Boiler flue gas partition device with sealing detection function

Abstract

The invention discloses a boiler flue gas partition device with a sealing detection function, and relates to the technical field of boiler flue gas partition, the partition device comprises a metal frame, a rotating shaft, plate blades, a connecting plate, a transmission rod, a sealing assembly, a pushing assembly and a detection assembly; in order to prevent smoke from leaking from the gaps between the plate blades, the gaps can be filled through mutual insertion of the sealing assemblies, the stability of the plate blades can be improved while smoke leakage is prevented, shaking of the plate blades caused by too strong smoke flow is prevented, meanwhile, the detection assemblies can detect the sealing strength between the plate blades in real time, and if smoke leakage still exists, the detection assemblies can detect the sealing strength of the plate blades in real time. When the detection assembly is in use, the detection assembly can make a warning action, then the sealing assembly can continue to be operated, the abutting strength between the sealing assembly and the pushing assembly is enhanced, the sealing effect is improved, and smoke leakage under strong airflow is prevented from causing potential safety hazards to overhaul.

Description

Technical Field

[0001] This invention relates to the field of boiler flue gas isolation technology, specifically a boiler flue gas isolation device with a sealing detection function. Background Technology

[0002] Boiler flue gas isolation devices, also known as dampers, typically refer to baffles, valves, or isolators installed in the flue. Their main function is to safely and effectively isolate the flue gas flow without stopping the operation of the entire boiler system, so as to allow for the maintenance, repair, or replacement of components for downstream equipment.

[0003] In the partition devices used in square flues, louvered structures are mostly used as the opening and closing mechanism. This structure can adjust the ventilation area by changing the angle of the blades and can achieve the effect of closing the flue during maintenance or duct changes. However, when the louvered partition device completely closes the flue, it is difficult to achieve an absolute mechanical seal due to the influence of strong airflow. There will inevitably be a small gap between the blades, which can easily lead to flue gas leakage and pose a safety hazard to maintenance operations. At the same time, during long-term use, the blades are pushed by the air pressure of strong airflow, and gaps can easily form between the blades and the shaft, causing the blades to not be completely closed when closed, resulting in even greater flue gas leakage.

[0004] Therefore, this invention proposes a boiler flue gas isolation device with sealing detection function. Summary of the Invention

[0005] The purpose of this invention is to provide a boiler flue gas isolation device with a sealing detection function to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a boiler flue gas isolation device with a sealing detection function, the isolation device comprising a metal frame, a rotating shaft, blades, a connecting plate, a transmission rod, a sealing assembly, a pushing assembly, and a detection assembly; the two sides of the metal frame are fixedly installed to the flue gas duct; three sets of rotating shafts are provided, equidistantly distributed between the metal frames and rotatably connected to them; three sets of blades are provided, each set of blades being fixedly connected to each set of rotating shafts; the connecting plate is fixedly connected to the end of the rotating shaft; the transmission rod is rotatably connected between the connecting plates; the sealing assembly is disposed inside the blades and slidably connected to them; the pushing assembly is disposed on both sides of the sealing assembly; the detection assembly is rotatably connected to the metal frame, and the detection assembly is positioned at the same level as every two sets of blades. On the extension line of the seam; during use, boiler flue gas will flow from the flue gas duct on the left side of the metal frame to the flue gas duct on the right side. When maintenance work requires the flue gas to be intercepted and isolated, the motor under the metal frame can be started. The motor will drive the shaft under the blade in the middle position to rotate, so that the three sets of blades are in a straight line, realizing the effect of closing the duct. At the same time, the gap can be filled by the interlocking of the sealing components, which not only prevents flue gas leakage, but also improves the stability of the blades and prevents the blades from shaking due to excessive flue gas flow. The detection component can also detect the sealing strength between the blades in real time. If there is still flue gas leakage, the detection component will make a warning action. Then the sealing component can be operated to strengthen its contact strength with the pushing component, thereby improving the sealing effect and preventing flue gas leakage under strong airflow, which would cause safety hazards for maintenance.

