Diversion smoke exhaust fireproof valve

Abstract

A flow guide smoke exhaust fireproof valve comprises a shell. An inner cavity of the shell comprises two groups of inner pipe channels and a group of flow guide pipelines, the two sides of the flow guide pipelines are integrally connected with the inner pipe channels, and smoke detectors are mounted on the side edges of the inner pipe channels; an inner pipe is sleeved with the inner pipe channel, a second valve element is installed at the tail end of the inner pipe along the pipeline, and the front pipeline and the rear pipeline of the inner pipe are in butt joint with the ventilation pipeline. A second flow guide opening formed in the side edge of the flow guide pipeline communicates with a first flow guide opening, and the first flow guide opening is formed in the pipe wall of the inner side of the inner pipe. A first valve element is installed at the tail end of the flow guide pipeline. According to the fireproof valve structure, sealing and smoke flow guiding are completed through the two sets of block-shaped valve elements. According to the fireproof valve, the length of the valve element is reduced through the two sets of internal pipelines, and therefore the probability that the long valve element is bent due to a fault caused by gravity or local structure looseness in the high-temperature or long-term use state is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire dampers, and in particular relates to a diversion and smoke exhaust fire damper. Background Art

[0002] A smoke exhaust fire damper is a fire protection component typically installed in the ductwork of a mechanical smoke exhaust system. Under normal circumstances, this valve remains open to allow ventilation and smoke exhaust. However, in the event of a fire, when the smoke temperature in the exhaust duct reaches 280°C, the valve automatically closes to prevent the spread of fire and smoke. Furthermore, it must meet smoke leakage and fire resistance integrity requirements within a certain timeframe.

[0003] As a crucial component of firefighting equipment, smoke and fire dampers play a vital role in ensuring building fire safety. However, they also have drawbacks and potential problems. While smoke and fire dampers are designed to maintain excellent airtightness, in practice, errors in manufacturing and installation can lead to increased air leakage. This can affect the efficiency of the smoke exhaust system and, in some cases, even cause the fire to spread.

[0004] Since the conventional smoke barrier structure adopts a multi-group sheet structure, there will be sealing problems such as local sealing leakage during long-term use. Therefore, in order to solve this technical problem, the present application adopts a fire damper structure that completes sealing and smoke diversion through two groups of block valve cores. The fire damper reduces the length of the valve core through the internal double-group pipeline, thereby reducing the probability of faults or bending of the longer valve core due to gravity or local structural relaxation under high temperature or long-term use. The internal tube structure of the double smoke duct can effectively cooperate with the smoke detector drive and complete the blocking process of the upper and lower dislocated valve cores. At the same time, the smoke is drained into the central drainage duct to complete the effective smoke exhaust process. Summary of the Invention

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A diversion smoke exhaust fire damper comprises a shell; the inner cavity of the shell comprises two sets of inner tube channels and a set of diversion pipes, the inner tube channels are integrally connected to both sides of the diversion pipes, and smoke detectors are installed on the sides of the inner tube channels;

[0007] An inner tube is installed in the inner tube channel, a second valve core is installed along the end of the inner tube, and the front and rear pipelines of the inner tube are connected to the ventilation pipeline;

[0008] The second guide port opened on the side of the guide pipe is connected to the first guide port, and the first guide port is opened on the inner wall of the inner tube;

[0009] A first valve core is installed at the end of the diversion pipeline.

[0010] Furthermore, the driving switch of the smoke detector extends along the track, and the extended driving switch is transmission-connected to the outer wall of the inner tube;

[0011] The track is arranged on the end surface of the side wall of the shell.

[0012] Furthermore, the first valve core and the second valve core are in an up-and-down staggered installation structure, and the first valve core and the second valve core are in a selective sealing contact structure.

[0013] Furthermore, a smoke outlet is provided at the top of the guide pipe, and an extension channel is installed at the top of the smoke outlet through the base.

[0014] Furthermore, a cover net is installed on the outer shell along the inlet of the inner tube.

[0015] Furthermore, the shell is provided with a mounting end head at a plug position along the main end face of the guide pipe, and the mounting end head is limitedly docked with the ventilation pipe.

[0016] The beneficial effects of the utility model are:

[0017] Compared to existing technologies, this application utilizes a fire damper structure that utilizes two sets of block-shaped valve cores for sealing and smoke diversion. This fire damper utilizes dual internal piping to reduce valve core length, thereby reducing the risk of longer valve cores breaking or bending due to gravity or local structural relaxation under high temperatures or prolonged use. The internal pipe structure of the dual smoke ducts effectively cooperates with smoke detectors to block the upper and lower offset valve cores. This also effectively diverts smoke into the central drainage duct for efficient smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an appearance diagram of a smoke diversion and exhaust fire damper of the utility model.

[0019] Figure 2 This is a schematic diagram of the pipeline structure of a smoke diversion and exhaust fire damper of the utility model.

[0020] Figure 3 This is a structural schematic diagram of a smoke exhaust fire damper pipe diversion system of the utility model.

