Improved high-stability flue gas baffle door

Abstract

The utility model relates to the technical field of flue gas baffle doors, and provides an improved high-stability flue gas baffle door which comprises a main machine shell, a ventilation hole is formed in the main machine shell, a main door plate is arranged in the ventilation hole, two wedge grooves are formed in one side of the main door plate, wedge strips are movably embedded in the wedge grooves, and the wedge strips are arranged in the wedge grooves. A transverse door plate is fixedly connected to the side, away from the main door plate, of the wedge strip, a synchronous rod is rotationally connected to the side, close to the transverse door plate, of the main door plate, connecting rods are rotationally connected to the two ends of the synchronous rod, and shaft blocks are rotationally connected to the ends, away from the synchronous rod, of the connecting rods; the side, away from the connecting rod, of the shaft block is fixedly connected to the outer surface of the transverse door plate, and the side, close to the synchronous rod, of the main door plate is fixedly connected with an air cylinder. The device is provided with an expansion leakage prevention structure, no gap exists between the door plate and the door frame when the device is closed, smoke is prevented from entering from the gap of the door plate, and the safety of maintenance personnel can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke damper doors, in particular to an improved high-stability smoke damper door. Background Art

[0002] Smoke damper doors are commonly used in smoke emission systems of boilers and other industrial equipment. Their function is to regulate and control the flow of smoke. By opening or closing the smoke damper doors, the flow speed and amount of smoke in the emission system can be adjusted to meet production and environmental protection requirements. The opening and closing of the smoke damper doors can affect the pressure distribution in the flue, which is beneficial to regulating the working state of the smoke emission system and improving thermal efficiency. When the smoke system needs to be maintained or repaired, the smoke damper doors can be closed to isolate the smoke system from the boiler or other equipment to ensure the safety of maintenance personnel. In short, the smoke damper doors play an important role in regulating and controlling the flow of smoke in the smoke system.

[0003] However, in the prior art, for example, China Announcement No.: CN210107441U, "An improved high-stability smoke damper door", the utility model belongs to the field of air powder, smoke and other medium flow regulation application technology, and specifically discloses an improved high-stability smoke damper door, which is composed of a frame, a transmission support assembly arranged in the frame, and a damper assembly used in conjunction with the transmission support assembly. The beneficial effect of the improved high-stability smoke damper door of the utility model is that its overall structural design is reasonable, easy to assemble, disassemble and maintain, the damper door is installed in the circulating smoke duct and the smoke flow recirculation duct, and can achieve accurate, stable and efficient opening / closing actions, thereby improving production efficiency and the safety factor of production operations.

[0004] However, this device is not equipped with an extended leakage prevention structure. When the device is closed, there is a gap between the door panel and the door frame, which cannot completely block the entry of smoke, causing smoke to easily enter through the gap in the device, and cannot ensure the safety of maintenance personnel. The device is not equipped with a closed-door self-locking structure, and the door panel cannot be self-locked after the door is closed. When the flowing air velocity is fast, the door panel is easily blown open, making the device unsuitable for use in high-velocity wind areas. Utility Model Content

[0005] The purpose of the utility model is to solve the problems in the prior art that the device is not provided with an extended leakage prevention structure, there is a gap between the door panel and the door frame when the device is closed, and the entry of smoke cannot be completely blocked, resulting in smoke easily entering through the gap of the device, and the safety of maintenance personnel cannot be ensured; the device is not provided with a closed-door self-locking structure, and the door panel cannot be self-locked after the door is closed, and the door panel is easily blown open when the flowing air velocity is fast, resulting in the problem that the device is not suitable for use in high-velocity wind areas.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an improved high-stability smoke damper door, comprising a main casing, a ventilation hole is opened on the main casing, a main door panel is arranged inside the ventilation hole, two wedge grooves are opened on one side of the main door panel, a wedge strip is movably embedded inside the wedge groove, a side of the wedge strip away from the main door panel is fixedly connected with a transverse door panel, a side of the main door panel close to the transverse door panel is rotatably connected with a synchronization rod, both ends of the synchronization rod are rotatably connected with a connecting rod, an end of the connecting rod away from the synchronization rod is rotatably connected with a shaft block, a side of the shaft block away from the connecting rod is fixedly connected to the outer surface of the transverse door panel, a side of the main door panel close to the synchronization rod is fixedly connected with a cylinder, an output end of the cylinder is fixedly connected to the outer surface of the transverse door panel, a bottom of the main door panel is fixedly connected with a first rotating rod, and the bottom of the first rotating rod is rotatably connected to the inner surface of the main casing.

