is close to the edge of the upper valve plate;

[0012] The lower valve plate is equipped with a second connecting plate, which is located on the upper valve plate facing the hanging plate, and the second connecting plate is close to the edge of the lower valve plate;

[0013] The first connecting arm is rotatably connected to the first connecting plate; the second connecting arm is rotatably connected to the second connecting plate; the third connecting arm is connected to the lower end of the hanging plate through the thermoplastic slit.

[0014] The connecting rod is erected vertically and is located in front of the upper valve plate and the lower valve plate.

[0015] Furthermore, it also includes a first rotating shaft and a second rotating shaft;

[0016] The first and second rotating shafts are vertically opposite each other and extend in the left and right directions respectively; one end of the first rotating shaft and one end of the second rotating shaft are respectively installed on the left or right side of the inner wall of the valve body; the first rotating shaft and the second rotating shaft are respectively located near the rear opening of the valve body;

[0017] The upper valve plate is mounted on the outer circumferential surface of the first rotating shaft, and the lower valve plate is mounted on the outer circumferential surface of the second rotating shaft.

[0018] Preferably, the width of the upper valve plate or the lower valve plate in the front-rear direction is b;

[0019] Along the front-back direction, the distance between the first rotating shaft and the edge of the farthest end of the upper valve plate is a, or the distance between the second rotating shaft and the edge of the farthest end of the lower valve plate is a.

[0020] The a is greater than half of the b.

[0021] Furthermore, it also includes fire-retardant strips;

[0022] The fireproof and flame-retardant strip is installed on the inner wall surface of the valve body; the fireproof and flame-retardant strip is used to cover the gap between the edge of the upper valve plate or the lower valve plate in the closed state and the inner wall surface of the valve body, and the fireproof and flame-retardant strip is used to abut against the edge of the upper valve plate or the lower valve plate in the closed state.

[0023] The technical solution of the fireproof valve of this utility model has at least the following beneficial effects: no drive device is required. When the heat-fused sluice is melted due to heat, the connecting rod descends under the action of gravity, which can drive the upper valve plate and the lower valve plate to rotate and close the fireproof valve. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of a fireproof valve according to the present invention;

[0025] Figure 2 This is a cross-sectional structural diagram of an embodiment of the fireproof valve of this utility model in the open state;

[0026] Figure 3 This is a cross-sectional structural diagram of an embodiment of the fireproof valve of this utility model in the closed state;

[0027] Wherein: valve body 1; upper valve plate 2; lower valve plate 3; connecting rod 4; hanging plate 5; hot melt break 6; fireproof and flame-retardant strip 7; first rotating shaft 8; second rotating shaft 9; first connecting plate 21; second connecting plate 31; first connecting arm 41; second connecting arm 42; third connecting arm 43. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] A fireproof valve includes a valve body 1, a connecting rod 4, a hanging plate 5, and a heat-fused slit 6, as well as at least one pair of upper valve plates 2 and lower valve plates 3;

[0032] The upper end of the hanging plate 5 is fixed to the top surface of the inner wall of the valve body 1, the lower end of the hanging plate 5 extends downward, and the hanging plate 5 is disposed within the edge of the front opening of the valve body 1.

[0033] The upper valve plate 2 and the lower valve plate 3 are configured in a one-to-one correspondence; the left and right ends of the upper valve plate 2 or the left and right ends of the lower valve plate 3 are respectively rotatably mounted on the inner wall of the valve body 1.

[0034] When the lower end of the hanging plate 5 is connected to the middle of the connecting rod 4 through the thermosetting break piece 6, the upper valve plate 2 and the lower valve plate 3 are in the open state. The upper valve plate 2 and the lower valve plate 3 extend horizontally in the front-back direction, and the upper end and the lower end of the connecting rod 4 are rotatably connected to the front edge of the upper valve plate 2 and the front edge of the lower valve plate 3, respectively.

