Multi-safety protection fireproof valve

Abstract

The utility model belongs to the technical field of fireproof valves, and particularly relates to a multiple safety protection fireproof valve which comprises a valve body and a blade rotationally installed in the valve body, a ring seat for supporting the blade to rotate is arranged on the inner wall of the valve body, and a sealing assembly is arranged on the inner wall of the ring seat in the radial direction. The sealing assembly comprises an annular air bag and an expansion mechanism enabling the annular air bag to expand, when the annular air bag expands, the annular air bag is used for filling and sealing a gap between the annular seat and the blades, the expansion mechanism comprises a shell and a liquid storage bin formed in the shell, and a liquid supply pipe is communicated between the top of the liquid storage bin and the annular air bag; the expansion mechanism and the annular air bag are additionally arranged, and after the blades are closed, the gap between the ring seat and the blades is filled with the expanded annular air bag, so that the sealing effect of equipment is improved, and gas leakage in the gap between the ring seat and the blades is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of fire damper technology, specifically relating to a fire damper with multiple safety protections. Background Technology

[0002] The main components of a fire damper include the valve body, valve cover, valve wing, valve seat, spring, drive rod, fusible metal, and blades. Among them, the valve body and valve cover are the main load-bearing structures of the fire damper, the valve wing and valve seat are the key components, and the spring and drive rod are auxiliary components.

[0003] When the existing blades close in the valve body, there will be a gap between the blades and the valve body. High-temperature gas will escape outward through the gaps, making it impossible to completely isolate the smoke, thus affecting the smoke isolation effect of the fire damper. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layered safety protection fire damper to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-safety fireproof valve, comprising: a valve body and a blade rotatably installed in the valve body, wherein an annular seat supporting the rotation of the blade is provided on the inner wall of the valve body, and a sealing assembly is provided on the inner wall of the annular seat in the radial direction, wherein the sealing assembly comprises an annular airbag and an expansion mechanism for inflating the annular airbag, wherein when the annular airbag is inflated, it is used to fill and seal the gap between the annular seat and the blade.

[0006] Preferably, the expansion mechanism includes a housing and a liquid storage chamber disposed in the housing. A liquid supply pipe is connected between the top of the liquid storage chamber and the annular air bladder. The liquid storage chamber is filled with coolant, and the liquid storage chamber is provided with an injection mechanism for injecting coolant into the annular air bladder.

[0007] Preferably, the injection mechanism includes an air pump and a piston, the piston is disposed below the coolant, and a gas storage chamber for storing gas is formed below the piston, and a gas supply pipe for ventilation is provided between the air pump and the gas storage chamber.

[0008] Preferably, the inner wall of the ring seat has a radial groove, and the annular airbag is housed in the groove.

[0009] Preferably, the annular airbag is further wrapped with a high-temperature resistant packaging material for high-temperature resistance.

[0010] Preferably, a rotating shaft is provided on the inner wall of the ring seat along the diametrical direction, the blade is disposed on the rotating shaft, and an actuator is provided on the outside of the valve body to drive the rotating shaft to rotate. The rotating shaft, based on rotation, causes the blade to adjust the valve body to open or close.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] (1) By adding an expansion mechanism and an annular airbag, the present invention fills the gap between the ring seat and the blade with the expanded annular airbag after the blade is closed, thereby improving the sealing effect of the equipment and preventing gas leakage from the gap between the ring seat and the blade.

[0013] (2) By adding an injection mechanism and coolant, this utility model can make the annular airbag expand with coolant after the blade is closed, and at the same time make the annular airbag resistant to high temperature, thereby improving the service life of the annular airbag.

[0014] (3) This utility model uses a piston, an air supply pipe and an air pump to facilitate the automatic entry of coolant in the storage tank into the annular air bag. Attached Figure Description

[0015] Figure 1 This is a side view of the present invention;

[0016] Figure 2 This is a first sectional view of the present invention;

[0017] Figure 3 This is a second sectional view of the present invention;

[0018] Figure 4 This is a partial cross-sectional view of the annular airbag of this utility model;

[0019] In the diagram: 1. Actuator; 2. Shaft; 3. Ring seat; 4. Housing; 5. Air pump; 6. Valve body; 7. Blade; 8. High-temperature resistant packaging material; 9. Ring groove; 10. Annular air bladder; 11. Liquid supply pipe; 12. Liquid storage tank; 13. Piston; 14. Air storage tank; 15. Air supply pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] refer to Figure 1-3As shown, the present invention provides a multi-safety fireproof valve, comprising: a valve body 6 and a blade 7 rotatably installed in the valve body 6. The inner wall of the valve body 6 is provided with a ring seat 3 to support the rotation of the blade 7. The inner wall of the ring seat 3 is provided with a sealing assembly in the radial direction. The sealing assembly includes an annular airbag 10 and an expansion mechanism for inflating the annular airbag 10. When the annular airbag 10 is inflated, it is used to fill and seal the gap between the ring seat 3 and the blade 7.

[0022] Combination Figure 1 and Figure 3 As shown, a rotating shaft 2 is provided on the inner wall of the ring seat 3 along the diameter direction, and a blade 7 is provided on the rotating shaft 2. An actuator 1 that drives the rotating shaft 2 to rotate is provided on the outside of the valve body 6. The rotating shaft 2 rotates so that the blade 7 can adjust the valve body 6 to open or close.

