Fireproof air duct with angle iron flange

Abstract

The utility model relates to fire -proof air pipe technical field especially with angle iron flange's fire -proof air pipe, its technical scheme includes air pipe body, filter core and drive structure, the both ends fixed connection of air pipe body have angle iron flange for assembling, the middle part of air pipe body is seted up to have the mounting groove, the opening of mounting groove is installed with the apron, the inside plug connection of mounting groove has filter core, the inside symmetry of air pipe body is installed with the blocking plate, the utility model discloses when replacing filter core, only need to remove apron, apron gravity can drive the blocking plate to remove through the steel wire rope, make the blocking plate from the state parallel to the inside of air pipe body change for the state of plugging up the air pipe inner wall, this process effectively avoided the airflow flow in the inside of air pipe body, prevented dust from entering the inside of air pipe when replacing filter core, greatly improved the convenience of replacing filter core, guaranteed the cleanliness of the inside of air pipe simultaneously, reduced the risk that the subsequent ventilation air quality was contaminated, reduced the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of fireproof air ducts, specifically a fireproof air duct with an angle iron flange. Background Technology

[0002] Fireproof ducts play a crucial role in modern building ventilation and air conditioning systems. They must not only ensure smooth ventilation but also possess excellent fire resistance to effectively prevent the spread of fire and smoke through ventilation ducts in the event of a fire, thus buying precious time for personnel evacuation and fire rescue.

[0003] Traditional fireproof ducts have revealed some problems in practical applications. First, in terms of filter replacement, many fireproof ducts cannot effectively prevent airflow inside the duct when the filter is replaced, which makes it easy for dust to enter the duct during the replacement process. This not only affects the cleanliness of the duct, but may also have an adverse effect on the subsequent ventilation air quality, increasing maintenance costs and health risks. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fireproof air duct with angle iron flanges, comprising an air duct body, a filter element, and a drive structure. Angle iron flanges for assembly are fixedly connected to both ends of the air duct body. An installation groove is provided in the middle of the air duct body. A cover plate is installed at the opening of the installation groove. A filter element is inserted into the installation groove. Sealing plates are symmetrically installed inside the air duct body. A drive structure is installed inside the air duct body, and the drive structure is installed in conjunction with the sealing plates.

[0005] Preferably, the drive structure includes an L-shaped slide rail, pulleys, connecting blocks, mounting blocks, tension springs, and steel wire ropes. Two sets of the L-shaped slide rails are symmetrically arranged on both sides of the filter element on the inner wall of the duct body. Pulleys are symmetrically rotatably connected to both ends of the sealing plate. Both sets of pulleys are slidably connected to the inside of the L-shaped slide rails. Connecting blocks are rotatably connected to the ends of the two sealing plates that are close to each other. Mounting blocks are symmetrically fixedly connected inside the duct body. Tension springs are fixedly connected between the mounting blocks and the connecting blocks. Steel wire ropes are fixedly connected to the ends of the two sealing plates that are close to the tension springs. Three fixed pulleys are installed inside the duct body respectively. Steel wire ropes pass through the corresponding three fixed pulleys respectively. The ends of the two steel wire ropes away from the sealing plates are fixedly connected to one end of the cover plate.

[0006] Preferably, a counterweight is fixedly connected inside the cover plate.

[0007] Preferably, one form of the sealing plate is parallel to the inside of the duct body, and another form of the sealing plate is at an angle to the duct body and blocks the inside of the duct body.

[0008] Preferably, rubber blocks are fixedly connected to both the top and bottom of the sealing plate.

[0009] Preferably, the duct body is made of fireproof and heat-insulating material, and the connection parts and gaps of the duct body are sealed with fireproof sealing material.

[0010] Preferably, the frictional force between the sealing plate and the duct body is M1, the tension of the spring is N1, and the weight of the cover plate is G, where M1+N1 is less than G.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] Filter replacement is convenient and hygienic: The unique drive structure design of this fireproof duct allows for easy filter replacement by simply removing the cover plate. The weight of the cover plate, along with a steel wire rope, moves the sealing plate from a position parallel to the inside of the duct body to a position blocking the inner wall of the duct. This process effectively prevents airflow within the duct body, preventing dust from entering the duct during filter replacement, greatly improving the convenience of filter replacement, ensuring the cleanliness of the duct interior, reducing the risk of subsequent air pollution, and lowering maintenance costs.

