High-temperature-resistant fireproof air duct valve

Abstract

The utility model provides a high-temperature-resistant fireproof air duct valve. The high-temperature-resistant fireproof air duct valve comprises an outer frame, blades, a rotating shaft, an edge strip, an executing mechanism, a reset handle, a fusible metal sheet, an upper sealing strip and a lower sealing strip. The outer frame is of a Chinese character'kou '-shaped frame structure, and the two ends of the rotating shaft are connected with the outer frame in an inserted mode to form a rotating device. The blades are welded and fixed on the outer wall of the rotating shaft; the edge strips are welded and fixed on the inner walls of the two sides of the outer frame; the execution mechanism is fixedly mounted above the outer frame; the reset handle is fixed to the upper portion of the executing mechanism through a bolt. The fusible metal sheet is arranged below the execution mechanism, and the fusible metal sheet is connected with the execution mechanism; the upper sealing strip and the lower sealing strip are riveted and fixed at the lap joint between the blades and the edge strip; by improving the high-temperature-resistant fireproof air duct valve, the high-temperature-resistant fireproof air duct valve has the advantages of being easy and firm to install, good in sealing performance and capable of preventing smoke dust from entering, and therefore the problems and defects of an existing device are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire dampers, and more specifically, particularly to a high-temperature resistant and fireproof air duct valve. Background Technique

[0002] A fire damper is installed in the exhaust air duct of a building. The fire damper is a fire protection component, which is usually in an open state for ventilation. When a fire occurs, it opens for smoke exhaust. When the temperature of the smoke in the air duct reaches 280 degrees, the smoke already contains fire at this time. The fusible metal on the fire damper melts, the valve closes, and it meets the requirements of smoke leakage and fire resistance integrity within a certain time, playing a role in isolating smoke and preventing fire to avoid the spread of fire.

[0003] The blades of the fire damper are made of metal, and the sealing is achieved by the mutual overlap between the blades. The sealing performance is poor, and dust is easy to enter through the gaps between the blades, causing danger.

[0004] In view of this, in order to study and improve the existing problems, a high-temperature resistant and fireproof air duct valve is provided, aiming to solve the problems and improve the practical value through this technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-temperature resistant and fireproof air duct valve to solve the problems and deficiencies mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides a high-temperature resistant and fireproof air duct valve, which is achieved by the following specific technical means:

[0007] A high-temperature resistant and fireproof air duct valve includes: an outer frame, blades, a rotating shaft, side strips, an actuator, a reset handle, a fusible metal sheet, an upper sealing strip, and a lower sealing strip; the outer frame is a frame structure in the shape of the Chinese character "kou", and both ends of the rotating shaft are inserted and connected to the outer frame to form a rotating device; the blades are welded and fixed on the outer wall of the rotating shaft; the side strips are welded and fixed on the inner walls on both sides of the outer frame; the actuator is fixedly installed above the outer frame; the reset handle is fixed above the actuator by bolts; the fusible metal sheet is arranged below the actuator, and the fusible metal sheet is connected to the actuator; the upper sealing strip and the lower sealing strip are riveted and fixed at the overlapping joints between the blades and on the side strips.

[0008] As a further optimization of this technical solution, in the high-temperature resistant and fireproof air duct valve of the utility model, the upper sealing strip is a rectangular strip structure made of graphite, and there are two protrusions with an isosceles trapezoidal cross-section above the rectangular strip structure, and there is one at each overlapping joint of the blades for the upper sealing strip.

[0009] As a further optimization of the technical solution, in a high-temperature resistant and fireproof air duct valve of the present utility model, the lower sealing strip is a rectangular strip structure made of graphite, and two grooves with an isosceles trapezoidal cross-section are provided on the rectangular strip structure, and one is provided at each overlapping position of the blades for the lower sealing strip.

[0010] As a further optimization of the technical solution, in a high-temperature resistant and fireproof air duct valve of the present utility model, the blade is a bent plate-like structure, and the overlapping positions of adjacent blades are parallel to each other after closing.

[0011] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0012] 1. The lower sealing strip of the present utility model is a rectangular strip structure made of graphite, and two grooves with an isosceles trapezoidal cross-section are provided on the rectangular strip structure, and one is provided at each overlapping position of the blades for the lower sealing strip. Through the clamping and sealing of the upper sealing strip and the lower sealing strip, the sealing performance is good, preventing the entry of smoke and dust, and the graphite has a high temperature tolerance.

[0013] 2. The upper sealing strip and the lower sealing strip of the present utility model are riveted and fixed at the overlapping positions and the side strips between the blades. The installation of the upper sealing strip and the lower sealing strip is simple and firm, which is convenient for production.

[0014] 3. Through the improvement of the high-temperature resistant and fireproof air duct valve, the present utility model has the advantages of simple and firm installation, good sealing performance, and prevention of the entry of smoke and dust, thus effectively solving the problems and deficiencies in the existing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a cross-sectional structural diagram of the present utility model;

[0018] Figure 3 is a enlarged structural diagram at position A of the present utility model.

