Fireproof valve with flow guide and smoke exhaust functions
By adopting thermal alloy rods and multi-layer baffle structures in the fire valve, the existing smoke exhaust fire valves have been solved, and the rapid barrier and fire protection effect of high-temperature flue gas is achieved, which has improved the Structure strength and sensitivity.
Patent Information
- Application Number
- CN202420732536.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-10
AI Technical Summary
When the existing smoke exhaust fire valve is closed quickly, the blades are easily damaged, have poor sealing, cannot effectively prevent fire, and cannot effectively resist the impact of high-temperature flue gas.
A fire valve with diversion and smoke exhaust function was designed, adopting a thermal alloy rod and a multi-layer baffle structure. When the flue gas temperature reaches 280 degrees Celsius, the thermal alloy rod melts, driving the baffle to slide, realizing the high-temperature smoke. The rapid barrier of gas has a simple structure, low cost and high strength.
It achieves rapid barrier to high-temperature flue gas, improves fire resistance, enhances the sensitivity and heat resistance of the structure, and can withstand more severe flue gas heat wave impacts.
Smart Images
Figure CN222142114U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of smoke exhaust devices in flues, and more specifically to a fire damper with the function of guiding and exhausting smoke. Background Art
[0002] The smoke exhaust fire damper is a fire protection component, which is usually installed on the pipe of the mechanical smoke exhaust system. It is usually open and will be opened to exhaust smoke when a fire occurs. It will be closed when the smoke temperature in the smoke exhaust pipe reaches 280 degrees. It will meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, and play the role of smoke isolation and fire resistance. Main materials: carbon steel, galvanized plate, stainless steel.
[0003] The existing smoke exhaust fire damper has blades that directly contact the inner wall of the valve body during rapid closing, which can damage the blades and easily cause air leakage at the joints. The damper has poor sealing performance and cannot achieve good fire prevention effects against high-temperature smoke. In addition, the blades are easily damaged by the impact of smoke heat waves. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the utility model provides a fire damper with a smoke diversion and exhaust function, which has the advantages of rapid blocking of high-temperature smoke and high sensitivity. It has a simple structure, low cost, and higher structural strength and can withstand more severe smoke heat wave impacts.
[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fire damper with a smoke diversion and exhaust function, comprising a valve body and a pulling rope, mounting flanges are provided on both sides of the valve body, a storage box with a bottom opening and a hollow structure is fixed to the upper surface of the valve body, the storage box is communicated with the interior of the valve body, a groove is provided on the inner wall of the valve body, a first baffle is fixed in the storage box, a second baffle is slidably fitted with a second baffle on one side of the first baffle, a third baffle is slidably fitted with a third baffle on one side of the second baffle, a fourth baffle is slidably fitted with a fourth baffle on one side, a support plate is fixed to the bottom of the fourth baffle, two binding rods are fixed to the upper surface of the storage box, the bottom ends of the two pulling ropes are bound and fixed with a thermosensitive alloy rod, and the top end of the pulling rope slides through the fourth baffle and the storage box in turn and is tied to the binding rod.
[0006] As a preferred technical solution of the utility model, a receiving groove is provided at the bottom of the storage box, the first baffle is fixed on the inner wall of the receiving groove, and a through groove connected to the receiving groove is provided at the top of the valve body.
[0007] As a preferred technical solution of the utility model, the second baffle, the third baffle and the fourth baffle are all slidably fitted in the groove, and the melting point of the thermosensitive alloy rod is 280 degrees Celsius.
[0008] As a preferred technical solution of the utility model, a second through hole is opened on the fourth baffle, and the pulling rope slides through the second through hole.
[0009] As a preferred technical solution of the utility model, a first through hole is opened on the storage box, and the pull rope slides through the first through hole.
