Fire-fighting detection air draft device in building and construction method of fire-fighting detection air draft device

Abstract

The invention discloses a fire-fighting detection air draft device in a building and a construction method thereof, the fire-fighting detection air draft device in the building comprises an air draft pipeline, a smoke sensor is fixedly mounted at the left end of the bottom of the outer surface of the air draft pipeline, and clamping plates are fixedly connected to the left ends of the two sides of an inner cavity of the air draft pipeline. Through the arrangement of the smoke sensor, smoke in the corridor can be sensed, meanwhile, the smoke exhaust fan can be controlled to work through the fire fighting controller in the building, and the smoke in the corridor in the building can be pumped and exhausted to the outside, so that the smoke concentration in the corridor in the building is reduced, and people can escape conveniently; and meanwhile, through the arrangement of a fixing frame plate, a rotating shaft, an inserting block, a stopping block, an opening inserting hole, a clamping plate, a supporting sliding rod and a connecting frame, when the smoke exhaust fan is damaged and needs to be overhauled subsequently, the personnel can conveniently move and adjust the smoke exhaust fan to the left end of the air draft pipeline, and therefore the personnel can overhaul the smoke exhaust fan from the side face of the air draft pipeline.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, specifically to a building fire protection detection ventilation device and its construction method. Background Technology

[0002] When a fire occurs in a building, a large amount of smoke and harmful gases, such as carbon monoxide, carbon dioxide, and soot, are produced. These smoke and harmful gases not only seriously affect the visibility of firefighters and hinder rescue operations, but also threaten the lives of trapped people and rescuers. Therefore, ventilation devices are often installed in the corridors of buildings to quickly exhaust the fire or smoke to the outside so that people can escape.

[0003] However, the fans in existing fire-fighting ventilation systems are usually installed and fixed inside the ventilation duct, such as the fire-fighting smoke exhaust fan for building ducts in CN201820130270.8. When maintenance is required due to malfunction, the limited operating space inside the ventilation duct makes it difficult for personnel to operate inside. Instead, the entire ventilation duct needs to be disassembled before maintenance can be performed on the fan, causing great inconvenience to the maintenance work. Summary of the Invention

[0004] The purpose of this invention is to provide a building fire protection inspection ventilation device and its construction method, which has the advantages of facilitating personnel to carry out inspection and maintenance work and bringing great convenience to personnel inspection work.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fire detection ventilation device for buildings and its construction method, comprising a ventilation duct, a smoke sensor fixedly installed at the left end of the bottom of the outer surface of the ventilation duct, a clamping plate fixedly connected to the left ends of both sides of the inner cavity of the ventilation duct, an opening insertion hole opened on the surface of the clamping plate, a connecting frame slidably connected to the middle end of the inner cavity of the ventilation duct, a mounting bracket fixedly connected to the inner cavity of the connecting frame, a smoke exhaust fan fixedly installed on the surface of the mounting bracket, a fixed frame plate contacting the left side of the ventilation duct, a supporting sliding rod fixedly connected between the right side of the fixed frame plate and the left side of the connecting frame, a rotating shaft movably connected to both ends of the fixed frame plate via bearings, an insert block fixedly connected to the right side of the rotating shaft, the surface of the insert block movably connected to the surface of the opening insertion hole, a stop block fixedly connected to the right end of the insert block, and the left side of the stop block movably connected to the right side of the clamping plate.

[0006] As a preferred embodiment, guide plates one are fixedly connected to all four sides of the left end of the inner cavity of the exhaust duct, guide plates two are installed inside the connecting frame, one end of the support slide rod is fixedly connected to guide plate two, and the other end passes through guide plate one and is connected to the fixed frame plate.

[0007] As a preferred embodiment, a first metal protective net is fixedly connected to the middle of the fixed frame plate, and a second metal protective net is fixedly connected to the right side of the exhaust duct.

[0008] As a preferred embodiment, a torsion spring is fixedly installed between the right end of the rotating shaft and the right side of the fixed frame plate.