[0013] Significantly improved fire resistance: The duct body is made of fireproof and heat-insulating materials, and the connection parts and gaps are sealed with fireproof sealing materials, which effectively prevents the spread of fire and smoke through the connection parts and gaps in the event of a fire, enhances the reliability of the entire fireproof duct system, and provides stronger protection for the building's safety in a fire. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sealing plate structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the L-shaped slide rail structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the driving structure of this utility model.

[0018] In the diagram: 1. Duct body; 2. Angle iron flange; 3. Mounting groove; 4. Cover plate; 5. Filter element; 6. Sealing plate; 21. L-shaped slide rail; 22. Pulley; 23. Connecting block; 24. Mounting block; 25. Tension spring; 26. Steel wire rope. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] like Figures 1-4 As shown, this utility model proposes a fireproof air duct with angle iron flanges, including an air duct body 1, a filter element 5, and a drive structure. Angle iron flanges 2 for assembly are fixedly connected to both ends of the air duct body 1. An installation groove 3 is provided in the middle of the air duct body 1, and a cover plate 4 is installed at the opening of the installation groove 3. A filter element 5 is inserted into the installation groove 3. Sealing plates 6, which can seal the interior of the air duct body, are symmetrically installed on both sides of the filter element inside the air duct body 1. A drive structure is installed inside the air duct body 1, and the drive structure is respectively installed in conjunction with the sealing plates 6. The cover plate... 4. A counterweight is fixedly connected inside. One form of the sealing plate 6 is parallel to the inside of the duct body 1. Another form of the sealing plate 6 is at an angle to the duct body 1 and blocks the inside of the duct body 1. Rubber blocks are fixedly connected to the top and bottom of the sealing plate 6. The duct body 1 is made of fireproof and heat-insulating material. The connection parts and gaps of the duct body 1 are sealed with fireproof sealing material. The friction between the sealing plate 6 and the duct body 1 is M1. The tension of the tension spring 25 is N1. The weight of the cover plate 4 is G. M1+N1 is less than G.

[0024] The drive structure includes an L-shaped slide rail 21, a pulley 22, a connecting block 23, a mounting block 24, a tension spring 25, and a steel wire rope 26. Two sets of the L-shaped slide rails 21 are symmetrically arranged on both sides of the filter element 5 on the inner wall of the duct body 1. To facilitate the movement of the sealing plate 6, one arm of the L-shaped slide rail 21 is parallel to the filter element 5, and the other arm is perpendicular to the filter element 5, with the right angle position located on the side away from the filter element. Both ends of the sealing plate 6 are symmetrically connected to pulleys 22. Both sets of pulleys 22 are slidably connected to the inside of the L-shaped slide rail 21. The ends of the two sealing plates 6 that are close to each other are rotatably connected to connecting blocks 23. The inside of the duct body 1 is symmetrically fixedly connected to mounting blocks 24. A tension spring 25 is fixedly connected between the mounting block 24 and the connecting block 23. The ends of the two sealing plates 6 that are close to the tension spring 25 are fixedly connected to steel wire ropes 26. The steel wire ropes 26 pull the sealing plates 6 to stretch the tension springs 25. The inside of the duct body 1 is equipped with three fixed pulleys. The steel wire ropes 26 pass through the corresponding three fixed pulleys. The ends of the two steel wire ropes 26 that are away from the sealing plate 6 pass through the duct body and are fixedly connected to one end of the cover plate 4.

[0025] Working principle:

[0026] Normal working condition: Under normal circumstances, the sealing plate 6 of the fireproof air duct is parallel to the inside of the air duct body 1, and the airflow inside the air duct body 1 can flow normally; the filter element 5 is installed inside the mounting groove 3 to filter the air passing through the air duct; the air duct body 1 is made of fireproof and heat-insulating material, and the connection parts and gaps are sealed with fireproof sealing material to ensure the fireproof performance of the air duct.

[0027] Filter replacement status: When filter element 5 needs to be replaced, first remove cover plate 4; because there is a counterweight block fixedly connected inside cover plate 4, cover plate 4 has a certain weight G; during the process of removing cover plate 4, the weight of cover plate 4 is transferred to sealing plate 6 through steel wire rope 26.