[0010] As a preferred technical solution of the utility model, a T-shaped groove is opened on one side of the first baffle plate, the second baffle plate and the third baffle plate, and a T-shaped slider is fixed on one side of the fourth baffle plate, the third baffle plate and the second baffle plate, and the first baffle plate, the second baffle plate, the third baffle plate and the fourth baffle plate are in sliding contact with each other.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] In the utility model, when the temperature of the flue gas passing through the valve body reaches 280 degrees Celsius, the thermistor alloy rod will melt after being heated. At this time, due to the lack of the barrier of the thermistor alloy rod, the second through hole can no longer lift the fourth baffle. At this time, the fourth baffle will vertically drop in the groove under the action of gravity, thereby driving the third baffle and the second baffle folded in the storage box to slide down and unfold, thereby quickly blocking the high-temperature flue gas to achieve a fire prevention effect. The utility model has a simple structure, low cost, and high sensitivity. The first baffle, the second baffle, the third baffle and the fourth baffle slide with each other, and the structural strength is higher, which can withstand more severe flue gas heat wave impact. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the valve body in the utility model;
[0015] Figure 3 It is a structural schematic diagram of the storage box, the first baffle, the second baffle, the third baffle, and the fourth baffle when they are connected in the utility model;
[0016] Figure 4 It is a schematic diagram of the structure of the utility model when A is enlarged;
[0017] Figure 5 for Figure 4 Schematic diagram of the bottom structure;
[0018] Figure 6 It is a schematic diagram of the structure when B in the utility model is enlarged;
[0019] Figure 7 It is a structural schematic diagram of the storage box in the utility model;
[0020] Figure 8It is a schematic diagram of the structure when the first baffle, the second baffle, the third baffle and the fourth baffle of the utility model are unfolded;
[0021] Fig. 9 It is a schematic diagram of the structure of the first baffle, the second baffle, the third baffle and the fourth baffle when they are disassembled in the utility model.
[0022] In the figure: 1. valve body; 2. mounting flange; 3. storage box; 4. binding rod; 5. pulling rope; 6. groove; 7. through groove; 8. storage groove; 9. first through hole; 10. first baffle; 11. second baffle; 12. third baffle; 13. fourth baffle; 14. support plate; 15. T-shaped slider; 16. second through hole; 17. thermal alloy rod; 18. T-shaped slot. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] like Figures 1 to 9 As shown, the utility model provides a fire damper with a function of guiding and exhausting smoke, including a valve body 1 and a pull rope 5. Both sides of the valve body 1 are provided with mounting flanges 2. A storage box 3 with a bottom opening and a hollow structure is fixed on the upper surface of the valve body 1. The storage box 3 is connected to the inside of the valve body 1. A groove 6 is provided on the inner side wall of the valve body 1. A first baffle 10 is fixed in the storage box 3. A second baffle 11 is slidably matched on one side of the first baffle 10. A third baffle 12 is slidably matched on one side of the second baffle 11. A fourth baffle 13 is slidably matched on one side of the third baffle 12. A support plate 14 is fixed to the bottom of the baffle 13, two binding rods 4 are fixed to the upper surface of the storage box 3, and the bottom ends of the two pulling ropes 5 are bound and fixed with thermosensitive alloy rods 17. The top ends of the pulling ropes 5 slide through the fourth baffle 13 and the storage box 3 in turn and are tied to the binding rods 4. The melting point of the thermosensitive alloy rod 17 is 280 degrees Celsius. When the temperature of the flue gas passing through the valve body 1 reaches 280 degrees Celsius, the thermosensitive alloy rod 17 will melt after being heated, and the second baffle 11, the third baffle 12 and the fourth baffle 13 will drive each other to slide down, thereby achieving rapid blocking of the high-temperature flue gas.
[0025] Among them, a storage groove 8 is opened at the bottom of the storage box 3, the first baffle 10 is fixed on the inner wall of the storage groove 8, a through groove 7 connected with the storage groove 8 is opened on the top of the valve body 1, the second baffle 11, the third baffle 12 and the fourth baffle 13 are all slidably fitted in the groove 6, the fourth baffle 13 is opened on the second through hole 16, the pulling rope 5 slides through the second through hole 16, and a first through hole 9 is opened on the storage box 3, and the pulling rope 5 slides through the first through hole 9.
[0026] The top end of the first baffle plate 10 passes through the second through hole 16 and the first through hole 9 in sequence, and slides through the fourth baffle plate 13 and the storage box 3 in sequence.