[0009] As a preferred embodiment, the number of mounting brackets is two, and the shape of the mounting brackets is V-shaped.

[0010] As a preferred embodiment, mounting plates are fixedly connected to the middle ends of both sides of the outer surface of the exhaust duct, and a strip-shaped mounting groove is provided in the middle end of the mounting plate.

[0011] As a preferred embodiment, a knob is fixedly connected to the left side of the rotating shaft.

[0012] A construction method for a building fire protection detection exhaust device, comprising the aforementioned building fire protection detection exhaust device, is as follows:

[0013] During construction, this exhaust duct is installed in the corridor. When smoke appears in the corridor due to a fire, the smoke detector can detect the smoke and send a signal to the building's fire control panel. This allows the fire control panel to activate the smoke exhaust fan, which then exhausts the smoke from the corridor to the outside from left to right, reducing the smoke concentration and facilitating escape. When the smoke exhaust fan needs maintenance due to damage, the shaft can be rotated to rotate the insert and stop blocks. The stop blocks can then disengage from the right side of the clamping plate, allowing personnel to pull the shaft and insert blocks to move them out of the opening. The movement of the shaft moves the fixed frame, support slide bar, connecting frame, and smoke exhaust fan to the left until the smoke exhaust fan is at the left end of the exhaust duct. This allows personnel to perform maintenance on the smoke exhaust fan from the side of the exhaust duct.

[0014] The guide plate provides support and guidance for the support slide rod, preventing it from tilting during movement. The first and second metal protective nets protect both sides of the exhaust duct. The torsion spring applies pressure during shaft rotation, preventing large-angle rotation that could cause the stop block to detach from the plate surface when not operated by personnel. The mounting bracket supports and secures the exhaust fan to the connecting frame. The mounting plate and strip mounting groove facilitate installation and fixation of the exhaust duct to the corridor wall. The knob allows for easy operation of the shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention, through the installation of smoke sensors, can detect smoke in corridors and simultaneously control the smoke exhaust fan via the building's fire control panel. This allows for the extraction of smoke from the corridors to the outside, reducing smoke concentration and facilitating evacuation. Furthermore, the inclusion of a fixed frame, rotating shaft, insert block, stop block, opening hole, locking plate, supporting slide rod, and connecting frame facilitates easy relocation and adjustment of the smoke exhaust fan to the left end of the exhaust duct when maintenance is required due to malfunction. This allows for convenient and quick maintenance from the side of the duct, greatly simplifying the process. Attached Figure Description

[0017] Figure 1 This is a bottom-view perspective view of the building fire detection ventilation device of the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0019] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0020] Figure 4 For the present invention Figure 3 A magnified view of section A in the image.

[0021] In the diagram: 1. Exhaust duct; 2. Mounting plate; 3. Smoke sensor; 4. Fixing frame plate; 5. Knob; 6. First metal protective mesh; 7. Clamping plate; 8. Guide plate one; 9. Support slide bar; 10. Smoke exhaust fan; 11. Mounting bracket; 12. Connecting frame; 13. Second metal protective mesh; 14. Rotating shaft; 15. Torsion spring; 16. Stop block; 17. Opening socket; 18. Insert block. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] The components in this application, such as the exhaust duct 1, mounting plate 2, smoke sensor 3, fixed frame plate 4, knob 5, first metal protective net 6, clamping plate 7, guide plate 8, support slide bar 9, smoke exhaust fan 10, mounting bracket 11, connecting frame 12, second metal protective net 13, rotating shaft 14, torsion spring 15, stop block 16, opening socket 17, and plug block 18, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0025] Example 1:

