Elliptical smoke exhaust fireproof valve

Abstract

The utility model discloses an oval smoke exhaust fireproof valve which comprises a mounting frame, an inductor is arranged above the front face of the mounting frame, a plurality of connecting holes are formed in the front face of the mounting frame in a penetrating mode, a valve body is arranged in an inner cavity of the mounting frame, the inner wall of the valve body is rotationally connected with a first rotating rod, and the outer ring of the first rotating rod is connected with a sealing plate. A motor is arranged on one side of the mounting frame, one end of the motor is connected with a second rotating rod, a first U-shaped frame is arranged on the outer ring of the second rotating rod, the outer ring of the first U-shaped frame is sleeved with a connecting belt, one end of the connecting belt is connected with a second U-shaped frame, a shell is arranged on one side of the inner wall of the valve body, and a strip-shaped groove is formed in the outer ring of the shell. And through cooperative use of a first U-shaped frame, a balancing weight, a rotating rod, a motor, a connecting belt and a sealing plate, it can be ensured that the valve body can conduct smoke exhaust work to the maximum extent, and the smoke exhaust efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire dampers, in particular to an elliptical smoke exhaust fire damper. Background Art

[0002] When a fire occurs, fire dampers can prevent the spread of smoke and toxic gases, protect the respiratory system of personnel, and reduce casualties. Fire dampers are widely used and are mainly used in various buildings, such as shopping malls, hotels, hospitals, schools, office buildings, etc.

[0003] After searching, in the prior art, the utility model with publication number CN213776400U discloses a smoke exhaust fire damper, which relates to the field of fire protection equipment, and includes a housing and a frame for mounting a valve leaf, and the frame is provided with a rotating rod at both ends of either side wall along the direction of smoke flow, and the rotating rod is axially arranged along the arrangement direction of multiple valve leaves, and a sealing block is fixedly connected to the circumferential outer wall of the rotating rod, and a sealing gasket for sealing is detachably provided on the side of the sealing block facing the valve leaf, and the housing is provided with a driving assembly for driving the rotating rod to rotate. This application has the effect of ensuring the sealing between the valve leaf and the frame, improving the market share of the smoke exhaust fire damper, and has extremely strong environmental protection performance.

[0004] The invention discloses a smoke exhaust fire damper with publication number CN217519303U, and relates to the technical field of smoke exhaust fire dampers.

[0005] The above-mentioned various technical solutions make the use of fire dampers better through different methods, but the above-mentioned methods still have the following shortcomings. After the valve leaf is opened by the braking device, the smoke can be exhausted through the fire damper, but because the valve leaf is located in the fire damper, it itself will occupy part of the space in the valve, resulting in a decrease in the ventilation volume of the fire damper, affecting the smoke exhaust efficiency. Utility Model Content

[0006] The utility model aims to provide an elliptical smoke exhaust fire damper to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a mounting frame, a sensor is arranged above the front side of the mounting frame, a plurality of connecting holes are opened through the front side of the mounting frame, a valve body is arranged in the inner cavity of the mounting frame, a first rotating rod is rotatably connected to the inner wall of the valve body, a sealing plate is connected to the outer ring of the first rotating rod, a motor is arranged on one side of the mounting frame, a second rotating rod is connected to one end of the motor, a first U-shaped frame is arranged on the outer ring of the second rotating rod, a connecting belt is sleeved on the outer ring of the first U-shaped frame, one end of the connecting belt is connected to the second U-shaped frame, a shell is arranged on one side of the inner wall of the valve body, and a strip groove is opened on the outer ring of the shell.

[0008] Preferably, one end of the second U-shaped frame is fixedly connected to the sealing plate, and the connecting belt moves in the inner cavity of the strip groove.

[0009] Preferably, a counterweight block is arranged above the front surface of the sealing plate.