[0028] The steel wire rope 26 passes through three fixed pulleys inside the duct body 1 and is fixedly connected to one end of the two sealing plates 6 near the tension spring 25; as the cover plate 4 is removed, the steel wire rope 26 is stressed and drives the sealing plate 6 to move;

[0029] The pulleys 22, which are symmetrically connected at both ends of the sealing plate 6, slide along the L-shaped slide rails 21 symmetrically opened on the inner wall of the duct body 1. During the movement, the sealing plate 6 gradually changes from being parallel to the inside of the duct body 1 to having an angle with the duct body 1.

[0030] At the same time, the connecting block 23, which is rotatably connected to the two sealing plates 6 at their close ends, pulls the tension spring 25 between the mounting block 24 and the connecting block 23 when the sealing plate 6 moves. The tension spring 25 is stretched to generate a tension force N1.

[0031] Because there is a frictional force M1 between the sealing plate 6 and the duct body 1, and M1+N1 is less than G, the weight of the cover plate 4 is sufficient to overcome the frictional force and the tension of the spring, so that the sealing plate 6 can continue to move. Finally, the sealing plate 6 blocks the inside of the duct body 1, preventing the airflow inside the duct body 1, so that dust will not enter the inside of the duct body 1 when the filter element is replaced.

[0032] Restoring working status: After the filter element is replaced, reinstall the cover plate 4; at this time, the gravity of the cover plate 4 acts in the opposite direction through the steel wire rope 26, and with the assistance of the tension spring 25, the sealing plate 6 slides in the opposite direction along the L-shaped slide rail 21, returning to the state parallel to the inside of the air duct body 1, the air duct resumes normal operation, and the airflow can flow normally in the air duct body 1.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fireproof air duct with an angle iron flange, characterized in that: The air duct body (1) has angle iron flanges (2) for assembly fixedly connected to both ends of the air duct body (1). The air duct body (1) has an installation groove (3) in the middle and a cover plate (4) is installed at the opening of the installation groove (3). The filter element (5) is inserted into the mounting groove (3), and the sealing plate (6) is symmetrically installed inside the air duct body (1); The drive structure is installed inside the duct body (1), and the drive structure is installed in conjunction with the sealing plate (6).

2. A fireproof air duct with an angle iron flange according to claim 1, characterized in that: The drive structure includes an L-shaped slide rail (21), pulleys (22), connecting blocks (23), mounting blocks (24), tension springs (25), and steel wire ropes (26). Two sets of the L-shaped slide rails (21) are symmetrically arranged on both sides of the filter element inside the duct body (1). The two ends of the sealing plate (6) are symmetrically rotatably connected to pulleys (22). Both sets of pulleys (22) are slidably connected to the inside of the L-shaped slide rails (21). The two sealing plates (6) are rotatably connected to connecting blocks (23) at their closest points. The duct body (1) is symmetrically fixedly connected with mounting blocks (24), and a tension spring (25) is fixedly connected between the mounting blocks (24) and the connecting blocks (23). Two sealing plates (6) are fixedly connected with steel wire ropes (26) at their ends near the tension springs (25). Three fixed pulleys are installed inside the duct body (1), and the steel wire ropes (26) pass through the corresponding three fixed pulleys. The ends of the two steel wire ropes (26) away from the sealing plates (6) are fixedly connected to one end of the cover plate (4).

3. A fireproof air duct with an angle iron flange according to claim 1, characterized in that: The cover plate (4) has a counterweight fixedly connected inside.

4. A fireproof air duct with an angle iron flange according to claim 1, characterized in that: One form of the sealing plate (6) is parallel to the inside of the duct body (1), and another form of the sealing plate (6) is at an angle to the duct body (1) and blocks the inside of the duct body (1).

5. A fireproof air duct with an angle iron flange according to claim 1, characterized in that: Rubber blocks are fixedly connected to the top and bottom of the sealing plate (6).

6. A fireproof air duct with an angle iron flange according to claim 1, characterized in that: The duct body (1) is made of fireproof and heat-insulating material, and the connection parts and gaps of the duct body (1) are sealed with fireproof sealing material.

7. A fireproof air duct with an angle iron flange according to claim 2, characterized in that: The frictional force between the sealing plate (6) and the duct body (1) is M1, the tension of the tension spring (25) is N1, the weight of the cover plate (4) is G, and M1+N1 is less than G.

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