Smoke exhaust valve with high-temperature-resistant automatic sealing function

Abstract

The utility model discloses a smoke exhaust valve with a high-temperature-resistant automatic sealing function, relates to the technical field of smoke exhaust valves, and aims to solve the problems that the pressure of a sealing ring of a traditional structure is difficult to adjust along with the temperature, the sealing is poor, leakage is easy to occur, the traditional structure collapses at high temperature, the safety of a smoke exhaust system is reduced, and the leakage risk is increased. An automatic adjusting mechanism is arranged on the inner side of the smoke exhaust valve pipe and comprises a limiting annular seat, the outer side of the limiting annular seat is fixedly connected with the inner side of the smoke exhaust valve pipe, a rotating circular ring is arranged on the inner side of the limiting annular seat, and an elastic sealing gasket is movably connected to the outer side of the rotating circular ring. The outer side of the elastic sealing gasket is fixedly connected with an air cushion ring. The smoke exhaust valve with the high-temperature-resistant automatic sealing function has the effects that the pressure of the sealing ring is adjusted in real time along with the temperature, the sealing performance is kept, leakage is prevented, the sealing performance is good at the high temperature, the safety of a smoke exhaust system is improved, and the hidden danger of smoke leakage is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust valve technology, and in particular to a smoke exhaust valve with high temperature resistance and automatic sealing function. Background Technology

[0002] Smoke exhaust valves are valves installed at the ends (smoke inlets) of each branch pipe in a mechanical smoke exhaust system. They are normally closed and meet the air leakage requirements. They are opened manually or electrically in case of fire or when smoke exhaust is required, and serve to exhaust smoke. Smoke exhaust valves are usually installed in the upper part of the building space or in the ceiling, and are mainly used on the ducts of the smoke exhaust system.

[0003] Traditional structures cannot adjust the sealing ring pressure according to temperature, resulting in poor sealing performance and easy leakage. The sealing performance drops sharply at high temperatures, reducing the safety of the smoke exhaust system, increasing the risk of flue gas leakage, causing poor sealing and frequent leakage, and the seal collapses at high temperatures, compromising the safety of the smoke exhaust system. Utility Model Content

[0004] This utility model discloses a smoke exhaust valve with high temperature resistance and automatic sealing function, which aims to solve the technical problems of traditional structures being unable to adjust the sealing ring pressure according to temperature, resulting in poor sealing and easy leakage, and the seal collapsing at high temperatures, which reduces the safety of the smoke exhaust system and increases the risk of leakage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-temperature resistant, automatically sealing smoke exhaust valve includes a smoke exhaust valve pipe. An automatic adjustment mechanism is provided on the inner side of the smoke exhaust valve pipe. The automatic adjustment mechanism includes a limiting annular seat. The outer side of the limiting annular seat is fixedly connected to the inner side of the smoke exhaust valve pipe. A rotating ring is provided on the inner side of the limiting annular seat. An elastic sealing gasket is movably connected to the outer side of the rotating ring. An air gasket is fixedly connected to the outer side of the elastic sealing gasket. An air inlet is fixedly connected to the outer side of the air gasket. An air inlet pipe is fixedly connected to the inner side of the air inlet. A water tank is fixedly connected to one end of the air inlet pipe. A fixing seat is fixedly connected to the outer side of the water tank. The bottom end of the fixing seat is fixedly connected to the inner side of the smoke exhaust valve pipe.