[0010] Preferably, a shaft rod is connected to the other side of the inner wall of the valve body, the outer ring of the shaft rod is provided with multiple clamping rings, a sleeve is provided between two of the clamping rings, the outer ring of the sleeve is connected to a sleeve, the inner cavity of the sleeve is provided with a telescopic groove, a limiting ring is provided at one end of the telescopic groove, a push rod is movably provided in the inner cavity of the limiting ring, one end of the push rod is rotatably connected to a U-shaped rotating rod, and one end of the U-shaped rotating rod is fixedly connected to the sealing plate.

[0011] Preferably, the sleeve is provided with a plurality of exhaust holes extending from the inner wall to the outer ring, one end of the push rod is connected to a piston column, and the piston column is movably disposed in the inner cavity of the telescopic slot.

[0012] Preferably, a sealing groove is provided on one side of the sealing plate, a sealing block is provided in the inner cavity of the sealing groove, the sealing block is movably provided in the inner cavity of the valve body, and the sealing groove is movably clamped to the outer ring of the valve body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The elliptical smoke exhaust fire damper is used in conjunction with a first U-shaped frame, a counterweight, a rotating rod, a motor, a connecting belt and a sealing plate. The motor drives the first U-shaped frame to rotate through the rotating rod. At this time, the connecting belt becomes loose, causing the sealing plate to lose the pulling force of the connecting belt. At this time, under the action of gravity, the sealing plate will tilt to the side of the counterweight, thereby exhausting smoke through the valve body. Since the sealing plate is not arranged in the inner cavity of the valve body, when the sealing plate is opened, the ventilation space in the valve body is relatively complete, which can ensure that the valve body can perform smoke exhaust work to the greatest extent, thereby improving the smoke exhaust efficiency of the device.

[0015] 2. The oval smoke exhaust fire damper, through the coordinated use of the exhaust hole and the piston column, can prevent the sealing plate from falling rapidly, causing impact or pulling damage to other structures of the device, thereby improving the safety of the device and making the structural design of the device more rigorous and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the utility model.

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the side structure.

[0019] Figure 4 This is a schematic diagram of the structure of the connecting belt of the utility model.

[0020] Figure 5 This is a schematic diagram of the piston column structure of the utility model.

[0021] In the figure: 1. mounting frame; 2. connecting hole; 3. first rotating rod; 4. sealing plate; 5. counterweight; 6. sealing groove; 7. sealing block; 8. motor; 9. second rotating rod; 10. first U-shaped frame; 11. connecting belt; 12. second U-shaped frame; 13. shaft rod; 14. retaining ring; 15. sleeve; 16. sleeve; 17. telescopic groove; 18. push rod; 19. limit ring; 20. piston column; 21. exhaust hole; 22. U-shaped rotating rod; 23. sensor; 24. valve body; 25. shell; 26. strip groove. DETAILED DESCRIPTION

[0022] 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.

[0023] Example: See Figure 1-5 The utility model provides a technical solution: an elliptical smoke exhaust fire damper, comprising a mounting frame 1, a sensor 23 is arranged above the front of the mounting frame 1, a plurality of connecting holes 2 are opened through the front of the mounting frame 1, a valve body 24 is arranged in the inner cavity of the mounting frame 1, a first rotating rod 3 is rotatably connected to the inner wall of the valve body 24, a sealing plate 4 is connected to the outer ring of the first rotating rod 3, a motor 8 is arranged on one side of the mounting frame 1, a second rotating rod 9 is connected to one end of the motor 8, a first U-shaped frame 10 is arranged on the outer ring of the second rotating rod 9, a connecting belt 11 is sleeved on the outer ring of the first U-shaped frame 10, a second U-shaped frame 12 is connected to one end of the connecting belt 11, a shell 25 is arranged on one side of the inner wall of the valve body 24, and a strip groove 26 is opened on the outer ring of the shell 25.

[0024] One end of the second U-shaped frame 12 is fixedly connected to the sealing plate 4 , and the connecting belt 11 moves in the inner cavity of the strip groove 26 .

[0025] A counterweight block 5 is arranged above the front surface of the sealing plate 4 .