[0007] Preferably, the sealing assembly includes a middle plate rotating rod, a middle plate gear, a middle plate rack, an insert plate, an abutment groove, a side plate rotating rod, a side plate gear, a side plate rack, a push plate, a clamping plate, a swing plate, a rubber pad, and a pull-back component; the middle plate rotating rod passes through the rotating shaft of the middle plate blade and extends into the interior of the middle plate blade; the middle plate rotating rod is rotatably connected to the middle plate blade and the rotating shaft; the middle plate gear is fixedly connected to the middle part of the middle plate rotating rod; the middle plate gear is located at the center of the middle plate blade; the middle plate rack is located on both sides of the middle plate gear; the middle plate rack is slidably connected to the middle plate blade and meshes with the middle plate gear; the abutment groove is formed at the two edges of the middle plate blade; the side plate rotating rod is rotatably connected to the plate blades on both sides of the middle plate blade and the rotating shaft; the side plate gear is fixedly connected to the middle part of the side plate rotating rod; the side plate rack is located on one side of the side plate gear and meshes with the side plate gear; the push plate... The plate and the side plate rack are fastened together. The clamping plate and the swing plate are slidably connected to the inside of the blades on both sides. The swing plate and the clamping plate are rotatably connected by a shaft. The rubber pad is attached to the outside of the swing plate, and one side of the rubber pad is inclined. The pull-back component is located inside the push plate. After the three sets of blades are in a straight line, the clamping plate can be made to abut against the groove by rotating the side plate rotating rod above the blades on both sides. At this time, the clamping plate fills the gap between the middle blade and the two side blades. Then, the middle plate rotating rod is rotated to move the insert plate between the clamping plates. The insert plate moves to the position where the clamping plate and the swing plate are connected, so that the insert plate is between the front and rear clamping plates. At this time, the insert plate and the clamping plate will form a three-layer plate combination, which can effectively improve the sealing between the blades. At the same time, the connection method of the middle blade and the two side blades through the insertion plate and the clamping plate can greatly improve the stability of the three sets of blades and prevent the blades from shaking when encountering strong airflow, which would cause flue gas leakage.

[0008] Preferably, the pull-back component includes a sliding groove, a sliding column, an elastic element, and a pull rope. The sliding groove is formed inside the push plate, the sliding column is slidably connected to the sliding groove, the elastic element is disposed between the sliding groove and the sliding column, one end of the pull rope passes through the center of the elastic element and is fixedly connected to the sliding column, and the other end is fixedly connected to the edge of the swing plate. When it is necessary to pull the clamping plate back into the two side plates, the side plate rotating rod can be operated to rotate in the opposite direction. At this time, the push plate will move towards the side plate rotating rod under the drive of the side plate rack. The push plate will first leave a distance between itself and the swing plate. When the sliding column overcomes the thrust of the elastic element and abuts against the leftmost side of the sliding groove, the push plate will drive the swing plate to move towards the side plate rotating rod through the pull rope. Finally, the swing plate will drive the clamping plate to move out of the abutment groove and retract into the two side plates. When the push plate pushes the swing plate and the clamping plate to move towards the abutment groove again, the sliding column will first be pushed by the elastic element to retract the pull rope into the sliding groove, and then the push plate will abut against the swing plate and push the swing plate to move.

[0009] Preferably, the clamping plate is further provided with a blocking block and a sealing strip; the blocking block is fastened to the clamping plate and is located inside the shaft connection between the swing plate and the clamping plate; the sealing strip is fastened to the end of the clamping plate that abuts against the abutting groove; the sealing strip at the end of the clamping plate can effectively improve the sealing between the insert plate and the clamping plate, prevent flue gas from leaking between the insert plate and the clamping plate, and the setting of the blocking block can limit the angle of the upper and lower clamping plates, prevent the upper and lower clamping plates from swinging towards each other during the movement, and at the same time will not affect the swinging plate from swinging away from each other.

[0010] Preferably, both the top of the middle plate rotating rod and the side plate rotating rod are provided with a handle, which facilitates the operation of the rotation of the middle plate rotating rod and the side plate rotating rod.