[0026] Please see Figure 1-4 As shown, this is one embodiment of the present invention. The present invention provides a building fire detection ventilation device and its construction method, including a ventilation duct 1. A smoke sensor 3 is fixedly installed at the left end of the bottom of the outer surface of the ventilation duct 1. A clamping plate 7 is fixedly connected to the left end of both sides of the inner cavity of the ventilation duct 1. An opening insertion hole 17 is opened on the surface of the clamping plate 7. A connecting frame 12 is slidably connected to the middle end of the inner cavity of the ventilation duct 1. An installation frame 11 is fixedly connected to the inner cavity of the connecting frame 12. A smoke exhaust fan 10 is fixedly installed on the surface of the installation frame 11. A fixed frame plate 4 is in contact with the left side of the ventilation duct 1. Supporting slide rods 9 are fixedly connected between the right side of the fixed frame plate 4 and the left side of the connecting frame 12. A rotating shaft 14 is movably connected to both ends of the fixed frame plate 4 through bearings. An insertion block 18 is fixedly connected to the right side of the rotating shaft 14. The surface of the insertion block 18 is movably connected to the surface of the opening insertion hole 17. A stop block 16 is fixedly connected to the right end of the insertion block 18. The left side of the stop block 16 is movably connected to the right side of the clamping plate 7.

[0027] In this technical solution, the exhaust duct 1 is installed in the corridor. When smoke appears in the corridor due to a fire, the smoke sensor 3 can detect the smoke and send a signal to the building's fire control panel. Simultaneously, the fire control panel can control the smoke exhaust fan 10 to operate, thus exhausting the smoke from the corridor to the outside from left to right, reducing the smoke concentration in the corridor and facilitating evacuation. Furthermore, when the smoke exhaust fan 10 needs repair or maintenance due to damage, it can be used to... The rotating shaft 14 can be rotated to drive the insert block 18 and the stop block 16 to rotate. After the stop block 16 is disengaged from the right side of the clamping plate 7 under the action of rotation, the personnel can pull the rotating shaft 14 and the insert block 18 to move them out of the opening insertion hole 17. The movement of the rotating shaft 14 can drive the fixed frame plate 4, the support slide rod 9, the connecting frame 12 and the smoke exhaust fan 10 to move to the left until the smoke exhaust fan 10 can be moved to the left end of the exhaust duct 1. This allows the personnel to perform maintenance work on the smoke exhaust fan 10 from the side of the exhaust duct 1.

[0028] Example 2:

[0029] Based on Embodiment 1, this is another embodiment of the present invention, as follows: Figure 1-4 As shown, guide plates 1-8 are fixedly connected to the left side of the inner cavity of the exhaust duct 1. Guide plates 2-19 are installed inside the connecting frame 12. One end of the support slide rod 9 is fixedly connected to guide plate 2-19, and the other end passes through guide plate 1-8 and is connected to the fixed frame plate 4. A first metal protective net 6 is fixedly connected to the middle of the fixed frame plate 4. A second metal protective net 13 is fixedly connected to the right side of the exhaust duct 1. A torsion spring 15 is fixedly installed between the right end of the rotating shaft 14 and the right side of the fixed frame plate 4. There are two mounting brackets 11. The mounting brackets 11 are V-shaped. Mounting plates 2 are fixedly connected to the middle of both sides of the outer surface of the exhaust duct 1. A strip-shaped mounting groove is opened in the middle of the mounting plate 2. A knob 5 is fixedly connected to the left side of the rotating shaft 14.