[0007] As a preferred embodiment, a second rotating rod is fixedly connected to the top of the main door panel, and an outer surface of the second rotating rod is rotatably connected to the top of the main housing and extends out at one end.

[0008] As a preferred embodiment, the top of the main housing is fixedly connected to a fixed shell, the top of the fixed shell is rotatably connected to the outer surface of the second rotating rod, and one end extending from the second rotating rod is fixedly connected to a worm gear.

[0009] As a preferred embodiment, two shaft plates are fixedly connected to the top of the main housing, the inner sides of the two shaft plates are rotatably connected with output rods and extend one end, the outer surface of the output rod is fixedly sleeved with a hollow worm, and the outer surface of the hollow worm is meshingly connected to the outer surface of the worm wheel.

[0010] As a preferred embodiment, a first motor is fixedly connected to the top of the main housing, and an output end of the first motor is fixedly connected to an end extending from an output rod.

[0011] As a preferred embodiment, a limiting rod is fixedly connected to the inner surface of the main housing, two limiting sleeves are movably sleeved on the outer surface of the limiting rod, and a longitudinal door panel is fixedly connected to one side of the limiting sleeve.

[0012] As a preferred embodiment, the side of the longitudinal door panel away from the limiting sleeve is fixedly connected to an internal threaded sleeve, the inner surfaces of the two internal threaded sleeves are threadedly connected to threaded rods, the outer surface of the threaded rod is rotatably connected to the interior of the main housing and extends one end, and the threads on both sides of the threaded rod rotate in opposite directions.

[0013] As a preferred embodiment, two L-shaped rods are fixedly connected to the top of the main housing, a second motor is fixedly connected to the inner sides of the two L-shaped rods, and an output end of the second motor is fixedly connected to one end extending from the threaded rod.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. The utility model is provided with an extended leakage prevention structure. When the device is closed, there is no gap between the door panel and the door frame, which prevents smoke from entering through the gap of the door panel and ensures the safety of maintenance personnel.

[0016] 2. The utility model is provided with a closed-door self-locking structure, which can realize self-locking of the door panel after closing the door, so as to prevent the door panel from being blown open when the air velocity is fast, so that the device is suitable for use in high-velocity wind areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an improved high-stability smoke damper door provided by the utility model;

[0018] Figure 2 A schematic diagram of the front cross-sectional structure of an improved high-stability smoke damper door provided by the utility model;

[0019] Figure 3 A schematic diagram of the rear cross-sectional structure of an improved high-stability smoke damper door provided by the utility model;

[0020] Figure 4 An improved high-stability smoke damper door provided by the utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0021] Figure 5 An improved high-stability smoke damper door provided by the utility model Figure 3 Schematic diagram of the enlarged structure of B.

[0022] Legend:

[0023] 1. Main housing; 2. Ventilation hole; 3. Main door panel; 4. Wedge groove; 5. Wedge strip; 6. Horizontal door panel; 7. Synchronous rod; 8. Connecting rod; 9. Shaft block; 10. Cylinder; 11. First rotating rod; 12. Second rotating rod; 13. Fixed housing; 14. Worm gear; 15. Shaft plate; 16. Output rod; 17. Hollow worm; 18. First motor; 19. Limit rod; 20. Limit sleeve; 21. Longitudinal door panel; 22. Internal thread sleeve; 23. Threaded rod; 24. L-shaped rod; 25. Second motor. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-5 The utility model provides a technical solution: an improved high-stability smoke damper door, comprising a main housing 1, a ventilation hole 2 is opened on the main housing 1, a main door panel 3 is arranged inside the ventilation hole 2, two wedging grooves 4 are opened on one side of the main door panel 3, a wedging strip 5 is movably embedded inside the wedging groove 4, a side of the wedging strip 5 away from the main door panel 3 is fixedly connected with a transverse door panel 6, a side of the main door panel 3 close to the transverse door panel 6 is rotatably connected with a synchronization rod 7, both ends of the synchronization rod 7 are rotatably connected with a connecting rod 8, an end of the connecting rod 8 away from the synchronization rod 7 is rotatably connected with a shaft block 9, and the shaft block 9 is away from the connecting rod 8. One side is fixedly connected to the outer surface of the transverse door panel 6, and the side of the main door panel 3 close to the synchronization rod 7 is fixedly connected to the cylinder 10. The output end of the cylinder 10 is fixedly connected to the outer surface of the transverse door panel 6, and the bottom of the main door panel 3 is fixedly connected to the first rotating rod 11. The bottom of the first rotating rod 11 is rotatably connected to the inner surface of the main housing 1. Because the wedge strip 5 connected to the transverse door panel 6 can only move along the groove direction of the wedge groove 4, the cylinder 10 does work and pushes a transverse door panel 6 connected to the cylinder 10 to move along the groove direction of the wedge groove 4 toward the side away from the cylinder 10.