[0011] Preferably, the pushing assembly includes a telescopic groove, a pushing plate, and an elastic element two; the telescopic groove is opened on both sides of the sliding path of the clamping plate and the swing plate, the pushing plate is slidably connected to the telescopic groove, and the elastic element two is disposed between the telescopic groove and the pushing plate; when the overall three-layer plate combination formed by the intersecting insert plate and the clamping plate fails to meet the sealing requirements in a strong airflow environment, the middle plate rotating rod can continue to rotate, so that the insert plate continues to move into the plate blades on both sides, so that the insert plate moves into the rubber pads between the swing plates. When the insert plate enters the rubber pads, the swing plate will be opened and abut against the pushing plate. At this time, the pushing plate and the swing plate, as well as the swing plate and the insert plate, will be sealed by the rubber pads.

[0012] Preferably, the detection assembly includes a rotating rod, blades, a fixed sleeve, and a warning tube. The rotating rod is rotatably connected to a metal frame, and the top of the rotating rod extends beyond the metal frame. The top of the rotating rod is threaded. The blades are fastened to the rotating rod, and multiple sets of blades are arranged in a linear array on the rotating rod. The fixed sleeve is fastened to the top of the metal frame. The warning tube is slidably connected to the fixed sleeve, and the inside of the warning tube is threadedly connected to the rotating rod. When the insert plate and clamp plate are inserted but not into the swing plate, it can meet the sealing requirements under normal conditions. When the flue gas velocity increases, some of the airflow carrying the flue gas leaks from the gap between the plates and blades. The airflow will drive the blades to rotate, and the rotating blades will drive the rotating rod to rotate. The rotation of the rotating rod will drive the warning tube threadedly connected to it to move upward within the fixed sleeve until the warning tube moves out of the fixed sleeve, which can serve as an alarm for people.

[0013] Preferably, the edge of the blade is located on the extension line of the gap where the two sets of blades meet. This arrangement greatly improves the blade's ability to capture airflow, making it easier for the airflow to drive the blade to rotate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention drives the side plate gear to rotate, causing the clamping plate to abut against the groove, thus filling the gap between the clamping plate and the middle and side plate blades. Then, by continuing to rotate the middle plate rotating rod, the middle plate gear drives the two sets of middle plate racks meshing with it to move simultaneously to the left and right. In turn, the middle plate racks push the insert plate to move between the clamping plates. The insert plate moves to the position where the clamping plate connects with the swing plate, so that the insert plate is between the front and rear clamping plates. At this time, the insert plate and the clamping plate will form a three-layer plate combination, which can effectively improve the sealing between the blades. At the same time, the connection method of the middle and side plate blades through the insertion plate and clamping plate can greatly improve the stability of the three sets of blades and prevent the blades from shaking when encountering strong airflow, thus preventing flue gas leakage.

[0015] 2. When the flue gas velocity increases and some of the airflow carrying the flue gas leaks out from the gap between the blades, the airflow will drive the blades to rotate. The rotating blades will drive the rotating rod to rotate, and the rotation of the rotating rod will drive the warning tube threaded to it to move upward within the fixed sleeve until the warning tube moves out of the fixed sleeve, which can serve as an alarm to people and indicate that there is a flue gas leak.

[0016] 3. When the flue gas velocity increases, the rotating rod of the middle plate can continue to rotate, causing the insert plate to continue moving into the blades on both sides. The insert plate moves into the rubber pads between the swing plates. When the insert plate enters the rubber pads, the swing plate will be opened and abut against the push plate. The push plate will overcome the thrust of the elastic element and retract into the telescopic groove. At this time, the push plate and the swing plate, as well as the swing plate and the insert plate, will be sealed by the rubber pads, which can effectively prevent the flue gas from flowing from between the swing plate and the insert plate to the gap between the blades under high flue gas velocity, causing leakage. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the structure of the middle plate rotating rod and the side plate rotating rod of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the plate blade of the present invention; Figure 4 This is a top cross-sectional view of the blade of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 for Figure 6 Enlarged view at point B1; Figure 8 for Figure 4 Enlarged view of point C in the middle; Figure 9 This is a three-dimensional structural diagram of the detection component of the present invention; Figure 10 This is a top view of the blades and plate blades of the present invention.

