Smoke prevention and exhaust assembly for fire engineering

Abstract

The utility model discloses a smoke control and exhaust assembly for fire-fighting engineering, and belongs to the technical field of fire-fighting smoke control and exhaust, the lower end of a first smoke exhaust pipeline is provided with a second smoke exhaust pipeline, the side walls of the first smoke exhaust pipeline and the second smoke exhaust pipeline are provided with auxiliary pipelines, and pipe orifices of the auxiliary pipelines are provided with access doors; smoke discharging is achieved through the first smoke discharging pipeline and the second smoke discharging pipeline, and overhauling operation of the smoke discharging pipelines is achieved through the overhauling door. The adaptive design ensures the stability and movement smoothness of the piston type frame in the pipeline bin, and a solid foundation is provided for installation and operation of the filter screen. The telescopic device drives the frame and the blades to reciprocate, changes the position of the filter screen, increases the filtering area and efficiency, removes dust and sediments on the inner wall of the pipeline bin, keeps the pipeline clean and smooth, and ensures stable operation of a smoke exhaust system. The inclined angle design of the blade scrapes dust, avoids damage to the inner wall of the pipeline, protects the integrity of the pipeline, prolongs the service life, and reduces the downtime and maintenance cost of the system.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fire-fighting smoke prevention and exhaust, especially to a smoke prevention and exhaust assembly for fire engineering. BACKGROUND

[0002] The smoke prevention and exhaust device in fire engineering is an important component of the building fire safety system, mainly including a smoke prevention system and a smoke exhaust system. The smoke prevention system mainly prevents smoke from invading the evacuation passage through natural ventilation or mechanical pressurized air supply, ensuring the safe evacuation of personnel. The smoke exhaust system effectively exhausts the smoke in the building to the outside through natural ventilation or mechanical smoke exhaust, thereby ensuring the freshness of indoor air.

[0003] In current fire engineering, the smoke prevention and exhaust assembly plays a crucial role. However, these components, especially the smoke exhaust duct, indeed have the drawback that particulate matter adheres to the duct wall due to the passage of a large amount of smoke, which brings considerable trouble to cleaning work.

[0004] As an important component of the smoke prevention and exhaust system, the smoke exhaust duct's main function is to quickly remove harmful gases and smoke during a fire, ensuring the safe evacuation of personnel and the smooth progress of fire rescue. However, due to the presence of a large amount of particulate matter in the smoke, these particulate matters tend to adhere to the duct wall when passing through the duct. Over time, the accumulated particulate matter becomes more and more, not only affecting the smoke exhaust efficiency of the duct, but also posing a threat to the structural safety of the duct.

[0005] Cleaning these particulate matters adhering to the duct wall is a time-consuming and labor-intensive task. Traditional cleaning methods often require manual entry into the duct for cleaning, which not only has low work efficiency but also has certain safety risks. Especially for large or complex smoke exhaust duct systems, the difficulty and cost of manual cleaning will increase.

[0006] Even if modern cleaning methods such as mechanical cleaning or high-pressure water flushing are used, there are still problems such as incomplete cleaning and easy damage to the duct wall. Moreover, these cleaning methods may also generate a large amount of waste, such as wastewater and waste residue produced by flushing, and the disposal of these wastes needs to comply with environmental emission standards, further increasing the complexity and cost of cleaning work. UTILITY MODEL CONTENT

[0007] The main purpose of the utility model is to provide a smoke prevention and exhaust assembly for fire engineering, which can effectively solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0009] The utility model provides a fire engineering smoke exhaust assembly, including smoke exhaust pipeline, top sealing cover, connecting pipe, connecting flange and unpowered air cap, top sealing cover installs on first smoke exhaust pipeline, connecting pipe is located top sealing cover upper end center, and the electric control valve is equipped between connecting pipe and top sealing cover, realizes the opening and closing of smoke exhaust, and connecting pipe is connected with unpowered air cap through connecting flange, realizes the smoke exhaust operation,

[0010] The lower end of the first smoke exhaust pipeline is provided with a second smoke exhaust pipeline, the side walls of the first smoke exhaust pipeline and the second smoke exhaust pipeline are provided with auxiliary pipelines, and access doors are installed at the pipe openings of the auxiliary pipelines.

[0011] The lower ends of the second smoke exhaust pipeline and the first smoke exhaust pipeline form a pipeline bin, a piston frame is inserted into the lower end of the pipeline bin, a filter screen is installed in the piston frame, a telescopic device is connected to the lower end of the piston frame through a plurality of spiral support frames and a connecting frame, the outer edges of the spiral support frames are provided with spiral blades, the piston frame and the spiral blades are moved in the pipeline bin through the telescopic device, thereby changing the positions of the piston frame and the filter screen, and the spiral blades are used to scrape dust from the inner walls of the pipeline bin.