[0007] Equipped with a smoke exhaust valve pipe and an automatic adjustment mechanism, when the smoke exhaust system is not in operation and the smoke exhaust valve pipe is at room temperature, the rotating ring in the automatic adjustment mechanism remains relatively stationary inside the limiting ring seat, and the elastic sealing gasket is in contact with the rotating ring. When the smoke exhaust system starts operating, the internal temperature of the smoke exhaust valve gradually rises. As the temperature continues to rise, the water in the water tank undergoes increased thermal motion of water molecules due to the increased temperature, and some of the water vaporizes into water vapor. The water vapor enters the air cushion ring through the air inlet pipe. As the air cushion ring is continuously inflated, its volume gradually expands. Because the outer side of the air cushion ring is connected to the air inlet, and the air inlet is relatively fixed to the inner side of the smoke exhaust valve pipe, the air... The gasket can only compress the elastic sealing gasket inwards. The compressed elastic sealing gasket transmits the pressure applied by the gasket to the rotating ring. Since the rotating ring is movable inside the limiting ring seat and the limiting ring seat is fixed to the exhaust valve pipe, the pressure is further transmitted towards the sealing ring. The sealing ring receives additional pressure from the elastic sealing gasket and the rotating ring, making it fit even more tightly against the inside of the exhaust valve pipe. At the same time, the outer side of the limiting ring seat is fixedly connected to the sealing ring, limiting the possible displacement of the sealing ring when subjected to pressure, ensuring that it can stably withstand additional pressure, thereby maintaining tight contact, enhancing the sealing effect, and preventing high-temperature flue gas leakage.

[0008] In a preferred embodiment, symmetrical sealing rings are fixedly connected to the inner side of the smoke exhaust valve pipe. The outer sides of the sealing rings are fixedly connected to the outer sides of the limiting annular seat. Spring rings are fixedly connected to the outer sides of the elastic sealing gaskets. The end of the spring ring away from the elastic sealing gasket is fixedly connected to the outer side of the annular limiting seat. An adaptation seat is fixedly connected to the inner side of each spring ring. A connecting rod is fixedly connected to the bottom end of each adaptation seat. A presser is fixedly connected to the bottom end of each connecting rod. The outer side of the presser is in contact with the outer side of the air cushion ring. An automatic opening and closing rod is movably connected to the inner side of the smoke exhaust valve pipe. An opening and closing door is movably connected to the outer side of the automatic opening and closing rod. A temperature sensor is fixedly connected to the outer side of the smoke exhaust valve pipe.

[0009] The system is equipped with an opening and closing door, a temperature sensor, an automatic opening and closing rod, a sealing ring, a spring ring, an adapting seat, a connecting rod, and a presser. When the smoke exhaust system is running, the temperature inside the smoke exhaust valve pipe rises, causing the air cushion to inflate and expand, pushing the presser. The presser, driven by the connecting rod, applies pressure to the spring ring through the adapting seat. The spring ring is stressed, and the elastic sealing gasket is compressed, transmitting pressure to the air cushion and enhancing the sealing effect. Simultaneously, the opening and closing door opens under the action of the automatic opening and closing rod, allowing smoke to escape. As the smoke exhaust process continues, the temperature sensor monitors a decrease in the temperature inside the smoke exhaust valve pipe, indicating a change from high temperature to high temperature. When the water vapor that enters the air cushion is cooled, it condenses back into water droplets. Due to gravity, the water droplets flow back to the water tank through the air inlet pipe. As the water vapor decreases, the pressure and volume of the air cushion decrease. At this time, the compressed spring ring loses external pressure and begins to reset, causing the adaptation seat to move upward. This, in turn, pulls up the presser through the connecting rod. During the reset process of the spring ring, the presser, as it rises, helps to drain any condensate that may remain inside the air cushion. The movement of the presser breaks the stillness of the accumulated water, helping it flow down the inner wall of the air cushion and back into the water tank.

[0010] In a preferred embodiment, an auxiliary adjustment component is provided on the inner side of the automatic adjustment mechanism. The auxiliary adjustment component includes a bidirectional telescopic rod, and both ends of the bidirectional telescopic rod are fixedly connected to movable seats. A compression spring is provided on the outer side of the bidirectional telescopic rod, and both ends of the compression spring are fixedly connected to the opposite side of the movable seat. Moving rods are movably connected to both sides of the movable seat. Linkage rods are movably connected to the inner side of the bottom end of each moving rod. Fixed rods are movably connected between the inner side of the bottom end of each of the multiple moving rods and the inner side of the top end of the linkage rods. Linkage seats are fixedly connected to both ends of the fixed rods, and adjustment rods are fixedly connected to the outer side of each linkage seat. Arc-shaped auxiliary seats are fixedly connected to the front end of the adjustment rods and the front end of the movable seat. The outer side of the arc-shaped auxiliary seats is in contact with the outer side of the air cushion.