[0026] In this embodiment, refer to Figure 2The valve body 24 is oval in shape with smoother edges, which reduces the resistance of smoke entering the valve body and prevents multiple streams of smoke from colliding with each other at the entrance of the valve body 24, thereby improving the smoke exhaust efficiency of the device;

[0027] The counterweight 5 can be made of any material and is used to ensure that the two sides of the sealing plate 4 cannot maintain balance, thereby preventing the thrust of smoke from affecting the opening of the sealing plate 4 and ensuring that the sealing plate 4 can be opened normally.

[0028] When the sensor 23 senses that the current ambient temperature is higher than the safe range, it will transmit a signal to the control center, and the control center will start the motor 8. At this time, the motor 8 drives the first U-shaped frame 10 to rotate through the second rotating rod 9. At this time, the connecting belt 11 becomes loose, so that the sealing plate 4 loses the pulling force of the connecting belt 11. At this time, under the action of gravity, the sealing plate 4 will tilt to the side of the counterweight block 5, so as to exhaust smoke through the valve body 24;

[0029] Since the sealing plate 4 is not arranged in the inner cavity of the valve body 24, when the sealing plate 4 is opened, the ventilation space in the valve body 24 is relatively complete, which can ensure that the valve body 24 can perform smoke exhaust work to the greatest extent, thereby improving the smoke exhaust efficiency of the device;

[0030] When resetting, the motor 8 drives the second rotating rod 9 to reverse, and at this time, the second rotating rod 9 drives the connecting belt 11 to be recovered through the first U-shaped frame 10, and the connecting belt 11 will be wound around the outer ring of the second rotating rod 9, and one end of the connecting belt 11 will pull back the sealing plate 4 through the second U-shaped frame 12. At this time, the sealing plate 4 performs a circular motion with the first rotating rod 3 as the center until the sealing plate 4 is level with the mounting frame 1;

[0031] The motor 8 can be a stepper motor or other device to ensure that after the motor 8 is powered off, the second rotating rod 9 can be in a locked state, so that the connecting belt 11 can maintain the tension on the sealing plate 4, or a holding brake can be installed on the motor 8 to force the second rotating rod 9 to be locked after the device is reset;

[0032] The connecting belt 11 can be made of high temperature resistant materials such as stainless steel braided belt to ensure that after the sealing plate 4 is opened, the connecting belt 11 will not be damaged by high temperature smoke, thereby improving the service life of the device.

[0033] Among them, a shaft rod 13 is connected to the other side of the inner wall of the valve body 24, and the outer ring of the shaft rod 13 is provided with multiple clamping rings 14, a sleeve ring 15 is arranged between two clamping rings 14, and the outer ring of the sleeve 15 is connected to a sleeve 16, and the inner cavity of the sleeve 16 is provided with a telescopic groove 17, and a limit ring 19 is arranged at one end of the telescopic groove 17, and a push rod 18 is movably arranged in the inner cavity of the limit ring 19, and one end of the push rod 18 is rotatably connected to a U-shaped rotating rod 22, and one end of the U-shaped rotating rod 22 is fixedly connected to the sealing plate 4.

[0034] In this embodiment, during the opening process of the sealing plate 4, the U-shaped rotating rod 22 pulls the push rod 18. At this time, the push rod 18 moves in the inner cavity of the telescopic groove 17 until it is limited by the limiting ring 19 and cannot continue to move. At this time, the sealing plate 4 has just completed the opening work, thereby pulling the other side of the sealing plate 4 to share the pulling force on the connecting belt 11 after the sealing plate 4 is opened, so as to avoid damage to the connecting belt 11.

[0035] The sleeve 16 is provided with a plurality of exhaust holes 21 from the inner wall to the outer ring. One end of the push rod 18 is connected to a piston column 20 , and the piston column 20 is movably disposed in the inner cavity of the telescopic slot 17 .