[0012] As a preferred scheme of the present application, a flange is arranged at the connection between the first smoke exhaust pipeline and the second smoke exhaust pipeline, a sealing ring is arranged at the connection, and the first smoke exhaust pipeline and the second smoke exhaust pipeline are connected through bolts, nuts and anti-skid washers.

[0013] As a preferred scheme of the present application, the auxiliary pipelines are composed of two half pipelines, which are arranged on the first smoke exhaust pipeline and the second smoke exhaust pipeline respectively, so that the two half pipelines form a complete pipeline, a sealing strip is arranged at the connection between the two half pipelines and is fixed through a bolt, and the access door is fixed to the auxiliary pipeline through a bolt and is provided with a sealing ring at the connection with the auxiliary pipeline.

[0014] As a preferred scheme of the present application, the piston frame is adapted to the pipeline bin, and the filter screen is fixed to the piston frame through a bolt, wherein the filter screen is a double-layer filter screen.

[0015] As a preferred scheme of the present application, the spiral support frame is designed in a spiral shape, the upper end of the spiral support frame is welded and fixed to the piston frame, the lower end of the spiral support frame is welded and fixed to the connecting frame, and the connecting frame is connected to the telescopic end of the telescopic device through a bolt.

[0016] As a preferred scheme of the present application, the spiral blade is fixed to the spiral support frame through a bolt, the spiral blade is inclined to contact the pipeline bin, and the inclination angle of the spiral blade is zero to thirty degrees.

[0017] As a preferred scheme of the present application, the two spiral support frames are symmetrically distributed on the piston frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The adaptive design of the piston frame and the pipeline bin ensures the stability and smoothness of the frame in the pipeline bin, and provides a solid foundation for the installation and operation of the filter screen. The double-layer structure design of the filter screen effectively filters harmful substances in the smoke, improves the smoke exhaust quality, and protects the environment and personnel health. The driving of the telescopic device enables the piston frame and the spiral blade to reciprocate in the pipeline bin. This design not only changes the position of the filter screen, increases the filtering area and efficiency, but also effectively removes dust and deposits on the inner wall of the pipeline bin through the scraping action of the spiral blade, maintains the cleanliness and smoothness of the pipeline, and ensures the long-term stable operation of the smoke exhaust system.

[0020] The design of the spiral support frame not only enhances the stability and durability of the entire structure, but also ensures the firmness and reliability of the entire system through the welding and fixation of the upper end with the piston frame and the lower end with the connecting frame. At the same time, the symmetrically distributed spiral support frames improve the uniformity of the system stress, further enhancing the stability and reliability of the smoke exhaust system. The inclined angle design of the blade enables it to scrape the dust on the inner wall of the pipeline bin while avoiding damage to the inner wall of the pipeline, protecting the integrity of the pipeline. This design not only prolongs the service life of the pipeline, but also reduces the system downtime and maintenance cost caused by pipeline damage. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a side view of the overall structure of the utility model;

[0023] Figure 3 It is a display diagram of the smoke exhaust pipeline, piston frame, filter screen, spiral support frame and telescopic device of the utility model;

[0024] Figure 4 It is a schematic diagram of the smoke exhaust pipeline, piston frame, filter screen, spiral support frame and telescopic device of the utility model;

[0025] Figure 5 It is a display diagram of the spiral support frame, spiral blade and filter screen of the utility model.

[0026] In the diagram: 1. First exhaust duct; 2. Second exhaust duct; 3. Secondary duct; 4. Inspection door; 5. Top sealing cover; 6. Connecting pipe; 7. Connecting flange; 8. Non-powered vent cap; 9. Telescopic device; 10. Piston frame; 11. Filter screen; 12. Spiral support frame; 13. Spiral blade; 14. Connecting frame; 15. Duct compartment. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] like Figure 1 - Figure 5 As shown, a smoke control and exhaust system for fire protection engineering mainly consists of key components such as a smoke exhaust duct, a top sealing cover 5, a connecting pipe 6, a connecting flange 7, and a non-powered vent cap 8. The top sealing cover 5 is designed and installed at the top of the first smoke exhaust duct 1 to ensure the airtightness of the smoke exhaust system. The connecting pipe 6 is located at the upper center of the top sealing cover 5, and an electrically controlled valve is installed between it and the top sealing cover 5. This electrically controlled valve is used to precisely control the opening and closing of the smoke exhaust, thereby ensuring the efficient operation of the smoke exhaust system. The connecting pipe 6 is connected to the non-powered vent cap 8 through the connecting flange 7, thus realizing the smoke exhaust function and ensuring that smoke can be quickly and effectively discharged in emergencies.