[0011] With the addition of an auxiliary adjustment component, when the temperature inside the exhaust valve pipe rises, the automatic adjustment mechanism is activated, and the air cushion begins to inflate and expand. As the air cushion increases in volume, it exerts an outward thrust on the arc-shaped auxiliary seat. This thrust pushes the movable seat away from the center of the bidirectional telescopic rod. Since the movable seat is connected to the bidirectional telescopic rod, the rod begins to stretch, and the compression spring also extends due to the tensile force. As the movable seat moves, it drives the moving rods connected to its two sides to move. The moving rods rotate around their connection point with the movable seat, and their bottom ends, via fixed rods, drive the linkage rods to move. The movement of the linkage rods causes the linkage seats on both sides to move synchronously. Furthermore, the adjustment rods further assist the movement of the movable seat and the arc-shaped auxiliary seat, allowing the arc-shaped auxiliary seat to better conform to the expansion and deformation of the air cushion. The auxiliary support and guide function of the air cushion provides auxiliary support for its expansion, ensuring uniform expansion and preventing excessive local deformation. When the temperature drops, the air cushion begins to deflate and contract. At this time, the compression spring, having stored elastic potential energy from its previous stretching, begins to contract and reset, pushing the movable seat towards the center of the bidirectional telescopic rod. The movement of the movable seat causes the moving rod to rotate in the opposite direction. The moving rod, through the fixed rod, pulls the linkage rod to move in the opposite direction. The linkage rod then moves the linkage seat, which, through the adjusting rod, causes the arc-shaped auxiliary seat to follow the movable seat in the direction of air cushion contraction. During this movement, the arc-shaped auxiliary seat gently squeezes the air cushion, assisting in its contraction and helping to expel any remaining gas, allowing it to return to its initial state more quickly and preparing for the next temperature change.

[0012] As can be seen from the above, the exhaust valve with high temperature resistance and automatic sealing function provided by this utility model has the technical effect of automatically adjusting the sealing ring pressure in real time according to the temperature, ensuring sealing performance, preventing leakage, good sealing at high temperature, improving the safety of the exhaust system, and eliminating the hidden danger of smoke leakage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a smoke exhaust valve with high temperature resistance and automatic sealing function proposed in this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of a smoke exhaust valve with high-temperature resistance and automatic sealing function proposed in this utility model.

[0015] Figure 3 This is a schematic diagram of the pressurizer structure of a smoke exhaust valve with high temperature resistance and automatic sealing function proposed in this utility model.

[0016] Figure 4 This is a schematic diagram of the automatic adjustment mechanism of a smoke exhaust valve with high temperature resistance and automatic sealing function proposed in this utility model.

[0017] Figure 5This is a schematic diagram of the auxiliary adjustment component structure of a smoke exhaust valve with high temperature resistance and automatic sealing function proposed in this utility model.

[0018] In the attached diagram: 1. Smoke exhaust valve pipe; 2. Opening / closing door; 3. Temperature sensor; 4. Automatic opening / closing rod; 5. Sealing ring; 6. Automatic adjustment mechanism; 601. Annular limit seat; 602. Rotating ring; 603. Elastic sealing gasket; 604. Air cushion ring; 605. Air inlet; 606. Air inlet pipe; 607. Water tank; 608. Fixed seat; 7. Spring ring; 8. Adaptive seat; 9. Connecting rod; 10. Pressing device; 11. Auxiliary adjustment assembly; 1101. Bidirectional telescopic rod; 1102. Movable seat; 1103. Arc-shaped auxiliary seat; 1104. Moving rod; 1105. Linkage seat; 1106. Fixed rod; 1107. Linkage rod; 1108. Adjusting rod; 1109. Compression spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] The present invention discloses a smoke exhaust valve with high temperature resistance and automatic sealing function, which is mainly used in scenarios where the traditional structure cannot adjust the sealing ring pressure with temperature, resulting in poor sealing performance, easy leakage, and a sharp drop in sealing performance at high temperatures, thereby reducing the safety of the smoke exhaust system and increasing the risk of smoke leakage.