[0018] In the diagram: 1. Metal frame; 2. Rotating shaft; 3. Plate blade; 4. Connecting plate; 5. Transmission rod; 6. Sealing assembly; 61. Middle plate rotating rod; 62. Middle plate gear; 63. Middle plate rack; 64. Insert plate; 65. Abutment groove; 66. Side plate rotating rod; 67. Side plate gear; 68. Side plate rack; 69. Push plate; 610. Clamping plate; 6101. Blocking block; 6102. Sealing strip; 611. Swing plate; 612. Rubber pad; 613. Pull-back component; 6131. ​​Sliding groove; 6132. Sliding column; 6133. Elastic component one; 6134. Pull rope; 7. Pushing assembly; 71. Telescopic groove; 72. Pushing plate; 73. Elastic component two; 8. Detection assembly; 81. Rotating rod; 82. Paddle blade; 83. Fixing sleeve; 84. Warning tube; 9. Throttle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 9 This invention provides a boiler flue gas isolation device with a sealing detection function, the technical solution of which is as follows: Reference Figures 1 to 4A boiler flue gas isolation device with sealing detection function is disclosed. The isolation device includes a metal frame 1, a rotating shaft 2, blades 3, a connecting plate 4, a transmission rod 5, a sealing assembly 6, a pushing assembly 7, and a detection assembly 8. The metal frame 1 is securely installed on both sides of the flue gas duct. Three sets of rotating shafts 2 are equidistantly distributed between the metal frames 1 and rotatably connected to them. Three sets of blades 3 are also provided, with each set of blades 3 fixedly connected to each set of rotating shafts 2. The connecting plate 4 is securely connected to the end of the rotating shaft 2. The transmission rod 5 is rotatably connected between the connecting plates 4. The sealing assembly 6 is disposed inside the blades 3 and slidably connected to them. The pushing assembly 7 is disposed on both sides of the sealing assembly 6. The detection assembly 8 is rotatably connected to the metal frame 1, and its position is on the extension line of the seam between every two sets of blades 3. During use, boiler flue gas will flow from the left side of the metal frame 1... The flue gas flows from the side flue to the right flue. When maintenance work requires the interception and isolation of flue gas, the motor below the metal frame 1 can be started. The motor will drive the rotating shaft 2 below the middle plate blade 3 to rotate, which in turn drives the three sets of plate blades 3 to rotate simultaneously through the connecting plate 4 and the transmission rod 5, so that the three sets of plate blades 3 are in a straight line, thereby achieving the effect of closing the duct. At the same time, in order to prevent flue gas from leaking from the gaps between the plate blades 3, the gaps can be filled by the interlocking of the sealing components 6. This not only prevents flue gas leakage but also improves the stability of the plate blades 3, preventing the plate blades 3 from shaking due to excessive flue gas flow. Meanwhile, the detection component 8 can also detect the sealing strength between the plate blades 3 in real time. If there is still flue gas leakage, the detection component 8 will issue a warning action. Then, the sealing component 6 can be operated to strengthen its contact strength with the pushing component 7, thereby improving the sealing effect and preventing flue gas leakage under strong airflow, which would pose a safety hazard to maintenance.