[0029] In this smoke control and exhaust assembly, the lower end of the first smoke exhaust duct 1 is connected to the second smoke exhaust duct 2. To enhance the system's smoke exhaust capacity, auxiliary ducts 3 are provided on the side walls of both the first and second smoke exhaust ducts 1 and 2. Inspection doors 4 are installed at the inlets of these auxiliary ducts 3 to facilitate maintenance of the smoke exhaust ducts. Through the coordinated operation of the first and second smoke exhaust ducts 1 and 2, efficient smoke exhaust can be achieved, and the maintenance doors 4 allow for convenient maintenance and repair of the smoke exhaust ducts.

[0030] The lower ends of the second exhaust duct 2 and the first exhaust duct 1 together form a duct chamber 15. A piston-type frame 10 is inserted into the lower end of this duct chamber 15, and a filter screen 11 is installed inside the piston-type frame 10 to filter harmful substances in the exhaust smoke. The lower end of the piston-type frame 10 is connected to the telescopic device 9 through multiple spiral support frames 12 and connecting frames 14. The outer edge of the spiral support frame 12 is provided with spiral blades 13. Driven by the telescopic device 9, these blades cause the piston-type frame 10 and the spiral blades 13 to reciprocate within the duct chamber 15, thereby changing the position of the piston-type frame 10 and the filter screen 11. The spiral blades 13 can also scrape away dust from the inner wall of the duct chamber 15, keeping the duct clean and ensuring the long-term stable operation of the exhaust system.

[0031] At the connection of the first exhaust pipe 1 and the second exhaust pipe 2, a flange is designed, and a sealing ring is also provided at the connection to ensure the tightness of the connection. The firm connection of the first exhaust pipe 1 and the second exhaust pipe 2 is achieved by the cooperation of bolts, nuts and anti-skid washers, which ensures the sealing and stability of the entire exhaust system.

[0032] The sub-pipe 3 is composed of two half-pipes, which are installed on the first exhaust pipe 1 and the second exhaust pipe 2 respectively. In this way, the two half-pipes are combined into a complete pipe. The connection of the two half-pipes is provided with a sealing strip and fixed by bolts to ensure the sealing of the sub-pipe 3. The access door 4 is fixed on the sub-pipe 3 by bolts, and the connection between the access door 4 and the sub-pipe 3 is provided with a sealing ring, which can ensure that the air tightness inside the sub-pipe 3 is not affected during maintenance.

[0033] The piston frame 10 is matched with the pipe bin 15 to ensure its stability and smooth movement in the pipe bin 15. The filter screen 11 is fixed on the piston frame 10 by bolts, and the filter screen 11 adopts a double-layer structure design, which can more effectively filter harmful substances in the smoke and improve the exhaust quality.

[0034] The spiral support frame 12 is designed in a spiral shape, and its upper end is fixed on the piston frame 10 by welding, and its lower end is also fixed on the connecting frame 14 by welding. This design makes the spiral support frame 12 have good stability and durability when bearing pressure. The connecting frame 14 is connected with the extension end of the telescopic device 9 by bolts, which ensures the flexibility of the entire system and the stable work of the telescopic device 9.

[0035] The spiral blade 13 is fixed on the spiral support frame 12 by bolts, and the blade contacts the pipe bin 15 at an inclination angle of zero to thirty degrees. This design can effectively remove dust from the inner wall of the pipe bin 15 and keep the pipe clean, while avoiding damage to the inner wall of the pipe.

[0036] In order to ensure the uniform stress and stable operation of the system, two spiral support frames 12 are symmetrically distributed on the piston frame 10, which helps to improve the stability and reliability of the entire exhaust system.

[0037] The top sealing cover 5 is designed and installed at the top end of the first smoke exhaust pipe 1 to ensure the sealing of the smoke exhaust system. The connecting pipe 6 is installed at the center of the upper end of the top sealing cover 5. An electrically controlled valve is arranged between the connecting pipe 6 and the top sealing cover 5 to accurately control the opening and closing of the smoke exhaust. The connecting pipe 6 is connected with the unpowered air cap 8 through the connecting flange 7 to realize the smoke exhaust function. The lower end of the first smoke exhaust pipe 1 is connected with the second smoke exhaust pipe 2. The auxiliary pipe 3 is installed on the side wall of the first smoke exhaust pipe 1 and the second smoke exhaust pipe 2, and the access door 4 is installed at the pipe opening. The access door 4 is fixed on the auxiliary pipe 3 through bolts, and a sealing ring is arranged at the connection between the access door 4 and the auxiliary pipe 3. The second smoke exhaust pipe 2 and the lower end of the first smoke exhaust pipe 1 jointly form a pipe bin 15. The piston type frame 10 is inserted into the pipe bin 15, and the filter screen 11 is installed inside the piston type frame 10. The upper end of the spiral support frame 12 is fixed on the piston type frame 10 through welding, and the lower end is fixed on the connecting frame 14 through welding. The connecting frame 14 is connected with the telescopic end of the telescopic device 9 through bolts. The spiral blade 13 is fixed on the spiral support frame 12 through bolts, and the blade is arranged at an inclination angle of zero to thirty degrees to contact the pipe bin 15. The two spiral support frames 12 are symmetrically distributed on the piston type frame 10 to improve the stability and reliability of the system. The flanges are designed at the connection between the first smoke exhaust pipe 1 and the second smoke exhaust pipe 2, and sealing rings are arranged. The first smoke exhaust pipe 1 and the second smoke exhaust pipe 2 are firmly connected through the cooperation of bolts, nuts and anti-skid washers.