[0021] Reference Figures 1-5 A high-temperature resistant automatic sealing smoke exhaust valve includes a smoke exhaust valve pipe 1. An automatic adjustment mechanism 6 is provided on the inner side of the smoke exhaust valve pipe 1. The automatic adjustment mechanism 6 includes a limiting ring seat. The outer side of the limiting ring seat is bolted to the inner side of the smoke exhaust valve pipe 1. A rotating ring 602 is provided on the inner side of the limiting ring seat. An elastic sealing gasket 603 is rotatably connected to the outer side of the rotating ring 602. An air gasket 604 is fixedly connected to the outer side of the elastic sealing gasket 603. An air inlet 605 is bolted to the outer side of the air gasket 604. An air inlet pipe 606 is bolted to the inner side of the air inlet 605. One end of the air inlet pipe 606 is bolted to a water tank 607. A fixing seat 608 is bolted to the outer side of the water tank 607. The bottom end of the fixing seat 608 is bolted to the inner side of the smoke exhaust valve pipe 1.

[0022] Reference Figure 2 , Figure 3 and Figure 4In a preferred embodiment, a sealing ring 5 is bolted to the inner side of the smoke exhaust valve pipe 1, and the outer side of the sealing ring 5 is bolted to the outer side of the limiting ring seat. Symmetrical spring rings 7 are bolted to the outer side of the elastic sealing gasket 603. The end of the spring ring 7 away from the elastic sealing gasket 603 is bolted to the outer side of the ring limiting seat 601. An adaptation seat 8 is bolted to the inner side of each spring ring 7. A connecting rod 9 is bolted to the bottom end of each adaptation seat 8. A presser 10 is bolted to the bottom end of each connecting rod 9. The outer side of the presser 10 is in contact with the outer side of the air cushion ring 604. An automatic opening and closing rod 4 is rotatably connected to the inner side of the smoke exhaust valve pipe 1. An opening and closing door 2 is rotatably connected to the outer side of the automatic opening and closing rod 4. A temperature sensor 3 is bolted to the outer side of the smoke exhaust valve pipe 1.

[0023] Reference Figure 2 and Figure 5 In a preferred embodiment, an auxiliary adjustment component 11 is provided inside the automatic adjustment mechanism 6. The auxiliary adjustment component 11 includes a bidirectional telescopic rod 1101, and both ends of the bidirectional telescopic rod 1101 are bolted to movable seats 1102. A compression spring 1109 is provided on the outer side of the bidirectional telescopic rod 1101. The two ends of the compression spring 1109 are bolted to the opposite side of the movable seat 1102. Both sides of the movable seat 1102 are rotatably connected to moving rods 1104. The inner side of the bottom end of the moving rod 1104 is... All are rotatably connected by linkage rods 1107. The bottom ends of multiple moving rods 1104 and the inner top of linkage rods 1107 are rotatably connected by fixed rods 1106. Both ends of fixed rods 1106 are bolted to linkage seats 1105. The outer side of linkage seats 1105 is bolted to adjusting rods 1108. The front end of adjusting rods 1108 and the front end of moving seats 1102 are bolted to arc-shaped auxiliary seats 1103. The outer side of arc-shaped auxiliary seats 1103 is in contact with the outer side of air cushions 604.