[0036] In this embodiment, refer to Figure 5 , multiple exhaust holes 21 are evenly distributed on the outer circle of the sleeve 16. When the push rod 18 is continuously pulled out, the piston column 20 will be driven to block the multiple exhaust holes 21 from top to bottom. When the number of unblocked exhaust holes 21 gradually decreases, the exhaust amount of air inside the telescopic groove 17 is also gradually reduced, thereby reducing the moving speed of the push rod 18 in the telescopic groove 17 through air pressure to slow down the falling speed of the sealing plate 4 in the process of nearly fully opening, thereby avoiding the sealing plate 4 from falling quickly, causing impact or pulling damage to the connecting belt 11, the second rotating rod 9 or the sealing plate 4 itself, so as to improve the safety of the device and make the structural design of the device more rigorous and reliable.

[0037] A sealing groove 6 is formed on one side of the sealing plate 4 , a sealing block 7 is disposed in the inner cavity of the sealing groove 6 , the sealing block 7 is movably disposed in the inner cavity of the valve body 24 , and the sealing groove 6 is movably clamped to the outer ring of the valve body 24 .

[0038] In this embodiment, the sealing groove 6 and the sealing block 7 can surround the port of the valve body 24 after the sealing plate 4 is reset to improve the sealing performance of the device to prevent smoke from leaking out after the sealing plate 4 is reset.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] 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. An elliptical smoke exhaust fire damper, comprising a mounting frame (1), characterized in that: A sensor (23) is arranged above the front of the mounting frame (1), a plurality of connection holes (2) are opened through the front of the mounting frame (1), a valve body (24) is arranged in the inner cavity of the mounting frame (1), a first rotating rod (3) is rotatably connected to the inner wall of the valve body (24), the outer ring of the first rotating rod (3) is connected to a sealing plate (4), a motor (8) is arranged on one side of the mounting frame (1), one end of the motor (8) is connected to a second rotating rod (9), a first U-shaped frame (10) is arranged on the outer ring of the second rotating rod (9), a connecting belt (11) is sleeved on the outer ring of the first U-shaped frame (10), one end of the connecting belt (11) is connected to the second U-shaped frame (12), a shell (25) is arranged on one side of the inner wall of the valve body (24), and a strip groove (26) is opened on the outer ring of the shell (25).

2. The elliptical smoke exhaust fire damper according to claim 1, characterized in that: One end of the second U-shaped frame (12) is fixedly connected to the sealing plate (4), and the connecting belt (11) moves in the inner cavity of the strip groove (26).

3. The elliptical smoke exhaust fire damper according to claim 1, characterized in that: A counterweight block (5) is arranged above the front surface of the sealing plate (4).

4. The elliptical smoke exhaust fire damper according to claim 1, characterized in that: The other side of the inner wall of the valve body (24) is connected to a shaft rod (13), the outer ring of the shaft rod (13) is provided with a plurality of retaining rings (14), a sleeve ring (15) is provided between two of the retaining rings (14), the outer ring of the sleeve ring (15) is connected to a sleeve (16), the inner cavity of the sleeve (16) is provided with a telescopic groove (17), one end of the telescopic groove (17) is provided with a limit ring (19), the inner cavity of the limit ring (19) is movably provided with a push rod (18), one end of the push rod (18) is rotatably connected to a U-shaped rotating rod (22), and one end of the U-shaped rotating rod (22) is fixedly connected to the sealing plate (4).

5. The elliptical smoke exhaust fire damper according to claim 4, characterized in that: The sleeve (16) is provided with a plurality of exhaust holes (21) extending from the inner wall to the outer ring. One end of the push rod (18) is connected to a piston column (20), and the piston column (20) is movably arranged in the inner cavity of the telescopic slot (17).

6. The elliptical smoke exhaust fire damper according to claim 1, characterized in that: A sealing groove (6) is provided on one side of the sealing plate (4), a sealing block (7) is provided in the inner cavity of the sealing groove (6), the sealing block (7) is movably arranged in the inner cavity of the valve body (24), and the sealing groove (6) is movably clamped to the outer ring of the valve body (24).

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