[0021] Reference Figures 4 to 8The sealing assembly 6 includes a middle plate rotating rod 61, a middle plate gear 62, a middle plate rack 63, an insert plate 64, an abutment groove 65, a side plate rotating rod 66, a side plate gear 67, a side plate rack 68, a push plate 69, a clamping plate 610, a swing plate 611, a rubber pad 612, and a pull-back component 613. The middle plate rotating rod 61 passes through the rotating shaft 2 of the middle plate blade 3 and extends into the interior of the middle plate blade 3. The middle plate rotating rod 61 is rotatably connected to the middle plate blade 3 and the rotating shaft 2. The middle plate gear 62 is fixedly connected to the middle part of the middle plate rotating rod 61. The middle plate gear 62 is located at the center of the middle plate blade 3. The middle plate rack 63 is located in the middle plate rotating rod 61. On both sides of the plate gear 62, the middle plate rack 63 is slidably connected to the plate blade 3 in the middle position, and the middle plate rack 63 meshes with the middle plate gear 62. The abutment groove 65 is opened at the two edges of the plate blade 3 in the middle position. The side plate rotating rod 66 is rotatably connected to the plate blades 3 on both sides of the middle plate blade 3 and the rotating shaft 2. The side plate gear 67 is fixedly connected to the middle part of the side plate rotating rod 66. The side plate rack 68 is located on one side of the side plate gear 67 and meshes with the side plate gear 67. The push plate 69 is fastened to the side plate rack 68. The clamping plate 610 and the swing plate 611 are both slidably connected to the inside of the plate blades 3 on both sides. The swing plate 611 communicates with the clamping plate 610. The axle rod is rotatably connected, and the rubber pad 612 is attached to the outside of the swing plate 611, with one side of the rubber pad 612 being inclined. The pull-back member 613 is located inside the push plate 69. After the three sets of blades 3 are aligned, rotating the side plate rotating rod 66 above the two side blades 3 drives the side plate gear 67 to rotate. This, in turn, drives the side plate rack 68 and the push plate 69 to move towards the middle blade 3. During the movement, the push plate 69 pushes the clamping plate 610 to abut against the abutment groove 65 through the swing plate 611. At this time, the clamping plate 610 fills the gap between the middle blade 3 and the two side blades 3. Then, the middle plate continues to rotate. Rod 61 and middle plate gear 62 drive the two sets of middle plate racks 63 meshing with it to move simultaneously to the left and right. In turn, the middle plate racks 63 push the insert plate 64 to move between the clamping plates 610. The insert plate 64 moves to the position where the clamping plate 610 and the swing plate 611 are connected, so that the insert plate 64 is between the front and rear clamping plates 610. At this time, the insert plate 64 and the clamping plate 610 will form a three-layer plate combination, which can effectively improve the sealing between the blades 3. At the same time, the connection between the middle blade 3 and the two side blades 3 through the insertion of the insert plate 64 and the clamping plate 610 can greatly improve the stability of the three sets of blades 3 and prevent the blades 3 from shaking when encountering strong airflow, causing flue gas leakage.

[0022] Reference Figure 7The pull-back component 613 includes a sliding groove 6131, a sliding column 6132, an elastic element 6133, and a pull rope 6134. The sliding groove 6131 is formed inside the push plate 69. The sliding column 6132 is slidably connected to the sliding groove 6131. ​​The elastic element 6133 is disposed between the sliding groove 6131 and the sliding column 6132. One end of the pull rope 6134 passes through the center of the elastic element 6133 and is fixedly connected to the sliding column 6132. The other end is fixedly connected to the edge of the swing plate 611. When it is necessary to pull the clamping plate 610 back into the two side plates 3, the side plate rotating rod 66 can be operated to rotate in the opposite direction. At this time, the push plate 69 will move towards the side plate rotating rod 66 under the drive of the side plate rack 68. The push plate 69 will first leave a distance between itself and the swing plate 611. When the sliding column 6132 overcomes the thrust of the elastic element 6133 and comes into contact with the leftmost side of the sliding groove 6131, the push plate 69 will drive the swing plate 611 to move towards the side plate rotating rod 66 via the pull rope 6134. Finally, the swing plate 611 will drive the clamping plate 610 to move out of the contact groove 65 and retract into the two side plate blades 3. When the push plate 69 pushes the swing plate 611 and the clamping plate 610 to move towards the contact groove 65 in the next time, the sliding column 6132 will first be pushed by the elastic element 6133 to retract the pull rope 6134 into the sliding groove 6131. ​​Then the push plate 69 will push the swing plate 611 to move after contacting it.