[0038] In an emergency, the smoke exhaust system is started through the electrically controlled valve. The smoke enters the first smoke exhaust pipe 1 and the second smoke exhaust pipe 2, and is finally exhausted through the unpowered air cap 8. When the smoke passes through the filter screen 11 in the piston type frame 10, the harmful substances are effectively filtered to improve the smoke exhaust quality. The spiral blade 13 reciprocates in the pipe bin 15 to scrape off the dust on the inner wall and keep the pipe clean. The auxiliary pipe 3 and the smoke exhaust pipe can be accessed through the access door 4 for maintenance and maintenance operation. The entire smoke exhaust system is kept sealed and stable during operation to avoid leakage and failure.

[0039] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions beyond the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A smoke exhaust assembly for fire engineering, comprising a smoke exhaust duct, a top sealing cover (5), a connecting pipe (6), a connecting flange (7) and a non-powered hood (8), the top sealing cover (5) is installed on the first smoke exhaust duct (1), the connecting pipe (6) is located at the center of the upper end of the top sealing cover (5), an electric control valve is arranged between the connecting pipe (6) and the top sealing cover (5) to realize the opening and closing of smoke exhaust, the connecting pipe (6) is connected with the non-powered hood (8) through the connecting flange (7) to realize the smoke exhaust operation, characterized in that: The lower end of the first smoke exhaust duct (1) is provided with a second smoke exhaust duct (2), the side walls of the first smoke exhaust duct (1) and the second smoke exhaust duct (2) are provided with a sub-duct (3), the mouth of the sub-duct (3) is provided with an access door (4), smoke is exhausted through the first smoke exhaust duct (1) and the second smoke exhaust duct (2), and the access door (4) is used for the maintenance operation of the smoke exhaust duct. ​ The lower end of the second smoke exhaust duct (2) and the first smoke exhaust duct (1) forms a duct bin (15), a piston frame (10) is inserted into the lower end of the duct bin (15), a filter screen (11) is arranged in the piston frame (10), the lower end of the piston frame (10) is connected with a telescopic device (9) through a plurality of spiral support frames (12) and a connecting frame (14), the outer edge of the spiral support frame (12) is provided with a spiral blade (13), the piston frame (10) and the spiral blade (13) are driven to move in the duct bin (15) through the telescopic device (9), so that the position of the piston frame (10) and the filter screen (11) is changed, and the spiral blade (13) is used for scraping dust on the inner wall of the duct bin (15).

2. A smoke control assembly according to claim 1, wherein: The connecting position of the first smoke exhaust duct (1) and the second smoke exhaust duct (2) is provided with a flange, a sealing ring is arranged at the connecting position, and the first smoke exhaust duct (1) and the second smoke exhaust duct (2) are connected through bolts, nuts and anti-skid washers.

3. A smoke control assembly according to claim 2, wherein: The sub-duct (3) is composed of two half ducts, which are arranged on the first smoke exhaust duct (1) and the second smoke exhaust duct (2) respectively, so as to form a complete duct, a sealing strip is arranged at the connecting position of the two half ducts and is fixed through bolts, the access door (4) is fixed on the sub-duct (3) through bolts, and a sealing ring is arranged at the connecting position of the access door (4) and the sub-duct (3).

4. A smoke control assembly according to claim 3, wherein: The piston frame (10) is matched with the duct bin (15), the filter screen (11) is fixed on the piston frame (10) through bolts, and the filter screen (11) is a double-layer filter screen.

5. A smoke control assembly according to claim 4, wherein: The spiral support frame (12) is designed in a spiral shape, the upper end of the spiral support frame (12) is welded and fixed on the piston frame (10), the lower end of the spiral support frame (12) is welded and fixed on the connecting frame (14), and the connecting frame (14) is connected with the telescopic end of the telescopic device (9) through bolts.

6. A smoke control assembly according to claim 5, wherein: The spiral blade (13) is fixed on the spiral support frame (12) through bolts, the spiral blade (13) is inclined to contact the duct bin (15), and the inclination angle of the spiral blade (13) is zero to thirty degrees.

7. A smoke control assembly according to claim 6, wherein: The two spiral support frames (12) are symmetrically distributed on the piston frame (10).

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