[0026] like Figure 1-5 As shown, the top of the main door panel 3 is fixedly connected with a second rotating rod 12 , the outer surface of the second rotating rod 12 is rotatably connected to the top of the main housing 1 and extends one end, and the main door panel 3 will rotate along with the second rotating rod 12 .

[0027] like Figure 1-5 As shown, the top of the main housing 1 is fixedly connected to a fixed shell 13, the top of the fixed shell 13 is rotatably connected to the outer surface of the second rotating rod 12, one end extending from the second rotating rod 12 is fixedly connected to a worm gear 14, and the second rotating rod 12 will rotate along with the worm gear 14.

[0028] like Figure 1-5 As shown, two shaft plates 15 are fixedly connected to the top of the main casing 1, and the inner sides of the two shaft plates 15 are rotatably connected with an output rod 16 and extend one end, and the outer surface of the output rod 16 is fixedly sleeved with a hollow worm 17, and the outer surface of the hollow worm 17 is meshingly connected to the outer surface of the worm wheel 14. The rotating hollow worm 17 will drive the worm wheel 14 to rotate about the axis of the second rotating rod 12 under the action of meshing, and the worm wheel 14 can only be driven to rotate by the hollow worm 17, and reverse transmission is not possible.

[0029] like Figure 1-5 As shown, a first motor 18 is fixedly connected to the top of the main housing 1, and an output end of the first motor 18 is fixedly connected to an end extending from the output rod 16, and the first motor 18 drives the output rod 16 to rotate.

[0030] like Figure 1-5 As shown, the inner surface of the main housing 1 is fixedly connected to a limit rod 19, and the outer surface of the limit rod 19 is movably sleeved with two limit sleeves 20, one side of the limit sleeve 20 is fixedly connected to a longitudinal door panel 21, and the limit sleeve 20 can only move along the axial direction of the limit rod 19.

[0031] like Figure 1-5 As shown, the side of the longitudinal door panel 21 away from the limiting sleeve 20 is fixedly connected with an internal threaded sleeve 22, and the inner surfaces of the two internal threaded sleeves 22 are threadedly connected with threaded rods 23. The outer surface of the threaded rod 23 is rotatably connected to the inside of the main housing 1 and extends one end. The threads on both sides of the threaded rod 23 rotate in opposite directions. Because the threads on both sides of the threaded rod 23 rotate in opposite directions, the two longitudinal door panels 21 move in opposite directions.

[0032] like Figure 1-5 As shown, two L-shaped rods 24 are fixedly connected to the top of the main housing 1, and a second motor 25 is fixedly connected to the inner side of the two L-shaped rods 24. The output end of the second motor 25 is fixedly connected to one end extending from the threaded rod 23, and the second motor 25 drives the threaded rod 23 to rotate.