[0023] Reference Figure 6 and Figure 7 The clamping plate 610 is also provided with a blocking block 6101 and a sealing strip 6102; the blocking block 6101 is fastened to the clamping plate 610, and the blocking block 6101 is located on the inner side of the shaft connection between the swing plate 611 and the clamping plate 610; the sealing strip 6102 is fastened to the end of the clamping plate 610 that abuts against the abutting groove 65; the sealing strip 6102 at the end of the clamping plate 610 can effectively improve the sealing between the insert plate 64 and the clamping plate 610, and prevent the flue gas from leaking between the insert plate 64 and the clamping plate 610. The setting of the blocking block 6101 can limit the angle of the upper and lower clamping plates 610, and prevent the upper and lower clamping plates 610 from swinging towards each other during the movement, while not affecting the swing plate 611 to swing away from each other.

[0024] Reference Figure 2 The top of both the middle plate rotating rod 61 and the side plate rotating rod 66 is provided with a handle 9, which makes it easy for people to operate the rotation of the middle plate rotating rod 61 and the side plate rotating rod 66.

[0025] Reference Figure 7The pushing assembly 7 includes a telescopic groove 71, a pushing plate 72, and an elastic element 73. The telescopic groove 71 is formed on both sides of the sliding path between the clamping plate 610 and the swing plate 611. The pushing plate 72 is slidably connected to the telescopic groove 71. The elastic element 73 is disposed between the telescopic groove 71 and the pushing plate 72. When the overall three-layer plate assembly formed by the intersecting insert plate 64 and clamping plate 610 fails to meet the sealing requirements in a strong airflow environment, the middle plate rotating rod 61 can be rotated to allow the insert plate 64 to continue moving inward toward the plate blades 3 on both sides. When the insert plate 64 moves between the rubber pads 612 between the swing plates 611, the swing plates 611 will be opened and abut against the push plate 72 when the insert plate 64 enters between the rubber pads 612. The push plate 69 will overcome the thrust of the elastic element 73 and retract into the telescopic groove 71. At this time, the push plate 69 and the swing plate 611, as well as the swing plate 611 and the insert plate 64, will be sealed by the rubber pads 612. This can effectively prevent the gas from flowing from between the swing plate 611 and the insert plate 64 to the gap between the blades 3 under high flue gas flow conditions, thus preventing leakage.

[0026] Reference Figure 9 and Figure 10 The detection component 8 includes a rotating rod 81, a blade 82, a fixing sleeve 83, and a warning tube 84. The rotating rod 81 is rotatably connected to the metal frame 1, and the top of the rotating rod 81 extends beyond the metal frame 1. The top of the rotating rod 81 is threaded. The blade 82 is fastened to the rotating rod 81, and multiple sets of blades 82 are arranged in a linear array on the rotating rod 81. The fixing sleeve 83 is fastened to the top of the metal frame 1. The warning tube 84 is slidably connected to the fixing sleeve 83, and the interior of the warning tube 84 is threadedly connected to the rotating rod 81. The insertion of the insert plate 64 and the clamping plate 610 does not result in any swinging motion. When plate 611 is inserted, it can meet the sealing requirements under normal conditions. When the flue gas velocity increases, some of the airflow carrying the flue gas leaks from the gap between the plate blades 3. The airflow will drive the blade 82 to rotate. The rotating blade 82 will drive the rotating rod 81 to rotate. In turn, the rotation of the rotating rod 81 will drive the warning tube 84, which is threaded to it, to move upward within the fixed sleeve 83 until the warning tube 84 moves out of the fixed sleeve 83. This can serve as an alarm to people, indicating that there is a flue gas leak. At this time, in order to improve the sealing effect, the plate rotating rod 61 can be operated to continue to drive the insert plate 64 to move between the swing plates 611 to improve the sealing performance.

[0027] Reference Figure 10 The edge of the blade 82 is located on the extension line of the gap where the two sets of blades 3 meet. This setting greatly improves the blade 82's ability to capture airflow, making it easier for the airflow to drive the blade 82 to rotate.