[0019] In the figure: outer frame 1, blade 2, rotating shaft 3, side strip 4, actuator 5, reset handle 6, fusible metal sheet 7, upper sealing strip 8, lower sealing strip 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0021] Please refer to Figures 1 to 3 , for a specific technical implementation solution of a high-temperature resistant and fireproof air duct valve provided by the present utility model:

[0022] A high-temperature resistant and fireproof air duct valve includes: an outer frame 1, blades 2, a rotating shaft 3, side strips 4, an actuator 5, a reset handle 6, a fusible metal sheet 7, an upper sealing strip 8, and a lower sealing strip 9; the outer frame 1 is in the shape of a Chinese character "kou" frame structure, and both ends of the rotating shaft 3 are inserted and connected to the outer frame 1 to form a rotating device; the blades 2 are welded and fixed on the outer wall of the rotating shaft 3; the blades 2 are in a bent plate-like structure, and the overlapping parts of adjacent blades 2 are parallel after closing, which is convenient for the upper sealing strip 8 and the lower sealing strip 9 to be clamped and sealed; the side strips 4 are welded and fixed on the inner walls on both sides of the outer frame 1; the actuator 5 is fixedly installed above the outer frame 1; the reset handle 6 is fixed above the actuator 5 by bolts; the fusible metal sheet 7 is arranged below the actuator 5, and the fusible metal sheet 7 is connected to the actuator 5; the upper sealing strip 8 and the lower sealing strip 9 are riveted and fixed at the overlapping parts between the blades 2 and on the side strips 4; the upper sealing strip 8 is a rectangular strip structure made of graphite, and there are two protrusions with an isosceles trapezoidal cross-section above the rectangular strip structure, and there is one at each overlapping part of the blades 2 for the upper sealing strip 8. The protrusions of the upper sealing strip 8 are clamped and matched with the grooves on the lower sealing strip 9, and the sealing effect is good; the lower sealing strip 9 is a rectangular strip structure made of graphite, and there are two grooves with an isosceles trapezoidal cross-section opened on the rectangular strip structure, and there is one at each overlapping part of the blades 2 for the lower sealing strip 9. Through the clamping and sealing of the upper sealing strip 8 and the lower sealing strip 9, the sealing performance is good, preventing the entry of smoke and dust, and having a high temperature resistance.

[0023] Specific implementation steps:

[0024] During normal ventilation, the blades 2 are in a parallel state, and air circulates through the spaces between the blades 2. When a fire occurs and the temperature of the flue gas is relatively high, reaching the melting temperature of the fusible metal sheet 7, the fusible metal sheet 7 melts upon heating, and the actuator 5 acts to drive the blades 2 to close. The upper sealing strip 8 and the lower sealing strip 9 are clamped to achieve sealing, sealing the ventilation air duct, preventing the diffusion of smoke, and playing a fire prevention role.

[0025] In summary, for the high-temperature resistant and fireproof air duct valve, the lower sealing strip is a rectangular strip structure made of graphite. There are two grooves with an isosceles trapezoid cross-section on the rectangular strip structure. And at each overlapping part of the blade, there is a lower sealing strip arranged. Through the clamping and sealing of the upper sealing strip and the lower sealing strip, the sealing performance is good, preventing the entry of soot, and the graphite has a high temperature tolerance. Through the arrangement that the upper sealing strip and the lower sealing strip are riveted and fixed at the overlapping parts and the side strips between the blades, the installation of the upper sealing strip and the lower sealing strip is simple and firm, which is convenient for production. Through the improvement of the high-temperature resistant and fireproof air duct valve, the utility model has the advantages of simple and firm installation, good sealing performance, and prevention of the entry of soot, thus effectively solving the problems and deficiencies in the existing device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant and fireproof air duct valve, comprising: Outer frame (1), blade (2), rotating shaft (3), side strip (4), actuator (5), reset handle (6), fusible metal sheet (7), upper sealing strip (8), lower sealing strip (9); It is characterized in that: the outer frame (1) is a frame structure in the shape of the Chinese character "kou", and both ends of the rotating shaft (3) are inserted and connected to the outer frame (1) to form a rotating device; the blade (2) is welded and fixed on the outer wall of the rotating shaft (3); the side strip (4) is welded and fixed on the inner walls on both sides of the outer frame (1); the actuator (5) is fixedly installed above the outer frame (1); the reset handle (6) is fixed above the actuator (5) by bolts; the fusible metal sheet (7) is arranged below the actuator (5), and the fusible metal sheet (7) is connected to the actuator (5); the upper sealing strip (8) and the lower sealing strip (9) are riveted and fixed at the overlapping joints between the blades (2) and on the side strip (4).

2. A high temperature resistant and fireproof air duct valve according to claim 1, characterized in that: The upper sealing strip (8) is a rectangular strip structure made of graphite, and there are two protrusions with an isosceles trapezoidal cross-section above the rectangular strip structure, and there is one at each overlapping joint of the blade (2).

3. The high temperature resistant and fireproof air duct valve according to claim 1, characterized in that: The lower sealing strip (9) is a rectangular strip structure made of graphite, and there are two grooves with an isosceles trapezoidal cross-section opened on the rectangular strip structure, and there is one at each overlapping joint of the blade (2).

4. The high temperature resistant and fireproof air duct valve according to claim 1, characterized in that: The blade (2) is a bent plate-like structure, and the overlapping joints of adjacent blades (2) are parallel to each other after closing.

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