Air port fireproof valve for ventilation system

Abstract

The tuyere fireproof valve for the ventilation system comprises a fireproof valve body and a connecting frame, a limiting groove is formed in the outer surface of the connecting frame, a limiting plate is slidably connected into the limiting groove, a threaded rod is in threaded connection with the outer surface of the limiting plate, a rotating handle is fixedly installed at one end of the threaded rod, and a clamping sleeve is installed on the outer surface of the threaded rod in a sleeved mode. According to the fireproof valve, the fireproof valve body and the ventilation pipeline are connected through the connecting frames, the threaded rods are rotated to drive the limiting plates to move in the limiting grooves according to the different sizes and widths of the ventilation pipelines, the limiting plates are attached to the outer surfaces of the ventilation pipelines, and the application range is wider; according to the fireproof valve, the sliding groove is formed in the fireproof valve body, the filter screen is slidably connected into the sliding groove, the fixing bolt is screwed to be loosened, then the handle is pulled up to drive the filter screen to slide out, and the problem that the filter screen needs to be replaced or is troublesome to maintain after being used for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire valve equipment, in particular to an air outlet fire damper for a ventilation system. Background Art

[0002] Fire damper, normally open, closed at 70℃ or 280℃, generally installed at the place where the air duct passes through the firewall and the structural deformation joint, plays a role in fire control, and can be set to output electrical signals. When the temperature exceeds 70℃ or 280℃, the valve closes and the linked supply (supplement) fan is closed. Its function is: when the smoke temperature reaches 280℃, people have basically been evacuated, and smoke exhaust is of no practical significance. At this time, the smoke is already filled with fire, and the valve automatically closes to prevent the fire from spreading.

[0003] The existing fire dampers are composed of a valve body and an actuator, and are connected to the ventilation duct by fixing bolts. However, due to the different sizes and widths of the ventilation ducts, it is necessary to find a suitable fire damper, which limits its use. In addition, during the smoke exhaust process of the fire damper, a large amount of dust will be attached to the smoke. The existing fire dampers generally use some filtering mechanisms to filter the dust. However, after long-term use, the filtering mechanism must be checked and cleaned. However, the existing fire damper and filtering mechanism are integrated, which is troublesome to disassemble and requires the use of external tools for disassembly and maintenance. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, due to the different sizes and widths of ventilation ducts, it is necessary to find suitable fire dampers, which limits the use of the ventilation ducts. In addition, during the smoke exhaust process of the fire dampers, a large amount of dust will be included in the smoke. The existing fire dampers generally use some filtering mechanisms to filter the dust. However, after long-term use, the filtering mechanisms must be checked and cleaned. However, the existing fire dampers and filtering mechanisms are integrated and are troublesome to disassemble, and external tools are required for disassembly and maintenance. The proposed ventilation system uses an air outlet fire damper.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air outlet fire damper for a ventilation system comprises a fire damper body and a connecting frame, wherein a limit groove is arranged on the outer surface of the connecting frame, a limit plate is slidably connected in the limit groove, a threaded rod is threadedly connected to the outer surface of the limit plate, a rotating handle is fixedly installed at one end of the threaded rod, a ferrule is sleeved on the outer surface of the threaded rod, and the connecting frame is sleeved on both ends of the ferrule.

[0007] Preferably, a slide groove is provided on the top of the fire damper body, a filter screen is slidably connected in the slide groove, and a handle is fixedly installed on the top of the filter screen.

[0008] Preferably, a fixing plate is fixedly mounted on the outer surface of the handle, a fixing bolt is threadedly connected to the top of the fixing plate, and one end of the fixing bolt is fitted with the top of the fire damper body.

[0009] Preferably, bolts are threadedly connected to the outer surfaces of both ends of the ferrule, and the ferrule is threadedly connected to the connecting frame by the bolts.

[0010] Preferably, there are four limiting grooves, which are distributed on the outer surface around the connecting frame.

[0011] Preferably, a smoke sensor is arranged on the top of the fire damper body.

[0012] The utility model has the following beneficial effects:

[0013] The utility model connects the fire damper body and the ventilation duct by arranging a connecting frame. According to the different sizes and widths of the ventilation duct, the limit plate is driven to move in the limit groove by rotating the threaded rod, so that the limit plate fits with the outer surface of the ventilation duct, and the application range is wider.

[0014] The utility model provides a slide groove on the fire damper body, in which a filter is slidably connected, which is loosened by turning a fixing bolt, and then the filter is driven out by pulling up a handle, thereby solving the problem of troublesome replacement or repair of the filter after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the air outlet fire damper for the ventilation system proposed by the utility model;

[0016] Figure 2 This is a rear structural schematic diagram of the air outlet fire damper for the ventilation system proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fire damper body of the air outlet fire damper for the ventilation system proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the connecting frame structure of the air outlet fire damper for the ventilation system proposed by the utility model.