[0030] In this technical solution, the guide plate 8 is used to support and guide the support slide rod 9, preventing it from tilting during movement. The first metal protective net 6 and the second metal protective net 13 are used to protect both sides of the exhaust duct 1. The torsion spring 15 applies pressure during the rotation of the rotating shaft 14, preventing the shaft 14 from rotating at a large angle when not operated by personnel, which could cause the stop block 16 to detach from the surface of the clamping plate 7. The mounting bracket 11 is used to support and fix the exhaust fan 10 to the connecting frame 12. The mounting plate 2 and the strip mounting groove facilitate the installation and fixation of the exhaust duct 1 to the corridor wall. The knob 5 allows personnel to operate the rotating shaft 14 to rotate.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A building fire protection testing ventilation device, comprising a ventilation duct (1), characterized in that: A smoke sensor (3) is fixedly installed on the bottom of the outer surface of the exhaust pipe (1). A clamping plate (7) is fixedly connected to the left end of both sides of the inner cavity of the exhaust pipe (1). An opening insertion hole (17) is opened in the inner of the clamping plate (7). A connecting frame (12) is slidably installed at the middle end of the inner cavity of the exhaust duct (1), and an installation frame (11) is fixedly connected to the inner cavity of the connecting frame (12). A smoke exhaust fan (10) is fixedly installed on the surface of the installation frame (11). Both ends of the exhaust pipe (1) are equipped with fixed frame plates (4), and support slide rods (9) are installed between the four sides of the fixed frame plate (4) on the left side and the four sides of the left side of the connecting frame (12). The fixed frame plate (4) has a connecting hole, and bearings are installed at both ends of the connecting hole, and a rotating shaft (14) is movably connected through the bearings; a plug (18) is fixedly connected to the right side of the rotating shaft (14), the plug (18) is inserted into the open plug hole (17), and a stop block (16) is fixedly connected to the right end; a notch is provided on the outside of the open plug hole (17), and the height of the notch is not greater than the height of the stop block; the left side of the stop block (16) is movably connected to the right side of the card plate (7).

2. The building fire protection detection exhaust device according to claim 1, characterized in that: The left side of the inner cavity of the exhaust pipe (1) is fixedly connected with a guide plate (8), and a guide plate (19) is installed in the connecting frame (12). One end of the support slide rod (9) is fixedly connected to the guide plate (19), and the other end passes through the guide plate (8) and is connected to the fixed frame plate (4).

3. The building fire protection detection exhaust device according to claim 1, characterized in that: The middle of the fixed frame plate (4) is fixedly connected to a first metal protective net (6), and the right side of the exhaust pipe (1) is fixedly connected to a second metal protective net (13).

4. The building fire protection detection exhaust device according to claim 1, characterized in that: A torsion spring (15) is fixedly installed between the right end of the rotating shaft (14) and the right side of the fixed frame plate (4).

5. The building fire protection detection ventilation device according to claim 1, characterized in that: There are two mounting brackets (11), and the mounting brackets (11) are V-shaped. The two mounting brackets (11) are fixedly installed on the upper and lower sides of the exhaust fan (10).

6. The building fire protection detection exhaust device according to claim 1, characterized in that: The exhaust duct (1) has mounting plates (2) fixedly connected to the middle of both sides of its outer surface, and the middle of the mounting plate (2) has a strip-shaped mounting groove.

7. The building fire protection detection exhaust device according to claim 1, characterized in that: A knob (5) is fixedly connected to the left side of the rotating shaft (14).

8. A construction method for a fire protection testing ventilation device in a building, characterized in that: The building fire protection detection exhaust device as described in claim 1 is operated as follows: Step 1: During construction, this exhaust duct (1) is installed in the corridor. When smoke appears, when the smoke sensor (3) detects the smoke concentration limit, it sends a signal to the fire controller in the building. At the same time, the fire controller drives the smoke exhaust fan (10) to work, so that the smoke in the corridor in the building is exhausted to the outside from left to right. When the exhaust fan (10) is under maintenance: Step 2: Rotate the shaft (14) to drive the insert block (18) and the stop block (16) to rotate relative to the clamping plate (7), so that the stop block (16) can disengage from the notch of the clamping plate (7) under the action of rotation; Personnel pull the rotating shaft (14) and the insert block (18) to move. The rotating shaft (14) moves and drives the fixed frame plate (4). The support slide rod (9) at the bottom of the fixed frame plate (4) moves outward with the fixed frame plate (4) at one end and drives the connecting frame (12) to move outward through the guide plate (19) at the other end. The exhaust fan (10) in the connecting frame (12) moves outward synchronously until the exhaust fan (10) moves to the left end of the exhaust duct (1), so that personnel can perform maintenance work on the exhaust fan (10) from the side of the exhaust duct (1). Step 3: After the maintenance is completed, push the connecting frame (12) and the exhaust fan (10) into the exhaust duct (1) by pushing the support slide bar (9); then push by rotating the knob (5) to move the stop block (16) from the notch and rotate it to engage with the outer surface of the card plate (7).

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