[0024] Working principle: When the smoke exhaust system is not working and the smoke exhaust valve pipe 1 is at room temperature, the rotating ring 602 in the automatic adjustment mechanism 6 remains relatively stationary inside the limiting ring seat, and the elastic sealing gasket 603 is in contact with the rotating ring 602. When the smoke exhaust system starts to operate, the internal temperature of the smoke exhaust valve gradually increases. As the temperature continues to rise, the water in the water tank 607 undergoes increased thermal motion of water molecules due to the increased temperature, and some of the water vaporizes to form water vapor. The water vapor enters the air cushion 604 through the air inlet pipe 606. As the air cushion 604 is continuously inflated, its volume gradually expands. Since the outer side of the air cushion 604 is connected to the air inlet 605, the air inlet 605... It is fixed relative to the inside of the exhaust valve pipe 1. The air ring 604 can only squeeze the elastic sealing gasket 603 inward. The squeezed elastic sealing gasket 603 transmits the pressure applied by the air ring 604 to the rotating ring 602. Since the rotating ring 602 is movable inside the limiting ring seat and the limiting ring seat is fixed to the exhaust valve pipe 1, the pressure is further transmitted to the sealing ring 5. The sealing ring 5 receives additional pressure from the elastic sealing gasket 603 and the rotating ring 602, and is further tightly fitted to the inside of the exhaust valve pipe 1. At the same time, the outer side of the limiting ring seat is fixedly connected to the sealing ring 5, which limits the possible displacement of the sealing ring 5 when it is subjected to pressure.

[0025] When the temperature inside the exhaust valve pipe 1 rises, the automatic adjustment mechanism 6 is activated, and the air cushion 604 begins to inflate and expand. As the volume of the air cushion 604 increases, it exerts an outward thrust on the arc-shaped auxiliary seat 1103. Under this thrust, the movable seat 1102 moves away from the center of the bidirectional telescopic rod 1101. Since the movable seat 1102 is connected to the bidirectional telescopic rod 1101, the bidirectional telescopic rod 1101 begins to stretch. Simultaneously, the compression spring 1109 also stretches under the tensile force. When 02 moves, it drives the moving rods 1104 connected to both sides to move. The moving rods 1104 rotate around the connection point with the movable seat 1102. Its bottom end drives the linkage rod 1107 to move through the fixed rod 1106. The movement of the linkage rod 1107 causes the linkage seats 1105 on both sides to move synchronously. Then, the adjusting rod 1108 further assists the movement of the movable seat 1102 and the arc-shaped auxiliary seat 1103, so that the arc-shaped auxiliary seat 1103 can better fit the expansion and deformation of the air cushion 604. The expansion of the air cushion 604 provides auxiliary support and guidance, ensuring that the air cushion 604 expands evenly and avoids excessive local deformation. When the temperature decreases, the air cushion 604 begins to deflate and contract. At this time, the compression spring 1109, having stored elastic potential energy from its previous stretching, begins to contract and reset, pushing the movable seat 1102 towards the center of the bidirectional telescopic rod 1101. The movement of the movable seat 1102 causes the moving rod 1104 to rotate in the opposite direction. The moving rod 1104 pulls the linkage rod 1107 in the opposite direction via the fixed rod 1106. The linkage rod 1107 drives the linkage seat 1105 to move, which in turn causes the arc-shaped auxiliary seat 1103 to follow the movable seat 1102 in the direction of the air cushion 604's contraction via the adjusting rod 1108. During the movement, the arc-shaped auxiliary seat 1103 gently squeezes the air cushion 604, assisting in its contraction and helping to expel the remaining gas inside the air cushion 604, allowing it to return to its initial state more quickly and prepare for the next temperature change.

[0026] When the smoke exhaust system is running, the temperature inside the smoke exhaust valve pipe 1 rises, causing the air gasket 604 to inflate and expand, pushing the presser 10. Driven by the connecting rod 9, the presser 10 applies pressure to the spring ring 7 via the adapting seat 8. The spring ring 7 is under pressure, and at this time, the elastic sealing gasket 603 is compressed, transmitting pressure to the air gasket 604 and enhancing the sealing effect. Simultaneously, the opening / closing door 2 opens under the action of the automatic opening / closing rod 4 to exhaust smoke. As the smoke exhaust process continues, the temperature sensor 3 detects a decrease in the temperature inside the smoke exhaust valve pipe 1. Water vapor that vaporized at high temperatures and entered the air gasket 604 condenses back into water droplets upon encountering the cold air. Due to gravity, water droplets flow back to the water tank 607 along the air inlet pipe 606. The pressure of the air cushion 604 decreases and its volume shrinks due to the reduction of water vapor. At this time, the compressed spring ring 7 loses external pressure and begins to reset, driving the adaptation seat 8 to move upward. This, in turn, pulls up the pressure device 10 through the connecting rod 9. During the reset process of the spring ring 7, the pressure device 10 plays an auxiliary role in draining any condensate that may remain in the air cushion 604 as it rises. The movement of the pressure device 10 breaks the static state of the accumulated water, helping it to flow down the inner wall of the air cushion 604 and back into the water tank 607.