[0019] In the figure: 1. Fire damper body; 2. Connecting frame; 3. Limiting groove; 4. Limiting plate; 5. Threaded rod; 6. Turning handle; 7. Clamp; 8. Filter; 9. Handle; 10. Fixing plate; 11. Fixing bolt; 12. Bolt; 13. Smoke sensor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 , a tuyere fire damper for a ventilation system comprises a fire damper body 1 and a connecting frame 2, a limiting groove 3 is provided on the outer surface of the connecting frame 2, a limiting plate 4 is slidably connected in the limiting groove 3, a threaded rod 5 is threadedly connected to the outer surface of the limiting plate 4, a rotating handle 6 is fixedly installed at one end of the threaded rod 5, a ferrule 7 is sleeved and installed on the outer surface of the threaded rod 5, and the connecting frame 2 is sleeved and installed at both ends of the ferrule 7, a slide groove is provided on the top of the fire damper body 1, a filter screen 8 is slidably connected in the slide groove, a handle 9 is fixedly installed on the top of the filter screen 8, a fixing plate 10 is fixedly installed on the outer surface of the handle 9, a fixing bolt 11 is threadedly connected to the top of the fixing plate 10, one end of the fixing bolt 11 is fitted with the top of the fire damper body 1, bolts 12 are threadedly connected to the outer surfaces of the two ends of the ferrule 7, the ferrule 7 is threadedly connected to the connecting frame 2 by the bolts 12, the number of limiting grooves 3 is four, and the limiting grooves 3 are distributed on the outer surface around the connecting frame 2, and a smoke sensor 13 is arranged on the top of the fire damper body 1.

[0022] The use method and advantages of the utility model: When the air outlet fire damper for the ventilation system is in use, the working process is as follows:

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when using the air outlet fire damper for the ventilation system, firstly, the electrical equipment in the air outlet fire damper for the ventilation system is connected to an external power supply. When using it, the user needs to first put the connecting frame 2 on the ventilation duct, and then turn the handle 6 according to the size and width of the ventilation duct, so that the threaded rod 5 drives the limit plate 4 to slide in the limit groove 3 until the limit plate 4 fits with the ventilation duct and is fixed in position. Then, the four sides of the connecting frame 2 are also fixed in position in the same way. After it has been working for a long time, when the filter screen 8 needs to be inspected or repaired, the fixing bolt 1 is tightened. 1. After loosening the fixing plate 10, the filter screen 8 can be driven to slide out of the slide groove of the fire damper body 1 by pulling the handle 9, and then it can be replaced or repaired, and then it can be installed into the fire damper body 1 according to the same operation. The utility model solves the problem that the fire damper with different sizes and widths of ventilation ducts needs to be matched, which limits its use. However, after long-term use, the filter mechanism needs to be checked and cleaned. However, the existing fire damper and filter mechanism are integrated, which is troublesome to disassemble and needs to be disassembled and repaired with the help of external tools. It is convenient and practical.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fire damper for an air outlet of a ventilation system, comprising a fire damper body (1) and a connecting frame (2), characterized in that: The outer surface of the connecting frame (2) is provided with a limiting groove (3), a limiting plate (4) is slidably connected in the limiting groove (3), a threaded rod (5) is threadedly connected to the outer surface of the limiting plate (4), a rotating handle (6) is fixedly mounted on one end of the threaded rod (5), a clamping sleeve (7) is sleeved and mounted on the outer surface of the threaded rod (5), and both ends of the clamping sleeve (7) are sleeved and mounted on the connecting frame (2).

2. The air outlet fire damper for ventilation system according to claim 1, characterized in that: A slide groove is provided on the top of the fire damper body (1), a filter screen (8) is slidably connected in the slide groove, and a handle (9) is fixedly mounted on the top of the filter screen (8).

3. The air outlet fire damper for ventilation system according to claim 2, characterized in that: A fixing plate (10) is fixedly mounted on the outer surface of the handle (9), a fixing bolt (11) is threadedly connected to the top of the fixing plate (10), and one end of the fixing bolt (11) is in contact with the top of the fire damper body (1).

4. The air outlet fire damper for ventilation system according to claim 1, characterized in that: Bolts (12) are threadedly connected to the outer surfaces of both ends of the ferrule (7), and the ferrule (7) is threadedly connected to the connecting frame (2) via the bolts (12).

5. The air outlet fire damper for ventilation system according to claim 1, characterized in that: The number of the limiting grooves (3) is four, and the limiting grooves (3) are distributed on the outer surface of the connecting frame (2) around.

6. The air outlet fire damper for ventilation system according to claim 1, characterized in that: A smoke sensor (13) is arranged on the top of the fire damper body (1).

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