[0028] Working principle: During operation, the boiler flue gas will flow from the left flue gas duct of the metal frame 1 to the right flue gas duct. When maintenance is required and the flue gas needs to be intercepted and isolated, the motor below the metal frame 1 can be started. The motor will drive the rotating shaft 2 below the plate blade 3 in the middle position to rotate, and then drive the three sets of plate blades 3 to rotate simultaneously through the connecting plate 4 and the transmission rod 5, so that the three sets of plate blades 3 are in a straight line, thereby achieving the effect of closing the air duct. To improve the connection strength between the blades 3, the side plate gear 67 can be driven to rotate, thereby driving the side plate rack 68 and the push plate 69 to move towards the middle blade 3. During the movement, the push plate 69 will push the clamping plate 610 to abut against the abutment groove 65 through the swing plate 611. At this time, the clamping plate 610 fills the gap between the middle blade 3 and the two side blades 3. Then, the middle plate rotating rod 61 continues to rotate, and the middle plate gear 62 will drive the two sets of middle plate racks 63 meshing with it to move to the left and right sides simultaneously. 63 will push the insert plate 64 to move between the clamping plates 610. The insert plate 64 will move to the position where the clamping plate 610 and the swing plate 611 are connected, so that the insert plate 64 is between the clamping plates 610 on the front and rear sides. At this time, the insert plate 64 and the clamping plates 610 will form a three-layer plate combination, which can effectively improve the sealing between the blades 3. At the same time, the connection between the middle blade 3 and the two side blades 3 through the insertion of the insert plate 64 and the clamping plates 610 can greatly improve the stability of the three sets of blades 3 and prevent the blades 3 from shaking when encountering strong airflow, causing flue gas leakage. When the flue gas flow rate is too high, some of the airflow carrying flue gas may leak from the gaps between the blades 3. The airflow will drive the blades 82 to rotate, which in turn will drive the rotating rod 81 to rotate. The rotation of the rotating rod 81 will then drive the warning tube 84, which is threaded to it, to move upward within the fixed sleeve 83 until the warning tube 84 moves out of the fixed sleeve 83. This serves as an alarm to indicate that there is a flue gas leak. At this time, in order to improve the sealing effect, the middle plate rotating rod 61 can be operated to continue rotating, so that the insert plate 64 continues to move into the blades 3 on both sides. The insert plate 64 is moved between the rubber pads 612 between the swing plates 611. When the insert plate 64 enters between the rubber pads 612, the swing plates 611 will be opened and abut against the push plate 72. The push plate 69 will overcome the thrust of the elastic element 73 and retract into the telescopic groove 71. At this time, the push plate 69 and the swing plate 611, as well as the swing plate 611 and the insert plate 64, will be sealed by the rubber pads 612. This can effectively prevent the gas from flowing from between the swing plate 611 and the insert plate 64 to the gap between the blades 3 under high flue gas flow conditions, thus preventing leakage.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A boiler flue gas isolation device with sealing detection function, characterized in that: The partition device includes a metal frame (1), a rotating shaft (2), blades (3), a connecting plate (4), a transmission rod (5), a sealing assembly (6), a pushing assembly (7), and a detection assembly (8). The two sides of the metal frame (1) are fixedly installed with the flue gas duct. There are three sets of rotating shafts (2), which are equidistantly distributed between the metal frames (1) and rotatably connected to the metal frames (1). There are three sets of blades (3), and each set of blades (3) is fixedly connected to each set of rotating shafts (2). The connecting plate (4) is fixedly connected to the end of the rotating shaft (2). The transmission rod (5) is rotatably connected between the connecting plates (4). The sealing assembly (6) is set inside the blades (3) and slidably connected to the blades (3). The pushing assembly (7) is set on both sides of the sealing assembly (6). The detection assembly (8) is rotatably connected to the metal frame (1), and the position of the detection assembly (8) is on the extension line of the seam between every two sets of blades (3).