[0035] Figure 1 This is a schematic diagram of one embodiment of a fireproof valve according to the present invention, and is only intended to illustrate the structure of the protective valve. Figure 1 The fire valve shown is equipped with a pair of upper valve plates 2 and lower valve plates 3 in the open state, and a pair of upper valve plates 2 and lower valve plates 3 in the closed state. Figure 2 This is a cross-sectional structural diagram of an embodiment of the fireproof valve of this utility model in the open state. Figure 3 This is a cross-sectional structural diagram of an embodiment of the fireproof valve of this utility model in the closed state.

[0036] like Figure 1-3 The fireproof valve of this utility model, when a fire occurs, the heat-fused slit 6 (for example, the melting temperature can be set to 120℃) melts due to heat, causing the connection between the middle part of the connecting rod 4 and the lower end of the hanging plate 5 to break. The connecting rod 4 descends under the action of gravity, and the descending connecting rod 4 exerts a lever effect on the upper valve plate 2 and the lower valve plate 3, causing the upper valve plate 2 and the lower valve plate 3 to rotate. When the rotated upper valve plate 2 and lower valve plate 3 close, the fireproof valve closes.

[0037] Specifically, the connecting rod 4 is provided with a first connecting arm 41, a second connecting arm 42 and a third connecting arm 43;

[0038] The upper valve plate 2 is equipped with a first connecting plate 21, which is located on the surface of the upper valve plate 2 facing the hanging plate 5 and is close to the edge of the upper valve plate 2.

[0039] The lower valve plate 3 is equipped with a second connecting plate 31, which is located on the upper valve plate 2 facing the hanging plate 5, and the second connecting plate 31 is close to the edge of the lower valve plate 3.

[0040] The first connecting arm 41 is rotatably connected to the first connecting plate 21; the second connecting arm 42 is rotatably connected to the second connecting plate 31; the third connecting arm 43 is connected to the lower end of the hanging plate 5 through the thermosetting break 6.

[0041] The connecting rod 4 is set vertically and is located in front of the upper valve plate 2 and the lower valve plate 3.

[0042] like Figure 1-3 As shown, by placing the connecting rod 4 in front of the upper valve plate 2 and the lower valve plate 3 and keeping the connecting rod 4 upright, the lever effect generated by the descending connecting rod 4 on the upper valve plate 2 and the lower valve plate 3 can be more effective. The rotating connection structure between the first connecting arm 41 and the second connecting arm 42 and the connecting rod 4 can give the upper valve plate 2 and the lower valve plate 3 good rotational flexibility.

[0043] Furthermore, it also includes a first rotating shaft 8 and a second rotating shaft 9;

[0044] The first rotating shaft 8 and the second rotating shaft 9 are vertically opposite each other and extend in the left and right directions respectively; one end of the first rotating shaft 8 and one end of the second rotating shaft 9 are respectively installed on the left or right side of the inner wall of the valve body 1; the first rotating shaft 8 and the second rotating shaft 9 are respectively located near the rear opening of the valve body 1.

[0045] The upper valve plate 2 is mounted on the outer circumferential surface of the first rotating shaft 8, and the lower valve plate 3 is mounted on the outer circumferential surface of the second rotating shaft 9.

[0046] like Figure 1-3 As shown, the first rotating shaft 8 and the second rotating shaft 9 are positioned near the rear end opening of the valve body 1, which allows the descending connecting rod 4 to exert a greater torque on the lever action of the upper valve plate 2 and the lower valve plate 3. It also allows the weight of the upper valve plate 2 and the lower valve plate 3 to generate a downward rotating gravity, further improving the efficiency of the upper valve plate 2 and the lower valve plate 3 in closing the fireproof valve.

[0047] Preferably, the width of the upper valve plate 2 or the lower valve plate 3 in the front-rear direction is b;

[0048] Along the front-back direction, the distance between the first rotating shaft 8 and the edge of the farthest end of the upper valve plate 2 is a, or the distance between the second rotating shaft 9 and the edge of the farthest end of the lower valve plate 3 is a.

[0049] The a is greater than half of the b.

[0050] like Figure 2 As shown, this arrangement allows the center of gravity of the upper valve plate 2 to be located between the first rotating shaft 8 and the hanging plate 5, and the center of gravity of the lower valve plate 3 to be located between the second rotating shaft 9 and the hanging plate 5, thereby allowing the weight of the upper valve plate 2 and the lower valve plate 3 to generate a downward rotating force, which is beneficial to ensuring the closing efficiency of the fireproof valve.

