Pneumatic silencing fireproof air brake

Abstract

The utility model discloses a pneumatic silencing fireproof air brake which comprises a silencing barrel, a main shaft is rotatably connected to the interior of the silencing barrel in the radial direction, air brake blades are arranged on the main shaft, a pneumatic executing mechanism is arranged on the outer side wall of the silencing barrel, one end of the pneumatic executing mechanism is fixedly connected with the main shaft, and the other end of the pneumatic executing mechanism is fixedly connected with the silencing barrel. A silencing layer is arranged in the silencing barrel; the silencing barrel body is of a double-layer barrel body structure, and the silencing layer is arranged between the two layers of barrel bodies of the silencing barrel body; the silencing layer is cylindrical, and silencing materials in the silencing layer are arranged in a snakelike mode from top to bottom. According to the pneumatic silencing fireproof air brake, the silencing function and the fireproof function are integrated, cost is saved, installation space is saved, and installation workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship fire protection, in particular to a pneumatic sound-absorbing fireproof damper. Background Art

[0002] Fire dampers and silencers are two devices with different functions. According to the specifications, both are widely used in ship ventilation systems. Fire dampers are used to cut off ventilation ducts when a ship catches fire, stop the spread of flames, and prevent the fire from expanding. They are mature fire prevention devices and are available in pneumatic and electric types. The power source of pneumatic fire dampers comes from 4~7bar compressed air. Silencers are used to reduce the noise of ventilation duct fans, thereby reducing environmental noise and improving ship comfort. They are mature silencer devices.

[0003] Fire dampers and fan silencers usually need to be installed on ventilation ducts. They are used in large quantities, are costly, and require a lot of construction. Both have certain sizes and occupy a large space, and often face difficulties in selecting and arranging installation locations, which may involve special requirements and modifications to the structure. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pneumatic sound-absorbing fireproof damper, which combines the sound-absorbing and fireproof functions into one, saves costs, saves installation space, and reduces installation workload.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A pneumatic silencer fire damper comprises a silencer cylinder, a main shaft rotatably connected in the radial direction inside the silencer cylinder, damper blades are arranged on the main shaft, a pneumatic actuator is arranged on the outer wall of the silencer cylinder, one end of the pneumatic actuator is fixedly connected to the main shaft, and a silencer layer is arranged on the inside of the silencer cylinder.

[0007] Furthermore, the silencer cylinder is a double-layer cylinder structure, the silencer layer is arranged between the two layers of the silencer cylinder, and annular sealing plates are arranged above and below the silencer layer.

[0008] Furthermore, the shape of the sound-absorbing layer is cylindrical, and the sound-absorbing material in the sound-absorbing layer is arranged in a serpentine shape from top to bottom.

[0009] Furthermore, the wind brake blade is a multi-blade type or a single-blade type.

[0010] Furthermore, the wind damper blade is located in the middle of the silencer cylinder.

[0011] Furthermore, the pneumatic actuator is fixed to the outer wall of the silencer cylinder through a supporting mechanism, and the supporting mechanism is a base welded to the outer wall of the silencer cylinder, and the pneumatic actuator is connected to the base through bolts.

[0012] The pneumatic silencer fire damper of the utility model has both fire prevention and silencer functions in one. The blades and pneumatic actuator of the fire damper are assembled into one body by using the silencer cylinder, and the fire damper and silencer are combined, which saves cost and reduces the external size. Two devices with different functions only occupy the space size of one device. The material of the fire damper cylinder is saved, and the total weight of the device is reduced. The installation and construction are simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the pneumatic sound-absorbing fire damper described in the utility model;

[0014] Figure 2 It is a top view of the pneumatic sound-absorbing fireproof damper described in the utility model.

[0015] Among them, 1-silencer cylinder, 2-pneumatic actuator, 3-wind damper blade, 4-silencer layer, 5-main shaft, 6-ring sealing plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1 As shown, a pneumatic sound-absorbing fire damper comprises a sound-absorbing cylinder body 1, which is rotatably connected to a main shaft in the radial direction inside the sound-absorbing cylinder body 1, and a damper blade 3 is arranged on the main shaft 5, and the damper blade 3 is of a multi-blade type or a single-blade type. A pneumatic actuator 2 is arranged on the outer wall of the sound-absorbing cylinder body 1, and one end of the pneumatic actuator 2 is fixedly connected to the main shaft, and a sound-absorbing layer 4 is arranged inside the sound-absorbing cylinder body 1. The sound-absorbing cylinder body 1 is a double-layer cylinder structure, and the sound-absorbing layer 4 is arranged between the two layers of the sound-absorbing cylinder body 1. The shape of the sound-absorbing layer 4 is cylindrical, and the sound-absorbing material in the sound-absorbing layer 4 is arranged in a serpentine shape from top to bottom; an annular sealing plate 6 is arranged above and below the sound-absorbing layer; the damper blade 3 is located in the middle part of the sound-absorbing cylinder body 1; the pneumatic actuator 2 is fixed to the outer wall of the sound-absorbing cylinder body 1 through a supporting mechanism, and the supporting mechanism is a base welded on the outer wall of the sound-absorbing cylinder body 1, and the pneumatic actuator 2 is connected to the base through bolts.

[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic sound-absorbing fire damper, characterized in that: It includes a silencer cylinder body, which is rotatably connected to a main shaft in the radial direction inside the silencer cylinder body, on which a damper blade is arranged, and on the outer wall of the silencer cylinder body, a pneumatic actuator is arranged, one end of the pneumatic actuator is fixedly connected to the main shaft, and a silencer layer is arranged inside the silencer cylinder body.

2. A pneumatic sound-absorbing fire damper according to claim 1, characterized in that: The silencer cylinder is a double-layer cylinder structure, the silencer layer is arranged between the two layers of the silencer cylinder, and annular sealing plates are arranged above and below the silencer layer.

3. A pneumatic sound-absorbing fire damper according to claim 2, characterized in that: The shape of the sound-absorbing layer is cylindrical. The sound-absorbing materials in the sound-absorbing layer are arranged in a serpentine shape from top to bottom.

4. The pneumatic sound-absorbing fire damper according to claim 1 is characterized in that: The wind brake blades are of multi-blade type or single-blade type.

5. The pneumatic sound-absorbing fire damper according to claim 1 is characterized in that: The wind damper blade is located in the middle of the silencer cylinder.

6. The pneumatic sound-absorbing fire damper according to claim 1, characterized in that: The pneumatic actuator is fixed to the outer wall of the silencer cylinder through a supporting mechanism. The supporting mechanism is a base welded to the outer wall of the silencer cylinder. The pneumatic actuator is connected to the base through bolts.

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