2. The boiler flue gas isolation device with sealing detection function according to claim 1, characterized in that: The sealing assembly (6) includes a middle plate rotating rod (61), a middle plate gear (62), a middle plate rack (63), an insert plate (64), an abutment groove (65), a side plate rotating rod (66), a side plate gear (67), a side plate rack (68), a push plate (69), a clamping plate (610), a swing plate (611), a rubber pad (612), and a pull-back component (613); the middle plate rotating rod (61) passes through the rotating shaft (2) of the middle position plate blade (3). It extends into the interior of the blade (3) in the middle position. The middle plate rotating rod (61) is rotatably connected to the blade (3) in the middle position and the rotating shaft (2). The middle plate gear (62) is fixedly connected to the middle part of the middle plate rotating rod (61). The middle plate gear (62) is located at the center of the blade (3) in the middle position. The middle plate rack (63) is located on both sides of the middle plate gear (62). The middle plate rack (63) is slidably connected to the blade (3) in the middle position. The middle plate rack (63) meshes with the middle plate gear (62), the abutment groove (65) is opened at the two edges of the middle plate blade (3), the side plate rotating rod (66) is rotatably connected to the plate blades (3) on both sides of the middle plate blade (3) and the rotating shaft (2), the side plate gear (67) is fixedly connected to the middle part of the side plate rotating rod (66), and the side plate rack (68) is located on one side of the side plate gear (67) and is in contact with the side plate gear (67). The push plate (69) is fastened to the side plate rack (68), the clamping plate (610) and the swing plate (611) are both slidably connected to the inside of the two side blades (3), the swing plate (611) and the clamping plate (610) are rotatably connected by a shaft, the rubber pad (612) is attached to the outside of the swing plate (611), and one side of the rubber pad (612) is inclined, and the pull-back piece (613) is set inside the push plate (69).

3. A boiler flue gas isolation device with sealing detection function according to claim 2, characterized in that: The pull-back component (613) includes a sliding groove (6131), a sliding column (6132), an elastic element (6133), and a pull rope (6134). The sliding groove (6131) is opened in the push plate (69). The sliding column (6132) is slidably connected to the sliding groove (6131). The elastic element (6133) is disposed between the sliding groove (6131) and the sliding column (6132). One end of the pull rope (6134) passes through the center of the elastic element (6133) and is fixedly connected to the sliding column (6132). The other end is fixedly connected to the edge of the swing plate (611).

4. A boiler flue gas isolation device with sealing detection function according to claim 3, characterized in that: The clamping plate (610) is also provided with a blocking block (6101) and a sealing strip (6102); the blocking block (6101) is fastened to the clamping plate (610), and the blocking block (6101) is located on the inner side of the shaft connection between the swing plate (611) and the clamping plate (610); the sealing strip (6102) is fastened to the end of the clamping plate (610) that abuts against the abutting groove (65).

5. A boiler flue gas isolation device with sealing detection function according to claim 4, characterized in that: The top of both the middle plate rotating rod (61) and the side plate rotating rod (66) is provided with a throttle (9).

6. A boiler flue gas isolation device with sealing detection function according to claim 5, characterized in that: The pushing component (7) includes a telescopic groove (71), a pushing plate (72), and an elastic element (73); the telescopic groove (71) is opened on both sides of the sliding path of the clamping plate (610) and the swing plate (611), the pushing plate (72) is slidably connected to the telescopic groove (71), and the elastic element (73) is disposed between the telescopic groove (71) and the pushing plate (72).

7. A boiler flue gas isolation device with sealing detection function according to claim 6, characterized in that: The detection component (8) includes a rotating rod (81), a blade (82), a fixed sleeve (83), and a warning tube (84); the rotating rod (81) is rotatably connected to the metal frame (1), and the top of the rotating rod (81) extends out of the metal frame (1). The top of the rotating rod (81) is provided with a thread. The blade (82) is fastened to the rotating rod (81), and multiple sets of blades (82) are arranged in a linear array on the rotating rod (81). The fixed sleeve (83) is fastened to the top of the metal frame (1). The warning tube (84) is slidably connected to the fixed sleeve (83), and the inside of the warning tube (84) is threadedly connected to the rotating rod (81).

8. A boiler flue gas isolation device with sealing detection function according to claim 7, characterized in that: The edge of the blade (82) is located on the extension line of the gap where the two sets of blades (3) meet.

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