[0027] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A smoke exhaust valve having a high-temperature-resistant automatic sealing function, comprising a smoke exhaust valve pipe (1), characterized in that, The inner side of the smoke exhaust valve pipe (1) is provided with an automatic adjusting mechanism (6), the automatic adjusting mechanism (6) comprises a limiting annular seat, the outer side of the limiting annular seat is fixedly connected with the inner side of the smoke exhaust valve pipe (1), the inner side of the limiting annular seat is provided with a rotating circular ring (602), the outer side of the rotating circular ring (602) is movably connected with an elastic sealing pad (603), the outer side of the elastic sealing pad (603) is fixedly connected with an air cushion ring (604), the outer side of the air cushion ring (604) is fixedly connected with an air inlet (605), the inner side of the air inlet (605) is fixedly connected with an air inlet pipe (606), one end of the air inlet pipe (606) is fixedly connected with a water tank (607), the outer side of the water tank (607) is fixedly connected with a fixed seat (608), and the bottom end of the fixed seat (608) is fixedly connected with the inner side of the smoke exhaust valve pipe (1).

2. The smoke exhaust valve with high-temperature resistant automatic sealing function according to claim 1, characterized in that, The inner side of the smoke exhaust valve pipe (1) is fixedly connected with symmetrical sealing rings (5), the outer side of the sealing ring (5) is fixedly connected with the outer side of the limiting annular seat, and the outer side of the elastic sealing pad (603) is fixedly connected with a spring ring (7), and the end of the spring ring (7) away from the elastic sealing pad (603) is fixedly connected with the outer side of the annular limiting seat (601).

3. The smoke exhaust valve according to claim 2, characterized in that, The inner side of the spring ring (7) is fixedly connected with an adaptive seat (8), the bottom end of the adaptive seat (8) is fixedly connected with a connecting rod (9), and the bottom end of the connecting rod (9) is fixedly connected with a pressing device (10), and the outer side of the pressing device (10) is in contact with the outer side of the air cushion ring (604).

4. The smoke exhaust valve with high temperature resistant automatic sealing function according to claim 1, characterized in that, The inner side of the smoke exhaust valve pipe (1) is movably connected with an automatic opening and closing rod (4), the outer side of the automatic opening and closing rod (4) is movably connected with an opening and closing door (2), and the outer side of the smoke exhaust valve pipe (1) is fixedly connected with a temperature sensor (3).

5. The smoke exhaust valve with high temperature resistant automatic sealing function according to claim 1, characterized in that, The inner side of the automatic adjusting mechanism (6) is provided with an auxiliary adjusting assembly (11), the auxiliary adjusting assembly (11) comprises a bidirectional telescopic rod (1101), and the two ends of the bidirectional telescopic rod (1101) are fixedly connected with movable seats (1102).

6. The smoke exhaust valve according to claim 5, characterized in that The outer side of the bidirectional telescopic rod (1101) is provided with a compression spring (1109), the two ends of the compression spring (1109) are fixedly connected with the side opposite to the movable seat (1102), and the two sides of the movable seat (1102) are movably connected with moving rods (1104), and the inner side of the bottom end of the moving rod (1104) is movably connected with a linkage rod (1107).

7. The smoke exhaust valve according to claim 6, characterized in that The inner side of the bottom end of the plurality of moving rods (1104) and the top end of the linkage rod (1107) is movably connected with a fixed rod (1106), the two ends of the fixed rod (1106) are fixedly connected with linkage seats (1105), the outer side of the linkage seat (1105) is fixedly connected with an adjusting rod (1108), and the front end of the adjusting rod (1108) and the front end of the movable seat (1102) are fixedly connected with arc-shaped auxiliary seats (1103), and the outer side of the arc-shaped auxiliary seat (1103) is in contact with the outer side of the air cushion ring (604).

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