[0021] List of Figure Symbols:

[0022] 1 is the outer shell, 2 is the cover, 3 is the mounting end, 4 is the smoke detector, 5 is the base, 6 is the extension channel, 7 is the plug, 8 is the diversion pipeline, 9 is the inner tube, 10 is the smoke outlet, 11 is the track, 12 is the first valve core, 13 is the second valve core, 14 is the first diversion port, and 15 is the second diversion port. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 1 、 Figure 2 and Figure 3 As shown, a smoke diversion and exhaust fire damper includes a shell; the internal cavity of the shell 1 includes two groups of inner tube channels and a group of diversion pipes 8, the inner tube channels are integrally connected on both sides of the diversion pipes 8, and smoke detectors 4 are installed on the sides of the inner tube channels; wherein, the shell 1 serves as the first layer of protection structure, which can ensure that the internal channels remain structurally intact during fire or normal conditions. The channels of the diversion pipes 8 cooperate with the inner tube channels on the left and right sides to complete the smoke diversion, ensuring the consistency of the airflow diversion direction and avoiding the influence of inconsistent airflow direction on the smoke diversion. The smoke detector 4 is a confirmation switch sensing device for the fire.

[0025] An inner tube 9 is installed in the inner tube channel, and a second valve core 13 is installed along the end of the inner tube 9. The front and rear pipelines of the inner tube 9 are connected to the ventilation pipeline; wherein, the second valve core 13 is a semi-valve core structure, which can retain a normal ventilation gap.

[0026] The second diversion port 15 formed on the side of the diversion pipe 8 communicates with the first diversion port 15 formed on the inner wall of the inner tube 9. The second diversion port 15 and the first diversion port 15 serve as airflow ports for connecting the inner tube 9 and the diversion pipe 8 during a fire. In the absence of a fire, the second diversion port 15 and the first diversion port 15 are disconnected.

[0027] A first valve core 12 is installed at the end of the diversion pipe 8. The first valve core 12 and the second valve core 13 are installed in an alternating arrangement, forming a selectively sealed contact structure. The first valve core 12 is a valve body structure that complements the normal ventilation gap of the second valve core 13.

[0028] like Figure 1 、 Figure 2 and Figure 3 As shown, the driving switch of the smoke detector 4 extends along the track 11, and the extended driving switch is transmission-connected to the outer wall of the inner tube 9; wherein, the smoke detector 4 can drive the smoke track 11 of the inner tube 9 to perform translational movement through the driving switch, thereby driving the second valve core 13 of the inner tube 9 to close contact with the first valve core 12.

[0029] The track 11 is provided on the end surface of the side wall of the housing 1 .

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, a smoke outlet 10 is provided on the top of the guide pipe 8, and an extension channel 6 is installed on the top of the smoke outlet 10 through the base 5. The extension channel 6 installed at the position of the smoke outlet 10 discharges the fire smoke into a designated smoke storage container.

[0031] like Figure 1 、 Figure 2 and Figure 3 As shown, the shell 1 is provided with a cover net 2 along the inlet of the inner tube 9. The cover net 2 can prevent large particles of impurities from entering the fire damper.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, the housing 1 is provided with a mounting end 3 at the position of the plug 7 along the main end face of the guide pipe 8, and the mounting end 3 is limitedly connected to the ventilation pipe. The mounting end 3 facilitates subsequent staff to complete the disassembly and assembly process.

[0033] It should be noted that the above content only illustrates the technical idea of the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, they can make several improvements and modifications without departing from the principles of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A smoke exhaust fire damper, comprising a housing; characterized by: The inner cavity of the housing (1) includes two groups of inner tube channels and a group of guide pipes (8), the inner tube channels are integrally connected to both sides of the guide pipes (8), and smoke detectors (4) are installed on the sides of the inner tube channels; An inner tube (9) is sleeved in the inner tube channel, a second valve core (13) is installed along the end of the inner tube (9), and the front and rear pipelines of the inner tube (9) are connected to the ventilation pipeline; The second guide port (15) provided on the side of the guide pipe (8) is in communication with the first guide port (15), and the first guide port (15) is provided on the inner wall of the inner tube (9); A first valve core (12) is installed at the end of the diversion pipeline (8).

2. The smoke diversion and exhaust fire damper according to claim 1, characterized in that: The driving switch of the smoke detector (4) extends along the track (11), and the extended driving switch is in transmission connection with the outer wall of the inner tube (9); The track (11) is provided on the end surface of the side wall of the housing (1).

3. The smoke diversion and exhaust fire damper according to claim 1, characterized in that: The first valve core (12) and the second valve core (13) are in an up-and-down staggered installation structure, and the first valve core (12) and the second valve core (13) are in a selective sealing contact structure.

4. The smoke diversion and exhaust fire damper according to claim 1, characterized in that: A smoke outlet (10) is provided at the top of the guide pipe (8), and an extension channel (6) is installed at the top of the smoke outlet (10) through the base (5).

5. The smoke diversion and exhaust fire damper according to claim 1, characterized in that: The outer shell (1) is provided with a cover net (2) along the inlet of the inner tube (9).

6. The smoke diversion and exhaust fire damper according to claim 1, characterized in that: The housing (1) is provided with a mounting end head (3) at the position of the plug (7) along the main viewing end face of the guide pipe (8), and the mounting end head (3) is limitedly docked with the ventilation pipe.

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