[0027] Among them, a T-shaped groove 18 is opened on one side of the first baffle 10, the second baffle 11, and the third baffle 12, and a T-shaped slider 15 is fixed on one side of the fourth baffle 13, the third baffle 12, and the second baffle 11, so that the first baffle 10, the second baffle 11, the third baffle 12 and the fourth baffle 13 are in sliding contact with each other.
[0028] During the sliding of the fourth baffle 13, the T-shaped slider 15 on the fourth baffle 13 slides in the T-shaped groove 18. When the T-shaped slider 15 slides to the bottom, it will drive the third baffle 12 folded in the storage box 3 to slide down, and the third baffle 12 will drive the second baffle 11 to slide down, thereby realizing the sliding and unfolding of the fourth baffle 13, the third baffle 12 and the second baffle 11, and the bottom surface of the support plate 14 will contact the low wall of the groove 6.
[0029] The working principle and use process of this utility model:
[0030] The valve body 1 is fixedly connected to the smoke exhaust duct through the mounting flange 2. When the smoke temperature passing through the valve body 1 reaches 280 degrees Celsius, the thermistor alloy rod 17 will melt after being heated. At this time, due to the lack of the barrier of the thermistor alloy rod 17, the second through hole 16 can no longer lift the fourth baffle 13. At this time, the fourth baffle 13 will vertically drop in the groove 6 under the action of gravity, and the T-shaped slider 15 on the fourth baffle 13 will slide in the T-shaped groove 18. When the T-shaped slider 15 slides down to the bottom, it will drive the third baffle 12 folded in the storage box 3 to slide down, and the third baffle 12 will drive the second baffle 11 to slide down, thereby realizing the fourth baffle 13, the third baffle 12 and the second baffle 11 to slide down and unfold, and the bottom surface of the support plate 14 will contact the low wall of the groove 6, thereby achieving the barrier of high-temperature smoke and achieving the fire prevention effect.
[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fire damper with a function of guiding and exhausting smoke, comprising a valve body (1), both sides of the valve body (1) being provided with mounting flanges (2), characterized in that: The valve body (1) further comprises two pulling ropes (5). A storage box (3) with a bottom opening and a hollow structure is fixed on the upper surface of the valve body (1). The storage box (3) is connected to the inside of the valve body (1). A groove (6) is provided on the inner wall of the valve body (1). A first baffle (10) is fixed in the storage box (3). A second baffle (11) is slidably matched on one side of the first baffle (10). A third baffle (12) is slidably matched on one side of the second baffle (11). A fourth baffle (13) is slidably matched on one side of the third baffle (12). A support plate (14) is fixed at the bottom of the fourth baffle (13). Two binding rods (4) are fixed on the upper surface of the storage box (3). The bottom ends of the two pulling ropes (5) are both bound and fixed with a thermosensitive alloy rod (17). The top end of the pulling rope (5) slides through the fourth baffle (13) and the storage box (3) in turn and is then bound to the binding rod (4).
2. The fire damper with smoke diversion and exhaust function according to claim 1, characterized in that: The storage box (3) has a receiving groove (8) at the bottom, the first baffle (10) is fixed on the inner wall of the receiving groove (8), and the valve body (1) has a through groove (7) at the top that is connected to the receiving groove (8).
3. The fire damper with smoke diversion and exhaust function according to claim 1, characterized in that: The second baffle (11), the third baffle (12) and the fourth baffle (13) are all slidably fitted in the groove (6), and the melting point of the heat-sensitive alloy rod (17) is 280 degrees Celsius.
4. The fire damper with smoke diversion and exhaust function according to claim 1, characterized in that: The fourth baffle plate (13) is provided with a second through hole (16), and the pull rope (5) slides through the second through hole (16).
5. The fire damper with smoke diversion and exhaust function according to claim 1, characterized in that: The storage box (3) is provided with a first through hole (9), and the pull rope (5) slides through the first through hole (9).
6. The fire damper with smoke diversion and exhaust function according to claim 1, characterized in that: A T-shaped slot (18) is provided on one side of the first baffle plate (10), the second baffle plate (11) and the third baffle plate (12); a T-shaped slider (15) is fixed on one side of the fourth baffle plate (13), the third baffle plate (12) and the second baffle plate (11); and the first baffle plate (10), the second baffle plate (11), the third baffle plate (12) and the fourth baffle plate (13) are in sliding contact with each other.