[0051] Furthermore, it also includes fire-retardant strip 7;

[0052] The fireproof and flame-retardant strip 7 is installed on the inner wall surface of the valve body 1; the fireproof and flame-retardant strip 7 is used to cover the gap between the edge of the upper valve plate 2 or the lower valve plate 3 in the closed state and the inner wall surface of the valve body 1, and the fireproof and flame-retardant strip 7 is used to abut against the edge of the upper valve plate 2 or the lower valve plate 3 in the closed state.

[0053] like Figure 3 The fire-retardant strip 7 shown can reduce the seepage of smoke from the gap between the upper valve plate 2 or lower valve plate 3 and the inner wall of the valve body 1 during a fire.

[0054] In summary, such as Figure 1-3 In the embodiment of the present invention shown, the fireproof valve does not require a drive device. When the heat-fused piece 6 melts due to heat, the connecting rod 4 descends under the action of gravity, which can drive the upper valve plate 2 and the lower valve plate 3 to rotate and close the fireproof valve.

[0055] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A fire damper valve, characterized in that It includes a valve body, connecting rod, mounting plate and thermoplastic diaphragm, and at least one pair of upper and lower valve plates; The upper end of the hanging plate is fixed to the top surface of the inner wall of the valve body, the lower end of the hanging plate extends downward, and the hanging plate is disposed within the edge of the front opening of the valve body. The upper valve plate and the lower valve plate are configured in a one-to-one correspondence; the left and right ends of the upper valve plate or the left and right ends of the lower valve plate are rotatably mounted on the inner wall of the valve body. When the lower end of the hanging plate is connected to the middle of the connecting rod through the thermofused slit, the upper valve plate and the lower valve plate are in the open state. The upper valve plate and the lower valve plate extend horizontally in the front-back direction, and the upper end and the lower end of the connecting rod are rotatably connected to the front edge of the upper valve plate and the front edge of the lower valve plate, respectively.

2. The fire damper according to claim 1, characterized in that The connecting rod is provided with a first connecting arm, a second connecting arm and a third connecting arm; The upper valve plate is equipped with a first connecting plate, which is located on the surface of the upper valve plate facing the hanging plate, and the first connecting plate is close to the edge of the upper valve plate; The lower valve plate is equipped with a second connecting plate, which is located on the upper valve plate facing the hanging plate, and the second connecting plate is close to the edge of the lower valve plate; The first connecting arm is rotatably connected to the first connecting plate; the second connecting arm is rotatably connected to the second connecting plate; the third connecting arm is connected to the lower end of the hanging plate through the thermoplastic slit. The connecting rod is erected vertically and is located in front of the upper valve plate and the lower valve plate.

3. The fire damper according to claim 2, characterized in that It also includes a first rotating shaft and a second rotating shaft; The first and second rotating shafts are vertically opposite each other and extend in the left and right directions respectively; one end of the first rotating shaft and one end of the second rotating shaft are respectively installed on the left or right side of the inner wall of the valve body; the first rotating shaft and the second rotating shaft are respectively located near the rear opening of the valve body; The upper valve plate is mounted on the outer circumferential surface of the first rotating shaft, and the lower valve plate is mounted on the outer circumferential surface of the second rotating shaft.

4. The fire damper door according to claim 3, characterized in that The width of the upper valve plate or the lower valve plate in the front-rear direction is b; Along the front-back direction, the distance between the first rotating shaft and the edge of the farthest end of the upper valve plate is a, or the distance between the second rotating shaft and the edge of the farthest end of the lower valve plate is a. The a is greater than half of the b.

5. The fire damper of claim 1, wherein, It also includes fire-retardant strips; The fireproof and flame-retardant strip is installed on the inner wall surface of the valve body; the fireproof and flame-retardant strip is used to cover the gap between the edge of the upper valve plate or the lower valve plate in the closed state and the inner wall surface of the valve body, and the fireproof and flame-retardant strip is used to abut against the edge of the upper valve plate or the lower valve plate in the closed state.

Images