[0023] As described above, using the valve body 6, blade 7, ring seat 3, and sealing assembly provided by this utility model, the blade 7 is rotatably installed in the valve body 6 via the rotating shaft 2 and the ring seat 3. The temperature fuse is not shown in the figure. When the temperature fuse contacts the high temperature and melts, the actuator 1 is activated, and the blade 7 is driven to close in the valve body 6 via the rotating shaft 2. At this time, the expansion mechanism is activated, allowing the annular air bag 10 to expand and fill the gap between the ring seat 3 and the blade 7, thus preventing gas leakage from the valve body 6.

[0024] Furthermore, to avoid interference between the annular airbag 10 and the rotation of the blade 7, refer to Figure 2-3 As shown, an annular groove 9 is formed radially on the inner wall of the annular seat 3, and the annular airbag 10 is housed in the annular groove 9. The annular airbag 10 is embedded and housed in the annular seat 3 through the annular groove 9, so as to avoid the annular airbag 10 affecting the opening and closing of the blade 7 when it is not in use.

[0025] Furthermore, to prevent the annular airbag 10 from being burned by high-temperature gas, refer to Figure 4 As shown, the annular airbag 10 is also wrapped with a high-temperature resistant packaging material 8. The high-temperature resistant packaging material 8 improves the high-temperature resistance of the annular airbag 10 and prevents the annular airbag 10 from being burned by high-temperature gases.

[0026] In this utility model, combined with Figure 1-2 As shown, the expansion mechanism of this embodiment includes a housing 4 and a liquid storage chamber 12 opened in the housing 4. A liquid supply pipe 11 is connected between the top of the liquid storage chamber 12 and the annular airbag 10. The liquid storage chamber 12 is filled with coolant, and the liquid storage chamber 12 is provided with an injection mechanism for injecting coolant into the annular airbag 10.

[0027] As described above, using the expansion mechanism provided by this utility model, coolant is stored in the housing 4 through the liquid storage tank 12. When the blade 7 is closed in the valve body 6, the coolant in the liquid storage tank 12 is pushed into the annular airbag 10 through the liquid supply pipe 11 by the injection mechanism, thereby causing the annular airbag 10 to expand and fill the gap between the ring seat 3 and the blade 7. At the same time, since the annular airbag 10 is filled with coolant, the annular airbag 10 can be prevented from being damaged by high temperature explosion when high temperature gas comes into contact with the annular airbag 10.

[0028] Furthermore, to facilitate the injection of coolant into the annular airbag 10, refer to... Figure 2 As shown, the injection mechanism includes an air pump 5 and a piston 13. The piston 13 is positioned below the coolant, and a gas storage chamber 14 for storing gas is formed below the piston 13. A gas supply pipe 15 for ventilation is provided between the air pump 5 and the gas storage chamber 14. When the air pump 5 is started, external gas is introduced into the gas storage chamber 14 through the gas supply pipe 15, thereby driving the piston 13 to move upward, which in turn drives the coolant to rise and enter the annular air bladder 10 through the liquid supply pipe 11. At this time, the annular air bladder 10 inflates, which facilitates sealing the gap between the annular seat 3 and the blade 7.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-safety fire damper, characterized in that, include: The valve body (6) and the blade (7) are rotatably installed in the valve body (6). The inner wall of the valve body (6) is provided with a ring seat (3) to support the rotation of the blade (7). The inner wall of the ring seat (3) is provided with a sealing assembly in the radial direction. The sealing assembly includes an annular airbag (10) and an expansion mechanism for inflating the annular airbag (10). When the annular airbag (10) is inflated, it is used to fill and seal the gap between the ring seat (3) and the blade (7).

2. The multi-safety fire damper according to claim 1, characterized in that: The expansion mechanism includes a housing (4) and a liquid storage chamber (12) opened in the housing (4). The top of the liquid storage chamber (12) is connected to the annular airbag (10) by a liquid supply pipe (11). The liquid storage chamber (12) is filled with coolant, and the liquid storage chamber (12) is provided with an injection mechanism for injecting coolant into the annular airbag (10).

3. The multi-safety fire damper according to claim 2, characterized in that: The injection mechanism includes an air pump (5) and a piston (13). The piston (13) is located below the coolant, and a gas storage chamber (14) for storing gas is formed below the piston (13). A gas supply pipe (15) for ventilation is provided between the air pump (5) and the gas storage chamber (14).

4. The multi-safety fire damper according to claim 1, characterized in that: The inner wall of the ring seat (3) is provided with a ring groove (9) in the radial direction, and the annular airbag (10) is housed in the ring groove (9).

5. A multi-safety fire damper according to claim 1, characterized in that: The annular airbag (10) is also wrapped with a high-temperature resistant packaging material (8) for high-temperature resistance.

6. A multi-safety fire damper according to claim 1, characterized in that: The inner wall of the ring seat (3) is provided with a rotating shaft (2) that rotates along the diameter direction. The blade (7) is set on the rotating shaft (2). The valve body (6) is provided with an actuator (1) that drives the rotating shaft (2) to rotate. The rotating shaft (2) rotates so that the blade (7) adjusts the valve body (6) to open and close.

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