[0033] Working principle: When the device needs to be closed, first turn on the external power supply of the first motor 18 above the main housing 1. The external power supply is connected to the first motor 18 through wires. The model of the first motor 18 is DOY106 and the rated power is 750W. After the first motor 18 is powered on, it will drive the output rod 16 to rotate inside the shaft plate 15. The hollow worm 17 that rotates with it will drive the worm wheel 14 to rotate with the axis of the second rotating rod 12 under the meshing action. The worm wheel 14 can only be driven by the hollow worm 17 to rotate, and the reverse transmission is not allowed. The second rotating rod 12, the first rotating rod 11 and the main door panel 3 will rotate with the worm wheel 14 at the same time, and the fixed housing The connection of 13 will make the rotation of the second rotating rod 12 more stable. After the main door panel 3 rotates to be level with the main housing 1, the ventilation hole 2 on the main housing 1 will be initially sealed, and then the cylinder 10 will do work to increase the air pressure through the piston. Then the pneumatic transmission converts the pressure of the compressed air into mechanical energy to push a horizontal door panel 6 connected to the cylinder 10. Because the wedge strip 5 connected to the horizontal door panel 6 can only move along the groove direction of the wedge groove 4, the cylinder 10 does work and pushes the horizontal door panel 6 connected to the cylinder 10 to move along the groove direction of the wedge groove 4 toward the side away from the cylinder 10. When the horizontal door panel 6 moves, it will drive the The connecting rod 8 connected through the shaft block 9, the other end of the connecting rod 8 will drive the synchronous rod 7 to make a circular motion, and the other end of the synchronous rod 7 will also drive one end of the other connecting rod 8 to make a circular motion, so that the other connecting rod 8 will also push the other horizontal door panel 6 through the shaft block 9, and move along the slotting direction of the wedging groove 4 toward the side away from the cylinder 10. When the two horizontal door panels 6 are expanding and moving, the lateral gap of the main door panel 3 will be closed, and then the outer surface power supply of the second motor 25 will be turned on. The second motor 25 is connected to the external power supply through wires. The model of the second motor 25 is: YE3-80M, rated power: 700W; the second motor 25 is connected to the external power supply through an L-shaped The rod 24 is fixed above the main housing 1. When the second motor 25 is energized, it will drive the threaded rod 23 to rotate, and the rotating thread will drive the internal threaded sleeve 22 to move. Because the limit sleeve 20 can only move along the axial direction of the limit rod 19, and the limit sleeve 20 and the internal threaded sleeve 22 are fixed on the longitudinal door panel 21 at the same time, rotating the threaded rod 23 will drive the longitudinal door panel 21 to move along the axial direction of the limit rod 19. Because the threads on both sides of the threaded rod 23 rotate in opposite directions, the two longitudinal door panels 21 move in opposite directions. When the two longitudinal door panels 21 move away from each other at the same time, the longitudinal gap of the main door panel 3 will be closed.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An improved high-stability smoke damper door, characterized in that: The main housing (1) comprises a main housing (1), a ventilation hole (2) is provided on the main housing (1), a main door panel (3) is arranged inside the ventilation hole (2), two wedging grooves (4) are provided on one side of the main door panel (3), a wedging strip (5) is movably embedded inside the wedging groove (4), a side of the wedging strip (5) away from the main door panel (3) is fixedly connected to a transverse door panel (6), a side of the main door panel (3) close to the transverse door panel (6) is rotatably connected to a synchronization rod (7), and both ends of the synchronization rod (7) are rotatably connected to connecting rods (8) The end of the connecting rod (8) away from the synchronization rod (7) is rotatably connected to a shaft block (9), and the side of the shaft block (9) away from the connecting rod (8) is fixedly connected to the outer surface of the transverse door panel (6). The side of the main door panel (3) close to the synchronization rod (7) is fixedly connected to a cylinder (10), and the output end of the cylinder (10) is fixedly connected to the outer surface of the transverse door panel (6). The bottom of the main door panel (3) is fixedly connected to a first rotating rod (11), and the bottom of the first rotating rod (11) is rotatably connected to the inner surface of the main housing (1).

2. The improved high-stability smoke damper door according to claim 1, characterized in that: A second rotating rod (12) is fixedly connected to the top of the main door panel (3); the outer surface of the second rotating rod (12) is rotatably connected to the top of the main housing (1) and extends out at one end.

3. The improved high-stability smoke damper door according to claim 2, characterized in that: The top of the main housing (1) is fixedly connected to a fixed housing (13), the top of the fixed housing (13) is rotatably connected to the outer surface of a second rotating rod (12), and one end extending from the second rotating rod (12) is fixedly connected to a worm gear (14).

4. The improved high-stability smoke damper door according to claim 3 is characterized in that: Two shaft plates (15) are fixedly connected to the top of the main housing (1), and an output rod (16) is rotatably connected to the inner side of the two shaft plates (15) and extends out at one end, and a hollow worm (17) is fixedly sleeved on the outer surface of the output rod (16), and the outer surface of the hollow worm (17) is meshingly connected to the outer surface of the worm wheel (14).

5. The improved high-stability smoke damper door according to claim 4, characterized in that: A first motor (18) is fixedly connected to the top of the main housing (1), and an output end of the first motor (18) is fixedly connected to an end extending from an output rod (16).

6. The improved high-stability smoke damper door according to claim 5, characterized in that: The inner surface of the main housing (1) is fixedly connected to a limit rod (19), the outer surface of the limit rod (19) is movably sleeved with two limit sleeves (20), and one side of the limit sleeve (20) is fixedly connected to a longitudinal door panel (21).

7. The improved high-stability smoke damper door according to claim 6, characterized in that: An inner thread sleeve (22) is fixedly connected to the side of the longitudinal door panel (21) away from the limiting sleeve (20), and the inner surfaces of the two inner thread sleeves (22) are threadedly connected to threaded rods (23), and the outer surfaces of the threaded rods (23) are rotatably connected to the inside of the main housing (1) and extend out at one end, and the threads on both sides of the threaded rods (23) rotate in opposite directions.

8. The improved high-stability smoke damper door according to claim 3 is characterized in that: Two L-shaped rods (24) are fixedly connected to the top of the main housing (1), a second motor (25) is fixedly connected to the inner sides of the two L-shaped rods (24), and an output end of the second motor (25) is fixedly connected to an end extending from the threaded rod (23).

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